US20020044515A1 - Electronic apparatus and apparatus for recording and/or playback on recording medium - Google Patents
Electronic apparatus and apparatus for recording and/or playback on recording medium Download PDFInfo
- Publication number
- US20020044515A1 US20020044515A1 US10/023,848 US2384801A US2002044515A1 US 20020044515 A1 US20020044515 A1 US 20020044515A1 US 2384801 A US2384801 A US 2384801A US 2002044515 A1 US2002044515 A1 US 2002044515A1
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- US
- United States
- Prior art keywords
- framework
- recording medium
- record
- playback
- cover body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/12—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules
- G11B33/121—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules the apparatus comprising a single recording/reproducing device
- G11B33/122—Arrangements for providing electrical connections, e.g. connectors, cables, switches
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/02—Details
- G11B17/04—Feeding or guiding single record carrier to or from transducer unit
- G11B17/041—Feeding or guiding single record carrier to or from transducer unit specially adapted for discs contained within cartridges
- G11B17/044—Indirect insertion, i.e. with external loading means
- G11B17/046—Indirect insertion, i.e. with external loading means with pivoting loading means
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/02—Details
- G11B17/04—Feeding or guiding single record carrier to or from transducer unit
- G11B17/041—Feeding or guiding single record carrier to or from transducer unit specially adapted for discs contained within cartridges
- G11B17/044—Indirect insertion, i.e. with external loading means
- G11B17/046—Indirect insertion, i.e. with external loading means with pivoting loading means
- G11B17/0466—Indirect insertion, i.e. with external loading means with pivoting loading means with opening mechanism of the cartridge shutter
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
- G11B25/04—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card
- G11B25/043—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card using rotating discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
- G11B33/022—Cases
- G11B33/025—Portable cases
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/12—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules
- G11B33/121—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules the apparatus comprising a single recording/reproducing device
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/12—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules
- G11B33/121—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules the apparatus comprising a single recording/reproducing device
- G11B33/123—Mounting arrangements of constructional parts onto a chassis
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
- G11B33/1493—Electro-Magnetic Interference [EMI] or Radio Frequency Interference [RFI] shielding; grounding of static charges
Definitions
- the electronic apparatus such as a disk record and/or playback apparatus has been minimized in the overall size for ease of mobility or portability and is still underway for miniaturization, it is however difficult to maintain the mechanical strength of particular components of which dimensions are decreased to a minimum. Thus, the electronic apparatus composed of such components is hardly ensured in the mechanical strength. Accordingly, it may easily be injured when accidentally dropped down.
- the cover body has a window and at least one operating buttonswitch mounted thereon, and the second circuit board has at least one switch actuated by the action of the operating buttonswitch and a display element provided opposite to the window.
- FIG. 13 is a plan view of a framework as a member of the apparatus.
- FIG. 19 is a plan view of a shield sheet supporting an LCD panel
- a plurality of disk identification apertures 213 are provided for detecting a type of the optical disk loaded.
- the disk cartridge 202 of playback type and the disk cartridge 222 of record/playback type described above are used as the recording mediums in a disk player of the present invention.
- the disk player of the present invention has a housing 151 composed of a lower half 62 serving as a main body and an upper half 44 serving as a cover for closing the opening of the lower half 62 .
- the housing 151 accommodates a framework 22 of a four-sided shape as shown in FIG. 7.
- the cartridge loading detection switch mounted on the base plate 1 is pressed and turned on by the cartridge body 205 thus detecting and indicating that the disk cartridge 202 or 222 has been loaded into the cartridge loading section 1 a.
- the identification aperture 224 of the cartridge 202 or 222 is examined by the identification switch mounted on the base plate 1 to identify the type of the disk cartridge 202 or 222 .
- the cartridge loading detection switch and the identification switch both are connected to the control circuit provided on the first circuit board 38 .
Abstract
An apparatus is provided comprising: a record and/or playback units having a first circuit board provided with a grounding potential unit; a cover body pivotably mounted to the record and/or playback unit and including a shield member connected to the grounding potential unit and a second circuit board connected to the first circuit board; a holder made of a metallic material and arranged to travel between the location for loading a recording medium into the record and/or playback unit and the location spaced away from the record and/or playback unit as the cover body is pivotably moved, and a grounding member made of a metallic material, provided with an engaging portion for engagement with the shield member and a contact for coming into direct contact with the holder, and connected to the shield member to urge the cover body in a direction of the holder pivotably turning. Since the shield member is connected to the grounding member, the circuit board remains connected to the ground thus preventing the apparatus from being statically charged.
Description
- The present invention relates to an electronic apparatus such as a disk player, a tape recorder, or a video camera and more particularly, to an apparatus for recording and/or playback, such as a disk player equipped with a recording medium such as an optical disk on which data signals are recorded.
- Electronic apparatuses including a disk player, a tape recorder, and a video camera have been decreased to as a small size as portable.
- Such portable electronic apparatuses are minimized in the overall dimensions by reducing the size of its components and electronic device as well as the space where the components are installed. It is further tailored for decreasing the size of an electronic apparatus that an electronic circuit board on which the electronic components are mounted in circuitry arrangements is divided into smaller segments and the space available in the apparatus is filled with the smaller segments.
- For example, a disk record and playback apparatus is proposed employing as a recording medium a disk cartridge which has a disk installed therein for recording data signals. In particular, the apparatus comprises a housing which is substantially identical in the size of a plan view to the disk cartridge and a disk record and/or playback assembly accommodated in the housing for recording and/or playing back a data signal on the disk of the disk cartridge.
- Although the electronic apparatus such as a disk record and/or playback apparatus has been minimized in the overall size for ease of mobility or portability and is still underway for miniaturization, it is however difficult to maintain the mechanical strength of particular components of which dimensions are decreased to a minimum. Thus, the electronic apparatus composed of such components is hardly ensured in the mechanical strength. Accordingly, it may easily be injured when accidentally dropped down.
- It is thus designed for protection of a mechanism where the mechanical strength is insufficient to have a housing in which the mechanism and electronic circuit boards are installed made of a material having a proper degree of mechanical strength so that the mechanical strength of the overail construction can be maintained to a level of insurance. The housing made of a material having a higher mechanical strength however results in the increase of the overall weight of the apparatus. The mechanism developed for increasing the mechanical strength will be adverse to decreasing the overall size of the apparatus.
- In case that the electronic apparatus includes a set of small sized electronic circuit boards, each composed of a plurality of electronic circuits, for effective use of a limited space in the apparatus, electrical insulation and connection to the ground of its electronic circuits will extremely be troublesome.
- If the electrical insulation and connection to the ground of the electronic circuits in the electronic apparatus fail to provide a level of liability, its housing made of e.g. a synthetic resin material may be assaulted by static electricity thus producing a fault and impairing the electronic circuits.
- It is possible for protection of the electronic circuits on the circuit boards to have the circuit boards integrated to a single unit. Although such an integrated form of the circuit boards ensures ease of the electrical insulation and connection to the ground of the electronic circuits its increased size will prevent the apparatus from being minimized in the dimensions.
- It is an object of the present invention to provide an electronic apparatus and a recording medium record and/or playback apparatus which are minimized in the overall size and the overall weight but still have an optimum degree of mechanical strength.
- It is another object of the present invention to provide an electronic apparatus and a recording medium record and/or playback apparatus which is capable of, when used as a portable or mobile type, having an optimum degree of mechanical strength regardless of being stressed by external impact due to drop-down.
- It is a further object of the present invention to provide an electronic apparatus and a recording medium record and/or playback apparatus in which electronic circuits are securely protected.
- It is a further object of the present invention to provide an electronic apparatus and a recording medium record and/or playback apparatus in which static charge is prevented from.
- For achievement of the objects of the present invention, an electronic apparatus comprises: an upper half and a lower half; a framework; and a circuit board which is substantially equal in the size to the framework and has a degree of rigidity enough to be mounted to one side of the framework, wherein the upper half and the lower half are arranged so as to sandwich and enclose the framework therebetween. As the circuit board is mounted to the framework with a degree of rigidity, the rigidity and mechanical strength of the framework will be increased.
- The electronic apparatus may further comprise a strip member mounted to an outer side of the framework. The strip member is located between the upper half and the lower half. The framework is formed of a four-sided shape and arranged movable relative to the strip member.
- The electronic apparatus of the present invention may further comprise a base mounted to an inner side of the framework. The framework has at least one pivotal arm pivotably mounted thereto and joined to the upper half so that the upper half can pivotably be turned relative to the lower half.
- The framework has a lock member for locking the upper half at its closed position over the framework.
- A recording medium record and/or playback apparatus according to the present invention comprises: a record and/or playback units having a first circuit board provided with a grounding potential unit; a cover body pivotably mounted to the record and/or playback unit and including a shield member connected to the grounding potential unit and a second circuit board connected to the first circuit board; a holder made of a metallic material and arranged to travel between the location for loading a recording medium into the record and/or playback unit and the location spaced away from the record and/or playback unit as the cover body is pivotably moved; and a grounding member made of a metallic material, provided with an engaging portion for engagement with the shield member and a contact for coming into direct contact with the holder, and connected to the shield member to urge the cover body in a direction of the holder pivotably turning.
- The first circuit board and the second circuit board connected to the first circuit board are electrically shielded by the cover body including the shield member connected to the grounding potential unit. Since the shield member is connected to the grounding member, the apparatus remains connected to the ground thus being prevented from static charging.
- The grounding member has a pressing portion thereof for pressing the recording medium against the record and/or playback unit, which prevents from static charging.
- In the recording medium record and/or playback apparatus of the present invention, the cover body has a window and at least one operating buttonswitch mounted thereon, and the second circuit board has at least one switch actuated by the action of the operating buttonswitch and a display element provided opposite to the window.
- The recording medium record and/or playback apparatus may further comprise a base, a framework on which the base and the first circuit board are mounted, a strip member mounted to an outer side of the framework, and a half accommodating the framework, wherein the strip member is located between the cover body and the half when the cover body is closed over the half.
- The framework has at least one pivotal arm pivotably mounted thereto and joined to the cover body and a lock member for locking the cover body at its closed position over the half.
- A recording medium record and/or playback apparatus according to the present invention is provided comprising: a main body including a recording medium record and/or playback units; and a cover body pivotably mounted to the main body and having at least one operating buttonswitch mounted on an upper side thereof, wherein the main body includes an opening for loading of a battery, a storage for storing the battery loaded through the opening, and a battery cover for opening and closing the opening, wherein the storage is formed by the main body bulged downwardly at its lower side. The storage is bulged downwardly from the lower side of the main body. This allows the apparatus to be tilted when placed with its storage at bottom thus contributing to the improvement of the operability of an operating section of the cover body.
- The opening for loading a battery is provided in a side of the main body. Also, the battery cover for opening and closing the opening is pivotably mounted on the main body with one end of the opening designated as the pivotal base.
- The recording medium record and/or playback apparatus of the present invention may further comprise a holder arranged to travel between the location for recording medium record and/or playback and the location spaced away from the location for recording medium record and/or playback as the cover body is pivotably moved.
- A recording medium record and/or playback apparatus according to the present invention is provided comprising: a main body including an upper half, a lower half, and a recording medium record and/or playback unit which are arranged to substantially a rectangular parallelopiped shape, the lower half having an opening provided in a side thereof at a corner for loading a battery and the opening being opened and closed by the action of a battery cover pivotably mounted to the side of the lower half; and a holder mounted to the main body for traveling between the location of loading a recording medium onto the record and/or playback unit and the location spaced away from the record and/or playback unit. The main body includes a base on which the record and/or playback unit is mounted, a framework joined to the base and accommodated in the lower half, and a strip member mounted to an outer side of the framework. The main body also includes a circuit board mounted to a lower side of the framework.
- The apparatus may further comprise a cover body arranged for movement relative to the main body as the holder is pivotably moved, and provided with at least one operating buttonswitch on the upper side thereof. The cover body has a display mounted on the upper side thereof.
- Other objects and practical advantages of the present invention will be apparent from the following description of preferred embodiments.
- FIG. 1 is a perspective view, from above, of a disk cartridge of playback type used in a disk player according to the present invention;
- FIG. 2 is a perspective view, from below, of the disk cartridge;
- FIG. 3 is a perspective view, from above, of a disk cartridge of record and playback type used in a disk player according to the present invention;
- FIG. 4 is a perspective view, from below, of the disk cartridge;
- FIG. 5 is a perspective view showing a disk player as an electronic apparatus of the present invention;
- FIG. 6 is a perspective view of the disk player where a disk cartridge and a secondary cell are to be loaded;
- FIG. 7 is an exploded perspective view of the disk player of the present invention;
- FIG. 8 is a back view of a lower half as a member of the apparatus;
- FIG. 9 is a plan view of the lower half showing its inside;
- FIG. 10 is a front view of the lower half;
- FIG. 11 is a plan view of a strip as a member of the apparatus;
- FIG. 12 is a front view f the strip;
- FIG. 13 is a plan view of a framework as a member of the apparatus;
- FIG. 14 is a right side view of the framework with an pivotal arm mounted thereon;
- FIG. 15 is a left side view of the framework with an pivotal arm mounted thereon;
- FIG. 16 is a front view of the framework;
- FIG. 17 is a cross sectional view of a housing composed of the lower half, the strip, and an upper half joined to each other;
- FIG. 18 is a plan view of a primary part showing the relation between the framework and a pivotal lever;
- FIG. 19 is a plan view of a shield sheet supporting an LCD panel;
- FIG. 20 is a plan view of the upper half;
- FIG. 21 is a bottom view of the upper half showing its inside;
- FIG. 22 is a longitudinal cross sectional view of the shield sheet, a grounding strip, and the disk cartridge connected in a combination to the ground;
- FIG. 23 is a plan view of a conductive strip mounted to the shield sheet;
- FIG. 24 is a block diagram showing a grounding connection in the disk player; and
- FIG. 25 is a perspective view of the disk player of the present invention placed at a given location.
- An electronic apparatus according to the present invention will be described referring to the drawings.
- This embodiment explained below is particularly applied to a disk player employing an optical disk as the recording medium on which data signals are recorded and arranged for playback of a data signal such as an audio signal from the optical disk.
- Prior to the description of the disk player of the embodiment, the disk cartridge used as the recording medium in the disk player is explained.
- The disk cartridge used in the disk player of the embodiment may be classified into two types; one with an optical disk carrying data signals such as audio signals and used for playback only and the other with an optomagnetic disk used for both record and playback of data signals such as audio signals.
- The
disk cartridge 202 including an optical disk of aplayback type 201 has acartridge body 205 thereof composed of a pair of upper andlower halves cartridge body 205 is formed of a square shape having a circle of the outer edge of theoptical disk 201 inscribed therein so that theoptical disk 201 is rotatably accommodated in a disk storage of thecartridge body 205. - The
lower half 204 of thecartridge body 205 has acenter aperture 206 provided in the center thereof for accepting a disk table which is mounted in the disk player for rotating theoptical disk 201 accommodated in thecartridge 205. Also, ahub 207 provided in the center of theoptical disk 201 is lodged in thecenter aperture 206 for clamping theoptical disk 201 to the disk table. - As best shown in FIG. 2, the
lower half 204 has aplayback opening 208 provided therein for exposing a portion of theoptical disk 201 radially and outwardly. Theopening 208 extends from near thecenter aperture 206 to one side of thecartridge body 205. Theopening 208 allows a portion of theoptical disk 201 to be exposed and accessed by an optical pickup mounted on the disk player when thedisk cartridge 202 is loaded to the disk player. - The
cartridge body 205 has ashutter 209 mounted for opening and closing theplayback opening 208. Theshutter 209 has aslide guide 209 a formed at the proximal end thereof for engagement with aslide guide groove 210 provided in the side of thecartridge body 205 so that it can move in both directions denoted by the arrows A and B in FIG. 2 to open and close theopening 208. When theshutter 209 is in its close location to close theopening 208, it is locked to a shutter lock member of thecartridge body 205 for not departing from the close location. As thedisk cartridge 202 has been loaded into the disk player, theshutter 209 at its close location to close theopening 208 is unlocked by a shutter release member mounted adjacent to theslide guide groove 210 in the disk player. More specifically, theshutter 209 is urged by the shutter release member and moved in the direction denoted by the arrow A in FIG. 2 thus exposing theopening 208. - For the purpose, the
disk cartridge 202 is loaded and unloaded on the disk player with the side of itscartridge body 205, along which theshutter 209 is slid, held at a right angle to the loading side of the disk player. - Moreover, the
lower half 204 has a pair ofpositioning slots disk cartridge 202 is loaded into the disk player. The pairedpositioning slots playback opening 209 respectively. With the pairedpositioning slots disk cartridge 202 is horizontally aligned and placed in a cartridge loading section of the disk player. - In the other end of the side of the
lower half 204 opposite to theshutter 209 end, a plurality ofdisk identification apertures 213 are provided for detecting a type of the optical disk loaded. - Also engaging
recesses cartridge body 205 perpendicular to the front or loading side. The loading side of thecartridge body 205 has a recessedcartridge identification 216 thereof which can be detected by an identifying mechanism mounted in the disk player for identifying a type of thedisk cartridge 202. - As apparent from in FIG. 1, the
upper half 203 of thedisk cartridge 202 containing theoptical disk 201 of the playback type is sealed in. This is done because a magnetic head for recording data signals in cooperation with the optical pickup is not applicable. - It is true that a
disk cartridge 222 containing aoptomagnetic disk 221 of a record/playback type for record and playback of data signals such as audio signals is substantially similar in the fundamental arrangement of common components to thedisk cartridge 202 containing theoptical playback disk 201, as shown in FIGS. 3 and 4. Thedisk cartridge 222 is now explained referring to FIGS. 3 and 4. Like components are denoted by like numerals as those of thedisk cartridge 202 containing theoptical playback disk 201 and their explanation will be omitted. - The
disk cartridge 222 carrying theoptomagnetic disk 221 of the record and playback type has aplayback opening 228 provided in alower half 204 thereof and a recording opening 229 provided in anupper half 203 thereof for allowing the access of a magnetic head to record data signals in cooperation with an optical pickup. Thedisk cartridge 222 includes ashutter 230 which has a C shape in cross section for opening and closing the twoopenings 228 and 229 at a time at both surfaces of acartridge body 205. More particularly, theshutter 230 has aslide guide tab 230 a mounted to the proximal end thereof so that theshutter 230 can slide in both directions denoted by the arrows A and B in FIGS. 3 and 4 to open and close the twoopenings 228 and 229 with its slide guide tab 230 b engaging with aslide guide recess 210. - The
disk cartridge 202 of playback type and thedisk cartridge 222 of record/playback type described above are used as the recording mediums in a disk player of the present invention. As shown in FIGS. 5 and 6, the disk player of the present invention has ahousing 151 composed of alower half 62 serving as a main body and anupper half 44 serving as a cover for closing the opening of thelower half 62. Thehousing 151 accommodates aframework 22 of a four-sided shape as shown in FIG. 7. - The
lower half 62 is formed of a four-sided housing shape with its lower surface opened up as shown in FIGS. 7, 8, 9, and 10. The open upper surface of thelower half 62 is tailored for loading and unloading of thedisk cartridge lower half 62. A C shapednarrow strip 32 is mounted from the open upper surface in thelower half 62 so that it extends from the front side to two opposite sides at a right angle to the front side in thelower half 62, as shown in FIG. 7. - The
strip 32 may be fabricated by mold forming of a synthetic resin material and comprises afront wall 32 a and a pair ofside walls front side 32 a, thus forming substantially a C shape, as shown in FIGS. 11 and 12. The C shapedstrip 32 has no rear wall arranged opposite to thefront wall 32 a and will thus be deflected easily. In particular, the twoopposite side walls strip 32 of the synthetic resin material is stressed, it can readily be restored to its original shape without difficulty. Thestrip 32 is seated on thelower half 62 with its engagingstep 32 d provided along the lower edge of thestrip 32 and coupled to the upper edge of thelower half 62, as shown in FIG. 12. - The
framework 22 mounted in thelower half 62 of thehousing 151 is fastened to thelower half 62 by screws, not shown, threaded through screw holes 133, shown in FIG. 10, provided in both ends of thefront wall 62 a of thelower half 62 intoscrew holes 133 a, shown in FIG. 16, provided in both ends of afront wall 22 a of theframework 22. Theframework 22 may be fabricated by folding a metal strip of e.g. stainless steel into a four-sided shape, as shown in FIGS. 7 and 13. Theframework 22 is joined to the inner side of the C shapedstrip 32 so that itsfront wall 22 a and twoopposite side walls front wall 22 a extend along the inner side of thestrip 32. - The two
opposite side walls strip 32 haveprojections front wall 32 a, as shown in FIG. 11. As best shown in FIG. 7, a couple of engagingholes projections protrusions rear wall 22 d of theframework 22. Thestrip 32 is joined to the outer side of thefront wall 22 a and theside walls framework 22 with its engagingholes protrusions rear wall 22 d of theframework 22 and also, with engagingholes front wall 32 a accepting protrusions 113 b provided adjacent to the screw holes 133 a on both ends of thefront wall 22 a of theframework 22. - In case that the
strip 32 joined to theframework 22 with its engagingholes protrusions framework 22 respectively as substantially fitted into thelower half 62 is stressed by an external impact, it will be deformed itself with its engagingholes protrusions framework 22. More specifically, when thestrip 32 is deformed by any stress, it may dislocate relative to theframework 22 and prevent theframework 22 and thelower half 62 supporting theframework 22 from being stressed directly, hence avoiding any unwanted load over e.g. abase plate 1 mounted to theframework 22. - A pair of left and right
pivotal arms side walls framework 22 respectively supported by thestrip 32, as shown in FIGS. 7, 14, and 15. Thepivotal arms framework 22 bypivots rear side 22 d of theside walls framework 22 across pivot holes 23 a and 25 a provided in the proximal ends of their respectivepivotal arms pivots pivotal arms slits pivots arcuate slits pivotal motion limiters side walls framework 22 respectively. While thepivotal arms framework 22 in the direction denoted by the arrow C in FIGS. 14 and 15, their pivotal movements are restricted by thepivotal motion limiters - The
pivotal arms spring portions projections spring portions pivotal arms framework 22, theirprojections holes side walls framework 22 respectively thus to limit the pivotal movements of thepivotal arms pivotal arms framework 22 in the direction denoted by the arrow C in FIGS. 14 and 15, theirspring portions framework 22 due to their elastic deformation and release theprojections holes - The
upper half 44 of the housing is fixedly joined at lower ends by screws, not shown, to the twopivotal arms framework 22. This allows theupper half 44 secured to the twopivotal arms framework 22 installed in thelower half 62 to be turned together with the twopivotal arms pivots lower half 62. - When the
upper half 44 has been turned to thelower half 62 for closing, it comes in direct contact with thelower half 62 forming thehousing 151 as shown in FIG. 5 and covering theframework 22 from upper and lower. Theupper half 44 and thelower half 62 may be made of a conductive, light weighted metal material such as aluminum. - When the
upper half 44 and thelower half 62 are joined to each other, thestrip 32 extending along the outer walls of theframework 22 in thelower half 62 is sandwiched between theupper half 44 and thelower half 62 as shown in FIG. 17. Thestrip 32 sandwiched between theupper half 44 and thelower half 62 can absorb by deformation any impact applied to thehousing 151 thus preventing physical injury. - As the
upper half 44 has been joined to thelower half 62 for closing thehousing 151, it is locked to theframework 22 by a lock mechanism. Alock lever 130 is slidably mounted to thefront wall 22 a of theframework 22 as shown in FIG. 16. Thelock lever 130 has alock flap 29 thereof extending upwardly of theframework 22. An engagingmember 140 for engagement with thelock flap 29 is mounted to substantially the center of the front side of theupper half 44 as best shown in FIG. 6. When thelock lever 130 engages at itslock flap 29 with the engagingmember 140, it causes theupper half 44 to be joined directly to thelower half 62 and maintains thelower half 62 at its closing state of the upper surface shown in FIG. 5. Thelock lever 130 also has at one end aknob mounting tab 129. Aslider knob 33 for sliding movement along thefront wall 32 a of thestrip 32 is mounted to theknob mounting tab 129 as shown in FIG. 12. Thelock lever 130 remains urged in the direction denoted by the arrow D in FIG. 16 for driving thelock flap 29 to engage with the engagingmember 140 by means of atension coil spring 131 mounted between thelock lever 130 and thefront wall 22 a of theframework 22. - The
knob mounting tab 129 of thelock lever 130 is arranged to extend across a throughhole 30 provided as a notched shape in thefront wall 22 a of theframework 22 to afront surface 32 a of thestrip 32 joined directly to thefront wall 22 a. - When the
slider knob 33 is slid in the direction denoted by the arrow D in FIG. 16 as resisting against the urging force of thetension coil spring 131, thelock lever 130 disengages itslock flap 29 from the engagingmember 140 and permits theupper half 44 to turn upward and depart from thelower half 62. - A
first circuit board 3 8 having a size and a shape substantially equal to the plan view of theframework 22 and acting as a main circuit board with a degree of rigidity is mounted to the lower surface of theframework 22 installed in thelower half 62, as shown in FIG. 7. Thefirst circuit board 38 for use as power and control circuits of the disk player may be fabricated by providing a pattern of wiring on an insulating substrate with a degree of rigidity and mountingelectronic components 40 to corresponding locations of the pattern. The pattern of wiring includes grounding ports which are connected at one end to grounding potential sections of the electronic circuit and at the other end to the ground. - The
first circuit board 38 of a four-sided shape is anchored by screws to circuitboard mounting tabs front wall 22 a, theside walls rear wall 22 d of theframework 22, as shown in FIG. 13, thus closing theframework 22 from lower. The screws for anchoring thefirst circuit board 38 to theframework 22 are extended through screw holes provided in thefirst circuit board 38 and threaded into the thread holes of their respective circuitboard mounting tabs - The
first circuit board 38 mounted to the lower side of theframework 22 is thus installed in thelower half 62 together with theframework 22. - Since the
framework 22 made of a resilient metal strip folded into a four-sided shape is joined at the lower side with thefirst circuit board 38 having a degree of rigidity, it will be prevented from deflection and its mechanical strength will be increased. - Referring to FIG. 7, a
battery holder frame 41 serving as a battery holder for storage of asecondary battery 68 which is a source of electric power for driving the disk player is mounted to the bottom of thefirst circuit board 38 in theframework 22. Thebattery holder frame 41 may be fabricated by folding a metal sheet to a C shape as shown in FIG. 7 and has a mountingarm 42 extending from one end thereof. Afastening tab 43 having a screw hole 43 a therein is provided at the distal end of the mountingarm 42. Thebattery holder frame 41 is fixedly joined by a fastening screw screwed through the screw hole 43 a of thefastening tab 43 to thefirst circuit board 38 with its one open end aligned to one end of thefirst circuit board 38 and its top abutting thefirst circuit board 48. - A guide member67 b which has a
battery inlet 67 a thereof provided for guiding the loading of thesecondary battery 68 into thebattery holder frame 41 is mounted to the open end of thebattery holder frame 41. The guide member 67 b may be made of a synthetic resin material and is fixedly mounted by fastening screws to the bottom of thefirst circuit board 38. - Though not illustrated, the
first circuit board 38 includes terminal plates arranged opposite to thebattery holder frame 41 joined to thefirst circuit board 38 for providing electrical contacts with the electrodes of thesecondary battery 68 loaded in thebattery holder frame 41. The terminal plates are electrically connected to the power circuit of thefirst circuit board 38. - As the
first circuit board 38 has been mounted to theframework 22 and installed together with theframework 22 in thelower half 62, thebattery holder frame 41 and guide member 67 b mounted to the bottom of thefirst circuit board 38 are positioned in abattery storage 66 provided at the bottom of thelower half 62 extending downwardly, as shown in FIGS. 5, 6, and 7. The guide member 67 b is closely fitted into a battery loading opening 66 a provided in one side of thelower half 62. - A
battery cover 67 is pivotably mounted at its proximal end to one side at thebattery inlet 67 a of the guide member 67 b for opening and closing the battery loading opening 66 a. When thesecondary battery 68 has been loaded from thebattery inlet 67 a into thebattery holder frame 41, it is securely held in thelower half 62 and prevented from being dropped off from thebattery storage 66 by thebattery cover 67 closing thebattery inlet 67 a. - The
secondary battery 68 may be a rechargeable Ni-Cd cell or a lithium ion cell having a flat parallelopiped shape shown in FIG. 6. - The
battery storage 66 bulged downwardly at the bottom of thelower half 62 may be so designed with its back raised and acting as a support so that when the disk player is placed on a flat level such as the top of a desk, itsupper half 44 is tilted . - The
framework 22 joined at the lower side with thefirst circuit board 38 is also coupled at the upper side to thebase plate 1 on which the disk playback unit is mounted above thefirst circuit board 38. The shape of thebase plate 1 is flat and four sided and substantially equal to that of thedisk cartridge 202 of playback type shown in FIGS. 1 and 2 or thedisk cartridge 222 of record and playback type shown in FIGS. 3 and 4. Thebase plate 1 may be made of a magnesium diecast alloy which is light in weight but has a proper degree of mechanical strength. - The
base plate 1 is supported by support pins, not shown, mounted upright on twosupport flaps side wall 22 c and theback wall 22 d of theframework 22, and seated at the lower side on fourdampers support flap 102 and threeprojection tabs side walls back wall 22 d of theframework 22, as shown in FIG. 13. This allows thebase plate 1 to be displaced axially of the support pins within a range where thedampers - A
holder 16 for holding thedisk cartridge base plate 1 supported by theframework 22. More particularly, theholder 16 is pivoted by a couple ofpivots holder 16 and are joined to the opposite sides supportflaps base plate 1, as shown in FIG. 7, so that theholder 16 can turn about thepivots base plate 1. Since theholder 16 is associated with theupper half 44, its pivotal movement about thepivots upper half 44. - As shown in FIGS. 14 and 15, engaging
tabs holder 16 are provided on the distal ends of thepivotal arms upper half 44. When theupper half 44 is turned with thepivotal arms pivots lower half 62 in the direction denoted by the arrow C in FIG. 6, theholder 16 moves upward with its unshown engaging tabs engaging with the corresponding engagingtabs holder 16 is lifted through an angle of 18° to 22° from thebase plate 1 supported by theframework 22 in thelower half 62 in the direction denote by the arrow C in FIG. 6. - When the
upper half 44 is turned down in the direction denoted by the arrow E in FIG. 6 to approach the upper surface of thelower half 62, the unshown engaging tabs disengage from their respectiveengaging tabs upper half 44 has been turned and closes the upper surface of thelower half 62, theholder 16 is located directly on thebase plate 1. - Referring to FIG. 14, an operating
lever 112 for actuating a closing detection switch mounted on thefirst circuit board 38 for detection of the closing of theupper half 44 is mounted to substantially a center region of theside wall 22 c of theframework 22. The operatinglever 112 is pivotably joined to apivot 118 mounted upright on theside wall 22 c and remains urged in the direction denoted by the arrow F in FIG. 14 by atwisted coil spring 113 mounted to the side wall 22C. The pivotal movement of the operatinglever 112 is limited by a pivotalmotion limiting pin 112 a. When theupper half 44 is turned down to close the upper surface of thelower half 62, thepivotal arm 24 joined to theupper half 44 presses down against a pressedportion 115 of the operatinglever 112 which is then turned in an opposite direction to the direction denoted by the arrow F in FIG. 14 as resisting against the urging force of thecoil spring 113. This causes a switching portion of the operatinglever 112 to depress and turn on the closing detection switch on thefirst circuit board 38. The closing detection switch is connected to the control circuit, described later, provided on thefirst circuit board 38. - Also, a group of
protrusions framework 22 are provided on the left andright side walls front wall 22 a of theframework 22, as shown in FIG. 18. While thepivotal arms lower half 62, their sides where the engagingtabs protrusions lower half 62. - As shown in FIG. 7, a
second circuit board 53 which may be a flexible printed circuit board is mounted to the inner side of theupper half 44. Thesecond circuit board 53 is bonded to ashield sheet 51 joined by screws to the inner side of theupper half 44 so that it is sandwiched between theshield sheet 51 and theupper half 44. Theshield sheet 51 is connected to a grounding potential port on thesecond circuit board 53. A liquid crystal display (LCD)panel 52 electrically connected to thesecond circuit board 52 is mounted on theshield sheet 51 as shown in FIG. 19. TheLCD panel 52 is exposed with its display surface via anopening 45 provided in theupper half 44 to the outside of theupper half 44, as shown in FIGS. 5 and 6. TheLCD panel 52 may display various information about the operations of the disk player. - A set of diaphragm switches56, 57, 58, 59, 60, and 61 are mounted on the
second circuit board 53 as shown in FIG. 7. The diaphragm switches 56, 57, 58, 59, 60, and 61 are actuated by pressing action of correspondingprotrusions respective buttonswitches upper half 44, as shown in FIGS. 20 and 21. Thebuttonswitches - The control circuit is mounted together with an audio circuit on the
first circuit board 38, which are energized by the rechargeablesecondary cell 68 held in thebattery storage 66 in thelower half 62 or a set of SUM3 or R6U type primary cells held in a battery pack which may be mounted to the rear side of thelower half 62. The control circuit is connected to thesecond circuit board 53. The control circuit is responsive to input signals produced by actuating the diaphragm switches 56, 57, 58, 59, 60, and 61 for driving the disk playback unit, described later, on thebase plate 1. The audio circuit in responsive to control signals from the control circuit converts a digital signal of interest retrieved from thedisk cartridge jack unit 39. The audio signal is further transmitted to an earphone or headphone connected to thejack unit 39 and perceived as acoustic sounds through the earphone or headphone. - The
jack unit 39 is mounted on thefirst circuit board 38 as shown in FIG. 7. Thejack unit 39 is inserted into anotch 31, shown in FIG. 16, provided in thefront wall 22 a of theframework 22 joined to thefirst circuit board 38 so that its front end is exposed to anopening 34, shown in FIG. 6, provided in thefront wall 32 a of thestrip 32 joined to thefront wall 22 a of theframework 22. - A
connector 39 a to which a connector plug for a remote controller is coupled is provided adjacent to thejack unit 39. Theconnector 39 a is also inserted into thenotch 31 provided in thefront wall 22 a of theframework 22 so that its front end is exposed via theopening 34 provided in thefront wall 32 a of thestrip 32 to the outside of thehousing 151. - As best shown in FIG. 12, the
opening 34 in thefront wall 22 a of thestrip 32 and theslide knob 33 for actuating thelock lever 130 are located in downwardly projectingportions strip 32. The projectingportions recesses front wall 22 a of theframework 22 when thestrip 32 is joined to the outer side of theframework 22 as shown in FIG. 6. - A
hold knob 63 for operating ahold switch 63 a for maintaining the operating mode and state is provided on thefront wall 62 a of thelower half 62. Thehold knob 63 is mounted to anoperator 63 b of thehold switch 63 a secured to thefirst circuit board 38 and can be slid along the front side of thelower half 62 for switching on and off thehold switch 63 a. Theoperator 63 b of thehold switch 63 a extends to the front side of thelower half 62 across notches provided at the lowermost in thefront wall 32 a of theframework 32 and thefront wall 22 a of thestrip 32. - As shown in FIG. 8, a couple of through
openings 132 are provided in the rear wall 62 b of thelower half 62 for allowing connector terminals of thefirst circuit board 38 to be exposed. Ascrew hole 134 is also provided between the two throughopenings 132 in the rear wall 62 b of thelower half 62 for fastening the battery pack containing a set of the primary cells. - More specifically, the battery pack is mounted by a screw inserted in the
screw hole 134 to the rear wall 62 b of thelower half 62 with its positive and negative electrode ports extending through theopenings 132 to corresponding connector terminals. - Referring to FIG. 22, a
conductive strip 138 for grounding is electrically connected to theshield sheet 51 which supports thesecond circuit board 53 in theupper half 44. Theconductive strip 138 may be made of an electrically conductive metal and extends along one side of theupper half 44. Theconductive strip 138 has anengaging finger 137 thereof for engagement with anengaging hole 136 provided in theshield sheet 51 as shown in FIG. 23. Theconductive strip 138 is bonded by an adhesive or the like to the lower side of theshield sheet 51 with itsengaging finger 137 fitting into the engaginghole 136. - The
conductive strip 138 also has aspring portion 139 for pressing theholder 16 located beneath the lower side of theupper half 44. Theconductive strip 138 is electrically connected to theholder 16 with itsspring portion 139 pressing against the upper side of theholder 16 as shown in FIG. 22. In the disk player, theconductive strip 138, theholder 16 made of an electrically conductive metal, and theframework 22 made of an electrically conductive metal in a combination permit electrical connection between theLCD panel 52 and the grounding potential port on thefirst circuit board 38. The grounding potential port on thefirst circuit board 38 is connected to a connector terminal which serves as a grounding potential port and is coupled to the negative electrode terminal of thesecondary cell 68 held in thebattery storage 66. Theconductive strip 138 remains urged by itsspring portion 139 to depart theupper half 44 from the upper surface of thelower half 62. - Moreover, the
conductive strip 138 has two spring portions54 and 55 thereof for pressing thedisk cartridge base plate 1 mounted in thelower half 62, as shown in FIG. 23. - As shown in FIG. 21, the
upper half 44 has aleaf spring 72 mounted byscrews 73 to one end of the lower or inner side or thelower half 62 facing side thereof, which is opposite to the end of theconductive strip 138, for pressing thedisk cartridge holder 16 against thebase plate 1. Theleaf spring 72 has at both ends twopressing portions disk cartridge - When the
disk cartridge 2020 or 222 is loaded into theholder 16, it is urged at all the corners by thesprings portions leaf spring 72 and thus held securely in the cartridge loading section on thebase plate 1. - The
leaf spring 72 also has apressing portion 71 thereof for pressing against theholder 16. Thepressing portion 71 of thelead spring 72 presses down theupper half 44 against thelower half 62. - Provided on the
base plate 1 which is mounted to theframework 22 and installed in thelower half 62 forming a main body with theframework 22 are the cartridge loading section la for holding thedisk cartridge optical disk disk cartridge optical disk - The
base plate 1 equipped with the disk playback unit and mounted to theframework 22 in helower half 62 can be a main body together with theframework 62. - The disk playback unit on the
base plate 1 is now explained in more detail. - As shown in FIG. 7, a
spindle motor 2 is mounted to substantially a center region of the lower side of thebase plate 1 with its drive shaft extending upwardly. Thedrive shaft 2 a of thespindle motor 2 extends across a through aperture provided in substantially a center region of thebase plate 1 to above thebase plate 1. Thedrive shaft 2 a of thespindle motor 2 is joined to a disk table 3. The disk table 3 may be made of substantially a disk like shape of a synthetic resin material. The disk table 3 has a centeringportion 4 provided on the upper side thereof for engagement with a center hole of theoptical disk 201 or theoptomagnetic disk 221 so that it can be aligned axially with theoptical disk 201 or theoptomagnetic disk 221. Also, a magnet is mounted to the top of the centeringportion 4 of the disk table 3 for magnetically attracting themetal hub 207 of the disk. When theoptical disk 201 or theoptomagnetic disk 221 is placed on the disk table 3, its center hole is accepted in the centeringportion 4 and simultaneously, itshub 207 is magnetically attracted by the magnet for correct positioning and holding. This also permits the center hole of theoptical disk 201 or theoptomagnetic disk 221 to be aligned with the axis of thedrive shaft 2 a of thespindle motor 2. When thespindle motor 2 is driven, theoptical disk 201 or theoptomagnetic disk 221 rotates together with the disk table 3. - An
optical pickup 11 is mounted on thebase plate 1. Theoptical pickup 11 includes an optical block where a laser diode as a light source, a photosensitive element such as a photo transistor, and other optical devices for directing a beam of light emitted from the laser diode to anobjective lens 12 are installed. In action, the beam of light emitted from the laser diode in theoptical pickup 11 is directed through theobjective lens 12 and focused on a signal recording layer of theoptical disk 201 or theoptomagnetic disk 221 placed on the disk table 3. Also, a reflection of the light reflected on theoptical disk 201 or theoptomagnetic disk 221 is passed through theobjective lens 12 and an optical device and received by the optical block in theoptical pickup 11 where it is translated by the photosensitive element to a data signal such as an audio signal recorded on theoptical disk 201 or theoptomagnetic disk 221. - As shown in FIG. 7, the
optical pickup 11 is supported by aguide shaft 13 and aguide strip 14 mounted beside thespindle motor 2 on thebase plate 1 and arranged for moving in radial directions along theoptical disk 201 or theoptomagnetic disk 221 placed on the disk table 3 as being guided by theguide shaft 13 and theguide strip 14. The movement of theoptical pickup 11 is driven by apickup driving motor 5 mounted to the lower side of thebase plate 1. Theoptical pickup 11 is located on the lower side of thebase plate 1 and actuated with itsobjective lens 12 across an opening 11 a provided in thebase plate 1 so that it can face theoptical disk 201 or theoptomagnetic disk 221 placed on the disk table 3. In action, theoptical pickup 11 is moved in the radial directions along theoptical disk 201 or theoptomagnetic disk 221 placed and rotated on the disk table 3 to scan the signal recording layer of theoptical disk 201 or theoptomagnetic disk 221 with its beam of light for reading a data signal of interest. - A pair of positioning pins6 and 7 are mounted upright on the cartridge loading section la of the upper side of the
base plate 1 for engagement with corresponding positioning holes 211 and 212 of thedisk cartridge disk cartridge cartridge loading section 1 a for holding thedisk cartridge - When the
disk cartridge cartridge loading section 1 a, it is held with the positioning pins 6 and 7 and the height adjusting protrusions and can thus be positioned correctly in both the horizontal and vertical directions. Simultaneously, theoptical disk disk cartridge cartridge body 205. - Upon loading of the
disk cartridge base plate 1 is pressed and turned on by thecartridge body 205 thus detecting and indicating that thedisk cartridge cartridge loading section 1 a. At the same time, the identification aperture 224 of thecartridge base plate 1 to identify the type of thedisk cartridge first circuit board 38. - The
holder 16 supported by the twopivotal arms base plate 1 and joined to theupper half 44 which serves as a cover for thelower half 62 will now be described in more detail. - The
holder 16 may be fabricated by folding a metal sheet and is provided, as shown in FIGS. 6 and 7, with a top portion, two, left and right, side wall portions extending downwardly from both sides of the top portion, and support strips 18 and 19 folded inwardly of the lowermost of the side wall portions thus allowing thedisk cartridge - As the
disk cartridge cartridge loading inlet 16 a into theholder 16, it is held by the top portion at top, the left and right side wall portions at both sides, and the support strips 18 and 19 at bottom. While thedisk cartridge center hole 206,positioning apertures disk identification aperture 213 face downwardly of theholder 16. - The
holder 16 has a shutter opening flap projected inwardly from an intermediate portion of one of the side walls thereof. When theholder 16 receives thedisk cartridge slide guide groove 210 and comes into direct contact with one end of theshutter disk cartridge holder 16, theshutter cartridge body 205 by the action of the shutter opening flap thus to clear theopening shutter closing flap 20 extending inwardly is provided on the front end of the other side wall of theholder 16 as shown in FIG. 7. When theholder 16 receives thedisk cartridge shutter closing flap 20 engages with and holds a portion of theshutter opening disk cartridge holder 16, theshutter cartridge body 205 and returned to its closing state by the action of theshutter closing flap 20 thus to close theopening - When the
holder 16 joined to theupper half 44 for movement with theupper half 44 is turned in the direction denoted by the arrow C in FIG. 6 to depart from thelower half 62, itscartridge inlet 16 a is suspended between theupper half 44 and thelower half 62. As thedisk cartridge cartridge inlet 16 a into theholder 16, theholder 16 is turned back in the opposite direction denoted by the arrow E in FIG. 6 together with theupper half 44 towards thelower half 62. This allows thedisk cartridge holder 16 to be positioned at the cartridge loading section la on thebase plate 1. Thedisk cartridge cartridge loading section 1 a is pressed down against thebase plate 1 by the urging force of thesprings pressing portions leaf spring 72 which are mounted to the inner side of theupper half 44. - An
eject lever 8 for ejecting thedisk cartridge holder 16 is mounted on the upper side of thebase plate 1 where the cartridge loading section la is located, which can be actuated when theholder 16 is turned in the direction denoted by the arrow C in FIG. 6 to depart from thebase plate 1. As shown in FIG. 7, theeject lever 8 is joined at the proximal end to a pivot mounted upright on thebase plate 1 for pivotal movement about the pivot and remains urged for movement with its distal end inwardly of theholder 16 by a spring not shown. - When the
disk cartridge holder 16, it presses and turns theeject lever 8 as resisting the urging force of the spring. Theeject lever 8 then comes into engagement with an engaging member mounted on the back side of thebase plate 1 and is maintained at a retracted position outside thecartridge loading section 1 a. - When the
holder 16 with thedisk cartridge base plate 1, theeject lever 8 disengages from thebase plate 1 and is turned towards the cartridge loading section la by the urging force of the spring. This causes thecartridge holder 16. - As shown in FIGS. 5, 6, and7, the disk player described above has the
battery storage 66 bulged downwardly from the back side of thelower half 62. When the disk player is placed on a level P such as the top of a desk with the back side of itslower half 62 facing down as shown in FIG. 25, the upper side of theupper half 44 tilts down from the back to the front. Accordingly, theLCD panel 52 of theupper half 44 comes in the front of the user who can thus read its display with much ease. Also, thebuttonswitches upper half 44 are allowed to be easily operated. - A procedure of operating the disk player of the present invention is now explained.
- In a stop mode of the disk player with the
disk cartridge holder 16, the cartridge loading detection switch on thebase plate 1 is inactivated and the control circuit on thefirst circuit board 38 disables the disk playback unit regardless of the action of any of thebuttonswitches eject lever 8 stays in thecartridge loading section 1 a as being urged by the spring. - Upon being connected to the power source, the control circuit on the
first circuit board 38 examines whether any of thebuttonswitches buttonswitches disk cartridge cartridge loading section 1 a and then examined whether or not theupper half 44 is turned down towards thelower half 62 and shuts off the opening side of thelower half 62. When it judges that theupper half 44 closes down thelower half 62, the control circuit operates and controls the disk playback unit according to the action of thebuttonswitches - For loading the
disk cartridge upper half 44 is turned up in the direction denoted by the arrow C in FIG. 6 to move theholder 16 away from thelower half 62. Then, thedisk cartridge cartridge inlet 16 a into theholder 16 with thedisk cartridges 220 and 221. Theupper half 44 and itsholder 16 with thedisk cartridge lower half 62. As theupper half 44 has shut off the upper side of thelower half 62, thedisk cartridge base plate 1. Simultaneously, thedisk cartridge disk cartridge buttonswitches optical disk disk cartridge - When the playback of the data signal of interest has been finished, the
disk cartridge upper half 44 in the direction denoted by the arrow C in FIG. 6 to depart from thelower half 62 to move theholder 16 away from the disk playback unit. More specifically, as theholder 16 moves in the direction denoted by the arrow C in FIG. 6 to depart from the cartridge loading section la, theeject lever 8 is disengaged from thebase plate 1 and turned towards the cartridge loading section la by the urging force of the spring thus pressing out thedisk cartridge disk inlet 16 a. When thedisk cartridge holder 16, it can be unloaded from theholder 16 by pulling out its exposed portion. - Although the foregoing description of the present invention has been made in the form of a display player using the
disk cartridge - Moreover, the present invention is applicable to a mobile or portable electronic apparatus such as a radio receiver with equal success.
- As set forth above, the electronic apparatus according to the present invention comprises an upper half, a lower half, a framework, and a circuit board having a size substantially identical to that Of the framework and a degree of rigidity enough to be mounted to one side of the framework. The upper half and the lower half are arranged so as to sandwich and enclose the framework therebetween. Since the circuit board with a degree of rigidity is mounted to the framework, the rigidity and physical strength of the framework will be increased.
- Also, the apparatus for recording and/or playing back on a recording medium according to the present invention includes a first circuit board equipped with a grounding potential unit and a second circuit board connected to the first circuit board which both are electrically shielded by a cover member equipped with a shielding material connected to the grounding potential unit. Accordingly, the shielding material remains connected to the ground through a grounding line thus preventing a primary part of the apparatus from being statically charged.
Claims (24)
1. An electronic apparatus comprising:
an upper half and a lower half;
a framework; and
a circuit board which is substantially equal in the size to the framework and has a degree of rigidity enough to be mounted to one side of the framework,
wherein the upper half and the lower half are arranged so as to sandwich and enclose the framework therebetween.
2. An electronic apparatus according to claim 1 , further comprising a strip member mounted to an outer side of the framework and located between the upper half and the lower half.
3. An electronic apparatus according to claim 2 , wherein the strip member is folded into a four-sided shape and arranged movable relative to the strip member.
4. An electronic apparatus according to claim 1 , further comprising a base mounted to an inner side of the framework.
5. An electronic apparatus according to claim 1 , wherein the framework has at least one pivotal arm pivotably mounted thereto and joined to the upper half so that the upper half can pivotably be turned relative to the lower half.
6. An electronic apparatus according to claim 5 , wherein the framework has a lock member for locking the upper half at its closed position over the framework.
7. A recording medium record and/or playback apparatus comprising:
a record and/or playback units having a first circuit board provided with a grounding potential unit;
a cover body pivotably mounted to the record and/or playback unit and including a shield member connected to the grounding potential unit and a second circuit board connected to the first circuit board;
a holder made of a metallic material and arranged to travel between the location for loading a recording medium into the record and/or playback unit and the location spaced away from the record and/or playback unit as the cover body is pivotably moved; and
a grounding member made of a metallic material, provided with an engaging portion for engagement with the shield member and a contact for coming into direct contact with the holder, and connected to the shield member to urge the cover body in a direction of the holder pivotably turning.
8. A recording medium record and/or playback apparatus according to claim 7 , wherein the grounding member has a pressing portion thereof for pressing the recording medium against the record and/or playback unit.
9. A recording medium record and/or playback apparatus according to claim 7 , wherein the cover body has a window and at least one operating buttonswitch mounted thereon, and the second circuit board has at least one switch actuated by the action of the operating buttonswitch and a display element provided opposite to the window.
10. A recording medium record and/or playback apparatus, further comprising a base, a framework on which the base and the first circuit board are mounted, a strip member mounted to an outer side of the framework, and a half accommodating the framework, wherein the strip member is located between the cover body and the half when the cover body is closed over the half.
11. A recording medium record and/or playback apparatus according to claim 10 , wherein the framework has at least one pivotal arm pivotably mounted thereto and joined to the cover body and a lock member for locking the cover body at its closed position over the half.
12. A recording medium record and/or playback apparatus comprising:
a main body including a recording medium record and/or playback units; and
a cover body pivotably mounted to the main body and having at least one operating buttonswitch mounted on an upper side thereof,
wherein the main body includes an opening for loading of a battery, a storage for storing the battery loaded through the opening, and a battery cover for opening and closing the opening, wherein the storage is formed by the main body bulged downwardly at its lower side.
13. A recording medium record and/or playback apparatus according to claim 12 , the opening is provided in a side of the main body and the battery cover is pivotably mounted on the main body with one end of the opening designated as the pivotal base.
14. A recording medium record and/or playback apparatus according to claim 12 , wherein the cover body has a display mounted on an upper side thereof.
15. A recording medium record and/or playback apparatus according to claim 12 , further comprising a holder arranged to travel between the location for recording medium record and/or playback and the location spaced away from the location for recording medium record and/or playback as the cover body is pivotably moved.
16. A recording medium record and/or playback apparatus according to claim 15 , wherein the holder is arranged for pivotal movement relative to the record and/or playback unit.
17. A recording medium record and/or playback apparatus according to claim 12 , wherein the main body includes a base on which the record and/or playback unit is mounted, a framework to which the base is mounted, a strip member mounted to an outer side of the framework, and a half accommodating the framework, the strip member located between the cover body and the half when the cover body is closed over the half.
18. A recording medium record and/or playback apparatus according to claim 17 , wherein the framework has at least one pivotal arm pivotably mounted thereto and joined to the cover body and a lock member for locking the cover body at its closed position over the main body.
19. A recording medium record and/or playback apparatus comprising:
a main body including an upper half, a lower half, and a recording medium record and/or playback unit which are arranged to substantially a rectangular parallelopiped shape, the lower half having an opening provided in a side thereof at a corner for loading a battery and the opening being opened and closed by the action of a battery cover pivotably mounted to the side of the lower half; and
a holder mounted to the main body for traveling between the location of loading a recording medium onto the record and/or playback unit and the location spaced away from the record and/or playback unit.
20. A recording medium record and/or playback apparatus according to claim 19 , wherein the main body includes a base on which the record and/or playback unit is mounted, a framework joined to the base and accommodated in the lower half, and a strip member mounted to an outer side of the framework.
21. A recording medium record and/or playback apparatus according to claim 20 , further comprising a circuit board mounted to a lower side of the framework.
22. A recording medium record and/or playback apparatus according to claim 21 , wherein the opening is provided in the side of the lower half at a level lower than the circuit board installed in the lower half.
23. A recording medium record and/or playback apparatus according to claim 19 , further comprising a cover body arranged for movement relative to the main body as the holder is pivotably moved, and provided with at least one operating buttonswitch on the upper side thereof.
24. A recording medium record and/or playback apparatus according to claim 23 , wherein the cover body has a display mounted on the upper side thereof.
Priority Applications (1)
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US10/023,848 US20020044515A1 (en) | 1996-11-20 | 2001-12-21 | Electronic apparatus and apparatus for recording and/or playback on recording medium |
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JPP08-309795 | 1996-11-20 | ||
JP30979596 | 1996-11-20 | ||
US09/101,920 US6307743B1 (en) | 1996-11-20 | 1997-11-20 | Electronic apparatus and apparatus for recording and/or playback on recording medium |
US09/595,617 US6587419B1 (en) | 1996-11-20 | 2000-06-16 | Electronic apparatus and apparatus for recording and/or playback on recording medium |
US10/023,848 US20020044515A1 (en) | 1996-11-20 | 2001-12-21 | Electronic apparatus and apparatus for recording and/or playback on recording medium |
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US09/595,617 Division US6587419B1 (en) | 1996-11-20 | 2000-06-16 | Electronic apparatus and apparatus for recording and/or playback on recording medium |
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US10/023,848 Abandoned US20020044515A1 (en) | 1996-11-20 | 2001-12-21 | Electronic apparatus and apparatus for recording and/or playback on recording medium |
US10/769,910 Expired - Fee Related US7275253B2 (en) | 1996-11-20 | 2004-02-03 | Electronic apparatus and apparatus for recording and/or playback on recording medium |
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US10/023,767 Abandoned US20020044514A1 (en) | 1996-11-20 | 2001-12-21 | Electronic apparatus and apparatus for recording and/or playback on recording medium |
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US10/769,910 Expired - Fee Related US7275253B2 (en) | 1996-11-20 | 2004-02-03 | Electronic apparatus and apparatus for recording and/or playback on recording medium |
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US20060179446A1 (en) * | 2005-02-08 | 2006-08-10 | Bickford Brian L | Electrostatic discharge device and method for media devices |
US20070047136A1 (en) * | 2005-08-26 | 2007-03-01 | Seagate Technology Llc | Ground post in data storage device |
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Publication number | Priority date | Publication date | Assignee | Title |
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US7095862B2 (en) * | 2002-01-31 | 2006-08-22 | Church Of Spirtual Technology | Headphone amplifier |
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US20060179446A1 (en) * | 2005-02-08 | 2006-08-10 | Bickford Brian L | Electrostatic discharge device and method for media devices |
US7254820B2 (en) * | 2005-02-08 | 2007-08-07 | Delphi Technologies, Inc. | Electrostatic discharge device and method for media devices |
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Also Published As
Publication number | Publication date |
---|---|
US20020044514A1 (en) | 2002-04-18 |
US20040158846A1 (en) | 2004-08-12 |
US7275253B2 (en) | 2007-09-25 |
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