|Publication number||USRE42926 E1|
|Application number||US 12/209,045|
|Publication date||15 Nov 2011|
|Priority date||27 Aug 2001|
|Publication number||12209045, 209045, US RE42926 E1, US RE42926E1, US-E1-RE42926, USRE42926 E1, USRE42926E1|
|Inventors||Joe D. Norwood, Anthony Hidalgo|
|Original Assignee||Trompeter Electronics, Inc.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (57), Non-Patent Citations (35), Referenced by (5), Classifications (14), Legal Events (4)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This application is a continuation of U.S. application Ser. No. 10/436,351, filed May 13, 2003 now U.S. Pat No. 6,921,283 (that published as U.S. Pub. Pat. App. No. 2004-0038584-A1 on Feb. 26, 2004), which is incorporated by reference herein in its entirety.
U.S. application Ser. No. 10/436,351 is a continuation-in-part of U.S. application Ser. No. 09/938,857 filed Aug. 27, 2001 (that issued as U.S. Pat. No. 6,561,841 on May 13, 2002), which is incorporated by reference herein in its entirety.
U.S. application Ser. No. 10/436,351 is also a continuation-in-part of U.S. application Ser. No. 10/038,581, filed Jan. 8, 2002 (that published as U.S. Pub. Pat. application No. 2003-0129870-A1 on Jul. 10, 2003, now abandoned), which is incorporated by reference herein in its entirety.
1. Field of the Invention
The present invention relates generally to the field of electrical connectors. In particular, the present invention relates to coaxial RF connectors.
2. Background Art
Electrical connectors provide couplings between electronic elements and/or devices. Many different types of electrical connectors exist and have been used to provide removable electrical connections between electronic elements and devices. On such type is RF (radio frequency) connectors.
Bayonet mechanisms are one way of securing such removable RF electrical connectors. One type of removable or separable electrical connector having a bayonet mechanism is known as a BNC or Bayonet Neil-Concelman mating connector pair. BNC mating connector pairs facilitate attachment of coaxial electrical cables to electronic elements or devices. Typical BNC mating connector pairs include a jack-side connector mounted to an electronic device or element and a plug-side connector connected to a cable. The jack-side connector typically includes a tubular cylindrical housing and a socket formed in a central location of the housing. The plug-side connector typically includes a tubular cylindrical connector body having a central contact formed in a central location of the connector body. The central contact of the plug-side connector is inserted into the socket of the jack-side connector and the connector body of the plug-side connector is inserted into the housing of the jack-side connector.
The jack-side connector also includes outwardly extending lugs formed on the outer surface of the housing. The plug-side connector includes a bayonet sleeve rotatably mounted on the outer surface of the connector body. The bayonet sleeve includes slots, which are typically J-shaped (J-slots), to mate with the lugs on the jack-side connector. The J-slots include an initial portion and a terminal portion. To connect the BNC mating connector pair, the slots in the bayonet sleeve first receive the lugs into the initial portion of the J-shaped slots, such that the mating connector pair is in a position of partial engagement. The bayonet sleeve is then rotated relative to the jack-side connector until the lugs slide into the terminal portion of the J-shaped slots. The mating connector pair is now in a fully engaged position, where the lugs are held and locked into the terminal portion of the J-shaped slots.
U.S. Pat. No. 4,037,909 to Trompeter et al. and U.S. Pat. No. 3,708,781 to Trompeter, which are herein incorporated by reference in their entirety, each disclose full-size BNC mating connector pairs. Further, BNC mating connector pairs are commercially available from Trompeter Electronics, Inc., Westlake Village, Calif. A common use of the Trompeter 75 ohm BNC mating connector pair is for telephone company central office DS3 applications. Full-size BNC mating connector pairs also see high volume use in the broadcast industry for providing high bandwidth connections between television broadcast equipment.
The twist-lock connection of the bayonet mechanism is a central feature of BNC connector pairs, and provides a convenient and reliable means for electrically connecting various electronic elements and devices. BNC connector pairs allow a reliable electrical connection to be made without the danger of the jack-side and plug-side connectors gradually working loose or becoming inadvertently unplugged.
The bayonet mechanism of BNC mating connector pairs provides a positive engagement between jack-side connectors and plug-side connectors. This positive engagement allows a user to determine whether a jack-side connector is fully engaged with a plug-side connector by attempting to manually rotate the bayonet sleeve (e.g., using his or her fingers). If substantial resistance is encountered, then the mating connector pair is fully engaged.
Large numbers of full-size BNC mating connector pairs are often positioned in close proximity (both vertically and horizontally) on network elements. Increased market demand for telephone lines (for voice, fax and data traffic) has caused additional crowding in telephone company central offices. It is desired to increase the density of connections on, for example, digital cross connect modules. However, the mechanical footprint of the standard BNC connector hinders further increases in connection densities.
Connectors, such as the SMB connector, with smaller footprints might be used, but they lack certain advantages (e.g., the bayonet locking feature and field crimpability) of BNC connectors, which have become an industry standard. Therefore, the present inventors have recognized that, what is needed, is a connector having the advantages of the BNC connector but having a smaller footprint to allow an increase in connector population density on, for example, network elements such as an OC-48 multiplexer or a DSX (digital cross connect).
Another problem that occurs when multiple mating connector pairs are positioned in close proximity is that it is often not possible for a user to look at the mating connector pairs from a viewpoint that allows visual inspection of the relative positioning between the lug and the J-shaped slot to confirm full engagement. Consequently, it is often difficult to manually determine whether a jack-side connector is fully engaged with a corresponding plug-side connector.
Thus, a need also exists for an improved mating connector pair that provides visual indication of the engagement position of the plug-side connector relative to the jack-side connector when the plug-side connector is fully engaged with the jack-side connector.
The present invention is drawn to a plug-side connector and a jack-side connector in a mating connector pair, where the plug-side connector is configured for engagement with the jack-side connector to form an electrical connection, along with an electromagnetic field. The plug-side connector includes a plug-side connector body and a bayonet sleeve rotatably connected to the connector body. The bayonet sleeve has an outer diameter of approximately 0.5 inches or less.
The connector assembly of the present invention is smaller and more compact than previous connector assemblies, particularly full-size BNC mating connector pairs. The connector assembly of the present invention achieves an improvement of approximately 30 percent more interconnects per given area than full-size BNC mating connector pairs, while including all of the attributes of the standard full-size BNC connector, including the same reliability, materials, mechanical stability, 75 ohm impedance and return loss attributes. Further, the connector assembly of the present invention maintains the same tooling and installation processes and can be field-terminated using the same industry-standard cable strip tools, contact crimp tools, crimp sleeve crimp tools and termination practices as the full-size BNC connectors.
Further embodiments, features, and advantages of the present inventions, as well as the structure and operation of the various embodiments of the present invention, are described in detail below with reference to the accompanying drawings.
The foregoing and other features and advantages of the present invention will be apparent from the following, more particular description of a preferred embodiment of the invention, as illustrated in the accompanying drawings in which:
A preferred embodiment of the present invention is now described with reference to the Figures, in which like reference numerals can be used to indicate identical or functionally similar elements. Also in the Figures, the left most digit of each reference numeral may correspond to the Figure in which the reference numeral is first used.
While specific configurations and arrangements are discussed, it should be understood that this is done for illustrative purposes only. A person skilled in the relevant art will recognize that other configurations and arrangements can be used without departing from the spirit and scope of the invention. It will be apparent to a person skilled in the relevant art that this invention can also be employed in a variety of other devices and applications.
When working in tight areas, it is sometimes hard to determine if a plug and jack-side of a connector are fully mated or engaged. Embodiments of the present invention provide a jack-side connector having a first securing device and a plug-side connector having a sleeve rotatably coupled thereto. The sleeve has a second securing device that is complementary to the first securing device and an indicator located on an edge of the sleeve. The indicator is contrasted against a characteristic (e.g., color, material, etc.) of a portion (e.g., a washer) of the connector system to provide visual indication that the first securing device is securely engaged with the second securing device.
Miniature-BNC (M-BNC) mating connector pair 100 is shown in
M-BNC mating connector pair 100 includes a plug-side connector 102 and a jack-side connector 104. Plug-side connector 102 is configured for engagement with jack-side connector 104 to form an electrical connection.
As shown in
Jack-side connector 104 includes jack-side connector body 112 with lug 122 disposed on a peripheral surface of jack-side connector body 112. Jack-side connector 104 is inserted into plug-side connector 102 so that lug 122 is inserted into initial portion 118 of slot 116. Bayonet sleeve 108 is then rotated until plug-side connector 102 and jack-side connector 104 are fully engaged such that lug 122 rests in terminal portion 120 of slot 116.
Bayonet sleeve 108 further includes an indicator 124 located on bayonet sleeve 108. Indicator 124 aligns with lug 122 of jack-side connector body 112 when slot 116 of bayonet sleeve 108 is fully engaged with lug 122 (i.e., when lug 122 rests in terminal portion 120 of slot 116) to provide a visual indication of the secure connection.
Jack-side connector 104, plug-side connector body 106 and bayonet sleeve 108 are more fully described with reference to
Lugs 122 are disposed on a peripheral surface of jack-side connector body 112. Lugs 122 are preferably cylindrical in shape and extend radially outward from the peripheral surface of jack-side connector body 112. In a preferred embodiment, jack-side connector 104 includes two lugs 122 positioned on jack-side connector body 112 approximately one hundred eighty degrees apart from one another. In an embodiment, the distance between the outermost surfaces of lugs 122 is between approximately 0.345 inches and 0.365 inches. In a preferred embodiment, the distance between the outermost surfaces of lugs 122 is approximately 0.355 inches. In one embodiment, lugs 122 have a diameter of between approximately 0.053 inches and 0.057 inches. In one embodiment, lugs 122 are located between approximately 0.195 inches to approximately 0.201 inches from a front edge of jack-side connector body 112.
Lumen 204 extends longitudinally through jack-side connector body 112. Jack-side conductor 206 is disposed within lumen 204, and is configured to mate with a plug-side conductor 302 (discussed below) of plug-side connector 102 to form an electrical connection. In an embodiment, jack-side conductor 206 is a female socket having an inner diameter between approximately 0.026 inches and approximately 0.032 inches. In a preferred embodiment, the female socket has an inner diameter of approximately 0.029 inches. In one embodiments, jack-side conductor 206 has an outside diameter between approximately 0.052 inches and approximately 0.058 inches and a length of approximately 0.157 inches.
A jack-side connector insulator 205 is preferably provided within lumen 204 and around jack-side conductor 206 to electrically isolate jack-side conductor 206 from jack-side connector body 112. In a preferred embodiment, the jack-side connector insulator 205 is formed of polytetrafluoroethylene (PTFE) and/or tetrafluoroethylene (TFE) and has an outer diameter between approximately 0.189 inches and 0.195 inches, and preferably 0.192 inches. It is to be appreciated, jack-side connector insulator can be formed of other known materials. In one embodiments, a depth of lumen 204 is between approximately 0.177 inches and approximately 0.183 inches.
In an embodiment, plug-side connector body 106 has an average inside diameter between approximately 0.180 inches and approximately 0.195 inches. In a preferred embodiment, plug-side connector body 106 has an average inside diameter between approximately 0.183 inches and approximately 0.191 inches.
In an embodiment, spring fingers 304 have an outside diameter of between approximately 0.253 inches and approximately 0.259 inches.
Plug-side conductor 302 is configured to mate with jack-side conductor 206. In an embodiment, plug-side conductor 302 is a male contact which mates with female socket 206 of jack-side connector 104, where the male contact has an outer diameter between approximately 0.026 inches and approximately 0.032 inches. In a preferred embodiment, the male contact has an outer diameter of approximately 0.029 inches. Plug-side connector insulator 303 is preferably provided around plug-side conductor 302 to electrically isolate plug-side conductor 302. In a preferred embodiment, plug-side connector insulator 303 is formed of PTFE or TFE and has an outer diameter between approximately 0.157 inches and approximately 0.163 inches, and preferably approximately 0.160 inches. In one embodiment, a distance from a front surface 306 of plug-side connector insulator 303 to an end 308 of spring fingers 304 is between approximately 0.180 inches and approximately 0.200 inches. In one embodiment, a distance from end 308 of plug-side conductor 302 and an end 310 of spring fingers 304 is between approximately 0.035 inches and 0.055 inches.
In an alternate embodiment, plug-side conductor 302 and jack-side conductor 206 may be reversed so that plug-side conductor 302 is a female socket, and jack-side conductor 206 is a male contact. In a preferred embodiment, plug-side connector body 106 mates with jack-side connector body 112 such that spring fingers 304 fit within lumen 204 and plug-side conductor 302 mates with jack-side conductor 206 to form an electrical connection. Bayonet sleeve 108 is discussed in greater detail below with reference to
Bayonet sleeve 108 is configured to be rotatably mounted on plug-side connector body 106, and includes a recessed portion 402, slots 116 and an indicator 124, which is discussed in more detail below with reference to
In one embodiment, bayonet sleeve 108 has an outer diameter not greater than approximately 0.5 inches, preferably between approximately 0.425 inches and approximately 0.484 inches. In a preferred embodiment, bayonet sleeve has an outer diameter between approximately 0.430 inches and approximately 0.445 inches, and preferably approximately 0.437 inches.
Bayonet sleeve has an inner diameter between approximately 0.300 inches and approximately 0.310 inches. In a preferred embodiment, bayonet sleeve has an inner diameter between approximately 0.303 inches and approximately 0.307 inches, and preferably approximately 0.305 inches.
Slots 116 are configured and arranged for engagement with lugs 122 of jack-side connector 104. In a preferred embodiment, sleeve 108 includes two slots 116 positioned on recessed portion 402 approximately one hundred eighty degrees apart from one another, corresponding to two lugs 122 positioned approximately one hundred eighty degrees apart from one another on jack-side connector body 112 (see
As discussed above, slots 116 are configured and arranged to correspond and engage with lugs 122.
In one embodiment, a width of J-shaped slots 116 is between approximately 0.061 inches and approximately 0.067 inches. In one embodiment, a distance from terminal portion 120 to a front edge 123 of bayonet sleeve 108 is between approximately 0.051 inches and approximately 0.061 inches. In one embodiment, a distance from a highest point of detent 121 and front edge 123 of bayonet sleeve 108 is between approximately 0.071 inches to approximately 0.081 inches. In one embodiment, a distance from an upper most edge 125 of J-shaped slots 116 to front edge 123 of bayonet sleeve 108, is between approximately 0.155 inches to approximately 0.161 inches.
Mating or Engagement of Plug and Jack-Side Connectors
The mating and engagement of jack-side connector 104 and lugs 122 to plug-side connector 102 and slots 116 is further discussed with reference to
As shown in
When plug-side connector 102 is inserted into jack-side connector 104, a leading peripheral edge 208 (see
Visual Indication of Mating or Engagement
Bayonet sleeve 108 can include an indicator 124. Indicator 124 can be aligned with a reference point, so that when slots 116 are fully engaged with lugs 122, indicator 124 provides a visual indication that plug-side connector 102 is fully mated with jack-side connector 104. In one embodiment, sleeve 108 includes two indicators 124 positioned on sleeve 108 approximately one hundred eighty degrees apart from one another, which correspond to two slots 116.
In one example, indicator 124 is a V-shaped notch, as shown in FIGS. 1 and 4-6. In alternate examples, indicator 124 may be a dimple 700 (
In yet other examples, indicator 124 may be a ridge 800 (
In a further example, as shown in
In some examples, indication can be enhanced when indicator 124 is located adjacent a section 316 of bayonet sleeve 108 that has been rolled or crimped over body portion 106. This allows surface 312 to act as background for indicator 124. A color of portion 308 can be based on its material makeup (e.g., black zinc) or based on adding color (e.g., via anodizing, painting, coating, plating, etc.). Alternatively, a thin material (such as a thin paper or plastic washer) may be place against portion 308.
It is to be appreciated that although shown and discussed for a MBNC connector, the indication feature can be used for a BNC connector or any other connector system that requires full engagement for optimum functionality.
The foregoing description of the specific embodiments will so fully reveal the general nature of the invention that others can, by applying knowledge within the skill of the art (including the contents of the references cited herein), readily modify and/or adapt for various applications such specific embodiments, without undue experimentation, without departing from the general concept of the present invention. Therefore, such adaptations and modifications are intended to be within the meaning and range of equivalents of the disclosed embodiments, based on the teaching and guidance presented herein. It is to be understood that the phraseology or terminology herein is for the purpose of description and not of limitation, such that the terminology or phraseology of the present specification is to be interpreted by the skilled artisan in light of the teachings and guidance presented herein, in combination with the knowledge of one of ordinary skill in the art.
While the invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that they have been presented by way of example only, and not limitation, and various changes in form and details can be made therein without departing from the spirit and scope of the invention. Thus, the breadth and scope of the present invention should not be limited by any of the above-described exemplary embodiments, but should be defined only in accordance with the following claims and their equivalents. Additionally, all references cited herein, including journal articles or abstracts, published or corresponding U.S. or foreign patent applications, issued U.S. or foreign patents, or any other references, are each entirely incorporated by reference herein, including all data, tables, figures, and text presented in the cited references.
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|U.S. Classification||439/314, 439/315, 439/318|
|International Classification||H01R13/625, H01R13/52, H01R13/641, H01R13/646|
|Cooperative Classification||H01R13/641, H01R13/625, H01R2103/00, H01R24/40|
|European Classification||H01R13/641, H01R13/625, H01R24/40|
|5 Dec 2008||AS||Assignment|
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:NORWOOD, JOE D;HIDALGO, ANTHONY;SIGNING DATES FROM 20081119 TO 20081124;REEL/FRAME:021930/0992
Owner name: TROMPETER ELECTRONICS, INC., ARIZONA
|12 Mar 2014||FPAY||Fee payment|
Year of fee payment: 8
|3 Apr 2014||AS||Assignment|
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:COBARR SPA;REEL/FRAME:032592/0693
Effective date: 20140403
Owner name: M&G USA CORPORATION, WEST VIRGINIA
|12 Aug 2014||AS||Assignment|
Free format text: INTELLECTUAL PROPERTY SECURITY AGREEMENT;ASSIGNOR:TROMPETER ELECTRONICS, INC.;REEL/FRAME:033520/0957
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