CA1102057A - Hand grip mounted switch and strain relief - Google Patents
Hand grip mounted switch and strain reliefInfo
- Publication number
- CA1102057A CA1102057A CA294,750A CA294750A CA1102057A CA 1102057 A CA1102057 A CA 1102057A CA 294750 A CA294750 A CA 294750A CA 1102057 A CA1102057 A CA 1102057A
- Authority
- CA
- Canada
- Prior art keywords
- hand grip
- switch
- strain relief
- abutment
- assembly
- 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.)
- Expired
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/02—Construction of casings, bodies or handles
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L9/2836—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled
- A47L9/2842—Suction motors or blowers
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L9/2868—Arrangements for power supply of vacuum cleaners or the accessories thereof
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/32—Handles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H9/06—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S15/00—Brushing, scrubbing, and general cleaning
- Y10S15/10—Handles, reels and switches
Abstract
ABSTRACT OF THE DISCLOSURE
A floor care appliance or the like is provided with a hand grip having a switch retaining member that also serves as a portion of the means utilized for retention of a cord strain relief.
A floor care appliance or the like is provided with a hand grip having a switch retaining member that also serves as a portion of the means utilized for retention of a cord strain relief.
Description
Canadian Case 2148 This invention relates to a switch and strain relief assembly for use with a floor care appliance or the like and, more specifically, relates to a pair of abutment means which resiliently urge a switch holding plate against the strain relief.
Although the use of switch retaining members such as plates and the like that are screwedly fastened to the handle or hand grip, e.g., of a floor care appliance are old and well known, the same being generally used in conjunction with an electric cord strain relief mounted closely adjacent tc the switch, heretofore the mounting of the strain relief and switch retaining plate has generally been relatively independent. ~o advantageO then~ has been taken of the fact that both a strain relief and a switch retaining plate are required for cleaner operation so that a close cooperative mounting of these elements would tend to reduce the number of parts required for the total assembly~ probably simplify manufacturing assembly and lend itself to a cleanD effective overall design for the upper end of the propelling handle for a floor care appliance.
Accordingly, it is an object of this invention to provide a strain relief-switch retention member assemblage where close dependence of one on the other tends to simplify overall design requirements.
The invention may be characterized as a switch retaining plate~ switch, first means for abutment and strain relief including: the switch retaining plate having a generally planar expanse~ an aperture extending through the generally planar expanse, a switch extending the aperture~ a second means for abutment on the switch retaining plate projecting generally transverse to the generally planar expanse, one of the first means for abutment and said second means for abutment being resilient~ bendable and deformable so that~ upon deformation ~' ~ S7 Canadi2n Case 2148 of one of said first and second means for abutment, the switch retaining plate is resiliently urged against the strain relief.
Reference may now be had to the accompanying drawings for a better understanding of the inventionl both as to its organization and function, with the illustration being only exemplary, and in which:
Figure 1 is a perspective view of a floor care appliance handle utilizing the instant invention;
Figure 2 is a broken side elevational view of the handle and included hand grip, with certain parts shown in phantom;
Figure 3 is a bottom plan view of the structure shown in Figure l;
Figure 4 is a top plan view of the lower hand grip half, switch, wires and strain relief;
Figure 5 is a bottom plan view of the upper half of the hand grip; and Figure 6 is a bottom plan view of the lower hand grip piece.
As is shown most clearly in Figures 1 and 2, a handle 10 for an electrical appliance (not shown) such as a floor care machine~ is shown which includes a hand grip assembly 12, a strain relief 14 and a switch 16 for closing the circuit for the floor care appliance, the supply of current being provided by an electrical cord 18 including a plug (not shown) for securement to a wall socket (not shown).
The handle 10 is generally rectangular in cross section to provide a modern appearance and provides a convenient conveying means for conventionally leading the electrical cord 18 down-wardly within the handle 10. A bag hook 20 is provided on handle 10 for support of cord 18 when the same is not in use.
The lower portion of the handle 10 may~ of course, be attached, 11~2~57 Canadian Case 2148 conventionallyO to a bail or the like (not shown) of a vacuum cleanerO Such a connection, both electrical and mechanical, may take many forms and is not further described here since the same is well known and clearly taught in the prior art.
Turning to the more inventive aspects of the instant ApplicationO it can be seen that the hand grip 12 is comprised of upper and lower mating pieces 22 and 24r respectively, of generally semi-tubular configuration~ These two hand grip pieces are mounted in abutting relationship with their open sides 26 and 28, respectively, in confronting relationship so that a closed shaped configuration is obtained. This shape includes a lowerO inner portion 30 of the hand grip of rectan-gular cross section in configuration~ and intermediate portion 32 of necked down configuration and an upper, outer portion 34, shaped conveniently for the grasp of the user of the floor care appliance and being roughly circular in its cross section and including a bulbous portion 36 adjacent necked down portion 32.
Hand grip pieces 22 and 24 can best be seen in their unassembled state in Figures 4 and 5 and include generally horizontal flange portions 38, 40 and vertical flange portions 42, 440 respectively7 with vertical flange portion 42 formed on the inner periphery of the shell form of upper hand grip piece 22 and vertical flange portion 44 formed on lower hand grip piece 24 at its shell outer periphery. By this arrangement, when the hand grip pieces 22 and 24 are in assembled position, a lap joint is formed at the mating juncture of the two pieces to provide a reasonably rigid total assembly.
Upper hand grip piece 22 also includes a series of transversely extending ribs 46, 48, 50 and 52 and a longitudinal rib 53 which merge smoothly into the shell form of lower hand grip piece 22. These ribs serve to strengthen hand grip piece 22. Hand grip piece 24 also includes a series of transversely ~102~S7 Canadian Case 2148 extendingO slightly angled strengthening ribs 54, 56, 58 and 60 and longitudinal ribs 59, 61. These ribs only strengthen their individual hand grip pieces and do not serve as abutting members upon hand grip assembly 12, as they terminate short of each other so as to be spaced from each other when in assembled conditionO
At its upper, outer end, hand grip assembly 12 includes an attaching means maintaining the two hand grip pieces together at their upper distal endsO This attaching means takes the form of an internal pin 62, integral with and extending angularly inwardly from upper hand grip piece 22 and a hollow boss 64 also extending angularly inwardly but integral with lower hand grip piece 240 A bore 66, formed in boss 64, is dimensioned so as to receive pin 62 in a relatively tight manner so as to fix the two hand grip parts together.
Forwardly of transverse ribs 460 48, 50 and 52 on upper hand grip piece 22 is another transverse rib 68 that is an intermittent rib open in the middle, but it is an integral portion of a pair of stepped ribs 70, 72 extending generally aligned and axially of the hand grip piece 22. In a similar manner~ lower hand grip piece 24 includes an additional trans-verse, continuous full rib 740 joined to a pair of aligned axially extending stepped ribs 76, 78. These ribs abut with their counterparts on upper hand grip piece 22 when the hand grip 12 is in assembled condition, because these ribs are flush with the inner termination of vertical flange 44 on hand grip piece 24, while ribs 68~ 70 and 72 are flush with the inner termination of horizontal flange 38 of upper hand grip piece 220 This tortuous rib configuration and abutting relationship provides additional strength to the hand grip assembly 12 at the location of switch 160 ~ Q5 7 Canadian Case 2148 The remainder of the formation of upper hand grip piece 22 includes a pair of inner longitudinally extending ribs 80 and 820 disposed between the widest separation of the stepped ribs 70 and 720 to provide an additional strengthening in the area of the handle adjacent the strain relief 14. Forwardly of these two ribs is an inwardly extending threaded boss 84 that receives a screw 86 (Figure 2) to maintain the lower, inner end of hand grip piece 22 in assembled conditionO A
mediately disposed, inwardly extending rib 88 may serve as an inward limiting~ abutting means for switch 16 and does electrically isolate (Figure 2) the conductor retaining contacts 90~ 92 from each other upon final assemblyO
Lower hand grip piece 24 (Figure 6) is completed in form by a series of generally horizontal aligned tabs 94D 94, 96, 96 (Figure 6)D integral with the stepped ribs and extending outwardly thereof to provide a positive limiting means for inward movement of a switch body 98 of switch 16. These tabs are horizontally stepped at 100D 100 and 102, 102 to provide an inner offset planar surface 104 on which the inner of rear end of the switch body 98 rests, thus also limiting axial move-ment of the switch body relative to the hand grip 12.
As can also be seen in Figure 6, a generally rectan-gular bottom opening aperture 106:is provided in lower hand grip portion 24 for insertion of the switch 160 A slightly larger aperture 108 of generally truncated shape and extending through only the shell of the lower hand grip portion 24 thereby provides a mount for a switch-retaining member 110, the same resting on generally planar faces 112, 112 formed on the shell of this hand grip piece when assembled with the hand grip assembly 12. The aperture 108 tapers from its inner, lower end towards its rear open end in a converging manner so as to provide easier ingress at the front end (cord end) of the ~ OS7 Canadian Case 2148 aperture 108 to the cavity within the hand grip 120 At the front end of the aperture 108, there is also an absence of internal ribs or ribbing to again conveniently provide easier ingress to the interior of the hand grip 12 in the area of cord insertionO To this endD larger aperture 108 also includes a semi-circular cutout 114 at its front end that provides for passage of strain relief 14 and its cord 18 into the hand grip 120 Forwardly of the larger aperture 108 D the lower hand grip piece (Figure 4) is formed with a screw-receiving aperture 116 extending through the shell of this piece for reception of the aforementioned threaded screw 86. Again~ forwardly of this aperture r are a series of short, integral transverse ribs 118 120~ 122 around and between which the electrical cord 18 is : wound to provide a tortuous path for strain relief purposes prior to the cord 18 passing downwardly through the handle 10.
Strengthening rib member 123, on upper hand grip piece 22 and strengthening rib member 125, on lower hand grip piece 24, formed at the forward inner ends of these hand grip pieces provide strength and support in this area to rigidify the overall structural integrity of hand grip 12 at its forward endO A lead-in rib 127 on the hand grip piece 24 provides a guided pathway for the wires extending downwardly in the handle.
The structure of the hand grip 12 has now been completely described relative to the hand grip pieces 22, 24 and their relationship to each other. In order to insure that these two pieces are held tightly together once mounted with each other, an ultrasonic welding process is utilized which welds these pieces along horizontal flanges 38l 40 and vertical flanges 42, 44. The interengaging pin 62 and boss 64 are also ultra-sonically fastened together in this same manner as well as the stepped ribs 70, 76 and 72, 78.
~ 57 Canadian Case 2148 Switch-retaining member 1].0 is of generally horizontal extent and includes a semi-circular cutout 124 at its forward, inner end and disposed, when switch-retaining member 110 is assembled with hand grip 12, to be in confronting relationship with semi-circular cutout 114 in lower hand grip piece 24. The remainder of the external periphery of the general horizontal extent of switch-retaining member 110 conforms to the roughly truncated aperture 108, while its depth is of such dimensioning as to place it flush with the general external periphery of the hand grip 12 when the switch-retaining member 110 rests at the faces 112 of the lower hand grip portion 24.
The end of switch-retaining member 110 r opposite semi-circular cutout 124, includes an integral r inwardly extending post 126 having a one-way cam latching shoulder 128 formed on its inner end, with the cam of wedge shape and this shape being disposed on the rearward, upper slde of the latching post.
Upon insertion of the switch-retaining member 110 into truncated aperture 1080 the cam latching shoulder 128 is caused to slide along rib 74 of the lower hand grip portion, between stepped ribs 76, 78, until the cam latching shoulder 128 latches over the radially inward termination of rib 74.
In order to properly interengage strain relief 140 lower hand grip piece 24 and switch-retaining member llOo the switch-retaining member 110 and strain relief 14 must be inserted within truncated aperture 108 somewhat simultaneously to make these elements captive with the lower hand grip piece and hand grip assembly 12. To this end, a circular r peripheral groove 130 is formed in the strain relief 14 and is bordered axially outwardly relative to the strain relief groove 130 by a cap flange 132 and with a disc portion 134 axially inwardly of this same groove. The diameter of the internal circumference of groove 130 is substantially the size of the circular aperture ~ 57 Canadian Case 2148 formed by confronting semi~circular cutouts 114, 124D while its thickness or depth is sufficient to be slightly more than the combined thicknesses of the wall of the lower hand grip piece 24 and the wall thickness of the handle 10.
Assembly of the strain relief 14 with the hand grip assembly 12 and switch-retaining member 110 occurs in the following manner: the groove 130 of the strain relief is nested in semi-circular cutout 114 of the lower hand grip piece 24;
the semi-circular cutout 124 of the switch retaining member 110 is nested in the opposite side of this groove and the post 126 is inserted through truncated aperture 108 SO that cam latching shoulder 128 of it may ride along the forward side of rib 74.
: The switch-retaining member 110 is then pushed home to its fully inserted position causing the cam latching shoulder 128 to reach the aforementioned latching position. A removable cap 129 is then mounted on switch 16 to aid in operation manip-ulation.
Because of the inherent resiliency of the strain relief 14 and the fact that the switch retaining member 110 is tightly positioned between it and the rib 74 and since the :~
latching post 126 also has some inherent resiliency, the switch retaining member 110 is, in effect, jammingly or wedgingly maintained in its assembled position with the post 126 tending to urge the switch retaining member 110 axially towards the strain relief 14. This helps maintain it in engaged position with semi-circular cutout 114 thereby effectively mating it with the hand grip 12 t proper.
The handle-hand grip assembly configuration is completed by insertion of an inner end 136 of hand grip assembly 12 and attached parts into the upper open end of handle 10, this inner end being of slightly smaller dimension than the external exposed hand grip portion to provide a flush continuation llO~S7 Canadian Case 2148 between the handle and exposed hand grip. A well 138 in the hand grip assembly 12 slides over inner terminations of the cord hook 20 to aid in the aforesaid insertion.
A semi-circular cutout 140 is also provided in this end of the handle 10, the periphery of which mates in the circular groove 130 in the strain relief 14 with the handle 10 also encompassing forwardmost portions 144D 144 of switch retaining member 110. The screw 86 is then passed through a circular aperture 142 in handle 10, the screw receiving bore 116 in lower hand grip part 24 and is threadedly received in boss 84 in upper hand grip part 22.
The assembly of the handle 10 to the hand grip assembly 12 is, thus, completed with the screw 86 preventing axial separation between themO Since the handle 10, in this position, overlaps the portions 144, 144 of switch retaining member 110 and the hand grip assembly 12, it prevents radial outward movement of any of them at their forward ends. Thus, the hand grip assembly 12 and the switch retain1ng member 110 are held in their jammed position by the handle~ both, because of fixed axial positioning and because of overlapping radial contact.
Only a single screw or the like is thereby required for the completed assemblage of this invention7 simplifying construction, simplifying assembly, providing a stylized molded hand grip andO at the same time~ limiting stress concentration points occasioned by the use of a multiplicity of conventional fasteners.
It should~ therefore, be obvious that the objects of the invention have been complied with by the specific embodiment 30 described. It should also be obvious that many deviations and 11~2~S7 Canadian Case 2148 variations of the disclosed invention could be made by one skilled in the art which would still come within the scope and purview of the descriptionO
Although the use of switch retaining members such as plates and the like that are screwedly fastened to the handle or hand grip, e.g., of a floor care appliance are old and well known, the same being generally used in conjunction with an electric cord strain relief mounted closely adjacent tc the switch, heretofore the mounting of the strain relief and switch retaining plate has generally been relatively independent. ~o advantageO then~ has been taken of the fact that both a strain relief and a switch retaining plate are required for cleaner operation so that a close cooperative mounting of these elements would tend to reduce the number of parts required for the total assembly~ probably simplify manufacturing assembly and lend itself to a cleanD effective overall design for the upper end of the propelling handle for a floor care appliance.
Accordingly, it is an object of this invention to provide a strain relief-switch retention member assemblage where close dependence of one on the other tends to simplify overall design requirements.
The invention may be characterized as a switch retaining plate~ switch, first means for abutment and strain relief including: the switch retaining plate having a generally planar expanse~ an aperture extending through the generally planar expanse, a switch extending the aperture~ a second means for abutment on the switch retaining plate projecting generally transverse to the generally planar expanse, one of the first means for abutment and said second means for abutment being resilient~ bendable and deformable so that~ upon deformation ~' ~ S7 Canadi2n Case 2148 of one of said first and second means for abutment, the switch retaining plate is resiliently urged against the strain relief.
Reference may now be had to the accompanying drawings for a better understanding of the inventionl both as to its organization and function, with the illustration being only exemplary, and in which:
Figure 1 is a perspective view of a floor care appliance handle utilizing the instant invention;
Figure 2 is a broken side elevational view of the handle and included hand grip, with certain parts shown in phantom;
Figure 3 is a bottom plan view of the structure shown in Figure l;
Figure 4 is a top plan view of the lower hand grip half, switch, wires and strain relief;
Figure 5 is a bottom plan view of the upper half of the hand grip; and Figure 6 is a bottom plan view of the lower hand grip piece.
As is shown most clearly in Figures 1 and 2, a handle 10 for an electrical appliance (not shown) such as a floor care machine~ is shown which includes a hand grip assembly 12, a strain relief 14 and a switch 16 for closing the circuit for the floor care appliance, the supply of current being provided by an electrical cord 18 including a plug (not shown) for securement to a wall socket (not shown).
The handle 10 is generally rectangular in cross section to provide a modern appearance and provides a convenient conveying means for conventionally leading the electrical cord 18 down-wardly within the handle 10. A bag hook 20 is provided on handle 10 for support of cord 18 when the same is not in use.
The lower portion of the handle 10 may~ of course, be attached, 11~2~57 Canadian Case 2148 conventionallyO to a bail or the like (not shown) of a vacuum cleanerO Such a connection, both electrical and mechanical, may take many forms and is not further described here since the same is well known and clearly taught in the prior art.
Turning to the more inventive aspects of the instant ApplicationO it can be seen that the hand grip 12 is comprised of upper and lower mating pieces 22 and 24r respectively, of generally semi-tubular configuration~ These two hand grip pieces are mounted in abutting relationship with their open sides 26 and 28, respectively, in confronting relationship so that a closed shaped configuration is obtained. This shape includes a lowerO inner portion 30 of the hand grip of rectan-gular cross section in configuration~ and intermediate portion 32 of necked down configuration and an upper, outer portion 34, shaped conveniently for the grasp of the user of the floor care appliance and being roughly circular in its cross section and including a bulbous portion 36 adjacent necked down portion 32.
Hand grip pieces 22 and 24 can best be seen in their unassembled state in Figures 4 and 5 and include generally horizontal flange portions 38, 40 and vertical flange portions 42, 440 respectively7 with vertical flange portion 42 formed on the inner periphery of the shell form of upper hand grip piece 22 and vertical flange portion 44 formed on lower hand grip piece 24 at its shell outer periphery. By this arrangement, when the hand grip pieces 22 and 24 are in assembled position, a lap joint is formed at the mating juncture of the two pieces to provide a reasonably rigid total assembly.
Upper hand grip piece 22 also includes a series of transversely extending ribs 46, 48, 50 and 52 and a longitudinal rib 53 which merge smoothly into the shell form of lower hand grip piece 22. These ribs serve to strengthen hand grip piece 22. Hand grip piece 24 also includes a series of transversely ~102~S7 Canadian Case 2148 extendingO slightly angled strengthening ribs 54, 56, 58 and 60 and longitudinal ribs 59, 61. These ribs only strengthen their individual hand grip pieces and do not serve as abutting members upon hand grip assembly 12, as they terminate short of each other so as to be spaced from each other when in assembled conditionO
At its upper, outer end, hand grip assembly 12 includes an attaching means maintaining the two hand grip pieces together at their upper distal endsO This attaching means takes the form of an internal pin 62, integral with and extending angularly inwardly from upper hand grip piece 22 and a hollow boss 64 also extending angularly inwardly but integral with lower hand grip piece 240 A bore 66, formed in boss 64, is dimensioned so as to receive pin 62 in a relatively tight manner so as to fix the two hand grip parts together.
Forwardly of transverse ribs 460 48, 50 and 52 on upper hand grip piece 22 is another transverse rib 68 that is an intermittent rib open in the middle, but it is an integral portion of a pair of stepped ribs 70, 72 extending generally aligned and axially of the hand grip piece 22. In a similar manner~ lower hand grip piece 24 includes an additional trans-verse, continuous full rib 740 joined to a pair of aligned axially extending stepped ribs 76, 78. These ribs abut with their counterparts on upper hand grip piece 22 when the hand grip 12 is in assembled condition, because these ribs are flush with the inner termination of vertical flange 44 on hand grip piece 24, while ribs 68~ 70 and 72 are flush with the inner termination of horizontal flange 38 of upper hand grip piece 220 This tortuous rib configuration and abutting relationship provides additional strength to the hand grip assembly 12 at the location of switch 160 ~ Q5 7 Canadian Case 2148 The remainder of the formation of upper hand grip piece 22 includes a pair of inner longitudinally extending ribs 80 and 820 disposed between the widest separation of the stepped ribs 70 and 720 to provide an additional strengthening in the area of the handle adjacent the strain relief 14. Forwardly of these two ribs is an inwardly extending threaded boss 84 that receives a screw 86 (Figure 2) to maintain the lower, inner end of hand grip piece 22 in assembled conditionO A
mediately disposed, inwardly extending rib 88 may serve as an inward limiting~ abutting means for switch 16 and does electrically isolate (Figure 2) the conductor retaining contacts 90~ 92 from each other upon final assemblyO
Lower hand grip piece 24 (Figure 6) is completed in form by a series of generally horizontal aligned tabs 94D 94, 96, 96 (Figure 6)D integral with the stepped ribs and extending outwardly thereof to provide a positive limiting means for inward movement of a switch body 98 of switch 16. These tabs are horizontally stepped at 100D 100 and 102, 102 to provide an inner offset planar surface 104 on which the inner of rear end of the switch body 98 rests, thus also limiting axial move-ment of the switch body relative to the hand grip 12.
As can also be seen in Figure 6, a generally rectan-gular bottom opening aperture 106:is provided in lower hand grip portion 24 for insertion of the switch 160 A slightly larger aperture 108 of generally truncated shape and extending through only the shell of the lower hand grip portion 24 thereby provides a mount for a switch-retaining member 110, the same resting on generally planar faces 112, 112 formed on the shell of this hand grip piece when assembled with the hand grip assembly 12. The aperture 108 tapers from its inner, lower end towards its rear open end in a converging manner so as to provide easier ingress at the front end (cord end) of the ~ OS7 Canadian Case 2148 aperture 108 to the cavity within the hand grip 120 At the front end of the aperture 108, there is also an absence of internal ribs or ribbing to again conveniently provide easier ingress to the interior of the hand grip 12 in the area of cord insertionO To this endD larger aperture 108 also includes a semi-circular cutout 114 at its front end that provides for passage of strain relief 14 and its cord 18 into the hand grip 120 Forwardly of the larger aperture 108 D the lower hand grip piece (Figure 4) is formed with a screw-receiving aperture 116 extending through the shell of this piece for reception of the aforementioned threaded screw 86. Again~ forwardly of this aperture r are a series of short, integral transverse ribs 118 120~ 122 around and between which the electrical cord 18 is : wound to provide a tortuous path for strain relief purposes prior to the cord 18 passing downwardly through the handle 10.
Strengthening rib member 123, on upper hand grip piece 22 and strengthening rib member 125, on lower hand grip piece 24, formed at the forward inner ends of these hand grip pieces provide strength and support in this area to rigidify the overall structural integrity of hand grip 12 at its forward endO A lead-in rib 127 on the hand grip piece 24 provides a guided pathway for the wires extending downwardly in the handle.
The structure of the hand grip 12 has now been completely described relative to the hand grip pieces 22, 24 and their relationship to each other. In order to insure that these two pieces are held tightly together once mounted with each other, an ultrasonic welding process is utilized which welds these pieces along horizontal flanges 38l 40 and vertical flanges 42, 44. The interengaging pin 62 and boss 64 are also ultra-sonically fastened together in this same manner as well as the stepped ribs 70, 76 and 72, 78.
~ 57 Canadian Case 2148 Switch-retaining member 1].0 is of generally horizontal extent and includes a semi-circular cutout 124 at its forward, inner end and disposed, when switch-retaining member 110 is assembled with hand grip 12, to be in confronting relationship with semi-circular cutout 114 in lower hand grip piece 24. The remainder of the external periphery of the general horizontal extent of switch-retaining member 110 conforms to the roughly truncated aperture 108, while its depth is of such dimensioning as to place it flush with the general external periphery of the hand grip 12 when the switch-retaining member 110 rests at the faces 112 of the lower hand grip portion 24.
The end of switch-retaining member 110 r opposite semi-circular cutout 124, includes an integral r inwardly extending post 126 having a one-way cam latching shoulder 128 formed on its inner end, with the cam of wedge shape and this shape being disposed on the rearward, upper slde of the latching post.
Upon insertion of the switch-retaining member 110 into truncated aperture 1080 the cam latching shoulder 128 is caused to slide along rib 74 of the lower hand grip portion, between stepped ribs 76, 78, until the cam latching shoulder 128 latches over the radially inward termination of rib 74.
In order to properly interengage strain relief 140 lower hand grip piece 24 and switch-retaining member llOo the switch-retaining member 110 and strain relief 14 must be inserted within truncated aperture 108 somewhat simultaneously to make these elements captive with the lower hand grip piece and hand grip assembly 12. To this end, a circular r peripheral groove 130 is formed in the strain relief 14 and is bordered axially outwardly relative to the strain relief groove 130 by a cap flange 132 and with a disc portion 134 axially inwardly of this same groove. The diameter of the internal circumference of groove 130 is substantially the size of the circular aperture ~ 57 Canadian Case 2148 formed by confronting semi~circular cutouts 114, 124D while its thickness or depth is sufficient to be slightly more than the combined thicknesses of the wall of the lower hand grip piece 24 and the wall thickness of the handle 10.
Assembly of the strain relief 14 with the hand grip assembly 12 and switch-retaining member 110 occurs in the following manner: the groove 130 of the strain relief is nested in semi-circular cutout 114 of the lower hand grip piece 24;
the semi-circular cutout 124 of the switch retaining member 110 is nested in the opposite side of this groove and the post 126 is inserted through truncated aperture 108 SO that cam latching shoulder 128 of it may ride along the forward side of rib 74.
: The switch-retaining member 110 is then pushed home to its fully inserted position causing the cam latching shoulder 128 to reach the aforementioned latching position. A removable cap 129 is then mounted on switch 16 to aid in operation manip-ulation.
Because of the inherent resiliency of the strain relief 14 and the fact that the switch retaining member 110 is tightly positioned between it and the rib 74 and since the :~
latching post 126 also has some inherent resiliency, the switch retaining member 110 is, in effect, jammingly or wedgingly maintained in its assembled position with the post 126 tending to urge the switch retaining member 110 axially towards the strain relief 14. This helps maintain it in engaged position with semi-circular cutout 114 thereby effectively mating it with the hand grip 12 t proper.
The handle-hand grip assembly configuration is completed by insertion of an inner end 136 of hand grip assembly 12 and attached parts into the upper open end of handle 10, this inner end being of slightly smaller dimension than the external exposed hand grip portion to provide a flush continuation llO~S7 Canadian Case 2148 between the handle and exposed hand grip. A well 138 in the hand grip assembly 12 slides over inner terminations of the cord hook 20 to aid in the aforesaid insertion.
A semi-circular cutout 140 is also provided in this end of the handle 10, the periphery of which mates in the circular groove 130 in the strain relief 14 with the handle 10 also encompassing forwardmost portions 144D 144 of switch retaining member 110. The screw 86 is then passed through a circular aperture 142 in handle 10, the screw receiving bore 116 in lower hand grip part 24 and is threadedly received in boss 84 in upper hand grip part 22.
The assembly of the handle 10 to the hand grip assembly 12 is, thus, completed with the screw 86 preventing axial separation between themO Since the handle 10, in this position, overlaps the portions 144, 144 of switch retaining member 110 and the hand grip assembly 12, it prevents radial outward movement of any of them at their forward ends. Thus, the hand grip assembly 12 and the switch retain1ng member 110 are held in their jammed position by the handle~ both, because of fixed axial positioning and because of overlapping radial contact.
Only a single screw or the like is thereby required for the completed assemblage of this invention7 simplifying construction, simplifying assembly, providing a stylized molded hand grip andO at the same time~ limiting stress concentration points occasioned by the use of a multiplicity of conventional fasteners.
It should~ therefore, be obvious that the objects of the invention have been complied with by the specific embodiment 30 described. It should also be obvious that many deviations and 11~2~S7 Canadian Case 2148 variations of the disclosed invention could be made by one skilled in the art which would still come within the scope and purview of the descriptionO
Claims (7)
1. A switch retaining plate, switch, first means for abutment and strain relief combination including;
a) said switch retaining plate having a generally planar expanse, b) an aperture extending through said generally planar expanse, c) a switch extending through said aperture, d) a second means for abutment on said switch retaining plate projecting generally transverse to said generally planar expanse, e) one of said first means for abutment and said second means for abutment being resilient, bendable and deformable so that, upon deformation of one of said first and said second means for abutment, said switch retaining plate is resiliently urged against said strain relief.
a) said switch retaining plate having a generally planar expanse, b) an aperture extending through said generally planar expanse, c) a switch extending through said aperture, d) a second means for abutment on said switch retaining plate projecting generally transverse to said generally planar expanse, e) one of said first means for abutment and said second means for abutment being resilient, bendable and deformable so that, upon deformation of one of said first and said second means for abutment, said switch retaining plate is resiliently urged against said strain relief.
2. The assembly of Claim 1 wherein;
a) said switch retaining plate includes a portion having a cutout, b) said cutout portion being resiliently urged against said strain relief.
a) said switch retaining plate includes a portion having a cutout, b) said cutout portion being resiliently urged against said strain relief.
3. The assembly of Claim 1 wherein;
a) a said first means for abutment is fixed relative to a handle.
a) a said first means for abutment is fixed relative to a handle.
4. The assembly of Claim 1 wherein;
a) a handle is provided having a cutout, b) said switch retaining plate includes a cutout, c) said cutouts confront each other and capture said strain relief therebetween.
a) a handle is provided having a cutout, b) said switch retaining plate includes a cutout, c) said cutouts confront each other and capture said strain relief therebetween.
5. The assembly of Claim 4 wherein;
a) a tubular handle part is included, b) said tubular handle part telescoping over said handle.
a) a tubular handle part is included, b) said tubular handle part telescoping over said handle.
6. The assembly of Claim 5 wherein;
a) a means for attaching said tubular handle part to said handle maintains said tubular handle part to said handle.
a) a means for attaching said tubular handle part to said handle maintains said tubular handle part to said handle.
7. The assembly of Claim 1 wherein;
a) said second means for abutment comprises a post, b) said post including a latching shoulder, c) said shoulder engaging over said first abutment means to limit outward movement of said switch retaining plate.
a) said second means for abutment comprises a post, b) said post including a latching shoulder, c) said shoulder engaging over said first abutment means to limit outward movement of said switch retaining plate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US766,894 | 1977-02-09 | ||
| US05/766,894 US4133971A (en) | 1977-02-09 | 1977-02-09 | Hand grip mounted switch and strain relief |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1102057A true CA1102057A (en) | 1981-06-02 |
Family
ID=25077854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA294,750A Expired CA1102057A (en) | 1977-02-09 | 1978-01-11 | Hand grip mounted switch and strain relief |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4133971A (en) |
| JP (1) | JPS5399478A (en) |
| AU (1) | AU515363B2 (en) |
| CA (1) | CA1102057A (en) |
| FR (1) | FR2380012A1 (en) |
| GB (1) | GB1591774A (en) |
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| US4516289A (en) * | 1984-04-30 | 1985-05-14 | The Singer Company | Handle construction for floor care appliance |
| US4929199A (en) * | 1988-07-13 | 1990-05-29 | Ferret | Battery cable clip and cable connection |
| US5318158A (en) * | 1992-04-09 | 1994-06-07 | Mcculloch Corporation | Cord retainer for electric power cord |
| IT1278617B1 (en) * | 1994-03-17 | 1997-11-24 | Gisowatt S P A Ind Elettrodome | VERTICAL EXTRACTOR, SO-CALLED BROOM, WITH TOTAL FAIRING WITHIN WHICH THE CONTROL ORGANS ARE HARMONICALLY DISTRIBUTED AND/OR ACCESSIBLE |
| US5678272A (en) * | 1995-10-20 | 1997-10-21 | Waxing Corporation Of America, Inc. | Power tool having a quick release system for attaching a working element |
| US5595532A (en) * | 1995-10-20 | 1997-01-21 | Waxing Corporation Of America, Inc. | Electrically-powered polisher |
| US6290587B1 (en) | 1995-10-20 | 2001-09-18 | Wilton Tool Company, Llc | Electrically-powered polisher |
| US5642008A (en) * | 1995-10-20 | 1997-06-24 | Waxing Corporation Of America, Inc. | Power tool motor assembly |
| USD384939S (en) * | 1996-04-10 | 1997-10-14 | Pride Health Care, Inc. | Chair control |
| US6307737B1 (en) * | 1998-11-04 | 2001-10-23 | Funai Electric Co., Ltd. | Cord settler |
| US7765640B2 (en) * | 2003-04-09 | 2010-08-03 | Oreck Holdings, Llc | Vacuum cleaner cord management system |
| EP2452786A1 (en) * | 2006-05-31 | 2012-05-16 | Ingersoll Rand Company | Structural support for power tool housings |
| US7896103B2 (en) * | 2008-02-04 | 2011-03-01 | Ingersoll Rand Company | Power tool housing support structures |
| US10258442B2 (en) | 2009-03-20 | 2019-04-16 | Water Pik, Inc. | Oral irrigator appliance with radiant energy delivery for bactericidal effect |
| CN102736701A (en) * | 2011-04-08 | 2012-10-17 | 鸿富锦精密工业（深圳）有限公司 | Power module |
| EP2523265B1 (en) * | 2011-05-12 | 2014-07-16 | Delphi Technologies, Inc. | Strain relief/bend prevention device |
| US9642677B2 (en) | 2013-03-14 | 2017-05-09 | Water Pik, Inc. | Oral irrigator with massage mode |
| US9980793B2 (en) | 2013-11-27 | 2018-05-29 | Water Pik, Inc. | Oral hygiene system |
| KR101824377B1 (en) | 2013-11-27 | 2018-01-31 | 워어터 피이크, 인코포레이티드 | Oral irrigator with slide pause switch |
| CN203693808U (en) * | 2013-12-12 | 2014-07-09 | 洁碧有限公司 | Dental water sprayer |
| JP5953619B2 (en) | 2014-09-30 | 2016-07-20 | 秀之 春山 | Solution transfer cooling system |
| CN205586102U (en) | 2014-12-01 | 2016-09-21 | 洁碧有限公司 | Waterproof wireless oral cavity flusher |
| EP3407828B1 (en) | 2016-01-25 | 2020-12-23 | Water Pik, Inc. | Reduced form factor oral irrigator |
| USD809650S1 (en) | 2016-02-22 | 2018-02-06 | Water Pik, Inc. | Oral irrigator |
| CN105662295A (en) * | 2016-03-23 | 2016-06-15 | 苏州高新区镇湖五金厂 | Handle for electric mop |
| USD839409S1 (en) | 2016-12-15 | 2019-01-29 | Water Pik, Inc. | Oral irrigator unit |
| USD834180S1 (en) | 2016-12-15 | 2018-11-20 | Water Pik, Inc. | Oral irrigator base |
| KR102576326B1 (en) | 2016-12-15 | 2023-09-08 | 워어터 피이크, 인코포레이티드 | Oral irrigator with magnetic attachment |
| USD829886S1 (en) | 2016-12-15 | 2018-10-02 | Water Pik, Inc. | Oral irrigator base |
| USD833600S1 (en) | 2016-12-15 | 2018-11-13 | Water Pik, Inc. | Oral irrigator reservoir |
| USD867579S1 (en) | 2016-12-15 | 2019-11-19 | Water Pik, Inc. | Oral irrigator unit |
| USD832419S1 (en) | 2016-12-15 | 2018-10-30 | Water Pik, Inc. | Oral irrigator unit |
| USD832420S1 (en) | 2016-12-15 | 2018-10-30 | Water Pik, Inc. | Oral irrigator base |
| CN114642510A (en) | 2016-12-15 | 2022-06-21 | 洁碧有限公司 | Pause valve and swivel assembly for oral irrigator handle |
| USD833000S1 (en) | 2016-12-15 | 2018-11-06 | Water Pik, Inc. | Oral irrigator unit |
| USD825741S1 (en) | 2016-12-15 | 2018-08-14 | Water Pik, Inc. | Oral irrigator handle |
| USD840023S1 (en) | 2016-12-15 | 2019-02-05 | Water Pik, Inc. | Oral irrigator reservoir |
| USD832418S1 (en) | 2016-12-15 | 2018-10-30 | Water Pik, Inc. | Oral irrigator base |
| USD833602S1 (en) | 2017-02-06 | 2018-11-13 | Water Pik, Inc. | Oral irrigator base |
| USD829887S1 (en) | 2017-02-06 | 2018-10-02 | Water Pik, Inc. | Oral irrigator reservoir |
| USD833601S1 (en) | 2017-02-06 | 2018-11-13 | Water Pik, Inc. | Oral irrigator |
| USD868243S1 (en) | 2018-03-16 | 2019-11-26 | Water Pik, Inc. | Oral irrigator tip |
| USD877324S1 (en) | 2018-05-17 | 2020-03-03 | Water Pik, Inc. | Oral irrigator handle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2712119A (en) * | 1955-06-28 | Straw relief for electric cord | ||
| US1932126A (en) * | 1933-10-24 | Mounting for tubular handles | ||
| US2183310A (en) * | 1937-03-26 | 1939-12-12 | Apex Electrical Mfg Co | Operating handle for electrically driven tools |
| US2171331A (en) * | 1937-07-01 | 1939-08-29 | Gen Electric | Electric cord assembly for vacuum cleaners or the like |
| US2218161A (en) * | 1938-12-14 | 1940-10-15 | Hoover Co | Suction cleaner |
| US2662110A (en) * | 1950-02-21 | 1953-12-08 | Art Specialty Co | Lamp housing with grommeted lead-in holding means |
-
1977
- 1977-02-09 US US05/766,894 patent/US4133971A/en not_active Expired - Lifetime
-
1978
- 1978-01-11 CA CA294,750A patent/CA1102057A/en not_active Expired
- 1978-01-27 JP JP817178A patent/JPS5399478A/en active Pending
- 1978-02-03 AU AU33000/78A patent/AU515363B2/en not_active Expired
- 1978-02-06 GB GB4681/78A patent/GB1591774A/en not_active Expired
- 1978-02-07 FR FR7803355A patent/FR2380012A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2380012A1 (en) | 1978-09-08 |
| AU3300078A (en) | 1979-08-09 |
| FR2380012B3 (en) | 1980-05-16 |
| US4133971A (en) | 1979-01-09 |
| GB1591774A (en) | 1981-06-24 |
| AU515363B2 (en) | 1981-04-02 |
| JPS5399478A (en) | 1978-08-30 |
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Legal Events
| Date | Code | Title | Description |
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| MKEX | Expiry |