EP0056634A2 - Switch connection adapter - Google Patents
Switch connection adapter Download PDFInfo
- Publication number
- EP0056634A2 EP0056634A2 EP82100267A EP82100267A EP0056634A2 EP 0056634 A2 EP0056634 A2 EP 0056634A2 EP 82100267 A EP82100267 A EP 82100267A EP 82100267 A EP82100267 A EP 82100267A EP 0056634 A2 EP0056634 A2 EP 0056634A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- control
- wire
- wire trap
- switch
- insulator 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.)
- Granted
Links
Images
Classifications
-
- 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
- H01H9/08—Arrangements to facilitate replacement of a switch, e.g. cartridge housing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R29/00—Coupling parts for selective co-operation with a counterpart in different ways to establish different circuits, e.g. for voltage selection, for series-parallel selection, programmable connectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/50—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw
Definitions
- the invention resides in the combination, construction, arrangement and disposition of the various component parts and elements incorporated in a connection adapter and portable electric tools incorporating the same in accordance with the principles of this invention.
- the present invention will be better understood and objects and important features other than those specifically enumerated above will become apparent when consideration is given to the following details and description which, when taken in conjunction with the annexed drawing describes, discloses, illustrates and shows a preferred embodiment or modification of the present invention and what is presently considered and believed to be the best mode of practicing the principles thereof.
- Other embodiments or modifications may be suggested to those having the benefit of the teachings herein, and such other embodiments or modifications are intended to be reserved, especially as they fall within the scope and spirit of the subjoined claims.
Abstract
Description
- This invention relates to portable electric tools and, more particularly, to switch connector adapters therefore.
- A wire trap connection system has become popular for trigger speed controls and switches in portable electric tools such as drills, sabre saws, and the like. In such a system, a switch or trigger speed control module is provided with a housing having a plurality of openings into which tinned stranded wire or solid wire ends may be inserted to connect the switch or speed control module. Within the opening is a spring wire trap which grasps the wire end while making an electrical connection thereto.
- While such wire trap systems are compatable with Underwriters Laboratory (UL) and Canadian Standards Association (CSA) requirements, these systems do not comply with the standards of some other nations. In Europe, for example, it is generally necessary that the cord be easily replaceable by the customer. While some wire trap systems do enable easy replacement by the customer, some require special tools and some are not amenable to easy customer rewiring.
- The wiring system that is most commonly recognized as being easily rewired is the use of screws to clamp each wire, thereby allowing the changes to be made by the customer'using just a screwdriver.
- Bearing in mind the foregoing, it is a primary object of the present invention to provide a connection adapter to provide screw terminals for a switch or trigger speed controller incorporating a wire trap connection system.
- Another primary object of the present invention, in addition to the foregoing object, is the provision of such an adapter which is economical and allows economical wire trap controls to be utilized for tools to be sold in nations requiring easy serviceability and rewiring by the customer.
- Still another primary object of the present invention, in addition to each of the foregoing objects, is the provision of a simple, inexpensive adapter enabling the provision of screw clamp terminals on switches and trigger speed controls utilizing wire trap connection.
- The invention resides in the combination, construction, arrangement and disposition of the various component parts and elements incorporated in a connection adapter and portable electric tools incorporating the same in accordance with the principles of this invention. The present invention will be better understood and objects and important features other than those specifically enumerated above will become apparent when consideration is given to the following details and description which, when taken in conjunction with the annexed drawing describes, discloses, illustrates and shows a preferred embodiment or modification of the present invention and what is presently considered and believed to be the best mode of practicing the principles thereof. Other embodiments or modifications may be suggested to those having the benefit of the teachings herein, and such other embodiments or modifications are intended to be reserved, especially as they fall within the scope and spirit of the subjoined claims.
- A connection adapter module is provided for a wire trap switch, trigger speed control, or the like that plugs into the wire trap system and provides screw clamp connections to the control for a portable electric tool such as a drill, sabre saw, or the like, enabling the tool to be rewired or the control replaced by a customer with a standard screwdriver. The connection adapter module comprises an insulator body carrying a plurality of connector elements which can be "piggy-backed" on the control. The module includes connector elements generally comprising inserts in the insulator body including a barrel portion having a screw threaded through the wall thereof for receiving and clamping a wire therewithin and a thin wire-like projection or pin portion extending longitudinally therefrom projecting out of the insulator body to be engaged within the switch or control wire trap.
- While the specification concludes with claims particularly pointing out and distinctly claiming the subject matter which is regarded as forming the present invention, it is believed the invention will be better understood from the following detailed description when taken in conjunction with the annexed drawing which discloses, illustrates and shows a preferred embodiment or modification of the present invention and what is presently considered and believed to be the best mode of practicing the principles thereof and wherein:
- FIG. 1 illustrates a representative portable electric tool incorporating the present invention;
- FIG. 2 is an exploded perspective view of the trigger switch module and connection adapter block or module of the present invention illustrating how a trigger control utilizing a wire trap system can be converted to screw terminal connection;
- FIG. 3 is an exploded perspective illustration of the connection adapter module of the present invention; and
- FIG. 4 is an enlarged partial perspective illustration partially broken away, illustrating the interconnection of the adapter with a control.
- With reference now to the drawing, there is shown and illustrated an appliance or portable electric tool, such as a portable electric drill designated generally by the
reference character 10 which incorporates atrigger control 12 which may be a trigger switch or a trigger speed control and which generally comprises atrigger portion 14 carried on the end of aslide portion 16 which is telescopable inwardly and outwardly of a housing 18.- Thehousing 18 includes acover plate 20 provided with a plurality ofapertures 22 providing access to a wire trap connection system within thehousing 18. Mounted with theslide 16 within thehousing 18 is at least one contact which cooperates with other components within thehousing 18 to control electric circuits leading to wire trap contact members orconductors housing 18 inwardly of each of theholes 22. The wire trap system and trigger switch controls utilizing these systems are well known and are commercially available from a number of switch and control manufacturers. In the wire trap system detailed in FIG. 4, if a wire end, having been previously stripped, and preferably tinned if the wire is stranded, is inserted through theaperture 22 and between theelements contact members contact members - In the adapter of the present invention there is provided' an
adapter body 28 which carries, in general alignment with each of theapertures 22, an insert comprising aconnector body 30 of generally barrel or cylindrical shape which has extending generally longitudinally outwardly thereof apin portion 32. The generally cylindrical barrel shapedportions 30 may be provided with alignment means, such as a flatted or slabbedsurface 34 to aid in their assembly with theconnector body 28. Thepin portions 32 may be provided withconical points 36 to aid in the insertion thereof into the wire trap system between thecontact members cylindrical barrel portions 30 are provided with a generallyaxial bore 38 adapted to receive therewithin thewiring 40 of thetool 10 transverse threadedholes 42 may also be provided communicating with the central oraxial bore 38 to receiveclamping screws 44 for clamping thewiring 40 of thetool 10 within the generallycylindrical barrel portions 30. - To receive the generally
cylindrical barrel portions 30, thehousing 18 may be provided with a plurality of generallycylindrical bores 46 withinbosses 48, the generallycylindrical bores 46 being provided withflatted portions 50 for mating with the flatted portion or slabbedsides 34 of the generallycylindrical barrel portions 30 so as to provide alignment therebetween and preclude relative rotation.Screw slots 52 may also be provided in thehousing 18 to provide clearance for passage of the shanks of theclamping screws 44 therethrough. The generallycylindrical barrel portions 30 may be assembled into the generallycylindrical bores 46 and anapertured cover plate 54 may be assembled with thebody 28 with thepin portions 32 extending through theapertures 56 thereof and thecover plate 54 secured to thebody 28 in any convenient manner such as ultrsonic bonding, adhesive bonding, or the like. - The generally
cylindrical barrel portions 30 together with theelongated pin portion 32 is generally referred to as an insert, designated generally by thereference character 58 and, as should be readily apparent, is fabricated of electrically conductive material. Thebody 28 andcover plate 54 should be fabricated of electrically non-conductive or insulating material. The assembled adapter, including thebody 28, thecover plate 54, theinsert 58, and theclamping screws 44 define an adapter or module generally designated by thereference character 60 which contains the generallycylindrical portion 30 of theinserts 58 within thebody 28 and has thepin portions 32 of theinserts 58 extending outwardly thereof through thecover plate 54 and positioned so as to be alignable with theapertures 22 of thetrigger control 12. Theadapter 60 can therefore be plugged into thecontrol 12, thereby effectively and inexpensively converting thecontrol 12 from a wire trap system device to one having provision for screw clamp connection to wiring 40 thereto, theadapter body 28 being also provided withapertures 62 in alignment with the central apertures orbores 38 of the generallycylindrical barrel portions 30 of theinserts 58 enabling, as shown, thewiring 40 of thetool 10 to be inserted therethrough and clamped within theinserts 58. Theinserts 58 provide an electrical path between thewires 40 and the wiretrap system conductors trigger control 12. If replacement of thewiring 40 is required, only a screwdriver is needed, to loosen and re-tighten thewire clamping screws 44. - While the invention has been described, disclosed, illustrated and shown in terms of a preferred embodiment or modification which it has assumed in practice, it is to be expressely understood that this has been done for purposes of example only and that the invention is not intended to be deemed limited thereby, and that other embodiments or modifications that may be suggested to those having the benefit of the teachings herein are intended to be reserved especially as they fall within the scope and spirit of the claims here appended.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT82100267T ATE16662T1 (en) | 1981-01-15 | 1982-01-15 | ADAPTER FOR CONNECTION WITH A SWITCH. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US22548381A | 1981-01-15 | 1981-01-15 | |
US225483 | 1981-01-15 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0056634A2 true EP0056634A2 (en) | 1982-07-28 |
EP0056634A3 EP0056634A3 (en) | 1983-05-18 |
EP0056634B1 EP0056634B1 (en) | 1985-11-21 |
Family
ID=22845056
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82100267A Expired EP0056634B1 (en) | 1981-01-15 | 1982-01-15 | Switch connection adapter |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0056634B1 (en) |
AT (1) | ATE16662T1 (en) |
AU (1) | AU548386B2 (en) |
DE (1) | DE3267477D1 (en) |
DK (1) | DK18182A (en) |
ZA (1) | ZA818215B (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2126423A1 (en) * | 1970-05-28 | 1972-02-17 | Burndy Corp | Electrical connection terminals in order |
FR2250214A1 (en) * | 1973-11-02 | 1975-05-30 | Northern Electric Co | Switching device with an insulating body - has a number of switching positions in holes in the body and contact springs |
DE2835393A1 (en) * | 1978-08-12 | 1980-02-21 | Franz & Rutenbeck | Terminal strip for telephone set - has eight screw clamps and eight plug-type tags to handle all types of connector commonly in use |
-
1981
- 1981-11-26 ZA ZA818215A patent/ZA818215B/en unknown
- 1981-12-17 AU AU78589/81A patent/AU548386B2/en not_active Ceased
-
1982
- 1982-01-15 DE DE8282100267T patent/DE3267477D1/en not_active Expired
- 1982-01-15 EP EP82100267A patent/EP0056634B1/en not_active Expired
- 1982-01-15 DK DK18182A patent/DK18182A/en not_active Application Discontinuation
- 1982-01-15 AT AT82100267T patent/ATE16662T1/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2126423A1 (en) * | 1970-05-28 | 1972-02-17 | Burndy Corp | Electrical connection terminals in order |
FR2250214A1 (en) * | 1973-11-02 | 1975-05-30 | Northern Electric Co | Switching device with an insulating body - has a number of switching positions in holes in the body and contact springs |
DE2835393A1 (en) * | 1978-08-12 | 1980-02-21 | Franz & Rutenbeck | Terminal strip for telephone set - has eight screw clamps and eight plug-type tags to handle all types of connector commonly in use |
Also Published As
Publication number | Publication date |
---|---|
AU7858981A (en) | 1982-07-22 |
DK18182A (en) | 1982-07-16 |
EP0056634A3 (en) | 1983-05-18 |
AU548386B2 (en) | 1985-12-12 |
ATE16662T1 (en) | 1985-12-15 |
EP0056634B1 (en) | 1985-11-21 |
ZA818215B (en) | 1982-11-24 |
DE3267477D1 (en) | 1986-01-02 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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AK | Designated contracting states |
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