US3871737A - Socket contact with conductive elastomer contacting surface - Google Patents
Socket contact with conductive elastomer contacting surface Download PDFInfo
- Publication number
- US3871737A US3871737A US476612A US47661274A US3871737A US 3871737 A US3871737 A US 3871737A US 476612 A US476612 A US 476612A US 47661274 A US47661274 A US 47661274A US 3871737 A US3871737 A US 3871737A
- Authority
- US
- United States
- Prior art keywords
- pin
- layer
- hole
- elastomer material
- contact
- 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 - Lifetime
Links
Images
Classifications
-
- 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
- H01R13/02—Contact members
- H01R13/22—Contacts for co-operating by abutting
- H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
- H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
- H01R13/2414—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means conductive elastomers
-
- 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
- H01R13/02—Contact members
- H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
- H01R13/187—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with spring member in the socket
Definitions
- This invention relates to a socket contact which provides a layer of conductive elastomer material along at least one wall of the socket hole.
- a contact in which a complete electrical circuit is established only when the pin and socket are fully mated may be provided by uti lizing a conductive elastomer'material which is conductive only when placed under compression.
- This invention relates to socket contacts for electrical connectors and, more particularly, to a socket contact having a conductive elastomer contacting surface.
- Electrical connectors normally consist of a male element having one or more projecting pin contacts and a female element having a like number of socket contacts. These socket contacts have a pin-receiving hole in their forward face.
- Some sort of a metallic spring member is normally either mounted in the hole in engagement with the walls thereof or is formed from the walls of the contact member itself. These springs serve to perform the dual function of physically retaining a pin in the socket and providing good electrical contact between the pin and socket,'the springs also serve to compensate for any slight misalignment of a pin with its sockets.
- this invention provides a socket contact for an electrical connector which contact has a metallic contact body with a forward face having an elongated hole formed therein, the hole extending from the forward face.
- this invention provides a layer of conductive elastomer material which is positioned in the hole along atleast one wall thereof. Where the layer of elastomer material is positioned only along the rear wall of the hole and the material is of the type which is conductive only when placed under compression, a circuit is completed through the socket contact only when the connected elements are fully mated.
- FIG. 1 is a cut-away side view of a socket contact of a preferred embodiment of the invention with a mating pin positioned therein.
- FIG. 2 is a cut-away side view of an alternative embodiment of the invention.
- a socket contact 10 having a metallic body 11 which contact has a wire crimp pocket 12 formed in its rear end and a pin-receiving hole 14 in its forward face.
- a flange 16 is provided on the contact for use in retaining .the contact in a connector.
- pocket 12 and flange 16 do not form part of the present invention.
- any suitable means for permitting the connecting of a wire or other current carrying element to the contact may be utilized in place of pocket 12 and flange 16 may be replaced by any other suitable contact retention element or may be eliminated completely.
- the cross-sectional shape of hole 14 may be circular, square, or any other desired shape with the peripheral surface I7 of the hole 14 extending from one end 17a of said body 11.
- the shape of the hole 14 depending on the cross-section of the metal pin or male contact 18 with which socket contact 10 is to be mated.
- Pin 18 has a peripheral surface 19 and a radial or transverse forward end surface 190.
- the cross-section of hole 14 is slightly larger than that of the pin and the leading edge of the hole is tapered so as to permit easy insertion of the pin, and to permit the socket to accept slightly misaligned pins.
- a layer 22 of a conductive elastomer material is formed along the rear transverse surface or wall 20 of hole 14 .
- Layer 22 may, for example, be an electrically conductive silicone elastomer or other known conductive elastomer which is normally conductive. However, for certain applications it is preferable that layer 22 be of a material such as Pressex, manufactured by Essex International, which material conducts electrical current only when compressed. Where Pressex or a similar conductive elastomer is utilized for the layer 22, an electrical circuit is not established between socket 10 and pin 18 until the pin has been fully (or at least substantially) inserted into the socket, compressing layer 22 to render it conductive under the axial pressure of said pin against layer 22 and the hole rear metal surface 19a defining the rear axial end of the hole. Thus, electrical contact over the entire contacting area is established before the electrical circuit is completed, preventing possible arcing'or burn-out where live circuits are being connected.
- Layer 22 may be rammed into hole 14 and held in by friction, may be molded to the wall 20, or may be otherwise secured in the hole.
- the operation is relatively simple and inexpensive.
- the conductive elastomer is not subject to deformation or other permanent distortion as the result of use, pin misalignment, or other factors and, covering the entire rear wall of hole 14, the conductive elastomer makes contact with the pin over a-relatively large area.
- the socket of this invention is adapted for making reliable, relatively low resistance electrical contact with an inserted pin even after repeated use, and possible misuse, of the socket.
- FIG. 2 shows an alternative embodiment of the invention which differs from the embodiment shown in 7 FIG. 1 only in that hole 14 has a conductive elastomer layer 24 positioned therein which layer covers both the rear wall and the side walls of the hole.
- the space 26 between the side-wall layers of conductive elastomer is substantially less than the cross-section of pin 18, so that the elastomer on the side walls is also deformed when a pin is inserted. This assures good electrical contact between the pin and the conductive elastomer over substantially the entire length of the pin which is in hole 14. If a Pressex-type conductive elastomer is utilized with the embodiment of the invention shown in FIG.
- the opening 26 will have to be made quite small so as to assure adequate pressure on the conductive elastomer along the side walls to render the elastomer conductive.
- the portion of the conductive elastomer layer near the front of the hole 14 is tapered slightly for ease of pin insertion and to reduce the tolerances on pin alignment.
- a socket contact for use in an electrical connector adapted to receive a metal pin, said pin having a peripheral surface and a transverse forward end surface for establishing an electrical connection between said pin and contact comprising:
- a metallic contact body having an elongated hole formed therein with an elongated axis, said hole extending from one end of said body and defined by an axially extending peripheral surface portion, a rear metal surface on said body at a position spaced in one direction from said one end of said body to define a rear axial end of said hole;
Abstract
Description
Claims (2)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5739673A GB1437825A (en) | 1973-01-15 | 1973-12-11 | Socket contact with conductive elastomer contacint surface |
FR7401168A FR2214179A1 (en) | 1973-01-15 | 1974-01-14 | |
DE2401793A DE2401793A1 (en) | 1973-01-15 | 1974-01-15 | SOCKET CONTACT |
US476612A US3871737A (en) | 1973-01-15 | 1974-06-05 | Socket contact with conductive elastomer contacting surface |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US32386773A | 1973-01-15 | 1973-01-15 | |
US476612A US3871737A (en) | 1973-01-15 | 1974-06-05 | Socket contact with conductive elastomer contacting surface |
Publications (1)
Publication Number | Publication Date |
---|---|
US3871737A true US3871737A (en) | 1975-03-18 |
Family
ID=26984178
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US476612A Expired - Lifetime US3871737A (en) | 1973-01-15 | 1974-06-05 | Socket contact with conductive elastomer contacting surface |
Country Status (4)
Country | Link |
---|---|
US (1) | US3871737A (en) |
DE (1) | DE2401793A1 (en) |
FR (1) | FR2214179A1 (en) |
GB (1) | GB1437825A (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4097111A (en) * | 1976-06-01 | 1978-06-27 | The Murdock Corporation | Electrical connector |
US4262982A (en) * | 1977-03-10 | 1981-04-21 | Needle Industries Ltd. | Electrical socket useful for connecting an electrode catheter to a cardiac pacemaker casing |
US4706639A (en) * | 1986-12-04 | 1987-11-17 | General Motors Corporation | Integrated direct ignition module |
US4708668A (en) * | 1986-03-17 | 1987-11-24 | Stransky Le Roy V | Process of manufacturing an improved electrical connector and product thereof |
US4810899A (en) * | 1985-12-13 | 1989-03-07 | Orega Electronique Et Mecanique | High-voltage connection device, especially for a high-voltage transformer, without lead-out cables and with detachable potentiometer set |
US4859194A (en) * | 1988-04-06 | 1989-08-22 | Proprietary Technology, Inc. | Spark plug connector |
DE4005476A1 (en) * | 1990-01-18 | 1991-07-25 | Bodo D Sperling | Electrical contact socket with insulated conductive plastics elements - embedded in resilient material for firm conductive contact and mechanical grip on pins of inserted plug |
US6403226B1 (en) | 1996-05-17 | 2002-06-11 | 3M Innovative Properties Company | Electronic assemblies with elastomeric members made from cured, room temperature curable silicone compositions having improved stress relaxation resistance |
US6771939B1 (en) * | 1999-06-30 | 2004-08-03 | Nokia Mobile Phones Limited | Contacts covered with electro-resistive material on a radio telephone |
US20040171287A1 (en) * | 2001-07-12 | 2004-09-02 | Vasilios Spiropoulos | Contact element |
US20050177027A1 (en) * | 2004-02-09 | 2005-08-11 | Olympus Corporation | Endoscope apparatus |
US20070276182A1 (en) * | 2004-07-29 | 2007-11-29 | C2Cure, Inc. | Endoscope electronics assembly |
EP2634867A1 (en) * | 2010-10-25 | 2013-09-04 | Yazaki Corporation | Connector structure for device connection |
US20140243595A1 (en) * | 2013-02-27 | 2014-08-28 | Fujifilm Corporation | Electronic endoscope and method of manufacturing electronic endoscope |
US20170104283A1 (en) * | 2014-06-12 | 2017-04-13 | Pfisterer Kontaktsysteme Gmbh | Apparatus for making contact with an electrical conductor, and connection or connecting device with an apparatus of this kind |
US9941617B2 (en) | 2015-11-25 | 2018-04-10 | Odu Gmbh & Co. Kg | Damping element for providing axial damping in a plug-in connector |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW441227B (en) | 1995-05-26 | 2001-06-16 | E Tec Ag | Contact arrangement for detachably attaching an electric component, especially an integrated circuit to a printed circuit board |
CH693478A5 (en) | 1996-05-10 | 2003-08-15 | E Tec Ag | Contact socket for detachable connection of IC to PCB |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2951817A (en) * | 1959-07-28 | 1960-09-06 | Thomas E Myers | Variable resistance material |
US3209298A (en) * | 1961-10-31 | 1965-09-28 | Westinghouse Electric Corp | Arrangement for controlling circuit conductivity |
US3278890A (en) * | 1964-04-13 | 1966-10-11 | Pylon Company Inc | Female socket connector |
US3509296A (en) * | 1967-10-23 | 1970-04-28 | Ncr Co | Resilient variable-conductivity circuit controlling means |
US3648002A (en) * | 1970-05-04 | 1972-03-07 | Essex International Inc | Current control apparatus and methods of manufacture |
-
1973
- 1973-12-11 GB GB5739673A patent/GB1437825A/en not_active Expired
-
1974
- 1974-01-14 FR FR7401168A patent/FR2214179A1/fr not_active Withdrawn
- 1974-01-15 DE DE2401793A patent/DE2401793A1/en not_active Withdrawn
- 1974-06-05 US US476612A patent/US3871737A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2951817A (en) * | 1959-07-28 | 1960-09-06 | Thomas E Myers | Variable resistance material |
US3209298A (en) * | 1961-10-31 | 1965-09-28 | Westinghouse Electric Corp | Arrangement for controlling circuit conductivity |
US3278890A (en) * | 1964-04-13 | 1966-10-11 | Pylon Company Inc | Female socket connector |
US3509296A (en) * | 1967-10-23 | 1970-04-28 | Ncr Co | Resilient variable-conductivity circuit controlling means |
US3648002A (en) * | 1970-05-04 | 1972-03-07 | Essex International Inc | Current control apparatus and methods of manufacture |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4097111A (en) * | 1976-06-01 | 1978-06-27 | The Murdock Corporation | Electrical connector |
US4262982A (en) * | 1977-03-10 | 1981-04-21 | Needle Industries Ltd. | Electrical socket useful for connecting an electrode catheter to a cardiac pacemaker casing |
US4810899A (en) * | 1985-12-13 | 1989-03-07 | Orega Electronique Et Mecanique | High-voltage connection device, especially for a high-voltage transformer, without lead-out cables and with detachable potentiometer set |
US4708668A (en) * | 1986-03-17 | 1987-11-24 | Stransky Le Roy V | Process of manufacturing an improved electrical connector and product thereof |
US4706639A (en) * | 1986-12-04 | 1987-11-17 | General Motors Corporation | Integrated direct ignition module |
US4859194A (en) * | 1988-04-06 | 1989-08-22 | Proprietary Technology, Inc. | Spark plug connector |
DE4005476A1 (en) * | 1990-01-18 | 1991-07-25 | Bodo D Sperling | Electrical contact socket with insulated conductive plastics elements - embedded in resilient material for firm conductive contact and mechanical grip on pins of inserted plug |
US6403226B1 (en) | 1996-05-17 | 2002-06-11 | 3M Innovative Properties Company | Electronic assemblies with elastomeric members made from cured, room temperature curable silicone compositions having improved stress relaxation resistance |
US6771939B1 (en) * | 1999-06-30 | 2004-08-03 | Nokia Mobile Phones Limited | Contacts covered with electro-resistive material on a radio telephone |
US20040171287A1 (en) * | 2001-07-12 | 2004-09-02 | Vasilios Spiropoulos | Contact element |
US20050177027A1 (en) * | 2004-02-09 | 2005-08-11 | Olympus Corporation | Endoscope apparatus |
US7549958B2 (en) * | 2004-02-09 | 2009-06-23 | Olympus Corporation | Endoscope apparatus |
US20070276182A1 (en) * | 2004-07-29 | 2007-11-29 | C2Cure, Inc. | Endoscope electronics assembly |
EP2634867A1 (en) * | 2010-10-25 | 2013-09-04 | Yazaki Corporation | Connector structure for device connection |
EP2634867A4 (en) * | 2010-10-25 | 2014-03-26 | Yazaki Corp | Connector structure for device connection |
US9004928B2 (en) | 2010-10-25 | 2015-04-14 | Yazaki Corporation | Connector structure for device connection |
US20140243595A1 (en) * | 2013-02-27 | 2014-08-28 | Fujifilm Corporation | Electronic endoscope and method of manufacturing electronic endoscope |
US20170104283A1 (en) * | 2014-06-12 | 2017-04-13 | Pfisterer Kontaktsysteme Gmbh | Apparatus for making contact with an electrical conductor, and connection or connecting device with an apparatus of this kind |
US9876290B2 (en) * | 2014-06-12 | 2018-01-23 | Pfisterer Kontaktsysteme Gmbh | Apparatus for making contact with an electrical conductor, and connection or connecting device with an apparatus of this kind |
US9941617B2 (en) | 2015-11-25 | 2018-04-10 | Odu Gmbh & Co. Kg | Damping element for providing axial damping in a plug-in connector |
EP3174166B1 (en) * | 2015-11-25 | 2018-11-14 | ODU GmbH & Co KG. | Damping element for providing axial damping in a plug-in connector, plug-in connector and method for forming a plug-in connector |
Also Published As
Publication number | Publication date |
---|---|
GB1437825A (en) | 1976-06-03 |
DE2401793A1 (en) | 1974-07-18 |
FR2214179A1 (en) | 1974-08-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ALLIED CORPORATION COLUMBIA ROAD AND PARK AVENUE, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BUNKER RAMO CORPORATION A CORP. OF DE;REEL/FRAME:004149/0365 Effective date: 19820922 |
|
AS | Assignment |
Owner name: CANADIAN IMPERIAL BANK OF COMMERCE, NEW YORK AGENC Free format text: SECURITY INTEREST;ASSIGNOR:AMPHENOL CORPORATION;REEL/FRAME:004879/0030 Effective date: 19870515 |
|
AS | Assignment |
Owner name: AMPHENOL CORPORATION, LISLE, ILLINOIS A CORP. OF D Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ALLIED CORPORATION, A CORP. OF NY;REEL/FRAME:004844/0850 Effective date: 19870602 Owner name: AMPHENOL CORPORATION, A CORP. OF DE, ILLINOIS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ALLIED CORPORATION, A CORP. OF NY;REEL/FRAME:004844/0850 Effective date: 19870602 |
|
AS | Assignment |
Owner name: BANKERS TRUST COMPANY, AS AGENT Free format text: SECURITY INTEREST;ASSIGNOR:AMPHENOL CORPORATION, A CORPORATION OF DE;REEL/FRAME:006035/0283 Effective date: 19911118 |
|
AS | Assignment |
Owner name: AMPHENOL CORPORATION A CORP. OF DELAWARE Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:CANADIAN IMPERIAL BANK OF COMMERCE;REEL/FRAME:006147/0887 Effective date: 19911114 |
|
AS | Assignment |
Owner name: AMPHENOL CORPORATION, CONNECTICUT Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:BANKERS TRUST COMPANY;REEL/FRAME:007317/0148 Effective date: 19950104 |