Electric connector of press-contact holding type

• US 4,408,814 A
• Filed: 08/19/1981
• Issued: 10/11/1983
• Est. Priority Date: 08/22/1980
• Status: Expired due to Term

• Current Assignee: Shin-Etsu Polymer Company Limited (Shin-Etsu Chemical Company Limited)
• Original Assignee: Shin-Etsu Polymer Company Limited (Shin-Etsu Chemical Company Limited)
• Inventors: Takashi, Nogami, Haruhiko, Masuda
• Primary Examiner(s): McQuade, John
• Assistant Examiner(s): Austin, Paula
• Application Number:
  US06/294,215
• Time in Patent Office: 783 Days
• Field of Search: 339/17 LM, 339/17 M, 339/DIG. 3, 339/59, 339/61 R, 339/61 M
• US Class Current: 439/91
• CPC Class Codes: H01R 13/2414 conductive elastomers
• CPC Class Codes: H05K 3/325 by abutting or pinching, i.e. without alloying process; mechanical auxiliary parts therefor adaptations of leads inserted in holes for press-fit connections H05K3/308
• CPC Class Codes: H05K 3/368 parallel to each other H05K3/361 takes precedence
• CPC Class Codes: Y10T 428/2395 Nap type surface

Abstract

The electric connector of the invention is of the so-called stratification type formed of an alternate stratification of layers of electrically conductive and insulating rubbers surrounded by zebra-like striped lateral surfaces and having a rectangular cross section in the same manner as in the conventional stratification type connectors. Different from conventional ones, the inventive connector is provided with a plurality of whisker-like projections of electroconductive linear bodies, e.g. carbon fibers or metal wires, which are the end portions of the linear bodies dispersed and embedded in the layers of the conductive rubber in alignment in a direction, on at least one of the striped lateral surfaces in the areas corresponding to the peripheral surfaces of the conductive layers. By virtue of the whisker-like projections, the inventive connector is readily combined with one or more of other connectors of similar type by merely putting them together side by side to establish very reliable electric connection between them because the end portions of the whisker-like projections of the inventive connector run into the conductive layers of the other connector in contact with the former.

Claims

1. An elastomeric electric connector of the stratification type in the form of an alternately stratified body having a rectangular cross section formed of a plurality of layers of an electrically conductive rubber and a plurality of layers of an electrically insulating rubber bonded together and surrounded by the lateral surfaces each having a striped appearance made of the peripheral surfaces of the alternately stratified layers of the rubbers, in which a plurality of whisker-like upright projections of electrically conductive linear bodies are provided on at least one of the lateral surfaces of the striped appearance in the areas corresponding to the peripheral surfaces of the layers of the electrically conductive rubber.

2. The elastomeric electric connector as claimed in claim 1 wherein the whisker-like upright projections of the electrically conductive linear bodies are the end portions of the linear bodies dispersed and embedded in the electrically conductive rubber as aligned in the direction perpendicular to the peripheral surface of the layer on which the projections are provided.

3. The elastomeric electric connector as claimed in claim 1 wherein the electrically conductive linear bodies are carbon fibers or metal wires.

4. A composite elastomeric electric connector of the stratification type composed of at least two unit elastomeric electric connectors of the stratification type, each in the form of an alternately stratified body having a rectangular cross section formed of a plurality of layers of an electrically conductive rubber and a plurality of layers of an electrically insulating rubber bonded together and each being surrounded by the lateral surfaces each having a striped appearance made of the peripheral surfaces of the alternately stratified layers of the rubbers, put together side by side with the lateral surfaces thereof being in contact with each other, in which the lateral surface of at least one of the unit connectors in contact with lateral surface of the other unit connector is provided with a plurality of whisker-like upright projections of electrically conductive linear bodies in the areas corresponding to the peripheral surfaces of the layers of the electrically conductive rubber with the end portions of the said whisker-like projections reaching the layers of the electrically conductive rubber in the other unit connector.

5. The composite elastomeric electric connector as claimed in claim 4 wherein the unit elastomeric electric connectors are adhesively bonded together at the lateral surfaces thereof through a layer of an adhesive intervening therebetween with the whisker-like upright projections penetrating completely through the layer of the adhesive.