Strain limiting mechanism

• US 3,933,404 A
• Filed: 07/03/1974
• Issued: 01/20/1976
• Est. Priority Date: 07/03/1974
• Status: Expired due to Term

• Current Assignee: Cooper Industries, Inc. (Eaton Corporation PLC.)
• Original Assignee: Joy Manufacturing Company
• Inventors: Oehlerking, A. Dean, Stoner, Charles G.
• Primary Examiner(s): McGlynn, Joseph H.
• Application Number:
  US05/485,340
• Time in Patent Office: 566 Days
• Field of Search: 339/45, 339/46, 339/48, 339/49, 339/59, 339/111, 339/255, 339/89, 339/90
• US Class Current: 439/188
• CPC Class Codes: H01R 13/56 Means for preventing chafing or fracture of flexible leads at outlet from coupling part
• CPC Class Codes: H01R 13/6315 allowing relative movement between coupling parts, e.g. floating connection for coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures, H01R12/91 takes precedence
• CPC Class Codes: Y10S 439/911 Safety, e.g. electrical disconnection required before opening housing

Abstract

An electrical connector assembly incorporating means for limiting cable tension to a predetermined value and precluding thereby mechanical failure of the cable.

Claims

1. An electrical connector portion comprising:

an insulating body member;

at least one elongated electrical contact rigidly carried by said body member and extending along an axis;

said contact being adapted to move relative to a mating contact of a mating connector portion in one direction along said axis while in electrical communication with such mating contact for only a given distance;

a connecting member supported on said body member for limited relative movement therebetween along said axis;

deformable means extending between said members for permitting said members to relatively move at least a predetermined distance only upon a predetermined minimum force acting to move said body member relative to said connecting member in a direction opposite said one direction; and

said predetermined distance being greater than such given distance.

2. An electrical connector portion as specified in claim 1 wherein said connecting member includes means adapted to be rigidly and releasably connected to such mating connector portion.

3. An electrical connector portion as specified in claim 1 wherein said deformable means is formed from a resilient elastomer.

4. An electrical connector portion as specified in claim 1 wherein said deformable means is captively received radially intermediate an inner peripheral portion of said connecting member and an outer peripheral portion of said body member.

5. An electrical connector portion as specified in claim 1 wherein said body member includes a circumferential groove extending radially inwardly from the outer periphery thereof and said deformable means is disposed within said groove.

6. An electrical connector portion as specified in claim 1 wherein said connecting member is coaxially rotatably carried by said body member.

7. An electrical connector portion as specified in claim 1 additionally comprising:

at least one other elongated electrical contact rigidly carried by said body member and extending parallel to said axis;

said other contact being adapted to move relative to another mating contact of such mating connector portion in said one direction while in electrical communication with such another mating contact for only a second given distance; and

said predetermined distance being less than such second given distance.

8. An electrical connector portion as specified in claim 7 wherein:

said at least one contact is a pilot contact being adapted to carry a relatively low voltage; and

said at least one other contact is a power contact being adapted to carry a relatively high voltage.

9. An electrical connector portion as specified in claim 1 wherein said connecting member encompasses a portion of said body member adjacent one end of said body member.

10. An electrical connector portion as specified in claim 9 wherein the end of said contact adjacent said portion of said body member is longitudinally spaced therefrom.

11. An electrical connector portion comprising:

a unitary insulating body member;

at least one elongated contact assembly carried by said body member and extending along an axis;

said contact assembly including first and second contact portions spaced along said axis a first predetermined distance from each other and an intermediate contact portion;

the length of said intermediate contact portion spanning said first distance to provide electrical communication between said first and second contact portions;

said body member being deformable to increase the dimension thereof in the direction of said axis upon a tensile force acting on said body member in a direction parallel to said axis;

said first and second contact portions being separated from each other a second distance greater than said first distance upon said tensile force acting with a predetermined minimum magnitude on said body member;

the maximum length of said intermediate contact portion being less than said second distance to interrupt electrical communication between said first and second contact portions upon said force reaching said predetermined minimum magnitude.

12. An electrical connector portion as specified in claim 11 wherein said intermediate contact portion is movably received within a substantially rigid sleeve carried by said body member.