Swivelling electrical connector

• US 4,003,616 A
• Filed: 12/03/1975
• Issued: 01/18/1977
• Est. Priority Date: 12/03/1975
• Status: Expired due to Term

• Current Assignee: CLAIROL INCORPORATED
• Original Assignee: CLAIROL INCORPORATED
• Inventors: Springer, William E.
• Primary Examiner(s): Tupman, W.
• Assistant Examiner(s): Jones, DeWalden W.
• Application Number:
  US05/637,455
• Time in Patent Office: 412 Days
• Field of Search: 339/8 R, 339/8 P, 339/58, 339/62, 339/101, 174/46
• US Class Current: 439/23
• CPC Class Codes: H01R 39/64 Devices for uninterrupted current collection

Abstract

A swivelling electrical connector includes a plug having an axially aligned contact and pair of tandemly spaced circumferential contacts. The plug registers with a socket structure disposed within the housing of an appliance which has complementary spring loaded contacts. One of the tandem contacts on the plug, preferably the one nearest the end of the housing, is a ground contact.

Claims

1. An electrical connector for an appliance having a housing wherein the connector couples the appliance to a power cord having three conductors therein, said connector comprising:

a. a plug, said plug comprising;

an insulating body having a plug contact-supporting portion and a cord-engaging portion, wherein said plug contact-supporting portion is cylindrical in cross-section, and said cord-engaging portion has a section extending plug contact-supporting portion;

a first plug contact supported by said plug contact-supporting portion and axially aligned therewith, wherein said first contact is connected to a first conductor of the power cord;

a second plug contact circumferentially supported by said plug contact-supporting portion and connected to a second conductor of said power cord;

a third plug contact circumferentially supported on said plug contact-supporting portion and axially spaced from said second contact in the direction of said power cord, wherein a third conductor of said power cord is connected thereto, and

shoulder means formed on said plug for retaining said plug in said housing;

b. a socket formed in one end of said housing for rotatably receiving said plug, said socket comprising socket contacts slidably engaging said plug contacts to allow rotation of said plug relative to said socket and said housing, while maintaining electrical connections therebetween, and

annular shoulder means within said socket and registering with said shoulder means on said plug for retaining said plug within said socket and said housing.

2. The connector of claim 1 wherein the socket contacts are leaf spring members urged in engagement with the plug contacts by inherent resiliency.

3. The connector of claim 2 wherein the socket contacts engaging the second and third plug contacts are U-shaped leaf springs retained in tandem on a printed circuit board disposed within said socket adjacent said plug, and wherein said first plug contact is a pin extending beyond said insulation body into abutting relation with the associated socket contact.

4. The electrical connector of claim 1 wherein the connections between said second and third plug contacts and said conductors are formed by seating the conductors within lanced depressions formed in the contacts.

5. The electrical connector of claim 1 wherein the first plug contact is a hollow pin, which is crimped to the first conductor.

6. The electrical connector of claim 1 wherein the first conductor is a power conductor, the second conductor is a ground supply conductor, and the third conductor is a ground conductor.

7. The electrical connector of claim 3 wherein the socket includes a bulkhead having a bore therethrough to receive the first conductor so as to support the plug, and wherein the associated socket conductor is disposed on the opposite side of said bulkhead from said plug.

8. The electrical connector of claim 1 wherein the conductors of said power cord each have a layer of insulation therearound, which is surrounded by the insulating body.

9. The electrical connector of claim 1 wherein the annular shoulder means of said socket projects inwardly therefrom and includes an annular indentation defining a pair of annular spaced walls, and wherein the shoulder means of said plug projects radially therefrom and registers between said walls.

10. The electrical connector of claim 9 wherein the shoulder means of said plug is defined by flange portions on said second and third plug contacts which have a projecting section of said insulating body therebetween.

11. An electrical connector according to claim 1 wherein the insulating body is molded from a resilient material which is molded around and bonded to said power cord.

12. The electrical connector of claim 11 wherein the resilient material is polyvinyl chloride.

13. An electrical connector according to claim 1 wherein said section extending the plug contact-supporting portion extends at an angle to the plug contact-supporting portion.