Socket contact with arc arresting member

• US 5,591,039 A
• Filed: 06/01/1995
• Issued: 01/07/1997
• Est. Priority Date: 06/01/1995
• Status: Expired due to Term

• Current Assignee: TVM Group, Inc.
• Original Assignee: Elcon Products International Company
• Inventors: Matthews, Russell H.
• Primary Examiner(s): Pirlot, David L.
• Assistant Examiner(s): KIM, YONG KI
• Application Number:
  US08/456,686
• Time in Patent Office: 586 Days
• Field of Search: 439/842, 439/843, 439/851, 439/852, 439/856, 439/857, 439/860, 439/862, 439/181, 439/183, 439/86, 439/88
• US Class Current: 439/181
• CPC Class Codes: H01R 13/111 co-operating with pins having a circular transverse section
• CPC Class Codes: H01R 13/187 with spring member in the socket
• CPC Class Codes: H01R 13/426 Securing by a separate resilient retaining piece supported by base or case, e.g. collar or metal contact-retention clip
• CPC Class Codes: H01R 13/53 Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing

Abstract

An electrical socket for mating with a pin contact is provided which has an expansion ring adjacent to the opening into the electrical socket so that when the pin contact is brought into mating relation with the socket, an electrical connection is made between the pin contact and the expansion ring to prevent deleterious arcing to a thin conductive contact element in the socket.

Claims

1. A socket contact for mating with a pin contact, said socket contact comprising:

a section for attaching to an electrical component;

a tubular section forming a bore for receiving the pin contact;

a conductive area around an inner wall of the bore and having a contact portion for contacting the pin contact; and

an elastic expansion member located adjacent to a forward opening in the tubular section, the expansion member having an opening smaller than the outer diameter of the pin contact for initially engaging the pin contact and establishing an electrical connection between the pin contact and socket contact, through the elastic expansion member and then expanding resiliently so as to let the pin contact pass therethrough into the bore, whereby the initial engagement and resulting electrical connection between the pin contact and the expansion member precludes deleterious electrical arcing between the pin contact and the conductive area.

2. The socket contact of claim 1 wherein the tubular section further comprises an annular seat having a diameter greater than the diameter of the bore and being adjacent to the forward opening for receiving the expansion member.

3. The socket contact of claim 1 wherein the expansion member is a split ring.

4. The socket contact of claim 1 wherein the conductive area includes a strip of spring contacts of conductive material mounted substantially around the inner wall.

5. The socket contact of claim 4 wherein the contact portion comprises a plurality of spaced apart cross members with a centrally disposed segment along their length having a reduced diameter and being longitudinally aligned with an axis of the tubular section.

6. An electrical socket contact for mating with a pin contact in an electrical connector, said socket contact comprising:

an electrical component-attaching end;

a cylindrical section opposite of the electrical component-attaching end having a cavity therethrough for receiving the pin contact and an annular recess positioned adjacent to an opening into the cavity;

a generally cylindrical contact area located in the cavity with a segment having a reduced inner diameter for contacting the pin contact; and

an arc arresting member seated in the annular recess, the arc arresting member having a segment with an inner diameter smaller than an outer diameter of the pin contact whereby when the pin contact is inserted through the opening into the cavity an electrical connection is made between the pin contact and the arc arresting member and the arc arresting member is forced to expand by the pin contact as the pin contact is inserted into the cavity of the cylindrical section.

7. The socket contact of claim 6 wherein the arc arresting member is a split collar.