Electrical pressure contact

• US 6,773,312 B2
• Filed: 08/23/2002
• Issued: 08/10/2004
• Est. Priority Date: 09/04/2001
• Status: Active Grant

• Current Assignee: ERA-Contact GmbH
• Original Assignee: ERA-Contact GmbH
• Inventors: Kainz, Andreas, Bauer, Monika, Schumann, Bernd, Moskob, Frank, Veit, Jürgen, Dost, Robert
• Primary Examiner(s): Gilman, Alex
• Application Number:
  US10/226,401
• Publication Number:
  US 20030049974A1
• Time in Patent Office: 718 Days
• Field of Search: 439/824, 439/819, 439/840, 439/846, 439/848, 439/10, 439/842, 439/877, 439/29
• US Class Current: 439/824
• CPC Class Codes: H01R 13/2421 using coil springs

Abstract

An electrical pressure contact includes a housing sleeve with an end facing the contact and an end facing away from the contact, a contact pin axially slidably supported in the housing sleeve, which pin extends out of the housing sleeve at the side facing the contact, which pin is a pushable into the housing sleeve against the biasing force of the a biasing element arranged in the housing sleeve, and through the conductive body of which pin the electrical contact is made, a terminal piece for fastening to an electrical supply conductor at the end of the housing facing away from the contact, and an axially flexible electrical conductor arranged in the housing sleeve between the terminal piece and the contact pin. The flexible electrical conductor is at its end facing the contact clamped into an axial bore formed in the end of the contact pin facing away from the contact and at its end facing away from the contact is clamped in an axial bore formed in the end of the terminal piece facing the contact.

Claims

1. An electrical pressure contact, comprising:

a housing sleeve with a contact facing end and an end facing away from the contact,

a contact pin slidably supported in the housing sleeve, which pin at the contact facing side of the housing sleeve protrudes out of the housing sleeve, is pushable into the housing sleeve against the bias of a biasing element arranged in the housing sleeve, and through its conductive body an electrical contact is made,

a terminal piece at the end of the housing sleeve facing away from the contact for the fastening of an electric supply conductor, and

an axially flexible electric conductor arranged in the housing sleeve between the terminal piece and the contact pin, said flexible electric conductor being a braided tubular conductor,

characterized in that the flexible electric conductor at its end facing the contact is clamped in an axial bore in the end of the contact pin facing away from the contact and at its end facing away from the contact is clamped in an axial bore formed in the end of the terminal piece facing the contact.

2. An electrical pressure contact according to claim 1, further characterized in that the housing sleeve, the contact pin, and the terminal piece are made of brass with a small amount of lead, especially of CuZn38Pb2.

3. An electrical pressure contact according to claim 1, further characterized in that the braided tubular conductor comprises strands of a conductor material.

4. An electrical pressure contact according to claim 3, further characterized in that the conductor material of the braided tubular conductor comprises strands of copper.

5. An electrical pressure contact according to claim 1, further characterized in that the contact pin has a rounded contact surface facing the contact.

6. An electrical pressure contact according to claim 5, further characterized in that the contact surface is gold plated.

7. An electrical pressure contact according to claim 1, further characterized in that a contact pin of silver is inserted into the end of the contact pin facing the contact.

8. An electrical pressure contact according to claim 7, further characterized in that the contact pin has a gold-plated contact surface.

9. An electrical pressure contact according to claim 1, further characterized in that the terminal piece has a second cylindrical section whose diameter corresponds to the internal diameter of the housing sleeve and has a crimping surface over which the housing sleeve one is crimped.

10. An electrical pressure contact according to claim 9, further characterized in that the crimping surface has a groove surrounding the second cylindrical section.

11. An electrical pressure contact according to claim 9, further characterized in that the terminal piece on the side of the second cylindrical section facing away from the contact has an axially arranged threaded bolt for connection with the electrical supply conductor.

12. An electrical pressure contact according to claim 1, further characterized in that the biasing element is a helical spring.

13. An electrical pressure contact according to claim 12, further characterized in that the terminal piece has a first cylindrical section facing the contact, which first cylindrical section is arranged coaxial with the housing sleeve and is received in the helical spring.

14. An electrical pressure contact according to claim 12, further characterized in that the contact pin has in its circumferential surface a surrounding groove arranged perpendicularly to the contact pin axis, in which groove a locking ring is received, which locking ring on its side facing the contact forms a stop for a radial inwardly facing shoulder on the end of the housing facing the contact and on its side facing away from the contact forms a stop for the spring.

15. An electrical pressure contact according to claim 12, further characterized in that the flexible electric conductor is formed by the helical spring.

16. An electrical pressure contact according to claim 15, further characterized in that the contact pin in its circumferential surface has a surrounding groove arranged perpendicularly to the pin axis in which a locking ring is received, which locking ring on its side facing the contact forms a stop for a radial inwardly facing shoulder at the end of the housing facing the contact.