Contact probe unit including needle members urged by a resilient

Details Contact probe unit including needle members urged by a resilient Contact probe unit including needle members urged by a resilient

1997-03-10

1998-08-25

Karlsen, Ernest F.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

G01R 3102

Patent

active

057986550

ABSTRACT:
Provided is a contact probe unit for establishing an electric contact between parts to be contacted and terminals of an external circuit. A plurality of needle members are slidably received individually in support holes provided in a support block. A resilient block is placed over the upper surface of the support block, and the needle members can be thereby engaged to the parts to be contacted with a suitable spring force. The electric contact between the upper ends of the needle members and the terminals of the external circuit may be achieved either directly or via a pressure sensitive electroconductive resilient block. The use of resiliently supported needle members ensures a high reliability and a high durability. Furthermore, a high dimensional precision on the pitch of the front ends of the needle members can be achieved without any difficulty.

REFERENCES:
patent: 4571542 (1986-02-01), Arai
patent: 4735847 (1988-04-01), Fujiwara et al.
patent: 4820376 (1989-04-01), Lambert et al.
patent: 5132058 (1992-07-01), Suyama et al.
patent: 5157325 (1992-10-01), Murphy
patent: 5206585 (1993-04-01), Chang et al.
patent: 5219765 (1993-06-01), Yoshida et al.
patent: 5317255 (1994-05-01), Suyama et al.
patent: 5410260 (1995-04-01), Kazama

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