Clock spring

Details Clock spring Clock spring

1993-07-27

1994-04-19

Paumen, Gary F.

Electrical connectors

With relatively guided members and intermediate pliable...

Relatively movable about axis

439 15, H01R 3504

Patent

active

053040716

ABSTRACT:
A clock spring for use with a steering device of an automobile, including a fixed member, a movable member rotatably mounted on the fixed member with a cable accommodating portion defined therebetween, and a cable accommodated in the cable accommodating portion for effecting electrical connection between the fixed member and the movable member. One end of the cable is fixed to the fixed member and led out of the fixed member, while the other end of the cable is fixed to the movable member and led out of the movable member. One portion of the cable is wrapped in one direction on either of the fixed member or the movable member, while the other portion is wrapped in the opposite direction reverse to the one direction on the other of the fixed member and the movable member, whereby an inverted portion of the cable is formed between the one portion and the other portion. The improvement of the clock spring resides in the point that at least one of opposed surfaces of the fixed member and the movable member is provided with an outwardly expanded portion. With this construction, buckling or rupture due to bending fatigue of the inverted portion of the cable is prevented.

REFERENCES:
patent: 3763455 (1973-10-01), Confer et al.
patent: 4540223 (1985-09-01), Schmerda et al.
patent: 4721469 (1988-01-01), Carlson
patent: 4927365 (1990-05-01), Schauer et al.
patent: 4928901 (1990-05-01), Bannai et al.
patent: 5149273 (1992-09-01), Bannai et al.

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