Device for detecting the position of a moving member

Details Device for detecting the position of a moving member Device for detecting the position of a moving member

1996-01-26

1998-08-11

Luong, Viinh T.

Machine element or mechanism

Elements

Gear casings

74 8311, 74 8313, 475342, 49334, 296223, F16H 5702

Patent

active

057912041

ABSTRACT:
A position detecting device includes a ring gear that is disposed on an outer side of an output shaft of a motor and rotates with the rotation of the output shaft, fixed contact terminals fixed to a cover plate, and a rotary contact terminal provided on a ring gear. As the ring gear rotates, the fixed contact terminals and the rotary contact terminal are brought into contact with each other, thereby detecting a rotational position of the output shaft. The position detecting device further includes a clutch mechanism for preventing the rotation of the ring gear by more than a predetermined degree while permitting the rotation of the output shaft of the motor in the state of contact. Hence, even if the output shaft of the motor is rotated sufficiently, this state of contact is maintained.

REFERENCES:
patent: 3422704 (1969-01-01), Catlett
patent: 3980846 (1976-09-01), Yoshida
patent: 4468063 (1984-08-01), Yukimoto et al.
patent: 4561691 (1985-12-01), Kawai et al.
patent: 4599824 (1986-07-01), Mitsuhashi et al.
patent: 4625328 (1986-11-01), Carli
patent: 4659141 (1987-04-01), Masuda et al.
patent: 4920784 (1990-05-01), Gonsior
patent: 5221239 (1993-06-01), Catlett
patent: 5271182 (1993-12-01), Greisner et al.
patent: 5386885 (1995-02-01), Bunzl et al.

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