Electric lock actuator

Details Electric lock actuator Electric lock actuator

1996-12-03

1999-04-06

Marmor, Charles A.

Machine element or mechanism

Gearing

Yieldability in gear trains

744248VA, 464 57, F16H 2514

Patent

active

058903933

ABSTRACT:
An electric actuator reciprocates an output shaft driven by an electric motor in a linear manner. The actuator has a main body case. A rotating body supported by the case includes a pin rotating body, a gear wheel, and a coil spring. The gear wheel is meshed with a pinion that is fixed to the drive shaft of the electric motor. The rotation of the gear wheel is transmitted to the pin rotating body by the coil spring. The pin rotating body includes a rotary shaft. The rotary shaft has a pair of guide pins provided on its outer surface. A cylindrical cam is fixed to the output shaft, which is supported by the case. The cylindrical cam includes a spiral guided portion defined on its inner surface. The guided portion slides against both guide pins of the rotary shaft. The drive force of the electric motor rotates the rotary shaft by means of the gear wheel and the coil spring. As the rotary shaft is rotated, the output shaft is reciprocated along the rotary shaft with the guided portion guided by both guide pins.

REFERENCES:
patent: 2616274 (1952-11-01), Landrum
patent: 2936625 (1960-05-01), Heiseler
patent: 4518181 (1985-05-01), Yamada
patent: 4669283 (1987-06-01), Ingenhoven
patent: 4723454 (1988-02-01), Periou et al.
patent: 4941694 (1990-07-01), Bartel et al.
patent: 4978155 (1990-12-01), Kobayashi
patent: 5389040 (1995-02-01), Kakimi
patent: 5526710 (1996-06-01), Ohta

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