Machine element or mechanism – Gearing – Yieldability in gear trains
Patent
1991-09-09
1993-01-12
Herrmann, Allan D.
Machine element or mechanism
Gearing
Yieldability in gear trains
74425, 464 73, F16D 368, F16H 5514
Patent
active
051780267
ABSTRACT:
A damper device for a motor includes a worm wheel meshingly engaged with a worm on a motor shaft. The worm wheel has a tubular flange in which a plurality of recesses are formed. A rotatable torque transmission disk is connected to an output shaft for rotation therewith. The torque transmission disk has a plurality of radial protrusions formed on an outer periphery thereof. A resilient damper/coupling member is interposed between the worm wheel and the torque transmission disk so as to transmit a torque of the motor to the output shaft. The protrusions of the torque transmission disk are loosely fitted respectively in the recesses in the flange of the worm wheel. With this construction, when a large load is applied to the output shaft, the protrusions are abutted respectively against the edges of the recesses, thereby preventing an undue deformation or twisting of the damper/coupling member.
REFERENCES:
patent: 3443449 (1969-05-01), Kotarski
patent: 3554045 (1971-01-01), Littmann
patent: 4748865 (1988-06-01), Umezawa et al.
patent: 4899608 (1990-02-01), Knappe et al.
Herrmann Allan D.
Matsushita Electric - Industrial Co., Ltd.
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