Motor-equipped reduction gear device with a pre-stage

Details Motor-equipped reduction gear device with a pre-stage Motor-equipped reduction gear device with a pre-stage

1992-04-02

1993-06-22

Luong, Vinh T.

Machine element or mechanism

Elements

Gear casings

74421A, 74467, F16H 5702

Patent

active

052208524

ABSTRACT:
In a motor-equipped reduction gear device with a pre-stage, two covers, which have been indispensable in the past, namely a joint cover and a pre-stage cover, are integrated into a one-body cover (130). Also, the diameter (D1) of the addendum circle of the pinion (110) mounted on the tip of the motor shaft 108 is designed to be smaller than the diameter (D2) of the portion of the motor shaft (108) which extends into the one-body cover (130). This allows the one-body cover (130) to be mounted with the pinion (110) already attached to the tip of the motor shaft (108). The one-body cover (130) can freely and easily be attached to the motor (102) and the gear box (106). As a result, the number of parts is reduced and light weight and compactness are achieved, and accuracy of the center distance and parallelism are improved because cumulative machining errors can be avoided. Furthermore, cost down and improved rigidity are achieved and the number of factors which may cause oil leakage is decreased.

REFERENCES:
patent: 1988338 (1935-01-01), Schmitter et al.
patent: 3234808 (1964-01-01), Nelson
patent: 5056213 (1991-10-01), Behnke et al.
patent: 5058455 (1991-10-01), Nemoto et al.
patent: 5092196 (1992-03-01), Kameda et al.
patent: 5092736 (1992-03-01), Herlitzek
patent: 5107718 (1992-04-01), Inagawa

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