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US 8,205,517 B2Granted
Motor-driven actuator
AssigneeU-Shin Ltd.
InventorsKeisuke Fukushima, Hideki Noma
Life of this patent
Estimating the term…
Abstract
A motor-driven actuator is provided that can prevent generation of hitting sound due to rattling of an output shaft of a motor. The motor-driven actuator is equipped with a motor with an output shaft, worm attached to the output shaft, and rotation member with a worm wheel engaging with the worm inside a case, wherein a bearing member equipped with a regulating face adjacent to a top end of said output shaft and intergrading by biasing force of a spring in a manner said regulating face pushes the top end of said output shaft into the direction of thrust is provided.
Claims3
A motor-driven actuator comprising:
- a motor with an output shaft, a worm attached to said output shaft, and a rotation member equipped with a worm wheel that mates with said worm inside a case;
- a first bearing member disposed opposingly to a direction of thrust of said output shaft projecting from said motor and equipped with a regulating face to which a front portion of a top end of said output shaft abuts, and shifted by biasing force of a spring so as to push said output shaft toward said motor;
- a second bearing member having an abutting face which abuts a rear end of said output shaft, temporarily housed in said case and a recess which abuts a rear end of said output shaft, housed at a temporary, first position;
- a motor cover to hold said motor at a prescribed position in said case, said motor cover having a fixed portion to prevent said first bearing member from being shifted, integrated into said case, and a bearing holding portion to push said second bearing member from the temporary, first housing position to a second housing position.
1 more element
Dependencies are inferred from the claim text.