| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a motor actuator, cost increase of which is suppressed while suppressing generation of abnormal noise due to axial vibration of a gear caused by rotation.SOLUTION: Grooves 31a, 31b are formed in the surface 17a of a pedestal 17 facing the lower end face 26a of a worm wheel 26 to be engaged with a warm 30 fixed to the output shaft of a motor, and the grooves 31a, 31b are filled with grease. The worm wheel 26 tries to vibrate in the axial direction of a shaft 14 upon rotation, but the grease generates an attraction force between the worm wheel 26 and the pedestal 17, thus suppressing vibration in the axial direction. Since the grooves 31a, 31b are recessed simply in the pedestal 17, cost increase of a mold can be suppressed.</p> |
