| 摘要 |
PROBLEM TO BE SOLVED: To obtain driving equipment in which noise is reduced. SOLUTION: A case for driving equipment is constituted of a lower case 21 and an upper case stuck on the lower case 21. A DC motor and a reduction gear, which decelerates and outputs the rotation of the DC motor at a prescribed speed reduction ratio are accommodated in the case. The DC motor is fixed to the lower case 21, and a rib 24, having a recessed part 24a into which the tip of an output shaft 2 of the DC motor is inserted, is protruded from the lower case 21. A slit groove 24b, stretching in the direction almost perpendicular to the axial direction of the output shaft 2, is formed in the rib 24. In both end portions of the bottom of the slit trench 24b, stepped parts 24c which is higher than the central part by one step are formed. Inside the slit groove 24b, a wire spring is arranged bridging both of the stepped parts 24c, and pressed and bent downward in figure by the output shaft 2. Through the spring restoring force of the wire spring 4, the output shaft 2 is pressed.
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