| 摘要 |
<p>PROBLEM TO BE SOLVED: To assure a strength of a worm gear and prevent its damage at a geared motor.SOLUTION: This geared motor comprises housings 10, 20, a motor 30 fixed to the housing, a row of gears G rotatably supported at the housing so as to decelerate a motor driving force and transmit it and including a resin worm gear composed of a worm and a worm wheel. The worm gear includes the first worm 40, two-stage gear 50 having the first worm wheel 51 and the second worm 52 integrally formed with the first worm and the second worm wheel 61 engaged with the second worm. The two-stage gear 50 includes one end side shaft 53 and the other end side shaft 54 rotatably supported at bearings of the housing and a reinforcing member 58 arranged to reinforce areas of the first worm wheel and the second worm except one end side shaft and the other end shaft. With this arrangement above, it is possible to prevent cracks, breakage of the two-stage gear and the like and damage of teeth and the like and to attain a desired deceleration action.</p> |
