| 摘要 |
PROBLEM TO BE SOLVED: To enhance stop position accuracy while reducing the size, weight and cost.SOLUTION: Since a recess 33e for passing a second contact plate, as a worm wheel 32 rotates, is provided at a part of the outer periphery 33a of a switching plate 33, rotation angle &bgr;° of the worm wheel 32 can be reduced for the distance L1(e.g., 3.0 mm), the second contact plate advances in the recess 33e by inertia, and thereby variation is less likely to occur in the stop position of the worm wheel 32 than conventional one. Consequently, not only the size, weight and cost of a rear wiper motor can be reduced, but also the stop position accuracy of the worm wheel 32 can be enhanced. |
