| 摘要 |
PURPOSE:To suppress the infiltration of water, discharge water through a drain hole, and prevent the defective operation of a motor by providing a waterproof wall on the opening section of a bracket at a gap with the outer diameter of a pinion at the retreat position, and providing a drain hole on the bottom section of the waterproof wall. CONSTITUTION:A waterproof wall 21 is provided at a slight gap with the outer diameter of a pinion 12 on the opening section 20a at the lower position of the pinion 12 section of a front bracket 20. An exhaust hole 21a is provided on the bottom section of the waterproof wall 21. A drain hole 20a is provided on the rear lower section of the front bracket 20. The infiltration of water into the front bracket 20 through the opening section 20a is suppressed by the waterproof wall 21, and the infiltrating water is discharged through the exhaust hole 21a. A small quantity of remaining water is discharged through the drain hole 20b. The defective operation of a motor is prevented. |
