| 摘要 |
PROBLEM TO BE SOLVED: To prevent a link pivot part of an arm support from being soaked with water, in a waterproof structure of an arm support for constituting a wiper arm. SOLUTION: In this waterproof structure, a first and second link pivot parts J1, J2 are arranged on the base end of an arm support 2, a first and second guide passages 11, 12 are formed between the first and second link pivot parts J1, J2, and a third guide passage 13 is formed above the second link pivot part J2. Locking claws for mounting a cover body, as drop guide pieces are arranged on right ends of the first, second and third guide passages 11, 12 and 13 so as to be faced to one another, and water on the front surface of the arm support 2 is actively discharged to the window surface side.
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