To enhance durability of a wiper device for a vehicle by preventing rust of a connecting pin.
A four-node link mechanism is constituted by rotatably connecting one end of a driving link 31 having the other end rotatably supported on a vehicle body to an arm head 33 by the first connecting pin 41 and rotatably connecting one end of a control link 32 having the other end rotatably supported on the vehicle body to the arm head 33 by a second connecting pin 42. A first recessed part 61 for storing one end of the first connecting pin 41 and a second recessed part 62 for storing one end of the second connecting pin 42 are provided on a surface of the arm head 33. The recessed parts 61 and 62 are closed by a cover 63 to make a waterproof structure. The arm head 33 is provided with a first drain hole 66 opened in the first recessed part 61 and a second drain hole 67 opened in the second recessed part 62 so that a wiper arm 14b on an AS side may be located on a lower side in relation to the connecting pins 41 and 42 when the wiper arm 14b is located at a stop position.
Yoshitaka Kozuka
Akiko Tsutsui
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