Patent ID: 7979949

Claim:
A vehicle wiper device for wiping a surface of a hatch window, which is selectively opened and closed with respect to a vehicle body, the hatch window being selectively opened and closed by rotating with respect to the vehicle body, the device comprising: an actuator mounted on the vehicle body, the actuator including an output shaft, which rotates in a reciprocating manner within a first angle range, the output shaft including a first coupling portion; a support member mounted on the hatch window; a pivot shaft supported by the support member to be rotatable with respect to the hatch window, the pivot shaft extending through the hatch window, the pivot shaft including a second coupling portion, the second coupling portion being drivingly coupled to the first coupling portion when the hatch window is closed, the output shaft being arranged coaxially with the pivot shaft, and the rotation of the output shaft within the first angle range rotating the second coupling portion within the first angle range; a wiper arm supported by the pivot shaft, when the actuator is actuated while the hatch window is closed, the wiper arm oscillates to wipe the surface of the hatch window; a restrictor for restricting the rotation of the second coupling portion, the restrictor restricting the rotation of the second coupling portion to the outside of the first angle range, and the restrictor restricting the rotation of the second coupling portion to the outside the first angle range at both circumferential ends of the first angle range; a first elastic member-arranged at least on one of the restrictor and the second coupling portion, wherein, when the hatch window is open, the first elastic member contacts the second coupling portion between the restrictor and the second coupling portion, and as a result, even if a force less than or equal to a first rotation force acts on the second coupling portion, the second coupling portion is restricted from rotating to the outside of the first angle range; and a second elastic member arranged at least on one of the restrictor and the second coupling portion, a second angle range greater than the first angle range is defined, wherein, when the hatch window is open, the second elastic member contacts the second coupling portion between the restrictor and the second coupling portion, so that the rotation of the second coupling portion to the outside of the second angle range is restricted, and the second elastic member restricts the rotation of the second coupling portion by a force greater than the first rotation force.