Patent ID: 6378160
Filing Date: 2002-04-30
Classification: B60S,F16B,F16C,Y10S

Abstract:
A wiper apparatus for a motor vehicle, the motor vehicle having a body, the apparatus comprising:a pivot holder for fixing the wiper apparatus to the body of the motor vehicle; a pivot shaft rotatably penetrating the pivot holder from the inside of the body to the outside of the body, the pivot shaft having a penetrating tip portion and an engaging groove in the penetrating tip portion, wherein the engaging groove has a side surface that is inclined toward the tip portion; a wiper arm fixedly mounted to the penetrating tip portion; a bushing disposed between the pivot holder and the pivot shaft; a flat washer fitted over the pivot shaft and placed against the tip portion of the pivot holder and an end portion of the bushing; and a retaining ring made of elastic material with an annular shape and having a circular cross section, the retaining ring externally fitted from the side of the tip portion of the pivot shaft in the outer circumferential surface of the pivot to be forcedly fitted into the engaging groove to retain the pivot shaft on the pivot holder, each cross-section of the retaining ring contacting only a point on the flat washer, a point on a wall of the engaging groove and a point on the inclined side surface of the penetrating tip portion at corresponding points on an arc of the outer periphery of the circular cross section of the retaining ring.