CLUTCH RELEASE BEARING DEVICE

摘要

In a clutch release bearing device, an inner ring (12) of a ball bearing (10) is pressed against a diaphragm spring (40) so that a clutch is disengaged. A contact member (20) made of steel is press-fitted to the inner ring (12) so that a convex spherical protruding portion (20b) formed at an end portion of the contact member (20) is brought into contact with the diaphragm spring (40). In addition, a contact position (C) between the protruding portion (20b) and the diaphragm spring (40) is located between an extension line of an inner diameter (D1) of the inner ring (12) and an extension line of an outer diameter (D2) of the inner ring (12).

主权项

1. A clutch release bearing device of an inner ring rotating type, comprising:
a ball bearing comprising:
an inner ring having a raceway along an outer periphery thereof;an outer ring having a raceway along an inner periphery thereof;balls interposed between the inner ring and the outer ring;a cage configured to hold the balls at predetermined intervals in a circumferential direction of the cage; anda sealing device configured to seal a space between the inner ring and the outer ring; a contact member configured to be held in contact with a diaphragm spring; a cover configured to hold the outer ring of the ball bearing; and an elastic member interposed between the outer ring, wherein the contact member is made of steel, and comprises:
a cylindrical portion configured to be press-fitted to an inner periphery of the inner ring; anda protruding portion formed at an end portion on one side of the cylindrical portion, the protruding portion comprises an end portion having a convex circular-arc shape in cross-section, and has an outer diameter that is larger than an outer diameter of the cylindrical portion, and wherein a contact position between the protruding portion and the diaphragm spring is arranged between an extension line of an inner diameter of the inner ring and an extension line of an outer diameter of the inner ring.