Clutch release bearing with fastening means to the actuator

Abstract

The invention discloses a clutch release thrust bearing, comprising: a rolling contact bearing (1) mounted on an operational component (2) with a tubular part (3) and a radial flange (4), and a control unit (18) disposed on the flange for bearing the thrust bearing; a fastening device for an axially fastening control unit and the operational component, which comprises at least two separate metal retaining elements (24) which can be inserted into and retained in an cavity in the operational component (2). Each retaining element (24) comprises a radial heel (25) disposed axially between the radial flange of the operational component and a non-rotating ring (5) of the thrust bearing, an axial retaining strip (26) connected directly on the heel and having the retaining units with a control unit at its free end. The strip (26) traverses an opening in the flange of the operational component.

Description

technical field [0001] The present invention relates to clutch-release thrust bearings. Background technique [0002] A clutch release thrust bearing may comprise an active element having a rolling contact bearing mounted on an operating element such as a guide bush having a tubular portion and a radial flange on which The control part is supported by a thrust bearing such as a guide fork; and a clamping device for axially mounting the control part and the operating element. [0003] Document EP-A-0 462 870 discloses a thrust bearing of this type, in which the clamping means consist of two separate metallic retaining elements which can be fastened by means of a snap provided in a cavity in the bushing is inserted and held in place. Each retaining element has a hook cooperating with the control part. Said retaining elements are fixed to the guide bushings over a substantial part of their length in the shape of cross-shaped metal sheets, and these retaining elements have ra...

AI Technical Summary

Problems solved by technology

[0004] Although such thrust bearings are generally satisfactory, certain disadvantages may arise

[0005] The axial force required to deflect the hook radially during the snap fastening operation is considerable when the claw geometry of the control fork imposes on the short length of the axial branch of the retaining element supporting the hook , which makes this operation more difficult

[0006] Also, for a given radial deformation at the hook end, the short length of the radially flexible hook means that there will be considerable stress concentrations

[0007] If during the operation of assembling the fork and thrust bearing, the fork and thrust bearing are substantially misaligned and positioned incorrectly, the stress exerted by the fork jaws on the hook of the retaining element may cause the retaining element to is destroyed, which impairs the subsequent retention of the axial fastening device

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