Clutch system provided with an improved wear-adjustment device

Abstract

The invention relates to a clutch system used for vehicles. The clutch system at least comprises a reaction plate; a friction disc (2); a cover (5) fixed to the reaction plate; a press plate (1); a force transmission element (9) so that the press plate (1) is axially moved relative to the cover; and a wear-compensation device that allows an axial distance d between the work surface of the press plate (1) and a supporting member (13) to be changed, the force transmission element (9) acting on the press plate (1) via the supporting member (13). The wear-compensation device includes a slope part (12) which matches corresponding slope parts to change the axial distance d and is equipped with a gear system (14); a worm (17) and a ratchet (15), wherein the ratchet is provided with teeth, the worm and the ratchet are connected in a rotary manner, and the worm (17) and the gear system engage so as to act on the slope part (12); and a paw (29) fixed to the cover (5) and provided with a control tongue piece (30) that matches the teeth of the ratchet (15), wherein at the stop position of the paw (29), the paw (29) is prevented from facing the ratchet (15) so that a reverse restore applying force is provided to make the paw (29) restored in an elastic manner toward the stop position.

Description

technical field [0001] The invention relates to a clutch system for a motor vehicle, said clutch system being provided with means allowing to compensate for the wear of the friction linings as they wear, hereinafter referred to as wear compensating means. Background technique [0002] Such clutch systems are known in the prior art and are described in particular in the applicant's French patent applications FR2922283, FR2847625 and FR2847626. [0003] A clutch system of this type has a reaction plate, a friction disc, a cover, a pressure plate and a force transmission device such as a diaphragm, said reaction plate being rotationally connected to a drive shaft, for example a crankshaft of an internal combustion engine, said friction disc having friction linings and for coupling with a driven The moving shaft, such as the input shaft of the gearbox, is rotatably connected, the cover is fixed on the reaction plate, the pressure plate is rotatably connected with the cover, and ...

AI Technical Summary

Problems solved by technology

Therefore, the manufacture of pawls is complicated and costly

[0010] In addition, because the stroke of the pawl between the engaged position and the stop position varies with the stroke of the clutch release bearing, the design of the pawl in the prior art must take into account the stroke of the clutch release bearing

However, the stroke of the clutch release bearing varies with different specifications of the clutch system, and the pawl must be dedicated to each specification, and its design cannot be standardized

[0011] Therefore, the solutions in the prior art are not fully satisfactory

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