Clutch system with improved wear compensation

Abstract

The invention relates to a clutch system for a vehicle having at least: a reaction plate; a friction disc (2); a cover (5) fixed to the reaction plate; a pressure plate (1); a force transmission element (9) for Said cover axially moves said pressure plate (1); and a wear compensating device that allows changing the axial distance d between the working surface of the pressure plate (1) and the support (13), through which the force transmission element (9) passes through the support ( 13) Act on the pressing plate (1). The wear compensation device has: a slope component (12), which cooperates with the corresponding slope component to change the axial distance d, the slope component (12) has a gear train (14); a worm (17) and a ratchet (15), and the ratchet is equipped with Teeth, worm and ratchet are connected in rotation, the worm (17) meshes with the tooth train to act on the ramp member (12); the pawl (29), which is fixed on said cover (5), has a control tongue (30 ), the control tongue is matched with the teeth of the ratchet (15), and in the stop position of the ratchet, the ratchet (29) is constrained toward the ratchet (15), so as to provide the ability to make the ratchet (29) stop toward it Reverse return force for elastic return of 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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