Clutch mechanism with wear compensation, notably for a motor vehicle, comprising: - a pressure plate actuated by a diaphragm, - wear detection and compensation means able to compensate for wearing of the friction disk, the wear detection and compensation means being interposed between a cover and the pressure plate, the said wear detection and compensation means comprising: - wear compensation means interposed between the diaphragm and the pressure plate, the said wear compensation means comprising at least one compensation member able to move in a determined range and comprising a ramp collaborating with a counterramp formed in the pressure plate so as to adjust the distance between the diaphragm and the pressure plate and compensate for the corresponding wear according to the position of the ramp with respect to the counterramp, - wear detection means able to allow the said mobile compensation member to move in the event of wear and able to prevent such movement when this wear is insufficient, the said detection means comprising at least one detection member able to move, in a determined range, with respect to the mobile compensation member and comprising a ramp collaborating with a counterramp formed in the pressure plate, the mobile compensation member being stressed in such a way that it is urged to move when the said mobile compensation member is released by the diaphragm, - at least one pressing member which forces at least the ramp of the detection member against the associated counterramp, the pressing member being able to collaborate with a fixed thrust surface so as to release the detection member when wear is detected, the mobile detection member being stressed in such a way that it is urged to move and to at least partially compensate for the clearance between it and the pressing member, when the said mobile detection member is released by the pressing member and by the diaphragm, - at least one thrust member designed to move the pressing member away from the detection member and/or from the compensation member in the event of wear, the diaphragm comprising at least an annular part from which fingers extend radially inwards, characterized in that the thrust member is connected to the pressing member and in that the thrust member passes through at least one orifice created in the annular part of the diaphragm. - a pressure plate actuated by a diaphragm, - wear detection and compensation means able to compensate for wearing of the friction disk, the wear detection and compensation means being interposed between a cover and the pressure plate, the said wear detection and compensation means comprising: - wear compensation means interposed between the diaphragm and the pressure plate, the said wear compensation means comprising at least one compensation member able to move in a determined range and comprising a ramp collaborating with a counterramp formed in the pressure plate so as to adjust the distance between the diaphragm and the pressure plate and compensate for the corresponding wear according to the position of the ramp with respect to the counterramp, - wear detection means able to allow the said mobile compensation member to move in the event of wear and able to prevent such movement when this wear is insufficient, the said detection means comprising at least one detection member able to move, in a determined range, with respect to the mobile compensation member and comprising a ramp collaborating with a counterramp formed in the pressure plate, the mobile compensation member being stressed in such a way that it is urged to move when the said mobile compensation member is released by the diaphragm, - at least one pressing member which forces at least the ramp of the detection member against the associated counterramp, the pressing member being able to collaborate with a fixed thrust surface so as to release the detection member when wear is detected, the mobile detection member being stressed in such a way that it is urged to move and to at least partially compensate for the clearance between it and the pressing member, when the said mobile detection member is released by the pressing member and by the diaphragm, - at least one thrust member designed to move the pressing member away from the detection member and/or from the compensation member in the event of wear, the diaphragm comprising at least an annular part from which fingers extend radially inwards, characterized in that the thrust member is connected to the pressing member and in that the thrust member passes through at least one orifice created in the annular part of the diaphragm.