| 摘要 |
<p>A friction clutch (10) having a housing (12) with a pressure plate (18) which is arranged in a rotationally conjoint manner and so as to be axially displaceable to a limited extent relative to said housing, which pressure plate can, by a lever system (16) supported on the housing, be displaced axially relative to a counterpressure plate, arranged fixedly with respect to the housing, so as to exert a bracing action on friction linings of a clutch disc, wherein in the event of a spacing, formed when the friction linings are braced, between the pressure plate and counterpressure plate being undershot, positive locking is generated between a pinion (26), said pinion being connected to a spindle of a spindle drive (24) which is arranged on the pressure plate and which serves for the rotational drive of an adjusting ring (22) arranged between the pressure plate and the lever system, and a drive pawl (28) fastened to the housing elastically under preload in the direction of the pressure plate, and said positive locking is eliminated during an actuating movement of the pressure plate relative to the housing after a rotation of the pinion by means of the drive pawl, wherein an axial travel of the drive pawl relative to the pinion is delimited by means of the adjusting ring with a contact surface and with a spacer arranged on the housing, wherein the spacer can make contact with the contact surface over a substantially axial adjustment travel of the adjusting ring, characterized in that the spacer runs through a cutout, formed as a passage, of the lever system to a point of abutment against the contact surface, wherein the contact surface is formed as a base of a cutout which is arranged in a surface, arranged opposite the pressure plate, of the adjusting ring and which is in the form of a base depression. In this way, it is possible to permit an improvement in the accuracy of the wear readjustment and, in so doing, to minimize the required installation space.</p> |
