Facing assembly of clutch disc

[Detailed Description of the Invention]

[Industrial Application] The present invention relates to the clutch disc used for clutches, such as a car, and relates to the assembly structure of the friction facing particularly.

[Prior art and Object of the Invention] Generally friction facing is provided in the position of the fixed radius from the center of the clutch disc, and the radius (H effect radius) does not change. And if the effective radius of friction facing is set up greatly, and load added to friction facing corresponding to transfer torque can be made comparatively small and will be put in another way, there is an advantage that permission transfer torque can be set up greatly. Since the rotation force of inertia of the whole clutch disc will become small on the other hand if the effective radius of friction facing is set up small, The capacity of the synchronous machine style in a following gearbox becomes small, and, more specifically, there are an advantage of being easy to perform gear change operation with a gearbox, and an advantage that the load added to the synchronous machine style of a gearbox becomes small. With as mentioned above, the conventional structure [ that the disk radial position of friction facing is constant clearly ], It is impossible to fully satisfy both the conditions for making load over friction facing small (that is, permission transfer torque is enlarged) and the conditions for making rotation force of inertia small. The present invention tends to provide the structure in which the conditions of both above can fully be satisfied.

[Means for solving problem] The present invention provides a driven plate in the peripheral part of a clutch disc, and arranges a plurality of friction facing along both the surfaces of a driven plate in the state of standing in a line in the direction of the disk circumference, The buttress plate independent for every friction facing is arranged between friction facing and a driven plate, Friction facing is fixed to one surface of a buttress plate, and the surface of another side of a buttress plate is slidably supported on the surface of a driven plate, The return spring which energizes each buttress plate to the method of the inside of a disk radial direction is provided between a buttress plate and a driven plate, The connection bottle which connects mutually one pair each of buttress plates which adjoin on both sides of a driven plate is provided, The guide rail which each connection bottle passes is provided in a driven plate, and each guide rail is made to incline to the direction of the disk circumference, and a radial direction. The end ahead of [ of each guide rail ] the disk hand of cut is located outside [ disk radial ] a back end, and the facing assembly object of a clutch disc, wherein the above-mentioned connection bottle is guided by the edge of the above-mentioned guide rail at the longitudinal direction is provided. Since according to the above-mentioned structure friction facing is not welded by pressure by power strong at least to an engine flywheel or pressure plate when a clutch is intercepted, the pressure welding power of a buttress plate over a driven plate is small (or it is 0). Therefore, a buttress plate is moved to the method of the inside of a radial direction by operation of a return spring to a driven plate, and friction facing also moves to the position of a radial inner side. In this state, since the rotation force of inertia of the whole clutch disc becomes small, the load of the synchronous machine style in a following gearbox becomes small. In connection operation of a clutch, while an operating state shifts from a full interception state to a perfect connected state, the pressure welding power of a buttress plate over a driven plate is comparatively small, therefore the state where a buttress plate can slide on a driven plate top arises temporarily. Since friction facing welds by pressure to a flywheel or a pressure plate in this slidable state, The power of the clutch hand of cut is added from them to friction facing, and friction facing and a buttress plate move to the clutch hand of cut to a driven plate according to the power. A connection bottle moves the guide rail of a driven plate from the end of a radial inner side to an outside end by this movement, and, as a result, friction facing and a buttress plate move to the method of the outside of a radial direction. Thus, since a clutch is completely connected in the state for which friction facing accounted the position of the radial outside, i.e., the state where the effective radius of friction facing increased, permission transfer torque is thick (the load of friction facing resulting from transfer torque becomes small.).

[example Co Drawing 1 is a partial notch partial front view of a present invention example, and Drawing 2 is a U-U section schematic illustration of Drawing 1. in these figures, annular driven plate 1 provides in the peripheral part of a clutch disc uprightly, and appears in it. A plurality of friction facing 2 is arranged at the both sides of driven plate 1, respectively. Each friction Easing 2 is circularly prolonged in the direction of the disk circumference, and a plurality of friction facing 2 separated few intervals mutually, and is located in a line in the direction of the disk circumference at which [ of driven plate 1 ] side. Between each friction facing 2 and driven plate 1, two buttress plates 3 are arranged in the example of illustration. Two buttress plates 3 each are located in a line in the direction of the disk circumference, friction facing 2 sits down by a fixed state on the surface which is one side, respectively, and the surface of another side is slidably supported by the surface of driven plate 1. Each buttress plate 3 has a near area somewhat rather than one half of the surface area of corresponding friction facing 2. Therefore, load is certainly supportable with driven plate 1 with Push added to friction facing 2 via buttress plate 3 from the hula wheel and pressure plate of the engine which is not illustrated. Each buttress plate 3 and friction facing 2 are being fixed by rivet-like connection bottle 5. Common connection bottle 5 is used for one pair of friction facing 2 and buttress plate 3 which adjoin on both sides of driven plate 1. If it puts in another way, one pair of buttress plates 3 are mutually fixed by connection bottle 5, and friction facing 2 is being fixed to buttress plate 3 using the end of the connection bottle 5. Guide rail 6 into which connection bottle 5 enters is provided in driven plate 1, and as shown in Drawing 2, connection bottle 5 serves as a diameter of a large rather than the portion into which the portion which enters into guide rail 6 fits with buttress plate 3. Guide rail 6 inclines to both the direction of the disk circumference, and a disk radial direction, and end 7 of the front in disk hand of cut R is located in the method of the outside of a radial direction rather than back end 8 so that clearly from Drawing 1. in the example of illustration, guide rail 6 swelled slightly to the method of the outside of a disk radial direction -- it is circular. The above-mentioned buttress plate 3 has projected only the edge of the radial inner side slightly to the inner direction rather than friction facing 2, although the whole is mostly covered with friction facing 2. For example three holes separate an interval in the direction of the disk circumference, and are provided in this projected edge in it, and the end part of return spring 10 is connected with those holes, respectively. Return spring 10 is prolonged from the end by the side of buttress plate 3 in the method of the inside of a radial direction, and disk hand-of-cut back, and the other end is connected with the spring communicating pore of driven plate 1 in the radial inner side rather than buttress plate 3. Therefore, return spring 10 is energizing buttress plate 3 to the method of the inside of a disk radial direction, and hand-of-cut back. According to the above-mentioned structure, when a clutch is intercepted, the pressure welding power of buttress plate 3 as opposed to [ by power strong at least, do not weld friction facing 2 by pressure to an engine flywheel or pressure plate, therefore ] driven plate 1 is small (or it is O). Therefore, return spring 10 moves buttress plate 3 to the method of the inside of a radial direction to driven plate 1 with friction facing 2. In this state, since the rotation force of inertia of the whole clutch disc becomes small, the load of the synchronous machine style in a following gearbox becomes small. In connection operation of a clutch, while an operating state shifts from a full interception state to a perfect connected state, the pressure welding power of buttress plate 3 over driven plate 1 is comparatively small, therefore the state where it can slide on driven plate 1 top produces buttress plate 3 temporarily. Since friction facing 2 welds by pressure to a flywheel or a pressure plate in this state, The power of the clutch hand of cut is added from them to friction facing 2, and friction facing 2 and buttress plate 3 move to clutch hand of cut 2 to driven plate 1 according to the power. Connection bottle 5 moves guide rail 6 from end 8 of a radial inner side to outside end 7 by this movement, and, as a result, friction facing 2 and buttress plate 1 move to the method of the outside of a radial direction. Thus, since a clutch is completely connected in the state for which friction facing 2 accounted the position of the radial outside, i.e., the state where the effective radius of friction facing 2 increased, permission transfer torque becomes large and the load of friction facing 2 resulting from transfer torque becomes small.

Effect Co of [invention Since according to the present invention friction facing 2 can be located in the radial outside at the time of clutch connection and you can make it located in a disk radial inner side at the time of clutch interception as explained above, Two subjects of the improvement in permission transfer torque and reduction of rotation force of inertia can fully be satisfied.

[Brief Description of the Drawings]

Drawing 1 is a partial notch front partial schematic illustration of this example, and Drawing 2 is a ■-■ section schematic illustration of Drawing 1.