JP2007024215A - Clutch disk, clutch disk assembly using it, and clutch device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve bonding strength without lowering cushioning performance in a bonding and fixing type clutch disk. <P>SOLUTION: The clutch disk 32 is provided with a pair of annular friction facings 33 oppositely arranged in the axial direction for friction engagement with a flywheel 2, a first cushioning plate 35 disposed between one of the friction facings 33 and a damper mechanism 31 elastically deformably provided in the axial direction and fixed to the one friction facing 33 by an adhesive, and a second cushioning plate 36 disposed between the other friction facing 33 and the damper mechanism 31 elastically deformably provided in the axial direction and fixed to the other friction facing 33 by the adhesive. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a clutch disk, in particular, a clutch disk having a friction facing fixed thereto, a clutch disk assembly using the clutch disk, and a clutch device.

  The clutch disk assembly is for transmitting torque by friction engagement between the input side rotating body and the output side rotating body. Generally, the clutch disk having a pair of friction facings and the clutch disk are fixed. An input side plate, an output side hub, and a damper portion that elastically connects the input side plate and the output side hub in the circumferential direction.

  When torque is transmitted by the clutch disc assembly, for example, the friction facing is pressed against the engine-side flywheel by the pressure plate of the clutch cover assembly. As a result, the clutch disk is sandwiched between the flywheel and the pressure plate, and the torque input to the flywheel is input to the input side plate via the clutch disk. This torque is transmitted to the output hub via the damper portion and output to the output transmission. Thus, the clutch disc assembly is capable of transmitting torque by the pressure contact of the clutch disc to the flywheel (see, for example, Patent Document 1).

  As the clutch disk described above, one having a plurality of cushioning plates is known in order to mitigate the impact when the clutch is engaged. The cushioning plate is formed by bending a plate-like member into a corrugated shape, and is fixed to a pair of friction facings. The corrugated portion is elastically deformable in the axial direction when the clutch disc is sandwiched between the flywheel and the pressure plate. The elastic deformation of the cushioning plate acts as a cushion, and the impact when the clutch is engaged is alleviated.

  Generally, in this clutch disk, the friction facing and the cushioning plate are connected by a plurality of metal rivets. Accordingly, considering the engagement portion between the friction facing and the rivet, the thickness of the rivet head, the wear amount of the friction facing, etc., the friction facing becomes thicker than necessary, and the weight and cost of the clutch disk increase. Since the rivet is made of metal, the weight of the rivet itself greatly affects the weight of the entire clutch disk. From the above, the rivet-fixed type clutch disc tends to increase in weight and cost.

On the other hand, considering the smooth speed change operation by the transmission, the weight of the clutch disk is preferably small. Therefore, in order to reduce the weight of the clutch disk, an adhesive fixed type clutch disk in which the friction facing and the cushioning plate are fixed with an adhesive has been proposed.
JP 2001-241463 A

  In the bonded and fixed clutch disc, the bonded portion is integrated with the cushioning plate and the friction facing, and the relative motion of both members is restricted, so that the rigidity is increased. Therefore, if the bonding area is set large in consideration of the bonding strength, the cushioning effect of the cushioning plate is reduced. Further, if the bonding area is set small in consideration of the rigidity of the clutch disk, it is difficult to ensure the bonding strength.

  An object of the present invention is to improve adhesive strength without reducing the cushion effect in an adhesively fixed clutch disk.

  The clutch disk according to claim 1 is a clutch disk of a clutch disk assembly for transmitting torque from the input rotating body to the output rotating body by frictional engagement, and is disposed so as to face each other in the axial direction. A pair of annular friction facings for frictional engagement with the body, a first cushioning plate connecting one friction facing to the output rotating body and fixed to one friction facing by an adhesive, and the other The friction facing and the output rotating body are connected, and a second cushioning plate fixed to the other friction facing by an adhesive is provided.

  In this clutch disk, the first and second cushioning plates are respectively provided between the friction facing on one side and the output rotating body so as to be elastically deformable. Therefore, even if the rigidity of the adhesive fixing portion is increased, portions other than the adhesive fixing portion of the first and second cushioning plates are elastically deformed, so that the cushion effect can be ensured regardless of the rigidity of the adhesive portion. Thereby, adhesive strength can be improved, without reducing a cushion effect.

  According to a second aspect of the present invention, there is provided a clutch disk according to the first aspect, wherein the first cushioning plate is provided on the inner peripheral side of the first flat portion and fixed to the one friction facing. It has the 1st fixing | fixed part fixed to the member, and the 1st elastic part which connects a 1st flat part and a 1st fixing | fixed part elastically. The second cushioning plate includes a second flat portion bonded and fixed to one friction facing, a second fixing portion provided on an inner peripheral side of the second flat portion and fixed to a member on the output rotating body side, and a second flat portion And a second elastic part that elastically connects the part and the second fixing part.

  In this clutch disc, since the first and second elastic portions are annular members, the elastic force and strength of the first and second cushioning plates can be ensured.

  According to a third aspect of the present invention, in the clutch disc according to the second aspect, at least one of the first and second elastic portions has a tapered shape.

  In this clutch disk, at least one of the first and second elastic portions acts like a disc spring. Therefore, the elastic force of at least one of the first and second cushioning plates can be ensured. Further, by adjusting the taper angle or the like, the elastic force can be adjusted, and the cushion effect of the clutch disk can be adjusted.

  According to a fourth aspect of the present invention, in the clutch disc according to the third aspect, the first elastic portion is inclined with respect to the rotation plane from the inner peripheral side to the outer peripheral side toward the opposite side to the axial second elastic portion.

  According to a fifth aspect of the present invention, in the clutch disk according to the third or fourth aspect, the second elastic portion is inclined with respect to the rotation plane from the inner peripheral side to the outer peripheral side toward the opposite side of the axial first elastic portion.

  According to a sixth aspect of the present invention, in the clutch disk according to any of the second to fifth aspects, the first elastic portion has an annular first elastic annular portion provided on the outer peripheral side of the first fixing portion.

  According to a seventh aspect of the present invention, in the clutch disc according to the sixth aspect, the first elastic portion further includes a plurality of first elastic protrusions extending radially outward from the first elastic annular portion.

  Since this clutch disk has the first elastic annular portion and the first elastic protrusion, the elastic force of the first elastic portion can be adjusted by changing the shape and combination of both, and the cushion effect Can be adjusted.

  According to an eighth aspect of the present invention, in any one of the second to fifth aspects, the clutch disk has a plurality of first elastic protrusions extending from the first fixed portion to the outside in the radial direction.

  In this clutch disc, the elastic force of the first elastic portion can be adjusted by changing the shape, quantity, etc. of the first elastic protrusion, and the cushion effect can be adjusted.

  A clutch disk according to a ninth aspect further includes an annular first elastic annular portion in which the first elastic portion is fixed to the outer peripheral side of the first elastic protruding portion.

  Since this clutch disk has the first elastic annular portion and the first elastic protrusion, the elastic force of the first elastic portion can be adjusted by changing the shape and combination of both, and the cushion effect Can be adjusted.

  According to a tenth aspect of the present invention, in any one of the second to ninth aspects, the first elastic part has at least one first hole.

  In this clutch disc, the elastic force of the first elastic portion can be adjusted by changing the shape and quantity of the first hole portion, and the cushion effect can be adjusted.

  A clutch disk according to an eleventh aspect of the present invention is the clutch disk according to any one of the second to tenth aspects, wherein the second elastic portion has an annular second elastic annular portion provided on the outer peripheral side of the second fixing portion.

  According to a twelfth aspect of the present invention, in the clutch disk according to the eleventh aspect, the second elastic portion further includes a plurality of second elastic protrusions extending radially outward from the second elastic annular portion.

  Since this clutch disc has the second elastic annular portion and the second elastic protrusion, the elastic force of the second elastic portion can be adjusted by changing the shape and combination of both, and the cushion effect Can be adjusted.

  According to a thirteenth aspect of the present invention, in the clutch disk according to any one of the second to tenth aspects, the second elastic portion has a plurality of second elastic protrusions extending radially outward from the second fixing portion.

  In this clutch disc, the elastic force of the second elastic portion can be adjusted by changing the shape, quantity, etc. of the second elastic protrusion, and the cushion effect can be adjusted.

  A clutch disk according to a fourteenth aspect is the clutch disk according to the thirteenth aspect, further comprising an annular second elastic annular portion in which the second elastic portion is provided on the outer peripheral side of the second elastic protruding portion.

  Since this clutch disk has the second elastic annular portion and the first elastic protrusion, the elastic force of the second elastic portion can be adjusted by changing the shape and combination of both, and the cushion effect Can be adjusted.

  According to a fifteenth aspect of the present invention, in any one of the second to fourteenth aspects, the second elastic portion has at least one second hole portion.

  In this clutch disc, the elastic force of the second elastic portion can be adjusted by changing the shape and quantity of the second hole portion, and the cushion effect can be adjusted.

  A clutch disk according to a sixteenth aspect of the present invention is the clutch disk according to any one of the second to fifteenth aspects, wherein the first flat portion has an annular first annular portion provided on the outer peripheral side of the first elastic portion.

  In this clutch disk, the friction facing can be adhered and fixed to the first cushioning plate over the entire circumference by the first annular portion. Thereby, adhesive strength can be improved compared with the past.

  A clutch disk according to a seventeenth aspect is the clutch disk according to the sixteenth aspect, wherein the first flat portion further includes a plurality of first protrusions extending radially outward from the first annular portion.

  In this clutch disk, by changing the width of the first annular portion, the shape and quantity of the first protruding portion, etc., the bonding range can be limited to various patterns while increasing the bonding area as compared with the conventional one.

  A clutch disk according to an eighteenth aspect of the present invention is the clutch disk according to any one of the second to fifteenth aspects, wherein the first flat portion has a plurality of first protrusions extending radially outward from the first elastic portion.

  Thereby, an adhesion range can be limited to various patterns, making an adhesion area larger than before.

  A clutch disk according to a nineteenth aspect of the present invention is the clutch disk according to the eighteenth aspect, further comprising an annular first annular portion in which the first flat portion is provided on the outer peripheral side of the first protruding portion.

  In this clutch disk, the bonding range can be limited to various patterns while increasing the bonding area as compared with the prior art by changing the shape and quantity of the first annular portion and the first protruding portion.

  A clutch disk according to a twentieth aspect of the present invention is the clutch disc according to any one of the second to nineteenth aspects, wherein the second flat portion has an annular second annular portion provided on the outer peripheral side of the second elastic portion.

  In this clutch disc, the friction facing can be bonded and fixed over the entire circumference by the second annular portion. Thereby, adhesive strength can be improved.

  According to a twenty-first aspect of the present invention, in the twentieth aspect, the second flat portion further includes a plurality of second protrusions extending radially outward from the second annular portion.

  In this clutch disk, by changing the width of the second annular portion and the shape and quantity of the second protruding portion, the bonding range can be limited to various patterns while increasing the bonding area as compared with the conventional case.

  A clutch disk according to a twenty-second aspect includes the second projecting portion according to any one of the second to nineteenth aspects, wherein the second flat portion is formed so as to extend radially outward from the second elastic portion. Yes.

  Thereby, an adhesion range can be limited to various patterns, making an adhesion area larger than before.

  According to a twenty-third aspect of the present invention, the clutch disk according to the twenty-second aspect further includes an annular second annular portion in which the second flat portion is provided on the outer peripheral side of the second projecting portion.

  In this clutch disk, by changing the shape and quantity of the second annular portion and the second projecting portion, the bonding area can be limited to various patterns while increasing the bonding area as compared with the conventional one.

  A clutch disk according to a twenty-fourth aspect is the clutch disk according to any one of the second to twenty-third aspects, wherein the first flat portion is inclined with respect to the rotation plane from the radially inner side to the radially outer side toward the opposite side of the axial second flat portion. ing.

  In this clutch disc, since the first flat portion is inclined with respect to the rotation plane, the first flat portion acts like a disc spring when the clutch is engaged. Therefore, in addition to the axial load generated from the first elastic portion, the axial load generated from the first flat portion acts on the outer peripheral side of the friction facing. As a result, by properly adjusting the taper angle, etc., the axial load acting on the inner and outer sides of the friction facing can be made uniform when the clutch is engaged, preventing uneven wear of the friction facing. can do.

  A clutch disk according to a twenty-fifth aspect is the clutch disk according to any one of the second to twenty-fourth aspects, wherein the second flat portion is inclined with respect to the rotational plane from the radially inner side to the radially outer side toward the opposite side of the axial first flat portion. ing.

  In this clutch disc, since the second flat portion is inclined with respect to the rotation plane, the second flat portion acts like a disc spring when the clutch is engaged. Therefore, in addition to the axial load generated from the second elastic portion, the axial load generated from the second flat portion acts on the outer peripheral side of the friction facing. As a result, by properly adjusting the taper angle, etc., the axial load acting on the inner and outer sides of the friction facing can be made uniform when the clutch is engaged, preventing uneven wear of the friction facing. can do.

  A clutch disk according to a twenty-sixth aspect is the clutch disk according to the twenty-fourth aspect, wherein an inclination angle of the first flat portion with respect to the rotation plane is smaller than an inclination angle of the first elastic portion with respect to the rotation plane.

  A clutch disk according to a twenty-seventh aspect is the clutch disk according to the twenty-fifth aspect, wherein an inclination angle of the second flat portion with respect to the rotation plane is smaller than an inclination angle of the second elastic portion with respect to the rotation plane.

  A clutch disk assembly according to claim 28 is a clutch disk assembly for transmitting torque from an input rotating body to an output rotating body by frictional engagement, and the clutch according to any one of claims 1 to 27. And a damper mechanism disposed between the clutch disk and the output rotator for elastically connecting the clutch disk and the output rotator in the rotational direction.

  A clutch device according to a twenty-ninth aspect is a clutch device for transmitting and interrupting torque from an input rotator to an output rotator, and is coupled to the clutch disk assembly according to the twenty-eighth aspect and the input rotator. A clutch cover, a pressing member that is provided on the clutch cover so as not to rotate relative to the input rotating body, and that presses the first and second friction facings against the input rotating body. A clutch cover assembly having a biasing member for biasing the pressing member toward the input rotating body.

  In the clutch disk according to the present invention, since the first and second cushioning plates have the above-described configuration, the adhesive strength can be improved without reducing the cushion effect.

  Embodiments of the present invention will be described with reference to the drawings.

1. First Embodiment (1) Configuration of Clutch Device FIG. 1 is a schematic longitudinal sectional view of a clutch device 1 in which a clutch disk 32 as a first embodiment of the present invention is adopted, and FIG. 2 is a schematic plan view thereof. OO indicates the rotation center line of the clutch device 1 and the clutch disk assembly 3.

  The clutch device 1 is for transmitting and interrupting torque from an engine (not shown) to a transmission (not shown). As shown in FIGS. 1 and 2, a clutch disk assembly 3 and a clutch cover assembly are provided. It is composed of a solid 4.

  The clutch disk assembly 3 is for transmitting torque by frictional engagement, and includes a spline hub 30, a damper mechanism 31, and a clutch disk 32. The spline hub 30 is disposed on the outer peripheral side of the input shaft 5 of the transmission, and includes a hub 30a and a flange portion 30b. The hub 30 a is a cylindrical member extending in the axial direction, and is spline-engaged with the input shaft 5. The flange portion 30b is a disk-shaped portion that extends radially outward from the outer peripheral portion of the hub 30a.

  The damper mechanism 31 is for elastically connecting the clutch disk 32 and the spline hub 30 in the rotational direction, and is composed of a clutch plate 31a, a retaining plate 31b, and a plurality of coil springs 31c. . The clutch plate 31a and the retaining plate 31b are disk-shaped members disposed so as to sandwich the flange portion 30b in the axial direction, and are connected by a plurality of rivets 31d. The flange portion 30b, the clutch plate 31a, and the retaining plate 31b are formed with a plurality of accommodating portions 30c, 31e, and 31f that are cut out in a window shape, and the respective accommodating portions 30c, 31e, and 31f are coil springs 31c. Are accommodated so as to be elastically deformable in the rotational direction.

  The clutch disk 32 is for transmitting torque by friction engagement, and is connected to the outer periphery of the clutch plate 31a. Details of the clutch disk 32 will be described later.

  The clutch cover assembly 4 is for operating torque transmission by frictional engagement, and mainly includes a clutch cover 41, a pressure plate 42, and a diaphragm spring 43. The clutch cover 41 is an annular member fixed to the flywheel 2 and accommodates the pressure plate 42, the diaphragm spring 43, and the clutch disc assembly 3 therein. The pressure plate 42 is an annular member for holding the clutch disk 32 between the flywheel 2 and is provided so as not to rotate relative to the clutch cover 41 and to be relatively movable in the axial direction.

  The diaphragm spring 43 urges the pressure plate 42 toward the flywheel 2 and is provided so as not to rotate relative to the clutch cover 41 and to be elastically deformable in the axial direction. The diaphragm spring 43 has an annular portion 43b and a plurality of lever portions 43a. The annular portion 43 b is for urging the pressure plate 42 in the axial direction, and the outer peripheral portion is supported by the clutch cover 41. The inner peripheral portion of the annular portion 43 b is in contact with the pressure plate 42. The lever portion 43a is for elastically deforming the annular portion 43b in the axial direction and is a portion extending radially inward from the annular portion 43b. The distal end of the lever portion 43a is supported by the release device 6 so as to be movable in the axial direction.

(2) Detailed Configuration of Clutch Disc 32 FIG. 3 shows a schematic sectional view in the rotational direction of the clutch disc 32 as the first embodiment of the present invention. The clutch disk 32 according to the first embodiment includes a pair of friction facings 33, a first cushioning plate 35, and a second cushioning plate 36.

  The friction facing 33 is a portion that frictionally engages with the flywheel 2 and the pressure plate 42 and is an annular plate formed of a friction material. As shown in FIG. 3, the friction facings 33 are disposed so as to face each other in the axial direction, and a first cushioning plate 35 and a second cushioning plate 36 are disposed between the friction facings 33.

  The first cushioning plate 35 and the second cushioning plate 36 are for connecting the pair of friction facings 33 elastically in the axial direction and relatively non-rotatably to the damper mechanism 31. The outer periphery of the clutch plate 31a Are fixed by a plurality of rivets 31d.

  The first cushioning plate 35 further includes a first flat portion 35a, a first elastic portion 35b, and a first fixing portion 35c, and is formed by bending one plate. The first flat portion 35 a is an annular plate portion that is bonded and fixed to one friction facing 33. In the present embodiment, the first flat portion 35a is disposed perpendicular to the rotation axis. That is, the first flat portion 35a is not inclined with respect to the rotation plane. Between the first flat portion 35a and the friction facing 33, an adhesive layer 38 in which the adhesive is cured is formed. The adhesive layer 38 is formed over the entire surface of the first flat portion 35 a and the friction facing 33. The first elastic portion 35b is an annular portion that is provided on the inner peripheral side of the first flat portion 35a and is fixed to the clutch plate 31a so as to be elastically deformable in the axial direction. The first fixing portion 35c is an annular plate portion provided on the inner peripheral side of the first elastic portion 35b, and is fixed to the outer peripheral portion of the clutch plate 31a by a plurality of rivets 31d.

  The second cushioning plate 36 further includes a second flat portion 36a, a second elastic portion 36b, and a second fixing portion 36c, and is formed by bending one plate. The second flat portion 36 a is an annular plate portion that is bonded and fixed to one friction facing 33. In the present embodiment, the second flat portion 36a is disposed perpendicular to the rotation axis. That is, the second flat portion 36a is not inclined with respect to the rotation plane. An adhesive layer 38 in which the adhesive is cured is formed between the second flat portion 36a and the friction facing 33. The adhesive layer 38 is formed over the entire surface of the second flat portion 36 a and the friction facing 33. The second elastic portion 36b is an annular portion that is provided on the inner peripheral side of the second flat portion 36a and is fixed to the clutch plate 31a so as to be elastically deformable in the axial direction. The second fixing portion 36c is an annular plate portion provided on the inner peripheral side of the second elastic portion 36b, and is fixed to the outer peripheral portion of the clutch plate 31a by a plurality of rivets 31d. In the present embodiment, the first fixing portion 35c and the second fixing portion 36c are fixed so as to overlap one of the clutch plates 31a.

  The first elastic part 35b and the second elastic part 36b have a tapered shape. Specifically, the outer periphery of the first elastic portion 35b is inclined with respect to the rotation plane toward the side opposite to the axial second elastic portion 36b (the right side in FIG. 3). The second elastic portion 36b is inclined with respect to the rotation plane from the inner peripheral side to the outer peripheral side toward the opposite side (left side in FIG. 3) from the axial first elastic portion 5b. More specifically, the first elastic part 35b and the second elastic part 36b are inclined by inclination angles A1 and A2 with respect to the rotation plane. The inclination angles A1 and A2 are set within the ranges of 0 ° <A1 ≦ 40 ° and 0 ° <A2 ≦ 40 °, for example. A constant gap is formed between the first flat portion 35a and the second flat portion 36a in the axial direction. With the above configuration, when the clutch is engaged, the first elastic portion 35b and the second elastic portion 36b act like a disc spring and generate an elastic force.

  In the clutch disk 32, a first cushioning plate 35 and a second cushioning plate 36 are provided between the friction facing 33 on one side and the damper mechanism 31 so as to be elastically deformable. For this reason, the influence of the rigidity of the bonded portion on the elastic force of the first elastic portion 35b and the second elastic portion 36b is reduced. Moreover, the elastic force of both the elastic parts 35b and 36b can be adjusted by adjusting inclination-angle A1, A2, thickness, etc. of the 1st elastic part 35b and the 2nd elastic part 36b. That is, in the clutch disk 32, the cushion effect of the first and second cushioning plates 35 and 36 can be secured and adjusted regardless of the rigidity of the bonded portion. In the clutch disk 32, the first flat portion 35a and the second flat portion 36a are bonded and fixed to the friction facing 33 over the entire circumference. Therefore, the adhesive strength can be improved as compared with the conventional case.

  With the above configuration, the clutch disk 32 can improve the adhesive strength without reducing the cushion effect. Further, the cushion effect can be easily adjusted.

(3) Operation The operation of the clutch device 1 and the clutch disk assembly 3 will be described.

  As shown in FIG. 1, when releasing the clutch, the release device 6 pulls the distal ends of the plurality of lever portions 43a of the diaphragm spring 43 toward the axial transmission side (right side in FIG. 1), and the diaphragm spring 43 moves in the axial direction. Elastically deforms. As a result, the urging force to the pressure plate 42 is released, the clutch disk 32 of the clutch disk assembly 3 is not held between the flywheel 2 and the pressure plate 42, and the coupling of the clutch device 1 is released.

  When the clutch is engaged, the distal end of the lever portion 43a is returned to the axial engine side by the release device 6, and the pressure plate 42 is urged toward the axial engine side by the elastic force of the diaphragm spring 43. As a result, the clutch disk 32 is held between the flywheel 2 and the pressure plate 42, and the first cushioning plate 35 and the second cushioning plate 36 are elastically deformed in the axial direction. Specifically, as shown in FIG. 5A, first, the first elastic portion 35b and the second elastic portion 36b are elastically deformed in the axial direction.

  At this time, since the first cushioning plate 35 and the second cushioning plate 36 are provided so as to be elastically deformable between the friction facings 33 and the damper mechanism 31 on one side, respectively, the rigidity of the bonded portion is set to the first elastic portion 35b and The influence on the elastic force of the second elastic portion 36b is reduced. Thereby, the cushion effect of the 1st and 2nd cushioning plates 35 and 36 is securable irrespective of the rigidity of an adhesion part. In the clutch disk 32, the first flat portion 35a and the second flat portion 36a are bonded and fixed to the friction facing 33 over the entire circumference. Therefore, the adhesive strength can be improved as compared with the conventional case. Thereby, in this clutch disk 32, adhesive strength can be improved, without reducing a cushion effect.

  When the first elastic portion 35b and the second elastic portion 36b are elastically deformed, the first flat portion 35a and the second flat portion 36a abut on each other in the axial direction as shown in FIG. Thus, the first flat portion 35a, the second flat portion 36a, and the adhesive layer 38 are compressed. In this way, torque is transmitted by the clutch disk 32 while absorbing the impact when the clutch is engaged.

2. Second Embodiment As a modification of the first embodiment described above, the following cases are also conceivable. FIG. 6 shows a schematic cross-sectional view in the rotational direction of a clutch disk 132 as a second embodiment of the present invention.

  As shown in FIG. 6, in the clutch disk 132 of the present embodiment, the first flat portion 135a and the second flat portion 136a are inclined with respect to the rotation plane. Specifically, the first flat portion 135a is inclined with respect to the rotation plane from the inner peripheral side to the outer peripheral side toward the opposite side (right side in FIG. 6) from the axial second flat portion 136a. Further, the second flat portion 136a is inclined with respect to the rotation plane from the inner peripheral side to the outer peripheral side toward the side opposite to the axial first flat portion 135a (left side in FIG. 6). More specifically, as shown in FIG. 7, the first flat portion 135a and the second flat portion 136a are formed so as to be inclined by inclination angles B1 and B2 with respect to the rotation plane. The inclination angles B1 and B2 are set within the ranges of 0 ° <B1 ≦ 10 ° and 0 ° <B2 ≦ 10 °, for example. The first elastic portion 135b and the second elastic portion 136b are inclined by inclination angles B1 and B2 with respect to the rotation plane, as in the first embodiment. In consideration of the angle of the friction surface, the inclination angles B1 and B2 are set to be smaller than the inclination angles A1 and A2.

  When the clutch is engaged, the friction facing 133 is held in the axial direction by a flywheel and a pressure plate (not shown). At this time, since the first elastic portion 135b and the second elastic portion 136b on the inner peripheral side of the friction facing 133 are elastically deformed, a larger axial load acts on the inner peripheral side of the friction facing 133 than on the outer peripheral side. Therefore, the surface pressure of the inner peripheral portion of the friction facing 133 becomes larger than the surface pressure of the outer peripheral portion, and the friction facing 133 may be unevenly worn.

  However, in the clutch disk 132, the first flat portion 135a and the second flat portion 136a are inclined with respect to the rotation plane, that is, the first flat portion 135a and the second flat portion 136a also have a tapered shape. The first flat part 135a and the second flat part 136a act like a disc spring. Therefore, in addition to the axial load generated from the first elastic portion 135b and the second elastic portion 136b, the axial load generated from the first flat portion 135a and the second flat portion 136a is present on the outer peripheral side of the friction facing 133. Works. As a result, by appropriately adjusting the inclination angles A1, A2, B1, B2, etc., the axial load acting on the inner peripheral side and the outer peripheral side of the friction facing 133 can be made uniform when the clutch is engaged. Uneven wear of the friction facing 133 can be prevented.

3. Third Embodiment In the above-described embodiment, the first and second elastic portions are annular, but other shapes are also conceivable. FIG. 8 shows a schematic plan view of a clutch disk 232 as a third embodiment of the present invention.

  As shown in FIG. 8, the first cushioning plate 235 according to the present embodiment includes a first flat portion 235a, a first elastic portion 235b, and a first fixing portion 235c. Since the shapes of the first flat portion 235a and the first fixing portion 235c are the same as those in the above-described embodiment, detailed description thereof is omitted.

  The first elastic part 235b is composed of a plurality of first elastic protrusions 235d. Specifically, the first elastic protruding portion 235d is a portion extending radially outward from the annular first fixing portion 235c. An annular first flat portion 235a is provided on the outer peripheral side of the first elastic protrusion 235d. The first flat portion 235a and the first fixing portion 235c are elastically coupled in the axial direction so as to be integrally rotatable by a first elastic protrusion 235d. The first fixing portion 235c is fixed to the outer peripheral portion of the clutch plate 231a by a rivet 231d. The first elastic protrusion 235d is disposed so as to extend radially outward from the clutch plate 231a. The first flat portion 235a is elastically coupled to the clutch plate 231a by the first elastic portion 235b so as to be integrally rotatable. The 1st flat part 235a and the 1st fixing | fixed part 235c are not inclined with respect to a rotating plane like the above-mentioned 1st Embodiment. In addition, the first elastic portion 235b is inclined with respect to the rotation plane in the same manner as in the first embodiment described above. In the present embodiment, since the second cushioning plate 236 has the same shape as the first cushioning plate 235, detailed description thereof is omitted.

  In the clutch disk 232, since the first elastic portion 235b is composed of a plurality of first elastic protrusions 235d, the elastic force of the first elastic portion 235b can be changed by changing the shape and quantity of the first elastic protrusion 235d. Can be adjusted. The elastic force can be similarly adjusted for the second cushioning plate 236. Thereby, with this clutch disc 232, the cushion effect can be adjusted, and the adhesive strength can be improved without reducing the cushion effect.

  Further, as a modification of the third embodiment, a case as shown in FIG. 9 is also conceivable. Specifically, the first fixing portion 235c is not annular but is composed of a plurality of plate portions in the same manner as the first elastic portion 235b. In other words, the first elastic portion 235b and the first fixing portion 235c are integrally configured. Also in this case, the same effect as the case where the 1st fixing | fixed part 235c is cyclic | annular can be acquired.

4). Fourth Embodiment In the third embodiment described above, the first elastic portion 235b is composed of a plurality of first elastic protrusions 235d, but the following embodiments are also conceivable. FIG. 10 shows a schematic plan view of a clutch disk 332 as a fourth embodiment of the present invention.

  As shown in FIG. 10, the first cushioning plate 335 of the present embodiment includes a first flat portion 335a, a first elastic portion 335b, and a first fixing portion 335c. Since the shapes of the first flat portion 335a and the first fixing portion 335c are the same as those in the above-described embodiment, detailed description thereof is omitted.

  The first elastic portion 335b has a first elastic annular portion 335e and a plurality of first elastic protrusions 335d. The first elastic annular portion 335e is an annular portion provided on the outer peripheral side of the annular first fixing portion 335c. The first elastic protrusion 335d is a portion extending radially outward from the first elastic annular portion 335e. In other words, it can be considered that a plurality of holes are formed on the outer peripheral side of the annular first elastic portion 335b. Similar to the first embodiment described above, the first elastic portion 335b is inclined with respect to the plane of rotation. In the present embodiment, since the second cushioning plate 336 has the same shape as the first cushioning plate 335, detailed description thereof is omitted.

  In this clutch disk 332, since the first elastic portion 335b is composed of a plurality of first elastic protrusions 335d, the radial width of the first elastic annular portion 335e, the shape and quantity of the first elastic protrusion 335d, etc. Can be adjusted to adjust the elastic force of the first elastic portion 335b. The elastic force can be similarly adjusted for the second cushioning plate 336. Thereby, with this clutch disk 332, the cushion effect can be adjusted, and the strength of the bonding area can be improved without reducing the cushion effect.

  As a modification of the fourth embodiment, as shown in FIG. 11, a first elastic protrusion 335d is provided on the outer peripheral side of the first fixing part 335c, and the first elastic annular part 335e is a first elastic protrusion. The case where it is provided in the outer peripheral side of 335d is also considered. Also in this case, the same effect can be obtained.

  Furthermore, as a modification of the fourth embodiment, a case where a plurality of first hole portions 335i are formed in the first elastic portion 335b is also conceivable. Specifically, as shown in FIG. 12, a plurality of first hole portions 335i are formed uniformly in the circumferential direction in the first elastic portion 335b. Also in this case, the same effect can be obtained by adjusting the shape and quantity of the first hole 335i. The shape of the first hole 335i is not limited to FIG. 12, and may be another shape (for example, a circle). In addition, the clutch disk 332 shown in FIG.10 and FIG.11 can be obtained by adjusting the position of the 1st hole 335i.

5. Fifth Embodiment In the above-described embodiment, the shape of the first flat portion is annular, but other shapes are also conceivable. FIG. 13 is a schematic plan view of a clutch disk 432 as a fifth embodiment of the present invention.

  As shown in FIG. 13, the first cushioning plate 435 of the present embodiment includes a first flat part 435a, a first elastic part 435b, and a first fixing part 435c. Since the shapes of the first elastic portion 435b and the first fixing portion 435c are the same as those in the above-described embodiment, detailed description thereof is omitted. In the present embodiment, the second cushioning plate 436 has the same shape as the first cushioning plate 435, and thus detailed description thereof is omitted.

  The first flat portion 435a has a plurality of first protrusions 435f. The first protruding portion 435f is a portion that extends radially outward from the annular first elastic portion 435b. The first protrusion 435f and the one friction facing 433 are fixed by an adhesive. In the clutch disk 432, the bonding range can be limited to various patterns while increasing the bonding area as compared with the conventional one by changing the shape and quantity of the first protrusion 435f.

6). Sixth Embodiment In the above-described embodiment, the first flat portion 435a is composed of a plurality of first protrusions 435f, but the following embodiments are also conceivable. FIG. 14 shows a schematic plan view of a clutch disk 532 as a sixth embodiment of the present invention.

  As shown in FIG. 14, the first cushioning plate 535 includes a first flat portion 535a, a first elastic portion 535b, and a first fixing portion 535c. The first flat portion 535a of the present embodiment includes a first annular portion 535g and a plurality of first protruding portions 535h. The first annular portion 535g is an annular portion provided on the outer peripheral side of the annular first elastic portion 535b. The first protrusion 535h is a portion extending radially outward from the first annular portion 535g. In the present embodiment, since the second cushioning plate 536 has the same shape as the first cushioning plate 535, detailed description thereof is omitted.

  In this clutch disk 532, the bonding range is limited to various patterns while increasing the bonding area as compared with the conventional one by changing the radial width of the first annular portion 535g and the shape and quantity of the first protruding portion 435f. Can do.

  As a modified example of the sixth embodiment, as shown in FIG. 15, a first protrusion 535h is provided on the outer peripheral side of the first elastic part 535b, and a first annular part 535g is an outer periphery of the first protrusion 535h. The case where it is provided in the side is also considered. Also in this case, the same effect can be obtained.

7). Seventh Embodiment In the third and fourth embodiments described above, the first flat portion is described as an annular plate portion, the first elastic portion is described as an annular plate portion, a plurality of plate portions, and a combination thereof. . In the fifth and sixth embodiments, the first elastic portion is described as an annular plate portion, the first flat portion as an annular plate portion, a plurality of plate portions, and a combination thereof. However, a combination of the third to sixth embodiments is also conceivable. FIG. 16 is a schematic plan view of a clutch disk 632 as a seventh embodiment of the present invention.

  As shown in FIG. 16, this clutch disk 632 is a combination of the modification of the fourth embodiment (FIG. 10) and the fifth embodiment (FIG. 13). Specifically, the first cushioning plate 635 of the clutch disk 632 includes a first flat portion 635a, a first elastic portion 635b, and a first fixing portion 635c. The first elastic portion 635b has a first elastic annular portion 635e and a first elastic protrusion 335d. The first elastic annular portion 635e has an annular shape as in the third embodiment described above. The first elastic protrusions 635d are a plurality of portions extending radially outward from the first elastic annular portion 635e. The 1st flat part 635a is comprised from the several 1st protrusion part 635h provided in the outer peripheral side of the 1st elastic protrusion part 635d. In the present embodiment, one first protrusion 635 is formed on the outer peripheral side of one first elastic protrusion 635d. In the present embodiment, since the second cushioning plate 636 has the same shape as the first cushioning plate 635, detailed description thereof is omitted. With the above configuration, the clutch disk 632 can obtain the same functions and effects as those of the third and fifth embodiments described above.

  As described above, the clutch disk 632 including the first and second cushioning plates 635 and 636 having various shapes can be obtained by combining all the embodiments described above.

8). Other Embodiments The present invention is not limited to the above-described embodiments, and various modifications or corrections can be made without departing from the scope of the present invention.

(1) Flat part and elastic part The shape and combination of the flat part and the elastic part are not limited to the above-described embodiment, and may be other shapes and combinations. Moreover, although the 1st and 2nd cushioning plate is described as the same shape in above-mentioned embodiment, it is not limited to this, You may have a different shape. Further, in the clutch disk of the embodiment other than the second embodiment, the first and second flat portions may be inclined with respect to the rotation plane from the radially inner side to the radially outer side as in the second embodiment. Even in this case, uneven wear of the friction facing can be prevented. Moreover, you may provide the hole similar to an elastic part also in a flat part. Thereby, an adhesion range can be limited to various patterns, making an adhesion area larger than before.

(2) First and second elastic portions In the above-described embodiment, both the first and second elastic portions have a tapered shape in consideration of the axial load balance between the first cushioning plate and the second cushioning plate. However, it is not limited to this. For example, the first cushioning plate may have a tapered first elastic portion, and the second cushioning plate may be an annular plate member having no tapered portion. In this case, the same effect can be obtained by adjusting the inclination angle, thickness, etc. of the first elastic portion.

(3) 1st and 2nd fixing | fixed part In the above-mentioned embodiment, although the 1st and 2nd fixing | fixed part is being fixed to one of the axial directions of a clutch plate, it is not limited to this. For example, the first fixing portion and the second fixing portion may be fixed so as to sandwich both sides of the clutch plate in the axial direction, that is, the clutch plate. In this case, the gap between the first flat portion and the second flat portion in the axial direction is increased by the thickness of the clutch plate.

(4) Inclination angle In the drawings of the above-described embodiments, the inclination angles A1 and A2 and the inclination angles B1 and B2 are the same angles in the first cushioning plate and the second cushioning plate, respectively, but are not limited thereto. For example, the inclination angles A1 and A2 may be set to different angles.

(5) Type of clutch device Although the pull-type clutch device is described in the above-described embodiment, the present invention is not limited to this. For example, a push-type clutch device may be used.

1 is a schematic longitudinal sectional view of a clutch device 1 in which a clutch disk 32 as a first embodiment of the present invention is employed. 1 is a schematic plan view of a clutch device 1 in which a clutch disk 32 as a first embodiment of the present invention is employed. The cross-sectional schematic of the rotation direction of the clutch disc 32 as 1st Embodiment of this invention. FIG. 4 is a partially enlarged view around a friction facing 33 in FIG. 3. The figure which shows the deformation | transformation state of the clutch disc 32. The cross-sectional schematic of the radial direction of the clutch disc 132 as 2nd Embodiment of this invention. FIG. 7 is a partially enlarged view around the friction facing 33 of FIG. 6. The plane schematic of the clutch disk 232 as 3rd Embodiment of this invention. The plane schematic of the clutch disk 232 as a modification of 3rd Embodiment of this invention. The plane schematic of the clutch disk 332 as 4th Embodiment of this invention. The plane schematic of the clutch disc 332 as a modification of 4th Embodiment of this invention. The plane schematic of the clutch disc 332 as a modification of 4th Embodiment of this invention. The plane schematic of the clutch disk 432 as 5th Embodiment of this invention. The plane schematic of the clutch disk 532 as 6th Embodiment of this invention. The plane schematic diagram of the clutch disk 532 as a modification of 6th Embodiment of this invention. The plane schematic of the clutch disk 632 as 7th Embodiment of this invention.

Explanation of symbols

1 Clutch device 2 Flywheel (input rotating body)
3 Clutch disc assembly 4 Clutch cover assembly 5 Input shaft (output rotating body)
30 spline hub 31 damper mechanism 32 clutch disk 33 friction facing 35 first cushioning plate 35a first flat part 35b first elastic part 35c first fixing part 36 second cushioning plate 36a second flat part 36b second elastic part 36c second Fixed part 38 Adhesive layer A1, A2, B1, B2 Inclination angle

Claims (29)

A clutch disk of a clutch disk assembly for transmitting torque by friction engagement from an input rotating body to an output rotating body,
A pair of annular friction facings disposed axially opposite each other and frictionally engaged with the input rotor;
A first cushioning plate connected to one of the friction facings and the output rotating body, and fixed to the one friction facing by an adhesive;
A second cushioning plate connecting the other friction facing and the output rotating body, and being fixed to the other friction facing by an adhesive;
Clutch disc with The first cushioning plate includes a first flat portion bonded and fixed to the one friction facing, and a first fixing portion provided on an inner peripheral side of the first flat portion and fixed to a member on the output rotating body side. A first elastic part that elastically connects the first flat part and the first fixing part,
The second cushioning plate includes a second flat portion bonded and fixed to the one friction facing, a second fixing portion provided on an inner peripheral side of the second flat portion and fixed to a member on the output rotating body side, And a second elastic part that elastically connects the second flat part and the second fixing part,
The clutch disk according to claim 1. At least one of the first and second elastic portions has a tapered shape.
The clutch disk according to claim 2. The first elastic portion is inclined with respect to the rotation plane from the inner peripheral side to the outer peripheral side toward the opposite side to the second elastic portion in the axial direction.
The clutch disk according to claim 3. The second elastic part is inclined with respect to the plane of rotation from the inner peripheral side to the outer peripheral side toward the opposite side to the first elastic part in the axial direction.
The clutch disk according to claim 3 or 4. The first elastic part has an annular first elastic annular part provided on the outer peripheral side of the first fixed part.
The clutch disk according to any one of claims 2 to 5. The first elastic portion further includes a plurality of first elastic protrusions extending radially outward from the first elastic annular portion.
The clutch disk according to claim 6. The first elastic portion has a plurality of first elastic protrusions extending radially outward from the first fixed portion,
The clutch disk according to any one of claims 2 to 5. The first elastic portion further includes an annular first elastic annular portion provided on the outer peripheral side of the first elastic protrusion.
The clutch disk according to claim 8. The first elastic part has at least one first hole part,
The clutch disk according to any one of claims 2 to 9. The second elastic portion has an annular second elastic annular portion provided on the outer peripheral side of the second fixed portion.
The clutch disk according to any one of claims 2 to 10. The second elastic portion further includes a plurality of second elastic protrusions extending radially outward from the second elastic annular portion.
The clutch disk according to claim 11. The second elastic portion has a plurality of second elastic protrusions extending radially outward from the second fixed portion.
The clutch disk according to any one of claims 2 to 10. The second elastic portion further includes an annular second elastic annular portion provided on the outer peripheral side of the second elastic protrusion.
The clutch disk according to claim 13. The second elastic part has at least one second hole part,
The clutch disk according to any one of claims 2 to 14. The first flat part has an annular first annular part provided on the outer peripheral side of the first elastic part.
The clutch disk according to any one of claims 2 to 15. The first flat portion further includes a plurality of first protrusions extending radially outward from the first annular portion.
The clutch disk according to claim 16. The first flat portion has a plurality of first protrusions extending radially outward from the first elastic portion.
The clutch disk according to any one of claims 2 to 15. The first flat portion further includes an annular first annular portion provided on the outer peripheral side of the first protrusion.
The clutch disk according to claim 18. The second flat part has an annular second annular part provided on the outer peripheral side of the second elastic part,
The clutch disk according to any one of claims 2 to 19. The second flat portion further includes a plurality of second protrusions extending radially outward from the second annular portion.
The clutch disk according to claim 20. The second flat portion has a plurality of second protrusions extending radially outward from the second elastic portion.
The clutch disk according to any one of claims 2 to 19. The second flat portion further includes an annular second annular portion provided on the outer peripheral side of the second protrusion.
The clutch disk according to claim 22. The first flat portion is inclined with respect to the rotation plane from the radially inner side to the radially outer side in the axial direction opposite to the second flat portion.
The clutch disk according to any one of claims 2 to 23. The second flat part is inclined with respect to the rotation plane from the radially inner side to the radially outer side in the axial direction opposite to the first flat part.
The clutch disk according to any one of claims 2 to 24. The inclination angle of the first flat part with respect to the rotation plane is smaller than the inclination angle of the first elastic part with respect to the rotation plane,
The clutch disk according to claim 24. The inclination angle of the second flat part with respect to the rotation plane is smaller than the inclination angle of the second elastic part with respect to the rotation plane.
The clutch disk according to claim 25. A clutch disk assembly for transmitting torque by frictional engagement from an input rotator to an output rotator,
A clutch disk according to any one of claims 1 to 27;
A damper mechanism disposed between the clutch disk and the output rotator, for elastically connecting the clutch disk and the output rotator in a rotational direction;
A clutch disk assembly comprising: A clutch device for transmitting and interrupting torque from an input rotator to an output rotator,
A clutch disk assembly according to claim 28;
A clutch cover coupled to the input rotator, a pressing member provided in the clutch cover so as not to rotate relative to the input rotator, and for pressing the first and second friction facings against the input rotator; and the clutch cover A clutch cover assembly provided with an urging member provided so as to be elastically deformable in an axial direction and urging the pressing member toward the input rotating body;
A clutch device comprising:

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