JP5131369B2 - Torque fluctuation absorber - Google Patents

Description

  The present invention relates to a torque fluctuation absorber.

  For example, in a hybrid drive device including an engine and an electric motor as a power source, the torque fluctuation absorber is provided on the output shaft of the engine or / and the electric motor, and absorbs the torque fluctuation caused by the engine and the electric motor ( Suppression). As a basic configuration of the torque fluctuation absorber, a flywheel connected to the crankshaft of the engine, a limiter portion including a friction material frictionally engaged with the flywheel, and a limiter portion on the outer peripheral side and an inner peripheral side And a damper portion connected to the input shaft of the transmission. The following is a conventional technique for such a torque fluctuation absorber.

  As a conventional example 1, there is provided a torque fluctuation absorbing device provided with a pinching mechanism for pinching a friction material in a frictional engagement state by pinching the friction material in the axial direction of the drive shaft before the damper portion is attached to the flywheel. Yes (see Patent Document 1). According to Conventional Example 1, the torque fluctuation absorbing device can be transported without exposing the friction material of the limiter portion, and dust, oil, and the like can be reduced as much as possible to the friction material. .

  Conventional example 2 includes a torque fluctuation absorber in which a bearing is disposed between a crankshaft and a plate in a damper portion, and a torque fluctuation in which a bush is disposed between a hub of a driven plate in the damper portion and a drive plate. There is an absorption device (see Patent Document 2). According to the second conventional example, the plates in the flywheel and the damper part are concentric by the bearing and the bush, and it is possible to prevent the limiter part from being eccentric when assembled.

JP 2003-194095 A Japanese Patent No. 3683165

  By the way, when the limiter part is activated (when slipping occurs between the flywheel and the friction material), the damper part may be eccentric. However, in the conventional example 1, the eccentricity is reduced. It was difficult to do. In addition, since the torque fluctuation absorbing device does not have an opportunity to separate the friction surface and the mating surface unlike the clutch device or the like, in the conventional example 1, the requirement for assembly accuracy is severe.

  In Conventional Example 2, the plates in the flywheel and damper are concentric by the bearings and bushes, and the occurrence of eccentricity in the limiter can be reduced. However, the addition of bearings and bushes is disadvantageous in terms of space and cost reduction. There is a risk.

  The main subject of this invention is reducing generation | occurrence | production of eccentricity of a damper part, reducing space and cost.

  In one aspect of the present invention, a limiter portion in which a friction material fixed to a lining plate is sandwiched between a cover plate and a pressure plate, and a damper portion that rotates integrally with the lining plate and the friction material and absorbs torque fluctuations The one or both of the cover plate and the pressure plate regulates the eccentricity of the damper portion when the friction material slides with the cover plate and the pressure plate. The friction material is guided to the above.

  In the torque fluctuation absorber according to the present invention, the guide portion is a convex portion protruding toward the friction material on the friction surface with the friction material, and the convex portion is set over the entire circumference of the friction surface. The friction material preferably has a concave portion corresponding to the convex portion.

  In the torque fluctuation absorber according to the aspect of the invention, it is preferable that the friction material has a taper portion around an outer peripheral corner portion, and the guide portion corresponds to the taper portion of the friction material.

  In the torque fluctuation absorber according to the present invention, both the friction surfaces of the friction material are configured such that the distance between the friction surfaces decreases toward the outer periphery, and the friction surfaces of the cover plate and the pressure plate are formed of the friction material. It is preferable to be configured to correspond to each friction surface.

  According to the present invention (Claim 1-4), it is possible to suppress the eccentricity of the damper portion while reducing the space and the cost by regulating the eccentric amount of the damper portion on the friction surface of the limiter portion. Become.

It is the notch top view which showed typically the structure of the torque fluctuation absorber which concerns on Embodiment 1 of this invention. It is sectional drawing between XX 'of FIG. 1 which showed typically the structure of the torque fluctuation absorber which concerns on Embodiment 1 of this invention. It is the partial front view which showed typically the structure of the cover plate in the torque fluctuation absorber which concerns on Embodiment 1 of this invention. It is sectional drawing between YY 'of FIG. 3 which showed typically the structure of the cover plate in the torque fluctuation absorber which concerns on Embodiment 1 of this invention. It is the fragmentary front view which showed typically the structure of the cover plate in the torque fluctuation absorber which concerns on Embodiment 2 of this invention. It is sectional drawing between YY 'of FIG. 5 which showed typically the structure of the cover plate in the torque fluctuation absorber which concerns on Embodiment 2 of this invention. It is sectional drawing which showed typically the structure of the modification of the cover plate in the torque fluctuation absorber which concerns on Embodiment 2 of this invention. It is the fragmentary front view which showed typically the structure of the cover plate in the torque fluctuation absorber which concerns on Embodiment 3 of this invention. It is the fragmentary sectional view which showed typically the structure of the limiter part in the torque fluctuation absorber which concerns on Embodiment 4 of this invention. It is the fragmentary top view which showed typically the structure of the friction counterpart material of the limiter part in the torque fluctuation absorber which concerns on Embodiment 4 of this invention. It is the fragmentary sectional view which showed typically the structure of the modification of the limiter part in the torque fluctuation absorber which concerns on Embodiment 4 of this invention. It is the fragmentary sectional view which showed typically the structure of the limiter part in the torque fluctuation absorber which concerns on Embodiment 5 of this invention. It is the fragmentary sectional view which showed typically the structure of the modification of the limiter part in the torque fluctuation absorber which concerns on Embodiment 5 of this invention. It is a partial top view when it sees from the arrow A of FIG. 13 which showed typically the structure of the modification of the limiter part in the torque fluctuation absorber which concerns on Embodiment 5 of this invention. It is the fragmentary sectional view which showed typically the structure of the lining plate in the torque fluctuation absorber which concerns on Embodiment 6 of this invention, and its periphery. It is the fragmentary sectional view which showed typically the modification 1 of the structure of the lining plate and its periphery in the torque fluctuation absorber which concerns on Embodiment 6 of this invention. It is the fragmentary sectional view which showed typically the structure of the modification 2 of the lining plate in the torque fluctuation absorber which concerns on Embodiment 6 of this invention. It is the fragmentary sectional view which showed typically the structure of the lining plate and its periphery in the torque fluctuation absorber which concerns on Embodiment 7 of this invention. It is the fragmentary sectional view which showed typically the modification 1 of the structure of the lining plate in the torque fluctuation absorber which concerns on Embodiment 7 of this invention, and its periphery. It is the fragmentary sectional view which showed typically the modification 2 of the structure of the lining plate and its periphery in the torque fluctuation absorber which concerns on Embodiment 7 of this invention. It is the fragmentary sectional view which showed typically the modification 3 of the structure of the lining plate in the torque fluctuation absorber which concerns on Embodiment 7 of this invention, and its periphery. It is the fragmentary sectional view which showed typically the modification 4 of the structure of the lining plate in the torque fluctuation absorber which concerns on Embodiment 7 of this invention, and its periphery. It is the fragmentary sectional view which showed typically the modification 5 of the structure of the lining plate in the torque fluctuation absorber which concerns on Embodiment 7 of this invention, and its periphery. It is the fragmentary sectional view which showed typically the structure of the lining plate in the torque fluctuation absorber which concerns on Embodiment 8 of this invention, and its periphery. It is the fragmentary sectional view which showed typically the structure of the lining plate in the torque fluctuation absorber which concerns on Embodiment 9 of this invention, and its periphery. It is the fragmentary sectional view which showed typically the structure of the limiter part in the torque fluctuation absorber which concerns on Embodiment 9 of this invention. It is process drawing which showed typically the manufacturing method of the assembly of the lining plate and friction material in the torque fluctuation absorber which concerns on Embodiment 9 of this invention. It is (A) partial front view (B) sectional drawing which showed typically the manufacturing method of the assembly of the lining plate and friction material in the torque fluctuation absorber which concerns on Embodiment 9 of this invention. It is the fragmentary sectional view which showed typically the structure of the limiter part in the torque fluctuation absorber which concerns on Embodiment 10 of this invention. It is the fragmentary sectional view which showed typically the structure of the modification 1 of the limiter part in the torque fluctuation absorber which concerns on Embodiment 10 of this invention. It is the fragmentary sectional view which showed typically the structure of the modification 2 of the limiter part in the torque fluctuation absorber which concerns on Embodiment 10 of this invention. It is the fragmentary sectional view which showed typically the structure of the limiter part in the torque fluctuation absorber which concerns on Embodiment 11 of this invention. It is the fragmentary sectional view which showed typically the structure of the modification of the limiter part in the torque fluctuation absorber which concerns on Embodiment 11 of this invention.

(Embodiment 1)
A torque fluctuation absorber according to Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 is a cut-away plan view schematically showing the configuration of the torque fluctuation absorber according to Embodiment 1 of the present invention. 2 is a cross-sectional view taken along the line XX ′ of FIG. 1 schematically showing the configuration of the torque fluctuation absorber according to Embodiment 1 of the present invention. In FIG. 1, the bolt 28 is omitted.

  The torque fluctuation absorber 1 according to the first embodiment is provided on an output shaft (not shown) of an engine (not shown) in a hybrid drive device, for example, and an engine (not shown) and an electric motor ( It is a device that absorbs (suppresses) fluctuating torque due to not shown. The torque fluctuation absorbing device 1 has a torsional buffer function, and includes a hub member 3, a side plate 4, a side plate 5, a thrust member 6, a disc spring 7, an intermediate plate 8, a disc spring 9, and a control. Plate 10, disc spring 11, thrust member 12, thrust member 13, control plate 14, thrust member 15, pin member 16, spring seat 17, spring seat 18, coil spring 19, elastic Member 20, rivet 21, lining plate 22, friction material 23, friction material 24, rotation member 25, support plate 26, cover plate 27, bolt 28, pressure plate 29, and disc spring 30 And a bolt 31.

  The hub member 3 is a member that is spline-engaged with, for example, a rotating shaft (not shown) of an electric motor (not shown) on the radially inner side, and is a component part of the damper portion. The hub member 3 has a flange portion 3a extending outward in the radial direction. The flange portion 3 a has a window portion for accommodating the coil spring 19, the spring seats 17, 18, and the elastic member 20 at an intermediate portion, and a circumferential end surface of the window portion is in contact with and away from the spring seats 17, 18. It touches as possible. The flange portion 3a is slidably in contact with the thrust member 12 on the side plate 4 side surface. The flange portion 3a is slidably in contact with the thrust member 15 on the side plate 5 side surface. The flange portion 3 a has a window portion 3 b for inserting the pin member 16. The window portion 3b is formed larger than the diameter of the intermediate portion of the pin member 16, and guides the relative rotation between the flange portion 3a and the pin member 16.

  The side plate 4 is an annular member formed in a predetermined shape, and is a component part of the damper portion. The side plate 4 is arranged on the right side in the axial direction of the flange portion 3a (the right side in FIG. 2). The side plate 4 has a plurality of concave portions at the inner peripheral end portion, and the rotation preventing portion 6a of the thrust member 6 is attached to the concave portion, and is configured to be relatively unrotatable and axially movable with respect to the thrust member 6. Yes. The side plate 4 is in contact with one end of the disc spring 9 at the surface on the flange portion 3a side. The side plate 4 has a hole portion 4 a for inserting the drop prevention portion 6 b of the thrust member 6 on the outer side in the radial direction from the contact portion with the disc spring 9. The side plate 4 has a window portion for accommodating the spring seats 17 and 18, the coil spring 19, and the elastic member 20 at an intermediate portion, and a circumferential end surface of the window portion is in contact with and away from the spring seats 17 and 18. It touches as possible. The side plate 4 is fixed by a rivet 21 together with the side plate 5 and the lining plate 22 on the radially outer side than the coil spring 19.

  The side plate 5 is an annular plate member formed in a predetermined shape, and is a component part of the damper portion. The side plate 5 is arranged on the left side in the axial direction of the flange portion 3a (left side in FIG. 2). The side plate 5 is in contact with the thrust member 13 in the vicinity of the inner periphery of the inner peripheral end portion or the flange portion 3a side surface. The side plate 5 has a hole for making it non-rotatable and axially movable with respect to the thrust member 13, and a rotation stopper for the thrust member 13 is mounted in the hole. The side plate 5 has a window portion for accommodating the spring seats 17 and 18, the coil spring 19, and the elastic member 20 at an intermediate portion, and the circumferential end face of the window portion is in contact with and separated from the spring seats 17 and 18. It touches as possible. The side plate 5 is fixed by a rivet 21 together with the side plate 4 and the lining plate 22 on the radially outer side of the coil spring 19.

  The thrust member 6 is disposed on the outer periphery of the hub member 3 between the disc spring 7 and the control plate 10 and is slidably in contact with the control plate 10. The thrust member 6 is urged toward the control plate 10 by a disc spring 7. The thrust member 6 is provided at a portion extending toward the side plate 4 on the inner periphery so that the thrust member 6 cannot be rotated relative to the side plate 4, the disc spring 7, the intermediate plate 8, and the disc spring 9 and can move in the axial direction. It has a rotation prevention part 6a. The thrust member 6 has a drop prevention portion 6b that extends through the hole portion 4a of the side plate 4. The removal preventing portion 6b is formed with a claw for preventing the removal from the side plate 4.

  The disc spring 7 is arranged on the outer periphery of the thrust member 6 and between the thrust member 6 and the intermediate plate 8. The disc spring 7 biases the thrust member 6 toward the control plate 10 side. The disc spring 7 has a concave portion corresponding to the anti-rotation portion 6a of the thrust member 6 at the inner peripheral end portion, and the anti-rotation portion 6a is attached to the concave portion, and is not relatively rotatable with respect to the thrust member 6 and moves in the axial direction. It is configured to be possible.

  The intermediate plate 8 is a ring-shaped member disposed on the outer periphery of the thrust member 6 and between the disc spring 7 and the disc spring 9. The intermediate plate 8 receives the bias of the disc spring 9 and acts to push the disc spring 7 toward the thrust member 6 side. The intermediate plate 8 has a concave portion corresponding to the anti-rotation portion 6a of the thrust member 6 at the inner peripheral end portion, and the anti-rotation portion 6a is attached to the concave portion so that the intermediate plate 8 cannot rotate relative to the thrust member 6 and moves in the axial direction. It is configured to be possible.

  The disc spring 9 is disposed on the outer periphery of the thrust member 6 and between the intermediate plate 8 and the side plate 4. The disc spring 9 biases the disc spring 7 toward the control plate 10 via the intermediate plate 8. The disc spring 9 has a concave portion corresponding to the anti-rotation portion 6a of the thrust member 6 at the inner peripheral end portion, and the anti-rotation portion 6a is attached to the concave portion, and is not rotatable relative to the thrust member 6 and moves in the axial direction. It is configured to be possible.

  The control plate 10 is a ring-shaped plate disposed on the outer periphery of the thrust member 12 and between the disc spring 11 and the thrust member 6. The control plate 10 is urged toward the thrust member 6 by the disc spring 11 and slidably contacts the thrust member 6. The control plate 10 has a recessed portion corresponding to the rotation preventing portion of the thrust member 12 at the inner peripheral end portion, and the rotation preventing portion of the thrust member 12 is mounted in the recessed portion, and is not rotatable relative to the thrust member 12 and has a shaft. It is configured to be movable in the direction. The control plate 10 is caulked and fixed to the pin member 16 in the vicinity of the outer peripheral end portion, and is configured integrally with the control plate 14 via the pin member 16.

  The disc spring 11 is disposed on the outer periphery of the thrust member 12 and between the control plate 10 and the thrust member 12. The disc spring 11 biases the control plate 10 toward the thrust member 6 side. The disc spring 11 has a concave portion corresponding to the rotation preventing portion of the thrust member 12 at the inner peripheral end portion, and the rotation preventing portion of the thrust member 12 is mounted in the concave portion, and is not rotatable relative to the thrust member 12 and has a shaft. It is configured to be movable in the direction.

  The thrust member 12 is disposed on the outer periphery of the hub member 3 and between the disc spring 11 and the flange portion 3a. The thrust member 12 is urged toward the flange portion 3a by the disc spring 11, and is in slidable contact with the flange portion 3a. The thrust member 12 has a rotation preventing portion for making it relatively non-rotatable and axially movable with respect to the disc spring 11 and the control plate 10 at a portion extending toward the thrust member 6 on the inner periphery.

  The thrust member 13 is disposed on the outer periphery of the hub member 3 and between the side plate 5 and the control plate 14, and slidably contacts the control plate 14. The thrust member 13 extends to the side plate 5 side on the inner periphery. The thrust member 13 has a detent portion at a position corresponding to the hole portion formed in the side plate 5, and the detent portion is attached to the hole portion of the side plate 5, and cannot rotate relative to the side plate 5. And it is comprised so that an axial direction movement is possible.

  The control plate 14 is a ring-shaped plate disposed on the outer periphery of the hub member 3 and between the thrust member 13 and the thrust member 15. The control plate 14 is slidably in contact with the thrust member 13 and the thrust member 15. The control plate 14 is caulked and fixed to the pin member 16 in the vicinity of the outer peripheral end portion, and is configured integrally with the control plate 10 via the pin member 16.

  The thrust member 15 is disposed on the outer periphery of the hub member 3 and between the control plate 14 and the flange portion 3a. The thrust member 15 is slidably in contact with the control plate 14 and the flange portion 3a.

  The pin member 16 is a member for fixing the control plate 10 and the control plate 14 together. A control plate 14 is caulked and fixed to the pin member 16 at the end on the side plate 5 side. The control plate 10 is caulked and fixed to the pin member 16 at the end on the side plate 4 side. The pin member 16 has a large diameter at the intermediate portion, is not fixed to the flange portion 3a, and can move within the window portion 3b formed in the flange portion 3a.

  The spring seats 17 and 18 are components of the damper part, and are accommodated in a window part formed in the side plate 4, the side plate 5, and the flange part 3 a, and between the window part and the end part of the coil spring 19. It is arranged in.

  The coil spring 19 is a component part of the damper portion, is accommodated in a window portion formed in the side plate 4, the side plate 5, and the flange portion 3a, and is in contact with spring seats 17 and 18 disposed at both ends. . The coil spring 19 contracts when the side plate 4, the side plate 5, and the flange portion 3 a move relative to each other, and absorbs shock due to the rotational difference between the side plate 4, the side plate 5, and the flange portion 3 a.

  The elastic member 20 is a component part of the damper portion, and is disposed on the inner peripheral side of the coil spring 19. The elastic member 20 comes into contact with the two spring seats 17 and 18 that face each other when the coil spring 19 contracts. The shock due to the rotational difference between the side plate 5 and the flange portion 3a is absorbed.

  The rivet 21 is a member for fixing the side plate 4, the side plate 5, and the lining plate 22 together.

  The lining plate 22 is an annular disk member fixed by the rivet 21 together with the side plate 4 and the side plate 5 between the side plate 4 and the side plate 5, and is a component part of the limiter unit that rotates integrally with the damper unit. It is. The lining plate 22 has a radially outer portion extending between the cover plate 27 and the pressure plate 29, and friction materials 23 and 24 are fixed to both surfaces of the radially outer portion by rivets (not shown). .

  The friction material 23 is an annular member that is disposed between the lining plate 22 and the cover plate 27 and is fixed to the lining plate 22 by a rivet (not shown), and is a component part of the limiter portion that rotates integrally with the damper portion. It is. The friction material 23 is slidably in contact with the cover plate 27 at the friction surface.

  The friction member 24 is an annular member that is disposed between the lining plate 22 and the pressure plate 29 and is fixed to the lining plate 22 by a rivet (not shown), and is a component part of the limiter unit that rotates integrally with the damper unit. It is. The friction material 24 is slidably in contact with the pressure plate 29 on the friction surface.

  The rotating member 25 is, for example, an annular member fixed by a bolt 31 to a rotating shaft (not shown) of an engine (not shown). The rotating member 25 has a screw hole that is screwed into the bolt 28 at a portion near the outside in the axial direction. The rotating member 25 is in contact with the support plate 26.

  The support plate 26 is an annular plate member formed in a predetermined shape. The support plate 26 is disposed between the rotating member 25 and the cover plate 27 in the vicinity of the outer periphery, fixed to the cover plate 27 by rivets (not shown), and fixed to the rotating member 25 together with the cover plate 27 by bolts 28. ing. The support plate 26 has an opening 26 a at a position corresponding to the convex portion 29 a of the pressure plate 29. The opening 26 a is configured so as not to rotate relative to the pressure plate 29 and to move in the axial direction. The support plate 26 is separated from the cover plate 27. The support plate 26 is in contact with one end of the disc spring 30 on the surface on the cover plate 27 side.

  The cover plate 27 is an annular plate member formed in a predetermined shape, and is a component part of the limiter portion. The cover plate 27 is disposed on the opposite surface of the support plate 26 on the rotating member 25 side in the vicinity of the outer periphery. The cover plate 27 has a bolt hole 27d through which a bolt 28 is inserted and a rivet hole 27e through which a rivet (not shown) is inserted in an outer peripheral mounting portion (27c in FIG. 3) attached to the rotating member 25. The cover plate 27 is fixed to the support plate 26 by rivets (not shown), and is fixed to the rotating member 25 together with the support plate 26 by bolts 28. The cover plate 27 is separated from the support plate 26 on the inner peripheral side. The cover plate 27 is slidably in contact with the friction material 23 and is a friction counterpart material with respect to the friction material 23. The cover plate 27 has a plurality of holes 27a for enabling elastic deformation at a portion between a friction portion (27b in FIG. 3) and a mounting portion (27c in FIG. 3) that friction with the friction material 23. The detailed configuration of the cover plate 27 will be described later.

  The bolt 28 is a member for fixing the support plate 26 and the cover plate 27 to the rotation member 25, and is inserted into holes formed in the support plate 26 and the cover plate 27 and screwed with the rotation member 25.

  The pressure plate 29 is an annular member disposed between the disc spring 30 and the friction material 24, and is a component part of the limiter unit. The pressure plate 29 is urged toward the friction material 24 by a disc spring 30. The pressure plate 29 has a convex portion 29a at the outer peripheral end. The convex portion 29 a is configured to be relatively unrotatable and movable in the axial direction with respect to the opening portion 26 a of the support plate 26. The pressure plate 29 is slidably in contact with the friction material 24 and is a friction mating material for the friction material 24.

  The disc spring 30 is a member that is disposed between the support plate 26 and the pressure plate 29, biases the pressure plate 29 toward the friction material 24, and is a component part of the limiter unit.

  Next, a detailed configuration of the cover plate in the torque fluctuation absorber according to Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 3 is a partial front view schematically showing the configuration of the cover plate in the torque fluctuation absorber according to Embodiment 1 of the present invention. 4 is a cross-sectional view taken along the line YY ′ of FIG. 3 schematically showing the configuration of the cover plate in the torque fluctuation absorber according to Embodiment 1 of the present invention.

  The eccentric load of the damper portion (3, 4, 5, 17, 18, 19, 20, etc. in FIG. 2) is determined by the rigidity of the friction materials 23 and 24 and the lining plate 22 in the limiter portion, and the cover plate 27 serving as a friction counterpart material. And the rigidity of the pressure plate 29 is affected. Therefore, in the first embodiment, in order to reduce the rigidity of the cover plate 27 serving as a friction counterpart material (to enable elastic deformation), elastic deformation is performed at a portion of the cover plate 27 between the friction portion 27b and the attachment portion 27c. A plurality of holes 27a are formed to make it possible. The number of holes 27a is preferably 12 or more at an equal pitch. Further, the shape of the hole 27a is preferably a shape (for example, a rounded square) satisfying “B / A ≧ 2” when the circumferential width is A and the damper radial width is B. . Further, the cover plate 27 is a portion between the friction surface and the mounting surface so that the friction surface of the friction portion 27b bends by an angle θ with respect to the mounting surface of the mounting portion 27c when not assembled to the rotating member (25 in FIG. 2). It is preferable to set the bending portion 27f so that the friction surface and the mounting surface are flat when assembled as shown in FIG.

  According to the first embodiment, since the rigidity of the cover plate 27 is reduced, the eccentric load of the damper portion is relaxed by the cover plate 27, and the eccentricity of the damper portion can be reduced.

(Embodiment 2)
A torque fluctuation absorber according to Embodiment 2 of the present invention will be described with reference to the drawings. FIG. 5 is a partial front view schematically showing the configuration of the cover plate in the torque fluctuation absorber according to Embodiment 2 of the present invention. FIG. 6 is a cross-sectional view taken along the line YY ′ of FIG. 5 schematically showing the configuration of the cover plate in the torque fluctuation absorber according to Embodiment 2 of the present invention. FIG. 7 is a cross-sectional view schematically showing a configuration of a modification of the cover plate in the torque fluctuation absorber according to Embodiment 2 of the present invention.

  In the second embodiment, in order to reduce the rigidity of the cover plate 33 that is a friction counterpart of the friction material (corresponding to 23 in FIG. 2) (to enable elastic deformation), the friction portion 33b and the attachment portion 33c in the cover plate 33 are used. A bent portion 33f for enabling elastic deformation is set at a portion between the two. Other configurations are the same as those of the first embodiment.

  The bent portion 33f of the cover plate 33 is configured to be bent a plurality of times. The number of times of bending of the bending portion 33f is set according to the required amount of elastic deformation, but the number of bending times may be reduced as shown in FIG. When the cover plate 33 is not assembled to the rotating member (25 in FIG. 2), the friction surface of the friction portion 33b is bent at an angle θ with respect to the mounting surface of the mounting portion 33c at the bent portion 33f, and is assembled as shown in FIG. The friction surface and the mounting surface excluding the bent portion 33f are set so as to be flat. The cover plate 33 is preferably set to satisfy “B / A ≦ 0.8”, where A is the thickness of the friction portion 33b and the attachment portion 33c and B is the thickness of the bent portion 33f. Moreover, you may form the some slit hole 33a in the bending part 33f according to the required amount of elastic deformation. The number of slit holes 33a can be 12 or more at an equal pitch. In addition, when the required amount of elastic deformation is small, it is good also as a structure which does not form a slit hole like FIG.

  According to the second embodiment, as in the first embodiment, the rigidity of the cover plate 33 is reduced. Therefore, the eccentric load of the damper portion is relaxed by the cover plate 33, and the eccentricity of the damper portion can be reduced. it can.

(Embodiment 3)
A torque fluctuation absorber according to Embodiment 3 of the present invention will be described with reference to the drawings. FIG. 8 is a partial front view schematically showing the configuration of the cover plate in the torque fluctuation absorber according to Embodiment 3 of the present invention.

  In the third embodiment, in order to reduce the rigidity of the cover plate 35 that is a friction counterpart of the friction material (corresponding to 23 in FIG. 2) (to enable elastic deformation), the cover plate 35 is provided with a portion other than the friction portion 35b. In order to make it elastically deformable, a notch portion 35g is formed by notching from the end portion side of the attachment portion 35c. Other configurations are the same as those of the first embodiment.

  The notch 35g has a diameter from the center (not shown) of the rotation axis of the cover plate 35 to the bottom of the recess of the notch 35g, and the center of the rotation hole (not shown) to the center of the bolt hole 35d. When the diameter up to B is B, it is preferable to satisfy “B / A ≧ 1.03”. When the cover plate 35 is not assembled to the rotating member (25 in FIG. 2), the friction surface of the friction portion 33b is angled with respect to the attachment surface of the attachment portion 33c at the bent portion 33f, depending on the required amount of elastic deformation. A bending portion 35f is set at a portion between the friction surface and the mounting surface so as to be bent, and the friction surface and the mounting surface can be set to be flat when assembled as shown in FIG.

  According to the third embodiment, since the rigidity of the cover plate 35 is reduced as in the first embodiment, the eccentric load of the damper portion is relaxed by the cover plate 35, and the eccentricity of the damper portion can be reduced. it can.

(Embodiment 4)
A torque fluctuation absorber according to Embodiment 4 of the present invention will be described with reference to the drawings. FIG. 9 is a partial cross-sectional view schematically showing the configuration of the limiter unit in the torque fluctuation absorber according to Embodiment 4 of the present invention. FIG. 10 is a partial plan view schematically showing the configuration of the friction counterpart material of the limiter unit in the torque fluctuation absorber according to Embodiment 4 of the present invention. FIG. 11 is a partial cross-sectional view schematically showing a configuration of a modification of the limiter unit in the torque fluctuation absorber according to Embodiment 4 of the present invention.

  In the fourth embodiment, in order to reduce the rigidity of the cover plate 40 that is a friction counterpart of the friction material 23 (to enable elastic deformation), both the plates are configured so that the friction plate 42 is supported by the support plate 41. And a bending portion 42c for allowing elastic deformation at the portion between the mounting portion 42a and the friction portion 42e in the friction plate 42 is set, and the opposite surface of the friction surface of the friction portion 42e is the support plate. 41 is separated. Other configurations are the same as those of the first embodiment.

  The cover plate 40 is an annular member in which the support plate 41 and the friction plate 42 are connected by a rivet (not shown), and is a component part of the limiter unit.

  The support plate 41 is a plate that supports the friction plate 42 on the opposite surface side of the friction plate 42 to the friction material 23 side. The support plate 41 has a bolt hole 41b through which a bolt (28 in FIG. 2) is inserted in an outer peripheral mounting portion 41a to be attached to a rotating member (25 in FIG. 2), and a rivet hole through which a rivet (not shown) is inserted. (Not shown). The support plate 41 is fixed to the support plate 26 together with the friction plate 42 by a rivet (not shown), and fixed to the rotating member (25 in FIG. 2) together with the friction plate 42 and the support plate 26 by a bolt (28 in FIG. 2). The The support plate 41 has a support portion 41 c that extends so as to be separated from the friction portion 42 e of the friction plate 42 on the opposite surface side of the friction plate 42 to the friction material 23 side. The support portion 41c comes into contact with bent portions 42c and 42f formed on the outer periphery and the inner periphery of the friction portion 42e of the friction plate 42.

  The friction plate 42 is slidably in contact with the friction material 23 and is a friction counterpart material with respect to the friction material 23. The friction plate 42 has a bolt hole 42b through which a bolt (28 in FIG. 2) is inserted in a mounting portion 42a on the outer periphery to be attached to the rotating member (25 in FIG. 2), and a rivet hole through which a rivet (not shown) is inserted. (Not shown). The friction plate 42 is fixed to the support plate 26 together with the support plate 41 by a rivet (not shown), and fixed to the rotating member (25 in FIG. 2) together with the support plate 41 and the support plate 26 by bolts (28 in FIG. 2). The The friction plate 42 is provided with a bent portion 42c for enabling elastic deformation at a portion between the friction portion 42e and the attachment portion 42a that are in friction with the friction material 23. The bent portion 42 c is configured to be bent a plurality of times, and a part thereof is in contact with the support portion 41 c of the support plate 41. In order for the friction part 42e to be elastically deformable by at least 0.3 mm or more, the bending part 42c has a plurality of holes 42d. The friction plate 42 has a bent portion 42f for contacting the support portion 41c of the support plate 41 at a portion on the inner peripheral side of the friction portion 42e. For the friction plate 42, it is preferable to use a material having a high antirust effect (for example, stainless steel) or a member subjected to heat treatment or chemical surface treatment. Thereby, the influence by rust can be prevented. In addition, since the friction plate 42 is thin, an increase in cost can be suppressed even if a high-grade material corresponding to rust is used.

  9 and 10, the bending portions 42 c and 42 f are formed in a special shape on the friction plate 42 in order to separate the friction portion 42 e of the friction plate 42 and the support portion 41 c of the support plate 41. However, as shown in FIG. 11, the outer periphery and the inner periphery of the friction portion 42e of the friction plate 42 may be flattened in the same manner as the friction portion 42e, and the concave portion 42d may be set in the support portion 41c of the support plate 41.

  According to the fourth embodiment, as in the first embodiment, since the rigidity of the friction plate 42 in the cover plate 40 is reduced, the eccentric load of the damper portion is relaxed by the friction plate 42, and the eccentricity of the damper portion is reduced. Can be reduced.

(Embodiment 5)
A torque fluctuation absorber according to Embodiment 5 of the present invention will be described with reference to the drawings. FIG. 12 is a partial cross-sectional view schematically showing the configuration of the limiter unit in the torque fluctuation absorber according to Embodiment 5 of the present invention. FIG. 13: is the fragmentary sectional view which showed typically the structure of the modification of the limiter part in the torque fluctuation absorber which concerns on Embodiment 5 of this invention. FIG. 14 is a partial plan view when viewed from an arrow A in FIG. 13 schematically showing a configuration of a modification of the limiter unit in the torque fluctuation absorber according to Embodiment 5 of the present invention.

  In the fifth embodiment, in order to reduce the rigidity of the cover plate 43 serving as a friction counterpart material of the friction material 23 (to enable elastic deformation), both plates are configured so that the friction plate 45 is supported by the support plate 44. The elastic member 46 that biases the friction plate 45 toward the friction material 23 is set between the friction portion 45e of the friction plate 45 and the support plate 44. Other configurations are the same as those of the first embodiment.

  In the cover plate 43, the support plate 44 and the friction plate 45 are integrated by a rivet (not shown), and the friction plate 45 is urged toward the friction material 23 between the friction portion 45e of the friction plate 45 and the support plate 44. It is an annular member in which the elastic member 46 is arranged, and is a component part of the limiter part.

  The support plate 44 is a plate that supports the friction plate 45 on the opposite surface side of the friction plate 45 to the friction material 23 side. The support plate 44 has a bolt hole 44b through which a bolt (28 in FIG. 2) is inserted in an outer peripheral mounting portion 44a attached to the rotating member (25 in FIG. 2), and a rivet hole through which a rivet (not shown) is inserted. (Not shown). The support plate 44 is fixed to the support plate 26 together with the friction plate 45 by a rivet (not shown), and fixed to the rotating member (25 in FIG. 2) together with the friction plate 45 and the support plate 26 by a bolt (28 in FIG. 2). The The support plate 44 has a support portion 44 c that extends so as to be separated from the friction portion 45 e of the friction plate 45 on the opposite surface side of the friction plate 45 to the friction material 23 side. The support portion 44 c comes into contact with the elastic member 46 on a surface facing the friction portion 45 e of the friction plate 45.

  The friction plate 45 is slidably in contact with the friction material 23 and is a friction counterpart material with respect to the friction material 23. The friction plate 45 has a bolt hole 45b through which a bolt (28 in FIG. 2) is inserted in an outer peripheral mounting portion 45a to be attached to a rotating member (25 in FIG. 2), and a rivet hole through which a rivet (not shown) is inserted. (Not shown). The friction plate 45 is fixed to the support plate 26 together with the support plate 44 by a rivet (not shown), and fixed to the rotating member (25 in FIG. 2) together with the support plate 44 and the support plate 26 by bolts (28 in FIG. 2). The The friction plate 45 is provided with a bent portion 44c for enabling elastic deformation at a portion between the friction portion 45e and the attachment portion 44a that friction with the friction material 23. The friction plate 45 abuts against the elastic member 46 on the surface on the support plate 44 side of the friction portion 45 e that abuts against the friction material 23, and is urged toward the friction material 23 by the elastic member 46.

  The elastic member 46 is an elastically deformable member disposed between the friction portion 45 e of the friction plate 45 and the support plate 44. The elastic member 46 biases the friction portion 45e of the friction plate 45 toward the friction material 23 side. For the elastic member 46, rubber, an elastomer, a disc spring, and a wave washer can be used.

  In FIG. 12, the cover plate 43 is formed by integrating the friction plate 45 and the support plate 44. However, as shown in FIGS. 13 and 14, the cover plate 47 may be formed by not integrating the friction plate 49 and the support plate 48. . A hole 48d is formed in the support plate 48 at a portion between the mounting portion 48a and the support portion 48c. A part of the outer periphery of the friction plate 49 is formed with a detent portion 49a inserted through the hole portion 48d. With the friction plate 49, the rotation preventing portion 49a is inserted into the hole portion 48d, so that it cannot rotate relative to the support plate 48 and can move in the axial direction. An elastic member 50 that biases the friction plate 49 toward the friction material 23 is disposed between the friction plate 49, the support plate 48, and the support portion 48c. For the elastic member 50, rubber, an elastomer, a disc spring, and a wave washer can be used.

  According to the fifth embodiment, as in the first embodiment, the rigidity of the friction plates 45 and 49 in the cover plates 43 and 47 is reduced, so that the eccentric load of the damper portion is relieved by the friction plate 42 and the damper portion. Can be reduced.

(Embodiment 6)
A torque fluctuation absorber according to Embodiment 6 of the present invention will be described with reference to the drawings. FIG. 15 is a partial cross-sectional view schematically showing the configuration of the lining plate and its periphery in the torque fluctuation absorber according to Embodiment 6 of the present invention. FIG. 16: is the fragmentary sectional view which showed typically the modification 1 of the structure of the lining plate and its periphery in the torque fluctuation absorber which concerns on Embodiment 6 of this invention. FIG. 17: is the fragmentary sectional view which showed typically the structure of the modification 2 of the lining plate in the torque fluctuation absorber which concerns on Embodiment 6 of this invention.

  The eccentric load of the damper portion (3, 4, 5, 17, 18, 19, 20 in FIG. 2) is affected by the rigidity of the friction material (23 and 24 in FIG. 2). Therefore, in the sixth embodiment, as shown in FIG. 17, the rigidity of the lining plate 51 that fixes the friction materials 23 and 24 is reduced. Other configurations are the same as those of the first embodiment.

  The lining plate 51 is an annular disk member fixed by the rivet 21 together with the side plate 4 and the side plate 5 between the side plate 4 and the side plate 5, and is a component part of the limiter unit that rotates integrally with the damper unit. It is. In the lining plate 51, the outer peripheral joint portion 51b extends between the cover plate (27 in FIG. 2) and the pressure plate (29 in FIG. 2), and the friction materials 23 and 24 are rivets on both surfaces of the joint portion 51b. (Not shown). The lining plate 51 has an inner peripheral attachment portion 51 a extending between the side plate 4 and the side plate 5, and is fixed by the rivet 21 together with the side plate 4 and the side plate 5 at the attachment portion 51 a. A bent portion 51c for enabling elastic deformation is set in a portion of the lining plate 51 between the attachment portion 51a and the joint portion 51b. When the lining plate 51 is not assembled to the rotating member (25 in FIG. 2), the joint surface of the joint portion 51b is bent at a predetermined angle with respect to the attachment surface of the attachment portion 51a at the bent portion 51c, and is assembled as shown in FIG. Set so that the joint surface and the mounting surface become flat.

  In FIG. 15, the bending portion 51 c of the lining plate 51 is bent once, but the bending portion 52 c may be bent twice or more as shown in FIG. 16. Further, as shown in FIG. 16, a plurality of hole portions 52e may be formed in the bent portion 52c according to the required amount of elastic deformation. In FIG. 16, the hole 52e is formed in the bent portion 52c, but a notch 53e cut out from the outer peripheral end of the joint portion 53b in the lining plate 53 may be formed as shown in FIG.

  According to the sixth embodiment, since the lining plate 51 for fixing the friction materials 23 and 24 is configured to be elastically deformable, the eccentric load of the damper portion is relaxed by the lining plate 51, and the eccentricity of the damper portion is reduced. Can be made.

(Embodiment 7)
A torque fluctuation absorber according to Embodiment 7 of the present invention will be described with reference to the drawings. FIG. 18 is a partial cross-sectional view schematically showing the configuration of the lining plate and its periphery in the torque fluctuation absorber according to Embodiment 7 of the present invention. FIG. 19 is a partial cross-sectional view schematically showing Modification 1 of the configuration of the lining plate and its periphery in the torque fluctuation absorber according to Embodiment 7 of the present invention. FIG. 20 is a partial cross-sectional view schematically showing Modification 2 of the configuration of the lining plate and its periphery in the torque fluctuation absorber according to Embodiment 7 of the present invention. FIG. 21 is a partial cross-sectional view schematically showing Modification 3 of the configuration of the lining plate and its periphery in the torque fluctuation absorber according to Embodiment 7 of the present invention. FIG. 22 is a partial cross-sectional view schematically showing Modification 4 of the configuration of the lining plate and its periphery in the torque fluctuation absorber according to Embodiment 7 of the present invention. FIG. 23 is a partial cross-sectional view schematically showing Modification 5 of the configuration of the lining plate and its periphery in the torque fluctuation absorber according to Embodiment 7 of the present invention.

  In the seventh embodiment, as shown in FIG. 18, the lining plate for fixing the friction materials 23 and 24 is composed of two sheets of a first lining plate 54 and a second lining plate 55 and can be elastically deformed to the first lining plate 54. The bending portion 54c is set to reduce the rigidity of the lining plate.

  As for the 1st lining plate 54, the friction material 23 has joined only the surface opposite to the surface by the side of the 2nd lining plate 55 in the junction part 54b. In the second lining plate 55, the friction material 24 is bonded only to the surface opposite to the surface on the first lining plate 54 side in the bonding portion 55b. A bent portion 54c that is bent twice is formed at a portion of the first lining plate 54 between the attachment portion 54a and the joint portion 54b. The second lining plate 55 has no bent portion at a portion between the attachment portion 55a and the joint portion 55b, and is flat overall. The joining portion 54b to the bending portion 54c in the first lining plate 54 are separated from the opposing second lining plate 55. An outer peripheral front end portion of the joint portion 54 b in the first lining plate 54 may be in contact with the second lining plate 55. The 1st lining plate 54 and the 2nd lining plate 55 are contact | abutting in the attaching parts 54a and 55a. The attachment portions 54 a and 55 a are disposed between the side plate 4 and the side plate 5, and are fixed by the rivets 21 together with the side plate 4 and the side plate 5. The first lining plate 54 and the second lining plate 55 are joined to the mounting surface of the mounting portion 54a at the bent portion 54c of the first lining plate 54 when not assembled to the rotating member (25 in FIG. 2). The joint surface 54b is bent at a predetermined angle, and the joint surface and the mounting surface of the first lining plate 54 are set to be flat when assembled as shown in FIG. Other configurations are the same as those of the first embodiment.

  In FIG. 18, the first lining plate 54 and the second lining plate 55 are composed of two lining plates. However, as shown in FIG. 19, the sub-plate portion 56a is branched into the main body of the lining plate 56 and elastically deformed. It is good also as a structure which provided.

  In FIG. 18, only the first lining plate 54 is provided with the bent portion 54c, but the bent portion 55c may also be set on the second lining plate 55 as shown in FIG. In this case, when the first lining plate 54 and the second lining plate 55 are not assembled to the rotating member (25 in FIG. 2) so as to be line symmetric in the cross-sectional configuration, the bent portions 54c, 55c to the joining portion 54b are used. , 55b are set apart from each other. Moreover, the outer periphery front-end | tip part of the junction part 54b and the junction part 55b may mutually contact.

  Further, in FIG. 18, the outer peripheral tip portions of the joint portion 54b and the joint portion 55b are in contact with or close to each other when not assembled to the rotating member (25 in FIG. 2), but are joined to the joint portion 54b as shown in FIG. You may comprise so that it may mutually space apart as it goes to an outer periphery, when the outer periphery front-end | tip part of the part 55b is not assembled | attached to a rotation member (25 of FIG. 2).

  In FIG. 18, the joint 54 b and the joint 55 b are not parallel when not assembled to the rotating member (25 in FIG. 2), but the joint 54 b and the joint 55 b are rotating members (see FIG. 22). You may set so that it may become parallel, when not assembled | attached to 25) of FIG. Moreover, you may arrange | position the elastic member 57 between the junction part 54b and the junction part 55b like FIG. For the elastic member 57, rubber, an elastomer, a disc spring, and a wave washer can be used.

  According to the seventh embodiment, as in the sixth embodiment, the lining plates 54, 55, 56 that fix the friction materials 23, 24 are configured to be elastically deformable, so that the eccentric load of the damper portion is reduced by the lining plate 54. , 55 and 56, and the eccentricity of the damper portion can be reduced.

(Embodiment 8)
A torque fluctuation absorber according to Embodiment 8 of the present invention will be described with reference to the drawings. FIG. 24 is a partial cross-sectional view schematically showing the configuration of the lining plate and its periphery in the torque fluctuation absorber according to Embodiment 8 of the present invention.

  In the eighth embodiment, the elastic member 58 is disposed between the friction materials 23 and 24 and the lining plate 22. For the elastic member 58, rubber or elastomer is used. When pressure-molding the friction materials 23 and 24 on the lining plate 22, the elastic member 58 is disposed between the friction materials 23 and 24 and the lining plate 22, and the elastic member 58 is contracted (sag) by heat, It is preferable to flatten the friction surfaces of the friction materials 23 and 24 (improve flatness). The elastic member 58 preferably has a property of contracting 3% or more when pressurized at 180 to 250 ° C. Other configurations are the same as those of the first embodiment.

  According to the eighth embodiment, the eccentric load of the damper portion is relaxed by the elastic member 58 between the friction materials 23 and 24 and the lining plate 22, and the eccentricity of the damper portion can be reduced. This makes it possible to reduce eccentricity by reducing the rigidity.

(Embodiment 9)
A torque fluctuation absorber according to Embodiment 9 of the present invention will be described with reference to the drawings. FIG. 25 is a partial cross-sectional view schematically showing the configuration of the lining plate and its periphery in the torque fluctuation absorber according to Embodiment 9 of the present invention. FIG. 26 is a partial cross-sectional view schematically showing the configuration of the limiter unit in the torque fluctuation absorber according to Embodiment 9 of the present invention. FIG. 27 is a process diagram schematically showing a method of manufacturing an assembly of a lining plate and a friction material in the torque fluctuation absorber according to Embodiment 9 of the present invention. FIG. 28: is the (A) partial front view (B) sectional drawing which showed typically the manufacturing method of the assembly of the lining plate and friction material in the torque fluctuation absorber which concerns on Embodiment 9 of this invention.

  The eccentric load of the damper portion (3, 4, 5, 17, 18, 19, 20, etc. in FIG. 2) is applied to the friction material (23, 24 in FIG. 2) and the friction counterpart material (27, 29 in FIG. 2). In order to be influenced by the flatness, the following method is used in the ninth embodiment in order to improve the flatness of one or both of the friction material and the friction counterpart material.

  Referring to FIG. 25, an annular stepped portion 60 c is set by pressing at a portion between the attachment portion 60 a and the joint portion 60 b in the lining plate 60 that fixes the friction materials 23 and 24. Since the step portion 60c is formed in an annular shape when viewed from the plane direction (the right side or the left side in FIG. 25), the flatness of the bonding surface of the bonding portion 60b in the lining plate 60 is improved. Therefore, the flatness of the friction surfaces of the friction materials 23 and 24 when the friction materials 23 and 24 are joined to the lining plate 60 is improved, and the eccentricity of the damper portion is reduced. Other configurations are the same as those of the first embodiment.

  Referring to FIG. 26, the rib portion 61 b is set on the entire outer periphery of the friction portion 61 a of the pressure plate 61. Since the rib portion 61b is formed in a circular shape when viewed from the plane direction (the right side or the left side in FIG. 26), the flatness of the friction surface of the friction portion 61a in the pressure plate 61 is improved. Further, a stepped portion 62c is set at a portion between the friction portion 62b and the mounting portion 62a of the cover plate 62. Since the stepped portion 62c is formed in a circular shape when viewed from the plane direction (the right side or the left side in FIG. 26), the flatness of the friction surface of the friction portion 62b in the cover plate 62 is improved. In addition, it is preferable that the space | interval A (clearance) of the outer peripheral end surface of the lining plate 22 and the friction materials 23 and 24 and each opposing surface of the rib part 61b and the level | step-difference part 62c with respect to this is 1 mm or less. Other configurations are the same as those of the first embodiment.

  Referring to FIG. 27, in the assembly of the lining plate 22 and the friction material block 64, first, the flatness of the friction surface is improved by polishing or the like at the stage of the sheet-like friction material material 63 that becomes the base material of the friction material block 64. After that, the friction material block 64 is punched with a press, and the punched friction material block 64 is joined to the lining plate 22 with improved flatness of the joint portion. Thereby, the flatness of the friction surface of the friction material block 64 is improved. Other configurations are the same as those of the first embodiment.

  Referring to FIG. 28, the assembly of the lining plate 22 and the friction materials 23 and 24 is polished while rotating between two polishing stones 65 whose axial intervals are regulated, and each friction of the friction materials 23 and 24 is polished. Improve the flatness of the surface. Other configurations are the same as those of the first embodiment.

  According to the ninth embodiment, since the flatness of one or both friction surfaces of the friction material and the friction counterpart material is improved, the eccentricity of the damper portion can be reduced.

(Embodiment 10)
A torque fluctuation absorber according to Embodiment 10 of the present invention will be described with reference to the drawings. FIG. 29 is a partial cross-sectional view schematically showing a configuration of a limiter unit in the torque fluctuation absorber according to Embodiment 10 of the present invention. FIG. 30 is a partial cross-sectional view schematically showing a configuration of Modification 1 of the limiter unit in the torque fluctuation absorber according to Embodiment 10 of the present invention. FIG. 31 is a partial cross-sectional view schematically showing a configuration of Modification 2 of the limiter unit in the torque fluctuation absorber according to Embodiment 10 of the present invention.

  In the tenth embodiment, the friction material (23, 24 in FIG. 2) is the cover plate (27 in FIG. 2) and the pressure plate (29 in FIG. 2) at the limiter portions (22, 23, 24, 27, 29, 30 etc.). In order to regulate the amount of eccentricity of the damper portion (3, 4, 5, 17, 18, 19, 20, etc. in FIG. 2) when slippage occurs, the following method is used.

  Referring to FIG. 29, convex portions 70a and 71b are set over the entire circumference of the friction surface of both the pressure plate 70 and the cover plate 71 (or one of them), and the friction material 72 corresponds to the convex portions 70a and 71b. The recess 72a to be set is set. The friction material 72 is formed integrally with the lining plate 22 through a through hole formed in the lining plate 22. The amount of eccentricity of the damper portion that rotates integrally with the friction material 72 is regulated by the guide function of the convex portions 70a and 71a and the concave portion 72a. Other configurations are the same as those of the first embodiment.

  Referring to FIG. 30, tapered portions 76a and 77a are formed over the circumference at the outer peripheral corners of the friction materials 76 and 77 joined to both sides of the lining plate 22, and both the pressure plate 74 and the cover plate 75 (on the one hand) The guide portions 74a and 75a corresponding to the tapered portions 76a and 77a are provided. The spacing (clearance) between the guide portions 74a and 75a and the corresponding tapered portions 76a and 77a is 1 so that the planar shape of the friction materials 76 and 77 can be dealt with even when the accuracy is poor, such as an ellipse. Set to 5 mm or less. The amount of eccentricity of the damper portion that rotates integrally with the friction materials 76 and 77 is regulated by the guide function of the taper portions 76a and 77a and the guide portions 74a and 75a. Other configurations are the same as those of the first embodiment.

  Referring to FIG. 31, one or a plurality of protrusions 78a, 79a having sharp edges are provided on the friction surfaces of both the pressure plate 78 and the cover plate 79, and the protrusions 78a, 79a correspond to the corresponding friction material when the damper part is assembled. 23, 24 are formed on the friction surfaces of the friction materials 23, 24, thereby forming grooves in which the protrusions 78a, 79a are transferred. Thus, the protrusions 78a and 79a are guided by the grooves formed in the friction materials 23 and 24, and the eccentric amount of the damper portion that rotates integrally with the friction materials 23 and 24 is restricted. Other configurations are the same as those of the first embodiment.

  According to the tenth embodiment, the eccentricity of the damper portion can be suppressed by regulating the eccentric amount of the damper portion by the friction surface of the limiter portion.

(Embodiment 11)
A torque fluctuation absorber according to Embodiment 11 of the present invention will be described with reference to the drawings. FIG. 32 is a partial cross-sectional view schematically showing a configuration of a limiter unit in the torque fluctuation absorber according to Embodiment 11 of the present invention. FIG. 33 is a partial cross-sectional view schematically showing a configuration of a modification of the limiter unit in the torque fluctuation absorber according to Embodiment 11 of the present invention.

  In the eleventh embodiment, as shown in FIG. 32, both of the friction materials 23 and 24 attached to the lining plates 55 and 54 are both inclined so that the distance between the friction surfaces 23 and 24 decreases toward the outer periphery. By tilting the friction surfaces of the pressure plate 80 and the cover plate 81 so as to correspond to the friction surfaces of the friction materials 23 and 24 (either one tilt is also possible), the amount of eccentricity of the damper portion can be reduced. It is regulated. The inclination angle of each friction surface of the friction materials 23 and 24 (angle with respect to the radial direction) is preferably 3 ° or more. Each of the lining plates 55 and 54 is provided with bent portions 55c and 54c at portions between the mounting portions 55a and 54a and the joint portions 55b and 54b, and the interval decreases as the mounting portions 55a and 54a go to the outer periphery. It is set to be. Other configurations are the same as those of the first embodiment.

  In FIG. 32, two lining plates 55 and 54 and two friction materials 23 and 24 are provided. However, as shown in FIG. 33, a friction material 82 is integrally formed on one lining plate 22, At this time, the distance between the friction surfaces of the friction material 82 may be set to be smaller as it goes to the outer periphery.

  According to the eleventh embodiment, the two friction surfaces of the friction material are set so that the distance between them becomes smaller as going to the outer periphery, and the pressure plate 80 and the cover plate 81 are made to correspond to the friction surfaces of the friction materials 23 and 24, respectively. By inclining each friction surface, the amount of eccentricity of the damper portion is regulated, and the eccentricity of the damper portion can be reduced.

DESCRIPTION OF SYMBOLS 1 Torque fluctuation absorber 3 Hub member 3a Flange part 3b Window part 4 Side plate 4a Hole part 5 Side plate 6 Thrust member 6a Anti-rotation part 6b Fall prevention part 7 Disc spring 8 Intermediate plate 9 Disc spring 10 Control plate 11 Disc spring 12 Thrust member 13 Thrust member 14 Control plate 15 Thrust member 16 Pin member 17 Spring seat 18 Spring seat 19 Coil spring 20 Elastic member 21 Rivet 22 Lining plate 23 Friction material 24 Friction material 25 Rotating member 26 Support plate 26a Openings 27, 33, 34, 35 Cover plate 27a, 33a Hole (slit hole)
27b, 33b, 34b, 35b Friction portion 27c, 33c, 34c, 35c Mounting portion 27d, 33d, 34d, 35d Bolt hole 27e Rivet hole 27f, 33f, 34f, 35f Bending portion 28 Bolt 29 Pressure plate 29a Protruding portion 30 Disc spring 31 Bolt 35g Notch 40, 43, 47 Cover plate 41, 44 Support plate 41a, 44a Mounting part 41b, 44b Bolt hole 41c, 44c Supporting part 41d Recess 42, 45 Friction plate 42a, 45a Mounting part 42b, 45b Bolt hole 42c, 45c Bending part 42d Hole 42e, 45e Friction part 42f Bending part 46, 50 Elastic member 48 Support plate 48a Mounting part 48b Bolt hole 48c Support part 48d Hole part 49 Friction plate 49a Anti-rotation part 51, 52, 53 Linin Plates 51a, 52a, 53a Attachment portions 51b, 52b, 53b Joint portions 51c, 52c, 53c Bending portions 51d, 52d, 53d Rivet hole portions 52e Hole portions 53e Notch portions 53f Rivet hole portions 54 First lining plate 54a Attachment portions 54b Joining portion 54c Bending portion 55 Second lining plate 55a Mounting portion 55b Joining portion 55c Bending portion 56 Lining plate 56a Subplate portion 56b Mounting portion 56c First joining portion 56d Second joining portion 56e Bending portion 57, 58 Elastic member 60 Lining plate 60a mounting portion 60b joint portion 60c stepped portion 61 pressure plate 61a friction portion 61b rib portion 62 cover plate 62a mounting portion 62b friction portion 62c stepped portion 63 sheet-like friction material 64 friction material block 65 polishing stone 6 support portion 67 adjusting pin 70 the pressure plate 70a projecting portion (guide portion)
71 Cover plate 71a Convex part (guide part)
72 friction material 72a concave portion 74 pressure plate 74a guide portion 75 cover plate 75a guide portion 76, 77 friction material 76a, 77a taper portion 78 pressure plate 78a projection portion 79 cover plate 79a projection portion 80 pressure plate 81 cover plate 81a mounting portion 81b friction Part 81c bending part 82 friction material

Claims (4)

A torque fluctuation absorber comprising: a limiter portion in which a friction material fixed to a lining plate is sandwiched between a cover plate and a pressure plate; and a damper portion that rotates integrally with the lining plate and the friction material and absorbs torque fluctuation. In
One or both of the cover plate and the pressure plate guide the friction material so as to regulate the eccentricity of the damper portion when the friction material slides with the cover plate and the pressure plate. Torque fluctuation absorber. The guide portion is a convex portion protruding toward the friction material at the friction surface with the friction material,
The convex portion is set over the entire friction surface,
The torque fluctuation absorber according to claim 1, wherein the friction material has a concave portion corresponding to the convex portion. The friction material has a tapered portion on the entire circumference of the outer peripheral corner portion,
The torque fluctuation absorber according to claim 1, wherein the guide portion corresponds to the tapered portion of the friction material. Both friction surfaces of the friction material are configured such that the distance between the friction surfaces decreases as going to the outer periphery,
2. The torque fluctuation absorber according to claim 1, wherein the friction surfaces of the cover plate and the pressure plate are configured to correspond to the friction surfaces of the friction material.

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