JP2008304008A - Torque fluctuation absorbing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a torque fluctuation absorbing device with a torque limiting function having improved torsional performance and damping performance by arranging a damper part on the outer periphery. <P>SOLUTION: The torque fluctuation absorbing device 1 comprises the damper part 2 , a limiter part 3 and a hysteresis part 4 provided in a power transmission passage from a flywheel 53 to an inner periphery hub member 11. The damper part 2, the limiter part 3 and the hysteresis part 4 are arranged in sequence from the outer periphery side. The damper part 2 has disc plates 51, 52, an outer periphery hub member 41, and a coil spring 49 for damping vibration with the rotation of the disc plates 51, 52 relative to the outer periphery hub member 41, as structural components. The disc plates 51, 52 are integrally fixed to a portion near the outer peripheral end of the flywheel 53 with bolts 54. <P>COPYRIGHT: (C)2009,JPO&INPIT

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 unit including a friction material frictionally engaged with the flywheel, and a limiter unit connected to the input of the transmission And a damper portion connected to the shaft. The following is a conventional technique for such a torque fluctuation absorber.

  As a conventional example 1, a limiter mechanism that cuts off transmission of power when the fluctuation torque due to the engine and the electric motor reaches a predetermined value, a first rotating member that is driven to rotate by the engine, and a second rotating member that is connected to the electric motor, And a torsion member that suppresses fluctuation torque between the first rotation member and the second rotation member, and the limiter mechanism has a fluctuation torque between the first rotation member and the second rotation member that reaches a predetermined value. Then, there is a torque fluctuation absorber in which transmission of power from the first rotating member to the second rotating member is interrupted and an inertial body is formed on the first rotating member or the second rotating member (see Patent Document 1).

  Conventional Example 2 includes a flywheel coupled to an engine crankshaft, a damper assembly disposed in a torque transmission path between the flywheel and a driven input shaft, and having a pair of drive plates, driven plates, and spring dampers. A torque limiter disposed in a torque transmission path between the flywheel and the damper assembly, and having a pair of lining portions and causing slipping when a torque exceeding a predetermined value is applied, and the driven plate has a hub A torque fluctuation absorbing device is disclosed in which a bush is disposed between the hub and the drive plate, and there is a gap for allowing rotation between the bush and the hub and between the bush and the drive plate. (See Patent Document 2).

JP 2002-13547 A Japanese Patent No. 3683165

  However, in Conventional Example 1, since the limiter mechanism is disposed on the outer peripheral side of the damper, the space for arranging the torsion member (coil spring) is narrow, and it is difficult to suppress the eccentricity of the damper. In other words, the eccentricity of the damper is affected by the rigidity of the friction material and its friction counterpart material in the limiter mechanism, and if the limiter mechanism is arranged on the outer peripheral side of the damper, it reduces the rigidity of the friction counterpart material. Since it is not suitable, it is difficult to suppress the eccentricity of the damper. Moreover, in the prior art example 1, since the limiter mechanism is arranged on the outer peripheral side of the damper, the inertia on the output side of the damper (portion after the torsion member) is small, and on the output side of the damper to suppress noise and vibration. It was necessary to provide an inertial body separately. Moreover, in the prior art example 1, since the limiter mechanism is disposed on the outer peripheral side of the damper, the torsion amount of the damper has to be reduced.

  In Conventional Example 2, in order to reduce the eccentricity of the damper, a bush is provided between the hub of the driven plate and the drive plate, and a bush is also provided between the drive plate and the flywheel. Since the bush between the drive plate and the flywheel is disposed on the outer peripheral side from the damper, there is a problem that the diameter is large, the sliding amount is large, and wear easily occurs. In addition, if a bush is disposed between the drive plate and the flywheel, the size and cost of the device are disadvantageous. In Conventional Example 2, there is a case where a bearing is provided between the damper and the flywheel on the inner periphery side of the damper. Centering of the damper and the flywheel is performed with reference to the joint portion of the flywheel and the crankshaft. Therefore, it is difficult to assemble the damper to the flywheel, it is difficult to manage the performance after the torque fluctuation absorber is attached to the vehicle, and it is difficult to provide a space bearing.

  The main subject of this invention is improving the high torsion performance and damping performance of a torque fluctuation absorber having a torque limit function by disposing a damper portion on the outer periphery.

  In one aspect of the present invention, in a torque fluctuation absorber having a damper portion and a limiter portion in a power transmission path from an input side rotating member to an output side rotating member, the damper portion is disposed on an outer periphery of the limiter portion. It is characterized by being.

  In the torque fluctuation absorber according to the present invention, it is preferable that a hysteresis portion is provided, and the damper portion, the limiter portion, and the hysteresis portion are arranged in this order from the outer peripheral side.

  In the torque fluctuation absorber according to the present invention, it is preferable that a hysteresis portion is provided, and the damper portion, the hysteresis portion, and the limiter portion are arranged in this order from the outer peripheral side.

  In the torque fluctuation absorber according to the present invention, the damper portion includes, as components, two disk plates, a hub member, and a spring that attenuates vibration caused by relative rotation of the disk plate and the hub member. Preferably, the disk plate is integrally fixed to a portion in the vicinity of the outer peripheral end portion of the input side rotation member by a bolt.

  In the torque fluctuation absorber according to the present invention, the limiter unit is configured to sandwich a multi-plate structure in which a plurality of plates and friction materials are alternately arranged in the axial direction, and the input side rotating member and It is preferable that the transmission of power is interrupted by slipping when the fluctuation torque between the output side rotating members reaches a predetermined value.

  In the torque fluctuation absorber according to the present invention, it is preferable that the multi-plate structure is disposed between two side plates and is pressurized by a spring.

  In the torque fluctuation absorber according to the present invention, odd-numbered rows of plates in the multi-plate structure are engaged with a holding member that fixes the side plate so as not to be relatively rotatable and axially movable, and in the multi-plate structure. The even-numbered plates are configured to engage with the hub member so as not to be relatively rotatable and axially movable, and the holding member is configured to be engaged with the output-side rotating member so as not to be relatively rotatable and axially movable. It is preferable.

  In the torque fluctuation absorber according to the present invention, the side plates are integrally fixed to each other, and the odd-numbered plates in the multi-plate structure are engaged with at least one of the side plates so that they cannot rotate relative to each other and can move in the axial direction. The even-numbered plates in the multi-plate structure are engaged with the hub member so as not to rotate relative to the hub and move in the axial direction, and at least one of the side plates cannot rotate relative to the output-side rotating member. It is preferably configured to engage axially movably.

  In the torque fluctuation absorber according to the present invention, at least one of the side plates has a press-molded configuration, and an outer spline that engages an odd-numbered plate of the multi-plate structure on the outer peripheral surface of the cylindrical portion. It is preferable that an inner spline that engages with the output-side rotating member is formed on the inner peripheral surface of the cylindrical portion.

  In the torque fluctuation absorber according to the present invention, it is preferable that the odd-numbered or even-numbered plates of the multi-plate structure are made of an elastic material that is deformable in the axial direction.

  In the torque fluctuation absorber according to the aspect of the invention, it is preferable that the limiter unit is configured so that the output-side rotating member and the friction material are slidably in contact with each other.

  In the torque fluctuation absorber according to the present invention, it is preferable that the hysteresis section has a hysteresis structure that fluctuates according to an operating state of torque fluctuation of the input side rotating member.

  In the torque fluctuation absorber according to the present invention, it is preferable that the hysteresis section has a hysteresis structure that changes when the torsional amplitudes of the input-side rotating member and the output-side rotating member become a predetermined value or more.

  In the torque fluctuation absorber according to the present invention, in the hysteresis portion, a control plate and a thrust member are disposed between the disk plate and the output side rotating member, and the output side rotating member is sandwiched between the control plates. The control plate is caulked and fixed to a rivet, and the rivet is inserted into a hole formed in the output side rotating member, and when a torsional vibration exceeding a clearance region between the hole and the rivet is generated. The hysteresis between the output side rotating member and the control plate is preferably increased.

  According to the present invention, since the damper portion is disposed on the outermost peripheral portion of the torque fluctuation absorber, the mounting space and stroke of the coil spring are increased, and the torsion angle can be increased in the torque fluctuation absorber including the limiter portion. And torsional performance and damping performance can be improved. In addition, since the limiter portion has a multi-plate structure, a sufficient torque limit value can be set as compared with the outer peripheral arrangement even when the limiter portion is relatively arranged on the inner peripheral side.

(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. FIG. 3 is a view schematically showing the relationship between the rivet and the inner peripheral hub member in the torque fluctuation absorber according to Embodiment 1 of the present invention. In FIG. 1, the disk plate 51, the bolt 54, the rivet 55, the thrust member 42, and the thrust member 28 are 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 absorber 1 includes a damper portion 2, a limiter portion 3, and a hysteresis portion 4 as a torsional buffer function.

  The damper portion 2 is a portion that attenuates vibration caused by relative rotation between the flywheel 53 and the inner peripheral hub member 11, and is disposed on the outer peripheral side of the limiter portion 3 and the hysteresis portion 4. The limiter portion 3 is a portion that allows relative rotation of the flywheel 53 and the inner peripheral hub member 11 when excessive torque fluctuation occurs, and is disposed between the damper portion 2 and the hysteresis portion 4. The hysteresis unit 4 applies a brake to the relative rotation of the flywheel 53 and the inner peripheral hub member 11 by using a hysteresis characteristic of a frictional force that varies depending on an operating condition such as a torque variation of an engine (not shown). This is a part that suppresses noise and vibration, and is arranged on the inner peripheral side with respect to the damper part 2 and the limiter part 3. The hysteresis portion 4 is configured to change when the torsional amplitude of the flywheel 53 and the inner peripheral hub member 11 exceeds a certain value. 1 and 2, the damper part 2, the limiter part 3, and the hysteresis part 4 are arranged in this order from the outer peripheral side. However, the damper part 2 is arranged on the outer peripheral side from the limiter part 3 and the hysteresis part 4. The hysteresis part 4 may be arranged on the outer periphery rather than the limiter part 3.

  The torque fluctuation absorber 1 includes an inner peripheral hub member 11, a bearing 12, a thrust member 13, a thrust member 14, a control plate 15, a disc spring 16, a control plate 17, a thrust member 18, and a thrust member. 19, a disc spring 20, an intermediate plate 21, a disc spring 22, a thrust member 23, a control plate 24, a thrust member 25, a holding member 26, a rivet 27, a thrust member 28, and a side plate 29. A side plate 30, a thrust member 31, a disc spring 32, a plate 33, a friction material 34, a lining plate 35, a friction material 36, a plate 37, a friction material 38, a lining plate 39, Friction material 40, outer peripheral hub member 41, thrust member 42, thrust member 43, and thrust Material 44, thrust member 45, guide plate 46, guide plate 47, rivet 48, coil spring 49, spring seat 50, disc plate 51, disc plate 52, flywheel 53, bolt 54 And a rivet 55, a bolt 56, a rivet 57, and a cushion member 58.

  The inner peripheral hub member 11 is an output side rotary member that is spline-engaged with a rotary shaft (not shown) of an electric motor (not shown) on the inner peripheral side, and is a component part of the hysteresis unit 4. . The inner peripheral hub member 11 has a flange portion 11a extending to the outer peripheral side. The flange portion 11a is slidably in contact with the thrust member 18 on the surface on the disk plate 52 side. The flange portion 11a is slidably in contact with the thrust member 25 on the surface on the disk plate 51 side. The flange portion 11a has a hole portion 11b for inserting the rivet 57 into the intermediate portion. The hole portion 11 b is configured to be larger than the diameter of the intermediate portion of the rivet 57 and guides the relative rotation between the flange portion 11 a and the rivet 57. Hysteresis increases when torsional vibration exceeding the clearance region between the hole 11b and the intermediate portion of the rivet 57 occurs. Thereby, noise and vibration can be suppressed. An outer spline 11c is formed on the outer peripheral surface of the flange portion 11a. The outer spline 11c is engaged with the inner spline 26a of the holding member 26 so as not to be relatively rotatable and to be movable in the axial direction. The outer peripheral surface of the cylindrical portion of the inner peripheral hub member 11 is slidably in contact with the thrust member 13 on the disk plate 52 side, and is slidably in contact with the thrust member 19 on the disk plate 51 side. A bearing 12 is fitted to a portion of the cylindrical portion of the inner peripheral hub member 11 that faces the inner peripheral surface of the disk plate 51.

  The bearing 12 is a ball bearing serving as a bearing between the inner peripheral hub member 11 and the disk plate 51. The inner ring of the bearing 12 is fitted to the inner peripheral hub member 11, and the outer ring of the bearing 12 supports the disc plate 51. Thereby, positioning accuracy can be improved and displacement of the limiter unit 3 can be prevented. In addition, you may use the bush used as a sliding bearing instead of the bearing 12. FIG.

  The thrust member 13 is a ring-shaped member disposed between the disk plate 52 and the thrust member 14 on the outer periphery of the cylindrical portion of the inner peripheral hub member 11, and is a component part of the hysteresis portion 4. An inner peripheral end portion of the thrust member 13 extends between the inner peripheral hub member 11 and the disk plate 52 and also extends between the inner peripheral hub member 11 and the thrust member 14 and the control plate 15. It has become. The thrust member 13 is engaged with the disk plate 52 so as not to rotate relative to the disk plate 52 and to be movable in the axial direction. The thrust member 13 is in contact with the thrust member 14 so as to be integrally fixed or slidable.

  The thrust member 14 is a ring-shaped member disposed on the outer periphery of the cylindrical portion of the inner peripheral hub member 11 and between the thrust member 13 and the control plate 15, and is a component part of the hysteresis portion 4. The thrust member 14 is in contact with the control plate 15 so as to be integrally fixed or slidable.

  The control plate 15 is a ring-shaped plate arranged on the outer periphery of the cylindrical portion of the inner peripheral hub member 11 and between the thrust member 14 and the disc spring 16, and is a component part of the hysteresis portion 4. A thrust member 14 is integrally fixed to the control plate 15, and is biased toward the thrust member 14 by a disc spring 16. The outer peripheral portion of the control plate 15 is caulked and fixed to one end of the rivet 57.

  The disc spring 16 is a ring-shaped spring member disposed between the control plate 15 and the control plate 17 on the outer periphery of the cylindrical portion of the inner peripheral hub member 11, and is a component part of the hysteresis portion 4. The disc spring 16 urges the control plate 15 toward the thrust member 14 and urges the control plate 17 toward the thrust member 18.

  The control plate 17 is a ring-shaped plate arranged on the outer periphery of the cylindrical portion of the inner peripheral hub member 11 and between the disc spring 16 and the thrust member 18, and is a component part of the hysteresis portion 4. The control plate 17 is urged toward the thrust member 18 by the disc spring 16, and the thrust member 18 is in contact with the thrust plate 18 so as to be integrally fixed or slidable. The outer peripheral portion of the control plate 17 is engaged with the intermediate portion of the rivet 57 so as not to be relatively rotatable and to be movable in the axial direction.

  The thrust member 18 is a ring-shaped member arranged on the outer periphery of the cylindrical portion of the inner peripheral hub member 11 and between the control plate 17 and the flange portion 11 a of the inner peripheral hub member 11. It is a part. The thrust member 18 is in contact with the control plate 17 so as to be integrally fixed or slidable.

  The thrust member 19 is a ring-shaped member disposed on the outer periphery of the cylindrical portion of the inner peripheral hub member 11 and between the disc spring 22 and the thrust member 23, and is a component part of the hysteresis portion 4. An inner peripheral portion of the thrust member 19 extends to the bearing 12 side. The outer peripheral portion of the thrust member 19 has a portion protruding to the disk plate 51 side, and is engaged with the disc spring 20 and the disc spring 22 so as not to be relatively rotatable and axially movable. The thrust member 19 is urged toward the thrust member 23 by a disc spring 22 and is in contact with the thrust member 23 so as to be integrally fixed or slidable.

  The disc spring 20 is a ring-shaped spring member disposed between the disc plate 51 and the intermediate plate 21 on the outer periphery of the cylindrical portion of the inner peripheral hub member 11, and is a component part of the hysteresis portion 4. The disc spring 20 is engaged with the thrust member 19 at the outer peripheral portion so as not to be relatively rotatable and axially movable. The disc spring 20 biases the intermediate plate 21 toward the disc spring 22 side.

  The intermediate plate 21 is a ring-shaped plate arranged between the disc spring 20 and the disc spring 22 on the outer periphery of the cylindrical portion of the inner peripheral hub member 11, and is a component part of the hysteresis portion 4. The intermediate plate 21 is urged toward the disc spring 22 by the disc spring 20 and presses the disc spring 22 against the thrust member 19 side.

  The disc spring 22 is a ring-shaped spring member arranged on the outer periphery of the cylindrical portion of the inner peripheral hub member 11 and between the thrust member 19 and the intermediate plate 21, and is a component part of the hysteresis portion 4. The disc spring 22 is engaged with the thrust member 19 at the outer peripheral portion so as not to rotate relative to the thrust member and to be movable in the axial direction. The disc spring 22 is pressed against the thrust member 19 by the disc spring 20 through the intermediate plate 21 and urges the thrust member 19 toward the thrust member 23.

  The thrust member 23 is a member arranged on the outer periphery of the cylindrical portion of the inner peripheral hub member 11 and between the thrust member 19 and the control plate 24, and is a component part of the hysteresis portion 4. The thrust member 23 is in contact with the thrust member 19 so as to be integrally fixed or slidable.

  The control plate 24 is a plate arranged on the outer periphery of the cylindrical portion of the inner peripheral hub member 11 and between the thrust member 23 and the thrust member 25, and is a component part of the hysteresis portion 4. The control plate 24 is in contact with the thrust member 23 and the thrust member 25 so as to be integrally fixed or slidable. The outer peripheral portion of the control plate 24 is fixed to the other end of the rivet 57 by caulking.

  The thrust member 25 is a member disposed on the outer periphery of the cylindrical portion of the inner peripheral hub member 11 and between the control plate 24 and the flange portion 11 a of the inner peripheral hub member 11, and is a component of the hysteresis portion 4. . The thrust member 25 is in contact with the control plate 24 so as to be integrally fixed or slidable, and in contact with the flange portion 11a.

  The holding member 26 is a ring-shaped member disposed on the outer periphery of the flange portion 11 a of the inner peripheral hub member 11, and is a component part of the limiter portion 3. An inner spline 26 a is formed on the inner peripheral surface of the holding member 26. The inner spline 26a is engaged with the outer spline 11c of the inner peripheral hub member 11 so as not to be rotatable relative to the outer spline 11c and to be movable in the axial direction. An outer spline 26 b is formed on the outer peripheral surface of the holding member 26. The outer spline 26b is engaged with the plate 33 and the plate 37 so that they cannot rotate relative to each other and can move in the axial direction. Engagement with the inner spline 26a and the outer spline 26b enables high torque power transmission. A hole for inserting the rivet 27 is formed in an intermediate portion of the holding member 26. A side plate 30 is caulked and fixed to the end of the holding member 26 on the disk plate 52 side by a rivet 27. A side plate 29 is caulked and fixed to the end of the holding member 26 on the disk plate 51 side by a rivet 27.

  The rivet 27 is a member for caulking and fixing the side plate 29 and the side plate 30 to both ends of the holding member 26 in the axial direction. The rivet 27 is inserted through a hole formed in the holding member 26, and the side plate 29 is caulked and fixed at one end, and the side plate 30 is caulked and fixed at the other end.

  The thrust member 28 is a member disposed between the disk plate 51 and the side plate 29. The thrust member 28 is slidably in contact with the disk plate 51 and the side plate 29.

  The side plate 29 is a ring-shaped plate that is caulked and fixed to the rivet 27 at the end of the holding member 26 on the disk plate 51 side, and is a component of the limiter unit 3. The outer peripheral portion of the side plate 29 extends to the outer peripheral side with respect to the holding member 26 and is disposed between the thrust member 28 and the disc spring 32. The side plate 29 is slidably in contact with the thrust member 28 and supports one end of the disc spring 32.

  The side plate 30 is a ring-shaped plate that is caulked and fixed to the rivet 27 at the end of the holding member 26 on the disk plate 52 side, and is a component of the limiter unit 3. The outer peripheral portion of the side plate 30 extends to the outer peripheral side from the holding member 26, and is disposed between the thrust member 31 and the friction material 40. The side plate 30 is slidably in contact with the thrust member 31 and the friction material 40.

  The thrust member 31 is a ring-shaped member disposed between the disk plate 52 and the side plate 30. The thrust member 31 is slidably in contact with the disk plate 52 and the side plate 30.

  The disc spring 32 is a ring-shaped spring member disposed between the side plate 29 and the plate 33 on the outer periphery of the holding member 26, and is a component part of the limiter unit 3. The disc spring 32 has one end supported by the side plate 29 and the other end biasing the plate 33 toward the friction material 34.

  The plate 33 is a ring-shaped plate disposed between the disc spring 32 and the friction material 34 on the outer periphery of the holding member 26, and is a component part of the limiter unit 3. The plate 33 engages with the outer spline 26b of the holding member 26 at the inner peripheral portion so as not to be relatively rotatable and to be movable in the axial direction. The plate 33 is urged toward the friction material 34 by the disc spring 32 and slidably contacts the friction material 34.

  The friction material 34 is a ring-shaped member disposed between the plate 33 and the lining plate 35 on the outer periphery of the holding member 26, and is a component part of the limiter unit 3. The friction material 34 is integrally fixed to the lining plate 35 and slidably contacts the plate 33.

  The lining plate 35 is a ring-shaped plate disposed between the friction material 34 and the friction material 36 on the outer periphery of the holding member 26, and is a component part of the limiter unit 3. The friction material 34 and the friction material 36 are integrally fixed to the lining plate 35. The outer peripheral portion of the lining plate 35 is engaged with the inner spline 41a of the outer peripheral hub member 41 so as not to be relatively rotatable and to be movable in the axial direction.

  The friction material 36 is a ring-shaped member disposed between the lining plate 35 and the plate 37 on the outer periphery of the holding member 26, and is a component part of the limiter unit 3. The friction material 36 is integrally fixed to the lining plate 35 and slidably contacts the plate 37.

  The plate 37 is a ring-shaped plate disposed between the friction material 36 and the friction material 38 on the outer periphery of the holding member 26, and is a component part of the limiter unit 3. The plate 37 is engaged with the outer spline 26b of the holding member 26 at the inner peripheral portion so as not to be relatively rotatable and to be movable in the axial direction. The plate 37 is slidably in contact with the friction material 36 and the friction material 38.

  The friction material 38 is a ring-shaped member disposed between the plate 37 and the lining plate 39 on the outer periphery of the holding member 26, and is a component part of the limiter unit 3. The friction material 38 is integrally fixed to the lining plate 39 and slidably contacts the plate 37.

  The lining plate 39 is a ring-shaped plate disposed between the friction material 38 and the friction material 40 on the outer periphery of the holding member 26, and is a component part of the limiter unit 3. The friction material 38 and the friction material 40 are integrally fixed to the lining plate 39. The outer peripheral portion of the lining plate 39 is engaged with the inner spline 41a of the outer peripheral hub member 41 so as not to be relatively rotatable and to be movable in the axial direction.

  The friction material 40 is a ring-shaped member disposed between the lining plate 39 and the side plate 30 on the outer periphery of the holding member 26, and is a component part of the limiter unit 3. The friction material 40 is integrally fixed to the lining plate 39 and slidably contacts the side plate 30.

  The outer peripheral hub member 41 is a cylindrical member disposed on the outer periphery of the lining plates 35 and 39 and is a component part of the damper portion 2 and the limiter portion 3. The outer peripheral hub member 41 has an inner spline 41a on the inner peripheral surface. The inner spline 41a engages with the lining plates 35 and 39 so as not to be relatively rotatable and axially movable. Both axial ends of the cylindrical portion of the outer peripheral hub member 41 are slidably in contact with the thrust member 42 and the thrust member 43. The outer peripheral hub member 41 has a flange portion 41b extending to the outer peripheral side. The flange portion 41 b has a window portion for accommodating the guide plate 46, the guide plate 47, the rivet 48, the coil spring 49, the spring seat 50, and the cushion member 58, and the circumferential end surface of the window portion is the spring seat 50. Is in close contact with and away from. The flange portion 41b is slidably in contact with the thrust member 44 on the surface on the guide plate 46 side. The flange portion 41b is slidably in contact with the thrust member 45 on the surface on the guide plate 47 side.

  The thrust member 42 is a ring-shaped member disposed between the cylindrical portion of the outer peripheral hub member 41 and the disk plate 51. The thrust member 42 is slidably in contact with the outer peripheral hub member 41 and the disk plate 51.

  The thrust member 43 is a ring-shaped member disposed between the cylindrical portion of the outer peripheral hub member 41 and the disk plate 52. The thrust member 43 is slidably in contact with the outer peripheral hub member 41 and the disk plate 52.

  The thrust member 44 is a ring-shaped member disposed between the flange portion 41 b of the outer peripheral hub member 41 and the guide plate 46. The thrust member 44 is slidably in contact with the flange portion 41b and the guide plate 46. Thereby, noise and vibration are suppressed, and positioning between components becomes possible. The thrust member 44 may be disposed between the guide plate 46 and the disk plate 51.

  The thrust member 45 is a ring-shaped member disposed between the flange portion 41 b of the outer peripheral hub member 41 and the guide plate 47. The thrust member 45 is slidably in contact with the flange portion 41b and the guide plate 47. Thereby, noise and vibration are suppressed, and positioning between components becomes possible. The thrust member 45 may be disposed between the guide plate 47 and the disk plate 52.

  The guide plate 46 is a ring-shaped plate mainly disposed between the flange portion 41 b of the outer peripheral hub member 41 and the disc plate 51, and is a component part of the damper portion 2. The guide plate 46 has a rib 46a whose inner peripheral end is bent toward the disk plate 51 in order to ensure strength. The guide plate 46 is slidably in contact with the thrust member 44 on the surface on the flange portion 41b side. The guide plate 46 has a bent portion in which a part of the outer peripheral end portion extends to the outer peripheral side and protrudes toward the guide plate 47 at a portion corresponding to the window portion of the flange portion 41b, and a rivet is formed at the bent portion. The guide plate 47 is integrally fixed by 48. A portion of the guide plate 46 disposed in the window portion of the flange portion 41b is disposed at an intermediate position between the coil springs 49 disposed in series in the rotation direction. Thereby, the strength of the guide plates 46 and 47 can be ensured. The end surface of the guide plate 46 in the circumferential direction is a seating surface of the end portion of the coil spring 49. The seat surface has a coil central axis of the coil spring 49 and a convex portion protruding to the outer periphery. The protrusion preferably protrudes from the end of the coil spring 49 by 1.5 turns or more. The guide plate 46 is rotatable relative to the outer peripheral hub member 41 within a range in the circumferential direction of the window portion of the flange portion 41b. The guide plate 46 reduces sliding hysteresis between the coil spring 49 and the disk plate 51 and the disk plate 52, and reduces wear of the coil spring 49.

  The guide plate 47 is a ring-shaped plate mainly disposed between the flange portion 41 b of the outer peripheral hub member 41 and the disc plate 52, and is a component part of the damper portion 2. The guide plate 47 has a rib 47a whose inner peripheral end is bent toward the disk plate 52 in order to ensure strength. The guide plate 47 is slidably in contact with the thrust member 45 on the surface on the flange portion 41b side. The guide plate 47 has a bent portion with a part of the outer peripheral end portion extending to the outer peripheral side and protruding toward the guide plate 46 at a portion corresponding to the window portion of the flange portion 41b. The guide plate 46 is integrally fixed by 48. A portion of the guide plate 47 disposed in the window portion of the flange portion 41 b is disposed at an intermediate position of the coil spring 49 disposed in series. Thereby, the strength of the guide plates 47 and 46 can be ensured. The end surface of the guide plate 47 in the circumferential direction is a seating surface of the end portion of the coil spring 49. The seat surface has a coil central axis of the coil spring 49 and a convex portion protruding to the outer periphery. The protrusion preferably protrudes from the end of the coil spring 49 by 1.5 turns or more. The guide plate 47 is rotatable relative to the outer peripheral hub member 41, the disc plate 51, and the disc plate 52 within a circumferential range of the window portion of the flange portion 41b. The guide plate 47 reduces sliding hysteresis between the coil spring 49 and the disk plate 51 and the disk plate 52, and reduces wear of the coil spring 49.

  The rivet 48 is a member that integrally fixes the guide plate 46 and the guide plate 47 and is a component part of the damper portion 2. The rivet 48 integrally fixes the bent portions of the guide plate 46 and the guide plate 47 disposed in the window portion of the flange portion 41b.

  The coil spring 49 is a spring member housed in a window portion formed in the disc plate 51, the disc plate 52, and the flange portion 41 b, and is a component part of the damper portion 2. The coil spring 49 has one end in contact with the spring seat 50 and the other end in contact with the guide plate 46 and the guide plate 47. At least two coil springs 49 are accommodated in series in the window portion formed in the flange portion 41b. Thereby, low rigidity is possible. The coil spring 49 contracts when the disk plate 51, the disk plate 52, and the flange portion 41b rotate relative to each other, and absorbs shock due to the rotational difference between the disk plate 51, the disk plate 52, and the flange portion 41b. It is preferable to have a lubricant such as oil or grease around the coil spring 49. Thereby, the wear resistance of the coil spring 49 is improved.

  The spring seat 50 is a member housed in a window portion formed in the disk plate 51, the disk plate 52, and the flange portion 41b, and is disposed between the window portion and the end of the coil spring 49. 2 component parts. The spring seat 50 reduces the sliding hysteresis between the coil spring 49 and the disk plate 51, the disk plate 52, and the flange portion 41b, and reduces the wear of the coil spring 49. The spring seat 50 has a coil central axis of the coil spring 49 and a convex portion protruding to the outer periphery. The protrusion preferably protrudes from the end of the coil spring 49 by 1.5 turns or more.

  The disk plate 51 is an annular plate and is a component part of the damper portion 2. The disk plate 51 is arranged from the outer peripheral surface of the bearing 12 to the outer peripheral surface of the flywheel 53. The disk plate 51 has an inner peripheral end supported by the outer ring of the bearing 12. The disc plate 51 supports one end of the disc spring 20. The disk plate 51 is slidably in contact with the thrust member 28 on the surface facing the side plate 29. The disk plate 51 is slidably in contact with the thrust member 42 on the surface facing the outer peripheral hub member 41. The disk plate 51 has a window portion for accommodating the spring seat 50, the coil spring 49, and the elastic member 58, and one end in the circumferential direction of the window portion is in contact with the spring seat 50 so as to be able to contact and separate. The disc plate 51 is integrally fixed to the disc plate 52 by rivets 55 on the outer peripheral side of the damper portion 2, and is integrally fixed to the flywheel 53 together with the disc plate 52 by bolts 54. The disk plate 51 and the disk plate 52 are integrally fixed by a bolt 54 and a rivet 55 at the outer peripheral cylindrical portion of the flywheel 53 in order to arrange the damper portion 2 as much as possible on the outer periphery. For example, it is not performed at a portion between the coil spring 49 and the bolt 54. The disk plate 51 preferably has an elastic deformation in the axial direction of the inner peripheral end set to 0.5 mm or more. As a result, noise and vibration can be suppressed, and the number of springs can be reduced because the disk plate 51 itself acts in the axial direction, so that the disc spring 20 can be eliminated.

  The disk plate 52 is an annular plate and is a component part of the damper portion 2. The disk plate 52 is arranged from the outer peripheral surface of the inner peripheral cylindrical portion of the thrust member 13 to the outer peripheral surface of the flywheel 53. The disk plate 52 is in contact with the thrust member 13 at the inner peripheral end portion or in the vicinity thereof, and is engaged with the thrust member 13 so as not to rotate relative to the thrust member and to move in the axial direction. The disk plate 52 is slidably in contact with the thrust member 31 on the surface facing the side plate 30. The disk plate 52 is slidably in contact with the thrust member 43 on the surface facing the outer peripheral hub member 41. The disk plate 52 has a window portion for accommodating the spring seat 50, the coil spring 49, and the elastic member 58, and one end in the circumferential direction of the window portion is in contact with the spring seat 50 so as to be able to contact and separate. The disc plate 52 has a convex portion 52a protruding toward the flywheel 53 side of the window portion. The convex portion 52 a is accommodated in the concave portion 53 a of the flywheel 53. Thereby, the space of the coil spring 49 can be ensured. The disc plate 52 has a rivet hole 52 c for being integrally fixed to the disc plate 52 by a rivet 55 on the outer peripheral side of the damper portion 2, and is integrally fixed to the flywheel 53 together with the disc plate 52 by a bolt 54. Bolt hole 52b.

  The flywheel 53 is a ring-shaped input-side rotating member that is fixed to a rotating shaft (not shown) of an engine (not shown) by a bolt 56, for example. The flywheel 53 has a concave portion 53 a that accommodates the convex portion 52 a at a portion corresponding to the convex portion 52 a of the disc plate 52. Thereby, the space of the coil spring 49 can be ensured. The recess 53a may be a hole that penetrates the flywheel 53. A disc plate 51 and a disc plate 52 are integrally fixed to the flywheel 53 by bolts 54.

  The bolt 54 is a member for integrally fixing the disc plate 51 and the disc plate 52 to the flywheel 53.

  The rivet 55 is a member for integrally fixing the disc plate 51 and the disc plate 52.

  The bolt 56 is a member for fixing the flywheel 53 to a rotating shaft (not shown) of an engine (not shown).

  The rivet 57 is a member for fixing the control plate 15 and the control plate 24 together. The control plate 24 is caulked and fixed to the rivet 57 at the end on the disc plate 51 side. The control plate 15 is caulked and fixed to the rivet 57 at the end on the disc plate 52 side. The rivet 57 is configured such that the diameter of the intermediate portion is large, is not fixed to the flange portion 11a, and is movable within a hole portion 11b formed in the flange portion 11a. The rivet 57 is engaged with the outer peripheral portion of the control plate 17 at the intermediate portion so as not to be relatively rotatable and to be movable in the axial direction.

  The cushion member 58 is an elastic member disposed on the inner peripheral side of the coil spring 49 and is a component part of the damper portion 2. The cushion member 58 abuts against the spring seat 50 and the guide plates 46 and 47 when the coil spring 49 contracts, and absorbs shock due to the rotational difference between the disk plate 51, the disk plate 52, and the flange portion 41b.

  The input side components (disc plate 51, disc plate 52) on the input side of the coil spring 49 in the damper portion 2 are connected to the flywheel 53, and the output side components (outer peripheral hub member 41) on the output side of the coil spring in the damper portion 2 are connected. To 3% or more of the inertia of the entire apparatus. Thereby, noise and vibration are reduced, and it is not necessary to add a weight as inertia.

  The limiter unit 3 is set to be rotatable so as not to interfere with the disc plate 51 and the disc plate 52. Thereby, it can respond to high torque.

  According to the first embodiment, since the damper portion is arranged on the outer periphery of the limiter portion and the hysteresis portion, a space for the coil spring 49 is secured, which is advantageous for securing a bending space around the limiter portion 3 and the hysteresis portion 4. . Since the disk plate 51 is disposed on the outer periphery of the cylindrical portion of the inner peripheral hub member 11 via the bearing 12, the occurrence of eccentricity of the damper portion 2 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. 4A is a partial cross-sectional view schematically showing a configuration of a limiter unit and its periphery in a torque fluctuation absorber according to Embodiment 2 of the present invention, and FIG. 4B is a partial cross-sectional view between Y and Y ′. is there.

  In the second embodiment, the side plate 61 in which the side plate (29 in FIG. 2) and the holding member (26 in FIG. 2) of the first embodiment are integrated in the limiter portion. Other configurations are the same as those of the first embodiment.

  The side plate 61 is a ring-shaped member disposed on the outer periphery of the flange portion 11 a of the inner peripheral hub member 11 and is a component part of the limiter portion 3. An intermediate portion of the side plate 61 is cylindrical, and an inner spline 61a is formed on the inner peripheral surface thereof, and an outer spline 61b is formed on the outer peripheral surface thereof. The inner spline 61a is engaged with the outer spline 11c of the inner peripheral hub member 11 so as not to be rotatable relative to the inner spline 11c and to be movable in the axial direction. The outer spline 61b is engaged with the plate 33 and the plate 37 so as not to rotate relative to each other and to be movable in the axial direction. Due to the engagement by the inner spline 61a and the outer spline 61b, power transmission with high torque becomes possible. The inner peripheral portion of the side plate 61 has a flange shape, and is fixed to the side plate 30 and rivets (not shown) by caulking. The outer peripheral portion of the side plate 61 has a flange shape and supports one end of the disc spring 32. The side plate 61 can be formed by press molding.

  Here, the side plate 61 has the inner spline 61a and the outer spline 61b formed, but the side plate 30 may have a similar inner spline and outer spline formed.

  According to the second embodiment, the same effects as those of the first embodiment can be obtained, the holding member (26 in FIG. 2) of the first embodiment can be eliminated, the cost can be reduced, and the space can be saved. It is.

(Embodiment 3)
A torque fluctuation absorber according to Embodiment 3 of the present invention will be described with reference to the drawings. FIGS. 5A and 5B are (A) a first partial cross-sectional view and (B) a second partial cross-sectional view schematically showing a configuration of a limiter unit and its periphery in a torque fluctuation absorber according to Embodiment 3 of the present invention. is there.

  In the third embodiment, in the limiter portion, the lining plate (67, 70 in FIG. 5A, FIG. 5B) using an elastic material corresponding to the lining plate (35, 39 in FIG. 2) of the first embodiment. 82, 86), and the lining plate is fixed to a hub member (63 in FIG. 5A, 73 in FIG. 5B).

  Referring to FIG. 5A, the outer peripheral hub member 63 corresponding to the outer peripheral hub member (41 in FIG. 2) of the first embodiment is a ring-shaped plate. Lining plates 66 and 67 are caulked and fixed by rivets 64 on both surfaces in the vicinity of the inner peripheral end surface of the outer peripheral hub member 63. The lining plates 66 and 67 are made of an elastic material. Friction materials 34 and 36 are integrally fixed to both inner peripheral surfaces of the lining plate 66. Friction materials 38 and 40 are integrally fixed to both inner peripheral surfaces of the lining plate 67. Further, the guide plate 65 corresponding to the guide plate (47 in FIG. 2) of the first embodiment has an inner peripheral portion extending to the vicinity of the side plate 30 and partially overlaps the side plate 30. . Other configurations are the same as those of the first embodiment.

  Referring to FIG. 5B, an inner peripheral hub member 69 corresponding to the inner peripheral hub member (11 in FIG. 2) of the first embodiment is a lining plate 78 by rivets 70 on both surfaces in the vicinity of the outer peripheral end of the flange portion 69a. 82 are fixed by caulking. The lining plates 78 and 82 are made of an elastic material. Friction materials 77 and 79 are integrally fixed to both surfaces on the outer peripheral side of the lining plate 78. Friction materials 81 and 83 are integrally fixed to both surfaces on the outer peripheral side of the lining plate 82. Further, in the outer peripheral hub member 71 corresponding to the outer peripheral hub member (41 in FIG. 2) of the first embodiment, the side plates 73 and 74 are caulked and fixed by rivets 72 on both axial surfaces of the cylindrical portion. An inner spline 71a is formed on the inner surface. Between the side plate 73 and the side plate 74, a disc spring 75, a plate 76, a friction material 77, a lining plate 78, a friction material 79, a plate 80, a friction material 81, a lining plate 82, and a friction material 83 are provided from the side plate 73 side. It is arranged in the order. The disc spring 75 biases the plate 76 to the friction material 83 toward the side plate 74. The plate 76 is engaged with the inner spline 71a of the outer peripheral hub member 71 so as not to be relatively rotatable and axially movable, and is slidably in contact with the friction material 77. The plate 80 is engaged with the inner spline 71a of the outer peripheral hub member 71 so as not to be relatively rotatable and axially movable, and is in slidable contact with the friction materials 79 and 81. The side plate 74 is slidably in contact with the friction material 83. Other configurations are the same as those of the first embodiment.

  According to the third embodiment, the same effects as those of the first embodiment can be obtained, and the cost can be reduced by the simplification of the structure, and the hitting sound between components can be reduced. Further, the strength of the guide plate 65 is ensured.

(Embodiment 4)
A torque fluctuation absorber according to Embodiment 4 of the present invention will be described with reference to the drawings. FIG. 6 is a partial cross-sectional view schematically showing the structure of the limiter unit and its periphery in the torque fluctuation absorber according to Embodiment 4 of the present invention.

  In the fourth embodiment, the inner peripheral hub member 85 in which the side plate (30 in FIG. 2), the holding member (26 in FIG. 2), and the inner peripheral hub member (11 in FIG. 2) of the first embodiment are integrated in the limiter portion. And the plate (33 in FIG. 2), the friction material (34 in FIG. 2), the lining plate (35 in FIG. 2), the friction material (36 in FIG. 2), and the plate (37 in FIG. 2). This is abolished, and a pressure plate 88 is used between the friction material 38 and the disc spring 32. Other configurations are the same as those of the first embodiment.

  The inner peripheral hub member 85 has a flange portion 85a extending to the outer peripheral side. The flange portion 85a has a hole portion 85b for inserting the rivet 57 into the intermediate portion. The hole portion 85b is configured to be larger than the diameter of the intermediate portion of the rivet 57, and guides the relative rotation between the flange portion 85a and the rivet 57. In the flange portion 85a, a side plate 87 is caulked and fixed by a rivet 86 at a portion on the outer peripheral side of the hole portion 85b. The flange portion 85a extends to the outer peripheral side from the portion through which the rivet 86 passes, and is in contact with the friction material 40 so as to be slidable.

  The side plate 87 is caulked and fixed to the flange portion 85a by a rivet 86 at the inner peripheral portion. The side plate 87 supports one end of the disc spring 32 at the outer peripheral portion. The side plate 87 has a hole 87 a in a portion on the inner peripheral side with respect to the portion that is in contact with the disc spring 32. The convex portion 88a of the pressure plate 88 is inserted into the hole portion 87a. Thereby, the side plate 87 is engaged with the pressure plate 88 so as not to be relatively rotatable and to be movable in the axial direction.

  The pressure plate 88 is a ring-shaped plate disposed between the disc spring 32 and the friction material 38. The pressure plate 88 is urged toward the friction material 38 by the disc spring 32. The pressure plate 88 is slidably in contact with the friction material 38. The pressure plate 88 has a convex portion 88a that protrudes toward the side plate 87 at the inner peripheral portion. The convex portion 88 a is inserted through the hole portion 87 a of the side plate 87. Thereby, the pressure plate 88 is engaged with the side plate 87 so as not to rotate relative to the side plate 87 and to be movable in the axial direction.

  According to the fourth embodiment, the same effects as those of the first embodiment can be obtained, and the cost can be reduced by the simplification of the structure, and the hitting sound between components 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. 7 is a partial cross-sectional view schematically showing the configuration around the coil spring of the damper portion in the torque fluctuation absorber according to Embodiment 5 of the present invention.

  In the fifth embodiment, the two guide plates 46 and 47 arranged in the first embodiment are combined into one, and the other configurations are the same as those in the first embodiment.

  According to the fifth embodiment, the same effects as those of the first embodiment can be achieved, and space saving and cost reduction can be achieved.

(Embodiment 6)
A torque fluctuation absorber according to Embodiment 6 of the present invention will be described with reference to the drawings. FIG. 8 is a partial cross-sectional view schematically showing the configuration around the coil spring of the damper portion in the torque fluctuation absorber according to Embodiment 6 of the present invention.

  In the sixth embodiment, the guide plate (46 in FIG. 2), the guide plate (47 in FIG. 2), the rivet (48 in FIG. 2), and the cushion member (58 in FIG. 2) are abolished in the damper portion. The first coil spring 92 and the second coil spring 93 which are curved in advance are employed instead of the coil spring (49 in FIG. 2), and a guide member 94 for newly guiding the expansion and contraction of the first coil spring 92 is newly provided. It is. Other configurations are the same as those of the first embodiment.

  The first coil spring 92 is housed in a window formed in the disk plate (51 in FIG. 2), the disk plate 52, and the flange 41b. The first coil spring 92 is curved along the rotating direction of the disk plates 51 and 52 and the flange portion 41b. The first coil spring 92 is in contact with the spring seats 50 disposed at both ends. The first coil spring 92 contracts when the disk plates 51 and 52 and the flange portion 41b rotate relative to each other, and absorbs a shock due to a rotational difference between the disk plates 51 and 52 and the flange portion 41b. The first coil spring 92 contracts independently before the spring seat 50 abuts on both ends of the second coil spring 93, and after the spring seat 50 abuts on both ends of the second coil spring 93, the second coil spring 93. Shrink with. A second coil spring 93 is disposed inside the coil of the first coil spring 92. A plurality of guide members are attached to predetermined positions on the disk plate 52 side of the first coil spring 92.

  The second coil spring 93 is accommodated inside the coil of the first coil spring 92. The second coil spring 93 is curved along the rotating direction of the disk plates 51 and 52 and the flange portion 41b. Note that the bending rate may be changed between the spring both ends and the center position. The length of the second coil spring 93 is configured to be shorter than the length of the first coil spring 92. The second coil spring 93 absorbs shock due to the rotational difference between the disk plates 51 and 52 and the flange portion 41b due to contraction. When the disk plates 51, 52 and the flange portion 41 b rotate relative to each other, only the first coil spring 92 contracts before the spring seat 50 comes into contact with both ends of the second coil spring 93, and springs are applied to both ends of the second coil spring 93. After the sheet 50 comes into contact with the first coil spring 92, the sheet 50 contracts.

  The guide member 94 is a member that guides the first coil spring 92 along the outer peripheral wall surface of the disk plate 52 when the first coil spring 92 contracts. The guide member 94 is attached to a predetermined position on the outer peripheral portion of the first coil spring 92 that faces the outer peripheral wall surface of the disk plate 52. The guide member 94 in the vicinity of the spring seat 50 among the guide members 94 is preferably separated from the tip of the convex portion of the spring seat 50 by 1.5 turns or more. The guide member 94 slides along the outer peripheral wall surface of the disk plate 52 when the first coil spring 92 contracts.

  According to the sixth embodiment, the same effects as those of the first embodiment can be obtained, the damper portion can be reduced in rigidity, and the combination with the guide member 94 is improved. Further, the lubrication performance is improved, the end surface of the first coil spring 92 is in a floating state, and is not affected by centrifugal force or the like, so that noise and vibration can be suppressed.

(Embodiment 7)
A torque fluctuation absorber according to Embodiment 7 of the present invention will be described with reference to the drawings. 9A is a partial sectional view schematically showing a configuration around a coil spring of a damper portion in a torque fluctuation absorber according to Embodiment 7 of the present invention, and FIG. 9B is a combination of a coil spring and a sliding plate. It is a fragmentary sectional view.

  In the seventh embodiment, the disk plates 97 and 98 are used so as to cover the coil spring 49 arranged in the portion corresponding to the window portion of the disk plate (51 and 52 in FIG. 2) in the damper portion in the damper portion. Is. A sliding plate 96 is disposed between the outer peripheral surface of the coil spring 49 and the disk plates 97 and 98. Further, the thrust member (42 in FIG. 2) of the first embodiment is abolished, and a disc spring 99 is disposed instead. Other configurations are the same as those of the first embodiment.

  The sliding plate 96 is a plate disposed between the outer peripheral surface of the coil spring 49 and the disk plates 97 and 98. The sliding plate 96 guides the coil spring 49 along the outer peripheral wall surface of the disk plates 97 and 98 when the disc spring 99 contracts, and slidably contacts the coil spring 49 and the disk plates 97 and 98.

  The disk plate 97 is in contact with one end of the disc spring 99. The disk plate 97 has a portion that accommodates the coil spring 49 on the outer peripheral side of the contact portion with the disc spring 99, and contacts the spring seat 50 disposed at the end of the coil spring 49 so as to be able to contact and separate. A portion of the disk plate 97 that accommodates the coil spring 49 has no hole communicating with the outside, and a lubricant such as oil or grease is sealed inside. The disc plate 97 is welded to the disc plate 98 at a portion on the outer peripheral side of the coil spring 49 so that the lubricant does not flow outside. Instead of welding, a seal member (not shown) may be interposed between the disk plates 97 and 98.

  The disk plate 98 is slidably in contact with the thrust member 43. The disk plate 98 has a portion that accommodates the coil spring 49 on the outer peripheral side of the contact portion with the thrust member 43, and contacts the spring seat 50 disposed at the end of the coil spring 49 so as to be able to contact and separate. A portion of the disk plate 98 that houses the coil spring 49 has no hole that communicates with the outside, and a lubricant such as oil or grease is sealed inside. The disc plate 98 is welded to the disc plate 97 at a portion on the outer peripheral side of the coil spring 49 so that the lubricant does not flow outside. Instead of welding, a seal member (not shown) may be interposed between the disk plates 97 and 98.

  The disc spring 99 is a ring-shaped spring member disposed between the outer peripheral hub member 41 and the disk plate 97. One end of the disc spring 99 is supported by the disc plate 97, and the other end biases the cylindrical portion of the outer peripheral hub member 41 toward the thrust member 43 side. One end of the disc spring 99 is in contact with the disk plate 97 over the entire circumference, and one end of the disc spring 99 is in contact with the outer peripheral hub member 41 over the entire circumference, so that it is enclosed on the coil spring 49 side. It is difficult for the lubricant to flow out to the inner peripheral side of the outer peripheral hub member 41. Note that the thrust member 43 on the opposite side of the disc spring 99 is also in contact with the outer peripheral hub member 41 and the disk plate 98 over the entire circumference, so that the lubricant enclosed on the coil spring 49 side is inside the outer peripheral hub member 41. Difficult to flow out to the circumference.

  According to the seventh embodiment, the same effects as those of the first embodiment are obtained, and the wear resistance of the coil spring 49 is improved by the lubricant. In addition, since the spring periphery is sealed, the sealed lubricant is prevented from flowing out. Further, since the accommodating portion of the coil spring 49 in the disk plates 97 and 98 is cut off from the outside, entry of foreign matter such as dust and water can be prevented, and deterioration of the performance of the apparatus and generation of rust can be prevented. .

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 figure which showed typically the relationship between the rivet and inner peripheral hub member in the torque fluctuation absorber which concerns on Embodiment 1 of this invention. It is the (A) partial sectional view which showed typically the structure of the limiter part in the torque fluctuation absorber which concerns on Embodiment 2 of this invention, and its periphery, (B) The partial sectional view between YY '. It is the (A) 1st fragmentary sectional view and the (B) 2nd fragmentary sectional view which showed typically the structure of the limiter part and its periphery in the torque fluctuation absorber concerning Embodiment 3 of the present 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, and its periphery. It is the fragmentary sectional view which showed typically the structure around the coil spring of the damper 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 around the coil spring of the damper part in the torque fluctuation absorber which concerns on Embodiment 6 of this invention. FIG. 7A is a partial cross-sectional view schematically showing a configuration around a coil spring of a damper portion in a torque fluctuation absorber according to Embodiment 7 of the present invention, and FIG. 7B is a partial cross-sectional view of a combination of a coil spring and a sliding plate. is there.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Torque fluctuation absorber 2 Damper part 3 Limiter part 4 Hysteresis part 11 Inner peripheral hub member (output side rotating member)
11a Flange 11b Hole 11c Outer spline 12 Bearing (bearing)
13 thrust member 14 thrust member 15 control plate 16 disc spring 17 control plate 18 thrust member 19 thrust member 20 disc spring 21 intermediate plate 22 disc spring 23 thrust member 24 control plate 25 thrust member 26 holding member 26a inner spline 26b outer spline 27 rivet 28 Thrust member 29 Side plate 30 Side plate 31 Thrust member 32 Disc spring 33 Plate 34 Friction material 35 Lining plate 36 Friction material 37 Plate 38 Friction material 39 Lining plate 40 Friction material 41 Outer peripheral hub member 41a Inner spline 41b Flange portion 42 Thrust member 43 Thrust member 44 Thrust member 45 Thrust member 46 Guide plate 46a Rib 47 Guide plate Rate 47a Rib 48 Rivet 49 Coil spring 50 Spring seat 51 Disc plate 52 Disc plate 52a Convex portion 52b Bolt hole 52c Rivet hole 53 Flywheel (input side rotating member)
53a Recess 54 Bolt 55 Rivet 56 Bolt 57 Rivet 58 Cushion member 61 Side plate 61a Inner spline 61b Outer spline 63 Outer hub member 64 Rivet 65 Guide plate 66 Lining plate 67 Lining plate 69 Inner hub member 69a Flange portion 70 Rivet 71 Outer hub Member 71a Inner spline 72 Rivet 73 Side plate 74 Side plate 75 Disc spring 76 Plate 77 Friction material 78 Lining plate 79 Friction material 80 Plate 81 Friction material 82 Lining plate 83 Friction material 85 Inner peripheral hub member 85a Flange portion 85b Hole portion 86 Rivet 87 Side plate 87a Hole portion 88 Pressure plate 88a Convex portion 90 Outer peripheral hub member 90a Flange portion 92 1 the coil spring 93 the second coil spring 94 the guide member 96 sliding plate (guide member)
97 Disc plate 98 Disc plate 99 Belleville spring

Claims (14)

In the torque fluctuation absorber having a damper part and a limiter part in the power transmission path from the input side rotating member to the output side rotating member,
2. The torque fluctuation absorber according to claim 1, wherein the damper part is disposed on an outer periphery of the limiter part. Having a hysteresis part,
The torque fluctuation absorber according to claim 1, wherein the damper portion, the limiter portion, and the hysteresis portion are arranged in this order from the outer peripheral side. Having a hysteresis part,
The torque fluctuation absorber according to claim 1, wherein the damper portion, the hysteresis portion, and the limiter portion are arranged in this order from the outer peripheral side. The damper portion includes, as components, two disk plates, a hub member, and a spring that attenuates vibration caused by relative rotation of the disk plate and the hub member,
4. The torque fluctuation absorber according to claim 1, wherein each of the disk plates is integrally fixed to a portion in the vicinity of an outer peripheral end portion of the input side rotation member by a bolt.   The limiter unit has a structure in which a multi-plate structure in which a plurality of plates and friction materials are alternately arranged in the axial direction is sandwiched, and the fluctuation torque between the input side rotating member and the output side rotating member 5. The torque fluctuation absorber according to claim 1, wherein when the torque reaches a predetermined value, the power transmission is interrupted by slipping. 6.   6. The torque fluctuation absorber according to claim 5, wherein the multi-plate structure is disposed between two side plates and is pressed by a spring. The odd-numbered rows of plates in the multi-plate structure are engaged with a holding member that fixes the side plate so as not to be relatively rotatable and axially movable.
The even-numbered plates in the multi-plate structure engage with the hub member so as not to be relatively rotatable and axially movable,
The torque fluctuation absorber according to claim 6, wherein the holding member is configured to engage with the output-side rotating member so as not to be relatively rotatable and axially movable. The side plates are integrally fixed to each other,
The odd rows of plates in the multi-plate structure are engaged with at least one of the side plates so as not to be relatively rotatable and axially movable,
The even-numbered plates in the multi-plate structure engage with the hub member so as not to be relatively rotatable and axially movable,
The torque fluctuation absorber according to claim 6, wherein at least one of the side plates is configured to engage with the output-side rotation member so as not to be relatively rotatable and axially movable.   At least one of the side plates has a press-molded configuration, and outer splines that engage with odd-numbered plates of the multi-plate structure are formed on the outer peripheral surface of the cylindrical portion, and the inner periphery of the cylindrical portion 9. The torque fluctuation absorber according to claim 8, wherein an inner spline that engages with the output side rotation member is formed on a surface.   7. The torque fluctuation absorber according to claim 5, wherein the odd-numbered or even-numbered plates of the multi-plate structure are made of an elastic material deformable in the axial direction.   6. The torque fluctuation absorber according to claim 1, wherein the limiter unit is configured so that the output-side rotation member and the friction material are slidably in contact with each other.   The torque fluctuation absorber according to any one of claims 1 to 11, wherein the hysteresis section has a hysteresis structure that fluctuates according to an operating state of torque fluctuation of the input-side rotating member.   12. The torque fluctuation absorber according to claim 11, wherein the hysteresis portion has a hysteresis structure that changes when a torsional amplitude of the input side rotating member and the output side rotating member becomes a predetermined value or more. In the hysteresis portion, a control plate and a thrust member are disposed between the disk plate and the output side rotating member,
The output side rotating member is sandwiched between the control plates,
The control plate is caulked and fixed to a rivet,
The rivet is inserted through a hole formed in the output side rotation member,
The hysteresis between the output-side rotating member and the control plate is configured to increase when torsional vibration exceeding a clearance region between the hole and the rivet occurs. Torque fluctuation absorber.

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