JP6278469B2 - Torque fluctuation absorber - Google Patents

Description

  The present invention includes a pair of holder plates coupled to each other, and a driven plate disposed coaxially between the pair of holder plates to enable power transmission between the holder plates. The present invention relates to a torque fluctuation absorber that enables a holder plate and the driven plate to rotate relative to each other so as to generate two stages of hysteresis.

  In order to attenuate low torque vibrations and absorb large torque fluctuations that occur when starting and stopping the engine, a pair of holder plates to which power is transmitted from the engine and a driven plate connected to the transmission side are provided. Patent Document 1 and Patent Document 2 disclose a torque fluctuation absorber that enables a plate and a driven plate to be rotated relative to each other so as to generate two stages of hysteresis, and is provided between the engine and the transmission. .

Japanese Patent No. 4774775 JP 2010-230098 A

  In the one disclosed in Patent Document 1, in order to increase the difference between low hysteresis and high hysteresis, a large number of disc springs and a large number of plates are arranged on both sides of the driven plate, and the number of parts is reduced. There is a problem of increasing the size as the number increases.

  Moreover, in what is disclosed by the said patent document 2, since it has the structure by which a high friction member is arrange | positioned only at the one side of a driven plate, size reduction is possible, but the difference of low hysteresis and high hysteresis becomes small. End up. In addition, the slide member itself has a function as a low friction member, and the slide member is required to have strength. Therefore, the degree of freedom in selecting a material for forming the slide member is limited.

  The present invention has been made in view of such circumstances, and it is possible to increase the difference between low hysteresis and high hysteresis while avoiding an increase in the number of parts and an increase in size, and an increase in the degree of freedom of material selection. It is an object of the present invention to provide a torque fluctuation absorbing device.

In order to achieve the above object, the present invention provides a pair of holder plates coupled to each other and a driven coaxially disposed between the pair of holder plates to enable power transmission between the holder plates. And a pair of the holder plate and the driven plate that can rotate relative to each other so as to generate a two-stage hysteresis. A ring plate portion that constitutes at least a part of a resin-made slide member that is allowed to rotate, and a high-friction member that is bonded to the ring plate portion and makes contact with the driven plate while disabling relative rotation with the slide member And a resin-made low sandwiching the ring plate portion with the high friction member while allowing relative rotation with the slide member A rubbing member is disposed between the pair of holder plates and the driven plate, and one of the pair of holder plates and one of the low friction members disposed on the one holder plate side. A resilient means having a contact surface that contacts the low friction member and rotates together with the one holder plate is interposed between the low friction member and the one of the holders. A metal set plate which is subjected to the same surface treatment as the plate and is connected to the one holder plate so as not to be relatively rotatable and axially movable, and has the contact surface, and the one holder plate and the set plate A disc spring interposed therebetween, and a contact portion of the disc spring with the set plate is the set plate. Is formed in a curved shape bulging up side, mutually spaced said ring plate portion of the other of the low friction member and the other of the holder plate to the so as to contact one of the holder plate and said one slide member The first feature is to exert the resilience to be applied.

The present invention also includes a pair of holder plates coupled to each other, and a driven plate disposed coaxially between the pair of holder plates to enable power transmission between the holder plates. In the torque fluctuation absorbing device that enables the holder plate and the driven plate to rotate relative to each other so as to generate two stages of hysteresis, a resin made of a resin that is allowed to rotate relative to the holder plate at a predetermined angle. A ring plate portion constituting at least a part of the slide member, a high friction member joined to the ring plate portion and in contact with the driven plate while disabling relative rotation with the slide member, and the slide member A resin-made low-friction member that sandwiches the ring plate portion with the high-friction member while allowing relative rotation, and a pair of front Between the holder plate and the driven plate, between one holder plate of the pair of holder plates and one low friction member arranged on the one holder plate side of the low friction member Further, a resilient means having a contact surface that contacts the one low friction member and rotates together with the one holder plate is interposed, and the resilient means connects the other low friction member to the other holder plate. The one holder plate and the ring plate portion of the one slide member are brought into contact with each other to exert a resilience force, and one of the slide member and the holder plate has a predetermined angle therebetween. A rotation-preventing protrusion having a protrusion-side abutment surface inclined so as to form on the circumferential direction side, and protruding the slide member and the An anti-rotation recess that accommodates the anti-rotation protrusion by allowing relative rotation of the rudder plate at a predetermined angle extends parallel to the protrusion-side contact surface and can contact the protrusion-side contact surface. The recessed protrusions of one set of the pair of the holder plate and the pair of slide members are formed on the other side of the slide member and the holder plate so as to have the recessed-side contact surfaces on both sides in the circumferential direction. The second feature is that the width along the circumferential direction is set differently from the width along the circumferential direction of the anti-rotation protrusion of the other set.

According to the present invention, in addition to the configuration of the second feature, the elastic means is connected to the one holder plate so as to be relatively non-rotatable and axially movable by being subjected to the same surface treatment as the one holder plate. And a metal set plate having the contact surface, and a disc spring interposed between the one holder plate and the set plate, and the contact portion of the disc spring with the set plate is the A third feature is that it is formed in a curved shape bulging toward the set plate.

In the present invention, in addition to the configuration of the first or third feature, the contact portion of the disc spring is disposed at a position corresponding to the center of the high friction member and the low friction member in the radial direction of the driven plate. This is a fourth feature.

In addition to any one of the configurations of the first to fourth features, the present invention is a latch that engages an engagement protrusion formed on one of the ring plate portion of the slide member and the high friction member. A fifth feature is that the other is molded together with one of the slide member and the high friction member while forming a recess in the other of the slide member and the high friction member.

In addition to any of the configurations of the first to fifth features, the present invention is configured so that the low-friction member has the same shape as the front and back so that the low-friction member contacts the ring plate portion with a smaller contact area than the high-friction member. However, the sixth feature is that it is formed in a ring shape.

According to the present invention, in addition to any one of the first to sixth features, the resilient means is disposed on the opposite side of the driven plate with respect to the drive plate connected to the pair of holder plates. Is the seventh feature .

According to the first and second features of the present invention, while the holder plate is relatively rotated by a predetermined angle with respect to the slide member having at least the ring plate portion disposed between the pair of holder plates and the driven plate, the A low hysteresis due to the friction member is obtained, and if relative rotation beyond that occurs, in addition to the low hysteresis, a high hysteresis is caused by the high friction member, and a two-stage hysteresis can be obtained. Further, a low friction member and a high friction member are disposed on both sides of the ring plate portion of the pair of slide members, respectively, and one of the low friction members is disposed on one holder plate side of the low friction member. Therefore, the difference between the low hysteresis and the high hysteresis can be increased while avoiding an increase in the number of parts and an increase in size. Moreover, as the resin forming the slide member, a resin having high strength and excellent wear resistance may be selected, and the degree of freedom in material selection can be increased. Further, by making the slide member made of resin, it is possible to suppress the occurrence of a collision sound when the relative rotation of the holder plate and the slide member is restricted.

In addition to the above features, according to the first feature of the present invention, the resilient means is composed of a metal set plate and a disc spring interposed between the one holder plate and the set plate. Thus, buckling and wear due to contact between the disc spring and the low friction member can be prevented. Further, the set plate is connected to one holder plate so as not to be relatively rotatable and axially movable, and the disc spring does not relatively move in the circumferential direction of the holder plate. Since the contact portion with the set plate is formed in a curved shape that swells toward the set plate, the wear can be further suppressed. Moreover, since the set plate is subjected to the same surface treatment as that of the one holder plate, the frictional force generated by the low friction member can be equalized on both sides of the driven plate. Further, according to the second feature, the detent projection protruding from one of the slide member and the holder plate is housed in the detent recess formed in the other of the slide member and holder plate, and the detent projection A protrusion-side contact surface on both sides in the circumferential direction, and a recess-side contact surface on the both sides in the circumferential direction that makes it possible to contact the protrusion-side contact surface with a predetermined angle between them. Since it is formed so as to be inclined, it is possible to set a relatively large contact area between the projecting part side and the recessed part side contact surface, and to reduce the contact surface pressure. Further, the width along the circumferential direction of the one set of detent projections and the width along the circumferential direction of the other set of detent projections are different from each other, thereby preventing erroneous assembly. .

Further, according to the third feature of the present invention, an effect similar to the effect obtained by combining the first and second features can be achieved.

According to the fourth aspect of the present invention, since the disc spring contacts the set plate at a position corresponding to the center of the high friction member and the low friction member in the radial direction of the driven plate, the low friction member and the high friction member The obtained frictional force can be stabilized.

According to the fifth aspect of the present invention, since one of the slide member and the high friction member is molded with the other, the cost for eliminating the adhesive for joining the high friction member to the slide member is reduced. Since the engagement protrusion formed on one of the ring plate portion of the slide member and the high friction member engages with the locking recess formed on the other of the slide member and the high friction member, the high friction member Even if a situation where the detachment from the slide member occurs, the idling of the high friction member relative to the slide member does not occur.

According to the sixth aspect of the present invention, since the low friction member is ring-shaped and there is no portion where load such as detent is applied to the slide member, the material of the low friction member is given priority to obtain a low friction coefficient. It is possible to avoid the occurrence of insufficient strength of the low friction member even if selected, and since the low friction member has the same shape on the front and back, it is possible to correspond to any of a pair of slide members, Since the low friction member contacts the slide member with a smaller contact area than the high friction member, a lower low friction force can be obtained.

According to the seventh feature of the present invention, since the resilient means is arranged on the opposite side of the driven plate with respect to the drive plate, it follows a plane orthogonal to the rotation axis as much as possible in order to avoid deformation due to the action of centrifugal force. Thus, it is possible to prevent the torque fluctuation absorber desirably designed as described above from being swollen due to the arrangement of the elastic means. That is, when the elastic means is arranged on the drive plate side with respect to the driven plate, the center of the torque fluctuation absorber is set on the mission side to avoid interference with the bolt for fastening the drive plate to the engine side rotating shaft. In order to suppress the increase in the axial dimension of the torque fluctuation absorbing device, it is conceivable to have a crank-type structure close to the engine side. The centrifugal force to be deformed in the orthogonal direction acts on the torque fluctuation absorbing device, and measures such as increasing the plate thickness of the members constituting the torque fluctuation absorbing device are necessary. Such a countermeasure becomes unnecessary by arranging the driven plate on the opposite side with respect to the driven plate .

It is a longitudinal cross-sectional view of a torque fluctuation absorber. FIG. 2 is an enlarged view of a portion indicated by an arrow 2 in FIG. 1. It is sectional drawing which follows the 3-3 line of FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 3. First, in FIG. 1, the torque fluctuation absorber 4 is provided between an engine and a transmission of a power unit mounted on a vehicle. First and second holder plates 5 and 6 to which power is transmitted from the engine, and a driven plate 7 connected to the transmission side, and the first and second holder plates 5 and 5 are provided. 6 and the driven plate 7 can be rotated relative to each other so as to generate two stages of hysteresis.

  The outer peripheral part of the first holder plate 5 arranged on the mission side and the outer peripheral part of the second holder plate 6 arranged on the engine side are mutually connected by rivets 8 arranged at intervals in the circumferential direction. The second holder plate 6 is integrally formed with an overhanging portion 6 a that projects further outward in the radial direction than the outer periphery of the first holder plate 5. A mass ring 9 is in contact with the projecting portion 6 a from the side opposite to the first holder plate 5, and the projecting portion 6 a and the mass ring 9 are coupled by a plurality of rivets 10. Further, an outer peripheral portion of a drive plate 13 fastened to the engine-side rotating shaft 11 with a plurality of bolts 12 is disposed so as to sandwich the mass ring 9 between the projecting portion 6a, and the mass ring 9 and the drive plate 13 are arranged. Are fastened by a plurality of bolts 14.

  The inner peripheral portion of the driven plate 7 is fixed to the outer periphery of a cylindrical boss member 22 that is coaxially fixed to the mission-side rotating shaft 15 by welding or the like. The driven plate 7 includes first and second holder plates. The power transmission between the first and second holder plates 5 and 6 is made possible coaxially.

  The first and second holder plates 5, 6 are provided with a plurality of outer guide holes 16, 17 that are paired side by side in the axial direction in the circumferential direction, and between the outer guide holes 16, 17. An inner guide hole 18 to be disposed is provided in the driven plate 7.

  A pair of spring receiving members 19 are slidable in the outer guide holes 16 and 17 and the inner guide hole 18 so as to extend between the guide holes 16, 17 and 18 and are spaced apart in the circumferential direction. The coil-shaped damper spring 20 that is compressed between the spring receiving members 19 is sandwiched by the pair of spring receiving members 19 when the damper spring 20 is compressed and deformed by a predetermined amount. The secondary damper spring 21 made of rubber is accommodated so as to be pressed.

  Referring also to FIG. 2, a first resin plate between the first holder plate 5 and the driven plate 7 is allowed to rotate relative to the first holder plate 5 at a predetermined angle. A ring plate portion 24a constituting at least a part of the slide member 24 is disposed, and a relative rotation of a predetermined angle between the second holder plate 6 and the driven plate 7 is performed between the second holder plate 6 and the driven plate 7. A ring plate portion 25a that constitutes at least a part of the allowable resin-made second slide member 25 is disposed.

  In this embodiment, the first slide member 24 is connected to the ring plate portion 24a at a right angle to the inner periphery of the ring plate portion 24a and extends to the opposite side of the driven plate 17 to the first holder plate. The second slide member 25 is integrally connected to the ring plate portion 25a and the inner periphery of the ring plate portion 25a at a right angle, and the driven plate 17 has a cylindrical portion 24b inserted through the central portion of the ring plate portion 25a. The first and second slide members 24 and 25 have high strength and wear resistance. The cylindrical portion 25b extends in the opposite direction to the cylindrical portion 25b and is inserted into the center portion of the second holder plate 6. It is made of a resin with excellent properties.

  The first and second slide members 24, 25 are provided on both sides in the axial direction of the ring plate portions 24a, 25a while disabling relative rotation with the first and second slide members 24, 25. , 25 a and the high friction members 26, 27 which are in contact with the driven plate 7, respectively, and the high friction members 26, 27 while allowing relative rotation between the first and second slide members 24, 25. Low-friction members 28 and 29 made of resin sandwiching the ring plate portions 24a and 25a are disposed, respectively. The high-friction members 26 and 27 are made of a resin having a large friction coefficient, and the low-friction member 28 , 29 are formed of a resin having a small friction coefficient.

  One of the ring plate portions 24a and 25a of the first and second slide members 24 and 25 and the high friction members 26 and 27. In this embodiment, the ring plate portions 24a and 25a have engagement protrusions 30 and 31. Are integrally formed, and in the present embodiment, the engagement protrusions 30 and 31 are engaged with the other of the ring plate portions 24a and 25a and the high friction members 26 and 27. Locking recesses 32 and 33 are formed, and after the first and second slide members 24 and 25 and one of the high friction members 26 and 27 are molded, the first and second slide members 24 and 25 are formed. 25 and one of the high friction members 26 and 27, and the other is molded.

  The low friction members 28 and 29 are in contact with the ring plate portions 24a and 25a of the first and second slide members 24 and 25 with a contact area that is as small as possible than the high friction members 26 and 27. It is formed in a ring shape with the same shape on both sides.

  Referring also to FIG. 3, a first detent projection 34 is provided on one of the first holder plate 5 and the first slide member 24 so as to project the first holder plate 5 and the first slide. On the other side of the member 24, a first detent recess 35 is formed that allows the first holder plate 5 and the first slide member 24 to rotate relative to each other at a predetermined angle and accommodates the first detent projection 34. The second holder plate 6 and the second slide member 25 are provided with a second detent projection 36 on the other side, and the other of the second holder plate 6 and the second slide member 25 is provided on the other side. A second anti-rotation recess 37 that accommodates the second anti-rotation protrusion 36 while allowing the relative rotation of the second holder plate 6 and the second slide member 25 by a predetermined angle is formed. In the embodiment, the first scan A first detent projection 34 is provided on the id member 24, a first detent recess 35 is formed on the first holder plate 5, and a second detent projection 36 is formed on the second slide member 25. And a second rotation-preventing recess 37 is formed in the second holder plate 6.

  The first and second anti-rotation projections 34 and 36 are integrally provided at a plurality of locations at equal intervals in the circumferential direction of the cylindrical portions 24b and 25b in the first and second slide members 24 and 25. A plurality of first and second anti-rotation recesses 35, 37 are formed so as to protrude outward, and are spaced at equal intervals in the circumferential direction of the inner periphery of the first and second holder plates 5, 6. Formed in place.

  The first detent projection 34 is formed to have a first projection side abutment surface 34a inclined at a first predetermined angle α therebetween on the circumferential direction side, The stopper recess 35 has first recess-side contact surfaces 35a parallel to the first projection-side contact surface 34a and capable of contacting the first projection-side contact surface 34a on both sides in the circumferential direction. Formed.

  The second detent projection 36 is formed so as to have a second projection side abutment surface 36a inclined at a second predetermined angle β between them on the circumferential direction side. The rotation-preventing recess 37 has second recess-side contact surfaces 37a that are parallel to the second protrusion-side contact surface 36a and that can contact the second protrusion-side contact surface 36a on both sides in the circumferential direction. In this embodiment, the second predetermined angle β is the same as the first predetermined angle α.

  Moreover, the width W1 of the first holder plate 5 and the first slide member 24 along the circumferential direction of the first detent projection 35, and the second holder plate 6 and the second slide member 25 are set. The width W2 along the circumferential direction of the second anti-rotation projection 36 is set differently from each other. In this embodiment, the second anti-rotation recess 37 of the first anti-rotation projection 35 is set. W1> W2 is set so that it cannot be accommodated in the vehicle.

  The first holder plate 5 which is one of the first and second holder plates 5 and 6, and one low friction member which is disposed on the first holder plate 5 side among the low friction members 28 and 29. The resilient means 40 having a contact surface 43 that contacts the one low friction member 28 and rotates together with the first holder plate 5 is provided between the drive plate 13 and the driven plate 7. The resilient means 40 is arranged so that the other low friction member 29 contacts the second holder plate 6 and the first holder plate 5 and the first slide member. The elastic force which separates 24 from each other is exhibited.

  The elastic means 40 is made of metal having the same contact surface 40 as the first holder plate 5 is subjected to the same surface treatment and is connected to the first holder plate 5 so as not to be relatively rotatable and axially movable. And a disc spring 42 interposed between the first holder plate 5 and the set plate 41.

  The set plate 41 has a contact surface 43 in contact with the low friction member 28 so as to sandwich the low friction member 28 between the first slide member 24 and the low friction member 28 and the first friction member 28. A ring plate-shaped set plate main portion 41a disposed between the holder plates 5 and a plurality of, for example, two locations on the inner periphery of the set plate main portion 41a, which are connected at right angles to the opposite side to the low friction member 28. The extending arm portion 41b is formed so as to be integrally formed, and a restriction recess 44 is formed in the inner peripheral portion of the first holder plate 5 so that the extending arm portion 41b is not allowed to rotate in the circumferential direction. Provided.

  The inner peripheral end portion of the disc spring 42 contacts the set plate main portion 41a of the set plate 41 as a contact portion 45. The contact portion 45 is formed in a curved shape that swells toward the set plate 41 side. Is done.

  Moreover, the contact portion 45 of the disc spring 42 corresponds to the center of the high friction members 26 and 27 and the low friction members 28 and 29 on both sides of the first slide member 24 in the radial direction of the driven plate 7. Placed in.

  Next, the operation of this embodiment will be described. The first and second slide members 24 made of resin that are allowed to rotate at a predetermined angle with respect to the first and second holder plates 5 and 6, High friction members 26 and 27 which are in contact with the driven plate 7 by being joined to the ring plate portions 24a and 25a while disabling relative rotation between the ring plate portions 24a and 25a respectively included in the ring 25 and the slide members 24 and 25. And the low friction members 28, 29 made of resin that sandwich the ring plate portions 24a, 25a between the high friction members 26, 27 while allowing relative rotation with the first and second slide members 24, 25. Are respectively disposed between the first and second holder plates 5 and 6 and the driven plate 7, and the first holder plate among the first and second holder plates 5 and 6 is disposed. Between the first friction plate 28 and the one low friction member 28 disposed on the first holder plate 5 side of the low friction members 28 and 29, and the first low friction member 28. A resilient means 40 having a contact surface 43 that rotates together with the holder plate 5 is interposed between the first holder and the resilient means 40 so that the other low friction member 29 is brought into contact with the second holder plate 6. Since the elastic force separating the plate 5 and the first slide member 24 from each other is exerted, the first and second holder plates 5 and 6 are at a predetermined angle with respect to the first and second slide members 24 and 25. During the relative rotation, only the low friction members 28 and 29 cause low hysteresis. When the relative rotation further occurs, the high friction members 26 and 27 provide high hysteresis in addition to the low hysteresis. It is possible to obtain the hysteresis, while avoiding an increase and enlargement of the number of parts, it is possible to increase the difference in low hysteresis and high hysteresis. Moreover, as the resin for forming the first and second slide members 24 and 25, a resin having high strength and excellent wear resistance can be selected, and the degree of freedom in material selection can be increased. When the second slide members 24 and 25 are made of resin, the relative rotation between the first and second holder plates 5 and 6 and the first and second slide members 24 and 25 is restricted. Generation of impact sound can be suppressed to a low level.

  Further, the locking recesses 32 and 33 for engaging the engaging protrusions 30 and 31 formed on one of the first and second slide members 24 and 25 and the high friction members 26 and 27 are provided in the first and second slides. Since the other of the first and second slide members 24 and 25 and one of the high friction members 26 and 27 are molded while being formed on the other of the members 24 and 25 and the high friction members 26 and 27, Cost reduction can be achieved by eliminating the need for an adhesive for joining the high friction members 26 and 27 to the first and second slide members 24 and 25, and the high friction members 26 and 27 are the first and second high friction members 26 and 27. Even if the sliding members 24 and 25 are separated from each other, the high friction members 26 and 27 do not idle with respect to the first and second sliding members 24 and 25.

  Further, since the low friction members 28 and 29 are formed in a ring shape, the low friction members 28 and 29 do not have a portion where a load such as a detent is applied to the first and second slide members 24 and 25, and the low friction members 28 and 29 are low. Even if the material of the low friction members 28 and 29 is selected with priority given to obtaining a friction coefficient, there is no shortage of strength, and the low friction members 28 and 29 have a smaller contact area than the high friction members 26 and 27. Lower frictional force can be obtained by contacting the first and second slide members 24 and 25. In addition, since the low friction members 28 and 29 have the same shape as the front and back, both the first and second slide members 24 and 25 can be supported.

  Further, since the resilient means 40 is disposed on the opposite side of the driven plate 7 to the drive plate 13 connected to the first and second holder plates 5 and 6, deformation due to the action of centrifugal force is avoided. Therefore, it is possible to prevent the torque fluctuation absorbing device 4 that is desirably designed so as to be along a plane orthogonal to the rotation axis as much as possible from being swollen due to the arrangement of the elastic means 40. That is, when the resilient means 40 is disposed on the drive plate 13 side with respect to the driven plate 7, the torque fluctuation absorbing device 4 is arranged to avoid interference with the bolt 12 for fastening the drive plate 13 to the engine-side rotating shaft 11. In the case of a crank type structure in which the center part of the engine is inflated toward the transmission side and the outer peripheral part of the torque fluctuation absorber 4 is close to the engine side in order to suppress an increase in the axial dimension. Therefore, it is necessary to take measures such as increasing the plate thickness of the members constituting the torque fluctuation absorbing device 4 by applying a centrifugal force to the torque fluctuation absorbing device 4 to deform in the direction orthogonal to the rotation axis during rotation. However, such a countermeasure becomes unnecessary by the elastic means 40 being disposed on the opposite side of the driven plate 7 from the drive plate 13.

  The elastic means 40 includes a metal set plate 41 and a disc spring 42 interposed between the first holder plate 5 and the set plate 41, and the disc spring 42 is a low friction member 28. It is possible to prevent buckling and wear due to contact with the surface. The set plate 41 is connected to the first holder plate 5 so as not to be relatively rotatable and axially movable. The disc spring 41 does not relatively move in the circumferential direction of the first holder plate 5, and the first plate It is possible to suppress wear at the contact portion between the holder plate 5 and the set plate 41 and the disc spring 42, and a curved shape in which the contact portion 45 of the disc spring 42 with the set plate 41 swells toward the set plate 41 side. Therefore, wear can be further suppressed. In addition, since the set plate 41 is subjected to the same surface treatment as the first and second holder plates 5 and 6, the frictional force generated by the low friction members 28 and 29 can be equalized on both sides of the driven plate 7. .

  In addition, the contact portion 45 of the disc spring 42 is disposed at a position corresponding to the center of the high friction members 26 and 27 and the low friction members 28 and 29 in the radial direction of the driven plate 7. The frictional force obtained by the 28 and 29 and the high friction members 26 and 27 can be stabilized.

  Further, the first and second slide members 24 and 25 and the first and second slide members 24 and 25 which are one of the first and second holder plates 5 and 6 have a first predetermined angle α therebetween. First and second detent projections 34, 36 having first and second projection-side abutment surfaces 34a, 36a inclined in a circumferential direction on the circumferential direction side are provided to project. The first and second rotation members 24 and 25 and the first and second holder plates 5 and 6 are allowed to rotate relative to each other by a predetermined angle to accommodate the first and second rotation-preventing protrusions 34 and 36. The anti-rotation recesses 35 and 37 are formed in parallel with the first and second protrusion side contact surfaces 34a and 36a so as to be able to contact the first and second protrusion side contact surfaces 34a and 36a. The first and second recess-side contact surfaces 35a, 37a Since the first and second holder plates 5 and 6 are formed on both sides in the direction, the first and second protrusion side contact surfaces 34a and 36a and the first and second recess side contact The contact area of the surfaces 35a and 37a can be set relatively large, and the contact surface pressure can be reduced.

  Further, the first rotation on the first holder plate 5 and the first slide member 24 side which is one set of the first and second holder plates 5 and 6 and the first and second slide members 24 and 25. The width W1 along the circumferential direction of the locking projection 34 and the width W2 along the circumferential direction of the second holder plate 6 and the second rotation projection 36 on the second slide member 25 side which is the other set. Since they are set differently from each other, it is possible to prevent erroneous assembly.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. Is possible.

  For example, in the above-described embodiment, the resilient means 40 is configured by the set plate 41 and the disc spring 42, but it is also possible to configure the resilient means only by a spring member such as a wave washer.

4 ... Torque fluctuation absorbing devices 5, 6 ... Holder plate 7 ... Driven plate 13 ... Drive plates 24, 25 ... Slide members 24a, 25a ... Ring plate portions 26, 27 ... High friction members 28, 29 ... Low friction members 30, 31 ... Engagement protrusions 32, 33 ... Locking recesses 34, 36 ... Anti-rotation protrusions 34a, 36a ... Projections Side contact surfaces 35, 37... Detent recesses 35 a, 37 a... Recess side contact surface 40.・ ・ ・ Contact part W1 ・ ・ ・ Width W2 along the circumferential direction of one set of anti-rotation projections ・ ・ ・ Width along the circumferential direction of the other set of anti-rotation projections

Claims (7)

A pair of holder plates (5, 6) coupled to each other, and power transmission between the holder plates (5, 6) are made coaxially arranged between the pair of holder plates (5, 6). And a pair of the holder plates (5, 6) and the driven plate (7) capable of relative rotation so as to generate two-stage hysteresis. In
Ring plate portions (24a, 25a) constituting at least a part of a resin-made slide member (24, 25) that is allowed to rotate relative to the holder plate (5, 6) at a predetermined angle; A high friction member (26, 27) which is joined to the ring plate portion (24a, 25a) and makes contact with the driven plate (7) while preventing relative rotation with the slide member (24, 25); The resin-made low friction members (28, 29) sandwiching the ring plate portions (24a, 25a) between the high friction members (26, 27) while allowing relative rotation with respect to (24, 25). , Arranged between the pair of holder plates (5, 6) and the driven plate (7),
One holder plate (5) of the pair of holder plates (5, 6) and one of the low friction members arranged on the one holder plate (5) side of the low friction members (28, 29). An elastic means (40) having a contact surface (43) which contacts the one low friction member (28) and rotates with the one holder plate (5) is interposed between the member (28) and the member (28). ,
The elastic means (40) is subjected to the same surface treatment as that of the one holder plate (5) and is connected to the one holder plate (5) so as not to be relatively rotatable and axially movable. A plate set (41) made of metal having a surface (43) and a disc spring (42) interposed between the one holder plate (5) and the set plate (41), and the plate A contact portion (45) of the spring (42) with the set plate (41) is formed in a curved shape that swells toward the set plate (41), and the other low friction member (29) is attached to the other holder. Exerting a resilience to separate the ring plate portions (24a) of the one holder plate (5) and the one slide member (24) from each other so as to contact the plate (6). Torque fluctuation absorbing apparatus according to symptoms. A pair of holder plates (5, 6) coupled to each other, and power transmission between the holder plates (5, 6) are made coaxially arranged between the pair of holder plates (5, 6). And a pair of the holder plates (5, 6) and the driven plate (7) capable of relative rotation so as to generate two-stage hysteresis. In
Ring plate portions (24a, 25a) constituting at least a part of a resin-made slide member (24, 25) that is allowed to rotate relative to the holder plate (5, 6) at a predetermined angle; A high friction member (26, 27) which is joined to the ring plate portion (24a, 25a) and makes contact with the driven plate (7) while preventing relative rotation with the slide member (24, 25); The resin-made low friction members (28, 29) sandwiching the ring plate portions (24a, 25a) between the high friction members (26, 27) while allowing relative rotation with respect to (24, 25). , Arranged between the pair of holder plates (5, 6) and the driven plate (7),
One holder plate (5) of the pair of holder plates (5, 6) and one of the low friction members arranged on the one holder plate (5) side of the low friction members (28, 29). An elastic means (40) having a contact surface (43) which contacts the one low friction member (28) and rotates with the one holder plate (5) is interposed between the member (28) and the member (28). ,
The elastic means (40) is arranged such that the other low friction member (29) is brought into contact with the other holder plate (6) so that the one holder plate (5) and the one slide member (24) are in contact with each other. The ring plate portion (24a) is exerted elastic force to separate from each other,
One of the slide member (24, 25) and the holder plate (5, 6) is provided with a protrusion-side contact surface (34a, 36a) inclined at a predetermined angle therebetween on the circumferential side. Stop protrusions (34, 36) are provided so as to allow relative rotation of the slide members (24, 25) and the holder plates (5, 6) at a predetermined angle, thereby preventing the rotation protrusions (34, 36). The recesses (35, 37) for accommodating the protrusions extend in parallel with the protrusion side contact surfaces (34a, 36a) so as to be able to contact the protrusion side contact surfaces (34a, 36a). Formed on the other of the slide member (24, 25) and the holder plate (5, 6) so as to have side contact surfaces (35a, 37a) on both sides in the circumferential direction;
Of the pair of holder plates (5, 6) and the pair of slide members (24, 25), the width (W1) along the circumferential direction of one set of the anti-rotation projections (34) and the other set the detent projection (36) in the circumferential direction along the width (W2) and the characteristics and to belt torque fluctuation absorber to be set different from each other. The elastic means (40) is subjected to the same surface treatment as that of the one holder plate (5), and is connected to the one holder plate (5) so as not to be relatively rotatable and axially movable. A disc set spring (42) interposed between the one holder plate (5) and the set plate (41). The torque fluctuation absorbing device according to claim 2 , wherein a contact portion (45) of the (42) with the set plate (41) is formed in a curved shape swelled toward the set plate (41). The position of the contact portion (45) of the disc spring (42) corresponding to the center of the high friction member (26, 27) and the low friction member (28, 29) in the radial direction of the driven plate (7). The torque fluctuation absorber according to claim 1 or 3 , wherein A locking recess for engaging an engagement protrusion (30, 31) formed on one of the ring plate (24a, 25a) and the high friction member (26, 27) of the slide member (24, 25). (32, 33) is formed on the other of the slide member (24, 25) and the high friction member (26, 27), while the slide member (24, 25) and the high friction member (26, 27) are formed. The torque fluctuation absorber according to any one of claims 1 to 4, wherein the other is molded with the other. The low-friction member (28, 29) has a contact area smaller than that of the high-friction member (26, 27) so that the ring plate portions (24a, 25a) are in contact with the ring plate portion (24a, 25a). The torque fluctuation absorber according to any one of claims 1 to 5, wherein the torque fluctuation absorber is formed. The said elastic means (40) is arrange | positioned on the opposite side with respect to the said drive plate (7) with respect to the drive plate (13) connected with a pair of said holder plates (5, 6). The torque fluctuation absorber according to any one of 1 to 6 .

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