JP6001462B2 - Damper device - Google Patents

Description

  The present invention relates to a damper device including a dynamic vibration absorber.

  As a damper device, for example, as described in Patent Document 1, a device including a plurality of damper portions disposed from upstream to downstream of a torque transmission path and a dynamic vibration absorber is known. Of the damper portions adjacent to each other in the torque transmission path, the upstream damper portion is referred to as a “first damper portion” and the downstream damper portion is referred to as a “second damper portion”. Each of these damper portions has an input member, an elastic member, and an output member arranged along the torque transmission path.

  In such a damper device, the output member of the first damper portion and the input member of the second damper portion are coupled together by a rivet so as to be integrally rotatable. A dynamic vibration absorber is attached to the input member of the second damper portion.

Special table 2011-526344 gazette

  In the damper device described above, the inner peripheral edge of the output member of the first damper portion is brought into sliding contact with the hub member through which the input shaft of the transmission is inserted, so that the center of the output member is aligned with the rotational axis of the damper device. Centering is in progress. And the input member of the 2nd damper part is connected with the output member of the 1st damper part by which centering is performed in this way by the rivet.

  Here, as shown in FIG. 6A, the connection between the two members by the rivet is performed between the center of the through hole 811 formed in the first member 81 and the through hole 821 formed in the second member 82. It is preferable to insert the rivet 83 in a state where the center coincides. However, at the time of actual manufacturing, it is difficult to make the centers of the through holes 811 and 821 coincide with each other, and as shown in FIG. In many cases, 81 and 82 are connected by a rivet 83.

  Therefore, in the above damper device, when the input member of the second damper portion is connected to the output member of the first damper portion by the rivet, the center of the input member of the second damper portion is the center of the damper device. Easy to deviate from the rotation axis. When the center of the input member of the second damper portion is deviated from the rotation axis, the center of the dynamic vibration absorber attached to the input member of the second damper portion is also deviated from the rotation axis of the damper device.

  The damper device includes a main body disk and a plurality of mass bodies arranged along the circumferential direction, and these mass bodies are arranged so that their radial positions on the basis of the center of the main body disk coincide with each other. Yes. However, if the main body disk is attached to the input member of the second damper portion whose center is deviated from the rotational axis of the damper device, the radial position of each mass body with respect to the rotational axis varies. As a result, the vibration damping effect by the dynamic vibration absorber may be reduced.

  The objective of this invention is providing the damper apparatus which can suppress the fall of the vibration damping effect by a dynamic vibration absorber.

  A damper device for solving the above problems includes an input member, a first elastic member, an intermediate member, a second elastic member, a damper portion arranged along a torque transmission path, and a main body disk. And a dynamic vibration absorber having a mass body that is displaceable with respect to the main body disk, and a damper device that rotates about a predetermined rotation axis is assumed. And the centering part which aligns the center of an intermediate member with a rotating shaft line was provided, and the main body disk of the dynamic vibration damper was attached to this intermediate member.

  According to the above configuration, the centering portion causes the center of the intermediate member to be aligned with the rotation axis of the damper device, so that the intermediate member rotates about the rotation axis. And the main body disk of a dynamic vibration absorber is attached to such an intermediate member. Therefore, the radial position around the rotation axis of the mass body is less likely to deviate from an appropriate position. As a result, it is possible to suppress a decrease in the vibration damping effect due to the dynamic vibration absorber.

  Incidentally, a hub member that rotates about the rotation axis is provided on the radially inner side of the damper device, and an output member of the damper portion may be coupled to the hub member so as to be integrally rotatable. In this case, the centering portion is provided on the projecting portion that protrudes in the axial direction from one member of the intermediate member and the output member of the damper portion and the other member of the intermediate member and the output member, and the projecting portion is engaged with the projecting portion. And an engaging portion. Thereby, the center of the intermediate member can be aligned with the rotational axis of the damper device. As a result, it is easy to optimize the radial position of the mass body, and it is possible to suppress a decrease in the vibration damping effect caused by the dynamic vibration absorber.

  Further, an accommodation chamber for accommodating a part of the protruding portion is formed in the other member of the damper member and the output member, and a radially outer surface of the accommodation chamber is made to function as an engaged portion. Also good. In this case, it is preferable to make the width dimension in the circumferential direction of the storage chamber larger than the width dimension in the circumferential direction of the protrusion. According to this configuration, the intermediate member can rotate relative to the output member as long as the protruding portion does not contact the side surfaces located on both sides in the circumferential direction of the storage chamber. On the other hand, if the protrusion comes into contact with the side surface while the intermediate member is rotating relative to the output member, further relative rotation of the intermediate member is restricted. That is, the centering portion also functions as a restricting portion that restricts rotational torsion of the intermediate member of the damper portion and the output member by a predetermined angle or more. Therefore, compared with the case where a centering part and a control part are provided separately, the configuration of the damper device can be simplified.

  The one member may be disposed so as to overlap the hub member in the axial direction, and a gap may be interposed between the inner peripheral edge and the hub member. Thus, by effectively utilizing such a gap, it is possible to contribute to shortening of the axial direction of the torque transmission mechanism including the above-described damper device.

  In the above-described damper device, it is preferable to further provide another centering portion that aligns the center of the main body disk of the dynamic vibration absorber at the center of the intermediate member of the damper portion. Thereby, since the center of the intermediate member to which the dynamic vibration absorber is attached is centered on the rotation axis of the damper device by the centering portion, the center of the dynamic vibration absorber is centered by the centering portion and other centering portions. It will be adjusted to the rotational axis of the damper device. For this reason, a deviation from an appropriate position in the radial direction of the mass body constituting the dynamic vibration absorber is less likely to occur. As a result, it is possible to suppress a decrease in the vibration damping effect due to the dynamic vibration absorber.

  The other centering portion is provided on one of the intermediate member of the damper portion and the main body disk of the dynamic vibration absorber, and is formed on the other of the projecting portion protruding in the axial direction and the intermediate member and the main body disk. And the structure which has an engaging recessed part in which the front-end | tip of the protrusion is accommodated may be sufficient.

  The intermediate member may include a front intermediate member and a rear intermediate member that are arranged at different positions in the axial direction. The center of the front intermediate member is aligned with the rotation axis by the centering portion, and the main body disk of the dynamic vibration absorber may be attached. The rear intermediate member may be connected to the front intermediate member via a connector so as to be integrally rotatable. In the damper portion, a restricting portion that restricts rotational torsion between the input member and the rear intermediate member is provided, and the restricting portion is controlled from the restriction accommodating chamber formed in the input member and the rear intermediate member. It is good also as a structure which has the protrusion for control extended toward the storage chamber. In this case, it is preferable that the width dimension in the circumferential direction of the regulating storage chamber is larger than the width dimension in the circumferential direction of the regulating projection. By adopting this configuration, it is possible to restrict a certain amount or more of rotational torsion between the input member and the intermediate member of the damper portion by the restricting portion without expanding the damper device in the radial direction.

The single view which shows one Embodiment of a damper apparatus. The top view which shows a part of damper apparatus. The single view which shows the damper apparatus of a comparative example. The single view which shows a part of damper apparatus of another embodiment. The single view which shows a part of damper apparatus of other another embodiment. (A) is sectional drawing which shows typically a mode that each member is connected with a rivet in an ideal state, (b) is a model which shows a mode that each member is connected with a rivet in the state which the center of each through-hole shifted | deviated. FIG.

  An embodiment of a damper device including a dynamic vibration absorber will be described with reference to FIGS. In the following description of the present specification, when simply referred to as “radial direction” and “circumferential direction”, the “radial direction” and the “circular direction” centered on the rotation axis S of the damper device indicated by the one-dot chain line in FIG. “Circumferential direction”. Further, the direction in which the rotation axis S extends (left and right direction in FIG. 1) is referred to as “axial direction”, the left side in FIG. 1 is referred to as “front side”, and the right side in FIG.

  A damper device 11 shown in FIG. 1 is provided in a torque transmission mechanism (for example, a torque converter with a lock-up clutch) that outputs torque input from a power source such as an engine to a transmission (not shown). Torque output from a power source such as an engine is transmitted to the damper device 11 through a piston 13 having a friction element 12.

  The damper device 11 includes a first damper portion 20 to which torque is transmitted from the piston 13, a second damper portion 30 to which torque is transmitted from the first damper portion 20, and the second damper portion. The dynamic vibration absorber 40 attached to 30 is provided. The dynamic vibration absorber 40 has a function of attenuating vibration associated with input torque fluctuation.

  A cylindrical hub member 14 through which an input shaft (not shown) of the transmission extending in the axial direction is inserted is provided on the radially inner side of the damper device 11. The hub member 14 is an input of the transmission. Rotates integrally with the shaft. A cylindrical portion 131 protruding rearward is provided on the inner peripheral edge of the piston 13. The hub member 14 supports the piston 13 through the tubular portion 131 in a state in which the piston 13 is relatively movable in the axial direction.

The first damper unit 20 will be described.
The first damper portion 20 includes an upstream damper disk 21 as an example of an input member, and an upstream damper spring 22 as an example of a first elastic member to which torque is transmitted from the upstream damper disk 21. ing. The upstream damper disk 21 has a disk body 211 having a substantially annular shape in plan view, and a torque input portion 212 projects forward from the outer peripheral edge of the disk body 211. The torque input portion 212 is drivingly connected to the piston 13, and when the torque is input from the piston 13 to the torque input portion 212, the upstream damper disk 21 rotates about the rotation axis S.

  The disk main body 211 is formed with a plurality of spring accommodating chambers 213 arranged at equal intervals along the circumferential direction. In such a spring accommodating chamber 213, the upstream damper spring 22 is accommodated in such a manner that it can expand and contract in the circumferential direction. A portion located between the spring accommodating chambers 213 adjacent to each other in the circumferential direction functions as a first transmission portion 214 that transmits torque to the upstream damper spring 22.

  An annular second intermediate plate 23 disposed coaxially with the upstream damper disk 21 is provided on the front side of the disk main body 211, and is disposed coaxially with the upstream damper disk 21 on the rear side of the disk main body 211. An annular first intermediate plate 24 is provided. These first and second intermediate plates 24 and 23 are rotatable relative to the upstream damper disk 21. The second intermediate plate 23 is connected to the first intermediate plate 24 by a rivet 25 on the radially inner side of the upstream damper spring 22, and rotates integrally with the first intermediate plate 24.

  In each of the first and second intermediate plates 24 and 23, a window portion 26 is formed at the same position of the upstream damper spring 22 in the circumferential direction and the radial direction. In the first damper portion 20 of the present embodiment, a plurality of upstream damper springs 22 are arranged along the circumferential direction. Therefore, the same number of windows 26 as the upstream damper springs 22 are arranged in the first and second intermediate plates 24 and 23 along the circumferential direction.

  And the part located between each window part 26 mutually adjacent in the circumferential direction functions as the 2nd transmission part 27 to which a torque is transmitted from the upstream damper disk 21 via the upstream damper spring 22. FIG. In the present embodiment, the second transmission unit 27 is disposed on both sides of the first transmission unit 214 in the axial direction. Accordingly, the first transmission portion 214 is engaged with the center of the upstream damper spring 22 in the axial direction, and the second transmission portion 27 is engaged with the edge portion of the upstream damper spring 22 in the axial direction.

  A plurality of regulating accommodation chambers 215 are formed along the circumferential direction on the outer peripheral side of the disk body 211 of the upstream damper disk 21 (that is, radially outward from the upstream damper spring 22). Each of the regulation accommodating chambers 215 is arranged at equal intervals along the circumferential direction. Further, from the outer peripheral edge of the first intermediate plate 24, the same number of restricting protrusions 243 as the restricting accommodating chambers 215 protrude forward. These restricting protrusions 243 are arranged at equal intervals along the circumferential direction, and their tips are accommodated in the corresponding restricting accommodation chambers 215.

  The width dimension in the circumferential direction of the restricting projection 243 is smaller than the width dimension in the circumferential direction of the restricting storage chamber 215. Therefore, when the restricting protrusion 243 is not in contact with any one of the side surfaces located on both sides in the circumferential direction of the restricting storage chamber 215, the relative rotation of the first intermediate plate 24 with respect to the upstream damper disk 21 is used. That is, rotational twist is allowed. On the other hand, when the restricting protrusion 243 comes into contact with any one of the side surfaces located on both sides in the circumferential direction of the restricting storage chamber 215, it exceeds that of the first intermediate plate 24 with the upstream damper disk 21 as a reference. Relative rotation is restricted. Therefore, in the present embodiment, the regulation first chamber is configured to regulate a certain amount or more of rotational torsion between the upstream damper disk 21 and the first intermediate plate 24 by the regulation storage chamber 215 and the regulation projection 243. A1 "is configured.

  In the present embodiment, the inner peripheral edge 241 of the first intermediate plate 24 is located on the radially inner side with respect to the inner peripheral edge 231 of the second intermediate plate 23. The first intermediate plate 24 transmits the torque transmitted via the upstream damper spring 22 to the second damper portion 30. The first intermediate plate 24 of the present embodiment is such that the inner peripheral side portion 242 positioned radially inward of the upstream damper spring 22 is positioned in front of the disk body 211 of the upstream damper disk 21. Has been processed.

Next, the second damper unit 30 will be described.
The second damper portion 30 includes a third intermediate plate 31 disposed on the front side of the inner peripheral portion 242 of the first intermediate plate 24 and a second intermediate portion disposed radially inward of the upstream damper spring 22. And a downstream damper spring 32 as an example of the elastic member. The third intermediate plate 31 is coaxially disposed on the upstream damper disk 21 and the first intermediate plate 24 and rotates integrally with the first intermediate plate 24. Specifically, a portion of the third intermediate plate 31 that is located radially outward from the downstream damper spring 32 is connected to the first intermediate plate 24 by a rivet 33 as an example of a connecting tool.

  Therefore, in the present embodiment, the “intermediate member of the damper portion” is configured by the first intermediate plate 24, the second intermediate plate 23, and the third intermediate plate 31. Of the first and third intermediate plates 24 and 31, the third intermediate plate 31 located on the front side corresponds to the “front intermediate member”, and the first intermediate plate 24 located on the rear side is the “rear side”. It corresponds to a “side intermediate member”.

  In each of the first and third intermediate plates 24 and 31, a window portion 34 is formed at the same position of the downstream damper spring 32 in the circumferential direction and the radial direction. The second damper portion 30 of the present embodiment has a configuration in which a plurality of downstream damper springs 32 are arranged along the circumferential direction. Therefore, the first and third intermediate plates 24 and 31 are provided with the same number of windows 34 as the downstream damper springs 32 along the circumferential direction. And the part located between each window part 34 mutually adjacent in the circumferential direction functions as the 3rd transmission part 35 which transmits the torque output from the 1st damper part 20 to the downstream damper spring 32. FIG.

  In addition, a radially outer side of the third intermediate plate 31 than the third transmission portion 35 is a connecting portion 311. The connecting portion 311 has a substantially annular shape in plan view, and is located on the front side of the first damper portion 20. The radial position of the outer peripheral edge of the connecting portion 311 is substantially the same position as the radial position of the upstream damper spring 22. The dynamic vibration absorber 40 is connected to the connecting portion 311.

  The second damper portion 30 of this embodiment includes an annular downstream damper disk 36 disposed between the first and third intermediate plates 24 and 31 in the axial direction. The downstream damper disk 36 is coupled to the hub member 14 at the inner periphery thereof so as to be integrally rotatable. Thus, the downstream damper disk 36 is centered so that the center thereof is aligned with the rotational axis S of the damper device 11. The downstream damper disk 36 can rotate relative to the second and third intermediate plates 23 and 31.

  A plurality of spring accommodating chambers 361 for accommodating the downstream damper springs 32 are formed in the downstream damper disk 36 along the circumferential direction. In the spring accommodating chamber 361, the downstream damper spring 32 is arranged in a manner that can be expanded and contracted in the circumferential direction. A portion located between the spring accommodating chambers 361 adjacent to each other in the circumferential direction functions as a fourth transmission portion 362 to which torque is transmitted via the downstream damper spring 32. The torque transmitted through the fourth transmission unit 362 as described above is output from the second damper unit 30, that is, the damper device 11. Therefore, in the present embodiment, the downstream damper disk 36 functions as “an output member of the damper portion”.

  In the present embodiment, the third transmission unit 35 is disposed on both sides of the fourth transmission unit 362 in the axial direction. Therefore, the third transmission portion 35 is engaged with the edge portion in the axial direction of the downstream damper spring 32, and the fourth transmission portion 362 is engaged with the center in the axial direction of the downstream damper spring 32. Yes.

  As shown in FIGS. 1 and 2, a projecting claw 363 as an example of a projecting portion projecting forward is provided on the downstream damper disk 36 on the radially inner side of the downstream damper spring 32. The protruding claws 363 are formed by cutting and bending a part of the plate material constituting the downstream damper disk 36. In the present embodiment, a plurality of protruding claws 363 are formed on the downstream damper disk 36, and these protruding claws 363 are arranged at equal intervals along the circumferential direction.

  Further, an annular gap 52 is interposed between the inner peripheral edge 312 of the third intermediate plate 31 and the outer peripheral surface 141 of the hub member 14, and the cylindrical portion 131 of the piston 13 is located in the gap 52. positioned. On the inner peripheral edge 312 of the third intermediate plate 31, the same number of claw recesses (accommodating chambers) 313 as the protruding claws 363 are formed. These claw recesses 313 are arranged at equal intervals along the circumferential direction, and the width dimension in the circumferential direction is larger than the width dimension in the circumferential direction of the protruding claw 363. A protruding claw 363 is inserted into the claw recess 313.

  As shown in FIG. 2, the radially outer surface 364 of each protruding claw 363 is in sliding contact with the bottom surface 314 that is the radially outer surface of each claw recess 313. As a result, centering is performed so that the center of the third intermediate plate 31 is aligned with the center of the downstream damper disk 36, that is, the rotational axis S of the damper device 11. That is, the bottom surface 314 functions as an “engaged portion” with which the protruding claw 363 is engaged. Therefore, in the present embodiment, the projecting claw 363 and the claw recess 313 constitute a “first centering portion A2” that functions as a centering portion that aligns the center of the third intermediate plate 31 with the rotation axis S.

  Further, when the protruding claw 363 is not in contact with either one of the both side surfaces 315 located on both sides in the circumferential direction of the claw recess 313, the relative rotation of the downstream damper disk 36 with respect to the third intermediate plate 31 is caused. Permissible. When the projecting claw 363 contacts the side surface 315 while the third intermediate plate 31 is relatively rotating, further relative rotation of the third intermediate plate 31 is restricted. That is, in the present embodiment, the first centering portion A2 having the protruding claws 363 and the claw recesses 313 is equal to or greater than a predetermined angle between the first to third intermediate plates 24, 23, 31 and the downstream damper disk 36. It also functions as a second restricting portion that restricts the rotational torsion.

Next, a configuration of the dynamic vibration absorber 40 and a structure for attaching the dynamic vibration absorber 40 to the third intermediate plate 31 will be described.
The dynamic vibration absorber 40 is located on the radially outer side than the downstream damper spring 32. Such a dynamic vibration absorber 40 includes a main body disk 41 having a substantially annular shape in plan view, and the main body disk 41 is attached to the third intermediate plate 31 via a rivet 51. That is, the main body disk 41 is disposed coaxially with the third intermediate plate 31 and rotates integrally with the third intermediate plate 31. The main body disk 41 has a thicker plate material (i.e., shaft) than the plate material constituting the upstream damper disk 21, the first to third intermediate plates 24, 23, 31 and the downstream damper disk 36. Plate having a wide width in the direction).

  The inner peripheral edge 411 of the main body disk 41 of the present embodiment is located on the radially outer side than the rivet 33 that connects the third intermediate plate 31 to the first intermediate plate 24. A part of the second damper portion 30 that is radially inward of the connecting portion 311 is located on the radially inner side of the main body disk 41. That is, a part of the second damper portion overlaps with the main body disk 41 in the axial direction.

  The main body disk 41 is formed with a plurality of rolling chambers 43 arranged at substantially equal intervals along the circumferential direction. Each of the rolling chambers 43 is open on the inner peripheral edge 411 side of the main body disk 41. Further, the radially outer edge (hereinafter also referred to as “outer edge”) 431 of the rolling chamber 43 has an arc shape in which the center in the circumferential direction is the outermost part in the radial direction. For example, the arc shape of the outer edge portion 431 includes an arc whose center is located on the radially outer side with respect to the rotation axis S as an example.

  On the outer peripheral edge of the main body disk 41, a plurality of engaging recesses 412 are formed at equal intervals along the circumferential direction. The same number of protrusions 316 as the engagement recesses 412 protrude from the outer peripheral edge of the third intermediate plate 31 to the front side, and the tips of these protrusions 316 are inserted into the engagement recesses 412. At this time, the radially inner side surface 316 a of the protrusion 316 is locked to the bottom surface 412 a of the corresponding engagement recess 412. As a result, centering for aligning the center of the main body disk 41 with the center of the third intermediate plate 31 is performed. Therefore, in the present embodiment, the “second centering portion A3” that functions as another centering portion that aligns the center of the main body disk 41 with the center of the third intermediate plate 31 by the engaging recess 412 and the protrusion 316. Composed. By providing the second centering portion A3, the center of the dynamic vibration absorber 40 is aligned with the rotational axis S of the damper device 11.

  In the present embodiment, when the tip of the protrusion 316 is inserted into the engagement recess 412, the center of the insertion hole through which the rivet 51 is inserted in the main body disk 41 is inserted into the rivet 51 in the third intermediate plate 31. It almost coincides with the center of the insertion hole. That is, the second centering portion A3 also functions as an alignment portion that aligns the main body disk 41 with respect to the third intermediate plate 31.

  The dynamic vibration absorber 40 includes a plurality of rollers 46 as an example of a mass body that rolls (displaces) in the rolling chamber 43. The roller 46 has a substantially circular shape in plan view, and is thicker than the main body disk. An annular groove 462 is provided on the peripheral surface 461 of the roller 46 over the entire circumference. The width dimension of the groove 462 (that is, the length dimension in the axial direction) is slightly larger than the thickness dimension of the main body disk 41 (that is, the length dimension in the axial direction).

  A guide member 47 for supporting each roller 46 is provided on the front side of the main body disk 41. Each roller 46 is supported by the guide member 47 and the third intermediate plate 31 by a shaft portion 463 projecting in the axial direction from both side surfaces thereof.

Next, the damper device 11 of the present embodiment is compared with the damper device 11A of the comparative example shown in FIG.
First, a damper device 11A of a comparative example will be described with reference to FIG.

  As shown in FIG. 3, an annular flange 142 </ b> A is provided at an intermediate position in the axial direction of the hub member 14 </ b> A of the damper device 11 </ b> A of the comparative example. The inner peripheral edge 312A of the third intermediate plate 31A is in sliding contact with the outer peripheral surface 143A of the flange 142A. That is, in the comparative example, the first centering portion B21 that aligns the center of the third intermediate plate 31A with the rotation axis S is configured by the collar portion 142A and the inner peripheral edge 312A of the third intermediate plate 31A.

  Also in the damper device 11A of the comparative example, the downstream damper disk 36A is provided with a protruding claw 363A protruding forward, and the third intermediate plate 31A has a claw recess 313A. In other words, in the comparative example, the projecting claw 363A and the claw recess 313A constitute a second regulating portion B22 that regulates rotational torsion of the third intermediate plate 31A and the downstream damper disk 36A by a predetermined angle or more. However, in the comparative example, the radially outer surface of the protruding claw 363A is not in contact with the bottom surface of the claw recess 313A, and the second restricting portion B22 does not function as a centering portion. That is, the second restricting portion B22 is provided separately from the first centering portion B21.

  The damper device 11A of the comparative example is also provided with a first restricting portion B1 that restricts a certain amount or more of rotational torsion between the upstream damper disk 21A and the first intermediate plate 24A. That is, the first restricting portion B1 includes a first projecting portion 61 projecting radially outward from the outer peripheral edge of the disc body 211A of the upstream damper disc 21A, and a second intermediate plate 24A provided on the first intermediate plate 24A. And a protrusion 62. When the second protrusion 62 is not in contact with the first protrusion 61, relative rotation of the first intermediate plate 24A with respect to the upstream damper disk 21A is allowed. On the other hand, when the second protrusion 62 is in contact with the first protrusion 61, further relative rotation of the first intermediate plate 24A is restricted.

  Further, in the structure in which the main body disk 41A of the dynamic vibration absorber 40A is attached to the third intermediate plate 31A, unlike the case of the present embodiment, the protrusion 316 and the engagement recess 412 are not provided, that is, the second A configuration corresponding to the centering portion A3 is not provided.

  On the other hand, in the damper device 11 of the present embodiment, a gap 52 is formed between the inner peripheral edge 312 of the third intermediate plate 31 and the outer peripheral surface 141 of the hub member 14. The cylindrical portion 131 of the piston 13 is located in the gap 52. That is, the piston 13 is disposed closer to the damper device 11 in the axial direction than the damper device 11 of the comparative example because the hub member 14 does not need to be provided with the flange 142A. As a result, it is possible to shorten the torque transmission mechanism including the damper device in the axial direction.

  In the comparative example, the first centering part B21 and the second restricting part B22 are separately provided, whereas in the present embodiment, the first centering part A2 also serves as the second restricting part. ing. Thereby, simplification of the structure of the damper apparatus 11 is achieved.

  In the comparative example, the first protruding portion 61 and the second protruding portion 62 include the first restricting portion B1 that restricts a certain amount or more of rotational torsion between the upstream damper disk 21A and the first intermediate plate 24A. In contrast to this, in the present embodiment, the first restricting portion A1 is configured without providing the projecting portions 61 and 62. Therefore, the enlargement of the damper device 11 in the radial direction is suppressed.

  Further, in the comparative example, since the second centering portion A3 is not provided, the center of the main body disk 41 of the dynamic vibration absorber 40 is easily displaced from the center of the third intermediate plate 31. That is, the center of the dynamic vibration absorber 40 is likely to deviate from the rotation axis S of the damper device 11. Further, when the dynamic vibration absorber 40A is attached to the third intermediate plate 31A, since the second centering portion A3 is not provided, it takes time to assemble. In this respect, in the present embodiment, since the second centering portion A3 is configured by the protrusion 316 and the engaging recess 412, the center of the dynamic vibration absorber 40 and the rotation axis S are less likely to occur, and the first Assembling of the main body disk 41 of the dynamic vibration absorber 40 to the third intermediate plate 31 is facilitated.

Next, the operation of the damper device 11 of this embodiment will be described.
In the damper device 11 of the present embodiment, centering is performed to align the center of the third intermediate plate 31 with the rotation axis S, and the main body disk 41 of the dynamic vibration absorber 40 is attached to the third intermediate plate 31. ing. In addition, centering for aligning the center of the dynamic vibration absorber 40 with the rotation axis S is also performed. Therefore, the shift between the center of the main body disk 41 of the dynamic vibration absorber 40 and the rotation axis S can be suppressed as compared with the conventional case where the centering of the member to which the dynamic vibration absorber is attached is not performed. As a result, the radial position around the rotation axis S of each roller 46 can be set to an appropriate position. That is, the variation in the radial position of each roller 46 is suppressed as much as possible. Thereby, the fall of the damping efficiency of the vibration by the dynamic vibration absorber 40 is suppressed. Further, wear is less likely to occur between the input shaft of the transmission that supports the damper device 11 via the hub member 14 and the bearing member that supports the input shaft.

As described above, in the present embodiment, the following effects can be obtained.
(1) The main body disk 41 of the dynamic vibration absorber 40 is attached to the third intermediate plate 31 in which centering is performed to align the center with the rotation axis S. Thereby, the radial position of the rollers 46 can be optimized and variations in the radial positions of the rollers 46 can be suppressed as much as possible. As a result, it is possible to suppress a decrease in the vibration damping effect caused by the dynamic vibration absorber 40. Further, the durability of the torque transmission mechanism provided with the damper device is improved because the wear is less likely to occur between the input shaft of the transmission supported via the hub member 14 and the bearing member supporting the input shaft. Will be able to.

  (2) In the present embodiment, the projecting claw 363 provided on the downstream damper disk 36 is engaged with the claw recess 313 formed in the third intermediate plate 31, thereby The center is aligned with the rotation axis S. A gap 52 is formed between the inner peripheral edge 312 of the third intermediate plate 31 and the outer peripheral surface 141 of the hub member 14, and the cylindrical portion 131 of the piston 13 is located in the gap 52. . As a result, compared to the comparative example in which the flange member 142A is provided on the hub member 14A, the torque transmission mechanism provided with the damper device 11 can be shortened in the axial direction by the amount that the piston 13 can be brought closer to the damper device 11 in the axial direction. Will be able to contribute.

  (3) Further, since the width dimension in the circumferential direction of the claw recess 313 is larger than the width dimension in the circumferential direction of the protruding claw 363, the first centering portion A2 is provided with the first to third intermediate plates 24, 23. , 31 and the downstream damper disk 36 also serve as a second restricting portion that restricts rotational torsion of a predetermined angle or more. Therefore, compared with the case where 1st centering part B21 and 2nd control part B22 are provided separately like a comparative example etc., the structure of the damper apparatus 11 can be simplified now.

  (4) In the present embodiment, the centering of the dynamic vibration absorber 40 with the center of the third intermediate plate 31 is performed by the second centering portion A3. For this reason, the displacement between the center of the dynamic vibration absorber 40 and the rotation axis S is less likely to occur. Thereby, the deviation from the appropriate position of the roller 46 in the radial direction is further suppressed, and the variation in the radial position of each roller 46 is suppressed as much as possible. As a result, it is possible to suppress a decrease in the vibration damping effect caused by the dynamic vibration absorber 40.

  (5) Further, after aligning the protrusion 316 provided on the third intermediate plate 31 with the engagement recess 412 formed on the main body disk 41, the main body is attached to the third intermediate plate 31. A disk 41 can be attached. As a result, the dynamic vibration absorber 40 can be easily assembled to the third intermediate plate 31 as compared with the case where the second centering portion A3 that also functions as an alignment portion is not provided as in the comparative example. Become.

  (6) Furthermore, the upstream damper disk 21 and the first intermediate plate 24 are formed by forming the restriction accommodating chamber 215 in the upstream damper disk 21 and providing the restriction protrusion 243 in the first intermediate plate 24. 1st regulation part A1 which regulates more than a fixed amount of rotational twist was comprised. As a result, the first damper 61 is provided on the upstream damper disk 21A and the second protrusion 62 is provided on the first intermediate plate 24A, thereby comparing with the comparative example in which the first restricting part B1 is configured. And it becomes possible to suppress the increase in size of the damper device 11 in the radial direction.

The above embodiment may be changed to another embodiment as described below.
-You may comprise 1st control part A1 like a comparative example. That is, as shown in FIG. 4, the disk body 211 of the upstream damper disk 21 is provided with a first protrusion 61 that protrudes radially outward from the outer peripheral edge thereof, and the first intermediate plate 24A has a first protrusion 61. A second protrusion 62 that engages with the protrusion 61 may be provided, and the first and second protrusions 61 and 62 may constitute the first restricting portion A1.

  As shown in FIG. 4, the second centering portion is an engagement formed on the outer peripheral edge of the third intermediate plate 31 and the protrusion 415 that protrudes rearward from the main body disk 41 of the dynamic vibration absorber 40. A second centering portion A31 having a recess 317 may be used. Even with this configuration, centering can be performed in which the center of the main body disk 41 is aligned with the center of the third intermediate plate 31. Therefore, optimization of the radial position of the rollers 46 is achieved, and variations in the radial positions of the rollers 46 are suppressed as much as possible. As a result, it is possible to suppress a decrease in the vibration damping effect caused by the dynamic vibration absorber 40. Further, the main body disk 41 can be attached to the third intermediate plate 31 after the third intermediate plate 31 and the main body disk 41 are aligned. Therefore, the dynamic vibration absorber 40 can be easily assembled to the third intermediate plate 31.

-The second centering portion A3 may be omitted.
The gap 52 may not be formed between the inner peripheral edge 312 of the third intermediate plate 31 and the hub member 14. For example, as shown in FIG. 5, a flange 142 may be provided on the hub member 14.

  As shown in FIG. 5, a projection claw 318 that projects rearward from the inner peripheral edge 312 of the third intermediate plate 31 is provided, and a claw recess 365 that accommodates the projection claw 318 is formed in the downstream damper disk 36. May be. In this case, the projecting claw 318 and the claw recess 365 constitute a first centering portion A2. Even if comprised in this way, 1st centering part A2 can be combined with the function as a 2nd control part.

  The first centering portion A2 may be configured as shown in the comparative example, for example. Even in this case, the dynamic vibration absorber 40 is attached to the third intermediate plate 31 whose center is aligned with the rotation axis S. For this reason, the center of the dynamic vibration absorber 40 is not easily displaced from the rotation axis S.

-In 1st centering part A2, the structure which can accommodate the protrusion nail | claw 363 may be the structure which does not open to the inner periphery 312 of the 3rd intermediate | middle plate 31. FIG.
The dynamic vibration absorber may be a so-called centrifugal pendulum type dynamic vibration absorber that includes a mass body that acts as a centrifugal pendulum instead of a roller.

  The elastic member may be an arbitrary member other than the spring as long as the vibration accompanying the input torque fluctuation can be attenuated by its own elastic deformation. For example, the elastic member may be made of a flexible material such as synthetic resin.

  DESCRIPTION OF SYMBOLS 11 ... Damper apparatus, 14 ... Hub member, 20 ... 1st damper part, 21 ... Upstream damper disk as an input member, 215 ... Restriction storage chamber which comprises a control part, 22 ... Example of 1st elastic member An upstream damper spring, 23 ... a second intermediate plate constituting an intermediate member, 24 ... a first intermediate plate constituting an intermediate member, 243 ... a regulating projection constituting a regulating part, 30 ... a second Damper portion, 31 ... third intermediate plate constituting the intermediate member, 312 ... inner peripheral edge, 313 ... claw recess (housing chamber) constituting the centering portion, 318 ... projecting claw (projecting portion) constituting the centering portion, 314: Bottom surface (surface on the outer side in the radial direction) as an engaged portion, 316 ... Projection, 317 ... Engagement recess, 32 ... Downstream damper spring as an example of the second elastic member, 36 ... Output member under Side damper disk, 363... Projection claw (projection part) constituting centering part, 365... Claw recess (container chamber) constituting centering part, 40... Dynamic damper, 41. 415 ... Projection, 46 ... Roll as an example of mass body, 52 ... Gap, 61 ... First protrusion constituting the restricting part, 62 ... Second protrusion constituting the restricting part, A2 ... of the centering part 1st centering part as an example, A3 ... 2nd centering part as an example of another centering part, S ... rotation axis.

Claims (6)

A damper portion having an input member, a first elastic member, an intermediate member, a second elastic member, and an output member, which are arranged along the torque transmission path;
A vibration absorber having a main body disk and a mass body that is displaceable with respect to the main body disk, and a damper device that rotates about a predetermined rotation axis,
Wherein the center of the intermediate member provided with a centering section to match the axis of rotation, Ri name and the dynamic vibration reducer body disc is attached to the intermediate member,
A hub member that rotates about the rotation axis is provided on the radially inner side of the damper device, and the output member is coupled to the hub member so as to be integrally rotatable,
The centering portion is provided on a projecting portion that protrudes in an axial direction from one member of the intermediate member and the output member, and on a member that is provided on the other member of the intermediate member and the output member and is engaged with the projecting portion damper unit and having an engaging portion. The other member is formed with a storage chamber for storing a part of the protruding portion, and a radially outer surface of the storage chamber functions as the engaged portion,
The width in the circumferential direction of the housing chamber, the damper device according to claim 1 to be larger than the width dimension in the circumferential direction of the projecting portion. It said one member, while being positioned to overlap the hub member in the axial direction, according to claim 1 or claim gap between its inner periphery and the hub member is configured to be interposed 2 The damper device described in 1. In the center of the intermediate member of the damper portion, another centering portion that aligns the center of the main body disk of the dynamic vibration absorber is provided,
Other centering parts
A protrusion provided in any one of the intermediate member of the damper portion and the main body disk of the dynamic vibration absorber, and protruding in the axial direction;
The damper apparatus as described in any one of Claims 1-3 which has an engagement recessed part formed in either one of the said intermediate member and the said main body disc, and the front-end | tip of the protrusion part being accommodated. . A damper portion having an input member, a first elastic member, an intermediate member, a second elastic member, and an output member, which are arranged along the torque transmission path;
A vibration absorber having a main body disk and a mass body that is displaceable with respect to the main body disk, and a damper device that rotates about a predetermined rotation axis,
Wherein the center of the intermediate member provided with a centering section to match the axis of rotation, Ri name and the dynamic vibration reducer body disc is attached to the intermediate member,
In the center of the intermediate member of the damper portion, another centering portion that aligns the center of the main body disk of the dynamic vibration absorber is provided,
Other centering parts
A protrusion provided in any one of the intermediate member of the damper portion and the main body disk of the dynamic vibration absorber, and protruding in the axial direction;
A damper device comprising: an engaging recess formed on the other of the intermediate member and the main body disk and accommodating a tip of the protrusion . The intermediate member includes a front intermediate member and a rear intermediate member disposed at different positions in the axial direction, and the front intermediate member is centered on the rotation axis by the centering portion, and the dynamic vibration damping A main body disk of the container is attached, and the rear intermediate member is connected to the front intermediate member via a connector so as to be integrally rotatable,
A restricting portion for restricting rotational torsion between the input member and the rear intermediate member;
The restricting portion includes a restricting accommodation chamber formed in the input member, and a restricting protrusion extending from the rear intermediate member toward the restricting accommodation chamber,
The damper device as claimed in any one of claims 1 to 5, the width in the circumferential direction of the restricting accommodating chamber, is larger than the width in the circumferential direction of the regulating projection.