JP6286508B2 - Damper device - Google Patents

Description

  The present invention relates to a damper device that attenuates and outputs vibration associated with torque fluctuations input from a power source such as an engine.

  Conventionally, as this type of damper device, for example, a device described in Patent Document 1 has been proposed. The damper device includes a plurality of damper portions arranged from the upstream side to the downstream side of the torque transmission path, and a dynamic vibration absorber. 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”.

  In such a damper device, the downstream member constituting the first damper portion and the upstream member constituting the second damper portion are coupled so as to be integrally rotatable. A dynamic vibration absorber is attached to the upstream member of the second damper portion.

  As a dynamic vibration absorber provided in the damper device as described above, for example, as described in Patent Document 2, a centrifugal pendulum type dynamic vibration absorber is known. Such a dynamic vibration absorber includes a dynamic vibration absorber body formed of a plate material having a substantially annular shape in plan view. A plurality of rolling chambers arranged along the circumferential direction are formed on the outer side in the radial direction of the dynamic vibration absorber body, and rolling elements functioning as centrifugal pendulums are accommodated in the respective rolling chambers. Yes.

  And a dynamic vibration absorber main body is connected with the upstream member of a 2nd damper part, and a dynamic vibration absorber is attached to a 2nd damper part. As a method of attaching the dynamic vibration absorber to the damper portion, for example, as disclosed in Patent Document 1, a portion near the inner peripheral edge of the dynamic vibration absorber body is attached to the upstream member of the second damper portion by a rivet or the like. The method of attaching to the site | part of an inner peripheral side is mentioned.

Special table 2011-504986 gazette JP-A-8-93856

  By the way, the dynamic vibration absorber main body constituting the dynamic vibration absorber is made of a relatively thick plate material in order to increase the support rigidity with respect to the rolling elements. Therefore, the higher the weight of the dynamic vibration absorber, the heavier the damper device including the dynamic vibration absorber.

  The present invention has been made in view of such circumstances. The purpose is to provide a damper device capable of reducing the weight of the dynamic vibration absorber.

In the following, means for achieving the above object and its operation will be described.
One aspect of the present invention is based on a damper device in which a dynamic vibration absorber is connected to a damper portion. The damper portion includes an input side member that rotates about a specified rotation axis, an output side member that is coaxially rotatable with the input side member, an input side member and an output in a transmission path of input torque And an elastic member that is disposed between the side member and elastically deforms so as to attenuate vibrations caused by torque fluctuations. The dynamic vibration absorber includes a dynamic vibration absorber body that is coaxially disposed on the input side member, and a rolling element that rolls in a rolling chamber formed in the dynamic vibration absorber body. Then, a plurality of connecting portion between the damper unit in the dynamic vibration reducer body is circumferentially with either located outside the outermost same position or the outermost outer edge of the holding chamber is also in the radial direction Are located between the adjacent rolling chambers .

  One aspect of the present invention is based on a damper device in which a dynamic vibration absorber is connected to a damper portion. The damper portion includes an input side member that rotates about a specified rotation axis, an output side member that is coaxially rotatable with the input side member, an input side member and an output in a transmission path of input torque And an elastic member that is disposed between the side member and elastically deforms so as to attenuate vibrations caused by torque fluctuations. The dynamic vibration absorber includes a dynamic vibration absorber body that is coaxially disposed on the input side member, and a rolling element that rolls in a rolling chamber formed in the dynamic vibration absorber body. And the connection site | part with the damper part in a dynamic vibration damper main body is located in the same position as a rolling chamber in the radial direction, or the outer side from this rolling chamber. Further, the rolling chamber is opened on the inner peripheral side of the dynamic vibration absorber body. The rolling element is provided with a shaft portion that protrudes in the direction in which the rotation axis extends, and the damper portion or the dynamic vibration absorber supports the shaft portion and is provided at the outer edge in the radial direction of the rolling chamber. A guide hole is formed to guide the movement of the rolling elements along. Further, the guide hole has a shape such that the shaft portion comes into contact with the peripheral edge of the guide hole after the rolling element collides with a partition wall that divides each rolling chamber adjacent to each other in the circumferential direction.

  According to each of the above configurations, compared to the case where the connecting portion with the damper portion is provided radially inward from the rolling chamber in the dynamic vibration absorber main body, the dynamic vibration absorber main body has its inner edge portion radially outward. It becomes possible to make it a shape to be positioned. Therefore, the dynamic vibration absorber main body can be reduced in weight, and as a result, the dynamic vibration absorber can be reduced in weight.

The schematic diagram which shows one Embodiment of the damper apparatus of this invention. The end view of a damper device. The enlarged view to which a part of dynamic vibration absorber was expanded. The enlarged view to which a part of dynamic vibration absorber was expanded. The side view which shows the attachment structure of the dynamic vibration damper to the 3rd intermediate | middle plate. The schematic diagram which shows the damper apparatus of another embodiment. The schematic diagram which shows the damper apparatus of another embodiment. The schematic diagram which shows the damper apparatus of another embodiment. The schematic diagram which shows the damper apparatus of another embodiment.

  An embodiment embodying the present invention 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”, “radial direction” and “circumferential direction” centering on the rotation axis S indicated by a one-dot chain line in FIG. Suppose that In addition, the direction in which the rotation axis S extends (left and right in FIG. 2) is referred to as “axial direction”, “one side in the axial direction (left side in FIG. 2)” is referred to as “front side”, and “the other in the axial direction” The “side (right side in FIG. 2)” is referred to as “rear side”.

  As shown in FIG. 1, the damper device 11 of the present embodiment is arranged in order from upstream to downstream in a transmission path of torque output from a power source such as an engine. The damper part 30 is provided. That is, the second damper unit 30 is connected in series to the first damper unit 20, and the torque output from the first damper unit 20 is input to the second damper unit 30. The second damper portion 30 is connected to a dynamic vibration absorber 40 having a function of attenuating vibrations caused by input torque fluctuations. Therefore, in the present embodiment, the second damper portion 30 corresponds to “any one of the second and first damper portions”.

First, the first damper unit 20 will be described.
As shown in FIGS. 1 and 2, the first damper portion 20 includes an upstream damper disk 21 as an example of an input side member and an elastic member to which torque is transmitted from the upstream damper disk 21. And an upstream damper spring 22. The upstream damper disk 21 has a disk main 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 main body 211. When the torque is input to the torque input unit 212, the upstream damper disk 21 rotates about the specified rotation axis S. The disc body 211 is formed with a plurality of storage chambers 213 arranged at equal intervals along the circumferential direction. In the accommodation 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 storage 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. That is, the second intermediate plate 23 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. .

  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. Therefore, in the present embodiment, the first intermediate plate 24 functions as “the output side member of the first damper portion 20”. In the first intermediate plate 24 of the present embodiment, the inner peripheral side portion 242 located radially inward of the upstream damper spring 22 is on the front side of the disk body 211 of the upstream damper disk 21 (left side in FIG. 2). ).

Next, the second damper unit 30 will be described.
As shown in FIGS. 1 and 2, the second damper portion 30 includes a third intermediate plate 31 disposed on the front side (left side in FIG. 2) of the inner peripheral side portion 242 of the first intermediate plate 24, And a downstream damper spring 32 as an example of an elastic member disposed radially inward of the upstream damper spring 22. 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.

  In each of the second 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 same number of windows 34 as the downstream damper springs 32 are arranged along the circumferential direction in the second and third intermediate plates 24 and 31. 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. Therefore, in the present embodiment, the third intermediate plate 31 functions as “the input side member of the second damper portion 30”, and the third transmission portion 35 of the third intermediate plate 31 It functions as a “transmission portion that transmits torque to the elastic member (downstream damper spring 32) of the damper portion 30”.

  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 (left side in FIG. 2) of the first damper portion 20. The position in the radial direction of the outer peripheral edge of the connecting portion 311 is substantially the same as the position in the radial direction 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 second and third intermediate plates 24 and 31 in the axial direction. The downstream damper disk 36 is coaxially disposed on the upstream damper disk 21 and the first to third intermediate plates 24, 23, 31, and rotates relative to the second and third intermediate plates 23, 31. It is possible.

  A plurality of storage chambers 361 for storing the downstream damper springs 32 are formed in the downstream damper disk 36 along the circumferential direction. In such a storage chamber 361, the downstream damper spring 32 is arranged in a manner that can expand and contract in the circumferential direction. A portion located between the storage 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 “the output side member of the second damper portion 30”.

  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 of the downstream damper spring 32 in the axial direction, and the fourth transmission portion 362 is engaged with the center of the downstream damper spring 32 in the axial direction. Yes.

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.
As shown in FIGS. 2 and 3, the dynamic vibration absorber 40 of the present embodiment is located on the radially outer side than the downstream damper spring 32. Such a dynamic vibration absorber 40 includes a dynamic vibration absorber body 41 having a substantially annular shape in plan view. The dynamic vibration absorber main body 41 is coaxially disposed on the third intermediate plate 31 to be connected, and rotates integrally with the third intermediate plate 31. The dynamic vibration absorber body 41 has a thicker plate material (i.e., the plate material constituting the upstream damper disk 21, the first to third intermediate plates 24, 23, and 31 and the downstream damper disk 36) (i.e. , A plate having a wide width in the axial direction).

  The inner peripheral edge 411 as the inner edge of the dynamic vibration absorber main body 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 coupling portion 311 is located on the radially inner side of the dynamic vibration absorber body 41. That is, a part of the second damper portion overlaps with the dynamic vibration absorber main body 41 in the axial direction.

  The dynamic vibration absorber main body 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 to the inner peripheral edge 411 side of the dynamic vibration absorber body 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.

  A partition wall 44 that partitions each rolling chamber 43 is provided between the rolling chambers 43 adjacent to each other in the circumferential direction. The partition wall 44 has a shape along the radial direction. An annular cushioning material 45 is attached to the tip (radially inner end) side of the partition wall 44. Examples of the buffer material 45 include an O-ring made of a flexible material such as a synthetic resin.

  The tip of the partition wall 44 relative to the mounting position of the cushioning material 45 is a wide portion 441 as an example of a restricting means that spreads on both sides in the circumferential direction. An end portion in the circumferential direction of the wide portion 441 is located on the inner side in the circumferential direction with respect to the outer peripheral edge of the cushioning material 45.

  Further, a mounting hole 501 penetrating in the axial direction is formed between the rolling chambers 43 adjacent to each other in the circumferential direction and outside the partition wall 44 in the radial direction (see FIG. 3). The mounting hole 501 is located at substantially the same position as the outermost part of the outer edge 431 of the rolling chamber in the radial direction. In addition, the site | part in which the attachment hole 501 was formed in the dynamic vibration damper main body 41 is equivalent to a "connection site | part."

  As shown in FIGS. 3 and 4, the dynamic vibration absorber 40 of this embodiment includes a roller 46 as an example of a rolling element that rolls in a rolling chamber 43. The roller 46 has a substantially circular shape in plan view, and is thicker than the dynamic vibration absorber main body 41. An annular groove 462 is provided on the peripheral surface 461 of the roller 46 over the entire circumference. The width dimension (that is, the length dimension in the axial direction) of the groove 462 is slightly larger than the thickness dimension (that is, the length dimension in the axial direction) of the dynamic vibration absorber main body 41.

  Further, the first shaft portion 464 protrudes from the center to the rear side from the first side surface 463 which is the side surface of the roller 46 facing the connecting portion 311 of the third intermediate plate 31. Similarly, the second shaft portion 466 protrudes from the center to the front side from the second side surface 465 positioned on the opposite side of the first side surface 463 in the roller 46.

  The dynamic vibration absorber 40 of the present embodiment further includes an annular guide member 47 disposed on the opposite side of the connecting portion 311 of the third intermediate plate 31 with the dynamic vibration absorber body 41 interposed therebetween. The guide member 47 is coaxially disposed in the dynamic vibration absorber body 41 with a gap interposed between the guide member 47 and the dynamic vibration absorber body 41. In such a guide member 47, a guide hole 471 as an example of a second guide portion is formed at the same position in the circumferential direction of the rolling chamber 43. The second shaft portion 466 is inserted into the guide hole 471. That is, the guide member 47 supports the roller 46 via the second shaft portion 466. The edge 472 on the radially inner side of the guide hole 471 guides the relative movement with respect to the dynamic vibration absorber body 41 along the outer edge 431 of the rolling chamber 43.

  As shown in FIGS. 2, 3, and 5, the guide member 47 is attached so as to rotate integrally with the dynamic vibration absorber main body 41. A second recess 48 in which the bottom wall 481 abuts the dynamic vibration absorber body 41 is formed at a position where the guide member 47 is attached to the dynamic vibration absorber body 41. The bottom wall 481 of the second recess 48 is in contact with the connection portion of the dynamic vibration absorber main body 41. A second communication hole 502 communicating with the attachment hole 501 is formed through the bottom wall 481 of the second recess 48. That is, the 2nd recessed part 48 is located between each rolling chamber 43 adjacent to each other in the circumferential direction. Therefore, in the present embodiment, the second recess 48 corresponds to “another recess”.

  Further, the dynamic vibration absorber body 41 is disposed in a state where a gap is interposed between the dynamic vibration absorber body 41 and the connecting portion 311 of the third intermediate plate 31. The reason why the gap is provided in this way is as follows.

  (Reason 1) It is necessary to increase the weight of the roller 46 in order to increase the damping efficiency of vibration caused by torque fluctuation, and a thick roller 46 (that is, a roller having a wide lateral width in FIG. 2) is employed. That.

(Reason 2) To secure a space in which such a thick roller 46 rolls.
In the connection portion 311 of the third intermediate plate 31, a guide hole 312 as an example of the first guide portion is formed at the same position in the circumferential direction of the rolling chamber 43. The peripheral shape of the guide hole 312 is substantially the same as the peripheral shape of the guide hole 471 formed in the guide member 47, and the first shaft portion 464 of the roller 46 is formed in the guide hole 312 of the connecting portion 311. It is inserted. That is, the connecting portion 311 supports the roller 46 via the first shaft portion 464.

  A first recess 49 in which the bottom wall 491 abuts the dynamic vibration absorber main body 41 is formed at a position where the dynamic vibration absorber main body 41 is attached in the connecting portion 311. The bottom wall 491 of the first recess 49 is in contact with the connection portion of the dynamic vibration absorber main body 41. A first communication hole 503 communicating with the attachment hole 501 is formed through the bottom wall 491 of the first recess 49. That is, the 1st recessed part 49 is located between each rolling chamber 43 adjacent to each other in the circumferential direction. Accordingly, in the present embodiment, the first communication hole 503, the attachment hole 501, and the second communication hole 502 that are continuous along the axial direction constitute the through hole 50 that extends in the axial direction. The first concave portion 49 corresponds to a “concave portion”.

  The dynamic vibration absorber main body 41 and the guide member 47 are attached to the connecting portion 311 of the third intermediate plate 31 so as to be integrally rotatable by a rivet 51 as an example of a connecting member. The rivet 51 has a head portion 511 and a shaft portion 512 extending in the axial direction. In the present embodiment, the head 511 of the rivet 51 is locked to the guide member 47. That is, the tip 513 of the shaft portion 512 of the rivet 51 is inserted into the through hole 50 from the guide member 47 side and protrudes out of the through hole 50 from the connecting portion 311 side. In this state, the tip 513 of the shaft portion 512 is caulked to the connecting portion 311. Thereby, the front-end | tip 513 of the axial part 512 becomes thicker than the other part. At this time, the head 511 of the rivet 51 is located in the second recess 48 of the guide member 47, and the tip 513 of the shaft portion 512 of the rivet 51 is the first of the connecting portion 311 of the third intermediate plate 31. In the recess 49.

  When the rivet 51 is caulked in this way, the portion located in the first communication hole 503 formed in the coupling portion 311 of the third intermediate plate 31 in the shaft portion 512 is also thickened. Therefore, the degree of adhesion between the shaft portion 512 of the rivet 51 and the peripheral wall of the first communication hole 503 formed in the connecting portion 311 of the third intermediate plate 31 is increased, and the third intermediate plate 31 and the dynamic vibration absorber are increased. The connection strength with the main body 41 is increased. As a result, the efficiency of torque transmission to the dynamic vibration absorber main body 41 via the third intermediate plate 31 is improved.

Next, the operation of the damper device 11 of this embodiment will be described.
When torque is input to the damper device 11, this torque is output via the first damper portion 20 and the second damper portion 30. At this time, if fluctuation occurs in the input torque, the upstream damper spring 22 and the downstream damper spring 32 expand and contract to attenuate the vibration associated with the torque fluctuation.

  Further, when torque is input to the damper device 11 and the upstream damper disk or the like rotates, this rotation is also transmitted to the dynamic vibration absorber 40. Then, the dynamic vibration absorber body 41 rotates integrally with the third intermediate plate 31. At this time, if the rotational speed of the dynamic vibration absorber main body 41 is substantially constant, the roller 46 is moved to the outermost portion of the outer edge portion 431 of the rolling chamber 43 (that is, the outer edge portion) by the centrifugal force acting by the rotation. It is located at the center in the circumferential direction. The roller 46 rotates substantially integrally with the dynamic vibration absorber main body 41.

  On the other hand, when the rotational speed of the dynamic vibration absorber main body 41 changes, that is, when the torque input to the dynamic vibration absorber 40 changes, the roller 46 moves along the outer edge 431 of the rolling chamber 43. It is displaced relative to the vessel body 41. As a result, the vibration accompanying the torque fluctuation input to the damper device 11 is attenuated by the dynamic vibration absorber 40.

  Then, when the torque transmission to the damper device 11 is interrupted, the rotation of the dynamic vibration absorber body 41 stops. Then, the roller 46 is displaced in the rolling chamber 43 by its own weight. The displacement of the roller 46 at this time is not necessarily a displacement along the outer edge 431. For example, the roller 46 may fall toward the partition wall 44 positioned vertically below without being along the outer edge 431.

  In such a case, the roller 46 collides with the cushioning material 45 attached to the partition wall 44, and the generation of vibrations and impact sounds associated with the collision is suppressed. In addition, a wide portion 441 is provided at the tip of the partition wall 44 of the present embodiment. Therefore, when the roller 46 collides with the buffer material 45, the roller 46 abuts against the wide portion 441 immediately after the collision, and further displacement of the roller 46 is restricted. As a result, further bending of the cushioning material 45 due to the collision of the rollers 46 is suppressed. That is, application of an excessive load to the buffer material 45 is suppressed, and the life of the buffer material 45 is extended.

As described above, in the present embodiment, the following effects can be obtained.
(1) In the present embodiment, the dynamic vibration absorber main body 41 is attached to the third intermediate plate 31 constituting the second damper portion 30 on the radially outer side. Therefore, compared with the case where the dynamic vibration absorber body is attached to the second damper portion 30 on the radially inner side of the rolling chamber, the dynamic vibration absorber body 41 has a shape in which the inner peripheral edge 411 is located on the radially outer side. can do. As a result, the dynamic vibration absorber body 41 can be reduced in weight, and the dynamic vibration absorber 40 including the dynamic vibration absorber body 41 can be reduced in weight.

  (2) Since the inner peripheral edge 411 of the dynamic vibration absorber main body 41 is positioned on the radially outer side in this way, the space on the radially inner side than the rolling chamber 43 can be effectively utilized. That is, the design freedom of the damper device 11 including the dynamic vibration absorber 40 of the present embodiment can be improved.

  For example, in the present embodiment, a part of the second damper portion 30 overlaps the position of the dynamic vibration absorber body 41 in the axial direction. Therefore, compared with the case where the 2nd damper part 30 is arrange | positioned in the position different from the dynamic vibration absorber 40 and an axial direction, size reduction in the axial direction of the damper apparatus 11 can be achieved.

  (3) In the present embodiment, each rolling chamber 43 is formed at substantially the same position as the upstream damper spring 22 in the radial direction. Therefore, as compared with the case where the rolling chamber 43 is formed at the same position in the radial direction as the downstream damper spring 32, it is possible to form many rolling chambers 43 while widening the movable range of the rollers 46. Become.

  (4) The first recess 49 is formed in the connecting portion 311 of the third intermediate plate 31, and the tip 513 of the shaft portion 512 of the rivet 51 is accommodated in the first recess 49. . Therefore, it is suppressed that the front-end | tip 513 of the axial part 512 protrudes back rather than the connection part 311. FIG. As a result, the distance between the connecting portion 311 and the first damper portion 20 can be narrowed, and the damper device 11 can be downsized in the axial direction.

  (5) Further, the guide member 47 is formed with a second recess 48, and the head 511 of the rivet 51 is accommodated in the second recess 48. Therefore, the head 511 is suppressed from projecting forward from the guide member 47. As a result, the gap between the damper device 11 and the peripheral member located on the front side of the damper device 11 can be narrowed. That is, it becomes possible to contribute to miniaturization of the power transmission device including the damper device 11 in the axial direction.

  (6) In this embodiment, the 1st recessed part 49 and the 2nd recessed part 48 are located between each rolling chamber 43 adjacent to each other in the circumferential direction. Therefore, the rolling chamber 43 can be provided on the outer side in the radial direction as much as possible in the dynamic vibration absorber main body 41, and the damping efficiency of vibration accompanying the torque fluctuation by the dynamic vibration absorber 40 can be improved. Further, the radial size of the dynamic vibration absorber main body 41 can be reduced as compared with the case where the first concave portion 49 and the second concave portion 48 overlap with the rolling chamber 43 in the circumferential direction.

  (7) In this embodiment, since the tip 513 of the shaft portion 512 of the rivet 51 is caulked to the connecting portion 311 of the third intermediate plate 31, the tip 513 of the shaft portion 512 becomes thick. At this time, a portion of the shaft portion 512 located in the first communication hole 503 formed in the connection portion 311 of the third intermediate plate 31 is also thickened. As a result, the degree of adhesion between the distal end side of the shaft portion 512 and the peripheral wall of the first communication hole 503 formed in the connection portion 311 of the third intermediate plate 31 is increased, and the third intermediate plate 31 and the dynamic vibration absorption are increased. The connection strength with the container body 41 is increased. Therefore, the efficiency of torque transmission to the dynamic vibration absorber body 41 via the third intermediate plate 31 can be improved.

  (8) When the torque transmission to the damper device 11 is interrupted and the dynamic vibration absorber main body 41 does not rotate, the roller 46 falls downward in the vertical direction by its own load. At this time, the roller 46 may not be displaced along the outer edge 431 of the rolling chamber 43, and the roller 46 may collide with the partition wall 44. In this regard, in the present embodiment, the buffer material 45 is attached to the partition wall 44. For this reason, when the roller 46 collides with the buffer material 45, it is possible to suppress the generation of vibration and abnormal noise associated with the impact.

  In addition, when the dynamic vibration absorber main body 41 is rotating, the roller 46 hardly comes into contact with the partition wall 44. Therefore, even if the cushioning material 45 is attached to the partition wall 44, the vibration damping effect associated with the torque fluctuation by the dynamic vibration absorber 40 is not reduced.

  (9) Moreover, the wide part 441 is formed in the front-end | tip of the partition wall 44 of this embodiment. Then, the roller 46 colliding with the cushioning material 45 comes into contact with the wide portion 441, and further displacement of the cushioning material 45 is restricted by the wide portion 441. As a result, after the roller 46 collides with the wide portion 441, deformation of the cushioning material 45 accompanying the displacement of the roller 46 is suppressed. Thereby, the load which acts on the shock absorbing material 45 can be decreased, and the lifetime of this shock absorbing material 45 can be achieved.

  (10) In the present embodiment, the guide hole 312 is provided in the connecting portion 311 of the third intermediate plate 31. Therefore, the connecting portion 311 supports the roller 46 via the first shaft portion 464. Therefore, compared with the case where a guide member is newly provided on the rear side of the dynamic vibration absorber main body 41 and the roller 46 is supported by the guide member, an increase in the number of parts can be suppressed by the amount that the guide member can be omitted. it can. Further, the damper device 11 can be downsized in the axial direction.

In addition, you may change this embodiment into another embodiment as follows.
When attaching the dynamic vibration absorber 40 to the connecting portion 311 of the third intermediate plate 31, a part of the head portion 511 of the rivet 51 may protrude forward from the second recess 48. Further, a part of the tip 513 of the shaft portion 512 of the rivet 51 may protrude rearward from the first recess 49.

  When attaching the dynamic vibration absorber 40 to the connecting portion 311 of the third intermediate plate 31, the head 511 of the rivet 51 is locked to the connecting portion 311 (that is, the bottom wall 491 of the first recess 49), and the rivet 51 The tip 513 of the shaft portion 512 may be engaged with the guide member 47 (that is, the bottom wall 481 of the second recess 48).

  The guide hole 312 may not be provided in the connecting portion 311 of the intermediate plate 31. In this case, a guide member may be newly provided between the dynamic vibration absorber main body 41 and the connecting portion 311 in the axial direction, and the guide hole 312 may be formed in the guide member. In this case, it is preferable that this guide member is attached to the dynamic vibration absorber main body 41 so as to be integrally rotatable.

  -The wide part 441 does not need to be provided at the tip of the partition wall 44. In this case, another member different from the cushioning material may be separately attached to the tip of the partition wall 44. When this configuration is adopted, the restricting means is configured by another member attached to the tip of the partition wall 44.

  Further, after the roller 46 collides with the cushioning material 45 attached to the partition wall 44, the first shaft portion 464 and the second shaft portion 466 of the roller 46 contact the peripheral edge of the guide hole 312 and the peripheral edge of the guide hole 471. You may design the shape of each guide hole 312,471 so that it may contact | connect. In this case, the shaft portions 464 and 466 and the guide holes 312 and 471 constitute “regulating means”.

A sleeve-shaped cushioning material may be attached to the partition wall 44.
The rolling chamber 43 may be configured not to open to the inner peripheral edge 411 side of the dynamic vibration absorber main body 41.

  The connecting member for attaching the dynamic vibration absorber main body 41 to the connecting portion 311 of the third intermediate plate 31 may be a member other than the rivet 51. For example, the connecting member may be a bolt.

  -The 1st recessed part 49 does not need to be provided in the connection part 311 of the 3rd intermediate | middle plate 31. FIG. In this case, you may provide the spacer for filling the clearance gap between the connection part 311 and the connection site | part of the dynamic vibration damper main body 41. FIG.

  Similarly, the second recess 48 may not be provided in the guide member 47. In this case, you may provide the spacer for filling the clearance gap between the guide member 47 and the connection site | part of the dynamic vibration damper main body 41. FIG.

  When the dynamic vibration absorber main body 41 and the guide member 47 are made of the same material as the third intermediate plate 31, the dynamic vibration absorber 40 is attached to the third intermediate plate 31 without using a connecting member such as the rivet 51. Also good. For example, the dynamic vibration absorber main body 41 may be attached to the third intermediate plate 31 by welding, and the guide member 47 may be attached to the dynamic vibration absorber main body 41 by welding.

-The 2nd damper part 30 does not need to overlap with the dynamic vibration absorber main body 41 in an axial direction.
-You may attach the dynamic vibration damper 40 to the 1st intermediate plate 24 of the 1st damper part 20, as shown in FIG. In this case, the first damper portion 20 corresponds to one damper portion.

-You may attach the dynamic vibration damper 40 to the downstream damper disk 36 of the 2nd damper part 30, as shown in FIG. In this case, the second damper part 30 corresponds to one damper part.
-You may attach the dynamic vibration damper 40 to the upstream damper disk 21 of the 1st damper part 20, as shown in FIG. In this case, the first damper portion 20 corresponds to one damper portion.

The damper device 11 may have a configuration in which three or more damper units are connected in series.
As shown in FIG. 9, the damper device 11 may include a single damper unit 200 and a dynamic vibration absorber 40. In this case, the dynamic vibration absorber 40 may be attached to the output side member 203 of the damper unit 200. The dynamic vibration absorber 40 may be attached to the input side member 201 that transmits torque to the output side member 203 via the damper spring 202.

The mounting hole 501 may be formed on the radially outer side than the rolling chamber 43.
The dynamic vibration absorber body 41 may be configured by overlapping a plurality of plate materials.

  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.

-A dynamic vibration absorber may be provided with the rolling element which acts as a centrifugal pendulum instead of a roller.
Next, technical ideas that can be grasped from the above embodiments and other embodiments will be added below.

(A) A member to which the dynamic vibration absorber main body is connected in the damper portion is provided with a connection portion that is disposed in a state in which a gap is interposed between the dynamic vibration absorber main body in the direction in which the rotation axis extends. The connecting portion is formed with a recessed portion in which the bottom wall contacts the connecting portion of the dynamic vibration absorber body,
A through hole is formed through the bottom wall of the recess and the connection portion of the dynamic vibration absorber body in the direction in which the rotation axis extends, and the dynamic vibration absorber body is connected to the connection member by a connection member inserted through the through hole. Damper device connected to the part.

  DESCRIPTION OF SYMBOLS 11 ... Damper apparatus, 20 ... 1st damper part, 200 ... Damper part, 201 ... Input side member, 203 ... Output side member, 21 ... Upstream damper disk as an example of an input side member, 22 ... Example of elastic member Upstream damper spring, 24 ... first intermediate plate as an example of output side member, 30 ... second damper portion, 31 ... third intermediate plate as an example of output side member, 311 ... connecting portion, 312 ... Guide hole as an example of the first guide part, 32 ... Downstream damper spring as an example of an elastic member, 35 ... Third transmission part as a transmission part, 36 ... Downstream side as an example of an output side member Damper disk, 40 ... dynamic vibration absorber, 41 ... dynamic vibration absorber body, 411 ... inner peripheral edge, 43 ... rolling chamber, 431 ... outer edge as a radially outer edge, 44 ... partition wall, 441 ... regulating means One Wide portion as 45, cushioning material, 46 ... roller as an example of rolling element, 463 ... first side surface, 464 ... first shaft portion, 465 ... second side surface, 466 ... second shaft portion, 47 ... Guide member, 471 ... Guide hole as an example of the second guide part, 48 ... Second concave part as another concave part, 481 ... Bottom wall, 49 ... First concave part, 491 ... Bottom wall, 50 ... Through holes, 51... Rivets as an example of a connecting member, 511... Head, 512.

Claims (2)

In the damper device in which the dynamic vibration absorber is connected to the damper portion,
The damper portion includes an input-side member that rotates about a specified rotation axis, an output-side member that can be relatively rotated coaxially with the input-side member, the input-side member in a transmission path of input torque, An elastic member that is disposed between the output side member and elastically deforms so as to attenuate vibrations associated with torque fluctuations,
The dynamic vibration absorber includes a dynamic vibration absorber body disposed coaxially with the input side member, and a rolling element that rolls in a rolling chamber formed in the dynamic vibration absorber body,
A plurality of connecting portion between the damper portions in the dynamic vibration reducer body are both together are positioned outside the outermost same position or the same outermost outer edge of the holding chamber in the radial direction The damper device is located between the rolling chambers adjacent to each other in the circumferential direction . In the damper device in which the dynamic vibration absorber is connected to the damper portion,
The damper portion includes an input-side member that rotates about a specified rotation axis, an output-side member that can be relatively rotated coaxially with the input-side member, the input-side member in a transmission path of input torque, An elastic member that is disposed between the output side member and elastically deforms so as to attenuate vibrations associated with torque fluctuations,
The dynamic vibration absorber includes a dynamic vibration absorber body disposed coaxially with the input side member, and a rolling element that rolls in a rolling chamber formed in the dynamic vibration absorber body,
The connecting portion with the damper portion in the dynamic vibration absorber body is located at the same position as the rolling chamber or outside the rolling chamber in the radial direction,
The rolling chamber is open to the inner peripheral side of the dynamic vibration absorber body,
The rolling element is provided with a shaft portion that protrudes in a direction in which the rotation axis extends.
The damper portion or the dynamic vibration absorber is formed with a guide hole that supports the shaft portion and guides the movement of the rolling element along a radially outer edge of the rolling chamber,
The guide hole has a shape such that the shaft portion comes into contact with the peripheral edge of the guide hole after the rolling element collides with a partition wall that partitions the rolling chambers adjacent to each other in the circumferential direction. A damper device.

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