JP4985158B2 - Torque fluctuation absorber - Google Patents

Description

  The present invention relates to a torque fluctuation absorber.

  Some flywheels provided between an engine crankshaft and a clutch device incorporate a torque fluctuation absorbing device. A torque fluctuation absorber incorporated in the flywheel absorbs (suppresses) fluctuation torque generated by the engine. As a basic configuration of the torque fluctuation absorbing device, a first inertia body side member connected to an engine crankshaft, a second inertia body side member connected to a clutch device, a first inertia body side member, and a second inertia body side member And a damper portion for attenuating vibrations of relative rotation. In the conventional torque fluctuation absorber, in the damper portion, a sliding bearing bush is interposed between the first inertia body side member and the second inertia body side member, and the first inertia body side member and the second inertia body side member have the rotation shaft. Some are configured to be rotatable relative to the center. For example, in Patent Document 1, the sliding bearing bush is pushed into a receiving portion limited by the inner surface of the secondary mass body (second inertial body side member), or outside the primary mass body (first inertial body side member). The diameter of the sliding surface (sliding surface) of the sliding bearing bush which is pressed against the pin limited by the side surface and is still exposed in this assembled state is sized.

JP-A-11-108116

  However, the conventional example does not have a structure for preventing foreign matters such as dust, dust, water, sand, and friction powder from entering the sliding surface of the sliding bearing bush. In other words, both end surfaces of the sliding bearing bush are in communication with the external space, and foreign matter easily enters the vicinity of the end surface of the sliding bearing bush. When foreign matter enters the vicinity of the end face of the sliding bearing bush, a gap is generated on the sliding surface of the sliding bearing bush due to the relative axial vibration of the primary mass body and the secondary mass body, and the foreign matter enters the gap. When foreign matter enters the sliding surface of the sliding bearing bush, the frictional resistance of the sliding surface increases, noise is generated, and the wear of the friction surface is accelerated. As wear of the friction surface progresses, the primary mass body and the secondary mass body are eccentric, the vibration of the apparatus increases, and the life of the apparatus is shortened.

  The main object of the present invention is to suppress or prevent foreign matter from entering the sliding surface of the sliding bearing in the torque fluctuation absorber.

In one aspect of the present invention, in the torque fluctuation absorber, a rotatable first inertial body side member, a second inertial body side member rotatable with respect to the first inertial body side member, and the first inertial body side member; A damper portion for attenuating vibration caused by relative rotation with the second inertial body side member; and a slide bearing disposed between the first inertial body side member and the second inertial body side member, The inertial body side member has a first cylindrical portion extending toward the second inertial body side member, and the second inertial body side member includes a second cylindrical portion extending toward the first inertial body side member. And the sliding bearing is disposed between the first cylindrical portion and the second cylindrical portion, between the first inertial body side member and the second cylindrical portion, and on the second inertial body side. In each gap between the member and the first cylindrical portion, the sliding bearing Has a partition portion for partitioning an end surface from the external space, the partition portion may have interference in the rotation axis direction of the first inertia body side member and said second inertia body side member.

  In the torque fluctuation absorber according to the present invention, it is preferable that the partition portion is a partition member that is integrally fixed or attached to one or both of the first inertia body side member and the second inertia body side member.

  In the torque fluctuation absorber according to the present invention, the partition member is preferably made of an elastic material.

  In the torque fluctuation absorber according to the present invention, the partition member is preferably configured by combining one or two of rubber, resin, and metal.

  In the torque fluctuation absorber according to the aspect of the invention, it is preferable that the partition is a part of one or both of the first inertial body side member and the second inertial body side member.

  In the torque fluctuation absorber according to the present invention, it is preferable that a lubricant is partially filled in a space between the partition portion and the sliding bearing.

  In the torque fluctuation absorber according to the present invention, one or both of the first inertial body side member and the second inertial body side member have a surface formed so as to keep the airflow in the external space away from the sliding bearing. preferable.

  According to the present invention, the partitioning portion partitions the sliding surface of the sliding bearing from the external space, so that intrusion of foreign matter is suppressed or prevented and the life of the device can be improved. Further, by preventing or preventing the entry of foreign matter, it is possible to suppress the generation of abnormal noise at the sliding bearing. In addition, a sliding bearing can be used on a vehicle traveling on a rough road without worrying about dust, and the cost can be reduced as compared with the use of a ball bearing. Furthermore, since the lubricant can be enclosed in the space partitioned by the partitioning portion, the life of the apparatus can be extended. Further, if biasing means such as a disc spring is used, the hysteresis characteristic can be adjusted.

(Embodiment 1)
A torque fluctuation absorber according to Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view schematically showing the configuration of a flywheel having a torque fluctuation absorber according to Embodiment 1 of the present invention.

  Referring to FIG. 1, the flywheel 1 is a flyhole damper provided with a torque fluctuation absorber having a first inertial body side member 2, a second inertial body side member 3, and a damper portion 4. The flywheel 1 is connected to a crankshaft (not shown) by a bolt 6 at a first inertial body side member 2.

  The first inertial body side member 2 is an assembly of members that rotate integrally with the stator plate 11, and is supported by the second inertial body side member 3 via a bush 29 so as to be relatively rotatable. The second inertial body side member 3 is an assembly of members that rotate integrally with the mass plate 27, and supports the first inertial body side member 2 via the bush 29 so as to be relatively rotatable. The damper portion 4 is a portion that attenuates vibrations caused by relative rotation of the first inertial body side member 2 and the second inertial body side member 3.

  The stator plate 11 is a disk-shaped (ring-shaped) plate supported by the mass plate 27 so as to be relatively rotatable via a bush 29, and is a constituent member of the first inertial body side member 2. The stator plate 11 is connected to a crankshaft (not shown) together with the drive plate 12 and the side plate 13 by bolts 6 at the inner peripheral portion. The stator plate 11 has a cylindrical portion 11a whose outer peripheral portion extends to the mass plate 27 side (right side in FIG. 1). The inner peripheral surface or the tip surface of the cylindrical portion 11a is in contact with the bush 29 so as to be slidable. A partition member 30 is integrally fixed to the outer peripheral surface near the tip of the cylindrical portion 11a.

  The drive plate 12 is a disk-shaped (ring-shaped) plate and is a constituent member of the first inertial body side member 2 and the damper portion 4. The drive plate 12 has an inner peripheral portion disposed between the stator plate 11 and the side plate 13, and is connected to a crankshaft (not shown) together with the stator plate 11 and the side plate 13 by bolts 6 at the inner peripheral portion. . The drive plate 12 has an outer peripheral portion extending in a space between the first driven plate 19 and the second driven plate 20, and a window portion for accommodating the spring seat 17 and the coil spring 18 in the extended portion. The circumferential end surface of the window portion is in contact with the spring seat 17 so as to be able to contact and separate. The drive plate 12 has a convex portion 12a at the outer peripheral end. The rotation of the convex portion 12 a is restricted to a predetermined range by the stopper portion 19 b of the first driven plate 19.

  The side plate 13 is a disk-shaped (ring-shaped) plate disposed on the crankshaft (not shown) side, and is a constituent member of the first inertial body-side member 2. The side plate 13 is connected to a crankshaft (not shown) together with the stator plate 11 and the drive plate 12 by bolts 6 at the inner peripheral portion. A startering gear 14 is integrally fixed to the outer peripheral portion of the side plate 13. The side plate 13 is formed with an anti-rotation portion for attaching the disc spring 15 to the inner peripheral side of the startering gear 14 so as not to be relatively rotatable. The anti-rotation portion of the fastener 16 or the side plate 13 is provided at the anti-rotation portion. The disc spring 15 is fixed by caulking partly in the circumferential direction.

  The starter ring gear 14 is a gear that is integrally fixed to the outer peripheral portion of the side plate 13 and meshes with a gear of a starter motor (not shown).

  The disc spring 15 is a ring-shaped member that biases the thrust member 28 toward the side plate 13. The disc spring 15 is attached to the rotation preventing portion of the side plate 13 so as not to be relatively rotatable, and is fixed so as not to move in the axial direction by caulking of the fastener 16 or a part of the side plate 13 in the circumferential direction.

  The fastener 16 is a member for fixing the disc spring 15 to the detent portion of the side plate 13.

  The spring seat 17 is a component of the damper portion 4 and is accommodated in a window portion formed in the first driven plate 19, the second driven plate 20, and the side plate 13, and the end portion of the window portion and the coil spring 18. Between.

  The coil spring 18 is a constituent member of the damper portion 4 disposed in the space between the side plate 13 and the mass plate 27. The coil spring 18 is accommodated in a window portion formed in the first driven plate 19, the second driven plate 20, and the drive plate 12, and is in contact with the spring seats 17 disposed at both ends. The coil spring 18 contracts when the first driven plate 19, the second driven plate 20 and the drive plate 12 rotate relative to each other, and the rotational fluctuations of the first driven plate 19, the second driven plate 20 and the drive plate 12 are reduced. Absorb.

  The first driven plate 19 is a plate formed in a ring shape and is a constituent member of the damper portion 4. The first driven plate 19 has a window portion for accommodating the spring seat 17 and the coil spring 18 at the inner peripheral portion, and a circumferential end surface of the window portion is in contact with the spring seat 17 so as to be able to contact and separate. The first driven plate 19 is fixed by the second driven plate 20 and the rivet 21 on the outer peripheral side of the coil spring 18. The first driven plate 19 has a convex portion 19a that engages with the anti-rotation portion 28a of the thrust member 28, and is configured to be relatively unrotatable with the thrust member 28 or to have a predetermined play angle in the rotational direction. It is configured to be movable in the direction. The first driven plate 19 has a stopper portion 19b that restricts the rotation of the convex portion 12a of the drive plate 12 to a predetermined range.

  The second driven plate 20 is a plate formed in a ring shape and is a constituent member of the damper portion 4. The second driven plate 20 has a window portion for accommodating the spring seat 17 and the coil spring 18 at the inner peripheral portion, and a circumferential end surface of the window portion is in contact with the spring seat 17 so as to be able to contact and separate. The second driven plate 20 is fixed by the first driven plate 19 and the rivet 21 on the outer peripheral side of the coil spring 18. The second driven plate 20 has an outer peripheral portion that extends to the outer peripheral surface of the mass plate 27, and is integrally fixed to the mass plate 27 by a rivet 26 at the extended portion.

  The rivet 21 is a member for integrally fixing the first driven plate 19 and the second driven plate 20.

  The rivet 26 is a member for integrally fixing the second driven plate 20 and the mass plate 27.

  The mass plate 27 is a ring-shaped plate that also becomes a part of a clutch device (not shown), and is a constituent member of the second inertial body side member 3. The second driven plate 20 is integrally fixed to the mass plate 27 by a rivet 26 at the outer peripheral portion. The mass plate 27 has a cylindrical portion 27b extending on the stator plate 11 side (left side in FIG. 1) on the inner peripheral portion. An outer peripheral surface or a terminal corner of the cylindrical portion 27b is in contact with the bush 29 so as to be slidable. A partition member 31 is integrally fixed to the vicinity of the tip of the cylindrical portion 27b.

  The thrust member 28 is a ring-shaped member disposed on the outer peripheral side of the damper portion 4 and between the side plate 13 and the disc spring 15. The thrust member 28 is slidably in contact with the side plate 13 and the disc spring 15. The thrust member 28 is biased toward the side plate 13 by the disc spring 15. The thrust member 28 is configured to have a non-rotating portion 28a on the inner peripheral portion that is not rotatable relative to the first driven plate 19 or has a predetermined play angle in the rotational direction, and is axially movable. And is engaged with the convex portion 19a of the first driven plate 19 at the rotation preventing portion 28a.

  The bush 29 is a sliding bearing that supports a rotating portion between the cylindrical portion 11 a of the stator plate 11 and the cylindrical portion 27 b of the mass plate 27. The bush 29 has a cylindrical shape between the cylindrical portion 11a and the cylindrical portion 27b, and has a flange shape so that the end portion on the mass plate 27 side is arranged between the distal end portion of the cylindrical portion 11a and the mass plate 27. It has become.

  The partition member 30 is a member that partitions the end surface of the bush 29 from the external space. The partition member 30 is integrally fixed to the outer peripheral surface near the tip of the cylindrical portion 11 a of the stator plate 11. The partition member 30 has a tightening allowance for pressing against the mass plate 27. Rubber, resin, or metal can be used for the partition member 30. The space on the end face side of the bush 29 partitioned by the partition member 30 can be partially filled with a lubricant (not shown).

  The partition member 31 is a member that partitions the end surface of the bush 29 from the external space. The partition member 31 is integrally fixed near the tip of the cylindrical portion 27b of the mass plate 27. The partition member 31 has a fastening allowance for pressing against the stator plate 11. Rubber, resin, or metal can be used for the partition member 31. The space on the end face side of the bush 29 partitioned by the partition member 31 can be partially filled with a lubricant (not shown).

  According to the first embodiment, by partitioning the bush 29 from the external space by the partition members 30 and 31, entry of foreign matter is suppressed or prevented, and the life of the apparatus can be improved. In addition, by preventing or preventing the entry of foreign matter, it is possible to suppress the occurrence of abnormal noise due to an increase in sliding resistance at the bush 29 due to the entry of foreign matter. In addition, the bush 29 can be used without worrying about dust even on a vehicle traveling on a rough road, and the cost can be reduced as compared with the case of using a ball bearing. Furthermore, since the lubricant can be enclosed in the space partitioned by the partition members 30 and 31, the life of the apparatus can be extended.

(Embodiment 2)
A torque fluctuation absorber according to Embodiment 2 of the present invention will be described with reference to the drawings. FIG. 2 is a partial cross-sectional view schematically showing a configuration in the vicinity of a rotating portion between a first inertial body side member and a second inertial body side member of a flywheel having a torque fluctuation absorber according to Embodiment 2 of the present invention. is there.

  In the second embodiment, a partition member is provided in a torque fluctuation absorbing device in which a bush 35 is interposed between a side plate 33 that is a constituent member of the first inertial body side member and a mass plate 34 that is a constituent member of the second inertial body side member. 39, 40, and 41 are applied.

  The side plate 33 is a disk-shaped (ring-shaped) plate disposed on the crankshaft (not shown) side, and is a constituent member of the first inertial body side member. The side plate 33 has a cylindrical portion 33a whose inner peripheral portion extends to the mass plate 34 side (right side in FIG. 2). The inner peripheral surface of the cylindrical portion 33a is in contact with the bush 35 so as to be slidable. A partition member 40 is integrally fixed to the outer peripheral surface near the tip of the cylindrical portion 33a. The side plate 33 is connected to a crankshaft (not shown) together with the auxiliary plate 36 by bolts 38.

  The mass plate 34 is a ring-shaped plate and is a constituent member of the second inertial body side member. The mass plate 34 has a cylindrical portion 34a extending on the side plate 33 side (left side in FIG. 2) on the inner peripheral portion. The outer peripheral surface of the cylindrical portion 34a is in contact with the bush 35 so as to be slidable. A partition member 39 is attached to the tip of the cylindrical portion 34a. The mass plate 34 has a hole 34 b that serves as an insertion port for the bolt 38.

  The bush 35 is a sliding bearing that supports a rotating portion between the cylindrical portion 33 a of the side plate 33 and the cylindrical portion 34 a of the mass plate 34. The bush 35 has a cylindrical shape between the cylindrical portion 33a and the cylindrical portion 34a, and is not disposed near the tip of the cylindrical portion 34a in order to mount the partition member 39.

  The auxiliary plate 36 is a ring-shaped plate and is a constituent member of the first inertial body side member. The auxiliary plate 36 is disposed on the outer periphery of the cylindrical portion 33 a of the side plate 33 and is connected to a crankshaft (not shown) together with the side plate 33 by bolts 38. The auxiliary plate 36 has a cylindrical portion 36a whose outer peripheral portion extends to the mass plate 34 side (right side in FIG. 2). A partition member 41 is fitted into the inner peripheral surface of the distal end portion of the cylindrical portion 36a. The distal end portion of the cylindrical portion 36a is engaged with the thrust member 37 so as not to rotate relative to the thrust member 37 and to be movable in the axial direction.

  The thrust member 37 is a ring-shaped member disposed between the cylindrical portion 36 a of the auxiliary plate 36 and the mass plate 34. The thrust member 37 is slidably in contact with the mass plate 34. The thrust member 37 is configured such that it cannot rotate relative to the cylindrical portion 36a of the auxiliary plate 36 and can move in the axial direction.

  The partition member 39 is a member that partitions the end surface of the bush 35 from the external space. The partition member 39 is attached to the tip of the cylindrical portion 34 a of the mass plate 34. The partition member 39 has an allowance for pressing against the side plate 33. Rubber, resin, or metal can be used for the partition member 39. The space on the end face side of the bush 35 partitioned by the partition member 39 can be partially filled with a lubricant (not shown). As the lubricant, viscous fluid (grease) or solid lubricant powder (polytetrafluoroethylene powder) can be used.

  The partition member 40 is a member that partitions the end face of the bush 35 from the external space. The partition member 40 is integrally fixed near the tip of the cylindrical portion 33 a of the side plate 33. The partition member 40 has a tightening allowance for pressing against the mass plate 34. The fastening allowance of the partition member 40 is preferably in contact with a portion of the mass plate 34 that is on the inner peripheral side of the hole 34b. Rubber, resin, or metal can be used for the partition member 40. The space on the end face side of the bush 35 partitioned by the partition member 40 can be partially filled with a lubricant (not shown). As the lubricant, viscous fluid (grease) or solid lubricant powder (polytetrafluoroethylene powder) can be used.

  The partition member 41 is a member that partitions the end surface of the bush 35 from the external space. The partition member 41 is formed by integrally molding a ring-shaped metal fitting 41a with resin. The partition member 41 is attached to the distal end portion of the cylindrical portion 36 a of the auxiliary plate 36. The partition member 41 has an allowance for pressing against the mass plate 34. The fastening margin of the partition member 41 is preferably in contact with a portion of the mass plate 34 that is on the outer peripheral side of the hole 34b.

  According to the second embodiment, the same effects as those of the first embodiment are obtained.

(Embodiment 3)
A torque fluctuation absorber according to Embodiment 3 of the present invention will be described with reference to the drawings. FIG. 3 is a partial cross-sectional view schematically showing a configuration in the vicinity of a rotating portion between a first inertial body side member and a second inertial body side member of a flywheel having a torque fluctuation absorber according to Embodiment 3 of the present invention. is there.

  In the third embodiment, a partition member is provided in a torque fluctuation absorber in which a bush 46 is interposed between a stator plate 43 that is a constituent member of the first inertial body side member and a mass plate 45 that is a constituent member of the second inertial body side member. 48, to which one side of the end face of the bush 46 is partitioned from the external space by the partition member 48, and the other side is separated from the internal space formed by the side plate 44 and the mass plate 45. Partitioned from external space.

  The stator plate 43 is a disk-shaped (ring-shaped) plate that is supported by the mass plate 45 so as to be relatively rotatable via a bushing 46, and is a constituent member of the first inertial body side member. The stator plate 43 is connected to a crankshaft (not shown) together with the side plate 44 by bolts 47 at the inner peripheral portion. The stator plate 43 has a cylindrical portion 43 a whose intermediate portion extends to the inner periphery of the mass plate 45. The stator plate 43 has a flange portion 43 b whose outer peripheral portion extends to the opposite side of the mass plate 45 to the side plate 44 side. The outer peripheral surface of the cylindrical portion 43a or the surface of the flange portion 43b on the mass plate 45 side is in contact with the bush 46 so as to be slidable. A partition member 48 is attached to the tip of the flange portion 43b.

  The side plate 44 is a disk-shaped (ring-shaped) plate disposed on the crankshaft (not shown) side, and is a constituent member of the first inertial body side member. The side plate 44 is connected to a crankshaft (not shown) together with the stator plate 43 by bolts 47 at an inner peripheral portion. The surface of the side plate 44 on the mass plate 45 side is in contact with the bush 46 so as to be slidable at a predetermined position.

  The mass plate 45 is a ring-shaped plate and is a constituent member of the second inertial body side member. The mass plate 45 has a bush 46 fixed to the inner peripheral end surface or a side surface in the vicinity thereof.

  The bush 46 is a sliding bearing that mainly supports a rotating portion between the cylindrical portion 43 a of the stator plate 43 and the inner peripheral end portion of the mass plate 45. The bush 46 has a cylindrical shape between the cylindrical portion 43a and the mass plate 45, and both sides of the cylindrical portion have a flange shape. One of the flange-shaped portions of the bush 46 is disposed between the flange portion 43 b of the stator plate 43 and the mass plate 45, and the other flange-shaped portion of the bush 46 is disposed between the side plate 44 and the mass plate 45.

  The partition member 48 is a member that partitions the end face of the bush 46 from the external space. The partition member 48 is attached to the distal end portion of the flange portion 43 b of the stator plate 43. The partition member 48 has a tightening allowance for pressing against the mass plate 45. Rubber, resin, or metal can be used for the partition member 48. The space on the end face side of the bush 46 partitioned by the partition member 48 can be partially filled with a lubricant (not shown). As the lubricant, viscous fluid (grease) or solid lubricant powder (polytetrafluoroethylene powder) can be used.

  Note that there is no partition member for partitioning the end face of the bush 46 in the space between the side plate 44 and the mass plate 45, but it must be configured to communicate with the external space like the hole 34b of the mass plate 34 in FIG. For example, only one side of the end face of the bush 46 needs to be partitioned.

  According to the third embodiment, the same effects as those of the first embodiment are obtained.

(Embodiment 4)
A torque fluctuation absorber according to Embodiment 4 of the present invention will be described with reference to the drawings. FIG. 4 is a partial cross-sectional view schematically showing a configuration in the vicinity of a rotating portion between a first inertial body side member and a second inertial body side member of a flywheel having a torque fluctuation absorber according to Embodiment 4 of the present invention. is there.

  In the fourth embodiment, a partition member is provided in a torque fluctuation absorbing device in which a bush 52 is interposed between a side plate 50 that is a constituent member of the first inertial body side member and a mass plate 51 that is a constituent member of the second inertial body side member. 54 and 55 are applied, and a partition member 54 in which resin (or rubber) and metal are combined is used.

  The side plate 50 is a disk-shaped (ring-shaped) plate disposed on the crankshaft (not shown) side, and is a constituent member of the first inertial body side member. The side plate 50 has a cylindrical portion 50a whose inner peripheral portion extends to the mass plate 51 side (the right side in FIG. 4). The outer peripheral surface of the cylindrical portion 50a or the inner peripheral surface portion of the plate is in contact with the bush 52 so as to be slidable. A partition member 54 is attached to the tip of the cylindrical portion 50a. The side plate 50 is connected to a crankshaft (not shown) by bolts 53.

  The mass plate 51 is a ring-shaped plate and is a constituent member of the second inertial body side member. The mass plate 51 is slidably in contact with the bush 52 on the inner peripheral end surface or the surface on the side plate 50 side. The mass plate 51 has a hole 51 a that serves as an insertion port for the bolt 53. In the mass plate 51, a partition member 55 is integrally fixed to a portion in the vicinity of the end portion of the bush 52 on the side plate 50 side.

  The bush 52 is a sliding bearing that supports a rotating portion between the side plate 50 and the mass plate 51. The bush 52 has a cylindrical shape between the cylindrical portion 50 a of the side plate 50 and the inner peripheral end surface of the mass plate 51, and has a flange shape between both side walls of the side plate 50 and the mass plate 51.

  The partition member 54 is a member that partitions the end face of the bush 52 from the external space. The partition member 54 is attached to the distal end portion of the cylindrical portion 50 a of the side plate 50. The partition member 54 is configured such that a portion of the side plate 50 attached to the cylindrical portion 50a is made of a resin 54a. A metal 54b is integrally formed. The metal 54 b extends to the outer periphery, and the tip portion thereof is in contact with the side wall surface of the mass plate 51. The space on the end face side of the bush 52 partitioned by the partition member 54 can be partially filled with a lubricant (not shown). As the lubricant, viscous fluid (grease) or solid lubricant powder (polytetrafluoroethylene powder) can be used.

  The partition member 55 is a member that partitions the end face of the bush 52 from the external space. The partition member 55 is integrally fixed to a portion in the vicinity of the end portion of the bush 52 on the side plate 50 side of the mass plate 51. The partition member 55 has an allowance for pressing against the side plate 50. Rubber, resin, or metal can be used for the partition member 55. The space on the end face side of the bush 52 partitioned by the partition member 55 can be partially filled with a lubricant (not shown). As the lubricant, viscous fluid (grease) or solid lubricant powder (polytetrafluoroethylene powder) can be used.

  According to the fourth embodiment, the same effects as those of the first embodiment are obtained.

(Embodiment 5)
A torque fluctuation absorber according to Embodiment 5 of the present invention will be described with reference to the drawings. FIG. 5 is a partial cross-sectional view schematically showing a configuration in the vicinity of a rotating portion between a first inertial body side member and a second inertial body side member of a flywheel having a torque fluctuation absorber according to Embodiment 5 of the present invention. is there.

  In the fifth embodiment, a mass plate in a torque fluctuation absorber in which a bush 59 is interposed between a side plate 57 that is a constituent member of the first inertial body side member and a mass plate 58 that is a constituent member of the second inertial body side member. The partition members 61 and 62 are integrally fixed only to 58.

  The side plate 57 is a disk-shaped (ring-shaped) plate disposed on the crankshaft (not shown) side, and is a constituent member of the first inertial body side member. The side plate 57 has a cylindrical portion 57a whose inner peripheral portion extends to the mass plate 58 side (right side in FIG. 5). The outer peripheral surface of the cylindrical portion 57a or the inner peripheral portion of the plate is in contact with the bush 59 so as to be slidable. The side plate 57 is connected to a crankshaft (not shown) by bolts 60.

  The mass plate 58 is a ring-shaped plate and is a constituent member of the second inertial body side member. The mass plate 58 is slidably in contact with the bush 59 on the inner peripheral end surface or the surface on the side plate 57 side. The mass plate 58 has a hole 58 a that serves as an insertion port for the bolt 60. In the mass plate 58, a partition member 61 is integrally fixed to a portion in the vicinity of the end portion of the bush 59 in the axial direction. In the mass plate 58, a partition member 62 is integrally fixed to a portion in the vicinity of the end portion of the bush 59 on the side plate 57 side.

  The bush 59 is a sliding bearing that supports a rotating portion between the side plate 57 and the mass plate 58. The bush 59 has a cylindrical shape between the cylindrical portion 57 a of the side plate 57 and the inner peripheral end surface of the mass plate 58, and has a flange shape between both side walls of the side plate 57 and the mass plate 58.

  The partition member 61 is a member that partitions the end surface of the bush 59 from the external space. The partition member 61 is integrally fixed to a portion of the mass plate 58 near the tip of the cylindrical portion 57 a of the side plate 57. The partition member 61 has a tightening allowance for pressing against the tip of the cylindrical portion 57 a of the side plate 57. Rubber, resin, or metal can be used for the partition member 61. The space on the end face side of the bush 59 partitioned by the partition member 61 can be partially filled with a lubricant (not shown). As the lubricant, viscous fluid (grease) or solid lubricant powder (polytetrafluoroethylene powder) can be used.

  The partition member 62 is a member that partitions the end surface of the bush 59 from the external space. The partition member 62 is integrally fixed to a portion in the vicinity of the end portion of the bush 59 on the side plate 57 side of the mass plate 58. The partition member 62 has an allowance for pressing against the side plate 57. Rubber, resin, or metal can be used for the partition member 62. The space on the end face side of the bush 59 partitioned by the partition member 62 can be partially filled with a lubricant (not shown). As the lubricant, viscous fluid (grease) or solid lubricant powder (polytetrafluoroethylene powder) can be used.

  According to the fifth embodiment, the same effects as those of the first embodiment are obtained.

(Embodiment 6)
A torque fluctuation absorber according to Embodiment 6 of the present invention will be described with reference to the drawings. FIG. 6 is a partial cross-sectional view schematically showing a configuration in the vicinity of a rotating portion between a first inertial body side member and a second inertial body side member of a flywheel having a torque fluctuation absorber according to Embodiment 6 of the present invention. is there.

  In the sixth embodiment, a partition member is provided in a torque fluctuation absorbing device in which a bush 66 is interposed between a side plate 64 that is a constituent member of the first inertial body side member and a mass plate 65 that is a constituent member of the second inertial body side member. 68 and 69, and concave portions 64b and 65c are formed on the plates 64 and 65 in the vicinity of the tip portions of the partition members 68 and 69, respectively.

  The side plate 64 is a disk-shaped (ring-shaped) plate disposed on the crankshaft (not shown) side, and is a constituent member of the first inertial body side member. The side plate 64 has a cylindrical portion 64a whose inner peripheral portion extends to the mass plate 65 side. The outer peripheral surface of the cylindrical portion 64a or the inner peripheral side surface of the plate is slidably in contact with the bush 66. A partition member 68 is attached to the inner peripheral portion of the cylindrical portion 64a from the distal end side of the cylindrical portion 64a. The side plate 64 has a recess 64 b into which the tip of the partition member 69 is inserted. The side plate 64 is connected to a crankshaft (not shown) by bolts 67.

  The mass plate 65 is a ring-shaped plate and is a constituent member of the second inertial body side member. The mass plate 65 has a hole 65 a that serves as an insertion port for the bolt 67. The mass plate 65 has a cylindrical portion 65b extending toward the side plate 64 on the inner peripheral portion. The mass plate 65 is slidably in contact with the bush 66 on the inner peripheral end surface or the front end surface of the cylindrical portion 65b. A partition member 69 is mounted on the outer peripheral surface of the cylindrical portion 65b. The mass plate 65 has a recess 65 c into which the outer end of the partition member 69 is inserted.

  The bush 66 is a sliding bearing that supports a rotating portion between the side plate 64 and the mass plate 65. The bush 66 has a cylindrical shape between the cylindrical portion 64a of the side plate 64 and the inner peripheral end surface of the mass plate 65, and has a flange shape between the side plate 64 and the tip of the cylindrical portion 65b of the mass plate 65. ing.

  The partition member 68 is a member that partitions the end surface of the bush 66 from the external space. The partition member 68 is attached to the distal end portion of the cylindrical portion 64a of the side plate 64, extends from the vicinity of the distal end portion of the cylindrical portion 64a to the outer periphery, and the distal end portion extends into the recess 65c of the mass plate 65. . The distal end of the partition member 68 may be disposed with a distance of 1 mm or less (preferably 0 mm) with respect to the recess 65c of the mass plate 65. The space on the end face side of the bush 66 partitioned by the partition member 68 can be partially filled with a lubricant (not shown). A viscous fluid (grease) can be used as the lubricant.

  The partition member 69 is a member that partitions the end surface of the bush 66 from the external space. The partition member 69 is attached to the outer periphery of the cylindrical portion 65 b of the mass plate 65 and extends into the concave portion 64 b of the side plate 64. The distal end of the partition member 69 may be disposed with a distance of 1 mm or less (preferably 0 mm) with respect to the recess 64b of the side plate 64. The space on the end face side of the bush 66 partitioned by the partition member 69 can be partially filled with a lubricant (not shown). A viscous fluid (grease) can be used as the lubricant.

  According to the sixth embodiment, the same effects as in the first embodiment are obtained.

(Embodiment 7)
A torque fluctuation absorber according to Embodiment 7 of the present invention will be described with reference to the drawings. FIG. 7 is a partial cross-sectional view schematically showing a configuration in the vicinity of a rotating portion between a first inertial body side member and a second inertial body side member of a flywheel having a torque fluctuation absorber according to Embodiment 7 of the present invention. is there.

  In the seventh embodiment, the partition member is provided in the torque fluctuation absorbing device in which the bush 73 is interposed between the side plate 71 which is a constituent member of the first inertial body side member and the mass plate 72 which is the constituent member of the second inertial body side member. 75, 76 are applied, and stepped portions 72b, 72c are formed on the mass plate 72 in the vicinity of the tip portions of the partition members 75, 76.

  The side plate 71 is a disk-shaped (ring-shaped) plate disposed on the crankshaft (not shown) side, and is a constituent member of the first inertial body side member. The side plate 71 has a cylindrical portion 71a whose inner peripheral portion extends to the mass plate 72 side. The outer peripheral surface of the cylindrical portion 71a or the inner peripheral portion of the plate is in contact with the bush 73 so as to be slidable. A partition member 75 is attached to the inner peripheral portion of the cylindrical portion 71a from the distal end side of the cylindrical portion 71a. In the side plate 71, a partition member 76 is integrally fixed by a rivet 74 on the outer peripheral side of the cylindrical portion 72 a of the mass plate 72 and on the surface on the mass plate 72 side.

  The mass plate 72 is a ring-shaped plate and is a constituent member of the second inertial body side member. The mass plate 72 has a cylindrical portion 72a extending toward the side plate 71 on the inner peripheral portion. The mass plate 72 is slidably in contact with the bush 73 on the inner peripheral end surface or the front end surface of the cylindrical portion 72a. On the surface opposite to the side plate 71 side of the mass plate 72, there is a stepped portion 72 b that accommodates the tip of the partition member 75. On the outer peripheral surface of the cylindrical portion 72a, there is a stepped portion 72c that accommodates the tip of the partition member 76.

  The bush 73 is a sliding bearing that supports a rotating portion between the side plate 71 and the mass plate 72. The bush 73 is cylindrical between the cylindrical portion 71a of the side plate 71 and the inner peripheral end surface of the mass plate 72, and is flanged between the side plate 71 and the tip of the cylindrical portion 72a of the mass plate 72. ing.

  The partition member 75 is a member that partitions the end surface of the bush 73 from the external space. The partition member 75 is attached to the tip of the cylindrical portion 71a of the side plate 71, and extends from the vicinity of the tip of the cylindrical portion 71a to the stepped portion 72b of the mass plate 72. The tip end of the partition member 75 may be arranged with an interval of 1 mm or less (preferably 0 mm) with respect to the stepped portion 72 b of the mass plate 72. The space on the end face side of the bush 73 partitioned by the partition member 75 can be partially filled with a lubricant (not shown). A viscous fluid (grease) can be used as the lubricant.

  The partition member 76 is a member that partitions the end surface of the bush 73 from the external space. The partition member 76 is attached to the surface of the side plate 71 on the side of the mass plate 72 with a rivet 74, and the tip end portion extends to the stepped portion 72 c of the mass plate 72. The distal end portion of the partition member 76 may be disposed with an interval of 1 mm or less (preferably 0 mm) with respect to the stepped portion 72c of the mass plate 72. The space on the end face side of the bush 73 partitioned by the partition member 76 can be partially filled with a lubricant (not shown). A viscous fluid (grease) can be used as the lubricant.

  According to the seventh embodiment, the same effect as in the first embodiment is obtained.

(Embodiment 8)
A torque fluctuation absorber according to Embodiment 8 of the present invention will be described with reference to the drawings. FIG. 8 is a partial cross-sectional view schematically showing a configuration in the vicinity of a rotating portion between a first inertial body side member and a second inertial body side member of a flywheel having a torque fluctuation absorber according to Embodiment 8 of the present invention. is there.

  In the eighth embodiment, a partition member is provided in a torque fluctuation absorbing device in which a bush 80 is interposed between a side plate 78 that is a constituent member of the first inertial body side member and a mass plate 79 that is a constituent member of the second inertial body side member. 83 and 84 are applied, and the partition member 83 is configured by a combination of a thrust member 83a, a disc spring 83b, and a C ring 83c.

  The side plate 78 is a disk-shaped (ring-shaped) plate disposed on the crankshaft (not shown) side, and is a constituent member of the first inertial body side member. The side plate 78 has a cylindrical portion 78a whose inner peripheral portion extends to the mass plate 79 side. The outer peripheral surface of the cylindrical portion 78a is in contact with the bush 80 so as to be slidable. The distal end portion of the cylindrical portion 78a extends to the right in the axial direction (the right side in FIG. 8) from the mass plate 79, and has a rotation preventing portion 78b and a recessed portion 78c on the outer peripheral surface of the distal end portion. The anti-rotation portion 78b is formed at a tip portion of the cylindrical portion 78a closer to the mass plate 79 than the concave portion 78c, and cannot rotate relative to the thrust member 83a, which is a constituent member of the partition member 83, and can move in the axial direction. It is configured. The concave portion 78c is formed at a position closer to the distal end side of the cylindrical portion 78a than the rotation preventing portion 78b, and a C ring 83c serving as a constituent member of the partition member 83 is attached from the outer peripheral side thereof. A disc spring 83b serving as a constituent member of the partition member 83 is disposed on the outer periphery of a portion between the rotation preventing portion 78b and the concave portion 78c at the tip of the cylindrical portion 78a. The side plate 78 is slidably in contact with the thrust member 82 on the side wall surface in the vicinity of the cylindrical portion 78a. The side plate 78 is connected to a crankshaft (not shown) together with the partition member 84 by bolts 81.

  The mass plate 79 is a ring-shaped plate and is a constituent member of the second inertial body side member. The mass plate 79 has a hole 79 a that serves as an insertion port for the bolt 81. The mass plate 79 has a cylindrical portion 79b extending on the side plate 78 side on the inner peripheral portion. The mass plate 79 is slidably in contact with the bush 80 on the inner peripheral end surface. The tip end surface of the cylindrical portion 79b is slidably in contact with the thrust member 82.

  The bush 80 is a sliding bearing that supports a rotating portion between the side plate 78 and the mass plate 79. The bush 80 is cylindrical between the cylindrical portion 78 a of the side plate 78 and the inner peripheral end surface of the mass plate 79.

  The thrust member 82 is a ring-shaped member disposed between the side plate 78 and the tip surface of the cylindrical portion 79b of the mass plate 79. The thrust member 82 is slidably in contact with the side plate 78 and the tip surface of the cylindrical portion 79b of the mass plate 79.

  The partition member 83 is a member that partitions the end surface of the bush 80 from the external space. The partition member 83 is configured by a combination of a thrust member 83a, a disc spring 83b, and a C ring 83c. The thrust member 83a is arranged on the outer periphery of the tip end portion of the cylindrical portion 78a of the side plate 78, and is configured to be relatively unrotatable and axially movable with respect to the rotation preventing portion 78b of the side plate 78. The thrust member 83a is urged toward the mass plate 79 by a disc spring 83b, and is in slidable contact with the mass plate 79. The disc spring 83b is disposed on the outer periphery of the portion between the rotation preventing portion 78b and the concave portion 78c at the tip of the cylindrical portion 78a, and one end is in contact with the thrust member 83a and the other end is in contact with the C ring 83c. The C ring 83 c is disposed on the outer periphery of the tip end portion of the cylindrical portion 78 a of the side plate 78 and is mounted on the outer peripheral side of the concave portion 78 c of the side plate 78. The space on the end face side of the bush 80 partitioned by the partition member 83 can be partially filled with a lubricant (not shown). A viscous fluid (grease) can be used as the lubricant.

  The partition member 84 is a member that partitions the end surface of the bush 80 from the external space. The partition member 84 is attached to the surface of the side plate 78 on the side of the mass plate 79 with bolts 81, and the distal end portion extends to the outer periphery of the cylindrical portion 79 b of the mass plate 79. The distal end portion of the partition member 84 may be disposed with an interval of 1 mm or less (preferably 0 mm) with respect to the outer peripheral surface of the cylindrical portion 79b of the mass plate 79. The space on the end face side of the bush 80 partitioned by the partition member 84 can be partially filled with a lubricant (not shown). A viscous fluid (grease) can be used as the lubricant.

  According to the eighth embodiment, the same effects as those of the first embodiment are obtained.

(Embodiment 9)
A torque fluctuation absorber according to Embodiment 9 of the present invention will be described with reference to the drawings. FIG. 9 is a partial cross-sectional view schematically showing a configuration in the vicinity of a rotating portion between a first inertial body side member and a second inertial body side member of a flywheel having a torque fluctuation absorber according to Embodiment 9 of the present invention. is there.

  In the ninth embodiment, a partition member is provided in a torque fluctuation absorbing device in which a bush 88 is interposed between a side plate 86 that is a constituent member of the first inertial body side member and a mass plate 87 that is a constituent member of the second inertial body side member. 90, 91 is applied, and the partition member 90 is an O-ring, and the partition member 91 is configured by a combination of a plate 91a and an O-ring 91b.

  The side plate 86 is a disk-shaped (ring-shaped) plate disposed on the crankshaft (not shown) side, and is a constituent member of the first inertial body side member. The side plate 86 has a cylindrical portion 86a whose inner peripheral portion extends to the mass plate 87 side. The outer peripheral surface of the cylindrical portion 86a or the inner peripheral portion of the plate is in contact with the bush 88 so as to be slidable. A concave portion 86b for mounting the partition member 90 is provided on the outer peripheral surface in the vicinity of the tip of the cylindrical portion 86a. The side plate 86 is connected to a crankshaft (not shown) together with the plate 91a by bolts 89.

  The mass plate 87 is a ring-shaped plate and is a constituent member of the second inertial body side member. The mass plate 87 has a hole 87 a that serves as an insertion port for the bolt 89. The mass plate 87 has a cylindrical portion 87b extending on the side plate 86 side on the inner peripheral portion. The mass plate 87 is slidably in contact with the bush 88 on the inner peripheral end surface or the front end surface of the cylindrical portion 87b. On the outer peripheral surface of the cylindrical portion 87b, a concave portion 87c for mounting an O-ring 91b serving as a constituent member of the partition member 91 is formed.

  The bush 88 is a sliding bearing that supports a rotating portion between the side plate 86 and the mass plate 87. The bush 88 has a cylindrical shape between the cylindrical portion 86a of the side plate 86 and the inner peripheral end surface of the mass plate 87, and has a flange shape between the side plate 86 and the tip of the cylindrical portion 87b of the mass plate 87. ing.

  The partition member 90 is an O-ring that partitions the end surface of the bush 88 from the external space. The partition member 90 is mounted in the concave portion 86b of the side plate 86, and seals a gap between the inner peripheral end surface of the mass plate 87 and the outer peripheral surface of the cylindrical portion 86a of the side plate 86. The space on the end face side of the bush 88 partitioned by the partition member 90 can be partially filled with a lubricant (not shown). A viscous fluid (grease) can be used as the lubricant.

  The partition member 91 is a member that partitions the end surface of the bush 88 from the external space. The partition member 91 is configured by a combination of a plate 91a and an O-ring 91b. The plate 91 a is attached to the surface of the side plate 86 on the side of the mass plate 87 with bolts 89, and the tip portion extends to the outer periphery of the cylindrical portion 87 b of the mass plate 87. The front end of the plate 91a is disposed at a predetermined interval with respect to the outer peripheral surface of the cylindrical portion 87b of the mass plate 87. The O-ring 91b is attached to the recess 87c of the mass plate 87, and seals the gap between the tip of the plate 91a and the outer peripheral surface of the cylindrical portion 87b of the mass plate 87. The space on the end face side of the bush 88 partitioned by the partition member 91 can be partially filled with a lubricant (not shown). A viscous fluid (grease) can be used as the lubricant.

  According to the ninth embodiment, the same effect as in the first embodiment is obtained.

(Embodiment 10)
A torque fluctuation absorber according to Embodiment 10 of the present invention will be described with reference to the drawings. FIG. 10 is a partial cross-sectional view schematically showing a configuration in the vicinity of a rotating portion between a first inertial body side member and a second inertial body side member of a flywheel having a torque fluctuation absorber according to Embodiment 10 of the present invention. is there.

  In the tenth embodiment, a partition member is provided in a torque fluctuation absorber in which a bush 95 is interposed between a side plate 93 that is a constituent member of the first inertial body side member and a mass plate 94 that is a constituent member of the second inertial body side member. 97, 98 is applied, and the partition member 97 is an O-ring, and the partition member 98 is configured by a combination of rubber 98a, disc spring 98b, and rubber 98c.

  The side plate 93 is a disk-shaped (ring-shaped) plate disposed on the crankshaft (not shown) side, and is a constituent member of the first inertial body side member. The side plate 93 has a cylindrical portion 93a whose inner peripheral portion extends to the mass plate 94 side. The outer peripheral surface of the cylindrical portion 93a or the inner peripheral portion of the plate is in contact with the bush 95 so as to be slidable. A concave portion 93b for mounting the partition member 97 is provided on the outer peripheral surface in the vicinity of the tip of the cylindrical portion 93a. The side plate 93 is connected to a crankshaft (not shown) by bolts 96.

  The mass plate 94 is a ring-shaped plate and is a constituent member of the second inertial body side member. The mass plate 94 has a hole 94 a that serves as an insertion port for the bolt 96. The mass plate 94 has a cylindrical portion 94b extending on the side plate 93 side at the inner peripheral portion. The mass plate 94 is slidably in contact with the bush 95 on the inner peripheral end surface or the front end surface of the cylindrical portion 94b. On the outer peripheral surface of the cylindrical portion 94b, a step portion 94c for supporting a rubber 98c that is a constituent member of the partition member 98 is formed.

  The bush 95 is a sliding bearing that supports a rotating portion between the side plate 93 and the mass plate 94. The bush 95 has a cylindrical shape between the cylindrical portion 93a of the side plate 93 and the inner peripheral end surface of the mass plate 94, and has a flange shape between the side plate 93 and the tip of the cylindrical portion 94b of the mass plate 94. ing.

  The partition member 97 is an O-ring that partitions the end surface of the bush 95 from the external space. The partition member 97 is attached to the concave portion 93 b of the side plate 93 and seals a gap between the inner peripheral end surface of the mass plate 94 and the outer peripheral surface of the cylindrical portion 93 a of the side plate 93. The space on the end face side of the bush 95 partitioned by the partition member 97 can be partially filled with a lubricant (not shown). A viscous fluid (grease) can be used as the lubricant.

  The partition member 98 is a member that partitions the end surface of the bush 95 from the external space. The partition member 98 is configured by a combination of rubber 98a, disc spring 98b, and rubber 98c. The rubber 98a is integrally formed at one end of the disc spring 98b, and seals between one end of the disc spring 98b and the side plate 93. The disc spring 98b is disposed between the side plate 93 and the step portion 94c of the mass plate 94, and rubber 98a and rubber 98c are integrally formed at both ends. The rubber 98c is integrally formed with the other end of the disc spring 98b, and seals between the other end of the disc spring 98b and the step portion 94c of the mass plate 94. The space on the end face side of the bush 95 partitioned by the partition member 98 can be partially filled with a lubricant (not shown). A viscous fluid (grease) can be used as the lubricant.

  According to the tenth embodiment, there are the same effects as the first embodiment.

(Embodiment 11)
A torque fluctuation absorber according to Embodiment 11 of the present invention will be described with reference to the drawings. FIG. 11: is the fragmentary sectional view which showed typically the structure of the rotation part vicinity between the 1st inertial body side member and the 2nd inertial body side member of the flywheel which has a torque fluctuation absorber which concerns on Embodiment 11 of this invention. is there.

  In the eleventh embodiment, the partition member is provided in the torque fluctuation absorbing device in which the bush 102 is interposed between the side plate 100 that is a constituent member of the first inertial body side member and the mass plate 101 that is the constituent member of the second inertial body side member. 106 and 107 are applied, and in order to make it difficult for foreign matter to collect in the gap between the side plate 100 and the mass plate 101 on the outer space side of the partition member 106, the air flow in the outer space is separated from the bush 102. A tapered surface 100 b is formed on the plate 100.

  The side plate 100 is a disk-shaped (ring-shaped) plate disposed on the crankshaft (not shown) side, and is a constituent member of the first inertial body side member. The side plate 100 has a cylindrical portion 100a whose inner peripheral portion extends to the mass plate 101 side. The outer peripheral surface of the cylindrical portion 100a is in contact with the bush 102 so as to be slidable. A tapered surface 100b is formed at the tip of the cylindrical portion 100a. The tapered surface 100b is formed so that the airflow (see the dotted line in FIG. 11) generated by the rotation of the flywheel accompanying the rotation of the engine is smoothly separated from the bush 102. The side plate 100 is connected to a crankshaft (not shown) together with the auxiliary plate 103 by bolts 105.

  The mass plate 101 is a ring-shaped plate and is a constituent member of the second inertial body side member. The mass plate 101 has a hole portion 101 a that serves as an insertion port for the bolt 105. The mass plate 101 has a cylindrical portion 101b that extends toward the side plate 100 on the inner peripheral portion. The inner peripheral surface of the cylindrical portion 101b is in contact with the bush 102 so as to be slidable. A partition member 107 is integrally fixed to the tip portion of the cylindrical portion 101b.

  The bush 102 is a sliding bearing that supports a rotating portion between the cylindrical portion 100 a of the side plate 100 and the cylindrical portion 101 b of the mass plate 101. The bush 102 is cylindrical between the cylindrical portion 100a and the cylindrical portion 101b.

  The auxiliary plate 103 is a ring-shaped plate and is a constituent member of the first inertial body side member. The auxiliary plate 103 is disposed on the outer periphery of the cylindrical portion 100 a of the side plate 100, and is connected to a crankshaft (not shown) together with the side plate 100 by a bolt 105. The auxiliary plate 103 has a cylindrical portion 103a whose outer peripheral portion extends to the mass plate 101 side. The distal end portion of the cylindrical portion 103a is engaged with the thrust member 104 so as not to rotate relative to the thrust member 104 and to move in the axial direction.

  The thrust member 104 is a ring-shaped member disposed between the cylindrical portion 103 a of the auxiliary plate 103 and the mass plate 101. The thrust member 104 is slidably in contact with the mass plate 101. The thrust member 104 is configured such that it cannot rotate relative to the cylindrical portion 103 a of the auxiliary plate 103 and can move in the axial direction.

  The partition member 106 is a member that partitions the end face of the bush 102 from the external space. The partition member 106 is integrally fixed to the distal end portion of the cylindrical portion 101 b of the mass plate 101. The partition member 106 is pressed against the outer peripheral surface of the cylindrical portion 100 a of the side plate 100. Rubber or resin can be used for the partition member 106. The space on the end face side of the bush 102 partitioned by the partition member 106 can be partially filled with a lubricant (not shown). A viscous fluid (grease) can be used as the lubricant.

  The partition member 107 is a member that partitions the end surface of the bush 102 from the external space. The partition member 107 is integrally fixed to a portion of the mass plate 101 near the tip of the cylindrical portion 100a of the side plate 100. The partition member 107 is pressed against the auxiliary plate 103. Rubber or resin can be used for the partition member 107. The space on the end face side of the bush 102 partitioned by the partition member 107 can be partially filled with a lubricant (not shown). A viscous fluid (grease) can be used as the lubricant.

  According to the eleventh embodiment, the same effects as those of the first embodiment can be obtained, and the retention of foreign matters in the vicinity of the partition member 106 can be suppressed or prevented.

Embodiment 12
A torque fluctuation absorber according to Embodiment 12 of the present invention will be described with reference to the drawings. FIG. 12 is a partial cross-sectional view schematically showing a configuration in the vicinity of a rotating portion between a first inertial body side member and a second inertial body side member of a flywheel having a torque fluctuation absorber according to Embodiment 12 of the present invention. is there.

  In the twelfth embodiment, the partition member is provided in the torque fluctuation absorbing device in which the bush 111 is interposed between the side plate 109 that is a constituent member of the first inertial body side member and the mass plate 110 that is the constituent member of the second inertial body side member. 113 is applied, and the partition member in the part where the foreign matter is difficult to collect due to the airflow in the external space with respect to the rotation of the flywheel accompanying the rotation of the engine is eliminated, and the airflow in the external space is kept away from the bush 111 (the foreign matter is collected The taper surface 110b is formed on the mass plate 110.

  The side plate 109 is a disk-shaped (ring-shaped) plate disposed on the crankshaft (not shown) side, and is a constituent member of the first inertial body side member. The side plate 109 has a cylindrical portion 109a whose inner peripheral portion extends to the mass plate 110 side. The outer peripheral surface of the cylindrical portion 109a or the inner peripheral portion of the plate is in contact with the bush 111 so as to be slidable. Side plate 109 is connected to a crankshaft (not shown) by bolts 112.

  The mass plate 110 is a ring-shaped plate and is a constituent member of the second inertial body side member. The mass plate 110 is slidably in contact with the bush 111 on the inner peripheral end surface or the surface on the side plate 109 side. The mass plate 110 has a hole 110 a that serves as an insertion port for the bolt 112. In the mass plate 110, a partition member 113 is integrally fixed to a portion near the end of the bush 111 on the side plate 109 side. The mass plate 110 has a tapered surface 110 b formed at a portion near the tip of the cylindrical portion 109 a of the side plate 109. The tapered surface 110b is formed so that the airflow (see the dotted line in FIG. 12) generated by the rotation of the flywheel accompanying the rotation of the engine is smoothly separated from the bush 111.

  The bush 111 is a sliding bearing that supports a rotating portion between the side plate 109 and the mass plate 110. The bush 111 has a cylindrical shape between the cylindrical portion 109 a of the side plate 109 and the inner peripheral end surface of the mass plate 110, and has a flange shape between both side walls of the side plate 109 and the mass plate 110.

  The partition member 113 is a member that partitions the end surface of the bush 111 from the external space. The partition member 113 is integrally fixed to a portion near the end of the bush 111 on the side plate 109 side of the mass plate 110. The partition member 113 has an allowance for pressing against the side plate 109. Rubber, resin, or metal can be used for the partition member 113. The space on the end face side of the bush 111 partitioned by the partition member 113 can be partially filled with a lubricant (not shown). A viscous fluid (grease) can be used as the lubricant.

  According to the twelfth embodiment, the same effects as those of the first embodiment can be obtained, and the retention of foreign matters in the vicinity of the partition member 113 can be suppressed or prevented.

(Embodiment 13)
A torque fluctuation absorber according to Embodiment 13 of the present invention will be described with reference to the drawings. FIG. 13: is the fragmentary sectional view which showed typically the structure of the rotation part vicinity between the 1st inertial body side member and the 2nd inertial body side member of the flywheel which has a torque fluctuation absorber which concerns on Embodiment 13 of this invention. is there.

  In the thirteenth embodiment, in a torque fluctuation absorber in which a bush 117 is interposed between a side plate 115 serving as a constituent member of the first inertial body side member and a mass plate 116 serving as a constituent member of the second inertial body side member, A partition 116 c is formed on the plate 116.

  The side plate 115 is a disk-shaped (ring-shaped) plate disposed on the crankshaft (not shown) side, and is a constituent member of the first inertial body side member. The side plate 115 has a cylindrical portion 115a whose inner peripheral portion extends to the mass plate 116 side. The inner peripheral surface of the cylindrical portion 115a is in contact with the bush 117 so as to be slidable. The side plate 115 is connected to a crankshaft (not shown) together with the auxiliary plate 118 by bolts 120.

  The mass plate 116 is a ring-shaped plate and is a constituent member of the second inertial body side member. The mass plate 116 has a hole 116 a that serves as an insertion port for the bolt 120. The mass plate 116 has a cylindrical portion 116b extending toward the side plate 115 on the inner peripheral portion. The outer peripheral surface of the cylindrical portion 116b is in contact with the bush 117 so as to be slidable. The distal end portion of the cylindrical portion 116 b has a partition portion 116 c that is bent toward the cylindrical portion 115 a of the side plate 115. The partition part 116 c can be formed by press working with the punch 121. The leading end of the partition 116c may be disposed with a spacing of 1 mm or less (preferably 0 mm) with respect to the cylindrical portion 115a of the side plate 115. The space on the end face side of the bush 117 partitioned by the partitioning part 116c can be partially filled with a lubricant (not shown). A viscous fluid (grease) can be used as the lubricant.

  The auxiliary plate 118 is a ring-shaped plate and is a constituent member of the first inertial body side member. The auxiliary plate 118 is disposed on the outer periphery of the cylindrical portion 115 a of the side plate 115, and is connected to the crankshaft (not shown) together with the side plate 115 by the bolt 120. The auxiliary plate 118 has a cylindrical portion 118a whose outer peripheral portion extends to the mass plate 116 side. The distal end portion of the cylindrical portion 118a is engaged with the thrust member 119 so as not to be relatively rotatable and axially movable.

  The thrust member 119 is a ring-shaped member disposed between the cylindrical portion 118 a of the auxiliary plate 118 and the mass plate 116. The thrust member 119 is slidably in contact with the mass plate 116. The thrust member 119 is configured such that it cannot rotate relative to the cylindrical portion 118a of the auxiliary plate 118 and can move in the axial direction.

  According to the thirteenth embodiment, the same effects as those of the first embodiment can be obtained, and the partition 116 c can be formed by a simple process using the punch 121.

It is sectional drawing which showed typically the structure of the flywheel which has a torque fluctuation absorber which concerns on Embodiment 1 of this invention. It is the fragmentary sectional view which showed typically the structure of the rotation part vicinity between the 1st inertial body side member and the 2nd inertial body side member of the flywheel which has a torque fluctuation absorber which concerns on Embodiment 2 of this invention. It is the fragmentary sectional view which showed typically the structure of the rotation part vicinity between the 1st inertial body side member and the 2nd inertial body side member of the flywheel which has a torque fluctuation absorber which concerns on Embodiment 3 of this invention. It is the fragmentary sectional view which showed typically the structure of the rotation part vicinity between the 1st inertial body side member and the 2nd inertial body side member of the flywheel which has a torque fluctuation absorber which concerns on Embodiment 4 of this invention. It is the fragmentary sectional view which showed typically the structure of the rotation part vicinity between the 1st inertial body side member and the 2nd inertial body side member of the flywheel which has a torque fluctuation absorber which concerns on Embodiment 5 of this invention. It is the fragmentary sectional view which showed typically the structure of the rotation part vicinity between the 1st inertial body side member and the 2nd inertial body side member of a flywheel which has a torque fluctuation absorber which concerns on Embodiment 6 of this invention. It is the fragmentary sectional view which showed typically the structure of the rotation part vicinity between the 1st inertial body side member and the 2nd inertial body side member of the flywheel which has a torque fluctuation absorber which concerns on Embodiment 7 of this invention. It is the fragmentary sectional view which showed typically the structure of the rotation part vicinity between the 1st inertial body side member and the 2nd inertial body side member of the flywheel which has a torque fluctuation absorber which concerns on Embodiment 8 of this invention. It is the fragmentary sectional view which showed typically the structure of the rotation part vicinity between the 1st inertial body side member and the 2nd inertial body side member of a flywheel which has a torque fluctuation absorber which concerns on Embodiment 9 of this invention. It is the fragmentary sectional view which showed typically the structure of the rotation part vicinity between the 1st inertial body side member and the 2nd inertial body side member of the flywheel which has a torque fluctuation absorber which concerns on Embodiment 10 of this invention. It is the fragmentary sectional view which showed typically the structure of the rotation part vicinity between the 1st inertial body side member and the 2nd inertial body side member of the flywheel which has a torque fluctuation absorber which concerns on Embodiment 11 of this invention. It is the fragmentary sectional view which showed typically the structure of the rotation part vicinity between the 1st inertial body side member and the 2nd inertial body side member of the flywheel which has a torque fluctuation absorber which concerns on Embodiment 12 of this invention. It is the fragmentary sectional view which showed typically the structure of the rotation part vicinity between the 1st inertial body side member and the 2nd inertial body side member of the flywheel which has a torque fluctuation absorber which concerns on Embodiment 13 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Flywheel 2 1st inertia body side member 3 2nd inertia body side member 4 Damper part 6 Bolt 11 Stator plate (1st inertia body side member)
11a Cylindrical part 12 Drive plate 12a Convex part 13 Side plate 14 Startering gear 15 Belleville spring 16 Fastener (caulking part)
17 Spring seat 18 Coil spring 19 First driven plate 19a Protruding portion 19b Stopper portion 20 Second driven plate 21 Rivet 26 Rivet 27 Mass plate (second inertial body side member)
27b Cylindrical portion 28 Thrust member 28a Non-rotating portion (protrusion)
29 Bush (sliding bearing)
30, 31 Partition member 33 Side plate (first inertia body side member)
33a Cylindrical portion 34 Mass plate (second inertial body side member)
34a Cylindrical part 34b Hole part 35 Bush (sliding bearing)
36 Auxiliary plate 36a Cylindrical portion 37 Thrust member 38 Bolt 39, 40 Partition member 41 Partition member 41a Metal fitting 43 Stator plate (first inertia body side member)
43a Cylindrical portion 43b Flange portion 44 Side plate 45 Mass plate (second inertial body side member)
46 Bush (Sliding bearing)
47 bolt 48 partition member 50 side plate (first inertia body side member)
50a Cylindrical portion 51 Mass plate (second inertial body side member)
51a Hole 52 Bush (Sliding bearing)
53 Bolt 54, 55 Partition member 54a Resin 54b Metal 57 Side plate (first inertia body side member)
57a Cylindrical portion 58 Mass plate (second inertial body side member)
58a Hole 59 Bush (sliding bearing)
60 bolt 61, 62 partition member 64 side plate (first inertia body side member)
64a Cylindrical portion 64b Recessed portion 65 Mass plate (second inertial body side member)
65a Hole 65b Cylindrical part 65c Concave part 66 Bush (sliding bearing)
67 Bolt 68, 69 Partition member 71 Side plate (first inertia body side member)
71a Cylindrical portion 72 Mass plate (second inertial body side member)
72a Cylindrical portion 72b, 72c Stepped portion 73 Bush (sliding bearing)
74 Rivet 75, 76 Partition member 78 Side plate (first inertia body side member)
78a Cylindrical portion 78b Non-rotating portion 78c Recessed portion 79 Mass plate (second inertial body side member)
79a Hole 79b Cylindrical part 80 Bush (sliding bearing)
81 Bolt 82 Thrust member 83, 84 Partition member 83a Thrust member 83b Belleville spring 83c C-ring 86 Side plate (first inertia body side member)
86a Cylindrical portion 86b Recessed portion 87 Mass plate (second inertial body side member)
87a Hole 87b Cylindrical part 87c Concave part 88 Bush (sliding bearing)
89 Bolt 90, 91 Partition member 91a Plate 91b O-ring 93 Side plate (first inertia body side member)
93a Cylindrical portion 93b Recessed portion 94 Mass plate (second inertial body side member)
94a Hole 94b Cylindrical part 94c Stepped part 95 Bush (sliding bearing)
96 Bolt 97, 98 Partition member 98a Rubber 98b Belleville spring 98c Rubber 100 Side plate (first inertia body side member)
100a Cylindrical portion 100b Tapered surface 101 Mass plate (second inertial body side member)
101a Hole 101b Cylindrical part 102 Bush (sliding bearing)
103 Auxiliary plate 103a Cylindrical portion 104 Thrust member 105 Bolt 106, 107 Partition member 109 Side plate (first inertia body side member)
109a Cylindrical portion 110 Mass plate (second inertial body side member)
110a hole 110b taper surface 111 bush (sliding bearing)
112 Bolt 113 Partition member 115 Side plate (first inertia body side member)
115a cylindrical portion 116 mass plate (second inertial body side member)
116a Hole 116b Cylindrical part 116c Partition part 117 Bush (sliding bearing)
118 Auxiliary plate 118a Cylindrical portion 119 Thrust member 120 Bolt 121 Punch

Claims (7)

A rotatable first inertial body side member;
A second inertial body side member rotatable relative to the first inertial body side member;
A damper portion for attenuating vibration caused by relative rotation between the first inertial body side member and the second inertial body side member;
A sliding bearing disposed between the first inertial body side member and the second inertial body side member;
With
The first inertial body side member has a first cylindrical portion extending toward the second inertial body side member;
The second inertial body side member has a second cylindrical portion extending toward the first inertial body side member,
The sliding bearing is disposed between the first cylindrical portion and the second cylindrical portion,
The end surface of the sliding bearing is partitioned from the external space by the respective gaps between the first inertial body side member and the second cylindrical portion and between the second inertial body side member and the first cylindrical portion. Having a partition,
The torque fluctuation absorber according to claim 1, wherein the partition portion has a tightening margin in a rotation axis direction of the first inertial body side member and the second inertial body side member .   2. The torque fluctuation absorber according to claim 1, wherein the partition portion is a partition member integrally fixed to or attached to one or both of the first inertial body side member and the second inertial body side member. The torque fluctuation absorber according to claim 2 , wherein the partition member is made of an elastic material. 3. The torque fluctuation absorber according to claim 2 , wherein the partition member is configured by combining one or two of rubber, resin, and metal.   2. The torque fluctuation absorber according to claim 1, wherein the partition is a part of one or both of the first inertial body side member and the second inertial body side member.   The torque fluctuation absorbing device according to any one of claims 1 to 5, wherein a lubricant is partially filled in a space between the partition portion and the sliding bearing.   One or both of the first inertial body side member and the second inertial body side member have a surface formed so as to keep the airflow in the external space away from the sliding bearing. The torque fluctuation absorber according to claim 1.

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