JP2016008712A - Damper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a damper device which further reduces slide torque.SOLUTION: A damper device 100 according to an embodiment includes: a first rotary member 1 and a second rotary member 2 which may rotate around a rotation center Ax; an elastic member 6 which elastically expands and contracts in conjunction with relative rotation between the first rotary member 1 and the second rotary member 2; and a bearing 5 disposed between the first rotary member 1 and the second rotary member 2. The first rotary member 1 is rotatably supported by the second rotary member 2 through the bearing 5. The first rotary member 1 and the second rotary member 2 are positioned relative to each other in an axial direction of the rotation center Ax through the bearing 5.

Description

  The present invention relates to a damper device.

  Conventionally, a first rotating member and a second rotating member that are rotatable around a rotation center, and a friction member that is sandwiched in an axial direction between the first rotating member and the second rotating member to generate a sliding torque. And an elastic member that elastically expands and contracts with the relative rotation of the first rotating member and the second rotating member to relieve torque fluctuation, and the first rotating member and the second rotating member A damper device in which a member is positioned in an axial direction by a friction member is known.

JP 2012-193773 A

  In the conventional damper device, since the friction member is sandwiched between the first rotating member and the second rotating member, it is difficult to reduce the sliding torque. That is, it would be meaningful if a damper device capable of reducing the sliding torque can be obtained.

  The damper device according to the embodiment includes a first rotating member that can rotate around the rotation center, a second rotating member that can rotate around the rotation center, the first rotating member, and the second rotating member. An elastic member that elastically expands and contracts with relative rotation around the rotation center, and a bearing provided between the first rotation member and the second rotation member. The rotating member is rotatably supported by the second rotating member through the bearing, and the first rotating member and the second rotating member are rotated by the bearing through the bearing. They are positioned relative to each other in the central axial direction. According to the damper device of the embodiment, the bearing is used for the axial positioning of the first rotating member and the second rotating member, thereby interposing between the first rotating member and the second rotating member. The friction member can be reduced. Therefore, the sliding torque of the damper device can be further reduced.

  Further, in the damper device, for example, a third rotating member that is configured to be rotatable around the rotation center and is located on the opposite side of the axial direction from the first rotating member of the second rotating member. And a sliding member provided between the second rotating member and the third rotating member, and at least of the sliding member, the second rotating member, and the third rotating member A gap is provided between one side. Therefore, for example, the second rotating member and the third rotating member can face each other in the axial direction with a gap or with a sliding member interposed therebetween. The sliding torque in a state where the rotating member rotates relatively can be further reduced.

  In the damper device, for example, when the second rotating member and the third rotating member move relative to each other in the axial direction and approach each other, the sliding member moves between the second rotating member and the third rotating member. It is configured to slide between at least one of the second rotating member and the third rotating member by being sandwiched between the third rotating member and the third rotating member. Thus, for example, a state in which the second rotating member and the third rotating member rotate relative to each other as compared with the configuration in which the sliding member is always sandwiched between the second rotating member and the third rotating member. The sliding torque at can be further reduced.

  Further, in the damper device, for example, the first rotating member and the second rotating member sandwich the bearing in the axial direction, and the first rotating member is configured so that the bearing is in the axial direction. A first restricting portion for restricting movement in a direction away from the second rotating member; Therefore, for example, a portion where the first rotating member and the second rotating member are positioned in the axial direction by the bearing can be configured relatively simply.

  In the damper device, for example, the first rotating member further includes a second restricting portion that restricts the bearing from moving in a direction away from the first rotating member with respect to the axial direction. Therefore, for example, the first rotating member and the second rotating member can be positioned on both sides in the axial direction by the bearing.

FIG. 1 is an exemplary front view from the axial direction of the damper device according to the first embodiment. FIG. 2 is an exemplary cross-sectional view of the damper device according to the first embodiment. FIG. 3 is an enlarged view of a part of FIG. FIG. 4 is an exemplary rear view from the axial direction of a part of the damper device according to the first embodiment. FIG. 5 is an exemplary diagram showing the relationship between the relative twist angle (angle difference) and torque (torque difference) between the first rotating member and the second rotating member of the damper device of the first embodiment. FIG. FIG. 6 is an exemplary cross-sectional view of a part of the damper device according to the second embodiment. FIG. 7 is an exemplary cross-sectional view of a part of the damper device of the third embodiment.

  Hereinafter, embodiments will be described with reference to the drawings. It should be noted that the following exemplary embodiments include similar components. Therefore, below, the same code | symbol is attached | subjected to the same component, and the overlapping description is abbreviate | omitted. Further, the configuration (technical feature) of the embodiment shown below, and the operation and result (effect) based on the configuration are examples.

<First Embodiment>
The damper device 100 (torque fluctuation absorber) is positioned, for example, between an input side engine (power device, not shown) and an output side transmission (transmission device, not shown). The damper device 100 can reduce fluctuations in driving force (torque, rotation) between the input side and the output side. The damper device 100 is not limited to be provided between the engine and the transmission, but can be provided between the other two rotating elements, for example, between the engine and the rotating electrical machine (motor generator). It can be provided in a vehicle (for example, a hybrid vehicle) or a machine having a rotating element. In the following description, the axial direction indicates the axial direction of the rotation center Ax (rotation axis, axis), the radial direction indicates the radial direction of the rotation center Ax, and the circumferential direction indicates the circumferential direction of the rotation center Ax. Further, in this embodiment, for convenience, the axial engine side (left side in FIGS. 2 and 3) is one axial side, and the axial transmission side (right side in FIGS. 2 and 3) is the other axial side. Let it be the side.

  The damper device 100 rotates around the rotation center Ax. As shown in FIGS. 1 and 2, the damper device 100 is configured as a flat disk that is thin in the axial direction as a whole.

  The damper device 100 includes a damper unit 101 and a limiter unit 102. The damper part 101 is located on one side in the axial direction (left side in FIG. 2), and the limiter part 102 is located on the outer side in the radial direction of the damper part 101. The damper part 101 is configured in a flat disk shape that is thin in the axial direction, and the limiter part 102 is configured in an annular shape. The damper unit 101 reduces torque fluctuation, and the limiter unit 102 blocks excessive torque transmission between the damper unit 101 and the output side (transmission).

  As shown in FIG. 2, the damper portion 101 includes a first rotating member 1, a second rotating member 2, and an elastic member 6. The first rotating member 1 includes a portion (side plates 13 and 14) positioned on both sides in the axial direction inside the radial direction, and a portion (drive plate 12) positioned on one side in the axial direction outside the radial direction. And). Moreover, the 2nd rotation member 2 has the part (driven plate 21) located in the center part of the axial direction. The first rotating member 1 and the second rotating member 2 are each configured in an annular and plate shape that crosses the rotation center Ax (for example, substantially orthogonally) and expands in the radial direction. The first rotating member 1 and the second rotating member 2 are provided so as to be rotatable around the rotation center Ax. The drive plate 12 of the first rotating member 1 is connected to the input side (engine side), and the driven plate 21 of the second rotating member 2 is connected to the output side (transmission side, fourth rotating member 4). ing. The elastic member 6 is positioned between the side plates 13 and 14 of the first rotating member 1 and the driven plate 21 of the second rotating member 2 and extends along the circumferential direction. As the first rotating member 1 and the second rotating member 2 rotate relative to each other, the elastic member 6 elastically expands and contracts in the circumferential direction, thereby reducing torque fluctuation.

  The first rotating member 1 includes a drive plate 12 (member) and a plurality of (for example, two) side plates 13 and 14 (members). The side plates 13 and 14 are located inside the drive plate 12 in the radial direction.

  The side plate 13 (first side plate) is located on one side (left side in FIG. 2) of the side plate 14 (second side plate) in the axial direction. That is, the side plates 13 and 14 are spaced apart from each other in the axial direction. The side plates 13 and 14 are each configured in an annular and plate shape spreading in the radial direction. As shown in FIG. 1, the side plates 13 and 14 are provided with a plurality of openings 13 a and 14 a at intervals in the circumferential direction. As shown in FIG. 2, the opening 13a and the opening 14a are configured as through holes that overlap each other in the axial direction, for example. In the opening 13a and the opening 14a, the elastic member 6 in the initial state (set state) is disposed between the edge on one side and the edge on the other side in the respective circumferential directions. The side plates 13 and 14 are coupled (integrated) to each other via a coupler C1 (for example, a rivet) shown in FIG.

  As shown in FIG. 1, the drive plate 12 includes an annular base portion 15 and a plurality of (for example, four) projecting portions 16 (for example, four) projecting from the base portion 15 toward the radially inner side (rotation center Ax side). 2). The plurality of protrusions 16 are arranged at intervals in the circumferential direction of the base portion 15. An opening 17 (notch, recess, groove) is provided between two protrusions 16 and 16 adjacent to each other in the circumferential direction of the drive plate 12. As shown on the upper side of the elastic member 6 in FIG. 2, the protrusion 16 is provided with an opening 16 a through which the coupler C <b> 1 is passed together with the openings 13 b and 14 b of the side plates 13 and 14. The drive plate 12 and the side plates 13 and 14 are coupled to each other by a coupler C1. Therefore, the drive plate 12 rotates integrally with the side plates 13 and 14. As shown in FIG. 1, the base portion 15 is provided with a plurality of openings 15 a at intervals in the circumferential direction. The opening 15a can function as a hole through which a coupling tool such as a bolt that couples the first rotating member 1 and the flywheel (inertial body) is passed. The first rotating member 1 is coupled to the output shaft of the engine via a flywheel, for example, and rotates integrally with the output shaft. The first rotating member 1, that is, the drive plate 12 and the side plates 13 and 14 can be made of a metal material, for example.

  As shown in FIG. 2, the second rotating member 2 includes a driven plate 21 (member), a cover 22 (member), and a pressure plate 23 (member). The driven plate 21 is positioned on one side of the second rotating member 2 in the axial direction (left side in FIG. 2), and the cover 22 is positioned on the other side in the axial direction of the driven plate 21 (right side in FIG. 2). The pressure plate 23 is located radially outside the second rotating member 2 and between the driven plate 21 and the cover 22.

  As shown in FIG. 2, the driven plate 21 is located between the side plate 13 and the side plate 14 of the first rotating member 1. Therefore, the driven plate 21 can also be referred to as a center plate. The driven plate 21 has a cylindrical portion 21a and wall portions 21b and 21c. The cylindrical portion 21a is a radially inner portion of the driven plate 21, and is configured in a cylindrical shape. As shown also in FIG. 3, the tubular portion 21 a is positioned so as to be separated from the inside of the side plate 13 in the radial direction and is provided so as to surround the tubular portion 43 of the hub member 41. The wall portion 21b protrudes radially outward from the other axial end portion (right side in FIGS. 2 and 3) of the cylindrical portion 21a and crosses the rotation center Ax (for example, substantially orthogonally). It is configured as a spread plate. As shown in FIG. 2, the radially inner portion of the wall portion 21 b is located between the side plate 13 and the side plate 14. The outer portion in the radial direction of the wall portion 21 b is located on the other side (right side in FIG. 2) of the drive plate 12 in the state of passing through the opening 17. The wall 21c protrudes from the radially outer edge of the wall 21b to the other axial side (the right side in FIG. 2) and radially outward, and intersects the rotation center Ax (for example, approximately It is configured in an annular and plate shape that spreads out (perpendicularly).

  As shown in FIG. 4, a plurality of openings 25 are provided in the wall portion 21 b of the driven plate 21 at intervals in the circumferential direction. The opening 25 is configured as, for example, a through hole that penetrates the wall 21b along the axial direction, that is, the direction perpendicular to the paper surface of FIG. The opening 25 includes openings 25a, 25b, and 25c. The opening 25a is positioned on the radially outer side of the opening 25, the opening 25b is positioned on the radially inner side of the opening 25a, and the opening 25c is positioned on the radially inner side of the opening 25b. Is located. As shown in FIG. 2, the protrusion 16 of the drive plate 12 is inserted into the opening 25a. In the present embodiment, the drive plate 12 (first rotating member 1) and the driven plate 21 (second rotating member) are brought into contact with the circumferential end surface of the protrusion 16 and the circumferential end surface of the opening 25a. The range of relative rotation around the rotation center Ax with 2) is limited. Further, as shown in FIG. 4, the elastic member 6 in the initial state (set state) is disposed in the opening 25b across the edge on one side and the edge on the other side in the circumferential direction. . As shown in FIG. 2, the opening 25 b overlaps the openings 13 a and 14 a of the side plates 13 and 14 in the axial direction. The opening 25c is configured as a long hole in which the coupler C2 (see FIGS. 2 and 4) is caught in the circumferential direction.

  As shown in FIG. 2, the cover 22 includes a wall portion 22 a that is overlapped with the wall portion 21 c of the driven plate 21 in the axial direction, and a radially inner edge of the wall portion 22 a from the other side in the axial direction ( 2) and a wall portion 22b protruding inward in the radial direction. Each of the wall portions 22a and 22b has an annular shape and a plate shape that crosses the rotation center Ax (for example, substantially orthogonal) and expands in the radial direction. The wall 21c of the driven plate 21 and the wall 22a of the cover 22 are coupled (integrated) to each other, for example, by welding or screw coupling.

  The pressure plate 23 protrudes from the annular wall portion 23a and the radially outer edge portion of the wall portion 23a toward one side in the axial direction (the left side in FIG. 2, the wall portion 21b side of the driven plate 21). And a plurality of protruding portions 23b (see the lower side in FIG. 2). The plurality of projecting portions 23b are provided at intervals in the circumferential direction of the wall portion 23a. Each protrusion 23b is inserted into an opening 21e provided in the wall 21b of the driven plate 21. The protrusion 23b and the edge of the opening 21e are hooked to each other in the circumferential direction. Therefore, the pressure plate 23 rotates integrally with the driven plate 21 and the cover 22 around the rotation center Ax. The second rotating member 2, that is, the driven plate 21, the cover 22, and the pressure plate 23 can be made of, for example, a metal material.

  The elastic member 6 (first elastic member) shown in FIGS. 1 and 2 is a coil spring made of, for example, a metal material and extending substantially along the circumferential direction. The elastic member 6 is accommodated in the openings 13a and 14a and the opening 25b that overlap each other in the axial direction. With such a configuration, when the edge on one side in the circumferential direction of the openings 13a and 14a and the edge on the other side in the circumferential direction of the opening 25b rotate relatively to each other, the edges are elastic. The member 6 is elastically contracted. Conversely, in a state where the openings 13a and 14a and the opening 25b are elastically shrunk, one edge in the circumferential direction of the openings 13a and 14a and the other edge in the circumferential direction of the opening 25b Elastic members 6 elastically extend when they rotate relative to each other in a direction away from each other. That is, the elastic member 6 is sandwiched between the first rotating member 1 and the second rotating member 2, and substantially along the circumferential direction (substantially tangential direction) with relative rotation around the rotation center Ax. Elastically expands and contracts. The elastic member 6 stores torque as a compression force by being elastically contracted, and releases the compression force as a torque by being elastically extended. Thus, the elastic member 6 is positioned between the first rotating member 1 and the second rotating member 2, and substantially extends along the circumferential direction between the first rotating member 1 and the second rotating member 2. It is sandwiched and elastically expands and contracts substantially along the circumferential direction. The damper portion 101 can relieve torque fluctuations by the expansion and contraction of the elastic member 6.

  As shown in FIG. 2, the limiter unit 102 is positioned on the damper device 100 on the radially outer side and the other axial side (the right side in FIG. 2). The limiter unit 102 includes a cover 22, a friction member 61, a lining plate 42 (fourth rotating member 4), and a friction member from the other side in the axial direction (right side in FIG. 2) toward one side (left side in FIG. 2). 62, a pressure plate 23, an elastic member 63, and a driven plate 21. The cover 22, the friction member 61, the lining plate 42, the friction member 62, the pressure plate 23, the elastic member 63, and the driven plate 21 overlap with each other in close contact with each other in the axial direction.

  Each of the friction members 61 and 62 is formed in an annular and plate shape that crosses the rotation center Ax (for example, substantially orthogonal) and expands in the radial direction. The friction member 61 (first friction member) is positioned between the wall portion 22 b of the cover 22 and the edge portion 42 b of the lining plate 42, and the friction member 62 (second friction member) is the wall of the pressure plate 23. It is located between the portion 23 a and the edge 42 b of the lining plate 42. The friction members 61 and 62 are provided with a plurality of openings 61a and 62a (see the lower side in FIG. 2), respectively. A protrusion 22c provided on the cover 22 is inserted into the opening 61a, and a protrusion 23c provided on the pressure plate 23 is inserted into the opening 62a. The protrusions 22c and 23c and the edges of the openings 61a and 62a are respectively hooked in the circumferential direction. Therefore, the friction members 61 and 62 rotate integrally around the cover 22 and the pressure plate 23, that is, the second rotating member 2 and the rotation center Ax. The friction members 61 and 62 can be made of, for example, a synthetic resin material containing glass fiber material or synthetic rubber.

  The elastic member 63 (second elastic member) is positioned between the wall portion 21b of the driven plate 21 and the wall portion 23a of the pressure plate 23 that are overlapped in the axial direction. Elastic force in a direction away from the direction is applied. Further, the elastic member 63 overlaps the sliding surfaces (friction surfaces) of the friction members 61 and 62 in the axial direction. The elastic member 63 presses the wall portion 23a of the pressure plate 23 against the wall portion 22b of the cover 22 with the friction member 62, the edge portion 42b of the lining plate 42, and the friction member 61 interposed therebetween. That is, a frictional force is generated between the friction members 61 and 62 and the edge portion 42 b of the lining plate 42 due to a load due to the elastic force of the elastic member 63. In the present embodiment, the second rotating member 2 (and the first rotating member 1) and the fourth rotating member until a torque difference (limit torque, threshold value) exceeding these frictional forces (maximum static frictional force) is obtained. Do not slide with 4. The elastic member 63 can be constituted by, for example, an annular (cylindrical) leaf spring (a disc spring, a cone spring) made of a metal material.

  The lining plate 42 is a part of the fourth rotating member 4. As shown in FIG. 2, the fourth rotating member 4 is positioned on the other axial side of the damper device 100 (the right side in FIG. 2). The fourth rotating member 4 includes a hub member 41 and a lining plate 42. The hub member 41 is positioned on the radially inner side of the fourth rotating member 4, and the lining plate 42 is positioned on the radially outer side of the hub member 41.

  The hub member 41 includes a cylindrical tubular portion 43 and a wall portion 44 that protrudes radially outward from an end portion on the other axial side (right side in FIG. 2) of the tubular portion 43. . The cylindrical portion 43 is provided so as to surround the input shaft of the transmission. The cylindrical portion 43 is coupled to the input shaft of the transmission, for example, by press fitting or spline coupling, and rotates integrally with the input shaft. The wall portion 44 is formed in an annular and plate shape that extends in the radial direction so as to cross the rotation center Ax (for example, substantially orthogonally). The wall portion 44 is positioned so as to be separated from the other axial side of the elastic member 6 (the right side in FIG. 2).

  The lining plate 42 extends outward from the wall 44 of the hub member 41 in the radial direction. The lining plate 42 is formed in an annular and plate shape spreading in the radial direction. As shown in FIG. 2, the lining plate 42 and the wall 44 are coupled (integrated) to each other by a coupling tool C3 (for example, a rivet) passed through the respective openings 42a and 44a. Therefore, the lining plate 42 rotates integrally with the hub member 41. An outer edge 42 b (peripheral edge) in the radial direction of the lining plate 42 is positioned between the wall 22 b of the cover 22 and the wall 23 a of the pressure plate 23. The fourth rotating member 4, that is, the hub member 41 and the lining plate 42 can be made of, for example, a metal material.

  In the limiter unit 102, the torque difference between the damper unit 101 (first rotating member 1 and second rotating member 2) and the side of the limiter unit 102 opposite to the damper unit 101 (fourth rotating member 4) is In a state smaller than the threshold value, no slip occurs due to the elastic pressing force of the elastic member 63, and the damper device 100 including the damper portion 101 and the limiter portion 102 rotates integrally. In other words, in a state where the torque difference between the damper part 101 and the limiter part 102 opposite to the damper part 101 is larger than the threshold value, the limiter part 102 causes a frictional force (maximum stationary) due to the elastic pressing force of the elastic member 63. Slip exceeding (frictional force) occurs. The limiter unit 102 thus functions as a torque limiter and suppresses transmission of excessive torque exceeding the set value.

  Further, as shown in FIG. 3, a bearing member 8 is provided inside the driven plate 21 in the radial direction. The bearing member 8 includes a cylindrical tubular portion 8a, and a wall portion 8b projecting radially outward from an end portion on the other axial side (right side in FIG. 3) of the tubular portion 8a. The tubular portion 8a is positioned between the tubular portion 43 of the hub member 41 provided on the radially inner side and the tubular portion 21a of the driven plate 21 provided on the radially outer side. The wall portion 8b is formed in an annular and plate shape extending in the radial direction, and is positioned on the other side (right side in FIG. 3) of the wall portion 21b of the driven plate 21 in the axial direction. In the present embodiment, the driven plate 21 is supported and positioned in the radial direction by the hub member 41 (fourth rotating member 4) via the bearing member 8. The bearing member 8 supports the driven plate 21, that is, the second rotating member 2 so as to be rotatable in a predetermined posture. The bearing member 8 is, for example, a sliding bearing (for example, a metal or a bush) made of a metal material or a synthetic resin material.

  Further, as shown in FIG. 3, a third rotating member 3 is provided between the side plates 13 and 14 and the driven plate 21. The third rotating member 3 has a plurality (for example, two) of control plates 31 and 32 (members). The control plate 31 (first control plate) is located between the side plate 13 and the wall portion 21b of the driven plate 21, and the control plate 32 (second control plate) is formed between the side plate 14 and the driven plate 21. It is located between the wall 21b. That is, the control plates 31 and 32 are spaced apart from each other in the axial direction. The control plates 31 and 32 are each configured in an annular and plate shape that expands in the radial direction, and through a coupler C2 (for example, a rivet) that penetrates the opening 25c (see FIGS. 2 and 4) in the axial direction. Are coupled (integrated) with each other. In the present embodiment, the driven plate 21 (second rotating member 2) and the control plates 31 and 32 (third rotating member 3) are brought into contact with the coupler C2 and the circumferential end surface of the opening 25c. The range of relative rotation around the rotation center Ax is limited.

  Sliding members 7 and 9 are provided between the side plates 13 and 14 (first rotating member 1) and the control plates 31 and 32 (third rotating member 3), respectively. The sliding member 7 (first sliding member) includes an annular wall portion 7a sandwiched between the side plate 13 and the control plate 31, and one axial side from the wall portion 7a (left side in FIG. 3). A plurality of projecting portions 7b projecting toward the side plate 13 side). The sliding member 9 (second sliding member) includes an annular wall portion 9a positioned between the side plate 14 and the control plate 32, and a radially outer end portion of the wall portion 9a. And a plurality of protruding portions 9b protruding toward the other side in the axial direction (the right side in FIG. 3, the side plate 14 side). As shown in FIG. 3, the protruding portions 7b and 9b are inserted into openings 13c and 14c provided in the side plates 13 and 14, respectively. The protrusions 7b and 9b and the edges of the openings 13c and 14c are hooked to each other in the circumferential direction. Therefore, the sliding members 7 and 9 rotate integrally with the side plates 13 and 14, that is, the first rotating member 1 around the rotation center Ax. The sliding members 7 and 9 are provided with a sliding torque (friction torque) when the first rotating member 1 and the second rotating member 2 (and the third rotating member 3) rotate relatively around the rotation center Ax. ) Can reduce vibration and noise. The sliding members 7 and 9 can be made of, for example, a synthetic resin material.

  An elastic member 52 is provided between the side plate 14 and the sliding member 9. The elastic member 52 (third elastic member) gives the side plate 14 and the sliding member 9 an elastic force in a direction away from each other in the axial direction. That is, the elastic member 52 presses the sliding member 9 against the control plate 32, and consequently presses the control plate 31 against the sliding member 7 via the control plate 32. Thus, the elastic member 52 can give the sliding members 7 and 9 sliding resistance (friction resistance). The elastic member 52 is, for example, an annular (cylindrical) plate spring (a disc spring or a cone spring) made of a metal material.

  Further, as shown in FIG. 3, a bearing 5 is provided inside the side plate 13 in the radial direction. In the present embodiment, the side plate 13, that is, the first rotating member 1 is rotatably supported by the driven plate 21, that is, the second rotating member 2 via the bearing 5. The bearing 5 is formed in an annular shape, and is inserted (press-fitted) into the outer peripheral side of the cylindrical portion 21a of the driven plate 21 from one axial side (left side in FIG. 3). The wall portion 21b of the driven plate 21 is in contact with the end surface on the other side (right side in FIG. 3) of the bearing 5 in the axial direction. In addition, on one side of the bearing 5 in the axial direction (left side in FIG. 3), a fixture 51 (for example, a C-ring) is provided to prevent the bearing 5 from coming off from the cylindrical portion 21a. In the present embodiment, the bearing 5 is a rolling bearing (for example, a ball bearing).

  An interposed member 18 (member, restricting member) is provided on the outer side in the radial direction of the bearing 5. The interposition member 18 includes a cylindrical tubular portion 18a, a wall portion 18b projecting radially inward from an end portion on one axial side (left side in FIG. 3) of the tubular portion 18a, and the tubular portion 18a. And a wall portion 18c protruding outward in the radial direction from the center portion in the axial direction. The cylindrical portion 18 a is located between the bearing 5 and the side plate 13. The wall portion 18b is positioned on one side (left side in FIG. 3) of the bearing 5 in the axial direction, and the wall portion 18c is positioned between the side plate 13 and the control plate 31. As shown in FIG. 3, the wall portion 18 c is in contact with the end surface on the other side (right side in FIG. 3) of the side plate 13, and the cylindrical portion 18 a is the end surface on the radially inner side of the side plate 13. In contact with. Further, the wall portion 18b is in contact with the end surface on one side (left side in FIG. 3) of the bearing 5 in the axial direction. The side plate 13 and the interposition member 18 can be coupled (integrated) to each other, for example, by welding.

  The bearing 5 includes a wall portion 18b of the interposed member 18 located on one side in the axial direction (left side in FIG. 3) and a wall of the driven plate 21 located on the other side in the axial direction (right side in FIG. 3). It is sandwiched between the part 21b. That is, the side plate 13 and the driven plate 21 are positioned with respect to each other in the axial direction via the bearing 5 and the interposed member 18. Specifically, the bearing 5 and the interposed member 18 prevent the side plate 13 and the driven plate 21 from approaching each other in the axial direction. Therefore, according to this embodiment, for example, by using the bearing 5 for the axial positioning of the side plate 13 and the driven plate 21, the friction member can be reduced, and the sliding torque of the damper device 100 can be further reduced. can do.

  As shown in FIG. 3, the sliding member 10 is provided between the wall portion 21 b of the driven plate 21 and the control plate 32. The sliding member 10 is formed in an annular and plate shape spreading in the radial direction. The sliding member 10 is positioned on the outer side in the radial direction of the bearing member 8, and is supported and positioned in the radial direction by the wall portion 8 b of the bearing member 8. The sliding member 10 can be made of, for example, a synthetic resin material. The sliding member 10 is made of a material different from that of the sliding members 7 and 9. Specifically, the sliding torque (friction torque, frictional force) when the sliding member 10 slides with the metal material is the sliding torque when the sliding members 7 and 9 slide with the metal material under the same conditions. Smaller than.

  In the present embodiment, for example, the sliding member 10 and the wall portion 21b of the driven plate 21 are in contact with each other, and an axial gap S1 is provided between the sliding member 10 and the control plate 32. The clearance S1 is set to be smaller than the minimum axial clearance S2 between the wall portion 21b and the control plate 32. Therefore, the driven plate 21 (second rotating member 2) moves relative to the side plate 13 (first rotating member 1) in a direction away from the other side in the axial direction (right side in FIG. 3), and the wall portion 21b. When the control plate 32 approaches, the wall portion 21b and the control plate 32 do not directly contact (slide), and the sliding member 10 is sandwiched between the wall portion 21b and the control plate 32. In this state, the sliding member 10 has at least one of the driven plate 21 and the control plate 32 according to relative rotation between the driven plate 21 (second rotating member 2) and the control plate 32 (third rotating member 3). Slide. As described above, in the present embodiment, the configuration including the sliding member 10 causes relative movement in the axial direction between the first rotating member 1 and the second rotating member 2, that is, relative movement more than the gap S1 is clogged. Limited (suppressed). In a state where the relative movement in the axial direction between the first rotating member 1 and the second rotating member 2 is restricted, the sliding member 10 causes the second rotating member 2 and the third rotating member 3 to An increase in the sliding torque is suppressed. Here, the control plate 32 (third rotating member 3) is such that the second rotating member 2 rotates relative to the first rotating member 1 in one direction of rotation (for example, counterclockwise and negative). In this state (a state on the left side of 0 in FIG. 5), the first rotating member 1 is rotated relative to the first rotating member 1. On the other hand, the control plate 32 (third rotating member 3) is configured such that the second rotating member 2 rotates relative to the other side (for example, clockwise side, positive side) in the rotation direction with respect to the first rotating member 1. In the present state (the state on the right side of 0 in FIG. 5), it rotates relative to the second rotating member 2, and the sliding torque Trs in this state is substantially determined by the configuration including the sliding member 10 described above. Therefore, according to the present embodiment, the magnitudes of the sliding torques Trl and Trs can be changed depending on the relative rotational direction of the first rotating member 1 and the second rotating member 2, and also differ depending on the relative rotational direction. The smaller sliding torque Trs among the sliding torques Trl and Trs can be set to a lower value than when the friction member is used. The resistance torque of the bearing 5 at the time of relative rotation between the first rotating member 1 and the second rotating member 2 is smaller than the sliding torque by the sliding members 7 and 9.

  In the present embodiment, for example, in the normal state (initial state) in which the gap S1 is provided between the sliding member 10 and the control plate 32, the driven plate 21 (wall portion 21b, second rotating member 2) and The control plate 32 (third rotating member 3) is in a separated state. On the other hand, in a state where the sliding member 10 is sandwiched between the driven plate 21 and the control plate 32 for some reason, with the relative rotation of the second rotating member 2 and the third rotating member 3, It slides with at least one of the driven plate 21 and the control plate 32. Thus, in this embodiment, since the state where the gap S1 is provided between the sliding member 10 and the control plate 32 occurs, the sliding member 10 is always sandwiched between the driven plate 21 and the control plate 32. In comparison, the sliding torque in the state in which the second rotating member 2 and the third rotating member 3 rotate relatively tends to be further reduced.

  As described above, in the present embodiment, for example, the side plate 13 (first rotating member 1) and the driven plate 21 (second rotating member 2) are axially connected to each other via the bearing 5. It is positioned. Therefore, according to the present embodiment, for example, the bearing 5 is used instead of the friction member for the axial positioning of the side plate 13 (first rotating member 1) and the driven plate 21 (second rotating member 2). Thus, the number of friction members can be reduced, and the side plate 13 (first rotating member 1) and the driven plate 21 (second rotating member 2) can be relatively rotated without interposing a friction member. Is obtained. Therefore, the sliding torque of the damper device 100 can be further reduced.

  Further, in the present embodiment, for example, the control plate 32 (the third rotating member 2) positioned on the opposite side in the axial direction from the side plate 13 (the first rotating member 1) of the driven plate 21 (the second rotating member 2). A rotating member 3) and a sliding member 10 positioned between the driven plate 21 and the control plate 32, and at least one of the sliding member 10, the driven plate 21 and the control plate 32 (in this embodiment, for example, A gap S1 is provided between the control plate 32) and the control plate 32). Therefore, according to the present embodiment, for example, the driven plate 21 (second rotating member 2) and the control plate 32 (third rotating member 3) have the gap S1 or the sliding member 10 interposed therebetween. In this state, the sliding plate 21 (second rotating member 2) and the control plate 32 (third rotating member 3) rotate more in a relatively rotating state. Can be small.

  Further, in the present embodiment, for example, the sliding member 10 is a case where the driven plate 21 (second rotating member 2) and the control plate 32 (third rotating member 3) move relative to each other in the axial direction and approach each other. The driven plate 21 and the control plate 32 are sandwiched between the driven plate 21 and the control plate 32 so as to slide with at least one of the driven plate 21 and the control plate 32. Therefore, according to the present embodiment, for example, compared with a configuration in which the sliding member 10 is always sandwiched between the driven plate 21 (second rotating member 2) and the control plate 32 (third rotating member 3). The sliding torque in a state where the driven plate 21 (second rotating member 2) and the control plate 32 (third rotating member 3) rotate relatively can be further reduced.

  In the present embodiment, the movement of the control plate 32 (third rotating member 3) to one side in the axial direction (left side in FIG. 3) is restricted by the sliding member 10, while the other side in the axial direction ( The movement to the right in FIG. 3 is limited by the elastic pressing force of the elastic member 52. That is, the elastic member 52 can prevent the driven plate 21 and the control plate 31 from moving relative to each other in the axial direction and approaching each other. Therefore, for example, the positioning member (sliding member, resin member) provided between the driven plate 21 and the control plate 31 in the axial direction can be eliminated, and the second rotating member 2 and the third rotation are correspondingly eliminated. The sliding torque generated between the member 3 and the member 3 can be further reduced. In this embodiment, since the friction coefficient of the sliding member 10 is smaller than the friction coefficient of the sliding members 7 and 9, the driven plate 21 (second rotating member 2) and the control plate 32 (first The sliding torque in a state where the third rotating member 3) rotates relatively can be further reduced.

Second Embodiment
The damper device 100A of the embodiment shown in FIG. 6 has the same configuration as the damper device 100 of the first embodiment. Therefore, also according to this embodiment, the same result (effect) based on the same configuration as that of the first embodiment can be obtained.

  However, in the present embodiment, as shown in FIG. 6, the protruding portion 13 x is provided on the inner edge in the radial direction of the side plate 13. The protrusion 13x is in contact with the end surface on one side (left side in FIG. 6) of the bearing 5 in the axial direction. And in this embodiment, the bearing 5 was located in the protrusion part 13x of the side plate 13 located in the one side (left side of FIG. 6) of an axial direction, and the other side (right side of FIG. 6) of an axial direction. It is sandwiched between the wall 21 b of the driven plate 21. The protrusion 13x restricts the bearing 5 from moving in the direction away from the driven plate 21 (second rotating member 2) in the axial direction. The protruding portion 13x is an example of a first restricting portion. According to the present embodiment, for example, a portion of the damper device 100A in which the side plate 13 (first rotating member 1) and the driven plate 21 (second rotating member 2) are positioned in the axial direction by the bearing 5 is used. The configuration can be relatively simple. Therefore, for example, the number of parts, manufacturing effort, manufacturing cost, and the like can be further reduced.

<Third Embodiment>
The damper device 100B of the embodiment shown in FIG. 7 has the same configuration as the damper device 100 of the first embodiment. Therefore, also according to this embodiment, the same result (effect) based on the same configuration as that of the first embodiment can be obtained.

  However, in the present embodiment, as shown in FIG. 7, support plates 19 (members, restricting members) are provided at the radially inner edges of the side plates 13. The support plate 19 includes a cylindrical tubular portion 19a, a wall portion 19b projecting radially outward from one axial end (left side in FIG. 7) of the tubular portion 19a, and a tubular portion 19a. And a wall portion 19c protruding inward in the radial direction from the end portion on the other side in the axial direction (right side in FIG. 7). The cylindrical portion 19 a is located outside the bearing 5 in the radial direction and is provided so as to surround the bearing 5. The wall portion 19b is formed in an annular plate shape extending in the radial direction, and is overlapped with the side plate 13. The side plate 13 and the support plate 19 are coupled (integrated) to each other by a coupling tool C4 (for example, a rivet). Therefore, the support plate 19 rotates integrally with the side plate 13, that is, the first rotating member 1. The wall portion 19c is formed in an annular plate shape extending in the radial direction, and is located on the other axial side of the bearing 5 (on the right side in FIG. 7, opposite to the protruding portion 13x in the axial direction). The wall portion 19c is in contact with the end surface on the other side (right side in FIG. 7) of the bearing 5 in the axial direction. And in this embodiment, the bearing 5 was located in the protrusion part 13x of the side plate 13 located in the one side (left side of FIG. 7) of an axial direction, and the other side (right side of FIG. 7) of an axial direction. It is sandwiched between the support plate 19 and the wall portion 19c. The wall portion 19c restricts the bearing 5 from moving in the direction away from the side plate 13 (first rotating member 1) in the axial direction. In the present embodiment, the protruding portion 13x is an example of a first restricting portion, and the wall portion 19c of the support plate 19 is an example of a second restricting portion. Thus, in the present embodiment, the bearing 5 is sandwiched between the protruding portion 13x and the wall portion 19c in the axial direction, whereby the side plate 13 (first rotating member 1) and the bearing 5 (second rotation). The relative movement of the member 2) in the axial direction is restricted. Therefore, according to the present embodiment, for example, the side plate 13 (first rotating member 1) and the driven plate 21 (second rotating member 2) can be positioned on both sides in the axial direction by the bearing 5. Therefore, for example, the configuration of the portion of the damper device 100B where the side plate 13 (first rotating member 1) and the driven plate 21 (second rotating member 2) are positioned in the axial direction by the bearing 5 is the wall portion. It can be realized as a relatively simple configuration including 19c. Further, for example, since the bearing 5 (second rotating member 2) and the first rotating member 1 and thus the third rotating member 3 can be prevented from relatively moving in the axial direction, the sliding member 10 (FIG. 3, FIG. 3) can be suppressed. 6) may be eliminated.

  As mentioned above, although embodiment of this invention was illustrated, the said embodiment is an example and is not intending limiting the range of invention. The above embodiment can be implemented in various other forms, and various omissions, replacements, combinations, and changes can be made without departing from the spirit of the invention. The above embodiments are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof. The present invention can be realized by configurations other than those disclosed in the above embodiments, and various effects (including derivative effects) obtained by the basic configuration (technical features) can be obtained. is there. In addition, the specifications of each component (structure, type, direction, shape, size, length, width, thickness, height, number, arrangement, position, material, etc.) should be changed as appropriate. Can do.

  DESCRIPTION OF SYMBOLS 1 ... 1st rotation member, 2 ... 2nd rotation member, 3 ... 3rd rotation member, 5 ... Bearing, 6 ... Elastic member, 10 ... Sliding member, 13, 14 ... Side plate, 13x ... Projection part ( First regulating part), 19c ... Wall part (second regulating part), 21 ... Driven plate, 31, 32 ... Control plate, 100, 100A, 100B ... Damper device, Ax ... Center of rotation, S1 ... Gap.

Claims (5)

A first rotating member rotatable around a center of rotation;
A second rotating member rotatable around the rotation center;
An elastic member that elastically expands and contracts with relative rotation around the rotation center between the first rotating member and the second rotating member;
A bearing provided between the first rotating member and the second rotating member;
With
The first rotating member is rotatably supported by the second rotating member via the bearing,
The damper device, wherein the first rotating member and the second rotating member are positioned with respect to each other in the axial direction of the rotation center via the bearing. A third rotating member configured to be rotatable about the rotation center, and positioned on the opposite side of the axial direction from the first rotating member of the second rotating member;
A sliding member provided between the second rotating member and the third rotating member;
With
The damper device according to claim 1, wherein a gap is provided between the sliding member and at least one of the second rotating member and the third rotating member.   The sliding member is disposed between the second rotating member and the third rotating member when the second rotating member and the third rotating member relatively move in the axial direction and approach each other. The damper device according to claim 2, wherein the damper device is configured to be sandwiched and slide with at least one of the second rotating member and the third rotating member.   The first rotating member and the second rotating member sandwich the bearing in the axial direction, and the first rotating member is a direction in which the bearing is separated from the second rotating member with respect to the axial direction. The damper apparatus as described in any one of Claims 1-3 which had the 1st control part which controls that it moves to.   5. The damper device according to claim 4, wherein the first rotating member further includes a second restricting portion that restricts the bearing from moving in a direction away from the first rotating member with respect to the axial direction. .

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