JP2015113915A - Damper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a damper device having a novel constitution which can further reduce a malfunction.SOLUTION: A damper device comprises: a third member which rotates around a rotation center, and generates friction resistance when relatively turning between at least either of the first member and a second member and itself; a fourth member which has a portion located between a second sidewall and the second member, rotates integrally with the third member around the rotation center, is constituted relatively movably to the third member in an axial direction of the rotation center, rotates around the rotation center, and generates friction resistance when relatively turning between at least either of the first member and the second member and itself; and a second elastic member which imparts an elastic force in a direction in which the third member and the fourth member are axially separated from each other.

Description

  Embodiments described herein relate generally to a damper device.

  Conventionally, the first member rotating around the rotation center, the second member rotating around the rotation center, and elastically expanding and contracting according to the relative rotation of the first member and the second member. A damper device including a plurality of elastic members and a plurality of friction members sliding with a first member or a second member is known (for example, Patent Document 1).

JP 2000-88000 A

  In this type of damper device, a friction member is provided corresponding to the rotating member, and an elastic member that provides a pressing force that generates a friction force on the friction member may be provided. In such a configuration, for example, inconveniences such as an increase in the number of parts, an increase in weight, an increase in size and complexity of the configuration, and deterioration in mountability due to an increase in thickness are likely to occur. In recent years, there has been an increasing demand for improvement in fuel consumption, and it would be desirable if a damper device having a novel configuration capable of reducing inconveniences could be obtained.

  The damper device according to the embodiment includes, as an example, a first wall portion having a portion separated from each other in the axial direction of the rotation center and a second wall portion, and the first wall portion rotating around the rotation center. A member, a second member that is positioned between the first wall portion and the second wall portion and rotates about the rotation center, and the first member and the second member. A first elastic member that elastically expands and contracts with relative rotation around the rotation center, and a portion positioned between the first wall portion and the second member, and the rotation A third member that rotates about the center and generates a frictional resistance when rotated relative to at least one of the first member and the second member; and the second wall portion, A portion located between the second member and the third member and the center of rotation about the rotation center; Friction resistance when configured to be relatively movable in the axial direction of the third member and the rotation center and relatively rotated between at least one of the first member and the second member. And a second elastic member that gives the third member and the fourth member an elastic force in a direction in which they are separated from each other in the axial direction. That is, in the present embodiment, the third member and the fourth member that rotate integrally with each other while being pushed in the axially separated direction by the second elastic member are the first member or the second member. It is comprised as a member which produces frictional resistance between. Therefore, according to the present embodiment, as an example, the configuration is easily simplified.

  In the damper device, as an example, at least one of the third member and the fourth member is made of a synthetic resin material. Therefore, as an example, the configuration can be simplified more easily than in the case where the synthetic resin material friction member is provided separately.

  In the damper device, as an example, a third elastic member that elastically expands and contracts with relative rotation around the rotation center of the second member, the third member, and the fourth member. Is further provided. Therefore, as an example, it is easy to obtain a configuration in which the third elastic member expands and contracts around the rotation center using the third member and the fourth member that rotate integrally with each other.

  In the damper device, as an example, the second elastic member is an annular disc spring. Therefore, as an example, the damper device is easily thinned in the axial direction.

  In the damper device, as an example, the first member is provided on the third member and intersects the circumferential direction of the rotation center and extends in the axial direction, and the first member is provided on the fourth member. A second surface that faces the surface, and is positioned closer to the center of rotation than the disc spring, supports the third member and the fourth member movably in the axial direction, and A support structure that supports each other in the circumferential direction is further provided. Therefore, as an example, the support structure can be laid out more efficiently in the damper device.

  In the damper device, as an example, the support structure includes a support portion that suppresses the movement of the disc spring. Therefore, as an example, the configuration is more easily simplified than a configuration in which a support portion that suppresses the movement of the disc spring is provided separately.

  In the damper device, as an example, the support structure includes a concave portion provided in one of the third member and the fourth member, and a convex portion provided in the other, and the concave portion has an opening. An end portion, a first portion having a first width along the circumferential direction adjacent to the opening end portion, and the first portion located farther from the opening end portion than the first portion. And a second portion having a second width along the circumferential direction that is narrower than the width of the first portion. Therefore, as an example, local stress concentration hardly occurs in the vicinity of the opening.

  In the damper device, as an example, a fourth elastic member that is positioned between the first member and the second member and elastically presses the second member and the third member, Further prepare. Therefore, as an example, a frictional force having a required magnitude between one of the third member and the fourth member and the second member can be easily obtained with a relatively simple configuration.

Drawing 1 is a front view from the direction of an axis of an example of a damper device of an embodiment. 2 is a cross-sectional view taken along the line II-II in FIG. FIG. 3 is an enlarged view of a part of FIG. FIG. 4 is a rear view including the third member, the fourth member, and the second elastic member of the damper device according to the embodiment. 5 is a cross-sectional view taken along the line VV in FIG. FIG. 6 is a rear view of a third member included in the damper device of the embodiment. FIG. 7 is a front view of a fourth member included in the damper device of the embodiment. 8 is a cross-sectional view taken along the line VIII-VIII in FIG. 9 is a cross-sectional view taken along the line IX-IX in FIG. FIG. 10 is a rear view including the first wall portion, the second member, and the first elastic member of the first member of the damper device of the embodiment, and includes the first member and the second member; It is a figure in the state in which the torque difference has not arisen between. FIG. 11 is a rear view including the first wall portion, the second member, and the first elastic member of the first member of the damper device of the embodiment, and the second member is from the state of FIG. It is a figure in the state rotated in the counterclockwise direction. FIG. 12 is a rear view including the first wall portion, the second member, and the first elastic member of the first member of the damper device of the embodiment, and the second member is from the state of FIG. 10. It is a figure in the state rotated further than the state of FIG. 11 in the counterclockwise direction. FIG. 13 is a rear view including the first wall portion, the second member, and the first elastic member of the first member of the damper device of the embodiment, and the second member is from the state of FIG. It is a figure in the state rotated in the clockwise direction. 14 is a rear view including the first wall portion, the second member, and the first elastic member of the first member of the damper device of the embodiment, and the second member is from the state of FIG. It is a figure in the state which rotated further than the state of FIG. 13 in the clockwise direction.

  Hereinafter, exemplary embodiments of the present invention are disclosed. The configuration of the embodiment shown below, and the operation and result (effect) brought about by the configuration are merely examples. The present invention can be realized by configurations other than those disclosed in the following embodiments. According to the present invention, it is possible to obtain at least one of various effects (including derivative effects) obtained by the configuration.

  The damper device 100 of the present embodiment is positioned between, for example, an engine (power device, not shown) and a transmission (transmission device, not shown). The damper device 100 can mitigate (temporarily store) fluctuations in driving force (torque, rotation). 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, unless otherwise specified, the axial direction is the axial direction of the rotation center Ax (rotation axis, shaft center, see FIGS. 1 and 2), the radial direction is the radial direction of the rotation center Ax, and the circumferential direction is the rotation center. The circumferential direction of Ax shall be shown. In the present embodiment, for the sake of convenience, the line of sight from the left side of FIG. 2 is a front view, and the line of sight from the right side of FIG.

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

  The damper device 100 includes a disk unit 101 and a damper unit 102. The disk part 101 has a wall part 101a and a friction material 101b (facing, pad). Wall part 101a is comprised by the annular | circular shape and plate shape. The friction material 101b is formed in an annular plate shape and is provided on each of one side and the other side in the axial direction of the rotation center Ax with respect to the wall portion 101a. The two friction materials 101b are both positioned at the radially outer end of the wall 101a. The wall 101a and the two friction members 101b are coupled (integrated) with each other by a coupling tool 101c (for example, a rivet) that penetrates the wall 101a.

  The damper part 102 is located on the inner side (rotation center Ax side) in the radial direction of the disk part 101. The damper portion 102 includes the first member 1, the second member 2, the third member 3, and the fourth member 4, the first elastic member 5, the second elastic member 6, and the third elastic member. 7 and the fourth elastic member 8. One of the first member 1 and the second member 2 (for example, the first member 1) is connected to the input side (engine side), and the other (for example, the second member 2) is connected to the output side (transmission side). ). In the damper portion 102, the first elastic member 5 positioned between the first member 1 and the second member 2, or the second member 2, the third member 3, and the fourth member 4. The third elastic member 7 positioned therebetween elastically expands and contracts, so that torque fluctuation is alleviated.

  As shown in FIGS. 2 and 3, the first member 1 has two wall portions 11 and 12 (a plate and an outer plate). The two wall portions 11 and 12 have portions separated from each other in the axial direction. In the present embodiment, for example, the wall portion 11 (first wall portion or second wall portion) is positioned on one side (left side in FIGS. 2 and 3) of the wall portion 12 in the axial direction, and the wall portion 12 ( 2nd wall part or 1st wall part) is located in the other side (right side in FIG. 2, 3) of the axial direction of the wall part 11. As shown in FIG. Each of the walls 11 and 12 is formed in an annular and plate shape that intersects (for example, substantially orthogonal) with the rotation center Ax. The walls 11 and 12 are provided with a plurality of openings 11a and 12a, respectively. The wall portion 11 and the wall portion 12 are coupled by a coupler 13 (for example, a screw or a rivet) and rotate integrally around the rotation center Ax. The radially outer region of the wall 11 and the radially outer region of the wall 12 are coupled to each other, so that at least the radially inner region of the wall 11 and at least the radially inner region of the wall 12 are combined. Are spaced apart from each other in the axial direction. The walls 11 and 12 of the first member 1 are made of, for example, a metal material.

  The second member 2 includes a cylindrical portion 21 and a wall portion 22. The cylindrical portion 21 (base portion, hub) is formed in a cylindrical shape centered on the rotation center Ax. The wall portion 22 (plate, inner plate) is formed in an annular and plate shape that protrudes (projects) outward from the cylindrical portion 21 in the radial direction and intersects with the rotation center Ax (for example, substantially orthogonal). Yes. The wall portion 22 is provided with a plurality of openings 22a and 22b (for example, through holes and holes). The second member 2 is made of a metal material, for example.

  The first elastic member 5 is positioned between the first member 1 and the second member 2, and is relatively rotated around the rotation center Ax between the first member 1 and the second member 2. Accommodates elastic expansion and contraction. The first elastic member 5 is a coil spring made of, for example, a metal material and extending and contracting substantially along the circumferential direction. As shown in FIGS. 1 and 2, the first elastic member 5 is accommodated in openings 11 a, 12 a, and 22 a that overlap each other in the axial direction. In such a configuration, the edge on one side in the circumferential direction of the openings 11a and 12a of the first member 1 and the edge on the other side in the circumferential direction of the opening 22a of the second member 2 are close to each other. The first elastic member 5 is elastically shrunk by the edges when they are rotated relative to each other. Conversely, in a state where the openings 11a, 12a, and 22a are elastically contracted in the openings 11a, 12a, and 22a, one edge in the circumferential direction of the openings 11a and 12a of the first member 1 and the opening 22a of the second member 2 are used. The first elastic member 5 is elastically extended when it is relatively rotated in the direction away from the other edge in the circumferential direction. The first elastic member 5 stores torque as a compression force by being elastically contracted, and releases the compression force as a torque by being elastically extended. In this way, the damper portion 102 can relieve torque fluctuations by the first elastic member 5.

  Next, the third member 3, the fourth member 4, the second elastic member 6, the third elastic member 7, and the fourth elastic member 8 will be described with reference to FIGS. As shown in FIGS. 3, 5, and 6, the third member 3 includes a cylindrical portion 31, a wall portion 32, a protruding portion 33, and a wall portion 34. The cylindrical portion 31 (base portion, hub) is formed in a cylindrical shape centered on the rotation center Ax. The wall portion 32 (plate, middle plate) is formed in an annular and plate shape that projects (projects) radially outward from the cylindrical portion 31 and intersects (for example, substantially orthogonal) with the rotation center Ax. Yes. As shown in FIGS. 3, 5 and 6, the wall portion 32 is provided with an opening 32 a. The opening 32a is configured as, for example, a recess that opens toward one side in the axial direction (the right side in FIGS. 3 and 5). The protruding portion 33 protrudes from the wall portion 32 to one side in the axial direction (the right side in FIGS. 3 and 5), passes through the opening portion 22 a provided in the wall portion 22 of the second member 2, and moves to 32 to the opposite side. The wall 34 protrudes from the wall 32 to one side in the axial direction at a position farther from the rotation center Ax than the protrusion 33. Moreover, the wall part 34 is extended along the circumferential direction, as FIG. 6 shows.

  As shown in FIGS. 3, 5, and 7, the fourth member 4 includes a wall portion 41 and a protruding portion 42. The wall 41 (plate, middle plate) is formed in an annular and plate shape that intersects (for example, substantially orthogonal) with the rotation center Ax. The wall 41 is provided with an opening 41a. The opening 41a is configured, for example, as a recess that opens toward the other side in the axial direction (left side in FIGS. 3 and 5). The protruding portion 42 protrudes from the wall portion 41 toward the other side in the axial direction (left side in FIGS. 3 and 5).

  The third member 3 and the fourth member 4 rotate integrally around the rotation center Ax. 4-6, the protrusion part 33 provided in the 3rd member 3 is comprised by the wall shape extended in the circular arc shape of the periphery of the rotation center Ax by the eyes | visual_axis of an axial direction. The protrusion 33 has a surface 33a that intersects the circumferential direction and extends in the axial direction. On the other hand, as shown in FIGS. 4, 5, and 7, the protruding portion 42 provided on the fourth member 4 is a C-shape that surrounds the protruding portion 33 from the outer side in the radial direction and the outer side in the circumferential direction. It is configured in the shape of a wall that extends like a wall. The protrusion 42 has a surface 42a that intersects the circumferential direction and extends in the axial direction. The surface 33a and the surface 42a face each other. By facing (contacting) these surfaces 33a and 42a, relative movement of the third member 3 and the fourth member 4 in the circumferential direction is suppressed. The protrusion 33 and the protrusion 42 are examples of the support structure 9.

  Moreover, the protrusion part 33 has the surface 33b extended in the axial direction while being along the circumferential direction, as FIG.4, 6 shows. On the other hand, as shown in FIGS. 4 and 7, the protrusion 42 has a surface 42 b that extends along the circumferential direction and in the axial direction. The surface 33b and the surface 42b face each other. By facing (contacting) the surface 33b and the surface 42b, the third member 3 and the fourth member 4 are prevented from relatively moving in the radial direction.

  The third member 3 and the fourth member 4 are configured to be relatively movable in the axial direction. The surfaces 33a, 42a, 33b, and 42b shown in FIGS. 4, 6, and 7 all extend along the axial direction, the surface 33a and the surface 42a face each other in close proximity, and the surface 33b and the surface 42b are in contact with each other. Facing each other in close proximity. That is, in this embodiment, for example, the combination of the surface 33a and the surface 42a and the combination of the surface 33b and the surface 42b relatively guide the third member 3 and the fourth member 4 in the axial direction. . The surfaces 33a and 33b are an example of a first surface, and the surfaces 42a and 42b are an example of a second surface. As shown in FIG. 3, the cylindrical portion 31 of the third member 3 covers the cylindrical portion 21 of the second member 2 from the outside in the radial direction, and the inner surface of the cylindrical portion 31. 31a and the outer surface 21a of the cylindrical portion 21 are close to each other and face each other. That is, in this embodiment, the combination of the surface 31a and the surface 21a relatively guides the third member 4 and the fourth member 4 in the axial direction.

  As shown in FIGS. 2, 3, and 8, the third elastic member 7 is positioned between the second member 2, the third member 3, and the fourth member 4. The third member 3 and the fourth member 4 elastically expand and contract with relative rotation around the rotation center Ax. The third elastic member 7 is a coil spring made of, for example, a metal material and extending and contracting substantially along the circumferential direction. The third elastic member 7 is accommodated in the openings 22b, 32a, 41a that overlap each other in the axial direction. With such a configuration, one edge in the circumferential direction of the opening 22b of the second member 2 and the other edge in the circumferential direction of the openings 32a and 41a of the third member 3 and the fourth member 4 are arranged. When the parts relatively rotate in the direction in which they approach each other, the third elastic member 7 is elastically contracted by the edges. On the contrary, the edge of one side in the circumferential direction of the opening 22b of the second member 2, the third member 3 and the fourth member 4 in a state of being elastically contracted in the openings 22b, 32a and 41a. The third elastic member 7 is elastically extended when it relatively rotates in the direction away from the other edge in the circumferential direction of the openings 32a, 41a. The third elastic member 7 stores torque as a compression force by being elastically contracted, and releases the compression force as a torque by being elastically extended. In this way, the damper portion 102 can also reduce torque fluctuations by the third elastic member 7.

  As shown in FIGS. 4 and 5, the second elastic member 6 is positioned between the third member 3 and the fourth member 4, and is connected to the third member 3 and the fourth member 4. The elastic force in the direction of separating is given. The second elastic member 6 is, for example, an annular (cylindrical) plate spring (cone spring, cone spring) made of a metal material. The second elastic member 6 is supported by the wall 34 of the third member 3 as shown in FIGS. 4 to 6, and the fourth member 4 as shown in FIGS. Is supported at the outer end (edge) in the radial direction. Further, the protruding portion 42 of the fourth member 4 is accommodated inside the ring of the second elastic member 6. In other words, the step 45 prevents the second elastic member 6 from moving in the radial direction. The protruding portion 42 is an example of a support portion that suppresses the movement of the second elastic member 6. In addition, the fourth member 4 has a protruding portion 43 (support portion, convex portion) that suppresses the movement of the second elastic member 6 in the circumferential direction. The protruding portion 43 protrudes radially outward from the wall portion 41. The protrusion 43 is accommodated in the recess 6a provided in the second elastic member 6, and the protrusion 43 and the edge of the recess 6a are caught in the circumferential direction. The wall portion 41 may be provided with a recess that hooks in the circumferential direction with the second elastic member 6 instead of the protruding portion 43.

  The first member 1 and the second member 2 are made of a metal material, and at least one of the third member 3 and the fourth member 4 (both as an example in the present embodiment) is: It is composed of a synthetic resin material. That is, in the present embodiment, the third member 3 and the fourth member 4 are interposed between the first member 1 and the second member 2, and the third elastic member 7 expands and contracts (torque due to the expansion and contraction). It functions as an intermediate member related to fluctuation mitigation). The third member 3 and the fourth member 4 prevent the first member 1 and the second member 2 from sliding directly and rotate around the rotation center Ax by the damper portion 102. Friction members (sliding members, friction members) that provide sliding resistance during relative rotation of the first member 1, the second member 2, the third member 3, the fourth member 4, etc. , Functioning as a resistance member). Therefore, according to this embodiment, compared with the structure which has the intermediate member and the friction member separately, a structure is easy to be simplified more.

  Moreover, in the support structure 9 which has the protrusion part 33 (convex part) provided in the 3rd member 3 and the protrusion part 42 provided in the 4th member 4 as shown in FIG. An opening 44 (concave portion) is provided in the protruding portion 42 formed in a C shape with a line of sight in the axial direction. The protrusion 33 is inserted into the opening 44. And as FIG. 9 shows, the opening part 44 contains the opening edge part 44a, the 1st part 44b, and the 2nd part 44c. The opening end 44 a is an end of the opening 44 on the wall 32 side of the third member 3. The first portion 44b is located adjacent to the open end 44a. The second portion 44c is located farther from the opening end portion 44a than the first portion 44b (on the side opposite to the opening end portion 44a of the first portion 44b). The width W2 in the circumferential direction (or tangential direction) of the second portion 44c is smaller (narrow) than the width W1 in the circumferential direction (or tangential direction) of the first portion 44b. In addition, an inclined portion 44d whose width gradually changes is provided between the first portion 44b and the second portion 44c. With such a configuration, the stress generated at the corner 44e (see FIGS. 4 and 9) of the opening 44 and the root of the protrusion 42 due to the contact between the protrusion 33 and the tip of the protrusion 42 is suppressed. Easy to be.

  As shown in FIG. 3, a fourth elastic member 8 is interposed between the wall portion 12 of the first member 1 and the second member 2. The fourth elastic member 8 has the second member 2 away from the wall portion 12 of the first member 1 relative to the wall portion 11 of the first member 1, that is, the wall of the first member 1. It is elastically pressed against the part 11 side. Thereby, sliding resistance can be given between the wall 11 and the third member 3. The fourth elastic member 8 is, for example, an annular (cylindrical) plate spring (a disc spring or a cone spring) made of a metal material.

  Next, with reference to FIGS. 10 to 15, the first elastic member together with the relative rotation state of the first member 1, the second member 2, the third member 3, and the fourth member 4. 5 and the relaxation of torque fluctuation due to elastic expansion and contraction of the third elastic member 7 will be described. FIG. 10 shows a state where there is no torque difference between the first member 1 and the second member 2.

  FIG. 11 shows a state in which the second member 2 is rotated by a predetermined angle in the counterclockwise direction with respect to the first member 1 from the state of FIG. Between the state of FIG. 10 and the state of FIG. 11, the second member 2, the third member 3 and the fourth member 4 (however, the fourth member 4 is not shown in FIGS. 10 to 15). The third elastic member 7 is elastically contracted. Between the state of FIG. 10 and the state of FIG. 11, the first elastic member 5 does not shrink.

  FIG. 12 shows a state in which the second member 2 is further rotated in the counterclockwise direction with respect to the first member 1 than in the state of FIG. 11. Between the state of FIG. 11 and the state of FIG. 12, the first elastic member 5 is between the first member 1 and the second member 2 and between the third member 3 and the fourth member 4. Shrinks. Between the state of FIG. 11 and the state of FIG. 12, since the 2nd member 2, the 3rd member 3, and the 4th member 4 rotate integrally in the counterclockwise direction, the 3rd elasticity The member 7 is maintained in the contracted state in FIG. 11 and is not further contracted.

  FIG. 13 shows a state in which the second member 2 is rotated by a predetermined angle in the clockwise direction with respect to the first member 1 from the state of FIG. Between the state of FIG. 10 and the state of FIG. 13, the third elastic member 7 is elastically contracted between the second member 2, the third member 3, and the fourth member 4. Between the state of FIG. 10 and the state of FIG. 13, the first elastic member 5 does not shrink.

  FIG. 14 shows a state in which the second member 2 is further rotated in the clockwise direction with respect to the first member 1 than in the state of FIG. 13. Between the state of FIG. 13 and the state of FIG. 14, the first member 1 and the second member 2, and the third member 3 and the fourth member 4 are positioned on the left and right of FIG. 14. The first elastic member 5 thus made contracts. The first elastic member 5 positioned above and below in FIG. 14 has an opening 22a of the second member 2 wide in the circumferential direction, and an edge of the opening 22a is an end in the circumferential direction of the first elastic member 5. Because it does not abut (do not press) the part, it does not shrink. Between the state of FIG. 13 and the state of FIG. 14, the second member 2, the third member 3, and the fourth member 4 rotate integrally in the clockwise direction, so that the third elastic member 7 is maintained in the contracted state in FIG. 13 and is not further contracted.

  Thus, in this embodiment, while the 3rd member 3 and the 4th member 4 function as a member which elastically expands / contracts the 1st elastic member 5 or the 3rd elastic member 7, a friction member ( It also functions as a sliding member.

  As described above, in the present embodiment, as an example, the third member 4 and the fourth member 4 that rotate integrally with each other while being pushed in the axially separated direction by the second elastic member 6 are provided. The first member 1 or the second member 2 is configured as a member that generates a frictional resistance. Therefore, according to the present embodiment, as an example, the configuration is easily simplified. Therefore, compared with a conventional equivalent performance product, for example, it is easy to obtain effects such as a reduction in the number of parts, a reduction in size, and a reduction in weight.

  In the present embodiment, as an example, at least one of the third member 3 and the fourth member 4 is made of a synthetic resin material. Therefore, as an example, the configuration can be simplified more easily than in the case where the synthetic resin material friction member is provided separately.

  In the present embodiment, as an example, a third member that elastically expands and contracts with relative rotation around the rotation center Ax between the second member 2, the third member 3, and the fourth member 4. The elastic member 7 is further provided. Therefore, as an example, it is easy to obtain a configuration in which the third elastic member 7 expands and contracts around the rotation center Ax by using the third member 3 and the fourth member 4 that rotate integrally with each other.

  As described above, in the present embodiment, as an example, the second elastic member 6 is an annular disc spring. Therefore, as an example, the damper device 100 is easily thinned in the axial direction.

  In the present embodiment, as an example, surfaces 33a and 33b (first surface) provided on the third member 3 and extending in the axial direction while intersecting the circumferential direction and surfaces provided on the fourth member 4 are provided. 33a, 33b and the surfaces 42a, 42b (second surface), which are positioned closer to the rotation center Ax than the second elastic member 6, and the third member 4 and the fourth member 4 are A support structure 9 is further provided that supports the shaft so as to be movable in the axial direction and integrally supports the circumferential direction. Therefore, as an example, the support structure 9 can be laid out more efficiently in the damper device 100.

  Moreover, in this embodiment, the support structure 9 has a support part which suppresses the movement of the 2nd elastic member 6 as an example. Therefore, as an example, the configuration is more easily simplified than the configuration in which the support portion that suppresses the movement of the second elastic member 6 is provided separately from the support structure 9.

  In the present embodiment, as an example, the support structure 9 includes an opening 44 (concave portion) provided in one of the third member 3 and the fourth member 4 and a protruding portion 42 (provided in the other). The opening 44 includes an opening end 44a, a first portion 44b having a first width W1 along the circumferential direction adjacent to the opening end 44a, and the first And a second portion 44c having a second width W2 that is positioned farther from the opening end portion 44a than the portion 44b and that is narrower than the first width W1 in the circumferential direction. Therefore, as an example, local stress concentration hardly occurs in the vicinity of the opening 44.

  In the present embodiment, as an example, a fourth elastic member that is positioned between the first member 1 and the second member 2 and elastically presses the second member 2 and the third member 3. 8 is further provided. Therefore, as an example, a relatively large friction force between one of the third member 4 and the fourth member 4 and the second member 2 can be easily obtained with a relatively simple configuration.

  As mentioned above, although embodiment of this invention was illustrated, the said embodiment is an example to the last, Comprising: It 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. In addition, the specifications (structure, type, direction, shape, size, length, width, thickness, height, number, arrangement, position, material, etc.) of each configuration, shape, etc. are appropriately changed. Can be implemented.

  DESCRIPTION OF SYMBOLS 1 ... 1st member, 2 ... 2nd member, 3 ... 3rd member, 4 ... 4th member, 5 ... 1st elastic member, 6 ... 2nd elastic member, 7 ... 3rd elasticity Member: 8 ... Fourth elastic member, 9 ... Support structure, 11 ... Wall part (first wall part or second wall part), 12 ... Wall part (second wall part or first wall part) 33 ... Projection (projection), 33a, 33b ... surface (first surface), 42 ... Projection (support), 42a, 42b ... surface (second surface), 43 ... Projection (support) ), 44... Opening (concave portion), 44 a... Opening end portion, 44 b... First portion, 44 c... Second portion, 100 ... Damper device, Ax. The width of the second.

Claims (8)

A first member having a first wall portion and a second wall portion having portions spaced apart from each other in the axial direction of the rotation center, and rotating around the rotation center;
A second member that is positioned between the first wall and the second wall and rotates about the rotation center;
A first elastic member that elastically expands and contracts with relative rotation around the rotation center of the first member and the second member;
Having a portion positioned between the first wall and the second member, rotating about the rotation center, and between at least one of the first member and the second member A third member that produces frictional resistance when rotated relatively at
A portion positioned between the second wall portion and the second member, and rotates integrally around the third member and the rotation center, and the third member and the rotation center; A fourth member that is configured to be relatively movable in the axial direction of the first member and a friction member that generates a frictional resistance when relatively rotating between at least one of the first member and the second member;
A second elastic member for applying an elastic force in a direction in which the third member and the fourth member are separated from each other in the axial direction;
Damper device with   The damper device according to claim 1, wherein at least one of the third member and the fourth member is made of a synthetic resin material.   A third elastic member that elastically expands and contracts with relative rotation of the second member, the third member, and the fourth member about the rotation center is further provided. The damper device according to 1 or 2.   The damper device according to any one of claims 1 to 3, wherein the second elastic member is an annular disc spring.   A first surface provided on the third member and intersecting the circumferential direction of the rotation center and extending in the axial direction; and a second surface provided on the fourth member and facing the first surface. The third member and the fourth member are movably supported in the axial direction and are integrally supported in the circumferential direction. The damper device according to claim 4, further comprising a supporting structure.   The damper device according to claim 5, wherein the support structure includes a support portion that suppresses movement of the disc spring. The support structure includes a concave portion provided in one of the third member and the fourth member, and a convex portion provided in the other,
The recess has an opening end, a first portion having a first width along the circumferential direction adjacent to the opening end, and a distance from the opening end than the first portion. The damper device according to claim 5, further comprising: a second portion that is positioned and has a second width along the circumferential direction that is narrower than the first width.   4. A fourth elastic member that is positioned between the first member and the second member and elastically presses the second member and the third member, further comprising: The damper device according to any one of 7.

Images