JP2016008713A - Damper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a damper device having a constitution which can reduce torque inputted into a low-torque side when a limiter part functions.SOLUTION: A first limiter part 102A of a damper device 100 has a friction member 61 which is sandwiched between a wall part 42b of a cover 42 and a third rotating member 3, and when a torque difference between the wall part 42b and the third rotating member 3 reaches a prescribed value or higher, the friction member 61 slides with at least either of the wall part 42b and the third rotating member 3, and the third rotating member 3 and an intermediate member 4 relatively rotate. A second limiter part 102B has a friction member 63 which is sandwiched between a wall part 43a of a pressure plate 43 and a second rotating member 2, and when a torque difference between the wall part 43a and the second rotating member 2 reaches a prescribed value or higher, the friction member 63 slides with at least either of the wall part 43a and the second rotating member 2, and the second rotating member 2 and the intermediate member 4 relatively rotate.

Description

  The present invention relates to a damper device.

  Conventionally, the first rotating member, the second rotating member, and the third rotating member that can rotate around the center of rotation, and elasticity according to the relative rotation of the first rotating member and the second rotating member. The second rotation member and the third rotation when the difference in torque between the elastic member and the second rotation member and the third rotation member, which are elastically contracted and relieved in torque, exceeds a predetermined value A damper device including a limiter unit that relatively rotates a member is known.

JP 2012-193773 A

  In the conventional damper device, for example, the torque of the third rotating member is larger than the torque of the second rotating member, the limiter unit functions and the second rotating member and the third rotating member are relatively In some cases, some torque may be input from the second rotating member to the first rotating member. In this type of damper device, for example, it is preferable if a configuration capable of reducing the torque input to the low torque side when the limiter unit functions is 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 about the rotation center, a third rotation member that can rotate about the rotation center, and a rotation member that is rotatable about the rotation center. A first mounting portion that overlaps at least a part of the three rotating members and the axial direction of the rotation center, and a second mounting portion that overlaps at least a part of the second rotating member and the axial direction. An intermediate member, a first friction member sandwiched between the first attachment portion and the third rotation member, and the first attachment portion and the third rotation member. When the torque difference between the first friction member and the first friction member exceeds a predetermined value, the first friction member is And a first limiter configured to slide with at least one of the third rotating members and to rotate the third rotating member and the intermediate member relative to each other around the rotation center; and A second friction member sandwiched between the second mounting portion and the second rotating member; and a torque difference between the second mounting portion and the second rotating member is a predetermined value. In this case, the second friction member slides with at least one of the second attachment portion and the second rotation member, and the second rotation member and the intermediate member are in the center of rotation. A second limiter configured to rotate relatively around. That is, in the damper device according to the embodiment, the intermediate member is provided between the second rotating member and the third rotating member via the first limiter portion and the second limiter portion. Therefore, for example, the size of the second rotating member and the inertia torque can be further reduced. Thereby, the torque input from the second rotating member to the first rotating member side (low torque side) can be further reduced. Further, for example, the torque (variation) input to the first rotating member side can be further reduced by the plurality of limiter units.

  In the damper device, for example, at least a part of the second friction member and the elastic member are positioned so as to overlap in the radial direction of the rotation center. Therefore, for example, the size of the second rotating member, and hence the inertia torque, can be reduced as compared with the case where the second friction member and the elastic member are displaced in the axial direction without overlapping in the radial direction. Thereby, the torque input from the 2nd rotation member to the 1st rotation member side can be made smaller.

  In the damper device, for example, the first attachment portion and the second attachment portion are positioned more radially outside the rotation center than the first friction member and the second friction member. Connected through the connected portion. Therefore, the second rotating member can be arranged on the inner side in the radial direction than the intermediate member, and the size of the second rotating member and the inertia torque can be further reduced. Thereby, the torque input from the 2nd rotation member to the 1st rotation member side can be made smaller.

  In the damper device, for example, the damper member is interposed between the first rotating member and the intermediate member, slides with at least one of the first rotating member and the intermediate member, and the intermediate member. Including a first support member that rotatably supports the rotation center. Therefore, the configuration in which the intermediate member is provided to be rotatable around the rotation center can be realized as a relatively simple configuration including the first support member.

  In the damper device, for example, the damper member is interposed between the second rotating member and the intermediate member, slides with at least one of the second rotating member and the intermediate member, and the intermediate member. Is provided with a second support member that rotatably supports the rotation center. Therefore, the structure in which the intermediate member is provided to be rotatable around the rotation center can be realized as a relatively simple structure including the second support member.

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 explanatory view showing a state in which the second rotating member of the damper device according to the first embodiment and the protruding portion of the first rotating member are separated from each other. FIG. 5 is an exemplary explanatory view of a state in which the second rotating member of the damper device according to the first embodiment and the protruding portion of the first rotating member are in contact with each other. FIG. 6 is an exemplary cross-sectional view of the damper device according to the second 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 (temporarily store) 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. In the present 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 axial. The other side.

  The damper device 100 rotates around the rotation center Ax. As shown in FIGS. 1-3, the damper apparatus 100 is comprised by the flat disk shape 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 inside the limiter part 102 in the radial direction. 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 fluctuations, and the limiter unit 102 blocks transmission of excessive torque between the damper unit 101 and the output side (transmission input shaft S2).

  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). Further, the second rotating member 2 is positioned on the inner side in the radial direction at the central portion in the axial direction (wall portion 21c of the driven plate 21) and on the other side in the axial direction on the outer side in the radial direction. Part (wall part 21b of the driven plate 21). 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 output shaft S1 side), and the wall 21b of the driven plate 21 of the second rotating member 2 is connected to the output side (transmission input shaft S2). Side, connected to the third rotating member 3). The elastic member 6 is located between the side plates 13 and 14 of the first rotating member 1 and the wall 21c of 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 drive plate 12 is positioned on the radially outer side of the first rotating member 1, and the side plates 13 and 14 are positioned on the radially inner side of the drive plate 12.

  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. 4, the drive plate 12 includes an annular base portion 15 and a plurality of (for example, four) protrusion portions 16 that protrude from the base portion 15 toward the radially inner side (rotation center Ax side). Have. 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. 4 and 5, only one of the plurality of protrusions 16 is shown, but in reality, four protrusions 16 are provided every 90 ° around the rotation center Ax. The protrusion 16 is provided with an opening 16a through which the coupler C1 is passed together with the openings 13b and 14b (see FIG. 3) of the side plates 13 and 14. The drive plate 12 and the side plates 13 and 14 are integrally coupled 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. As shown in FIG. 2, the first rotating member 1 is coupled (integrally) to a flywheel FW (mass body, inertial body) by a coupling tool C2 (for example, a bolt or a screw) passed through the opening 15a. Has been). In the present embodiment, the first rotating member 1 is coupled to the engine output shaft S1 via the flywheel FW and rotates integrally with the output shaft S1. 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.

  The second rotating member 2 has a driven plate 21 (member). 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. As shown in FIG. 4, the wall portion 21 b is a radially outer portion of the driven plate 21, and has an annular shape that extends in the radial direction so as to cross the rotation center Ax (for example, substantially orthogonally). It is configured in a plate shape. The cylindrical part 21a is located inside the wall part 21b in the radial direction. The wall portion 21c is positioned inward of the cylindrical portion 21a in the radial direction, and has a plate shape that extends in the radial direction so as to cross the rotation center Ax (for example, substantially orthogonal).

  As shown in FIG. 2, the wall portion 21 b is positioned so as to be separated from the other axial side of the drive plate 12 (the right side in FIG. 2). The cylindrical portion 21a projects obliquely from the radially inner edge of the wall portion 21b toward the radially inner side and the one axial side (the left side in FIG. 2) to form a conical wall portion. doing. As illustrated on the lower side of the rotation center Ax in FIG. 2, the cylindrical portion 21 a passes through the opening 17 (see also FIGS. 1 and 4) provided in the drive plate 12. The wall portion 21c extends radially inward from an end portion on one side (left side in FIG. 2) of the cylindrical portion 21a in the axial direction. As shown in FIG. 2, the wall portion 21 c is located between the side plate 13 and the side plate 14.

  As shown in FIG. 4, a plurality of openings 25 are provided at intervals in the circumferential direction on the inner side in the radial direction than the wall portion 21 b and the tubular portion 21 a of the driven plate 21. The opening 25 is configured as, for example, a through-hole penetrating the wall portion 21c along the axial direction, that is, the direction perpendicular to the paper surface of FIG. The opening 25 includes openings 25a, 25b, and 25e. The opening 25a is located in the radial intermediate portion of the opening 25, the opening 25b is located radially outside the opening 25a, and the opening 25e is more radial than the opening 25a. Located inside.

  As shown in FIG. 3, the opening 25b is provided across the wall 21c and at least a part of the tubular portion 21a. As shown in FIG. 4, the protrusion 16 of the drive plate 12 is inserted into the opening 25b. In the opening 25a, an elastic member 6 (see FIGS. 1 to 3) in an initial state (set state) is disposed across an edge on one side and an edge on the other side in the circumferential direction. As shown in FIG. 3, the opening 25 a overlaps the openings 13 a and 14 a of the side plates 13 and 14 in the axial direction. Moreover, as shown in FIGS. 4 and 5, the opening 25 e is configured as, for example, a long hole in which the coupler C <b> 3 (see FIG. 3) is caught in the circumferential direction. The second rotating member 2, that is, the driven plate 21, can be made of, for example, a metal material.

  Further, as shown in FIG. 3, an interposition member 8 is provided inside the driven plate 21 in the radial direction. In the present embodiment, the second rotating member 2 is supported and positioned by the third rotating member 3 via the interposed member 8 in the radial direction. In other words, the interposition member 8 supports the driven plate 21 of the second rotating member 2 so as to be rotatable in a predetermined posture. The interposition member 8 can also be called a bearing member or a sliding member. The interposed member 8 is made of, for example, a synthetic resin material.

  The elastic member 6 (first elastic member) shown in FIGS. 1 to 3 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 25a that are axially overlapped with each other. 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 25a 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 25a 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 25a 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 extends along a substantially circumferential direction (substantially tangential direction) with relative rotation around the rotation center Ax. And 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 FIGS. 4 and 5, the protruding portion 16 of the drive plate 12 is configured to be able to contact the inner end face of the opening 25 b of the driven plate 21. Specifically, the circumferential end surface of the opening 25b includes a facing region 25c (edge) that faces the circumferential end 16c of the protruding portion 16 in the circumferential direction. The end portions 16c (both end portions) are configured to be able to contact each other. Further, the end portion 16c of the protruding portion 16 and the facing region 25c of the opening portion 25b contact each other when the first rotating member 1 and the second rotating member 2 rotate relatively around the rotation center Ax. It is configured to touch. That is, relative rotation about the rotation center Ax between the first rotating member 1 and the second rotating member 2 is determined by the end portion 16c of the protruding portion 16 and the end surface (opposing region 25c) inside the opening portion 25b. The range is limited. Therefore, according to the present embodiment, for example, the compression amount of the elastic member 6 can be limited. Therefore, for example, since it can suppress that the compression amount of the elastic member 6 exceeds a regulation value (allowable value), the fall of durability of the elastic member 6 is easy to be suppressed. Thus, in the present embodiment, the protrusion 16 of the drive plate 12 and the opposed region 25c of the opening 25b of the driven plate 21 are around the rotation center Ax between the first rotating member 1 and the second rotating member 2. It functions as a stopper that limits the range of relative rotation of the.

  Further, as shown below the elastic member 6 in FIG. 3, a fifth rotating member 5 is provided between the side plates 13 and 14 and the driven plate 21. The fifth rotating member 5 has a plurality (for example, two) of control plates 51 and 52 (members). The control plate 51 (first control plate) is spaced apart from one side (left side in FIG. 3) of the control plate 52 (second control plate) in the axial direction. The control plates 51 and 52 are each configured in an annular and plate shape that expands in the radial direction, and are coupled (integrated) to each other via a coupler C3 (for example, a rivet) that penetrates the opening 25e in the axial direction. Has been. In the present embodiment, the range of relative rotation around the rotation center Ax between the second rotating member 2 and the fifth rotating member 5 is caused by the contact between the coupler C3 and the circumferential end surface of the opening 25e. Is limited.

  Sliding members 7 and 9 are provided between the side plates 13 and 14 and the control plates 51 and 52, respectively. The sliding member 7 (first sliding member) and the sliding member 9 (second sliding member) are made of, for example, a synthetic resin material. 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 fifth rotating member 5) rotate relatively around the rotation center Ax. ) Can reduce vibration and noise. In the present embodiment, the sliding members 7 and 9 are also located inside the side plates 13 and 14 in the radial direction, and are interposed between the first rotating member 1 and the third rotating member 3. Yes. The first rotating member 1 is supported and positioned in the radial direction by the third rotating member 3 via the sliding members 7 and 9. The sliding members 7 and 9 support the side plates 13 and 14, that is, the first rotating member 1 so as to be rotatable in a predetermined posture. Thus, the sliding members 7 and 9 can also function as bearing members.

  As shown in FIG. 3, the limiter unit 102 includes a cover 42 (member), a friction member 61, and a lining plate 32 from the other side in the axial direction (right side in FIG. 3) toward one side (left side in FIG. 3). (Third rotating member 3), friction member 62, driven plate 21 (second rotating member 2), friction member 63, pressure plate 43 (member), elastic member 65, and support plate 41 (member). The cover 42, the friction member 61, the lining plate 32, the friction member 62, the driven plate 21, the friction member 63, the pressure plate 43, the elastic member 65, and the support plate 41 are overlapped in close contact with each other in the axial direction. In the present embodiment, the support plate 41, the cover 42, and the pressure plate 43 are examples of components of the intermediate member 4 (fourth rotating member). The intermediate member 4 and the elastic member 65 sandwich the friction member 61, the lining plate 32, the friction member 62, the driven plate 21, and the friction member 63 in the axial direction in a state where the friction member 61 wraps around from the outside in the radial direction, and elastically press the intermediate member 4 and the elastic member 65. ing.

  The third rotating member 3 includes a hub member 31 and a lining plate 32. The hub member 31 is positioned on the radially inner side of the third rotating member 3, and the lining plate 32 is positioned on the radially outer side of the hub member 31.

  The hub member 31 includes a cylindrical tubular portion 33 and a wall portion 34 that protrudes outward from the tubular portion 33 in the radial direction. The cylindrical portion 33 is provided so as to surround the input shaft S2 (shaft) of the transmission. The cylindrical portion 33 is coupled to the input shaft S2 by press fitting, spline coupling, or the like, and rotates integrally with the input shaft S2. The wall portion 34 protrudes outward in the radial direction from the end portion on the other axial side (right side in FIG. 3) of the cylindrical portion 33. The wall portion 34 is formed in an annular and plate shape that spreads across the rotation center Ax (for example, substantially orthogonal). The wall portion 34 is positioned so as to be separated from the other side (right side in FIG. 3) of the elastic member 6 in the axial direction.

  The lining plate 32 extends outward from the wall 34 in the radial direction. The lining plate 32 is formed in an annular and plate shape spreading in the radial direction. The lining plate 32 and the wall portion 34 of the hub member 31 are coupled (integrated) to each other by a coupler C4 (for example, a rivet) passed through the respective openings 32a and 34a. Therefore, the lining plate 32 rotates integrally with the hub member 31. As shown in FIG. 3, the outer edge 32 b (peripheral edge) in the radial direction of the lining plate 32 is positioned between the wall 21 b of the driven plate 21 and the wall 42 b of the cover 42. The third rotating member 3, that is, the hub member 31 and the lining plate 32 can be made of, for example, a metal material.

  The support plate 41 that is a part of the intermediate member 4 is positioned on one side of the intermediate member 4 in the axial direction (left side in FIG. 3), and the cover 42 that is a part of the intermediate member 4 is the shaft of the support plate 41. The pressure plate 43, which is located on the other side of the direction (the right side in FIG. 3) and is a part of the intermediate member 4, is located between the support plate 41 and the cover 42.

  As shown in FIG. 3, the support plate 41 includes a cylindrical tubular portion 41 a and a wall projecting radially outward from an end portion on the other axial side (right side in FIG. 3) of the tubular portion 41 a. A portion 41b, and a wall portion 41c projecting radially inward from an end portion on one side (left side in FIG. 3) of the tubular portion 41a in the axial direction. The tubular portion 41a is positioned so as to be separated from the radial direction of the driven plate 21 (friction members 61 to 63). Each of the wall portions 41b and 41c is formed in an annular plate shape that extends in the radial direction so as to cross the rotation center Ax (for example, substantially orthogonally). The wall 41c is provided with a plurality of openings 41e at intervals in the circumferential direction.

  The cover 42 includes a wall portion 42a that is overlapped with the wall portion 41b of the support plate 41 in the axial direction, and a radially inner edge of the wall portion 42a from the other axial side (the right side in FIG. 3) and the radial direction. Wall portion 42b protruding inward. Each of the wall portions 42a and 42b 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 41b of the support plate 41 and the wall 42a of the cover 42 are coupled (integrated) to each other by, for example, welding or screw coupling. Further, the wall portion 42b is spaced apart from the other axial side of the lining plate 32 (the right side in FIG. 3) and overlaps the edge portion 32b of the lining plate 32 in the axial direction.

  The pressure plate 43 projects from the annular wall 43a and the radially outer edge of the wall 43a toward one side in the axial direction (left side in FIG. 3, the wall 41c side of the support plate 41). A plurality of protrusions 43b. The wall portion 43a is spaced apart from one side (left side in FIG. 3) of the driven plate 21 in the axial direction and overlaps the wall portion 21b of the driven plate 21 in the axial direction. Moreover, the some protrusion part 43b is provided in the circumferential direction of the wall part 43a at intervals. The plurality of protrusions 43b are inserted into the plurality of openings 41e provided on the wall 41c, respectively. The protrusion 43b and the edge of the opening 41e are hooked to each other in the circumferential direction. Therefore, the pressure plate 43 rotates integrally with the support plate 41 and the cover 42 around the rotation center Ax. The intermediate member 4, that is, the support plate 41, the cover 42, and the pressure plate 43 can be made of, for example, a metal material. In the present embodiment, the wall portion 42b of the cover 42 is an example of a first attachment portion, the wall portion 43a of the pressure plate 43 is an example of a second attachment portion, and the cylindrical shape of the support plate 41 The part 41a is an example of a connection part.

  In the present embodiment, as shown in FIG. 3, the friction member 61 is positioned between the wall 42 b of the cover 42 and the edge 32 b of the lining plate 32, and the wall 21 b of the driven plate 21 and the pressure plate The friction member 63 is positioned between the wall portions 43a of 43. Further, the friction member 62 is positioned between the edge portion 32 b of the lining plate 32 and the wall portion 21 b of the driven plate 21. Each of the friction members 61 to 63 is configured in an annular and plate shape that crosses the rotation center Ax (for example, substantially orthogonal) and expands in the radial direction. The friction members 61 to 63 can be made of, for example, a synthetic resin material containing glass fiber material or synthetic rubber. Further, as shown in FIG. 3, the friction member 63 is positioned so that at least a portion thereof overlaps the elastic member 6 in the radial direction. In the present embodiment, the friction member 61 is an example of a first friction member, the friction member 63 is an example of a second friction member, and the friction member 62 is an example of a third friction member. is there.

  As shown in FIG. 3, the elastic member 65 (second elastic member) is positioned between the wall portion 41 c of the support plate 41 and the wall portion 43 a of the pressure plate 43 that overlap in the axial direction, and the wall portion 41 c. And the elastic force of the direction which mutually spaces apart in the axial direction is given to the wall part 43a. Further, the elastic member 65 overlaps the sliding surfaces (friction surfaces) of the friction members 61 to 63 in the axial direction. The elastic member 65 covers the wall 43a of the pressure plate 43 with the friction member 63, the wall 21b of the driven plate 21, the friction member 62, the edge 32b of the lining plate 32, and the friction member 61 interposed therebetween. 42 is pressed against the wall 42b. That is, a frictional force is generated between the friction member 63 and each of the wall portion 43a and the wall portion 21b by the load due to the elastic force of the elastic member 65, and friction is generated between the friction member 61 and each of the edge portion 32b and the wall portion 42b. There is power. Further, a frictional force is generated between the friction member 62 and each of the wall portion 21b and the edge portion 32b. The elastic member 65 can be constituted by, for example, an annular (cylindrical) leaf spring (a disc spring, a cone spring) made of a metal material.

  In the limiter unit 102, there is a torque difference between the damper unit 101 (the first rotating member 1 and the second rotating member 2) and the side of the limiter unit 102 opposite to the damper unit 101 (the third rotating member 3 side). In the state smaller than the threshold value within the set range (within the allowable range), the limiter unit 102 does not slip due to the elastic pressing force of the elastic member 65, and the damper device 100 including the damper unit 101 and the limiter unit 102 is integrated. Rotate. In other words, in a state where the torque difference between the damper portion 101 and the limiter portion 102 opposite to the damper portion 101 is larger than the threshold value, the limiter portion 102 causes a frictional force (maximum stationary) due to the elastic pressing force of the elastic member 65. Slip exceeding (frictional force) occurs. The limiter unit 102 thus functions as a torque limiter, and excessive torque transmission exceeding the set value is suppressed.

  Here, in this embodiment, the limiter unit 102 includes a first limiter unit 102A having a friction member 61 (first friction member) and a second unit having a friction member 63 (second friction member). It has a limiter portion 102B and a third limiter portion 102C having a friction member 62 (third friction member). In the limiter unit 102 of the present embodiment, the first limiter unit 102A and the second limiter unit 102B are provided in series, and the first limiter unit 102A and the second limiter unit 102B provided in series, A third limiter unit 102C is provided in parallel. The first limiter unit 102A and the second limiter unit 102B can operate in parallel with the third limiter unit 102C depending on the setting torque (threshold torque, slip torque). In this case, it can be considered that the third limiter unit 102C constitutes a part of one of the first limiter unit 102A and the second limiter unit 102B. In the present embodiment, for example, the first limiter unit 102A and the third limiter unit 102C are configured to slide in parallel, that is, the third limiter unit 102C functions as the first limiter unit 102A. The

  Specifically, the first limiter portion 102A is, for example, when the torque difference between the wall portion 42b of the cover 42 and the edge portion 32b of the lining plate 32 is equal to or greater than a predetermined value (elasticity of the elastic member 65). When the frictional force due to the pressing force is exceeded, the friction member 61 slides on at least one of the wall portion 42b and the edge portion 32b, and the third rotating member 3 and the intermediate member 4 (and the second rotating member 2). ) And can relatively rotate (slide).

  The second limiter portion 102B is, for example, when the torque difference between the wall portion 21b of the driven plate 21 and the wall portion 43a of the pressure plate 43 is equal to or greater than a predetermined value (the elastic pushing force of the elastic member 65). The friction member 63 slides on at least one of the wall portion 21b and the wall portion 43a, and the second rotating member 2 and the intermediate member 4 (and the third rotating member 3). And can relatively rotate (slide).

  The third limiter portion 102C is, for example, when the torque difference between the wall portion 21b of the driven plate 21 and the edge portion 32b of the lining plate 32 exceeds a predetermined value (the elastic pushing force of the elastic member 65). The friction member 62 slides on at least one of the wall portion 21b and the edge portion 32b, and the second rotating member 2 (and the intermediate member 4) and the third rotating member 3). And can relatively rotate (slide).

  The set torque of the first limiter unit 102A, the second limiter unit 102B, and the third limiter unit 102C is appropriately determined depending on, for example, the material of the friction members 61 to 63, the surface roughness, and the contact area setting. Can be adjusted. In this embodiment, for example, when the torque difference between the second rotating member 2 and the third rotating member 3 exceeds the frictional force due to the elastic pressing force of the elastic member 65, the first limiter unit 102A and the third limiter unit 102C are configured to operate (slide) before the second limiter unit 102B. In the configuration without the intermediate member 4, the wall portion 21b of the driven plate 21 needs to extend to the outer side in the radial direction of the edge portion 32b of the lining plate 32 and to the other side in the axial direction (the right side in FIG. 3). There is a possibility that the second rotating member 2 becomes large and the torque input from the second rotating member 2 to the first rotating member 1 side becomes large. In this regard, according to the present embodiment, the first limiter portion 102A, the second limiter portion 102B, and the third limiter portion 102C are provided between the second rotating member 2 and the third rotating member 3. Thus, since the intermediate member 4 is provided, the size of the second rotating member 2 and, consequently, the inertia torque can be further reduced. Therefore, for example, the torque input from the second rotating member 2 to the first rotating member 1 side tends to be smaller. In addition, since the first limiter unit 102A, the second limiter unit 102B, and the third limiter unit 102C are provided, the first limiter unit 102A, the second limiter unit 102B, and the third limiter unit 102C are provided. By sliding in series or in parallel, the torque tends to be gradually attenuated. Therefore, for example, the torque (variation) input to the first rotating member 1 side tends to be smaller.

  As shown in FIG. 3, a support member 10 interposed between the first rotating member 1 and the intermediate member 4 is provided on the radially inner side of the wall portion 41 c of the support plate 41. The support member 10 includes a cylindrical tubular portion 10a, and a wall portion 10b that protrudes radially outward from an end portion on one side (left side in FIG. 3) of the tubular portion 10a in the axial direction. The cylindrical portion 10 a is located between the radially inner edge of the wall portion 41 c and the protruding portion 16 of the drive plate 12. The wall portion 10b is located between the wall portion 41c and the base portion 15 of the drive plate 12, and is formed in an annular and plate shape that expands in the radial direction. In the present embodiment, the support plate 41 (intermediate member 4) is supported and positioned by the drive plate 12 (first rotating member 1) via the support member 10 in the radial direction. That is, the support member 10 slides with at least one of the first rotating member 1 and the intermediate member 4 when the first rotating member 1 and the intermediate member 4 are relatively rotated, and the intermediate member 4 is rotatably supported. The support member 10 can also be referred to as a bearing member or a sliding member. The support member 10 is made of, for example, a synthetic resin material. In the present embodiment, the support member 10 is an example of a first support member.

  As described above, in the present embodiment, for example, the torque difference between the wall portion 42b (first mounting portion) of the cover 24 and the lining plate 32 (third rotating member 3) is a predetermined value or more. In this case, the friction member 61 (first friction member) slides on at least one of the wall portion 42b and the lining plate 32 so that the third rotating member 3 and the intermediate member 4 rotate relative to each other. When the torque difference between the first limiter portion 102A, the wall portion 43a (second mounting portion) of the pressure plate 43, and the driven plate 21 (second rotating member 2) becomes a predetermined value or more. The second friction member 63 (second friction member) is configured to slide relative to at least one of the wall portion 43a and the driven plate 21 so that the second rotating member 2 and the intermediate member 4 rotate relatively. Second limit It includes a section 102B, a. That is, in the present embodiment, the intermediate member 4 is provided between the second rotating member 2 and the third rotating member 3 via the first limiter portion 102A and the second limiter portion 102B. Yes. Therefore, according to the present embodiment, for example, the size of the second rotating member 2 and the inertia torque can be further reduced. Thereby, the torque input from the 2nd rotation member 2 to the 1st rotation member 1 side (low torque side) can be made smaller. Further, for example, the torque (variation) input to the first rotating member 1 side can be further reduced by the first limiter unit 102A and the second limiter unit 102B.

  Further, in the present embodiment, for example, when the torque difference between the driven plate 21 (second rotating member 2) and the lining plate 32 (third rotating member 3) becomes a predetermined value or more, the friction member 62 is used. Includes a third limiter portion 102C configured to slide relative to at least one of the driven plate 21 and the lining plate 32 so that the second rotating member 2 and the third rotating member 3 rotate relative to each other. That is, in the present embodiment, the first limiter portion 102A, the second limiter portion 102B, and the third limiter portion 102C are interposed between the second rotating member 2 and the third rotating member 3. An intermediate member 4 is provided. Therefore, according to the present embodiment, for example, the torque (variation) input to the first rotating member 1 side by the first limiter unit 102A, the second limiter unit 102B, and the third limiter unit 102C. It can be made even smaller.

  In the present embodiment, for example, at least a part of the friction member 63 (second friction member) and the elastic member 6 are positioned so as to overlap in the radial direction of the rotation center Ax. In other words, a part of the second rotating member 2 is arranged so as to align with the elastic member 6 in the radial direction. For example, when the friction member 63 and the elastic member 6 are arranged so as to be largely displaced in the radial direction, the cylindrical portion 21a, the wall portion 21b, etc. extend away from the wall portion 21c in the axial direction, and the second rotation There is a possibility that the member 2 becomes large. In this respect, in the present embodiment, at least a part of the friction member 63 and the elastic member 6 are positioned so as to overlap in the radial direction of the rotation center Ax, and the axial displacement between the friction member 63 and the elastic member 6 is further reduced. Therefore, the size of the second rotating member 2 and, consequently, the inertia torque can be further reduced. Thereby, the torque input from the 2nd rotation member 2 to the 1st rotation member 1 side can be made smaller.

  Further, in the present embodiment, for example, the wall portion 42 b (first attachment portion) of the cover 42 and the wall portion 43 a (second attachment portion) of the pressure plate 43 are more radial than the friction members 61 and 63. It is connected via a cylindrical portion 41a (connecting portion) of the support plate 41 located on the outside. Therefore, according to this embodiment, the 2nd rotation member 2 can be arrange | positioned inside radial direction rather than the intermediate member 4, for example, and the magnitude | size of the 2nd rotation member 2, and also inertial torque can be made smaller. Thereby, the torque input from the 2nd rotation member 2 to the 1st rotation member 1 side can be made smaller.

  In the present embodiment, for example, the intermediate member 4 is interposed between the first rotating member 1 and the intermediate member 4 and slides with at least one of the first rotating member 1 and the intermediate member 4. Is provided with a support member 10 (first support member) that is rotatably supported around the rotation center Ax. Therefore, according to the present embodiment, the configuration in which the intermediate member 4 is provided to be rotatable around the rotation center Ax can be realized as a relatively simple configuration including the support member 10.

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 this embodiment, as shown in FIG. 6, a cylindrical support interposed between the second rotating member 2 and the intermediate member 4 inside the cylindrical portion 41 a of the support plate 41 in the radial direction. A member 10A is provided. In the present embodiment, the support plate 41 (intermediate member 4) is supported and positioned in the radial direction by the driven plate 21 (second rotating member 2) via the support member 10A. That is, the supporting member 10A slides with at least one of the second rotating member 2 and the intermediate member 4 when the second rotating member 2 and the intermediate member 4 are relatively rotated, and the intermediate member 4 is rotatably supported. The support member 10A can also be referred to as a bearing member or a sliding member. The supporting member 10A is made of, for example, a synthetic resin material. In the present embodiment, the support member 10A is an example of a second support member. Therefore, according to the present embodiment, the configuration in which the intermediate member 4 is provided to be rotatable around the rotation center Ax can be realized as a relatively simple configuration including the support member 10A.

  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. 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, 4 ... Intermediate member, 6 ... Elastic member, 10 ... Support member (1st support member), 10A ... Support member (Second support member), 41a ... cylindrical portion (connection portion), 42b ... wall portion (first attachment portion), 43a ... wall portion (second attachment portion), 61 ... friction member (first member) Friction member), 62 ... friction member (third friction member), 63 ... friction member (second friction member), 102A ... first limiter portion, 102B ... second limiter portion, Ax ... center of rotation.

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 third rotating member rotatable around the rotation center;
A first mounting portion configured to be rotatable about the rotation center, overlapping at least a part of the third rotation member and an axial direction of the rotation center, at least a part of the second rotation member, and the An intermediate member having a second attachment portion overlapping in the axial direction;
A first friction member sandwiched between the first attachment portion and the third rotation member, and a torque difference between the first attachment portion and the third rotation member is predetermined. When the value exceeds the value, the first friction member slides with at least one of the first attachment portion and the third rotation member, and the third rotation member and the intermediate member rotate with the rotation. A first limiter configured to rotate relative to the center;
A second friction member sandwiched between the second attachment portion and the second rotation member, and a torque difference between the second attachment portion and the second rotation member is predetermined. The second friction member slides with at least one of the second attachment portion and the second rotation member when the value exceeds the value, and the second rotation member and the intermediate member rotate with the rotation. A second limiter configured to rotate relative to the center;
A damper device comprising:   The damper device according to claim 1, wherein at least a part of the second friction member and the elastic member are positioned so as to overlap in a radial direction of the rotation center.   The first attachment portion and the second attachment portion are connected via a connection portion that is located on the radially outer side of the rotation center than the first friction member and the second friction member. The damper device according to claim 1 or 2.   Interposed between the first rotating member and the intermediate member, sliding with at least one of the first rotating member and the intermediate member, and capable of rotating the intermediate member around the rotation center The damper apparatus as described in any one of Claims 1-3 provided with the 1st supporting member to support.   It is interposed between the second rotating member and the intermediate member, slides with at least one of the second rotating member and the intermediate member, and allows the intermediate member to rotate about the rotation center. The damper apparatus as described in any one of Claims 1-4 provided with the 2nd supporting member to support.

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