Friction disc and damper device

Abstract

The invention provides a friction disc and a damper device capable of realizing low cost. The first friction piece is installed on the first side face of the supporting plate. The second friction piece is installed on the second side face of the supporting plate. The support plate has a first engagement protrusion, a first through-hole, a second engagement protrusion, and a second through-hole. The first engagement protrusion protrudes from the first side surface toward a first side in the axial direction. The first through hole extends in the axial direction within the first engagement protrusion. The second engagement protrusion protrudes from the second side surface toward a second side in the axial direction. The second through-hole extends in the axial direction within the second engagement protrusion. The first friction member has a first engagement recess that engages with the first engagement protrusion. The second friction member has a second engagement recess that engages with the second engagement protrusion.

Description

Technical Field

[0001] The present invention relates to a friction disk and a shock absorber device. Background Art

[0002] A shock absorber device or the like has a friction disk for frictional engagement. The friction disk has a support plate and a pair of friction members. The pair of friction members are fixed to the support plate by rivets and rotate integrally with the support plate.

[0003] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2020-169683

[0004] It is desired to achieve a low cost of the friction disk. Therefore, the technical problem of the present invention is to provide a friction disk capable of achieving a low cost. Summary of the Invention

[0005] The friction disk according to the first aspect includes a support plate, a first friction member, and a second friction member. The support plate has a first side surface and a second side surface. The first side surface faces the first side in the axial direction. The second side surface faces the second side in the axial direction. The first friction member is mounted on the first side surface of the support plate. The second friction member is mounted on the second side surface of the support plate. The support plate has a first engaging convex portion, a first through hole, a second engaging convex portion, and a second through hole. The first engaging convex portion projects from the first side surface toward the first side in the axial direction. The first through hole extends axially within the first engaging convex portion. The second engaging convex portion projects from the second side surface toward the second side in the axial direction. The second through hole extends axially within the second engaging convex portion. The first friction member has a first engaging concave portion that engages with the first engaging convex portion. The second friction member has a second engaging concave portion that engages with the second engaging convex portion.

[0006] According to this configuration, by engaging the first engaging convex portion with the first engaging concave portion, the first friction member can rotate integrally with the support plate. Similarly, by engaging the second engaging convex portion with the second engaging concave portion, the second friction member can rotate integrally with the support plate. As a result, it is possible to omit the rivets for rotating the first friction member and the second friction member integrally with the support plate, and a low cost can be achieved. In addition, since there is no need to form holes required for riveting on the first friction member and the second friction member, the widths of the first friction member and the second friction member can be reduced, and thus a low cost can also be achieved.

[0007] The friction disk according to the second aspect is configured as follows in the friction disk according to the first aspect. The first engaging convex portion has a first main body portion and a first pressing portion. The first main body portion extends in the axial direction. The first pressing portion extends outward from the outer peripheral surface of the front end portion of the first main body portion and presses the first friction member.

[0008] The friction disk related to the third aspect is configured as follows in the friction disk related to the second aspect. The second engaging convex portion has a second main body portion and a second pressing portion. The second main body portion extends in the axial direction. The second pressing portion extends outward from the outer peripheral surface of the front end portion of the second main body portion and presses the second friction member.

[0009] The friction disk related to the fourth aspect is configured as follows in the friction disk related to the second aspect. The second engaging convex portion only has a second main body portion that extends in the axial direction. That is, the second engaging convex portion does not have a pressing portion like the first pressing portion of the first engaging convex portion.

[0010] The friction disk related to the fifth aspect is configured as follows in the friction disk related to any one of the first to fourth aspects. At least one of the first engaging convex portion and the second engaging convex portion is elliptical in shape when viewed axially.

[0011] The friction disk related to the sixth aspect is configured as follows in the friction disk related to any one of the first to fifth aspects. The support plate has a slit and an anchoring portion. The slit extends from the outer peripheral surface radially inward. The anchoring portion projects from the edge portion of the slit toward the first side or the second side in the axial direction. The anchoring portion bites into the first friction member or the second friction member.

[0012] The friction disk related to the seventh aspect is configured as follows in the friction disk related to any one of the first to sixth aspects. The support plate has a plurality of first slits, a plurality of second slits, a plurality of first anchoring portions, and a plurality of second anchoring portions. Each first slit extends from the outer peripheral surface radially inward. The first slits are arranged at intervals in the circumferential direction. Each second slit extends from the outer peripheral surface radially inward. The second slits are arranged at intervals in the circumferential direction. Each first anchoring portion projects from the edge portion of each first slit toward the first side in the axial direction. Each first anchoring portion bites into the first friction member. Each second anchoring portion projects from the edge portion of each second slit toward the second side in the axial direction. Each second anchoring portion bites into the second friction member.

[0013] The friction disk related to the eighth aspect is configured as follows in the friction disk related to the seventh aspect. The first slits and the second slits are alternately arranged in the circumferential direction.

[0014] The friction disk related to the ninth aspect is configured as follows in the friction disk related to the seventh or eighth aspect. At least one of the first engaging convex portion and the second engaging convex portion is arranged between the first slit and the second slit in the circumferential direction.

[0015] The friction disk related to the tenth aspect is configured as follows in the friction disk related to any one of the first to ninth aspects. The first engaging concave portion has a small-diameter portion and a large-diameter portion. The small-diameter portion opens toward the support plate in the axial direction. The small-diameter portion accommodates the first engaging convex portion. The large-diameter portion communicates with the small-diameter portion in the axial direction. The large-diameter portion opens toward the side opposite to the support plate. The large-diameter portion is larger than the small-diameter portion when viewed axially.

[0016] The friction disk according to the eleventh aspect is configured as follows among the friction disks according to any one of the first to tenth aspects. The support plate has a plurality of first engaging convex portions and a plurality of second engaging convex portions. The plurality of first engaging convex portions and the plurality of second engaging convex portions are alternately arranged in the circumferential direction.

[0017] The friction disk according to the twelfth aspect is configured as follows among the friction disks according to any one of the first to eleventh aspects. The first friction member has a first sliding surface and a first mounting surface. The first sliding surface faces the first side in the axial direction. The first mounting surface faces the second side in the axial direction. The first mounting surface abuts against the support plate. The surface roughness of the first mounting surface is larger than the surface roughness of the first sliding surface.

[0018] The shock absorber device according to the thirteenth aspect includes a shock absorber unit and a torque limiter unit. The shock absorber unit has an input rotating body, an output rotating body, an elastic member, and a friction disk according to any one of the first to twelfth aspects. The elastic member is configured to elastically connect the input rotating body and the output rotating body. The friction disk is mounted on the input rotating body or the output rotating body. The torque limiter unit is configured to frictionally engage with the friction disk. The torque limiter unit sandwiches the friction disk in the axial direction.

[0019] The shock absorber device according to the fourteenth aspect is configured as follows in the shock absorber device according to the thirteenth aspect. The torque limiter unit has a pressing plate and a biasing member. The biasing member biases the pressing plate toward the friction disk. The biasing member has an abutting portion that abuts against the pressing plate. The abutting portion overlaps with the first engaging convex portion when viewed in the axial direction.

[0020] Advantages of the Invention

[0021] According to the present invention, low cost can be achieved. Description of the Drawings

[0022] Figure 1 is a front view of the shock absorber device.

[0023] Figure 2 is Figure 1 a cross-sectional view taken along line II-II of

[0024] Figure 3 is a cross-sectional view of the friction disk.

[0025] Figure 4 is a perspective view of the support plate.

[0026] Figure 5 is a cross-sectional view of the friction disk.

[0027] Figure 6 is a cross-sectional view of the friction disk.

[0028] Figure 7 is Figure 3Cross-sectional view taken along line VII-VII

[0029] Figure 8 It is a view showing the first or second engaging convex portion when observed axially.

[0030] Figure 9 It is an enlarged cross-sectional view of the first engaging convex portion.

[0031] Figure 10 It is a front view of the first engaging convex portion.

[0032] Figure 11 It is an enlarged cross-sectional view of the second engaging convex portion.

[0033] Figure 12 It is a front view of the second engaging convex portion.

[0034] Figure 13 It is a cross-sectional view of the torque limiter unit and the friction disk.

[0035] Figure 14 It is a front view of the friction disk according to the modified example.

[0036] Figure 15 It is Figure 14 Cross-sectional view taken along line XV-XV

[0037] Explanation of reference numerals

[0038] 3: Torque limiter unit; 4: Damper unit; 41: Input rotating body; 42: Output rotating body; 43: Elastic member; 5: Friction disk; 51: Support plate; 511: First side; 512: Second side; 513: Slit; 513a: First slit; 513b: Second slit; 514: Anchoring portion; 514a: First anchoring portion; 514b: Second anchoring portion; 515: First engaging convex portion; 516: First through hole; 517: Second engaging convex portion; 518: Second through hole; 52: First friction member; 521: First engaging concave portion; 522: Small-diameter portion; 523: Large-diameter portion; 53: Second friction member; 531: Second engaging concave portion; 100: Damper device. Detailed description of the preferred embodiment

[0039] Hereinafter, the friction disk 5 and the damper device 100 according to the present embodiment will be described with reference to the accompanying drawings. It should be noted that in the following description, the axial direction is the direction in which the rotation axis O of the friction disk 5 and the damper device 100 extends. In addition, the circumferential direction is the circumferential direction of a circle centered on the rotation axis O, and the radial direction is the radial direction of a circle centered on the rotation axis O. Further, the first axial side means Figure 2 the left side, and the second axial side means Figure 2 the right side.

[0040] Figure 1is the front view of the shock absorber device, Figure 2 is Figure 1 a sectional view taken along line II-II of. As Figure 1 and Figure 2 shown, the shock absorber device 100 has a torque limiter unit 3 and a shock absorber unit 4. The torque limiter unit 3 and the shock absorber unit 4 rotate substantially integrally with each other. The shock absorber device 100 is disposed between an internal combustion engine (not shown) and an output side component (not shown). It should be noted that the output side component is, for example, an electric motor or a transmission. The shock absorber device 100 is mounted on a flywheel (not shown). For example, in Figure 2 the internal combustion engine is disposed on the left side of the shock absorber device 100, and the output side component is disposed on the right side of the shock absorber device 100. The shock absorber device 100 is configured to limit the torque transmitted between the internal combustion engine and the output side component and to attenuate torque fluctuations.

[0041] [Shock Absorber Unit]

[0042] The shock absorber unit 4 is mounted on the torque limiter unit 3. The shock absorber unit 4 is configured to attenuate rotational fluctuations. The shock absorber unit 4 has an input rotating body 41, an output rotating body 42, an elastic member 43, and a friction disk 5.

[0043] <Input Rotating Body>

[0044] The input rotating body 41 has a first plate 41a and a second plate 41b. Both the first plate 41a and the second plate 41b are annular members having a central hole. The first plate 41a and the second plate 41b rotate integrally with each other. In addition, the first plate 41a and the second plate 41b cannot move relative to each other in the axial direction.

[0045] The first plate 41a and the second plate 41b are arranged at intervals in the axial direction. The second plate 41b is arranged on the second axial side with respect to the first plate 41a.

[0046] The first plate 41a and the second plate 41b respectively have a plurality of window portions 411a, 411b. It should be noted that in the present embodiment, the first plate 41a and the second plate 41b respectively have four window portions 411a, 411b, but their numbers are not limited thereto.

[0047] Each of the window portions 411a, 411b is arranged at intervals in the circumferential direction. Each window portion 411 is configured to accommodate the elastic member 43.

[0048] <Output Rotating Body>

[0049] The output rotating body 42 is configured to transmit the torque from the input rotating body 41 to the output side member. The output rotating body 42 is axially disposed between the first plate 41a and the second plate 41b. The output rotating body 42 is configured to be rotatable relative to the first plate 41a and the second plate 41b.

[0050] The output rotating body 42 has a hub 421 and a flange plate 422. The hub 421 and the flange plate 422 are integrally formed as one member, but may also be configured as separate members.

[0051] The hub 421 is cylindrical and is disposed in the central holes of the first plate 41a and the second plate 41b. A spline hole extending in the axial direction is formed in the inner peripheral portion of the hub 421. The input shaft of the output side member can be spline-fitted with the spline hole.

[0052] The flange plate 422 extends radially from the outer peripheral surface of the hub 421. The flange plate 422 is formed in an annular shape. The flange plate 422 is configured to be rotatable relative to the first plate 41a and the second plate 41b. The flange plate 422 is axially disposed between the first plate 41a and the second plate 41b.

[0053] The flange plate 422 has a plurality of receiving holes 423. It should be noted that, in the present embodiment, the flange plate 422 has four receiving holes 423, but the number thereof is not limited thereto. The respective receiving holes 423 are circumferentially spaced apart from each other. Each receiving hole 423 is configured to receive an elastic member 43. Each receiving hole 423 is disposed at a position overlapping with the respective window portions 411a, 411b when viewed axially.

[0054] <Elastic member>

[0055] The elastic member 43 is configured to elastically connect the input rotating body 41 and the output rotating body 42 in the rotational direction. The elastic member 43 is, for example, a helical spring.

[0056] The elastic member 43 is received in the receiving hole 423 of the output rotating body 42. In addition, the elastic member 43 is received in the window portion 411a of the first plate 41a and is also received in the window portion 411b of the second plate 41b.

[0057] <Friction disk>

[0058] The friction disk 5 is mounted on the outer peripheral end portion of the input rotating body 41. Specifically, the friction disk 5 is mounted on the first plate 41a by a fastening member 37. It should be noted that the friction disk 5 may also be mounted on the second plate 41b. The friction disk 5 rotates integrally with the input rotating body 41. It should be noted that, as the fastening member 37, a rivet can be exemplified.

[0059] Figure 3 is an enlarged cross-sectional view of the friction disk 5. As Figure 2 andFigure 3 As shown, the friction disk 5 can rotate about the rotation axis O. The friction disk 5 is annular. The friction disk 5 has a support plate 51, a first friction member 52, and a second friction member 53. The support plate 51, the first friction member 52, and the second friction member 53 rotate integrally with each other.

[0060] <Support Plate>

[0061] Figure 4 is a perspective view of the support plate 51, Figure 5 and Figure 6 is an enlarged cross-sectional view of the friction disk 5 showing the engaging portion, Figure 7 is Figure 3 a cross-sectional view taken along line VII-VII of Figures 3 to 7 As shown, the support plate 51 is an annular plate. The support plate 51 is configured to be able to rotate about the rotation axis O.

[0062] The support plate 51 is mounted on the first plate 41a. For example, the support plate 51 is mounted on the first plate 41a using the fastening member 37. It should be noted that the support plate 51 is a separate component from the first plate 41a, but the support plate 51 may also be integrally formed as one component with the first plate 41a.

[0063] The support plate 51 has a first side surface 511, a second side surface 512, a plurality of slits 513, a plurality of anchoring portions 514, a plurality of first engaging convex portions 515, a plurality of first through holes 516, a plurality of second engaging convex portions 517, and a plurality of second through holes 518. In addition, the support plate 51 has a plurality of insertion holes 519 for inserting a jig for positioning.

[0064] The first side surface 511 is the surface of the two side surfaces of the support plate 51 that faces the first side in the axial direction. The first side surface 511 is annular when viewed axially. The first side surface 511 has no steps and its axial position is constant. That is, the entire first side surface 511 lies on the same plane.

[0065] The second side surface 512 is the surface of the two side surfaces of the support plate 51 that faces the second side in the axial direction. The second side in the axial direction is the opposite side of the first side in the axial direction. The second side surface 512 is annular when viewed axially. The second side surface 512 has no steps and its axial position is constant. That is, the entire second side surface 512 lies on the same plane.

[0066] Each slit 513 extends from the outer peripheral surface of the support plate 51 radially inward. The slits 513 are arranged at intervals in the circumferential direction. Each slit 513 penetrates the support plate 51 in the thickness direction.

[0067] As Figure 7As shown, the anchoring portion 514 protrudes from the edge portion of the slit 513 toward the first side in the axial direction or the second side in the axial direction. It should be noted that in the present embodiment, the anchoring portion 514 protrudes toward the first side in the axial direction, but the anchoring portion 514 may also protrude toward the second side in the axial direction. The protruding amount of the anchoring portion 514 is not particularly limited, for example, it is about 0.1 to 0.5 mm.

[0068] The anchoring portion 514 is formed along the edge portion of the slit 513. It should be noted that the anchoring portion 514 may be continuously formed or intermittently formed along the edge portion of the slit 513. The anchoring portion 514 protrudes from the first side surface 511 of the support plate 51 toward the first side in the axial direction. The anchoring portion 514 bites into the first friction member 52. It should be noted that the anchoring portion 514 may be formed at the edge portions of all the slits 513 or may be formed at the edge portions of some of the slits 513. In the case where the anchoring portion 514 protrudes toward the second side in the axial direction, the anchoring portion 514 bites into the second friction member 53. Through the anchoring portion 514, the support plate 51 can be more reliably rotated integrally with the first friction member 52 or the second friction member 53.

[0069] As Figure 4 and Figure 5 shown, the first engaging convex portion 515 protrudes from the first side surface 511 toward the first side in the axial direction. The first engaging convex portion 515 is disposed between a pair of circumferentially adjacent slits 513. It should be noted that only one first engaging convex portion 515 is disposed between a pair of adjacent slits 513. That is, a plurality of first engaging convex portions 515 are not disposed between a pair of adjacent slits 513. The first engaging convex portion 515 is circular in shape when viewed axially. It should be noted that the first engaging convex portion 515 can also be elliptical in shape (refer to Figure 8 ).

[0070] The first through hole 516 extends axially within the first engaging convex portion 515. For this reason, the first engaging convex portion 515 becomes a cylindrical shape extending axially. It should be noted that the first through hole 516 is circular in shape when viewed axially. The first through hole 516 penetrates the support plate 51 axially. The first engaging convex portion 515 and the first through hole 516 can be formed, for example, by burring.

[0071] Figure 9 is an enlarged cross-sectional view of the first engaging convex portion 515, Figure 10 is a view showing the first engaging convex portion 515 viewed axially. As Figure 9 and Figure 10 shown, the first engaging convex portion 515 has a first main body portion 515a and a first pressing portion 515b. The first main body portion 515a extends axially. The first main body portion 515a is cylindrical. That is, the first through hole 516 penetrates the first main body portion 515a axially.

[0072] The first pressing portion 515b extends outward from the outer peripheral surface of the front end portion (the first side end portion in the axial direction) of the first main body portion 515a. The first pressing portion 515b presses the first friction member 52. Specifically, the first pressing portion 515b is formed by swaging (forging) the front end portion of the first engaging convex portion 515. The first friction member 52 is fixed to the support plate 51 by sandwiching the first friction member 52 between the first pressing portion 515b and the first side surface 511 of the support plate 51. The first pressing portion 515b is composed of a plurality of pressing pieces 515c. It should be noted that the first pressing portion 515b may also be an annular shape. The first pressing portion 515b presses a stepped portion formed at the boundary between a small-diameter portion 522 and a large-diameter portion 523, which will be described later.

[0073] As Figure 6 shown, the second engaging convex portion 517 protrudes from the second side surface 512 toward the second side in the axial direction. The second engaging convex portion 517 is circular in shape when viewed axially. It should be noted that the second engaging convex portion 517 can also be elliptical (refer to Figure 8 ).

[0074] The second engaging convex portion 517 is disposed between a pair of circumferentially adjacent slits 513. Each second engaging convex portion 517 and each first engaging convex portion 515 are alternately disposed in the circumferential direction. It should be noted that only one second engaging convex portion 517 is disposed between a pair of adjacent slits 513. That is, a plurality of second engaging convex portions 517 are not disposed between a pair of adjacent slits 513. It should be noted that neither the first engaging convex portion 515 nor the second engaging convex portion 517 is disposed between a pair of adjacent slits 513. That is, it is any of the following cases: only one first engaging convex portion 515 is disposed between a pair of adjacent slits 513, or only one second engaging convex portion 517 is disposed, or neither the first engaging convex portion 515 nor the second engaging convex portion 517 is disposed.

[0075] The second through-hole 518 extends axially within the second engaging convex portion 517. For this reason, the second engaging convex portion 517 becomes a cylindrical shape extending axially. It should be noted that the second through-hole 518 is circular in shape when viewed axially. The second through-hole 518 penetrates the support plate 51 axially.

[0076] Figure 11 is an enlarged cross-sectional view of the second engaging convex portion 517, Figure 12 is a view showing the second engaging convex portion 517 as viewed axially. As Figure 11 and Figure 12As shown, the second engaging convex portion 517 has a second main body portion 517a and a second pressing portion 517b. The second main body portion 517a extends in the axial direction. The second main body portion 517a is cylindrical. That is, the second through hole 518 axially penetrates the second main body portion 517a.

[0077] The second pressing portion 517b extends outward from the outer peripheral surface of the front end portion (the second side end portion in the axial direction) of the second main body portion 517a. The second pressing portion 517b presses the second friction member 53. Specifically, the second pressing portion 517b is formed by riveting the front end portion of the second engaging convex portion 517. The second friction member 53 is fixed to the support plate 51 by sandwiching the second friction member 53 between the second pressing portion 517b and the first side surface 511 of the support plate 51. The second pressing portion 517b is composed of a plurality of pressing pieces 517c. It should be noted that the second pressing portion 517b may also be a single ring shape. The second pressing portion 517b presses the stepped portion formed at the boundary between the small diameter portion 532 and the large diameter portion 533 described later.

[0078] <First friction member and second friction member>

[0079] As Figure 2 , Figure 3 , Figures 5 to 7 shown, the first friction member 52 is ring-shaped. The first friction member 52 is mounted on the first side surface 511 of the support plate 51. The first friction member 52 rotates integrally with the support plate 51. For this reason, the friction disk 5 is configured to frictionally engage with the side plate 31 via the first friction member 52.

[0080] The first friction member 52 has a first sliding surface 524 and a first mounting surface 525. The first sliding surface 524 is a surface facing the side opposite to the support plate 51 in the axial direction. That is, the first sliding surface 524 faces the first side in the axial direction. The first sliding surface 524 abuts against the side plate 31. When the friction disk 5 slides relative to the torque limiter unit 3, the first sliding surface 524 slides against the side plate 31.

[0081] The first mounting surface 525 is a surface facing the support plate 51 side in the axial direction. That is, the first mounting surface 525 faces the second side in the axial direction. The first mounting surface 525 abuts against the support plate 51.

[0082] The first mounting surface 525 has a different surface roughness from the first sliding surface 524. For example, the surface roughness (arithmetic mean roughness) of the first mounting surface 525 is larger than that of the first sliding surface 524. For example, by grinding the first sliding surface 524 without grinding the first mounting surface 525, the surface roughness of the first mounting surface 525 can be relatively increased.

[0083] The second friction member 53 is annular. The second friction member 53 is mounted on the second side surface 512 of the support plate 51. The second friction member 53 rotates integrally with the support plate 51. For this reason, the friction disc 5 is configured to be frictionally engaged with the pressure plate 33 via the second friction member 53.

[0084] The second friction member 53 has a second sliding surface 534 and a second mounting surface 535. The second sliding surface 534 is a surface facing the side opposite to the support plate 51 in the axial direction. That is, the second sliding surface 534 faces the second side in the axial direction. The second sliding surface 534 abuts against the pressure plate 33. When the friction disc 5 slides relative to the torque limiter unit 3, the second sliding surface 534 slides relative to the pressure plate 33.

[0085] The second mounting surface 535 is a surface facing the support plate 51 side in the axial direction. That is, the second mounting surface 535 faces the first side in the axial direction. The second mounting surface 535 abuts against the support plate 51.

[0086] The second mounting surface 535 has a surface roughness different from that of the second sliding surface 534. For example, the surface roughness (arithmetic mean roughness) of the second mounting surface 535 is larger than that of the second sliding surface 534. For example, by grinding the second sliding surface 534 without grinding the second mounting surface 535, the surface roughness of the second mounting surface 535 can be relatively increased.

[0087] As Figure 5 shown, the first friction member 52 has a plurality of first engaging recesses 521. The respective first engaging recesses 521 are arranged at intervals in the circumferential direction. When viewed axially, each of the first engaging recesses 521 overlaps with each of the first engaging protrusions 515. Each of the first engaging recesses 521 is formed on the surface of the first friction member 52 on the support plate 51 side. The first engaging recesses 521 are recessed toward the first side in the axial direction. It should be noted that in the present embodiment, the first engaging recesses 521 penetrate the first friction member 52 in the axial direction.

[0088] The first engaging recesses 521 are engaged with the first engaging protrusions 515 of the support plate 51. That is, the first engaging protrusions 515 are disposed within the first engaging recesses 521. It should be noted that the clearance between the first engaging protrusions 515 and the first engaging recesses 521 is about 0.05 to 0.30 mm on one side. Thus, since the first engaging protrusions 515 are engaged with the first engaging recesses 521, the first friction member 52 rotates integrally with the support plate 51. It should be noted that the first engaging recesses 521 are circular in shape when viewed axially.

[0089] Specifically, the first engaging recess 521 has a small-diameter portion 522 and a large-diameter portion 523. The large-diameter portion 523 is disposed on the first side in the axial direction with respect to the small-diameter portion 522. The small-diameter portion 522 and the large-diameter portion 523 communicate with each other.

[0090] The small-diameter portion 522 opens toward the support plate 51. That is, the small-diameter portion 522 opens to the second side in the axial direction. The small-diameter portion 522 houses the first engaging convex portion 515.

[0091] The large-diameter portion 523 opens to the side opposite to the support plate 51. That is, the large-diameter portion 523 opens to the first side in the axial direction. The large-diameter portion 523 is larger than the small-diameter portion 522 when viewed in the axial direction. That is, the diameter of the large-diameter portion 523 is larger than the diameter of the small-diameter portion 522. The first pressing portion 515b of the first engaging convex portion 515 presses the stepped portion between the large-diameter portion 523 and the small-diameter portion 522.

[0092] As Figure 6 shown, the second friction member 53 has a plurality of second engaging concave portions 531. The second engaging concave portions 531 are arranged at intervals from each other in the circumferential direction. Each second engaging concave portion 531 overlaps with each second engaging convex portion 517 when viewed in the axial direction. Each second engaging concave portion 531 is formed on the surface of the second friction member 53 on the side of the support plate 51. The second engaging concave portion 531 is recessed toward the second side in the axial direction. It should be noted that, in the present embodiment, the second engaging concave portion 531 penetrates the second friction member 53 in the axial direction.

[0093] The second engaging concave portion 531 engages with the second engaging convex portion 517 of the support plate 51. That is, the second engaging convex portion 517 is disposed within the second engaging concave portion 531. It should be noted that the clearance between the second engaging convex portion 517 and the second engaging concave portion 531 is about 0.05 to 0.30 mm on one side. Thus, since the second engaging convex portion 517 engages with the second engaging concave portion 531, the second friction member 53 rotates integrally with the support plate 51. It should be noted that the second engaging concave portion 531 is circular in shape when viewed in the axial direction.

[0094] Specifically, the second engaging concave portion 531 has a small-diameter portion 532 and a large-diameter portion 533. The large-diameter portion 533 is disposed on the second side in the axial direction with respect to the small-diameter portion 532. The small-diameter portion 532 and the large-diameter portion 533 communicate with each other.

[0095] The small-diameter portion 532 opens toward the support plate 51. That is, the small-diameter portion 532 opens to the first side in the axial direction. The small-diameter portion 532 houses the second engaging convex portion 517.

[0096] The large-diameter portion 533 opens to the side opposite to the support plate 51. That is, the large-diameter portion 533 opens to the second side in the axial direction. The large-diameter portion 533 is larger than the small-diameter portion 532 when viewed in the axial direction. That is, the diameter of the large-diameter portion 533 is larger than the diameter of the small-diameter portion 532. The second pressing portion 517b of the second engaging convex portion 517 presses the stepped portion between the large-diameter portion 533 and the small-diameter portion 532.

[0097] When a torque equal to or greater than a specified value is input to the shock absorber device 100, the friction disk 5 slides on the side plate 31 and the pressure plate 33 via the first friction member 52 and the second friction member 53, and rotates relative to the side plate 31 and the pressure plate 33. On the other hand, when a torque less than the specified value is input, the friction disk 5 rotates integrally with the side plate 31 and the pressure plate 33.

[0098] [Torque limiter unit]

[0099] As Figure 2 shown, the torque limiter unit 3 is configured to be rotatable about the rotation axis O. The torque limiter unit 3 is disposed on the second axial side with respect to the flywheel. The torque limiter unit 3 is annular. The torque limiter unit 3 is mounted on the flywheel.

[0100] The torque limiter unit 3 is configured to limit the torque transmitted between the flywheel and the shock absorber unit 4. That is, the torque limiter unit 3 is configured to control the transmission of a torque equal to or greater than the specified value in the shock absorber device 100. The torque limiter unit 3 is configured to frictionally engage with the friction disk 5. In addition, the torque limiter unit 3 sandwiches the friction disk 5 in the axial direction.

[0101] The torque limiter unit 3 includes a side plate 31, a cover plate 32, a pressure plate 33, and a disc spring 34 (an example of a biasing member).

[0102] The side plate 31 and the cover plate 32 are mounted on the flywheel. The side plate 31 and the cover plate 32 rotate integrally with the flywheel. The side plate 31 and the cover plate 32 are annular. The cover plate 32 is disposed on the second axial side with respect to the side plate 31. The plate thickness of the cover plate 32 is thinner than that of the side plate 31.

[0103] The pressure plate 33 is annular. The pressure plate 33 is disposed between the side plate 31 and the cover plate 32 in the axial direction. Specifically, the pressure plate 33 is disposed between the second friction member 53 and the disc spring 34 in the axial direction. The pressure plate 33 is configured to rotate integrally with the side plate 31. It should be noted that the pressure plate 33 is movable relative to the side plate 31 in the axial direction.

[0104] The disc spring 34 is disposed between the cover plate 32 and the pressure plate 33 in the axial direction. The disc spring 34 biases the pressure plate 33 toward the first axial side. That is, the disc spring 34 biases the pressure plate 33 toward the friction disk 5. Thereby, the friction disk 5 is sandwiched between the pressure plate 33 and the side plate 31.

[0105] Figure 13 is a cross-sectional view showing the arrangement relationship between the friction disk 5 and the torque limiter unit 3. As Figure 13As shown, the disc spring 34 has an abutting portion 341. The abutting portion 341 abuts against the pressure plate 33. The abutting portion 341 is the inner peripheral end portion or the outer peripheral end portion of the disc spring 34. It should be noted that, in the present embodiment, the inner peripheral end portion of the disc spring 34 becomes the abutting portion 341. The abutting portion 341 overlaps with each first engaging convex portion 515 when observed axially. That is, the abutting portion 341 and each first engaging convex portion 515 are in the same radial position. It should be noted that the abutting portion 341 of the disc spring 34 also overlaps with the second engaging convex portion 517 when observed axially.

[0106] [Modification Example]

[0107] The present invention is not limited to the above-described embodiment, and various deformations or modifications can be implemented without departing from the scope of the present invention. In addition, the following modification examples can be applied simultaneously.

[0108] (a) In the above embodiment, the support plate 51 has the anchoring portion 514 that protrudes only toward the first side in the axial direction or only toward the second side in the axial direction, but the configuration of the support plate 51 is not limited thereto.

[0109] Figure 14 is the front view of the friction disc 5, Figure 15 is Figure 14 the sectional view taken along the line XV-XV of Figure 14 and Figure 15 As shown in, the support plate 51 may also have a plurality of first slits 513a, a plurality of second slits 513b, a plurality of first anchoring portions 514a, and a plurality of second anchoring portions 514b.

[0110] The plurality of first slits 513a and the plurality of second slits 513b are alternately arranged in the circumferential direction. The plurality of first slits 513a and the plurality of second slits 513b are arranged at intervals from each other in the circumferential direction.

[0111] The first anchoring portion 514a protrudes from the edge portion of the first slit 513a toward the first side in the axial direction. The first anchoring portion 514a bites into the first friction member 52.

[0112] The second anchoring portion 514b protrudes from the edge portion of the second slit 513b toward the second side in the axial direction. That is, the second anchoring portion 514b protrudes toward the side opposite to the first anchoring portion 514a. The second anchoring portion 514b bites into the second friction member 53. The first anchoring portion 514a and the second anchoring portion 514b are alternately arranged in the circumferential direction.

[0113] The first engaging convex portion 515 is circumferentially disposed between the first slit 513a and the second slit 513b. That is, the first engaging convex portion 515 is circumferentially disposed between the first anchoring portion 514a and the second anchoring portion 514b. Further, the second engaging convex portion 517 is also circumferentially disposed between the first slit 513a and the second slit 513b.

[0114] (b)In the above embodiment, both the first engaging convex portion 515 and the second engaging convex portion 517 have pressing portions 515b, 517b, but the configuration of the support plate 51 is not limited thereto. For example, the first engaging convex portion 515 may have a first pressing portion 515b, while the second engaging convex portion 517 may not have a second pressing portion 517b. That is, the second engaging convex portion 517 may only have a second main body portion 517a.

[0115] (c)A plurality of first engaging convex portions 515 may be disposed between a pair of adjacent slits 513. A plurality of second engaging convex portions 517 may be disposed between a pair of adjacent slits 513. Further, both the first engaging convex portion 515 and the second engaging convex portion 517 may be disposed between a pair of adjacent slits 513.

[0116] (d)In the above embodiment, the support plate 51 has an anchoring portion 514, but it may not have an anchoring portion 514.

[0117] (e)In the above embodiment, the first engaging convex portion 515 and the second engaging convex portion 517 are formed in a circular shape or an elliptical shape when viewed axially, but the shapes of the first engaging convex portion 515 and the second engaging convex portion 517 are not limited thereto. For example, the first engaging convex portion 515 and the second engaging convex portion 517 may be rectangular when viewed axially, or may have other shapes.

[0118] (f)In the above embodiment, the side plate 31 is disposed on the first side in the axial direction with respect to the friction disk 5, and the pressure plate 33 is disposed on the second side in the axial direction, but the configuration is not limited thereto. For example, the side plate 31 may be disposed on the second side in the axial direction with respect to the friction disk 5, and the pressure plate 33 may be disposed on the first side in the axial direction.

[0119] (g)In the above embodiment, the internal combustion engine is disposed on the first side in the axial direction with respect to the damper device 100, and the output side component is disposed on the second side in the axial direction, but the arrangement of the damper device 100 is not limited thereto. For example, the internal combustion engine may be disposed on the second side in the axial direction with respect to the damper device 100, and the output side component may be disposed on the first side in the axial direction.

Claims

1. A friction disc having: The support plate has a first side surface and a second side surface, wherein the first side surface faces the first side in the axial direction, and the second side surface faces the second side in the axial direction; a first friction member, mounted on the first side surface of the support plate; as well as a second friction member, mounted on the second side surface of the support plate, The support plate has: A first engaging protrusion protrudes from the first side surface toward a first side in the axial direction; A first through hole extending in the axial direction within the first engaging protrusion; A second engaging protrusion protrudes from the second side surface toward a second side in the axial direction; as well as A second through hole extends in the axial direction in the second engaging protrusion, The first friction member has a first engaging recessed portion engaged with the first engaging convex portion. The second friction member has a second engaging recessed portion engaged with the second engaging protruding portion.

2. The friction disc according to claim 1, wherein: The first engaging protrusion has: A first main body portion extending in the axial direction; as well as The first pressing portion extends outward from the outer peripheral surface of the front end portion of the first main body portion and presses the first friction member.

3. The friction disc according to claim 2, wherein: The second engaging protrusion has: A second main body portion extending in the axial direction; as well as The second pressing portion extends outward from the outer peripheral surface of the front end portion of the second body portion and presses the second friction member.

4. The friction disc according to claim 2, wherein: The second engaging protrusion has only a second main body portion extending in the axial direction.

5. The friction disc according to claim 1, wherein: At least one of the first engaging protrusion and the second engaging protrusion has an elliptical shape when viewed in the axial direction.

6. The friction disc according to claim 1, wherein: The support plate has: a slit extending radially inward from the outer peripheral surface of the support plate; as well as The anchor portion protrudes from the edge of the slit toward the first side in the axial direction or the second side in the axial direction and bites into the first friction member or the second friction member.

7. The friction disc according to claim 1, wherein: The support plate has: A plurality of first slits extending radially inward from the outer peripheral surface of the support plate and arranged at intervals from each other in the circumferential direction; a plurality of second slits extending radially inward from the outer peripheral surface of the support plate and arranged at intervals from each other in the circumferential direction; a plurality of first anchoring portions, protruding from the edge of each of the first slits toward the first side in the axial direction and biting into the first friction member; as well as A plurality of second anchor portions protrude from the edge of each of the second slits toward the second side in the axial direction and bite into the second friction material.

8. The friction disc according to claim 7, wherein: The first slits and the second slits are alternately arranged in the circumferential direction.

9. The friction disc according to claim 7, wherein: At least one of the first engaging protrusion and the second engaging protrusion is disposed between the first slit and the second slit in the circumferential direction.

10. The friction disc according to claim 1, wherein: The first engaging recess has: A small diameter portion, which opens toward the support plate in the axial direction and accommodates the first engaging protrusion; as well as The large diameter portion communicates with the small diameter portion in the axial direction and opens toward a side opposite to the support plate. The large diameter portion is larger than the small diameter portion when viewed in the axial direction.

11. The friction disc according to claim 1, wherein: The support plate has a plurality of the first engaging protrusions and a plurality of the second engaging protrusions. The plurality of first engaging protrusions and the plurality of second engaging protrusions are alternately arranged in the circumferential direction.

12. The friction disc according to claim 1, wherein: The first friction member has a first sliding surface and a first mounting surface, wherein the first sliding surface faces the first axial side, and the first mounting surface faces the second axial side and abuts against the support plate. The surface roughness of the first mounting surface is greater than the surface roughness of the first sliding surface.

13. A vibration damper device comprising: A damper unit comprising an input rotating body, an output rotating body, an elastic member, and a friction disc according to any one of claims 1 to 12, wherein the elastic member is configured to elastically connect the input rotating body and the output rotating body, and the friction disc is mounted on the input rotating body or the output rotating body; and The torque limiter unit is configured to be frictionally engaged with the friction disk and to sandwich the friction disk in the axial direction.

14. The shock absorber device according to claim 13, wherein: The torque limiter unit includes a pressure plate and a force applying member, wherein the force applying member applies force to the pressure plate toward the friction disk. The urging member has a contact portion that contacts the pressure plate. When viewed in the axial direction, the abutment portion overlaps with the first engaging protrusion.

Images