Damper Device

Abstract

To provide a damper device which is compact in an axial length, and to provide a damper device which can stably generate hysteresis torque having a variety of variations.SOLUTION: A damper device has: a first rotating body which rotates around a rotating shaft; a second rotating body which relatively rotates with respect to the first rotating body; an elastic mechanism part; a radial-direction extension part which abuts on the elastic mechanism part; and an axial-direction extension part which is at least partially accommodated in either of the first rotating body and the second rotating body. The damper device also comprises: a control plate which is arranged at only either of a first accommodation space and a second accommodation space in an axial direction; a first slide part which generates first slide torque, has a first opening part, and is rotatably supported by an external peripheral face of the second rotating body at an internal peripheral face which surrounds the first opening part; and a second slide part which generates second slide torque. When the first rotating body and the second rotating body are relatively rotated, the damper device generates the first slide torque and the second slide torque.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The technology disclosed in this application relates to a damper device. [Background technology]

[0002] In a vehicle, etc., a damper device is provided on the torque transmission path between a driving source such as an engine and a transmission, which absorbs torque vibrations transmitted from the driving source to the transmission, and the damper device is incorporated in, for example, a clutch device.

[0003] A commonly known configuration of a damper device is to interpose a coil spring between a disc plate as an input member and a hub as an output member that are rotatable relative to each other, and to absorb and attenuate torque fluctuations by utilizing elastic deformation of the coil spring. Also known is a technique for further absorbing the torque fluctuations by generating a sliding torque (hysteresis torque) based on the relative rotation between the disc plate and the hub in addition to the elastic deformation of the coil spring.

[0004] For example, Patent Document 1 discloses a damper device whose main components include a first rotating member (reference number 1 in Patent Document 1) as the input side of power transmission, a second rotating member (reference number 2 in Patent Document 1) as the output side of power transmission, two control plates (reference numbers 31 and 32 in Patent Document 1), a first sliding member that generates a first sliding torque (reference numbers 6 and 7 in Patent Document 1), a second sliding member that generates a second sliding torque larger than the first sliding torque (reference numbers 8 and 9 in Patent Document 1), and an elastic member 57 using a cone spring. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 6471486 specification Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the damper device described in Patent Document 1, two control plates are housed between the first rotating member and the second rotating member in the axial direction, which results in a large number of parts and a large axial length of the damper device, posing challenges when mounting it on a vehicle, etc.

[0007] In view of this, various embodiments provide a damper device having a compact axial length, and a damper device capable of stably generating various variations of hysteresis torque. [Means for solving the problem]

[0008] A damper device according to one embodiment includes a first rotating body having at least a first plate that rotates around a rotation axis and a second plate that is arranged opposite the first plate and rotates integrally with the first plate around the rotation axis, a second rotating body that rotates relative to the first rotating body around the rotation axis, an elastic mechanism that elastically connects the first rotating body and the second rotating body in a rotational direction, a radial extending portion that extends in a radial direction and abuts against the elastic mechanism, and an axial extending portion that extends in an axial direction and is at least partially accommodated in either the first rotating body or the second rotating body, and in the axial direction, a first accommodating space between the first plate and the second rotating body and a second accommodating space between the second plate and the second rotating body are at least partially accommodated in the first accommodating space. a first sliding part that is arranged between the first rotating body and the control plate and slides against at least one of the first rotating body and the control plate to generate a first sliding torque, has a first opening, and is rotatably supported by the outer circumferential surface of the second rotating body at an inner circumferential surface surrounding the first opening; and a second sliding part that is arranged between the second rotating body and the control plate and slides against at least one of the second rotating body and the control plate to generate a second sliding torque, and generates the first sliding torque and the second sliding torque when the first rotating body and the second rotating body rotate relative to each other.

[0009] According to this configuration, by using only one control plate, it is possible to reduce the number of parts and provide a damper device with a compact axial length. Furthermore, it is possible to improve the ease of assembling the first sliding portion to the second rotating body.

[0010] In addition, in one embodiment of the damper device, one of the first sliding torque and the second sliding torque is greater than the other, and is generated only when the second rotating body rotates relative to the first rotating body in a counterclockwise direction.

[0011] With this configuration, the damper device according to one embodiment can generate a small hysteresis torque (the smaller of the first sliding torque and the second sliding torque) when the first rotating body and the second rotating body rotate relative to each other, while generating a large hysteresis torque (the larger of the first sliding torque and the second sliding torque) in a special case in which the first rotating body and the second rotating body rotate relative to each other in a predetermined direction. At this time, it is also possible to further increase the magnitude of the "large hysteresis torque" by setting the first sliding torque or the second sliding torque generated only in the special case to be larger than the other. In this way, the damper device according to one embodiment can generate various variations of hysteresis torque. The above-mentioned "large hysteresis torque" can be used, for example, in the case of suppressing relatively large vibrations and noises generated at the start of the engine of a vehicle (especially a hybrid vehicle).

[0012] In addition, in one embodiment of the damper device, the elastic mechanism portion includes a first elastic member and a pair of sheet members that support the first elastic member by sandwiching it from both sides, and the radially extending portion abuts against either the first elastic member or the pair of sheet members.

[0013] With this configuration, the radially extending portion can reliably abut against the elastic mechanism portion, and as a result, the damper device according to one embodiment can efficiently generate the first sliding torque and the second sliding torque.

[0014] In addition, in one embodiment of the damper device, the first sliding portion includes a first sliding surface that slides against the first rotating body or the radially extending portion, and a second elastic member that urges the first sliding surface in a direction approaching the first rotating body or the radially extending portion.

[0015] With this configuration, the damper device according to one aspect can reliably and efficiently generate the first sliding torque.

[0016] In addition, in one embodiment of the damper device, the second sliding portion includes a second sliding surface that slides against the second rotating body or the radially extending portion, and a third elastic member that urges the second sliding surface in a direction approaching the second rotating body or the radially extending portion.

[0017] With this configuration, the damper device according to one aspect can reliably and efficiently generate the second sliding torque.

[0018] In addition, in one embodiment of the damper device, the first sliding portion and the second sliding portion are formed integrally with the control plate and function as part of the control plate, and the radially extending portion slides directly against the first rotating body and also slides directly against the second rotating body.

[0019] With this configuration, the damper device according to one embodiment can further reduce the number of parts by integrating the control plate, the first sliding portion, and the second sliding portion.

[0020] In one embodiment, the damper device further includes a thrust member having at least one of a first surface that slides against the first rotating body and a second surface that slides against the second rotating body, in the space between the first accommodating space and the second accommodating space that is different from the space in which the control plate is arranged.

[0021] With this configuration, the damper device according to one aspect can further additionally generate hysteresis torque based on the first surface and the second surface.

[0022] In the damper device according to one embodiment, the thrust member has a fourth elastic member that biases the second surface in a direction approaching the second body of revolution.

[0023] With this configuration, the damper device according to one aspect can reliably and efficiently generate the additional hysteresis torque described above.

[0024] In one embodiment of the damper device, the thrust member has a second opening and is rotatably supported by the outer circumferential surface of the second rotating body on an inner circumferential surface surrounding the second opening, and a gap provided between the inner circumferential surface surrounding one of the first opening and the second opening that is located on the transmission side and the outer circumferential surface of the second rotating body is smaller than a gap provided between the inner circumferential surface surrounding the other of the first opening and the second opening and the outer circumferential surface of the second rotating body.

[0025] With this configuration, the damper device of one embodiment can keep small the angle at which the second rotating body tilts relative to the drive shaft, and therefore the angle at which the first sliding part supported by the second rotating body tilts, or the angle at which the thrust member supported by the second rotating body tilts, thereby reducing the possibility that the sliding of the first sliding part against the control plate, or the sliding of the thrust member against the second rotating body, will change from what was originally intended.

[0026] In one embodiment, the damper device further includes a thrust member having at least one of a first surface that slides against the first rotating body and a second surface that slides against the second rotating body, in the space between the first accommodating space and the second accommodating space that is different from the space in which the control plate is arranged, and one of the first sliding portion and the thrust member that is located on the transmission side is formed as a bush.

[0027] With this configuration, the damper device according to one aspect can simply and effectively prevent the second rotor from tilting with respect to the drive axis Z.

[0028] In one embodiment of the damper device, the first sliding portion has a first apex that abuts against the control plate at a position facing the control plate, a first inclined surface that is connected to the first apex, extends in a direction away from the rotation axis of the first sliding portion and is inclined in a direction away from the control plate, and a second inclined surface that is connected to the first apex, extends in a direction toward the rotation axis and is inclined in a direction away from the control plate.

[0029] With this configuration, even if the second rotor is tilted with respect to the drive shaft, the first sliding portion abuts against the control plate at the first apex and slides against the control plate, so that the area of ​​the abutting portion between the first sliding surface portion and the control plate can be prevented from changing, thereby preventing the magnitude of the first sliding torque from changing.

[0030] In addition, in a damper device according to one embodiment, the thrust member has a second apex that abuts against the second rotor at a position facing the second rotor, a third inclined surface that is connected to the second apex, extends in a direction away from the rotation axis of the thrust member and is inclined in a direction away from the second rotor, and a fourth inclined surface that is connected to the second apex, extends in a direction approaching the rotation axis of the thrust member and is inclined in a direction away from the second rotor. has.

[0031] With this configuration, in the damper device according to one embodiment, even if the second rotor is tilted with respect to the drive shaft, the thrust member still slides against the surface of the second rotor facing the thrust member at the second apex, so that the area of ​​the contact between the thrust member and the second rotor does not change significantly. As a result, the damper device according to one embodiment can suppress changes in the magnitude of the third sliding torque.

[0032] In addition, in one embodiment of the damper device, the second sliding part has a third apex that abuts against the second rotating body at a position facing the second rotating body, a fifth inclined surface connected to the third apex, extending in a direction away from the rotation axis of the second sliding part and inclined in a direction away from the second rotating body, and a sixth inclined surface connected to the third apex, extending in a direction approaching the rotation axis of the second sliding part and inclined in a direction away from the second rotating body.

[0033] With this configuration, in the damper device according to one embodiment, even if the second rotating body is tilted with respect to the drive shaft, the second sliding part still abuts and slides at the third apex against the surface of the second rotating body facing the second sliding part, so that the area of ​​the abutment between the second sliding part and the second rotating body does not change significantly. As a result, the damper device according to one embodiment can suppress changes in the magnitude of the third sliding torque. Effect of the Invention

[0034] According to various embodiments, it is possible to provide a damper device having a compact axial length, and also to provide a damper device capable of stably generating various variations of hysteresis torque. [Brief description of the drawings]

[0035] [Figure 1] FIG. 1 is a schematic top view showing a configuration of a damper device according to an embodiment. [Diagram 2] 2 is a schematic top view showing a configuration of the damper device shown in FIG. 1 with some components omitted. FIG. [Figure 3A] 2 is a schematic cross-sectional view showing the configuration of the damper device shown in FIG. 1 as viewed from line XX. [Figure 3B] 3B is a schematic cross-sectional view showing an enlarged view of a part of the damper device shown in FIG. 3A. [Figure 3C] 3C is a schematic cross-sectional view showing an enlarged schematic configuration of a portion of the damper device shown in FIG. 3B. [Figure 4] 1 is a schematic perspective view illustrating a configuration of a damper device according to one embodiment, exploded into its respective components. [Diagram 5] FIG. 2 is a schematic perspective view showing an enlarged view of a control plate of the damper device according to the embodiment. [Figure 6] 3 is a schematic diagram showing, in an enlarged scale, only a region surrounded by a dotted line in FIG. 2 in the damper device according to one embodiment. FIG. [Figure 7A] 1 is a schematic top view showing a state in which a first rotating body and a second rotating body are not rotating relative to each other in a damper device according to one embodiment. FIG. [Figure 7B] 1 is a schematic top view showing a state in which a second rotor is rotated relatively to a first rotor on the positive side at a torsion angle θ1° in a damper device according to one embodiment. FIG. [Figure 7C] 1 is a schematic top view illustrating a state in which a second rotating body is rotated relatively to the first rotating body at a torsion angle θ2° in the positive direction in a damper device according to one embodiment. FIG. [Figure 7D] 1 is a schematic top view illustrating a state in which a second rotating body is rotated at a torsion angle θ3° on the negative side relative to a first rotating body in a damper device according to one embodiment. FIG. [Figure 7E] 1 is a schematic top view showing a state in which a second rotating body is rotated at a torsion angle θ4° on the negative side relative to a first rotating body in a damper device according to one embodiment. FIG. [Figure 7F] 7B is a schematic top view showing a state in which the relative rotation of the second rotating body with respect to the first rotating body is being canceled from the state of FIG. 7E in the damper device according to one embodiment. FIG. [Figure 8] FIG. 4 is a schematic characteristic diagram illustrating the torsional characteristics of a damper device according to one embodiment. [Figure 9] FIG. 6 is a schematic cross-sectional view showing a configuration of a damper device according to a second embodiment. [Figure 10] FIG. 11 is a schematic cross-sectional view showing a configuration of a damper device according to a third embodiment. [Figure 11] FIG. 11 is a schematic cross-sectional view showing a configuration of a damper device according to a fourth embodiment. [Figure 12] FIG. 13 is a schematic cross-sectional view showing a configuration of a damper device according to a fifth embodiment. [Figure 13] FIG. 13 is a schematic cross-sectional view showing a configuration of a damper device according to a sixth embodiment. [Figure 14] 13 is an enlarged schematic view showing the relationship between a disc plate and a control plate in a damper device according to a sixth embodiment. FIG. [Figure 15] FIG. 13 is a schematic cross-sectional view showing a configuration of a damper device according to a seventh embodiment. [Figure 16] FIG. 13 is a schematic cross-sectional view showing a configuration of a damper device according to an eighth embodiment. [Figure 17] FIG. 13 is a schematic cross-sectional view showing a configuration of a damper device according to a ninth embodiment. [Figure 18] FIG. 23 is a schematic cross-sectional view showing a configuration of a damper device according to a tenth embodiment. [Figure 19] 1 is a schematic cross-sectional view showing a configuration of a damper device according to one embodiment. [Figure 20] 20 is a schematic cross-sectional view showing an enlarged schematic view of a portion of the configuration of the damper device shown in FIG. 19. [Figure 21] 1 is a schematic cross-sectional view showing a configuration of a damper device according to one embodiment. [Figure 22] 1 is a schematic top view showing a state in which a first rotating body and a second rotating body are not rotating relative to each other in a damper device according to one embodiment. FIG. [Figure 23] FIG. 4 is a schematic characteristic diagram illustrating the torsional characteristics of a damper device according to one embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0036] Various embodiments will be described below with reference to the accompanying drawings. Note that common components in the drawings are given the same reference numerals. Also, please note that components shown in one drawing may be omitted in another drawing for convenience of explanation. Furthermore, please note that the accompanying drawings are not necessarily drawn to scale.

[0037] 1. Structure of the damper device The outline of the overall configuration of the damper device according to one embodiment will be described with reference to FIGS. 1 to 6. FIG. 1 is a schematic top view showing the configuration of the damper device 1 according to one embodiment. FIG. 2 is a schematic top view showing the configuration of the damper device 1 shown in FIG. 1 with some components omitted. FIG. 3A is a schematic cross-sectional view showing the configuration of the damper device 1 shown in FIG. 1 as viewed from the line XX. FIG. 3B is a schematic cross-sectional view showing an enlarged schematic view of a part of the damper device 1 shown in FIG. 3A. FIG. 3C is a schematic cross-sectional view showing an enlarged schematic view of a part of the damper device 1 shown in FIG. 3B. FIG. 4 is a schematic perspective view showing the configuration of the damper device 1 according to one embodiment, exploded into each component. FIG. 5 is a schematic perspective view showing an enlarged schematic view of a control plate 300 of the damper device 1 according to one embodiment. FIG. 6 is a schematic view showing an enlarged schematic view of only the area surrounded by the dotted line in FIG. 2 in the damper device 1 according to one embodiment. It should be noted that, for the sake of simplicity, FIG. 6 does not show a pair of sheet members 420 in the elastic mechanism part 400 described later, and does not accurately show the contact relationship between each component (e.g., between the elastic mechanism part 400 and the disc plate 100, and between the elastic mechanism part 400 and the hub 200).

[0038] A damper device 1 according to one embodiment is provided on a power transmission path between a driving source (not shown) such as an engine or a motor and a transmission, etc., and power from the driving source is transmitted via a flywheel 2 and transmitted (output) to the transmission, etc. (see FIG. 3A).

[0039] The damper device 1 absorbs and damps torque vibrations. As shown in Fig. 1 to Fig. 5, the damper device 1 mainly includes a disk plate 100 as a first rotating body to which power is transmitted from a flywheel 2, a hub 200 as a second rotating body, a control plate 300, an elastic mechanism 400, a thrust member 500, a first sliding part 600, and a second sliding part 700. In this specification, the axial direction means a direction extending parallel to the rotation axis O, the radial direction means a direction perpendicular to the rotation axis O, and the circumferential direction means a direction going around the rotation axis O.

[0040] The flywheel 2 is an annular plate member fixed by a bolt 3 to a drive shaft Z connected to a drive source.

[0041] As shown in FIG. 3A, the power transmitted from the drive shaft Z to the flywheel 2 is transmitted to the disc plate 100 via the cover plate 10 and the first friction material 20, which are fixed to the flywheel 2 by bolts 4 and rotate integrally with the flywheel 2. A pressure plate 30 is fixed to the cover plate 10, and the cover plate 10 and the pressure plate 30 are configured to rotate integrally. A support plate 11 is further fixed to the flywheel 2 by bolts 4 together with the cover plate 10, and the support plate 11 supports a disc spring 40. The disc spring 40 biases the pressure plate 30 via the second friction material 21 so as to press it against a lining plate 101 in the disc plate 100, which will be described later, and transmits the power transmitted to the flywheel 2 to the disc plate 100 (lining plate 101) together with the cover plate 10.

[0042] The support plate 11, the pressure plate 30, and the disc spring 40 can function as a limiter that generates slippage (cuts off the power transmission from the cover plate 10 and the pressure plate 30 to the disc plate 100) when the damper device 1 is no longer able to absorb the torque fluctuation in the torsional direction. The limiter may be a combination of conventionally known structures.

[0043] 1-1.Disc plate 100 In the damper device 1, the power from a driving source such as an engine or a motor is transmitted to the disk plate 100 as a first rotating body arranged on the most upstream side on the power transmission path via the flywheel 2, as described above. The disk plate 100 is formed of, for example, a metal material, and as shown in Figs. 1 to 4, is provided rotatably around a rotation axis O with a hub 200 or the like as a second rotating body described later sandwiched therebetween. The disk plate 100 includes a first plate 100A and a second plate 100B as a pair of substantially disk-shaped plate members provided on both axial sides of the hub 200 (the second plate 100B is disposed facing the first plate 100A in the axial direction). As shown in Figs. 3A and 4, the first plate 100A and the second plate 100B have symmetrical shapes in the axial direction, and are connected to each other by a plurality of rivets 120 near the outer periphery and provided so as to be rotatable together with a substantially annular lining plate 101 between them, the positions of which in the axial direction of the first plate 100A and the second plate 100B are appropriately adjustable.

[0044] In addition, power from a driving source such as an engine or a motor is transmitted from the cover plate 10 and the pressure plate 30 to the lining plate 101 via the first friction material 20 and the second friction material 21 provided on the lining plate 101, and then transmitted from the lining plate 101 to the first plate 100A and the second plate 100B near the rivet 120.

[0045] The first plate 100A and the second plate 100B have a shape that bulges in the axial direction so as to cooperate with each other to form accommodation areas (four accommodation areas are shown in the example shown in FIG. 1) that accommodate the elastic mechanism part 400 described later in correspondence with each of the areas I to IV as shown in FIG. 1 and FIG. 2. Each accommodation area extends in a substantially linear or arc shape along the circumferential direction of the disc plate 100 to accommodate the first elastic member 410 and the pair of sheet members 420 (sheet member 420A and sheet member 420B) in the elastic mechanism part 400 that extends along the circumferential direction of the disc plate 100. Note that the areas I to IV refer to four areas each having a sector shape of approximately 90 degrees as shown in FIG. 1 when the damper device 1 is viewed from above.

[0046] 1, the first plate 100A and the second plate 100B form a first housing area 102a, a second housing area 102b, a third housing area 102c, and a fourth housing area 102d that extend in the circumferential direction and correspond to the areas I to IV, respectively. Note that, as described below, the hub 200 is provided with window holes 206a, 206b, 206c, and 206d that correspond to the first housing area 102a, the second housing area 102b, the third housing area 102c, and the fourth housing area 102d in each area.

[0047] Focusing on the region IV, as shown in FIG. 1, the first plate 100A and the second plate 100B have one end surface (fourth end surface) 104d as a side wall surrounding the fourth accommodation region 102d. 1 and the other end surface (fourth other end surface) 104d facing thereto. 2 The fourth end surface 104d 1 and the fourth other end surface 104d 2 Extends along the axial direction of the disc plate 100, for example.

[0048] Similarly, in the region I, the first plate 100A and the second plate 100B have one end surface (first end surface) 104a as a side wall surrounding the first accommodation region 102a. 1 and the other end surface (first other end surface) 104a facing the other end surface.2 Focusing on the region II, the first plate 100A and the second plate 100B have one end surface (second end surface) 104b as a side wall surrounding the second accommodation region 102b. 1 and the other end surface (second other end surface) 104b facing the other end surface. 2 Focusing on the region III, the first plate 100A and the second plate 100B have one end surface (third end surface) 104c as a side wall surrounding the third accommodation region 102c. 1 and the other end surface (third other end surface) 104c facing the other end surface. 2 These side walls abut (engage) with the elastic mechanism 400, which will be described later.

[0049] As shown in Fig. 3A, the lining plate 101 of the disc plate 100 is disposed at the same axial position (in a straight line in the radial direction) as the hub 200. Therefore, in each of the regions I to IV of the lining plate 101, as shown in Fig. 2 and Fig. 4, a notch 105 that allows circumferential movement (relative rotation) of the hub 200 is provided. In addition, the outer edge of the notch 105 functions as a restricting portion 106 that restricts excessive relative rotation of the hub 200.

[0050] Furthermore, the inner surface 110A of the first plate 100A can support a second elastic member 604 that can form a part of a first sliding part 600 described later. Note that, as described later, in the case where the first sliding part 600 is provided between the second plate 100B and the hub 200, the inner surface 110B of the second plate 100B can support the second elastic member 604.

[0051] Other details of the first plate 100A and the second plate 100B will be described later as appropriate.

[0052] 1-2. Hub 200 The hub 200 as the second rotating body functions as an output member in the damper device 1, is formed of, for example, a metal material, has a generally circular disk shape as a whole, is sandwiched between the first plate 100A and the second plate 100B, and is provided so as to be rotatable relative to the disk plate 100 (the first plate 100A and the second plate 100B) around the rotation axis O. As shown in Figs. 3A and 4, the hub 200 can be spline-coupled to an input shaft (not shown) of a transmission by inserting the input shaft through a through hole 203 formed in a generally cylindrical portion 202. The hub 200 is provided with a circular disk portion 205 extending radially outward from the cylindrical portion 202.

[0053] As described above, the disk portion 205 is provided with equally spaced windows 206a, 206b, 206c, and 206d corresponding to the first housing area 102a, the second housing area 102b, the third housing area 102c, and the fourth housing area 102d. These windows 206a to 206d provided in the hub 200 are provided in correspondence with the elastic mechanism 400, which will be described later. In other words, the elastic mechanism 400 is housed in each of the windows 206a to 206d.

[0054] In addition, in correspondence with the region I, the window hole 206a has an engagement portion (first engagement portion) 206a on one end side as shown in FIG. 1 and an opposing engaging portion on the other end side (first engaging portion on the other end side) 206a 2 and abuts (engages) with the elastic mechanism 400. Similarly, in correspondence with the region II, the window hole 206b has an engagement portion on one end side (a second engagement portion on one end side) 206b 1 and an opposing engaging portion on the other end side (a second engaging portion on the other end side) 206b. 2 The window hole 206c has an engagement portion (third engagement portion) 206c on one end side corresponding to the region III. 1 and an opposing engaging portion on the other end side (third engaging portion on the other end side) 206c 2and abuts (engages) with the elastic mechanism 400. In addition, the window hole 206d has an engagement portion on one end side (fourth engagement portion on one end side) 206d corresponding to the region IV. 1 and an opposing engaging portion on the other end side (fourth engaging portion on the other end side) 206d 2 and is in contact (engages) with the elastic mechanism portion 400.

[0055] Note that, when each of the windows 206a to 206d "contacts the elastic mechanism 400," it means that the windows contact a first elastic member 410 or a pair of sheet members 420, which will be described later.

[0056] Protrusions 207a, 207b, 207c, and 207d are provided at the radial end of the disk portion 205 in correspondence with the regions I to IV. The protrusions 207a to 207d are accommodated in notches 105 provided in the lining plate 101 so that the hub 200 can rotate relative to the disk plate 100. When the hub 200 rotates relatively through a predetermined torsional angle, the protrusions 207a to 207d come into contact with the restricting portion 106, which is the outer edge of the notch 105, and excessive relative rotation of the hub 200 is restricted.

[0057] 2 to 4, grooves 208a, 208b, 208c, and 208d for receiving axially extending portions 303a to 303d of a control plate 300 (described later) are provided radially inward of the aforementioned window holes 206a, 206b, 206c, and 206d. Note that, in the damper device 1 of one embodiment, the grooves 208a to 208d are provided continuously (integrally) with the window holes 206a to 206d, but are not limited thereto and may be provided in any portion of the disc portion 205.

[0058] 1-3.Control plate 300 The control plate 300 is made of a metal material such as spring steel, and has a generally circular ring shape. In the damper device 1 according to one embodiment, only one control plate 300 is provided, and is disposed in only one of the first housing space 100x between the first plate 100A and the hub 200 and the second housing space 100y between the second plate 100B and the hub 200 in the axial direction. FIG. 3A shows an example in which the control plate 300 is disposed in the first housing space 100x.

[0059] 2 to 5, the control plate 300 mainly includes a main portion 301 provided in a substantially annular shape, a radially extending portion 302 extending radially from the main portion 301 and coming into contact with an elastic mechanism portion 400 described later, and an axially extending portion 303 extending axially and at least partially housed in the hub 200 (the case where the axially extending portion is partially housed in the first rotating body 100 will be described later). The radially extending portion 302 is provided with a radially extending portion 302a in region I, a radially extending portion 302b in region II, a radially extending portion 302c in region III, and a radially extending portion 302d in region IV so as to correspond to the above-mentioned regions I to IV, respectively. Similarly, the axially extending portion 303 is provided with an axially extending portion 303a in region I, an axially extending portion 303b in region II, an axially extending portion 303c in region III, and an axially extending portion 303d in region IV, so as to correspond to each of the aforementioned regions I to IV.

[0060] As shown in FIG. 2 and other figures, the radially extending portions 302a to 302d are provided corresponding to the regions I to IV. The radially extending portion 302a is provided to abut against the first elastic member 410 (or one of the sheet members 420A and 420B constituting the pair of sheet members 420) accommodated in the first accommodation region 102a (window hole 206a). The radially extending portion 302b is provided to abut against the first elastic member 410 (or one of the sheet members 420A and 420B constituting the pair of sheet members 420) accommodated in the second accommodation region 102b (window hole 206b). 20B), the radially extending portion 302c is provided to abut against the first elastic member 410 (or one of the sheet members 420A and 420B constituting the pair of sheet members 420) accommodated in the third accommodating area 102c (window hole 206c), and the radially extending portion 302d is provided to abut against the first elastic member 410 (or one of the sheet members 420A and 420B constituting the pair of sheet members 420) accommodated in the fourth accommodating area 102d (window hole 206d).

[0061] The radially extending length of the radially extending portions 302a to 302d is not particularly limited as long as it is configured to ensure a sufficient contact area with the elastic mechanism portion 400 (the first elastic body 400, or either one of the sheet members 420A and 420B constituting the pair of sheet members 420).

[0062] In the following, as an embodiment, a case where the radially extending portion 302 has a total of four radially extending portions 302a, 302b, 302c, and 302d corresponding to the regions I to IV, respectively, will be described. However, the radially extending portion 302 may have only one to three of the radially extending portions 302a, 302b, 302c, and 302d. In this manner, a person skilled in the art can easily understand an embodiment in which the radially extending portion 302 has only one to three radially extending portions by reading the following description assuming that the remaining radially extending portions do not exist. For example, a person skilled in the art can easily understand an embodiment in which the radially extending portion 302 has only the radially extending portions 302a and 302c by reading the following description assuming that the remaining radially extending portions 302b and 302d do not exist.

[0063] 3A, when the control plate 300 is disposed in the first housing space 100x, the radially extending portions 302a to 302d face both the first plate 100A and the hub 200 in the axial direction. Therefore, the radially extending portions 302a to 302d have a surface that comes into sliding contact with a first sliding portion 600 (described later) disposed between the first plate 100A and the control plate 300 to generate a first sliding torque.

[0064] The axially extending portions 303a to 303d are arranged corresponding to regions I to IV, as shown in Figures 2 to 6, and the axially extending portion 303a is accommodated in groove portion 208a provided on the radial inside of window hole 206a, the axially extending portion 303b is accommodated in groove portion 208b provided on the radial inside of window hole 206b, the axially extending portion 303c is accommodated in groove portion 208c provided on the radial inside of window hole 206c, and the axially extending portion 303d is accommodated in groove portion 208d provided on the radial inside of window hole 206d.

[0065] 6, the axial extension portion 303a is accommodated in a position adjacent to the wall portion 208w that defines the groove portion 208a (at least in a position offset from the center position of the groove portion 208a). The axial extension portions 303b, 303c, and 303d are also accommodated in the same positions as the axial extension portion 303a in the corresponding groove portions 208b, 208c, and 208d.

[0066] Here, the axially extending portions 303a to 303d are not engaged or fitted with the hub 200 by any means in the corresponding grooves 208a to 208d, and are configured so that the hub 200 and the control plate 300 can rotate together only in certain cases. Therefore, the control plate 300 and the hub 200 do not always rotate together.

[0067] Here, the above-mentioned "predetermined case" will be described. For example, when the hub 200 rotates relative to the disc plate 100 in a predetermined direction (for example, in the L direction (counterclockwise direction) in Figs. 1 and 2) by a predetermined torsional angle or more, the axially extending portions 303a to 303d each come into contact with the wall portion 208w that defines the groove portion 208a. As a result, only when the hub 200 rotates relative to the disc plate 100 in a predetermined direction (for example, in the L direction (counterclockwise direction) in Figs. 1 and 2) by a predetermined torsional angle or more, the control plate 300 rotates relative to the disc plate 100 in a predetermined direction (L direction in Figs. 1 and 2) integrally with the hub 200. As a result, the radial extension 302a comes into sliding contact with a sliding surface (first sliding surface) 602a of the first sliding portion 600 described later, and a first sliding torque can be generated. Similarly, the radially extending portions 302b to 302d are also in sliding contact with the first sliding surface 602a of the first sliding portion 600, and are able to generate a first sliding torque. The mechanism by which the control plate 300 and the hub 200 can rotate integrally will be described in detail later.

[0068] On the other hand, in cases other than the above where the control plate 300 rotates integrally with the hub 200, the hub 200 basically rotates relative to the control plate 300. In this case, a second sliding portion 700 (described later) disposed between the hub 200 and the control plate 300 slides relative to the hub 200 or the control plate 300, thereby generating a second sliding torque.

[0069] In order to increase (or decrease) the magnitude of the first sliding torque, it is preferable that a commonly known friction material is separately applied to the surface of the radially extending parts 302a to 302d that is in sliding contact with the first sliding surface 602a of the first sliding part 600, or that a predetermined surface treatment is applied to the surface. This makes it possible to adjust the magnitude of the first sliding torque to a desired value.

[0070] In addition, in the case where a second sliding torque is generated by the second sliding part 700 described below sliding against the control plate 300, it is preferable that a commonly known friction material is separately applied to the surfaces of the radially extending parts 302a to 302d that come into sliding contact with the second sliding part 700 (the surfaces on the opposite side in the axial direction from the surface that comes into sliding contact with the first sliding surface 602a of the first sliding part 600) or that a predetermined surface treatment is applied thereto in order to increase (or decrease) the magnitude of the second sliding torque.

[0071] Incidentally, in the damper device 1 according to one embodiment shown in FIGS. 1 to 6, the first sliding torque, which is generated only in the above-mentioned "predetermined case", is appropriately set via the above-mentioned friction material, surface treatment, etc. so as to be larger than the second sliding torque.

[0072] 1-4. Elastic mechanism 400 1 to 4 and 6, the elastic mechanism 400 is mainly composed of a first elastic member 410 and a pair of sheet members 420 (sheet member 420A and sheet member 420B) that sandwich and support the first elastic member 410 from both sides in each of the regions I to IV, but the pair of sheet members 420 may be omitted. Note that, as shown in Figs. 1 to 4, one first elastic member 410 may be disposed in each of the regions I to IV, but two or more first elastic members 410 may be disposed in series.

[0073] As an example, a commonly known coil spring can be used as the first elastic member 410. Furthermore, the shape, structure, and the like of the sheet member 420A and the sheet member 420B are not particularly limited as long as they have a structure capable of supporting the first elastic member 410 by sandwiching it from both sides, and for example, a known one can be used.

[0074] In the embodiment shown in Figures 1 to 4, as an example, four accommodating areas are formed in the disc plate 100, namely, a first accommodating area 102a, a second accommodating area 102b, a third accommodating area 102c, and a fourth accommodating area 102d (corresponding to these, the hub 200 also has window holes 206a, 206b, 206c, and 206d, as described above), and one first elastic member 410 and a pair of sheet members 420 (sheet member 420A and sheet member 420B) are accommodated in each of these four accommodating areas, i.e., in correspondence with each of areas I to IV.

[0075] Here, when focusing on the region I, as shown in FIG. 1 and FIG. 2, the sheet member 420A is disposed on the first end surface 104a of the disk plate 100 (the first plate 100A and the second plate 100B). 1 , and a first engagement portion 206a on one end side provided on the hub 200 1 The sheet member 420B engages with the first other end surface 104a of the disc plate 100 (the first plate 100A and the second plate 100B). 2 , and a first engagement portion 206a on the other end side provided on the hub 200 2Similarly, in regions II to IV, the sheet members 420A and 420B constituting the pair of sheet members 420 engage with the disc plate 100 and the hub 200, respectively.

[0076] As mentioned above, the radial extensions 302a to 302d in the control plate 300 are arranged to abut against the first elastic member 410 (or either one of the sheet members 420A and 420B constituting the pair of sheet members 420) in each of regions I to IV, as shown in Figure 2, etc.

[0077] With the above configuration, the elastic mechanism 400 can elastically connect the disc plate 100 and the hub 200 in the rotational direction. In other words, when power from a drive source such as an engine or a motor is transmitted in the order of the disc plate 100, the elastic mechanism 400, and the hub 200, and the disc plate 100 and the hub 200 rotate relative to each other, the first elastic member 410 of the elastic mechanism 400 is compressed and deformed, thereby absorbing torque fluctuations.

[0078] 1-5. Thrust member 500 The thrust member 500 is disposed in one of the first housing space 100x and the second housing space 100y, which is different from the space in which the control plate 300 is disposed. That is, in the embodiment shown in Figs. 1 to 6, the control plate 300 is disposed in the first housing space 100x, and therefore the thrust member 500 is disposed in the second housing space 100y, not the first housing space 100x. Note that when the control plate 300 is disposed in the second housing space 100y, the thrust member 500 is disposed in the first housing space 100x.

[0079] In one embodiment disposed in the second housing space 100y, the thrust member 500 is disposed between the second plate 100B and the hub 200 as shown in FIG. 3A. The thrust member 500 may have an opening (second opening) 500a penetrating the cylindrical portion 202 of the hub 200. As a result, the thrust member 500 is rotatably supported by the outer circumferential surface of the cylindrical portion 202 of the hub 200 at an inner circumferential surface surrounding the opening 500a. The thrust member 500 is formed of, for example, a resin material, and has a substantially cylindrical fitting portion 501 and a main portion 502 that is substantially annular or cylindrical as a whole.

[0080] As shown in FIG. 3A, the fitting portion 501 corresponds to the fitting hole 112 provided in the second plate 100B, for example, and can be fitted (engaged) with the second fitting hole 112. As a result, the thrust member 500 is integrated with the second plate 100B (disk plate 100) and rotates together with the disk plate 100 around the rotation axis O. The fitting portion 501 may not be fitted into the fitting hole 112 provided in the second plate 100B, but may be fitted into another fitting hole (not shown) separately provided in the hub 200, for example, and rotate together with the hub 200 around the rotation axis O. Alternatively, the fitting portion 501 may be configured not to be fitted into either the second plate 100B or the hub 200.

[0081] 3A, the main portion 502 has a first surface 502x slidable relative to the second plate 100B and a second surface 502y slidable relative to the hub 200. This allows the main portion 502 to slide relative to the second plate 100B and / or the hub 200, and generate a sliding torque (third sliding torque) different from the above-described first sliding torque and second sliding torque.

[0082] 3B, a notch 502z extending in a substantially annular shape may be formed in the second surface 502y of the main portion 502. When such a notch 502z is provided, the area of ​​the second surface 502y that slides against the hub 200, and therefore the magnitude of the third sliding torque, can be adjusted by adjusting the size of the notch 502z.

[0083] In the damper device 1 according to the embodiment shown in FIGS. 1 to 6, the second elastic member 604 of the first sliding portion 600 biases the plate portion 602 in a direction approaching the control plate 300 (to the left in FIGS. 3A and 3B), as described later. At this time, a reaction force related to the bias is transmitted from the second elastic member 604 to the first plate 100A, so that the first plate 100A is slightly biased in a direction away from the control plate 300 (to the right in FIGS. 3A and 3B). In conjunction with this, the second plate 100B, which is integrated with the first plate 100A via the rivet 120, is also slightly biased in a direction approaching the control plate 300 (to the right in FIGS. 3A and 3B). As a result, the second surface 502y of the thrust member 500 is pressed against the hub 200, and the above-mentioned third sliding torque is generated.

[0084] This third sliding torque is always generated when the disc plate 100 and the hub 200 rotate relative to each other, and can be used to configure both a "small hysteresis torque" and a "large hysteresis torque" in the damper device 1. In the damper device 1 according to one embodiment shown in Figs. 1 to 6, the "small hysteresis torque" refers to the combined torque of the second sliding torque and the third sliding torque described above, and the "large hysteresis torque" refers to the combined torque of the first sliding torque and the third sliding torque described above.

[0085] 1-6. First sliding part 600 In one embodiment, the first sliding portion 600 is disposed between the disc plate 100 (first plate 100A) and the control plate 300, and slides against the radial extension portion 302 (radial extension portions 302a to 302d) of the control plate 300 to generate a first sliding torque.

[0086] As shown in Figures 3A, 3B and 4, the first sliding portion 600 of one embodiment can have a substantially annular plate portion 602 having a first sliding surface 602a that slides against the radial extending portion 302 (radial extending portions 302a to 302d) of the control plate 300, and a second elastic member 604 that urges the first sliding surface 602a of the plate portion 602 in a direction approaching the radial extending portion 302 of the control plate 300 (to the left on the paper in Figures 3A and 3B).

[0087] 4, the plate portion 602 may have an opening (first opening) 602A penetrating the cylindrical portion 202 of the hub 200. As a result, the plate portion 602 is rotatably supported by the outer circumferential surface of the cylindrical portion 202 of the hub 200 at an inner circumferential surface surrounding the opening 602A. In one embodiment, the plate portion 602 may be formed as a bush. As a result, the plate portion 602 is rotatably supported by the hub 200 simply and reliably, and therefore the ease of assembly of the plate portion 602 to the hub 200 can be improved. Furthermore, the plate portion 602 formed as a bush can suppress the hub 200 from tilting with respect to the drive axis Z.

[0088] As illustrated in FIG. 3C, the plate portion 602 has a first top portion 602a that abuts against the radially extending portion 302 of the control plate 300 on a first sliding surface 602a. 1 and the first top portion 602a 1 The first inclined surface 602a connected to 2 and the first top portion 602a 1 The second inclined surface 602a connected to 3 The first inclined surface 602a may have a first inclined surface 602b. 2 The first top portion 602a 1 The second inclined surface 602a extends in a direction away from the rotation axis of the first sliding part 600 (i.e., the rotation axis O) (upward in FIG. 3C) and can be inclined in a direction away from the control plate 300 (rightward in FIG. 3C). 3 The first top portion 602a 13C) toward the rotation axis (i.e., the rotation axis O) of the first sliding part 600 and inclines in the direction away from the control plate 300 (to the right in FIG. 3C). 1 The contact members 14 and 15 can slide in contact with each other at the positions 14 and 15.

[0089] 4, the plate portion 602 may have a first engagement portion 602B having a substantially annular shape and a second engagement portion 602C provided near the outer circumferential edge of the plate portion 602. The first engagement portion 602B has a plurality of projections 602B protruding in the radial direction on its outer circumferential surface. 1 The first engagement portion 602B can be inserted into and engaged with a hole 108 formed in the first plate 100A. The second engagement portion 602C can have a plurality of protrusions 602C arranged at intervals in the circumferential direction and protruding in the axial direction. 1 These multiple protrusions 602C 1 The first sliding part 600 can be inserted into and engaged with a recess (not shown) formed in the first plate 100A. This allows the first sliding part 600 to rotate integrally with the disc plate 100.

[0090] The second elastic member 604 is supported by the first engagement portion 602B of the plate portion 602 by inserting the first engagement portion 602B into the opening 604a. Such a second elastic member 604 abuts against the first plate 100A on one surface and abuts against the plate portion 602 on the other surface. This allows the second elastic member 604 to bias the plate portion 602 toward the control plate 300.

[0091] With this configuration, when the control plate 300 rotates relative to the disc plate 100, the first sliding portion 600 slides against the first apex 602a of the first sliding surface 602a. 1is pressed against the radially extending portion 302 to generate a first sliding torque.

[0092] The plate portion 602 may be formed of, for example, a resin material, a metal material composed of a compound containing a 3d transition metal, or the like. It is preferable that a commonly known friction material is separately applied to the first sliding surface 602a or a predetermined surface treatment is applied to increase (or decrease) the magnitude of the first sliding torque generated by sliding with the radially extending portion 302. This makes it possible to adjust the magnitude of the first sliding torque to a desired magnitude.

[0093] The second elastic member 604 may be, but is not limited to, a commonly known disc spring. The second elastic member 604 biases the first sliding surface 602a of the plate portion 602 in a direction approaching the radially extending portion 302 of the control plate 300 (to the left in the drawing in Figs. 3A and 3B) while being supported by the first plate 100A, as described above. Meanwhile, a reaction force related to the bias is transmitted from the second elastic member 604 to the first plate 100A.

[0094] 1-7. Second sliding portion 700 Referring to FIG. 3A, in one embodiment, the second sliding portion 700 is disposed between the control plate 300 and the hub 200, and slides against at least the hub 200 to generate a second sliding torque.

[0095] In one embodiment, the second sliding part 700 has a generally annular shape as a whole, and has a second sliding surface 702a that can slide against the hub 200. Therefore, in cases other than the above-mentioned "predetermined cases," the second sliding part 700 rotates relative to the hub 200, and the second sliding surface 702a slides against the hub 200 to generate a second sliding torque.

[0096] Incidentally, the control plate 300 is urged in a direction approaching the hub 200 in conjunction with the plate portion 602 of the first sliding portion 600 being urged in a direction approaching the control plate 300 by the second elastic member 604 of the first sliding portion 600 described above. Furthermore, the urged control plate 300 urges the second sliding portion 700 in a direction approaching the hub 200. As a result, the second sliding surface 702a of the second sliding portion 700 is pressed against the hub 200, and the second sliding torque is reliably generated. In other words, the urging force of the second elastic member 604 is transmitted in sequence to the plate portion 602, the control plate 300, and the second sliding portion 700.

[0097] The second sliding portion 700 may have a second sliding surface 702b that can slide against the control plate 300 to generate a second sliding torque. If the control plate 300 and the second sliding portion 700 are configured to be relatively rotatable, the second sliding surface 702b and the radially extending portion 302 of the control plate 300 slide against each other to generate a second sliding torque.

[0098] In one embodiment, the second sliding part 700 may be configured to engage with the control plate 300 and rotate integrally with the control plate 300, or may be configured not to engage with either the control plate 300 or the hub 200, or may be configured to engage with, for example, the first plate 100A.

[0099] As with other sliding surfaces, it is preferable that a commonly known friction material is separately applied to the second sliding surfaces 702a and 702b, or that a predetermined surface treatment is applied to the second sliding surfaces 702a and 702b.

[0100] 1-8. Relationship between the first sliding portion 600 and the thrust member 500 In a typical damper device, if no measures are taken, there is usually a possibility that a misalignment will occur between the center of rotation on the input side and the center of rotation on the output side, in other words, there is a possibility that a misalignment will occur between the center of rotation of the drive shaft Z and the center of rotation of the input shaft of the transmission. For example, such a misalignment may occur, firstly, when the input shaft of the transmission and the damper device 1 are assembled, and secondly, when the damper device 1 functions as a limiter in an actually used state.

[0101] When such a misalignment occurs, the rotation axis of the hub 200 through which the input shaft of the transmission is inserted is inclined with respect to the drive shaft Z (and thus the disc plate 100 connected to the drive shaft Z, etc.). Accordingly, the first sliding part 600 (i.e., the first sliding surface 602a of the plate part 602) supported by the hub 200 is inclined with respect to the drive shaft Z, and thus with respect to the flywheel 2 and the disc plate 100 connected to the flywheel 2. In this case, the first sliding surface 602a of the first sliding part 600 may not slide with respect to the control plate 300 as originally intended. As an example, the location where the first sliding surface 602a of the first sliding part 600 abuts against and slides on the control plate 300 may be shifted in the radial direction from the originally intended location (i.e., the action radius of the first sliding surface 602a with respect to the control plate 300 may change compared to the originally intended action radius). In this case, the area of ​​the contact and sliding portion between the first sliding surface 602a and the control plate 300 may change, which may change the magnitude of the first sliding torque.

[0102] In order to suppress such a change in the sliding of the first sliding surface 602a against the control plate 300, the following configuration can be adopted.

[0103] In one embodiment, a bearing (not shown) that rotatably supports the input shaft of the transmission may be disposed on the output side of the damper device 1, i.e., on the right side of the damper device 1 in Figs. 3A and 3B (for such a bearing, refer to the bearing B that rotatably supports the input shaft S of the transmission in Figs. 19 and 21, which will be referred to later). In this case, of the first sliding part 600 and the thrust member 500, it is the first sliding part 600 that is disposed closer to such a bearing (in other words, the transmission). That is, the distance between the bearing and the first sliding part 600 is smaller than the distance between the bearing and the thrust member 500.

[0104] In one embodiment, a gap (gap G shown in FIG. 3B ) is provided between an inner circumferential surface surrounding an opening (first opening) 602A formed in the plate portion 602 of the first sliding portion 600 (located closer to the bearing) and an outer circumferential surface of the hub 200. 1 ) is provided between the inner circumferential surface surrounding the opening (second opening) 500a formed in the thrust member 500 (located farther from the bearing) and the outer circumferential surface of the hub 200 (the gap G shown in FIG. 3B 2 ) can be formed. As a result, the angle at which the hub 200 is inclined with respect to the drive axis Z, and therefore the angle at which the first sliding surface 600a of the first sliding part 600 supported by the hub 200 is inclined with respect to the control plate 300, can be made smaller than (G 1 >G 2 As a result, it is possible to suppress the possibility that the radius of action of the first sliding surface 602a with respect to the control plate 300 will change compared to the originally intended radius of action.

[0105] Furthermore, in one embodiment, as described above, the first sliding portion 600 is in contact with the radially extending portion 302 of the control plate 300 by the first apex 602a of the first sliding surface 602a. 1As a result, even if the hub 200 is tilted with respect to the drive axis Z, the first sliding surface 602a can still slide against the control plate 300 at the first top portion 602a. 1 Since the first sliding surface 602a and the control plate 300 come into contact and slide at this position, there is no large change in the area of ​​the contact portion between the first sliding surface 602a and the control plate 300. As a result, the change in the magnitude of the first sliding torque is suppressed.

[0106] Furthermore, in one embodiment, as described above, the plate portion 602 of the first sliding portion 600 may be formed as a bush. This allows the plate portion 602 to simply and effectively prevent the hub 200 from tilting with respect to the drive axis Z, i.e., prevent the action radius of the first sliding surface 602a against the control plate 300 from changing compared to the originally intended action radius.

[0107] 2. Operation of the damper device Next, the operation of the damper device 1 having the above configuration will be described with reference to Fig. 7A to Fig. 7F and Fig. 8. Fig. 7A is a schematic top view showing a state in which the first rotating body (disk plate 100) and the second rotating body (hub 200) are not rotating relative to each other in the damper device 1 according to one embodiment. Fig. 7B is a schematic top view showing a state in which the second rotating body (hub 200) is rotating relatively to the first rotating body (disk plate 100) at a torsion angle θ1° on the positive side in the damper device 1 according to one embodiment. Fig. 7C is a schematic top view showing a state in which the second rotating body (hub 200) is rotating relatively to the first rotating body (disk plate 100) at a torsion angle θ2° on the positive side in the damper device 1 according to one embodiment. FIG. 7D is a schematic top view showing a state in which the second rotating body (hub 200) rotates at a torsion angle θ3° relative to the first rotating body (disk plate 100) on the negative side in the damper device 1 according to one embodiment. FIG. 7E is a schematic top view showing a state in which the second rotating body (hub 200) rotates at a torsion angle θ4° relative to the first rotating body (disk plate 100) on the negative side in the damper device 1 according to one embodiment. FIG. 7F is a schematic top view showing a state in which the relative rotation of the second rotating body (hub 200) with respect to the first rotating body (disk plate 100) is being eliminated from the state shown in FIG. 7E in the damper device 1 according to one embodiment. FIG. 8 is a schematic characteristic diagram showing the torsion characteristic in the damper device 1 according to one embodiment. 7A to 7F, for the sake of convenience, the pair of sheet members 420 (sheet member 420A and sheet member 420B) in the elastic mechanism section 400 are omitted.

[0108] 7A shows a state in which power from a drive source such as an engine or a motor is transmitted to the damper device 1, but no relative rotation occurs between the disc plate 100 and the hub 200 (torsion angle 0°). In this case, none of the first sliding torque, second sliding torque, and third sliding torque described above is generated.

[0109] 7A, in a state where no relative rotation occurs between the disc plate 100 and the hub 200, the axially extending portions 303a to 303d of the control plate 300 are accommodated in the corresponding grooves 208a to 208d of the hub 200 at positions adjacent to the wall portions 208w that define the grooves 208a to 208d. In other words, gaps of the same distance are formed between the axially extending portion 303a and the wall portion 208w, between the axially extending portion 303b and the wall portion 208w, between the axially extending portion 303c and the wall portion 208w, and between the axially extending portion 303d and the wall portion 208w, and the axially extending portions 303a to 303d are not in contact with the wall portion 208w.

[0110] Next, FIG. 7B shows a case where a relative rotation occurs between the disc plate 100 and the hub 200 from the state of FIG. 7A, and a twist of θ1° occurs in the positive direction. Here, the positive side refers to, for example, a case where the hub 200 rotates (moves) in the R direction (clockwise direction in FIG. 7B) relative to the disc plate 100. In this case, the hub 200 rotates relative to the disc plate 100 while bending the first elastic member 410. In addition, at a twist angle of 0° to θ1°, the distance of the gap between the axial extension parts 303a to 303d and the corresponding wall parts 208w gradually increases, so that the two (the axial extension parts 303 and the wall parts 208w) are still not in contact with each other. Therefore, the control plate 300 is not affected by the relative rotation of the hub 200 with respect to the disc plate 100 and does not rotate relative to the disc plate 100. On the other hand, the control plate 300 rotates relative to the hub 200 (the hub 200 rotates relative to the control plate 300).

[0111] In this case (state of FIG. 7A to state of FIG. 7B), as described above with reference to FIG. 3A, the third sliding torque is generated by sliding between the second surface 502y of the thrust member 500, which rotates integrally with the disc plate 100, and the hub 200 (disk portion 205). In addition, based on the relative rotation between the hub 200 and the control plate 300, the second sliding surface 702a of the second sliding part 700 slides against the hub 200 (disk portion 205), generating the second sliding torque. Note that, as described above, in the case where the second sliding part 700 is rotatable relative to the control plate 300, the second sliding torque may be generated by sliding between the sliding surface 702b of the second sliding part 700 and the radially extending part 302 (radially extending parts 302a to 302d) of the control plate 300.

[0112] As described above, in the state of FIG. 7A to the state of FIG. 7B, the combined torque of the third sliding torque and the second sliding torque is generated as the hysteresis torque, and the hysteresis torque in this case corresponds to the "small hysteresis torque".

[0113] Next, Fig. 7C shows a case where the relative rotation of the hub 200 with respect to the disc plate 100 progresses further from the state of Fig. 7B, and a twist of θ2° occurs in the positive direction. In this case, the hub 200 rotates relative to the disc plate 100 while further bending the first elastic member 410. Furthermore, at a twist angle of θ2°, the protrusions 207a to 207d of the hub 200 each abut against the restricting portion 106 provided on the lining plate 101. As a result, the hub 200 is restricted from rotating relative to the positive direction by θ2° or more, and therefore the twist angle of θ2° can be regarded as the maximum twist angle on the positive side.

[0114] At a torsion angle of θ1° to θ2°, the gap between the axially extending portions 303a to 303d and the corresponding wall portions 208w further increases, so that the two still do not come into contact with each other. Therefore, the control plate 300 is not affected by the relative rotation of the hub 200 with respect to the disc plate 100, and does not rotate relative to the disc plate 100. On the other hand, the control plate 300 rotates relative to the hub 200 (the hub 200 rotates relative to the control plate 300).

[0115] In this case (from the state of FIG. 7B to the state of FIG. 7C), the third sliding torque and the second sliding torque are generated, as in the case of the transition from the state of FIG. 7A to the state of FIG. 7B. Therefore, a "small hysteresis torque" is generated also in the state of FIG. 7B to the state of FIG. 7C.

[0116] Next, FIG. 7D shows a case where a relative rotation occurs between the disc plate 100 and the hub 200 from the state of FIG. 7A, and a twist of θ3° occurs on the negative side. Here, the negative side refers to, for example, a case where the hub 200 rotates (moves) relatively to the disc plate 100 in the L direction (counterclockwise direction in FIG. 7D). In this case, the hub 200 rotates relative to the disc plate 100 while bending the first elastic member 410. Also, at a torsion angle of 0° to θ3°, the distance of the gap between the axial extension parts 303a to 303d and the corresponding wall parts 208w gradually decreases, and at a torsion angle of θ3°, the two come into contact (the gap no longer exists). Therefore, at a torsion angle of 0° to θ3°, the control plate 300 is not affected by the relative rotation of the hub 200 to the disc plate 100 and does not rotate relative to the disc plate 100 yet. On the other hand, the control plate 300 rotates relative to the hub 200 (the hub 200 rotates relative to the control plate 300).

[0117] Incidentally, the radially extending portions 302a to 302d of the control plate 300 are basically in contact with the elastic mechanism portion 400 in each of the regions I to IV. For example, when the hub 200 is not rotating relative to the disc plate 100 (the state of FIG. 7A) and when the hub 200 is rotating relative to the disc plate 100 on the positive side (the states of FIG. 7B and FIG. 7C), the radially extending portions 302a to 302d are always in contact with the elastic mechanism portion 400. However, as the torsion angle approaches 0° to θ3°, this contact relationship is gradually dissolved. That is, at torsion angles of 0° to θ3°, a gap is formed between the radially extending portions 302a to 302d of the control plate 300 and the first elastic member 410 (elastic mechanism portion 400), and the distance (size) of the gap gradually increases. This is linked to the fact that, as described above, there are no gaps between the axially extending portions 303a to 303d and the wall portion 208w.

[0118] In this case (from the state of FIG. 7A to the state of FIG. 7D), the third sliding torque and the second sliding torque described above are generated, as in the case of the transition from the state of FIG. 7A to the state of FIG. 7B. Therefore, a "small hysteresis torque" is generated also in the states of FIG. 7A to FIG. 7D.

[0119] Next, FIG. 7E shows a case where the relative rotation of the hub 200 with respect to the disc plate 100 progresses further from the state of FIG. 7D, and a twist of θ4° occurs on the negative side. In this case, the hub 200 rotates relative to the disc plate 100 while further bending the first elastic member 410. In addition, at a twist angle of θ4°, the protrusions 207a to 207d of the hub 200 abut against the restricting portion 106 provided on the lining plate 101. As a result, the hub 200 is restricted from rotating relative to the negative side by θ4° or more, and the twist angle of θ4° can be regarded as the maximum twist angle on the negative side. In this case, the gap formed in the state of FIG. 7D remains between the radially extending portions 302a to 302d of the control plate 300 and the elastic mechanism portion 400 (first elastic member 410).

[0120] At a torsion angle of θ3° to θ4°, the axially extending portions 303a to 303d come into contact with the corresponding wall portions 208w. Therefore, the control plate 300 (axially extending portions 303a to 303d) is guided by the hub 200 (wall portion 208w) and rotates together with the hub 200 (integrally with the hub 200) relative to the disc plate 100 in the L direction.

[0121] In this case (the state of FIG. 7D to the state of FIG. 7E), the disc plate 100 and the hub 200 rotate relative to each other, so the third sliding torque described above occurs, as in the case of transition from the state of FIG. 7A to the state of FIG. 7B. In this case, the control plate 300 also rotates relative to the disc plate 100, so as described above, the first sliding torque described above occurs between the first sliding surface 602a of the first sliding portion 600 and the radial extension portion 302 (radial extension portions 302a to 302d) of the control plate 300. In this case, the hub 200 and the control plate 300 rotate together, so the second sliding torque does not occur. In addition, the first sliding torque generated in this case is set in advance to be larger than the second sliding torque. For such setting, the friction coefficients of the first sliding surface 602a and the radial extension portions 302a to 302d that generate the first sliding torque are appropriately adjusted by any of the methods described above.

[0122] From the above, in the state of FIG. 7D to the state of FIG. 7E, the combined torque of the third sliding torque and the first sliding torque is generated as hysteresis torque, and the hysteresis torque in this case corresponds to the "large hysteresis torque".

[0123] Next, Fig. 7F shows a state in which the relative rotation of the hub 200 with respect to the disc plate 100 is being eliminated from the state of Fig. 7E, and the hub 200 is in the middle of a process of transition from the maximum torsion angle θ4° to a torsion angle of 0° on the negative side. In this case, the hub 200 moves relatively in the R direction toward a torsion angle of 0° while gradually eliminating the deflection of the first elastic member 410. In other words, the torsion angle in the state of Fig. 7F can be said to be, for example, a torsion angle between θ3° and θ4°.

[0124] In this case, when the hub 200 first moves relatively in the R direction from the torsion angle θ4° (moves so as to eliminate the relative rotation in the L direction), the abutting relationship between the axially extending portions 303a to 303d and the corresponding wall portions 208w is eliminated, and a gap is formed between them again. In other words, the rotation of the control plate 300 in the R direction (relative rotation with respect to the disc plate 100) cannot be guided by the hub 200. Therefore, a slight time difference occurs between the timing at which the relative rotation of the hub 200 on the negative side with respect to the disc plate 100 is eliminated and the timing at which the relative rotation of the control plate 300 on the negative side with respect to the disc plate 100 is eliminated.

[0125] When the hub 200 moves relatively in the R direction by a predetermined angle (for example, the predetermined angle is α°) in order to eliminate the negative relative rotation from the torsion angle θ4° before the control plate 300 (without guiding the control plate 300), the gaps between the radial extensions 302a to 302d of the control plate 300 and the elastic mechanism 400, which were formed in the state of FIG. 7D (and FIG. 7E), gradually become smaller and finally disappear. As a result, the radial extensions 302a to 302d of the control plate 300 and the elastic mechanism 400 come into contact with each other again. In this state, the elastic mechanism 400 is still bent, so the elastic mechanism 400 presses (biases) the control plate 300 in the R direction. As a result, the control plate 300 rotates relatively to the disc plate 100 in the R direction this time based on the biasing force due to the bending of the elastic mechanism 400.

[0126] To further explain the above flow, from the torsion angle θ4° to θ4-α°, only the hub 200 rotates relative to the disc plate 100 in the R direction, so that the third sliding torque and the second sliding torque are generated, as in the case of transition from the state of FIG. 7A to the state of FIG. 7B. In other words, a "small hysteresis torque" is generated. On the other hand, from θ4-α° to 0°, not only the hub 200 but also the control plate 300 rotates relative to the disc plate 100 in the R direction, so that the third sliding torque and the first sliding torque are generated, as in the case of transition from the state of FIG. 7D to the state of FIG. 7E. In other words, a "large hysteresis torque" is generated.

[0127] Based on the flow of operations of the damper device 1 described above with reference to FIGS. 7A to 7F, the torsional characteristics of the damper device 1 are shown in FIG.

[0128] Incidentally, the "large hysteresis torque" generated only on the negative side as described above, that is, the hysteresis torque obtained by adding up the first sliding torque and the third sliding torque, is preferably used, for example, in a hybrid vehicle, when the engine is stopped and the vehicle is driven only by the motor, to absorb torque fluctuations generated when the engine is started under certain conditions. Also, as described above, the "small hysteresis torque", that is, the hysteresis torque obtained by adding up the second sliding torque and the third sliding torque, can be generated on the positive side. In this way, the damper device 1 according to one embodiment can generate a relatively small hysteresis torque on the positive side and a relatively large hysteresis torque on the negative side while making the axial length of the damper device 1 compact by consolidating the control plate 300 into one plate, and can stably generate various variations of hysteresis torque. Furthermore, in the damper device 1 according to one embodiment, the generation of the first sliding torque is concentrated on the radially extending portion 302 of the control plate 300 via the first sliding portion 600, so that the design of the control plate 300 in terms of its shape, structure, strength, etc. can be made relatively easy.

[0129] 3. Variations 3-1. Second embodiment Next, the configuration of the damper device 1 according to the second embodiment will be described with reference to FIG. 9. FIG. 9 is a schematic cross-sectional view showing the configuration of the damper device 1 according to the second embodiment. FIG. 9 is a diagram for simply explaining that the damper device 1 according to the second embodiment has the following different configuration from the damper device 1 according to the first embodiment, and focuses on the portion related to region I. Therefore, for the sake of convenience, some components common to the damper device 1 according to the first embodiment shown in FIG. 3A and the damper device 1 according to the second embodiment shown in FIG. 9 are expressed as being slightly different, but it should be understood that the shapes and the like of each component according to both embodiments are common unless otherwise specified, except for the following different configurations.

[0130] The damper device 1 according to the second embodiment has a configuration generally similar to that of the damper device 1 according to the above-described embodiment, but differs from the above-described embodiment in the configurations of the thrust member 500 and the first sliding portion 600. Note that, in the damper device 1 according to the second embodiment, detailed description of the same configuration as that of the damper device 1 according to the above-described embodiment will be omitted.

[0131] The thrust member 500 in the damper device 1 according to the second embodiment further includes a fourth elastic member 505 that biases the integral component in a direction approaching the hub 200 (to the right in FIG. 9 ) in addition to the aforementioned substantially cylindrical fitting portion 501 and substantially annular main portion 502. The fourth elastic member 505 may be, but is not limited to, a commonly known disc spring.

[0132] On the other hand, the first sliding portion 600 in the damper device 1 according to the second embodiment does not have the second elastic member 604 which is a component in the above embodiment, and is composed of only a plate portion 602.

[0133] With the above-described configuration, the damper device 1 according to the second embodiment has the second surface 502y of the thrust member 500 pressed against the hub 200 (disk portion 205) by the biasing force of the fourth elastic member 505. This makes it possible to reliably and efficiently generate the above-described third sliding torque when the disc plate 100 and the hub 200 rotate relatively to each other.

[0134] On the other hand, in conjunction with the fourth elastic member 505 biasing the second surface 502y in a direction approaching the hub 200, a reaction force associated with the bias is transmitted from the fourth elastic member 505 to the second plate 100B. As a result, the second plate 100B is slightly biased in a direction away from the hub 200 (to the left in FIG. 9). In conjunction with this, the first plate 100A, which is integrated with the second plate 100B via the rivet 120, is also slightly biased in a direction approaching the control plate 300 (to the left in FIG. 9). This biasing force transmitted to the first plate 100A can be substituted for the biasing force by the second elastic member 604 according to one embodiment. Therefore, the first sliding portion 600 in the damper device 1 of the second embodiment is capable of generating a first sliding torque between the first sliding surface 602a of the first sliding portion 600 and the radial extending portion 302 of the control plate 300, even if the second elastic member 604, which was a component part in the first embodiment, is omitted.

[0135] Although not shown in FIG. 9, the plate portion 602 has a first top portion 602a that abuts against the radially extending portion 302 of the control plate 300 on the first sliding surface 602a, as described above with reference to FIG. 1 and the first top portion 602a 1 The first inclined surface 602a connected to 2 and the first top portion 602a 1 The second inclined surface 602a connected to 3 and

[0136] As described above with reference to FIG. 3B, the gap G between the inner circumferential surface surrounding the opening (first opening) 602A formed in the plate portion 602 and the outer circumferential surface of the hub 2001 However, a gap G is provided between the inner peripheral surface surrounding the opening (second opening) 500a formed in the thrust member 500 and the outer peripheral surface of the hub 200. 2 It can be made smaller.

[0137] 3-2.Third embodiment Next, the configuration of the damper device 1 according to the third embodiment will be described with reference to FIG. 10. FIG. 10 is a schematic cross-sectional view showing the configuration of the damper device 1 according to the third embodiment. FIG. 10 is a diagram for simply explaining that the damper device 1 according to the third embodiment has the following different configuration from the damper device 1 according to the first embodiment, and focuses on the portion related to region I. Therefore, for the sake of convenience, some components common to the damper device 1 according to the first embodiment shown in FIG. 3A and the damper device 1 according to the third embodiment shown in FIG. 10 are expressed as being slightly different, but except for the following different configurations, it should be understood that the shapes and the like of each component according to both embodiments are common unless otherwise specified.

[0138] The damper device 1 according to the third embodiment has a configuration generally similar to that of the damper device 1 according to the above-described embodiment, but differs from the above-described embodiment in the configurations of the first sliding part 600 and the second sliding part 700. Note that, in the damper device 1 according to the third embodiment, detailed description of the same configuration as that of the damper device 1 according to the above-described embodiment will be omitted.

[0139] The second sliding portion 700 in the damper device 1 according to the third embodiment includes an integral structure having a second sliding surface 702a (and 702b) with a substantially annular shape, and further includes a third elastic member 705 that biases the integral structure in a direction approaching the hub 200 (to the left in FIG. 10). The third elastic member 705 may be, but is not limited to, a commonly known disc spring.

[0140] On the other hand, the first sliding portion 600 in the damper device 1 according to the third embodiment does not have the second elastic member 604 which is a component in the above embodiment, and is composed of only a plate portion 602.

[0141] With the above-described configuration, the damper device 1 according to the third embodiment has the second sliding surface 702a of the second sliding portion 700 pressed against the hub 200 (disk portion 205) by the biasing force of the third elastic member 705. This makes it possible to reliably and efficiently generate the above-described second sliding torque when the disc plate 100 and the hub 200 rotate relatively to each other and when the hub 200 rotates relatively to the control plate 300 (the control plate 300 rotates relative to the hub 200).

[0142] On the other hand, in conjunction with the third elastic member 705 biasing the second sliding surface 702a in a direction in which it is pressed against the hub 200, a reaction force associated with the bias is transmitted from the third elastic member 705 to the control plate 300. As a result, the control plate 300 is slightly biased in a direction approaching the first plate 100A (to the right in FIG. 10). As a result, in the damper device 1 according to the third embodiment, the radial extension portion 302 of the control plate 300 is pressed against the first sliding surface 602a of the first sliding portion 600, so that the first sliding torque can be generated reliably and efficiently. In this configuration, since the control plate 300 is biased in a direction approaching the first plate 100A, even if the second elastic member 604, which was a component in the first embodiment, is omitted, it is possible to generate the first sliding torque between the first sliding surface 602a of the first sliding portion 600 and the radial extension portion 302 of the control plate 300.

[0143] Although not shown in FIG. 10, the plate portion 602 has a first top portion 602a that abuts against the radially extending portion 302 of the control plate 300 on the first sliding surface 602a, as described above with reference to FIG. 1 and the first top portion 602a 1 The first inclined surface 602a connected to 2 and the first top portion 602a1 The second inclined surface 602a connected to 3 and

[0144] As described above with reference to FIG. 3B, the gap G between the inner circumferential surface surrounding the opening (first opening) 602A formed in the plate portion 602 and the outer circumferential surface of the hub 200 1 However, a gap G is provided between the inner peripheral surface surrounding the opening (second opening) 500a formed in the thrust member 500 and the outer peripheral surface of the hub 200. 2 It can be made smaller.

[0145] 3-3.Fourth embodiment Next, the configuration of the damper device 1 according to the fourth embodiment will be described with reference to FIG. 11. FIG. 11 is a schematic cross-sectional view showing the configuration of the damper device 1 according to the fourth embodiment. FIG. 11 is a diagram for simply explaining that the damper device 1 according to the fourth embodiment has the following different configuration from the damper device 1 according to the first embodiment, and focuses on the portion related to region I. Therefore, for the sake of convenience, some components common to the damper device 1 according to the first embodiment shown in FIG. 3A and the damper device 1 according to the fourth embodiment shown in FIG. 11 are expressed as if they are slightly different, but it should be understood that the shapes and the like of each component according to both embodiments are basically the same except for the following different configurations.

[0146] The damper device 1 according to the fourth embodiment has a configuration generally similar to that of the damper device 1 according to the above-described embodiment, but differs from that of the above-described embodiment in the configuration of the first sliding part 600. Note that, in the damper device 1 according to the fourth embodiment, detailed description of the same configuration as that of the damper device 1 according to the above-described embodiment will be omitted.

[0147] The first sliding part 600 in the damper device 1 according to the fourth embodiment is similar to that in the first embodiment in that it is composed of a plate part 602 and a second elastic member 604x (second elastic member 604 in the first embodiment), but the second elastic member 604x biases the plate part 602 in a direction approaching the first plate 100A (rightward in FIG. 11) rather than in a direction approaching the control plate 300 (leftward in FIG. 11). Also, unlike the first embodiment, the first sliding part 600 of the damper device 1 according to the fourth embodiment is configured to engage with the control plate 300 (for example, the plate part 602 engages with the radial extension part 302 of the control plate 300). Therefore, the first sliding part 600 can rotate integrally with the control plate 300. The second elastic member 604x can be the same as the second elastic member 604 according to the first embodiment.

[0148] The damper device 1 according to the fourth embodiment has the above-mentioned configuration, and when the control plate 300 and the disc plate 100 rotate relative to each other (that is, the above-mentioned "predetermined case"), the first sliding surface 602a of the first sliding part 600 is pressed against the inner surface 110A of the first plate 100A, so that the first sliding torque can be reliably and efficiently generated between the first sliding surface 602a and the inner surface 110A of the first plate 100A. In one embodiment, as shown in FIG. 3A, the surface of the plate part 602 facing the control plate 300 is referred to as the first sliding surface 602a. On the other hand, in the fourth embodiment, as shown in FIG. 11, the surface of the plate part 602 facing the first plate 100A is referred to as the first sliding surface 602a. Therefore, the first sliding surface 602a should be understood as a surface that generates the first sliding torque in the first sliding part 600.

[0149] On the other hand, in conjunction with the second elastic member 604x biasing the first sliding surface 602a in a direction approaching the first plate 100A, a reaction force associated with the bias is transmitted from the second elastic member 604x to the control plate 300. As a result, the control plate 300 is slightly biased in a direction approaching the hub 200 (leftward in the drawing in FIG. 11). As a result, in the damper device 1 according to the fourth embodiment, the second sliding surface 702a of the second sliding part 700 is pressed against the hub 200 (disk part 205) by a reaction force associated with the biasing force of the second elastic member 604x. Therefore, when the hub 200 and the control plate 300 rotate relatively to each other, it is possible to reliably and efficiently generate the second sliding torque.

[0150] Although not shown in FIG. 11, the plate portion 602 has a first top portion 602a that abuts against the first plate 100A on the first sliding surface 602a as described above with reference to FIG. 1 and the first top portion 602a 1 , extends in a direction away from the rotation axis O, and is inclined in a direction away from the first plate 100A. 2 and the first top portion 602a 1 , which extends toward the rotation axis O and is inclined in a direction away from the first plate 100A. 3 and

[0151] As described above with reference to FIG. 3B, the gap G between the inner circumferential surface surrounding the opening (first opening) 602A formed in the plate portion 602 and the outer circumferential surface of the hub 200 1 However, a gap G is provided between the inner peripheral surface surrounding the opening (second opening) 500a formed in the thrust member 500 and the outer peripheral surface of the hub 200. 2 It can be made smaller.

[0152] Fifth embodiment Next, the configuration of the damper device 1 according to the fifth embodiment will be described with reference to FIG. 12. FIG. 12 is a schematic cross-sectional view showing the configuration of the damper device 1 according to the fifth embodiment. FIG. 12 is a diagram for simply explaining that the damper device 1 according to the fifth embodiment has the following different configuration from the damper device 1 according to the first embodiment, and focuses on the portion related to region I. Therefore, for the sake of convenience, some components common to the damper device 1 according to the first embodiment shown in FIG. 3A and the damper device 1 according to the fifth embodiment shown in FIG. 12 are expressed as if they are slightly different, but it should be understood that the shapes and the like of each component according to both embodiments are basically the same except for the following different configurations.

[0153] The damper device 1 according to the fifth embodiment has a configuration generally similar to that of the damper device 1 according to the above-described embodiment, but differs from the above-described embodiment in the configurations of the thrust member 500, the first sliding part 600, and the second sliding part 700. Note that, in the damper device 1 according to the fifth embodiment, detailed description of the same configuration as that of the damper device 1 according to the above-described embodiment will be omitted.

[0154] The thrust member 500 in the damper device 1 according to the fifth embodiment, like the second embodiment, further includes a fourth elastic member 505 that biases the integrated component in a direction approaching the hub 200 (to the right in FIG. 12) in addition to the aforementioned substantially cylindrical fitting portion 501 and substantially annular main portion 502. The fourth elastic member 505 may be, but is not limited to, a commonly known disc spring.

[0155] Furthermore, in the damper device 1 according to the fifth embodiment, the first sliding portion 600 and the second sliding portion 700 are formed integrally with the control plate 300. That is, the control plate 300, the first sliding portion 600, and the second sliding portion 700 are formed as one integral structure. The integral structure thus formed can be regarded as a control plate 300x having both the functions of the first sliding portion 600 and the second sliding portion 700 (for convenience, the control plate in this fifth embodiment will be referred to as "control plate 300x").

[0156] Therefore, the control plate 300x according to the fifth embodiment can have, on the radially extending portion 302, a first sliding surface 602a that slides directly against the inner surface 110A of the first plate 100A to generate a first sliding torque, and a second sliding surface 702a that slides directly against the hub 200 (disc portion 205) to generate a second sliding torque.

[0157] With the above-described configuration, the damper device 1 according to the fifth embodiment has the second surface 502y of the thrust member 500 pressed against the hub 200 (disk portion 205) by the biasing force of the fourth elastic member 505. This makes it possible to reliably and efficiently generate the above-described third sliding torque when the disc plate 100 and the hub 200 rotate relatively to each other.

[0158] On the other hand, in conjunction with the fourth elastic member 505 biasing the second surface 502y in a direction approaching the hub 200, a reaction force associated with the bias is transmitted from the fourth elastic member 505 to the second plate 100B. As a result, the second plate 100B is slightly biased in a direction away from the hub 200 (to the left in FIG. 12). In conjunction with this, the first plate 100A, which is integrated with the first plate 100B via the rivet 120, is also slightly biased in a direction approaching the control plate 300 (to the left in FIG. 12). As a result, the inner surface 110A of the first plate 100A is pressed against the first sliding surface 602a of the control plate 300x. As a result, when the disc plate 100 and the control plate 300x rotate relative to each other, a first sliding torque can be reliably and efficiently generated between the first sliding surface 602a of the control plate 300x and the inner surface 110A of the first plate 100A.

[0159] In addition, in conjunction with the inner surface 110A of the first plate 100A being pressed against the first sliding surface 602a of the control plate 300x, the second sliding surface 702a of the control plate 300x is pressed against the hub 200 (disk portion 205). As a result, when the control plate 300x and the hub 200 rotate relatively to each other, a second sliding torque can be reliably and efficiently generated between the second sliding surface 702a of the control plate 300x and the hub 200.

[0160] Although not shown in FIG. 12, the control plate 300x has a first top portion 602a that abuts against the first plate 100A on the first sliding surface 602a as described above with reference to FIG. 1 and the first top portion 602a 1 , extends in a direction away from the rotation axis O, and is inclined in a direction away from the first plate 100A. 2 and the first top portion 602a 1 , which extends toward the rotation axis O and is inclined in a direction away from the first plate 100A. 3 and

[0161] As described above with reference to FIG. 3B, the gap G between the inner circumferential surface surrounding the opening (first opening) 602A formed in the control plate 300x and the outer circumferential surface of the hub 200 1 However, a gap G is provided between the inner peripheral surface surrounding the opening (second opening) 500a formed in the thrust member 500 and the outer peripheral surface of the hub 200. 2 It can be made smaller.

[0162] Sixth embodiment Next, the configuration of the damper device 1 according to the sixth embodiment will be described with reference to Figs. 13 and 14. Fig. 13 is a schematic cross-sectional view showing the configuration of the damper device 1 according to the sixth embodiment. Fig. 14 is a schematic view showing an enlarged relationship between the disc plate 100 and the control plate 300 in the damper device 1 according to the sixth embodiment. Fig. 13 is a view for simply explaining that the damper device 1 according to the sixth embodiment has the following different configuration from the damper device 1 according to the first embodiment, and focuses on the area I. Therefore, for the sake of convenience, some components common to the damper device 1 according to the first embodiment according to Fig. 3A and the damper device 1 according to the sixth embodiment according to Fig. 13 are expressed as being slightly different in Fig. 13, but it should be understood that the shapes of the components according to both embodiments are basically the same except for the following different configurations.

[0163] The damper device 1 according to the sixth embodiment has a configuration generally similar to that of the damper device 1 according to the above-described embodiment, but differs from the above-described embodiment in the configurations of the disc plate 100, the hub 200, the control plate 300, the first sliding portion 600, and the second sliding portion 700. Note that, in the damper device 1 according to the sixth embodiment, detailed descriptions of the same configurations as those of the damper device 1 according to the above-described embodiment will be omitted.

[0164] Unlike the first embodiment, the control plate 300 in the damper device 1 according to the sixth embodiment is configured so that each of the axially extending portions 303a to 303d is accommodated in the disc plate 100, rather than in the grooves 208a to 208d of the hub 200. Specifically, the first plate 100A of the damper device 1 according to the sixth embodiment is provided with accommodation grooves 130 (accommodation grooves 130a to 130d) that accommodate the axially extending portions 303a to 303d in correspondence with the respective regions I to IV, as shown in FIG. The accommodation grooves 130a to 130d may be integrally provided on the radially inner side of the first accommodation area 102a, the second accommodation area 102b, the third accommodation area 102c, and the fourth accommodation area 102d provided on the first plate 100A, or may be provided independently on the first plate 100A, in the same manner as the grooves 208a to 208d of the embodiment that are provided continuously with the window holes 206a to 206d of the hub 200. Note that FIG. 14 shows an example in which the accommodation groove 130a is provided independently of the first accommodation area 102a.

[0165] In the sixth embodiment, the axially extending portions 303a to 303d of the control plate 300 are accommodated at positions adjacent to the wall portion 130w that defines the accommodation groove portions 130a to 130d, forming a gap of a predetermined distance, as shown in Fig. 14. This corresponds to the axially extending portions 303a to 303d being accommodated at positions adjacent to the wall portion 208w in the one embodiment.

[0166] Meanwhile, the grooves 208a to 208d of the hub 200 in the damper device 1 according to the sixth embodiment can be omitted because the function of accommodating the axially extending portions 303a to 303d of the control plate 300 is not necessary. Meanwhile, as shown in Fig. 13, an engagement hole 210 with which the second sliding portion 700 engages is separately formed in the hub 200. As a result, the second sliding portion 700 is engaged with the hub 200, and is configured so that the second sliding portion 700 can rotate integrally with the hub 200.

[0167] The first sliding portion 600 in the damper device 1 according to the sixth embodiment has a basically similar configuration to that in the first embodiment, but is disposed at a position close to the rotation axis O.

[0168] The damper device 1 according to the sixth embodiment configured as described above basically operates in the same manner as the first embodiment, except that the relationship between the control plate 300 and the hub 200 according to the first embodiment described with reference to Figures 7A to 7F is replaced by the relationship between the control plate 300 and the disc plate 100 (first plate 100A) in the sixth embodiment.

[0169] Specifically, as in the cases of Figs. 7B and 7C described above, a case is assumed in which relative rotation occurs between the disc plate 100 and the hub 200, and a twist of 0° to θ1° to θ2° occurs in the positive direction. In this case, the hub 200 rotates (moves) in the R direction (clockwise direction in Fig. 7B) relative to the disc plate 100, but from a different perspective, this is synonymous with the disc plate 100 rotating (moving) in the L direction relative to the hub 200. In this case, in the sixth embodiment, the distance of the gap between the axial extension parts 303a to 303d of the control plate 300 and the wall parts 130w of the corresponding accommodation groove parts 130a to 130d gradually increases, and the two do not come into contact with each other. Therefore, the control plate 300 is not affected by the relative rotation of the disc plate 100 to the hub 200 and does not rotate relative to the hub 200. On the other hand, the control plate 300 rotates relative to the disc plate 100 (the disc plate 100 rotates relative to the control plate 300). Therefore, a first sliding torque is generated between the radially extending portion 302 of the control plate 300 and the first sliding surface 602a of the first sliding portion 600.

[0170] Next, as in the case of Fig. 7D described above, a case is assumed in which relative rotation occurs between the disc plate 100 and the hub 200, causing a twist of 0° to θ3° on the negative side. In this case, the hub 200 rotates (moves) in the L direction (counterclockwise in Fig. 7B) relative to the disc plate 100, but from a different perspective, this is synonymous with the disc plate 100 rotating (moving) in the R direction relative to the hub 200. In this case, in the sixth embodiment, the distance of the gap between the axial extensions 303a to 303d of the control plate 300 and the wall portions 130w of the corresponding accommodation grooves 130a to 130d gradually decreases, and finally the two come into contact at a twist angle of θ3°. Therefore, even when the torsion angle is 0° to θ3°, there is a gap between the axially extending portions 303a to 303d and the wall portion 130w, so that the control plate 300 is not affected by the relative rotation of the disc plate 100 with respect to the hub 200 and does not rotate relative to the hub 200. On the other hand, the control plate 300 rotates relative to the disc plate 100 (the disc plate 100 rotates relative to the control plate 300). Therefore, a first sliding torque is generated between the radially extending portion 302 of the control plate 300 and the first sliding surface 602a of the first sliding portion 600.

[0171] Next, as in the case of FIG. 7E described above, a case is assumed in which a relative rotation occurs between the disc plate 100 and the hub 200, and a twist of θ3° to θ4° occurs on the negative side. In this case, the hub 200 rotates (moves) in the L direction (counterclockwise in FIG. 7B) relative to the disc plate 100, but from a different perspective, this is synonymous with the disc plate 100 rotating (moving) in the R direction relative to the hub 200. In this case, in the sixth embodiment, the axial extensions 303a to 303d of the control plate 300 come into contact with the wall portions 130w of the corresponding accommodation grooves 130a to 130d. Therefore, the control plate 300 rotates integrally with the disc plate 100. This causes the control plate 300 to rotate relative to the hub 200 , and a second sliding torque is generated between the radially extending portions 302 a to 302 d of the control plate 300 and the second sliding surface 702 b of the second sliding portion 700 .

[0172] In the sixth embodiment, unlike the first embodiment, the second sliding torque is set to be larger than the first sliding torque.

[0173] In the sixth embodiment, similarly to the first embodiment, a third sliding torque is generated in the thrust member 500. As a result, in the sixth embodiment, the combined torque of the third sliding torque and the first sliding torque is used as the "small hysteresis torque", and the combined torque of the third sliding torque and the second sliding torque is used as the "large hysteresis torque".

[0174] 13, the plate portion 602 has a first top portion 602a that abuts against the radially extending portion 302 of the control plate 300 on the first sliding surface 602a, as described above with reference to FIG. 1 and the first top portion 602a 1 The first inclined surface 602a connected to 2 and the first top portion 602a 1 The second inclined surface 602a connected to 3 and

[0175] As described above with reference to FIG. 3B, the gap G between the inner circumferential surface surrounding the opening (first opening) 602A formed in the plate portion 602 and the outer circumferential surface of the hub 200 1 However, a gap G is provided between the inner peripheral surface surrounding the opening (second opening) 500a formed in the thrust member 500 and the outer peripheral surface of the hub 200. 2 It can be made smaller.

[0176] Seventh embodiment Next, the configuration of the damper device 1 according to the seventh embodiment will be described with reference to FIG. 15. FIG. 15 is a schematic cross-sectional view showing the configuration of the damper device 1 according to the seventh embodiment. FIG. 15 is a diagram for simply explaining that the damper device 1 according to the seventh embodiment has the following different configuration from the damper device 1 according to the first embodiment, and focuses on the portion related to region I. Therefore, for the sake of convenience, some components common to the damper device 1 according to the first embodiment shown in FIG. 3A and the damper device 1 according to the seventh embodiment shown in FIG. 15 are expressed as if they are slightly different, but it should be understood that the shapes and the like of each component according to both embodiments are basically the same except for the following different configurations.

[0177] The damper device 1 according to the seventh embodiment has a configuration generally similar to that of the damper device 1 according to the above-described embodiment, but the configurations of the disc plate 100, the hub 200, the control plate 300, the thrust member 500, the first sliding portion 600, and the second sliding portion 700 are different from those of the above-described embodiment. On the other hand, the damper device 1 according to the seventh embodiment has a configuration generally similar to that of the damper device 1 according to the above-described sixth embodiment. Therefore, in the damper device 1 according to the seventh embodiment, the following description will be focused on the parts that are basically different from the damper device 1 according to the sixth embodiment, and detailed descriptions of the other parts will be omitted.

[0178] As in the second embodiment, the thrust member 500 in the damper device 1 according to the seventh embodiment is provided with a fourth elastic member 505. As a result, the second surface 502y of the thrust member 500 is pressed against the hub 200 (disk portion 205) by the biasing force of the fourth elastic member 505, so that when the disc plate 100 and the hub 200 rotate relatively to each other, the third sliding torque described above can be generated reliably and efficiently.

[0179] As described in the second embodiment, the reaction force of the fourth elastic member 505 15. The second elastic member 602a is then transmitted to the second plate 100B, and the first plate 100A is biased in a direction approaching the control plate 300 (to the left in FIG. 15). As a result, the first plate 100A is pressed against the first sliding portion 600, and the control plate 300 is pressed against the first sliding portion 600. That is, the first sliding portion 600 in the seventh embodiment does not have the second elastic member 604. As a result, a first sliding torque can be generated between the first plate 100A and the first sliding portion 600 (first sliding surface 602a), and between the first sliding portion 600 (first sliding surface 602a) and the radially extending portion 302 of the control plate 300, when the control plate 300 and the disc plate 100 rotate relatively.

[0180] On the other hand, the second sliding portion 700 in the damper device 1 according to the seventh embodiment is configured to be engaged with the control plate 300 and rotate integrally with the control plate 300, unlike the sixth embodiment. Specifically, in the seventh embodiment, the second sliding portion 700 is configured to be engaged (fitted) with an engagement hole 305 provided on the radially extending portion 302 of the control plate 300. With this configuration, as in the sixth embodiment, when the control plate 300 and the hub 200 rotate relative to each other, a second sliding torque can be generated between the hub 200 (disc portion 205) and the second sliding surface 702a of the second sliding portion 700.

[0181] In the seventh embodiment, similarly to the sixth embodiment, the second sliding torque is set to be larger than the first sliding torque. In the seventh embodiment, the combined torque of the third sliding torque and the first sliding torque is used as the "small hysteresis torque", and the combined torque of the third sliding torque and the second sliding torque is used as the "large hysteresis torque".

[0182] 15, the plate portion 602 has a first top portion 602a that abuts against the radially extending portion 302 of the control plate 300 on the first sliding surface 602a, as described above with reference to FIG. 1 and the first top portion 602a 1 The first inclined surface 602a connected to 2 and the first top portion 602a 1 The second inclined surface 602a connected to 3 and

[0183] As described above with reference to FIG. 3B, the gap G between the inner circumferential surface surrounding the opening (first opening) 602A formed in the plate portion 602 and the outer circumferential surface of the hub 200 1 However, a gap G is provided between the inner peripheral surface surrounding the opening (second opening) 500a formed in the thrust member 500 and the outer peripheral surface of the hub 200. 2 It can be made smaller.

[0184] Eighth embodiment Next, the configuration of the damper device 1 according to the eighth embodiment will be described with reference to FIG. 16. FIG. 16 is a schematic cross-sectional view showing the configuration of the damper device 1 according to the eighth embodiment. FIG. 16 is a diagram for simply explaining that the damper device 1 according to the eighth embodiment has the following different configuration from the damper device 1 according to the first embodiment, and focuses on the portion related to region I. Therefore, for the sake of convenience, some components common to the damper device 1 according to the first embodiment shown in FIG. 3A and the damper device 1 according to the eighth embodiment shown in FIG. 16 are expressed as if they are slightly different, but it should be understood that the shapes and the like of each component according to both embodiments are basically the same except for the following different configurations.

[0185] The damper device 1 according to the eighth embodiment has a configuration generally similar to that of the damper device 1 according to the above-described embodiment, but the configurations of the disc plate 100, the hub 200, the control plate 300, the first sliding portion 600, and the second sliding portion 700 are different from those of the above-described embodiment. On the other hand, the damper device 1 according to the eighth embodiment has a configuration generally similar to that of the damper device 1 according to the above-described sixth embodiment. Therefore, the damper device 1 according to the eighth embodiment will be described mainly with respect to the parts that are basically different from the damper device 1 according to the sixth embodiment, and detailed descriptions of the other parts will be omitted.

[0186] As in the third embodiment, the second sliding portion 700 in the damper device 1 according to the eighth embodiment is provided with a third elastic member 705 that biases the second sliding surface 702a in a direction (leftward in the drawing in FIG. 16) to press the second sliding surface 702a against the hub 200 (disk portion 205). At this time, the second sliding portion 700 can be engaged with the control plate 300. This makes it possible to reliably and efficiently generate a second sliding torque between the hub 200 and the second sliding surface 702a when the control plate 300 and the hub 200 rotate relatively to each other.

[0187] On the other hand, the reaction force of the biasing force of the third elastic member 705 is transmitted to the control plate 300, so that the radially extending portion 302 of the control plate 300 is pressed (biased) against the first sliding portion 600. Furthermore, in conjunction with this, the first sliding portion 600 is pressed against the first plate 100A. As a result, a first sliding torque can be generated between the radially extending portion 302 of the control plate 300 and the first sliding portion 600 (first sliding surface 602a), and between the first sliding portion ((first sliding surface 602a)) and the inner surface 110A of the first plate 100A, when the control plate 300 and the disc plate 100 rotate relatively to each other.

[0188] Furthermore, based on the above-mentioned reaction force, the first plate 100A is urged in a direction away from the control plate 300 (to the right in FIG. 16), whereby the second plate 100B integrated with the first plate 100A via the rivet 120 is urged in a direction approaching the hub 200 (to the right in FIG. 16). This makes it possible to reliably and efficiently generate the above-mentioned third sliding torque on the first surface 502x and the second surface 502y of the thrust member 500.

[0189] In the eighth embodiment, similarly to the sixth embodiment, the second sliding torque is greater than the first sliding torque. In the eighth embodiment, the "small hysteresis" is set to be large. The torque that is the sum of the third sliding torque and the first sliding torque is used as the "torque" and the "large hysteresis torque" is used as the "torque". The sum of the third sliding torque and the second sliding torque is used as the "tension torque."

[0190] Although not shown in FIG. 16, the plate portion 602 has a first top portion 602a that abuts against the radially extending portion 302 of the control plate 300 on the first sliding surface 602a, as described above with reference to FIG. 1 and the first top portion 602a 1 The first inclined surface 602a connected to 2 and the first top portion 602a 1The second inclined surface 602a connected to 3 and

[0191] As described above with reference to FIG. 3B, the gap G between the inner circumferential surface surrounding the opening (first opening) 602A formed in the plate portion 602 and the outer circumferential surface of the hub 200 1 However, a gap G is provided between the inner peripheral surface surrounding the opening (second opening) 500a formed in the thrust member 500 and the outer peripheral surface of the hub 200. 2 It can be made smaller.

[0192] Ninth embodiment Next, the configuration of the damper device 1 according to the ninth embodiment will be described with reference to FIG. 17. FIG. 17 is a schematic cross-sectional view showing the configuration of the damper device 1 according to the ninth embodiment. FIG. 17 is a diagram for simply explaining that the damper device 1 according to the ninth embodiment has the following different configuration from the damper device 1 according to the first embodiment, and focuses on the portion related to region I. Therefore, for the sake of convenience, some components common to the damper device 1 according to the first embodiment shown in FIG. 3A and the damper device 1 according to the ninth embodiment shown in FIG. 17 are expressed as if they are slightly different, but it should be understood that the shapes and the like of each component according to both embodiments are basically the same except for the following different configurations.

[0193] The damper device 1 according to the ninth embodiment has a configuration generally similar to that of the damper device 1 according to the above-described embodiment, but the configurations of the disc plate 100, the hub 200, the control plate 300, the first sliding portion 600, and the second sliding portion 700 are different from those of the above-described embodiment. On the other hand, the damper device 1 according to the ninth embodiment has a configuration generally similar to that of the damper device 1 according to the seventh embodiment. Therefore, in the damper device 1 according to the ninth embodiment, the following description will be focused on the parts that are basically different from the damper device 1 according to the seventh embodiment, and detailed descriptions of the other parts will be omitted.

[0194] The first sliding part 600 in the damper device 1 according to the ninth embodiment has a second elastic member 604 that biases the first sliding surface 602a in a direction approaching the first plate 100A (to the right in FIG. 17). The first sliding part 600 of the ninth embodiment can be engaged with the control plate 300 and rotated integrally with the control plate 300. This makes it possible to reliably and efficiently generate a first sliding torque when the control plate 300 and the disc plate 100 rotate relative to each other.

[0195] Moreover, the first plate 100A is urged in a direction away from the control plate 300 (to the right in FIG. 17) by the urging force of the second elastic member 604 described above. Here, the urging force is also transmitted to the second plate 100B that is integrated with the first plate 100A via the rivet 120, so that the second plate 100B is urged in a direction approaching the hub 200 (to the right in FIG. 17). This makes it possible to reliably and efficiently generate the third sliding torque described above on the first surface 502x and the second surface 502y of the thrust member 500.

[0196] In the ninth embodiment, similarly to the sixth embodiment, the second sliding torque is set to be larger than the first sliding torque. In the ninth embodiment, the combined torque of the third sliding torque and the first sliding torque is used as the "small hysteresis torque", and the combined torque of the third sliding torque and the second sliding torque is used as the "large hysteresis torque".

[0197] Although not shown in FIG. 17, the plate portion 602 has a first top portion 602a that abuts against the first plate 100A on the first sliding surface 602a as described above with reference to FIG. 1 and the first top portion 602a 1 , extends in a direction away from the rotation axis O, and is inclined in a direction away from the first plate 100A. 2 and the first top portion 602a 1, which extends toward the rotation axis O and is inclined in a direction away from the first plate 100A. 3 and

[0198] As described above with reference to FIG. 3B, the gap G between the inner circumferential surface surrounding the opening (first opening) 602A formed in the plate portion 602 and the outer circumferential surface of the hub 200 1 However, a gap G is provided between the inner peripheral surface surrounding the opening (second opening) 500a formed in the thrust member 500 and the outer peripheral surface of the hub 200. 2 It can be made smaller.

[0199] Tenth embodiment Next, the configuration of the damper device 1 according to the tenth embodiment will be described with reference to FIG. 18. FIG. 18 is a schematic cross-sectional view showing the configuration of the damper device 1 according to the tenth embodiment. FIG. 18 is a diagram for simply explaining that the damper device 1 according to the tenth embodiment has the following different configuration from the damper device 1 according to the first embodiment, and focuses on the portion related to region I. Therefore, for the sake of convenience, some components common to the damper device 1 according to the first embodiment shown in FIG. 3A and the damper device 1 according to the tenth embodiment shown in FIG. 18 are expressed as being slightly different, but it should be understood that the shapes and the like of each component according to both embodiments are basically the same except for the following different configurations.

[0200] The damper device 1 according to the tenth embodiment has almost the same configuration as the seventh embodiment described above, but similar to the fifth embodiment, the first sliding part 600 and the second sliding part 700 are integrally formed with the control plate 300. That is, the control plate 300, the first sliding part 600, and the second sliding part 700 are formed as one integral structure. The integral structure thus formed can be regarded as a control plate 300y (for convenience, the control plate in the tenth embodiment will be referred to as "control plate 300y") that combines the functions of the first sliding part 600 and the second sliding part 700 according to the seventh embodiment.

[0201] Therefore, the control plate 300y according to the tenth embodiment can have a first sliding surface 602a that slides directly against the inner surface 110A of the first plate 100A to generate a first sliding torque, and a second sliding surface 702a that slides directly against the hub 200 (disk portion 205) to generate a second sliding torque, on the radially extending portion 302. This allows the damper device 1 according to the tenth embodiment to operate in the same way as the damper device 1 according to the seventh embodiment.

[0202] In the tenth embodiment, similarly to the seventh embodiment, the second sliding torque is set to be larger than the first sliding torque. In the tenth embodiment, the combined torque of the third sliding torque and the first sliding torque is used as the "small hysteresis torque", and the combined torque of the third sliding torque and the second sliding torque is used as the "large hysteresis torque".

[0203] Although not shown in FIG. 18, the control plate 300y has a first top portion 602a that abuts against the first plate 100A on the first sliding surface 602a as described above with reference to FIG. 1 and the first top portion 602a 1 , extends in a direction away from the rotation axis O, and is inclined in a direction away from the first plate 100A. 2 and the first top portion 602a 1, which extends toward the rotation axis O and is inclined in a direction away from the first plate 100A. 3 and

[0204] As described above with reference to FIG. 3B, the gap G between the inner circumferential surface surrounding the opening (first opening) 602A formed in the control plate 300x and the outer circumferential surface of the hub 200 1 However, a gap G is provided between the inner peripheral surface surrounding the opening (second opening) 500a formed in the thrust member 500 and the outer peripheral surface of the hub 200. 2 It can be made smaller.

[0205] 3-10.Other In the various embodiments described above, the first sliding portion 600 or the like has a first top portion 602a that abuts against the radially extending portion 302 of the control plate 300 (or the first plate 100A or the like) on the first sliding surface 602a. 1 and the first top portion 602a 1 The first inclined surface 602a connected to 2 and the first top portion 602a 1 The second inclined surface 602a connected to 3 In addition to or in place of this, the thrust member 500 and / or the second sliding portion 700 may have a similar configuration.

[0206] A specific example will be described with reference to Fig. 19 and Fig. 20. Fig. 19 is a schematic cross-sectional view showing a configuration of a damper device according to one embodiment. Fig. 20 is a schematic cross-sectional view showing an enlarged configuration of a portion of the damper device shown in Fig. 19.

[0207] A component obtained by modifying a portion of the configuration of thrust member 500 described with reference to Figure 3A etc. is shown in Figures 19 and 20 as thrust member 500', and a component obtained by modifying a portion of the configuration of second sliding member 700 described with reference to Figure 3A etc. is shown in Figures 19 and 20 as second sliding member 700'. An input shaft S of a transmission (not shown) rotatably supported by bearing B is inserted into hub 200 (through hole 203 [see Figure 3A] formed in cylindrical portion 202).

[0208] As described above, when there is a misalignment between the rotation center of the drive shaft Z (and thus the disc plate 100) and the rotation center of the input shaft S of the transmission, the rotation axis of the hub 200 through which the input shaft S is inserted is inclined relative to the drive shaft Z (and thus the disc plate 100). As a result, the thrust member 500 and the second sliding part 700 supported by the hub 200 are inclined relative to the drive shaft Z, and further, relative to the flywheel 2 and the disc plate 100 connected to the flywheel 2. In this case, there is a possibility that the second surface 502y of the thrust member 500 and the second sliding surface 702a of the second sliding part 700 do not slide relative to the hub 200 as originally intended.

[0209] As shown in FIG. 20, the thrust member 500′ has a second apex 502y that abuts on the second surface 500y against the hub 200 (the surface 200a of the hub 200 that faces the thrust member 500′). 1 and the second apex 502y 1 The third inclined surface 502y connected to 2 and the second apex 502y 1 The fourth inclined surface 502y connected to 3 The third inclined surface 502y may have a 2 The second apex 502y 1 The fourth inclined surface 502y extends in a direction away from the rotation axis of the thrust member 500 (i.e., the rotation axis O) (upward in FIG. 20) and can be inclined in a direction away from the surface 200a of the hub 200 (leftward in FIG. 20). 3The second apex 502y 1 20) toward the rotation axis (i.e., the rotation axis O) of the thrust member 500 and inclines in a direction away from the surface 200a of the hub 200 (to the left in FIG. 20). 1 The contact members 14 and 15 can slide in contact with each other at the positions 14 and 15.

[0210] As a result, even if the hub 200 is tilted with respect to the drive axis Z, the thrust member 500′ still has the second apex 502y in contact with the surface 200a of the hub 200. 1 Since they abut and slide at this position, there is no large change in the area of ​​the abutting portion between the thrust member 500' and the hub 200. As a result, changes in the magnitude of the third sliding torque are suppressed.

[0211] As shown in FIG. 20, the second sliding portion 700′ has a third apex 702a that abuts on the hub 200 (the surface 200b of the hub 200 that faces the second sliding portion 700′). 1 and the third top portion 702a 1 The fifth inclined surface 702a connected to 2 and the third top portion 702a 1 The sixth inclined surface 702a connected to 3 The fifth inclined surface 702a may have a 2 The third apex 702a 1 The sixth inclined surface 702a extends in a direction away from the rotation axis of the second sliding part 700′ (i.e., the rotation axis O) (upward in FIG. 20) and can be inclined in a direction away from the surface 200b of the hub 200 (rightward in FIG. 20). 3 The third apex 702a 1 20) toward the rotation axis (i.e., the rotation axis O) of the second sliding part 700' and inclines in a direction away from the surface 200b of the hub 200 (to the right in FIG. 20).1 The contact members 14 and 15 can slide in contact with each other at the positions 14 and 15.

[0212] As a result, even if the hub 200 is tilted with respect to the drive axis Z, the second sliding portion 700′ still has the third apex 702a in contact with the surface 200b of the hub 200. 1 Since they come into contact and slide at this position, there is no large change in the area of ​​the contact portion between the second sliding part 700' and the hub 200. As a result, changes in the magnitude of the second sliding torque are suppressed.

[0213] In addition, in all the above-mentioned embodiments, an example in which the control plate 300 is accommodated in the first accommodation space 100x has been described in detail, but as described above, the control plate 300 may be accommodated in the second accommodation space 100y. In this case, in all the embodiments, the components arranged in the first accommodation space 100x and the components arranged in the second accommodation space 100y may be mutually interchanged.

[0214] A specific example will be briefly described with reference to FIG. 21. FIG. 21 is a schematic cross-sectional view showing the configuration of a damper device according to one embodiment. When FIG. 21 is compared with FIG. 3A, the first sliding part 600R shown in FIG. 21 can have a cross-sectional shape obtained by inverting (mirroring) the first sliding part 600 so as to have a symmetrical relationship with the first sliding part 600 shown in FIG. 3A. Similarly, the thrust member 500R and the second sliding part 700R shown in FIG. 21 can have a cross-sectional shape obtained by inverting (mirroring) the thrust member 500 and the second sliding part 700 shown in FIG. 3A, respectively, so as to have a symmetrical relationship with the thrust member 500 and the second sliding part 700 shown in FIG. 3A. The same applies to the control plate 300 shown in FIG. 3A.

[0215] Furthermore, when such a configuration is adopted, the gap provided between the inner peripheral surface surrounding the opening (second opening) 500a formed in the thrust member 500R (located closer to the bearing S or the transmission) and the outer peripheral surface of the hub 200R can be formed to be smaller than the gap provided between the inner peripheral surface surrounding the opening (first opening 602A) formed in the first sliding part 600R (located farther from the bearing S or the transmission) and the outer peripheral surface of the hub 200R. This makes it possible to keep the angle at which the hub 200R is inclined with respect to the drive shaft Z, and therefore the angle at which the thrust member 500R supported by the hub 200R is inclined, small.

[0216] Furthermore, in the various embodiments described above, with reference to Figures 7A to 7F, it has been explained that the damper device 1 has torsional characteristics as shown in Figure 8 by adopting a configuration in which the radial extending portion 302 of the control plate 300 engages with the elastic mechanism portion 400 or the sheet 410, and the axial extending portion 303 of the control plate 300 engages with the wall portion 208 of the hub 200.

[0217] In this regard, it is also possible to adopt a configuration in which the arrangement of the radially extending portion 302 and the axially extending portion 303 of the control plate 300 and the wall portion 208w of the hub 200 shown in FIG. 7A and the like is reversed so as to be symmetrical. For example, as shown in FIG. 22, the control panel 300' can have a shape in which the control panel 300 shown in FIG. 7A is reversed (mirrored) so as to be symmetrical with respect to the control panel 300 shown in FIG. 7A. Similarly, the positions of the four wall portions 208w of the hub 200 shown in FIG. 7A can be reversed (mirrored) to arrange the four wall portions 208w' in the hub 200 as shown in FIG. 22. By adopting such a configuration, the damper device 1 can have a torsional characteristic as shown in FIG. 23.

[0218] The torsional characteristic shown in FIG. 23 will be compared with the torsional characteristic shown in FIG. 8. In the damper device 1 shown in FIG. 7A etc., as described above with reference to FIG. 7E, when the hub 200 rotates relatively to the negative side with respect to the disc plate 100, that is, in the L direction (counterclockwise direction in FIG. 7A etc.), the axial extension part 303 of the control plate 300 and the wall part 208w of the hub 200 come into contact with each other, so that the hub 200 and the control plate 300 rotate together. As a result, a first sliding torque (larger than the second sliding torque) is generated between the first sliding surface 602a of the first sliding part 600 and the radial extension part 302 of the control plate 300. As a result, a "large hysteresis torque" that is the sum of the first sliding torque and the third sliding torque is generated from the state of FIG. 7D to the state of FIG. 7E. Therefore, as shown in FIG. 8, when the hub 200 rotates relative to the disc plate 100 in the negative direction, the damper device 1 can generate a "large hysteresis torque."

[0219] In contrast, in the damper device 1 shown in FIG. 22, when the hub 200 rotates relatively to the disc plate 100 in the positive direction, that is, in the R direction (clockwise direction in FIG. 22), the axial extension portion 303' (e.g., the axial extension portion 303a') of the control plate 300' comes into contact with the wall portion 208w' of the hub 200, and the hub 200 and the control plate 300' rotate together. As a result, a first sliding torque (larger than the second sliding torque) is generated between the first sliding surface 602a of the first sliding portion 600 and the radial extension portion 302 (e.g., the radial extension portion 302a') of the control plate 300'. As a result, a "large hysteresis torque" is generated, which is the sum of the first sliding torque and the third sliding torque. Therefore, as shown in FIG. 23, when the hub 200 rotates relatively to the disc plate 100 in the positive direction, the damper device 1 can generate a "large hysteresis torque."

[0220] In this way, the damper device 1 shown in Figure 22 can have the torsional characteristics shown in Figure 23, in which the positive and negative signs are reversed compared to the torsional characteristics of the damper device 1 shown in Figure 7A, etc., i.e., the direction in which the hub 200 rotates relative to the disc plate 100 is reversed.

[0221] As would be easily understood by a person skilled in the art having the benefit of this disclosure, the various examples described above may be appropriately combined with each other in various patterns, unless a contradiction occurs.

[0222] As described above, various embodiments have been exemplified, but the above embodiments are merely examples and are not intended to limit the scope of the invention. The above embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the gist of the invention. In addition, each configuration, shape, size, length, width, thickness, height, number, etc. can be appropriately changed and implemented. In addition, the various embodiments described above can also be applied to damper devices for applications that do not require the above-mentioned limiter function, such as clutch discs. [Explanation of symbols]

[0223] 1 Damper device 100 First rotating body (disc plate) 100A 1st plate 100B Second Plate 100x First Storage Space 100y Second Storage Space 200 Second rotating body (hub) 202 Cylindrical part 205 Disc 206a to 206d Window holes 208a to 208d Groove 208w wall 300 Control Plate 302a to 302d radial extension part 303a to 303d Axial extension part 400 Elastic mechanism 410 First elastic member 420 Pair of sheet members 420A, 420B Sheet material 500 Thrust member 500a Second opening 502x 1st face 502y Second Side 502y 1 2nd top 502y 2 Third slope 502y 3 4th slope 505 Fourth elastic member 600 First sliding part 602a 1st sliding surface 602a 1 1st top 602a 2 1st slope 602a 3 2nd slope 602A 1st opening 602B 1st engagement part 602C 2nd engaging part 604 Second elastic member 700 Second sliding part 702a 2nd sliding surface 702a 1 3rd top 702a 2 Fifth slope 702a 3 and the 6th inclined surface 705 Third elastic member O Rotation axis

Claims

1. a first rotor including at least a first plate that rotates around a rotation axis, and a second plate that is disposed opposite the first plate and rotates integrally with the first plate around the rotation axis; A second rotating body that rotates relative to the first rotating body about the rotation axis; an elastic mechanism that elastically couples the first rotating body and the second rotating body in a rotational direction; a control plate having a radially extending portion that extends in a radial direction and abuts against the elastic mechanism portion, and an axially extending portion that extends in an axial direction and is at least partially accommodated in either one of the first rotating body or the second rotating body, and is disposed in only one of a first accommodation space between the first plate and the second rotating body and a second accommodation space between the second plate and the second rotating body in the axial direction; a first sliding portion that is disposed between the first rotor and the control plate, slides against at least one of the first rotor and the control plate to generate a first sliding torque, has a first opening, and is rotatably supported by an outer circumferential surface of the second rotor at an inner circumferential surface surrounding the first opening; a second sliding portion disposed between the second rotating body and the control plate and sliding on at least one of the second rotating body and the control plate to generate a second sliding torque; Equipped with A damper device that generates the first sliding torque and the second sliding torque when the first rotating body and the second rotating body rotate relative to each other.

2. 2. The damper device according to claim 1, wherein one of the first sliding torque and the second sliding torque is greater than the other, and is generated when the second rotating body rotates relative to the first rotating body in a counterclockwise direction.

3. the elastic mechanism includes a first elastic member and a pair of sheet members that sandwich and support the first elastic member from both sides, The damper device according to claim 1 , wherein the radially extending portion abuts against either the first elastic member or one of the pair of sheet members.

4. 4. The damper device according to claim 1, wherein the first sliding portion includes a first sliding surface that slides against the first rotating body or the radially extending portion, and a second elastic member that biases the first sliding surface in a direction approaching the first rotating body or the radially extending portion.

5. 4. The damper device according to claim 1, wherein the second sliding portion includes a second sliding surface that slides against the second rotating body or the radially extending portion, and a third elastic member that biases the second sliding surface in a direction approaching the second rotating body or the radially extending portion.

6. the first sliding portion and the second sliding portion are integrally formed with the control plate and function as a part of the control plate; The damper device according to claim 1 , wherein the radially extending portion is in direct sliding contact with the first rotating body and is in direct sliding contact with the second rotating body.

7. The damper device according to any one of claims 1 to 6, further comprising a thrust member having at least one of a first surface that slides against the first rotating body and a second surface that slides against the second rotating body, in a space of the first accommodating space and the second accommodating space that is different from the space in which the control plate is arranged.

8. The damper device according to claim 7 , wherein the thrust member has a fourth elastic member that biases the second surface in a direction approaching the second rotating body.

9. the thrust member has a second opening, and is rotatably supported by an outer circumferential surface of the second rotor at an inner circumferential surface surrounding the second opening, 9. The damper device according to claim 7 or 8, wherein a gap provided between an inner circumferential surface surrounding one of the first opening and the second opening, which is located on the transmission side, and an outer circumferential surface of the second rotating body is smaller than a gap provided between an inner circumferential surface surrounding the other of the first opening and the second opening, and the outer circumferential surface of the second rotating body.

10. a thrust member having at least one of a first surface that slides against the first rotor and a second surface that slides against the second rotor, the thrust member being provided in a space of the first accommodating space and the second accommodating space that is different from the space in which the control plate is disposed, The damper device according to claim 1 , wherein one of the first sliding portion and the thrust member, which is located on a transmission side, is formed as a bush.

11. When the first sliding portion is in a position facing the control plate, a first top portion that abuts against the control plate; a first inclined surface connected to the first apex, extending in a direction away from the rotation axis of the first sliding part, and inclined in a direction away from the control plate; a second inclined surface connected to the first apex, extending toward the rotation shaft and inclined away from the control plate; A damper arrangement according to any one of claims 1 to 10, comprising:

12. At a position where the thrust member faces the second rotor, A second apex portion abutting against the second rotating body; a third inclined surface connected to the second apex, extending in a direction away from the rotation axis of the thrust member and inclined in a direction away from the second rotor; a fourth inclined surface connected to the second apex, extending toward the rotation axis of the thrust member and inclined away from the second rotor; A damper arrangement according to any one of claims 7 to 10, comprising:

13. At a position where the second sliding portion faces the second rotating body, A third apex portion abutting against the second rotating body; a fifth inclined surface connected to the third apex, extending in a direction away from the rotation axis of the second sliding part, and inclined in a direction away from the second rotating body; a sixth inclined surface connected to the third apex, extending toward the rotation axis of the second sliding part and inclined toward the second rotating body; A damper arrangement according to any preceding claim, comprising:

Images