Damper device

Abstract

[Problem] To provide a damper device that suppresses wear due to mutual sliding between a support and a member supporting the support. [Solution] A damper device (10) is provided with: a first rotating body (100) that includes a housing region (102A) and rotates about a rotation axis (O); an intermediate member (300) that includes a common support portion (304A) and rotates about a rotation axis with respect to the first rotating body; a first support (430) supported by the common support part; a second support (432) supported by the first end surface (104A1); the first elastic body (410) is clamped between the first support and the second support; a third support (434) supported by the common support portion, the common support portion being disposed so as to be sandwiched between the first support and the third support; a fourth support (436) consisting of a second end face (104A2); the second elastic body (420) is clamped between the third support and the fourth support; and a second rotating body (200) that includes a first support part (206A1) that supports the second support and a second support part (206C2) that supports the fourth support, and that is provided so as to be rotatable about a rotational axis with respect to the first rotating body and the intermediate member. The at least one holder rotates about a fulcrum (436b) that comes into contact with the mating member, and causes a second contact surface (434a1), which is spaced apart from the fulcrum by a second radius (R2) that is larger than the first radius and has a cross-section extending in an arcuate shape, to slide with respect to a first contact surface (304a1) of the mating member, which is spaced apart from the fulcrum by a first radius (R1) and has a cross-section extending in an arcuate shape.

Description

Technical Field

[0001] The technology disclosed in the present application relates to a vibration damping device that absorbs fluctuations in torque transmitted between a first rotating body and a second rotating body. Background Art

[0002] Conventionally, there is known a vibration damping device that absorbs fluctuations in torque transmitted between a first rotating body (disc plate) and a second rotating body (hub).

[0003] In the vibration damping device disclosed in Patent Document 1, a seat that rotates due to centrifugal force abuts against a convex portion of a hub, thereby suppressing further rotation. The entire contents of Patent Document 1 are incorporated herein by reference.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2019-157964 Summary of the invention

[0007] Problems to be solved by the invention

[0008] However, in the vibration damping device disclosed in Patent Document 1, if the area where the carrier rotates due to the centrifugal force and the hub come into contact and slide is not sufficiently ensured, the carrier and the hub may be worn due to such sliding.

[0009] Therefore, each embodiment disclosed in the present application provides a vibration damping device that at least partially suppresses a seat and a member supporting the seat from sliding against each other and causing wear.

[0010] Technical means of solving problems

[0011] A vibration reduction device of one embodiment can adopt the following structure: "having: a first rotating body, including a storage area extending in a circumferential direction, rotating around a rotation axis; an intermediate member, including a common support portion accommodated in the storage area, and rotatably arranged relative to the first rotating body around the rotation axis; a first support, accommodated in the storage area, supported by the common support portion; a second support, accommodated in the storage area, supported by a first end surface surrounding one end of the storage area; a first elastic body, sandwiched between the first support and the second support; a third support, accommodated in the storage area, supported by the common support portion, and the common support portion is arranged in a manner sandwiched between the first support and the third support; a fourth support, accommodated in the storage area, supported by a second support portion surrounding the other end of the storage area The cam is an elastic member which is configured to extend between the first and second support members and to provide a plurality of camshafts which are configured to extend between the first and second support members. The camshafts are configured to extend between the first and second support members and to provide a plurality of camshafts which are configured to extend between the first and second support members.

[0012] Various embodiments disclosed in the present application can provide a vibration damping device that at least partially suppresses wear of a support and a member supporting the support by sliding against each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram showing the outline of a vibration reduction device according to one embodiment.

[0014] Figure 2 Yes means Figure 1 A top view of the structure of the vibration damping device is shown.

[0015] Figure 3 It is a decomposition representation Figure 1 A perspective view of the structure of the vibration damping device shown.

[0016] Figure 4 It is a schematically enlarged representation Figure 2 FIG. 4 is a diagram showing a portion of the structure of the vibration damping device 10 including the third support 434 .

[0017] Figure 5A It is a schematically enlarged representation Figure 2FIG. 2 is a diagram showing another example of a portion of the structure including the third support 434 in the vibration damping device 10 .

[0018] Figure 5B It is a schematically enlarged representation Figure 2 FIG. 4 is a diagram showing another example of a portion of the structure including the third support 434 in the vibration damping device 10 .

[0019] Figure 6 It is a schematically enlarged representation Figure 2 FIG. 4 is a diagram showing another example of a portion of the structure including the third support 434 in the vibration damping device 10 . DETAILED DESCRIPTION

[0020] Hereinafter, various embodiments will be described with reference to the accompanying drawings. It should be noted that the same reference numerals are used for the common structural elements in the accompanying drawings. In addition, it should be noted that for the sake of convenience, the structural components appearing in a certain drawing are omitted in another drawing. In addition, it should be noted that the attached drawings may not necessarily be drawn in exact proportions.

[0021] 1. Structure of vibration reduction device

[0022] Reference Figure 1 to Figure 3 An outline of the structure of a vibration damping device according to one embodiment will be described. Figure 1 It is a perspective view schematically showing an example of the structure of a vibration damping device according to an embodiment. Figure 2 Yes means Figure 1 A top view of the structure of the vibration damping device is shown. Figure 3 It is a decomposition representation Figure 1 A perspective view of the structure of the vibration damping device shown.

[0023] The vibration damping device 10 of one embodiment can transmit the driving force from a driving source such as an engine or a motor to a transmission by being sandwiched between a flywheel (not shown) and a pressure plate (not shown). The structure for sandwiching the vibration damping device 10 between the flywheel and the pressure plate is well known, so a detailed description is omitted.

[0024] The vibration damping device 10 can absorb and attenuate vibration in the torsional direction. Figure 1 to Figure 3 As shown, the vibration damping device 10 may include a disk plate 100 as a first rotating body, a hub 200 as a second rotating body, an intermediate member 300 , and an elastic mechanism portion 400 including a first elastic body 410 and a second elastic body 420 .

[0025] 1-1. Wheel hub 200

[0026] A hub 200 can be arranged on the output side of the power transmission path.

[0027] The hub 200 is formed of, for example, a metal material, has a substantially annular extending shape as a whole, and is rotatably provided around a rotation axis O. Figure 3 As best shown, the hub 200 allows an input shaft (not shown) of a transmission (not shown) to be inserted into a through hole 204 formed in a substantially annular cylindrical portion 202 and is spline-coupled to the input shaft.

[0028] In addition, the hub 200 may include a plurality of flanges 206 extending radially from the cylindrical portion 202. As an example, as described later, the disc plate 100 includes three receiving areas 102 (102A, 102B, 102C), and accordingly, the hub 200 may include a total of three flanges 206 (206A, 206B, 206C), so that a total of two flanges 206 are located at both ends of each receiving area.

[0029] When focusing on the accommodation area 102A of the disk plate 100, as shown in FIG. Figure 3 As shown, a notch 206A1 can be formed on one side (right side on the drawing) of the flange 206A. The notch 206A1 can support the second support 432 in the elastic mechanism part 400 accommodated in the accommodation area 102A from the circumferential outside. For the accommodation area 102A, the notch 206A1 can function as a "first support part".

[0030] On the other hand, a notch 206C2 can be formed on the other side (upper side on the drawing) of the flange 206C. The notch 206C2 can support the fourth support 436 in the elastic mechanism 400 accommodated in the accommodation area 102A from the circumferential outer side. The notch 206C2 can function as a "second supporting portion" for the accommodation area 102A.

[0031] When focusing on the accommodation area 102B of the disk plate 100, as shown in FIG. Figure 3 As shown, a notch 206B1 can be formed on one side (upper side on the paper) of the flange 206B. The notch 206B1 can support the second support 432 in the elastic mechanism part 400 accommodated in the accommodation area 102B from the circumferential outer side. For the accommodation area 102B, the notch 206B1 can function as a "first support part".

[0032] On the other hand, a notch 206A2 can be formed on the other side (left side on the drawing) of the flange 206A. The notch 206A2 can support the fourth support 436 in the elastic mechanism 400 accommodated in the accommodation area 102B from the circumferential outside. The notch 206A2 can function as a "second supporting portion" for the accommodation area 102B.

[0033] When focusing on the accommodation area 102C of the disk plate 100, as shown in FIG. Figure 3 As shown, a notch 206C1 can be formed on one side (upper and lower sides on the paper) of the flange 206C. The notch 206C1 can support the second support 432 in the elastic mechanism part 400 accommodated in the accommodation area 102C from the circumferential outer side. For the accommodation area 102C, the notch 206C1 can function as a "first support part".

[0034] On the other hand, a notch 206B2 can be formed on the other side (upper and lower sides on the paper) of the flange 206B. The notch 206B2 can support the fourth support 436 in the elastic mechanism part 400 accommodated in the accommodation area 102C from the circumferential outer side. For the accommodation area 102C, the notch 206B2 can function as a "second supporting part".

[0035] 1-2. Disc plate 100

[0036] The disk plate 100 can be arranged on the input side of the power transmission path.

[0037] The disk plate 100 can be formed of a metal material, for example. Figure 3 As best shown, the disk plate may be rotatably disposed about a central axis O relative to the hub 200 and the intermediate member 300 so as to sandwich the hub 200 , the intermediate member 300 , and the elastic mechanism portion 400 .

[0038] The disk plate 100 may include a first disk plate 100A and a second disk plate 100B as a pair of members provided on both sides of the hub 200 and the intermediate member 300 in the axial direction. The second disk plate 100B may be generally annular in shape, and the first disk plate 100A may be generally cylindrical in shape.

[0039] The first disc plate 100A and the second disc plate 100B can be connected near their outer peripheries by using a plurality of rivets or the like. The first disc plate 100A and the second disc plate 100B can cooperate with each other to form at least one storage area 102. Here, as an example, three storage areas 102A, 102B, and 102C are formed. Each of these storage areas 102 can partially store a set of elastic mechanism parts 400 (so that a part of the set of elastic mechanism parts 400 is exposed to the outside). In order to form such a storage area 102, as shown in FIG. Figure 3 As best shown, the first disk plate 100A and the second disk plate 100B may include openings at portions corresponding to the respective storage areas.

[0040] The disk plate 100 can accommodate the elastic mechanism portion 400 accommodated in each accommodation area 102. Specifically, Figure 1 to Figure 3As shown, the disc plate 100 can accommodate a group of elastic mechanism parts 400 in the accommodating area 102A, namely, a first elastomer 410, a first support 430 and a second support 432 arranged on both sides of the first elastomer 410, a second elastomer 420, and a third support 434 and a fourth support 436 located on both sides of the second elastomer 420.

[0041] Similarly, the disc plate 100 can accommodate the above-mentioned set of elastic mechanism parts 400 (the first elastomer 410, the first support 430 and the second support 432 arranged on both sides of the first elastomer 410, the second elastomer 420, the third support 434 and the fourth support 436 arranged on both sides of the second elastomer 420) in each accommodating area 102B and 102C.

[0042] Furthermore, the disk plate 100 can support two supports included in the elastic mechanism portion 400 accommodated in each accommodation area 102. First, focus on the accommodation area 102A. Figure 1 and Figure 3 When the first end surface 104A1 of the first disk plate 100A surrounding the storage area 102A (opening) can support the second support 432 from the circumferential outer side by abutting against the second support 432. Similarly, the first end surface 104B1 of the second disk plate 100B surrounding the storage area 102A (opening) can support the second support 432 from the circumferential outer side by abutting against the second support 432.

[0043] In addition, the second end surface 104A2 of the other end of the first disk plate 100A surrounding the storage area 102A (opening) can support the fourth support 436 from the circumferential outer side by abutting against the fourth support 436. Similarly, the second end surface 104B2 of the other end of the second disk plate 100B surrounding the storage area 102A (opening) can support the fourth support 436 from the circumferential outer side by abutting against the fourth support 436.

[0044] Next, we focus on the storage area 102B. Figure 1 and Figure 3 When the first end surface 106A1 of the first disk plate 100A surrounding the storage area 102B (opening) can support the second support 432 from the circumferential outer side by abutting against the second support 432. Similarly, the first end surface 106B1 of the second disk plate 100B surrounding the storage area 102B (opening) can support the second support 432 from the circumferential outer side by abutting against the second support 432.

[0045] In addition, the second end surface 106A2 of the other end of the first disk plate 100A surrounding the storage area 102B (opening) can support the fourth support 436 from the circumferential outer side by abutting against the fourth support 436. Similarly, the second end surface 106B2 of the other end of the second disk plate 100B surrounding the storage area 102B (opening) can support the fourth support 436 from the circumferential outer side by abutting against the fourth support 436.

[0046] Next, we focus on the storage area 102C. Figure 1 and Figure 3 When the first end surface 108A1 of the first disk plate 100A surrounding the storage area 102C (opening) can support the second support 432 from the circumferential outer side by abutting against the second support 432. Similarly, the first end surface 108B1 of the second disk plate 100B surrounding the storage area 102C (opening) can support the second support 432 from the circumferential outer side by abutting against the second support 432.

[0047] In addition, the second end surface 108A2 of the other end of the first disk plate 100A surrounding the storage area 102C (opening) can support the fourth support 436 from the circumferential outer side by abutting against the fourth support 436. Similarly, the second end surface 108B2 of the other end of the second disk plate 100B surrounding the storage area 102C (opening) can support the fourth support 436 from the circumferential outer side by abutting against the fourth support 436.

[0048] 1-3. Intermediate member 300

[0049] The intermediate member 300 can be formed of, for example, a metal material or a resin material. Figure 3 As best shown, the intermediate member 300 sandwiches the hub 200 therebetween and is rotatably disposed about the central axis O relative to the disk plate 100 and the hub 200 .

[0050] The intermediate member 300 can include, for example, two annular first members 300A and second members 300B having substantially the same shape. The first member 300A and the second member 300B can each include an annular member 302 and a plurality of flanges 304 protruding radially from the annular member 302. The disk plate 100 includes three accommodating areas 102, and correspondingly, the first member 300A and the second member 300B can each include three flanges 304 as the plurality of flanges 304.

[0051] The first member 300A and the second member 300B can be joined together by rivets or the like with the hub 200 interposed therebetween and the flange portions 304 facing each other, thereby forming the intermediate member 300 as a whole.

[0052] The three flanges 304 included in the intermediate member 300 can be respectively provided corresponding to any one of the three receiving areas 102. Figure 2 As best shown, the first flange portion 304A is disposed corresponding to the storage area 102A, and similarly, the second flange portion 304B and the third flange portion 304C can be disposed corresponding to the storage area 102B and the storage area 102C, respectively.

[0053] The first flange portion 304A is provided between the first support 430 and the third support 434 accommodated in the accommodation area 102A, and can function as a support portion (common support portion) supporting these first support 430 and the third support 434. Similarly, the second flange portion 304B (the third flange portion 304C) is provided between the first support 430 and the third support 434 accommodated in the accommodation area 102B (the accommodation area 103C), and can function as a support portion (common support portion) supporting these first support 430 and the third support 434. In addition, the specific structure of the first flange portion 304A to the third flange portion 304C (the flange portions 304A to the third flange portion 304C may include the same structure as each other) will be described in detail later.

[0054] 1-4. Elastic mechanism part 400

[0055] like Figure 2 As best shown, as described above, a group of elastic mechanism parts 400 partially accommodated in each accommodating area 102 can include: a first elastomer 410, a first support 430 and a second support 432 arranged on both sides of the first elastomer 410 and supporting the first elastomer 400, a second elastomer 420, and a third support 434 and a fourth support 436 arranged on both sides of the second elastomer 420 and supporting the second elastomer 420.

[0056] The set of elastic mechanism parts 400 accommodated in each of the plurality of accommodation areas 102 may include the same structure in a typical example. Therefore, here, although only the set of elastic mechanism parts 400 accommodated in the accommodation area 102A is focused on, the structure of the set of elastic mechanism parts 400 accommodated in each of the accommodation areas 102B and 102C may be the same as the structure of the set of elastic mechanism parts 400 accommodated in the accommodation area 102A.

[0057] The first elastic body 410 and the second elastic body 420 are respectively formed of a metal material and can extend in a spiral shape from one end to the other end.

[0058] The first support 430 , the second support 432 , the third support 434 , and the fourth support 436 are respectively formed of, for example, a resin material or a metal material.

[0059] like Figure 2 As best shown, the first support 430 as a whole can have a substantially L-shaped cross-sectional shape. With this shape, the first support 430 abuts against the one end 412 of the first elastic body 410 and can support the one end 412 from the circumferential outer side and the radial outer side. Furthermore, the first support 430 can include a snap-fit ​​portion 430a on the side opposite to the one end 412 of the first elastic body 410, and the snap-fit ​​portion 430a is snap-fitted with the first flange portion 304A of the intermediate member 300 and supported by the first flange portion 304A. The specific structure of the snap-fit ​​portion 430a (a shape symmetrical to the snap-fit ​​portion 434a with respect to the first flange portion 304A) will be described in detail later.

[0060] The second support 432 as a whole can have a substantially L-shaped cross-sectional shape. With this shape, the second support 432 abuts against the other end 414 of the first elastic body 410 and can support the other end 414 from the circumferential outer side and the radial outer side. Furthermore, the second support 432 can include a snap-fit ​​portion 432a on the side opposite to the other end 414 of the first elastic body 410, and the snap-fit ​​portion 432a snaps with the first end face 104A1 (104B1) of the disk plate 100 and is supported by the first end face 104A1 (104B1). Although not shown in FIG. Figure 2 However, the engaging portion 432a can also be formed by the cutout 206A1 of the hub 200 (see Figure 3 The specific structure of the engaging portion 432a will be described in detail later.

[0061] The third support 434 as a whole can be in a substantially L-shaped cross-sectional shape. With this shape, the third support 434 abuts against the one end 422 of the second elastic body 420, and can support the one end 422 from the circumferential outer side and the radial outer side. Furthermore, the third support 434 can include a snap-fit ​​portion 434a on the side opposite to the one end 422 of the second elastic body 420, and the snap-fit ​​portion 434a snaps with the first flange portion 304A of the intermediate member 300 and is supported by the first flange portion 304A. The specific structure of the snap-fit ​​portion 434a will be described in detail later. In addition, the third support 434 can also be in a symmetrical shape with the first support 430.

[0062] The fourth support 436 as a whole can have a substantially L-shaped cross-sectional shape. With this shape, the fourth support 436 abuts against the other end 424 of the second elastic body 420 and can support the other end 424 from the circumferential outer side and the radial outer side. Furthermore, the fourth support 436 can include a snap-fit ​​portion 436a on the side opposite to the other end 424 of the second elastic body 420, and the snap-fit ​​portion 436a snaps with the second end face 104A2 (104B2) of the disk plate 100 and is supported by the second end face 104A2 (104B2). Although not shown in Figure 2However, the engaging portion 436a can also be formed by the cutout 206C2 (see Figure 3 ) support. The specific structure of the engaging portion 436a will be described later. In addition, the fourth support 436 may also be symmetrical with the second support 432.

[0063] 2. Operation of the vibration reduction device 10

[0064] Next, the operation of the vibration reduction device 10 having the above-mentioned structure will be described. Figure 1 and Figure 3 The diagram shows an initial state in which the driving force from a driving source such as an engine or a motor is not transmitted to the vibration damping device 10 , or a state in which no phase difference occurs between the disk plate 100 and the hub 200 .

[0065] The power from the driving source such as the engine or the motor can be transmitted in the order of the disk plate 100, the second support 432, the first elastic body 410, the first support 430, the intermediate member 300, the third support 434, the second elastic body 420, the fourth support 436 and the hub 200. If the storage area 102A is focused on, the power is first transmitted from the first end surface 104A1 (104B1) in the disk plate 100 to the second support 432. The second support 432 bends the first elastic body 410 and transmits the power to the first support 430. The first support 430 transmits the power to the first flange portion 304A in the intermediate member 300. The first flange portion 304A bends the second elastic body 420 via the third support 434 and transmits the power to the fourth support 436. Finally, the fourth support 436 can transmit the power to the hub 200 via the cutout 206C2 of the hub 200.

[0066] Similarly, the accommodation region 102B can be transmitted from the first end surface 106A1 ( 106B1 ) of the disk plate 100 to the notch 206A2 of the hub 200 via a group of elastic mechanism portions 400 disposed in the accommodation region 102B.

[0067] Similarly, in the accommodation region 102C, the force can be transmitted from the first end surface 108A1 ( 108B1 ) of the disk plate 100 to the notch 206B2 of the hub 200 via the set of elastic mechanism portions 400 disposed in the accommodation region 102C.

[0068] On the other hand, when the torque transmitted to the disk plate 100 is positive (for example, during acceleration), Figure 1 and Figure 3Although not shown in the figure, the disc plate 100 can rotate counterclockwise relative to the hub 200 on the paper. As a result, the fourth support 436 is pressed toward the third support 434 by the second end surface 104A2 (104B2), thereby opposing the second elastic body 420, leaving the cutout 206C2 of the hub 200, and approaching the third support 434. Furthermore, the first support 430 is pressed against the first elastic body 410 by the third support 434 and the first flange portion 304A of the intermediate member 300, so that the second support 432 approaches the second support 432. Since the hub 200 is relatively stationary, the second support 432 supported by the cutout 206A1 of the hub 200 does not slide. Therefore, the first elastic body 410 and the second elastic body 420 shrink, and the first end surface 104A1 (104B1) of the disc plate 100 releases the support for the second support 432 and leaves the second support 432.

[0069] After that, the first elastic body 410 and the second elastic body 420 are stretched to return to their original shapes, and the second support 432 urged by the first elastic body 410 presses the notch 206A1 of the hub 200 counterclockwise on the drawing. As a result, the hub 200 rotates counterclockwise, and the input shaft of the transmission (not shown) rotates.

[0070] Such an operation is also performed in the same manner on a pair of elastic mechanism portions 400 respectively arranged in the storage area 102B and the storage area 102C.

[0071] On the other hand, when the torque transmitted to the disk plate 100 is negative (for example, when decelerating due to engine braking), Figure 1 and Figure 3 Although not shown in the figure, the disk plate 100 can rotate clockwise relative to the hub 200 on the paper. As a result, the second support 432 is pressed toward the first support 430 by the first end surface 104A1 (104B1), thereby opposing the first elastic body 410, leaving the cutout 206A1 of the hub 200, and approaching the first support 430. Furthermore, the third support 434 is pressed against the second elastic body 420 by the first support 430 and the first flange portion 304A of the intermediate member 300, and approaches the fourth support 436. Since the hub 200 is relatively stationary, the fourth support 436 supported by the cutout 206C2 of the hub 200 does not slide. Therefore, the first elastic body 410 and the second elastic body 420 contract, and the second end surface 104A2 (104B2) of the disk plate 100 releases the support for the fourth support 436 and leaves the fourth support 436.

[0072] After that, the first elastic body 410 and the second elastic body 420 are stretched and restored to their original shapes, and the fourth support 436, which is urged by the second elastic body 420, presses the cutout 206C2 of the hub 200 in the clockwise direction on the drawing. As a result, the hub 200 rotating counterclockwise is decelerated, and further, the input shaft of the transmission (not shown) is decelerated.

[0073] Such an operation is also performed on a pair of elastic mechanism portions 400 respectively arranged in the storage area 102B and the storage area 102C.

[0074] 3. Structure and operation of the first support 430 and the third support 434

[0075] First, for convenience of explanation, focus on the third support 434 .

[0076] Figure 4 It is a schematically enlarged representation Figure 2 FIG. 4 is a diagram showing a structure including a portion of the third support 434 in the vibration damping device 10 .

[0077] like Figure 4 As shown, the third support 434 can include a snap-fit ​​portion 434a on the opposite side of the second elastic body 420. The snap-fit ​​portion 434a can have a substantially inverted S-shaped cross section. Such a third support 434 can rotate around a fulcrum 434b with the point abutting against the first flange portion 304A of the intermediate member 300 as a fulcrum 434b.

[0078] Furthermore, the engagement portion 434a may include a contact surface (second contact surface) 434a1 which is separated from the fulcrum 434b by a radius (second radius) R2 and has a cross section extending in an arc shape. The radius R2 is larger than a radius R1 described below.

[0079] On the other hand, the first flange portion 304A of the intermediate member 300 may include a snap-fit ​​portion 304a on a surface opposite to the third support 434. The snap-fit ​​portion 304a has a substantially inverted S-shaped cross section along the snap-fit ​​portion 434a of the third support 434 in order to abut and support the third support 434 from the circumferential outside. In addition, the snap-fit ​​portion 304a may include a contact surface (first contact surface) 304a1, which is separated from the fulcrum 434b by a radius (first radius) R1 and has a cross section extending in an arc shape. In addition, the radius R1 is smaller than the above-mentioned radius R2. In a preferred example, the radius R1 is slightly smaller than the above-mentioned radius R2 (that is, the radius R2 is slightly larger than the radius R1 to the extent that the third support 434 can rotate, in other words, the radius R1 and the radius R2 are substantially the same).

[0080] In addition, Figure 4In the example shown, the fulcrum 434b is arranged radially outward from the second contact surface 434a1. That is, the distance between the second contact surface 434a1 and the rotation center of the vibration reduction device 10 is smaller than the distance between the fulcrum 434b and the rotation center of the vibration reduction device 10.

[0081] According to this structure, the third support 434 can resist the second elastic body 420 by being subjected to centrifugal force, and rotate in the counterclockwise direction on the paper around the fulcrum 434b, and then, by being applied with force by the second elastic body 420, it can rotate in the clockwise direction on the paper around the fulcrum 434b. When rotating in this way, the third support 434 can make the second contact surface 434a1 slide relative to the first contact surface 304a1 of the engaging portion 304a. Thus, when the third support 434 rotates around the fulcrum 434b, the first contact surface 304a1 and the second contact surface 434a1 having substantially the same radius of curvature slide in contact with each other. Therefore, the third support 434 can rotate in a stable manner by the second contact surface 434a1 being supported by the first contact surface 304a1 (not a point) with a larger area. In this way, since the second contact surface 434a1 is supported by the first contact surface 304a1 (not a point) with a larger area, the wear caused by the sliding between the second contact surface 434a1 and the first contact surface 304a1 can be greatly suppressed, and the centrifugal force acting on the third support 434 is reliably received by the first contact surface 304a1 via the second contact surface 434a1. Therefore, the third support 434 can rotate in a stable manner.

[0082] In addition, in a preferred example, the third support 434 can include the structure described below. Figure 5A It is a schematically enlarged representation Figure 2 FIG. 2 is a diagram showing another example of a structure including a portion of the third mount 434 in the vibration damping device 10 .

[0083] Figure 5A The left side shows a structure including a portion of the third support 434 and the like in an initial state without wear, and the right side shows a structure including a portion of the third support 434 and the like in a state after wear.

[0084] When focusing on Figure 5A , the third support 434 is initially arranged such that its outer edge 434c protrudes radially outward from the fulcrum 434b. In other words, the third support 434 is initially arranged such that the distance between its outer edge 434c and the rotation center of the vibration reduction device 10 is greater than the distance between the fulcrum 434b and the rotation center of the vibration reduction device 10.

[0085] When focusing on Figure 5AWhen the second contact surface 434a1 is worn, the third support 434 can make the worn second contact surface 434a2 face the first contact surface 304a1 of the intermediate member 300 (first flange portion 304A). Figure 5A The third support 434 rotates with the same fulcrum 434b as shown on the left. Figure 5A In the state shown on the left side of , the second contact surface 434a2 can slide relative to the first contact surface 304a1. Thus, when the third support 434 rotates around the fulcrum 434b, the second contact surface 434a2 is supported by the first contact surface 304a1 (not a point) with a larger area, and can still rotate in a stable manner.

[0086] To make it easier to understand Figure 5A The effect of the structure shown is shown in Figure 5B . Figure 5B It is a schematically enlarged representation Figure 2 FIG. 4 is a diagram showing another example of a portion of the structure including the third support 434 in the vibration damping device 10 .

[0087] Figure 5B The left side shows a structure including a portion of the third support 434 and the like in an initial state without wear, and the right side shows a structure including a portion of the third support 434 and the like in a state after wear.

[0088] When focusing on Figure 5B When the third support 434 is to the left of the vibration damping device 10, the third support 434 is not set to have its outer edge 434c' protrude radially outward from the fulcrum 434b' in the initial state, but is set to have its outer edge 434c' and the fulcrum 434b' be almost the same. In other words, the third support 434 is set to have the distance between its outer edge 434c' and the rotation center of the vibration damping device 10 and the distance between the fulcrum 434b' and the rotation center of the vibration damping device 10 be almost the same in the initial state. Here, the second contact surface 434a 11 The first contact surface 304a1 is a contact surface that is spaced apart from the fulcrum 434b' by a radius (second radius) R2 and has a cross section extending in an arc shape. The first contact surface 304a1 is a contact surface that is spaced apart from the fulcrum 434b' by a radius (first radius) R1 and has a cross section extending in an arc shape.

[0089] When focusing on Figure 5B When the second contact surface 434a is on the right side 11 The third support 434 causes the worn second contact surface 434a to 22 The third support 434 faces the first contact surface 304a1 of the intermediate member 300 (the first flange portion 304A). Figure 5BThe state shown on the left is different from that shown on the left, and the rotation is not around the fulcrum 434b' but around a different fulcrum 434b". As a result, the second contact surface 434a 22 The contact surface 304a1 is no longer a contact surface having a cross section extending in an arc shape and separated from the fulcrum 434b" by a radius (second radius) R2. In addition, the first contact surface 304a1 is no longer a contact surface having a cross section extending in an arc shape and separated from the fulcrum 434b" by a radius (first radius) R1. Therefore, when the third support 434 rotates around the fulcrum 434b", it is difficult for the second contact surface 434a1 to 22 Slide smoothly relative to the first contact surface 304a1.

[0090] In this way, using Figure 5A The third support 434 of the structure shown is similar to the one using Figure 5B Compared with the third support 434 of the structure shown, it can still rotate with a stable motion even after the second contact surface is worn.

[0091] Furthermore, in a preferred example, the third support 434 can include the structure described below. Figure 6 It is a schematically enlarged representation Figure 2 FIG. 1 is a diagram showing another example of a portion of the structure including the third support 434 in the vibration damping device 10 .

[0092] Figure 6 It shows that the third support 434 is located at the position (first position) finally reached by continuously rotating around the fulcrum 434b in the first rotation direction (here, clockwise direction), that is, the third support 434 is located at the position (first position) configured without opposing the second elastic body 420 but by being forced by the second elastic body 420.

[0093] When the third support 434 is subjected to the centrifugal force and continuously rotates in the second rotation direction (here, counterclockwise) around the fulcrum 434b against the second elastic body 420, the outer edge 434d of the outer edge of the third support 434, which is located farthest from the fulcrum 434b, abuts against the wall surface of the disk plate 100 surrounding the accommodating area 102A, so that the third support 434 cannot continue to rotate. In this way, the third support 434 continues to rotate in the second rotation direction opposite to the first rotation direction, and thus reaches the final position (second position).

[0094] In a preferred example, the second contact surface 434a1 and the first contact surface 304a1 are provided in such a manner that the second contact surface 434a1 always intersects the straight line L connecting the fulcrum 434b and the rotation center of the vibration reduction device 10 during the rotation of the third support 434 between the first position and the second position. Thus, when the third support 434 is located between the first position and the second position (i.e., always), the second contact surface 434a1 intersects the straight line L (and further, the first contact surface 304a1 opposite to the second contact surface 434a1 also intersects the straight line L). That is, the second contact surface 434a1 and the first contact surface 304a1 always exist in the direction in which the centrifugal force acts, i.e., the direction in which the straight line L extends. Therefore, the centrifugal force acting on the third support 434 is always received by the first contact surface 304a1 via the second contact surface 434a1, and thus the third support 434 can rotate in a more stable manner.

[0095] The above description focuses on the third support 434, but various structural examples of the third support 434 can also be applied to the first support 430 (see FIG. Figure 2 In this case, the first flange portion 304A can include, on the surface facing the first support 430, the engaging portion 304a included on the surface facing the third support 434 (see Figures 4 to 6 Here, the engaging portion supporting the first support 430 and the engaging portion 304a supporting the third support 434 can be symmetrical. Thus, the first support 430 is subjected to centrifugal force and can rotate clockwise around the fulcrum, and is applied force by the first elastic body 410 and can rotate counterclockwise around the fulcrum.

[0096] 4. Structure and operation of the second support 432

[0097] In the first example, if Figure 2 As best shown, the second support 432 as a whole has a substantially L-shaped cross-sectional shape. With this shape, as described above, the second support 432 abuts against the other end 414 of the first elastic body 410 and can support the other end 414 from the circumferential outer side and the radial outer side. Furthermore, the second support 432 can include a snap-fit ​​portion 432a on the side opposite to the other end 414 of the first elastic body 410, and the snap-fit ​​portion 432a snaps with the first end face 104A1 of the disk plate 100 and is supported by the first end face 104A1. Although Figure 2 2. However, the engaging portion 432a can also be formed by the cutout 206A1 (see Figure 3 ) support.

[0098] In a second example, the second support 432 can also include the same Figures 4 to 6In the case where the second support 432 includes this structure, the first end surface 104A1 of the disk plate 100 supporting the second support 432 and the cutout 206A1 of the hub 200 can also have the above-mentioned structure of the first flange portion 304A for supporting the third support 434 (see above). Figures 4 to 6 In this case, the second support 432 is subjected to centrifugal force and rotates counterclockwise around the fulcrum, and is urged by the first elastic body 410 to rotate clockwise around the fulcrum. Thus, the second support 432 can rotate in a stable manner, similar to the third support 434.

[0099] 5. Structure and operation of the fourth support 436

[0100] In the first example, if Figure 2 As best shown, the fourth support 436 can be substantially L-shaped in cross section as a whole. By forming this shape, as described above, the fourth support 436 abuts against the other end 424 of the second elastic body 420 and can support the other end 424 from the circumferential outer side and the radial outer side. Furthermore, the fourth support 436 can include a snap-fit ​​portion 436a on the side opposite to the other end 424 of the second elastic body 420, and the snap-fit ​​portion 436a is snap-fitted with the second end face 104A2 of the disk plate 100 and supported by the second end face 104A2. Although not shown in FIG. Figure 2 However, the engaging portion 436a can be formed by the cutout 206C2 (see Figure 3 ) support.

[0101] In the second example, the fourth support 436 can also include the same structure as the first support 430, and the first support 430 includes the same structure as described above with reference to Figures 4 to 6 When the fourth support 436 includes this structure, the second end surface 104A2 of the disk plate 100 supporting the fourth support 436 and the cutout 206C2 of the hub 200 also have the above-mentioned structure that the first flange portion 304A has in order to support the first support 430 (see above). Figures 4 to 6 In this case, the fourth support 436 is subjected to the centrifugal force and rotates clockwise around the fulcrum, and is urged by the second elastic body 420 to rotate counterclockwise around the fulcrum. Thus, the fourth support 436 can rotate in a stable manner, similar to the third support 434, the first support 430, and the second support 432 described above.

[0102] So far, for convenience, refer to Figures 4 to 6The elastic mechanism 400 and the related components are described in the above description. However, the same description is applicable to the elastic mechanism 400 and the related components in the storage area 102B (storage area 102C).

[0103] 6. Modifications

[0104] In the various embodiments described above, the following features are described in detail with reference to the accompanying drawings: a certain support takes the point at which it abuts against the matching component supporting the support as a fulcrum, and by rotating around the fulcrum, a second contact surface of the support, which is separated from the fulcrum by a second radius larger than the first radius and has a cross-section extending in a circular arc, slides relative to a first contact surface of the matching component, which is separated from the fulcrum by a first radius and has a cross-section extending in a circular arc.

[0105] This feature can be applied to at least one of the first support 430, the second support 432, the third support 434 and the fourth support 436 disposed in a receiving area (e.g., the receiving area 102A) (and a matching member supporting the target support). In addition, each support other than the target support can include any structure, such as Figure 2 The second support 432 or the fourth support 436 shown in the figure has the same structure, or has the same structure as the support disclosed in Patent Document 1.

[0106] Here, in the case where the at least one counterpart support includes the first support 430 , the mating member supporting the first support 430 is the common supporting portion (the first flange portion 304A) of the intermediate member 300 .

[0107] When the at least one target support includes the second support 432, the mating member supporting the second support 432 is the first end surface 104A1 of the first rotating body (disc plate 100) and / or the first supporting portion (cutout 206A1) of the second rotating body (hub 200).

[0108] In the case where the at least one counterpart support includes the third support 434 , the mating member supporting the third support 434 is the common support portion (the first flange portion 304A) of the intermediate member 300 .

[0109] When the at least one object support includes a fourth support 436, the mating component supporting the fourth support 436 is the second end surface 104A2 of the first rotating body (disc plate 100) and / or the second support portion (206C2) of the second rotating body (hub 200).

[0110] In addition, those skilled in the art who benefit from the present disclosure will easily understand that, as long as the above-mentioned examples do not cause contradictions, they can be appropriately combined with each other in various modes for use.

[0111] 7. Various methods

[0112] The vibration reduction device of the first mode can adopt the following structure: "having: a first rotating body, including a accommodating area extending in the circumferential direction, rotating around a rotation axis; an intermediate member, including a common support portion accommodated in the accommodating area, rotatably arranged relative to the first rotating body around the rotation axis; a first support, accommodated in the accommodating area and supported by the common support portion; a second support, accommodated in the accommodating area, supported by a first end face surrounding one end of the accommodating area; a first elastic body, sandwiched between the first support and the second support; a third support, accommodated in the accommodating area, supported by the common support portion, and the common support portion is arranged in a manner of being sandwiched between the first support and the third support; a fourth support, accommodated in the accommodating area, supported by a second end face surrounding the other end of the accommodating area The cam is a first support member which is configured to extend the length of the second support member and to extend the length of the second support member to a position adjacent to the cam. The cam is a second support member which is configured to extend the length of the second support member to a position adjacent to the cam.

[0113] According to this structure, the object support can resist the elastic body by being subjected to centrifugal force, and rotate in the first rotation direction around the fulcrum, and then, by being applied with force by the elastic body, it can rotate in the second rotation direction around the fulcrum. When rotating in this way, the object support can make the second contact surface slide relative to the first contact surface. Thus, when the object support rotates around the fulcrum, the first contact surface and the second contact surface having substantially the same radius of curvature slide in abutment (contact). Therefore, the second contact surface is supported by the first contact surface (not a point) with a larger area, and the object support can rotate with a stable behavior. In this way, the second contact surface is supported by the first contact surface (not a point) with a larger area, so that the wear caused by the sliding of the second contact surface and the first contact surface can be greatly suppressed, and then, the centrifugal force acting on the object support is reliably borne by the first contact surface via the second contact surface. Therefore, the object support can rotate with a stable behavior.

[0114] The vibration reduction device of the second embodiment can adopt the following structure: "When the at least one target support includes the first support, the matching member supporting the first support is the common support portion of the intermediate member; when the at least one target support includes the second support, the matching member supporting the second support is the first end surface of the first rotating body and / or the first support portion of the second rotating body; when the at least one target support includes the third support, the matching member supporting the third support is the common support portion of the intermediate member; when the at least one target support includes the fourth support, the matching member supporting the fourth support is the second end surface of the first rotating body and / or the second support portion of the second rotating body."

[0115] According to this structure, for at least one holder accommodated in the accommodation region, wear caused by sliding between the holder and the mating member of the holder can be suppressed, and the holder can be rotated with stable behavior.

[0116] The vibration reduction device of the third aspect may adopt the following structure: "The distance between the second contact surface and the rotation center of the vibration reduction device is smaller than the distance between the fulcrum and the rotation center."

[0117] According to this configuration, since the fulcrum is located radially outward from the second contact surface, the counterpart carrier is subjected to centrifugal force to rotate about the fulcrum and can move radially outward.

[0118] The vibration reduction device of the fourth aspect can adopt the following structure: "The distance between the outer edge of the at least one target support and the rotation center of the vibration reduction device is greater than the distance between the fulcrum and the rotation center."

[0119] According to this structure, even after the second contact surface is worn, the object holder can still rotate with a stable behavior.

[0120] The vibration reduction device of the fifth aspect can adopt the following structure: "While the at least one object support rotates around the fulcrum between a first position finally reached by continuous rotation in a first rotation direction and a second position finally reached by continuous rotation in a second rotation direction opposite to the first rotation direction, the second contact surface intersects a straight line connecting the fulcrum and the rotation center of the vibration reduction device."

[0121] According to this configuration, the centrifugal force acting on the counterpart support is always received by the first contact surface via the second contact surface, and therefore the counterpart support can be rotated with a more stable behavior.

[0122] This application is based on and enjoys the benefit of priority of Japanese Patent Application No. 2022-107532, entitled “Vibration Damping Device”, filed on July 4, 2022. The entire contents of the Japanese Patent Application are cited in this specification.

[0123] Description of Reference Numerals

[0124] 10Vibration reduction device

[0125] ORotation axis

[0126] L Straight Line

[0127] 100 disc plates

[0128] 100A first disc plate

[0129] 100B second disc plate

[0130] 102, 102A, 102B, 102C accommodation area

[0131] 104A1, 104B1, 106A1, 106B1, 108A1, 108B1 first end surface

[0132] 104A2, 104B2, 106A2, 106B2, 108A2, 108B2 second end surface

[0133] 200 wheel hub

[0134] 206, 206A, 206B, 206C flange

[0135] 206A1, 206A2, 206B1, 206B2, 206C1, 206C2 incisions

[0136] 300 intermediate components

[0137] 304 flange

[0138] 304A: First flange (common support portion)

[0139] 304B Second flange portion (common support portion)

[0140] 304C Third flange (common support part)

[0141] 304a engagement portion

[0142] 304a1 contact surface (first contact surface)

[0143] R1 radius (first radius)

[0144] 400 Elastic Mechanism

[0145] 410 first elastic body

[0146] 420 third elastic body

[0147] 430 first support

[0148] 434a snap-fit ​​part

[0149] 434a1, 434a2 second contact surface

[0150] R2 radius (second radius)

[0151] 434b pivot point

[0152] 434c, 434d outer edge

[0153] 432 Second support

[0154] 434 The third support

[0155] 436 Fourth support

Claims

1. A vibration reduction device, wherein: have: A first rotating body, comprising a accommodating area extending in a circumferential direction and rotating around a rotation axis; an intermediate member, including a common support portion accommodated in the accommodation area and rotatably arranged relative to the first rotating body about the rotation axis; A first support, accommodated in the accommodation area and supported by the common supporting portion; A second support, accommodated in the accommodation area and supported by a first end surface surrounding one end of the accommodation area; A first elastic body, sandwiched between the first support and the second support; a third support, which is accommodated in the accommodation area and supported by the common support portion, and the common support portion is arranged in a manner of being sandwiched between the first support and the third support; a fourth support, accommodated in the accommodation area and supported by a second end surface surrounding the other end of the accommodation area; A second elastic body, sandwiched between the third support and the fourth support; as well as A second rotating body, comprising a first supporting portion supporting the second support and a second supporting portion supporting the fourth support, and being rotatably arranged relative to the first rotating body and the intermediate member around the rotation axis; At least one of the first support, the second support, the third support and the fourth support uses the point at which the at least one object support abuts against the matching component supporting the at least one object support as a fulcrum, and rotates around the fulcrum so that a second contact surface of the at least one object support, which is separated from the fulcrum by a second radius larger than the first radius and has a cross-section extending in a circular arc, slides relative to a first contact surface of the matching component, which is separated from the fulcrum by the first radius and has a cross-section extending in a circular arc.

2. The vibration reduction device according to claim 1, wherein: In the case where the at least one object support includes the first support, the mating member supporting the first support is the common supporting portion of the intermediate member, In the case where the at least one object support includes the second support, the mating member supporting the second support is the first end surface of the first rotating body and / or the first supporting portion of the second rotating body, In the case where the at least one object support includes the third support, the mating member supporting the third support is the common supporting portion of the intermediate member, In the case where the at least one object support includes the fourth support, the mating member supporting the fourth support is the second end surface of the first rotating body and / or the second supporting portion of the second rotating body.

3. The vibration damping device according to claim 1 or 2, wherein: The distance between the second contact surface and the rotation center of the vibration reduction device is smaller than the distance between the fulcrum and the rotation center.

4. The vibration reduction device according to claim 1 or 2, wherein: The distance between the outer edge of the at least one object support and the rotation center of the vibration reduction device is greater than the distance between the fulcrum and the rotation center.

5. The vibration reduction device according to claim 1 or 2, wherein: During rotation of the at least one object support around the fulcrum between a first position ultimately reached by continuous rotation in a first rotation direction and a second position ultimately reached by continuous rotation in a second rotation direction opposite to the first rotation direction, the second contact surface intersects a straight line connecting the fulcrum and the rotation center of the vibration damping device.

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