shock absorber

Abstract

A shock absorber including a spoke spring buffer member (10), wherein the spoke spring buffer member (10) includes a central part (11), a plurality of spoke springs (12), and an outer ring portion (13), the outer ring portion (13) coaxially surrounding the radially outer side of the central part (11), the plurality of spoke springs (12) are each connected radially between the outer ring portion (13) and the central part (11) and distributed at intervals along the circumferential direction, and the plurality of spoke springs (12) are such that the outer ring portion (13) is relative to the central part (11) The shock absorber is elastically deformable to allow rotation and further includes a cover plate (20), the cover plate (20) being fixed to the axial side of the central part (11) and rotatably in contact with the outer ring (13) directly or indirectly so that the cover plate (20) can directly or indirectly contact the outer ring (13) as the outer ring (13) rotates relative to the central part (11), thereby reducing the risk of the spoke spring buffer member (10) deforming toward one axial side.

Description

TECHNICAL FIELD

[0001] The present invention relates to the field of vehicle technology. Specifically, the present invention relates to a shock absorber for a power transmission system of an automobile.

BACKGROUND ART

[0002] In conventional fuel vehicles or hybrid vehicles, the crankshaft of an internal combustion engine is often affected by torque vibration. The torque vibration of the crankshaft causes damage to the crankshaft and problems of NVH (Noise, Vibration and Harshness). At present, the conventional solution to this problem is to install a rubber shock absorber (TVD). The TVD (torsional vibration damper) mainly consumes the energy of torsional vibration by utilizing the friction generated when the outer ring with a large moment of inertia rotates relative to the rubber elastic element, thereby reducing the torsional amplitude of the crankshaft and avoiding resonance within the normal operating rotation speed range. However, such shock absorbers are often difficult to provide sufficient damping effect against the torsional vibration of the crankshaft due to the limitation of installation space, and rubber is prone to degrade under the thermal effect of friction, which affects the service life.

[0003] Chinese Patent Application Publication No. 115182963 discloses a novel spoke spring type shock absorber. Such a spoke spring type shock absorber includes a plurality of spoke spring cushioning members, each of which has a different radial dimension, so that it can provide multi-order frequencies to cushion the torque vibration of the crankshaft. Since different spoke spring cushioning members have different shapes and dimensions, such a shock absorber requires a more complicated machining process and higher manufacturing cost. In addition, the magnitude of damping provided by such a shock absorber only depends on the respective shapes of the spoke spring cushioning members and the friction between them, and the finished shock absorber cannot flexibly adjust the damping as needed.

SUMMARY OF THE INVENTION

[0004] Therefore, the technical problem that the present invention aims to solve is to provide an improved shock absorber. [Means for solving the problem]

[0005] The above technical problems are solved by the shock absorber according to the present invention. The shock absorber includes a spoke spring cushioning member comprising a central part, a plurality of spoke springs, and an outer ring portion, the outer ring portion coaxially surrounding the radially outer side of the central part, the plurality of spoke springs each connected radially between the outer ring portion and the central part and distributed spaced apart circumferentially, and the plurality of spoke springs are elastically deformable to allow the outer ring portion to rotate relative to the central part. The shock absorber further includes a cover plate, the cover plate fixed to the axial side of the central part and in direct or indirect contact with the outer ring portion so as to be rotatable relative to the outer ring portion, the cover plate in direct or indirect frictional contact with the outer ring portion when the outer ring portion rotates relative to the central part. When torque vibration occurs, the spoke spring elastically deforms, causing the outer ring to rotate within a certain range relative to the center, thereby damping the torque vibration. At this time, since the cover plate is fixed relative to the center, the outer ring also rotates relative to the cover plate, causing relative sliding between the cover plate and the outer ring, providing additional friction damping to the shock absorber. Furthermore, the cover plate located on one axial side of the spoke spring damping member can provide axial constraint to the outer ring, thereby causing the spoke spring to elastically deform in a predetermined manner in a plane that is basically perpendicular to the axial direction.

[0006] According to a preferred embodiment of the present invention, the shock absorber may further include a diaphragm spring that abuts between the cover plate and the outer ring and abuts relative to at least one of the cover plate and the outer ring in a rotatable manner. This ensures that the cover plate abuts indirectly with the outer ring via the diaphragm spring, and that the elastically compressed diaphragm spring applies a pressing force to the contact surface by elastic force, thereby ensuring that the contact surface generates sufficient frictional force.

[0007] According to another preferred embodiment of the present invention, the diaphragm spring is fixedly connected to one of the cover plate and the outer ring and can make relative rotatable contact with the other. This facilitates the mounting and positioning of the diaphragm spring to the shock absorber.

[0008] According to another preferred embodiment of the present invention, the diaphragm spring is fixedly connected to the outer ring and can rotatably contact the cover plate. Fixed connection between the diaphragm spring and the outer ring is easily achieved.

[0009] According to another preferred embodiment of the present invention, the shock absorber may further include a friction gasket, and the diaphragm spring is indirectly in contact with the cover plate via the friction gasket. The friction gasket can have good wear resistance, thereby providing sufficient frictional force while reducing wear on the cover plate and diaphragm spring, and further avoiding noise due to steel-to-steel friction.

[0010] According to another preferred embodiment of the present invention, the friction gasket may include an axial section and a radial section, the axial section abutting the radially outer side of the cover plate, and the radial section extending radially inward from the axial end of the axial section and abutting the side of the cover plate toward the spoke spring buffer member. This allows the friction gasket to have an L-shaped cross-section and to be positioned on the outer edge of the cover plate by shape fitting.

[0011] According to another preferred embodiment of the present invention, the shock absorber may further include one or more first fastening members, each of which fastens the cover plate and the center by passing through the cover plate and the center in an axial direction, and / or the shock absorber may further include one or more second fastening members, each of which fastens the diaphragm spring and the outer ring by passing through the diaphragm spring and the outer ring in an axial direction. Such fastening members may be bolts, screws or rivets, etc.

[0012] According to another preferred embodiment of the present invention, the cover plate can be manufactured from an elastic material such that the cover plate is pressed against the outer ring by elastic deformation. The cover plate provides pressing force to the contact surfaces by elastic deformation, thereby ensuring that sufficient frictional force can be generated between the contact surfaces.

[0013] According to another preferred embodiment of the present invention, the cover plate includes a radially inner portion, an arched portion, and an edge portion, the radially inner portion being fixed to the center, the edge portion coaxially surrounding the radially outer portion of the radially inner portion, and the arched portion being connected between the radially inner portion and the edge portion and arching away from the spoke spring buffer member so that the edge portion is pressed against the outer ring. The cover plate can undergo elastic deformation due to the arched portion.

[0014] According to another preferred embodiment of the present invention, the cover plate may include one or more through-windows for discharging contaminants. The window holes may be formed in a portion of the cover plate that does not come into contact with the spoke spring cushioning member, and contaminants on the spoke spring cushioning member can be discharged from the shock absorber through the window holes under the action of centrifugal force.

[0015] According to another preferred embodiment of the present invention, the shock absorber may include two cover plates, each positioned on either the axial side of the spoke spring cushioning member and directly or indirectly contacting the outer ring portion so as to be rotatable relative to each other. The two cover plates can apply opposing pressure to both the axial sides of the spoke spring cushioning member, thereby reducing the risk of the spoke spring cushioning member deforming toward one axial side.

[0016] The present invention will be further described below with reference to the attached drawings. In the drawings, the same reference numerals represent elements having the same function. [Brief explanation of the drawing]

[0017] [Figure 1] A three-dimensional view of a shock absorber according to one exemplary embodiment of the present invention is shown. [Figure 2] Figure 1 shows a three-dimensional view of the shock absorber. [Figure 3] Figure 1 shows a cross-sectional view of the shock absorber. [Figure 4] A three-dimensional view of a shock absorber according to another exemplary embodiment of the present invention is shown. [Figure 5] A three-dimensional view of a shock absorber according to yet another exemplary embodiment of the present invention is shown. [Figure 6] Figure 5 shows a cross-sectional view of the shock absorber. [Modes for carrying out the invention]

[0018] Specific embodiments of the shock absorber according to the present invention will be described below with reference to the accompanying drawings. The following detailed description and accompanying drawings are used to illustrate the principles of the present invention, and the present invention is not limited to the preferred embodiments described, and the scope of protection of the present invention is defined by the claims.

[0019] According to the embodiments of the present invention, a shock absorber for a vehicle power transmission system is provided. Such a shock absorber is particularly used for being mounted on the crankshaft of an internal combustion engine to dampen torque vibrations of the crankshaft. Such a shock absorber can provide cushioning and vibration reduction effects based on spoke springs and additional friction damping.

[0020] Hereinafter, the specific structure of the shock absorber according to the present invention will be described with reference to the exemplary embodiments shown in Figures 1 to 3. Figures 1 and 2 show perspective views of a shock absorber according to one exemplary embodiment of the present invention, and Figure 3 shows a cross-sectional view of a cross-section passing through the central axis of the shock absorber.

[0021] As shown in Figure 1, the shock absorber as a whole presents a substantially disc shape. As shown in Figure 3, the shock absorber of this embodiment mainly includes a spoke spring cushioning member 10, a cover plate 20 and a diaphragm spring 30. The perspective view in Figure 2 is obtained by removing the cover plate 20 in Figure 1 to more clearly show the structure of the spoke spring cushioning member 10.

[0022] The spoke spring buffer member 10 may be a single-piece component, or it may be a single piece formed by laminating and fixing a multilayer structure. As shown in Figure 2, the spoke spring buffer member 10 includes a central part 11, a plurality of spoke springs 12, and an outer ring portion 13. The spoke spring buffer member 10 has a central axis parallel to the longitudinal direction. The central part 11 is an annular plate-shaped component formed around the longitudinal central axis. The outer ring portion 13 coaxially surrounds the radially outer side of the central part 11 and is spaced radially apart from the central part 11. Each spoke spring 12 basically extends radially between the outer ring portion 13 and the central part 11, thereby integrally connecting the outer ring portion 13 and the central part 11. The plurality of spoke springs 12 of the spoke spring buffer member 10 are distributed spaced apart along the circumferential direction, preferably uniformly distributed along the circumferential direction, and each spoke spring 12 may preferably have substantially the same shape and dimensions. The spoke spring damper member 10 is connected to the crankshaft of the internal combustion engine by torsional resistance and can rotate together with the crankshaft of the internal combustion engine around the central axis of the spoke spring damper member 10. Since these spoke springs 12 of the spoke spring damper member 10 are manufactured from an elastic material, when torque vibration occurs in the spoke spring damper member 10, these spoke springs 12 can elastically deform, thereby allowing the outer ring portion 13 to rotate relative to the central portion 11 within a certain range (depending on the magnitude of the torque and the elastic deformation capacity of the spoke springs 12) around the central axis, thereby damping the torque vibration.

[0023] As shown in Figure 3, the shock absorber includes one or two cover plates 20. Each cover plate 20 is a substantially disc-shaped component formed around the central axis, is coaxially mounted on one axial side of the spoke spring cushioning member 10, and is fixed to the corresponding axial side portion of the central portion 11. The fixed connection between the cover plate 20 and the central portion 11 can be achieved, for example, by one or more first fastening members 50 (such as rivets, screws or bolts), and these first fastening members 50 are arranged at intervals along the circumferential direction, in particular may be arranged at uniform intervals. Each first fastening member 50 penetrates through the cover plate 20 and the central portion 11 along the axial direction, thereby fixing the cover plate 20 and the central portion 11 together. When the shock absorber includes two cover plates 20, the two cover plates 20 are respectively located on both axial sides of the spoke spring cushioning member 10, such that the spoke spring cushioning member 10 is positioned between the two cover plates 20 in the axial direction. At this time, each first fastening member 50 can simultaneously penetrate through the two cover plates 20 and the central portion 11 along the axial direction. Each cover plate 20 is spaced apart from the spoke springs 12 and the outer ring portion 13 of the spoke spring cushioning member 10 along the axial direction, and the outer ring portion 13 also rotates synchronously relative to each cover plate 20 when rotating relative to the central portion 11.

[0024] Correspondingly, the shock absorber includes one or two diaphragm springs 30. In one shock absorber, the number of the diaphragm springs 30 is the same as the number of the cover plates 20, and each diaphragm spring 30 corresponds to one corresponding cover plate 20. Each diaphragm spring 30 is also a substantially annular component formed around the central axis, and is arranged substantially coaxially with the spoke spring cushioning member 10 and the cover plate 20. Each diaphragm spring 30 abuts between the corresponding cover plate 20 and the outer ring portion 13 in a pre-compressed state in the axial direction, so as to press the mutually facing axial side surfaces of the cover plate 20 and the outer ring portion 13 along the axial direction.

[0025] Each diaphragm spring 30 is rotatably in contact with at least one of the cover plate 20 and the outer ring portion 13, i.e., it is in non-fixed contact with the at least one component. Therefore, if the outer ring portion 13 of the spoke spring cushioning member 10 rotates with respect to the center 11 or tends to rotate relative to it, the diaphragm spring 30 may slidably rotate with respect to the non-fixed contact components on the cover plate 20 and the outer ring portion 13 (i.e., frictional contact), thereby generating a frictional force at the corresponding contact surfaces that inhibits rotation and provides additional frictional damping to the shock absorber.

[0026] Preferably, the diaphragm spring 30 is fixedly connected to one of the cover plate 20 and the outer ring portion 13, and can make relative rotatable contact with the other. In particular, the diaphragm spring 30 is preferably fixedly connected to the outer ring portion 13 and can make relative rotatable contact with the cover plate 20. Thus, the diaphragm spring 30 achieves positioning during installation by being fixedly connected to the outer ring portion 13. In this case, the shock absorber may further include one or more second fastening members 60, such as rivets, screws, or bolts, for fixedly connecting the diaphragm spring 30 and the outer ring portion 13. These second fastening members 60 may be spaced apart along the circumferential direction, and may be particularly spaced evenly. Each second fastening member 60 can fix the diaphragm spring 30 and the outer ring portion 13 together by penetrating the diaphragm spring 30 and the outer ring portion 13 along the axial direction. If there are two diaphragm springs 30 located on opposite sides of the outer ring portion 13 in the axial direction, each second fastening member 60 can simultaneously penetrate both diaphragm springs 30 and the outer ring portion 13 along the axial direction. Alternatively, the diaphragm springs 30 may be fixedly connected to the cover plate 20 and in relative rotatable contact with the outer ring portion 13.

[0027] The rotatable contact between the diaphragm spring 30 and the cover plate 20 and / or the outer ring portion 13 may be direct or indirect. Preferably, the shock absorber may include friction gaskets 40. Each friction gasket 40 is also a substantially annular component formed around a central axis and extends in a plane basically perpendicular to the central axis. Each friction gasket 40 is also basically coaxial with the spoke spring buffer member 10, the cover plate 20 and the diaphragm spring 30 and is sandwiched between the corresponding diaphragm spring 30 and the corresponding friction contact surface. For example, as shown in Figure 3, when the diaphragm spring 30 is fixedly connected to the outer ring portion 13 and is in relative rotatable contact with the cover plate 20, each diaphragm spring 30 indirectly contacts the corresponding cover plate 20 via the corresponding friction gasket 40.

[0028] As shown in the enlarged view on the right in Figure 3, the friction gasket 40 may preferably have an L-shaped cross-section in a cross-section passing through the central axis. Specifically, the friction gasket 40 may include an axial section 41 and a radial section 42. The axial section 41 is basically a cylindrical portion extending along the axial direction and abuts against the radially outer side of the cover plate 20. The radial section 42 is basically an annular plate portion extending along the radial direction, extending radially inward from the axial end of the axial section 41 toward the spoke spring buffer member 10, and abuts against the side surface of the cover plate 20 toward the spoke spring buffer member 10. Such a friction gasket 40 can achieve a positioning relationship with respect to the cover plate 20 in a plane perpendicular to the central axis by shape fitting.

[0029] As shown in Figure 3, each cover plate 20 preferably includes a radially outer portion 21 and a radially inner portion 22. Both the radially outer portion 21 and the radially inner portion 22 are annular portions formed around a central axis. The radially outer portion 21 is coaxially located radially outward of the radially inner portion 22. The radially outer portion 21 is offset axially from the radially inner portion 22 such that the radially outer portion 21 is spaced axially from the spoke spring buffer member 10, and the radially inner portion 22 abuts against the center 11 axially. This allows the diaphragm spring 30 to be attached between the radially outer portion 21 and the outer ring portion 13, and the radially inner portion 22 to fixably connect the cover plate 20 and the center 11 of the spoke spring buffer member 10 (at this time, the first fastening member 50 is attached to the radially inner portion 22), and the friction gasket 40 (if present) can be installed on the radially outer edge of the radially outer portion 21.

[0030] Furthermore, each cover plate 20 may further include a transient portion 23 located radially between the radially outer portion 21 and the radially inner portion 22. The radially outer portion 21 and the radially inner portion 22 can each extend in a plane that is basically perpendicular to the central axis, and the transient portion 23 can connect the two offset portions by extending at an angle to the radially outer portion 21 and the radially inner portion 22.

[0031] Preferably, the outer diameter of the radially outer portion 21 may be smaller than the outer diameter of the outer ring portion 13, and the area of ​​the diaphragm spring 30 that contacts the radially outer portion 21 is located radially inward of the area of ​​the diaphragm spring 30 that contacts the outer ring portion 13. This facilitates the installation of the diaphragm spring 30.

[0032] In embodiments of the present invention, the shock absorber may have a cover plate 20 and a corresponding diaphragm spring 30 installed on only one axial side, or a cover plate 20 and a corresponding diaphragm spring 30 installed on both axial sides. However, it is preferable to install two cover plates 20 and two corresponding diaphragm springs 30 on both axial sides of the spoke spring buffer member 10. This is because the two diaphragm springs 30 arranged in this manner can apply elastic forces to both axial sides of the spoke spring buffer member 10 in opposition to each other, relatively balancing the axial force-receiving state of the spoke spring buffer member 10, thereby reducing the risk of the spoke spring buffer member 10 deforming toward one axial side, and in particular preventing the outer ring portion 13 of the spoke spring buffer member 10 from plastically deforming toward one axial side and rendering the pre-compressed state of the diaphragm spring 30 ineffective. For the same reason, the two cover plates 20 may preferably have the same shape and dimensions and be arranged symmetrically with respect to the spoke spring cushioning member 10, and the two diaphragm springs 30 may also preferably have the same shape and dimensions and be arranged symmetrically with respect to the spoke spring cushioning member 10.

[0033] Figure 4 shows an improved embodiment based on the embodiments shown in Figures 1 to 3. The difference between the shock absorber shown in Figure 4 and the shock absorbers shown in Figures 1 to 3 is that the cover plate 20 can include one or more window holes 24. Each window hole 24 penetrates the cover plate 20 axially so that contaminants inside the shock absorber are discharged through the window hole 24 under the action of centrifugal force. The window holes 24 are formed in portions of the cover plate 20 that do not come into contact with the spoke spring buffer member 10, for example, in the transient portion 23. If there are multiple window holes 24, these window holes 24 can preferably be spaced apart along the circumferential direction and especially can be uniformly distributed.

[0034] In the embodiments shown in Figures 1 to 3 or the improved embodiment shown in Figure 4, indirect frictional contact is achieved between the cover plate 20 and the outer ring portion 13 via a diaphragm spring 30, and the pressing force required for the contact surface is provided by the elastic compression of the diaphragm spring 30. Alternatively, the pressing force required to generate frictional force between the cover plate 20 and the outer ring portion 13 may be achieved by other means. In the alternative embodiments shown in Figures 5 and 6, no diaphragm spring 30 is installed between the cover plate 20 and the outer ring portion 13, and since the cover plate 20 is manufactured from an elastic material, the cover plate 20 itself can elastically deform and press its outer edge against the outer ring portion 13. The elastic material used to manufacture such a cover plate 20 should be a material that combines strength and elasticity, and is preferably spring steel.

[0035] Preferably, the cover plate 20 has an arched structure that enhances its elastic deformation capacity, thereby ensuring that sufficient pressing force is generated on the outer edge. Specifically, as shown in Figure 6, the cover plate 20 may include a coaxially arranged radially inner portion 22, an arched portion 25, and an edge portion 26. The radially inner portion 22 has essentially the same structure as the radially inner portion 22 in the embodiments shown in Figures 1 to 3 and is fixed in contact with the central portion 11. The annular edge portion 26, as the outer edge of the cover plate 20, coaxially surrounds the radially outer side of the radially inner portion 22 and is spaced radially away from the radially inner portion 22. The arched portion 25 is also an annular portion around the central axis and is connected between the radially inner portion 22 and the edge portion 26. The edge portion 26 is rotatably in contact with the outer ring portion 13 directly or indirectly (e.g., via a friction gasket). The arched portion 25 is arched in a direction generally away from the spoke spring cushioning member 10 in the axial direction so as not to come into contact with the spoke spring cushioning member 10. When the cover plate 20 is attached together with the spoke spring cushioning member 10, the arched portion 25 elastically deforms away from the spoke spring cushioning member 10, generating an elastic force that presses the edge portion 26 against the outer ring portion 13. The structure of the cover plate 20 in the embodiments shown in Figures 5 and 6 is substantially the same as the structure formed by integrating the cover plate and diaphragm spring in the embodiments shown in Figures 1 to 3. Therefore, apart from the differences clearly explained above, the other structural features of the two embodiments are basically the same and will not be explained here.

[0036] The shock absorber according to the present invention can provide additional damping to the spoke spring buffer member by means of a cover plate. At the same time, the cover plate can reduce the risk of axial deformation of the spoke spring buffer member by constraining the axial position of the outer ring portion of the spoke spring buffer member. Such a shock absorber has a simple structure, is easy to manufacture and install, and thus can effectively reduce production costs and save installation space. Furthermore, even after the finished shock absorber has been shipped, the frictional force can be easily adjusted by changing the elastic force or assembly height of the diaphragm spring, thereby obtaining an appropriate damping effect.

[0037] While the above description illustrates possible embodiments, it should be understood that numerous variations of the embodiments still exist, based on all known and easily conceivable technical features and combinations of embodiments. Furthermore, it should be understood that the exemplary embodiments are merely examples and do not limit in any way the scope, uses, and configuration of the present invention. The foregoing description provides technical guidance for modifying at least one exemplary embodiment, and various modifications, particularly those relating to the function and structure of the described components, can be made as long as they do not deviate from the scope of the claims. [Explanation of Symbols]

[0038] 10 Spoke spring cushioning member 11 Center 12-spoke spring 13 Outer ring 20 Cover Plates 21 Radial outer part 22 Radial inner part 23 Transient part 24 Window holes 25 Arch-shaped section 26 Edge 30 diaphragm springs 40 Friction Gasket 41 Axial Section 42 Radial section 50 First fastening member 60 Second fastening member

Claims

1. The spoke spring buffer member (10) includes a central part (11), a plurality of spoke springs (12), and an outer ring portion (13), wherein the outer ring portion (13) coaxially surrounds the radially outer side of the central part (11), the plurality of spoke springs (12) are each connected radially between the outer ring portion (13) and the central part (11) and distributed at intervals along the circumferential direction, and the plurality of spoke springs (12) are elastically deformable to allow the outer ring portion (13) to rotate relative to the central part (11). It is a shock absorber, The shock absorber further includes a cover plate (20), the cover plate (20) being fixed to the axial side of the central part (11), and being rotatable relative to the outer ring portion (13) so that the cover plate (20) can directly or indirectly contact the outer ring portion (13) so that the outer ring portion (13) can directly or indirectly frictionally contact the outer ring portion (13) when the outer ring portion (13) rotates relative to the central part (11).

2. The shock absorber according to claim 1, further comprising a diaphragm spring (30), wherein the diaphragm spring (30) abuts between the cover plate (20) and the outer ring portion (13), and abuts relative to at least one of the cover plate (20) and the outer ring portion (13) in a rotatable manner.

3. The shock absorber according to claim 2, characterized in that the diaphragm spring (30) is fixedly connected to one of the cover plate (20) and the outer ring portion (13), and is in contact with the other so as to be rotatable relative to it.

4. The shock absorber according to claim 3, characterized in that the diaphragm spring (30) is fixedly connected to the outer ring portion (13) and is in relative rotational contact with the cover plate (20).

5. The shock absorber according to claim 4, further comprising a friction gasket (40), wherein the diaphragm spring (30) is indirectly in contact with the cover plate (20) via the friction gasket (40).

6. The shock absorber according to claim 5, wherein the friction gasket (40) includes an axial section (41) and a radial section (42), the axial section (41) abuts against the radially outer side of the cover plate (20), and the radial section (42) extends radially inward from the axial end of the axial section (41) and abuts against the side of the cover plate (20) facing the spoke spring buffer member (10).

7. The shock absorber further includes one or more first fastening members (50), each first fastening member (50) fastening the cover plate (20) and the center (11) together by penetrating the cover plate (20) and the center (11) along the axial direction, and / or The shock absorber according to claim 4, further comprising one or more second fastening members (60), each second fastening member (60) passing through the diaphragm spring (30) and the outer ring portion (13) in an axial direction, thereby fixing the diaphragm spring (30) and the outer ring portion (13) together.

8. The shock absorber according to claim 1, characterized in that the cover plate (20) is manufactured from an elastic material such that the cover plate (20) presses its outer edge against the outer ring portion (13) due to elastic deformation.

9. The shock absorber according to claim 8, wherein the cover plate (20) includes a radially inner portion (22), an arched portion (25), and an edge portion (26), the radially inner portion (22) being fixed to the central portion (11), the edge portion (26) coaxially surrounding the radially outer side of the radially inner portion (22), and the arched portion (25) being connected between the radially inner portion (22) and the edge portion (26), and being arched away from the spoke spring buffer member (10) so that the edge portion (26) is pressed against the outer ring portion (13).

10. The shock absorber according to claim 1, characterized in that the cover plate (20) includes one or more through-windows (24) for discharging contaminants.

11. The shock absorber according to any one of claims 1 to 10, wherein the shock absorber includes two cover plates (20), each of which is located on both axial sides of the spoke spring buffer member (10) and is in direct or indirect contact with the outer ring portion (13) so as to be rotatable relative to the other.

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