Oscillating damping device, dual mass flywheel and motor vehicle
By using elastic sheets in the swing type vibration damping device to generate friction between the swing block and the support plate, the problem of collision noise between the swing block and the support member is solved, and the noise reduction effect is achieved.
Patent Information
- Application Number
- CN202310682295.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-09
- Publication Date
- 2024-12-10
AI Technical Summary
The conventional swing vibration damping device generates noise due to the collision between the swing block and the support during idle speed, which is difficult to effectively reduce.
An elastic piece is arranged between the swing block and the support disc, and friction is generated by axial compression of the elastic piece, reducing the relative speed and collision force between the swing block and the support member, and reducing noise.
Through the frictional force of the elastic sheet, the collision force between the swing block and the support is effectively reduced, idle noise is reduced, and the driving comfort of motor vehicles is improved.
Smart Images
Figure CN119103311A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to a oscillating vibration damping device, a dual-mass flywheel comprising the oscillating vibration damping device and a motor vehicle comprising the dual-mass flywheel. Background Art
[0002] The torque generated by a motor vehicle engine is usually not constant. This inconstant torque can be transmitted to the transmission gearbox, causing vibrations in the transmission gearbox and thus particularly undesirable noises or knocks, etc. In order to reduce the adverse effects of vibrations and improve the driving comfort of motor vehicles, it is known to equip the torque transmission device of the motor vehicle drive train with a torsional vibration damping device. The torsional vibration damping device can make it possible to absorb and dampen the vibrations generated by the motor vehicle engine.
[0003] A known torsional vibration damping device is a swing type vibration damping device, which has a support member that can pivot about a rotation axis and a swing block mounted on the support member. When the rotation speed generated by the engine changes, the swing block can swing relative to the support member about the rotation axis within a certain range, thereby absorbing and reducing the vibration generated by the automobile engine through the inertia of the swing block.
[0004] During the driving process of the motor vehicle, the swing damper rotates at high speed, and the swing block is located radially outward relative to the support member under the action of centrifugal force. When the motor vehicle is idling, the speed of the swing damper decreases, the centrifugal force decreases, and it cannot counteract the gravity of the swing block. As the swing damper rotates, the swing block moves back and forth radially relative to the support member under the action of gravity and collides with the support member. The noise generated by this collision makes it difficult to reduce the idling noise of the motor vehicle. Summary of the invention
[0005] Therefore, the present disclosure aims to solve the above-mentioned problems existing in conventional swing-type vibration damping devices, and its purpose is to provide a swing-type vibration damping device, wherein the collision force between the swing block of the swing-type vibration damping device and the support member is reduced, thereby reducing the noise generated by the collision.
[0006] The objective is achieved by a swing type vibration reduction device according to an embodiment of the present disclosure. The swing type vibration reduction device comprises: a support plate capable of rotating around an axis; at least one swing block arranged on one axial side of the support plate and movable relative to the support plate; and an elastic sheet axially arranged between the swing block and the support plate. The swing block and the support plate axially squeeze the elastic sheet, so that the elastic sheet is axially compressed.
[0007] One of the purposes of the present disclosure is to provide a swing-type vibration reduction device, which can reduce the collision force between the swing block and the support member and reduce the noise generated by such collision. The swing-type vibration reduction device according to the present disclosure includes an elastic sheet arranged between the swing block and the support disk and subjected to axial compression by the two. The axially compressed elastic sheet generates an elastic force acting on the swing block and the support disk to resist such compression. This elastic force in turn generates a friction force that resists the relative movement between the swing block and the support disk. Through the action of the friction force, the relative speed of the swing block and the support disk when colliding is reduced, the collision force becomes smaller, and the effect of reducing noise is achieved.
[0008] The swing type vibration reduction device according to the present disclosure may also have one or more of the following features alone or in combination.
[0009] According to an optional embodiment of the present disclosure, the elastic sheet includes at least one protrusion, and when the elastic sheet is not compressed, the height of the protrusion is greater than the axial distance between the swing block and the support plate. In other words, the axial compression of the elastic sheet refers to the axial compression of the protrusion.
[0010] According to an optional embodiment of the present disclosure, the elastic sheet is a corrugated sheet having at least one peak and at least one valley, and when the elastic sheet is not compressed, the height difference between the peak and the valley is greater than the axial distance between the swing block and the support plate. In other words, the axial compression of the elastic sheet refers to the axial compression of the peaks and valleys of the corrugated sheet.
[0011] According to an optional embodiment of the present disclosure, the elastic sheet includes a first coupling portion, the swing block includes a second coupling portion, and the first coupling portion and the second coupling portion cooperate with each other so that the elastic sheet is coupled to the swing block. Preferably, the elastic sheet is fixedly coupled to the swing block and is held by the swing block so as to move together with the swing block. The friction force generated by the elastic force of the elastic sheet acts between the elastic sheet and the support plate.
[0012] According to an optional embodiment of the present disclosure, the first connecting portion is a connecting buckle, and the second connecting portion is a connecting hole matched with the connecting buckle.
[0013] According to an optional embodiment of the present disclosure, the swing type vibration reduction device includes two swing blocks respectively arranged on axially opposite sides of the support plate and connected together, and includes two elastic sheets respectively arranged axially between the two swing blocks and the support plate.
[0014] According to an optional embodiment of the present disclosure, the swing type vibration reduction device includes two swing blocks respectively arranged on axially opposite sides of the support plate and connected together, and includes two elastic sheets respectively arranged axially between the two swing blocks and the support plate. Optionally, the two swing blocks and the two elastic sheets are symmetrical about the support plate.
[0015] According to an optional embodiment of the present disclosure, the swing vibration damping device further comprises a partition arranged between the two swing blocks. The partition can maintain a certain axial distance between the two swing blocks of the swing vibration damping device to avoid excessive compression of the elastic sheet.
[0016] According to an optional embodiment of the present disclosure, the swing type vibration reduction device further includes at least one rolling member, the rolling member being clamped between a first rolling track defined by the support disk and a second rolling track defined by the partition. The rolling member can roll between the first rolling track and the second rolling track to reduce the friction force when the swing block swings relative to the support disk.
[0017] According to an optional embodiment of the present disclosure, the support plate includes at least one hollow portion, the partition is arranged in the hollow portion, and the first rolling track is defined by the top surface of the hollow portion. When the swing-type vibration reduction device rotates at a high speed, the partition pushes the rolling member against the first rolling track, thereby constraining the radial position of the partition and the swing block.
[0018] According to an optional embodiment of the present disclosure, the swing-type vibration damping device further includes a buffer pad, which is connected to the partition and arranged between the partition and the bottom surface of the hollow portion. When the motor vehicle is idling, the rotation speed of the swing-type vibration damping device decreases, and the swing block drives the partition to fall toward the bottom surface of the hollow portion. The buffer pad arranged as above can avoid direct collision between the partition and the bottom surface of the hollow portion, further reducing the idling noise of the motor vehicle.
[0019] According to an optional embodiment of the present disclosure, the swing block has a separation boss protruding from the side surface thereof axially facing the support disk.
[0020] According to an optional embodiment of the present disclosure, the swing block further has a recessed portion axially opposite to the separation boss.
[0021] According to an optional embodiment of the present disclosure, the two swing blocks of the swing vibration damping device are connected together by rivets, and the partition is provided with a through hole for the rivet to pass through. In other words, the two swing blocks and the partition of the swing vibration damping device are connected together and can swing relative to the support plate as a whole.
[0022] According to an optional embodiment of the present disclosure, the elastic sheet is an integrally formed unitary piece.
[0023] According to an optional embodiment of the present disclosure, the elastic sheet is made of nylon or glass fiber.
[0024] The present disclosure also provides a dual-mass flywheel, which includes the oscillating vibration reduction device as described above.
[0025] The present disclosure also provides a motor vehicle comprising the oscillating vibration damping device and / or the dual mass flywheel as described above. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The above and other features and advantages of the present disclosure will become more apparent through the following detailed description of exemplary embodiments in conjunction with the accompanying drawings, and the description and drawings are only for illustrative purposes and are not intended to limit the scope of the present disclosure in any way. The following drawings are not deliberately drawn to scale with actual size, and the focus is on illustrating the subject matter of the present disclosure.
[0027] Figure 1 is a perspective view of a swing type vibration reduction device according to one embodiment of the present disclosure.
[0028] Figure 2 yes Figure 1 An exploded view of the pendulum-type vibration damping device is shown.
[0029] Figure 3 A perspective view of the elastic sheet is shown.
[0030] Figure 4 A side view of the elastic sheet is shown. DETAILED DESCRIPTION
[0031] In order to make the objectives, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure.
[0032] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by ordinary technicians in the field to which the present disclosure belongs. Similar words such as "one", "an" or "the" used in the patent application specification and claims of the present disclosure do not indicate a quantitative limitation, but indicate the existence of at least one. Similar words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents. Similar words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Directions such as "axial", "radial" and "circumferential" are defined relative to the axis of rotation of the swing-type vibration damping device. The axial direction is the direction in which the axis of rotation RO extends, the radial direction is the direction perpendicular to the axis of rotation RO, and the circumferential direction is the circumferential direction around the axis of rotation RO.
[0033] Figure 1 to Figure 2 FIG. 1 shows a swing type vibration reduction device 100 according to an embodiment of the present disclosure. Figure 1 and 2 As shown, the swing type vibration reduction device 100 includes a support plate 1 that can rotate around a rotation axis RO, two swing blocks 2 arranged on axially opposite sides of the support plate 1, an elastic sheet 3 axially arranged between the swing block 2 and the support plate 1, a partition 4 arranged between the two swing blocks 2, a rolling member 5 and a buffer pad 6. The two swing blocks 2 and the partition 4 constitute a swing assembly that is movable relative to the support plate 1 in an integral manner. In this embodiment, the swing type vibration reduction device 100 includes four swing assemblies (two are shown in the figure) uniformly distributed along the circumferential direction on the support plate 1. It can be understood that the number of swing assemblies can be varied.
[0034] The two swing blocks 2 are connected together by a rivet 7, which passes through a through hole 42 provided on the partition 4. A hollow portion 11 is provided on the support disk 1. The partition 4 is embedded in the hollow portion 11. The rolling member 5 is also arranged in the hollow portion 11. The rolling member 5 is formed by a cylindrical roller with a circular cross-section. The top surface of the hollow portion 11 (i.e., the surface defining the hollow portion 11 on the radial outside) defines a first rolling track 12, and the partition 4 defines a second rolling track 41. The rolling member 5 is clamped between the first rolling track 12 and the second rolling track 41. When the swing assembly swings on the support 1, the rolling member 3 rolls on the first rolling track 12 and the second rolling track 41.
[0035] like Figure 2As shown, each swing assembly of the swing type vibration reduction device 100 corresponds to two rolling members 3. Accordingly, the top surface of the hollow portion 11 defines two first rolling tracks 12, and the partition 4 defines two second rolling tracks 41. The two first rolling tracks 12 are symmetrical about the axial center plane of the hollow portion, and the two second rolling tracks 41 are symmetrical about the axial center plane of the partition 4. It should be understood that the number of rolling members 5 corresponding to each swing assembly can also be varied.
[0036] Further references Figure 2 The swing block 2 has a partition boss 22 protruding from the side facing the support plate 1 in the axial direction, and a recess 23 axially opposite to the partition boss 22. The partition boss 22 and the recess 23 can be formed on the swing block 2 at one time by stamping. The position of the partition boss 22 corresponds to the partition member 4, and the through hole for passing the rivet 7 on the swing block 2 is provided on the partition boss 22. The above-mentioned through hole of the swing block 2 corresponds to the through hole 42 of the partition member 4. Figure 1 As shown, the recess 23 forms a receiving portion for receiving the rivet head and the riveted deformation portion of the rivet 7, so that the rivet 7 does not extend beyond the swing block 2 in the axial direction. Figure 2 In the illustrated embodiment, three partition bosses 22 are provided on the swing block 2, wherein the partition boss 22 located in the middle is provided with two through holes for the rivet 7 to pass through, and the two partition bosses 22 located on both sides are symmetrical about the axial center plane of the swing block 2 and each is provided with a through hole for the rivet 7 to pass through. It is understandable that the number and position of the partition bosses 22 may have a configuration different from that of the illustrated embodiment. In addition, the partition bosses and recesses may not be formed, and a through hole for passing the rivet 7 may be directly formed on the body of the swing block 2.
[0037] The swing type vibration reduction device 100 further includes an elastic sheet 3 arranged between the swing block 2 and the support plate 1 in the axial direction. Figure 3 and Figure 4 , the elastic sheet 3 has an undulating profile in the thickness direction. In the assembly structure of the swing type vibration reduction device 100, the axial distance between the swing block 2 and the support plate 1 is smaller than the height difference between the higher part and the lower part of the elastic sheet 3 in the thickness direction, resulting in the swing block 2 and the support plate 1 axially squeezing the elastic sheet 3, so that the elastic sheet 3 is axially compressed. The axial distance between the swing block 2 and the support plate 1 is defined, for example, by the partition 4 and the partition boss 22. The elastic force of the elastic sheet 3 to restore its initial shape acts on the swing block 2 and the support plate 1. When the swing block 2 and the support plate 1 move relative to each other, the elastic force will generate a friction force that blocks the relative movement.
[0038] When the motor vehicle is running, the engine drives the swing type vibration reduction device 100 to rotate at a high speed, the swing block 2 and the partition 4 are biased radially outward under the action of centrifugal force, and the partition 4 pushes the rolling member 5 onto the first rolling track 12 on the top surface of the hollow portion 11. The swing of the swing block 2 and the partition 4 in the circumferential direction relative to the support plate 1 around the rotation axis RO will absorb the fluctuation in the torque generated by the engine, and play a torsional vibration reduction role.
[0039] When the motor vehicle is idling, when the engine is started and stopped, the rotation speed of the swing-type vibration reduction device 100 is low, and the centrifugal force of the swing block 2 and the partition 4 may be less than the gravity. Therefore, the swing block 2 and the partition 4 may fall radially inward toward the center of the support disk 1 under the action of gravity, and may collide with the support disk 1, generating noise. In particular, the partition 4 collides with the bottom surface of the hollow portion 11 (i.e., the surface that defines the hollow portion 11 radially inward). In this case, the friction force generated by the elastic sheet 3 decelerates the movement of the swing block 2 and the partition 4 in the radial direction, reduces the radial speed of the two when they collide with the support disk 1, thereby reducing the collision force and eliminating noise.
[0040] exist Figure 3 and Figure 4 In the illustrated embodiment, the ups and downs of the elastic sheet 3 in the thickness direction are defined by the protrusions 31. The elastic sheet 3 may include a plurality of protrusions 31 spaced apart along its length, the height of the protrusions 31 being greater than the axial distance between the swing block 2 and the support disk 1, so that it is squeezed in the assembly structure. In an unillustrated embodiment of the swing type vibration reduction device 100, the elastic sheet 3 may be a corrugated sheet having a series of peaks and valleys. The ups and downs of the elastic sheet 3 in the thickness direction are defined by the peaks and valleys of the corrugated sheet. Similarly, the height difference between the peaks and valleys is greater than the axial distance between the swing block 2 and the support disk 1, so that it is squeezed in the assembly structure.
[0041] The elastic sheet 3 can be connected to the swing block 2 so as to move relative to the support plate 1 together with the swing block 2. Figure 2 and 3As shown, the elastic sheet 3 includes a first connection portion 32 in the form of a connection buckle, and the swing block 2 includes a second connection portion 21 in the form of a connection hole. By inserting through the connection hole, the connection buckle is connected to the connection hole, so that the first connection portion 32 and the second connection portion 21 cooperate with each other to connect the elastic sheet 3 to the swing block 2. Although not shown in the drawings, other connection methods of the elastic sheet 3 and the swing block 2, such as bonding, welding, threaded connection, etc., are also conceivable. The radial inner profile of the elastic sheet 3 is designed to avoid the partition boss 22 and the hollow portion 11. Advantageously, the elastic sheet 3 (including the first connection portion 32) is an integrally formed integral part and can be made of an elastic material such as nylon or glass fiber. The elastic coefficient of the elastic sheet 3 is set to reduce the force of the swing block 2 and the partition 4 colliding with the support plate 1 in the radial direction, and will not adversely affect the swing type vibration reduction device 100 through the swing of the swing block 2 and the partition 4 to play a large torsional vibration reduction role.
[0042] In addition, in order to further reduce the noise generated when the partition 4 collides with the bottom surface of the hollow portion 11 of the support plate 1, the swing type vibration reduction device 100 further includes a buffer pad 6, which is connected to the partition 4 and arranged between the partition 4 and the bottom surface of the hollow portion 11. The buffer pad 6 moves together with the partition 4. When the partition 4 falls radially inward, the buffer pad 6 first contacts the bottom surface of the hollow portion 11, thereby avoiding direct collision between the partition 4 and the support plate 1 and reducing noise.
[0043] The above describes a swing type vibration reduction device 100 according to a preferred embodiment of the present disclosure in conjunction with the accompanying drawings. Although not shown in the accompanying drawings, those skilled in the art can imagine that a swing block 2 that can swing circumferentially and move radially relative to the support disk 1 can also be provided only on one axial side of the support disk 1, and the elastic sheet 3 is arranged between the swing block 2 and the support disk 1 on the axial side.
[0044] According to another aspect of the present disclosure, a dual-mass flywheel is provided, which includes the oscillating vibration damping device 100 as described above.
[0045] According to yet another aspect of the present disclosure, a motor vehicle is provided, which comprises the oscillating vibration damping device 100 and / or the dual mass flywheel as described above.
[0046] Certain features, structures or characteristics in one or more embodiments of the present disclosure may be appropriately combined.
[0047] The above is an explanation of the present disclosure and should not be considered as a limitation thereof. Although several exemplary embodiments of the present disclosure are described, it will be readily appreciated by those skilled in the art that many modifications may be made to the exemplary embodiments without departing from the novel teachings and advantages of the present disclosure. Therefore, all such modifications are intended to be included within the scope of the present disclosure as defined in the claims. It should be understood that the above is an explanation of the present disclosure and the present disclosure should not be considered to be limited to the specific embodiments disclosed, and modifications to the disclosed embodiments and other embodiments are intended to be included within the scope of the present disclosure.
Claims
1. A swing type vibration reduction device (100), characterized in that: The swing type vibration reduction device (100) comprises: A support plate (1) rotatable about an axis (RO); at least one swing block (2) arranged on one axial side of the support plate (1) and movable relative to the support plate (1); and an elastic sheet (3), wherein the elastic sheet (3) is axially arranged between the swing block (2) and the support plate (1), The swing block (2) and the support plate (1) axially press the elastic sheet (3), so that the elastic sheet (3) is axially compressed.
2. The oscillating vibration damping device (100) according to claim 1, characterized in that: The elastic sheet (3) comprises at least one protrusion (31); when the elastic sheet (3) is not squeezed, the height of the protrusion (31) is greater than the axial distance between the swing block (2) and the support plate (1).
3. The oscillating vibration damping device (100) according to claim 1, characterized in that: The elastic sheet (3) is a corrugated sheet having at least one peak and at least one valley. When the elastic sheet (3) is not squeezed, the height difference between the peak and the valley is greater than the axial distance between the swing block (2) and the support plate (1).
4. The oscillating vibration damping device (100) according to any one of claims 1 to 3, characterized in that: The elastic sheet (3) comprises a first connecting portion (32), and the swing block (2) comprises a second connecting portion (21), wherein the first connecting portion (32) and the second connecting portion (21) cooperate with each other so that the elastic sheet (3) is connected to the swing block (2).
5. The oscillating vibration damping device (100) according to claim 4, characterized in that: The first connecting portion (32) is a connecting buckle, and the second connecting portion (21) is a connecting hole matched with the connecting buckle.
6. The oscillating vibration damping device (100) according to any one of claims 1 to 3, characterized in that: The swing type vibration reduction device (100) comprises two swing blocks (2) respectively arranged on axially opposite sides of the support plate (1) and connected together, and comprises two elastic sheets (3) respectively arranged axially between the two swing blocks (2) and the support plate (1).
7. The oscillating vibration damping device (100) according to claim 6, characterized in that: The swing type vibration reduction device (100) further comprises a partition (4) arranged between the two swing blocks (2).
8. The oscillating vibration damping device (100) according to claim 7, characterized in that: The swing type vibration reduction device (100) further comprises at least one rolling member (5), wherein the rolling member (5) is clamped between a first rolling track (12) defined by the support plate (1) and a second rolling track (41) defined by the partition (4).
9. The oscillating vibration damping device (100) according to claim 8, characterized in that: The support plate (1) comprises at least one hollow portion (11), the partition (4) is arranged in the hollow portion (11), and the first rolling track (12) is defined by the top surface of the hollow portion (11).
10. The oscillating vibration damping device (100) according to claim 9, characterized in that: The swing type vibration reduction device (100) further includes a buffer pad (6) which is coupled to the partition (4) and arranged between the partition (4) and the bottom surface of the hollow portion (11).
11. The oscillating vibration damping device (100) according to claim 6, characterized in that: The swing block (2) has a partition boss (22) protruding from the side surface thereof which faces the support plate (1) axially.
12. The oscillating vibration damping device (100) according to claim 11, characterized in that: The swing block (2) also has a recess (23) axially opposite to the separation boss (22).
13. The oscillating vibration damping device (100) according to claim 7, characterized in that: The two swing blocks (2) are connected together by a rivet (7), and the partition (4) is provided with a through hole (42) for the rivet (7) to pass through.
14. The oscillating vibration damping device (100) according to any one of claims 1 to 3, characterized in that: The elastic sheet (3) is an integrally formed whole piece.
15. The oscillating vibration damping device (100) according to any one of claims 1 to 3, characterized in that: The elastic sheet (3) is made of nylon or glass fiber.
16. A dual mass flywheel, characterized in that: The dual mass flywheel comprises an oscillating vibration damping device (100) according to any one of claims 1 to 15.
17. A motor vehicle, characterized in that: The motor vehicle comprises a pendulum vibration damping device (100) according to any one of claims 1 to 15 and / or a dual mass flywheel according to claim 16.