Damper device

Abstract

The utility model relates to a damping device. The vibration damping device comprises a first rotating part and a second rotating part which can rotate relatively and are coaxially arranged, and a vibration damping spring which abuts between the first rotating part and the second rotating part in the rotating direction, and the first rotating part and the second rotating part can transmit torque through the vibration damping spring. The damping device also includes a clutch with which the second rotating member is connected so that torque can be input and output via the clutch. The damping device provided by the utility model has an improved structure.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to a vibration reduction device for a power system of a motor vehicle. Background Art

[0002] In the transmission path of the power system of a motor vehicle, there are usually mechanisms such as an engine, a vibration damping device, a clutch and a transmission. The vibration damping device is usually directly connected to the output shaft of the engine to buffer the torque vibration output by the engine. There may be multiple different clutches arranged in the transmission path to control the transmission path to be connected or disconnected as needed, thereby achieving different driving states. For example, there is usually a clutch arranged between the output shaft of the engine and the transmission, which is called a C0 clutch.

[0003] In conventional power system layout, the vibration damping device and the C0 clutch are usually two independently arranged devices, which requires a larger layout space and more components for the power system, and increases installation time and cost. Utility Model Content

[0004] Therefore, the technical problem to be solved by the present invention is to provide a vibration reduction device integrated with a clutch.

[0005] The above technical problems are solved by a vibration damping device according to the utility model. The vibration damping device includes a first rotating component and a second rotating component that are coaxially arranged and relatively rotatable, and a vibration damping spring that abuts between the first rotating component and the second rotating component in the rotation direction, and the first rotating component and the second rotating component can transmit torque via the vibration damping spring. The vibration damping device also includes a clutch, and the second rotating component is connected to the clutch, so that torque can be input and output via the clutch. By directly connecting the clutch to the second rotating component, the clutch is integrated into the vibration damping device. Thereby, the compactness of the layout of the power system is improved, and the number of components and the installation cost are reduced.

[0006] According to a preferred embodiment of the utility model, the second rotating component can be located between the first rotating component and the clutch in the axial direction. The first rotating component can be used to connect the engine output shaft, and the second rotating component can be used to connect the transmission, and the clutch is thus located on a side close to the transmission.

[0007] According to another preferred embodiment of the present invention, the clutch may include a clutch flange plate fixed to an axial side of the second rotating component facing away from the first rotating component. The clutch flange plate may transmit torque from the second rotating component to the clutch.

[0008] According to another preferred embodiment of the utility model, the clutch may further include a first friction plate and a second friction plate configured to be capable of frictionally contacting or separating with each other, and the first friction plate is torsionally connected to the clutch flange plate, thereby forming a friction clutch with a simple structure.

[0009] According to another preferred embodiment of the utility model, the clutch may further include an electromagnetic actuator mounted on the clutch flange plate, the electromagnetic actuator being configured to push the first friction disc and the second friction disc to move axially relative to each other, thereby frictionally contacting or separating each other. The axially movable torsion-resistant connection may be realized, for example, by a spline.

[0010] According to another preferred embodiment of the utility model, the clutch may also include an outer hub, rolling elements, a retaining frame and an elastic biasing member, the clutch flange plate and the outer hub are coaxially arranged for relative rotation, the clutch flange plate includes a guide profile formed on the radial outer surface, the rolling elements are radially arranged between the guide profile and the outer hub, the circumferential motion range of the rolling elements relative to the clutch flange plate is limited by the guide profile between a first limit position and a second limit position, the first rotation direction points from the first limit position to the second limit position, the rolling elements abut between the guide profile and the outer hub when located at the first limit position, thereby being able to transmit torque from the clutch flange plate rotating along the first rotation direction to the outer hub, and the rolling elements abut between the guide profile and the outer hub when located at the second limit position, thereby being able to transmit torque from the clutch flange plate rotating along the first rotation direction to the outer hub. The rotating outer hub transmits torque to the clutch flange plate. When the rolling body is located at other positions between the first limit position and the second limit position, it cannot simultaneously abut the clutch flange plate and the outer hub to transmit torque. The retainer maintains the circumferential position of the rolling body relative to the clutch flange plate. The elastic biasing member abuts between the clutch flange plate and the retainer and biases the retainer relative to the clutch flange plate in a circumferential direction opposite to the first rotation direction. The retainer can selectively engage or separate with the outer hub in a torsion-resistant manner. When the retainer is separated from the outer hub, the retainer keeps the rolling body away from the second limit position under the biasing force of the elastic biasing member. When the retainer is engaged with the outer hub in a torsion-resistant manner, the outer hub rotating in the first rotation direction can drive the retainer to overcome the biasing force of the elastic biasing member to allow the rolling body to reach the second limit position. The clutch can thus realize the switching between the one-way torque transmission state and the two-way torque transmission state.

[0011] According to another preferred embodiment of the utility model, the clutch may further include a connecting sleeve, the retaining frame is connected to the connecting sleeve in a torsion-proof manner, and the connecting sleeve can be axially movable relative to the outer hub so as to selectively engage or disengage with the outer hub in a frictional manner. The retaining frame can thus selectively engage or disengage with the outer hub in a torsion-proof manner through the connecting sleeve.

[0012] According to another preferred embodiment of the utility model, the connecting sleeve may include a tapered inner surface area, and the outer hub may include a tapered outer surface area, the tapered inner surface area is located radially outside the tapered outer surface area, and the tapered inner surface area and the tapered outer surface area can be selectively frictionally engaged or separated by axial movement of the connecting sleeve. The connecting sleeve and the outer hub can thus achieve a torsion-resistant connection by friction.

[0013] According to another preferred embodiment of the utility model, the clutch may further include an electromagnetic actuator, which is configured to push the connecting sleeve to move axially relative to the clutch flange plate, thereby frictionally contacting or separating with the outer hub. The electromagnetic actuator can thus control the clutch to switch between a one-way torque transmission state and a two-way torque transmission state.

[0014] According to another preferred embodiment of the utility model, the vibration reduction device may further include a support plate fixed to the first rotating component, and the second rotating component is rotatably supported on the support plate in the radial direction through a bearing. The support plate thus defines the radial relative position between the two rotating components. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below in conjunction with the accompanying drawings. The same reference numerals in the drawings represent components with the same functions. Among them:

[0016] Figure 1 shows a vibration reduction device according to an exemplary embodiment of the present invention; and

[0017] Figure 2 A vibration damping device according to another exemplary embodiment of the present invention is shown. DETAILED DESCRIPTION

[0018] The following will describe the specific implementation of the vibration reduction device according to the utility model in conjunction with the accompanying drawings. The following detailed description and drawings are used to exemplarily illustrate the principle of the utility model. The utility model is not limited to the preferred embodiments described, and the protection scope of the utility model is defined by the claims.

[0019] According to an embodiment of the utility model, a vibration reduction device for a motor vehicle is provided, which is used to be arranged in a powertrain of the motor vehicle so as to realize different operation modes of the powertrain.

[0020] Figure 1 An exemplary embodiment according to the present utility model is shown. Figure 1As shown, the vibration damping device mainly includes a first rotating component 1, a second rotating component 2, a vibration damping spring 3 and a clutch. The first rotating component 1 and the second rotating component 2 are respectively formed as roughly disc-shaped components around the central axis, and the two are coaxially arranged and distributed in the axial direction so as to be relatively rotatable. The vibration damping device may include one or more vibration damping springs 3. When there are multiple vibration damping springs 3, these vibration damping springs 3 may be distributed at intervals in the circumferential direction, especially evenly distributed. Each vibration damping spring 3 abuts between the first rotating component 1 and the second rotating component 2 in the rotation direction. When torque is input into the vibration damping device, the first rotating component 1 and the second rotating component 2 can transmit torque to each other via the vibration damping spring 3. The vibration damping spring 3 is elastically compressed when transmitting torque, thereby buffering torque vibration. The first rotating component 1 and the second rotating component 2 can be connected in series in the torque transmission path as two relative torque transmission ends of the vibration damping device. The first rotating component 1 can be, for example, a flywheel with a large moment of inertia, so that torque vibration can be buffered by its own rotational inertia. The second rotating component 2 is connected to the clutch, so that torque can be input and output via the clutch.

[0021] like Figure 1 As shown, the second rotating component 2 may be located between the first rotating component 1 and the clutch in the axial direction. Specifically, the clutch may include a clutch flange plate 6, which is fixed to the axial side of the second rotating component 2 facing away from the first rotating component 1. The clutch flange plate 6 rotates synchronously with the second rotating component, thereby inputting the torque from the second rotating component 2 into the clutch.

[0022] The vibration reduction device may further include a support plate 5 fixed to the first rotating component 1, and the second rotating component 2 may be rotatably supported radially on the radial outer side of the support plate 5 by a bearing. The vibration reduction device may also include a diaphragm spring, wherein the friction plate spring abuts axially between the first rotating component 1 and the second rotating component 2 and is in frictional contact with at least one of the two, thereby providing friction damping.

[0023] exist Figure 1In the illustrated embodiment, the clutch is formed as a friction damper. Specifically, the clutch may further include one or more first friction discs 7 and corresponding one or more second friction discs 8. Each first friction disc 7 is torsionally connected to the clutch flange plate 6, and each second friction disc 8 is torsionally connected to a transmission component located outside the damping device as another torque transmission end of the clutch, for example, torsionally connected to the transmission input shaft 4. Each first friction disc 7 and the corresponding second friction disc 8 are arranged axially opposite to each other. Each first friction disc 7 and the corresponding second friction disc 8 can be frictionally contacted or separated from each other by axial movement, so that the clutch can be switched between an engaged state and a disengaged state. Specifically, each first friction disc 7 can be torsionally connected to the clutch flange plate 6 in an axially movable manner (for example, by a spline), and each second friction disc 8 can also be torsionally connected to the transmission input shaft 4 in an axially movable manner (for example, by a spline). Preferably, the clutch may further include an electromagnetic actuator 9 mounted on the clutch flange plate 6, and the electromagnetic actuator 9 can push the first friction disc 7 and the second friction disc 8 to move axially relative to each other, so as to frictionally contact or separate from each other.

[0024] Figure 2 Another exemplary embodiment of a vibration reduction device according to the present invention is shown. Figure 2 The vibration reduction device shown is Figure 1 The damping devices shown differ in the design of the clutch. Figure 2 The clutch is in the form of a switchable one-way clutch.

[0025] Specifically, in addition to Figure 1The clutch flange plate 6 is basically the same, and the clutch also includes an outer hub 10, rolling elements 11, a retaining frame 12 and an elastic biasing member 13. The clutch flange plate 6 and the outer hub 10 are coaxially arranged so as to be relatively rotatable. The clutch flange plate 6 includes a guide profile formed on the radial outer side, and one or more rolling elements 11 are radially arranged between the guide profile and the outer hub 10. The guide profile is, for example, an arc-shaped concave surface that is concave toward the radial inner side. The circumferential motion range of each rolling element 11 relative to the clutch flange plate 6 is limited by the guide profile between the first limit position and the second limit position. A rotation direction pointing from the first limit position to the second limit position is referred to as the first rotation direction, and the opposite circumferential direction is referred to as the second rotation direction. When each rolling element 11 is located at the first extreme position, it abuts between the corresponding guide profile and the outer hub 10, so that torque can be transmitted from the clutch flange plate 6 rotating in the first rotation direction to the outer hub 10, and correspondingly, torque can also be transmitted from the outer hub 10 rotating in the second rotation direction to the clutch flange plate 6, but torque cannot be transmitted in the reverse direction; when each rolling element 11 is located at the second extreme position, each rolling element 11 abuts between the corresponding guide profile and the outer hub 10, so that torque can be transmitted from the outer hub 10 rotating in the first rotation direction to the clutch flange plate 6, and correspondingly, torque can also be transmitted from the clutch flange plate 6 rotating in the second rotation direction to the outer hub 10, but torque cannot be transmitted in the reverse direction. When each rolling element 11 is located at other positions between the first extreme position and the second extreme position, the rolling element 11 cannot simultaneously abut the clutch flange plate 6 and the outer hub 10 to transmit torque.

[0026] The retainer 12 retains the circumferential position of the rolling element 11 relative to the clutch flange plate 6, and when there are multiple rolling elements 11, the retainer 12 also retains the circumferential position of these rolling elements 11 relative to each other, so that the circumferential position of each rolling element 11 relative to the corresponding guide profile is the same. The elastic biasing member 13 elastically abuts between the clutch flange plate 6 and the retainer 12 and biases the retainer 12 relative to the clutch flange plate 6 in the second rotation direction. The retainer 12 can selectively engage or disengage with the outer hub 10 in a torsionally fixed manner. When the retainer 12 is separated from the outer hub 10, the retainer 12 keeps the rolling element 11 away from the second extreme position under the biasing force of the elastic biasing member 13, so the torque in the corresponding direction (the torque transmitted from the outer hub 10 rotating in the first rotation direction to the clutch flange plate 6, and the torque transmitted from the clutch flange plate 6 rotating in the second rotation direction to the outer hub 10) cannot be transmitted, that is, the clutch is in a one-way torque transmission state; when the retainer 12 is in torsion-resistant engagement with the outer hub 10, the outer hub 10 rotating in the first rotation direction can drive the retainer 12 to overcome the biasing force of the elastic biasing member 13, thereby allowing the rolling element 11 to reach the second extreme position, so that the torque in the corresponding direction can be transmitted, that is, the clutch is in a two-way torque transmission state. Therefore, by controlling the engagement state of the retainer 12 and the outer hub 10, the clutch can be switched between the one-way torque transmission state and the two-way torque transmission state.

[0027] In order to facilitate the torsion-proof connection between the retainer 12 and the outer hub 10, the clutch further includes a connecting sleeve 14. The retainer 12 is torsionally connected to the connecting sleeve 14, and the connecting sleeve 14 can move axially relative to the outer hub 10 so as to selectively engage or separate with the outer hub 10 by friction. Specifically, the connecting sleeve 14 can include a tapered inner surface area 14a, and the outer hub 10 can correspondingly include a tapered outer surface area 10a. The tapered inner surface area 14a is located radially outside the tapered outer surface area 10a, and the tapered inner surface area 14a and the tapered outer surface area 10a can selectively engage or separate by friction through the axial movement of the connecting sleeve 14.

[0028] and Figure 1 Similar to the embodiment, Figure 2 The clutch in the embodiment may also include an electromagnetic actuator 9. The electromagnetic actuator 9 is configured to push the connecting sleeve 14 to move axially relative to the clutch flange plate 6, thereby frictionally contacting or separating with the outer hub 10.

[0029] According to the utility model, the vibration reduction device is integrated with the clutch, thereby reducing the overall size and number of components of the power system, thereby achieving a more compact layout. At the same time, the vibration reduction device and the clutch can be installed at one time, thereby saving installation steps and reducing installation costs.

[0030] Although possible embodiments are described exemplarily in the above description, it should be understood that there are still a large number of variations of embodiments through all known and other technical features and embodiments that can be easily thought of by the technician. It should also be understood that the exemplary embodiment is only an example, and such an embodiment does not limit the scope of protection, application and configuration of the utility model in any form. The above description is more to provide a technical guide for converting at least one exemplary embodiment to the technician, wherein various changes can be made, especially changes in the functions and structures of the components, as long as they do not depart from the scope of protection of the claims.

[0031] Reference numerals list

[0032] 1 First rotating part

[0033] 2 Second rotating member

[0034] 3. Damping spring

[0035] 4 Transmission input shaft

[0036] 5 Support plate

[0037] 6 Clutch flange plate

[0038] 7 First friction plate

[0039] 8 Second friction plate

[0040] 9 Electromagnetic actuator

[0041] 10 Outer hub

[0042] 10a Conical outer surface area

[0043] 11 Rolling elements

[0044] 12 Cage

[0045] 13. Elastic biasing member

[0046] 14 Connecting sleeve

[0047] 14a Conical inner surface area

Claims

1. A vibration damping device, comprising a first rotating component (1) and a second rotating component (2) which are coaxially arranged and rotatable relative to each other, and a vibration damping spring (3) abutting between the first rotating component (1) and the second rotating component (2) in a rotation direction, wherein the first rotating component (1) and the second rotating component (2) are capable of transmitting torque via the vibration damping spring (3). It is characterized in that The vibration reduction device further comprises a clutch, and the second rotating component (2) is connected to the clutch so that torque can be input and output via the clutch.

2. The vibration reduction device according to claim 1, characterized in that: The second rotating member (2) is located between the first rotating member (1) and the clutch in the axial direction.

3. The vibration reduction device according to claim 2, characterized in that: The clutch comprises a clutch flange plate (6) which is fixed to an axial side of the second rotating component (2) facing away from the first rotating component (1).

4. The vibration reduction device according to claim 3, characterized in that: The clutch further comprises a first friction plate (7) and a second friction plate (8) configured to be capable of frictionally contacting or separating with each other, wherein the first friction plate (7) is connected to the clutch flange plate (6) in a torsionally fixed manner.

5. The vibration reduction device according to claim 4, characterized in that: The clutch further comprises an electromagnetic actuator (9) mounted on the clutch flange plate (6), wherein the electromagnetic actuator (9) is configured to push the first friction disc (7) and the second friction disc (8) to move axially relative to each other, thereby frictionally contacting or separating them.

6. The vibration reduction device according to claim 3, characterized in that: The clutch further comprises an outer hub (10), a rolling element (11), a retaining frame (12) and an elastic biasing member (13); the clutch flange plate (6) and the outer hub (10) are coaxially arranged so as to be relatively rotatable; the clutch flange plate (6) comprises a guide profile formed on a radially outer surface; the rolling element (11) is radially arranged between the guide profile and the outer hub (10); the circumferential motion range of the rolling element (11) relative to the clutch flange plate (6) is limited by the guide profile between a first limit position and a second limit position; the first rotation The direction points from the first extreme position to the second extreme position, the rolling body (11) abuts between the guide profile and the outer hub (10) when located at the first extreme position, so that torque can be transmitted from the clutch flange plate (6) rotating along the first rotation direction to the outer hub (10), and the rolling body (11) abuts between the guide profile and the outer hub (10) when located at the second extreme position, so that torque can be transmitted from the outer hub (10) rotating along the first rotation direction to the clutch flange plate (6). 11) when located at other positions between the first extreme position and the second extreme position, the clutch flange plate (6) and the outer hub (10) cannot be abutted against each other to transmit torque, the retaining frame (12) maintains the circumferential position of the rolling element (11) relative to the clutch flange plate (6), the elastic biasing member (13) abuts between the clutch flange plate (6) and the retaining frame (12) and biases the retaining frame (12) relative to the clutch flange plate (6) in a circumferential direction opposite to the first rotation direction, and the retaining frame (12) It is capable of selectively engaging or disengaging with the outer hub (10) in a torsion-resistant manner. When the retaining frame (12) is separated from the outer hub (10), the retaining frame (12) keeps the rolling body (11) away from the second extreme position under the action of the biasing force of the elastic biasing member (13). When the retaining frame (12) is engaged with the outer hub (10) in a torsion-resistant manner, the outer hub (10) rotating along the first rotation direction can drive the retaining frame (12) to overcome the biasing force of the elastic biasing member (13) so as to allow the rolling body (11) to reach the second extreme position.

7. The vibration reduction device according to claim 6, characterized in that: The clutch further comprises a connecting sleeve (14), the retaining frame (12) being connected to the connecting sleeve (14) in a torsionally rigid manner, and the connecting sleeve (14) being axially movable relative to the outer hub (10) so as to selectively frictionally engage or disengage with the outer hub (10).

8. The vibration reduction device according to claim 7, characterized in that: The connecting sleeve (14) includes a tapered inner surface area (14a), and the outer hub (10) includes a tapered outer surface area (10a). The tapered inner surface area (14a) is located radially outside the tapered outer surface area (10a), and the tapered inner surface area (14a) and the tapered outer surface area (10a) can be selectively frictionally engaged or disengaged through axial movement of the connecting sleeve (14).

9. The vibration reduction device according to claim 8, characterized in that: The clutch further comprises an electromagnetic actuator (9), wherein the electromagnetic actuator (9) is configured to push the connecting sleeve (14) to move axially relative to the clutch flange plate (6), thereby frictionally contacting or separating with the outer hub (10).

10. The vibration damping device according to any one of claims 1 to 9, characterized in that: The vibration reduction device further comprises a support plate (5) fixed to the first rotating component (1), and the second rotating component (2) is rotatably supported on the support plate (5) in a radial direction via a bearing.

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