Driven disc damping device and clutch

Abstract

The utility model relates to the technical field of clutches, in particular to a driven disc damping device and a clutch. The driven disc vibration reduction device comprises a reinforcing disc, a vibration reduction unit and a cover plate unit, a first vibration reduction window and a second vibration reduction window are formed in the cover plate unit, the vibration reduction unit comprises a first vibration reduction spring and a second vibration reduction spring, and gaps are formed between the two ends of the second vibration reduction spring and the side wall of the second vibration reduction window. And when the reinforcing disc rotates and drives the first damping spring to start to be compressed, the second damping spring is idle, and when the reinforcing disc continues to rotate, the second damping window abuts against the second damping spring to be compressed for secondary damping. The two-stage vibration reduction effect is achieved through the first vibration reduction spring and the second vibration reduction spring, when the second vibration reduction spring does not intervene in work, the second vibration reduction spring does not make contact with the side wall of the second vibration reduction window, the rigidity of the second vibration reduction spring can be reduced on the basis that the torque is met, and abnormal sound in the using process is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of clutches, in particular to a driven disc vibration reduction device and a clutch. Background Art

[0002] The clutch is installed between the engine flywheel and the gearbox. It is mainly used to reduce or eliminate the resonance phenomenon generated by the engine and the transmission system, reduce the amplitude of the torsional vibration generated by the transmission system, alleviate the instantaneous maximum load of the transmission system, reduce the impact and increase the life of the transmission system parts, and make the car start smoothly. Usually, the power of the car comes from the engine. The torque generated by the engine is transmitted to the driven plate through the friction between the flywheel and the contact surface of the pressure plate and the driven plate. The power of the engine is intermittently generated as each cylinder works. This intermittent power will produce torsional impact on the parts of the automobile transmission system, and cause vibration and noise. In order to reduce this impact force, a driven plate vibration reduction system is designed on the driven plate.

[0003] Chinese patent document CN101553668A discloses a torsional vibration damping device, which includes a coaxially arranged active disk and a passive disk, wherein the central part of the active disk is provided with a spline hub for anti-rotation, and the outer edge of the passive disk is provided with a transmission flange, and a group of spring elements evenly spaced along the circumferential direction are provided between the active disk and the passive disk, and the spring elements are transmission-connected between the active disk and the passive disk and extend and retract along the circumference of the active disk. During use, when power is transmitted from the active disk to the passive disk, the active disk and the passive disk will rotate relative to each other and the spring elements will be compressed, so that the spring elements can store and transmit power, and the power stored by the spring elements can alleviate the fluctuations generated during the power transmission process, and play a vibration reduction effect. However, during the power transmission process, all spring elements are compressed, so when the fluctuations in the power transmission process are more severe, the primary vibration reduction of this group of spring elements will not meet the vibration reduction requirements, so that the vibration reduction performance of the entire torsional vibration damping device is reduced. Utility Model Content

[0004] The technical problem to be solved by the embodiments of the utility model is to provide a driven disc vibration reduction device and a clutch to solve the problem of poor vibration reduction effect of the clutch driven disc through primary vibration reduction in the prior art.

[0005] The utility model discloses a driven disc vibration reduction device, comprising a reinforcement disc, a vibration reduction unit arranged on the reinforcement disc, and a cover plate unit assembled on the reinforcement disc to limit the vibration reduction unit;

[0006] The cover plate unit is provided with a first vibration damping window and a second vibration damping window, the vibration damping unit comprises a first vibration damping spring arranged in the first vibration damping window, and a second vibration damping spring arranged in the second vibration damping window, two ends of the first vibration damping spring are respectively pressed against the side walls of the first vibration damping window, and a gap is formed between the two ends of the second vibration damping spring and the side walls of the second vibration damping window, so that when the reinforcement disk rotates and drives the first vibration damping spring to start compressing, the second vibration damping spring is idle, and when the reinforcement disk continues to rotate, the second vibration damping window presses the second vibration damping spring to compress for secondary vibration damping.

[0007] Optionally, retaining members are respectively provided on both sides of the second vibration damping spring in the second vibration damping window, and both ends of the second vibration damping spring are respectively pressed against the corresponding retaining members, so that the two retaining members position the second vibration damping spring.

[0008] Optionally, the vibration damping unit includes a plurality of first vibration damping springs and a plurality of second vibration damping springs distributed in a ring shape along the circumferential direction, the plurality of first vibration damping springs and the plurality of second vibration damping springs are alternately arranged, and at least two second vibration damping springs are arranged between two adjacent first vibration damping springs.

[0009] Optionally, a first limiting protrusion is formed on the first vibration damping window, and the first limiting protrusion presses against the outer side of the first vibration damping spring so that the first limiting protrusion limits the first vibration damping spring in the direction of moving out of the first vibration damping window.

[0010] Optionally, a second limiting protrusion is formed on the second vibration damping window, and the second limiting protrusion presses against the outer side of the second vibration damping spring so that the second limiting protrusion limits the second vibration damping spring in the direction of moving out of the second vibration damping window.

[0011] Optionally, a plurality of bolt holes are circumferentially arranged on the outer edge of the reinforcement plate, so that the reinforcement plate can be connected to the flywheel of the clutch through the pre-installed bolts in the bolt holes to transmit torque.

[0012] Optionally, the cover plate unit includes a first cover plate and a second cover plate which are arranged on both sides of the reinforcement plate and clamp and fix the reinforcement plate, and the first cover plate and the second cover plate are both provided with the first vibration damping window and the second vibration damping window.

[0013] Optionally, the driven disc vibration damping device also includes an integrated hub, the reinforcement disc and the integrated hub are meshingly connected, the first cover plate and the second cover plate are both arranged on the integrated hub and located on both sides of the reinforcement disc, so that the first cover plate and the second cover plate clamp and position the reinforcement disc.

[0014] Optionally, the driven disc vibration reduction device further comprises a damping pad and a wave spring arranged on the integral hub, and a group of the damping pad and the wave spring are respectively arranged between the first cover plate and the reinforcement disc and between the second cover plate and the reinforcement disc.

[0015] Based on the above-mentioned driven disc vibration damping device, the utility model further discloses a clutch, which comprises a driven disc and the driven disc vibration damping device arranged on the driven disc.

[0016] Compared with the prior art, the driven disc vibration reduction device provided by the embodiment of the utility model has the following beneficial effects:

[0017] A reinforcement plate, a vibration reduction unit and a cover plate unit are provided. A first vibration reduction spring is provided in a first vibration reduction window, and a second vibration reduction spring is provided in a second vibration reduction window. The two ends of the first vibration reduction spring are respectively pressed against the side wall of the first vibration reduction window, and a gap is formed between the two ends of the second vibration reduction spring and the side wall of the second vibration reduction window. When the reinforcement plate rotates and drives the first vibration reduction spring to start compression, the second vibration reduction spring is idle, and primary vibration reduction is performed at this time. When the reinforcement plate continues to rotate, the second vibration reduction window presses the second vibration reduction spring to compress and perform secondary vibration reduction, so that the first vibration reduction spring and the second vibration reduction spring play a two-stage vibration reduction role, thereby improving the vibration reduction performance of the entire driven plate vibration reduction device, and solving the problem that the vibration reduction effect of the primary vibration reduction in the prior art is not ideal. At the same time, a gap is formed between the two ends of the second vibration damping spring and the side wall of the second vibration damping window. When the reinforcement plate continues to twist after the first-level vibration damping, the second vibration damping spring contacts the cover unit and starts to work until the inner tooth angle of the reinforcement plate and the outer hub engage and limit. The limit design between the first vibration damping spring and the second vibration damping spring can better reduce the stiffness of the first vibration damping spring and the second vibration damping spring on the basis of meeting the torque, effectively avoid abnormal noise during use, and enhance the customer's user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The technical solution of the utility model will be further described in detail below with reference to the accompanying drawings and embodiments, in which:

[0019] Figure 1 A schematic diagram of the overall structure of the driven disc vibration reduction device provided by an embodiment of the utility model;

[0020] Figure 2 An exploded schematic diagram of the structure of the driven disc vibration reduction device provided by an embodiment of the utility model;

[0021] Figure 3 A schematic diagram of the distribution of the first damping spring and the second damping spring provided in an embodiment of the utility model.

[0022] The reference numerals in the figures are:

[0023] 1. Reinforcement plate; 11. Bolt hole; 2. First vibration-damping window; 21. Retaining member; 22. First limiting protrusion; 3. Second vibration-damping window; 31. Second limiting protrusion; 4. First vibration-damping spring; 5. Second vibration-damping spring; 6. First cover plate; 7. Second cover plate; 8. Integrated hub; 81. Damping pad; 82. Wave spring. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, a preferred embodiment of the present utility model is described in detail.

[0025] The utility model discloses a driven disc vibration reduction device, such as Figure 1-Figure 3 As shown, it includes a reinforcement plate 1, a vibration reduction unit arranged on the reinforcement plate 1, and a cover plate unit assembled on the reinforcement plate 1 to limit the vibration reduction unit;

[0026] The cover plate unit is provided with a first vibration damping window 2 and a second vibration damping window 3, and the vibration damping unit includes a first vibration damping spring 4 provided in the first vibration damping window 2, and a second vibration damping spring 5 provided in the second vibration damping window 3. The two ends of the first vibration damping spring 4 are respectively pressed against the side walls of the first vibration damping window 2, and a gap is formed between the two ends of the second vibration damping spring 5 and the side walls of the second vibration damping window 3, so that when the reinforcement plate 1 rotates and drives the first vibration damping spring 4 to start compressing, the second vibration damping spring 5 is idle, and when the reinforcement plate 1 continues to rotate, the second vibration damping window 3 presses the second vibration damping spring 5 to compress and perform secondary vibration damping.

[0027] Through the arrangement of the above structure, the two ends of the first damping spring 4 are respectively pressed against the side wall of the first damping window 2, and a gap is formed between the two ends of the second damping spring 5 and the side wall of the second damping window 3, so that when the reinforcing plate 1 rotates and drives the first damping spring 4 to start compressing, the second damping spring 5 is idle, and the first damping is performed at this time. When the reinforcing plate 1 continues to rotate, the second damping window 3 presses the second damping spring 5 to compress and perform the second damping, so that the first damping spring 4 and the second damping spring 5 play the role of two-stage damping, improve the damping performance of the entire driven plate damping device, and solve the problem that the damping effect of the first damping in the prior art is not ideal. At the same time, a gap is formed between the two ends of the second vibration damping spring 5 and the side wall of the second vibration damping window 3, so that the second vibration damping spring 5 has a movable margin. When the second vibration damping spring 5 is not involved in the work, the second vibration damping spring 5 does not contact the side wall of the second vibration damping window 3, and when the reinforcement disk 1 continues to twist after the first-level vibration damping, the second vibration damping spring 5 will contact the cover unit and start to work, and until the internal tooth angle of the reinforcement disk 1 and the outer hub are engaged and limited, this limit design between the first vibration damping spring 4 and the second vibration damping spring 5 can better reduce the stiffness of the first vibration damping spring 4 and the second vibration damping spring 5 on the basis of meeting the torque, and effectively avoid abnormal noise during use.

[0028] Furthermore, retaining members 21 are respectively provided on both sides of the second damping spring 5 in the second damping window 3, and the two ends of the second damping spring 5 are respectively pressed against the corresponding retaining members 21, so that the two retaining members 21 position the second damping spring 5. Through the arrangement of this structure, the retaining member 21 is preferably an elastic member, and the arrangement of the retaining member 21 can ensure that the two ends of the second damping spring 5 do not directly contact the second damping window 3, and prevent the second damping spring 5 from shaking in the second damping window 3, thereby improving the damping performance of the second damping spring 5.

[0029] Furthermore, combined with Figure 3 As shown, the vibration reduction unit includes a plurality of first vibration reduction springs 4 and a plurality of second vibration reduction springs 5 ​​distributed in a circular shape along the circumferential direction, and the plurality of first vibration reduction springs 4 and the plurality of second vibration reduction springs 5 ​​are alternately arranged, and at least two second vibration reduction springs 5 ​​are arranged between two adjacent first vibration reduction springs 4. Through the arrangement of this structure, the vibration reduction effect can be provided in different directions by the alternately arranged first vibration reduction springs 4 and the second vibration reduction springs 5, and the diversity and comprehensiveness of the vibration reduction can be increased. In addition, increasing the number of the second vibration reduction springs 5 ​​can further improve the secondary vibration reduction performance and effectively reduce the transmission of vibration and impact. At the same time, the structure of the alternate arrangement and the multi-spring arrangement increases the complexity and rigidity of the vibration reduction unit, which helps to improve its overall structural stability and resist the influence of external loads and vibrations. Preferably, the vibration reduction unit includes two first vibration reduction springs 4 and four second vibration reduction springs 5 ​​distributed in a circular shape along the circumferential direction.

[0030] Furthermore, a first limiting protrusion 22 is formed on the first damping window 2, and the first limiting protrusion 22 presses against the outer side of the first damping spring 4, so that the first limiting protrusion 22 limits the first damping spring 4 in the direction of moving out of the first damping window 2. Through the setting of this structure, the first limiting protrusion 22 can limit the movement range of the first damping spring 4, prevent it from excessively moving out of the first damping window 2, and help control the working stroke of the first damping spring 4 to ensure that it plays a damping role within the normal working range. At the same time, through the limitation of the first limiting protrusion 22, the position of the first damping spring 4 during operation is more stable, reducing the looseness, abnormal noise or other instability problems that may be caused by excessive movement of the first damping spring 4.

[0031] Furthermore, a second limiting protrusion 31 is formed on the second vibration damping window 3, and the second limiting protrusion 31 presses on the outer side of the second vibration damping spring 5, so that the second limiting protrusion 31 limits the direction in which the second vibration damping spring 5 moves out along the second vibration damping window 3. Through the setting of this structure, the second limiting protrusion 31 can limit the movement range of the second vibration damping spring 5, prevent it from excessively moving out of the second vibration damping window 3, help control the working stroke of the second vibration damping spring 5, and ensure that it plays a vibration damping role within the normal working range. At the same time, through the limitation of the second limiting protrusion 31, the position of the second vibration damping spring 5 during operation is more stable, reducing the looseness, abnormal noise or other instability problems that may be caused by excessive movement of the second vibration damping spring 5.

[0032] Furthermore, a plurality of bolt holes 11 are provided on the outer edge of the reinforcement plate 1 along the circumference, so that the reinforcement plate 1 can be connected to the flywheel of the clutch through the pre-installed bolts in the bolt holes 11 to transmit torque. With the arrangement of this structure, the flywheel of the clutch is connected by the reinforcement plate 1. When the torque of the flywheel is transmitted to the reinforcement plate 1 through the connected pre-installed bolts, the reinforcement plate 1 begins to twist. At this time, the first damping spring 4 takes effect, and the second damping spring 5 does not take effect, that is, the first-level twisting; when the reinforcement plate 1 continues to twist, the second damping spring 5 contacts the retaining member 21. At this time, the second damping spring 5 takes effect until the inner tooth angle of the reinforcement plate 1 and the outer hub are engaged and limited, thereby realizing the second-level damping.

[0033] Further, the cover plate unit includes a first cover plate 6 and a second cover plate 7 which are arranged on both sides of the reinforcement plate 1 and clamp and fix the reinforcement plate 1, and the first cover plate 6 and the second cover plate 7 are both provided with a first vibration reduction window 2 and a second vibration reduction window 3. Through the arrangement of this structure, the first cover plate 6 and the second cover plate 7 are connected by rivets to clamp and fix the reinforcement plate 1, so as to maintain the relative positions between the first cover plate 6, the second cover plate 7 and the reinforcement plate 1, thereby providing certain protection and stability.

[0034] Furthermore, the driven disc vibration damping device further includes an integrated hub 8, and the reinforcement disc 1 and the integrated hub 8 are meshedly connected. The first cover plate 6 and the second cover plate 7 are both arranged on the integrated hub 8 and located on both sides of the reinforcement disc 1, so that the first cover plate 6 and the second cover plate 7 clamp and position the reinforcement disc 1. Through the arrangement of this structure, the reinforcement disc 1, the first cover plate 6 and the second cover plate 7 are all assembled on the integrated hub 8, so that the reinforcement disc 1 transmits torque to the first cover plate 6 and the second cover plate 7 through the integrated hub 8, so as to realize the transmission of torque or motion.

[0035] Furthermore, the driven disc vibration damping device also includes a damping pad 81 and a wave spring 82 arranged on the integral hub 8, and a group of damping pads 81 and wave springs 82 are respectively arranged between the first cover plate 6 and the reinforcement plate 1, and between the second cover plate 7 and the reinforcement plate 1. Through the arrangement of this structure, the damping pad 81 and the wave spring 82 can absorb and dissipate vibration energy, reduce the vibration and impact generated by the driven disc vibration damping device during operation, and improve the ride comfort and durability of the components. At the same time, the pressure can be evenly distributed to prevent excessive stress from being generated at different positions of the driven disc vibration damping device, thereby protecting the components and extending the service life, and can effectively attenuate the vibration transmitted from one component to another, reduce the vibration transmission of the entire system, and improve the overall vibration reduction effect.

[0036] Based on the above-mentioned driven disc vibration damping device, the utility model further discloses a clutch, which comprises a driven disc and a driven disc vibration damping device arranged on the driven disc.

[0037] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit it. For those skilled in the art, the technical solutions described in the above embodiments can be modified, or some of the technical features therein can be replaced by equivalents; and all these modifications and replacements should fall within the scope of protection of the claims attached to the present utility model.

Claims

1. A driven plate vibration reduction device, characterized in that: The driven disc vibration damping device comprises a reinforcement disc, a vibration damping unit arranged on the reinforcement disc, and a cover plate unit assembled on the reinforcement disc to limit the vibration damping unit; The cover plate unit is provided with a first vibration damping window and a second vibration damping window, the vibration damping unit comprises a first vibration damping spring arranged in the first vibration damping window, and a second vibration damping spring arranged in the second vibration damping window, two ends of the first vibration damping spring are respectively pressed against the side walls of the first vibration damping window, and a gap is formed between the two ends of the second vibration damping spring and the side walls of the second vibration damping window, so that when the reinforcement disk rotates and drives the first vibration damping spring to start compressing, the second vibration damping spring is idle, and when the reinforcement disk continues to rotate, the second vibration damping window presses the second vibration damping spring to compress for secondary vibration damping.

2. The driven plate vibration reduction device according to claim 1, characterized in that: Retaining members are respectively arranged on both sides of the second damping spring in the second damping window, and both ends of the second damping spring are respectively pressed against the corresponding retaining members, so that the two retaining members position the second damping spring.

3. The driven plate vibration reduction device according to claim 1, characterized in that: The vibration damping unit includes a plurality of first vibration damping springs and a plurality of second vibration damping springs distributed in a circular shape along the circumferential direction. The plurality of first vibration damping springs and the plurality of second vibration damping springs are alternately arranged, and at least two second vibration damping springs are arranged between two adjacent first vibration damping springs.

4. The driven plate vibration reduction device according to claim 1, characterized in that: A first limiting protrusion is formed on the first vibration damping window, and the first limiting protrusion presses against the outer side of the first vibration damping spring so that the first limiting protrusion limits the first vibration damping spring in the direction in which the first vibration damping window moves out.

5. The driven plate vibration reduction device according to claim 1, characterized in that: A second limiting protrusion is formed on the second vibration damping window, and the second limiting protrusion presses against the outer side of the second vibration damping spring so that the second limiting protrusion limits the second vibration damping spring in the direction in which the second vibration damping window moves out.

6. The driven plate vibration reduction device according to claim 1, characterized in that: A plurality of bolt holes are arranged on the outer edge of the reinforcement plate in the circumferential direction, so that the reinforcement plate can be connected to the flywheel of the clutch through the pre-installed bolts in the bolt holes to transmit torque.

7. The driven plate vibration reduction device according to claim 1, characterized in that: The cover plate unit includes a first cover plate and a second cover plate which are arranged at both sides of the reinforcement plate and clamp and fix the reinforcement plate, and the first cover plate and the second cover plate are both provided with the first vibration reduction window and the second vibration reduction window.

8. The driven plate vibration reduction device according to claim 7, characterized in that: The driven disc vibration damping device also includes an integrated hub, the reinforcement disc and the integrated hub are meshingly connected, the first cover plate and the second cover plate are both arranged on the integrated hub and located on both sides of the reinforcement disc, so that the first cover plate and the second cover plate clamp and position the reinforcement disc.

9. The driven plate vibration reduction device according to claim 8, characterized in that: The driven plate vibration reduction device further includes a damping pad and a wave spring arranged on the integral hub, and a group of the damping pad and the wave spring are respectively arranged between the first cover plate and the reinforcement plate and between the second cover plate and the reinforcement plate.

10. A clutch, using the driven disc vibration reduction device according to any one of claims 1 to 9, characterized in that: The clutch includes a driven plate and a driven plate damping device arranged on the driven plate.

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