Vibration reduction mechanism with one-way torque transmission function

Abstract

The utility model relates to the technical field of automobile transmission system damping, aims to solve the problem of how to reduce reverse impact in a transmission system when an engine is started and stopped, and provides a damping mechanism with a one-way torque transmission function. The vibration reduction mechanism with the one-way torque transmission function comprises a driven disc, a vibration reduction disc and a vibration reduction spring, a center hole is formed in the vibration reduction disc, and a groove is formed in the hole wall of the center hole. The circumferential surface of the disc hub core protrudes to form a tooth part, and the tooth part is rotatably arranged in the center hole of the damping disc. The elastic connecting piece is elastically supported between the groove bottom wall of the groove and the tooth part in the radial direction so that the damping disc can drive the elastic connecting piece to rotate in the circumferential direction, and the tooth part can abut against the elastic connecting piece in the circumferential direction when the elastic connecting piece rotates clockwise so that the disc hub core and the damping disc can rotate together. Or the tooth part can abut against the elastic connecting piece in the radial direction when the elastic connecting piece rotates anticlockwise, so that the disc hub core does not rotate together with the damping disc, and the effect of reducing reverse impact in a transmission system when the engine is started and stopped is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile transmission system damping, in particular to a damping mechanism with one-way torque transmission. BACKGROUND

[0002] When the engine of the automobile outputs torque, torque fluctuation occurs. The transmission system of the automobile cannot completely avoid the exciting frequency of the engine due to the large system stiffness. Based on the above, system resonance occurs during torque transmission, resulting in abnormal vibration of the powertrain, vehicle body and other systems of the automobile. Generally, a torsional damper or a dual mass flywheel is added between the output shaft of the engine and the input shaft of the transmission to reduce vibration.

[0003] In the prior art, the forward and reverse slip torques of the torsional damper are the same. When the engine of the automobile starts and stops, there is a large reverse impact torque, which causes part of the reverse impact to be borne by the transmission system itself, resulting in abnormal vibration of the system. How to solve the above technical problems is a problem that needs to be considered by those skilled in the art. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a damping mechanism with one-way torque transmission to solve the problem of how to reduce the reverse impact in the transmission system during engine start and stop.

[0005] The embodiment of the present application provides a damping mechanism with one-way torque transmission, which comprises a driven disc, a damping disc and a damping spring. The driven disc and the damping disc are elastically connected through the damping spring. The damping disc is provided with a center hole. A groove is formed in the hole wall of the center hole. The damping mechanism with one-way torque transmission further comprises a disc hub core and an elastic connecting piece. The peripheral surface of the disc hub core is provided with a tooth portion. The tooth portion is rotatably arranged in the center hole of the damping disc. The peripheral surface of the tooth portion corresponds to the groove. The elastic connecting piece is elastically supported between the groove bottom wall of the groove and the tooth portion along the radial direction. The peripheral surface of the elastic connecting piece corresponds to the groove side wall, so that the damping disc can drive the elastic connecting piece to rotate along the circumferential direction. The tooth portion can resist the elastic connecting piece along the circumferential direction when the elastic connecting piece rotates clockwise, so that the disc hub core rotates together with the damping disc. Alternatively, the tooth portion can extrude the elastic connecting piece along the radial direction when the elastic connecting piece rotates counterclockwise, so that the disc hub core does not rotate together with the damping disc.

[0006] Compared with the prior art, the damping mechanism with one-way torque transmission provided by the embodiment has a groove on the hole wall of the center hole of the damping disc, the groove is used for accommodating the elastic connecting piece, one end of the elastic connecting piece is elastically supported on the groove bottom wall of the groove, and the other end is elastically supported on the circumferential surface of the tooth portion, the damping disc rotates to make the groove side wall resist the circumferential surface of the elastic connecting piece to drive the elastic connecting piece to rotate, when the damping disc drives the elastic connecting piece to rotate clockwise, the elastic connecting piece extends from the groove, and the elastic connecting piece resists the tooth portion in the clockwise direction to drive the hub core to rotate clockwise; when the damping disc drives the elastic connecting piece to rotate counterclockwise, the elastic connecting piece reciprocates in the radial direction in the groove, and the elastic connecting piece slides relative to the tooth portion in the circumferential direction, so that the hub core does not rotate counterclockwise with the damping disc, thereby reducing the reverse impact in the transmission system when the engine starts and stops.

[0007] In a possible implementation, the elastic connecting piece comprises an elastic portion and a resisting portion, the elastic portion is arranged in the groove, one end of the elastic portion is connected with the groove bottom wall of the groove, and the other end elastically supports the resisting portion, the resisting portion is arranged in the groove in an extendable and retractable manner, and the resisting portion protrudes from the groove towards the tooth portion.

[0008] In a possible implementation, the elastic portion is a spring, and the resisting portion is a pin block, one end of the spring is connected with the groove bottom wall of the groove, and the other end is connected with the pin block, the circumferential surface of the pin block corresponds to the groove side wall, and the pin block protrudes towards the tooth portion.

[0009] In a possible implementation, the tooth portion comprises a slope surface, one end of the slope surface is away from the hole wall of the center hole, and the other end is close to the hole wall of the center hole in the circumferential direction, and the slope surface extrudes the elastic connecting piece in the radial direction.

[0010] In a possible implementation, a plurality of slope surfaces are arranged, the plurality of slope surfaces are connected in a head-to-tail manner and are formed with steps, and the steps are used for resisting each other with the elastic connecting piece.

[0011] In a possible implementation, the tooth portion of the hub core is rotatably connected with the damping disc, and the hub core is used for outputting the clockwise torque of the damping disc.

[0012] In a possible implementation, the driven disc comprises a front cover plate, a rear cover plate, a friction plate, a disc spring, a pressing plate, a wave-shaped plate, and a disc body, the front cover plate and the rear cover plate are connected and enclose a containing cavity, the wave-shaped plate, the friction plate, the pressing plate, and the disc spring are sequentially stacked in the containing cavity, the friction plate is connected with the circumferential edge of the disc body to transmit torque, the damping disc corresponds to the disc body, and the damping spring is elastically supported between the damping disc and the disc body.

[0013] In a possible implementation, the disc body comprises a first disc body and a second disc body, the first disc body and the second disc body are arranged in a spaced manner, and the first disc body and the second disc body are fixedly connected, and the damping disc is arranged between the first disc body and the second disc body. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly introduced as follows. Obviously, the following drawings only show some of the embodiments of the present application, and should not be considered as limiting the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0015] Figure 1 Front view of the damping mechanism with one-way torque transmission of the embodiment of the present application;

[0016] Figure 2 Sectional view of the damping mechanism with one-way torque transmission of the embodiment of the present application along the line A-A; Figure 1

[0017] Figure 3 Another view of the damping mechanism with one-way torque transmission of the embodiment of the present application; Figure 1

[0018] B area of the damping mechanism with one-way torque transmission of the embodiment of the present application. Figure 4 Figure 3 Main element symbol explanation:

[0019] BRIEF DESCRIPTION OF DRAWINGS

[0020] 1, damping mechanism with one-way torque transmission; 11, driven disc; 111, front cover plate; 112, rear cover plate; 113, friction plate; 114, disc spring; 115, pressing plate; 116, wave-shaped sheet; 117, disc body; 1171, first disc body; 1172, second disc body; 1173, accommodating groove; 12, damping disc; 121, center hole; 122, groove; 123, groove bottom wall; 124, groove side wall; 13, damping spring; 14, disc hub core; 141, tooth part; 142, slope surface; 143, step; 15, elastic connecting piece; 151, elastic part; 152, abutting part; 16, clockwise direction. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely in the embodiments of the present application in combination with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0022] ​​Some embodiments of the present application are described in detail. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0023] Embodiments

[0024] Please refer to Figures 1 to 4 As shown in the drawings, the embodiment provides a damping mechanism 1 with one-way torque transmission, comprising a driven disc 11, a damping disc 12 and a damping spring 13, the driven disc 11 and the damping disc 12 are elastically connected through the damping spring 13, the damping disc 12 is provided with a central hole 121, and a groove 122 is formed in the hole wall of the central hole 121. The damping mechanism 1 with one-way torque transmission further comprises a disc hub core 14 and an elastic connecting piece 15. The peripheral surface of the disc hub core 14 is protruded to form a tooth portion 141, the tooth portion 141 is rotatably arranged in the central hole 121 of the damping disc 12, and the peripheral surface of the tooth portion 141 corresponds to the groove 122. The elastic connecting piece 15 is elastically supported between the groove bottom wall 123 of the groove 122 and the tooth portion 141 along the radial direction, the peripheral surface of the elastic connecting piece 15 corresponds to the groove side wall 124 of the groove 122, so that the damping disc 12 can drive the elastic connecting piece 15 to rotate along the circumferential direction, the tooth portion 141 can resist the elastic connecting piece 15 along the circumferential direction when the elastic connecting piece 15 rotates clockwise to make the disc hub core 14 rotate together with the damping disc 12, or the tooth portion 141 can extrude the elastic connecting piece 15 along the radial direction when the elastic connecting piece 15 rotates counterclockwise to make the disc hub core 14 not rotate together with the damping disc 12.

[0025] The damping mechanism 1 with one-way torque transmission provided by the embodiment is characterized in that the groove 122 is formed in the hole wall of the central hole 121 of the damping disc 12, the groove 122 is used to accommodate the elastic connecting piece 15, one end of the elastic connecting piece 15 is elastically supported on the groove bottom wall 123 of the groove 122, and the other end of the elastic connecting piece 15 is elastically supported on the peripheral surface of the tooth portion 141. When the damping disc 12 rotates, the groove side wall 124 of the groove 122 resists the peripheral surface of the elastic connecting piece 15 to drive the elastic connecting piece 15 to rotate. When the damping disc 12 drives the elastic connecting piece 15 to rotate clockwise, the elastic connecting piece 15 extends out of the groove 122, and the elastic connecting piece 15 resists the tooth portion 141 along the clockwise direction 16, thereby driving the disc hub core 14 to rotate clockwise. When the damping disc 12 drives the elastic connecting piece 15 to rotate counterclockwise, the elastic connecting piece 15 makes reciprocating extension and retraction movements in the radial direction in the groove 122, and the elastic connecting piece 15 slides along the circumferential direction relative to the tooth portion 141, thereby making the disc hub core 14 not rotate together with the damping disc 12 along the counterclockwise direction, so as to reduce the reverse impact in the transmission system when the engine starts and stops.

[0026] In the embodiment, when the driven disc 11 rotates along the clockwise direction 16, the driven disc 11 compresses the damping spring 13 along the clockwise direction 16, the elastic force of the damping spring 13 drives the damping disc 12 to rotate along the clockwise direction 16, so that the damping disc 12 drives the elastic connecting piece 15 to rotate along the clockwise direction 16, the elastic connecting piece 15 extends out of the groove 122 and abuts against the tooth portion 141, so that the torque along the clockwise direction 16 is transmitted to the hub core 14, and the hub core 14 rotates along the clockwise direction 16 together with the damping disc 12. Therefore, the damping disc 12 is used for relieving the impact of the torque along the clockwise direction 16 on the hub core 14, so as to stabilize the torque transmission and provide the damping and noise reduction functions.

[0027] When the driven disc 11 rotates along the counterclockwise direction, the driven disc 11 compresses the damping spring 13 along the counterclockwise direction, the elastic force of the damping spring 13 drives the damping disc 12 to rotate along the counterclockwise direction, so that the damping disc 12 drives the elastic connecting piece 15 to rotate along the counterclockwise direction. Since the elastic force of the elastic connecting piece 15 is small, the surface friction between the elastic connecting piece 15 and the tooth portion 141 is small, so that the elastic connecting piece 15 slides along the surface of the tooth portion 141, so that the torque along the counterclockwise direction cannot be transmitted to the hub core 14, and the hub core 14 does not rotate along the counterclockwise direction together with the damping disc 12. Therefore, the damping disc 12 does not transmit the torque along the counterclockwise direction to the hub core 14, so as to reduce the reverse impact in the transmission system when the engine starts and stops, and the damping mechanism 1 with the one-way torque transmission protects the transmission system.

[0028] In a possible implementation, the elastic connecting piece 15 includes an elastic portion 151 and an abutting portion 152, the elastic portion 151 is arranged in the groove 122, one end of the elastic portion 151 is connected with the groove bottom wall 123 of the groove 122, and the other end elastically supports the abutting portion 152, the abutting portion 152 is arranged in the groove 122 in an extendable and retractable manner, and the abutting portion 152 protrudes from the groove 122 towards the tooth portion 141.

[0029] In the embodiment, the elastic portion 151 has an elastic force for elastically supporting the abutting portion 152, so that the abutting portion 152 can extend and retract along the radial direction in the groove 122. When the elastic connecting piece 15 rotates along the counterclockwise direction, the elastic force of the elastic portion 151 is not enough to generate sufficient friction, so that the elastic connecting piece 15 slides along the surface of the tooth portion 141, so that the torque along the counterclockwise direction cannot be transmitted to the hub core 14, and the hub core 14 does not rotate along the counterclockwise direction together with the damping disc 12. Alternatively, the elastic portion 151 is a spring, or the elastic portion 151 is made of an elastic material, and the elastic portion 151 can provide the elastic force.

[0030] In a possible implementation, the elastic part 151 is a spring, the abutting part 152 is a pin block, one end of the spring is connected with the groove bottom wall 123 of the groove 122, the other end is connected with the pin block, the peripheral surface of the pin block corresponds to the groove side wall 124 of the groove 122, and the pin block protrudes towards the tooth part 141.

[0031] In the embodiment, the damping disc 12 drives the pin block to rotate together through the groove side wall 124 of the groove 122. When the damping disc 12 drives the pin block to rotate in the clockwise direction 16, the spring elastically supports the pin block to protrude out of the groove 122, the pin block abuts against the tooth part 141, and the pin block drives the tooth part 141 to rotate in the clockwise direction 16. When the damping disc 12 drives the pin block to rotate in the counterclockwise direction, the pin block does not abut against the tooth part 141, the pin block slides along the surface of the tooth part 141, the tooth part 141 extrudes the pin block, and the pin block reciprocatingly moves along the radial direction under the elastic force of the spring. Therefore, the damping disc 12 does not transmit the counterclockwise torque to the disc hub core 14, the reverse impact in the transmission system during the engine start-stop is reduced, and the one-way torque transmission damping mechanism 1 protects the transmission system.

[0032] In a possible implementation, the tooth part 141 includes a slope surface 142, one end of the slope surface 142 is away from the hole wall of the central hole 121, the other end is close to the hole wall of the central hole 121 along the circumferential direction, and the slope surface 142 extrudes the elastic connecting piece 15 along the radial direction.

[0033] In the embodiment, the slope surface 142 contacts the pin block. When the damping disc 12 drives the pin block to rotate in the counterclockwise direction, the pin block slides along the slope surface 142, the pin block protrudes out of the groove 122 when the pin block slides to the position corresponding to the slope surface 142 away from the hole wall of the central hole 121, and the pin block is retracted into the groove 122 when the pin block slides to the position corresponding to the slope surface 142 close to the hole wall of the central hole 121. Therefore, the damping disc 12 does not transmit the counterclockwise torque to the disc hub core 14 when rotating in the counterclockwise direction, the reverse impact in the transmission system during the engine start-stop is reduced, and the one-way torque transmission damping mechanism 1 protects the transmission system.

[0034] In a possible implementation, the slope surface 142 is provided with a plurality of slope surfaces 142, the plurality of slope surfaces 142 are connected in a head-to-tail manner and are formed with steps 143, and the steps 143 are used to abut against the elastic connecting piece 15.

[0035] In the embodiment, when the damping disc 12 drives the pin block to rotate in the clockwise direction 16, the pin block slides along the slope surface 142, the step 143 abuts against the elastic connecting piece 15 when the pin block slides to the position corresponding to the step 143, and the disc hub core 14 rotates together with the damping disc 12.

[0036] In a possible implementation, the tooth portion 141 of the hub core 14 is rotatably connected with the damping disc 12, and the hub core 14 is used to output the torque of the clockwise direction 16 of the damping disc 12.

[0037] In the embodiment, the torque of the engine output shaft is transmitted to the transmission through the hub core 14 of the damping mechanism 1 with one-way torque transmission, the hub core 14 outputs the torque of the clockwise direction 16, or the hub core 14 reduces the output of the torque of the counterclockwise direction, so as to reduce the reverse impact in the powertrain during engine start-stop, and the damping mechanism 1 with one-way torque transmission protects the powertrain.

[0038] In a possible implementation, the driven disc 11 includes a front cover plate 111, a rear cover plate 112, a friction plate 113, a disc spring 114, a pressing plate 115, a wave-shaped plate 116, and a disc body 117, the front cover plate 111 and the rear cover plate 112 are connected and enclosed to form an accommodation cavity, the wave-shaped plate 116, the friction plate 113, the pressing plate 115, and the disc spring 114 are sequentially stacked in the accommodation cavity, the friction plate 113 is connected with the periphery of the disc body 117 to transmit the torque, the damping disc 12 corresponds to the disc body 117, and the damping spring 13 is elastically supported between the damping disc 12 and the disc body 117.

[0039] In the embodiment, the front cover plate 111 and the rear cover plate 112 press the wave-shaped plate 116, the pressing plate 115, and the disc spring 114 in sequence, so that the friction plate 113 is fixed between the front cover plate 111 and the rear cover plate 112, and the friction plate 113 transmits the torque of the front cover plate 111 and the rear cover plate 112 to the disc body 117, and the disc body 117 transmits the torque to the damping disc 12 through the damping spring 13.

[0040] In a possible implementation, the disc body 117 includes a first disc body 1171 and a second disc body 1172, the first disc body 1171 and the second disc body 1172 are arranged at intervals, the first disc body 1171 and the second disc body 1172 are fixedly connected, and the damping disc 12 is arranged between the first disc body 1171 and the second disc body 1172.

[0041] In the embodiment, the first disc body 1171 and the second disc body 1172 are provided with an accommodation groove 1173, the damping spring 13 is arranged in the accommodation groove 1173, the two ends of the damping spring 13 along the length direction correspond to the groove walls of the accommodation groove 1173 along the circumferential direction, and the two ends of the damping spring 13 along the length direction correspond to the damping disc 12 along the circumferential direction, so that the damping spring 13 elastically connects the damping disc 12 and the disc body 117.

[0042] In summary, the damping mechanism 1 with one-way torque transmission provided by the embodiment has the following advantages. The damping mechanism 1 with one-way torque transmission is provided by opening a groove 122 on the hole wall of the center hole 121 of the damping disc 12, the groove 122 is used to accommodate the elastic connecting piece 15, one end of the elastic connecting piece 15 is elastically supported on the groove bottom wall 123 of the groove 122, and the other end is elastically supported on the circumferential surface of the tooth portion 141. The rotation of the damping disc 12 makes the groove side wall 124 of the groove 122 abut against the circumferential surface of the elastic connecting piece 15, so as to drive the elastic connecting piece 15 to rotate. When the damping disc 12 drives the elastic connecting piece 15 to rotate clockwise, the elastic connecting piece 15 extends from the groove 122, and the elastic connecting piece 15 abuts against the tooth portion 141 along the clockwise direction 16, so as to drive the disc hub core 14 to rotate clockwise. When the damping disc 12 drives the elastic connecting piece 15 to rotate counterclockwise, the elastic connecting piece 15 reciprocates in the radial direction in the groove 122, and the elastic connecting piece 15 slides along the circumferential direction relative to the tooth portion 141, so that the disc hub core 14 does not rotate counterclockwise together with the damping disc 12, so as to reduce the reverse impact in the transmission system when the engine starts and stops.

[0043] The above embodiments are only used to illustrate the technical solutions of the present application, and not limit the present application. Although the present application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application.

Claims

1. A damper mechanism having one-way torque transmission, comprising a driven plate, a damper plate, and a damper spring, the driven plate and the damper plate being elastically connected by the damper spring, characterized by, The damping disc is provided with a center hole, a groove is formed on the hole wall of the center hole, the damping mechanism with one-way torque transmission further comprises a disc hub core and an elastic connecting piece; A tooth part is formed on the peripheral surface of the disc hub core, the tooth part is rotatably arranged in the center hole of the damping disc, and the peripheral surface of the tooth part corresponds to the groove; The elastic connecting piece is elastically supported between the groove bottom wall and the tooth part along the radial direction, the peripheral surface of the elastic connecting piece corresponds to the groove side wall, so that the damping disc can drive the elastic connecting piece to rotate along the circumferential direction, the tooth part can resist the elastic connecting piece along the circumferential direction when the elastic connecting piece rotates clockwise to make the disc hub core rotate together with the damping disc, or the tooth part can extrude the elastic connecting piece along the radial direction when the elastic connecting piece rotates counterclockwise to make the disc hub core not rotate together with the damping disc.

2. The damping mechanism with one-way torque transmission according to claim 1, wherein: The elastic connecting piece comprises an elastic part and a resisting part, the elastic part is arranged in the groove, one end of the elastic part is connected with the groove bottom wall, and the other end elastically supports the resisting part, the resisting part is elastically arranged in the groove, and the resisting part protrudes from the groove towards the tooth part.

3. The damping mechanism with one-way torque transmission according to claim 2, wherein: The elastic part is a spring, the resisting part is a pin block, one end of the spring is connected with the groove bottom wall, and the other end is connected with the pin block, the peripheral surface of the pin block corresponds to the groove side wall, and the pin block protrudes towards the tooth part.

4. The damping mechanism with one-way torque transmission according to claim 1, wherein: The tooth part comprises a slope surface, one end of the slope surface is away from the hole wall of the center hole, and the other end is close to the hole wall of the center hole along the circumferential direction, and the slope surface extrudes the elastic connecting piece along the radial direction.

5. The damping mechanism with one-way torque transmission according to claim 4, wherein: A plurality of slope surfaces are arranged, the plurality of slope surfaces are connected in series and form a step, and the step is used for resisting the elastic connecting piece.

6. The damping mechanism with one-way torque transmission according to claim 1, wherein: The tooth part of the disc hub core is rotatably connected with the damping disc, and the disc hub core is used for outputting the clockwise torque of the damping disc.

7. The damping mechanism with one-way torque transmission according to claim 1, wherein: The driven disc comprises a front cover plate, a rear cover plate, a friction plate, a disc spring, a pressing plate, a wave-shaped plate and a disc body, the front cover plate and the rear cover plate are connected and form an accommodating cavity, the wave-shaped plate, the friction plate, the pressing plate and the disc spring are sequentially arranged in the accommodating cavity, the friction plate is connected with the peripheral edge of the disc body to transmit torque, the damping disc corresponds to the disc body, and the damping spring is elastically supported between the damping disc and the disc body.

8. The damping mechanism with one-way torque transmission according to claim 7, wherein: The disc body comprises a first disc body and a second disc body, the first disc body and the second disc body are arranged at intervals, the first disc body and the second disc body are fixedly connected, and the shock-absorbing disc is arranged between the first disc body and the second disc body.

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