Torque limiting damper and vehicle
By designing the matching structure between the damper plate and the disk hub in the torque-limiting vibration damper, the problem of poor vibration damper when the motor reverse drag engine is started is solved, effective vibration damping under different power sources is achieved, and the NVH performance of the whole vehicle is improved.
Patent Information
- Application Number
- CN202422315963.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-09-20
AI Technical Summary
The traditional torque-limited vibration damper has poor vibration damping effect when the motor reverse drag engine is started, affecting the NVH performance of the entire vehicle.
A torsion-limiting vibration damper is designed. By clamping the first damping plate, the second damping plate and the damping gasket between the disk hub and the first vibration damping plate, the first barrier structure of the second damping plate penetrates the disk hub and provides different side damping effects under the driving conditions of different power sources to adapt to the driving conditions of different power sources.
The vibration damping effect when the motor reverse drag engine is started is improved, the NVH performance of the entire vehicle is improved, and the hybrid system is rapidly stabilized.
Smart Images
Figure CN223306223U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of automobile power systems, and in particular to a torsion limiting shock absorber and a vehicle. Background Art
[0002] The torque-limiting damper assembly is installed between the engine and motor. Its primary function is to transmit torque and provide overload protection, thereby improving the vehicle's NVH performance. Conventional torque-limiting dampers are designed to absorb vibrations. However, when the motor reverses the engine's start-up, the impact is significant, and the damping effect of the torque-limiting damper is poor. Utility Model Content
[0003] Based on the above description, the present application provides a torque limiting vibration damper and a vehicle to solve the problem of poor vibration reduction effect of the traditional torque limiting vibration damper when the motor reverses and the engine is started.
[0004] According to a first aspect, the present application provides a torsion limiting vibration damper, comprising a first cover plate, a second cover plate, and a disc spring, a pressure plate, and a driven plate assembly sequentially mounted between the first cover plate and the second cover plate, the driven plate assembly comprising a driven plate and a vibration damping assembly connected to each other; the vibration damping assembly comprising a first vibration damping plate and a second vibration damping plate connected to the driven plate, characterized in that a disc core and a disc hub disposed around the disc core are provided between the first vibration damping plate and the second vibration damping plate, and a first damping plate, a second damping plate, and a damping gasket are sequentially clamped between the disc hub and the first vibration damping plate;
[0005] The disc hub is provided with a plurality of spring assemblies distributed circumferentially and spaced apart and arranged through the disc hub, wherein the plurality of spring assemblies extend through the first and second vibration damping discs in a first direction; a first blocking structure is provided on the outer circumference of the second damping plate, and the first blocking structure passes through the disc hub; one side of the first blocking structure advancing in the first rotational direction is in clearance engagement with the disc hub, and the other side is in contact engagement with the disc hub; the first damping plate and the damping washer are arranged to rotate synchronously with the first vibration damping disc;
[0006] The first direction is parallel to the axis direction of the disc core, and the first rotation direction is the same as the driving direction of the engine used by the torque limiting damper.
[0007] In one or more embodiments, the disk hub is provided with a limiting groove, the first blocking structure is located in the limiting groove, the limiting groove has a first side wall and a second side wall arranged in sequence along the first rotation direction, the first side wall is arranged in contact with the first blocking structure, and the second side wall is spaced apart from the first blocking structure.
[0008] In one or more embodiments, a second blocking structure is provided on the outer peripheral side of the second damping plate, and the second blocking structure is provided in contact with a side of the spring assembly moving along a second rotation direction, and the second rotation direction is the same as the return direction of the engine.
[0009] In one or more embodiments, the spring assembly includes a spring seat and a spring arranged on the spring seat; the spring seat has a first end and a second end arranged in sequence along the second rotation direction; the second blocking structure is contacted and arranged on one side of the second end.
[0010] In one or more embodiments, a first limiting structure is provided on the inner circumference of the first damping plate; a first limiting opening is provided on the inner circumference of the damping gasket, and the first limiting structure passes through the inner circumference of the second damping plate, the first limiting opening corresponding to the damping gasket, and the first vibration damping plate.
[0011] In one or more embodiments, the hub is provided with a plurality of circumferentially spaced limiting grooves, the outer periphery of the second damping plate is provided with a plurality of circumferentially spaced first blocking structures, each of the first blocking structures is located in a limiting groove; and / or
[0012] The disc hub is provided with a plurality of accommodating openings which are distributed at intervals in the circumferential direction, and each of the accommodating openings is provided with a spring assembly.
[0013] In one or more embodiments, the first blocking structure is configured as a claw-shaped structure, and the second blocking structure is configured as a long arm structure; and / or
[0014] The second blocking structure is provided with one.
[0015] In one or more embodiments, the first vibration damping plate is disposed toward the first cover plate, and the first cover plate is disposed toward the engine.
[0016] In one or more embodiments, a first friction disc is provided between the driven disc and the pressure disc, and a second friction disc is provided between the driven disc and the second cover plate.
[0017] According to a second aspect, the present application provides a vehicle comprising an engine, a motor and any one of the aforementioned torque limiting vibration dampers, wherein the first cover plate is mounted on the flywheel of the engine, and the output shaft of the motor is connected to the disc core.
[0018] Compared with the related art, the technical solution of this application has the following beneficial technical effects:
[0019] By sequentially clamping the first damping plate, the second damping plate and the damping gasket between the disc hub and the first vibration damping plate, the first blocking structure of the second damping plate passes through the disc hub. When the engine outputs torque to drive the motor, the engine drives the first cover plate, the second cover plate, the disc spring, the pressure plate, the driven plate, the first vibration damping plate and the second vibration damping plate to rotate, and transmits torque through the spring assembly to rotate the disc hub, the disc core, the first damping plate, the second damping plate and the damping gasket. Since the first blocking structure of the second damping plate is in clearance fit with the disc hub, the second damping plate will not be restricted by the disc hub when rotating, and the second damping plate will rotate with the first damping plate and the damping gasket. They rotate synchronously to produce smaller lateral damping; when the motor reverses and the engine is started, the motor drives the disc core, the disc hub, the second damping plate and the spring assembly to rotate first, and transmits torque through the spring assembly to rotate the first vibration damping disc, the second vibration damping disc, the first damping plate and the damping gasket afterwards. Since the first blocking structure of the second damping plate contacts and cooperates with the disc hub, the second damping plate moves relative to the first damping plate and the damping gasket, producing larger lateral damping. In this way, the torsion damper can adapt to the driving conditions of different power sources, effectively improve the vibration reduction effect when the motor reverses and the engine is started, and make the hybrid power system quickly stabilize. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 A schematic structural diagram of a torque limiting vibration damper provided in one embodiment of the present application;
[0021] Figure 2 for Figure 1 Schematic diagram of the explosion structure from the perspective of the torque limiting shock absorber;
[0022] Figure 3 for Figure 1 A schematic cross-sectional view of the torque limiting vibration damper along the AA section;
[0023] Figure 4 for Figure 1 A partial structural diagram of a torque limiting vibration damper;
[0024] Figure 5 for Figure 1 Torsional characteristic curve of the damping system in the torque limiting vibration damper.
[0025] Description of reference numerals:
[0026] Torsion limiting damper 100;
[0027] a first cover plate 10;
[0028] a second cover plate 20;
[0029] Disc spring 30;
[0030] Pressure plate 40;
[0031] Driven disc assembly 50, driven disc 51, first vibration damping disc 52, second vibration damping disc 53, disc core 54, disc hub 55, limiting groove 551, accommodating opening 552, first damping plate 56, first limiting structure 561, second damping plate 57, first blocking structure 571, second blocking structure 572, damping washer 58, spring assembly 59, spring seat 591, spring 592, vibration damping spring H, limiting block K;
[0032] a first friction disc 60;
[0033] a second friction disc 70;
[0034] First direction F1, first rotation direction X1. DETAILED DESCRIPTION
[0035] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.
[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.
[0037] It is understood that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediate element. In the following embodiments, "connection" should be understood as "electrical connection", "communication connection", etc., if the connected circuits, modules, units, etc. can transmit electrical signals or data to each other.
[0038] In hybrid powertrains, the torque limiter assembly is installed between the engine and motor. Its primary function is to transmit torque and provide overload protection, thereby improving the vehicle's NVH performance. Conventional torque limiters offer fixed-damping vibration absorption. When the engine's torque drives the motor, the impact is small, and the torque limiter has good damping performance. However, when the motor reverses the engine's rotation and starts the engine, the impact is significant, and the torque limiter's damping performance is poor.
[0039] Based on this, the embodiments of the present application provide a torque limiting vibration damper and a vehicle to solve the problem of poor vibration reduction effect of the traditional torque limiting vibration damper when the motor reverses and the engine is started.
[0040] Figure 1 A torque limiting vibration damper provided by an embodiment of the present application is shown. Figure 2 Shown Figure 1 Schematic diagram of the explosion structure from the perspective of the torque limiting shock absorber, Figure 3 Shown Figure 1 Schematic diagram of the cross section of the torque limiting vibration damper along the AA section, Figure 4 Shown Figure 1 Schematic diagram of the partial structure of the torque limiting vibration damper.
[0041] See Figures 1 to 4 A torque limiting vibration damper 100 provided in one embodiment of the present application includes a first cover plate 10, a second cover plate 20, and a disc spring 30, a pressure plate 40, and a driven plate assembly 50 installed in sequence between the first cover plate 10 and the second cover plate 20. The driven plate assembly 50 includes a driven plate 51 and a vibration damping assembly connected to each other; the vibration damping assembly includes a first vibration damping plate 52 and a second vibration damping plate 53 connected to the driven plate 51, a disc core 54 and a disc hub 55 arranged around the disc core 54 are provided between the first vibration damping plate 52 and the second vibration damping plate 53, and a first damping plate 56, a second damping plate 57, and a damping gasket 58 are clamped in sequence between the disc hub 55 and the first vibration damping plate 52. The disc hub 55 is provided with a plurality of spring assemblies 59 that are circumferentially spaced and arranged through the disc hub, and the plurality of spring assemblies 59 pass through the first vibration damping disc 52 and the second vibration damping disc 53 along the first direction F1; a first blocking structure 571 is provided on the outer peripheral side of the second damping plate 57, and the first blocking structure 571 passes through the disc hub 55; the first blocking structure 571 is clearance-fitted with the disc hub 55 on one side along the first rotation direction X1, and is in contact with the disc hub 55 on the other side; the first damping plate 56 and the damping gasket 58 are arranged to rotate synchronously with the first vibration damping disc 52; the first direction F1 is parallel to the axial direction of the disc core 54, and the first rotation direction X1 is the same as the driving direction of the engine used by the torque limiting vibration damper.
[0042] Specifically, the torque limiting damper 100 is installed between the engine and the motor, the first cover plate 10 is mounted on the engine's flywheel, and the disc core 54 is connected to the motor's output shaft. In this embodiment, the first damping disc 52 is positioned toward the first cover plate 10. In this embodiment, the engine is driven counterclockwise, and the first rotational direction X1 is counterclockwise. The first blocking structure 571 of the second damping plate 57 has a clearance fit with the disc hub 55 on one side of the disc hub 55 as it moves in the first rotational direction X1, and is in contact with the disc hub 55 on the other side.
[0043] It should be noted that the first cover plate 10 and the second cover plate 20 are connected and fixed by rivets, and the disc spring 30, the pressure plate 40 and the driven plate 51 are clamped between the first cover plate 10 and the second cover plate 20 in sequence. The driven plate 51 and the second vibration damping plate 53 are fixed by rivets, and a limiting block K is fixed through the first vibration damping plate 52, the driven plate 51 and the second vibration damping plate 53.
[0044] In this embodiment, the damping system is formed by sequentially clamping the first damping plate 56, the second damping plate 57 and the damping gasket 58 between the hub 55 and the first vibration damping plate 52, and the first blocking structure 571 of the second damping plate 57 passes through the hub 55. Figure 5 As shown, the torsional characteristic curve of the damping system in the torque limiting vibration damper in this embodiment, wherein the torsional angle in the positive direction of the horizontal axis represents the counterclockwise rotation angle of the damping system, and the torsional angle in the negative direction of the horizontal axis represents the clockwise rotation angle of the damping system.
[0045] When the engine outputs torque to drive the motor, the engine drives the first cover plate 10, the second cover plate 20, the disc spring 30, the pressure plate 40, the driven plate 51, the first vibration damping plate 52 and the second vibration damping plate 53 to rotate counterclockwise. At this time, the first vibration damping plate 52 and the second vibration damping plate 53 will drive the first damping plate 56, the second damping plate 57 and the damping gasket 58 to rotate first, and at the same time compress the spring assembly 59. The torque is transmitted through the spring assembly 59 to make the disc hub 55 rotate later. Due to the clearance fit between the first blocking structure 571 of the second damping plate 57 and the disc hub 55, the first blocking structure 571 of the second damping plate 57 that rotates first will not be restricted by the disc hub 55, so that the second damping plate 57 rotates synchronously with the first damping plate 56 and the damping gasket 58. The second damping plate 57 does not move relative to the first damping plate 56 and the damping gasket 58. The first damping plate 56 and the damping gasket 58 produce smaller side damping, such as Figure 5 shown.
[0046] When the motor reverses and the engine is started, the motor drives the disc core 54 and the disc hub 55 to rotate counterclockwise first. At this time, the first damping structure 571 of the second damping plate 57 contacts the disc hub 55. Driven by the disc hub 55, the second damping plate 57 rotates synchronously with the disc hub 55 and at the same time compresses the spring assembly 59. The torque is transmitted through the spring assembly 59 to rotate the first vibration damping plate 52 and the second vibration damping plate 53 backward, thereby causing the first damping plate 56 and the damping washer 58 to rotate backward. In this way, the second damping plate 57 moves relative to the first damping plate 56 and the damping washer 58, and the first damping plate 56, the second damping plate 57 and the damping washer 58 produce greater side damping. In this way, the torsion damper can adapt to the driving conditions of different power sources, effectively improve the vibration reduction effect when the motor reverses and the engine is started, and is beneficial to improving the NVH performance of the entire vehicle.
[0047] Continue reading Figure 4In some embodiments, the hub 55 is provided with a limiting groove 551, and a first blocking structure 571 is located within the limiting groove 551. The limiting groove 551 includes a first sidewall (not shown) and a second sidewall (not shown) spaced apart in sequence along the first rotational direction X1. The first sidewall is in contact with the first blocking structure 571, and the second sidewall is spaced apart from the first blocking structure 571. In this manner, the first blocking structure 571 of the second damping plate 57 has a clearance fit with the hub 55 on one side when advancing in the first rotational direction X1, while the other side is in contact with the hub 55. This allows the second damping plate 57 to provide significant side damping when the motor is reverse-driving the engine to start, but provides no side damping when the engine is outputting torque to drive the motor.
[0048] Continue reading Figure 2 and Figure 4 In some embodiments, a second blocking structure 572 is provided on the outer peripheral side of the second damping plate 57, and the second blocking structure 572 is contacted with the side of the spring assembly 59 moving along the second rotation direction, and the second rotation direction is the same as the return direction of the engine.
[0049] Specifically, in this embodiment, the driving direction of the engine is counterclockwise, and the return direction of the engine is clockwise. By setting the spring assembly 59 in contact with the second blocking structure 572 along the return direction of the engine, after the engine outputs the torque output motor, when the engine rotates clockwise in the return stroke, the engine drives the first cover plate 10, the second cover plate 20, the disc spring 30, the pressure plate 40, the driven plate 51, the first vibration damping plate 52 and the second vibration damping plate 53 to rotate clockwise. At this time, the first vibration damping plate 52 and the second vibration damping plate 53 It will drive the first damping plate 56, the second damping plate 57 and the damping gasket 58 to rotate first, and at the same time compress the spring assembly 59, and transmit torque through the spring assembly 59 to make the disc hub 55 rotate later. The second blocking structure 572 of the second damping plate 57 that rotates first will not be restricted, so that the second damping plate 57 rotates synchronously with the first damping plate 56 and the damping gasket 58, and the second damping plate 57 does not move relative to the first damping plate 56 and the damping gasket 58. In this way, the first damping plate 56 and the damping gasket 58 provide less damping to absorb the vibration generated during the return stroke of the engine.
[0050] After the motor reverses and the engine is started, when the motor rotates in the clockwise return stroke, the motor drives the disc core 54 and the disc hub 55 to rotate clockwise. Driven by the disc hub 55, the spring assembly 59 rotates first. Since the spring assembly 59 and the second blocking structure 572 of the second damping plate 57 are in contact with each other, the second damping plate 57 is driven to rotate first. After the spring assembly 59 is compressed, the torque is transmitted to make the first vibration damping plate 52 and the second vibration damping plate 53 rotate later, thereby making the first damping plate 56 and the damping gasket 58 rotate later. The second damping plate 57 moves relative to the first damping plate 56 and the damping gasket 58. The first damping plate 56, the second damping plate 57 and the damping gasket 58 produce greater side damping, which absorbs the vibration generated during the return stroke of the motor and reduces energy impact.
[0051] Continue reading Figure 3 and Figure 4 In some embodiments, the spring assembly 59 includes a spring seat 591 and a spring 592 mounted on the spring seat 591. The spring seat 591 has a first end (not shown) and a second end (not shown) spaced apart in sequence along the second rotational direction. The second blocking structure 572 contacts one side of the second end. Specifically, the spring seat 591 includes two mounting seats, with the two ends of the spring 592 fixedly connected to the corresponding mounting seats. The spring 592 compresses or expands along the circumference of the hub 55 to drive movement of one or both mounting seats. Furthermore, the spring seat 591 has a first end and a second end spaced apart in sequence along the second rotational direction. That is, the spring seat 591 has a first end and a second end spaced apart in sequence along the clockwise direction, with the first end corresponding to one mounting seat and the second end corresponding to the other mounting seat. Furthermore, the second blocking structure 572 contacts one side of the second end. Thus, during the motor return stroke, the spring assembly 59 rotates clockwise, and the second end of the spring seat 591 abuts the second blocking structure 572 of the second damping plate 57, driving the second damping plate 57 to rotate.
[0052] Continue reading Figure 2 and Figure 4 In some embodiments, a first limiting structure 561 is provided on the inner circumference of the first damping plate 56, and a first limiting opening (not shown in the figure) is provided on the inner circumference of the damping gasket 58. The first limiting structure 561 passes through the inner circumference of the second damping plate 57, the first limiting opening corresponding to the damping gasket 58, and the first vibration damping plate 52.
[0053] It should be noted that the hub 55 is sleeved around the outer periphery of the disk core 54, and the hub 55 and disk core 54 are splined to achieve synchronous rotation. A collar (not shown) is sleeved around the outer periphery of the disk core 54, creating relative friction between the collar and the disk core 54. A first damping plate 56, a second damping plate 57, and a damping washer 58 are located on the hub 55 and sequentially sleeved around the outer periphery of the disk core 54 along the axis of the disk core 54. The damping washer 58 engages with the collar, allowing the collar to follow the movement of the damping washer 58. The inner periphery of the first damping plate 56 is provided with a plurality of circumferentially distributed first retaining structures 561. The inner periphery of the damping washer 58 is provided with a first retaining opening. The first retaining structures 561 extend through the inner periphery of the second damping plate 57, the corresponding first retaining opening of the damping washer 58, and the first damping plate 52. This allows the first damping plate 56 and the damping washer 58 to rotate synchronously with the first damping plate 52.
[0054] Continue reading Figure 4 In some embodiments, the disk hub 55 is provided with a plurality of circumferentially spaced limiting grooves 551, and the outer periphery of the second damping plate 57 is provided with a plurality of circumferentially spaced first blocking structures 571, each of which is located in a limiting groove 551. It should be noted that the number of limiting grooves 551 and first blocking structures 571 can be set according to actual conditions, and this embodiment does not impose any restrictions thereon. In a specific embodiment, the disk hub 55 is provided with four circumferentially spaced limiting grooves 551, and the outer periphery of the second damping plate 57 is provided with four circumferentially spaced first blocking structures 571, and the four first blocking structures 571 are provided with the corresponding four limiting grooves 551. The disk hub 55 can drive the second damping plate 57 to rotate through the cooperation between the four first blocking structures 571 and the corresponding four limiting grooves 551.
[0055] Continue reading Figure 3 and Figure 4 In some embodiments, the hub 55 is provided with a plurality of circumferentially spaced receiving openings 552, each receiving opening 552 being provided with a spring assembly 59. Specifically, each spring seat 591 is engaged with a receiving opening 552. The spring seat 591 is limited in the first direction F1 and is movable in the circumferential direction of the hub 55. Thus, by providing multiple spring assemblies 59, the torque output by the motor is transmitted to start the engine, or the torque output by the engine is transmitted to start the motor, thereby providing overload protection.
[0056] Continue reading Figure 2 and Figure 4In some embodiments, the first blocking structure 571 is configured as a claw-shaped structure, and the second blocking structure 572 is configured as a long-arm structure. Furthermore, the second blocking structure 572 is provided with one. Specifically, the first blocking structure 571 of the second damping plate 57 is configured as a claw-shaped structure, and the second blocking structure 572 is configured as a long-arm structure. There are multiple first blocking structures 571, and the multiple first blocking structures 571 are circumferentially distributed on the outer peripheral side of the second damping plate 57. There is one second blocking structure 572, and the second blocking structure 572 is provided on the outer peripheral side of the second damping plate 57. In this way, the second damping plate 57 provides different damping under different working conditions of the power source, thereby improving the vibration reduction effect.
[0057] Continue reading Figure 2 and Figure 3 In some embodiments, a first friction plate 60 is disposed between the driven plate 51 and the pressure plate 40, and a second friction plate 70 is disposed between the driven plate 51 and the second cover plate 20. Thus, the first friction plate 60 and the second friction plate 70 are disposed on both sides of the driven plate 51, thereby ensuring that the static friction torque on both sides of the driven plate 51 is the same, providing overload protection and improving system reliability.
[0058] In some embodiments, a damping spring H is provided between the damping washer 58 and the first damping plate 52. In this embodiment, the damping spring H is provided to absorb vibration and impact energy, thereby improving the stability of the hybrid power system.
[0059] Based on the same inventive concept, an embodiment of the present application further provides a vehicle, comprising an engine, a motor and any of the aforementioned torque limiting vibration dampers 100 , wherein the first cover plate 10 is mounted on the flywheel of the engine, and the output shaft of the motor is connected to the disc core 54 .
[0060] Specifically, when the engine outputs torque to drive the motor, the first cover plate 10, the second cover plate 20, the disc spring 30, the pressure plate 40, and the driven plate 51 are driven to rotate via the engine's flywheel, and the first damping plate 52, the second damping plate 53, the spring assembly 59, the disc hub 55, the disc core 54, the first damping plate 56, the second damping plate 57, and the damping washer 58 are driven to rotate via the driven plate 51, thereby driving the output shaft of the motor to rotate. When the motor reverses to start the engine, the disc core 54, the disc hub 55, the spring assembly 59, the first damping plate 52, the second damping plate 53, the driven plate 51, the first damping plate 56, the second damping plate 57, and the damping washer 58 are driven to rotate via the motor's output shaft, and the first cover plate 10, the second cover plate 20, the disc spring 30, and the pressure plate 40 are driven to rotate via the driven plate 51, thereby driving the flywheel of the engine to rotate. It should be noted that under the driving conditions of the above two power sources, the first damping plate 56, the second damping plate 57 and the damping gasket 58 provide side damping of different sizes to absorb and reduce the vibrations and impacts generated under different driving conditions, thereby improving the vibration effect and thus enhancing the NVH performance of the entire vehicle.
[0061] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0062] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.
Claims
1. A torque limiting vibration damper, comprising a first cover plate, a second cover plate, and a disc spring, a pressure plate, and a driven plate assembly sequentially mounted between the first and second cover plates, wherein the driven plate assembly comprises a driven plate and a vibration damping assembly connected to each other; the vibration damping assembly comprises a first vibration damping plate and a second vibration damping plate connected to the driven plate, characterized in that: A disc core and a disc hub arranged around the disc core are provided between the first vibration damping disc and the second vibration damping disc, and a first damping plate, a second damping plate and a damping gasket are sequentially clamped between the disc hub and the first vibration damping disc; The disc hub is provided with a plurality of spring assemblies distributed circumferentially and spaced apart and arranged through the disc hub, wherein the plurality of spring assemblies extend through the first and second vibration damping discs in a first direction; a first blocking structure is provided on the outer circumference of the second damping plate, and the first blocking structure passes through the disc hub; one side of the first blocking structure advancing in the first rotational direction is in clearance engagement with the disc hub, and the other side is in contact engagement with the disc hub; the first damping plate and the damping washer are arranged to rotate synchronously with the first vibration damping disc; The first direction is parallel to the axis direction of the disc core, and the first rotation direction is the same as the driving direction of the engine used for the torque limiting vibration damper.
2. The torque limiting vibration damper according to claim 1, characterized in that: The disk hub is provided with a limiting groove, the first blocking structure is located in the limiting groove, the limiting groove has a first side wall and a second side wall arranged in sequence along the first rotation direction, the first side wall is arranged in contact with the first blocking structure, and the second side wall is spaced apart from the first blocking structure.
3. The torque limiting vibration damper according to claim 1, characterized in that: A second blocking structure is provided on the outer peripheral side of the second damping plate. The second blocking structure is arranged in contact with a side of the spring assembly moving forward along a second rotation direction. The second rotation direction is the same as the return direction of the engine.
4. The torque limiting vibration damper according to claim 3, characterized in that: The spring assembly includes a spring seat and a spring arranged on the spring seat; the spring seat has a first end and a second end arranged in sequence and spaced apart along the second rotation direction; the second blocking structure is contacted with one side of the second end.
5. The torque limiting vibration damper according to claim 1, characterized in that: A first limiting structure is provided on the inner circumference of the first damping plate; a first limiting opening is provided on the inner circumference of the damping gasket, and the first limiting structure passes through the inner circumference of the second damping plate, the first limiting opening corresponding to the damping gasket and the first vibration damping plate.
6. The torque limiting vibration damper according to any one of claims 1 to 5, characterized in that: The hub is provided with a plurality of circumferentially spaced limiting grooves, the outer periphery of the second damping plate is provided with a plurality of circumferentially spaced first blocking structures, each of the first blocking structures is located in a limiting groove; and / or The disc hub is provided with a plurality of accommodating openings which are distributed at intervals in the circumferential direction, and each of the accommodating openings is provided with a spring assembly.
7. The torque limiting vibration damper according to claim 3, characterized in that: The first blocking structure is configured as a claw-shaped structure, and the second blocking structure is configured as a long arm structure; and / or The second blocking structure is provided with one.
8. The torque limiting vibration damper according to any one of claims 1 to 5, characterized in that: The first vibration damping plate is disposed toward the first cover plate, and the first cover plate is disposed toward the engine.
9. The torque limiting vibration damper according to any one of claims 1 to 5, characterized in that: A first friction disc is provided between the driven disc and the pressure disc, and a second friction disc is provided between the driven disc and the second cover plate.
10. A vehicle, characterized in that: It comprises an engine, a motor and the torsion limiting vibration damper according to any one of claims 1 to 9, wherein the first cover plate is mounted on the flywheel of the engine, and the output shaft of the motor is connected to the disc core.