A clutch driven plate idle damper

Abstract

The utility model belongs to clutch technical field, concretely relates to a kind of clutch driven plate idling speed damper, including friction disc and driven disc hub, the riveting spring cover disc has one end in the friction disc, driven disc hub is provided between the friction disc and spring cover disc, the shock-absorbing assembly that is equidistantly distributed around driven disc hub axis is provided between the driven disc hub and friction disc, the shock-absorbing assembly includes end plate and annular plate, main spring is provided between the end plate and annular plate, one end of the main spring is fixedly connected with the one end of end plate, one end of the main spring is fixedly connected with connecting spring.The utility model, engine idling, the input torque required by gearbox is small, when friction disc rotates, it will squeeze shock-absorbing spring and connecting spring first, at this time, due to the stiffness coefficient of shock-absorbing spring and connecting spring is small, if weak tremor appears in the process of engine flywheel rotation, shock-absorbing spring and connecting spring can play the role of buffer, to reduce the transmission of tremor to gearbox, improve stability.

Description

Technical Field

[0001] This utility model belongs to the field of clutch technology, specifically relating to a clutch driven plate idle speed damper. Background Technology

[0002] The clutch is located inside the flywheel housing between the engine and the transmission. The clutch assembly is fixed to the rear surface of the flywheel with screws. The output shaft of the clutch is the input shaft of the transmission. During vehicle operation, the driver can press or release the clutch pedal as needed to temporarily separate and gradually engage the engine and transmission, thereby cutting off or transmitting the power input from the engine to the transmission. The clutch is a commonly used component in mechanical transmission, which can separate or engage the transmission system at any time.

[0003] Engines inevitably vibrate during operation, leading to unstable power output. Therefore, a damping structure is installed on the clutch to buffer engine vibration and improve power stability. The damping structure usually used is a single spring structure, which needs to dampen vibration not only under low torque conditions at idle speed but also under high torque conditions during driving. Therefore, its stiffness coefficient is relatively large, resulting in poor vibration damping effect at idle speed. Utility Model Content

[0004] The purpose of this invention is to provide a clutch driven plate idle speed damper, whose damping spring and connecting spring can play a buffering role, thereby reducing the transmission of vibration to the gearbox and improving stability, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a clutch driven plate idle speed damper, comprising a friction disc and a driven plate hub, wherein a spring cover disc is riveted to one end of the friction disc, a driven plate hub is disposed between the friction disc and the spring cover disc, and damping components are disposed between the driven plate hub and the friction disc, equidistantly distributed around the axis of the driven plate hub, the damping components comprising an end plate and an annular plate, a main spring is disposed between the end plate and the annular plate, one end of the main spring is fixedly connected to one end of the end plate, a connecting spring is fixedly connected to one end of the main spring, one end of the connecting spring is fixedly connected to one end of the annular plate, and a damping spring is disposed inside the main spring, the two ends of the damping spring being fixedly connected to one end of the end plate and one end of the annular plate, respectively.

[0006] Furthermore, the friction disk includes a base disk, with friction pads fixedly connected to both ends of the base disk. The surface of the base disk is provided with through grooves equidistantly distributed around the axis of the base disk, and equidistantly distributed limiting pins are fixedly connected to one side of the base disk.

[0007] Furthermore, the surface of the driven disc hub is provided with mounting grooves for mounting the shock absorption components. There are several mounting grooves, which are equidistantly distributed around the axis of the driven disc hub.

[0008] Furthermore, the sidewall of the driven disc hub is provided with U-shaped grooves that are evenly distributed, and a number of the limiting pins are respectively disposed inside the number of the U-shaped grooves.

[0009] Furthermore, the connecting spring and the damping spring have the same stiffness coefficient, and the stiffness coefficient of the main spring is 3-5 times that of the damping spring.

[0010] Furthermore, a cylinder is fixedly connected to one end of the annular plate, and the cylinder is inserted into the main spring.

[0011] Furthermore, the surface of the spring cover plate is provided with spring grooves corresponding to the shock-absorbing components.

[0012] Compared with the prior art, the beneficial effects of this utility model are: when the engine is idling, the input torque required by the transmission is small. When the friction disc rotates, it will first squeeze the damping spring and the connecting spring. At this time, since the stiffness coefficient of the damping spring and the connecting spring is small, if there is a slight vibration during the rotation of the engine flywheel, the damping spring and the connecting spring can play a buffering role, thereby reducing the transmission of vibration to the transmission and improving stability. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is an exploded view of the present invention; Figure 3 This is a front sectional view of the present invention; Figure 4 This is a front sectional view of the shock absorption component of this utility model.

[0014] The attached diagram lists the components represented by each number as follows: 1. Friction disc; 11. Base disc; 12. Friction pad; 13. Through groove; 14. Limiting pin; 2. Driven disc hub; 21. Mounting groove; 22. U-shaped groove; 3. Shock absorption assembly; 31. End plate; 32. Annular plate; 33. Main spring; 34. Connecting spring; 35. Shock absorption spring; 36. Cylinder; 4. Spring cover plate; 41. Spring groove. Detailed Implementation

[0015] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0016] like Figure 1-4 As shown, a clutch driven plate idle speed damper includes a friction disc 1 and a driven disc hub 2. A spring cover 4 is riveted to one end of the friction disc 1. The driven disc hub 2 is disposed between the friction disc 1 and the spring cover 4. A damping component 3 is disposed between the driven disc hub 2 and the friction disc 1, equidistantly distributed around the axis of the driven disc hub 2. The damping component 3 includes an end plate 31 and an annular plate 32. A main spring 33 is disposed between the end plate 31 and the annular plate 32. One end of the main spring 33 is fixedly connected to one end of the end plate 31. A connecting spring 34 is fixedly connected to one end of the main spring 33. One end of the connecting spring 34 is fixedly connected to one end of the annular plate 32. A damping spring 35 is disposed inside the main spring 33. The two ends of the damping spring 35 are fixedly connected to one end of the end plate 31 and one end of the annular plate 32, respectively.

[0017] According to the above structure, during use, when the friction disc 1 is squeezed by the pressure plate and comes into contact with the engine flywheel, the engine flywheel drives the friction disc 1 to rotate through static friction. The input shaft of the gearbox is connected to the driven disc hub 2 by pin 5. When the engine is idling, the input torque required by the gearbox is small. When the friction disc 1 rotates, it will first squeeze the damping spring 35 and the connecting spring 34. At this time, since the stiffness coefficient of the damping spring 35 and the connecting spring 34 is small, if a slight vibration occurs during the rotation of the engine flywheel, the damping spring 35 and the connecting spring 34 can play a buffering role, thereby reducing the transmission of vibration to the gearbox and improving stability.

[0018] like Figure 2 and 3 As shown, the friction disk 1 includes a base disk 11, with friction plates 12 fixedly connected to both ends of the base disk 11. The surface of the base disk 11 is provided with through grooves 13 equidistantly distributed around the axis of the base disk 11. One side of the base disk 11 is fixedly connected with equidistantly distributed limiting pins 14. The surface of the driven disk hub 2 is provided with mounting grooves 21 for mounting the shock absorption components 3. There are several mounting grooves 21, which are equidistantly distributed around the axis of the driven disk hub 2. The side wall of the driven disk hub 2 is provided with equidistantly distributed U-shaped grooves 22, and several limiting pins 14 are respectively disposed inside the several U-shaped grooves 22.

[0019] According to the above structure, when transmitting power, the flywheel drives the base plate 11 to rotate. The base plate 11 will first squeeze the damping component 3. As the damping component 3 is squeezed, the limiting pin 14 and the driven disc hub 2 rotate relative to each other. When the limiting pin 14 contacts the side wall of the U-shaped groove 22, the limiting pin 14 will push the driven disc hub 2 to rotate, thereby ensuring the output of large torque.

[0020] like Figure 4 As shown, the connecting spring 34 and the damping spring 35 have the same stiffness coefficient, and the stiffness coefficient of the main spring 33 is 3-5 times that of the damping spring 35. One end of the annular plate 32 is fixedly connected to a cylinder 36, which is inserted into the inside of the main spring 33.

[0021] According to the above structure, the damping spring 35 and the connecting spring 34 are used to buffer the load when idling. Since the torque transmitted at idle is small, the connecting spring 34 and the damping spring 35 with small stiffness coefficient have a good buffering effect. When starting, the main spring 33 is used to buffer and transmit large torque.

[0022] like Figure 2 As shown, the surface of the spring cover plate 4 is provided with a spring groove 41 corresponding to the shock-absorbing component 3.

[0023] According to the above structure, during installation, the spring cover plate 4 is fixedly connected to the driven plate hub 2 to limit the position of the damping assembly 3 in the axial direction.

[0024] The working principle of this utility model is as follows: During use, when the friction disc 1 is squeezed by the pressure plate, it contacts the engine flywheel. The engine flywheel drives the friction disc 1 to rotate through static friction. The input shaft of the gearbox is connected to the driven disc hub 2 via pin 5. When the engine is idling, the input torque required by the gearbox is small. When the friction disc 1 rotates, it will first squeeze the damping spring 35 and the connecting spring 34. At this time, because the stiffness coefficient of the damping spring 35 and the connecting spring 34 is small, if there is a slight vibration during the rotation of the engine flywheel, the damping spring 35 and the connecting spring 34 can play a buffering role, thereby reducing the vibration transmitted to the gearbox and improving stability. When transmitting power, the flywheel... The base plate 11 rotates, and the base plate 11 first squeezes the damping component 3. As the damping component 3 is squeezed, the limiting pin 14 and the driven disc hub 2 rotate relative to each other. When the limiting pin 14 contacts the side wall of the U-shaped groove 22, the limiting pin 14 will push the driven disc hub 2 to rotate, thereby ensuring the output of large torque. At idle speed, the damping spring 35 and the connecting spring 34 buffer the load. Since the torque transmitted at idle speed is small, the connecting spring 34 and the damping spring 35 with small stiffness coefficient have a good buffering effect. When starting, the main spring 33 buffers the load and transmits large torque. During installation, the spring cover plate 4 is fixedly connected to the driven disc hub 2 to limit the position of the damping component 3 in the axial direction.

[0025] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A clutch driven plate idle speed damper, comprising a friction disc (1) and a driven plate hub (2), characterized in that: One end of the friction disc (1) is riveted with a spring cover disc (4), a driven disc hub (2) is provided between the friction disc (1) and the spring cover disc (4), and shock-absorbing components (3) are equidistantly distributed around the axis of the driven disc hub (2) between the driven disc hub (2) and the friction disc (1). The shock-absorbing assembly (3) includes an end plate (31) and an annular plate (32). A main spring (33) is provided between the end plate (31) and the annular plate (32). One end of the main spring (33) is fixedly connected to one end of the end plate (31). A connecting spring (34) is fixedly connected to one end of the main spring (33). One end of the connecting spring (34) is fixedly connected to one end of the annular plate (32). A shock-absorbing spring (35) is provided inside the main spring (33). The two ends of the shock-absorbing spring (35) are fixedly connected to one end of the end plate (31) and one end of the annular plate (32), respectively.

2. The clutch driven plate idle speed damper according to claim 1, characterized in that: The friction disk (1) includes a base disk (11), and friction plates (12) are fixedly connected to both ends of the base disk (11). The surface of the base disk (11) is provided with through grooves (13) that are equidistantly distributed around the axis of the base disk (11). A limiting pin (14) that is equidistantly distributed is fixedly connected to one side of the base disk (11).

3. The clutch driven plate idle speed damper according to claim 2, characterized in that: The driven hub (2) has a mounting groove (21) for mounting the shock absorption assembly (3) on its surface. There are a plurality of mounting grooves (21), and the plurality of mounting grooves (21) are equidistantly distributed around the axis of the driven hub (2).

4. The clutch driven plate idle speed damper according to claim 3, characterized in that: The sidewall of the driven hub (2) is provided with U-shaped grooves (22) distributed at equal intervals, and several limiting pins (14) are respectively disposed inside several of the U-shaped grooves (22).

5. A clutch driven plate idle speed damper according to claim 4, characterized in that: The connecting spring (34) and the damping spring (35) have the same stiffness coefficient, and the stiffness coefficient of the main spring (33) is 3-5 times that of the damping spring (35).

6. A clutch driven plate idle speed damper according to claim 5, characterized in that: One end of the annular plate (32) is fixedly connected to a cylinder (36), which is inserted into the inside of the main spring (33).

7. A clutch driven plate idle speed damper according to claim 6, characterized in that: The surface of the spring cover plate (4) is provided with a spring groove (41) corresponding to the shock absorption component (3).

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