Universal disc hub assembly with press-in pre-damping module

Abstract

This utility model discloses a universal disc hub assembly with a press-fit pre-damping module, relating to the field of clutches. It includes a disc hub I, a disc hub II, and damping discs. Disc hub II has several spring limiting grooves evenly distributed along its circumference. Damping discs are symmetrically arranged on both sides of disc hub II. Each damping disc has a spring mounting slot at a position corresponding to a spring limiting groove. The springs inserted into the spring limiting grooves are pre-tightened at both ends through the corresponding spring mounting slots, forming a pre-damping assembly to achieve pre-damping. Disc hub I has internal splines on its inner ring for connecting to the input shaft of the gearbox, and external teeth on its outer ring for engaging disc hub II. The pre-damping assembly is press-fitted into disc hub I. This utility model is easy to install, efficient, replaceable, durable, and can be standardized for production, significantly reducing manufacturing costs.

Description

Technical Field

[0001] This utility model relates to the field of clutches, specifically to a universal disc hub assembly with a press-fit pre-damping module. Background Technology

[0002] The driven disc of a car clutch is one of the key components in the car transmission system. In high-torque transmission systems, the vibration damping performance of the clutch disc hub directly affects the reliability of the transmission system.

[0003] Currently, clutch disc hubs commonly use split-type bolted connections or heat-fitting processes to integrate vibration damping units, which have significant drawbacks: bolted connections are prone to loosening and failure under high torque conditions, leading to abnormal vibration transmission, and require complete replacement during maintenance, resulting in high costs per repair; while heat-fitting processes can connect the base material to the vibration damping unit, they require heating to temperatures above 600°C, resulting in high energy consumption, and the high temperature causes changes in the material's metallographic structure, reducing fatigue life by 30%-40%. Furthermore, traditional disc hubs are custom-designed, requiring replacement of the entire structure for different torque specifications, resulting in poor versatility. Therefore, there is an urgent need for a universal modular solution that uses an efficient press-fitting process to directly integrate the vibration damping unit with the disc hub base, adapting to multiple torque platforms, and improving wear resistance to meet long service life requirements. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a universal disc hub assembly with a press-fit pre-damping module. This assembly independently assembles and rivets the support pin, washer, disc hub III, wave washer II, positioning ring II, damping disc II, limit pin, and spring III into a pre-damping assembly, achieving standardization and universality. Simultaneously, adjusting the dimensions of the support pin opening and limit pin opening of the damping disc II adjusts the torsional angle, and adjusting the stiffness of spring III adjusts the torsional stiffness of the pre-damping. The outer side of disc hub I has equally spaced external teeth, which can be used with different specifications of outer disc hubs to achieve the function of a universal disc hub assembly. The external teeth also have stepped annular press-fit grooves, which can be cold-pressed into disc hub III to connect the pre-damping module. This universal disc hub assembly with a press-fit pre-damping module is not only easy to install, efficient, replaceable, and durable, but also allows for standardized production, significantly reducing costs.

[0005] The purpose of this utility model is achieved through the following technical solution: This universal disc hub assembly with a press-fit pre-damping module includes a disc hub I, a disc hub II, and a damping disc. The disc hub II has several spring limiting grooves evenly distributed along the circumferential direction. The damping discs are symmetrically arranged on both sides of the disc hub II. Each damping disc has a spring mounting slot at a position corresponding to the spring limiting groove. The two ends of the springs placed in the spring limiting grooves are pre-tightened through the corresponding spring mounting slots to form a pre-damping assembly and achieve pre-damping. The inner ring of the disc hub I has internal splines for connecting the input shaft of the gearbox, and the outer ring of the disc hub I has external teeth for cooperating with the disc hub II. The pre-damping assembly is press-fitted into the disc hub I.

[0006] As a further technical solution, one side of the external tooth is provided with a stepped annular pressing groove, which is used to cooperate with the pressing groove opened on the inner ring of the disc hub II. The pressing groove and the annular pressing groove correspond one-to-one.

[0007] As a further technical solution, a washer is installed between one side of the hub II and one of the damping discs, and a positioning ring is installed between the other side of the hub II and another damping disc. A constant-force wave washer is set between the positioning ring and the damping disc.

[0008] As a further technical solution, several limiting pins are evenly distributed along the circumference of each damping disc, and limiting pins are riveted to the damping disc near the washer through the limiting pins.

[0009] As a further technical solution, the positioning ring has several protrusions evenly distributed along the circumferential direction on the side surface away from the hub II. The protrusions correspond one-to-one with the limiting pins on the damping disc. The protrusions are embedded in the damping disc near the positioning ring through the limiting pins, so that the positioning ring is positioned on the damping disc.

[0010] As a further technical solution, several support pin holes are evenly distributed along the circumferential direction on each damping disc, and a support pin limiting groove is opened on the disc hub II at the position corresponding to the support pin hole. The support pin passes through the support pin hole and the corresponding support pin limiting groove to rivet and fix the two damping discs. The torsional angle of the pre-damping assembly is limited by the support pin.

[0011] As a further technical solution, the support pin and the limit pin are staggered.

[0012] The beneficial effects of this utility model are as follows: 1. The support pin, washer, disc hub III, wave washer II, positioning ring II, damping disc II, limit pin, and spring III are independently assembled and riveted into a pre-damping assembly to achieve standardization and universality of the pre-damping assembly; 2. Adjust the dimensions of the support pin and limit pin of the damping disc II to adjust the torsional angle, and adjust the stiffness of the spring III to adjust the pre-damping torsional stiffness. 3. The outer side of the disc hub I has equally spaced external teeth, which can be matched with different specifications of outer disc hubs to achieve the function of a universal disc hub assembly; 4. The outer teeth of disc hub I have a stepped annular pressing groove, which can be used with disc hub III for cold pressing to connect the pre-damping module; 5. This universal disc hub assembly with press-fit pre-damping module is not only easy to install, efficient, replaceable, and durable, but also standardized in production, which can greatly reduce costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0014] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0015] Figure 3 This is a three-dimensional structural diagram of the hub I in this utility model.

[0016] Figure 4 This is a schematic diagram of the main structure of the hub II in this utility model.

[0017] Figure 5 This is a schematic diagram of the structure of hub I and hub II after assembly in this utility model.

[0018] Figure 6 This is a schematic diagram of the vibration damping disc in this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Hub I, 2. Support pin, 3. Washer, 4. Hub II, 5. Wave washer, 6. Positioning ring, 6-1. Protrusion, 7. Damping disc, 8. Limiting pin, 9. Spring, 10. Internal spline, 11. External spline, 12. Annular pressing groove, 13. Spring mounting slot, 14. Limiting pin port, 15. Supporting pin port, 16. Pressing groove, 17. Spring limiting groove, 18. Supporting pin limiting groove. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings: Example: As attached Figures 1-6 As shown, this universal disc hub assembly with a press-fit pre-damping module includes a disc hub I1, a support pin 2, a washer 3, a disc hub II 4, a wave washer 5, a positioning ring 6, a protrusion 6-1, a damping disc 7, a limiting pin 8, a spring 9, an internal spline tooth 10, an external tooth 11, an annular press-fit groove 12, a spring mounting slot 13, a limiting pin port 14, a support pin port 15, a press-fit groove 16, a spring limiting groove 17, and a support pin limiting groove 18.

[0021] Reference Appendix Figure 4 Six spring-limiting grooves 17 (six in this embodiment, but other numbers are also possible) are evenly distributed along the circumference of the hub II 4. The spring-limiting grooves 17 are distributed in six equal parts. Figure 2 As shown, damping discs 7 are symmetrically arranged on the left and right sides of the hub II 4 (there are two damping discs 7 in total), as shown. Figure 6 As shown, spring mounting slots 13 (six in total) are opened at the corresponding positions of spring limiting slots 17 on each damping disc 7. A spring 9 is placed in each spring limiting slot 17. At the same time, the two ends of each spring 9 are pre-tightened through the corresponding spring mounting slots 13 to achieve pre-damping and form a pre-damping assembly (support pin 2, washer 3, disc hub II 4, wave washer 5, positioning ring 6, damping disc 7, limiting pin 8 and spring 9 are independently assembled and riveted into a pre-damping assembly).

[0022] like Figure 3 As shown, an internal spline 10 is formed on the inner ring of hub I1, which connects to the input shaft of the gearbox. The specifications of the internal spline 10 are adjusted according to the connected input shaft. Furthermore, an external tooth 11 is provided on the outer ring of hub I1. The external tooth 11 engages with hub II4 (spline drive), and can be used with hub II4 of different specifications to achieve the function of a universal hub assembly. Further, one side of the external tooth 11 has a stepped annular pressing groove 12. Simultaneously, a pressing groove 16 is formed on the inner ring of hub II4, corresponding one-to-one with the annular pressing groove 12, pressing the pre-damping assembly onto hub I1.

[0023] Reference Appendix Figure 2 A washer 3 is installed between the right side of the hub II4 and the right damping disc 7, and a positioning ring 6 is installed between the left side of the hub II4 and the left damping disc 7. A wave washer 5 is set between the positioning ring 6 and the left damping disc 7, and the wave washer 5 is constantly subjected to force between the positioning ring 6 and the left damping disc 7.

[0024] Furthermore, such as Figure 6 As shown, three limiting pins 14 are evenly distributed along the circumferential direction on each damping disc 7. A limiting pin 8 is riveted to the damping disc 7 near the washer 3 through the limiting pins 14. The limiting pin 8 can limit the torsional angle of the universal disc hub assembly relative to the driven disc.

[0025] On the side of positioning ring 6 that is away from hub II 4 (i.e.) Figure 2 Three protrusions 6-1 are evenly distributed along the circumference on the left side surface. The positions of the protrusions 6-1 correspond one-to-one with the limiting pins 14 on the damping disc 7. During assembly, the protrusions 6-1 are embedded into the damping disc 7 near the positioning ring 6 through the limiting pins 14, thereby positioning the positioning ring 6 on the damping disc 7.

[0026] Reference Appendix Figure 6 Three support pins 15 are evenly distributed along the circumference on each damping disc 7. Preferably, the support pins 15 and the limiting pins 14 are staggered. Figure 2 , 4 As shown, support pin limiting grooves 18 (three in total) are opened on the hub II 4 at positions corresponding to the support pin opening 15. The support pin 2 passes through the support pin opening 15 and the corresponding support pin limiting groove 18 to rivet and fix the two damping discs 7. The torsional angle of the pre-damping assembly can be limited by the support pin 2.

[0027] Preferably, the hub II4 is made of No. 45 steel, with an equally divided pressing groove 16 in the middle to connect with the hub I1. The six equally divided spring limiting groove 17 and the three equally divided support pin limiting groove 18 can adjust the pre-damping torsion angle.

[0028] The wave washer 5 is made of 65Mn material and is constantly stressed between the damping disc 7 and the positioning ring 6 to increase the damping force.

[0029] The positioning ring 6 is made of PA66 material, which not only positions the vibration damping disc 7, but also increases the damping force.

[0030] The disc hub I1 is an integrated component of the pre-damping module and the disc hub base through a cold pressing and embedding process.

[0031] The working process of this utility model: By independently assembling and riveting the support pin 2, washer 3, hub II 4, wave washer 5, positioning ring 6, damping disc 7, limiting pin 8, and spring 9 into a pre-damping assembly, the pre-damping assembly achieves standardization and universality. Simultaneously, adjusting the dimensions of the support pin opening 15 and the limiting pin opening 14 of the damping disc 7 adjusts the torsional angle, and adjusting the stiffness of the spring 9 adjusts the pre-damping torsional stiffness. The outer side of hub I 1 has equally spaced external teeth 11, which can be used with different specifications of outer hubs (hub II 4) to achieve the function of a universal hub assembly. The external teeth 11 also have stepped annular pressing grooves 12, which can be cold-pressed into hub II 4 to connect the pre-damping module. This universal hub assembly with a pressing-fit pre-damping module is not only easy to install, efficient, replaceable, and durable, but also can be standardized for production, significantly reducing manufacturing costs.

[0032] It is understood that, for those skilled in the art, any equivalent substitutions or modifications to the technical solutions and inventive concepts of this utility model should fall within the protection scope of the appended claims.

Claims

1. A universal disc hub assembly with a press-in pre-damping module, characterized by: The device includes a hub I (1), a hub II (4), and a damping disc (7). The hub II (4) has several spring limiting grooves (17) evenly distributed along the circumferential direction. The damping discs (7) are symmetrically arranged on both sides of the hub II (4). Each damping disc (7) has a spring mounting slot (13) at the position corresponding to the spring limiting groove (17). The springs (9) placed in the spring limiting groove (17) are pre-tightened at both ends through the corresponding spring mounting slots (13) to form a pre-damping assembly and realize pre-damping. The inner ring of the hub I (1) has an inner spline tooth (10) for connecting the input shaft of the gearbox. The outer ring of the hub I (1) has an outer tooth (11) for cooperating with the hub II (4). The pre-damping assembly is pressed into the hub I (1).

2. The universal disc hub assembly with press-in pre-damp module of claim 1, wherein: The outer tooth (11) has a stepped annular pressing groove (12) on one side, which is used to cooperate with the pressing groove (16) opened on the inner ring of the hub II (4). The pressing groove (16) and the annular pressing groove (12) correspond one-to-one.

3. The universal disc hub assembly with press-in pre-damp module of claim 1, wherein: A washer (3) is installed between one side of the hub II (4) and one of the damping discs (7); a positioning ring (6) is installed between the other side of the hub II (4) and another damping disc (7), and a constant-force wave washer (5) is provided between the positioning ring (6) and the damping disc (7).

4. The universal disc hub assembly with press-in pre-damp module of claim 3, wherein: Each damping disc (7) has several limiting pins (14) evenly distributed along the circumferential direction. On the damping disc (7) near the washer (3), a limiting pin (8) is riveted to it through the limiting pins (14).

5. The universal disc hub assembly with press-in pre-damp module of claim 4, wherein: The positioning ring (6) has several protrusions (6-1) evenly distributed along the circumferential direction on the side surface away from the hub II (4). The protrusions (6-1) correspond one-to-one with the limiting pins (14) on the damping plate (7). The protrusions (6-1) are embedded in the damping plate (7) near the positioning ring (6) through the limiting pins (14), so that the positioning ring (6) is positioned on the damping plate (7).

6. The universal disc hub assembly with press-in pre-damp module of claim 4 or 5, wherein: Several support pin holes (15) are evenly distributed along the circumferential direction on each damping disc (7). Support pin limiting grooves (18) are opened on the disc hub II (4) at the corresponding positions of the support pin holes (15). The support pin (2) passes through the support pin holes (15) and the corresponding support pin limiting grooves (18) to rivet and fix the two damping discs (7). The torsional angle of the pre-damping assembly is limited by the support pin (2).

7. The universal disc hub assembly with press-in pre-damp module of claim 6, wherein: The support pin (15) and the limiting pin (14) are staggered.

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