Torsion-limiting shock absorber with adjustable force
By designing an adjustable torque limiter structure in the torque limiter vibration damper, the combination of adjustment screws and adjustment springs is used to solve the problem of poor versatility of existing torque limiter vibration dampers, achieving higher versatility and production efficiency.
Patent Information
- Application Number
- CN202422035676.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-08-21
AI Technical Summary
The existing limited torsion dampers require the use of a variety of disc springs in actual production, which is poor in versatility and has a great impact on manufacturing costs.
An adjustable torque-limiting vibration damper is designed. The adjustability of the torque limiter is achieved by setting a boss on the friction plate and opening a mounting hole on the pressure plate cover, and adjusting the connection between the friction plate and the pressure plate cover is achieved by using adjustment screws and adjustment springs.
The adjustability of the torque limiter is realized, and it can be adjusted according to different torque limiting torques and vibration damper thicknesses, simplifying the assembly process and improving versatility and production efficiency.
Smart Images
Figure CN222880224U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of automobile shock absorbers, in particular to a torque-limiting shock absorber with adjustable force. Background Art
[0002] The torque limiting shock absorber is a special shock absorber, which is mainly used in the transmission system of new energy vehicles. It is installed between the engine and the motor. In normal operation, it plays the role of transmitting torque and reducing vibration and noise. When the torque transmitted by the engine or the torque transmitted by the motor during reverse start exceeds the set value of the shock absorber, the torque limiting function is realized through the sliding wear of the friction plate in the torque limiting shock absorber, protecting the shock absorber and parts in the transmission system from damage.
[0003] The torque transmitted by the existing torque-limiting shock absorber is related to the force value of the disc spring. The torque-limiting capacity is relatively fixed, and disc springs with different force values are required to match different torque-limiting torques. Therefore, the existing torque-limiting shock absorber needs to use a variety of disc springs in actual production, which has poor versatility and has a great impact on manufacturing costs.
[0004] Therefore, there is no torsion limiting vibration damper that can effectively solve the above problems. Utility Model Content
[0005] The utility model aims to overcome the shortcomings of the prior art and provide a torque limiting vibration damper with adjustable force, solve the problem of poor torque limiting universality of the existing torque limiting vibration damper and realize the standardization and universalization of main parts.
[0006] The purpose of the utility model is achieved through the following technical solutions: the adjustable force torque limiting vibration damper includes a torque limiter sub-assembly and a vibration damper sub-assembly;
[0007] The torque limiter sub-assembly comprises a friction plate and a pressure plate cover arranged on the outer periphery of the friction plate, a plurality of mounting holes are evenly arranged on the top of the pressure plate cover along the circumferential direction, a plurality of bosses are arranged on the surface of the friction plate facing the pressure plate cover, the bosses correspond to the mounting holes one by one, the pressure plate cover and the friction plate are fixed after the adjusting screw passes through the mounting hole, an adjusting spring is sleeved on the outer periphery of the boss, so that the adjusting spring is pressed between the friction plate and the pressure plate cover;
[0008] The shock absorber subassembly includes a friction plate, a driven plate, an outer disc hub, a damping plate and an inner disc hub. A plurality of spring plates are fixed between the two friction plates by friction plate rivets. The other end of each spring plate is fixed to the driven plate by a spring plate rivet. The damping plate is arranged on a side close to the pressure plate cover, and the damping plate and the driven plate are riveted by a supporting pin. The outer disc hub is relatively rotatably sleeved on the outer periphery of the inner disc hub, and is positioned between the driven plate and the damping plate by a positioning assembly.
[0009] As a further technical solution, the positioning assembly includes a positioning ring I and a positioning ring III which are sleeved on the inner disk hub, wherein the positioning ring I is arranged between the driven disk and the outer disk hub and is slotted with the driven disk, a disc spring II is arranged between the positioning ring III and the damping disk, a positioning ring II is arranged on the outer periphery of the positioning ring III, and a disc spring I is arranged between the positioning ring II and the damping disk.
[0010] As a further technical solution, windows are provided at corresponding positions of the driven plate, the outer hub and the damping plate for inserting spring I, so that spring I is evenly distributed along the circumferential direction of the damper sub-assembly, and a spring II is arranged in each spring I; the outer hub cooperates with the external spline of the inner hub through a special-shaped hole arranged in the center, and an installation groove is arranged between the special-shaped hole and the external spline, and the spring III is placed in the installation groove through the spring seat.
[0011] As a further technical solution, a fixing hole is opened in the center of the boss, and the adjusting screw is pressed against the pressure plate cover through a flat washer and connected to the fixing hole after passing through the mounting hole.
[0012] As a further technical solution, the inner edge of the mounting hole protrudes downward to form a flange, so that one end of the adjusting spring is sleeved on the boss and the other end is sleeved on the flange.
[0013] As a further technical solution, a plurality of ears are evenly arranged along the outer circumference of the friction plate for being inserted into corresponding slots on the inner wall of the pressure plate cover.
[0014] As a further technical solution, the installation quantity of the regulating springs is adjusted according to different torque limiting torques.
[0015] As a further technical solution, the working length of the adjusting spring is adjusted by turning an adjusting screw to adapt to different thicknesses of the shock absorber sub-assembly.
[0016] As a further technical solution, a connecting hole for connecting to the flywheel assembly is provided on the pressure plate cover, so that the friction plate is pressed on one of the friction plates, and the other friction plate is pressed tightly on the flywheel assembly.
[0017] The beneficial effects of the utility model are:
[0018] 1. There is no riveting structure between the parts of the conventional torque limiter sub-assembly, and the parts need to be assembled together through auxiliary mounting parts, and specific fixtures are also needed. The utility model adds a boss on the friction plate, and cooperates with the opening on the pressure plate cover, so that the pressure plate cover and the friction plate can be connected through adjusting screws, which is simple and quick to assemble;
[0019] 2. The boss and flange serve as spring seats for placing the adjustment springs, and the positioning is more accurate. When different torque limits are required, the requirements can be met by selecting different numbers of adjustment springs; when different shock absorber assembly thicknesses need to be matched, the requirements can be met by adjusting the working length of the adjustment springs;
[0020] 3. The friction plate is assembled through the ear and the slot of the pressure plate cover, which ensures accurate positioning and easy assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a structural schematic diagram of the utility model.
[0022] Figure 2 for Figure 1 AA section view.
[0023] Figure 3 for Figure 2 A partial enlarged schematic diagram of area B in the middle.
[0024] Figure 4 It is a three-dimensional structural schematic diagram of the utility model.
[0025] Figure 5 It is a structural schematic diagram of the friction plate in the utility model.
[0026] Figure 6 It is a structural schematic diagram of the shock absorber sub-assembly in the utility model.
[0027] Figure 7 The three-dimensional structure of the intermediate pressure plate cover of the utility model is shown in FIG. Figure 1 .
[0028] Figure 8 The three-dimensional structure of the intermediate pressure plate cover of the utility model is shown in FIG. Figure 2 .
[0029] Fig. 9 It is a schematic diagram of the top view of the torque limiter subassembly in the utility model.
[0030] Fig.10 It is a cross-sectional structural schematic diagram of the torque limiter subassembly in the utility model.
[0031] Fig.11 It is a schematic structural diagram of the driven disc, the inner disc hub and the outer disc hub after being assembled in the utility model.
[0032] Explanation of the accompanying drawings: pressure plate cover 1, adjusting spring 2, friction plate 3, friction plate 4, friction plate rivet 5, spring plate 6, driven plate 7, supporting pin 8, outer disk hub 9, positioning ring I 10, spring III 11, spring seat 12, vibration damping plate 13, positioning ring II 14, disc spring I 15, positioning ring III 16, disc spring II 17, inner disk hub 18, spring I 19, spring II 20, spring plate rivet 21, flat washer 22, adjusting screw 23, boss 24, fixing hole 25, mounting hole 26, flange 27, ear 28, slot 29, connecting hole 30, window 31, mounting slot 32, torque limiter sub-assembly 100, shock absorber sub-assembly 200. DETAILED DESCRIPTION
[0033] The utility model will be described in detail below with reference to the accompanying drawings:
[0034] Example: As attached Figures 1 to 11 As shown, the adjustable force torque limiting vibration damper includes a pressure plate cover 1, an adjusting spring 2, a friction plate 3, a friction plate 4, a friction plate rivet 5, a spring plate 6, a driven plate 7, a support pin 8, an outer disc hub 9, a positioning ring I 10, a spring III 11, a spring seat 12, a vibration damping plate 13, a positioning ring II 14, a disc spring I 15, a positioning ring III 16, a disc spring II 17, an inner disc hub 18, a spring I 19, a spring II 20, a spring plate rivet 21, a flat washer 22, an adjusting screw 23, a boss 24, a fixing hole 25, a mounting hole 26, a flange 27, an ear 28, a slot 29, a connecting hole 30, a window 31, a mounting slot 32, a torque limiter subassembly 100 and a vibration damper subassembly 200.
[0035] Reference Figure 1 , 2 4. The torque limiter subassembly 100 includes a friction plate 3 and a pressure plate cover 1 disposed on the outer periphery of the friction plate 3. Figure 7 As shown, eight mounting holes 26 (or other numbers) are evenly arranged on the top of the pressure plate cover 1 along the circumferential direction. Figure 5 As shown, eight bosses 24 are provided on the surface of the friction plate 3 facing the pressure plate cover 1, and the bosses 24 correspond to the mounting holes 26 one by one, so that the pressure plate cover 1 and the friction plate 3 are fixed after the adjusting screw 23 passes through the mounting holes 26. Furthermore, a fixing hole 25 is provided at the center of the boss 24, and the adjusting screw 23 is pressed against the pressure plate cover 1 through a flat washer 22, and is threadedly connected to the fixing hole 25 after passing through the mounting holes 26. An adjusting spring 2 is sleeved on the outer periphery of the boss 24, so that the adjusting spring 2 is pressed between the friction plate 3 and the pressure plate cover 1, preferably, as shown in FIG. Figure 8 As shown, the inner edge of each mounting hole 26 protrudes downward to form a flange 27 , and the boss 24 and the flange 27 serve as spring seats, so that one end of the adjusting spring 2 is sleeved on the boss 24 and the other end is sleeved on the flange 27 .
[0036] A plurality of ears 28 are evenly arranged along the outer periphery of the friction plate 3, and the ears 28 can be inserted into corresponding slots 29 on the inner wall of the pressure plate cover 1. Figure 4 As shown. Preferably, the number of adjustment springs 2 installed is adjusted according to different torque limiting torques, that is, the adjustment springs 2 are not installed between all eight bosses 24 and flanges 27, but are selectively installed according to torque limiting torque requirements. The working length of the adjustment spring 2 is adjusted by turning the adjustment screw 23, so as to adapt to different thicknesses of the shock absorber sub-assembly 200.
[0037] like Figure 1 , 2 As shown in Figures 6 and 11, the shock absorber subassembly 200 includes a friction plate 4, a driven plate 7, an outer disc hub 9, a damping plate 13 and an inner disc hub 18. A plurality of spring plates 6 are fixed between the two friction plates 4 by friction plate rivets 5. The other end of each spring plate 6 is fixed to the driven plate 7 by a spring plate rivet 21. The damping plate 13 is arranged on a side close to the pressure plate cover 1, and the damping plate 13 and the driven plate 7 are riveted together by a supporting pin 8. The outer disc hub 9 is relatively rotatably sleeved on the outer periphery of the inner disc hub 18, and is positioned between the driven plate 7 and the damping plate 13 by a positioning assembly.
[0038] Furthermore, the positioning assembly includes a positioning ring I10 and a positioning ring III16 sleeved on the inner disk hub 18, wherein the positioning ring I10 is arranged between the driven disk 7 and the outer disk hub 9, and forms a slot-type fit with the driven disk 7, a disc spring II17 is arranged between the positioning ring III16 and the damping disk 13, a positioning ring II14 is arranged on the outer periphery of the positioning ring III16, and a disc spring I15 is arranged between the positioning ring II14 and the damping disk 13. Windows 31 (a total of four groups of windows 31) are provided at corresponding positions of the driven disk 7, the outer disk hub 9 and the damping disk 13, and a spring I19 is inserted into each group of windows 31, so that the springs I19 are evenly distributed along the circumferential direction of the damper sub-assembly 200, and a spring II20 is arranged in each spring I19. The outer hub 9 cooperates with the outer spline of the inner hub 18 through the special-shaped hole arranged at the center, and a mounting groove 32 is arranged between the special-shaped hole and the outer spline, and the spring III 11 is placed in the mounting groove 32 through the spring seat 12.
[0039] Preferably, a connecting hole 30 is opened on the pressure plate cover 1, and the connecting hole 30 is connected to the flywheel assembly through bolts, so that the friction plate 3 is pressed on one of the friction plates 4, and the other friction plate 4 is pressed on the flywheel assembly.
[0040] The working principle of this utility model:
[0041] The friction plate 3 exerts force through the elastic element (adjusting spring 2) on the friction assembly (friction plate 4) to generate a certain friction torque. When the transmitted torque exceeds the set limit, relative sliding will occur between the friction plate 4 and the friction plate 3, which plays a torque limiting function. When different torque limiting torques are required, different applied forces are required. The requirements for generating different applied forces are achieved by adjusting the number or working length of the adjusting springs 2; at the same time, the torque capacity of the shock absorber subassembly 200 is increased to adapt to more torque transmission requirements.
[0042] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and the concept of the utility model should fall within the protection scope of the claims attached to the utility model.
Claims
1. A torque limiting vibration damper with adjustable force, characterized in that: It comprises a torque limiter sub-assembly (100) and a shock absorber sub-assembly (200); The torque limiter sub-assembly (100) comprises a friction plate (3) and a pressure plate cover (1) arranged on the outer periphery of the friction plate (3); a plurality of mounting holes (26) are evenly arranged on the top of the pressure plate cover (1) along the circumferential direction; a plurality of bosses (24) are arranged on the surface of the friction plate (3) facing the pressure plate cover (1); the bosses (24) correspond to the mounting holes (26) one by one, so that the pressure plate cover (1) and the friction plate (3) are fixed after the adjusting screw (23) passes through the mounting hole (26); an adjusting spring (2) is sleeved on the outer periphery of the boss (24) so that the adjusting spring (2) is pressed between the friction plate (3) and the pressure plate cover (1); The shock absorber subassembly (200) comprises a friction plate (4), a driven plate (7), an outer disc hub (9), a damping plate (13) and an inner disc hub (18); a plurality of spring plates (6) are fixed between two friction plates (4) via friction plate rivets (5); the other end of each spring plate (6) is fixed to the driven plate (7) via a spring plate rivet (21); the damping plate (13) is arranged on a side close to the pressure plate cover (1), and the damping plate (13) and the driven plate (7) are riveted via a support pin (8); the outer disc hub (9) is relatively rotatably sleeved on the outer periphery of the inner disc hub (18), and is positioned between the driven plate (7) and the damping plate (13) via a positioning assembly.
2. The adjustable force torque limiting vibration damper according to claim 1, characterized in that: The positioning assembly comprises a positioning ring I (10) and a positioning ring III (16) sleeved on an inner disk hub (18), wherein the positioning ring I (10) is arranged between a driven disk (7) and an outer disk hub (9) and is slotted with the driven disk (7), a disc spring II (17) is arranged between the positioning ring III (16) and the damping disk (13), a positioning ring II (14) is arranged on the outer periphery of the positioning ring III (16), and a disc spring I (15) is arranged between the positioning ring II (14) and the damping disk (13).
3. The adjustable force torque limiting vibration damper according to claim 2, characterized in that: Windows (31) are provided at corresponding positions of the driven disk (7), the outer disk hub (9) and the damping disk (13) for inserting springs I (19), so that the springs I (19) are evenly distributed along the circumferential direction of the damper sub-assembly (200), and a spring II (20) is arranged in each spring I (19); the outer disk hub (9) cooperates with the external spline of the inner disk hub (18) through a special-shaped hole arranged at the center, and an installation groove (32) is arranged between the special-shaped hole and the external spline, and the spring III (11) is inserted into the installation groove (32) through a spring seat (12).
4. The adjustable force torque limiting vibration damper according to claim 1, characterized in that: A fixing hole (25) is provided at the center of the boss (24); the adjusting screw (23) is pressed against the pressure plate cover (1) through a flat washer (22) and is connected to the fixing hole (25) after passing through the mounting hole (26).
5. The adjustable force torque limiting vibration damper according to claim 1, characterized in that: The inner edge of the mounting hole (26) protrudes downward to form a flange (27), so that one end of the adjusting spring (2) is sleeved on the boss (24) and the other end is sleeved on the flange (27).
6. The adjustable force torque limiting vibration damper according to claim 1, characterized in that: A plurality of ears (28) are evenly arranged along the outer periphery of the friction plate (3) and are used to be inserted into corresponding slots (29) provided on the inner wall of the pressure plate cover (1).
7. The adjustable force torque limiting vibration damper according to claim 1, characterized in that: The installation quantity of the regulating springs (2) is adjusted according to different torque limiting torques.
8. The adjustable force torque limiting vibration damper according to claim 1, characterized in that: The working length of the adjustment spring (2) is adjusted by screwing the adjustment screw (23), thereby adapting to different thicknesses of the shock absorber sub-assembly (200).
9. The adjustable force torque limiting vibration damper according to claim 1, characterized in that: The pressure plate cover (1) is provided with a connection hole (30) for connecting to the flywheel assembly, so that the friction plate (3) is pressed onto one of the friction plates (4), and the other friction plate (4) is pressed tightly onto the flywheel assembly.