Clutch driven plate with high coaxiality error tolerance and pre-damping

Abstract

The utility model discloses a high coaxiality error tolerance clutch driven plate with pre -damping relates to clutch field, including hub II, compression spring, hub I and the spring sheet of conjoined body, the outer ring of hub I is established outside key groove, the inner ring of hub II is established inside key groove, and outside key groove and inside key groove pass through the clearance cooperation, realizes the coaxiality error tolerance and torque transmission between hub I and hub II, establishes at least one compression spring groove I on outside key groove, and establishes compression spring groove II one to one with compression spring groove I on inside key groove, and compression spring is constantly forced between corresponding compression spring groove I and compression spring groove II, and pre -damping when twisting, the spring sheet of conjoined body rivets in one side of hub II, and sets up the friction plate at both sides of spring sheet of conjoined body, and two friction plates are riveted fixed with spring sheet of conjoined body. The utility model discloses driven plate and gearbox input shaft under the condition that the coaxiality error is bigger, and hub I and hub II occur flexible axial deflection to be compatible with the coaxiality error.

Description

Technical Field

[0001] This utility model relates to the field of clutches, specifically to a clutch driven plate with pre-damping and high coaxiality error tolerance. Background Technology

[0002] The driven plate of a car clutch is one of the key components in the car's transmission system, playing a crucial role in shifting gears or starting the vehicle.

[0003] Existing driven plate designs often fail to adequately account for coaxiality errors that may occur between the spline and the gearbox input shaft during actual assembly and use. When significant coaxiality errors exist, the fit between the driven plate and the input shaft becomes unstable, leading to uneven power transmission and incomplete clutch disengagement. This results in excessive wear, vibration, and noise on the driven plate, severely impacting vehicle driving comfort and clutch lifespan.

[0004] Furthermore, existing driven discs have limitations in handling vibrations and shocks caused by coaxiality errors. These vibrations and shocks not only degrade the driving experience but can also lead to premature fatigue failure of the driven disc and related components, increasing maintenance costs and replacement frequency. At the same time, existing vibration damping designs often fail to effectively address the complex dynamic problems caused by coaxiality errors, making it difficult to meet the high reliability and long lifespan requirements of modern automobiles.

[0005] Therefore, developing a clutch driven plate that can effectively adapt to large coaxiality errors and has pre-damping function is of great practical significance for improving clutch performance and overall vehicle quality. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a clutch driven plate with pre-damping and high coaxiality error tolerance. By adding limiting designs on both sides of hub I and elastic designs on both sides of hub II, along with disc springs and shaped bending, this invention allows hub I and hub II to flexibly deflect to accommodate coaxiality errors when the driven plate and gearbox input shaft have significant coaxiality errors. A double compression spring design between hub I and hub II achieves pre-damping of the clutch driven plate, thus mitigating vehicle resonance and abnormal noise to some extent. The integrated spring sheet not only connects and fixes the friction plate and hub II but also features pre-tensioning shaped bending, simplifying components and making the assembly structure and assembly more streamlined.

[0007] The purpose of this utility model is achieved through the following technical solution: This clutch driven plate with pre-damping and high coaxiality error tolerance includes a disc hub II, a pressure spring, a disc hub I, and an integrated spring plate. An outer keyway is formed on the outer ring of the disc hub I, and an inner keyway is formed on the inner ring of the disc hub II. The outer keyway and the inner keyway are fitted with a clearance to achieve coaxiality error tolerance and torque transmission between the disc hub I and the disc hub II. At least one pressure spring groove I is formed on the outer keyway, and pressure spring grooves II are formed on the inner keyway corresponding to the pressure spring grooves I. The pressure spring is constantly stressed between the corresponding pressure spring grooves I and II, thereby achieving pre-damping during torsion. The integrated spring plate is riveted to one side of the disc hub II, and friction plates are provided on both sides of the integrated spring plate. The two friction plates are riveted and fixed to the integrated spring plate.

[0008] As a further technical solution, slots I and II are opened on the outer wall of hub I. The inner ring of the integrated spring sheet is processed into a shaped bend, which is inserted into slot I and applies axial preload to hub I. The inner ring of the disc spring is inserted into slot II, and the outer ring of the disc spring abuts against hub II, so that hub II is simultaneously subjected to the pressure of the integrated spring sheet and the disc spring.

[0009] As a further technical solution, several riveting holes are opened on the outer ring of disc hub II along the circumferential direction for installing rivets to rivet the integrated spring sheet onto disc hub II.

[0010] As a further technical solution, several round holes are distributed on the outer side of the integrated spring sheet for installing spring sheet rivets to rivet the friction plate onto the integrated spring sheet.

[0011] As a further technical solution, a compression spring seat is provided on the compression spring groove I for installing the compression spring.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. Hub I has slots I and II, which limit the preload of the integrated spring plate and the disc spring. Hub I has an outer keyway that can clearance-fit the inner keyway on hub II. This allows the clutch assembly to properly engage and disengage when the gearbox input shaft and clutch assembly are not aligned during operation. The compression and bending of the integrated spring plate in hub I, along with the relative tilting of the disc spring and hub II, largely resolves the coaxiality error tolerance. This stabilizes the fit between the driven plate and the input shaft, alleviating problems such as excessive wear, vibration, and noise caused by uneven power transmission and incomplete clutch disengagement, thus improving driving comfort and clutch lifespan.

[0014] 2. The compression spring groove of disc hub II can be used with the compression spring groove of disc hub I to limit the compression spring. While transmitting torque, it can also realize the normal operation of pre-damping, which can solve the resonance and abnormal noise of the whole vehicle to a certain extent and meet the needs of modern automobiles for high reliability and long service life.

[0015] 3. The integrated spring sheet can not only connect and fix the friction plate and disc hub II, but also has a pre-tightening function in the forming and bending process, which can simplify the parts and make the assembly structure and assembly more simplified. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0017] Figure 2 for Figure 1 PP sectional view.

[0018] Figure 3 This is a schematic diagram of the main structure of this utility model (hidden disc spring).

[0019] Figure 4 This is a schematic diagram of the integrated spring sheet in this utility model.

[0020] Figure 5 This is a schematic diagram of the structure of the hub I in this utility model.

[0021] Figure 6 for Figure 5 AA sectional view.

[0022] Figure 7 This is a schematic diagram of the structure of the disc hub II in this utility model.

[0023] Explanation of reference numerals in the attached drawings: Friction plate 1, Rivet 2, Disc hub II 3, Compression spring 4, Disc hub I 5, Disc spring 6, Integrated spring plate 7, Spring plate rivet 8, Compression spring seat 9, Forming bend 10, Groove I 11, Groove II 12, Round hole 13, Inner keyway 14, Outer keyway 15, Riveting hole 16, Compression spring groove I 17, Compression spring groove II 18. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings:

[0025] Example: As attached Figures 1-7 As shown, this clutch driven plate with high coaxiality error tolerance and pre-damping includes a friction plate 1, a rivet 2, a disc hub II 3, a compression spring 4, a disc hub I 5, a disc spring 6, an integrated spring plate 7, a spring plate rivet 8, a compression spring seat 9, a forming bend 10, a slot I 11, a slot II 12, a round hole 13, an inner keyway 14, an outer keyway 15, a riveting hole 16, a compression spring groove I 17, and a compression spring groove II 18.

[0026] Reference Appendix Figure 2 , 57. An outer keyway 15 (as an external spline) is formed on the outer ring of hub I5, and an inner keyway 14 (as an internal spline) is formed on the inner ring of hub II3. The outer keyway 15 and the inner keyway 14 are fitted with a clearance (e.g., Figure 3 As shown in the figure, the coaxiality error tolerance between hub I5 and hub II3 can be achieved, and the torque can also be transmitted between them due to the spline fit.

[0027] like Figure 3 , 5 As shown, two compression spring grooves I17 are opened on the outer keyway 15, and two compression spring grooves II18 are opened on the inner keyway 14 corresponding to the compression spring grooves I17. At the same time, a compression spring seat 9 is provided on the compression spring groove I17, and the compression spring 4 is installed on the compression spring seat 9, so that the compression spring 4 is constantly subjected to force between the corresponding compression spring grooves I17 and II18, thereby realizing the function of pre-damping during torsion.

[0028] like Figure 2 As shown, the integrated spring plate 7 is riveted to one side of the disc hub II 3. A friction plate 1 is provided on both sides of the integrated spring plate 7, and the two friction plates 1 are riveted and fixed to the integrated spring plate 7. Preferably, as shown... Figure 7 As shown, several riveting holes 16 are made along the circumferential direction on the outer ring of disc hub II3. Rivets 2 are installed on the riveting holes 16 to rivet the integrated spring sheet 7 to disc hub II3. (See attached diagram) Figure 4 A plurality of round holes 13 are distributed on the outer side of the integrated spring plate 7, and spring plate rivets 8 are installed on the round holes 13 to rivet the friction plate 1 onto the integrated spring plate 7. Preferably, the integrated spring plate 7 is made of 65Mn material.

[0029] Further, see attached document. Figure 2 , 5 6. Grooves I11 and II12 are made on the outer wall (left and right sides) of the hub I5 as limiting structures. Figure 6 The left side is slot I11, and the right side is slot II12. Meanwhile, as... Figure 4 As shown, a shaped bend 10 is machined into the inner ring of the integrated spring plate 7. The shaped bend 10 is inserted into the slot I11, and an axial preload is applied to the disc hub I5 (slot I11). The inner ring of the disc spring 6 is inserted into the slot II12, and the outer ring of the disc spring 6 abuts against the disc hub II3, so that the disc hub II3 is simultaneously subjected to the pressure of the integrated spring plate 7 and the disc spring 6. The disc hub I5 compresses the shaped bend 10 of the integrated spring plate 7 and the disc spring 6, causing them to tilt, thereby enabling the clutch assembly to engage and disengage normally.

[0030] The working process of this utility model:

[0031] In actual assembly and use, the driven disc spline and the gearbox input shaft are installed together. When a coaxiality error occurs, the gearbox input shaft is coaxial with disc hub I5, compressing the formed bend 10 and disc spring 6 on the driven disc's integrated spring plate 7, and then tilting relative to disc hub II3. Because there is a gap between the outer keyway 15 of disc hub I5 and the inner keyway 14 of disc hub II3, the two can achieve coaxiality tolerance and transmit torque normally, and the clutch assembly can engage and disengage normally. Power transmission is uniform and prevents incomplete clutch disengagement, reducing excessive wear, vibration, and noise of the driven disc, improving vehicle driving comfort and clutch life.

[0032] At the same time, regardless of whether there is a coaxiality error between the driven disc and the gearbox input shaft, the compression spring groove II18 of disc hub II3 will always limit the compression spring 4 with the compression spring groove I17 of disc hub I5. While transmitting torque, it can realize the normal operation of pre-damping, which can solve the resonance and abnormal noise of the whole vehicle to a certain extent and meet the modern automobile's requirements for high reliability and long service life.

[0033] 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 clutch driven plate with pre-damping and high coaxiality error tolerance, characterized in that: The device includes a hub II (3), a compression spring (4), a hub I (5), and a spring plate (7). The outer ring of the hub I (5) has an outer keyway (15), and the inner ring of the hub II (3) has an inner keyway (14). The outer keyway (15) and the inner keyway (14) are fitted with a clearance to achieve the coaxiality error tolerance and torque transmission between the hub I (5) and the hub II (3). At least one compression spring groove I is formed on the outer keyway (15). (17), and spring grooves II (18) are opened on the inner keyway (14) corresponding to spring groove I (17). The spring (4) is constantly subjected to the corresponding spring groove I (17) and spring groove II (18), so as to achieve pre-damping when torsion; the integrated spring plate (7) is riveted to one side of the hub II (3), and friction plates (1) are provided on both sides of the integrated spring plate (7). The two friction plates (1) are riveted and fixed to the integrated spring plate (7); The outer wall of the hub I (5) has slots I (11) and II (12). The inner ring of the integrated spring sheet (7) is processed into a shaped bend (10). The shaped bend (10) is inserted into slot I (11) and applies axial preload to the hub I (5). The inner ring of the disc spring (6) is inserted into slot II (12). The outer ring of the disc spring (6) abuts against the hub II (3), so that the hub II (3) is simultaneously subjected to the pressure of the integrated spring sheet (7) and the disc spring (6).

2. The clutch driven plate with pre-damped high coaxiality error tolerance of claim 1, wherein: The outer ring of the hub II (3) has several rivet holes (16) along the circumferential direction for installing rivets (2) to rivet the integrated spring sheet (7) onto the hub II (3).

3. The clutch driven plate with pre-damped high coaxiality error tolerance of claim 1, wherein: The outer side of the integrated spring sheet (7) has several round holes (13) for installing spring sheet rivets (8) to rivet the friction sheet (1) onto the integrated spring sheet (7).

4. The clutch driven plate with pre-damped high coaxiality error tolerance of claim 1, wherein: The compression spring groove I (17) is provided with a compression spring seat (9) for installing the compression spring (4).

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