CN213628577U

CN213628577U - Low-vibration clutch driven disc

Info

Publication number: CN213628577U
Application number: CN202022432299.1U
Authority: CN
Inventors: 曾小洋; 罗海茵; 陈俊帆; 田小渊; 陈小峰
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-07-06
Anticipated expiration: 2030-10-28

Abstract

The utility model discloses a clutch driven disc with low vibration, which mainly comprises a friction plate riveting piece, a main damping disc and an idle speed damping disc; the friction plate riveting piece is connected with the hub steel sheet through a rivet, the main damping disc comprises a front damping disc and a rear damping disc, the front damping disc and the rear damping disc are distributed on two sides of the hub steel sheet, and main damping springs are annularly arranged on the front damping disc and the rear damping disc; and an idle damping disc is arranged on the side surface of the rear damping disc, idle damping springs are arranged on the circumferential edge of the idle damping disc, and the idle damping springs and the main damping spring are positioned at the same radial position on the clutch driven disc. Through the design mode, the rigidity of the idle speed damping spring can be effectively improved, the idle speed damping angle can be increased, the rigidity of the main damping spring can be increased, the damping angle can be increased, the torque of the main damping spring can reach 2 times or more of the maximum torque of an engine, and the design of the damping springs in two levels can avoid the co-vibration caused by the parallel rings of the springs during overload.

Description

Low-vibration clutch driven disc

Technical Field

The utility model relates to an automobile clutch transmission technical field, concretely relates to clutch driven plate of low vibrations.

Background

The driven plate is used as an important component of the clutch, and transmits the torque of the engine to the transmission through friction conversion, so that the vibration and the impact of a transmission system are reduced, and the on-off action is completed. When a vehicle runs to a certain low speed/high speed section, the traditional clutch driven disc is easy to generate a phenomenon of common vibration, particularly the phenomenon occurs in a working condition frequently used by a user, and the driving comfort of the user is seriously influenced by the abnormal vibration sound caused by the phenomenon. Referring to fig. 1, a driven disc with an old structure transmits torque through friction, a friction plate mortise and tenon piece connected to a damping disc is repeatedly subjected to the action of friction force and torque, and a joint is easy to break or fall off, so that the driven disc is damaged; three damping springs (including an idle damping spring a, a main damping spring b and a three-level damping spring c) are arranged in the torsion damper, the damping springs are frequently subjected to rigid impact repeatedly, the metal spring seats of the old structures are large in rigidity and weak in buffering capacity, and the springs are easy to break and damage due to mechanical fatigue; the secondary and tertiary damping springs, which simultaneously bear the primary shock, may be subject to overload shock, resulting in failure of the springs due to over-compression and occurrence of spring-doubling to cause vibration abnormal sound.

The above background disclosure is only provided to aid in understanding the concepts and technical solutions of the present invention, and it does not necessarily belong to the prior art of the present patent application, and it should not be used to assess the novelty and inventive step of the present application without explicit evidence that the above content has been disclosed at the filing date of the present patent application.

SUMMERY OF THE UTILITY MODEL

The utility model provides a clutch driven plate of low vibrations to above-mentioned technical problem to solve damping spring and receive the overload impact and lead to the problem of spring fracture or elasticity inefficacy, avoid the spring to close the circle simultaneously and arouse vibrations to lead to abnormal sound, reduce the idle noise, improve the driving comfort of auttombilism.

In order to realize the purpose, the utility model adopts the following technical scheme:

a low-vibration clutch driven disc comprises a friction plate riveting piece, a main damping disc and an idle speed damping disc; the friction plate riveting piece comprises a wave plate, a left friction plate and a right friction plate which are distributed on two sides of the wave plate, and the left friction plate and the right friction plate are fixedly connected with the wave plate through rivets; the main damping disc comprises a front damping disc and a rear damping disc, the front damping disc and the rear damping disc are distributed on two sides of the hub steel sheet, and the front damping disc and the rear damping disc are connected with the hub through rivets; the wave plate of the friction plate riveting piece is connected with the hub steel sheet through a rivet, and the wave plate is connected to one side close to the front damping disc; windows are arranged on the circumferences of the front damping disc and the rear damping disc, and main damping springs are arranged in the windows; and an idle damping disc is arranged on the side surface of the rear damping disc, and idle damping springs are arranged on the circumferential edge of the idle damping disc.

Further, the idle damping disc comprises a front idle damping disc and a rear idle damping disc; the outer end parts of the front idle speed damping disc and the rear idle speed damping disc are oppositely bent, the bent part of the rear idle speed damping disc covers the bent part of the front idle speed damping disc, and the bent part of the rear idle speed damping disc covers the idle speed damping spring.

Further, the extending ends of the front damping disc and the rear damping disc are arranged in a corrugated structure; the inward-sunk wave crests in the corrugated structure mutually press the two side faces of the hub steel sheet.

Furthermore, damping fins are arranged on binding surfaces of the front damping disc, the rear damping disc and the hub.

Furthermore, an annular groove is formed between the friction plate riveting piece and the main damping disc, and the annular groove is separated by the wave plate and distributed on the left side and the right side of the wave plate.

Further, six windows for mounting the main damping springs are annularly arranged on the front damping disc and the rear damping disc.

Further, the diameter of the idle damping disc is smaller than the diameter of the circumference of the window where the main damping spring is located, and the idle damping spring and the main damping spring are located at the same radial position on the clutch driven disc.

Further, three idle damping springs are provided on the idle damping disc.

Further, the idle damper spring has a stiffness less than that of the main damper spring.

The utility model has the advantages of compared with the prior art:

(1) the utility model discloses the design of low vibration clutch driven plate can effectively avoid spring fracture, shock attenuation dish fracture and the cracked trouble of dish hub, ensures the travelling comfort and the security of whole car driving.

(2) Through the design of this technical scheme, improve the tertiary shock attenuation in the old structure of tradition at present into the second grade shock attenuation to the clutch driven plate of this proposal adopts second grade shock-absorbing structure: the first-level shock absorption reduces idle speed noise by increasing the rigidity of the idle speed shock absorption spring and increasing the idle speed shock absorption angle; the secondary damping can enable the torque of the main damping spring to reach 2 times or more of the maximum torque of the engine by increasing the rigidity of the main damping spring and increasing the damping angle, and the co-vibration caused by the parallel rings of the springs during overload is avoided. The clutch driven disc of the technical scheme adopts a method for improving the rigidity of the spring, improves the torque of the damping spring and solves the problem of the common vibration and abnormal sound under the common working condition.

Drawings

FIG. 1 is a prior art clutch driven plate;

FIG. 2 is a cross-sectional view of the driven plate of the low-shock clutch of the new design;

FIG. 3 is a top view of the driven plate of the low-shock clutch of the new design;

fig. 4 is a graph of clutch disc torque characteristics for the old configuration a and the new configuration B.

Reference numerals: 1. a friction plate riveting piece; 11. a right friction plate; 12. a left friction plate; 13. a wave plate; 2. a main damping disc; 21. a front damper disc; 22. a rear damper disc; 3. an idle damping disc; 31. a front idle damping disc; a rear idle damping disc; 4. a hub; 41. a hub steel sheet; 5. an idle damping spring; 6. a main damping spring; 7, riveting; 8. an annular groove; 9. a damping fin.

Detailed Description

In the following, an embodiment of the present invention will be described in detail with reference to the drawings, but it should be understood that the scope of the present invention is not limited by the embodiment. It should be understood that the directions "up", "down", "left" and "right" in the following embodiments of the present invention are all based on the position of the corresponding drawing. These directional terms are used for convenience of description only and do not represent limitations on the particular embodiments of the present invention. Unless otherwise specified, like reference numerals in the reference numerals refer to like structures.

The utility model relates to a clutch driven plate of low vibrations, as shown in figure 2, fig. 3, mainly include: the damping device comprises a friction plate riveting piece 1, a main damping disc 2 and an idle speed damping disc 3, wherein the friction plate riveting piece 1 comprises a wave plate 13, a left friction plate 12 and a right friction plate 11 which are distributed on two sides of the wave plate 13, and the left friction plate 12 and the right friction plate 11 are fixedly connected with the wave plate 13 through rivets 7; the main damping disc 2 comprises a front damping disc 21 and a rear damping disc 22, the front damping disc 21 and the rear damping disc 22 are distributed on two sides of a hub steel sheet 41, the front damping disc 21 and the rear damping disc 22 are connected with a hub 4 through rivets 7, and damping sheets 9 are arranged on binding surfaces of the front damping disc 21, the rear damping disc 22 and the hub 4, so that elastic force is attached between the front damping disc 21 and the rear damping disc 22, the elastic force of the driven disc in the axial direction is enhanced, the elastic fatigue strength is improved, and the service life of the driven disc is prolonged; the extending ends of the front damping disc 21 and the rear damping disc 22 are arranged to be of corrugated structures, so that the radial elasticity of the main damping disc 2 is improved; the inward wave crests in the corrugated structure mutually press the two side surfaces of the hub steel sheet 41, so that the hub steel sheet 41 is prevented from being axially bent; the wave plate 13 of the friction plate riveting piece 1 is connected with the hub steel sheet 41 through the rivet 7, the integrity of the friction plate riveting piece 1 and the hub 4 is enhanced, the torque and the torsion are uniformly stressed on the clutch driven disc, the deformation is avoided, the rotation inertia of the clutch driven disc is also improved, the wave plate 13 is connected to one side close to the front damping disc 21, and when the front damping disc 21 of the clutch driven disc is stressed, the stress area of the wave plate 13 and the hub steel sheet 41 is effectively increased, so that the pressure is uniformly dispersed; furthermore, an annular groove 8 is formed between the friction plate riveting piece 1 and the main damping disc 2, the annular groove 8 is separated by a wave plate 13 and distributed on the left side and the right side of the wave plate 13, so that abraded dust can be accumulated in the annular groove 8 and cannot be accumulated between the friction plate and the pressure plate, the friction coefficient is improved, and the service performance is improved; six windows are provided on the circumference of the front and rear damping discs 21, 22, in which the main damping springs 6 are arranged. The idle damping disc 3 is arranged on the side face of the rear damping disc 22, idle damping springs 5 are arranged on the circumferential edge of the idle damping disc 3, the diameter of the idle damping disc 3 is smaller than that of the circumference of a window where the main damping spring 6 is located, the idle damping springs 5 and the main damping spring 6 are located at the same radial position on the clutch driven disc, overlapping of installation spaces of the two springs is achieved, and the compactness of spring distribution and the elastic performance of the whole clutch driven disc are improved.

In particular, the idle damping disc 3 comprises a front idle damping disc 31 and a rear idle damping disc 32; the outer ends of the front idle damper disc 31 and the rear idle damper disc 32 are bent toward each other, the bent portion of the rear idle damper disc 32 covers the bent portion of the front idle damper disc 31, and the bent portion of the rear idle damper disc 32 covers the idle damper spring 5.

Preferably, the idle damper spring 5 has a stiffness smaller than that of the main damper spring 6.

Further, torque characteristic tests are respectively performed on clutch driven discs of the old structure and the new structure, and the experimental results are shown in fig. 4 (in fig. 4, the horizontal axis represents a damping angle or a torsion angle, the vertical axis represents torque borne by the driven disc, and the slope represents the rigidity of a damping spring): along with the increase of the damping angle, the torque borne by the driven disc is gradually increased; referring to a diagram a in fig. 4, in the old structure, due to the increase of the torque and the damping angle borne by the driven disc, the stiffness of the damping spring changes suddenly, namely, the stiffness is increased from the original small stiffness to the large stiffness, and the change easily causes the phenomena of automobile vibration, flutter or instability, and finally the spring is broken, so that the comfort and the safety of automobile driving are affected; referring to a diagram B in FIG. 4, the improved two-stage damping clutch driven disc has no change in the stiffness of the damping spring due to the increase in the damping angle and the torque applied to the driven disc, and the stiffness of the damping spring is always maintained at a constant value.

Through the design of this technical scheme, improve the tertiary shock attenuation in the old structure of tradition at present into the second grade shock attenuation to the clutch driven plate of this proposal adopts second grade shock-absorbing structure: the first-level shock absorption reduces idle speed noise by increasing the rigidity of the idle speed shock absorption spring 5 and increasing the idle speed shock absorption angle; the secondary damping can make the torque of the main damping spring reach 2 times or more of the maximum torque of the engine (see attached figure 4) by increasing the rigidity of the main damping spring 6 and increasing the damping angle, thereby avoiding the co-vibration caused by the parallel rings of the springs during overload.

The above-mentioned embodiments are only described in the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention.

Claims

1. A low-vibration clutch driven disc is characterized by comprising a friction plate riveting piece, a main damping disc and an idle speed damping disc; the friction plate riveting piece comprises a wave plate, a left friction plate and a right friction plate which are distributed on two sides of the wave plate, and the left friction plate and the right friction plate are fixedly connected with the wave plate through rivets; the main damping disc comprises a front damping disc and a rear damping disc, the front damping disc and the rear damping disc are distributed on two sides of the hub steel sheet, and the front damping disc and the rear damping disc are connected with the hub through rivets; the wave plate of the friction plate riveting piece is connected with the hub steel sheet through a rivet, and the wave plate is connected to one side close to the front damping disc; windows are arranged on the circumferences of the front damping disc and the rear damping disc, and main damping springs are arranged in the windows; and an idle damping disc is arranged on the side surface of the rear damping disc, and idle damping springs are arranged on the circumferential edge of the idle damping disc.

2. A low-vibration clutch driven plate as claimed in claim 1, wherein said idle damper disc includes a front idle damper disc and a rear idle damper disc; the outer end parts of the front idle speed damping disc and the rear idle speed damping disc are oppositely bent, the bent part of the rear idle speed damping disc covers the bent part of the front idle speed damping disc, and the bent part of the rear idle speed damping disc covers the idle speed damping spring.

3. A low-vibration clutch driven plate according to claim 1, wherein the extending ends of said front and rear damper plates are provided in a corrugated structure; the inward-sunk wave crests in the corrugated structure mutually press the two side faces of the hub steel sheet.

4. A low-vibration clutch driven plate according to claim 1, wherein damping plates are provided on abutting surfaces of the front damper disc, the rear damper disc and the hub.

5. The low-vibration clutch driven plate according to claim 1, wherein an annular groove is formed between the friction plate rivet and the main damper plate, and the annular groove is separated by the wave plate and is distributed on left and right sides of the wave plate.

6. A low-vibration clutch driven plate as defined in claim 1, wherein six windows for mounting the main damper springs are provided on the circumferences of said front damper plate and said rear damper plate.

7. A low vibration clutch driven plate as claimed in claim 1, wherein the diameter of the idle damping plate is smaller than the diameter of the circumference of the window in which the main damping spring is located, the idle damping spring being located at the same radial position on the clutch driven plate as the main damping spring.

8. A low vibration clutch driven plate as defined in claim 7, wherein there are three idle damping springs on the idle damping plate.

9. A low-vibration clutch driven plate as defined in claim 1, wherein the idle damper spring has a stiffness less than that of the main damper spring.