CN201050559Y - Automobile clutch automatically compensating abrasion of frictional disk - Google Patents

Abstract

The utility model relates to an automobile clutch which can automatically compensate the wearing of a friction plate. The clutch comprises a friction plate, a pressure plate, a diaphragm spring, a clutch cover and a friction plate automatic compensation wearing mechanism which consists of a lower adjusting ring, an upper adjusting ring, a compensating plate, a keeping reed, a lower adjusting ring acting spring, a compensating plate acting spring and a start locating device. The lower adjusting ring and the upper adjusting ring form a ring body through a screw thread or the matching of a jagged bevel on an end surface and are arranged between the pressure plate and the diaphragm spring. The diaphragm spring is pressed and leant on the upper adjusting ring. One end of the keeping reed is fixed on the pressure plate, and the other end is a free end which is pressed and leant at the top part of the start locating device. The bottom of the start locating device is fixed and arranged on the clutch cover. The compensating plate which changes along with the height of a circumferential direction section is arranged between the pressure plate and the free end of the keeping reed. The clutch can ensure that the axial position and the pressing force of the diaphragm spring of the clutch remain the same in the designed abrasion limit range of the friction plate, and ensure that performance for the clutch transferring a torquemoment keeps in the original design state.

Description

Automobile Clutch with Automatic Compensation for Friction Disc Wear

Technical field:

The utility model relates to an automobile component, in particular to a diaphragm spring type automobile clutch.

Background technique:

The automobile clutch is a part of the automobile, which is responsible for the transmission and cut-off of engine power. At present, known diaphragm spring type automobile clutch is made up of friction plate, pressure plate, diaphragm spring, clutch cover. During use, due to the wear of the friction plate, the diaphragm spring type automobile clutch will have the following problems:

1. Within the design wear limit range of the friction plate, according to the nonlinear elastic characteristics of the diaphragm spring, the pressing force of the diaphragm spring after the friction plate is worn is greater than the design working pressure when the friction plate is not worn, so the separation force of the separation clutch will decrease. Increased, decreased handling comfort.

2. When the friction plate is worn, the inclination of the diaphragm spring becomes smaller and the axial dimension becomes larger, so that the gap C of the clutch becomes smaller, and the inner end of the diaphragm spring may be in contact with the release bearing, so that the clutch can transmit torque When it is in a half-clutch state, the pressing force is insufficient and the torque transmission efficiency is reduced.

Utility model content:

The technical problem to be solved by the utility model is: to provide an automobile clutch capable of automatically compensating the wear of the friction plate, which can automatically compensate for the wear of the friction plate, so as to solve the above-mentioned problems existing in the existing diaphragm spring type automobile clutch.

The technical solution for solving the above-mentioned technical problems is: an automobile clutch that automatically compensates for friction plate wear, including friction plates, a pressure plate, a diaphragm spring, a clutch cover and an automatic compensation mechanism for friction plate wear, and the automatic compensation mechanism for friction plate wear It is composed of lower adjusting ring, upper adjusting ring, compensating plate, retaining reed, acting spring of lower adjusting ring, acting spring of compensating plate, and initial positioning device. The lower adjusting ring and the upper adjusting ring are composed of thread or serrated slope on the end face. A ring is installed between the pressure plate and the diaphragm spring, the diaphragm spring is pressed against the upper adjustment ring, one end of the reed is fixed on the pressure plate, and the other end is the free end through the upper adjustment ring. The positioning groove of the ring presses against the top of the initial positioning device; the bottom of the initial positioning device is fixedly installed on the clutch cover; a compensating sheet whose height varies along the circumferential section is installed between the pressure plate and the free end of the retaining reed.

Due to the adoption of the above structure, the utility model has the beneficial effects of: under the premise of adding a small number of parts to the existing diaphragm spring type automobile clutch, it is realized: (1) within the design wear limit range of the entire friction plate, the clutch friction The pressing force of the friction plate remains unchanged, and the operating comfort can be kept at the original design state; (2) Within the design wear limit range of the entire friction plate, the clutch clearance C remains unchanged, so as to ensure that the axial position of the diaphragm spring remains unchanged, so that the clutch The performance of transmitting torque can be kept at the original design state, and the efficiency of torque transmission will not be reduced.

Below, the technical features of the automobile clutch that automatically compensates for friction plate wear of the utility model will be further described in conjunction with the accompanying drawings and embodiments.

Description of drawings:

Fig. 1: the structure schematic diagram of the automobile clutch (removing the front partial view of the clutch cover) of the automatic compensation friction plate wear of the utility model;

Fig. 2: the structural representation (one of A-A sectional view of Fig. 1) of the automobile clutch of automatic compensation friction disc wear of embodiment one;

Fig. 3: the structural representation of the automobile clutch of the automatic compensation friction lining wear of embodiment two (the A-A sectional view two of Fig. 1);

Figure 4: Schematic diagram of the cooperation of the upper and lower adjustment rings of the mechanism for automatically compensating for friction plate wear in Embodiment 2.

In Figures 1 to 4:

1-friction plate, 2-pressure plate, Q-annular groove on the pressure plate for installing the upper and lower adjusting rings, P-arc groove on the pressure plate for installing the compensation plate, 3-acting spring of the lower adjusting ring, 4-lower adjustment ring, 5-upper adjustment ring, O-circumferential positioning groove on the upper adjustment ring, 6-initial positioning device, 7-holding reed, 8-compensation sheet, 9-clutch cover, 10-compensation sheet Action spring, 11-diaphragm spring, 12-release bearing, 13-holding the fixing screw at the fixed end of the reed;

λ is the wear amount of the friction plate, and C is the clutch clearance.

Detailed ways:

Embodiment one:

An automobile clutch that automatically compensates friction plate wear, including friction plate 1, pressure plate 2, diaphragm spring 11, clutch cover 9 and an automatic compensation friction plate wear mechanism, the automatic friction plate wear compensation mechanism consists of a lower adjustment ring 4 , the upper adjustment ring 5, the compensation plate 8, the retaining reed 7, the lower adjustment ring action spring 3, the compensation plate action spring 10, and the initial positioning device 6. There is an annular groove Q on the pressure plate 2, and the upper part of the lower adjustment ring 4 The lower part of the upper adjustment ring 5 is threaded to form an annular body whose ring width is slightly smaller than the width of the annular groove Q, and is installed between the annular groove Q of the pressure plate and the diaphragm spring 11. The lower adjustment ring The lower end of 4 bears against the bottom of the annular groove Q; the upper end of the upper adjustment ring 5 leans against the diaphragm spring 11; one end of the retaining reed 7 is fixed on the pressure plate 2 through the fixing screw 13, and the other end is free. The end passes through the positioning groove O of the upper adjustment ring and presses against the top of the initial positioning device 6; the bottom of the initial positioning device 6 with two right-angle bends is fixed on the clutch cover 9; the arc on the pressure plate 2 Between the groove P and the free end of the retaining reed 7, a compensating piece 8 (see Fig. 1 and Fig. 2 ) whose section height varies along the circumferential direction is installed.

Embodiment two:

An automobile clutch that automatically compensates for friction plate wear, its basic structure is the same as that of Embodiment 1, the difference is that in the automatic compensation friction plate wear mechanism, the upper end surface of the lower adjustment ring 4 and the lower end surface of the upper adjustment ring 5 They are saw-toothed slopes respectively (see Figure 4). The lower and upper adjustment rings cooperate with each other to form a ring body through the saw-toothed slopes on the end faces. The lower end of the lower adjustment ring bears against the bottom of the annular groove; the upper end of the upper adjustment ring rests Under the diaphragm spring (see Fig. 1, Fig. 3). During operation, when the lower adjusting ring 4 rotates in the circumferential direction, the upper adjusting ring 5 moves axially to the right (that is, leaves the engine) by relying on the serrated slope.

Working principle and working process:

Taking Embodiment 1 as an example, after the wear value of the friction plate 1 reaches λ, the pressure plate 2 moves to the left along the axial direction by the λ value (that is, close to the engine), and a new gap λ is added between the pressure plate 2 and the free end of the retaining reed value, the compensation sheet 8 moves along the arc-shaped groove P on the pressure plate 2 under the action of the compensation sheet action spring 10, and compensates the gap lambda value by changing the height of the section along the circumference; when the clutch is disengaged, the outer end of the diaphragm spring 11 Move to the right (that is, leave the engine) to leave the upper adjustment ring 5, the pressing force applied to the upper adjustment ring 5 is eliminated, and the lower adjustment ring 4 rotates along the circumference under the action of the lower adjustment ring acting spring 3, while the upper adjustment ring 5 and The lower adjustment rings 4 are threaded, and the upper adjustment ring 5 has a circumferential positioning groove O, which is locked by the free end of the retaining reed 7 and cannot rotate. Therefore, the upper adjustment ring 5 moves axially to the right by λ value (i.e. away from the engine), make up the friction plate wear amount λ value, so that the outer end of the diaphragm spring 11 is pressed against the upper adjustment ring 5 at the original axial position again when the clutch is separated, the compensation process is completed, and the diaphragm spring 11 Restore to the axial position and state before the friction plate 1 is worn, and the value of C remains unchanged, so that the torque transmission performance of the clutch remains in the original design state, and it is ensured that the diaphragm spring will not be compressed due to the wear of the friction plate during the use of the automobile clutch. Tension changes.

As for the structure described in Embodiment 2, its working principle and working process are similar, the difference is that when working, the lower adjusting ring 4 moves the upper adjusting ring 5 to the right by relying on the saw-toothed slope when the lower adjusting ring 4 rotates along the circumferential direction.

Claims (3)

1. the automobile clutch of an automatic friction compensation pad wear, comprise friction plate, platen, diaphragm spring, clutch cover and friction disc wear compensation mechanism, it is characterized in that: described friction disc wear compensation mechanism by the downward modulation domain, the automatic friction compensation pad wear mechanism that raises that the domain, compensating plate, maintenance reed, downward modulation domain effect spring, compensating plate effect spring, inceptive positioning device form, the downward modulation domain, raise the domain cooperate a ring bodies of composition by the flexuose inclined-plane on screw thread or the end face and be contained in platen and diaphragm spring between; Diaphragm spring is pressed against and raises on the domain; Keeping an end of reed is that fixed end is fixed on the platen, and the other end is that the circumferential locating slot that free end passes on the rise domain is pressed against the inceptive positioning device top; The inceptive positioning device bottom is fixedly mounted on the clutch cover; Between arc groove on the platen and maintenance reed free end, the compensating plate that a circumferential section height in edge changes is installed.

2. the automobile clutch of automatic friction compensation pad wear according to claim 1, it is characterized in that: an annular groove is arranged on the described platen, its annulus width is formed than the smaller ring bodies of annular groove width and be contained between the annular groove and diaphragm spring of platen in the top of the downward modulation domain and the bottom of raising the domain by being threaded, the annular groove bottom is withstood in the lower end of the downward modulation domain; The upper end of raising the domain leans under diaphragm spring.

3. the automobile clutch of automatic friction compensation pad wear according to claim 1, it is characterized in that: an annular groove is arranged on the described platen, the lower end surface of the upper-end surface of the downward modulation domain, the rise domain is respectively the flexuose inclined-plane, the flexuose inclined-plane of upper and lower adjustment ring by end face cooperatively interacts and forms a ring bodies, the annular groove bottom is withstood in the lower end of the downward modulation domain, and the upper end of raising the domain leans under diaphragm spring.

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