CN219605895U - Device for limiting separation stroke of diaphragm spring of self-adjusting clutch - Google Patents

Abstract

The utility model discloses a device for limiting the separation stroke of a diaphragm spring of a self-adjusting clutch, which relates to the field of clutches and comprises a supporting ring, supporting nails, a limiting ring and a separation bearing, wherein the outer ring of the limiting ring is riveted on the inner side of a pressure plate cover through the supporting nails, so that the inner ring of the limiting ring is positioned between the pressure plate and the pressure plate cover, a plurality of supporting arms are connected between the inner ring and the outer ring, and gaps are arranged between the adjacent supporting arms; the diaphragm spring is supported on the pressure plate, and a separation finger of the diaphragm spring passes through the gap and enters between the pressure plate cover and the inner ring; the separating bearing penetrates through the pressure plate cover and is used for pushing the separating finger to enable the diaphragm spring to reciprocate between an initial position and a limiting position; the rod part of the supporting nail stretches into the inner side of the pressure plate cover, one end of the supporting ring is propped against the diaphragm spring, and the other end is propped against the lower edge of the supporting nail. According to the utility model, the limiting device is added to limit the separation stroke of the separation bearing when the diaphragm is separated, so that the stroke of the pedal after separation cannot exceed the maximum separation stroke of the clutch assembly.

Description

Device for limiting separation stroke of diaphragm spring of self-adjusting clutch

Technical Field

The utility model relates to the field of clutches, in particular to a device for limiting the separation stroke of a diaphragm spring of a self-adjusting clutch.

Background

In an automobile transmission system, a clutch is mainly used for transmitting and cutting off power generated by an engine so as to maintain normal running of a vehicle; whether the working performance of the clutch is safe and stable directly influences the starting, braking and running performance of the whole vehicle in the using process. With the continuous development of the automobile industry at home and abroad, the automobile manufacturing technology is more mature, the clutch is more compact and perfect in space and structure design, and the use requirement on the clutch is higher.

At present, many automobile manufacturers prefer to configure a self-adjusting clutch in an automobile transmission system to increase the driving comfort, and because a separation control system of a part of transmission systems is not lifted, and large friction force, oil path resistance and the like exist, the stroke after pedal separation is possibly caused to exceed the maximum separation stroke of a clutch assembly. This causes considerable hidden trouble to the normal use of the self-adjusting clutch, reducing the reliability of the whole vehicle.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide a device for limiting the separation stroke of a diaphragm spring of a self-adjusting clutch, wherein a limiting device is added to limit the separation stroke of a separation bearing when the diaphragms are separated. The clutch cover is suitable for a clutch cover with the strength increased by using an inner hole flanging, and can better prevent hidden danger caused by over-pushing of a separation stroke while increasing the strength. The automobile can provide a safe and comfortable environment for drivers and passengers, and thus the safety, balance and comfort of the automobile are greatly improved.

The utility model aims at being completed by the following technical scheme: the device comprises a supporting ring, supporting nails, a limiting ring and a release bearing, wherein the outer ring of the limiting ring is riveted on the inner side of the pressure plate cover through the supporting nails, so that the inner ring of the limiting ring is positioned between the pressure plate and the pressure plate cover, a plurality of supporting arms are connected between the inner ring and the outer ring, and gaps are arranged between the adjacent supporting arms; the diaphragm spring is supported on the pressure plate, and a separation finger of the diaphragm spring passes through the corresponding gap and enters between the pressure plate cover and the inner ring; the separating bearing penetrates through the pressure plate cover and is used for pushing the separating finger to enable the diaphragm spring to reciprocate between an initial position and a limiting position; the rod part of the supporting nail stretches into the inner side of the pressure plate cover, one end of the supporting ring is propped against the diaphragm spring, and the other end of the supporting ring is propped against the lower edge of the supporting nail; the backup ring is compressed between the diaphragm spring and the pressure plate cover.

As a further technical scheme, when the diaphragm spring is positioned at the limiting position, the lower end face of each separating finger abuts against the inner ring.

As a further technical scheme, grooves are formed in the lower end faces of the separation fingers, and an annular structure matched with the inner ring is formed between the grooves of the separation fingers.

As a further technical scheme, the supporting ring is installed on an installation rib arranged on the pressure plate cover through a spring.

As a further technical scheme, the transmission piece is riveted between the pressure plate and the pressure plate cover through rivets.

As a further technical scheme, a plurality of lugs are arranged on the outer ring, the positions of the lugs are in one-to-one correspondence with the supporting arms, a supporting hole is formed in each lug for a supporting nail to pass through, and the center of the supporting hole is located on the extension line of the supporting arm.

The beneficial effects of the utility model are as follows:

1. a limiting ring is additionally arranged between the pressure plate cover and the diaphragm spring and can be used for limiting the downward movement stroke of the diaphragm spring, so that the diaphragm spring can be ensured to reciprocate between an initial position and a limiting position, the maximum separation stroke can not be exceeded, and the clutch can be ensured to be safe and reliable in normal use;

2. the lower end surface of the separating finger is provided with a groove matched with the inner ring of the limiting ring, so that the separating finger can be smoothly guided to the limiting position, and meanwhile, the reliable support during limiting is ensured;

3. when spacing support, the pressure that the inner ring received is transmitted to outer loop (ear) by the support arm, and then is transmitted to the supporting nail, and pressure transmission is steady, limit structure is stable not fragile, is favorable to improving the life of clutch.

Drawings

FIG. 1 is a schematic diagram of a self-adjusting clutch according to the present utility model.

Fig. 2 is a cross-sectional view A-A of fig. 1.

Fig. 3 is a partially enlarged schematic view of region B in fig. 2.

Fig. 4 is a schematic view of the limiting stroke after the release bearing is assembled.

Fig. 5 is a schematic front view of a limiting ring according to the present utility model.

Fig. 6 is a schematic perspective view of a stop collar according to the present utility model.

Fig. 7 is a schematic perspective view of a diaphragm spring according to the present utility model.

Fig. 8 is a graph showing the relationship between the separation stroke and the separation force of the diaphragm spring in the present utility model.

Reference numerals illustrate: the pressure plate 1, the pressure plate cover 2, the diaphragm spring 3, the separating finger 31, the groove 32, the supporting ring 4, the supporting ring 5, the supporting nail 6, the rod part 61, the lower edge 62, the limiting ring 7, the outer ring 71, the supporting arm 72, the inner ring 73, the gap 74, the lug part 75, the supporting hole 76, the spring 8, the rivet 9, the transmission piece 10, the boss 11, the separating bearing 12 and the mounting rib 13.

Detailed Description

The utility model will be described in detail below with reference to the attached drawings:

examples: as shown in fig. 1 to 7, the device for limiting the release travel of the diaphragm spring of the self-adjusting clutch comprises a pressure plate 1, a pressure plate cover 2, a diaphragm spring 3, a release finger 31, a groove 32, a support ring 4, a support ring 5, a support pin 6, a rod portion 61, a lower edge 62, a limit ring 7, an outer ring 71, a support arm 72, an inner ring 73, a gap 74, an ear 75, a support hole 76, a spring 8, a rivet 9, a transmission plate 10, a boss 11, a release bearing 12 and a mounting rib 13.

Referring to fig. 2 and 3, a pressure plate cover 2 of the clutch is covered on a pressure plate 1, and a diaphragm spring 3 is arranged between the pressure plate 1 and the pressure plate cover 2. The outer ring 71 of the retainer 7 is swaged inside the platen cover 2 (i.e., on the side closer to the platen 1) by the support pins 6, with the inner ring 73 of the retainer 7 between the platen 1 and the platen cover 2. As shown in fig. 5, six (6 in this embodiment, or other number of support arms 72 are also possible) support arms 72 are connected between the inner ring 73 and the outer ring 71, each support arm 72 is uniformly distributed in the circumferential direction, and a gap 74 is provided between adjacent support arms 72. The lower end surface of the diaphragm spring 3 is pressed against the boss 11 of the pressure plate 1, and the separation finger 31 of the diaphragm spring 3 passes through the corresponding gap 74 and enters between the pressure plate cover 2 and the inner ring 73 (as shown in fig. 3). As shown in fig. 4, after the assembly of the real vehicle, the release bearing 12 passes through the inner hole of the pressure plate cover 2 and presses on the release finger 31, so as to push the release finger 31, so that the diaphragm spring 3 (the release finger 31) reciprocates between the initial position (i.e., the position shown by the solid line in fig. 4) and the limit position (i.e., the position shown by the broken line in fig. 4). When the diaphragm spring 3 is in the limit position, the lower end face of each of the separation fingers 31 abuts against the inner ring 73. Preferably, referring to fig. 7, grooves 32 are formed on the lower end surfaces of the separating fingers 31, and an annular structure (annular groove) is formed between the grooves 32 of each separating finger 31 and matches the contour of the inner ring 73.

As shown in fig. 3, the rod portion 61 of the support pin 6 extends into the inner side of the platen cover 2, one end of the support ring 5 abuts against the diaphragm spring 3, and the other end of the support ring 5 abuts against the lower edge 62 of the support pin 6; the backup ring 4 is pressed between the diaphragm spring 3 and the platen cover 2. Further, as shown in fig. 1 and 2, the spring 8 is mounted on the support ring 4, the other end of the spring 8 is sleeved on the mounting rib 13, and the mounting rib 13 is arranged on the pressure plate cover 2. The transmission plate 10 is riveted between the platen 1 and the platen cover 2 by rivets 9.

Referring to fig. 5, preferably, six lugs 75 are provided on the outer ring 71, the number and positions of the lugs 75 are in one-to-one correspondence with those of the supporting arms 72, a supporting hole 76 is provided on each lug 75, the upper end of the rod portion 61 of the supporting nail 6 rivets the supporting hole 76 and the pressure plate cover 2 together, and the center of the supporting hole 76 is located on the extension line of the corresponding supporting arm 72, so that the pressure is transferred more stably and reliably.

The working principle of the utility model is as follows:

a limiting device (limiting ring 7) is added to limit the separation stroke of the separation bearing 12 when the diaphragm spring 3 is separated. As shown in fig. 4, when the release bearing 12 pushes the clutch diaphragm spring 3 downward to the maximum release stroke, the diaphragm spring 3 (the release finger 31) will press against the inner ring 73 of the limiting ring 7, and cannot move downward, so as to realize limiting. As shown in fig. 8, when the clutch reaches the maximum release force, the change in the release force is gentle with the increase in the release stroke, and after the release point is reached (before the maximum release stroke), the release force does not continue to decrease, but rather increases, so that the pedal feel of the clutch is always kept comfortable.

It should be understood that equivalents and modifications to the technical scheme and the inventive concept of the present utility model should fall within the scope of the claims appended hereto.

Claims (6)

1. The utility model provides a device of restriction self-adjusting clutch diaphragm spring separation stroke, self-adjusting clutch includes pressure disk (1), lid dress pressure disk lid (2) on pressure disk (1) and sets up diaphragm spring (3) between pressure disk (1) and pressure disk lid (2), its characterized in that: the device comprises a supporting ring (4), a supporting ring (5), supporting nails (6), a limiting ring (7) and a release bearing (12), wherein an outer ring (71) of the limiting ring (7) is riveted on the inner side of a pressure plate cover (2) through the supporting nails (6), an inner ring (73) of the limiting ring (7) is positioned between the pressure plate (1) and the pressure plate cover (2), a plurality of supporting arms (72) are connected between the inner ring (73) and the outer ring (71), and gaps (74) are formed between adjacent supporting arms (72); the diaphragm spring (3) is supported on the pressure plate (1), and the separating finger (31) of the diaphragm spring (3) passes through the corresponding gap (74) and enters between the pressure plate cover (2) and the inner ring (73); the separating bearing (12) penetrates through the pressure plate cover (2) and is used for pushing the separating finger (31) to enable the diaphragm spring (3) to reciprocate between an initial position and a limit position; the rod part (61) of the supporting nail (6) stretches into the inner side of the pressure plate cover (2), one end of the supporting ring (5) is propped against the diaphragm spring (3), and the other end of the supporting ring (5) is propped against the lower edge (62) of the supporting nail (6); the support ring (4) is pressed between the diaphragm spring (3) and the pressure plate cover (2).

2. The device for limiting the disengagement travel of a diaphragm spring of a self-adjusting clutch according to claim 1, wherein: when the diaphragm spring (3) is positioned at the limit position, the lower end face of each separating finger (31) is abutted against the inner ring (73).

3. The device for limiting the disengagement travel of a diaphragm spring of a self-adjusting clutch according to claim 2, wherein: the lower end face of each separation finger (31) is provided with a groove (32), and an annular structure matched with the inner ring (73) is formed between the grooves (32) of each separation finger (31).

4. A device for limiting the release travel of a self-adjusting clutch diaphragm spring according to claim 3, wherein: the supporting ring (4) is arranged on a mounting rib (13) arranged on the pressure plate cover (2) through a spring (8).

5. The device for limiting the release travel of a self-adjusting clutch diaphragm spring according to claim 4, wherein: the transmission sheet (10) is riveted between the pressure plate (1) and the pressure plate cover (2) through rivets (9).

6. The device for limiting the release travel of a self-adjusting clutch diaphragm spring according to any one of claims 1 to 5, wherein: the outer ring (71) is provided with a plurality of lugs (75), the positions of the lugs (75) are in one-to-one correspondence with the supporting arms (72), each lug (75) is provided with a supporting hole (76) for a supporting nail (6) to pass through, and the center of the supporting hole (76) is positioned on an extension line of the supporting arm (72).