CN214367366U

CN214367366U - Clutch device

Info

Publication number: CN214367366U
Application number: CN202120479651.9U
Authority: CN
Inventors: 吴伟杰
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2021-03-05
Filing date: 2021-03-05
Publication date: 2021-10-08
Anticipated expiration: 2031-03-05

Abstract

The utility model discloses a clutch relates to vehicle technical field. The clutch comprises a flywheel, a driven plate, two groups of friction components and an output shaft. The flywheel is connected with a rotating shaft of the engine; a plurality of U-shaped through holes are formed in the driven disc at intervals along the circumferential direction, the driven disc is divided into a disc body and elastic pieces by the U-shaped through holes, and the elastic pieces are bent to protrude out of the plane of the disc body; the two groups of friction assemblies are oppositely arranged at two sides of the driven disc, the friction assembly at one side is pressed against the elastic sheet, and the flywheel can drive the driven disc to rotate through the friction assembly at one side close to the flywheel; the output shaft penetrates through the center of the driven disc, and the driven disc can drive the output shaft to rotate. The clutch enables the driven plate to have the effects of connection and vibration reduction by optimizing the structure of the driven plate, and a vibration reduction plate is not required to be installed, so that the space is saved, the thickness of a friction plate can be increased, the service life is prolonged, and the replacement frequency is reduced.

Description

Clutch device

Technical Field

The utility model relates to the technical field of vehicles, especially, relate to a clutch.

Background

Clutches are important components in vehicle drivelines for cutting off or transmitting power output from an engine to a transmission. The friction clutch transmits power by using friction force between the driving part and the driven part, the flywheel drives the friction plate to rotate by using the friction force, and the friction plate transmits the power to a rotating shaft of the transmission through the driven disc, so that the power transmission between the generator and the transmission is realized.

In the design process of the clutch, the size of a clutch driven plate and a clutch pressure plate is calculated in consideration of the requirement of the transmission torque when a friction plate works, so that the heat generated by the clutch can be conducted and dissipated through the clutch pressure plate while the torque is reliably transmitted, and the size of the clutch pressure plate is required to be not too small. Considering that the thickness of the friction plate is severely limited due to the fixed position of the clutch end cover, the thickness of the friction plate cannot be increased at will to prolong the service life of the friction plate, and frequent replacement of the friction plate increases the cost and reduces the user experience.

The clutch usually sets up a friction disc respectively in the both sides of connection pad and carries out work, in order to reduce the clutch pressure disk and exert the axial impact that great pressure's in-process produced to the friction disc, make the clutch work smoothly when combining, need set up one deck damping piece and be used for offsetting the impact, make the combination of clutch more gentle and agreeable. But this has also increased thickness, under the prerequisite that does not change other structures, can only reduce the thickness of friction disc, greatly reduced the life of friction disc.

In view of the above problems, a clutch needs to be developed to solve the problems of short service life and frequent replacement caused by the excessively thin friction plate.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a clutch, this clutch make the driven plate have the effect of connecting and damping through the structure of optimizing the driven plate, need not install the damping piece, save space to can increase the thickness of friction disc, increase of service life reduces and changes the frequency.

To achieve the purpose, the utility model adopts the following technical proposal:

a clutch, comprising:

the flywheel is connected with the rotating shaft of the engine;

the driven disc is provided with a plurality of U-shaped through holes at intervals along the circumferential direction, the driven disc is divided into a disc body and elastic pieces by the U-shaped through holes, and the elastic pieces are bent to protrude out of the plane of the disc body;

the two groups of friction components are oppositely arranged on two sides of the driven disc, the friction component on one side is pressed against the elastic sheet, and the flywheel can drive the driven disc to rotate through the friction component close to one side of the flywheel;

the output shaft penetrates through the center of the driven disc, and the driven disc can drive the output shaft to rotate.

Preferably, the two sets of friction assemblies are respectively fixed on two sides of the driven disc through rivets.

Preferably, the friction assembly comprises an annular friction disc disposed on and concentric with the driven disc.

Preferably, the friction assembly includes a plurality of friction plates, and the plurality of friction plates are circumferentially arranged in the axial direction of the driven plate.

Preferably, the method further comprises the following steps:

the connecting disc is sleeved on the output shaft and fixedly connected with the output shaft through a spline, and the connecting disc and the output shaft synchronously rotate;

and the driven disc can drive the connecting disc to rotate through the vibration damping piece.

Preferably, the damping piece is damping spring, be provided with first through-hole on the connection pad, be provided with the second through-hole on the driven plate, first through-hole with the second through-hole just unanimous to just the size, damping spring set up in first through-hole with in the second through-hole, just damping spring's both ends all butt in first through-hole with the second through-hole is followed two sides that connection pad circumference is relative.

Preferably, the thickness of the driven disc is 1.3 mm.

Preferably, the sum of the thicknesses available for wear of the two sets of said friction members is 4.7 mm.

Preferably, the device further comprises a pressing mechanism, wherein the pressing mechanism comprises:

the pressure plate is arranged on one side, far away from the flywheel, of the driven plate;

the driving assembly can drive the pressure plate to press the driven plate and the friction assembly to the flywheel.

Preferably, the flywheel further comprises a clutch cover fixedly connected with the flywheel, and the driving assembly comprises:

the diaphragm spring is disc-shaped and comprises a circular ring part and a plurality of pressing sheets arranged at intervals along the circumferential direction, and the pressing sheet is connected with the circular ring part;

and one ends of the supporting pieces are fixedly connected with the diaphragm spring along the circumferential direction of the diaphragm spring, and the other ends of the supporting pieces are arranged on the clutch cover.

The utility model has the advantages that:

the utility model provides a clutch. In the clutch, the driven disc is structurally improved, the driven disc is divided into the disc body and the elastic sheet by the U-shaped through hole, and the elastic sheet is bent to protrude out of the plane of the disc body to form the elastic structure. The friction assembly is abutted to the elastic sheet, a certain gap exists between the friction assembly and the disc body when the friction assembly is fixed, when the driven disc is pressed to the flywheel by the pressure plate, the elastic sheet performs certain buffering on the pressure of the pressure plate, and the effect of the vibration reduction sheet is achieved. The driven plate of the clutch is equivalent to the integration of the driven plate and the damping sheet in the prior art, the thickness is reduced, and the friction assembly can correspondingly increase the thickness. The service life of the clutch is prolonged, the sizes of the clutch pressure plate and the clutch end cover do not need to be reduced, and the torque transmission capacity, the heat dissipation capacity and other comprehensive performances of the clutch are not reduced. That is, the driven plate can directly replace the clutch driven plate and the damping plate in the prior art based on the prior clutch structure. By using the clutch, the replacement frequency of the friction assembly of the clutch can be reduced, the period of replacing the clutch by a user is prolonged, and the expenditure of labor cost and part purchase cost is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a clutch provided by the present invention;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1 in accordance with the present invention;

fig. 3 is a schematic structural diagram of a driven disc provided by the present invention;

fig. 4 is a schematic structural diagram of a diaphragm spring provided by the present invention.

In the figure:

1. a driven plate; 2. a friction assembly; 3. an output shaft; 4. riveting; 5. a connecting disc; 6. a vibration damping member; 7. a hold-down mechanism;

11. a U-shaped through hole; 12. a tray body; 13. a spring plate; 71. a platen; 72. a drive assembly; 73. a clutch cover;

721. a diaphragm spring; 722. a support member;

7211. a circular ring part; 7212. and (6) tabletting.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

The present embodiment provides a clutch. As shown in fig. 1 and 2, the clutch includes a flywheel, a driven plate 1, two sets of friction members 2, and an output shaft 3. The flywheel is connected with the engine rotating shaft. As shown in fig. 3, a plurality of U-shaped through holes 11 are circumferentially provided at intervals on the driven plate 1, the driven plate 1 is divided into a plate body 12 and elastic pieces 13 by the U-shaped through holes 11, and the elastic pieces 13 are bent to protrude out of the plane where the plate body 12 is located. Two sets of friction subassemblies 2 set up in the both sides of driven plate 1 relatively, and the friction subassembly 2 of one side wherein supports to press on shell fragment 13, and the flywheel can be through being close to the friction subassembly 2 drive driven plate 1 rotation of flywheel one side. The output shaft 3 passes through the center of the driven disc 1, and the driven disc 1 can drive the output shaft 3 to rotate.

The clutch improves the structure of the driven disc 1, a plurality of U-shaped through holes 11 are arranged on the driven disc 1 to divide the driven disc 1 into a disc body 12 and an elastic sheet 13, and then the elastic sheet 13 is bent. Two sets of friction disk 2 set up the both sides with driven plate 1 relatively, and the friction disk 2 that is located the convex one side of shell fragment 13 supports to press on shell fragment 13, remains certain clearance with disk body 12, is pressed to the flywheel and with the in-process of flywheel contact at driven plate 1, and the elasticity of shell fragment 13 can play certain cushioning effect to the pressure that friction disk 2 received, is equivalent to the damping fin among the prior art. Because the driven plate 1 of the clutch can play the roles of connection and vibration reduction at the same time, a vibration reduction sheet does not need to be arranged independently, and the thickness is obviously reduced compared with the driven plate 1 and the vibration reduction sheet in the prior art. On the premise of not changing other structures, the thickness of the friction component 2 can be correspondingly increased, namely, the wearable thickness is improved, the replacement frequency of the clutch friction component 2 is reduced, the period of replacing the clutch by a user is prolonged, and the expenditure of labor cost and part purchase cost is reduced.

Preferably, two sets of friction assemblies 2 are respectively fixedly arranged on two sides of the driven disc 1 through rivets 4. Rivet 4 connection structure is simple, and the maintenance of being convenient for can set up the counter bore on friction pack 2 to utilize rivet 4 to be fixed in driven plate 1 with friction pack 2 through the counter bore on, can not bulge friction pack 2's surface again when fixed friction pack 2, do not influence friction pack 2's normal work.

Preferably, the friction assembly 2 comprises an annular friction disc arranged on the driven disc 1 and concentric with the driven disc 1. The middle of the annular friction disc is provided with a through hole which can avoid the output shaft 3. And the annular structure makes the area of contact of friction subassembly 2 and flywheel great, and frictional force can distribute evenly on whole annular friction disk, reduces the speed of annular friction disk wearing and tearing, has improved life.

Because the annular friction disk is a whole friction disk, if the annular friction disk is worn seriously locally, only the whole annular friction disk can be replaced, and the maintenance cost is greatly increased. To solve this problem, the friction assembly 2 includes a plurality of friction plates that are circumferentially arranged in the axial direction of the driven plate 1. Every friction disc sets up on driven plate 1 through a set of rivet 4 respectively, if the condition of local wear serious or friction surface damage appears, can replace the friction disc that has a problem alone, greatly reduced the maintenance cost.

Preferably, the clutch further comprises a connecting disc 5 and a damping piece 6. The connecting disc 5 is sleeved on the output shaft 3 and fixedly connected with the output shaft 3 through a spline, and the connecting disc 5 and the output shaft 3 synchronously rotate. The driven disc 1 can drive the connecting disc 5 to rotate through the damping piece 6.

The driven disc 1 is connected with the connecting disc 5 through the vibration damper 6 so as to drive the connecting disc 5 to rotate, and the connecting disc 5 is connected with the output shaft 3 through a spline, so that the power transmission of an engine is realized. And because the power generation rotating speed is fast, the torque is very big, and the impact force is very big when the friction disc rubs with the flywheel and makes driven plate 1 rotate, if direct action on output shaft 3, easily lead to output shaft 3 or gearbox to damage. The vibration damping piece 6 can well solve the problem, the vibration damping piece 6 is preferentially acted when the driven disc 1 rotates, and the acting force is acted on the connecting disc 5 through the vibration damping piece 6, so that the impact force is greatly alleviated.

Preferably, the damping piece 6 is a damping spring, a first through hole is formed in the connecting disc 5, a second through hole is formed in the driven disc 1, the first through hole is opposite to the second through hole and is consistent in size, the damping spring is arranged in the first through hole and the second through hole, and two ends of the damping spring abut against two sides of the first through hole and the second through hole opposite to each other in the circumferential direction of the connecting disc 5.

The damper spring can relax the impact force by compression. When the driven disc 1 rotates, the second through hole pushes the vibration reduction spring to compress the vibration reduction spring, the connecting disc 5 is driven to rotate through the elastic force of the vibration reduction spring, the impact force of the driven disc 1 is relieved by the elastic force of the vibration reduction spring, the rotating speed of the connecting disc 5 is gradually increased under the action of the vibration reduction spring until the connecting disc and the driven disc 1 rotate synchronously, and the transmission of the power is achieved. When the engine is flamed out or the friction assembly 2 is separated from the flywheel, so that the rotating speed of the driven disc 1 is reduced, the shock absorption spring can reversely reduce the impact force of the connecting disc 5 on the driven disc 1.

In order to keep stress balance, a plurality of first through holes are formed in the connecting disc 5 in the circumferential direction, a plurality of second through holes are formed in the driven disc 1 in the circumferential direction, the first through holes and the second through holes correspond to each other one by one, and a damping spring is arranged in each pair of the first through holes and the second through holes.

Wherein, the thickness of the driven disc 1 is 1.3 mm. In the prior art, the total thickness of driven plate 1 and damping piece is 2.8mm, and driven plate 1 of this clutch has compared 1.5mm in prior art attenuate, that is to say that friction pack 2's thickness can increase 1.5mm, has improved life greatly.

Further, the two sets of friction packs 2 may have a total thickness for the working friction of 4.7 mm. In the prior art, the whole thickness of the friction plate which can be used for working friction is 3.2mm, and after the driven plate 1 of the clutch is used for replacing the driven plate 1 and the vibration reduction plate in the prior art, the thickness of the friction assembly 2 which can be used for working friction is increased to 4.7mm, namely the service life is prolonged by 47%.

Preferably, the clutch also comprises a hold-down mechanism 7. The pressing mechanism 7 comprises a pressure plate 71 and a driving assembly 72, wherein the pressure plate 71 is arranged on one side of the driven plate 1 far away from the flywheel. The driving assembly 72 can drive the pressure plate 71 to press the driven plate 1 and the friction assembly 2 against the flywheel. When power transmission is required, the pressure plate 71 is driven by the driving assembly 72 to press the driven plate 1 and the friction assembly 2 on the flywheel, so that the driven plate 1 and the friction assembly 2 rotate along with the flywheel. When power transmission is not required, the driving unit 72 drives the pressure plate 71 to separate from the driven plate 1 and the friction unit 2, so that the driven plate 1 and the friction unit 2 are restored to a state before contacting the flywheel under the elasticity of the driven plate 1 itself, and the transmission of power is stopped by separating from the flywheel.

Preferably, the clutch further includes a clutch cover 73, the clutch cover 73 is fixedly connected to the flywheel, and the driving assembly 72 includes a diaphragm spring 721 and a plurality of supporting members 722. As shown in fig. 4, the diaphragm spring 721 has a disk shape, and includes a circular ring portion 7211 and a plurality of pressing pieces 7212 arranged at intervals in the circumferential direction and facing the center of the diaphragm spring 721, and the pressing plate 71 is connected to the circular ring portion 7211. One end of the plurality of supporters 722 is fixedly connected to the diaphragm spring 721 in the circumferential direction of the diaphragm spring 721, and the other end of the plurality of supporters 722 is provided on the clutch cover 73.

The clutch cover 73 rotates in synchronization with the flywheel, and the diaphragm spring 721 and the pressure plate 71 are continuously rotated. The diaphragm spring 721 has the functions of a pressing spring and a release lever. The diaphragm spring 721 is fixed to the clutch cover 73 by a plurality of supporting members 722, and drives the pressure plate 71 by its own elastic force to press the driven plate 1 and the friction member 2 toward the flywheel, thereby realizing power transmission. When the pressing piece 7212 of the diaphragm spring 721 is pressed and bent, the annular portion 7211 of the diaphragm spring 721 moves in the opposite direction to the pressing piece 7212 with the supporting piece 722 as the shaft, and drives the pressure plate 71 to separate from the driven plate 1 and the friction assembly 2, so that the driven plate 1 and the friction assembly 2 separate from the flywheel, and the transmission of power is cut off. Since the diaphragm spring 721 is in contact with the pressure plate 71 over the entire circumference, the pressure distribution is uniform, the contact of the friction plates is good, and the wear is uniform. Since the diaphragm spring 721 is a rotationally symmetric component, it is well balanced and can stably provide a pressing force even at a high speed rotation.

Preferably, the plurality of supporters 722 are movable in a radial direction of the diaphragm spring 721 to change the position of the supporting point. An operator can adjust the pressing force of the pressure plate 71 according to the thickness of the friction plate due to abrasion by adjusting the position of the supporting point of the diaphragm spring 721, so that the lowest pressing force of the whole pressure plate 71 in the use range of the clutch friction plate is kept unchanged, and the reliable transmission of the torque is ensured.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. A clutch, comprising:

the flywheel is connected with the rotating shaft of the engine;

the driven disc (1) is provided with a plurality of U-shaped through holes (11) at intervals along the circumferential direction, the driven disc (1) is divided into a disc body (12) and elastic sheets (13) by the U-shaped through holes (11), and the elastic sheets (13) are bent to protrude out of the plane of the disc body (12);

the two groups of friction components (2) are arranged on two sides of the driven disc (1) relatively, the friction component (2) on one side is pressed against the elastic sheet (13), and the flywheel can drive the driven disc (1) to rotate through the friction component (2) close to one side of the flywheel;

the output shaft (3) penetrates through the center of the driven disc (1), and the driven disc (1) can drive the output shaft (3) to rotate.

2. Clutch according to claim 1, wherein the two sets of friction packs (2) are fixedly arranged on both sides of the driven plate (1) by rivets (4), respectively.

3. Clutch according to claim 1, wherein the friction pack (2) comprises an annular friction disc arranged on the driven plate (1) and concentric with the driven plate (1).

4. A clutch according to claim 1, characterized in that the friction pack (2) comprises a plurality of friction discs, which are arranged circumferentially in the axial direction of the driven disc (1).

5. The clutch of claim 1, further comprising:

the connecting disc (5) is sleeved on the output shaft (3) and fixedly connected with the output shaft (3) through a spline, and the connecting disc (5) and the output shaft (3) synchronously rotate;

the driven disc (1) can drive the connecting disc (5) to rotate through the vibration damper (6).

6. The clutch according to claim 5, characterized in that the damping member (6) is a damping spring, a first through hole is formed in the connecting disc (5), a second through hole is formed in the driven disc (1), the first through hole and the second through hole are opposite and have the same size, the damping spring is arranged in the first through hole and the second through hole, and two ends of the damping spring abut against two sides of the first through hole and the second through hole opposite to each other along the circumferential direction of the connecting disc (5).

7. Clutch according to claim 1, wherein the thickness of the driven plate (1) is 1.3 mm.

8. Clutch according to claim 1, wherein the two sets of friction packs (2) have a total thickness available for wear of 4.7mm, increased by 47% over the original 3.2 mm.

9. The clutch according to any one of claims 1 to 8, further comprising a pressing mechanism (7), the pressing mechanism (7) comprising:

the pressure plate (71), the pressure plate (71) is arranged on one side of the driven plate (1) far away from the flywheel;

a drive assembly (72), the drive assembly (72) being capable of driving the pressure plate (71) to press the driven plate (1) and the friction assembly (2) towards the flywheel.

10. The clutch according to claim 9, further comprising a clutch cover (73), the clutch cover (73) being fixedly connected to the flywheel, the drive assembly (72) comprising:

the diaphragm spring (721), the said diaphragm spring (721) is the disc-like, including the circular ring (7211) and arranging and facing to the multiple pressing plates (7212) of the centre of the said diaphragm spring (721) at intervals along the circumference, the said pressure plate (71) is connected with said circular ring (7211);

and a plurality of supporting members (722), one ends of the plurality of supporting members (722) are fixedly connected with the diaphragm spring (721) along the circumferential direction of the diaphragm spring (721), and the other ends of the plurality of supporting members (722) are arranged on the clutch cover (73).