KR101202908B1

KR101202908B1 - Double dry clutch

Info

Publication number: KR101202908B1
Application number: KR1020100083907A
Authority: KR
Inventors: 강석민; 김병관
Original assignee: 주식회사평화발레오
Priority date: 2010-08-30
Filing date: 2010-08-30
Publication date: 2012-11-19
Also published as: KR20120020341A

Abstract

The present invention relates to a dry double clutch, comprising: a clutch plate (11) of a leaf form interposed between an intermediate plate (5) and a first pressure plate (7); A first driving plate 13 having a hollow truncated cone shape coupled to an inner circumference of the clutch plate 11 to form a body; And a first clutch disc (3) formed of a first hub (15) mounted on an inner circumference of the opening (51) of the first drive plate (13), wherein the first clutch disc (3) comprises: The clutch disc 3 is supported on the inner surfaces of the first drive plate 13 and the first hub 15 facing the transmission, so that the boundary between the first drive plate 13 and the first hub 15 is supported. A stopper ring 21 surrounding the portion 19; It is supported on the outer surface of the first drive plate 13 and the first hub 15 facing the engine and coupled with the stopper ring 21 facing each other with the first drive plate 13 interposed therebetween. A retainer ring 23 surrounding the boundary portion 19; An elastic washer (25) interposed between the first driving plate (13) and the inner surface of the first hub (15) and the stopper ring (21) to elastically support the first hub (15); Characterized in that it has an assembly structure consisting of a stopper by reducing the axial vibration transmitted from the first hub to the stopper when shifting by the elastic washer interposed between the stopper and the first drive plate and the first hub It is possible to prevent the degradation of durability.

Description

Double dry clutch {Double dry clutch}

The present invention relates to a dry double clutch, and more particularly, to a dry double clutch, which is used in a double clutch transmission (DCT) of a vehicle and the like, and which improves axial shock absorbing performance and assembly of a clutch disc involved in power interruption. .

In general, a double clutch transmission (Double Clutch T / M) in which two shafts are present requires the use of a double clutch with two clutch discs in order to transfer power from the engine. Such a double clutch requires two clutches, the gear system is also operated dually, and the dual shaft is changed every time the gear is shifted one by one, so the speed of change is fast and the fuel efficiency is also helpful.

In particular, the dry double clutch (Dry Double Clutch), unlike the conventional wet double clutch (Wet Double Clutch) does not use oil, and transmits the power of the engine to the transmission by friction of the clutch disk and the pressure plate. The dry double clutch is divided into a set double clutch 102 and a damper flywheel 103, as shown by reference numeral 101 in FIG.

Among these, the set double clutch 102 is the center plate 105 is coupled by the connecting plate 107 and the connecting rivet 108, the center plate 105 is the first pressure plate 109 and the second pressure plate ( 111 allows the first and second clutch discs 113 and 115 to be compressed and rotated. The first clutch disc 113 is positioned on the engine side of the center plate 105 through the first hub 117, and the transmission inner input shaft 119 is coupled to the first hub 117. The second clutch disc 115 is positioned on the transmission side of the center plate 105 through the second hub 121, and the transmission outer input shaft is coupled to the second hub 121.

At this time, the first clutch disk 113 is the first drive plate 123 and the first hub 117 as shown in Figure 2, the stopper ring 125, retainer ring 127, and the snap ring 129 As shown in FIG. 1, the stopper ring 125 and the retainer ring 127 are coupled to each other by an assembly structure formed of a first driving plate by a rivet 131 penetrating the first driving plate 123. 123, the first hub 117 is prevented from coming off the first driving plate 123.

However, since the stopper ring 125 supporting the first hub 117 is in direct contact with the first hub 117 as described above, the vibration generated in the axial direction of the first hub 117 at the time of shifting is stopped as it is. Since the transfer to the ring 125, there was a problem that the durability of the stopper ring 125 is lowered.

In addition, when assembling or releasing the dry double clutch, the first hub 117 that is assembled or disassembled from the first driving plate 123 may impact the stopper ring 125, and such an impact is repeated when the assembly disassembly is repeated. Due to this, damage to the stopper ring 125 may reduce the durability of the stopper ring 125 and may cause inconvenience in assembly work.

The present invention has been made to solve the above-mentioned conventional problems, by improving the buffering performance for the first hub of the assembly structure for coupling the first hub to the first drive plate of the first clutch disk, assembling structure as described above In particular, the purpose is to improve durability and assembly of the stopper ring.

In order to achieve the above object, the present invention is interposed between the intermediate plate and the first pressure plate is a leaf plate type clutch plate which is in contact with or separated from the intermediate plate and the first pressure plate through a facing; A first drive plate in the form of a hollow truncated cone coupled to the inner circumference of the clutch plate to form a body; And a first hub mounted to an inner circumference of the opening of the first driving plate, the first hub axially supporting the clutch plate and the first driving plate on an inner input shaft of the transmission. The first clutch disc includes: a stopper ring supported on the inner surfaces of the first driving plate and the first hub facing the transmission and surrounding a boundary between the first driving plate and the first hub; A retainer ring supported on the outer surface of the first drive plate and the first hub facing the engine and coupled to the stopper ring facing each other with the first drive plate interposed therebetween to surround the boundary; An elastic washer interposed between the first driving plate and the inner surface of the first hub and the stopper ring to elastically support the first hub; And a snap ring interposed between the retainer ring and the outer surface of the first driving plate and the first hub to prevent separation of the first hub from an opening of the first driving plate. It provides a dry double clutch having a.

In addition, it is preferable to further include.

In addition, the elastic washer has an annular body inclined so that the inner circumference protrudes toward the engine rather than the outer circumference, and the stopper ring is formed along the inner circumference to form a recessed seat recessed inward toward the transmission to seat the elastic washer. It is preferable that it is done.

In addition, the elastic washer is preferably a plurality of engaging grooves are cut in the circumferential direction on the outer periphery.

In addition, the stopper ring is preferably caught by the locking groove of the elastic washer at least one locking means for preventing the relative rotation of the elastic washer protrudes on the seating sheet.

In addition, the stopper ring has one or more locking projections protrude radially inward from the body to be lifted from the seating sheet by a height difference from the seating sheet, thereby catching the locking groove of the elastic washer to prevent relative rotation of the elastic washer. It is desirable to do so.

Therefore, according to the dry double clutch of the present invention, by interposing an elastic washer between the stopper ring and the first drive plate and the first hub forming an assembly structure for coupling the first drive plate and the first hub of the first clutch disc, Since the axial vibration transmitted to the stopper through the first hub during shifting is attenuated by the elastic washer, the stoppering due to the vibration can prevent degradation of durability.

In addition, since the elastic washer buffers the shock applied to the stopper when the first hub, which is finally coupled to the first driving plate, is assembled when the first clutch disk is assembled, the assembly and disassembly of the first clutch disk occurs frequently. Damage to the stopper ring can be prevented in advance, and thus the overall assembly convenience can be further improved.

In addition, the displacement of the first hub coupled to the first drive plate by the amount of the axial displacement of the elastic washer allows axial displacement, thereby allowing the clutch disc assembly to absorb the axial misalignment of the transmission input shaft.

1 is a front sectional view partially omitting a conventional dry double clutch.
Figure 2 is an exploded perspective view showing the assembly structure of the first clutch disk shown in FIG.
Figure 3 is a front sectional view of the dry double clutch according to the present invention.
4 is a perspective view of the first clutch disk shown in FIG.
5 is a detailed view of portion A of FIG. 3;
6 is an exploded perspective view showing the assembly structure of the first clutch disk shown in FIG.
Figure 7 is an exploded perspective view showing a modified assembly structure of the first clutch disk shown in FIG.

Hereinafter, a dry double clutch according to an embodiment of the present invention will be described with reference to the accompanying drawings.

As shown by reference numeral 1 in FIG. 3, the dry double clutch of the present invention is connected to the engine through a damper flywheel (not shown) to transfer the power of the engine to the transmission. The outside is surrounded by an open annular casing 2. Inside the annular casing 2, the first pressure plate 7, the first clutch disc 3, the intermediate plate 5, the second clutch disc 6, and the second pressure plate 9 are installed in order from the engine side. Among them, in particular, the first clutch disc 3 is composed of the clutch plate 11, the first drive plate 13, and the first hub 15 again.

Here, the clutch plate 11 is a portion forming the friction surface of the first clutch disk 3, as shown in Figs. 3 and 4, in the form of a leaflet flat, friction on the front and rear surfaces Facing 17 serving as a pad is attached. In addition, interposed between the intermediate plate 5 and the first pressure plate 7 is in contact with or separated from the intermediate plate 5 and the first pressure plate 7 through the facing 17 so as to interrupt power. .

The first drive plate 13 is a part constituting the body of the first clutch disk 3, as shown in Figures 3 to 7, is in the form of a hollow truncated cone protruding gently toward the engine as a whole, The outer circumferential edge 47 is coupled to the inner circumference of the clutch plate 11 via a rivet 49, and an opening 51 for fitting the first hub 15 penetrates through the center. At this time, the female spline 53 is processed on the inner circumferential surface of the opening 51 so that the first hub 15 fitted to the inner circumference cannot be rotated relatively.

The first hub 15 is a portion for supporting the first drive plate 13 and the clutch plate 11 which are continuously arranged in the radial direction on the transmission inner input shaft (not shown) so as to be axially movable. As shown in FIG. 7, the male spline 55 corresponding to the female spline 53 of the inner circumferential surface of the opening 51 is mounted on the outer circumferential surface of the first driving plate 13. Processed on In addition, as shown in FIGS. 3 to 7, the first hub 15 has a shaft hole 57 through which a transmission inner input shaft is inserted in a central portion thereof, and a female spline 59 is formed on the inner circumferential surface of the shaft hole 57. It is machined and splined to the transmission inner input shaft to be axially movable on the inner input shaft.

As described above, the first clutch disc 3 axially supported on the transmission inner input shaft via the first hub 15 may include a stopper ring 21, a retainer ring 23, And the first hub 15 is coupled to the center of the first drive plate 13 by the assembly structure consisting of the elastic washer (25).

Here, the stopper ring 21 is shown in FIG. 6, as shown in FIG. 5 as a ring body, on the inner surface of the first drive plate 13 and the first hub 15, that is, on the surface facing the transmission. It is supported on the first drive plate 13 and the first portion of the hub (19) surrounding the boundary portion 19. At this time, the stopper ring 21 is formed along the inner circumferential edge 39 of the seating sheet 37 recessed concave toward the transmission to seat the elastic washer 25.

As shown in FIG. 6, the retainer ring 23 is similarly formed in a ring body, and as shown in FIG. 5, the outer surface of the first drive plate 13 and the first hub 15, that is, toward the engine. It is supported on the surface so as to surround the boundary portion 19 of the first driving plate 13 and the first hub 15. At this time, the retainer ring 23 is coupled to the stopper ring 21 facing by the rivet 61 fastened through the first driving plate 13 as shown in FIG. ), The first driving plate 13, and the retainer ring 23 are formed with a plurality of through holes 63 for fastening the rivets 61 on the same line.

Thus, the retainer ring 23 is not shown but can prevent the first hub 15 from leaving the opening 51 of the first drive plate 13 by itself, more preferably in FIGS. 5 and 6. As shown, the snap ring 27 snaps the snap ring 27 between the retainer ring 23 and the outer surfaces of the first drive plate 13 and the first hub 15, thereby providing 1 Departure of the opening 51 of the drive plate 13 can be prevented.

The elastic washer 25 is a ring-shaped elastic body that buffers the first drive plate 13 in the axial direction. As shown in FIGS. 3, 5, and 6, the first drive plate 13 and the first drive plate 13 are formed. The first hub 15 is elastically supported in the axial direction by being interposed between the inner surface of the first hub 15, that is, the surface facing the transmission and the stopper ring 21. To this end, the elastic washer 25, as shown in Figures 5 and 6, the annular body 35 is inclined in the shape of a truncated cone so that the inner periphery 31 protrudes toward the engine rather than the outer periphery 33. In addition, the stopper ring 21 supporting the elastic washer 25 is formed with a seating sheet 37 for mounting the elastic washer 25 as mentioned above.

At this time, the elastic washer 25 as a preferred embodiment of the present invention, as shown in Figure 7, the outer periphery 33 may be formed by cutting a plurality of engaging grooves 41 in the circumferential direction, stopper One or more locking means may be formed on the seat 21 to protrude from the ring 21 so as to be caught by the locking groove 41 of the elastic washer 25 to prevent relative rotation of the elastic washer 25. As the locking means, one or more locking protrusions protruded radially inward from the body 43 of the stopper ring 21 and lifted up from the seating sheet 37 by a height difference from the seating sheet 37 as shown in FIG. More preferably 45).

Now, the operation of the dry double clutch 1 according to the present invention configured as described above is as follows.

As shown in FIG. 3, the dry double clutch 1 of the present invention includes a first pressure plate 3 having a first clutch disc 3 interposed between the intermediate plate 5 and the first pressure plate 7 according to a shift operation. 7) When the dry double clutch 1 is assembled, the bearing 10 is press-fitted to the inner input shaft of the transmission when the dry double clutch 1 is assembled by being pressed or released by the intermediate plate 5 to be contacted or separated. 5) and then the clutch plate 11 and the first drive plate 13 which are integrally coupled to the outside thereof are first raised, and then the first hub 15 is formed in the opening 51 of the first drive plate 13. Fasten. Then, the assembly is completed by fixing the first hub 15 by the retainer ring 23 or the snap ring 27.

At this time, since the elastic washer 25 wrapped by the stopper ring 21 as shown in FIG. 5 elastically supports the first hub 15 from the inside, the stopper from the first hub 15 during the assembling operation. The shock applied to the ring 21 can be alleviated, and the axial vibration transmitted to the first hub 15 or the stopper ring 21 can be attenuated during the shifting operation even when mounted on the vehicle after assembly.

1: dry double clutch 3: first clutch disc
5: intermediate plate 7: first pressure plate
11 clutch plate 13 first drive plate
15: First Hub 17: Facing
21: stopper ring 23: retainer ring
25: elastic washer 27: snap ring
37: seating seat 41: locking groove
45: engaging projection 51: opening

Claims

delete

Interleaved clutch plate 11 interposed between intermediate plate 5 and first pressure plate 7 to contact or separate from intermediate plate 5 and first pressure plate 7 via a facing 17. ;
A first driving plate 13 having a hollow truncated cone shape coupled to an inner circumference of the clutch plate 11 to form a body; And
A first hub 15 mounted to an inner circumference of the opening 51 of the first driving plate 13 to axially support the clutch plate 11 and the first driving plate 13 on a transmission inner input shaft; In the dry double clutch (1) comprising a first clutch disk (3) consisting of,
The first clutch disc 3,
A stopper supported on the inner side surfaces of the first driving plate 13 and the first hub 15 facing the transmission and surrounding the boundary portion 19 of the first driving plate 13 and the first hub 15. Ring 21;
It is supported on the outer surface of the first drive plate 13 and the first hub 15 facing the engine and coupled with the stopper ring 21 facing each other with the first drive plate 13 interposed therebetween. A retainer ring 23 surrounding the boundary portion 19;
An elastic washer (25) interposed between the first driving plate (13) and the inner surface of the first hub (15) and the stopper ring (21) to elastically support the first hub (15); And
A snap is interposed between the retainer ring 23, the first drive plate 13, and the outer side surface of the first hub 15, and the first ring plate 23 is formed to be formed from the opening 51 of the first drive plate 13. 1, a double ring clutch, characterized in that it has an assembly structure consisting of; snap ring (27) to prevent the separation of the hub (15).

The method of claim 2,
The elastic washer 25 has an annular body 35 inclined so that the inner circumferential edge 31 protrudes toward the engine rather than the outer circumferential edge 33, and the stopper ring 21 has a recessed seat recessed toward the transmission. A dry double clutch, characterized in that 37 is formed along the inner circumference (39) to seat the elastic washer (25).

The method of claim 3,
The elastic washer 25 is a dry double clutch, characterized in that the plurality of engaging grooves 41 are cut in the circumferential direction on the outer circumferential edge (33).

5. The method of claim 4,
The stopper ring 21 is caught by the locking groove 41 of the elastic washer 25 and one or more locking means for preventing relative rotation of the elastic washer 25 protrudes on the seating sheet 37. Dry double clutch, characterized in that.

5. The method of claim 4,
The stopper ring 21 has one or more locking projections 45 protruding radially inward from the body 43 to be lifted from the seating sheet 37 by a height difference from the seating sheet 37, thereby providing the elastic washer ( Dry hooks, characterized in that the engaging groove 41 of the 25 to prevent the relative rotation of the elastic washer (25).