JP3232693B2 - Clutch disk - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clutch disk in a drive shaft system including a clutch for an automobile.

[0002]

2. Description of the Related Art A clutch disk in which an elastic body used in a drive shaft system is disposed is disclosed in Japanese Utility Model Laid-Open Publication No. Sho 62-56831. The conventional clutch disk includes a clutch hub, a disk plate and a sub plate that rotate relative to the clutch hub, and is provided on an outer peripheral portion of the clutch hub and on the disk plate and the sub plate. The window is provided with an elastic body composed of a plurality of elastic members. The elastic body includes an inner torsion spring, an outer torsion spring, and sheets provided at both ends thereof, and a projection on an outer peripheral portion of the sheet surrounds an end of the outer torsion spring. The sheet is fitted to windows provided on the disk plate and the sub-plate so as to be in a repelling state.

Here, when the rotational force from the prime mover is transmitted to the disk plate and the sub plate via the clutch disk facing, relative rotation occurs between the disk plate and the sub plate and the clutch hub. Compress the elastic body. At this time, since the protrusion on the outer peripheral portion of the sheet slides on the window provided on the disk plate and the sub plate, there is a problem that the sheet is worn.

In order to solve the above problem, even if a space is simply provided between the seat and the window, the seat moves in the outer circumferential direction of the clutch disk due to centrifugal force or vibration accompanying rotation of the clutch disk. After all, it comes into contact with the window, and the problem of abrasion of the sheet cannot be solved. Further, the provision of the space also causes a problem that the entire clutch disk becomes large in the radial direction.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to reduce the size of the entire clutch disk without increasing the size of the clutch disk.
An object of the present invention is to provide a clutch disk capable of preventing abrasion of an elastic sheet.

[0006]

According to the present invention, there is provided a clutch hub having a flange extending in a radial direction, a disk plate and a sub-plate arranged to be rotatable relative to the flange. A clutch disk including a plate and an elastic body including a sheet and disposed between the flange and the disk plate and the sub-plate, wherein the disk plate and the sub-plate are provided with a window for disposing the elastic body. In the above hula
The flange has a projection that protrudes in the circumferential direction from the outer peripheral end.
The elastic sheet engages with the protrusion of the flange.
The sheet has an outer peripheral end face,
The center of rotation of the clutch disk compared to the outer peripheral surface of the
Remote from the disk plate and sub-play
The center in the circumferential direction of the radially outer wall of the window portion of the window
Parts are both ends in the circumferential direction of the radially outer wall of the window part
Farther from the center of rotation of the clutch disc
In front of the disk plate and sub-plate
At the time of relative rotation with respect to the clutch hub,
A space is provided between the outer peripheral end face and the radially outer wall of the window.
It is configured so that

[0007]

According to the above means, the seat of the elastic body on the side relatively moving with respect to the disk plate and the sub plate has the flange of the clutch hub engaged with the concave portion of the seat, so that the seat has a centrifugal force. Does not move in the outer circumferential direction of the clutch disk, and further, since the substantially central portion of the window portion is farther from the rotation center of the clutch disk than both end portions, the elastic body is When the sheet flexes, a space is created between the sheet and the window of the disk plate and the sub-plate, and the sheet does not slide on the disk plate and the sub-plate, so that the abrasion of the sheet can be prevented.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

FIG. 1 is a front view of a clutch disk according to the present invention, and FIG. 2 is a sectional view taken along line 2-2 of FIG. In FIG. 2, the parts represented by two-dot chain lines indicate peripheral devices when the clutch disk of the present invention is mounted on a vehicle or the like. The clutch disc 1 has a clutch hub 2 and a shaft of the clutch hub.
On both sides in the direction, a disk plate 3 and a sub-plate 4 which are rotatable relative to the clutch hub 2 are provided, and the disk plate 3 and the sub-plate 4 are connected to the coupling pins 6 so that they cannot rotate relative to each other. Connected. Further, a back plate 15 having facings 5 on both sides in the axial direction is attached to the disk plate 3 and the sub-plate 4 by the coupling pins 6. The disk plate 3 and the sub plate 4 each have an elastic body.
Window portions 3a and 4a in which the window 7 is disposed are provided. or,
The clutch hub 2 is provided at its inner peripheral portion with a spline 2a engaging with an input shaft of a transmission ( not shown) , and at its outer peripheral portion with a flange 2b .
A projection 2c that protrudes in the circumferential direction from the outer peripheral end is provided. The elastic body 7 is constituted by an elastic rubber 8 and a resin sheet 9 which is a sheet adhered to both ends of the elastic rubber 8 , and the end of the elastic body 7 is formed by a concave portion 9 of the resin sheet 9.
5A, the clutch hub 2 is resiliently engaged with the projection 2c of the clutch hub 2. Further, as a feature of the present invention, a space 10 is provided between the window portions 3a and 4a and the resin sheet 9 at a position where the resin sheet 9 is located when the elastic body 7 is compressed. As described above, the windows 3a,
A substantially central portion in the circumferential direction of the outer wall in the radial direction of 4a is
As compared with both ends in the circumferential direction , the clutch disk 1 is farther from the rotation center of the clutch disc 1, that is, in other words,
In FIG. 1, the shape of the wall 11 of the windows 3a and 4a is non-circular. In addition, outside of the resin sheet 9
The peripheral end face has a larger diameter than the outer peripheral face of the flange 2b.
Far from the center of rotation of the
In other words, the outer peripheral edge of the resin sheet 9 in FIG.
The surface is disposed on the outer diameter side with respect to the outer peripheral surface of the flange 2b.
You.

The operation of the clutch disk 1 will be described with reference to FIGS. When the clutch is gradually started to be engaged, in FIG. 2, the pusher plate 12 forming the clutch cover having a structure other than the clutch disk 1 receives the urging force from the diaphragm 13 also having the structure of the clutch cover. 2, is pressed to the left and pressed against the flywheel 14 of the rotating prime mover. Thereby, the facing 5
The disk plate 3 and the sub-plate 4 connected to the flywheel 14 start rotating while sliding with respect to the flywheel 14, and the disk plate 3 and the sub-plate 4 rotate relative to the clutch hub 2 to generate the elasticity. The body 7 is compressed between the projection 2c of the clutch hub 2 and the windows 3a, 4a of the disk plate 3 and the sub-plate 4 (represented by a two-dot chain line in FIG. 1). The rotational force of the prime mover is transmitted from the disk plate 3 and the sub-plate 4 to the clutch hub 2 via the elastic body 7, and the rotational torque transmitted to the transmission gradually increases.
When the elastic body 7 is compressed, the wall 11 has a non-circular shape so that a space 10 is formed between the sheet 9 and the wall 11 of the window portion. Since the concave portion 9a is engaged with the projection 2c of the flange 2b, the sheet does not move to the outer peripheral side due to centrifugal force or vibration, and the sheet 9 is placed in the window 3a,
Since the sheet 9 does not slide, wear of the sheet 9 can be prevented. In addition, since the space is not provided on the entire circumference of the disk plate and the sub-plate, but is provided in a portion where there is no connecting pin connecting the disk plate and the sub-plate, it is necessary to move the connecting pin to the outer peripheral side of the clutch disk. There is no need to enlarge the entire clutch disk.

The present invention is not limited to the above-described embodiment, and various modifications may be made within the feasible range of the present invention, such as using a coil spring instead of elastic rubber. .

[0012]

As described above, according to the clutch disk of the present invention, since the seat supporting the elastic body can be prevented from being worn, a durable clutch disk having high vibration absorption performance can be realized. Further, since no space is simply provided on the entire circumference of the disk plate and the sub plate, the entire clutch disk is not enlarged, which is advantageous in mounting on a vehicle or the like.

[Brief description of the drawings]

FIG. 1 is a front view of a clutch disk according to the present invention.

FIG. 2 is a sectional view of a clutch disk according to the present invention.

[Explanation of symbols]

1 clutch disk 2 clutch hub 2b
Flange 3 disk plate 4 sub-plate 3a,
4a window 7 elastic body 9 sheet 9a recess 10 space

Claims (1)

(57) [Claims] A clutch hub with a flange extending to 1. A radial, and the disc plate and the sub-plate that are relatively rotatably disposed with respect to said flange, said flange includes a seat and said disk plate and the sub-plate a arranged elastic body between, on the disc plate and the sub-plate in the clutch disc with a window portion for disposing the elastic member, the flange
Is provided with a protrusion that protrudes in the circumferential direction from the outer peripheral end thereof.
The sheet of the elastic body has a concave portion which engages with the protrusion of the flange.
Part, wherein the outer peripheral end surface of the sheet is outside the flange.
Farther from the center of rotation of the clutch disc than the peripheral surface
In front of the disc plate and sub-plate
A substantially central portion in the circumferential direction of the radially outer wall of the writing window portion,
Compared to both circumferential ends of the radially outer wall of the window
And move it far from the center of rotation of the clutch disk.
The disk plate and the sub plate
When rotating relative to the latch hub, the outer periphery of the seat
A space is provided between the end face and a radially outer wall of the window.
Clutch disc characterized in that it is.