JP3191249B2 - 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 arranged is disclosed in Japanese Patent Application Laid-Open No. 62-75139 as a prior art. The clutch disk according to the related art includes a clutch hub, a disk plate and a sub-plate that rotate relative to the clutch hub, and a frame formed on an outer peripheral portion of the clutch hub, and the disk plate and the sub-plate. An elastic body composed of a plurality of elastic members is disposed between the window and the window provided on the plate. The allowable torsional angle of the clutch disk is determined by a compression ratio generated in a coil spring or elastic rubber constituting the elastic body due to relative torsion between the disk plate and the sub plate and the clutch hub. . In the clutch disk, a pin connecting the disk plate and the sub-plate so as not to rotate relative to each other is brought into contact with a notch provided in the clutch hub so that the allowable twist angle is not exceeded. I have. For the purpose of increasing the torsion angle, it is conceivable to lengthen the entire length of the elastic member itself in order to reduce the compressibility of the elastic member, but if the entire length of the elastic member is simply increased, Due to the centrifugal force generated by the rotation of the clutch disk, the substantially central portion of the elastic member bends to the outer peripheral side of the clutch disk and slides on the disk plate or the sub plate, causing wear of the elastic member, abnormal sound, and vibration. . or,
There is a conventional technology in which an auxiliary elastic body is provided in series with an existing elastic body, but the problem is that the weight is heavy and the cost is high because an auxiliary plate is provided in addition to the clutch hub, the disk plate, and the sub plate. There is.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to reduce the weight of the whole apparatus, the structure is simple, the wear of the elastic body is small, and the allowable torsion angle can be increased. It is to provide a clutch disk.

[0004]

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, comprising a plate, an elastic body disposed between the flange and a window formed in the disk plate and the sub-plate, wherein the disk plate and the sub-plate are connected to each other so as not to rotate relatively. A body circumferentially connects the plurality of elastic members in the window and connects the elastic members in the window.
A plate that is rotatable relative to the clutch hub, the disk plate and the sub-plate is interposed between the elastic members, and is disposed axially outside the disk plate or the sub-plate;
A clutch disk is characterized in that a locking member that engages with the plate is provided radially inward of the outer peripheral end .

[0005]

According to the above-mentioned means, the amount of compression of the elastic body can be increased by connecting a plurality of elastic members, so that the allowable torsion angle of the clutch disk can be increased, and the elastic member is provided between the elastic members. The elastic member can be prevented from bending to the outer peripheral side by the locking member that engages with the plate.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

FIG. 1 is a front view of a clutch disk according to a first embodiment of the present invention, and FIG. 2 is a sectional view taken along line 2-2 of FIG.
However, the lower half of FIG. 2 partially shows a sectional view of a second embodiment described later. In FIG. 2, the parts indicated 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 disk 1 includes a clutch hub 2, and a disk plate 3 and a sub plate 4 that are rotatable relative to the clutch hub 2 are provided on both sides of the clutch hub 2. 4 are connected by a connecting pin 6 so that they cannot rotate relative to each other. A back plate 12 having facings 5 on both sides is attached to the disk plate 3 and the sub-plate 4 by the connecting pins 6. The disk plate 3
Window 3 on which the elastic body is provided,
a, 4a are provided. The clutch hub 2 has a spline 2a on its inner periphery for engaging with the input shaft of the transmission, a flange 2b on its outer periphery, and a projection 2c on the flange 2b. Three elastic members 7 are provided on the circumference of the clutch disc 1 , each of which has two elastic rubbers 8, 8 as elastic members.
Are adhered to a plate 9, and on both sides thereof are adhered to a resin sheet 10.
0 recess 10a, the protrusion 2 of the clutch hub 2
c is resiliently engaged. The plate 9 is
It has a plate portion 9a adhered to the elastic rubber 8, and a projection 9b is provided on the inner peripheral side thereof. The plate 9 is provided on the inner peripheral side of the clutch disc 1 .
It faces the clutch hub 2 with a gap. A locking member 11 is provided on the outer side in the axial direction of each of the disc plate 3 and the sub-plate 4, and the locking portion 11 is provided.
It engages an inner peripheral portion of the timber 11 on the outer peripheral side of the boss portion of the clutch hub 2, against the radial direction of the clutch disk 1
The position of the locking member 11 is restricted. The locking member 11 is provided with three locking holes 11a at equally spaced positions on the circumference, and engages with the projections 9b of the plate 9 at the locking holes 11a. Clutch disk according to the present embodiment
1 inserts the elastic member 7 into the windows 3a, 4a provided in the disk plate and the sub plate 4, attaches the locking member 11, and attaches the elastic member 7 to the plate 9 at the bonding portion. Deflected in the inner circumferential direction of the clutch disc 1,
Assembling is performed by engaging the projection 9b of the plate 9 with the locking hole 11a of the locking member 11.

The operation of the clutch disk 1 will be described with reference to FIGS. When the clutch is gradually engaged, in FIG. 2, the pusher plate 50 forming the clutch cover having a structure other than the clutch disk 1 receives the urging force from the diaphragm 51 also having the structure of the clutch cover. 1, is pressed to the left and pressed against the flywheel 52 of the rotating prime mover. Thereby, the facing 5
The disk plate 3 and the sub-plate 4 attached thereto start rotating while sliding with respect to the flywheel 52, and the disk plate 3 and the sub-plate 4 rotate relative to the clutch hub 2 to generate the elastic 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. The rotation force is the disk plate 3,
The rotational torque transmitted from the sub-plate 4 to the clutch hub 2 via the elastic body 7 and transmitted to the transmission gradually increases. At this time, as the relative twist angle of the disk plate 3 and the sub plate 4 with respect to the clutch hub 2 increases, the compression amount of the elastic body 7 also increases. The allowable torsion angle of the clutch disk 1 is determined by the allowable compression ratio of the elastic member 7. In the present invention, the elastic member 7 is constituted by connecting two elastic rubbers 8 in series. Therefore, the allowable twist angle can be significantly increased.

Further, even when the centrifugal force generated by the rotation of the clutch disc 1 causes the substantially central portion of the elastic body 7 to receive an urging force toward the outer peripheral side of the clutch disc 1, the plate 9 remains at the protrusion 9b. The engagement with the stop member 11 prevents bending to the outer peripheral side.

Next, a second embodiment of the present invention will be described with reference to a part of the right half of FIG. In the second embodiment, a plate 29 is interposed between the elastic rubbers 8 constituting the elastic body 7. The plate 29 is also provided with a plate portion 29a and a projection 29b.
b denotes locking holes 31 provided in the locking member 31 at three circumferential positions.
a. The plate 29 has a low friction material 32,
By caulking the circumferentially equal position 34 of the clutch hub 2 via the washer 33, the position of the clutch disk 1 in the rotation axis direction is restricted. In this embodiment, the projection 29b of the plate 29 is
When engaging with the locking hole 31a of the clutch disk 1, it is not necessary to bend the bonding portion of the elastic body 7 with the plate 29 in the inner circumferential direction of the clutch disk 1, so that the plate 29 and the clutch hub 2 No gap is provided between them, which is advantageous in the strength of the plate 29.

Next, a third embodiment will be described with reference to FIG. In FIG. 3, the same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. As in the first embodiment, this embodiment also includes three elastic members 7 on the circumference. The elastic body 7 is also constituted by two elastic rubbers 8, 8, and a plate 39 is interposed between the elastic rubbers 8. The plate 39 according to this embodiment also has a plate portion 39a and a projection 39b, and the projection 39b is also engaged with locking holes 41a provided on the locking member 41 at three circumferential positions. However, in this embodiment, the engagement position between the projection 39b and the locking hole 41a is substantially the same as the position where the plate 39 is bonded to the elastic rubbers 8, 8 in the radial direction of the clutch disk 1. Therefore, when the clutch disk 1 is twisted, the elastic body 7 is compressed, and the plate 39 receives a force in the circumferential direction, the plate 39 hardly tilts in the radial direction.

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

[0013]

As described above, according to the clutch disk of the present invention, when the clutch disk is twisted, the plurality of elastic members constituting the elastic body are compressed with the plate interposed therebetween, so that the allowable twist angle is increased. Has a large effect on vibration absorption in the drive shaft system. In addition, since the entire length of the elastic body is not simply increased by interposing a plate between the plurality of elastic members, the elastic body does not bend toward the outer peripheral side of the clutch disk, and the elastic body is connected to the disk plate or the sub plate. Since there is no sliding wear, the life of the clutch disk can be extended.

Further, since only auxiliary members are used without adding a small member such as a plate and a locking member, the structure is simple and light, and the weight and cost of the whole vehicle can be reduced. . The locking member is a disc play
And located on the outside of the plate or sub-plate in the axial direction and elastic
The plate is located radially inward from the radially outer end of the member.
Because of the engagement, the position of the elastic member is regulated by the locking member.
Is no longer controlled, and the clutch disc is
Elastic member is arranged radially outside in the space
And a disk plate or sub
Do not interfere with the members arranged inside the plate in the axial direction.
The shape of the locking member can be specified
The degree of freedom is improved.

[Brief description of the drawings]

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

FIG. 2 is a sectional view of a clutch disk according to first and second embodiments of the present invention.

FIG. 3 is a front view of a clutch disk according to a third embodiment of the present invention.

[Description of Signs] 1 clutch disk 2 clutch hub 2b
Flange 3 Disk plate 4 Subplate 7 Elastic body 8 Elastic rubber 9, 29, 39 Plate 11, 31, 41 Locking member

Claims (3)

(57) [Claims] 1. 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, and formed on the flange, the disk plate and the sub plate. An elastic body disposed between the window and a clutch plate in which the disk plate and the sub-plate are connected to each other so that they cannot rotate relative to each other, wherein the elastic body connects a plurality of elastic members in the window in the circumferential direction. A clutch hub and a plate rotatable relative to the disk plate and the sub-plate are interposed between the elastic members connected in the window, and are disposed axially outside the disk plate or the sub-plate; Radial outer peripheral end of the elastic member
A clutch member for engaging the plate radially inward of the portion . 2. The clutch member according to claim 1, further comprising:
Patent application characterized by being provided so as to be relatively rotatable
A clutch disk that satisfies the first term of the required range. 3. The locking member is coaxial with the elastic member.
3. The clutch disk according to claim 1 , wherein said clutch disk is engaged with said plate in a position .