JPH0245533Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention mainly relates to a clutch disc for a friction clutch for a vehicle.

(Prior Art) In general, reducing the mass of the clutch disk of a friction clutch for a vehicle reduces the overall moment of inertia including the input shaft and counter gear of the transmission, which in turn reduces the synchronization of the transmission. As is well known, this is advantageous in improving the durability of the thread mechanism and the like. By the way, the conventional clutch disc is clutch hub,
The main components are a disc plate and a sub-disk plate that are provided to sandwich a flange integrally formed on the outer periphery of the hub from both sides, and a clutch facing fixed to the outer periphery of this disc plate (for example, in the US Patent No.
3702651).

(Problems to be solved by the invention) It is difficult to reduce the weight of the clutch disk with the above structure due to its structure.In order to achieve this, it may be possible to use lightweight materials for the components of the clutch disk. However, if this is done carelessly, the durability of the clutch disc will be reduced and the cost will increase significantly.

(Means for Solving the Problems) In order to solve the above problems, the clutch disk of the friction clutch according to the present invention is constructed as follows.

That is, as is clear from FIG. 1, on the outer periphery of the clutch hub 1, a disc plate 4 provided with a clutch facing 7 and a sub-disc plate 10 having a smaller diameter are offset from each other in the axial direction of the clutch hub 1. It is located.
This sub-disc plate 10 is fixed to the clutch hub 1 side. Further, a plurality of claws 9 and 12 are formed on the inner periphery of the disk plate 4 and the outer periphery of the sub-disk plate 10, respectively, so as to be positioned alternately along the circumferential direction.

A single ring 13 continuous in the circumferential direction is arranged between the two disk plates 4, 10 in the axial direction of the clutch hub 1. Each pawl 9 of the disk plate 4 and each pawl 12 of the sub-disk plate 10 are connected to each other by this ring 13.
Both disk plates 4 and 10 are coupled so that they can rotate relative to each other. Furthermore, a torsion coil spring 15 is assembled between the respective claws 9 and 12 of both the disk plates 4 and 10, with the ring 13 as a core.

(Function) In the above configuration, for example, torque is transmitted from the clutch facing 7 side to the clutch hub 1 side by rotating the disc plate 4 together with the clutch facing 7, and connecting each pawl 9 of the disc plate 4 to the sub-disk 1. Each claw 1 of plate 10
2 and the above torsion coil spring 1
5 is compressed. As a result, a predetermined torsional characteristic as a clutch disk is exhibited, as is generally known. The above torsion coil spring 15 is in a predetermined state (stopper torque state)
When compressed to
The clutch hub 1 rotates together with this sub-disc plate 10.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

In FIG. 1 showing a longitudinal section of the clutch disk and FIG. 2 showing a part of its left side surface, an inner spline 3 formed on the inner circumference of the clutch hub 1 is connected to an input shaft (not shown) of a transmission. ), the hub 1 is spline-fitted to the hub 1 so as to be non-rotatable and slidable in the axial direction, and a flange 2 with a significantly smaller diameter than conventional hubs is integrally formed on the outer periphery of the hub 1. has been done. On one side of the flange 2 (the right side in FIG. 1), a large-diameter disk plate 4 and a smaller-diameter sub-disk plate 10 are both disposed. While the disc plate 4 is rotatable relative to the clutch hub 1, the inner circumference of the sub disc plate 10 is fixed to the flange of the clutch hub 1 by a plurality of rivets 11, as is clear from FIG. It is fixed at 2. Further, on the outer periphery of the disk plate 4, a plurality of disk springs 5 are arranged along the circumferential direction.
are each fixed by rivets 6,
Clutch facings 7 are similarly fixed to both sides of the disk springs 5 by rivets 8.

Now, a plurality of claws 9 are formed at regular intervals along the circumferential direction on the inner circumference of the disk plate 4. Also, sub disk plate 1
Similarly, a plurality of claws 12 are formed on the outer periphery of 0 along the circumferential direction. These claws 9, 12
are formed by bending in opposite directions to each other, as shown in FIG. are slidably engaged, whereby both disk plates 4, 10
are coupled for relative rotation.

Note that, as shown in FIG. 2, a constant interval is maintained between each claw 9 of the disc plate 4 and each claw 12 of the sub-disc plate 10 in the circumferential direction, and these claws 9, A torsion coil spring 15 is assembled between each of the torsion coil springs 12 with the ring 13 as a core. In addition, between both ends of each of these torsion coil springs 15 and each pawl 9, 12 of the disk plate 4 and sub-disc plate 10, the elastic force of this spring 15 is stabilized against each pawl 9, 12. Washers 14 are interposed so as to act as a guide.

In the above configuration, when torque is transmitted between the clutch hub 1 and the clutch facing 7, a relative angular displacement occurs between the disc plate 4 and the sub-disc plate 10, as described above. As a result, the torsion coil spring 15 is compressed between the respective pawls 9 and 12 of both disc plates 4 and 10, and the torsion characteristics of the clutch disc are exhibited. These torsion coil springs 15 are interposed between the pawls 9 and 12 of the disc plate 4 and the sub-disk plate 10, which are arranged on one side of the flange 2 of the clutch hub 1. Therefore, unlike the clutch discs that have been used up until now, a torsion coil spring (or torsion rubber) is interposed between the flange of the clutch hub and the disc plate and sub-disc plate arranged on both sides of this flange. The difference is that the structure is very simple, and the clutch disc is lightweight and easy to assemble. In this embodiment, the claws 9 and 12 of both disk plates 4 and 10 are slidably engaged with the ring 13, but which of the claws 9 and 10 fixes one to the ring 13? It is also possible to replace it with a configuration like this.

(Effect of the invention) As described above, the present invention allows the disc plate and the sub-disc plate, which are arranged to be shifted from each other in the axial direction of the clutch hub, to be able to rotate relative to each other by using a ring together, and to make the disc plate and the sub-disc plate mutually staggered in the axial direction of the clutch hub. A torsion spring can be assembled between the disc plates, thereby making it possible to reduce the weight of the clutch disc, thereby reducing the moment of inertia of the input system of the vehicle transmission.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is a longitudinal sectional view of a clutch disk, and FIG. 2 is a partial side view as seen from the left side of FIG. 1. 1...Clutch hub, 4...Disc plate, 7...Clutch facing, 9...Disc plate claw, 10...Sub disc plate, 12...Sub disc plate claw, 13...
...Ring, 15...Torsion coil spring.

Claims (1)

[Scope of utility model registration request] On the outer periphery of the clutch hub, a disc plate with a clutch facing and a sub-disc plate with a smaller diameter are arranged offset from each other with respect to the axial direction of the clutch hub, and the sub-disc plate is fixed to the clutch hub side, and the disc plate has a smaller diameter than the disc plate. A plurality of claws are formed on the inner periphery of the plate and the outer periphery of the sub-disk plate, respectively, so as to be alternately located along the circumferential direction,
Further, a single ring continuous in the circumferential direction is disposed between both disc plates in the axial direction of the clutch hub, and this ring allows each pawl of the disc plate and each pawl of the sub-disk plate to connect to both discs. A clutch disk of a friction clutch in which the plates are connected to each other so that they can rotate relative to each other, and a torsion coil spring is assembled between each pawl of both disk plates with the ring as a core.