JPH0519611Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a torsion mechanism of a clutch disk in a clutch used in a vehicle such as an automobile.

(Prior art) Conventionally, as shown in FIG.
and a disk plate 3 having a clutch facing 2 are provided so as to be relatively torsionally displaceable on the same axis. In some cases, a tension spring 7 or an elastic ring is tensioned in the radial direction of the disc between the clutch hub 1 and the disc plate 3 to transmit torque between the clutch hub 1 and the disc plate 3. This type of clutch disk torsion mechanism is disclosed in, for example, Japanese Utility Model Publication No. 47-36202 and Japanese Utility Model Application Publication No. 59-66028.

(Problem to be solved by the invention) However, in the conventional clutch disk torsion mechanism, due to its structure, the pin 5 on the clutch hub 1 side
The space between the tension spring 7 and the pin 6 on the disk plate 3 side, the so-called inter-pin distance, limits the installation space for the tension spring 7, so the overall length, outer diameter, wire diameter, number of turns, etc. of the spring 7 are limited. will receive.

For this reason, in order to increase torsional rigidity,
In cases where a high stopping torque is desired, etc., it is necessary to increase the outer diameter, wire diameter, etc. of the tension spring 7 to increase the spring constant of the spring 7, but due to the above-mentioned installation space constraints of the spring 7, Therefore, the range in which it can be handled is limited. As described above, the conventional clutch disk torsion mechanism has the problem that it is difficult to secure a high stopping torque and the degree of freedom in spring design is low.

Therefore, the purpose of the present invention is to solve the above-mentioned problems in the conventional technology, to create a clutch disk torsion mechanism that can eliminate restrictions on the installation space of the spring as much as possible, and increase the degree of freedom in spring design. It is about providing.

(Means for Solving the Problems) The present invention for solving the problems in the conventional techniques described above provides a clutch hub and a disk plate having a clutch facing so as to be relatively torsionally displaceable on the same axis. A first damper sheet is rotatably supported on the flange on the outer periphery of the clutch hub via a pin, and a second damper sheet is rotatably supported on the disc plate via a pin. The gist of the structure is that a compression spring is interposed between the disks so as to be arranged in the radial direction of the disk.

(Function) According to the above-described means, when a relative torsional displacement occurs between the clutch hub and the disk plate, the first damper sheet and the second damper sheet each rotate about the pin as a fulcrum, and the compression spring As the spring is tilted and compressed, a stop torque is generated due to the elasticity of the spring, and this compression force on the compression spring causes torque transmission between the disc plate and the clutch hub.
Relative torsional displacement between the two is allowed.

The torsion mechanism of this clutch disk is such that a compression spring is interposed between the damper sheets which are rotatably attached to the clutch hub and the disk plate via pins, respectively, so that the spring support portions of both damper sheets are The distance between the pins can be increased regardless of the distance between the pins.

(Example) An example of the present invention will be described below. In FIG. 1, which shows a front sectional view of the clutch disk, and FIG. 2, which shows a partially cutaway side view of the same, the clutch hub 1
0 has a flange portion 11 on its outer periphery, and
It has a spline groove 12 on its inner periphery, which is spline-fitted with an input shaft (not shown) of the transmission.

On one side (left side in FIG. 1) of the flange portion 11 of the clutch hub 10, a disk plate 13 having a substantially annular flat plate shape is capable of relative torsional displacement on the same axis as the clutch hub 10 via a liner 14 and a snap spring 15. Rotatably arranged. A clutch facing 17 is provided on the outer periphery of the disc plate 13 via a disc spring 16.

The flange portion 11 of the clutch hub 10 includes:
Pin 18 is attached by caulking. pin 1
8 (the right end in FIG. 1) is connected to one end of the first damper sheet 19 (the lower end in FIG. ) is rotatably supported via a bush 20. The outer plane part of the damper sheet 19 serves as a spring support part 19a, and is parallel to the inner plane part 19b of the damper sheet 19. The other end of the pin 18 (the left end in FIG. 1) is loosely inserted into an arc-shaped stopper hole 21 of the disk plate 13. Stopper hole 21
The movement range of the pin 18 is limited so that the relative torsional displacement between the clutch hub 10 and the disk plate 13 is within a necessary and sufficient range, and both of them are
0.13 to prevent the displacement beyond the necessary.

The disk plate 13 has the pin 18
A pin 22 parallel to the pin 18 at an outer position is attached by caulking. This pin 2
2 (the right end in FIG. 1), the upper end of a second damper sheet 23 formed by bending a metal band-shaped plate material into a substantially L-shaped cross section is attached to the bush 2.
It is rotatably supported via 4. The other end of the second damper sheet 23 is connected to the spring support portion 2
3a, it is interposed between the spring support part 19a and the inner plane part 19b of the first damper sheet 19, and faces parallel to the support part 19a. Note that the spring support portion 23a of the second damper seat 23 is close to the inner flat surface portion 19b of the first damper seat 19, and the spring support portion 23a of the second damper seat 23
The tilting movements of both damper sheets 19, 23 about the pins 18, 22 due to the twisting of the disk plate 13 are interlocked with each other, and unnecessary rotations of both damper sheets 19, 23 in opposite directions are prevented. blocked.

A compression spring 25 is interposed between the outer end of the first damper sheet 19 and the tip of the second damper sheet 23 so as to be arranged in the radial direction of the disk.

In this example, four sets of the above mechanisms are arranged on the circumference of the clutch disk.

In the clutch disk torsion mechanism described above, when a relative torsional displacement occurs between the clutch hub 10 and the disk plate 13, the first damper sheet 19 and the second damper sheet 23 rotate about the pins 18 and 22, respectively. However, as the compression spring 25 is tilted and compressed, the spring 25 generates a stop torque. The compression spring 25 is tilted as the damper sheets 19 and 23 rotate so that the axis of the spring 25 is substantially parallel to the straight line connecting the axes of the pins 18 and 22.

For example, in FIG. 2, if it is assumed that the clutch hub 10 is relatively torsionally displaced in the counterclockwise direction and the disk plate 13 is relatively torsionally displaced in the clockwise direction, the first damper sheet 19 is rotated clockwise about the pin 18, and , the second damper sheet 23 rotates clockwise about the pin 22, and the compression spring 25 is compressed while being tilted (see the two-dot chain line A in FIG. 2).
A stop torque is generated due to the elasticity of the compression spring 25, and this compressive force on the compression spring 25 causes torque transmission between the clutch hub 10 and the disc plate 13, and also causes relative torsional displacement between the two. is allowed.

Furthermore, the torsion mechanism of this clutch disk includes a compression spring 25 interposed between damper seats 19 and 23 which are rotatably attached to the clutch hub 10 and disk plate 13 via pins 18 and 22, respectively. Therefore, the distance between the spring support portions 19a, 23a of both damper sheets 19, 23 can be made large regardless of the distance between the pins 18, 22.

In addition, the compression spring 25 has
Instead of the illustrated coil spring, an elastic rubber material can be used.

(Effect of the invention) That is, according to the invention, when a relative torsional displacement occurs between the clutch hub and the disk plate, the first damper sheet and the second damper sheet each rotate about the pin as a fulcrum, and the compressor is rotated. As the compression spring is tilted and compressed, a stop torque is generated due to the elasticity of the spring, and this compression force on the compression spring causes torque transmission between the disc plate and the clutch hub. By allowing relative torsional displacement between the two, it functions as a clutch.

In particular, the torsion mechanism of this clutch disk is such that a compression spring is interposed between the damper sheets which are rotatably attached to the clutch hub and the disk plate through pins, so the springs of both damper sheets are Since the spacing between the supporting parts can be increased regardless of the distance between the pins, the installation space for the spring can be expanded compared to conventional clutch disks, and the overall length, outer diameter, wire diameter, This has the effect that restrictions such as the number of turns can be eliminated as much as possible, and the degree of freedom in spring design is increased.
For this reason, for example, if you want to secure a higher stopper torque than usual in the design, and it becomes necessary to incorporate a tension spring with a large spring constant by increasing the outer diameter, wire diameter, etc., the installation space for the spring can be expanded. This allows the spring to be easily installed.

[Brief explanation of the drawing]

Figures 1 and 2 show an embodiment of the present invention; Figure 1 is a front sectional view of a clutch disk, Figure 2 is a partially cutaway side view of the same, and Figure 3 is a clutch disk showing a conventional example. FIG. 10...Clutch hub, 11...Flange part,
13... Disc plate, 17... Clutch facing, 18... Pin, 19... First damper sheet, 22... Pin, 23... Second damper sheet, 25... Compression spring.

Claims (1)

[Scope of utility model registration request] A clutch hub and a disk plate having a clutch facing are provided so as to be relatively torsionally displaceable on the same axis, and a first damper sheet is rotatably supported via a pin on a flange portion on the outer periphery of the clutch hub. A clutch disk characterized in that a second damper sheet is rotatably supported on a plate via a pin, and a compression spring is interposed between both damper sheets so as to be arranged in the radial direction of the disk. torsion mechanism.