JPH0137227Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Field of Application> This invention relates to a clutch for a vehicle, and more particularly to a clutch disc of the type with a clutch facing bonded to it.

<Prior Art> A clutch disk used in a vehicle clutch has a clutch hub 1 that is spline-fitted to a clutch shaft (not shown) as shown in FIG.
A drive plate 4 and a sub-plate 5 are attached to the disc portion 1a of the clutch hub 1 via friction plates 2 and 3. A stop pin 6 that connects the drive plate 4 and the sub-plate 5 is a disc portion 1a of the clutch hub 1.
The grooves 1b are respectively arranged in an appropriate number of grooves 1b provided on the outer periphery of the grooves 1b.

Furthermore, torsion springs 7 are installed in the square holes 1c provided in the circumferential direction of the disk portion 1a, and in corresponding square holes 4a and 5a provided in the drive plate 4 and the sub-plate 5, respectively. Built-in.

On the outer periphery of the drive plate 4, a cushioning plate (leaf spring) having the shape shown in FIG.
9 is the rivet hole 10a, 10 of the joint part 10.
It is fixed by rivets 8, 8 driven into a. In addition, this cushioning plate 9
are attached at multiple locations along the outer periphery of the drive plate 4.

As shown in FIG. 2, the above-mentioned cushioning plate 9 has a flat facing adhesive portion 11 at the upper portion thereof following the joint portion 10. As shown in FIG. Next to this facing adhesive part 11 is an inclined flat cushion acting part 12, and further following this cushion acting part 12 is a flat facing adhesive part 13. These two facing adhesive parts 1
1 and 13 are parallel to each other as shown in FIG. 3, and annular clutch facings 14 and 15 are bonded to their outer surfaces, respectively.

Now, when the clutch is connected, as is well known, the clutch facings 14 and 15 are sandwiched between the flywheel and the pusher plate (none of which are shown), and the clutch hub 1 and the clutch facing 14 are , 15 becomes possible. Further, in this state, the cushioning plate 9 is compressed as shown in FIG.

When the clutch is disconnected, the clamping of the clutch facings 14 and 15 between the flywheel and the pressure plate described above is also released, and the clutch hub 1 and the clutch facing 1 are
4 and 15 is cut off.

While the vehicle is in operation, the clutch is repeatedly engaged and released as described above, and as the compressive force is repeatedly applied to the clutch facings 14 and 15, the cushioning plate 9 moves as shown in FIGS. 3 and 4.
The situation shown in the figure will be repeated.

<Problem to be solved by the invention> When the above cushioning plate 9 is compressed between both clutch facings 14 and 15,
The cushioning plate 9 has a cushioning acting portion 12 and both facing adhesive portions 11,1.
A load is generated in a direction that causes the boundary portions 11a, 13a with the clutch facings 14, 15 to slide along the adhesive surfaces of the clutch facings 14, 15. For this reason, both facing adhesive parts 11, 13 and clutch facings 14, 15
The adhesive strength gradually decreases, which may eventually lead to their peeling.

<Means for solving the problems> In order to solve the above problems, the present invention is configured as follows.

For example, as shown in FIG. 5, the cushioning plate 9A includes first and second facing adhesive portions 1 which are bent and formed parallel to each other at both ends of an inclined flat cushioning portion 12.
1,13. Further, clutch facings 14 and 15 are bonded to each of these facing bonded portions 11 and 13, respectively.

In the above cushioning plate 9A,
The cushion acting portion 12 includes the cushion acting portion 12 and the first and second facing adhesive portions 1.
Elongated holes 16 and 17 are formed that reach the boundaries 11a and 13a between the holes 1 and 13.

<Example> Next, an example of the present invention will be described based on FIG. 5.

First, the clutch disk cushioning plate 9A has almost the same shape as the conventional cushioning plate 9 described above, and has a connecting portion 10,
A first facing adhesive portion 11, a cushion acting portion 12, and a second facing adhesive portion 13 are respectively provided. This cushioning plate 9A
is the boundary portion 11a, 1 between the cushion acting portion 12 and the first and second facing adhesive portions 11, 13, respectively.
Rectangular long holes 16 and 17 reaching 3a are formed parallel to each other.

As already explained, when the clutch is connected and released, the above-mentioned cushioning plate 9A
A force that compresses this acts repeatedly. Therefore, at the boundary portions 11a, 13a between the clutch acting portion 12 and the facing adhesive portions 11, 13, for example, the adhesive surfaces of the clutch facings 14, 15 shown in FIGS. A load is applied in the direction of sliding in the left-right direction in the drawing.

Therefore, the function of the cushioning plate 9A of this embodiment when the above-mentioned load occurs will be explained.
Now, the four corners of the elongated hole 16 are designated by symbols a, b, c, and d.
The four corners of another elongated hole 17 are shown as e, f, g, and h. Looking at the boundary portion 11a when receiving the above load, the load applied to the sides c-d and g-h of each of the elongated holes 16 and 17 is significantly reduced, and the portion other than these is significantly reduced. Only the above-mentioned load is applied.

Also, regarding the other boundary portion 13a, the above-mentioned load is significantly reduced at sides a-b and e-f of each elongated hole 16, 17, and the load is applied only to the portions excluding these.

That is, in this embodiment, the elongated holes 16 and 17 formed in the cushioning acting portion 12 reduce the load in the sliding direction generated on the boundary portions 11a and 13a, regardless of repeated compression of the cushioning plate 9A. , whereby the facing adhesive portions 11, 13 and the clutch facing 14,
15 will have a longer adhesive life.

Note that the shape and number of the elongated holes 16 and 17 are determined according to the fifth
The present invention is not limited to the embodiment shown in the figures.

<Effects of the Invention> As described above, the present invention is achieved by forming an elongated hole in the cushioning portion of the cushioning plate that reaches the boundary between the cushioning portion and the first and second facing adhesive portions. Although the compression on the cushioning plate is repeated as the clutch is connected and released, the sliding direction acting on the boundary between the cushion acting part and the first and second facing adhesive parts. The load is significantly reduced at the location of the elongated hole, and the life of the bond between the cushioning plate and the clutch facing is extended.

[Brief explanation of the drawing]

Figure 1 is a longitudinal cross-sectional view of a conventional clutch disk.
Figure 2 is an enlarged plan view of the cushioning plate used in the conventional clutch disc;
This figure is an enlarged plan view seen from the direction of arrow A in FIG. 1, and FIG. 4 is an enlarged plan view showing a state in which the cushioning plate is compressed from the state shown in FIG. 3. FIG. 5 is a plan view of a cushioning plate representing an embodiment of the present invention. 9A...Cushioning plate, 11, 13
...Facing bonded portion, 11a, 13a...Boundary portion, 12...Cushion action portion, 14, 15...
...Clutch facing, 16, 17...long hole.

Claims (1)

[Scope of utility model registration request] The first section is bent so as to be parallel to each other at both ends of the inclined flat cushion action section.
and an adhesive clutch disk having a cushioning plate having a second facing adhesive portion, and a clutch facing bonded to each of the facing adhesive portions, the cushioning plate having a cushion acting portion,
An adhesive clutch disc for a vehicle is characterized in that a long hole is formed that reaches the boundary between the cushion acting part and the first and second facing adhesive parts.