JPH0642551A - Pressure plate fitting structure for clutch cover assembly - Google Patents

Abstract

PURPOSE:To obtain pressure plate mounting structure in which an outer diameter can be decreased. CONSTITUTION:This mounting structure is provided with a strap plate mounting member 20 and a strap plate 22. The strap plate mounting member 20 is fixed to the outer circumferential face of a pressure plate 11, extends in the axial direction and has a bent part 20b bent inward in the radial direction. The strap plate 22 is fixed at its one end to the bent part of the strap plate mounting member 20, while the other end extending in the rotation direction of the pressure plate 11 is fixed to a side face 10b extending inward in the radial direction of a clutch cover 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a pressure plate on a clutch cover of a clutch cover assembly.

[0002]

2. Description of the Related Art A clutch cover assembly generally includes a clutch cover, a pressure plate housed inside the clutch cover, and a diaphragm spring for pressing the pressure plate toward the flywheel. The clutch cover is fixed to the outer peripheral portion of the flywheel with bolts or the like.

For the purpose of miniaturizing the flywheel or accommodating a clutch having a large torque transmission capacity in a small space, a clutch cover mounting structure as shown in Japanese Utility Model Publication No. 50-1762 is disclosed.
In this structure, the outer peripheral portion of the clutch cover is fixed to the outer peripheral surface of the flywheel. Therefore, the flange portion of the clutch cover in the conventional structure is unnecessary,
The outer diameter dimension of the flywheel can be made closer to the outer diameter dimension of the clutch disc assembly.

[0004]

In the structure disclosed in the above-mentioned conventional publication, the outer diameter dimensions of the pressure plate, the clutch disc assembly and the like can be made smaller than the torque transmission capacity. On the other hand, a strap plate is usually used to fix the pressure plate to the clutch cover. One end of the strap plate is fixed to the outermost peripheral portion of the pressure plate and the other end is fixed to the clutch cover. A boss or the like is required for attaching the strap plate, and even in the structure disclosed in the above-mentioned prior art publication, the space occupied by the strap attaching structure portion becomes large, and the outer diameter cannot be made too small.

It is an object of the present invention to reduce the space occupied by the mounting structure of the pressure plate, particularly in a clutch cover assembly having a structure in which the outer peripheral portion of the clutch cover is fixed to the outer peripheral surface of the flywheel.

[0006]

A pressure plate mounting structure for a clutch cover assembly according to the present invention is a structure for mounting a pressure plate on a clutch cover of a clutch cover assembly, which comprises a strap plate mounting member and a strap plate. It has and.

The strap plate mounting member is
One end is fixed to the outer peripheral surface of the pressure plate, and the other end extending in the axial direction is bent inward in the radial direction.
One end of the strap plate is fixed to the bent portion of the strap attachment member, and the other end of the pressure plate extending in the rotational direction is fixed to a side surface of the clutch cover extending inward in the radial direction.

[0008]

In the pressure plate mounting structure according to the present invention, the strap plate mounting member is fixed to the outer peripheral surface of the pressure plate, and the strap plate mounting member extends in the axial direction and is bent inward in the radial direction. . A strap plate connects between the bent portion and a side surface of the clutch cover that extends inward in the radial direction. Thus, the strap plate is arranged radially inward from the outermost peripheral portion of the pressure plate. Therefore, the radial dimension of the entire clutch cover assembly can be reduced.

[0009]

FIG. 1 shows a clutch cover assembly to which an embodiment of the present invention is applied. This clutch cover assembly 1
Is fixed to the flywheel 2, and a clutch disc assembly 3 is arranged between the clutch cover assembly 1 and the flywheel 2. A flexible plate 4 is fixed to the flywheel 2, and an inner peripheral portion of the flexible plate 4 is fixed to a member on the engine side by a plurality of bolts 5. A spline hub 6 is arranged in the center of the clutch disc assembly 3, and a main drive shaft 7 on the transmission side is spline-fitted into a spline hole formed in the center of the spline hub 6. ing.

The clutch cover assembly 1 has a clutch cover 10, a pressure plate 11 arranged inside the clutch cover 10, and a diaphragm spring 12 for pressing the pressure plate 11 to the flywheel 2 side. . The clutch cover 10 is formed in a bowl shape and has an outer peripheral side surface 10a extending in the axial direction.
And a vertical side surface 10b extending inward in the radial direction substantially parallel to the flywheel 2 from the outer peripheral side surface 10a. Then, the end of the outer peripheral side surface 10a has a flywheel 2
It is fixed to the outer peripheral surface 2a of the device by a plurality of bolts 13.

The pressure plate 11 is a ring-shaped member, and the side surface on the flywheel 2 side has a friction surface 11a.
have. The side surface on the diaphragm spring 12 side has support portions 11b protruding toward the diaphragm spring 12 side at predetermined intervals in the circumferential direction. The support portion 11b supports the outer peripheral end of the diaphragm spring 12.

The diaphragm spring 12 is a disk-shaped member which is arranged concentrically with the clutch cover 10, and a substantially middle portion in the radial direction is supported by the clutch cover 10 via a wire ring 13 and the like. A release device 14 can be brought into contact with the inner peripheral end of the diaphragm spring 12, and the clutch disc assembly 3 is released by pushing the inner peripheral end toward the engine.

On the outer peripheral surface of the pressure plate 11,
A plurality of strap plate attachment members 20 are fixed by bolts 21 at predetermined intervals in the circumferential direction. A hole 10c for tightening the bolt 21 is formed in the outer peripheral side surface 10a of the clutch cover 10 corresponding to the bolt 21. The strap plate mounting member 20 is mounted on the outer peripheral surface of the pressure plate 11 as shown in FIG.
And a bent portion 20b extending axially from the mounting portion 20a and further bent inward in the radial direction. The bolt 2 is provided at the approximate center of the mounting portion 20a.
A through hole 20c through which 1 passes is formed. In the bent portion 20b of the strap plate attachment member 20,
One end of the strap plate 22 is fixed by a rivet 23. The strap plate 22 is composed of a pair of strap plates 22 a and 22 b, each extending in the rotation direction of the pressure plate 11, and the other end thereof is provided with a rivet 24 on the vertical side surface 10 b of the clutch cover 10.
It is fixed by.

In this way, the pressure plate 1
1 and the clutch cover 10, the strap plate 22
And a strap plate attachment member 20 so that they cannot rotate relative to each other and can move relative to each other in the axial direction. In the clutch cover assembly 1 having such a structure, first, the strap plate 2 is attached to the clutch cover 10.
2 and the strap plate attachment member 20 are fixed. Further, the diaphragm spring 12 is attached. Next, the pressure plate 11 is inserted into the clutch cover 10, and the hole formed on the outer peripheral surface of the pressure plate 11 and the through hole 20c of the strap plate attachment member 20 are aligned with each other. Then, from the hole 10c formed on the outer peripheral side surface of the clutch cover 10 to the bolt 21
Is inserted and the pressure plate 11 is fixed to the strap plate attachment member 20. The clutch disc assembly 3 is arranged in the clutch cover assembly 1 and the bolts 1 are attached to the outer peripheral surface 2a of the flywheel 2.
Fix with 3. The flywheel 2 is previously fixed to a flexible plate 4 which is fixed to a member on the engine side by a bolt 5.

In such an embodiment, when the clutch is engaged, the diaphragm spring 12 pushes the pressure plate 11 toward the flywheel 2 to sandwich the clutch disc 3 between the flywheel 2 and the pressure plate 11. Further, when the clutch is released, the inner peripheral end of the diaphragm spring 12 is pushed toward the engine by the release device 14. As a result, the pressing load of the pressure plate 11 is released. This allows the pressure plate 11 to pass through the strap plate 22 and the strap plate attachment member 20.
Is separated from the flywheel 2 side.

In this case, the strap plate 22 is arranged further inward in the radial direction than the outermost peripheral portion of the pressure plate 11. Therefore, the space for the mounting structure of the pressure plate 11 to the clutch cover 10 does not make the entire clutch cover assembly 1 radially outward. [Other Embodiments] As shown in FIG. 4, the clip portion 31 may be continuously formed at the tip of one of the pair of strap plates 30a and 30b. This clip portion 31 is used for the strap plate 3
0b is bent toward the pressure plate 11 side, and the tip is formed in an arc shape. The outer peripheral portion presses the pressure plate 11. The other structure is the same as that of the above embodiment.

In such an embodiment, it is not necessary to separately provide a clip member and the structure is simplified.

[0018]

As described above, according to the present invention, since the pressure plate and the clutch cover are connected by the strap plate and the strap plate attaching member which are arranged radially inward of the outer peripheral portion of the pressure plate, the clutch cover assembly. The outer diameter of the solid can be reduced. In particular, it is effective when applied to a clutch cover assembly having a structure in which the end portion of the clutch cover is fixed to the outer peripheral surface of the flywheel and the flange portion of the end portion of the clutch cover is unnecessary.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional configuration diagram of a clutch cover assembly to which an embodiment of the present invention is applied.

FIG. 2 is a perspective partial view of the embodiment.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a diagram corresponding to FIG. 3 according to another embodiment of the present invention.

[Explanation of reference numerals] 1 clutch cover assembly 10 clutch cover 11 pressure plate 20 strap plate attachment member 20a attachment portion 20b bent portions 22a, 22b strap plate

Claims (1)

[Claims] 1. A structure for attaching a pressure plate to a clutch cover of a clutch cover assembly, comprising a bent portion fixed to an outer peripheral surface of the pressure plate, extending in an axial direction, and bent inward in a radial direction. And a strap plate having one end fixed to a bent portion of the strap plate mounting member and the other end extending in the rotational direction of the pressure plate fixed to a side surface extending inward in the radial direction of the clutch cover. And a pressure plate mounting structure for the clutch cover assembly.