JP2000055075A - Clutch cover assembly with hanger bolt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the installation of a hanger bolt from affecting a device for attaching a diaphragm spring to a cover and the shape of the diaphragm spring. SOLUTION: Each of hanger bolts 30 which is located diametrically outside of the outer periphery of a diaphragm spring 40, allows the associated curved part 23 of a cover 10 to slidably pierce therethrough and is screwed into the associated protrusion of the outer periphery of a pressure plate 20. With this arrangement, an urging force applied from the diaphragm spring 40 to the pressure plate 20 can be transmitted to the cover 10 through the hanger bolt 30 in order to hold the cover 30. The hanger bolt 30 desirably allows the curved part 12 of the flange 11 of the cover 10 which defines a space for accommodating a strap 50 to slidably pierce.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clutch cover assembly for a friction clutch interposed between an automobile engine and an input shaft of a gear transmission, and more particularly to a clutch cover assembly with suspension bolts. Things.

[0002]

4 and 5 show a conventional clutch cover assembly 100 with suspension bolts. 4 and 5, 110 is a cover, 120 is a pressure plate,
130 is a hanging bolt, 140 is a diaphragm spring, 150 is a strap, 160 is a pivot ring, 1
70 is a set rivet, and 180 is a retract spring.

[0003] A cover 110 has a flange 111 on its outer periphery.
Is connected to a flywheel provided on the engine and located on the left side of the flange 111 in FIG. 5 by a bolt (not shown).

The strap 150 is accommodated in a space formed by the bent portion 112 of the flange 111, is connected at one end to a protrusion 121 on the outer periphery of the pressure plate 120 by a bolt, and is bent at the other end.
2 by rivets. Thereby, the pressure plate 120 rotates integrally with the cover 110, but can move in the axial direction.

[0005] A diaphragm spring 140 and two pivot rings 160 are connected to 15 set rivets 17.
0, the diaphragm plate 140 normally urges the pressure plate 120 toward the flywheel from behind. The retract spring 180 is connected to the protrusion 121 of the pressure plate 120 together with one end of the strap 150, and the diaphragm spring 140 and the pressure plate 1
Maintain contact with the back of 20.

The three suspension bolts 130 are attached to the cover 110.
The diaphragm spring 140 is slidably penetrated and screwed to the pressure plate 120. The urging force applied to the pressure plate 120 from the diaphragm spring 140 is transmitted to the cover 110 and received by the cover 110. In the clutch cover assembly in which the suspension bolt 130 is not installed, the strap is deformed by the urging force of the diaphragm spring 140 or the vibration of the pressure plate 120 during the transportation of the clutch cover assembly, or the clutch cover assembly is In view of the fact that the cover must be connected to the flywheel by bolts while bending the diaphragm spring when attaching to the wheel, in consideration of the problem that the cover and the flywheel may be connected poorly, it is necessary to suspend the suspension to solve this problem. A bolt 130 is installed, and the suspension bolt 130 is
10 is removed after connecting 10 to the flywheel.

[0007]

However, in the conventional clutch cover assembly with suspension bolts, the suspension bolts 130 and the set rivets 170 are arranged on the same circumference, and the number of set bolts is equal to the number of suspension bolts. There is a problem that the number of rivets 170 must be reduced, the strength and rigidity of the diaphragm spring 140 attached to the cover 110 decrease, and the release characteristics of the clutch cover assembly deteriorate.

A structure in which a suspension bolt is slidably penetrated through a cover and a diaphragm spring and screwed into a pressure plate is disclosed in US Pat.
There is a problem that it is difficult to apply the clutch cover assembly in which the zero and two pivot rings 160 are attached to the cover 110 by a large number of bent claws formed integrally with the cover.

An object of the present invention is to provide a clutch cover assembly with suspension bolts that solves the above problems.

[0010]

According to a first aspect of the present invention, there is provided a cover provided with a flange on an outer periphery for coupling to a flywheel provided in an engine, and a shaft which rotates integrally with the cover. A pressure plate coupled to the cover by a strap so as to be able to move in a direction, a diaphragm spring attached to the cover and for urging the pressure plate toward the flywheel, and transmitted from the diaphragm spring to the pressure plate. A suspension bolt provided with a suspension bolt for receiving the urging force by the cover, wherein the suspension bolt is slidable on the cover of the cover radially outside the outer periphery of the diaphragm spring. Penetrated and said pressure Is bolted clutch cover assembly hanging, characterized in that screwed to the rate.

According to a second aspect of the present invention, there is provided the clutch cover assembly with the suspension bolt according to the first aspect, wherein the strap is housed in a space formed by a bent portion of the flange of the cover. The hanging bolt is slidably penetrated through the bent portion of the flange of the cover, and is a clutch cover assembly with a hanging bolt.

[0012]

1 to 3 show a clutch cover assembly with hanging bolts according to the invention of the present application. Figure 1
3, reference numeral 10 denotes a cover, 20 denotes a pressure plate, 30 denotes a suspension bolt, 40 denotes a diaphragm spring, 50 denotes a strap, 60 denotes a pivot ring, and 80 denotes a retract spring.

The cover 10 has a flange 11 on its outer periphery,
It is connected to a flywheel provided on the engine and located on the left side of the flange 11 in FIG. 2 by a bolt (not shown).

Each of the four straps 50 is accommodated in a space formed by the four bent portions 12 of the flange 11, and each strap is connected at one end to a projection 21 on the outer periphery of the pressure plate 20 by a bolt. The other end is connected to the bent portion 12 by rivets. As a result, the pressure plate 20 covers the cover 1
Although it rotates together with 0, it can move in the axial direction.

The diaphragm spring 40 and the two pivot rings 60 are integrally formed on the cover 10.
It is attached to the cover 10 by six (not limited to sixteen) bending claws 13, and the diaphragm spring 40 normally urges the pressure plate 20 from behind to the flywheel side. The retract spring 80 is coupled to the protrusion 21 of the pressure plate 20 together with one end of the strap 50, and maintains contact between the diaphragm spring 40 and the rear surface of the pressure plate 20.

The length of each bent portion 12 of the cover 10 in the circumferential direction is set longer than the length necessary for accommodating the strap 50, and the four suspension bolts 30 are arranged radially from the outer periphery of the diaphragm spring 40. Placed outside,
The cover 10 is slidably penetrated through the bent portion 12 of the cover 10 and is screwed to a protrusion 22 on the outer periphery of the pressure plate 20. To catch it.

As is apparent from FIGS. 1 to 3, since the suspension bolts 30 are arranged radially outside the outer periphery of the diaphragm spring 40, the presence of the suspension bolts 30 depends on the shape of the diaphragm spring 40 and the bending thereof. It does not affect the number of the claws 13 at all. Therefore, the installation of the suspension bolts 30 does not degrade the characteristics of the diaphragm spring 40 or reduce the strength and rigidity of the diaphragm spring 40 attached to the cover.

Further, the suspension bolt 30 is slidably penetrated through the bent portion 12 of the flange 11 of the cover 10 forming a space for accommodating the strap 50, so that the suspension bolt 30 is located near the strap 50. ,
The deformation of the strap 50 can be more reliably prevented.

As described above, the suspension bolt is slidably penetrated radially outside the outer periphery of the diaphragm spring from the outer periphery of the diaphragm spring and is screwed into the pressure plate. The configuration in which the suspension bolt is slidably penetrated through the bent portion of the flange can also be applied to the clutch cover assembly shown in FIGS.

[0020]

As described above, the clutch cover assembly with suspension bolts according to the invention of this application does not restrict the device for attaching the diaphragm spring to the cover or the shape of the diaphragm spring by the suspension bolts. Therefore, the mounting strength and rigidity of the diaphragm spring 40 to the cover are not reduced, and the characteristics of the diaphragm spring 40 are not deteriorated.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a clutch cover assembly with suspension bolts according to the invention of this application.

FIG. 2 is a sectional view taken along line 2-2 in FIG.

FIG. 3 is a partial view seen from the direction of arrow 3 in FIG. 1;

FIG. 4 is a partially cutaway front view of a conventional clutch cover assembly with hanging bolts.

FIG. 5 is a sectional view taken along line 5-5 in FIG.

[Description of sign]

 DESCRIPTION OF SYMBOLS 10 ... Cover 11 ... Flange 12 ... Bending part 13 ... Bending claw part 20 ... Pressure plate 21, 22 ... Projection 30 ... Hanging bolt 40 ... Diaphragm spring 50 ..Strap 60 ・ ・ ・ Pivot ring 80 ・ ・ ・ Retract spring

Claims (2)

[Claims] 1. A cover having an outer periphery provided with a flange for coupling with a flywheel provided in an engine, and a pressure coupled to the cover by a strap so as to rotate integrally with the cover but move in an axial direction. A plate, a diaphragm spring attached to the cover and biasing the pressure plate toward the flywheel side, and a suspension bolt for receiving the biasing force transmitted from the diaphragm spring to the pressure plate by the cover. In the clutch cover assembly with suspension bolts provided, the suspension bolts are slidably penetrated through the cover of the cover radially outside the outer periphery of the diaphragm spring and screwed to the pressure plate. Characteristic hanging Clutch cover assembly with bolts. 2. The clutch cover assembly with hanging bolts according to claim 1, wherein the strap is housed in a space formed by a bent portion of the flange of the cover,
The hanging bolt is slidably penetrated through the bent portion of the flange of the cover. A clutch cover assembly with hanging bolts.