JPH08105457A - Clutch release device - Google Patents

Abstract

(57) [Summary] [Purpose] To simplify the structure and increase the rigidity of the release cylinder, and to reduce the influence of heat to prolong the service life. [Structure] A clutch operating cylinder 7 is integrally formed inside an opening 9 of a clutch housing 8.
This allows you to separate it from the exhaust pipe,
And the clutch housing is a kind of heat shield plate,
Since the clutch operating cylinder is protected from heat and the clutch operating cylinder 7 is inside the clutch housing 8, flying stones do not directly hit the clutch operating cylinder 7 and the useful life of the clutch releasing device is improved. Can be long.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a clutch release device.

[0002]

2. Description of the Related Art First, an outline of a clutch release device will be described. In FIG. 4, a clutch disc 3 is sandwiched between a flywheel 1 and a pressure plate 2, and an elastic force of a diaphragm spring 5 rotatably supported by a clutch cover 4 that rotates integrally with the flywheel 1. Thus, the pressure plate 2 is pressed and the clutch is always engaged. When disconnecting the clutch, one end of the clutch release fork 6, which is swingably supported by the clutch housing 8, is attached to the clutch housing 8 by the piston rod 10 of the clutch operating cylinder 7. When pushed, the diaphragm spring 5 is pushed and the clutch is disengaged. A device for connecting and disconnecting the clutch is called a clutch release device.

In the clutch operating cylinder 7 of the conventional clutch release device, as shown in FIG. 7, a mounting portion 11 is integrally provided on a clutch housing 8 and the clutch operating cylinder 7 is mounted on the mounting portion 11.

As another conventional example, in Japanese Utility Model Laid-Open No. 3-326, a hydraulic cylinder is formed in an oil jacket which rotates integrally with a flywheel, and a pressure plate in which a piston is integrally formed is attached to the hydraulic cylinder. However, it is disclosed that the clutch disc is pressed by directly pressing the pressure plate by hydraulic pressure.

Further, in Japanese Utility Model Laid-Open No. 3-127833, a boss portion of a clutch housing is pivotally supported on a propulsion shaft, and a cylinder shaft is fitted with a predetermined gap between the boss portion and an outer peripheral surface of the boss portion.
It is disclosed that an annular piston is inserted into the annular gap and a release bearing attached to the tip of the annular piston pushes the end of the clutch release fork.

[0006] In Japanese Utility Model Laid-Open No. 2-101129, a cylinder is provided on a member that axially supports a boss portion on an input shaft, and a piston inserted in the cylinder is slidably fitted to the outer periphery of the boss portion. There is disclosed a structure in which an existing arm portion is joined and a diaphragm spring is directly pushed by a release bearing provided at the tip of this arm portion.

In Japanese Utility Model Laid-Open No. 60-107670, a release cylinder is provided so as to project to the rear part of the clutch housing (a part opposite to the opening), and a piston rod and a clutch release fork mounted on the release cylinder are provided. It is disclosed that the engaging portion with the end portion of the is housed in the clutch case.

[0008]

SUMMARY OF THE INVENTION In the above conventional example,
The release structures disclosed in Japanese Utility Model Laid-Open No. 3-326, Japanese Utility Model Laid-Open No. 3-127833, and Japanese Utility Model Laid-Open No. 2-101129 all have a structure in which a member axially supported by a shaft is moved in the axial direction. Since the clutch release mechanism is housed inside the clutch housing, there is no problem of wear due to adhesion of mud or the like and damage due to flying stones, but there is a problem of complicated structure.

In the conventional example shown in FIG. 4, as shown in FIG. 5, the release cylinder 7 is attached in a state of protruding from the side surface of the clutch housing 8. However, there is a problem that the release cylinder collides with and damages it, and due to the arrangement of the equipment, if it is installed close to a high temperature part such as the exhaust pipe, the release cylinder will be heated and the packing part There is a problem that the life of such as is shortened. Also, the one disclosed in Japanese Utility Model Laid-Open No. 60-107670 has the same problem because the release cylinder is mounted in a protruding state.

According to the present invention, the structure is simplified to increase the rigidity of the release cylinder so that stones flying during traveling will not be damaged even if they collide with the release cylinder, and the influence of heat such as the exhaust pipe is reduced. And a clutch release device having a long useful life.

[0011]

Means for Solving the Problems According to the present invention for solving the above problems, a clutch disc is sandwiched between a flywheel and a pressure plate, and a clutch cover that rotates integrally with the flywheel is rotated. The elastic force of the diaphragm spring, which is movably supported, presses the pressure plate to connect the clutch, and one end of the clutch release fork, which is swingably supported on the clutch housing, is attached to the clutch housing. In the clutch release structure in which the clutch is disengaged by pushing with the piston rod attached to the cylinder to push the diaphragm spring, the clutch operating cylinder is integrated inside the opening of the clutch housing. Form, characterized in that the engaging end of the clutch release fork and a piston rod attached to the clutch operating cylinder and the clutch release fork is engaged accommodated in the clutch housing.

In the clutch release device, a clutch operating cylinder is integrally formed on the outer wall of the opening of the clutch housing.

[0013]

Since the present invention is constructed as described above, it has the following effects. That is, since the clutch operating cylinder is integrally formed inside the opening of the clutch housing, the clutch operating cylinder does not project and can therefore be separated from the exhaust pipe, and the clutch housing serves as a kind of heat shield plate. . Further, since the clutch operating cylinder is inside the clutch housing, flying stones do not directly hit the clutch operating cylinder. And
Since the clutch housing and the clutch operating cylinder are integrated, the structure can be simplified.

Further, since the clutch operating cylinder is integrally formed on the outer wall of the opening of the clutch housing, the clutch operating cylinder does not project from the clutch housing and can therefore be separated from the exhaust pipe. Further, since a part of the clutch housing is a part of the clutch operating cylinder, the rigidity of the clutch operating cylinder can be increased, and the cylinder itself will bend even if a stepping stone collides with it. There is no such thing. Since the clutch housing and the clutch operating cylinder are integrated, the structure can be simplified.

[0015]

EXAMPLE An example of the present invention will be described below. FIG. 1 shows an example of the clutch release device shown in FIG.
An example in which one embodiment of the present invention is applied to this clutch release device is shown. That is, the clutch release device sandwiches the clutch disc 3 between the flywheel 1 and the pressure plate 2, and rotates the clutch cover 4 that rotates integrally with the flywheel 1 by the wiring 16 via the pin 15. Due to the elastic force of the diaphragm spring 5 which is movably supported, the pressure plate 2 is pressed and the clutch is always engaged.

A clutch operating cylinder 7 is integrally provided along the inside of the opening 9 of the clutch housing 8. Then, the cylinder inner surface 701 is machined into a through hole so that the cylinder surface of the clutch operating cylinder 7 can be machined, and a female screw is cut at the end to screw the lid plug 12 into the cylinder surface. I am trying to form. Also, when assembling the piston rod 10,
The length L of the clutch housing 8 is not limited by inserting the piston rod 10 into the cylinder inner surface 701 from the 12 side and then screwing the lid plug 12 into the cylinder inner surface 701.
Can be shortened to make the clutch housing 8 smaller.

A clutch release fork 6 is swingably supported by the clutch housing 8, and an engaging portion 14 between one end of the clutch release fork 6 and a tip of a piston rod 10 is provided in the clutch housing 8. Therefore, wear of the engaging portion 14 due to adhesion of mud or the like is reduced. Reference numeral 13 is a bellows provided so that dust and the like do not enter the cylinder inner surface 701. By pushing the end of the clutch release fork 6 with the tip of the piston rod 10, the diaphragm spring 5 is pushed through the release bearing 17 to disconnect the clutch.

The operation of the present embodiment thus constructed will be described below. Since the clutch operating cylinder 7 is integrally formed inside the opening 9 of the clutch housing 8, the clutch operating cylinder 7 does not protrude from the outer surface of the clutch housing 8. Therefore, the arrangement of various devices can be relaxed, the clutch operating cylinder 7 can be separated from the exhaust pipe, and the clutch housing 8 serves as a kind of heat shield plate.

Further, since the clutch operating cylinder 7 is integrally formed inside the clutch housing 8, the rigidity of the clutch operating cylinder 7 is increased and the clutch operating cylinder 7 is increased.
Even if the flying stone collides with the clutch housing 8 forming a part of the clutch operating cylinder 7, the clutch operating cylinder 7 does not bend, and the flying stone directly contacts the clutch operating cylinder 7.
It does not hit the ting cylinder 7. Further, since the clutch housing 8 and the clutch operating cylinder 7 are integrated, the structure can be simplified.
In addition, by forming the inner surface 701 of the cylinder as a through hole along the inner surface of the opening 9, the mold for casting the clutch housing 8 can be a simple mold that does not require a core or the like. Machining the inner surface 701 can also be simplified.

Then, the clutch operating cylinder 7 is integrally formed inside the clutch housing 8,
Since the engaging portion 14 is provided in the clutch housing 8, wear of the engaging portion 14 due to adhesion of mud and the like is reduced, and the length of the clutch release fork 6 is shortened to reduce the clutch release fork 6. The rigidity can be increased, and the clutch release fork 6 can be reduced in weight and size.

Next, another embodiment will be described with reference to FIG. The clutch relay shown as an example in this embodiment
Since the zoom device is also the same as that shown in FIG. 1, the same parts are designated by the same reference numerals and the description thereof will be omitted. This figure 2
The major difference between the embodiment shown in FIG. 1 and the embodiment shown in FIG. 1 is that the clutch operating cylinder 7 is provided outside the opening 9 of the clutch housing 8.

That is, the clutch operating cylinder 7 is integrally provided along the outer surface of the opening 9 of the clutch housing 8, and the piston rod 10 can be inserted into the cylinder 7 from the outside of the clutch housing 8. Therefore, the inner surface 701 of the cylinder has a bottomed hole, the lid plug 12 (FIG. 1) is omitted, and the number of parts to be assembled is reduced.

The distance R from the center of the flywheel 1 to the center of the clutch operating cylinder 7 is
In order to shorten the length of the clutch release fork 6 to increase its rigidity and to keep the distance from the exhaust pipe, the clutch housing 8 is made to have a horizontal wall in the same manner as the embodiment shown in FIG. And clutch release
The piston 6 is penetrated so that the tip of the piston rod 10 and the end of the clutch release fork 6 are engaged by the engaging portion 14. 13 is a bellows.

The operation of the present embodiment thus constructed will be described below. Since the clutch operating cylinder 7 is integrally formed along the outer surface of the opening 9 of the clutch housing 8, the clutch operating cylinder 7 does not largely project from the outer surface of the clutch housing 8 as shown in FIG. Therefore, the arrangement of various devices can be relaxed, and the clutch operating cylinder 7 can be separated from the exhaust pipe.

Further, since the clutch operating cylinder 7 is formed integrally with the clutch housing 8, the rigidity of the clutch operating cylinder 7 is increased, and flying stones cause the clutch operating cylinder 7 to move.
The clutch operating cylinder 7 will not bend even if it collides with.

Since the clutch housing 8 and the clutch operating cylinder 7 are integrated, the structure can be simplified. Further, since the clutch operating cylinder 7 is integrally provided along the outer surface of the opening 9 of the clutch housing 8, the inner surface of the cylinder 7
Since the direction of 01 is the same as the direction of the opening 9, the mold for casting the clutch housing 8 can be simplified. In this embodiment as well, the length of the clutch release fork 6 is shortened to increase the rigidity, and the clutch release fork 6 can be downsized to reduce the weight.

[0027]

As described in detail above, according to the present invention, since the clutch operating cylinder is integrally formed inside the opening of the clutch housing, the clutch operating cylinder can be separated from the exhaust pipe and the clutch housing is a kind of heat. The shield plate protects the clutch operating cylinder from heat, prevents heat damage to the packing of the clutch operating cylinder, and prolongs the useful life of the clutch release device.

Further, since the clutch operating cylinder is inside the clutch housing, the stepping stone does not directly hit the clutch operating cylinder, the clutch operating cylinder is not damaged by the stepping stone, and the clutch releasing device is durable. The life can be extended.

Further, since the clutch housing and the clutch operating cylinder are integrated, the structure can be simplified, the number of parts can be reduced, the assembly time can be shortened, and the productivity can be improved. And a piston rod attached to the clutch operating cylinder,
Since the engagement end of the clutch release fork that engages with the clutch release fork is housed in the clutch housing, dirt does not adhere and wear of the engagement part is reduced to prolong the useful life of the clutch release device. You can

Further, since the clutch operating cylinder is integrally formed on the outer wall of the opening of the clutch housing, the clutch operating cylinder does not largely project from the clutch housing and is separated from the exhaust pipe to reduce the influence of heat, and the clutch release cylinder is released. The service life of the device can be extended. In addition, since a part of the clutch housing becomes a part of the clutch operating cylinder and the rigidity is high, the cylinder itself does not bend even if a flying stone collides,
The service life of the clutch release device can be extended. Since the clutch housing and the clutch operating cylinder are integrated, the number of parts is reduced, the assembly time is shortened, and the productivity can be improved.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

FIG. 2 is a vertical sectional view showing another embodiment of the present invention.

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a vertical sectional view of a conventional example.

5 is a left side view of FIG. 4. FIG.

[Description of sign]

 1 Flywheel 2 Pressure Plate 3 Clutch Disc 4 Clutch Cover 5 Diaphragm Spring 6 Clutch Release Fork 7 Clutch Operating Cylinder 8 Clutch Housing 9 Opening 10 Piston Rod

Claims (2)

[Claims] 1. A clutch disc is sandwiched between a flywheel and a pressure plate, and the pressure plate is pressed by the elastic force of a diaphragm spring rotatably supported by a clutch cover that rotates integrally with the flywheel. By connecting the clutch, by pushing one end of the clutch release fork swingably supported in the clutch housing with a piston rod attached to the clutch operating cylinder attached to the clutch housing, by pushing the diaphragm spring, In a clutch release structure for disconnecting a clutch, a clutch operating cylinder is integrally formed inside an opening of a clutch housing, and a piston mounted on the clutch operating cylinder. A clutch release device, wherein an engaging end of a clutch release fork with which a rod and the clutch release fork are engaged is housed in a clutch housing. 2. A clutch disc is sandwiched between a flywheel and a pressure plate, and the pressure plate is pressed by the elastic force of a diaphragm spring rotatably supported by a clutch cover that rotates integrally with the flywheel. By connecting the clutch, by pushing one end of the clutch release fork swingably supported in the clutch housing with a piston rod attached to the clutch operating cylinder attached to the clutch housing, by pushing the diaphragm spring, In a clutch release structure for disconnecting a clutch, a clutch operating device is formed integrally with an outer wall of an opening of a clutch housing.