JP2566891Y2 - Clutch release mechanism - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clutch release mechanism applied to an automobile or the like .

[0002]

2. Description of the Related Art An automobile clutch release mechanism is shown in FIG.
0, the release fork 4 is fixed by a fork support 40 fixed at a predetermined position in the clutch housing 16.
The release fork 41 and the fork support 40 are elastically connected to each other by a release retainer 42 fixed to the fork support 40 and formed at one end of the release fork 41. While the arm 43 is connected to the clutch release bearing 13, a force point portion 44 formed at the other end of the release fork 41 is engaged with the release cylinder 31 as a prime mover. Therefore, according to this clutch release mechanism,
When the release cylinder 31 is activated, the release fork 41 is released.
Is rotated clockwise in the figure, the release fork 41
Of the clutch release bearing 13
Is moved rightward in the figure, and the inner peripheral end of the diaphragm spring 7 is moved away from the pressure plate 6 in accordance with the movement of the diaphragm spring 7 to release the spring force of the diaphragm spring 7 acting on the pressure plate 6 to release the clutch. It can be cut (see JP-A-60-157519).

[0003]

However, in such a conventional example, since the fork support 40 and the release retainer 42 are both fastened and fixed to the inner wall 46 of the clutch housing 16 by bolts 45, the tightening is performed. The wearing operation must be performed in a narrow space of the clutch housing 16, and there is a problem that the operation is difficult. Therefore, it has been desired to provide a clutch release mechanism that can easily perform an assembling operation.

[0004] The present invention has been devised to meet this demand.

That is, in the present invention, an arm portion formed at one end of a release fork is connected to a clutch release bearing, while a force point portion formed at the other end of the release fork is engaged with a driving joint, and the arm of the release fork is engaged. fork support hydrofluoric fixed fulcrum pin attached to a predetermined position in the class <br/> pitch housing inner wall between the parts and the force point portion
The release fork is rotatably supported by the lock portion, and the release fork has elasticity.
In the clutch release mechanism which is adapted to support against at retainer, while fixed to the clutch housing inner wall of the fork support via a front cover, previously
A release retainer having an arcuate claw portion at its end
From the direction substantially perpendicular to the longitudinal direction of the release fork.
Release release so that it faces the outer peripheral surface of the fulcrum pin.
Attached to the click, attached to the release fork
The fulcrum pin is engaged with the hook of the fork support , and the claw of the release retainer is
It is characterized in that it is in contact with the arc-shaped head .

[0006]

The fulcrum pin of the release fork is pressed into the hook of the fork support by the elastic force of the claw portion of the release retainer attached to the release fork, and the release fork rotates smoothly without detaching from the fork support.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a sectional view showing an assembled state of a clutch, in which 1 is a crankshaft. A flywheel 2 is fixed to the crankshaft 1, and a clutch cover assembly 3 is attached to the flywheel 2. The clutch cover assembly 3 includes a flywheel 2
Clutch cover 4 fixed to the
A pressure plate 6 connected to the flywheel 2 via a strap plate 5, a diaphragm spring 7 whose outer peripheral end is supported by the clutch cover 4 and constantly presses the pressure plate 6 toward the flywheel 2. And a hook member 8 that connects the two. 9 is a clutch disk. In this clutch disc 9, a hub 10 is spline-fitted to an output shaft 11, and its facing 12 is sandwiched between the flywheel 2 and the pressure plate 6. Reference numeral 13 denotes a clutch release bearing. The clutch release bearing 13 is slidably fitted in a cylindrical guide portion 15 of a front cover 14. The inner peripheral end of the diaphragm spring 7 is engaged with the clutch release bearing 13.

The front cover 14 is provided on an inner wall 17 of a clutch housing 16 for partitioning a transmission (not shown).
Are fixed with bolts 18. This front cover 14
Beforehand, fork support 19 (see FIG. 8)
0, so that the work of fastening the fork support 19 in the clutch housing 16 is not required.
In the case of fixing the front cover 14 to which the fork support 19 is fixed to the inner wall 17, it is easier to secure the working space of the fastening jig than in the conventional operation of fixing the fork support 19 to the inner wall 17. Good workability.

A release fork 21 is engaged with a fork support 19 fixed to the inner wall 17 via the front cover 14. This release fork 21
As shown in FIGS. 2 to 4, a forked arm portion 22 is formed at one end and a power point portion 23 is formed at the other end, and a predetermined distance between the arm portion 22 and the power point portion 23 is formed. A fulcrum pin 24 is attached at a position, that is, substantially at the center, and an elastically deformable release retainer 25 (refer to FIG. 9) is attached to the fulcrum pin 24 by a shaft retaining ring 27.
And the release fork 21 configured as described above is
As shown in FIGS. 5 to 7, the fulcrum pin 24 is engaged with the hook 28 of the fork support 19, and the arc-shaped claw 29 of the release retainer 25 is attached to the arc-shaped head 30 of the fork support 19. Engaged. In addition, release
The claw portion 29 of the retainer 25 is
The fulcrum point is set substantially perpendicular to the longitudinal direction of the lead fork 21.
And extends to face the outer peripheral surface of the housing 21. As a result, the fulcrum pin 24 of the release fork 21 is pressed against the hook 28 of the fork support 19 by the elastic force of the release retainer 25 and is not rotatable from the hook 28 but is rotatably supported by the hook 28. You. The release fork 21 has its arm 22 engaged with the clutch release bearing 13 and its power point 23 engaged with a release cylinder 31 serving as a prime mover (see FIG. 1).

The clutch release mechanism comprises the clutch release bearing 13, the release fork 21, the release retainer 25, the fork support 19, the front cover 14 and the release cylinder 31.

According to this embodiment configured as described above,
When the force cylinder 23 of the release fork 21 is pressed leftward in the figure by the release cylinder 31, the release fork 21 is supported by the fork support 19 and smoothly rotates clockwise in the figure. The clutch release bearing 13 is moved rightward in the figure. As a result, the diaphragm spring 7 is deformed in a direction away from the pressure plate 6, and the spring force of the diaphragm spring 7, which presses the pressure plate 6 toward the flywheel 2, is released, and the clutch is disengaged.

As described above, in the present embodiment, the work of fastening the fork support 19 and the release retainer 25 in the clutch housing 16 is not required, so that the assembly operation of the clutch release mechanism is extremely easy as compared with the conventional example. Can be performed.

[0013]

As is apparent from the above description, according to the present invention, while the fork support is fixed to the inner wall of the clutch housing via the front cover, a release retainer having an arc-shaped claw at the tip is provided. The release fork is attached to the release fork so as to face the outer fixed surface of the fulcrum pin from a direction substantially perpendicular to the axis, the fulcrum pin attached to the release fork is engaged with the hook portion of the fork support, and the release retainer is mounted on the release fork. By configuring the claw portion to contact the arc-shaped head of the fork support, the work of fastening the fork support and the release retainer in the clutch housing can be omitted, and the assembly work of the clutch release mechanism can be omitted. it is possible to very easily, can reduce the number of assembly steps, such as an automobile, the self It is possible to improve the production efficiency of the car or the like.

[Brief description of the drawings]

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

FIG. 2 is a front view of a release fork.

FIG. 3 is a side view of the same.

FIG. 4 is a sectional view taken along the line AA of FIG. 2;

FIG. 5 is a front view showing an engagement state between a release fork and a fork support.

FIG. 6 is a side view of the same.

FIG. 7 is a sectional view taken along the line BB of FIG. 5;

FIG. 8 is a view showing a fork support, and FIG.
8 is a plan view of the fork support, and FIG. 8B is a side view of the fork support.

FIG. 9 is a view showing a release retainer, and FIG.
9B is a front view of the release retainer, FIG. 9B is a plan view of the release retainer, and FIG. 9C is a side view of the release retainer.

FIG. 10 is a sectional view of a clutch device showing a conventional example.

[Explanation of symbols]

13 ... clutch release bearing, 14 ... front cover, 16 ... clutch housing, 17 ... inner wall, 19 ...
Fork support, 21: release fork, 22: arm, 23: force point, 24: fulcrum pin, 25: release retainer, 28: hook, 29: claw, 30: head
Part, 31 ... prime mover (release cylinder).

Claims (1)

(57) [Scope of request for utility model registration] An arm portion formed at one end of a release fork is connected to a clutch release bearing, and a force point portion formed at the other end of the release fork is engaged with a driving node, so that an arm portion of the release fork and a force point are connected. A fulcrum pin mounted at a predetermined position between the support portion and the release fork is rotatably supported by a hook portion of a fork support fixed to the inner wall of the clutch housing, and the fork support and the release fork are pushed by a release retainer having elasticity.
In the clutch release mechanism that is attached and supported , the fork support is fixed to the inner wall of the clutch housing via a front cover, while an arc-shaped tip is provided.
Release the release retainer with the claw and release the claw.
Outside the fulcrum pin from a direction substantially perpendicular to the longitudinal direction of the fork.
Attach to release fork so that it faces the circumference
The fulcrum pin attached to the release fork is engaged with the hook portion of the fork support , and the claw portion of the release retainer is connected to the arc-shaped head of the fork support.
The clutch release mechanism is characterized in that it comes into contact with the part .