JPH0610225Y2 - Clutch yoke dropout prevention device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a device for preventing a clutch yoke, which engages and disengages a clutch, from falling out of the sleeve.

[Conventional technology]

As shown in FIGS. 3 to 5, there is known a clutch in which a clutch member 3 for connecting and disconnecting an input side 1 and an output side 2 is brought into contact with and separated from by sliding a sleeve 5 with a clutch yoke 4.

That is, the clutch yoke 4 is swingably supported about the pivot 6, and the tip ends 2a and 4a of the clutch yoke 4 are in contact with the protrusions 5a provided on both sides of the sleeve 5, and the movable part 7a of the cylinder 7 is attached to the other end 4b. The cylinder 7 swings the clutch yoke 4 to allow the sleeve 5 to slide.

With such a structure, the clutch yoke 4 and the sleeve 5 may be disengaged due to vehicle body vibration or malfunction, and for example, as shown in FIGS. 6 and 7, a spring 8 is used to prevent disengagement.

That is, as shown in FIG. 8, the spring 8 is formed by continuously and integrally forming the bent portions 8b on both sides of the semi-circular portion 8a. The semi-circular portion 8a is loosely fitted in the sleeve 5 and the end of the bent portion 8b is formed. The portion 8c is fitted into the hole 9 of the protrusion 4a, and the tip 2 or the portion 4a is pressed against the protrusion 5a.

[Problems to be solved by the invention]

With such a structure, since the hole 9 must be formed in the protrusion 5a of the sleeve 5 and the spring 8 is bent after assembly, the spring 8 may come off if the bending condition is not good, which makes the assembly work difficult. It becomes troublesome.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a clutch yoke dropout prevention device for a clutch, which can solve the above problems.

[Means and Actions for Solving Problems]

The clutch yoke 4 includes a rod-shaped main body 20 and the rod-shaped main body 2.
0 is provided with a pair of L-shaped pieces 21 and 21 integrally provided at one end in the longitudinal direction, and the tip portions of the pair of L-shaped pieces 21 and 21 are the tip portions 2a and 4a and 4a. The upper portions of the character-shaped pieces 21, 21 are formed into a pair of shoulder portions 4c, 4c projecting from both side surfaces 20a of the rod-shaped body 20, and the longitudinal intermediate portion of the clutch yoke 4 is swingably supported by a pivot 6. And the clutch yoke 4
A pair of protrusions 5a, 5a of the sleeve 5 are provided on the opposite side of the pivot 6 supporting portion at the tip ends 2 and 4a, 4a of the sleeve 5 in the swinging direction.
The intermediate portion 8d of the spring 8 is hooked and held by the pivot 6 supporting portion of the rod-shaped main body 20 of the clutch yoke 4 opposite to the pivoting direction and a pair of shoulder portions 4c, and both ends of the spring 8 are supported. The portions 8e, 8e are passed through the tip 2 of the clutch yoke 4 and between the portions 4a, 4a, and are locked to the pair of projections 5a, 5a of the sleeve 5 to bias the clutch yoke 4 by swinging to swing the tip 2a, 4a, 4a. The protrusions 5a, 5a of the sleeve 5
A device to prevent the clutch yoke from falling out of the clutch pressed against.

As a result, the spring force of the spring 8 can be used to press the tip ends 2a, 4a, 4a against the protrusions 5a, 5a to prevent the spring 5 from falling off, and the spring 8 can be bent in advance and attached to form a hole. As a result, it is not necessary to fold or fold it at the time of assembling, which simplifies the assembling work.

〔Example〕

As shown in FIGS. 1 and 2, the clutch yoke 4 is provided with a pair of L-shaped pieces 21 and 21 integrally at one longitudinal end of a rod-shaped main body 20 to form tip ends 2a and 4a. The letter-shaped piece 21 projects laterally beyond both side surfaces 20a, 20a of the rod-shaped body 20, and the upper portion of the L-shaped piece 21 becomes a shoulder portion 4c which projects laterally beyond both side surfaces 20a, 20a of the rod-shaped body 20. A recess 22 into which the movable portion 7 of the cylinder 7 is fitted is formed in the other end of the rod-shaped body 20 in the longitudinal direction, that is, the other end of the clutch yoke 4, and the pivot 6 is fitted in one end of the rod-shaped body 10 in the longitudinal direction. A concave portion 23 is formed so as to fit therewith.

Connect the middle portion 8d of the spring 8 to the tip 2 of the clutch yoke 4.
Further, the end portions 8e on both sides are hooked on the shoulder portions 4c of the portions 4a, 4a.
8e is engaged with the protrusion 5a of the sleeve 5 to urge the clutch yoke 4 to swing about the pivot 6, and the tip 2 or the portion 4
The a and 4a are pressed against the protrusion 5a.

In other words, the intermediate portion 8d of the spring 8 has a U-shaped bent portion 10
And both side bent portions 11 and 11, the both end portions 8e,
8e is composed of an oblique straight line portion 12 continuous with the both side bent portions 11 and 11, and an L-shaped portion 13. The U-shaped bent portion 10 is fitted into the shoulder portion 4c of the clutch yoke 4, and the L-shaped portion 13 is It is engaged with the protrusion 5a.

[Effect of device]

Utilizing the spring force of the spring 8, the tip 2 or the portion 4
The a and 4a can be pressed against the protrusions 5a and 5a to prevent the springs from falling off, and the spring 8 can be bent and attached in advance so that holes need not be machined or bent at the time of assembly, so that the assembling work is simple. Become.

[Brief description of drawings]

1 and 2 are a front view, a side view, FIG. 3, FIG. 4 and FIG. 5 showing an embodiment of the present invention, and FIG.
Front view, cross-sectional view, FIG. 6 and FIG. 7 are front views of a conventional example,
A side view and FIG. 8 are perspective views of the spring. 4 is a clutch yoke, 4a is a tip two-forked portion, 4c is a shoulder portion,
5 is a sleeve, 5a is a protrusion, 8 is a spring, 8d is an intermediate portion, and 8e is a tip portion on both sides.

Claims (1)

[Scope of utility model registration request] 1. A clutch yoke 4 is provided with a rod-shaped main body 20 and a pair of L-shaped pieces 21 and 21 integrally provided at one end of the rod-shaped main body 20 in the longitudinal direction.
A shape in which the tips of the tips 1 and 21 serve as tips 2 or 4a and 4a, and the upper portions of the pair of L-shaped pieces 21 and 21 serve as a pair of shoulders 4c and 4c protruding from both side surfaces 20a of the rod-shaped body 20. The pivot yoke 6 swingably supports the intermediate portion of the clutch yoke 4 in the longitudinal direction, and the clutch yoke 4
A pair of protrusions 5a, 5a of the sleeve 5 are provided on the opposite side of the pivot 6 supporting portion at the tip ends 2 and 4a, 4a of the sleeve 5 in the swinging direction.
The intermediate portion 8d of the spring 8 is hooked and held by the pivot 6 supporting portion of the rod-shaped main body 20 of the clutch yoke 4 opposite to the pivoting direction and a pair of shoulder portions 4c, and both ends of the spring 8 are supported. The portions 8e, 8e are passed through the tip 2 of the clutch yoke 4 and between the portions 4a, 4a, and are locked to the pair of projections 5a, 5a of the sleeve 5 to bias the clutch yoke 4 by swinging to swing the tip 2a, 4a, 4a. The protrusions 5a, 5a of the sleeve 5
Clutch yoke drop-out prevention device for the clutch, which is characterized by being pressed against.