JPS6137859Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement in the clutch control mechanism.

Conventionally, a clevis, which is one of the elements constituting this type of control mechanism, has a pair of pin holes having the same inner diameter formed at its tip.

That is, the clevis connects the base side to the push rod of the slave cylinder, inserts one end of the clutch release lever into the tip, and inserts the clevis into the pin hole of the clevis and the pin hole of the clutch release lever.・The pin was inserted.

However, in a clutch control mechanism where such a clevis connects the slave cylinder push rod and the clutch release lever, the slave cylinder is actuated and the reciprocating movement of the push rod causes When driving the clutch release lever,
The clevis pin contacts the clevis pin hole and the clutch release lever pin hole and wears out, making it difficult to maintain proper connection between the slave cylinder's push rod and the clutch release lever. There was a risk that the mechanism that reliably controls the clutch would be compromised.

This idea prevents wear on the clevis pin,
To provide a clutch control mechanism that maintains a proper connection between a slave cylinder push rod and a clutch release lever.

With these issues in mind, the clutch control mechanism of this invention is bent into a roughly U-shape, connects the push rod of the slave cylinder at the base, and has a pair of pin holes formed on a common axis at the tip. , a clevis forming a stopper surface on at least one of the pin holes, a clevis pin having a notch corresponding to the stopper surface and fitted into the pin hole, and the clevis pin having a notch step corresponding to the stopper surface;
It includes a clutch release lever that fits over the pin, and a rubber bushing that is disposed between the clevis pin and the clutch release lever.

Hereinafter, preferred specific examples of the clutch control mechanism according to this invention will be explained with reference to the drawings.

1 and 2 show a tenth embodiment of the clutch control mechanism of this invention.

The clutch control mechanism 10 is approximately U
The push rod 31 of the slave cylinder 30 is connected to the base, and a pair of pin holes 13 and 15 are formed on a common axis at the tip, and at least one of the pin holes 13 and 15 is bent. A clevis 11 forming a stopper surface 14, a clevis pin 12 having a cutout step 19 corresponding to the stopper surface 14 and fitted into the pin holes 13, 15, and a clevis pin 12 that is fitted into the pin holes 13, 15. Clutch release lever 4 that can be fitted
1, its clevis pin 12 and its clutch
The rubber bush 22 is arranged between the release lever 41 and the rubber bush 22.

The clevis 11 is bent into a substantially U-shape from a copper plate or the like, and a screw hole 16 is formed at the base side, that is, the bent part, and a circular hole is formed at one of its tips, that is, the lower part. A crescent-shaped pin hole 13 with a stopper surface 14 is formed on the other side, that is, the upper part, and the pin holes 13,
15 is formed on the distal end side on the common axis.

The clevis pin 12 includes a head 17 and a shank portion 18, and a cutout step 19 is formed by cutting out the side surface of the shank portion 18 on the distal end side.

That is, the clevis pin 12 fits into the pin holes 15 and 13 formed in the clevis 11 described above.
The rear end of the shank portion 18 is formed into a circular cross section, and the distal end thereof is formed into a crescent shape by the notch step 19 so that it can be fitted into the shank.

Furthermore, a clip hole 20 is formed through the distal end of the clevis pin 12 so as to be parallel to the side surface of the notch step 19.

Clevis pin 12 thus formed
is inserted into the pin holes 13, 15 of the clevis 11, and then one straight leg 23 of the retainer clip 21 is passed through the clip hole 20 and is fixed to the clevis 11.

The clutch release lever 41 has its base fixedly connected to a clutch release shaft (not shown) disposed in the clutch housing 40, and its tip fitted into its clevis pin 12 so as to be rotatable. is connected to.

A rubber bushing 22 is fitted around the shank portion 18 of the clevis pin 12 and is positioned between the clevis pin 12 and the clutch release lever 41.

Of course, the rubber bushing 22 is made of a wear-resistant material and is rotatably fitted into the shank portion 18 of the clevis pin 12.

Next, the clevis 11 thus formed
Slave and clevis pin 12
A method of connecting the push rod 31 of the cylinder 30 and the clutch release lever 41 disposed on the clutch housing 40 will now be described.

The tip of the push rod 31 of the slave cylinder 30 bolted to the frame 50 is threaded in advance, and a lock nut 34 is screwed into the tip of the push rod 31.

Therefore, the screw hole 16 of the clevis 11 is screwed into the tip of the push rod 31, the clevis 11 is rotated to the proper position, and the lock nut 34 is attached to the clevis 11 side.

One end of the clutch release lever 41 is inserted into the tip of the clevis 11 thus attached.

Of course, there is a rubber pin hole (not shown) formed at the tip of the clutch release lever 41.
A bushing 22 is fitted in advance.

In such a state, the clevis pin 12 is closer to the other pin hole 1 than the other pin hole 15 of the clevis 11.
3 side, and protrudes outward from the pin hole 13, and the retainer is inserted into the clip hole 20.
Through one leg 23 of the clip 21, the other bent leg 24 opens the clevis.
Pinch the tip of pin 12.

Further, a return spring hanger 32 with a notch 35 formed in the frame 50 is bolted to the base thereof, and a hook hole (not shown) is formed at the tip of the clutch release lever 41. One end of the return spring 33 is hooked into the hook hole, and the other end is hooked into the notch 35 of the return spring hanger 32.
be hooked to.

Therefore, in the clutch control mechanism 10 configured as described above, if the slave cylinder 30 is operated and the clevis 11 is reciprocated via the push rod 31, the clevis pin 12 and the rubber A clutch release lever 41 is driven via the bush 22, and a clevis shaft (not shown),
A clutch disc (not shown) is driven via a clutch release fork (not shown) or the like to transmit and release power.

At that time, the clevis pin 12 is
is rotated integrally with the clevis 11 by the stopper surface 14 formed in one of the pin holes 13 and the notch step 19 of the clevis pin 12,
The misalignment between the clevis pin 12 and the pin hole (not shown) of the clutch release lever 41 at this time is eliminated by the rotation of the rubber bush 22.

In the above-mentioned clevis 11, the pin hole 13 having the stopper surface 14 formed at its tip has been described as having only one side, but it is further possible to form a pair of pin holes 13 having the stopper surface 14. It is also possible to form it by

In that case, the cutout step 19 formed in the clevis pin 12 is formed continuously in the length direction of the shank portion 18 thereof.

According to this invention, the clevis is bent into a substantially U-shape, the push rod of the slave cylinder is connected to the base, and a pair of pin holes are formed on a common axis at the tip, and at least one of the pin holes is connected to the push rod of the slave cylinder. a stopper surface is formed on one side, a clevis pin has a cutout step corresponding to the stopper surface and is fitted into the pin hole, a clutch release lever is fitted into the clevis pin; , a rubber bushing is disposed between the clevis pin and the clutch release lever, so that the clevis pin is rotated together with the clevis, and the rubber bushing causes the clevis to release.・Pin wear is prevented and proper connection between the slave cylinder push rod and clutch release lever can be maintained.

[Brief explanation of the drawing]

FIG. 1 is a schematic view showing a specific example of a clutch control mechanism according to the invention, and FIG. 2 is a perspective view of a clevis, clevis pin, rubber bushing, and retainer clip. 10...Clutch control mechanism, 11...
... Clevis, 12... Clevis pin, 13...
Pin hole, 14... Stopper surface, 15... Pin hole,
30...Slave cylinder, 31...Push rod, 41...Clutch release lever.

Claims (1)

[Claims for Utility Model Registration] It is bent into a substantially U-shape, and has a push rod of a slave cylinder connected to its base, a pair of pin holes formed on a common axis at its tip, and at least one of the pin holes. It has a clevis forming a stopper surface on one side, and a notch step corresponding to the stopper surface,
A clutch that includes a clevis pin that fits into the pin hole, a clutch release lever that fits into the clevis pin, and a rubber bush that is disposed between the clevis pin and the clutch release lever. control mechanism.