JPS5916584Y2 - Mechanical clutch release system vibration transmission isolation mechanism - Google Patents

Description

[Detailed description of the invention] This invention relates to a mechanical (cable type) clutch release system mainly used in automobiles, and is particularly designed to prevent vibrations generated on the engine and friction clutch side from being transmitted to the car body through the clutch release system. The present invention relates to a vibration transmission isolation mechanism for achieving

Generally, in automobiles that employ a mechanical clutch release mechanism, vibrations from the engine and various parts of the friction clutch are transmitted to the dash panel, clutch pedal, pedal bracket, etc. on the vehicle body side through the clutch release system, and this vibration is transmitted inside the vehicle interior. This is a cause of abnormal noise.

Therefore, as one of the countermeasures for blocking the above-mentioned vibration transmission, a configuration as shown in FIG. 6 has been conventionally implemented.

That is, a cylindrical case 6 attached to the end of the clutch inner cable 3 via an elastic body 5 such as rubber is attached to the clevis 1.
The inner cable 3 and the release fork 4 are connected via the elastic body 5 by engaging the pin 12 of the clevis 10 with the clutch release fork 4, which is an operating member.

However, the above-mentioned abnormal noise becomes a problem when the clutch is disengaged, and in this state, the elastic body 5 is in a compressed state.

The vibration damping function of the elastic body 5 in the compressed state is lower than that in the free state (uncompressed state).

For this reason, the configuration using the single elastic body 5 could not necessarily provide a satisfactory result as a measure against vibration isolation.

In view of the above-mentioned conventional problems, an object of the present invention is to provide a vibration transmission cutoff mechanism for a mechanical clutch release system that can more effectively cut off vibration transmission from the clutch release system to the vehicle body. By doing so, the purpose is to prevent abnormal noises within the vehicle interior.

The gist of the present invention, which is a distant relative of the above object, is to connect the end of the inner cable and the clevis connected to the operating member with a cylindrical case in between, through a double elastic body inside and outside. It is located at the connected point.

Embodiments of the present invention will be described in detail below with reference to FIGS. 1 to 3.

First, FIG. 1 shows a part (part on the clutch housing side) of an automobile's mechanical clutch release system.

One end of the clutch outer cable 1 is integrally attached to the clutch housing 2, and the other end is integrally attached to a dash panel (not shown).

A clutch inner cable 3 is slidably inserted into the outer cable 1, and one end thereof is operatively connected to a clutch release fork 4 of a friction clutch, and the other end is operatively connected to a release lever of a clutch pedal (not shown). .

Now, the inner cable 3 and the release fork 4 are connected by a vibration transmission interrupting means that is a feature of the present invention.

That is, as shown in cross section in FIG. 2, a vibration-proof elastic body 5 made of rubber or the like is attached to one end of the inner cable 3 with the inner cable 3 as its axis.

The outer periphery of the elastic body 5 is covered with a metal cylindrical case 6 except for the right end surface 5a in FIG.

A head 7 is fixed by caulking to the end of the inner cable 3 that penetrates the elastic body 5 and protrudes from the end surface 5a of the elastic body 5, and between the head 7 and the end surface 5a of the elastic body 5 A washer 8 of a size that does not contact the cylindrical case 6 is interposed.

Furthermore, a vibration-proofing elastic body 9 made of rubber or the like is attached to the outer periphery of the cylindrical case 6 by suitable means such as adhesive.

As clearly shown in the exploded perspective view of FIG. 3, the inner cable 3 to which these members are attached has an elastic body 5.
, 9 and the cylindrical case 6 are positioned inside the clevis 10 from the side using the cut groove 11 formed in the clevis 10 and are assembled by pulling them together.

Furthermore, the pin 12 of the clevis 10 is engaged with the engagement groove 4a of the release fork 4, and the release fork 4
They are prevented from coming off each other by a cotter pin 13 attached to them.

This allows the inner cable 3 and release fork 4 to
are connected by double elastic bodies 5 and 9.

Note that the inner cable 3 is positioned by the inner wall of the clevis 10 and the claw 14.

In this embodiment, the vibration transmission path of the mechanical clutch release system is as follows: release fork 4 → clevis 10 → elastic body 9 → cylindrical case 6 → elastic body 5 → inner cable 3, and vibrations of the engine and various parts of the friction clutch are transmitted. The double elastic bodies 5 and 9 can effectively prevent the vibration from being transmitted to the vehicle body.

FIG. 4 shows the effects of this embodiment in comparison with the conventional example shown in FIG.

Here, the solid line shows the conventional example, and the broken line shows the case of this embodiment.

Next, FIG. 5 is a sectional view showing another embodiment of the present invention.

In this embodiment, the shape of the elastic body interposed between the cylindrical case 6 and the clevis 10 is changed from the cylindrical shape of the above embodiment to a plate shape 9', so that the bottom surface of the cylindrical case 6 and the clevis 10 are connected to each other. 10, and the rest is the same as the above embodiment.

As is clear from the above description, the present invention can more effectively block vibration transmission from the mechanical clutch release system to the vehicle body, and can prevent the occurrence of abnormal noise in the vehicle interior.

Although an example in which the present invention is applied to a connection between an inner cable and a release fork has been described, it can also be applied to a connection between an inner cable and a release lever of a clutch pedal.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing an embodiment of the present invention, Fig. 2 is a sectional view taken along the line II-II of Fig. 1, Fig. 3 is an exploded perspective view, and Fig. 4 shows the effect of an embodiment of the present invention. FIG. 5 is a sectional view similar to FIG. 2 showing another embodiment of the present invention, and FIG. 6 is a sectional view similar to FIG. 2 showing a conventional example. be. 1: Clutch outer cable, 3: Clutch inner cable, 4: Clutch release fork, 5.9.9':
Elastic body such as rubber, 6: cylindrical case, 7: head, 8: washer, 10: clevis, 12: pin.

Claims (1)

[Claims for Utility Model Registration] At the connection between the end of the clutch inner cable that slides in the clutch outer cable attached to the fixed member and the operating member, an elastic body such as rubber is attached to the end of the inner cable 3. At the same time, the cylindrical case 6 is attached to the clevis 10 via an elastic body 9 such as rubber, and the pin 12 of the clevis 10 is engaged with the operating member 4. Features a mechanical clutch release system vibration transmission isolation mechanism.