JPH076013Y2 - Control structure of self-adjusting clutch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a control structure for a self-adjusting clutch.

[Conventional technology]

In the self-adjusting clutch, Fig. 5 system diagram and 6
As shown in the enlarged view of the drawing, the piston 5 of the master cylinder 3 moves via the output rod 4 of the booster 2 in conjunction with the depression of the clutch pedal 1, so that the release cylinder connected via the hydraulic circuit. 6 is extended, the rocker arm 7 is rotated counterclockwise, and the center of the diaphragm spring 9 is pushed toward the clutch disc 10 via the release bearing 8. As a result, the outer peripheral portion of the diaphragm spring 9 is engaged with the clutch shoe along with the clutch shoe. Separated from the disc 10, the clutch is adapted to be disengaged from the engaged state.

In this type of automatic adjustment clutch, the rocker arm 7 and the Reeds bearing 8 are always in contact with each other, and the relationship between the stroke of the clutch pedal and the pedaling force is as shown by the broken line in FIG. Since P ₀ is always at a constant depression position, no clutch adjustment is required, so maintenance is easy.

[Problems to be solved by the device]

However, in the self-adjusting clutch control, the release bearing and the rocker arm are always in contact with each other, and the discontinuity of the clutch pedal is at a fixed position. There are many people who want to be disconnected.

Further, as the clutch disc wears, the outer peripheral portion of the diaphragm spring 9 moves toward the clutch disc, so that the center portion of the diaphragm spring 9 moves the release bearing 8 toward the rocker arm 7. When the clutch is frequently operated to the place where the clearance of the rocker arm is zero, the foot is put on the clutch pedal, so even if it is lightly put on, the pedaling force of several kg will be applied to the clutch pedal,
There is also a phenomenon in which the clutch slightly slips and the clutch disc is unnecessarily worn.

The present invention has been proposed in view of such circumstances, and in the automatic adjustment type clutch control structure, it gives a break point depth desired by the driver as necessary, and prevents unnecessary wear of the automatic adjustment type clutch. An object of the present invention is to provide a control structure of a clutch that can be used.

[Means for Solving the Problems]

To this end, the present invention is directed to a booster that interlocks the output rod with the operation of a clutch pedal, a master cylinder whose casing is connected to the booster, and an end surface that is inserted into the master cylinder. Is a piston that can abut the tip of the output rod, one end abuts the tip of a release cylinder connected to the master cylinder via a hydraulic circuit, and the other end abuts the release bearing of the clutch mechanism. In the self-adjusting clutch having a rocker arm, a shim having an appropriate thickness that forms an appropriate gap between the tip of the output rod and the end surface of the piston is provided at the connecting portion between the booster and the casing. It is characterized by being interposed.

[Action]

According to such a configuration, when the shim is interposed in the connecting portion between the booster and the casing of the master cylinder, the gap between the tip of the output rod of the booster and the end surface of the piston is increased by the thickness of the shim. A gap is formed in. This gap becomes a loss stroke when the clutch is operated and deepens the break point of the clutch pedal.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings. Fig. 1 is an overall system diagram thereof, Fig. 2 is a perspective view showing a shim of Fig. 1,
3 is a longitudinal sectional view showing the master cylinder of FIG. 1,
FIG. 4 is a diagram showing the relationship between the stroke of the clutch according to FIG. 1 and the pedal effort.

In the above figure, the same reference numerals as in FIGS.
6 shows the same member as that of FIG. 6, and the difference between FIG. 1 and FIG. 5 is that a shim is inserted and fixed between the booster and the master cylinder.

In such a structure, if the thickness t of the shim is now set to 1 mm, as shown in FIG. 3, a gap between the tip of the output rod and the end face of the piston, that is, the loss stroke s =
1mm occurs.

As a result, the relationship between the stroke of the clutch and the pedal effort is as shown by the solid line in FIG. 4, and the break point P ₀ moves to P,
The depth of the break is s deeper.

[Effect of device]

With such a structure, the clutch having the automatic adjustment clutch control structure can be a manually adjustable clutch with a simple means, and the following effects can be obtained.

(1) The clutch pedal can be provided with a desired depth of the break point according to the individual difference of the driver.

(2) Despite frequent clutch depressing operations
Occurrence of slippage of the clutch and accompanying wear of the clutch disc can be prevented.

In short, according to the present invention, a booster for retracting the output rod in conjunction with the operation of the clutch pedal, a master cylinder having a casing connected to the booster,
A piston that is inserted into the master cylinder and has an end surface that can abut the tip of the output rod, and one end that abuts the tip of a release cylinder connected to the master cylinder via a hydraulic circuit. In a self-adjusting clutch having a rocker arm whose end is in contact with a release bearing of a clutch mechanism,
Since a shim of an appropriate thickness that forms an appropriate gap between the tip of the output rod and the end surface of the piston is interposed in the connecting portion between the booster and the casing,
In the self-adjusting clutch control structure, the present invention provides a clutch control structure that can give a desired break point depth of the driver as necessary and prevent unnecessary wear of the self-adjusting clutch. Above all, it is extremely useful.

[Brief description of drawings]

1 is an overall system diagram showing an embodiment of the present invention, FIG. 2 is a perspective view showing the shim of FIG. 1, FIG. 3 is a longitudinal sectional view showing the master cylinder of FIG. 1, and FIG. FIG. 2 is a diagram showing the relationship between the stroke of the clutch and the pedal effort according to FIG. 1. FIG. 5 is an overall system diagram showing a known automatic adjustment clutch control device, and FIG. 6 is a partially enlarged view of the master cylinder of FIG. 1 ... Clutch pedal, 2 ... Booster device, 3 ... Master cylinder, 4 ... Output rod, 5 ... Piston, 6
...... Release cylinder, 7 ...... Rocker arm (release lever), 8 ...... Release bearing, 9 ...... Diaphragm spring, 10 ...... Clutch disc, 11 ......
Flywheel, 12 …… Sim, P …… New break point, s ……
Loss stroke.

Claims (1)

[Scope of utility model registration request] 1. A booster for retracting and retracting an output rod in conjunction with the operation of a clutch pedal, a master cylinder having a casing connected to the booster, and an end face inserted into the master cylinder and having an end face. A piston capable of abutting on the tip of the output rod, one end abuts on the tip of a release cylinder connected to the master cylinder via a hydraulic circuit, and the other end abuts on a release bearing of a clutch mechanism. In the self-adjusting clutch having a rocker arm, a shim of an appropriate thickness that forms an appropriate gap between the tip of the output rod and the end surface of the piston is interposed in the connecting portion between the booster and the casing. A self-adjusting clutch control structure characterized by being installed.