JPS59167336A - Cable type clutch device - Google Patents

Abstract

PURPOSE:To automatically adjust the effective length of a cable in time of wear in a disc, by installing a fluid filling cylinder in position between the cable connected to a pedal and a clutch control lever, while controlling the interconnection between two chambers of a cylinder. CONSTITUTION:A fluid filling cylinder 4 is jointly installed in position between a cable 3 being connected to a clutch pedal 1 and a clutch control lever 5. A body 4a of the cylinder 4 is partitioned by a piston 13 whereby two fluid filling chambers 11 and 12 are made up in formation. Both these chambers 11 and 12 are interconnected through via an orifice 14, while opening or closing of the orifice 14 is controlled by a control mechanism M consisting of an annular sponge material 15 and an annular valve disc 16. In time of controlling the clutch pedal 1, since the valve disc 16 closes the orifice 14, clutch operation takes place in a smooth manner. When a clutch disc 9 gets worn, a pressure difference between both chambers 11 and 12 is not produced there so that the valve disc 16 is opened up and thereby fluid is transferred, absorbing the wear, thus the effective length of the cable 3 is automatically adjusted right.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cable-type clutch device for use in automobiles, etc., which engages and engages a clutch by transmitting operating force from a clutch pedal via a cable.

As a conventional cable type clutch device, there is one shown in Fig. 1, in which the clutch disc b is in contact with the engine side 7 live wheel a by the biasing force of the diaphragm spring C when the clutch pedal is not depressed. This allows the power contact state to be maintained, while when the clutch pedal is depressed, the cable, clutch control lever e, and release bearing d are interlocked.
The biasing force of the Dia 7 ram spring C is weakened, thereby making it possible to shift to a power-off state. However, in such conventional cable clutch devices,
There are the following problems.

(1) Due to the wear of the clutch disc b, the diaphragm spring C is displaced as shown by the chain line in Figure 1, and the clutch control lever e is also displaced, causing excessive force to be applied to the cable. , or the feeling of pressing the clutch pedal changes.

(2) Enon vibrations are directly transmitted to the clutch pedal via the cable.

The present invention aims to solve these problems.
To provide a cable type clutch device in which the effective length of a cable can be automatically adjusted according to the wear of a clutch disk, and in which engine vibrations and the like are not transmitted to a clutch pedal.

For this reason, the cable-type clutch device of the present invention is a cable-type clutch that includes a clutch control lever that is connected to a clutch pedal via a cable, and a clutch disc that controls the application of power by the clutch control lever. A liquid-filled 3-type cylinder mechanism is interposed between the cable and the clutch control lever, and the cylinder mechanism is connected to a cylinder body connected to one of the cable and the clutch control lever, and a cylinder body connected to one of the cable and the clutch control lever. a piston loaded therein and connected to the other of the cable and the clutch control lever; and two liquid-filled chambers partitioned by the piston, and a passageway that allows communication between the liquid-filled chambers. If the relative movement between the above-mentioned shilling main body and the piston is about to occur suddenly, the communication blocking state of the above-mentioned passage is controlled to the blocking side, so that the relative movement between the above-mentioned shilling main body and the piston occurs slowly. The present invention is characterized in that it is configured to include a control mechanism that controls the communication cutoff state of the passage to the communication side when the passage is opened.

Hereinafter, a cable type clutch device as an embodiment of the present invention will be explained with reference to the drawings. Fig. 2 is an overall configuration diagram thereof, Fig. 3 is a sectional view showing its liquid-filled sill mechanism, and Fig. 4 is its liquid-filled clutch device. It is a sectional view showing other examples of a filling type cylinder mechanism.

As shown in FIG. 2, a clutch pedal 1 with a return spring 2 is provided in the vehicle interior, and a clutch control lever 5 is connected to the clutch pedal 1 via a cable 3.

This clutch control lever 5 is pivotally connected to a clutch casing portion near the output side of the engine, and an arm portion 6 of this clutch control lever 5 abuts a release bearing 7 coaxially disposed on a shaft on the transmission side. are in contact with each other.

In addition, the clutch disc 9 is controlled by the release bearing 7.
Dia 7 ram spring 8 whose biasing force is adjusted against
is interposed between the release bearing 7 and the clutch disc 9.

The clutch disc 9 is spline-engaged with the shaft on the transmission side, and its seven working surfaces can come into contact with the flywheel 10 on the output side of the engine.

From this 1, the clutch pedal 1 is returned to the return spring 2.
When you press the pedal against the pressure, the cable 3 is tensioned and the clutch control lever 5 is moved to the clock 5 in Figure 2.
- The release bearing 7 is moved to the ennon side by rotating in the clockwise direction, and as a result, the biasing force of the dial 7 ram spring 8 acting on the clutch disc 9 is weakened, and the clutch disc 9 is separated from the flywheel 10.
Power is cut off.

On the other hand, when the clutch pedal 1 is released, the cable 3 is returned by the biasing force of the return spring 2, which causes the clutch control lever 5 to rotate counterclockwise in the diagram @2, and as a result, the dial 7 ram spring 8 The biasing force acts on the clutch disc 9, the clutch disc 9 is pressed against the 7-wheel drive wheel 10, and the clutch disc 9 is torn as it transitions to a power contact state in which power is transmitted from the engine side to the transmission side.

By the way, cable 3 and clutch control lever 5
A liquid-filled cylinder mechanism 4 is interposed between the two. As shown in FIG. 3, this cylinder mechanism 4 includes a cylinder body 4a and a piston 13 loaded in the cylinder body 4a.Therefore, the cylinder body 4a is partitioned by the piston 13 and has a 6- Two chambers 11.12 are formed, each chamber 11.12 being filled with a liquid such as oil. Hereinafter, these chambers will be referred to as liquid-filled chambers 11 and 12.

Further, the cylinder body 4a is connected to the clutch control lever 5 via a rod 21, and the piston 13
is connected to cable 3 via rod 20.

Furthermore, these liquid filling chambers 11. , 12 are connected to each other via an orifice 14 serving as a narrow passage, and the state of communication between the liquid-filled chambers 11 and 12 is controlled by a control mechanism M having the following configuration. It looks like this.

That is, the annular valve body 1 is inserted into the opening of the orifice 14 on the liquid filling chamber 11 side through the annular sponge material 15.
6 is attached, so that when the relative movement between the cylinder body 4a and the piston 13 is about to occur suddenly, such as when the clutch pedal 1 is operated, the compartment 11
．． 12, a pressure difference occurs that increases the dynamic pressure in the chamber 11, so the valve body 16 contracts the sponge material 157-, closes the orifice 14, and controls the communication cutoff state of the orifice 14 to the cutoff side. do. As a result, when the clutch pedal 1 is operated, although there is a slight oil leak, the cylinder body 4a and the piston 11 are in a substantially rigid state, and the clutch operation can be performed smoothly without any trouble.

Note that since it takes some time for the pressures in both the liquid filling chambers 11 and 12 to be balanced, the shutoff state by the valve body 16 is maintained during normal clutch operation time.

On the other hand, when the relative movement between the cylinder body 4a and the piston 13 is about to occur extremely slowly, as in the case of seven-acing wear of the clutch disk 9, the liquid filling chamber 1
1. Since no pressure difference occurs between the valve body 16 and the sponge material 15, the valve body 16 does not contract the sponge material 15, thereby allowing oil to flow through the orifice 14.

That is, since the communication-blocked state of the orifice 14 is controlled to the communication side, relative movement between the cylinder body 4a and the piston 13 is allowed.6 As a result, the cylinder body 4a and the piston 13 move relative to each other. Then, the effective length of the cable 3 is adjusted. In other words, this cylinder mechanism 4 can absorb the wear of the clutch disk 9 during machining.

In addition, this cylinder mechanism 4 can also absorb engine vibration, thereby reducing engine vibration to the clutch pedal 1.
It will not be transmitted to the other side.

In addition, in the liquid filling chamber 11, a weak spring 18 is loaded between the cylinder body 4a and the piston 13 (more precisely, between the cylinder body 4a and the valve body 16). is for lightly pressing the arm portion 6 of the clutch control lever 5 against the release bearing 7.

Here, the valve body 16 is formed into an annular shape as described above in order to receive the spring 18, but even if the valve body 16 receives the spring 18 in this way, the force of the spring 18 is weak, so this The spring 18 does not push the valve body 16 and close the orifice 14.

Further, a sealing material 17 is fitted to the outer circumference of the piston 13, and the cylinder body 4 of the piston rod 20 is fitted with a sealing material 17.
A sealing material 19 is also provided on the sliding portion relative to a.

Note that the reference numeral 22 in FIG. 3 indicates a bellows interposed between the piston rod 20 and the cylinder body 4a.

By the way, the cylinder mechanism 4' can also be configured as shown in FIG. Note that in FIG. 4, the same reference numerals as in FIG. 3 indicate substantially the same parts.

That is, this cylinder mechanism 4' has a cylinder body 4'a.
It is the same as the cylinder mechanism 4 described above in that it has a piston 13, two liquid filling chambers 11, 12, etc.
This differs from the previous embodiment in that the narrow passage 23 connecting the compartments 11, 12 is formed in the interposed part of the sealing material 17' fitted around the outer periphery of the piston 13. This sealing material 17' constitutes a control mechanism M'' having the same function as the control mechanism M described above.

Note that the sealing material 17' is attached to the cylinder body 4 due to its elastic force.
Since it is pressed against the inner wall of 'a', movement of the sealing material 10-17' to the left and right is restricted.

Due to the dual configuration, when the clutch pedal 1 is operated, relative movement between the cylinder body 4'a and the piston 13 occurs rapidly, and a dynamic pressure difference occurs between the two liquid filling chambers 11 and 12. Therefore, the piston 13 instantaneously moves slightly in one direction in FIG. 4, thereby closing the passage 23 between the piston 13 and the sealing material 17'. The resulting side liquid filling chamber 11.
The oil flow between cylinder body 4 and cylinder body 4 is almost cut off.
'a and the piston 13 are in an almost rigid state,
Clutch engagement can be performed smoothly without any hindrance.

On the other hand, if the clutch disc 9 wears out due to wear, the cylinder body 4'a and the piston 1
3 relative to 9111], the passage 23 is very close to the piston 13 and the sealing material 17.
', thereby maintaining a state of communication between the two liquid filling chambers 11 and 12 through the passage 23. As a result, the cylinder body 4'a and the piston 13 move relatively, and the cable 3 The effective length of is adjusted. That is, this cylinder mechanism 4' can absorb the amount of wear on the facing of the clutch disk 9.

Engine vibrations can also be absorbed by this cylinder mechanism 4'.

Note that the rod 20 may be connected to the clutch control lever 5 side, and the rod 21 may be connected to the cable 3 side.6 As detailed above, according to the cable type clutch device of the present invention, the cable is connected to the clutch pedal. In a cable-type clutch that includes a clutch control lever that is connected via a clutch control lever and a clutch disc that controls power contact by the clutch control lever, a liquid-filled cylinder is connected between the cable and the clutch control lever. A mechanism is interposed, and the cylinder mechanism is connected to a cylinder body connected to one of the above cable and the clutch control lever, and loaded in the cylinder body and connected to the other of the above cable and the clutch control lever. It has a piston and two liquid-filled chambers partitioned by the piston, and has a passageway that allows communication between the liquid-filled chambers, and allows sudden relative movement between the cylinder body and the piston. In this case, the communication cut-off state of the passage is controlled to the cut-off side, and when the relative movement between the cylinder body and the piston is about to occur slowly, the communication cut-off state of the passage is controlled to the communication side. Since it is configured with a mechanism, the following effects or advantages can be obtained.

(1) Since the cable length adjustment function by the shilling mechanism is not performed when the clutch pedal is operated, the clutch operation can be performed smoothly without any hindrance.

(2) Seven operations of clutch disc using cylinder mechanism
The cable length can be adjusted automatically by fully absorbing the cable wear.

(3) The liquid-filled cylinder mechanism can sufficiently absorb engine vibrations, thereby reliably preventing engine vibrations from being transmitted to the clutch pedal side.

[Brief explanation of drawings]

Figure 1 shows a part of a conventional cable type clutch device13
- Figures 2 to 4 are schematic diagrams showing a cable type clutch device as an embodiment of the present invention, Figure 2 is an overall configuration diagram thereof, and Figure 3 is a diagram showing its liquid-filled cylinder mechanism. FIG. 4 is a sectional view showing another example of the liquid-filled cylinder mechanism. 1.Clutch pedal, 2.Return spring, 3.
・・Cable, 4, 4′ ・・Liquid-filled cylinder mechanism, 4a, 4′a・・Cylinder body, 5・・Clutch control lever, 6・・Arm part, 7・・Release bearing, 8・・Diaplam Spring, 9...Clutch disc, 10...Flywheel, 11°12...
Liquid filling chamber, 13... Piston, 14... Orifice as passage, 15... Sponge material, 16... Valve body, 17
．． 17'...Sealing material, 18...Spring, 19
...Sealing material, 20.21..Rot Y, 22..Bellows, 23..Passage, M, M'..Control mechanism. Sub-Agent Patent Attorney Yoshihiko Iinuma-14= Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Scope of Claims] A cable type clutch comprising a clutch control lever connected to a clutch pedal via a cable, and a clutch disc whose application of power is controlled by the clutch control lever, wherein the cable and the clutch described above are provided. A liquid-filled cylinder mechanism is interposed between the control lever and the cylinder mechanism is connected to the cable and one of the clutch control levers, and the cylinder body is loaded into the cylinder body. and a piston connected to the other of the cable and the clutch control lever, and two liquid filling chambers partitioned by the piston, and a passage allowing communication between the liquid filling chambers, and the cylinder body. If the relative movement with the piston is about to occur suddenly, the communication cutoff state of the passage is controlled to the blocking side, and if the relative movement between the cylinder body and the piston is about to occur slowly. The cable-type clutch device is characterized in that it is configured to include a control mechanism that controls the communication cutoff state of the passage to the communication side.