JP2594517Y2 - Clutch pedal force reduction device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clutch pedal depressing device which can reduce driver fatigue when the driver continuously depresses the clutch pedal when the vehicle is temporarily stopped at an intersection or the like.

[0002]

2. Description of the Related Art Conventionally, in a so-called manual vehicle, when maintaining a temporary stop state at an intersection or the like, a clutch pedal is continuously depressed or a gear position is neutralized in order to cut off power transmission from an engine to driving wheels. I needed to. For this reason, especially in the in-gear state, if the time of the temporary stop becomes longer, the time for which the clutch pedal is kept depressed becomes longer correspondingly, and the driver may be tired.

[0003]

In order to eliminate such fatigue, similar to a brake system, there has been proposed a clutch-pedal depressing force reducing device using a booster. However, this device has a large mounting space, and in particular, a cab. In an over-type vehicle, it is difficult to secure a space, and there is a problem that the apparatus itself becomes expensive. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to propose a small, lightweight, and inexpensive clutch-pedal treading force reducing device that can be easily retrofitted to a mounting portion of a clutch-pedal, and an object thereof is to solve the above-mentioned problems.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a clutch / pedal pedaling force reducing device comprising a clutch pedal and a clutch / pedal pedaling force reducing mechanism capable of holding the clutch pedal depressed. A pulley capable of winding up and rewinding a cable connected to the clutch pedal in accordance with the amount of depression of the clutch; an electromagnetic clutch for restricting rotation of the pulley in a reverse direction; 22. A clutch-pedal depressing force reducing device, comprising: a pedal depressing lever that applies a pulling force opposite to the cable winding direction to the cable 22; and a clutch pedal and a state in which the clutch pedal is depressed. And a clutch pedal force reduction mechanism that can hold Thus, the clutch pedal depressing force reducing device is capable of winding and rewinding a cable connected to the clutch pedal in accordance with the amount of depression of the clutch, and is rotatable only in a direction in which the cable is wound when the pulley is in a predetermined state. And a pedaling force reducing lever that applies a pulling force to the cable in a direction opposite to the cable winding direction.When the clutch pedal is depressed from the clutch released state, the cable is wound by a pulley, and the clutch pedal is moved. When depressed to a predetermined position, the electromagnetic clutch operates, enabling the pulley to rotate only in the cable winding direction, and further continuing to depress the clutch pedal causes the pulley to further move in the cable winding direction by the urging force of the spring. Rotate, continue winding the cable, and wind from the position where the electromagnetic clutch was activated. A clutch pedal depression force reducing device characterized in that the pedal force reduction lever is configured to reduce the depression force of the clutch pedal with respect to the movement of the clutch pedal until the position where the clutch pedal is continuously taken. It is a means for solving the problem.

[0005]

When the clutch pedal 1 is depressed from the clutch released state, the cable 22 is wound up by the pulley 14 and the clutch pedal moves to the left in the drawing. Clutch pedal 1
When the stroke switch 4 detects the predetermined depression position of (the current may flow directly by the stroke switch 4), a current flows through the electromagnetic coil 7 via a control circuit (not shown),
The stator 9 attracts the clutch plate 10 and the clutch plate 10 is fixed. At this time, the pulley 14 can be rotated only clockwise by the one-way clutch bearing 17. When the clutch pedal 1 is further depressed, the pulley 14 is further rotated clockwise by the urging force of the spring 21, and the winding of the cable 22 is continued, and the clutch (not shown) is disengaged when the clutch pedal comes to a predetermined position. .

When the clutch is disengaged, the depressing force of the clutch pedal 1 is slightly reduced due to the characteristics of a clutch spring (not shown), but the clutch spring 1 tends to move rightward in the figure due to the urging force of the clutch spring. However, at this time, since the cable 22 is in the winding state, the cable 22 is
The lever 23 is rotated in the direction of the arrow in the drawing against the urging force. As a result, the depression force of the clutch pedal is reduced by the urging force of the spring 26 acting on the depression force reducing lever 23.

When the clutch is released, the stroke switch 4 detects a predetermined position of the clutch pedal, and the stroke switch is turned off to cut off the power supply to the electromagnetic coil. This disconnects the connection between the stator and the clutch plate,
The pulley 14 is free to rotate counterclockwise. For this reason, the pulley 14 rewinds the cable against the urging force of the coil spring 21 and returns to the initial state.

[0008]

FIG. 1 is a side view of a clutch pedal depression force reducing apparatus according to an embodiment of the present invention, FIG. 2 is an enlarged view of a main part of FIG. FIG. 3 is a sectional view taken along line AA in FIG. In FIG. 1, reference numeral 1 denotes a clutch pedal. The clutch pedal 1 is rotatably supported by a pedal bracket 2 by a shaft 3. A stroke switch 4 is attached to the pedal bracket 2 so as to face the lever 5 of the clutch pedal. The stroke switch 4 has a function of detecting a predetermined depression position of a clutch pedal and energizing an electromagnet provided in a clutch pedal depression force reducing device described later.

The details of the clutch pedal depressing force reducing device will be described with reference to FIGS. 2 and 3. The clutch pedal depressing force reducing device has a housing plate 6, and the housing plate 6 has an electromagnetic coil 7. Is the coil support member 8
a, 8b. Coil support member 8b
A stator 9 is fixed on the side, and when electricity flows through the electromagnetic coil 7, the stator 9 attracts a clutch plate 10 described later. The stator 9 and the clutch plate 10 constitute an electromagnetic clutch. doing.

The large diameter portion 13a of the pulley shaft 13 is provided on the coil supporting members 8a and 8b by bearings 11 and 12.
Are rotatably supported. A pulley 14 is fixed to an end of the small diameter portion of the pulley shaft by a nut 14a, and a groove for winding a cable is formed on an outer peripheral portion of the pulley 14. A clutch shaft 16 is axially supported via a one-way clutch bearing 17 in a hole 15 formed at the center of the large diameter portion 13a of the pulley shaft 13, and the clutch shaft 16 is further moved rightward in the figure by a spring 18. Has been energized. The spring washer 19 includes the pulley shaft 13 and the clutch shaft 1.
A projection 20 is formed in order to reduce the rotational friction with the clutch shaft 6, and a clutch plate 10 is fixed to the clutch shaft 16 by a nut 10a.

For this reason, in the state shown in FIG. 3 (when no magnetic force is generated in the stator), the clutch plate 10 and the clutch shaft 16 can rotate freely as the pulley shaft 13 rotates. I have.
When a current flows through the electromagnetic coil 7 and a magnetic force is generated in the stator 9, the clutch plate 10 is attracted while moving the clutch shaft 16 to the left in the drawing against the urging force of the spring 18. In this state, the clutch plate 10 is attracted to the stator 9 and thus cannot be rotated. As a result, the pulley shaft 13 is rotated only clockwise in FIG.

The pulley shaft 13 has a coil spring 2 which can rotate the pulley in the direction of arrow B in FIG.
The cable 1 described later can be wound around the pulley 14 by this spring force. One end of a cable 22 is fixed to the pulley 14, and the other end of the cable 22 is fixed to the lever 5 of the clutch pedal 1 via a pulley 24 provided on a pedaling force reducing lever 23. Pedal force reduction lever 23
Is rotatably supported on the housing plate 6 by a shaft 25, and the pedaling force reducing lever 23 is urged by a spring 26 with a predetermined force in the direction of arrow C in the figure. The biasing force of the spring 26 is a spring having a smaller force than the spring force of a clutch spring (not shown) for returning the clutch pedal, and the stepping force can be reduced by the biasing force of the spring. ing.

When the clutch pedal is not depressed, the cable 22 connected to the pedal lever is rewound against the urging force of the coil spring 21 of the pulley 14. Therefore, the clutch pedal is in the release position (right position) shown in FIG. From the above relationship, the coil spring 21
The spring force of the spring 26 and the clutch spring (not shown) is as follows.
It is a clutch spring.

The operation of the clutch pedal depressing force reducing device having the above-described structure will be described. When the clutch pedal 1 is depressed from the clutch released state, slack occurs in the cable 22. This slack is taken up by the pulley 14 that rotates by the biasing force of the spring 21, and the clutch pedal moves leftward in the figure. When the stroke switch 4 detects a predetermined position of the clutch pedal 1, a current flows through the electromagnetic coil 7 via a control circuit (not shown), the stator 9 attracts the clutch plate 10, and the clutch plate 10 is fixed. However, even in this state, the pulley shaft 13 can rotate only in the clockwise direction in the drawing due to the function of the one-way clutch bearing 17, and when the clutch pedal 1 is further depressed, the urging force of the spring 21 With pulley 14
Further rotates clockwise, the winding of the cable 22 is continued, and the clutch (not shown) is disengaged when the clutch pedal comes to a predetermined position.

The reduction of the pedal effort when the clutch is disengaged is performed as follows. That is, when the clutch is disengaged, the depression force of the clutch pedal 1 is slightly reduced due to the characteristics of a clutch spring (not shown), but the clutch spring 1 tends to move rightward in the figure due to the urging force of the clutch spring. However, at this time, since the cable 22 is fully wound around the pulley 14 and the rotation of the pulley 14 in the counterclockwise direction is disabled by the one-way clutch 17, the cable 22 cannot be rewound. For this reason, the cable 22 rotates the pedaling force reducing lever 23 in the direction opposite to the arrow C direction in the figure against the urging force of the spring 26. As a result, the pressing force of the clutch pedal is reduced by the amount of the urging force of the spring 26 acting on the pressing force reducing lever 23.

When the clutch is released, the clutch pedal returns to the initial position by the original biasing force of the clutch spring. In this process, when the stroke switch 4 detects a predetermined position of the clutch pedal, the stroke switch is turned off, and the power supply to the electromagnetic coil is cut off. As a result, the connection between the stator and the clutch plate is disconnected, and the pulley 14
Is free to rotate counterclockwise. For this reason, pulley 1
4 rewinds the cable against the urging force of the coil spring 21. At this time, since the biasing force of the coil spring 21 is smaller than the biasing force of the spring 26 acting on the pedaling force reducing lever 23, the pedaling force reducing lever 23 maintains the state shown in FIG.
Is returned from the pulley 14 while bending, and returns to the initial state. Thus, in the initial state, the urging force in the direction of winding the cable always acts on the pulley 14. As described above, in the present device, when the clutch pedal is continuously depressed, the pedaling force can be reduced by the spring force acting on the pedaling force reduction lever by only slightly reducing the pedaling force of the clutch pedal with the clutch disengaged.

[0017]

[Effects of the Invention] As described in detail above, according to the clutch pedal depressing force reducing device according to the present invention, the device is small and can be easily mounted on a vehicle already in use.
Further, since the pedaling force of the clutch pedal can be effectively reduced, it is possible to effectively reduce driver fatigue when the clutch pedal is continuously depressed when the vehicle temporarily stops at an intersection or the like. . Further, since the device can be reduced in size, it can be applied to a cab-over type vehicle having a small space, and has excellent effects such as being inexpensive to manufacture.

[Brief description of the drawings]

FIG. 1 is a side view of a clutch pedal reducing device according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a sectional view taken along the line AA in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clutch pedal 2 Pedal bracket 4 Stroke switch 6 Housing plate 7 Electromagnetic coil 9 Stator 10 Clutch plate 11, 12 Bearing 13 Pulley shaft 14 Pulley 17 One-way clutch bearing 21 Coil spring 22 Cable 23 Depressing lever 23 26 Spring 26

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F16D 23/12 B60K 23/02 G05G 1/14 G05G 7/04

Claims (4)

(57) [Scope of request for utility model registration] 1. A clutch / pedal depressing force reducing device comprising: a clutch pedal (5); and a clutch / pedal depressing force reducing mechanism capable of holding a state in which the clutch pedal is depressed. A pulley 14 that can take up and rewind the cable 22 connected to the clutch pedal according to the amount of depression of the clutch, an electromagnetic clutch that regulates rotation of the pulley in the reverse direction,
And a pedaling force reducing lever for applying a pulling force to the cable in a direction opposite to the cable winding direction. 2. A clutch / pedal depressing force reducing device comprising a clutch pedal 5 and a clutch / pedal depressing force reducing mechanism capable of maintaining a state in which the clutch pedal is depressed. A pulley 14 that can take up and rewind the cable 22 connected to the clutch pedal according to the amount of depression of the clutch; and an electromagnetic clutch 9, 10 that holds the pulley rotatably only in the direction in which the cable is wound in a predetermined state. 17 and a pedaling force reducing lever 23 for applying a pulling force to the cable in a direction opposite to the cable winding direction. When the clutch pedal 1 is depressed from the clutch released state, the cable 22 is wound by the pulley 14 and the clutch pedal 1 Is depressed to a predetermined position, the electromagnetic clutch is operated, and the pulley 14 is connected to the cable. When the clutch pedal 1 is continuously depressed, the pulley 14 is further rotated in the cable winding direction by the biasing force of the spring 21, and the cable 22 continues to be wound. The clutch pedal pedal force reduction characterized in that the pedal force reduction lever 23 reduces the pedal force of the clutch pedal for the movement of the clutch pedal 1 from the actuated position to the position where the winding is continued. apparatus. 3. The system according to claim 1, wherein a one-way clutch bearing is provided between the shaft of the pulley and the electromagnetic clutch so as to restrict the pulley to rotate only in a required direction when the electromagnetic clutch is operated. A clutch pedal depressing force reducing device as described in the above. 4. The clutch pedal depression force according to claim 1, wherein said depression force reducing lever is biased by a spring acting to apply a pulling force to said cable. Mitigation device.