KR101510047B1 - Apparatus for reducing effort of clutch pedal - Google Patents

Apparatus for reducing effort of clutch pedal Download PDF

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Publication number
KR101510047B1
KR101510047B1 KR20140038036A KR20140038036A KR101510047B1 KR 101510047 B1 KR101510047 B1 KR 101510047B1 KR 20140038036 A KR20140038036 A KR 20140038036A KR 20140038036 A KR20140038036 A KR 20140038036A KR 101510047 B1 KR101510047 B1 KR 101510047B1
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KR
South Korea
Prior art keywords
pedal
guide hole
rotation
pedal arm
fixed shaft
Prior art date
Application number
KR20140038036A
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Korean (ko)
Inventor
김은식
Original Assignee
현대자동차주식회사
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Publication date
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Priority to KR20140038036A priority Critical patent/KR101510047B1/en
Application granted granted Critical
Publication of KR101510047B1 publication Critical patent/KR101510047B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K23/00—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for
    • B60K23/02—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for main transmission clutches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G7/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof
    • G05G7/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof characterised by special provisions for conveying or converting motion, or for acting at a distance
    • G05G7/04—Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof characterised by special provisions for conveying or converting motion, or for acting at a distance altering the ratio of motion or force between controlling member and controlled member as a function of the position of the controlling member

Abstract

The present invention relates to a leg reduction device for a clutch pedal of an automobile, and it is possible to greatly reduce the driver's pressing force when the pedal arm (30) is rotated according to the driver's operation, thereby greatly reducing the driver's fatigue Further, when the pedal arm 30 is not operated, the full return of the pedal arm 30 can be induced, so that a more reliable connection between the clutch disk and the flywheel can be achieved. As a result, Even in a horsepower vehicle, it can be used sufficiently without damaging the parts.

Description

[0001] APPARATUS FOR REDUCING EFFORT OF CLUTCH PEDAL [0002]

More particularly, the present invention relates to a driving force reducing device for a vehicular clutch pedal which can reduce a driver's feeling of feeling when operating a pedal, And a pedal depressing device for a clutch pedal.

In a manual transmission vehicle, when the clutch disc and the flywheel are connected to each other so as to transmit power, the slip between the clutch disc and the flywheel must be prevented so that the power of the engine can be smoothly transmitted to the transmission.

In the meantime, as the vehicle performance is improved, a high-power engine having a higher output is gradually used. In the case of using a high-horsepower engine, the spring force of the diaphragm must be higher than that of a conventional one in order to securely connect the clutch disk and the flywheel. There is a way to increase the diameter of the turnover spring.

However, when the spring force of the turnover spring is increased, the pressure applied to the clutch pedal is increased. As a result, the fatigue of the driver due to the pedal operation is relatively increased. In particular, when the diameter of the turnover spring is increased, And the spring bushes connecting the turnover spring and the pedal member are easily damaged.

It should be understood that the foregoing description of the background art is merely for the purpose of promoting an understanding of the background of the present invention and is not to be construed as an admission that the prior art is known to those skilled in the art.

Korean Patent Registration No. 10-0820241

Accordingly, the present invention has been made in order to solve the above-mentioned disadvantages, and it is an object of the present invention to provide a vehicular automatic transmission capable of reducing the driver's feel when operating the clutch pedal, And a pedal depressing device for a clutch pedal.

In order to achieve the above object, the present invention provides a foot reduction device for a clutch pedal of an automotive vehicle, the foot reduction device comprising: a fixed shaft disposed at a front upper side of a pedal hinge serving as a rotation center of a pedal arm; A pedal bracket having one end fixedly coupled to the hinge pipe through which the pedal hinge penetrates and the other end protruding forwardly and having a guide hole formed at the other end; And a pedal arm which is rotatably mounted to the fixed shaft and the pedal bracket while connecting the fixed shaft and the pedal bracket and is provided with a returning force to the pedal arm by an elastic force accumulated according to a change in forward rotation angle of the pedal arm, And an elastic force providing mechanism for applying an elastic force to the pedal arm to increase forward rotation of the pedal arm.

The pedal bracket is composed of a pair of the pedal brackets fixedly coupled to the hinge pipe so that one end thereof is in close contact with both side surfaces of the pedal arm, and the other end of the pedal bracket protrudes parallel to the front side.

Wherein the guide hole is formed to pass through the pedal bracket in the lateral direction and form a closed space in the front-rear direction; A front protruding portion and a rear protruding portion which are opposed to each other are formed at an intermediate portion in the vertical direction in the guide hole; The width of the guide hole in the front-rear direction is narrowest between the front projection and the rear projection, and is gradually widened in the vertical direction.

The elastic force providing mechanism includes a rotary pin inserted between the pair of pedal brackets and having opposite ends coupled to the pedal bracket so as to be rotatable about an axis; A guide rod having one end coupled to the fixed shaft so as to be rotatable about its axis and the other end configured to pass through the rotation pin; A spring washer fitted into the guide rod to be positioned in the guide hole; And a compression spring fitted to the guide rod and having both ends supported by the rotation pin and the spring washer so as to provide an elastic force such that the spring washer is brought into close contact with the guide hole.

The rotation pin is rotatably coupled to the rear projection of the pedal bracket by avoiding the guide hole; The spring washer is installed in contact with the front surface of the guide hole formed by the elastic force of the compression spring, and when the guide rod is rotated about the fixed shaft, the front surface of the guide hole, And is movably provided.

Wherein the washer hole of the spring washer penetrates through the guide hole when the guide rod is axially rotated about the fixed axis so that the spring washer is vertically rotated to easily move along the front face of the guide hole, Is formed in an elliptic shape larger than the left and right direction diameters.

When the center line connecting the fixed axis and the rotation center of the rotation pin is located below the reference line connecting the fixed axis and the center of rotation of the pedal hinge in a straight line, the compression spring causes the pedal arm And returns to the initial position.

The compression spring is maximally compressed when the center line connecting the fixed shaft and the rotation center of the rotary pin in a straight line is aligned with a reference line that is a straight line connecting the rotation center of the pedal hinge and the fixed shaft, And provides a maximum reaction force to the arm.

From the instant when the center line connecting the fixed shaft and the rotation center of the rotation pin is linearly positioned through the reference line connecting the fixed shaft and the rotation center of the pedal hinge upward, And the forward rotation of the pedal arm is increased.

According to the present invention, it is possible to greatly reduce the driver's pressing force when the pedal arm is rotated according to the driver's operation, thereby greatly reducing the driver's fatigue due to the pedal operation. In addition, The pedal arm can be fully returned to the clutch disc and the flywheel can be more reliably connected to the clutch disc. Therefore, even a high-horsepower vehicle with a high engine output can be used without damaging the parts.

1 is a perspective view of a clutch pedal to which a leg reduction device according to the present invention is applied,
Fig. 2 is a view of the pedal member removed in Fig. 1,
3 is an exploded perspective view of the leg reduction device according to the present invention,
4 is a view for explaining a guide hole of a pedal bracket according to the present invention,
5 to 7 are diagrams for explaining the operating state of the clutch pedal depressurization apparatus according to the present invention, Fig. 5 is an initial state before the pedal arm is operated, Fig. 6 is a state in which the compression spring is maximally compressed , And Fig. 7 is a view of the pedal arm in a full-stroke operation state.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a driving force reducing apparatus for a vehicular clutch pedal according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

1 to 7, a pedal member 10 fixedly mounted on a front side vehicle panel (dash panel) at the lower portion of the driver's seat; A pedal arm 30 mounted on the pedal member 10 so as to be rotatable in an anteroposterior direction on an upper side of the pedal hinge 20; A fixed shaft 40 disposed at a front upper side of the pedal hinge 20 and having both ends fixed to the pedal member 10; A pedal bracket 60 having one end fixedly coupled to the hinge pipe 50 through which the pedal hinge 20 passes and the other end protruding forward and having a guide hole 61 formed at the other end; And the pedal bracket 60 while being connected to the fixed shaft 40 and the pedal bracket 60 so as to be rotatable relative to the fixed shaft 40 and the pedal bracket 60, And an elastic force providing mechanism 70 for providing an elastic force to the pedal arm 30 so as to provide a returning force to the pedal arm 30 or increase the forward rotation of the pedal arm 30 by the accumulated elastic force .

The hinge pipe 50 is integrally coupled to the pedal arm 30 while passing through an upper portion of the pedal arm 30 in the lateral direction. The pedal hinge 20 is connected to the pedal member 10, The pedal arm 30 and the hinge pipe 50 are structured to be rotatable about the pedal hinge 20 in the forward and backward directions do.

The pedal bracket (60) has a pair of the pedal brackets (60) fixedly coupled to the hinge pipe (50) so that one end thereof is in close contact with both side surfaces of the pedal arm (30) And the other ends are spaced apart to face each other.

The guide hole 61 is formed to penetrate in a lateral direction of the pedal bracket 60 and to form a closed space in forward and backward directions. In the intermediate portion along the vertical direction in the guide hole 61, The protrusion 61a and the rear protrusion 61b are formed to protrude inward of the guide hole 61. The width D1 of the guide hole 61 in the front- And the rear protrusions 61b are formed to be the narrowest and to be gradually widened in the vertical direction.

The elastic force providing mechanism 70 according to the present invention includes a rotation pin 71 inserted between the pair of pedal brackets 60 and having both ends thereof pivotally coupled to the pedal bracket 60; A guide rod (72) having one end coupled to the fixed shaft (40) so as to be rotatable about its axis and the other end configured to pass through the rotation pin (71); A spring washer 73 fitted in the guide rod 72 so as to be positioned in the guide hole 61; And a spring washer 73 that is fitted to the guide rod 72 so as to be supported at both ends of the rotation pin 71 and the spring washer 73, And a compression spring (74).

A pin hole 71a is formed in the rotation pin 71 so as to pass through the guide rod 72 in the forward and backward directions. And a washer hole 73a through which the guide rod 72 passes is formed in the spring washer 73. The guide hole 73a is formed in the spring washer 73 so that the guide hole 72a can penetrate through the rod hole 72a.

The rotation pin 71 is rotatably coupled to the rear projection 61b of the pedal bracket 60 while avoiding the guide hole 61. The spring washer 73 urges the elastic force of the compression spring 74 When the guide rod 72 is axially rotated about the fixed shaft 40 while being installed in a state of being in contact with the front surface of the guide hole 61 formed with the front protruding portion 61a by the front protruding portion 61a Is formed so as to be movable along the front surface of the guide hole 61 formed therein.

A bracket hole 62 for coupling the rotation pin 71 is formed in a side portion of the pedal bracket 60 where the rear protrusion 61b is formed.

The washer hole 73a formed in the spring washer 73 so that the guide rod 72 passes through the spring washer 73 when the guide rod 72 rotates about the fixed shaft 40 And is formed in an elliptical shape having a larger diameter in the up-and-down direction than a left-to-right direction diameter so as to be easily moved along the front surface of the guide hole 61 while rotating up and down.

That is, when the guide rod 72 connected to the pedal bracket 60 is pivoted about the fixed shaft 40 by forward rotation of the pedal arm 30, the spring washer 73 urges the elastic force of the compression spring 74 The resilient force providing mechanism 70 must be able to move along the front surface in a state of being in tight contact with the front surface of the guide hole 61 formed with the front protruding portion 61a so that the resilient force is applied to the pedal arm 30 The washer hole 73a formed in the spring washer 73 may be provided to the pedal arm 30 so as to provide an elastic force to the pedal arm 30 to increase the forward rotation of the pedal arm 30. For this purpose, It is preferable that the guide groove 72 is formed in an elliptical shape having a larger diameter in the vertical direction than in the horizontal direction along the vertical direction of rotation about the fixed shaft 40.

If the washer hole 73a has an elliptical shape with a diameter equal to the diameter of the guide rod 72 in the vertical direction and a larger diameter in the horizontal direction or a garden shape having the same diameter as the guide rod 72, The spring washer 73 can not move along the front surface of the guide hole 61 formed with the front protruding portion 61a so that the elastic force providing mechanism 70 May not be able to provide a return force to the pedal arm 30 and also can not perform the function of increasing the forward rotation of the pedal arm 30. [

5, a center line L1, which is a straight line connecting the center of rotation of the fixed shaft 40 and the rotational pin 71, is formed on the fixed shaft 40 and the pedal hinge 20, the compression spring 74 returns the pedal arm 30 to the initial position by the accumulated elastic force, so that the pedal arm 30 30 can be provided with a returning force that always rotates rearward by the accumulated elastic force.

When the pedal arm 30 is provided with the returning force by the accumulated elastic force of the compression spring 74, it is possible to prevent the pedal arm 30 from shaking, Thus, a more reliable connection between the clutch disc and the flywheel can be achieved, which makes it possible to use the clutch disc and the flywheel without damaging the parts even in a high-horsepower vehicle having a high engine output.

6, a center line L1, which is a straight line connecting the rotation center of the fixed shaft 40 and the rotation pin 71, is parallel to the rotation center of the fixed shaft 40 and the pedal hinge 20, The compression spring 74 is maximally compressed. At this time, the compression spring 74 applies the maximum reaction force to the pedal arm 30 with the highest accumulated elastic force .

7, a center line L1, which is a straight line connecting the rotation center of the fixed shaft 40 and the rotation pin 71, is parallel to the rotation center of the fixed shaft 40 and the pedal hinge 20, The compression spring 74 increases the forward rotation of the pedal arm 30 by the accumulated elastic force from the moment when the compression spring 74 passes through the reference line L2 connected to the compression spring 74 and moves upward.

Hereinafter, the operation of the embodiment of the present invention will be described.

5 is an initial state in which the pedal arm 30 is rotated to the maximum in the driver's direction, that is, before the driver depresses the pedal arm 30 or before the pedal arm 30 is subjected to the force.

At this time, a center line L1, which is a straight line connecting the rotation axes of the fixed shaft 40 and the rotation pin 71, is connected to a reference line L2 The spring washer 73 is in a state of being in contact with the front surface of the guide hole 61 formed with the front protrusion 61a in the guide hole 61 formed in the pedal bracket 60, And is positioned above the front projection 61a.

When the pedal arm 30 is in the initial state, the compression spring 74 pushes the pedal arm 30 by the accumulated elastic force. Therefore, the pedal arm 30 is biased by the elastic force of the compression spring 74 It is possible to prevent the pedal arm 30 from being shaken and further to induce the full return of the pedal arm 30, As a result, it is possible to use the vehicle without damaging the parts even in a high-horse power vehicle having a high engine output.

5, when the pedal arm 30 is gradually rotated forward (arrow R1 in FIG. 5) due to operation of the pedal arm 30 of the driver, the pedal bracket 60 connected to the pedal arm 30 The guide rod 72 connected to the pedal bracket 60 by the rotation of the pedal bracket 60 is rotated in the clockwise direction in the state shown in Fig. The spring washer 73 is rotated in the counterclockwise direction around the other end coupled with the front protrusion 61. The spring washer 73 is in contact with the front surface of the guide hole 61 formed with the front protrusion 61a, And gradually moves toward the maximum vertex of the second lens 61a.

As the spring washer 73 gradually moves toward the maximum vertex of the front projection 61a in accordance with the forward rotation of the pedal arm 30 as described above, the compression spring 74 gradually compresses, The pedal arm 30 receives the reaction force generated by the pedal arm 74 so that the driver can feel the pedal arm 30 ascend.

As shown in FIG. 6, the center line L1, which connects the center of rotation of the fixed shaft 40 and the center of rotation of the rotary pin 71 in a continuous forward rotation of the pedal arm 30, The spring washer 73 is positioned at the maximum vertex of the front protruding portion 61a in a state in which the spring washer 73 is in close contact with the front surface of the guide hole 61, The compression spring 74 is in its fully compressed state, and the driver's feel power is at its maximum.

7, the spring washer 73 is moved from the moment when the center line L1 passes through the reference line L2 to the upper side as the forward projection 61a The maximum accumulated elastic force of the compression spring 74 is transmitted to the pedal bracket 60 via the rotation pin 71. This causes the pedal arm 30 to move in the forward rotation direction The force of forward rotation of the compression spring 74 is received by the spring force of the compression spring 74. Accordingly, a large reduction force for the leg force can be generated thereby greatly reducing the legibility of the driver. As a result, The reduced feeling of fatigue during operation of the pedal arm 30 is reduced.

As described above, according to the embodiment of the present invention, in the initial state in which the pedal arm 30 is not operated, the accumulated spring force of the compression spring 74 constituting the elastic force providing mechanism 70 causes the pedal arm 30 The clutch disk and the flywheel can be more reliably connected to each other. As a result, even a high-horsepower vehicle with a high engine output can be used without damaging the parts.

A center line L1 connecting the center of rotation of the fixed shaft 40 and the center of rotation of the rotary pin 71 is connected to the fixed shaft 40 and the pedal hinge 20 in accordance with the full stroke operation of the pedal arm 30. [ The compression spring 74 that has been compressed to the maximum extent from the instant when the spring washer 73 passes the maximum vertex of the front projection 61a passes the pedal arm 30 through the reference line L2, The pedal arm 30 is pushed forward with a large elastic force. Accordingly, when the pedal arm 30 is rotated forward, the forward rotation of the pedal arm 30 is increased. As a result, The driver's feeling of power is greatly reduced. As a result, the driver has the advantage that the fatigue of the pedal arm 30 is greatly reduced.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the following claims It will be apparent to those of ordinary skill in the art.

10 - Pedal member 20 - Pedal hinge
30 - Pedal arm 40 - Fixed shaft
50 - Hinge Pipe 60 - Pedal Bracket
70 - elastic force providing device 71 - rotating pin
72 - Guide rod 73 - Spring washer
74 - Compression spring

Claims (9)

A fixed shaft disposed at a front upper portion of the pedal hinge that serves as a rotation center of the pedal arm and having both ends fixed to the pedal member;
A pedal bracket having one end fixedly coupled to the hinge pipe through which the pedal hinge penetrates and the other end protruding forwardly and having a guide hole formed at the other end; And
The pedal arm is provided rotatably with respect to the fixed shaft and the pedal bracket while connecting the fixed shaft and the pedal bracket and is provided with a returning force to the pedal arm by an elastic force accumulated according to a change in forward rotation angle of the pedal arm, And an elastic force providing mechanism for applying an elastic force to the pedal arm so as to increase forward rotation of the pedal arm. The method according to claim 1,
Wherein the pedal bracket comprises a pair of pedal brackets fixedly coupled to the hinge pipe so that one end thereof is in close contact with both side surfaces of the pedal arm and the other end of the pedal bracket protrudes in parallel to the front side. The method of claim 2,
Wherein the guide hole is formed to pass through the pedal bracket in the lateral direction and form a closed space in the front-rear direction;
A front protruding portion and a rear protruding portion which are opposed to each other are formed at an intermediate portion in the vertical direction in the guide hole;
Wherein the width of the guide hole in the front-rear direction is narrowest between the front projection and the rear projection, and is gradually widened in the vertical direction. The method of claim 3,
The elastic force providing mechanism includes a rotary pin inserted between the pair of pedal brackets and having opposite ends coupled to the pedal bracket so as to be rotatable about an axis;
A guide rod having one end coupled to the fixed shaft so as to be rotatable about its axis and the other end configured to pass through the rotation pin;
A spring washer fitted into the guide rod to be positioned in the guide hole; And
And a compression spring that is fitted to the guide rod and is provided with both ends supported by the rotation pin and the spring washer so as to provide an elastic force such that the spring washer is brought into close contact with the guide hole. . The method of claim 4,
The rotation pin is rotatably coupled to the rear projection of the pedal bracket by avoiding the guide hole;
The spring washer is installed in contact with the front surface of the guide hole formed by the elastic force of the compression spring, and when the guide rod is rotated about the fixed shaft, the front surface of the guide hole, Wherein the pedal is provided so as to be capable of moving along the vehicle. The method of claim 5,
Wherein the washer hole of the spring washer penetrates through the guide hole when the guide rod is axially rotated about the fixed axis so that the spring washer is vertically rotated to easily move along the front face of the guide hole, Is formed to have an elliptical shape larger than the left and right direction diameters. The method of claim 4,
When the center line connecting the fixed axis and the rotation center of the rotation pin is located below the reference line connecting the fixed axis and the center of rotation of the pedal hinge in a straight line, the compression spring causes the pedal arm And returns to the initial position. The method of claim 4,
The compression spring is maximally compressed when the center line connecting the fixed shaft and the rotation center of the rotary pin in a straight line is aligned with a reference line that is a straight line connecting the rotation center of the pedal hinge and the fixed shaft, And provides the maximum reaction force to the arm. The method of claim 4,
From the instant when the center line connecting the fixed shaft and the rotation center of the rotation pin is linearly positioned through the reference line connecting the fixed shaft and the rotation center of the pedal hinge upward, And the forward rotation of the pedal arm is increased.
KR20140038036A 2014-03-31 2014-03-31 Apparatus for reducing effort of clutch pedal KR101510047B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101535024B1 (en) * 2014-06-03 2015-07-07 현대자동차주식회사 Apparatus for reducing effort of clutch pedal
CN114060422A (en) * 2021-12-14 2022-02-18 江铃汽车股份有限公司 Novel normal contact type clutch system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0546268A (en) * 1991-08-13 1993-02-26 Nissan Motor Co Ltd Assist structure for clutch pedal
KR100820241B1 (en) 2007-06-26 2008-04-08 주식회사 동희산업 Clutch pedal apparatus for vehicle
KR20120118913A (en) * 2011-04-20 2012-10-30 쌍용자동차 주식회사 Return spring of clutch pedal for automobile
KR20150006542A (en) * 2013-07-09 2015-01-19 현대자동차주식회사 Apparatus for reducing effort of clutch pedal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0546268A (en) * 1991-08-13 1993-02-26 Nissan Motor Co Ltd Assist structure for clutch pedal
KR100820241B1 (en) 2007-06-26 2008-04-08 주식회사 동희산업 Clutch pedal apparatus for vehicle
KR20120118913A (en) * 2011-04-20 2012-10-30 쌍용자동차 주식회사 Return spring of clutch pedal for automobile
KR20150006542A (en) * 2013-07-09 2015-01-19 현대자동차주식회사 Apparatus for reducing effort of clutch pedal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101535024B1 (en) * 2014-06-03 2015-07-07 현대자동차주식회사 Apparatus for reducing effort of clutch pedal
CN114060422A (en) * 2021-12-14 2022-02-18 江铃汽车股份有限公司 Novel normal contact type clutch system
CN114060422B (en) * 2021-12-14 2024-03-15 江铃汽车股份有限公司 Novel constant contact clutch system

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