KR101331375B1 - A clutch pedal assembly - Google Patents

Abstract

The present invention provides user convenience by improving pedal efforts through a bush inserted into the center of a clutch arm as a spring rod is inserted into the bush and by improving at least 30 N of the pedal efforts, which is returned to an initial position by supplying a clutch pedal assembly facilitating a work as the spring rod inserted into the bush can be inserted into one side among the sides of the clutch arm.

Description

Clutch pedal assembly

The present invention relates to a clutch pedal assembly, and more particularly, to a clutch pedal assembly that spring force is inserted to improve the turning force through the bush is inserted into the center of the clutch arm.

In general, a clutch pedal installed in a vehicle is a pad installed on the clutch pedal to prevent a user's foot from slipping, a spacer installed on one end of the clutch pedal to maintain a gap between the bracket fixed to the vehicle body, the bracket and the spacer The connecting bolt for connecting the bracket, one end of the bracket assist is installed at a predetermined position of the clutch pedal, one end is fitted to the bracket assist, and the other end is composed of a spring installed to be fixed to the vehicle body.

At this time, the spring is a spring seat is installed and the spring seat is fixed by the pin of the bracket assist.

On the other hand, when the clutch pedal is configured as described above, the clutch pedal is moved from point A to point B as shown in Figure 2, at this time, when moving from the point A point to point B to extend the spring installed on the bracket assist to the foot While reducing the calendar felt, there was a problem that the joint occurs due to the friction between the pin and bracket assist and the spring seat.

In addition, the vibration occurs when the spring is expanded, there is a problem that the vibration is transmitted to the pedals to give the driver discomfort.

The double torsion spring clutch pedal designed to improve the above-mentioned problem is designed so that the spring force is zero in the full stroke section.

At this time, the U-shaped bush is applied to the pedal mounting part of the spring so that the force acts only on the bottom of the bush.

However, the pedaling force generated at the return of the pedal was dependent on the clamping force of the clutch disc, and thus there was a difficulty in developing the characteristic.

In addition, when the clutch arm is moved by an external force in its original position, there is a problem that the torsion spring is separated from the U-shaped open part.

SUMMARY OF THE INVENTION An object of the present invention for solving the above problems is to provide a clutch pedal assembly that prevents the detachment of the torsion spring inserted in the center of the clutch arm and at the same time improves the return force to its original position.

It is also an object of the present invention to provide a clutch pedal assembly that can be inserted into either side of the clutch arm with the spring rod inserted into the bush.

Clutch pedal assembly according to the present invention for solving the above problems is a housing; A clutch arm rotatably connected to one side of the housing; A torsion spring inserted into a torsion spring hole formed on both sides of the housing; And a bush having one side open to be inserted into a spring rod connecting between the springs of the torsion spring, wherein the bush in the state where the spring rod is inserted is fastened to a bush fixing hole formed at the center of the clutch arm. The torsion spring is prevented from escaping to the outside, and the torsion spring inserted into the bush is rotatable in the rotational direction and is constrained in all directions other than the rotational direction to act as the clutch arm moves. It is characterized by doubled.

Preferably, the clutch pedal assembly further includes a pedal mounted on the other side of the clutch arm, and when the external force is applied to the pedal, the clutch arm is in a second position in a direction in which the external force is applied in a first position. It characterized in that to move to.

Preferably, the hold down force generated when the clutch arm returns from the second position to the first position is 40 to 70 N.

Preferably, the bush is a protruding member extending a predetermined distance from the center of the circular plate; And a plurality of key grooves dividing the protruding member radially from the center of the circular plate.

Preferably, both ends of the bush into which the spring rod is inserted are in contact with or spaced apart from each other.

Preferably, the bush is inserted from the side of the clutch arm.

As described above, the present invention prevents the torsion of the torsion spring inserted into the center of the clutch arm and at the same time improves the return force to the original position by 30N or more, thereby providing user convenience.

In addition, the present invention can be inserted into any one of the side of the clutch arm in the state that the spring rod is inserted into the bush has an easy effect on the operation.

1 is a perspective view of a clutch pedal assembly according to an embodiment of the present invention;
2 is a side view in one direction of a clutch pedal assembly according to an embodiment of the present invention;
Figure 3 is a perspective view in one direction showing that inserted into the torsion spring bush of the present invention,
Figure 4 is a perspective view from one direction showing the position change of the clutch arm, pedal and bush fixing hole of the present invention, and
Figure 5 is a graph showing the force that changes in accordance with the full stroke of the clutch arm of the clutch pedal assembly according to an embodiment of the present invention.

Components constituting the clutch pedal assembly of the present invention may be used integrally or separately separated as needed. In addition, some components may be omitted depending on the usage form.

A preferred embodiment of the clutch pedal assembly 100 according to the present invention will be described with reference to FIGS. 1 to 5. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be described based on the contents throughout the specification.

In the present invention, the term 'first position' means the position of the clutch arm shown in the left side in FIG. 2 throughout the specification.

In addition, the term 'second position' in the present invention means the position of the clutch arm shown on the right side in FIG. 2 throughout the specification.

In addition, the term 'response force' in the present invention means the force that the clutch arm returns from the second position to the first position throughout the specification.

Hereinafter, the clutch pedal assembly 100 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5.

Clutch pedal assembly 100 according to an embodiment of the present invention is connected to the housing 110, the housing 110, the power transmission unit for rotating reciprocating motion by an external force, the bush 130 and the housing coupled to the power transmission unit And a torsion spring 140 inserted into the torsion spring hole 112 formed on both sides of the 110.

The housing 110 may include a clutch arm hole 111 formed at one surface of the housing 110 and a lower portion of the clutch arm hole 111 so that a bolt may be inserted into one side of the clutch arm 121 to be described later. It includes a torsion spring hole 112 formed on both sides.

As illustrated in FIG. 1, the clutch arm hole 111 penetrates both upper surfaces of the housing 110 and is formed to correspond to a hole (not shown) formed in one side of the clutch arm 121. A bolt is inserted into the clutch arm hole 111 so that the clutch arm 121 is connected to the housing 110 to be rotatable.

The torsion spring hole 112 is formed to penetrate the lower both sides of the clutch arm hole 111, such a torsion spring hole 112 is connected to both ends of the torsion spring 140 and restrains all degrees of freedom except the rotation direction.

The power transmission unit includes a clutch arm 121 rotatably connected to one side of the housing 110 and a bush fixing hole 121a formed through the center of the clutch arm 121.

The clutch arm 121 has one side connected to the housing 110 and the other side connected to the pedal 122. The clutch arm 121 serves to transmit the external force transmitted from the pedal 122 to the torsion spring 140.

That is, when an external force is applied to the pedal 122, the clutch arm 121 moves from the first position to the second position in the direction in which the external force is applied.

On the other hand, it is preferable that the hold down force generated when the clutch arm 121 returns from the second position to the first position is 40 to 70N.

The bush fixing hole 121a is a hole into which a bush into which the spring rod 141 is to be described is inserted is inserted and fixed, and is opened in one direction as shown in FIG. 4.

On the other hand, the bush fixing hole 121a is formed at another point, such as A or B point as shown in Figure 4 can adjust the characteristics of the stepping force.

That is, the torsion spring 140 inserted into the bush 130 is changed in the restoring force or elastic force according to the position inserted into the clutch arm 121, so that the position of the bush fixing hole 121a into which the bush 130 is inserted is changed. By doing so, the characteristics of the ability can be changed.

The pedal 122 is mounted on the other side of the clutch arm 121, and the pedal 122 serves to transmit the force transmitted from the user's foot to the clutch arm 121.

The bush 130 is open at one side to be inserted into the spring rod 141 connecting the springs of the torsion spring 140.

That is, the bush 130 in the state in which the spring rod 141 is inserted into the bush fixing hole 121a formed in the central portion of the clutch arm 121.

More specifically, both ends of the bush 130 into which the spring rod 141 is inserted may be moved in contact with or spaced apart from each other.

In addition, the bush 130 has an advantage that can be easily replaced as the bush 130 can be inserted from the side of the clutch arm 121.

The bush 130 includes a protruding member extending a predetermined distance from the center of the circular plate and a plurality of key grooves 131 dividing the protruding member radially from the center of the circular plate.

Torsion spring 140 is a spring used in automobiles, and refers to a rod-shaped spring steel using a property of returning to its original position due to stiffness when twisted. The shock absorber should be used together because there is no damping action by vibration like coil spring.

An oil press (not shown) connected to the clutch arm 121 according to a change in the position of the clutch arm 121 inserted into the torsion spring hole 112 formed on both surfaces of the housing 110 and moving between the first position and the second position. ) Or the restoring force transmitted to the clutch arm 121 is applied differently.

The spring rod 141 is a member connecting the spring to the spring as shown in FIG. 3. The spring rod 141 is inserted into the bush 130, one side is open.

Hereinafter, referring to FIG. 5, when the conventional U-shaped bush and the bush 130 of the present invention are applied to the clutch arm 121, the validity verification results for each item will be described.

The horizontal axis shown in Figure 5 means the distance traveled (mm) of the pedal, the vertical axis means the force transmitted to the pedal.

In other words, the graph shown by the red line shows the change in force with the pedal distance in one cycle.

 The upper graph of the graph shown as red line shows the case when the first user applies the force to the pedal to the end. The power gradually increases until the entire section (D) and the C section, and the applied force decreases. It seems to increase again. At this time, the clutch arm 121 is moved from the first position to the second position.

On the other hand, when the clutch arm 121 returns from the second position to the first position, the force change increases or decreases in the reverse order of the cycle described above.

According to the present invention, as the position of the bush 130 is positioned so that the compression force of the torsion spring 140 can be applied at the full stroke, an improvement effect of 30 N or more occurs than the prior art.

More specifically, referring to [Table 1] which is the result of the prior art applying the U-shaped bush to the clutch arm and [Table 2] which is the result of the clutch pedal assembly 100 according to the embodiment of the present invention, Same as

However, note that the maximum and minimum in [Table 1] and [Table 2] represent ideal specifications for the items F1 to F7.

power
(force) unit
(units) at least
(Min) maximum
(Max) First embodiment
(C14 CTF) Second embodiment
(C145 Production) F1 Newtons 80 135 123 102 102 100 95 108 F2 Newtons 40 70 29 23 24 40 31 43 F3 Newtons 15 30 15 25 26 30 30 27 F4 Newtons 5 20 5 16 17 18 17 15 F5 Newtons 5 45 5 35 37 30 35 32 F6 Newtons 10 30 10 50 51 35 34 38 F7 Newtons 5 25 5 43 41 31 29 33

Forces
Units Target specification Improve performance
Min Max The first experiment Second experiment F1 Newtons 80 135 104.3 103.2 F2 Newtons 40 70 52.1 57.0 F3 Newtons 15 30 21.5 20.4 F4 Newtons 5 20 10.5 10.5 F5 Newtons 5 45 39.7 38.0 F6 Newtons 10 30 20.8 18.7 F7 Newtons 5 25 12.5 8.0

F1: Maximum force on the pedal (release)

F2: Hold Down Force

F3: Initial force applied (deviation)

F4: Initial force applied

F5: hysteresis

F6: reduced force (deviation)

F7: reduced force (intervention)

The present invention is to improve the hold down force as the clutch arm 121 moves from the second position to the first position.

Looking at [Table 1] it was confirmed that the average of the prior art is 25.3N, another prior art is 38N in the target specification 40N ~ 70N range.

However, looking at [Table 2] which is an experimental result of the present invention, the first experiment and the second experiment result of the step of the present invention was found to satisfy the target specification range of 40N ~ 70N as 52.1N, 57N, respectively.

This result is to insert the circular bush 130 in the center of the torsion spring 140 to constrain the spring force in all directions except the rotational direction in the bush 130, the bush 130 to the side of the clutch arm 121 Insertion shows the result of preventing the departure of the bush 130 itself by the spring force.

That is, the torsion spring 140 inserted into the bush 130 is rotatable in the rotational direction and is constrained in all directions other than the rotational direction to double the spring force acting according to the movement of the clutch arm 121.

This structure has a 30N or more improvement effect than the prior art by positioning the position of the bush 130 so that the spring compression force acts during the full stroke.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the present invention can be changed.

100: clutch pedal assembly
110: Housing
111: clutch arm hole
112: torsion spring hole
121: clutch arm
121a: Bush fixing hole
122: pedal
130: bush
131: keyway
140: torsion spring
141: spring loaded

Claims (6)

housing;
A clutch arm rotatably connected to one side of the housing;
A torsion spring inserted into a torsion spring hole formed on both sides of the housing; And
And a bush open at one side to be inserted into a spring rod connecting the springs of the torsion spring.
The bush in the state that the spring rod is inserted is fastened to the bush fixing hole formed in the central portion of the clutch arm to prevent the torsion spring is separated out,
The torsion spring inserted into the bush is rotatable in the rotational direction and at the same time all directions other than the rotational direction is constrained to double the spring force acting according to the movement of the clutch arm,
Clutch pedal assembly.
The method of claim 1,
The clutch pedal assembly,
Further comprising a pedal mounted to the other side of the clutch arm,
When the external force is applied to the pedal, the clutch arm is moved from the first position to the second position in the direction in which the external force is applied,
Clutch pedal assembly.
3. The method of claim 2,
Characterized in that the hold down force generated when the clutch arm returns to the first position from the second position is 40 to 70 N,
Clutch pedal assembly.
The method of claim 1,
The bush,
A protruding member extending a predetermined distance from the center of the circular plate; And
And a plurality of key grooves which radially divide the protruding member from the center of the circular plate.
Clutch pedal assembly.
5. The method of claim 4,
Both ends of the bush in which the spring rod is inserted are in contact with or spaced apart from each other,
Clutch pedal assembly.
The method of claim 5, wherein
The bush is inserted from the side of the clutch arm,
Clutch pedal assembly.

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