KR20170078137A - Parking brake apparatus for vehicle - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parking brake apparatus for a vehicle, and more particularly to a parking brake apparatus for a vehicle, which comprises a parking brake lever for pulling or pressing in a state gripped by a driver; A rotating bracket rotatable in association with the parking brake lever; A fixing bracket coupled to the pivotal bracket by a hinge and fixedly coupled to the vehicle body; And one end of the rotation bracket is connected to the rotation bracket and the other end of the rotation bracket is connected to the fixing bracket. When the rotation bracket rotates with respect to the fixing bracket from the hinge, a load is applied to a predetermined section, And an elastic member to which a tidal force is applied at the time when the section has elapsed.

Description

[0001] The present invention relates to a parking brake apparatus for vehicle,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a parking brake apparatus for a vehicle, and more particularly, to a parking brake apparatus for a vehicle which enables a vehicle to be maintained in a parked state.

2. Description of the Related Art Generally, a parking brake apparatus for a vehicle is a device for keeping a vehicle stopped during parking and stopping of a vehicle, including a hand brake type in which a driver pulls a lever by hand, A foot brake type that is acted upon by the foot is provided.

Of these, in the case of the hand brake type, the parking brake lever is installed so as to be rotatably externally exposed between the driver's seat and the front passenger's seat. When the driver pulls the parking brake lever, the operation force of the parking brake lever is transmitted to the left and right wheels Evenly distributed.

Since the wheel cable is connected between the equalizer and the brake shoe, when the parking brake lever is pulled, the wheel cable is pulled to move the brake shoe so that the lining is brought into close contact with the drum of the wheel, State.

At this time, tension of a predetermined magnitude acts on the connecting cable connecting the pivotal bracket interlocking with the parking brake lever and the equalizer, as well as the cable for the wheel, so that when the driver pulls the parking brake lever, Gradually it takes a lot of power.

Therefore, when the tension of the cable for the wheel and the tension of the connecting cable are somewhat loosened, a clearance may be generated between the rotating bracket and the parking brake lever relative to the fixing bracket fixed to the vehicle body. .

In addition, as described above, when the tension of the cable for the wheel and the tension of the cable for connection of the wheel are adjusted to be slightly tight, the pulling force of the parking brake lever by the tension of the cable for the wheel and the connection cable is largely applied. There is a problem in that the parking brake lever can not be operated easily in case of the elderly or the like.

Japanese Patent Application Laid-Open No. 2003-072531 (Mar. 13, 2003)

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a parking brake apparatus and a parking brake system that prevent vibrations and noise caused by a clearance of a parking brake lever, And a lightweight operation feeling is given from the point in time when the predetermined section has elapsed, thereby providing a vehicle parking brake apparatus in which the sensibility of the feeling is improved significantly.

Another problem to be solved by the present invention is that a load greater than a certain size acts during the initial operation of the parking brake lever, while a portion where the tension of the cable for a wheel and the connecting cable largely acts is generated by an assist force It is possible to operate the parking brake lever even with a relatively small force so that the elderly including the female driver can more easily operate and release the parking brake.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a parking brake apparatus for a vehicle, comprising: a parking brake lever which is pulled or pressed in a state held by a driver; A rotating bracket rotatable in association with the parking brake lever; A fixing bracket coupled to the pivotal bracket by a hinge and fixedly coupled to the vehicle body; And one end of the rotation bracket is connected to the rotation bracket and the other end of the rotation bracket is connected to the fixing bracket. When the rotation bracket rotates with respect to the fixing bracket from the hinge, a load is applied to a predetermined section, And may include an elastic member to which a tidal force is applied at a time point when the section has elapsed.

The elastic member may be a torsion spring.

The elastic member includes a torsion portion wound in at least one row; A first connection portion extending in one direction of the torsion portion; And a second connection portion extending in the other direction of the torsion portion.

The torsion portion is provided in a pair so as to be respectively disposed on both surfaces of the rotation bracket, and at least one of the first connection portion and the second connection portion is connected to each other so that the torsion portion, the first connection portion, 2 The connection part can be integrated.

One of the first connection portion and the second connection portion may be connected to a first link member fixedly coupled to the rotation bracket and the other connection portion may be connected to a second link member fixedly coupled to the fixed bracket have.

On the other hand, when the hinge is located on an imaginary line connecting the first connecting portion and the second connecting portion of the elastic member, the turning bracket rotates about the hinge with respect to the fixing bracket, have.

Here, when the parking brake lever is pulled, when the hinge is positioned below the virtual line, a tidal force is generated by the resilient restoring force, and when the parking brake lever is pressed, the hinge is moved to the lower side When the elastic member is positioned, a load due to a compressive force can be applied to the elastic member.

When the parking brake lever is pulled, when the hinge is located above the imaginary line, a load by the compressive force is applied to the elastic member. When the parking brake lever is depressed, the hinge is positioned on the virtual line The elastic member can generate a tidal force by an elastic restoring force.

Further, when the parking brake is not operated, the first connecting portion and the second connecting portion of the elastic member may be spaced apart by a compressive force.

In addition, the hinge may have a moment acting in a direction in which the virtual line is located.

Other specific details of the invention are included in the detailed description and drawings.

According to the parking brake apparatus for a vehicle according to the embodiment of the present invention, vibration and noise due to the clearance of the parking brake lever can be prevented.

Further, according to the parking brake apparatus for a vehicle according to the embodiment of the present invention, when a driver operates the parking brake lever, a feeling of weight is given up to a certain period and a light operation feeling is given from the point in time when the predetermined section has elapsed, The quality can be greatly improved and the effect of increasing the customer satisfaction can be provided.

According to the parking brake apparatus for a vehicle according to the embodiment of the present invention, a load greater than a certain magnitude is applied during the initial operation of the parking brake lever, while at the portion where the tension of the wheel cable and the connecting cable largely acts, It is possible to operate the parking brake lever even with a relatively small force due to the occurrence of an accident, so that the elderly person including the female driver can more easily operate and release the parking brake.

The effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the specification.

1 is a perspective view showing the internal configuration of a parking brake apparatus for a vehicle according to an embodiment of the present invention;
Figure 2 is a front view of Figure 1;
3 is an enlarged perspective view showing a mounting relation of an elastic member in a parking brake apparatus for a vehicle according to an embodiment of the present invention.
Figure 4 is a plan view of Figure 3;
Fig. 5 is a perspective view of the elastic member in Fig. 3; Fig.
6 to 9 are partially enlarged views sequentially showing a displacement process of an elastic member according to a pulling action of a parking brake lever in a parking brake apparatus for a vehicle according to an embodiment of the present invention.
10 is a graph graphically showing a load change amount of an elastic member according to an operation of a parking brake lever in a state in which tension of a cable for a wheel and a connection cable is not applied, in a parking brake apparatus for a vehicle according to an embodiment of the present invention.
FIG. 11 is a graph graphically showing a load change amount of an elastic member according to an operation of a parking brake lever in a state where a tensile force of a cable for a wheel and a connecting cable is applied in a parking brake apparatus for a vehicle according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Thus, in some embodiments, well known process steps, well-known structures, and well-known techniques are not specifically described to avoid an undue interpretation of the present invention.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It should be understood that the terms comprising and / or comprising the terms used in the specification do not exclude the presence or addition of one or more other components, steps and / or operations other than the stated components, steps and / . And "and / or" include each and any combination of one or more of the mentioned items.

Further, the embodiments described herein will be described with reference to the perspective view, cross-sectional view, side view, and / or schematic views, which are ideal illustrations of the present invention. Thus, the shape of the illustrations may be modified by manufacturing techniques and / or tolerances. Therefore, the embodiments of the present invention are not limited to the specific forms shown, but also include changes in the forms that are generated according to the manufacturing process. In addition, in the respective drawings shown in the embodiments of the present invention, the respective constituent elements may be somewhat enlarged or reduced in view of convenience of description.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a parking brake apparatus for a vehicle according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing the internal construction of a parking brake apparatus for a vehicle according to an embodiment of the present invention, and FIG. 2 is a front view of FIG.

As shown in the figure, a parking brake apparatus 100 for a vehicle according to an embodiment of the present invention includes a parking brake lever 110 which is pulled upward or downward when the driver grasps with the hand, A fixed bracket 140 fixed to the vehicle body and coupled to the pivotal bracket 130 by a hinge 132 and a parking bracket 140 fixed to the vehicle body and a parking brake lever 110 pivotally coupled to the parking brake lever 110, And may include an elastic member that applies a load up to a certain period and removes a load by a reaction force action when a certain period of time elapses and gives an assist force.

The parking brake lever 110 is engaged with the pivotal bracket 130 so as to be operatively connected to the vehicle body while being pulled up or pressed downward while the driver grips the vehicle by hand. The pivotal bracket 130 is fixedly coupled to the vehicle body And can be coupled to the fixing bracket 140 with the hinge 132.

Therefore, when the driver pulls the parking brake lever 110 upward or presses downward, the rotation bracket 130 can be rotated from the hinge 132, which is the joint portion with the fixing bracket 140 .

Here, the pivotal bracket 130 is provided with a toothed portion which can be held by the engagement portion (not shown), and the release button 120 disposed at the front end of the parking brake lever 110 Only when the engagement of the engagement portion with the toothed portion is released by the pressing action, the parking brake lever 110 may be pulled upward or pressed downward.

That is, when the driver depresses the release button 120 while holding the parking brake lever 110, the engagement of the engagement portion with the toothed portion is released, and in this state, the parking brake lever 110 is pulled upward, The user can perform an operation of pressing the button.

For example, when the driver holds the parking brake lever 110 and presses the release button 120 and pulls it upward, the rotation bracket 130 connected to the parking brake lever 110 moves the hinge 132 to the initial position The connecting cable 160 connecting the pivotal bracket 130 and the equalizer 170 and the cable for the wheel connecting the equalizer 170 and the brake shoe (not shown) As the brake shoe moves while being pulled, the lining can be brought into close contact with the drum of the wheel.

When the driver depresses the release button 120 and presses downward while the driver grasps the parking brake lever 110, the rotation bracket 130 connected to the parking brake lever 110 rotates from the hinge 132 Whereby the connecting cable 160 and the cables for the wheels are pulled out so that the brake shoe moves in the opposite direction, so that the lining can be separated from the drum of the wheel.

Such a braking device is configured such that when the parking brake lever 100 is pulled, the engagement portion rides over the toothed portion so that the parking brake lever 100 can be pulled out without depressing the release button 120. In order to release the parking brake, The release button 120 may be depressed only when the lever 100 is pressed downward to release the engagement of the engagement portion with respect to the toothed portion.

As described above, as described above, a load is applied to a certain section of the parking brake lever 110 during the pulling and pressing operation of the parking brake lever 110. At the time when a predetermined section has elapsed, the load is removed by the reaction force action, The torsion spring 200 can be used as a torsion spring.

Fig. 3 is an enlarged perspective view showing a mounting relation of a torsion spring as an elastic member in the parking brake apparatus for a vehicle according to the embodiment of the present invention, Fig. 4 is a plan view of Fig. 3, FIG.

3 to 5, a torsion spring 200, which is an elastic member applicable to a parking brake apparatus for a vehicle according to an embodiment of the present invention, includes torsion portions 210 and 220 arranged in a pair in parallel on both sides, A first connection part 212 and 222 extending in one direction of the torsion parts 210 and 220 and a second connection part 230 extending in the other direction of the torsion parts 210 and 220, ≪ / RTI >

Here, the torsion portions 210 and 220 may have a structure in which the torsion portions 210 and 220 are wound to have a circular shape of at least one row, and the first connection portions 212 and 222 extend in one direction from the torsion portions 210 and 220, And the second connection part 230 may extend from one of the torsion parts 210 and 220 to the other.

Accordingly, the torsion spring 200 may be integrally provided as shown in FIG. 5, since the second connection portions 230 of the torsion portions 210 and 220 are connected to each other.

In the parking brake apparatus 100 for a vehicle according to an embodiment of the present invention, the second connection portions 230 of the torsion spring 200, which is an elastic member, are connected to each other, And the second connection portions 230 may be provided as a pair of separate torsion springs 200 as the first connection portions 212 and 222 are separated as shown in FIG.

The first connection portions 212 and 222 may be connected to each other and the second connection portions 230 may be separated from each other and may be provided integrally with the first connection portions 212 and 222 and the second connection portions 230 may be connected As shown in Fig.

In the parking brake apparatus 100 for a vehicle according to the embodiment of the present invention, two pairs of torsion portions 210 and 220 are formed so that the torsion portions 210 and 220 are disposed on both surfaces of the rotation bracket 130, However, the present invention is not limited thereto. One torsion portion may be disposed on only one side surface of the rotation bracket 130. That is, the torsion portion may be provided as one.

One of the first connection portions 212 and 222 or the second connection portion 230 of the torsion spring 200 having such a configuration is connected to the rotation bracket 130 and the other connection portion is connected to the fixing bracket 140 The gap between the first connection portions 212 and 222 and the second connection portion 230 is reduced or widened when the pivotal bracket 130 is rotated from the hinge 132 with respect to the fixed bracket 140 .

The first connection portions 212 and 222 of the torsion spring 200 are coupled to the pivotal bracket 130 and the second connection portion 230 is coupled to the fixed bracket 140. In the parking brake apparatus 100 for a vehicle according to an embodiment of the present invention, As shown in FIG.

The first connection portions 212 and 222 of the torsion spring 200 are connected to the first link member 142 that can be fixedly coupled to both sides of the pivotal bracket 130 and the second connection portion is connected to the fixing bracket 140, The second link member 150 can be fixedly coupled to the second link member 150.

The first connecting portions 212 and 222 of the torsion spring 200 are connected to the first link member 142 fixedly coupled to the pivotal bracket 130, The first connection portions 212 and 222 of the torsion spring 200 are connected to the second link member 150 which is fixedly coupled to the fixing bracket 140. However, And the second connection portion 230 may be directly connected to the fixing bracket 140. [

The first connection portions 212 and 222 and the second connection portion 230 of the torsion spring 200 are disposed at positions spaced apart from each other with the torsion portions 210 and 220 interposed therebetween. A tensile force, which is an elastic restoring force for restoring to the original state, is exerted. The operation relation therebetween will be described in detail later.

As described above, the torsion spring 200 is connected to the first link member 142, which is fixed to both surfaces of the pivotal bracket 130, and the second connection portion 230, The pivotal movement of the parking brake lever 110 by the pulling or pushing action of the parking brake lever 110 causes the pivotal movement of the pivotal bracket 130 relative to the fixed bracket 140 with respect to the second link member 150, 132, the interval may be narrowed or widened.

That is, when the pivotal bracket 130 is rotated with respect to the fixed bracket 140 from the hinge 132, the second connection portion 230 of the torsion spring 200 is fixed to the fixed bracket 140 The first connection portions 212 and 222 of the torsion spring 200 are rotated in conjunction with the rotation bracket 130 so that the first connection portions 212 and 222 and the second connection portions 212 and 222 The interval of the second connection portions 230 may be narrowed or widened.

Here, the torsion spring 200 may be disposed at a position spaced apart from the hinge 132, which is coupled to the fixing bracket 140 so that the rotation bracket 130 is rotated by a predetermined angle.

More preferably, the first connection portions 212 and 222 may be disposed in the space between the hinge 132 and the second connection portion 230 of the torsion spring 200 such that the first connection portions 212 and 222 are rotated from the hinge 132.

The hinge 132 and the second connection part 230 are rotated at a fixed position and the first connection parts 212 and 222 are rotated in the space between the hinge 132 and the second connection part 230 The revolving center is centered.

Here, when the hinge 132 is positioned on the imaginary line 500 connecting the first connection portions 212 and 222 and the second connection portion 230 of the torsion spring 200 in a linear direction, And a load may be applied or a tidal force may be generated depending on a position where the hinge 132 is positioned with respect to the virtual line 500. The specific operation of the hinge 132 is as follows.

6 to 9 and 10 and 11, when the elastic member is given a load up to a certain section during a pulling operation and a pressing operation of the parking brake lever 110, and when a predetermined section has elapsed The function of removing the load by the reaction force action and generating the assist force will be described in detail.

6 to 9 are partially enlarged views sequentially showing a displacement process of an elastic member according to a pulling or pushing action of a parking brake lever in a parking brake apparatus for a vehicle according to an embodiment of the present invention.

6 is a partially enlarged view showing the positional relationship of the torsion spring 200 as an elastic member in a state in which the parking brake is released. FIG. 7 is a partial enlarged view showing the positional relationship of the torsion spring 200, 8 and 9 are partial enlarged views showing the positional relationship of the torsion spring 200 at the point where the load of the spring 200 or the generation of the tidal force is bent. Fig.

Referring to FIGS. 1, 2 and 6, when the parking brake lever 110 is completely lowered, that is, when the parking brake is released, the first connection portions 212 and 222 of the torsion spring 200 and the second connection portions 230 May be disposed at a position where the interval is narrower than the original state.

The first link member 142 and the second link member 142 are fixedly coupled to the pivotal bracket 130 by the first and second connection portions 212 and 222 and the second connection portion 230 of the torsion spring 200, The second link member 150 may be disposed at a position where the gap is narrower than a gap in a circular state in which a load is not applied to the torsion portion 210.220.

In this case, the hinge 132 is located on the upper side with respect to the virtual line 500 connecting the first connection portions 212 and 222 and the second connection portion 230.

Accordingly, the torsion portions 210 and 220 of the torsion spring 200 are elastically restored to the first and second connecting portions 212 and 222 and the second connecting portion 230, Thereby giving a tensile force.

Since the second connection portion 230 of the torsion spring 200 is connected to the second link member 150 fixedly coupled to the fixed bracket 140, the first link 130 fixedly coupled to the pivot bracket 130, The first connection portions 212 and 222 connected to the member 142 are given a tensile force to widen the second connection portion 230 so that the first connection portions 212 and 222 are connected to the first link member 142 and / The pivoting bracket 130 is pushed in one direction.

6 by the tensile force of the first and second connection portions 212 and 222 of the torsion spring 200 and the first connection portions 212 and 222 as shown in FIG. A moment is applied in the direction of the load.

In other words, the hinge 132 is formed at a right angle to the virtual line 500 connecting the first connection portions 212 and 222 of the torsion spring 200 and the second connection portion 230, A moment acts in a direction in which the virtual line 500 is located.

Accordingly, even if the tension of the connecting cable 160 and the cables for the wheels is not tightly adjusted, generation of clearances of the pivotal bracket 130 relative to the fixed bracket 140 is suppressed, so that vibration and noise caused by running the vehicle can be prevented .

In this state, when the driver pulls the parking brake lever 110 for a certain interval as shown in FIG. 7 for parking the vehicle, the turning bracket 130 is moved from the hinge 132 to the stationary bracket 140 The first link member 142 connected to the first connection portions 212 and 222 of the torsion spring 200 is also rotated by a certain angle in cooperation with the rotation bracket 130 so that the torsion spring 200 The distance between the first connection portions 212 and 222 of the second connection portion 230 and the second connection portion 230 can be further narrowed.

That is, when a force of a predetermined magnitude or more is applied to the torsion spring 200 due to the load applied by the compression force from the entire stroke from the stroke of the parking brake lever 110 to the partial stroke, The parking brake lever 110 is rotated.

Here, the interval of the torsion spring 200 to which the load due to the compressive force is applied is set so that the interval between the first connection portions 212 and 222 and the second connection portion 230 is maximally narrowed State.

7, a hinge 232 is located on a virtual line 500 connecting the first and second connection portions 212 and 222 of the torsion spring 200 to the torsion spring 200, 130 and the hinge 132 are absent.

That is, since the hinge 232 is disposed on the virtual line 500 connecting the first connection portions 212 and 222 of the torsion spring 200 and the second connection portion 230, the first connection portions 212 and 222 are connected to the second connection portion The virtual line 500 and the hinge 132 have a linear distance D at regular intervals in a state in which the virtual line 500 and the hinge 132 are orthogonal to each other when the load, which is a tensile force to be widened from the hinge 132, So that no moment is generated in both directions of the hinge 132, and this point becomes an inflection point.

When the driver further pulls the parking brake lever 110 past the inflection point of the torsion spring 200, the turning bracket 130 and the first link member 142, as shown in Figs. 8 and 9, The first connection portions 212 and 222 are rotated together with the first link member 142 so that the gap between the first connection portions 212 and 222 and the second connection portion 230 is widened.

Therefore, when the gap between the first connection portions 212 and 222 is increased with respect to the second connection portion 230 of the torsion spring 200 as the parking brake lever 110 is pulled, the torsion spring 200 is elastically restored A tractive force by the tensile force of the torsion portions 210 and 220 is generated so that the driver can pull the parking brake lever 110 with a smaller force from the point of time when the torsion spring 200 has passed the inflection point of the torsion spring 200 .

8 and 9, a virtual line 500 connecting the first connection portions 212 and 222 of the torsion spring 200 and the second connection portion 230 passes through the hinge 230 and the hinge 230 A moment acts in the rotating direction of the rotating bracket 130 and the hinge 132 by the tensile force from the time when the parking brake lever 110 is positioned below the virtual line 500. As a result, Can be easily pulled.

In other words, the hinge 132 is formed at a right angle to the virtual line 500 connecting the first connection portions 212 and 222 of the torsion spring 200 and the second connection portion 230, The moment acts on the hinge 132 in a direction in which the virtual line 500 is positioned.

9, when the parking brake lever 110 is fully retracted, that is, when the parking brake is filled, the first and second connecting portions 212 and 222 and the second connecting portion 230 of the torsion spring 200 are not subjected to tensile force And can be disposed at a position where the gap is opened.

In this case, the hinge 132 is located on the lower side with respect to the virtual line 500 connecting the first connection portions 212 and 222 and the second connection portion 230.

In this state, when the driver depresses the parking brake lever 1100 by a predetermined interval as shown in Figs. 8 and 7 to release the parking state of the vehicle, the turning bracket 130 is rotated relative to the fixed bracket 140 by the hinge The first link member 142 connected to the first connection portions 212 and 222 of the torsion spring 200 is also rotated by a predetermined angle in conjunction with the rotation bracket 130 The distance between the first connection portions 212 and 222 of the torsion spring 200 and the second connection portion 230 can be narrowed.

That is, when a force exceeding a predetermined magnitude is applied to the torsion spring 200 due to the load applied by the compression force, the parking brake lever 110 is rotated from the full stroke to some strokes, (110) is rotated.

Here, the interval of the torsion spring 200 to which the load due to the compressive force is applied is set so that the interval between the first connection portions 212 and 222 and the second connection portion 230 is maximally narrowed State.

Since the inflection point has been described above, a repetitive description thereof will be omitted.

6, the pivotal bracket 130 and the first link member 142 are pushed by the hinge 132 (see FIG. 6), so that the pivotal movement of the pivotal bracket 130 The first connection portions 212 and 222 are rotated together with the first link member 142 so that the gap between the first connection portions 212 and 222 and the second connection portion 230 is widened.

Therefore, when the parking brake lever 110 is depressed, the torsion spring 200 is elastically restored to the original state at the time when the first connection portions 212 and 222 are spaced apart from the second connection portion 230 of the torsion spring 200, A tractive force is generated by the tensile force of the torsion portions 210 and 220 so that the driver can press the parking brake lever 110 with less force after the point of inflection of the torsion spring 200 .

6, a virtual line 500 connecting the first connection portions 212 and 222 of the torsion spring 200 and the second connection portion 230 passes through the hinge 230 so that the hinge 230 contacts the virtual line A moment is applied to the rotating bracket 130 and the hinge 132 in a rotating direction by a tensile force from the time when the parking brake lever 110 is positioned on the upper side of the parking brake lever 500, It will be able to press.

As described above, according to the parking brake apparatus for a vehicle according to the embodiment of the present invention, when the parking brake lever 110 is pulled or pressed, a feeling of weight is given as a load is applied to the inflection point, The sensibility quality can be greatly improved as the assist force is generated from the point past the point.

10 is a graph showing changes in load of an elastic member according to operation of a parking brake lever in a state in which tension of a cable for a wheel and a connection cable is not applied in a parking brake apparatus for a vehicle according to an embodiment of the present invention.

10, assuming that tension of the cable 160 and the cable for the wheel is not applied, when the driver pulls the parking brake lever 110 to the inflection point 300 of the torsion spring 200, A load greater than a predetermined magnitude acts on the torsion spring 200 due to the compressive force of the torsion spring 200. When the torsion spring 200 passes the inflection point 300 of the torsion spring 200, And it gradually decreases.

However, when the parking brake lever 110 is pulled for parking the vehicle, a large force is gradually required as the parking brake lever 110 is pulled due to the tension of the connection cable 160 and the cable for the wheel.

FIG. 11 is a graph showing changes in load of an elastic member according to operation of a parking brake lever in a state where a tensile force of a cable for a wheel and a connecting cable is applied in a parking brake apparatus for a vehicle according to an embodiment of the present invention.

Referring to FIG. 11, when the torsion spring 200 according to the present invention is not applied as in the conventional art, as shown by the solid line, as the stroke increases, as the parking brake lever 110 is pulled, .

However, when the torsion spring 200 according to the present invention is applied, as shown by a dotted line, a greater load is applied to the inflection point 300 of the torsion spring 200, It can be seen that the torsion spring 200 generates a tidal force in response to the reaction force of the torsion spring 200 due to the elastic restoring force, that is, the tensile force.

Therefore, according to the parking brake apparatus 100 for a vehicle according to the embodiment of the present invention, when the parking brake lever 110 is pulled upward for parking the vehicle, a heavy operation feeling is given up to a certain section, The parking brake lever 110 can be easily pulled to the final stroke point where the force is relatively large even in the case of a woman driver or a senior citizen having relatively weak muscular strength. .

In addition, since the emotional quality according to the operation feeling as described above is improved, the customer satisfaction can be greatly increased.

On the other hand, when the parking brake is released by pulling the parking brake lever 110 as described above, when the driver presses the parking brake lever 110 downward to release the parking brake 160, As the tension of the cable is released, the brake shoe is moved so that the lining is spaced from the drum of the wheel.

The torsion spring 200 is compressed to the inflection point 300 so that a load of a certain magnitude is applied to the inflection point 300. When the torsion spring 200 passes the inflection point 300, The assist force is generated by the elastic restoring force (tensile force), so that the parking brake can be released by pressing the parking brake lever 110 with less force.

When releasing the parking brake, tension of the connecting cable 160 and the cable for the wheel is released, so that the torsion spring 200 can be compressed with less force than when the parking brake lever 110 is pulled .

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: parking brake device 110: parking brake lever
120: Release button 130: Rotation bracket
132: Hinge 140: Fixing bracket
142: first link member 150: second link member
200: elastic member (torsion spring) 210, 220:
212, 222: first connection part 230: second connection part
300: inflection point 500: virtual line

Claims (12)

A parking brake lever which is pulled or pressed by the driver in a gripped state;
A rotating bracket rotatable in association with the parking brake lever;
A fixing bracket coupled to the pivotal bracket by a hinge and fixedly coupled to the vehicle body; And
Wherein one end of the rotation bracket is connected to the rotation bracket and the other end of the rotation bracket is connected to the fixing bracket so that when the rotation bracket rotates from the hinge to the fixing bracket, And an elastic member to which a tidal force is applied at a point in time when the vehicle is stopped. The method according to claim 1,
Wherein the elastic member is a torsion spring. The method according to claim 1,
The elastic member
A torsion portion wound in at least one row;
A first connection portion extending in one direction of the torsion portion;
And a second connection portion extending in the other direction of the torsion portion. The method of claim 3,
Wherein the torsion portion is provided in a pair so as to be respectively disposed on both surfaces of the rotation bracket,
At least one of the first connecting portion and the second connecting portion is connected to each other, and the torsion portion, the first connecting portion, and the second connecting portion are integrally formed. The method of claim 3,
One of the first connecting portion and the second connecting portion is connected to a first link member fixedly coupled to the rotating bracket and the other connecting portion is connected to a second link member fixedly coupled to the fixing bracket , Parking brake device for vehicle. The method of claim 3,
Wherein when the hinge is located on an imaginary line connecting the first connecting portion and the second connecting portion of the elastic member with the hinge being rotated relative to the fixing bracket with respect to the fixing bracket, Brake device. The method according to claim 6,
When the parking brake lever is pulled,
Wherein when the hinge is positioned below the virtual line, the elastic member generates a tidal force by an elastic restoring force. The method according to claim 6,
When the parking brake lever is depressed,
And when the hinge is positioned below the virtual line, a load due to a compressive force is applied to the elastic member. The method according to claim 6,
When the parking brake lever is pulled,
Wherein when the hinge is positioned above the imaginary line, a load due to a compressive force is applied to the elastic member. The method according to claim 6,
When the parking brake lever is depressed,
Wherein when the hinge is positioned above the virtual line, the elastic member generates a tidal force by an elastic restoring force. 10. The method of claim 9,
Wherein when the parking brake is not operated, the first connecting portion and the second connecting portion of the elastic member are spaced apart by a compressive force. The method according to claim 6,
Wherein the hinge acts on a moment in a direction in which the virtual line is located.

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