KR101081240B1 - interlocking instrument of foot operating type parking brake pedal and main brake pedal - Google Patents

Abstract

The present invention relates to a linkage mechanism between the parking brake pedal and the main brake pedal, and the braking force required for parking through the disc brakes provided on the front wheel and the rear wheel is interlocked during the operation of the parking brake pedal 30. By being generated, it is possible to reduce the weight of the vehicle and to reduce the manufacturing cost, and to improve the stability at the time of parking the ramp through the increased braking force.

Description

Interlocking instrument of foot operating type parking brake pedal and main brake pedal

1 to 3 is a schematic configuration diagram for explaining a conventional foot type parking brake structure,

Figure 4 is a perspective view for explaining the interlocking mechanism of the parking brake pedal and the main brake pedal according to the present invention,

Figure 5 is a perspective view for showing the coupling portion of the parking brake pedal in Figure 4,

6 is a front view for explaining a connection rod in the linkage mechanism according to the present invention,

7 is a perspective view for explaining the rotary gear member and the rotary gear member control means in the interlock mechanism according to the present invention;

8 and 9 are perspective views for explaining the operating state of the interlock mechanism according to the present invention.

<Description of Symbols for Main Parts of Drawings>

21-Parking brake pedal mounting bracket 22-Main brake pedal mounting bracket

23-Pinion Gear Torsion Springs 24-Release Lever Return Springs

25-release cable 26-release lever

27-pedal return spring 28-rack gear

29-Plate 30-Parking Brake Pedal                 

40-connecting rod 41-termination

41a, 41b, 41c-Coupling Groove 43-Tip Coupling

45-intermediate connection 45a-coupling groove

45b-Connecting rod gear groove 50-Main brake pedal

51-Brake pedal torsion spring 60-Cam bracket member

61a-Bracket Gear Groove 70-Rotary Gear Member

71a-End Gear Groove 71b-End Gear Groove

71c-Guide groove 71d-Breakaway jaw

80-Rotary gear member control means 81-Rotary gear member coil spring

81a-Release prevention protrusion 83-Coil spring support bracket

83a-Guide hole 85-Coil spring support rod

85a-support protrusion

The present invention relates to an interlocking mechanism of the parking brake pedal and the main brake pedal, and in particular, the main brake pedal is interlocked during the operation of the parking brake pedal to simultaneously generate the parking braking force on the front wheel and the rear wheel using the braking force by the disc brake. The interlocking mechanism of the parking brake pedal and the main brake pedal.

In general, a brake device applied to a vehicle is roughly divided into a main brake used for a temporary stop or sudden stop while driving the vehicle, and a parking brake used to end the driving of the vehicle and park it in a predetermined parking space. In the case of the conventional parking brake, the brake is applied to the rear wheels by the driver manually operating the hand brake lever installed between the driver's seat and the passenger's seat so that the parking brake operation can be performed.

On the other hand, in recent years, in order to improve the convenience of the driver, a new type of foot brake parking pedal can be applied instead of the hand brake lever so that the parking brake can be operated according to the driver's foot and a separate brake is released for the parking brake. By providing the release knob around the driver's seat, it is possible to make the operation of the brake for parking and the operation of release easier.

The general structure of such a foot-type parking brake is described in detail in registration No. 10-0350013, registered August 12, 2002, which will be briefly described as shown in Figs.

That is, while the damper 1 and the pedal return spring 2 are connected and installed, the parking brake pedal on which one side of the plate 3 is connected is connected to the parking brake cable 4 and the rack gear 6 is formed. 7), the pinion gear (not shown) engaged with the rack gear (6), and the torso body integrally formed from the pinion gear is tightened, one end of which is fixed to the parking brake pedal mounting bracket (8) of the pinion gear Torsion spring (9) to prevent reverse rotation, and the support shaft (11) of the other end is installed on the same rotary shaft as the pinion gear, and the other end of the torsion spring (9) and the release handle (not shown) and the release cable The release lever 13 is connected via (12).

Here, the release lever 13 is installed above the pinion gear, and thus the pinion gear is not shown in the drawing because it is covered by the release lever 13.

In addition, a release lever return spring 14 is connected to the release lever 13, and the release lever 13 has a property to always rotate clockwise in the illustrated state. To have.

Therefore, when the driver presses the parking brake pedal 7 for the operation of the parking brake, the parking brake pedal 7 rotates toward the front of the vehicle body as shown by arrow A shown in FIG. The parking brake cable 4 connected to 5) is pulled as shown by arrow B shown.

At this time, the pinion gear meshed with the rack gear 6 of the plate 3 rotates counterclockwise according to the clockwise rotation of the parking brake pedal 7, and the pinion gear rotated counterclockwise is the torsion spring. Rotation in the reverse direction is prevented by (9). Accordingly, even when the driver releases the parking brake pedal 7 that the driver has stepped on, the parking brake pedal 7 is not returned, thereby preventing the parking brake from operating. Will be done.

When the driver pulls the release knob for releasing the parking brake, the release cable 12 connected to the release handle is also pulled in the direction of arrow C of FIG. 3, which is the same direction, and thus the release cable 12. The release lever 13 is connected to rotate in the counterclockwise direction in the state shown in FIG.

On the other hand, when the release lever 13 is rotated in the counterclockwise direction, the support piece 11 provided on the release lever 13 has the other end of the torsion spring 9 fixed to the parking brake pedal mounting bracket 8. It is pushed open, and at the same time, the reverse rotation (clockwise rotation) of the pinion gear is freely performed.

As such, when the reverse rotation of the pinion gear becomes free, the parking brake pedal 7 is returned while rotating counterclockwise as shown by the arrow D shown in FIG. 3 by the elastic restoring force of the pedal return spring 2, At the same time, the parking brake is released, ready for the next operation.

However, the above-described foot-type parking brake is required when parking through the frictional heat generated at this time by closely contacting the lining to the inner peripheral surface of the brake drum provided on the rear wheel while the parking brake cable 4 is pulled when the parking brake pedal 7 is operated. Since the structure generates the braking force, a plurality of cable mounting brackets are required to fix the parking brake cable 4, thereby increasing the weight of the vehicle and increasing the manufacturing cost.

In addition, since the conventional foot type parking brake has a structure in which a braking force is generated only in the rear wheel, there is a problem that a safety accident occurs when the braking force becomes weaker than the inertial force of the vehicle during parking on the slope.

Accordingly, the present invention has been made in order to solve the above problems, by configuring the main brake pedal to work together when the parking brake pedal is operated so as to generate the necessary braking force during parking using the disc brake provided on the front wheel and the rear wheel. The interlocking of the parking brake pedal and the main brake pedal to reduce the weight of the vehicle and reduce the manufacturing cost by eliminating the parking brake cable, and to significantly improve the stability of parking on the slope through the increased braking force. The purpose is to provide a mechanism.

The interlock mechanism of the present invention for achieving the above object, the parking brake pedal mounting bracket so as to enable elastic rotation and the parking brake pedal; One end coupling portion that is rotatably coupled to the parking brake pedal mounting bracket, the other end of the coupling coupled to the main brake pedal mounting bracket rotatably, the intermediate coupling portion connecting the end coupling portion and the termination coupling With one connecting rod; A main brake pedal integrally coupled to the termination coupling portion of the connecting rod; While installed in the form of penetrating through the tip coupling portion is rotatable about the tip coupling portion and at the same time is installed so as to be movable along the longitudinal direction of the tip coupling portion and coupled to the connecting rod when combined with the intermediate connecting portion A rotary gear member; A cam bracket member integrally coupled to the parking brake pedal and installed to contact the rotary gear member to move the rotary gear member toward an intermediate connection portion of the connecting rod when the parking brake pedal rotates toward the front of the vehicle. Characterized in that configured to include.

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in detail with reference to the accompanying drawings.

Figure 4 is a perspective view for explaining the interlocking mechanism of the parking brake pedal and the main brake pedal according to the present invention, will be described with the same reference numerals to the same parts as the conventional structure.

According to the present invention, the main brake pedal is operated in association with the foot brake parking pedal in a vehicle equipped with the foot parking parking pedal, so that the parking brake force of the vehicle uses the disc brake provided at the front wheel and the rear wheel. In order to be generated.

4 and 5, the parking brake pedal mounting bracket 21 and the main brake pedal which are spaced apart from each other and fixed to the vehicle body (dash panel) side of the driver's lower space as shown in FIGS. A pinion gear torsion spring 23 for preventing reverse rotation of a pinion gear rotatably installed on a mounting bracket 22 and the parking brake pedal mounting bracket 21 via a hinge shaft, and rotating on the same rotation shaft as the pinion gear. While being installed as possible, one end is connected to the release lever return spring (24) coupled to the parking brake pedal mounting bracket (21), and the other end is a release lever (26) connected to the release cable (25), and the parking brake pedal mounting bracket The rack gear to be engaged with the pinion gear while being installed to enable elastic rotation via the hinge shaft and the pedal return spring (27) (21) ( A parking brake pedal 30 having a plate 29 having a plate formed therein 28 and one end thereof are rotatably installed on the side of the vehicle body so that the parking brake pedal 30 does not interfere with the parking brake pedal 30, and the other end thereof is the main brake pedal mounting bracket 22. ) Is connected to the connecting rod 40 so as to be rotatable and the brake pedal torsion spring 51 coupled to the main brake pedal mounting bracket 22 so as to enable elastic rotation to the connecting rod 40. Rotation of the parking brake pedal 30 while being integrally coupled to the main brake pedal 50 and the plate brake 29 of the parking brake pedal 30 to generate a braking force to the disc brake provided on the front and rear wheels Cam bracket member 60 which is moved along the lower circumferential surface of the connecting rod 40 so as not to interfere with the connecting rod 40 and rotatably coupled to the connecting rod 40 and the parking brake When the moon 30 rotates, the rotary gear member selectively transmits the rotational force of the parking brake pedal 30 toward the connecting rod 40 while simultaneously rotating and linearly moving by contact with the cam bracket member 60. 70) and one end is coupled to the rotary gear member 70 and the other end is interfered with the parking brake pedal 30 so that the rotary gear member 70 can perform elastic rotation and linear motion. It consists of a rotary gear member control means 80 that is fixed to the parking brake pedal mounting bracket (21) so that.

4 to 6, the main brake pedal mounting bracket 22, the brake pedal torsion spring 51, and the main brake pedal 50 are sequentially inserted in the connection rod 40. The coupling grooves 41a, 41b, and 41c are formed on the outer circumferential surface thereof, so that the end coupling parts 41 are rotatably coupled to the main brake pedal mounting bracket 22 and the parking brake pedal 30. The end coupling portion 43 is rotatably installed at the vehicle body side and the front coupling portion 43 to which the rotary gear member 70 is coupled, and the terminal coupling portion 41 and the tip coupling portion 43 are connected in a straight line. (41) and the intermediate connecting portion 45 is formed to have a larger diameter than the tip coupling portion 43.

On the other hand, a coupling groove 45a is formed on one surface of the intermediate connector 45 connected to the front coupling portion 43 so that the tip of the rotary gear member 70 can be inserted therein, and the coupling groove 45a is provided. Spline-shaped connecting rod gear groove 45b is formed along the longitudinal direction of the intermediate connecting portion 45 of the inner circumferential surface thereof.

4 and 5, the cam bracket member 60 has a plate 29 of the parking brake pedal 30 so as to be located above the distal end coupling portion 43 of the connecting rod 40. While being coupled to the parking brake pedal 30 is rotated so as to have a curvature of the convex shape toward the driver's seat so as not to interfere with the connecting rod 40, the length of the connecting rod 40 The width D toward the direction is formed such that the upper end toward the upper side of the vehicle body is gradually wider than the lower end toward the front end engaging portion 43, and has one surface facing the middle connecting portion 45 of the connecting rod 40. There is formed a bracket gear groove 61a selectively engaged with the rotary gear member 70 to transmit the rotational force of the parking brake pedal 30 to the rotary gear member 70.

In addition, the rotary gear member 70 is rotatably fitted to the front coupling portion 43 of the connecting rod 40, as shown in Figure 7 and the intermediate connecting portion 45 of the connecting rod 40 It is installed to be present between the cam bracket member 60.

Here, the front end of the rotary gear member 70 toward the intermediate connecting portion 45 is formed to have a diameter that can be inserted into the coupling groove (45a), the outer peripheral surface selectively spline coupling with the connecting rod gear groove (45b) The tip gear groove 71a is formed.

In addition, the end face of the rotating gear member 70 facing the parking brake pedal mounting bracket 21 is selectively fitted to the bracket gear groove 61a of the cam bracket member 60 according to the rotation amount of the parking brake pedal 30. End gear groove 71b which is engaged with the guide groove, and the guide groove into which one end of the rotary gear member control means 80 is fitted so that the rotary gear member 70 can perform elastic rotation and elastic linear motion in parallel. 71c is formed along the circumferential direction.

And, as shown in Figures 5 and 7, the rotary gear member control means 80, one end of the parking brake pedal mounting bracket 21 so that there is no interference with the plate 29 of the parking brake pedal 30 Fixed to the other end of the rotary gear member coil spring 81 which is inserted into the guide groove 71c of the rotary gear member 70 so as not to be separated; Located on the upper side of the rotary gear member coil spring 81, one end is fixed to the parking brake pedal mounting bracket 21 so as not to interfere with the plate 29 of the parking brake pedal 30, the other end is the rotary gear A coil spring support bracket 83 having a guide hole 83a formed along the longitudinal direction thereof while being installed to protrude toward the member 70; The tip of the rotary gear member is formed integrally with the coil spring 81 and the tip thereof is disposed to penetrate the guide hole 83a, and the tip of the guide hole 83a passes through the guide hole 83a in an orthogonal direction. And a coil spring support rod 85 formed integrally with the supporting protrusion 85a to be prevented from being separated from the guide hole 83a.

On the other hand, at the tip of the rotary gear member coil spring 81 inserted into the guide groove 71c of the rotary gear member 70, a separation prevention protrusion 81a having an expanded diameter is integrally formed, and the guide groove ( At the inlet of 71c, a separation preventing jaw 71d is formed to restrict the separation preventing protrusion 81a.

Hereinafter, the operation and effects of the embodiment according to the present invention will be described in detail with reference to FIGS. 8 and 9.

First, when the driver presses the parking brake pedal 30 for the operation of the parking brake, the parking brake pedal 30 rotates in the counterclockwise direction of the arrow M1 in the dotted line shown in FIG. Will be placed in a state.

At this time, the pinion gear meshed with the rack gear 28 of the plate 29 rotates in a clockwise direction opposite to the rack gear 28.                     

Meanwhile, when the parking brake pedal 30 rotates in a dotted line, the bracket bracket groove 61a formed on one surface of the cam bracket member 60 rotates in the same direction, and the terminal formed on the rotary gear member 70. It is meshed with the gear groove 71b.

In addition, when the parking brake pedal 30 continues to rotate in the solid direction in a state where the cam bracket member 60 and the rotary gear member 70 are engaged with each other, the rotary gear member 70 has a front coupling portion 43. Rotation in the counterclockwise direction of the arrow R shown in the center, and is pushed by the rotary gear member 70 and the right side with the intermediate connecting portion 45 along the longitudinal direction of the tip coupling portion 43 By moving to, the front end gear groove (71a) and the connecting rod gear groove (45b) is made in the spline form with each other.

At this time, the rotary gear member coil spring 81 is elastically increased in length as the rotary gear member 70 moves to the right along the longitudinal direction of the distal end portion 43.

In addition, the cam bracket member 60 and the rotary gear member 70 is engaged with each other, and the rotary gear member 70 and the intermediate connecting portion 45 of the connecting rod 40 are engaged with the When the parking brake pedal 30 continues to rotate in the solid line direction, the connecting rod 40 rotates in the counterclockwise direction of the arrow R as a whole, and receives the rotational force of the connecting rod 40. The main brake pedal 50 is also rotated in the counterclockwise direction of the arrow M2 shown to compress the brake pedal torsion spring 51 to be positioned in a solid line state.

In this case, the main brake pedal 50 rotated to the position of the solid line maintains the same operating state as a state in which a response is applied by the driver.

On the other hand, in the state in which the parking brake pedal 30 and the main brake pedal 50 are rotated in the solid line shown, the pinion gear rotated clockwise in conjunction with the rack gear 28 is the pinion gear torsion spring 23. As a result, the parking brake pedal 30 and the main brake pedal 50 are returned to their original positions even when the driver releases the parking brake pedal 30 that the driver has stepped on. Natural return will not occur.

As such, when the main brake pedal 50 is operated together with the operation of the parking brake pedal 30, hydraulic pressure is generated through the brake booster, and thus the disc brakes provided at the front wheel and the rear wheel operate. Therefore, the vehicle can maintain the parking state by the parking braking force of the disc brake generated from the front wheel and the rear wheel.

Then, when the driver pulls the release knob to release the parking braking force, the release cable 25 (arrow direction shown in FIG. 4) connected to the release knob is also pulled in the same direction, and the release lever received the force thereof. (26) of the support piece (not shown) is opened by pushing the free end of the torsion spring (23), which causes the pinion gear to be released by the pinion gear torsion spring (23) to release the release lever (26). Rotation in the reverse direction (rotation in the counterclockwise direction in the state shown in Fig. 9) is smoothly made.

Accordingly, the main brake pedal 50 which has been rotated counterclockwise of the arrow M2 shown for the generation of the parking braking force is clockwise of the arrow M2 shown in FIG. 9 by the elastic restoring force of the brake pedal torsion spring 51. Rotate to return to the original position of the solid line.

In addition, the connecting rod 40 is interlocked with the return of the main brake pedal 50 and rotated in the opposite direction to the above-described rotation, that is, clockwise of the arrow R shown in FIG. 9 and returned to the initial state.

In addition, the parking brake pedal 30 rotated counterclockwise of the arrow M1 shown for the generation of the parking braking force is released by the restoring force of the pedal return spring 27 as the restrained state of the rack gear 28 is released. While rotating in the clockwise direction of the arrow M1 shown in the to be returned to the original position of the solid line.

At this time, the rotary gear member 70, which is pushed and moved in the right direction with the intermediate connecting portion 45 along the longitudinal direction of the tip coupling portion 43 by the cam bracket member 60, is the parking brake pedal 30. As the restraint by the cam bracket member 60 is released upon the return of C), it moves to the left side along the longitudinal direction of the front coupling part 43 again by the elastic restoring force of the rotary gear member coil spring 81 to its original position. Will be returned.

Therefore, the parking braking force of the disc brake generated in the front wheel and the rear wheel is naturally released by the return of the main brake pedal 50 and the parking brake pedal 30.

On the other hand, when the driver does not operate the parking brake pedal 30 to decelerate while driving the vehicle, and operates only the main brake pedal 50, only the main brake pedal 50 and the connecting rod 40 brake pedal torsion spring ( By being rotated by the elastic force of 51, the operating force of the main brake pedal 50 is not transmitted to the parking brake pedal 30 through the connecting rod 40, but the operating force of the main brake pedal 50 Is transmitted only to the brake booster to reduce the speed of the vehicle.

In the above-described embodiment of the present invention, since the parking brake cable which is commonly used in the structure of the foot type parking brake can be deleted, the weight of the vehicle and the manufacturing cost can be reduced.

In addition, the present invention generates the necessary braking force during parking by using the disc brakes provided on the front wheel and the rear wheel, the existing drum brake provided on the rear wheel can be selectively deleted, which reduces the weight of the vehicle and the production cost This is a big help in savings.

In addition, the present invention can generate a parking braking force on both the front wheel and the rear wheel by using the disc brake, the vehicle can exhibit an increased parking braking force than before, thereby allowing more stable parking even on the slope parking. Will be.

As described above, according to the present invention, when the parking brake pedal is operated, the braking force necessary for parking is generated by the disc brakes provided at the front wheel and the rear wheel while the main brake pedal is interlocked, thereby reducing the weight of the vehicle and reducing the manufacturing cost. Of course, the increased braking force also significantly improves the stability of the parking in the ramp.

Claims (6)

A parking brake pedal 30 installed on the parking brake pedal mounting bracket 21 to allow elastic rotation; One end of the end coupling portion 43 rotatably coupled to the parking brake pedal mounting bracket 21, the other end of the end coupling portion 41 rotatably coupled to the main brake pedal mounting bracket 22, the front end coupling A connecting rod (40) having an intermediate connecting portion (45) for connecting the portion (43) and the termination coupling portion (41); A main brake pedal 50 which is integrally coupled to the termination coupling portion 41 of the connection rod 40; The intermediate coupling part 43 is rotatably installed around the tip coupling part 43 and installed to be movable along the longitudinal direction of the tip coupling part 43. A rotary gear member 70 which rotates integrally with the connecting rod 40 when coupled with 45; The rotary brake member 70 is integrally coupled to the parking brake pedal 30 and installed to contact the rotary gear member 70 so that the parking brake pedal 30 rotates toward the front of the vehicle. Cam bracket member 60 to move toward the intermediate connecting portion 45 of the connecting rod 40 Interlocking mechanism of the parking brake pedal and the main brake pedal comprising a. The coupling grooves 41a and 41c in which the main brake pedal mounting brackets 22 and the main brake pedal 50 are fitted to the outer circumferential surface of the termination coupling portion 41 in the connection rod 40. Is formed; The intermediate connecting portion (45) in the connecting rod (40) is formed to have a larger diameter than the termination coupling portion (41) and the leading coupling portion (43); A coupling groove 45a is formed at one surface of the intermediate connector 45 connected to the front coupling portion 43 so that the tip of the rotary gear member 70 can be inserted therein; Spline-shaped connecting rod gear groove 45b is formed along the longitudinal direction of the intermediate connecting portion 45 on the inner circumferential surface of the coupling groove 45a. The interlocking mechanism of the parking brake pedal and the main brake pedal, characterized in that. The method of claim 2, wherein the cam bracket member 60 is It is formed in the shape of an arc so that interference with the front coupling portion 43 does not occur when the parking brake pedal 30 rotates; Width D along the longitudinal direction of the connecting rod 40 is formed to increase gradually from the front end toward the other end of the rear; A bracket gear groove selectively engaged with the rotary gear member 70 to transmit the rotational force of the parking brake pedal 30 to the rotary gear member 70 on one side facing the rotary gear member 70. 61a) formed The interlock mechanism of the parking brake pedal and the main brake pedal. The method of claim 3, wherein the rotary gear member 70 It is installed to be located between the intermediate connecting portion 45 of the connecting rod 40 and the cam bracket member (60); The front end toward the intermediate connecting portion (45) is formed to have a diameter that can be inserted into the coupling groove (45a) is formed on the outer circumferential surface is a front end gear groove (71a) to be selectively splined with the connecting rod gear groove (45b); On the rear surface facing the cam bracket member 60, the end gear groove 71b which is engaged with the bracket gear groove 61a of the cam bracket member 60 according to the rotation amount of the parking brake pedal 30 is formed. The interlock mechanism of the parking brake pedal and the main brake pedal. 5. The rotary gear member 70 of claim 4, wherein the rotary gear member 70 moves in the opposite direction when the rotary gear member 70 moves toward the intermediate connecting portion 45 of the connecting rod 40. It further comprises a rotary gear member control means 80 for providing an elastic force; The rotary gear member control means 80 is rotated and installed so that one end is fixed to the parking brake pedal mounting bracket 21 and the other end is inserted into the guide groove 71c formed in the rotary gear member 70 so as not to be separated. A gear member coil spring 81; Located at the upper side of the rotary gear member coil spring 81, one end is fixed to the parking brake pedal mounting bracket 21 and the other end is installed to protrude toward the rotary gear member 70 while the guide hole along the longitudinal direction ( A coil spring support bracket 83 formed with 83a); A coil spring support rod (85) formed to be integrally connected to the rotary gear member coil spring (81) and installed to pass through the guide hole (83a); At the distal end of the coil spring support rod 85 penetrating the guide hole 83a, support protrusions 85a are integrally formed to prevent separation from the guide holes 83a. The interlock mechanism of the parking brake pedal and the main brake pedal. The method according to claim 5, wherein the guide groove (71c) is formed along the circumferential direction at the rear of the cam bracket member (60) in which the end gear groove (71b) is formed; A separation prevention protrusion 81a having an expanded diameter is integrally formed at the tip of the rotary gear member coil spring 81 inserted into the guide groove 71c; The inlet of the guide groove (71c) is formed integrally with the separation preventing jaw (71d) restraining the separation preventing projection (81a) The interlocking mechanism of the parking brake pedal and the main brake pedal, characterized in that.

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