KR101021927B1 - Foot parking brake - Google Patents

Abstract

Foot parking brake device according to an embodiment of the present invention is a brake lever, the elastic member which is provided in the brake lever and provides a predetermined elastic force for locking and unlocking the parking state according to the rotation of the brake lever, And a one-touch operation unit for switching the appearance and exit in a one-touch manner by an operation, and a bridge positioned between the elastic member and the one-touch operation unit to press or release the elastic member in association with the appearance operation of the one-touch operation unit.

Parking, Brake, One Touch, Bridge, Torsion Spring

Description

Foot parking brake device {FOOT PARKING BRAKE DEVICE}

The present invention relates to a foot parking brake device, and more particularly, to a foot parking brake device that performs a locking and releasing state of a parking brake in a one-touch manner by using a pedal to maintain a stopped state of a vehicle during parking. .

In general, a brake device of a vehicle may be divided into a main brake for deceleration, which is used for temporary stopping while driving, and a parking brake, which is used for long time parking.

The parking brake serves to brake the rear wheel or the front wheel of the vehicle to maintain the parking state of the vehicle. Such parking brakes may be classified into a hand parking brake in which a driver pulls the brake lever by hand and a foot parking brake in which the driver steps on the brake pedal. In recent years, with the increasing number of luxury vehicles equipped with automatic transmissions, foot parking brake devices that allow a driver to step on a separate brake pedal have become popular.

The conventional foot parking brake device has a complicated structure because many components for locking and releasing parking are complicated, and the operation of the parking brake is inconvenient. In addition, additional components, such as a separate damper device, are needed to prevent sudden operation of the brake pedal.

The present invention has been made to solve the above-described problems, and provides a foot parking brake device that can perform the locking and unlocking state of the parking brake in a one-touch manner through a simple operation of the driver pedaling the foot. have.

Another object of the present invention is to provide a foot parking brake device having an improved structure to reduce the number of components used for locking and releasing the parking brake.

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

Foot parking brake device according to an embodiment of the present invention for achieving the above object is provided in the brake lever, the brake lever and provides a predetermined elastic force for locking and unlocking the parking state according to the rotation of the brake lever. An elastic member, a one-touch operating portion which switches on and off in a one-touch manner by the operation of the brake lever, and is positioned between the elastic member and the one-touch operating portion, and presses or releases the elastic member in conjunction with the movement of the one-touch operating portion. It includes a bridge.

Specific details of other embodiments are included in the detailed description and drawings.

According to the foot parking brake device of the present invention as described above has one or more of the following effects.

First, the driver can perform the one-touch locking and unlocking of the parking brake by a simple operation of pedaling with a foot.

Second, by operating the foot parking brake device by a simple mechanical configuration using a one-touch mechanism, the number of components used for locking and releasing the parking brake can be reduced.

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

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, a foot parking brake device according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail to avoid unnecessarily obscuring the subject matter of the present invention.

1 and 2 are exploded perspective and exploded perspective view of the foot parking brake device according to an embodiment of the present invention, Figures 3 and 4 is an exploded perspective view and a cross-sectional view of the one-touch operation shown in Figure 2, Figures 5, 6 and 7 3 is an enlarged view illustrating 'A', 'B' and 'C' portions of FIG. 3 in detail.

1 to 7, the foot parking brake apparatus according to an embodiment of the present invention is a brake lever 100, clutch member 200, elastic member 300, one-touch operation unit 400 and the bridge ( 500) and the like.

The brake lever 100 is installed on the main body 10 so as to be rotatable about a rotation shaft a, and has a pedal 110 at one end thereof. The other end of the brake lever 100 is connected to the main body 10 by a spring 120 that provides a restoring force according to rotation.

The clutch member 200 is fixed to the brake lever 100 to form a concentric circle with the rotation shaft a of the brake lever 100. The clutch member 200 may be formed in a disk shape such that the torsion spring 300, which will be described later, is wound on an outer circumferential surface thereof, and a plurality of fixing pieces 210 may be formed on the brake lever 100 to fasten and fix the bolt. The clutch member 200 preferably has a mounting groove 220 having a predetermined depth so that the torsion spring 300 is inserted into the outer circumferential surface thereof.

The elastic member 300 is provided in the clutch member 200 to provide a predetermined elastic force for locking and releasing the parking state according to the rotation of the brake lever 100. The elastic member 300 may include a torsion spring (hereinafter, referred to as '300') for generating a friction force according to the torsion in the clutch member 200. Torsion spring 300 is wound around the outer peripheral surface of the clutch member 200 is installed in a circular shape, one end is fixed to the brake lever 100 and the other end is connected to the bridge 500 to be described later.

The one-touch operation unit 400 is switched in appearance in the one-touch manner by the operation of the brake lever 100.

One-touch operation unit 400 is a cylinder 410, the first rod 420, the rotor 430, the second rod 440, the compression expansion member 450, the housing 460 and the elastic block 470, etc. Equipped.

An opening surface 411 is formed at one end of the cylinder 410 such that the first rod 420, the rotor 430, the second rod 440, and the compression expanding member 450 may be sequentially inserted therein. A hole 413 is formed at the other end so that the front end of the first rod 420 may protrude therethrough. A plurality of long grooves 415 and end grooves 416 are alternately formed in the other end inner surface of the cylinder 410, and the inclined surface 416a at an angle of approximately 45 degrees at the end between the long grooves 415 and the end grooves 416. ) Is formed.

The first rod 420 is installed in the cylinder 410 to be movable along the long groove 415 in conjunction with the operation of the brake lever 100. The first rod 420 is inserted into the long groove 415 is formed with a plurality of guide projections 421 on the side, the teeth portion 423 is formed at the end. The first rod 420 may be inserted into the through hole 471 of the elastic block 470 to be described later and may be fixed to the elastic block 470 by a fixing ring 475 coupled to the end.

The rotor 430 is provided inside the cylinder 410 and is alternately inserted into and separated from the long groove 415 and the short groove 416 while rotating as the first rod 420 moves in contact with the first rod 420. To this end, the rotor 430 is provided with a plurality of engaging projections 431 alternately inserted into and separated from the long groove 415 and the short groove 416 on the side, the first rod (at the end of the engaging projection 431 ( An inclined surface 431a is formed at an angle of about 45 degrees such that the teeth 423 of the 420 are inclinedly contacted. The inclined surface 431a of the rotor 430 preferably coincides with the inclined surface 416a of the cylinder 410.

The second rod 440 is provided inside the cylinder 410 to be movable in contact with the rotor 430, and one end thereof is connected to the bridge 500. In more detail, one end of the second rod 440 is coupled to the bridge 500 by a hinge 11 through the hole 418a of the cylinder cover 418, and the other end is gripped by the rotor 430.

The compression expansion member 450 is a coil spring (hereinafter, referred to as '450') provided between the cylinder 410 and the second rod 440 so that the second rod 440 may be elastically restored toward the rotor 430. Description). The coil spring 450 is fitted to the second rod 440, one end of which is in contact with the inside of the cylinder cover 418, and the other end of which is in contact with the disc of the second rod 440.

One end of the housing 460 is coupled to the brake lever 100 by a hinge 13, and the cylinder 410 is inserted through the open surface 461 of the other end to be slidably movable. The housing 460 is formed in a cylindrical shape and an uneven surface 463 is formed on an inner circumferential surface thereof.

The elastic block 470 is provided to move while elastically contacting the inside of the housing 460, and is connected to the first rod 420. The elastic block 470 protrudes from the outer circumferential surface of the elastic piece 473 which is in elastic contact with the unevenness 463 of the housing 460.

The bridge 500 is positioned between the torsion spring 300 and the one-touch operation unit 400, and pressurizes or releases the torsion spring 300 in conjunction with the appearance of the one-touch operation unit 400. The bridge 500 is rotatably installed at the center of the main body 10 by a hinge 15, one end of which is connected to the second rod 440 of the one-touch operating part 400, and the other end of the bridge 500 is free of the torsion spring 300. Connected to the stage.

8 and 9, the operation of the foot parking brake device according to an embodiment of the present invention will be described in detail.

8A to 8D are exemplary views sequentially illustrating an operation process for locking the parking in the foot parking brake device according to an embodiment of the present invention.

As shown in FIG. 8A, in the unparked state, the engaging protrusion 431 of the rotor 430 is inserted into and caught in the step groove 416 of the cylinder 410, and the second rod 440 is connected to the rotor 430. Releases the pressurization of the torsion spring 300 through the bridge 500 in a fixed state. As the pressure of the torsion spring 300 is released, the frictional resistance due to the torsion is removed from the clutch member 200, thereby enabling the operation of the brake lever 100.

As shown in FIG. 8B, when a force is applied to the pedal 110 to start the rotation of the brake lever 100, the housing 460, the elastic block 470, and the first operation unit may be interlocked with the operation of the brake lever 100. 1 rod 420 is moved and the elastic block 470 and the cylinder 410 is stopped in contact with the state. At this time, the tooth 423 of the first rod 420 is in contact with the locking projection 431 of the rotor 430 to push the rotor 430 out of the step groove 416, the inclined surface 431a of the locking projection 431 ), While the step groove 416 rotates along the inclined surface 416a between the long groove 415 and the short groove 416, the locking projection 431 of the rotor 430 is in a state capable of being inserted into the long groove 415. do.

As shown in FIG. 8C, when the force is continuously applied to the pedal 110, other components do not move and maintain the current state, and only the housing 460 moves by the full stroke of the pedal 110.

As shown in FIG. 8D, when the force applied to the pedal 110 is removed, the housing 460, the elastic block 470, the first rod 420, and the rotor 430 are restored by the restoring force of the coil spring 450. ) And the second rod 440 are moved in the restoration direction of the pedal 110. At this time, as the locking protrusion 431 of the rotor 430 is inserted into the long groove 415 of the cylinder 410 and moves in the restoring direction, the second rod 440 is also rotated by the coil spring 450 to the rotor 430. Will move further toward As the second rod 440 moves toward the rotor 430, the bridge 500 connected to the second rod 440 is pulled and rotated to press the free end of the torsion spring 300. As the torsion spring 300 is pressurized as described above, frictional resistance due to torsion occurs in the clutch member 200, thereby becoming a parking locked state.

9A to 9D are exemplary views sequentially illustrating an operation process for releasing parking in the foot parking brake device according to an embodiment of the present invention.

As shown in FIG. 9A, the force is applied to the pedal 110 in an additional operation in the parking lock state.

As shown in FIG. 9B, when a force is applied to the pedal 110 to start the rotation of the brake lever 100, the housing 460, the elastic block 470, and the first operation may be connected with the operation of the brake lever 100. 1 The rod 420 and the rotor 430 are moved and stopped in the state in which the elastic block 470 and the cylinder 410 are in contact. In this case, the first rod 420 pushes the rotor 430 out of the long groove 415, and the inclined surface 431a of the locking protrusion 431 of the rotor 430 leaves the long groove 415 to open the long groove 415 and the short groove. The locking projection 431 of the rotor 430 is in a state that can be inserted into the step groove 416 while rotating along the inclined surface 416a between the 416. As the second rod 440 is moved by the rotor 430, the bridge 500 connected to the second rod 440 is pushed and rotated to release the free end of the torsion spring 300.

As shown in FIG. 9C, when the force applied to the pedal 110 is removed, the housing 460, the elastic block 470, the first rod 420, and the rotor 430 are restored by the restoring force of the coil spring 450. ) Moves in the restoring direction of the pedal 110. At this time, since the engaging protrusion 431 of the rotor 430 is inserted into the end groove 416 of the cylinder 410 and caught, the second rod 440 does not move. Since the second rod 440 does not move, the bridge 500 connected to the second rod 440 is fixed, and the torsion spring 300 is opened. As the pressure applied to the torsion spring 300 is released as described above, the frictional resistance due to the torsion is removed from the clutch member 200, thereby enabling the operation of the brake lever 100.

As shown in FIG. 9D, only the housing 460 is returned to its original position by the restoring force, and the initial parking state is released.

That is, according to the foot parking brake apparatus of the present invention, the driver can perform the locking and releasing state of the parking brake in a one-touch manner through a simple operation of stepping on the pedal 110 by foot. In addition, by operating the foot parking brake device by a simple mechanical configuration using a one-touch mechanism, the number of components used for locking and releasing the parking brake can be reduced.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. 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 shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

1 is a combined perspective view of a foot parking brake device according to an embodiment of the present invention.

Figure 2 is an exploded perspective view of the foot parking brake device according to an embodiment of the present invention.

3 is an exploded perspective view of the one-touch operation unit shown in FIG.

4 is a cross-sectional view of the one-touch operation unit shown in FIG.

5 is an enlarged view showing detail 'A' of FIG.

FIG. 6 is an enlarged view showing detail 'B' of FIG. 3.

FIG. 7 is an enlarged view illustrating 'C' part of FIG. 3 in detail.

8A to 8D are exemplary views sequentially illustrating an operation process for parking locking in the foot parking brake device according to the embodiment of the present invention.

9A to 9D are exemplary views sequentially illustrating an operation process for releasing parking in the foot parking brake apparatus according to an embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100: brake lever 110: pedal

200: clutch member 300: elastic member (torsion spring)

400: one-touch operating part 410: cylinder

415: long groove 416: single groove

420: first load 421: guide protrusion

423: tooth part 430: rotor

431: protrusion 440: the second rod

450: compression expansion member (coil spring) 460: housing

470: elastic block 500: bridge

Claims (7)

Brake lever 100; An elastic member provided in the brake lever 100 and providing a predetermined elastic force for locking and releasing a parking state according to rotation of the brake lever 100; A one-touch operation unit 400 which is switched in and out of the one-touch manner by the operation of the brake lever 100; And Located between the elastic member 300 and the one-touch operation unit 400, including a bridge 500 for pressing or releasing the elastic member 300 in conjunction with the appearance operation of the one-touch operation unit 400, , The elastic member 300, Is wound around the clutch member 200 fixed to the brake lever 100 is installed, one end is fixed to the brake lever 100 and the other end is connected to the bridge 500, The one-touch operation unit 400, A cylinder 410 in which a plurality of long grooves 415 and end grooves 416 are alternately formed in the longitudinal direction; A first rod 420 installed to move along the long groove 415 in association with an operation of the brake lever 100; A rotor 430 provided inside the cylinder 410 and alternately inserted into and separated from the long groove 415 and the short groove 416 while rotating as the first rod 420 moves in contact with the first rod 420; A second rod 440 provided inside the cylinder 410 to be movable in contact with the rotor 430 and having one end connected to the bridge 500; And It includes a compression expansion member 450 provided between the cylinder 410 and the second rod 440, The bridge 500, One end is connected to the second rod (440) of the one-touch operation unit 400, the other end is connected to the free end of the elastic member (300), foot parking brake device. The method of claim 1, The elastic member 300 includes a torsion spring for generating a friction force according to the torsion, foot parking brake device. delete The method of claim 1, The cylinder 410 foot parking brake device is formed with an inclined surface at the end between the long groove (415) and the short groove (416). The method of claim 4, wherein The first rod 420 is a foot parking brake device is inserted into the long groove 415 is formed with a plurality of guide projections (421) on the side, the teeth portion 423 is formed at the end. The method of claim 5, The rotor 430 is provided with a plurality of engaging projections 431 alternately inserted into and separated from the long groove 415 and the short groove 416 on the side, the teeth portion at the end of the engaging projection 431 An inclined surface is formed to be in inclined contact with the (423), the inclined surface of the rotor 430 is a foot parking brake device corresponding to the inclined surface of the cylinder (410). The method of claim 1, A housing 460 connected to the brake lever 100 and having a cylinder 410 inserted therein to be movable and having irregularities formed on an inner circumferential surface thereof; And An elastic piece protrudes from an outer circumferential surface thereof, and further includes an elastic block 470 connected to the first rod 420 to move the elastic piece and the elastic piece in elastic contact with the inside of the housing 460. ,  The first rod 420 is a foot parking brake device is fixed to the elastic block 470 by a fixing ring inserted into the through-hole of the elastic block 470 and coupled to the end.

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