KR101220352B1 - Structure of parking brake for vehicle - Google Patents

Abstract

Disclosed is a structure of a vehicle parking brake. The disclosed vehicle parking brake structure is operated by a driver's hand after the vehicle is stopped, and has a spherical mounting groove formed in a spherical upper surface in the structure of the parking brake installed in the vehicle to maintain the stopped state of the vehicle. A base; A housing having a spherical shape and installed in the mounting groove and having a hollow part formed of an empty space; A handle member protruding from the outside of the housing to be operated by a driver's hand; A bolt member installed vertically in the housing, a length variable member installed on the bolt member and having a piezoelectric element therein, the length of which is variable, and a first stator installed on the bolt member under the length variable member. An actuator provided; A switch installed at an end of the handle member to operate the actuator; A fixing member having a second stator connected to the first stator at an upper end thereof and connected to the bolt member and having a lower end fixed to the base; And a parking cable having one end fixed to one side of the housing.

Parking brake, piezoelectric element, parking cable

Description

Structure of parking brake for vehicle {STRUCTURE OF PARKING BRAKE FOR VEHICLE}

1 is a view schematically showing the configuration of a vehicle parking brake according to the prior art.

Figure 2 is an external perspective view schematically showing the external configuration of the structure of the vehicle parking brake according to the present invention.

3 is an exploded view of FIG. 2;

4 is a half cross section through the housing of FIG.

5 is an exploded perspective view of the main portion of FIG. 4;

6 is an external view of the housing of FIG. 2;

7 is a half sectional view of the housing of FIG. 2;

8A and 8B are operation explanatory diagrams shown for explaining the operation of the structure of the vehicle parking brake according to the present invention;

<Description of the symbols for the main parts of the drawings>

31.Base

32. Housing

33. Handle member

34. Bolt member

35. Length variable member

36. The first stator

300. Actuator

41. Switch

42a. 2nd stator

42. Fixing member

43. Parking cable

44. Nut member

45. Bearing

46. Cover member

The present invention relates to a structure of a vehicular parking brake, and more particularly, to a structure of a vehicular parking brake improved in such a way that the structure is simple and no interference with other components occurs.

As is well known, a brake device in a vehicle is roughly classified into a main brake, which is mainly used for decelerating or stopping the vehicle while driving, and a parking brake for stopping the vehicle and maintaining the stopped state. . Among these, the main brake is also referred to as a foot brake because the driver mainly operates by foot, and the parking brake is also called a hand brake because the driver operates by hand.

Such brake devices are mechanical and hydraulic. Foot brakes are generally hydraulic, and parking brakes are generally mechanical using wires and the like.

Among the parking brakes, as shown in FIG. 1, when the cam 18 connected to the parking lever 10 is rotated by the rotation of the parking lever 10, a cable rod connected thereto is provided. 20 and an equalizer 24 connected to the cable rod 20 are pulled.

As a result, the brake cable 22 connected to the equalizer 24 is pulled so that the brake shoe of the brake device mounted on the wheel is ultimately brought into close contact with the drum or disk of the wheel. Done.

The parking brake is operated to maintain the stationary state of the vehicle, and when the vehicle is started again, the parking brake is released before starting and then starts.

By the way, the conventional parking brake, such as a defect due to the chronic defect, such as latch and notch structure (continuously generated), and needs a structure having a different mechanism (mechanism).

Although not shown in the drawings, the parking lever 10 of the conventional parking brake is not suitable for introducing a module assembly concept.

In addition, as the parking lever 10 moves back and forth (up and down), a large area of space is required. As a result, there are many problems in actual layout. Due to such a layout problem, it is not possible to raise the cam 18 of the conventional parking brake. Accordingly, breakage of the brake cable 22 frequently occurs during repeated operation due to the curvature problem of the cam 18.

The present invention has been made to solve the above problems, and provides a structure of a parking brake for a vehicle in which the structure is simplified and advantageous to layout, and the operation is changed to prevent the occurrence of defects due to curvature problems. There is this.

In the structure of the vehicle parking brake of the present invention for achieving the above object, in the structure of the parking brake installed in the vehicle to be operated by the hand of the driver after the vehicle is stopped to maintain the stopped state of the vehicle, A base having a mounting groove formed in a spherical upper surface; A housing having a spherical shape and installed in the mounting groove and having a hollow part formed of an empty space; A handle member protruding from the outside of the housing to be operated by a driver's hand; A bolt member installed vertically in the housing, a length variable member installed on the bolt member and having a piezoelectric element therein, the length of which is variable, and a first stator installed on the bolt member under the length variable member; An actuator provided; A switch installed at an end of the handle member to operate the actuator; A fixing member having a second stator connected to the first stator at an upper end thereof, connected to the bolt member, and having a lower end fixed to the base; And a parking cable having one end fixed to one side of the housing.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 schematically shows a configuration of the structure of the vehicle parking brake according to the present invention. FIG. 3 is an exploded view of FIG. 2, and FIG. 4 is a half sectional view showing a half-section of the housing of FIG. 3. It is.

Prior to description, FIG. 2 is an actual model drawing, and FIG. 3 is an enlarged model of a housing to be described later to help understand the description.

Referring to each of these figures, the structure of the vehicle parking brake according to the present invention is installed on the vehicle to be operated by the driver's hand after the vehicle is stopped to maintain the stopped state of the vehicle. The base 31 is formed with a mounting groove, and is formed in a mounting groove 31a of the base 31 made of a spherical shape, as shown in Figure 4, the inside is formed with a hollow portion (32a) made of an empty space ( 32) and a handle member 33 protruding from the outside of the housing 32 to be operated by a driver's hand.

5 is an exploded perspective view of the main component of FIG. 4.

Referring to FIG. 5, in the structure of the vehicle parking brake according to the present invention, a bolt member 34 installed vertically in the housing 32, a bolt member 34, and a piezoelectric element are provided therein. An actuator 300 having a length variable member 35 whose length is variable and a first stator 36 provided on the bolt member 34 below the length variable member 35 is provided.

In addition, the structure of the vehicle parking brake according to the present invention, the switch 41 is connected to the wire (wire) is installed at the end of the handle member 33 to operate the piezoelectric element of the variable length member 35 of the actuator 300 ), And a second stator 42a connected to the first stator 36 of the actuator 300 is provided at the upper end thereof, and is connected to the bolt member 34 of the actuator 300, and the lower end thereof is connected to the base 31. ) Is fixed to the fixed member 42, and one end is configured to include a parking cable 43 is fixed to one side of the housing (32).

4 and 5, the contact member 37 for surface contact with the inner surface of the hollow portion 32a of the housing 32 to the upper portion of the length variable member 35 of the actuator 300. Is installed on the bolt member 34 to constitute the actuator 300, and the nut member 44 is fixed to the end of the bolt member 34 of the actuator 300 so that the actuator 300 is installed on the housing 32. Is fastened.

In addition, a bearing 45 supporting the fixing member 42 is installed in the lower end of the housing 32. As shown in FIG. 3, an end of the fixing member 42 is a mounting groove of the housing 32. It is screwed to the screw hole 31b formed in the center of 31a.

As shown in FIG. 5, a hexagonal groove 36a is formed at the center of the bottom of the first stator 36 of the actuator 300, and the second stator 42a of the fixing member 42 is formed of a hexagonal groove 36a. 1 was provided in a hexagonal shape to be fitted into the hexagonal groove (36a) of the stator (36).

In addition, as shown in Figure 6, the parking cable 43 is installed in a groove (32c) formed in a predetermined length and depth on the outer peripheral surface of the housing 32, the housing of the end of the groove (32c) In order to protect the end of the parking cable 43 on the outer circumferential surface of the 32, a screw 47, which is a fastening member of the cover member 46, is fixedly fastened to the fastening hole 32d.

As shown in FIG. 4, the housing 32 is detachably provided in the same hemispherical shape, and a plurality of protrusions 32e are formed on one side of two hemispheres facing each other, and the protrusions 32e on the other side thereof. ) Is inserted to form an insertion groove (not shown) that allows the housing 32 to be assembled into one sphere.

Due to such a configuration, as shown in FIG. 7, the housing 32 has a first groove 32f in which the bolt member 34 is installed, and a second groove 32g in which the bearing 45 is formed. And the installation hole 32h in which the said wire is inserted and provided is formed, respectively.

In addition, the mounting groove 31a of the base 31 forms a hemispherical surface such as the housing 32 in order to prevent frictional resistance and stress concentration with the housing 32.

Referring to the operation of the structure of the vehicle parking brake according to the present invention having the configuration as described above are as follows.

Referring back to the drawings, the structure of the vehicle parking brake according to the present invention, the handle member 33 is fixedly installed on one side, the actuator 300 is installed therein, the bolt member 34 of the actuator 300 The nut member 44 is fixedly installed at the end of the housing 32 to the housing 32.

In addition, the fixing member 42 is installed inside the housing 32 using the bearing 45 so that the second stator 42a is coupled to the first stator 36 of the actuator 300. The 42 is fixed to the mounting groove 31a of the base 31. Therefore, the base 31 serves as a support for the fixing member 42, and eventually supports the first and second stators 35 and 42a.

In addition, the switch 41 is installed in the handle member 33, the wire is connected to the piezoelectric element of the variable length member 35 of the actuator 300 is installed.

In addition, the groove 32c is formed on the outer circumferential surface of the housing 32 to install the parking cable 43, and covers the cover member 46 to protect the end of the fixed parking cable 43.

As described above, in the structure of the vehicle parking brake according to the present invention, when the switch 41 of the handle member 33 is pressed, the hexagonal nut-shaped first stator 36 of the actuator 300 is pushed down by the piezoelectric element, and the hexagon bolt is provided. Hold the second stator (42a) of the brother.

When the handle member 33 is pulled, the housing 32 rotates regardless of the base 31 because of the bearing 45 coupled to the housing 32.

It also describes the operating state when the vehicle is parked.

As shown in Figs. 8A and 8B, first, the handle member 33 is pulled back. When the switch 41 provided in the handle member 33 is pressed, a pressing force acts on the piezoelectric element of the variable length member 35 through a wire connected to the switch 41, and thus, a voltage generated by the piezoelectric element is applied. By varying the length of the variable length member (33) by the long hex nut first stator (36) of the actuator 300 located in the lower portion is lowered to hold the second stator (42a) of the hexagon bolt type.

8A and 8B, when the parking is released, pressing the switch 41 of the handle member 33 releases the pressing force on the piezoelectric element of the variable length member 33 through a wire connected to the switch 41. As the voltage generation is interrupted, the contrary to the above, the length variable member 33, which has been increased in length, is shortly variable as in the initial state, and the hexagonal nut type first of the actuator () located at the lower portion thereof. The stator 36 is lifted up and separated from the second stator 42a.

Subsequently, when the handle member 33 is returned to the front, the release of the parking brake is completed.

As described above, the vehicle parking brake structure according to the present invention has the following effects.

The appearance is much simpler than in the related art, so that interference problems with other components are hardly generated.

In addition, the volume occupied by the exterior area is significantly reduced compared to the related art, and thus there are many advantages in layout.

In addition, as the actuation mechanism is changed from the conventional back and forth movement to the rotational movement, the actuation area is much reduced so that there is no problem of interference with other components, and defects due to curvature problems are not generated.

Since most parts are fastened to the housing, it can be modularized, which improves assembly and helps layout.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (10)

In the structure of the parking brake installed on the vehicle to be operated by the driver's hand after the vehicle is stopped to maintain the stationary state of the vehicle, A base having a mounting groove formed in a spherical upper surface; A housing having a spherical shape and installed in the mounting groove and having a hollow part formed of an empty space; A handle member protruding from the outside of the housing to be operated by a driver's hand; A bolt member installed vertically in the housing, a length variable member installed on the bolt member and having a piezoelectric element therein, the length of which is variable, and a first stator installed on the bolt member under the length variable member. An actuator provided; A switch installed at an end of the handle member to operate the actuator; A fixing member having a second stator connected to the first stator at an upper end thereof and connected to the bolt member and having a lower end fixed to the base; And a parking cable having one end fixed to one side of the housing. The method of claim 1, And a contact member installed on the bolt member to the upper side of the length variable member to make a surface contact with the inner surface of the hollow part. 3. The method of claim 2, And a nut member fixedly fastened to an end of the bolt member to allow the actuator to be installed in the housing. The method of claim 1, And a bearing installed in the lower end of the housing to support the fixing member. The method of claim 1, The lower end of the fixing member is a structure of the vehicle parking brake, characterized in that screwed to the center of the mounting groove. The method of claim 1, A hexagonal groove is formed in the center of the bottom of the first stator, and the second stator is fitted into the hexagonal groove to be coupled to the structure of the vehicle parking brake. The method of claim 1, The parking cable has a structure of a vehicle parking brake, characterized in that installed in the groove formed in a predetermined length and depth on the outer peripheral surface of the housing. The method of claim 7, wherein And a cover member fixed to an outer circumferential surface of the housing by an end of the groove to cover and protect the end of the parking cable. The method of claim 1, The housing is a structure of a parking brake for a vehicle, characterized in that detachably provided in the hemispherical shape of the same size. 10. The method of claim 9, A structure of the parking brake for a vehicle, characterized in that a plurality of protrusions are formed on one side of the two hemispherical surfaces facing each other, and an insertion groove is formed on the other side so that the protrusions are assembled into one spherical shape.

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