KR20140011549A - Shoe for dih parking brake in vehicle - Google Patents

Abstract

The present invention relates to a shoe for a DIH parking brake. The present invention comprises a ring type body (20) in which one side is opened and an elastic member (30) which increases restoring force of the body (20) by connecting opened parts of the body (20). The body (20) forms a cross section as straight form in order that an outer circumference surface has a constant size. A pair of linings (40) is prepared on the outer circumference surface of the body (20). The present invention is provided to closely attach the shoe for the break and a lining, thereby preventing the break of an edge part of the lining.

Description

Shoe for DIH parking brake {SHOE FOR DIH PARKING BRAKE IN VEHICLE}

The present invention relates to a shoe for a drum in hat (hereinafter referred to as "DIH") parking brake, and more particularly, to a shoe for a DIH parking brake having one integral shoe with an integrally attached lining. will be.

In general, when the parking cable connected to the hand lever pulls the lever, the DIH type parking brake generates a parking braking force by mechanical force according to the operation of the lever.

The DIH parking brake is connected to the dust cover mounted on the knuckle (or carrier) of the wheel and the lever provided on the torque plate, and the brake shoes with pads are provided on both sides, and the rotational force adjusts the distance between the brake shoes. An adjuster is provided.

The brake shoe is composed of a pair of two symmetrical pairs arranged on both sides, or integrally as one.

The two shoe type having two brake shoes has a problem that the structure is more complicated than the one shoe type, and the number of parts increases, and the weight increases.

On the other hand, the one-shoe type integrated shoe has a simple structure compared to the two-shoe type, there is an advantage that can implement a lightweight and high-efficiency parking brake device according to the number of parts.

An example of a technology related to such a one shoe type parking brake device is disclosed in Korean Patent Publication No. 10-2010-0126974 (published on December 3, 2010, hereinafter referred to as 'Patent Document 1').

The conventional one shoe type parking brake device including the patent document 1 is called a bancassia DIH parking brake device, and the number of parts and weight reduction can be easily achieved as compared with a general two shoe type parking brake device.

In addition, the conventional one-shoe type parking brake device has a simple structure and a small number of parts, which reduces weight and drag, improves braking performance, and facilitates fabrication, thereby improving the mounting performance, and easily performs replacement of shoes and other parts. There are many advantages in terms of production and post-installation service.

On the other hand, in the patent document 1, the one-shoe type integrated shoe is designed to have a restoring force with its own rigidity, unlike the two shoe type that releases the brake by using the restoring force of the spring.

For example, FIG. 1 is a perspective view of an integrated shoe applied to a one shoe type parking brake apparatus according to the prior art, and FIG. 2 is a cross-sectional view of the shoe and lining shown in FIG.

As shown in FIG. 1, the integrated shoe 1 is designed in a circular shape to increase the elastic force of the shoe 1 as it is designed to release the brake using the restoring force of the shoe 1 instead of the spring.

And the cross-section of the integrated shoe 1 is a friction force between the shoe (1) and the drum (not shown) due to the characteristics of the material of the shoe (1) is bent in a 'c' shape and made of steel as shown in Figure 2 The lining 2 is attached to the outer circumferential surface of the shoe 1 to improve the manufacturing.

However, as shown in FIG. 2, when the cross-section is bent into a 'c' shape to produce the integrated shoe 1, as the corner portion of the integrated shoe 1 has a rounded radius of curvature R, the integral type In the process of attaching the lining 2 to the outer circumferential surface of the shoe 1, the integral shoe 1 and the lining 2 are incompletely attached.

Accordingly, the one-shoe type parking brake device according to the prior art has a problem that the end of the lining 2 incompletely attached to the outer circumferential surface of the integrated shoe 1 is broken and the braking force of the brake device is lowered.

Republic of Korea Patent Publication No. 10-2010-0126974 (published 3 December 2010)

The present invention is to solve the problems described above, the object of the present invention is to manufacture a brake shoe applied to the DIH parking brake as a single piece to simplify the structure, reduce the number and weight of parts and improve the braking force To provide a shoe for the DIH parking brake that can be made.

Another object of the present invention is to provide a shoe for the DIH parking brake that can completely attach the brake shoe and the lining to prevent breakage of the lining.

According to a feature of the present invention for achieving the object as described above, the present invention provides an elastic member that increases the restoring force of the body by connecting the body formed in a ring shape with one side and the opened portion of the body to each other It includes, the body is formed in a cross-section '1' shape so that the outer peripheral surface has a constant area, a pair of lining is bonded to the outer peripheral surface of the body surface contact.

The pair of lining is formed in a curved surface having the same curvature as the curvature of the body to be in close contact with the outer peripheral surface of the body.

First and second grooves are provided at both sides of one side of the body cut and opened, and the elastic member is bonded to the inner circumferential surfaces of the first and second grooves.

The elastic member is formed with an elastic groove corresponding to the opened portion of the body, the elastic member is elastically deformed to widen the area of the elastic groove during the braking operation of the parking brake, elastically deformed during the release operation of the parking brake Restoring the original shape in the state while providing an additional restoring force to the first and second grooves.

The elastic member is characterized in that the coupling hole is coupled to the hub bearing and the insertion hole for attaching to the knuckle portion or axle flange portion of the vehicle is formed.

As described above, according to the present invention, the brake shoes and the lining formed in the shape of “one” are completely adhered to each other, thereby preventing the breakage of the lining edges due to the incomplete adhesion of the brake shoes and the lining. have.

In addition, the present invention can be quickly restored to the original shape by using the additional restoring force of the elastic member with the elastic force of the brake shoe during the braking and releasing operation of the parking brake.

Accordingly, the present invention has the effect of simplifying the structure, reducing the number of parts and weight, and improving the braking force by manufacturing the brake shoe applied to the DIH parking brake as a single piece.

In addition, the present invention is mounted on the vehicle by using the coupling hole and the insertion hole formed in the elastic member of the brake shoe, so that the mounting operation of the brake shoe can be easily performed by removing a separate mounting means for mounting the brake shoe to the vehicle. In addition, workability can be improved when replacing brake shoes and other parts.

1 is a perspective view of an integrated shoe applied to a one shoe type parking brake apparatus according to the prior art,
2 is a cross-sectional view of the shoe and lining shown in FIG.
3 is a perspective view of a shoe for a DIH parking brake according to an exemplary embodiment of the present invention;
4 is a front view of the shoe shown in FIG.
5 is a cross-sectional view of the shoe shown in FIG.

Hereinafter, a DIH parking brake shoe according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a perspective view of a shoe for a DIH parking brake according to a preferred embodiment of the present invention, FIG. 4 is a front view of the shoe shown in FIG. 3, and FIG. 5 is a cross-sectional view of the shoe shown in FIG. 3.

DIH parking brake shoe according to a preferred embodiment of the present invention, as shown in Figure 3, by using a friction shoe generated between the inner peripheral surface of the drum using one brake shoe 10 made in one piece of the parking brake Perform braking and releasing operation.

To this end, as shown in FIGS. 3 and 4, the brake shoe 10 connects the body 20 formed in a ring shape with one side opened and the opened portion of the body 20 to each other to connect the body 20. It includes an elastic member 30 to increase the restoring force of, a pair of lining 40 is bonded to the outer peripheral surface of the body 20.

As shown in FIG. 5, the body 20 is formed in a ring shape having an outer circumferential surface having a predetermined area so as to be in surface contact with the lining 40, and has a cross-section of 'I' to facilitate bonding with the lining 40. It is formed into a shape.

In particular, the body 20 has one side cut and opened, and the first and second grooves 21 and 22 are provided on both sides of the body 20, and the elastic member 30 is formed on the inner circumferential surface of the first and second grooves 21 and 22. ) Is joined by a method such as welding.

Accordingly, the cross-section of the portion where the first and second grooves 21 and 22 and the elastic member 30 are bonded to each other has a substantially 'T' shape.

The elastic member 30 serves to transmit additional restoring force so that the body 20 is restored to its original shape when the parking brake is released.

To this end, the elastic member 30 is formed in a substantially fan shape, the elastic groove 30 is formed on one side of the elastic member 30 to correspond to the open portion of the body 20.

Here, the elastic groove 31 is a control unit for controlling the distance between the first and second grooves 21 and 22 of the body 20 by receiving the operating force of the parking lever (not shown) when the parking brake is operated. It is elastically deformed to widen the area by the operation of (not shown).

And the elastic groove 31 is restored to its original size as the area is narrowed to provide additional restoring force to the body 20 when the parking brake is released.

Accordingly, the present invention can quickly restore the integrated shoe to its original shape by using the additional restoring force of the elastic member together with the elastic force of the integrated shoe during braking and releasing operation of the parking brake.

In addition, when the brake shoe 10 is mounted on the vehicle, the elastic member 30 is attached to the coupling hole 32 to which the hub bearing (not shown) of the vehicle is coupled and the knuckle portion or the axle blend portion of the vehicle. A plurality of insertion holes 33 are formed.

The pair of linings 40 are attached to the upper and lower outer peripheral surfaces of the body 20, respectively, and serve to increase the friction force generated between the drum and the drum.

The pair of lining 40 is formed in a curved surface corresponding to the curvature of the body 20 to be in close contact with the body 20.

Here, as shown in FIG. 5, the body 20 of the brake shoe 10 and the lining 40 are closely adhered to each other as the cross-section of the body 20 is formed in a 'one' shape.

Accordingly, the present invention can prevent the lining tip breakage caused by the problem that the brake shoe and the lining is incompletely bonded.

Next, the coupling relationship of the DIH parking brake shoe according to the preferred embodiment of the present invention will be described in detail.

First, one side of the body 20, which is formed in a 'one' cross section, is formed to be bent into a ring shape opened by cutting.

After the elastic member 30 is positioned so that the elastic groove 31 of the elastic member 30 is positioned in the opened portion of the body 20, the elastic members (30) are formed on the inner circumferential surfaces of the first and second grooves 21 and 22, respectively. Both end faces of 30) are joined by welding or the like.

Accordingly, the first and second grooves 21 and 22 and the elastic member 30 of the body 20 have a 'T' shape in cross section.

Subsequently, the lining 40 is attached to the upper and lower outer peripheral surfaces of the body 20 to complete the assembly of the brake shoe 10.

At this time, the body 20 and the pair of lining 40 is formed of a curved surface having the same curvature, and the body 20 and the pair of lining ( 40) is completely adhered and glued.

As such, the assembled brake shoe 10 couples the hub bearing to the coupling hole 32 formed in the elastic member 30, and inserts a screw formed in the knuckle portion or the axle flange portion of the vehicle into the insertion hole 33. After tightening the nut is mounted on the vehicle.

Accordingly, the present invention can easily perform the mounting work of the brake shoe by removing the separate mounting means for mounting the brake shoe to the vehicle, it is possible to improve the workability when replacing the brake shoe and other parts have.

Next, a method of operating the DIH parking brake shoe according to the preferred embodiment of the present invention will be described in detail.

First, during the braking operation of the parking brake, the adjustment unit, which has received the operating force of the parking lever, operates so that the distance between the first and second grooves 21 and 22 of the body 20 is farther away.

Then, while the distance between both ends of the elastic member 30 bonded to the inner circumferential surface of the first and second grooves 21 and 22 also increases, the elastic member 30 is elastically deformed so that the area of the elastic groove 31 is widened. do.

Accordingly, a frictional force is generated while the pair of lining 40 adhered to the outer circumferential surface of the body 20 and the drum are in contact with the parking brake to perform a braking operation.

At this time, the cross-section of the body 20 is formed in a '一' shape, the edge portion of the lining 40 in contact with the body 20 as the body 20 and the pair of lining 40 is completely adhered and bonded This breaking phenomenon is prevented.

On the other hand, during the release operation of the parking brake, the force for adjusting the control unit so that the distance between the first and second grooves 21 and 22 is removed.

Then, the first and second grooves 21 and 22 are restored at their original intervals by the elastic force of the body 20.

At this time, the elastic member 30 is restored to its original state to narrow the area of the elastic groove 31 in the elastically deformed state during the braking operation of the parking brake, and the first and second groove portions 21 and 22 of the body 20. ) Provides additional resilience.

Accordingly, the present invention can quickly restore the brake shoe to its original shape by using the additional restoring force of the elastic member together with the elastic force of the brake shoe during the braking and releasing operation of the parking brake.

Through the process as described above, the present invention is to adhere to the brake shoe and the lining is formed in a one-shaped cross-section completely in contact with each other, thereby the phenomenon that the lining edge portion breaks as the brake shoe and the lining is incompletely in close contact with each other. You can prevent it.

Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

The present invention is applied to the shoe technology for the DIH parking brake, by which the brake shoe and the lining are completely adhered and adhered, thereby preventing the edge portion of the lining from being broken.

10: integral shoe 20: body
21 and 22: first and second grooves 30: elastic member
31: elastic groove 32: coupling hole
33: insertion hole 40: lining

Claims (5)

Body 20 formed in a ring shape of one side is opened and
It includes an elastic member 30 for connecting the opened portions of the body 20 to each other to increase the restoring force of the body 20,
The body 20 is formed in a cross-section '一' shape so that the outer peripheral surface has a constant area,
DIH parking brake shoe, characterized in that the outer circumferential surface of the body 20 is a pair of lining 40 is in contact with the surface. The method of claim 1,
The pair of lining (40) is DIH parking brake shoes, characterized in that formed in a curved surface having the same curvature as the curvature of the body 20 to be in close contact with the outer peripheral surface of the body (20). 3. The method according to claim 1 or 2,
First and second grooves 21 and 22 are provided at both sides of one side of the body 20 which is cut and opened.
DIH parking brake shoes, characterized in that the elastic member 30 is bonded to the inner peripheral surface of the first and second grooves (21, 22). The method of claim 3,
The elastic member 30 is formed with an elastic groove 31 corresponding to the opened portion of the body 20,
The elastic member 30 is elastically deformed to widen the area of the elastic groove 31 when the parking brake is braked, and is restored to its original shape in an elastically deformed state when the parking brake is released. 2 DIH parking brake shoe, characterized in that to provide an additional restoring force to the groove (21, 22). 5. The method of claim 4,
The elastic member 30 has a coupling hole 32 to which the hub bearing is coupled and
DIH parking brake shoes, characterized in that the insertion hole 33 for attaching to the knuckle portion or axle flange portion of the vehicle is formed.

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