KR19980038993A - Core structure of disc brake system - Google Patents

Abstract

The present invention discloses a shim structure of a disc brake device. The present invention disclosed is interposed between the brake pad (4) and the piston (5) frictionally contacted to the disk (3) mounted on the wheels by the piston (5) so that noise and heat during brake operation are applied to the brake pad. In the structure of the shim to block the transmission to the, the shim 61 is characterized in that it is formed of a structure of the elastic material and spaced apart from the central portion of the brake pad (4) at regular intervals.

(Selectivity: Fig. 2)

Description

Core structure of disc brake system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shim structure of a disc brake device, and more particularly, to a shim structure interposed between a brake pad and a disc that apply braking by pressing both sides of a disk rotating together with a wheel to prevent heat transfer to the pad. It is about.

In general, in a vehicle, a brake device is an important device used to maintain a parking state while simultaneously decelerating or stopping a driving vehicle. The brake device mainly uses a friction type brake that converts the kinetic energy of the vehicle into thermal energy by using frictional force, and releases the energy to the atmosphere to brake.

Various types are used for the brake device, and the basic structure is composed of an operation mechanism that greatly transfers the driver's operating force using a link or hydraulic pressure, and a main body that generates the braking force by the force.

In addition, the brake device includes a foot brake mainly used when driving and a parking brake used for parking, the foot brake is hydraulic, and the parking brake uses a mechanical type.

Foot brakes generally apply a friction material to brake drums or + brake discs that are coupled to the inside of the wheels, and generate the braking force by using the friction force. When the driver presses the brake pedal, all the wheels generate braking force. .

The hydraulic brake uses the Pascal principle, and includes a master cylinder that generates hydraulic pressure when the pedal is pressed, a brake body that receives the hydraulic pressure and brakes the wheel, and a brake pipe and a hose forming a flow path.

The brake body is structurally divided into a drum type and a disk type. The drum brake is composed of a wheel cylinder, a brake shoe, a drum, and the like. The drum cylinder receives hydraulic pressure provided from the master cylinder and pushes the brake shoe onto the drum to apply braking. The disc brake is composed of a piston, a brake pad, a disc, and the like, and is braked by pushing the brake pads attached to both sides of the disc to the disc by hydraulic pressure provided from the master cylinder.

[Prior art]

The structure of a conventional disc brake device is shown in cross section in FIG.

As shown in the drawing, the disc 3 is mounted inside the wheel 2 supporting the tire 1 to rotate together, and the brake pad 4 in frictional contact with the disc 3 generates a braking force. Are located on both sides of the disc 3.

The brake pad 4 has a rear end thereof connected to a piston 5 operated by hydraulic pressure generated in the master cylinder, and between the shim for preventing noise and heat transfer to the pad 4 during brake operation. 6) is interposed.

However, the conventional shim structure is a structure in which the entire surface is in close contact with the pad 4, so that the brake pad 4 moved in the direction of the disc 3 by the piston 5 is released and the brake pad 4 is not returned to its original position. There was a problem that it was not easy.

Accordingly, the present invention has been made to improve the problems caused by the shim structure of the conventional disc brake system, improve the braking performance by improving the shim structure to make the home position return operation of the brake pad more efficiently. It is an object of the present invention to provide a shim structure of a disc brake system.

1 is a cross-sectional view showing the core structure of a conventional disc brake device

Figure 2 is a cross-sectional view showing the core structure of the disc brake device according to the present invention

* Explanation of symbols for the main parts of the drawings

3: disc 4: brake pads

5: piston 61: shim

62: lubricant

In order to achieve the above object, the present invention is operated by a piston, interposed between the brake pad and the piston in frictional contact with the disk mounted on the wheel to block noise and heat during brake operation from being transmitted to the brake pad. In the structure of the seam to let

The core is a material of an elastic body, characterized in that formed in a structure spaced apart from the central portion of the brake pad at a predetermined interval.

Preferably, the space between the shim and the brake pad is filled with lubricating oil for absorbing heat transferred from the disk to the brake pad.

According to the above-described configuration of the present invention, since the shims are spaced apart from the brake pads at a predetermined interval, the brake pads are strongly pushed onto the disc while the front surface is in close contact with the brake pads by the piston, and also the material of the elastic body makes the brake more effective. In-situ operation of the pad can be achieved.

[Example]

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

2 is a cross-sectional view showing a shim structure of a disc brake system according to the present invention.

For reference, in the description of the configuration of the present embodiment, the same parts as in the prior art described at the beginning of the specification are omitted and repeated descriptions are mainly described in order to avoid duplication of description. use.

As shown, the shim 61 of the elastic body is interposed between the piston 5 and the brake pad 4, which is in frictional contact with the disc 3 by the piston 5 to generate a braking force. The shim 61 has a shape in which a central portion thereof protrudes outward so that the front surface of the brake pad 4 does not come into close contact with the brake pad 4, and a space portion having a predetermined size is formed between the brake pad 4 and the shim 61. In the space part is filled a lubricating oil 62 which absorbs heat transferred from the disk 3 to the brake pad 4.

Reference numeral l is a tire and 2 is a lot.

With the above configuration, when the brake is actuated, hydraulic pressure is generated in the master cylinder and transmitted to the piston 5. The brake pad 4 is strongly adhered to the disk 3 which is rotated together with the wheel 2 by the piston 5 to generate a braking force.

As such, the brake pad 4 is frictionally contacted with the disk 3 to generate severe noise and high heat, which is transmitted to the brake pad 4 to promote wear of the brake pad 4. In order to prevent this, the shim 61 interposed between the brake pad 4 and the piston 5 is added to the above function, and in the present invention, the brake pad 4 is extended while the portion projected by the piston 5 is unfolded. The brake pad 4 can also be quickly returned to its original position by being strongly pushed against the disc 3 to increase the braking force and having a material of an elastic body.

In addition, heat transferred from the disk 3 to the brake pad 4 is absorbed by the lubricating oil 62, thereby more effectively preventing heat transfer.

According to the present invention as described above, the shim 61 of the elastic body is made of a structure arranged in price with the brake pad (4). When the brake is operated, the brake pad 4 can be brought into frictional contact with the disk 3 more strongly, and when the brake pad is released, the brake pad 4 can be quickly returned to the original position. Thus, the braking performance of the disc type braking device is greatly improved.

In addition, since the lubricating oil 62 is filled in the space between the shim 61 and the brake pad 4, the heat transferred from the disk 3 to the brake pad 4 is absorbed by the lubricating oil 62. The heat transfer to the brake pad 4 can be more effectively interrupted, and therefore, the wear amount of the brake pad 4 can be reduced and the life can be extended.

In addition, this invention is not limited to said Example, It can variously change and implement in the range which does not deviate from the summary.

Claims (2)

In the shim structure which is operated by the piston, interposed between the brake pad and the piston in frictional contact with the disk mounted on the wheel to block the noise and heat during brake operation to be transmitted to the brake pad, The shim has a material of an elastic body, and the shim structure of the disc brake system, characterized in that formed in a structure spaced apart from the center portion of the brake pad at a predetermined interval. The shim structure of a disc brake apparatus according to claim 1, wherein a space between the shim and the brake pad is filled with a lubricating oil for absorbing heat transferred from the disk to the brake pad.