KR19980055340A - Friction pads on disc brakes - Google Patents

Abstract

The present invention relates to a friction pad of a disc type brake device, and to prevent a problem that the friction pad is detached during repeated braking of the brake. To this end, the present invention includes a back plate attached to the piston tip of the brake cylinder, and a friction material that is contacted / frictioned with the disk plate fixed to the back plate and coupled to the wheel hub and rotated with the wheel. Here, the back plate 1 is attached with a guide 5 for guiding the assembly position of the friction material 2. The guide and the back plate are attached by applying an adhesive 4 between the friction material. In addition, the projection 3 of the friction material 2 inserts the hole of the back plate 1.

Description

Friction pads on disc brakes

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a friction pad of a disc brake device, and more particularly to a friction pad coupled to a wheel hub to contact / friction with a disc plate that rotates with a wheel to brake a vehicle.

As is well known, brake devices used in automobiles are used to decelerate or stop a driving vehicle or to maintain a parking state. Such a brake device mainly uses a friction type brake that converts the kinetic energy of the automobile into thermal energy by using frictional force, and releases the thermal energy to the atmosphere.

The basic structure of such a brake device includes an operating mechanism that increases and transmits the driver's operating force by using a link or hydraulic pressure, and a main body that generates the braking force by the force.

The brake body includes a drum brake device including a wheel cylinder, a brake shoe, a back plate for installing the brake shoe, a brake drum, and the like, and a disk for hydraulically pressing the brake pads on both sides of the brake disk that rotates together with the wheels of the vehicle. There is a brake system.

In the disc brake device, one brake cylinder is provided in the caliper. The brake cylinder is operated by hydraulic pressure supplied from the master cylinder, and a pad is installed at the tip of the piston which is linearly moved. Between the two pads installed opposite to each other inside the caliper is a disk plate coupled to the wheel hub and rotated with the wheel.

Therefore, the disc brake system receives hydraulic pressure from the master cylinder, the piston of the brake cylinder pushes the pad to the disc plate, and the other pad is also pressed against the disc plate by the reaction force, thereby causing a braking action.

In the above-described disc brake system, the friction pad includes a back plate 1 fixed to the piston tip of the brake cylinder, as shown in Figs. 1 and 2, and fixed to the back plate and in contact with / friction with the disc plate. It consists of the friction material 2 which becomes.

In this case, the friction material 2 has a projection 3 inserted into the hole of the back plate 1, and an adhesive 4 is applied and fixed between the back plate 1 and the back plate 1.

However, since the fixing structure of the friction material 2 described above is not strong, there are cases in which it is often detached from the back plate 1 by repeated braking. If this problem occurs while driving the car, it causes a big accident.

The present invention has been proposed for the purpose of solving the problems of the prior art, the present invention is to support the friction material firmly, to prevent the separation of the friction material and improve the reliability of the braking device.

1 is a perspective view showing a friction pad of a disc brake system of a typical vehicle.

FIG. 2 is a cross-sectional view of the state taken along the line A-A of FIG.

3 is a cross-sectional view showing a friction pad of the disc brake device according to the present invention.

* Description of the symbols for the main parts of the drawings *

1-back plate 2-friction

3-protrusion 4-adhesive

5-guide

In order to achieve the above object, the present invention proposes a friction pad of a disc brake apparatus realized by the following means.

That is, the present invention includes a disc brake including a back plate attached to the piston end of the brake cylinder, and a friction material attached to the back plate and coupled to the wheel hub and friction / contacting the disk plate surface rotated with the wheel. A friction pad of an apparatus, wherein the back plate is attached with a guide for guiding the assembly position of the friction material, and the guide and the back plate and the friction material are combined by an adhesive.

According to this configuration, the friction material of the present invention is bonded to the back plate and the guide at the same time, the contact area is enlarged, and the load generated during friction with the disk plate by the guide is reduced, thereby improving durability and reliability.

EMBODIMENT OF THE INVENTION Hereinafter, preferred embodiment for implementing this invention is demonstrated in detail based on an accompanying drawing.

EXAMPLE

3 is a sectional view showing a friction pad of the disc brake apparatus according to the present embodiment.

In describing the present embodiment, the same reference numerals are used for the configuration of the present embodiment, which is the same as the drawings cited in the prior art, and will not be described again for clarity.

In the drawings, reference numeral 1 denotes a back plate, and 2 denotes a friction material.

As described in the prior art, the friction pad is, as is well known, pushed by the piston of the brake cylinder operated under hydraulic pressure of the master cylinder, thereby contacting / friction with the disk plate which is coupled to the wheel hub and rotates with the wheel. In addition, the driving state of the vehicle is decelerated, stopped and the parking state is maintained.

This friction pad is composed of a back plate 1 fixed to the piston of the brake cylinder and a friction material 2 fixed to the back plate 1.

Here, the guide 5 is attached to the back plate 1 in order to firmly support the friction material 2 according to the purpose of the present embodiment. The guide 5 guides the assembly position of the friction material 2 and at the same time enlarges the contact area.

More specifically, the friction material 2 is fitted with the projection 3 inserted into the hole of the back plate 1. At this time, the guide 5 is in contact with the friction material 5 to guide the assembly position.

In addition, the friction material 2 is in contact with the surfaces of the back plate 1 and the guide 5 at the same time, and more firmly coupled by the adhesive 4 applied therebetween.

In this case, the guide 5 also serves as an indicator for informing the driver of the wear state of the friction material 2.

According to the configuration of the present embodiment described above, it can be seen that the friction material 2 is fixed in contact with the back plate 1 and the guide 5 at the same time. This fixing structure enlarges the support area of the friction material 2, so as to have sufficient resistance to the load during braking.

Through the embodiments described above, it can be seen that the friction pad of the disc brake device according to the present invention substantially solves the problems of the prior art.

That is, according to the present invention, the effect that the rigid fixing structure of the friction material and the back plate is realized is achieved.

Therefore, the effect of improving the durability and reliability of the brake device is also obtained.

On the other hand, the present invention is not limited to the above-described specific preferred embodiment, and any person having ordinary skill in the art to which the invention belongs without departing from the gist of the invention claimed in the claims, various modifications Would be possible.

Claims (1)

In the friction pad of the disk-type brake device comprising a back plate attached to the piston end of the brake cylinder, and a friction material fixed to the back plate and coupled to the wheel hub and in contact with the disk plate rotated with the wheel. A guide attached to the back plate to guide the assembly position of the friction material; The projection of the friction material is inserted into the hole of the back plate, the guide and the back plate is a friction pad of the disk-type brake device, characterized in that bonded with the friction material at the same time by an adhesive.