KR19990033856A - Caliper coupling structure of disc brake - Google Patents

Abstract

The present invention is to provide a caliper coupling structure of a disc brake that can prevent the lowering of braking efficiency by preventing lateral vibration and eccentric movement generated when the brake pad is slid between the caliper housing and the caliper. The structure is disposed between the caliper (2) and the caliper housing (4), a plurality of leaf springs (32, 34, 36, 38) is fixed to the pad plate 14 to which the brake pad 12 is attached It has a configuration to absorb vibration generated during braking.

Description

Caliper coupling structure of disc brake

The present invention relates to a caliper coupling structure of a disc brake, and more particularly, to prevent lateral vibration and eccentric movement generated when the brake pad is slid between the caliper housing and the caliper, thereby preventing a decrease in braking efficiency. It relates to a caliper coupling structure of a disc brake.

In general, the brakes used for braking in automobiles can be divided into the main brake wheel brake for reducing the driving speed or temporarily stopping while driving, and the parking brake for long parking. The brake may be further classified into a drum brake and a disk brake according to the form of the friction force.

Among these, the drum brake obtains a friction braking force by inflating the brake lining and bringing it into close contact with the brake drum while the wheel cylinder is operated by oil fed from the brake master cylinder in response to the pressurization of the brake pedal. In addition, the disc brake can be divided into fixed caliper type, floating frame type and sliding caliper type according to the caliper movement method. The sliding caliper type which is adopted in many passenger cars has a piston pad by the brake oil delivered from the master cylinder. At the same time, the caliper slides by the reaction force, and the pad on the opposite side is pressed against the disc and braked. The configuration of a general disc brake will be described with reference to the accompanying FIG. 1 for better understanding of the present invention.

1 is an exploded perspective view showing a configuration of a general disc brake. As shown here, the disc brake obtains a braking force by bringing the brake pad 12 into close contact with both sides of a rotating disc. In the configuration of the disc brake, the caliper 2, the caliper pin 6 and the caliper 2 are coupled to the caliper 2 by a caliper bolt, and the caliper housing 4 in which the piston 20 is mounted therein and the piston ( It consists of a brake pad 12 pressed by the action of 20) to be in close contact with the disk. The brake pad 12 is fixed to the pad plate 14, and a brake pad shim is attached to the outside of the pad plate 14. The caliper pin 6 is fitted with a boot 8.

In addition, an expansion spring is attached to the caliper housing 4 so that the brake pad 12 and the piston 20 are always in contact with each other so that a shock noise is not generated during braking and the circuit pressure is extinguished. The piston 20 then helps to return to its original position. The caliper 2 is also equipped with the pad spring of the same purpose.

Next, Figure 2 is a cross-sectional view showing the assembly state of the portion A in Figure 1, showing a caliper coupling structure of a conventional disc brake. As shown here, a pad plate 14 with a brake pad 12 is disposed between the caliper 2 and the caliper housing 4. Therefore, the brake pad 12 can slide along the inner surface of the caliper 2 at the time of pressurization of the piston 20.

In the caliper coupling structure of the disc brake according to the prior art having such a configuration, when the brake pad 12 is slid between the caliper 2 and the caliper housing 4, the occurrence of a joint due to lateral vibration and the side acting at this time There is a problem of slipping while being eccentric by the directional force resulting in a drop in braking force.

The present invention has been made to solve the above problems, by placing a plurality of leaf spring in the contact portion of the caliper and the pad plate and the contact portion of the pad plate and the caliper housing to prevent the joint and lateral eccentric movement generated during braking An object of the present invention is to provide a caliper coupling structure of a disc brake that can improve braking performance.

1 is an exploded perspective view showing a configuration of a general disc brake

Figure 2 is a cross-sectional view showing the assembly state of the portion A in Figure 1, showing a caliper coupling structure of a conventional disc brake

Figure 3 is a view similar to Figure 2, a cross-sectional view showing a caliper coupling structure of the disc brake of the present invention

♣ Explanation of symbols for main part of drawing ♣

2: Caliper 4: Caliper Housing

12: Brake pad 14: Pad plate

16: Brake pad seam 20: Piston

32, 34, 36, 38: leaf spring

The object of the present invention described above is to be coupled to the caliper by means of a caliper, a caliper pin and a caliper bolt, and includes a caliper housing in which a piston is mounted therein, and a brake pad pressed by the action of the piston to be in close contact with the disc. The disc brake is disposed between the caliper and the caliper housing, and is achieved by the caliper coupling structure of the disc brake, wherein a plurality of leaf springs are fixed to the pad plate to which the brake pad is attached.

According to the caliper coupling structure of the disc brake according to the present invention, a plurality of leaf springs welded to the pad plate absorb vibrations generated when the caliper and the caliper housing come into contact with each other to prevent the seams, while Thereby, there is an advantage of increasing the braking efficiency by preventing the phenomenon of sliding eccentrically.

Hereinafter, the caliper coupling structure of the disc brake according to the preferred embodiment of the present invention will be described in detail with reference to the accompanying FIG. 3. (The structure of the general disc brake described in FIG. 1 is denoted by the same reference numeral.)

Figure 3 is a view similar to Figure 2, a cross-sectional view showing a caliper coupling structure of the disc brake of the present invention.

As shown here, in the present invention, a plurality of leaf springs are welded to the pad plate 14 to which the brake pad 12 is attached in order to absorb vibration generated when the disk and the brake pad come into contact with each other. Fixed.

Among these, the first to third plate springs 32, 34 and 36 are fixed on the pad plate 14 in contact with the caliper 2, and the pad plates 14 in contact with the caliper housing 4 The four leaf spring 38 was fixed.

In this way, the pad plate 14 is slidably moved at the time of braking by the four leaf springs 32, 34, 36, 38 fixed to the upper and lower sides and the left and right sides of the pad plate 14, respectively. In addition, vibration generated at the contact of the disc and the brake pad is sufficiently absorbed by the leaf springs 32, 34, 36, 38 of the present invention fixed to the pad plate 14, whereby a joint-like sound is generated. Can be prevented.

According to the present invention described above, the vibration caused when the caliper and the caliper housing is in contact with the caliper housing by the plurality of leaf springs welded to the pad plate to prevent the joint, while sliding eccentrically by the lateral force It is possible to provide the effect of preventing the phenomenon and increasing the braking efficiency.

Claims (1)

It is coupled to the caliper 2 by means of a caliper 2, a caliper pin 6 and a caliper bolt 10, a caliper housing 4 in which a piston 20 is mounted, and the piston 20. In the disk brake having a brake pad 12 is pressed by the action of the contact with the disk, It is disposed between the caliper (2) and the caliper housing (4), a plurality of leaf springs (32, 34, 36, 38) is fixed to the pad plate 14 to which the brake pad 12 is attached Caliper coupling structure of the disc brake.