KR19980021787U - Pad Plate of Disc Brake - Google Patents

Abstract

The present invention relates to a disc brake, the object of which is to improve the pad plate to prevent the pad from being separated during braking action.

The pad plates 500 and 600 of the disc brake according to the present invention constitute a rivet 800 extending to a predetermined depth of the pads 510 and 610.

Accordingly, the pads 510 and 610 and the pad plates 500 and 600 are subjected to shear stress by the rotational torque of the disk 70 during the braking operation. The pads 510 and 610 are suppressed from being pushed by the rivets 800. Separation is prevented. In addition, the front end of the pad 510, 610 when the front end of the rivet 800 and the disk 70 is rubbed to generate a metal sound, there is an advantage that there is no need to install a separate pad wear detection member by recognizing this to the driver. .

Description

Pad Plate of Disc Brake

The present invention relates to a disc brake, and more particularly to a pad plate having a pad friction with the side of the disc.

In general, a brake mounted on a vehicle is a device for decelerating, stopping or maintaining a stopped state of a vehicle while driving. The brake that functions as this is a method of converting the kinetic energy while driving into thermal energy by mechanical friction device to release its frictional heat into the air and braking. There are a drum hydraulic brake and a disk hydraulic brake. Instead, the disk-shaped disks that rotate together with the wheels are strongly pressed with pads on both sides to obtain braking force, as shown in FIG.

As shown in the drawing, a general disc brake is largely divided into a housing 10 in which a piston 20 is installed, and a carrier 40 in which pad plates 50 and 60 are installed and fixed to a vehicle body (not shown).

The housing 10 is provided with a piston 20 that moves back and forth by hydraulic pressure in the cylinder 11 in which the inlet 12 is formed. And both ends of the housing 10 is formed with a fastening hole 13, which is for fastening with the carrier (40). Reference numeral 21 is a seal for restoring the piston 20 when the hydraulic pressure is released to the cylinder 11.

In the carrier 40, an installation space 42 is formed at the center thereof, and the installation spaces 42 are provided with pad plates 50 and 60 having a pair of pads 51 and 61 attached thereto. The pad plates 50 and 60 are spaced apart by a predetermined interval so as to move forward and backward in the installation space 42. The inner pad plate 50 and the outer pad 61 having the inner pad 51 attached to one surface thereof are It is distinguished by an attached outer pad plate 60. At this time, the other surface of the inner pad plate 50 is configured to be in contact with the piston 20 moving forward and backward. In addition, a disk-shaped disk 70 is inserted between the pair of pads 51 and 61 to insert a portion of the outer circumference thereof and rotate together with a wheel (not shown) at a predetermined gap with the pad.

On the other hand, the housing 10, the piston 20 is installed and the carrier 40, the pad plate (50, 60) is installed is slightly slidably coupled, its coupling structure is as follows.

First, as described above, fastening holes 13 are formed at both ends of the housing 10, respectively, and fastening grooves 41 having a predetermined depth on both ends of the carrier 40 to face the fastening holes 13, respectively. This consists of Then, one end of the bolt 14 is coupled to the fastening hole 13, and the guide rod 30 is inserted into the other end of the fastening groove 41 and 410 g. The housing 10 is slidably coupled.

When the brake pedal (not shown) is pressed in a state in which a vehicle having a disk brake configured as described above is running, hydraulic pressure is applied from the master cylinder, which is not shown, and the hydraulic pressure is continuously applied to the cylinder 11 through the inlet 12. Is delivered to.

Therefore, by advancing the piston 20 by this hydraulic pressure, the inner pad 51 attached to the inner pad plate 50 is pressed against the disk 70 instantly. In addition, since the hydraulic pressure remains in the cylinder 11, the housing 10 itself, which is slidably fastened to the carrier 40 through the guide rod 30, moves in the opposite direction and is attached to the outer pad plate 60 by this. The outer pad 61 is pressed against the disk 70 and brakes.

When the brake pedal is released, the piston 20 is restored to its original position due to the elastic force of the seal 21, so that the disk 70 and the pads 51 and 61 are spaced apart by a predetermined distance, and the guide rod 30 also has the fastening groove 41. Insertion is restored inside.

When the brakes are braked, the pads 51 and 61 come into contact with the side surfaces of the rotating disk 70 and are pushed in the rotational direction of the disk 70 so that shear stresses are generated between the pad plates 50 and 60. do. Therefore, the pads 51 and 61 are gradually worn out due to friction with the disk 70 when the brake operation is repeated, and the pads 51 and 61 when the pads 51 and 61 have weak adhesive force between the pads 51 and 61 and the pad plates 50 and 60. ) Is also separated from the pad plates (50, 60).

That is, an adhesive (not shown) is applied to the inner surface of the pad plates 50 and 60, and the pads 51 and 61 made of heat-exchangeable resin, steel fibers, etc., as main components thereof are press-molded at high temperatures, and are subjected to excessive braking action. Due to the increase in shear stress, the pads 51 and 61 are separated from the pad plates 50 and 60.

The present invention is to solve this problem, the main purpose of the present invention is to rivet the pad plate so that its end extends to the pad to prevent the pad from being separated from the pad plate due to the shear stress caused by the braking action It is an object of the present invention to provide a pad plate of a disc brake that allows the driver to know when to replace the pad by causing friction and metal sounds between the side of the disc and the end of the rivet when the pad is over-weared.

1 is a plan sectional view showing a general disc brake.

Figure 2 is a plan sectional view showing a disk brake according to the present invention.

Figure 3 is a schematic cross-sectional view showing a pad plate according to the present invention in contact with the disk during the wear of the pad.

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

10. Housing 20. Piston 40 Carrier

70.Disk 600.Pad plate 610.Pad

800..Rivet 810..Installer

In the disc brake of the disc brake according to the present invention for achieving the above object, the disc brake having a disk rotating with the wheel, a pad plate is attached to the brake pad by friction with the side of the disk,

The pad plate is characterized in that the end portion is provided with a rivet that extends to a predetermined depth of the pad to suppress the pad from being pushed from the pad plate.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a plan sectional view schematically showing a disc brake according to the present invention. (The disc brake according to the present invention is the same as the conventional components except for the structure of the pad plate to which the pad is attached, so the same components will be briefly described using the same names and the same reference numerals.)

Disc brake according to the present invention is largely composed of a housing 10 in which the piston 20 is installed to move forward and backward, and a carrier 40 in which a pair of pad plates 500 and 600 are installed.

In the housing 10, the piston 20 moves forward and backward in the cylinder 11 by hydraulic pressure transmitted through the inlet 12. Reference numeral 13 is a fastening hole formed at both ends of the housing 10, 21 is a seal for restoring the piston.

Fastening grooves 41 are formed at both ends of the carrier 40, respectively, and one end of the guide rod 30 is fastened to the fastening hole 13 of the housing 10 by bolts 14 and the other of the guide rod 30. By inserting the end portion into the fastening groove 41, the housing 10 is slidably coupled to the carrier 40 fixed to the vehicle body (not shown).

In addition, the installation spaces 42 of the carrier 40 fixed to the vehicle body are provided with pad plates 500 and 600 having pads 510 and 610 in the longitudinal direction at the center thereof, and the pad plates 500 and 600 are pistons 20. The inner pad plate 500 is in contact with the outer pad plate 600, which is spaced apart at a predetermined interval. A portion of the pair of pad plates 500 and 600 is inserted thereinto to form a disk 70 that rotates together with a wheel (not shown) of the vehicle.

On the other hand, as a characteristic configuration of the present invention, a plurality of rivets 800 are coupled to the pad plates 500 and 600 to which the pads 510 and 610 are attached using an adhesive, and the rivet 800 is fixed to the pad plates 500 and 600. One end of the body extends to a predetermined depth of the pads 510 and 610 through the plurality of installation holes 810 drilled at intervals. That is, during the braking operation, the pads 510 and 610 are subjected to shear stress by friction with the disk 70. Since one end of the rivet 800 is embedded in the pads 510 and 610, the pad plate is rotated by the rotation torque of the disk 70. 500,600) is configured to be suppressed from being pushed in the plane.

The action of the disc brake according to the present invention configured as described above is as follows.

When the driver steps on the brake pedal (not shown) when the vehicle moves forward, hydraulic pressure is transmitted from the master cylinder (not shown) into the cylinder 11 through the inlet 12, and the piston 20 moves forward. Accordingly, a pair of pad plates 500 and 600 which are installed in the mounting groove 42 of the carrier 40 to move forward and backward are respectively moved forward, and the pads 510 and 610 attached thereto are rubbed with both side surfaces of the disk 70. This will cause a braking action. On the other hand, the outer pad plate 600 is friction with the disk 70 by sliding the housing 10 in the opposite direction by the hydraulic pressure remaining in the cylinder 11, the housing 10 and the carrier 40 is a guide rod 30 is coupled and slidable.

At this time, the pads 510 and 610 are subjected to shear stress by friction with the side surfaces of the rotating disk 70. That is, the pad plates 500 and 600 fixed according to the rotational torque of the disk 70 and the pads 510 and 610 attached thereto are subjected to shearing force, and thus, the pad plates 500 and 600 are attempted to slide. The end portions of the rivet 800 fixed to the pad plates 500 and 600 Since the pads 510 and 610 extend inside the pads 510 and 610, the pads 510 and 610 are prevented from sliding. As a result, the pads 510 and 610 are prevented from falling off, thereby improving reliability of the pad plates 500 and 600.

On the other hand, if the brake operation is repeated for a long time, the pads compressing the disks at both sides must be replaced because they are continuously worn out and the brake performance is deteriorated. As shown in FIG. 3, the pads are over-weared to a predetermined depth. During braking, the tip of the rivet is exposed to the outside, which causes friction with the side of the disk.

At this time, friction metal sound is generated due to the contact between the wheel and the rotating disc and the rivet, and the driver listens to the sound and recognizes the time to replace the pad, so a separate pad wear detection member needs to be installed. There will be no.

As described in detail above, the pad plate of the disc brake according to the present invention constituted a rivet extending to a predetermined depth of the pad.

Therefore, the pad and the pad plate are subjected to shear stress by the rotational torque of the disk during the braking action, and the pad is prevented from being pushed by the rivet, thereby preventing the pad from being separated. In addition, there is an advantage that there is no need to install a separate pad wear detection member by rubbing the tip of the rivet and the disk during the over-wear of the pad to generate a metal sound, and to recognize the driver.

Claims (2)

In the disk brake having a disk 70 that rotates with the wheel, the pad plate 600 is attached to the pad 610 for braking action by friction with the side of the disk 70, The pad plate 600 is provided with at least one rivet 800 whose end portion extends to a predetermined depth of the pad 610 to suppress the pad 610 from being pushed from the pad plate 600. Pad plate of disc brake to make. The pad plate of claim 1, wherein the rivet (800) is extended to the pad (610) through an installation hole (810) formed in the pad plate (600).