KR20030039690A - Brake pad abrasing display device in vehicle - Google Patents

Abstract

PURPOSE: A wear display apparatus of a brake pad for a vehicle is provided to indicate wear of the brake pad to a driver visually by converting pressure applied to a disk into electric energy in contacting to the disk. CONSTITUTION: A caliper covers a disk(500) rotating with a wheel of a vehicle, and generates braking force by receiving hydraulic pressure of a master cylinder in operating a brake pedal. The disk is pressed by a pad(400), and the pad is contained in a back plate(200). An indicator(201) is installed in the back plate, and inserted to the pad to alarm to a driver by generating electric energy in contacting to the disk. Wear of the pad is displayed visually to the driver by generating electric energy according to pressure from the disk in contacting the indicator to the disk, and the replacement time of the pad is indicated to the driver.

Description

Brake pad abrasing display device in vehicle}

The present invention relates to a wear indicator of a brake pad for a vehicle, and more particularly, to a wear indicator of a brake pad for a vehicle so that the driver can easily check the wear state of the pad.

In general, a caliper brake of a brake system for braking a vehicle has a structure in which a bracket having a brake pad device is installed on a disk of a wheel and a caliper 101 including a pad spring is installed thereon as shown in FIG. 1. Is made of.

Here, the caliper 101 is the inner and outer pad shim 300 and the indicator 201 is provided with a pad 400 surrounding the disk 500 while being sequentially coupled to each other as shown in Figures 2 and 3, 1) while the pad 400 is integrally housed in the back plate 200 is made.

The caliper brake device as described above has a piston 600 and an oil passage 700 in the caliper 101 to directly transfer the pressure of the master cylinder according to the operation of the brake pedal to the pad 400, wherein the cylinder oil passage ( 700 is installed inside or connected to the outside pipe (400) on both sides of the pad 400 is installed on the hub of the wheel (not shown in the figure) to press the brake disk 500 to rotate like a wheel to act as a brake do.

At this time, when the pad 400 that generates friction by pressing the brake disk 500 that rotates at a high speed is excessively worn due to long use, the gap between the pad 400 and the disk 500 increases and a piston ( The movement distance of 600 is also increased to increase the oil capacity in the caliper 101 (at this time, the oil in the oil storage tank is reduced by about 1 / 3-1 / 2 from the normal oil amount) and the disk 500 There is a problem that the braking performance is deteriorated because the friction force between the pad 400 to pressurize does not occur sufficiently.

Accordingly, as described above, the indicator 201, which is a pad wear limit indicator, is provided to know the wear level of the pad 400. When the wear of the pad 400 proceeds to a certain degree or more, the disk 500 comes into contact with the disk 500. Therefore, the noise generated by friction is notified to the driver. However, the noise generated by the friction with the disk 500 is almost impossible for the driver to be accurately recognized by the road noise, window noise, and engine noise generated by driving of the vehicle. Since this is impossible and the driver changes the pad depending on the mileage (about 10,000 km) of the vehicle, there is a problem in that the indicator 201 has little usability.

Accordingly, the present invention has been invented in view of the above points, and converts the pressing force exerted by the disk when the pad is worn into electrical energy so that the driver can know it from the driver's seat so that the driver can be visually informed whether or not the pad is worn. The purpose is to.

The present invention for achieving the above object, is provided so as to surround the disk to be rotated with the wheel is provided with the hydraulic pressure of the master cylinder in accordance with the operation of the brake pedal to receive a pad to press the disk caliper to generate a braking force An indicator is mounted on the back plate so as to be inserted into the pad to generate electrical energy upon contact with the disc, thereby warning the driver's seat.

1 is a block diagram of a brake assembly composed of a brake caliper having a pad friction with a general wheel

2 is an operating state diagram of FIG.

3 is a configuration diagram of a brake pad having a wear display device of a brake pad according to the related art.

4 is a configuration diagram of a wear display device of a brake pad according to the present invention;

5 is an operating state diagram of FIG.

<Description of the symbols for the main parts of the drawings>

101: caliper 200: back plate

201: indicator 202: case

203: ball 204: spring

205: power generator 206: indicator

300: pad shim 400: pad

500: Disc 600: Piston

700: oil passage

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

Figure 4 shows a block diagram of the wear indicator of the brake pad according to the present invention, the present invention is positioned so as to surround the disk 500 is rotated with the wheel while the hydraulic pressure of the master cylinder according to the operation of the brake pedal The indicator 500 is mounted on the back plate 200 in which the caliper 101 which receives and generates the braking force is inserted into the pad 400 to accommodate the pad 400 that presses the disk 500. When it comes into contact with electrical energy, it generates a warning mark in the driver's seat.

Here, the indicator 201 is continuously pressed toward the pad 400 by the case 202 mounted on the back plate 200 and one end of the spring 204 accommodated in the case 202, and thus the pad 400. The power generator 205 and the power generator 205 which generate electricity by receiving the pressing force through the ball 203 accommodated in the spring and the spring 204 compressed by the pressure of the disk 500 applied to the ball 203. It is composed of an indicator 206 provided in the driver's seat to operate by using the power generated in the) to inform the driver.

At this time, the power generator 205 is made of a Piezoelectric material (Piezoelctric Material) that generates a Piezo effect (Piezo effect) to release the charge by the pressure applied.

In addition, the indicator 206 is of course made of a buzzer that generates a lamp or alarm sound that is turned on.

On the other hand, the indicator 206 may use a parking brake of the vehicle, that is, by connecting the current generated from the power generator 205 to the lighting circuit of the parking brake, parking brake when a predetermined or more current signal is transmitted. Of course, when the lamp is turned on or the ECU senses the current of the power generator 205, a signal is generated to turn on the parking brake light.

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

According to the present invention, when the wear of the pad 400 is less than the reference, a normal friction force is generated between the pad 400 and the disk 500 to achieve braking according to the operation of the brake pedal. When the indicator 201 protrudes toward the pad 400 for a long time and comes into contact with the disk 500, a current generated by the pressure applied by the contact of the indicator 201 and the disk 500 is applied to the driver's seat. By operating the indicator 306 provided to let the driver to recognize the time of replacement of the pad 400, of course.

That is, when this is described in detail with reference to FIG. 5, when the wear of the pad 400 is severe and the indicator 201 accommodated in the pad 400 rubs with the disk 500 during the brake operation, the disk 400 is hydraulically directed toward the disk 500. The ball 203 of the indicator 201 comes into contact with the disk 500 by the back plate 200 having the pad 400 that is moved to compress the spring 204 with the repulsive force.

Subsequently, when the spring 204 is compressed, the power generator 205 fixed to the case 201 is compressed at the rear end thereof, thereby releasing charge to generate a current, and thus the current of the power generator 205 is displayed. Flowing to (206), a warning light or buzzer will be activated to inform the driver.

On the other hand, the power generator 205 connects the current generated by the pressure applied through the ball 203 and the spring 204 by the pressure with the disk 500 to the lighting circuit such as parking brake, so that the pad 400 The parking brake lamp is notified of the wear state through the lighting of the parking brake light, or the current of the power generator 205 is sensed by the ECU, and the control signal of the ECU is connected to the power circuit to the parking brake light to turn on the parking brake light to the driver. Of course, the pad 400 may be informed of the wear state.

As described above, according to the present invention, an indicator, which generates electric energy upon contact with a disk that rotates at a high speed with a wheel and gives a warning indication to the driver's seat, is inserted into the pad to stop the disk and applied from the disk as the pad wears. The electric force is generated through the pressing force and displayed in the driver's seat, which enables the driver to visually know whether or not the pad is worn.

Claims (6)

The caliper 101, which is positioned to surround the disk 500 that is rotated along with the wheels and receives the hydraulic pressure of the master cylinder according to the operation of the brake pedal, generates a braking force to accommodate the pad 400 for pressing the disk 500. Wear indicator of the brake pads for a vehicle made by mounting an indicator 201 to be inserted into the pad 400 to the back plate 200 to generate electrical energy upon contact with the disk 500 to give a warning indication to the driver's seat. The method of claim 1, wherein the indicator 201 is continuously pressed toward the pad 400 by the case 202 mounted on the back plate 200 and one end of the spring 204 accommodated in the case 202. A power generator 205 for generating electricity by receiving a pressing force through a ball 203 accommodated in the pad 400, a spring 204 compressed by the pressure of the disk 500 applied to the ball 203, and the same. Wear indicator of the brake pad for a vehicle, characterized in that consisting of an indicator 206 provided on the driver's seat to operate by using the power generated by the power generator 205 to inform the driver. 3. The wear indicator of a brake pad according to claim 2, wherein the power generator (205) is made of a piezoelectric material which generates a piezoelectric effect of releasing charge by an applied pressure. 3. The wear indicator of a brake pad of a vehicle according to claim 2, wherein the indicator (206) is made of a lamp which is turned on. 3. The wear indicator of a brake pad of a vehicle according to claim 2, wherein the indicator (206) is made of a buzzer for generating an alarm sound. 3. The wear indicator of a brake pad according to claim 2, wherein the indicator (206) is made of a parking brake which is turned on by a current generated by the power generator (205).