KR100774706B1 - A brake system for vehicles - Google Patents

Abstract

The present invention relates to a braking device for a vehicle. When the brake pedal operation sensor 81 detects the operation of the brake pedal 80, the electronic control unit 70 turns on the relay switch 60 to be provided in the caliper. By magnetizing the electromagnet 50 attached to the moving plate 30, the pad 40 attached to the moving plate 30 is brought into close contact with both sides of the disk 30 by the attraction force of the electromagnets 50 so that a braking force is generated. Consists of a structure.

Therefore, since the hydraulic and pneumatics are not used, the hydraulic and pneumatic line configuration, the booster, the master cylinder, the wheel cylinder, and the like do not need various devices, thereby simplifying the structure and reducing the weight.

In addition, by installing a rotary contact switch 90 in which contacts are intermittently contacted while the rotating plate 92 rotates, an anti-lock of a simple method consisting of supplying electric power to the electromagnet 50 intermittently during slipping of the wheel during braking. A brake system can be implemented.

Description

Brake system for vehicles

1 is a block diagram of a conventional vehicle braking device,

2 is a block diagram of a braking device according to the present invention;

Figure 3 is a block diagram showing the operation of the present invention.

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

10: hub, 20: disk,

30: moving plate, 40: pad,

50: electromagnet, 60: relay switch,

70: electronic control unit, 80: brake pedal,

81: brake pedal operation detection sensor, 90: rotary contact switch,

91: fixed plate, 91a: input electrode,

91b: output electrode, 92: rotating plate,

92a: conductor, 100: motor,

110: vehicle speed sensor, 120: wheel speed sensor.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a braking device for a motor vehicle, and more particularly, to a braking device for a motor vehicle capable of generating a braking force using an electromagnet and simply implementing an anti-lock brake system.

In general, as shown in FIG. 1, a brake device of a vehicle includes a booster 210 connected to a brake pedal 200, a master cylinder 220 connected to the booster 210, and the master cylinder 220. It is made of a structure connected to the wheel cylinder installed in the brake assembly of each wheel via a hydraulic pipe or hose 230 to the.

Therefore, when the driver presses the brake pedal 200, this force is boosted by the booster 210 to generate strong hydraulic pressure in the master cylinder 220, and the hydraulic pressure is applied to each wheel through the hydraulic pipe or the hose 230. It is transmitted to a wheel cylinder (caliper in the disk type) and converted into a physical pressing force to generate a braking force by bringing the shoe close to the drum or the pad close to the disk.

That is, since the hydraulic pressure is used to generate the braking force, the hydraulic line must be configured by the booster 210, the master cylinder 220, the hydraulic pipe or the hose 230, and the structure of the system becomes complicated and the weight of the vehicle increases. There was a problem such as being done.

This is the same problem that occurs in a braking system using pneumatics, such as in a large bus or truck.

In addition, in order to implement an anti-lock brake system (ABS) in the conventional braking device as described above, each wheel is locked so that the solenoid valve for bypassing the oil of the wheel cylinder when slip occurs, the oil bypassed through the solenoid valve A plurality of devices such as a buffer chamber to be stored, a pump for pumping oil in the buffer chamber into a silence chamber, a motor for operating the pump, and a silence chamber for linearly modifying a pressure in a pulse form sent by the pump. And, the structure of the braking device becomes more complicated because it is necessary to additionally install a hydraulic line connecting them.

Accordingly, the present invention has been made to solve the above problems, it is not necessary to install the existing hydraulic or pneumatic lines by generating a braking force by using an electromagnet simplifies the configuration of the braking device, the weight of the vehicle is reduced In addition, it is an object of the present invention to provide a braking device for a vehicle that can generate an intermittent braking force more simply, so that an additional application of a complicated configuration is not necessary to implement an antilock brake system.

The present invention for achieving the above object, the disk fixed to the hub of the axle, a pair of movable plates built in the caliper surrounding both sides of the disk, the pads attached to the disk corresponding surface of the movable plates and The brake switch is turned on when a brake pedal operation signal is input from an electromagnet attached to a corresponding outer surface of a disk of the moving plates, a relay switch for regulating a current supplied to the electromagnet, and a brake pedal operation detection sensor installed in the brake pedal. It consists of an electronic control unit.                     

In addition, a rotary contact switch connected to the electromagnet for intermittently supplying power and a motor for driving the rotary contact switch are added, and the motor is operated when a slip occurs in the wheel during braking by the electronic control unit. The electronic control unit is configured to determine whether slip has occurred in the wheel by receiving the vehicle speed and the wheel speed value from the vehicle speed sensor and the wheel speed sensor.

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

2 is a block diagram of a brake system for a vehicle according to the present invention, in which the disk 20 is mounted on a hub 10 of an axle, and a disk having calipers surrounding both sides of the disk 20 mounted on a knuckle. As applied to a disk type brake assembly, a pad is attached to pistons of a hydraulic cylinder (corresponding to a wheel cylinder for pushing a shoe to a drum in a drum type brake assembly). Although the braking force is generated by friction by being in close contact with both side surfaces of the disc 20, the caliper of the present invention is not provided with a hydraulic cylinder using hydraulic pressure or pneumatic pressure, but instead, there are both side portions of the disc 20 therein. A pair of moving plates 30, which are each positioned and reciprocate in a direction away from the direction toward the disk 20, is provided.

Pads 40 are attached to the surfaces of the movable plates 30 facing the disk 20, respectively, and electromagnets 50 are disposed on the outer portions of the disk 20, that is, the surfaces of the two movable plates 30 facing each other. The electromagnets 50 are attached to each other so that the opposite polarities are formed on the surfaces facing each other when the magnets are powered from the battery.

The electromagnets 50 are connected to the battery via a relay switch 60, the relay switch 60 is controlled on / off by the electronic control unit 70, the electronic control unit 70 is brake pedal Through the brake pedal operation detection sensor 81 installed on the (80) side, it is recognized whether the brake pedal 80 is operated.

On the other hand, the rotary contact switch 90 is connected to the electromagnet 50 in the same series as the relay switch 60 (parallel for the relay switch), all of which are circular and vision. Consists of a fixing plate 91 and a rotating plate 92 of the conductor, of which the input electrode 91a connected to the battery is installed in the center of the fixing plate 91 and the linear output electrode 91b in the radial direction is installed in the outer part. The output electrode 91b and the input electrode 91a are spaced apart from each other by a predetermined interval.

In addition, the rotating plate 92 is provided with a conductor (92a), the conductor (92a) is formed in a shape in which the central portion is integrally formed and a plurality of branches extending radially therefrom, each branch having the same distance from each other It is formed to have.

Here, the input electrode 91a, the output electrode 91b, and the conductor 92a are attached to the surfaces of the fixing plate 91 and the rotating plate 92 facing each other, and the fixing plate 91 and the rotating plate 92 are In close contact with each other, the center portion of the input electrode 91a and the conductor 92a are always in contact with each other, and the branch portion of the output electrode 91b and the conductor 92a can be intermittently contacted according to the rotational phase of the rotating plate 92. It is supposed to be.

In addition, a motor 100 for rotating the rotating plate 92 is provided, the motor 100 is operationally controlled by the electronic control unit 70.

The vehicle speed sensor 110 and the wheel speed sensor 120 are connected to the electronic control unit 70 so that the electronic control unit 70 receives the vehicle speed and the wheel speed value from them in real time, and compares these values. It is determined whether the wheel slips during braking. When the wheel slips, the relay switch 60 is turned off and the motor 100 performs a control action.

2 and 3, the operation of the present invention will be described.

When the driver brakes on the brake pedal 80 while the vehicle is driving, the brake pedal operation signal (pedal on) is input from the brake pedal operation detection sensor 81 to the electronic control unit 70, and the received electronic signal is transmitted. The control unit 70 connects the relay switch 60 to supply power of the battery B + to the electromagnet 50.

As a result, the electromagnet 50 is magnetized, and the two moving plates 30 are moved closer to each other by the attraction force generated between the electromagnets 50, where the pad 40 is the disk 30. By being in close contact with both sides of the braking force is generated it is possible to decelerate and stop the vehicle.

On the other hand, if a slip occurs in the wheel during braking, the electronic control unit 70 turns off the relay switch 60 to stop the continuous power supply to the electromagnet 50, and operates the rotary contact switch 90 to intermittently. The anti-lock brake action is achieved by supplying electric power to the generator to generate intermittent braking force.

That is, when the motor 100 is operated by the electronic control unit 70, the rotating plate 92 is rotated, and when the rotating plate 92 is rotated, the branch of the conductor 92a is connected to the input electrode of the fixing plate 91. Power is supplied to the electromagnet 50 at the time of connecting 91a and the output electrode 91b, and at the time when one of the conductors 92 cannot connect the input electrode 91a and output electrode 91b. As the supply of is stopped, the above connection and blocking action is repeated according to the rotation of the rotating plate 92 so that the electromagnet is discontinuously magnetized at a predetermined time interval, thereby providing an intermittent braking force between the disk 30 and the pad 40. It was supposed to occur.

As described above, according to the present invention, since the braking force is generated by rubbing the friction material using the electromagnet force without using hydraulic pressure or pneumatic pressure, the conventional hydraulic and pneumatic lines and various devices installed therein do not need to be installed. While the overall configuration of the device becomes very simple and the weight of the vehicle is reduced, the brake pedal is not used to generate hydraulic pressure in the present invention, but is simply used as a means for detecting that a brake is required. There is an effect of increasing the convenience of the driver because it can be operated with a smaller force (reduction of the brake pedal operation effort) without difficulty to operate the pedal.

In addition, even when applying the anti-lock brake system (ABS) to the basic braking device, it is possible to generate an intermittent braking force simply by adding a rotary contact switch without adding various devices or lines for ABS. Of course, this also has the effect of reducing the weight of the vehicle.                     

In addition, the anti-lock brake system as described above has the advantage that it can be installed in a large number of vehicles without a burden because the structure is simple as described above is less expensive to apply the actual vehicle.

Claims (3)

A disk 20 fixed to the hub 10 of the axle, a pair of movable plates 30 embedded in calipers surrounding both sides of the disk 20, and the movable plates 30 correspond to the disk 20. A pad 40 attached to the surface, an electromagnet 50 attached to the disk outer side corresponding surface of the moving plates 30, a relay switch 60 for controlling the current supplied to the electromagnet 50, and a brake Braking device of the vehicle comprising an electronic control unit (70) to turn on the relay switch 60 when the brake pedal operation signal is input from the brake pedal operation detection sensor (81) installed in the pedal (80). According to claim 1, The electromagnet 50 is connected to the rotary contact switch 90 is intermittently connected in parallel with the relay switch 60, the rotary contact switch 90 is connected to the vehicle speed sensor 110 A brake device for a vehicle, characterized in that the electronic control unit (70) is operated by operating the motor (100), which determines that the wheel is in a slip state by comparing the vehicle speed and the wheel speed value measured from the wheel speed sensor (120). According to claim 2, wherein the rotary contact switch 90 is composed of a non-conducting fixed plate 91 and the rotating plate 92, the fixed plate 91 is provided with an input electrode (91a) connected to the battery in the center and the outside The output electrode 91b is provided at a portion, and the rotating plate 92 has a central portion integrally formed therefrom, and a plurality of branches are formed in a radially extending shape, and the branches 92a are spaced apart at equal intervals. ) Is installed, and the rotating plate 92 is connected to the rotating shaft of the motor (100).

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