KR100380465B1 - Anti-blocking system apparatus with control motor - Google Patents

Abstract

The ABS device to which the control motor according to the present invention is applied is operated by the fluid pressure discharged from the master cylinder 50 when the brake pedal 40 is pressed, thereby rubbing the pair of left and right brake linings 14 and the brake drum 16. In the ABS device having a wheel cylinder 20 for braking the wheels 10, the outlet 22b of the wheel cylinder 20 is interrupted by a flow of brake fluid in the wheel cylinder 20 to be braked rapidly or at a high speed. The control motor assay 30 is installed through the chamber 100 to prevent the wheels from occurring during braking while driving. The control motor assay 30 is fixed to the outer bottom of the chamber 100 to provide rapid braking. The wheel cylinder 20 is fixed to the motor 32 driven by the signal of the control box 90 when braking during high speed or high speed, and fixed to the motor shaft 32a of the motor 32 in the chamber 100. Opening and closing of the outlet 22b It is characterized in that the control fan 34 is formed with a through hole 34a to control the pressure in the wheel cylinder 20 while alternately repeating, it is possible to significantly reduce vibration and noise, and increase vibration durability, By eliminating the electromagnet valve, pressure drop, etc. to be used, the manufacturing cost can be reduced by reducing the number of parts as well as simplifying the operation principle.

Description

ABS device applying control motors {ANTI-BLOCKING SYSTEM APPARATUS WITH CONTROL MOTOR}

The present invention relates to an ABS (Anti-blocking system) device to which a control motor of an automobile is applied. More specifically, the present invention relates to an ABS (Anti-blocking system) device. The present invention relates to an ABS device using a control motor that can prevent the locking occurring at the same time.

In general, the conventional ABS system (automatic braking force control device) that is widely used is classified into most wheel revolution sensors, electronic control systems, and hydraulic systems in the case of electromagnets. do.

Here, the wheel rotation speed sensor is installed on all wheels or propulsion shafts according to the structure of the ABS system to detect the rotation speed of the wheel, the detected rotation speed is input to the control system.

The electronic control system includes a microcomputer in most cases, and calculates a difference in the number of revolutions of each wheel during braking, and operates a hydraulic control device by determining whether it is in a slip state or an acceleration state.

For example, ABS will operate when the slip rate exceeds a certain limit. That is, the amount of slip generated and the amount of stored slip are compared to calculate the brake pressure required to obtain the maximum braking effect without the wheels sticking. The control system sends the necessary control commands to the magnet valve of the hydraulic system. . It also checks and monitors the operation of the entire system while driving.

The hydraulic device is connected to the original brake circuit, and each brake circuit includes an accumulator, a discharge pump, a magnet valve, a pressure drop, a pump, and a motor.

If a magnet valve is used, connect the magnet valve to the 3-way valve master cylinder, wheel brake and delivery pump. When the brake pedal is pressed, the brake fluid is initially supplied directly from the master cylinder, and when the wheel slip reaches a certain limit, the magnet valve shuts off the circuit connected to the wheel cylinder from the master cylinder so that the wheel cylinder brake fluid no longer rises. Try to stay at a certain level.

However, when the slip passes the threshold, the circuit of the wheel cylinder and the pressure drop are first connected to reduce the pressure on the wheel cylinder and the pump is operated again to return part of the brake fluid back to the master cylinder.

However, the conventional ABS device such as a wheel rotation speed sensor, an electronic control system, a hydraulic device, and the like has a large number of parts such as an electromagnet valve, a pressure drop, a pump, and the operation principle is complicated. The noise generated as well as the vibration of the electromagnet valve, there was a problem that greatly reduces the durability of the electromagnet valve and other components.

Therefore, the present invention has been made to solve the above problems, the object of the present invention is to replace the electromagnet valve with a control motor assay, significantly reducing vibration and noise, while increasing vibration durability, and at the same time eliminate the electromagnet valve, pressure drop, etc. In order to reduce the number of parts, simplify the operation principle, and reduce the process, such as to provide a ABS device with a control motor that can be down.

The ABS device to which the control motor according to the present invention made to achieve the above object is operated by the fluid pressure discharged from the master cylinder when the brake pedal is pressed to brake the wheels by rubbing a pair of left and right brake linings and brake drums. In the ABS device having a wheel cylinder, a control motor assay is installed at the outlet of the wheel cylinder through a chamber to prevent the wheels from occurring during rapid braking or braking during high-speed driving by controlling the flow of brake fluid in the wheel cylinder. The control motor assay includes: a motor fixed to an outer bottom of the chamber and driven by a signal of a control box when braking or braking during high-speed driving; and a wheel cylinder fixed to a motor shaft of the motor inside the chamber. While alternately repeating the opening and closing of the exit That is configured to control a fan with a through hole formed to control the pressure in the cylinder is characterized.

1 is a hydraulic circuit applied according to the present invention,

Figure 2 is a cross-sectional view showing a wheel cylinder and a control motor assay according to the present invention;

3 is a perspective view of a wheel cylinder according to the present invention;

4 is a perspective view showing a control motor assay according to the present invention.

Explanation of symbols on the main parts of the drawings

10: wheel 14: brake lining

16: brake drum 20: wheel cylinder

22b: Exit 30: Control Motor Assay

32: motor 32a: motor shaft

34: control fan 34a: through hole

40: brake pedal 50: master cylinder

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

As shown in FIG. 1, the ABS device to which the control motor according to the present invention is applied includes a wheel 10 having a speed sensor wheel 12, a pair of left and right brake linings 14, and a brake drum 16. And a wheel cylinder 20 installed at one side of the wheel 10 to operate the pair of left and right brake linings 14 and a lower portion of the wheel cylinder 20 to provide brake fluid in the wheel cylinder 20. The control motor assay 30 prevents the wheels from occurring during braking during high speed driving by intermittent flow, the master cylinder 50 reacting according to the operation of the brake pedal 40, and one side of the master cylinder 50. A first fluid pipe 60 connected between the stage and one end of the wheel cylinder 20 to allow the brake fluid in the master cylinder 50 to flow into the wheel cylinder 20 by the stepping force of the brake pedal 40; , The other end of the wheel cylinder 20 and the master cylinder (50) The second fluid pipe 62 is connected between the other end via the pump 70 to deliver the brake fluid in the wheel cylinder 20 to the master cylinder 50 by the operation of the pump 70, and the wheel ( 10 is installed on one side of the speed sensor 80 for detecting the rotation of the speed sensor wheel 12, and is installed between the speed sensor 80 and the control motor assay 30 speed sensor 80 Consists of a control box 90 to control the operation of the control motor assay 30 receives the signal detected by.

That is, the wheel cylinder 20 has a cylinder body 22 having an inlet 22a and an outlet 22b at the top and the bottom, as shown in FIGS. 2 and 3, and both sides of the cylinder body 22. It consists of a pair of left and right pistons 24 to push the brake lining 14 while simultaneously sliding outward by the hydraulic pressure in the wheel cylinder 20.

At this time, at least four outlets 22b are formed at regular intervals in the circumferential direction with respect to the center of the bottom bottom of the wheel cylinder 20.

In addition, at one side of the bottom of the wheel cylinder 20 with respect to the lower portion of the outlet 22b, an outlet 100a is connected to the second fluid pipe 62 and at the same time, the control motor assay 30 Chamber 100 is installed.

On the other hand, the control motor assay 30, as shown in Figure 4, the motor 32 is fixed to the outer bottom of the chamber 100 and circuitally connected to the control box 90, the chamber A motor shaft 32a which is penetrated into the interior of 100 and is rotated by receiving the power of the motor 32, and is fixed to the end of the motor shaft 32a in the chamber 100 so that the wheel cylinder 20 It is comprised by the control fan 34 in which the through-hole 34a was formed so that the pressure 22 in the wheel cylinder 20 may be controlled while repeating the opening and closing of the outlet 22b of ().

At this time, at least four through holes 34a are formed at predetermined intervals in a circumferential direction with respect to the plane thereof so as to correspond to the outlet 22b of the wheel cylinder 20. It is configured to be open in conformity with the outlet 22b of the wheel cylinder 20 or to be closed while being displaced from the outlet 22b.

Next, the operation and effect of the present invention configured as described above will be described.

When the brake pedal 40 is pressed down in FIG. 1, the brake cylinder in the master cylinder 50 moves along the first fluid pipe 60 while the master cylinder 50 connected to the brake pedal 40 is operated. A pair of left and right pistons 24, which are introduced through the inlet 22a formed in the cylinder body 22 of the 20, and are provided on both sides of the cylinder body 22 according to the pressure of the brake fluid introduced into the cylinder body 22. ), The left and right pair of brake linings 14 connected to the left and right pair of pistons 24 are opened to the outside while the pair of left and right brake linings 14 are connected to the brake drum 16. Contact and brake the rotation of the wheel (10).

At this time, the hydraulic pressure generated in the pump 70 is controlled by the master cylinder 50 while reacting when the driver presses the brake pedal 40, the hydraulic pressure in the wheel cylinder 20 is the control motor as shown in FIG. As controlled by the assay 30, the control motor assay 30 is driven according to the signal of the control box 90 to control the inflow of the brake fluid into the chamber 100.

That is, during braking, the speed sensor 80 installed on each wheel 10 detects the speed of the speed sensor wheel 12 installed on the wheel 10, and the detected signal is inputted to the control box 90. The slip amount is compared with the stored slip amount to determine whether the wheel is stuck.

Therefore, when the fixing of the wheel does not occur, the control box 90 does not give an input signal to the control motor assay 30, so that the outlet 22b of the wheel cylinder 20 and the motor of the control motor assay 30 The through holes 34a of the control fan 34 connected to the 32 are staggered, so that the brake fluid in the wheel cylinder 20 is blocked inside the chamber 100 as the outlet 22b of the wheel cylinder 20 is blocked. It will not flow into.

Then, the pressure in the wheel cylinder 20 is transmitted to the left and right pair of pistons 24 provided on both sides of the cylinder body 22 to expand the above-described brake lining 14 to the left and right pair of brake linings 14 and the brake drum. Friction is obtained by rubbing (16).

However, in case of braking during rapid braking or high-speed driving, wheel fixing occurs. In this case, the control box 90 gives a signal to the motor 32 to rotate the control fan 34 connected to the motor 32.

At this time, the outlet 22b of the wheel cylinder 20 and the through hole 34a of the control fan 34 alternately open and close for a short time so that the pressure in the wheel cylinder 20 increases and decreases repeatedly. Accordingly, as the pressure in the cylinder body 22 changes, the friction and loosening of the brake lining 14 and the brake drum 16 are repeated through the operation of a pair of left and right pistons 24 to effectively prevent the wheels from sticking. .

That is, the brake fluid introduced into the chamber 100 when the outlet 22b of the wheel cylinder 20 and the through hole 34a of the control fan 34 are opened may discharge the outlet 100a formed at one side of the chamber 100. Simultaneously discharged through the second fluid pipe 62 is transferred in the order of the pump 70 and the master cylinder 50.

Therefore, when the means for controlling the outlet 22b of the wheel cylinder 20 is adopted as the control motor assay 30 composed of the motor 32 and the control fan 34 instead of the conventional electromagnet valve, the number of parts can be reduced. In addition, the operation principle can be simplified to reduce the process, and by replacing the electromagnet valve with the control motor assay 30, the vibration and noise can be significantly reduced, and the durability degradation caused by the vibration can be prevented. It is.

As described above, the ABS device to which the control motor according to the present invention is applied has a structure in which a control fan rotated by the motor is installed so that the exit of the wheel cylinder can be repeatedly performed alternately between opening and closing. It can significantly reduce noise and increase vibration durability, and also reduce the number of parts by eliminating electromagnet valves, pressure drop, etc., and reduce the manufacturing cost by simplifying the operation principle.

Claims (3)

The wheel cylinder 20 is operated by the fluid pressure discharged from the master cylinder 50 when the brake pedal 40 is pressed, and brakes the wheel 10 by rubbing the pair of left and right brake linings 14 and the brake drum 16. In the ABS device having a), At the outlet 22b of the wheel cylinder 20, a control motor assay is performed through the chamber 100 so as to intercept the flow of the brake fluid in the wheel cylinder 20 to prevent the wheels from occurring during rapid braking or braking during high-speed driving. 30) is installed, The control motor assay 30, A motor 32 fixed to the outer bottom of the chamber 100 and driven by a signal from the control box 90 when braking or braking during high-speed driving; The pressure in the wheel cylinder 20 is fixed to the motor shaft 32a of the motor 32 in the chamber 100 while alternately repeating the opening and closing of the outlet 22b of the wheel cylinder 20. ABS device to which the control motor is applied, characterized in that the control fan 34 is formed with a through hole (34a) to control. The method of claim 1, The outlet device 22b and the through hole 34a are each provided with a control motor, characterized in that a plurality of spaced at intervals corresponding to each other on the bottom of the wheel cylinder 20 and the plane of the control fan 34, respectively. . The method of claim 1, The through hole (34a) is the ABS device to which the control motor is applied, characterized in that configured to open when the control fan (34) is rotated to coincide with the outlet (22b) or to be closed off the outlet (22b).