WO2011122772A2

WO2011122772A2 - Solenoid actuator for vehicle brake

Info

Publication number: WO2011122772A2
Application number: PCT/KR2011/001665
Authority: WO
Inventors: 박한문
Original assignee: 주식회사 호노공업
Priority date: 2010-03-29
Filing date: 2011-03-10
Publication date: 2011-10-06
Also published as: WO2011122772A3

Abstract

The present invention relates to a solenoid actuator for a vehicle brake, wherein the concentration of oil pressure is divided to flow to allow the smooth opening and closing operations of a main path through which the oil pressure flows. More specifically, the solenoid actuator for a vehicle brake is constantly supplied with power for blocking the main path to keep a device, which is driven by oil pressure, in a locked or stopped state, so that the oil pressure, which is supplied from the main path to a supply path, is prevented from flowing back to the main path again. In the vehicular brake solenoid actuator, a valve is provided such that the main path may be communicated with the supply path via a flow space; and a permanent magnet is attached with a sealing packing on the front surface thereof, and sequentially inserted into a cylindrical coupling member which is formed with a non-magnetic body at the front portion thereof and a magnetic body at the rear portion thereof so that the permanent magnet is supported by an elastic body. The non-magnetic body is coupled with an electromagnet at the outer circumferential surface thereof, so as to prevent pressure from being concentrated to the inside of the flow space and increasing when the oil pressure is supplied from a supply side to an operation side. Therefore, the main path may be smoothly opened and closed.

Description

Solenoid actuator for vehicle brake

The present invention relates to a solenoid actuator for a vehicle brake, and more particularly, to a solenoid actuator for a vehicle brake for smoothly opening / closing operation of a main flow path through which hydraulic pressure flows by dividing a flow of concentrated oil pressure.

In general, automobile brake systems are classified into main braking brakes and parking brakes, which are called foot brakes.

The main brake brake is used to slow down the vehicle or, in some cases, to stop quickly, and the parking brake is used to keep the vehicle parked or stopped, or to prevent the car from parking on a hill. Used when the main brake is not functioning properly.

On the other hand, in the case of the parking brake, the wire is operated by pulling the parking handle normally by hand, and the wire is operated by extending the brake shoe to contact the brake drum.

However, the parking brake is based on a mechanical method of extending the brake shoe by operating a wire as described above. In the case of a hill road or a loaded truck, the braking force is released due to the lower braking force than its own weight. The problem of driving on their own often occurs.

In order to solve this problem, according to the patent application No. 10-0502974, which has been filed in advance and registered by the present applicant, the hydraulic pressure generated in the tandem master cylinder when the brake pedal is operated is the front axle main hydraulic passage and the rear axle main shaft. A case which is configured to be braked by being transmitted to the brake shoes of the front and rear wheels through a hydraulic path, the inlet and the outlet being formed at positions opposite to each other, the case being connected in the middle of the front axle main hydraulic path or the rear axle main hydraulic path; A coil wound around the outer periphery of the case and generating an electric field when a current is input; An electromagnet embedded at an outlet side of the case and magnetized by an electric field generated from a coil; An actuator configured to move forward and backward in a central portion of the case so as to retreat by magnetic force of the former magnet, and a flow passage configured to allow the hydraulic pressure introduced to the inlet to flow to the outlet; The main spring interposed between the actuator and the electromagnet and the head of the valve shaft protruding to one side are inserted to be supported by the locking jaw of the insertion groove provided on the actuator, and interlocked during the forward and backward movement of the actuator to inlet the case. An on / off valve for opening and closing the valve to selectively supply hydraulic pressure to the brake shoe; It consists of a main switch that supplies the battery power to the coil by driving on / off according to the driver's operation.

As such, when the driver operates the main switch for driving, the brake device is configured to supply the power of the battery to the coil so that a predetermined electric field is generated from the coil, and the electromagnet installed inside the case is magnetized by the electric field to attract the actuator. Pulls are made to open / block the inlet and outlet.

As such, if power is constantly applied to the coil during driving or parking, heat is generated in the coil severely, which shortens the life of the valve and the coil, and also causes problems such as air bubbles flowing inside and deterioration. Is generated and there is a problem of brake malfunction.

In addition, when the coil is burned or the coil is disabled and the power is cut off, the actuator is pushed to the inlet side and the inlet is shut off so that the hydraulic pressure is cut off. Will be generated.

In addition, as the power is continuously applied, there is a problem of shortening the life of the battery and the life of the generetta.

In addition, there is a problem that the blocking function of the flow path is released when power is not supplied in a state in which a current is applied to the coil so that the actuator blocks the flow path.

In addition, there is a problem that the battery of the vehicle is easily discharged when the current is continuously supplied to the coil to operate the actuator applied to the parking brake of the vehicle.

Thus, it is possible to smoothly control the flow and blocking of the hydraulic pressure flowing to the brake shoe from the main flow path to generate and supply the hydraulic pressure, and to improve the opening and closing operation of the main flow path to ensure that the hydraulic pressure is not concentrated for the improved vehicle brake Solenoid actuators are urgently needed.

Accordingly, the present invention has been made in view of the problems of the prior art as described above, and when the hydraulic pressure is supplied from the supply side to the operating side, the hydraulic pressure is concentrated in the flow space to prevent the pressure from rising so that the opening and closing operation of the main flow path is smoothly performed. It is an object of the present invention to provide a solenoid actuator for a vehicle brake.

Another object of the present invention is to allow hydraulic pressure to flow to the supply flow path even when the main flow path is closed, and the supplied hydraulic pressure is not discharged by the check valve to maintain the operating state.

In addition, another object of the present invention is the sealing operation of the packing attached to the permanent magnet blocking the main flow path by the operation of the electromagnet to block the main flow path is maintained by the elastic force of the elastic body, the operation of the electromagnet to open the main flow path Therefore, the opening operation of the packing attached to the permanent magnet which opened the main flow path is to maintain the operation state as the contact point of the permanent magnet and the magnetic material.

In addition, another object of the present invention is to insert a thin plate between the permanent magnet and the elastic body so that the elastic force of the elastic body that is transmitted to the permanent magnet can be received more.

In order to achieve the above object, the present invention provides a main flow path to maintain the locked or stopped state of the device driven by the hydraulic power is always supplied to prevent the hydraulic pressure supplied from the main flow path to the main flow path to flow back to the main flow path In the solenoid actuator for a vehicle brake to block the, the valve is configured such that the main flow path and the supply flow path communicates through the flow space, the front of the non-magnetic material, the rear of the cylindrical fastening member to form a magnetic body is sealed sealing The permanent magnets attached to the front surface are sequentially inserted to be supported by the elastic body, and the electromagnet is coupled to the outer circumferential surface of the nonmagnetic material; When the N-pole or S-pole is generated by operating the electromagnet in a state in which hydraulic pressure is supplied in the order of the main passage, the flow space, and the supply passage, the sealing packing is the main passage by the repulsion of the N pole or the S pole of the permanent magnet. And blocking the current to the electromagnet to pressurize the permanent magnet by an elastic body to maintain the blocking state of the main channel to prevent the discharge of hydraulic pressure supplied to the supply channel, and change the current direction of the electromagnet. When the S-pole or N-pole is generated, the elastic body is pressed by pulling the N-pole or S-pole of the permanent magnet, and the permanent magnet is in contact with the magnetic body to open, and the contact between the permanent magnet and the magnetic body is not supplied with current. Maintaining the open state of the main flow path so that the hydraulic pressure supplied to the supply flow path is configured to open so as to flow into the main flow path solenoid It provides a working body.

As described above, when the hydraulic pressure is supplied from the supply side to the operating side, the hydraulic pressure is concentrated in the flow space to prevent the pressure from rising and thus the opening and closing operation of the main flow path is smoothly performed.

And, even when the main flow path is closed, the hydraulic pressure may be flowed to the supply flow path side, and the supplied hydraulic pressure is not discharged by the check valve, thereby maintaining the operating state.

In addition, the sealing operation of the packing attached to the permanent magnet which blocked the main flow path by the operation of the electromagnet to block the main flow path is maintained by the elastic force of the elastic body, and the permanent opening of the main flow path by the operation of the electromagnet to open the main flow path The opening operation of the packing attached to the magnet has the effect of maintaining the operating state as a contact between the permanent magnet and the magnetic material.

In addition, by inserting a thin plate between the permanent magnet and the elastic body there is an effect that the elastic force of the elastic body to be transmitted to the permanent magnet can be received larger.

1 is an exploded perspective view of a solenoid actuator for a vehicle brake according to the present invention;

2 is a combined perspective view of a vehicle brake solenoid actuator according to the present invention;

3 is a longitudinal sectional view of the state operated to open the main flow passage in FIG.

4 is a cross-sectional view of an operating state of closing the main flow path in the state of FIG. 3;

5 is an enlarged cross-sectional view of the open state of part A and a closed state enlarged cross-sectional view of part B of FIG.

FIG. 6 is a longitudinal cross-sectional view of the main channel opened in another embodiment in which a connection channel having a check valve installed between the main channel and the supply channel is formed;

7 is an operation cross-sectional view showing a closed state in the open state of the main flow path of FIG.

8 is an enlarged cross-sectional view of the open state of the portion C in FIG.

9 is a cross-sectional view of the solenoid actuator according to the present invention,

10 is a cross-sectional view showing a state in which the solenoid actuator according to the present invention closes the flow path by an electromagnetic field;

11 is an operation cross-sectional view showing a state in which the solenoid actuator according to the present invention opens the flow path by the electromagnetic field,

12 is an exemplary operation diagram in which the solenoid actuator according to the present invention is applied to an electric circuit.

1: Main Euro 2: Supply Euro

3: connection passage 4: check valve

10: valve 11a: spiral fastening

21: nonmagnetic material 22: magnetic material

23: cylindrical fastening member 24: sealed packing

25 permanent magnet 26 elastic body

27: electromagnet 27a: metal core

27b: coil 27c: case

28: elastic force control plate

1100: opening and closing operation unit 110: the first permanent magnet

120: nonmagnetic material 130: second permanent magnet

140: shielding member 200: case

210: coil 220: magnetic material

100,100b: Solenoid actuator

The preferred embodiment of the present invention as described above will be described in detail based on the accompanying drawings.

As shown in Figures 1 to 3, the vehicle brake solenoid actuator of the present invention to prevent the hydraulic pressure supplied from the main passage (1) to the supply passage (2) to flow back to the main passage (1) The present invention relates to a solenoid actuator for a vehicle brake that cuts off the main flow path 1 so that a device driven by hydraulic power is always locked or stopped.

At this time, the valve 10 is configured such that the main flow passage 1 and the supply flow passage 2 communicate with each other via the flow space 11.

Here, the valve 10 has a '┬' shape in the present invention, the main flow passage 1 is supplied with hydraulic pressure on one side, the supply flow passage 2 is formed on the other side.

That is, the main flow passage 1 is exposed to the flow space 11, the supply flow passage 2 is formed in communication with the flow space 11, the spiral fastening 11a to form the flow space 11 ) Is formed.

In addition, a non-magnetic material 21 is formed at the front and a cylindrical fastening member 23 at which the magnetic material 22 is formed at the rear.

At this time, the nonmagnetic body 21 of the cylindrical fastening member 23 is helically fastened to the helix fastening 11a of the valve 10 to form a flow space (11).

The permanent magnet 25 having the sealing packing 24 attached to the front side of the cylindrical fastening member 23 is sequentially inserted to be supported by the elastic body 26.

At this time, the sealed packing 24 and the permanent magnet 25 is attached to each other to be integrally coupled to each other, the elastic body 26 is composed of a coil spring form is compressed and restored by the elastic force.

That is, the elastic body 26 is first inserted into the cylindrical fastening member 23, and then the permanent magnet 25 having the sealed packing 24 is inserted to press the elastic body 26.

In addition, the electromagnet 27 is coupled to the outer circumferential surface of the nonmagnetic material 21 so as to generate the same polarity or a different polarity as that of the magnetic pole of the permanent magnet 25 in proximity to the electromagnet 27 by changing the direction of the current. It is.

In addition, the electromagnet 27 has a cylindrical shape that is fitted to the cylindrical fastening member 23, the outside of the coil 27b wound around the outer side of the metal core (27a) located in the center side of the plastic case (27c) Form wrapped around.

As shown in FIG. 6, in another embodiment, the main flow path 1 and the supply flow path 2 are connected to each other by a connection flow path 3.

At this time, a check valve (4) is installed in the connection passage (3) to block the flow of hydraulic flow from the main passage (1) to the supply passage (2) and from the supply passage (2) to the main passage (1). Configure.

That is, the main oil passage 1 is configured to be configured so that the hydraulic pressure is not excessively concentrated in the flow space 11 by splitting and supplying the hydraulic pressure through the flow space 11 and the connection flow passage 4.

In addition, the solenoid actuator 100 is configured to adjust the elastic force of the elastic body 26 to pressurize the permanent magnet 25 by detaching the elastic force adjusting plate 28 between the permanent magnet 25 and the elastic body 26. To complete.

In another embodiment, as shown in Figure 9, the solenoid actuator of the present invention is a power source to prevent the hydraulic pressure supplied from the main flow path (1) to the supply flow path (2) to flow back to the main flow path (1) Regarding the solenoid actuator for blocking the main flow path (1) so that the device is always hydraulically driven to maintain the locked or stopped state, the nonmagnetic material 120 is attached to the rear of the first permanent magnet (110), Coupled to the rear of the non-magnetic material 120 and attached to the first permanent magnet 110 and the second permanent magnet 130 of the opposite magnetic position to form the opening and closing operation unit 1100, the opening and closing operation unit ( The coil 210 is wound around the outer circumferential surface of the 1100 to constitute the solenoid actuator 100b.

In this case, the hydraulically actuated driving device may be applied to a parking brake of a vehicle, a hydraulic device, an industrial machine, a processing machine which is operated by being supplied with hydraulic pressure or electricity, and may perform hydraulic pressure blocking or electrical blocking function. An example is a device.

First, the opening and closing operation unit 1100 attaches the nonmagnetic material 120 to the S pole or the N pole end of the first permanent magnet 110 arranged in the order of S pole or N pole and N pole or S pole.

Then, the second permanent magnet 130 is attached to the rear of the other end of the nonmagnetic material 120 in the order of the north pole or the south pole and the south pole or the south pole.

In addition, the first permanent magnet 110, the nonmagnetic material 120, the second permanent magnet 130 is formed by attaching a fixing case 150 for wrapping and fixing the outer peripheral surface.

On the other hand, on the case 200, which is spaced apart from the outer circumferential surface of the opening and closing operation unit 1100 wrapped around the coil 210 receives the positive (+), the negative (-) power, both ends of the case 200 The magnetic body 220 is attached to it.

The case 200 is coupled to a hydraulic body case (not shown) for closing the main flow passage 1 and the supply flow passage 2.

That is, when power is supplied to the coil 210 and an electromagnetic field is generated around the opening / closing operation unit 1100, the magnetic body 220 of the case 200 located at the N pole or the S pole side of the first permanent magnet 110 is provided. N-pole or S-pole or S-pole or N-pole magnet is produced.

In addition, the magnetic body 220 of the case 200 located on the S pole or the N pole side of the second permanent magnet 130 generates magnets of the N pole or the S pole or the S pole or the N pole to open and close the operation unit 1100. Will be configured to work on either side.

In addition, the opening and closing operation unit 1100 is configured to maintain the operated state even if the power to the coil 210 in the operated state.

In addition, the S pole or the N pole end of the first permanent magnet 110 or the second permanent magnet 130 may be attached to the shield member 140 to block the main flow path (1).

Here, the shielding member 140 may be formed of an elastic soft synthetic resin material or Teflon material to increase the blocking sealing force of the main flow path (1).

As shown in FIG. 10, when power is supplied to the coil 210 and an electromagnetic field is generated around the opening / closing operation unit 1100, the case 200 located on the N pole or the S pole side of the first permanent magnet 110. The magnetic body 220 of the N pole or S pole is generated magnetic.

In addition, the magnetic pole 220 of the case 200 located on the S pole or the N pole side of the second permanent magnet 130 generates an N pole or S pole magnet so that the opening / closing operation unit 1100 moves toward the main flow path 1. The main passage 1 is closed by the shielding member 140 along with the movement so that the hydraulic pressure supplied to the supply passage 2 does not flow.

As shown in FIG. 11, when the positive and negative polarities of the power are supplied to the coil 210, when the electromagnetic field is generated around the opening / closing operation unit 1100, the N of the first permanent magnet 110 may be used. The magnetic pole 220 of the case 200 located on the pole or S pole side generates the S pole or the N pole magnet.

In addition, an S pole or an N pole magnet is generated at the end of the case 200 located at the S pole or the N pole side of the second permanent magnet 130 so that the opening and closing operation unit 1100 moves away from the main flow path 1. The shielding member 140 opens the main flow passage 1 so that the hydraulic pressure flows into the supply flow passage 2.

Here, the opening and closing operation unit 1100 is configured to maintain the operated state even if the power supply to the coil 210 for blocking or opening of the main flow path (1).

Referring to the operation and operation of the present invention configured as described above are as follows.

As shown in Figures 1 to 3, the assembly of the solenoid actuator 100 is located on the hydraulic tank side not shown in the drawing, the main flow path (1) to the operating part to supply the hydraulic pressure to the operation side. Position the supply line 2 to install the valve 10.

Thereafter, the elastic member 26 is first inserted into the spiral fastening 11a of the valve 10, and then the cylindrical fastening member inserted such that the permanent magnet 25 having the sealed packing 24 is in contact with the elastic member 26. Tighten (23).

Next, the electromagnet 27 is fitted to the outer circumferential surface of the nonmagnetic material 21 constituting the cylindrical fastening member 23.

In addition, a nut is provided to prevent the electromagnet 27 and the cover 29 from being separated from the rear of the cylindrical cover 29 fitted to the cylindrical fastening member 23 so as to surround the rear of the combined electromagnet 27. (29) is screwed to complete the solenoid actuator (100).

Thus, the completed solenoid actuator 100 will be described by way of example applied to the parking brake of the vehicle as an example according to the intended use in the present invention.

Here, if the parking brake device of the vehicle will be described briefly, the hydraulic pressure generated in the tandem master cylinder not shown in the drawing during the parking brake operation is transmitted to the brake shoe and braked.

In addition, when the operation of the solenoid actuator 100 is performed, the hydraulic pressure generated from the tandem master cylinder is transmitted to the brake shoe when the parking brake is operated when the vehicle is turned on or off, and the hydraulic force is operated so that the axle does not rotate. Let's do it.

That is, when electric power is supplied to the electromagnet 27 of the solenoid actuator 100 from the vehicle battery, an electromagnetic field is generated and N poles, S poles, S poles, or N poles are generated at both ends of the metal core 27a.

As shown in FIGS. 4 and 5, when the solenoid actuator 100 is installed and the brake of the vehicle is operated, the hydraulic pressure is in the order of the main flow passage 1, the flow space 11, and the supply flow passage 2. Supplied by flow.

At this time, the permanent magnet 25 in the state in which the main flow path 1 is opened maintains the magnetic contact with the magnetic body 22.

In this state, when the current is supplied to the electromagnet 27, an N pole or an S pole is generated at one end close to the permanent magnet 25 of both ends of the metal core 27a.

At the same time, the sealing packing 24 moves forward to block the main flow path 1 due to the same magnetic polarity generated by the electromagnet 27 and the repulsion of the N pole or the S pole of the permanent magnet 25.

As a result, the permanent magnet 25 blocks the main channel 1 more closely by the elastic force of the elastic body 26 to increase the sealing force.

In addition, the main flow path 1 is closed so that the hydraulic pressure is blocked to flow to the supply flow path 2 and the hydraulic pressure supplied to the supply flow path 2 side is also in a state in which discharge is blocked.

At this time, even if the electric current is interrupted to the electromagnet 27, the permanent magnet 25 is pressurized by the elastic body 26 so that the sealed packing 24 maintains the blocking state of the main channel 1 and supplies it to the supply channel 2. It is to prevent the discharge of the hydraulic pressure.

That is, the hydraulic pressure is not discharged from the supply flow path 2 side, the brake shoe is locked, and the brake operation is performed.

On the contrary, in order to release the locking of the brake, the current direction of the electromagnet 27 is converted and operated to generate the S pole or the N pole.

At this time, the elastic body 26 is moved backward while pressing the N pole or the S pole of the permanent magnet 25 by the electromagnet 27.

Thus, the permanent magnet 25 is in contact with the magnetic body 22 is in a state of opening the main flow path (1).

Here, even when the current is not supplied to the electromagnet 27, the main channel 1 is maintained in an open state as a contact between the permanent magnet 25 and the magnetic body 22.

Then, the hydraulic pressure supplied to the supply flow passage 2 is opened to flow to the main flow passage 1, so that the locking of the locked brake shoe is released.

As shown in FIG. 7 and FIG. 8, when the check valve 4 is installed in the connection flow path 3, when the main flow path 1 is closed by the sealed packing 24, the hydraulic pressure flows into the flow space 11. However, the pressure of the check valve (4) is pushed by the hydraulic pressure and flows to the supply flow path (2) in a small amount, but when the hydraulic pressure is filled in the brake shoe, the hydraulic pressure is no longer supplied and the main flow path (1) by the check valve (4). The connection flow path 3 connected to the side is blocked.

On the other hand, when the check valve (4) is installed in the connecting flow path (3) flows through the flow space 11 to the supply flow path (2) at the same time push the check valve (4) by the pressure of the hydraulic supply flow path (2) By supplying the hydraulic pressure in the), the hydraulic pressure is not excessively concentrated in the flow space 11, so that the permanent magnet 25 and the sealed packing 24 may be smoothly operated during the operation of the electromagnet 27.

As another embodiment, as shown in Figures 9 to 11, the solenoid actuator (100b) in the present invention will be described by way of example applied to the parking brake of the vehicle as an example.

In addition, when the operation of the solenoid actuator 100b is performed, the hydraulic pressure generated from the tandem master cylinder is transmitted to the brake shoe when the parking brake is operated when the vehicle is turned on or off, and the hydraulic force is operated so that the axle does not rotate. Let's do it.

That is, when power is supplied from the vehicle battery to the coil 210 of the solenoid actuator 100b, an electromagnetic field is generated over the entire case 200, and the magnetic pole 220 is opposite to the N pole or the S pole or the S pole. Or the north pole is generated.

At this time, the magnetic pole 220 located on the S pole or the N pole side of the first permanent magnet 110 of the magnetic body 220 coupled to both ends of the case 200, while the S pole or the N pole is generated, the second N-pole or S-pole is generated in the magnetic body 220 located on the S-pole or N-pole side of the permanent magnet 12.

Thus, the opening and closing operation unit 1100 is the first permanent magnet 110 located in the S pole or N pole having the same polarity as the magnetic pole 220 is located on the first permanent magnet 110 side is the main At the same time, the second permanent magnet 130 having the S pole or the N polarity opposite to the N pole or the S pole of the magnetic body 220 positioned on the side of the second permanent magnet 12 is pushed toward the flow path 1 side. (1) It is pulled to the side and moves.

That is, the opening and closing operation unit 1100 moving toward the main flow passage 1 closes the main flow passage 1 by the shielding member 140 so that the flow from the supply flow passage 1 to the main flow passage 1 becomes impossible. .

At this time, even when the power supply to the coil 210 is cut off due to the discharge of the battery of the vehicle, the operation force for opening the main flow path 1 is lost by moving the opening and closing operation unit 1100 to the rear, whereas the opening and closing operation unit ( The shielding member 140 of the 1100 maintains the shielding state of the main flow path 1, so that the hydraulic force supplied to the brake shoe is not changed, so that the brake operation is not released.

In addition, when the brake pedal 204 is released, the polarity of the power is supplied to the coil 210 so that the electromagnetic field is generated throughout the case 200, and the magnetic pole 220 is opposite to the N pole or S. The pole, S pole or N pole is produced.

At this time, the magnetic pole 220 located on the S pole or the N pole side of the first permanent magnet 110 of the magnetic body 220 coupled to both ends of the case 200, while the N pole or the S pole is generated, the second The magnetic pole 220 located at the S pole or the N pole side of the permanent magnet 12 generates the S pole or the N pole.

Thus, the opening and closing operation unit 1100 is the first permanent magnet 110 located in the N pole or S pole having a polarity opposite to the S pole or N pole of the magnetic body 220 located on the first permanent magnet 110 side is the main The second permanent magnet 130 having the same polarity as that of the north pole or the south pole of the magnetic body 220 positioned on the second permanent magnet 12 and at the same time opposite to the flow path 1 and having the north pole or the south pole S polarity. Is moved to the opposite side of the main flow path (1).

As shown in FIG. 12, the driving device operating by electricity is connected to the shielding member 140 so as to switch the power supply ON / OFF to the front and rear movement operation of the opening and closing operation unit 1100. Applicable to devices capable of supplying / disconnecting power.

As shown in FIGS. 9 to 12, the opening and closing operation unit 1100 supplies only the initial power to the coil 210 to generate an operating force for shielding the main channel 1, and then cuts off the power even if the main channel is turned off. The hydraulic pressure of the brake shoe is not released by permanently shutting off (1).

At this time, even if the power is cut off to the coil 210, the reason why the opening and closing operation unit 1100 can maintain the moving operation to one side is that the magnetic force of the first permanent magnet 110 or the second permanent magnet 130 is Affected by the magnetic material 220 will be able to maintain the operation while being pulled.

On the other hand, the main passage 1 can be blocked by the opening and closing operation unit 1100 only by the initial power, but when the parking brake is released, the shielding member 140 opens the main passage 1 so that normal brake operation is performed. do.

In addition, the power supply to the coil 210 is not continuously supplied in order to generate an operating force for continuously shielding the main flow path 1, thereby preventing degradation of the coil 210 and increasing durability, thereby reducing the failure rate. The cost will be less.

Thus, when the car is parked in a particularly inclined place, the operating hydraulic force of the brake shoe does not change and thus the brake is not released, thereby preventing driving of the car and preventing safety accidents.

In addition, when the parking brake is operated to operate the brake function for a long time, it is unnecessary to continuously supply battery power to the coil 210 to shield the main flow path 1, thereby preventing the discharge of the battery.

In the above, the present invention has been illustrated and described with reference to specific preferred embodiments, but the present invention is not limited to the above-described embodiments and is not limited to the spirit of the present invention. Various changes and modifications can be made by those who have

The present invention is to divide and flow the concentration of the hydraulic pressure of the solenoid actuator for the vehicle brake is to facilitate the opening and closing operation of the main flow path for the hydraulic flow.

Claims

In order to prevent the hydraulic pressure supplied from the main flow passage 1 to the supply flow passage 2 to flow back into the main flow passage 1, the main flow path is always supplied with power to maintain the locked or stopped state of the hydraulically driven device. In the solenoid actuator for vehicle brake to block 1),

A valve 10 is configured to communicate with the main flow passage 1 and the supply flow passage 2 via the flow space 11.

The permanent magnet 25 having the sealing packing 24 attached to the front side is sequentially supported by the elastic body 26 in the front of the cylindrical fastening member 23 in which the nonmagnetic material 21 is formed at the front and the magnetic body 22 at the back. Is inserted into, by combining the electromagnet 27 to the outer peripheral surface of the nonmagnetic material 21;

In the state in which the hydraulic pressure is supplied in the order of the main flow path 1, the flow space 11, the supply flow path 2 by fastening the cylindrical fastening member 23 to the flow space 11 of the valve 10, When the N pole or the S pole is generated by operating the electromagnet 27, the sealing packing 24 blocks the main flow path 1 due to the repulsion of the N pole or the S pole of the permanent magnet 25, and the electromagnet Even if the current is blocked by the 27, the permanent magnet 25 is pressurized by the elastic body 26 so that the sealed packing 24 maintains the blocking state of the main flow passage 1 to discharge the hydraulic pressure supplied to the supply flow passage 2. Prevent,

By converting the current direction of the electromagnet 27 to produce an S pole or an N pole, the elastic body 26 is urged by pulling the N pole or the S pole of the permanent magnet 25 and the permanent magnet 25 to the magnetic body 22. ) Is contacted and opened, and maintains the open state of the main flow path (1) as a contact between the permanent magnet 25 and the magnetic material 22, even if the current is not supplied to the electromagnet (27) is supplied to the supply flow path (2) Solenoid actuator for a vehicle brake, characterized in that configured to open so that the hydraulic pressure flows to the main flow path (1).
The method according to claim 1, wherein the main flow path (1) and the supply flow path (2) are connected to each other by a connection flow path (3),

A check valve 4 is installed in the connection passage 3 to block the flow of hydraulic flow from the main passage 1 to the supply passage 2 and from the supply passage 2 to the main passage 1. ,

The vehicle characterized in that the hydraulic flow is configured so that the hydraulic pressure is not excessively concentrated in the flow space 11 by splitting and supplying the hydraulic pressure through the flow space 11 and the connection flow passage 4 in the state in which the main flow passage 1 is opened. Solenoid actuator for brakes.
The method of claim 1, wherein the permanent magnet 25 and the elastic body 26 between the elastic force adjusting plate 28 is mounted to adjust the elastic force of the elastic body 26 to press the permanent magnet 25 by mounting. Solenoid actuator for vehicle brakes.
In order to prevent the hydraulic pressure supplied from the main flow passage 1 to the supply flow passage 2 to flow back into the main flow passage 1, the main flow path is always supplied with power to maintain the locked or stopped state of the hydraulically driven device. In the solenoid actuator blocking 1),

The non-magnetic material 12 is attached to the S-pole or the N-pole rear of the first permanent magnet 11 arranged in the order of S-pole or N-pole and N-pole or S-pole, and behind the other end of the non-magnetic body 12. A second permanent magnet 13 attached to the N pole or the S pole and the S pole or the N pole in order is attached to the outer peripheral surface of the first permanent magnet 11, the nonmagnetic material 12, and the second permanent magnet 13. Attaching the fixing case 15 for wrapping and fixing to configure the opening and closing operation unit 10,

The coil 21 receiving the positive (+) and the negative (-) power is wound on the case 20 wrapped around the outer circumferential surface of the opening and closing operation unit 10, and magnetic materials 22 are formed at both ends of the case 20. By attaching)

When power is supplied to the coil 21 and an electromagnetic field is generated around the opening / closing operation unit 10, the magnetic pole 22 of the case 20 located on the N pole or S pole side of the first permanent magnet 11 is N pole. Alternatively, the magnetic pole of the S pole, the S pole, or the N pole is generated, and the magnetic body 22 of the case 20 located on the S pole or the N pole side of the second permanent magnet 13 has an N pole, an S pole, or an S pole, or Solenoid actuator, characterized in that the magnetic pole of the N pole is generated to configure the opening and closing operation unit 10 to operate on either side.
5. The solenoid actuator according to claim 4, wherein the opening and closing operation unit (10) is configured to maintain the operated state even when the power to the coil (21) is cut off in the operated state.
5. The solenoid actuator according to claim 4, wherein a shielding member (14) is attached to an end of the S pole or the N pole of the first permanent magnet (11) or the second permanent magnet (13).
7. The solenoid actuator according to claim 6, wherein the shielding member (14) is formed of an elastic soft synthetic resin material or a Teflon material to increase the blocking sealing force of the main flow path (1).