KR20090037018A - Solenoid valve for brake system - Google Patents

Solenoid valve for brake system Download PDF

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Publication number
KR20090037018A
KR20090037018A KR1020070102373A KR20070102373A KR20090037018A KR 20090037018 A KR20090037018 A KR 20090037018A KR 1020070102373 A KR1020070102373 A KR 1020070102373A KR 20070102373 A KR20070102373 A KR 20070102373A KR 20090037018 A KR20090037018 A KR 20090037018A
Authority
KR
South Korea
Prior art keywords
sleeve
orifice
opening
closing
valve
Prior art date
Application number
KR1020070102373A
Other languages
Korean (ko)
Inventor
이충재
Original Assignee
주식회사 만도
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 만도 filed Critical 주식회사 만도
Priority to KR1020070102373A priority Critical patent/KR20090037018A/en
Publication of KR20090037018A publication Critical patent/KR20090037018A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
    • B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
    • B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
    • B60T8/363—Electromagnetic valves specially adapted for anti-lock brake and traction control systems in hydraulic systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/029—Electromagnetically actuated valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves
    • F16K31/0658—Armature and valve member being one single element
    • F16K31/0662—Armature and valve member being one single element with a ball-shaped valve member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Fluid Mechanics (AREA)
  • Power Engineering (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

A solenoid valve for brake system is provided to reduce the number of components and simplify the configuration whereby the part of the sleeve is installed to enter the inside of the modulator block and the valve seat member having a first orifice is installed within the sleeve. A solenoid valve for brake system comprises a cylindrical sleeve(10) entering a bore(101) inside a modulator block(100), a valve seat member(12) which is installed inside the sleeve and has a first orifice(13), a valve core(40) combined in the sleeve at the opposite side of the valve seat member, an opening and closing member(20) which is installed inside the sleeve, and includes an inner path(21), a second orifice(22), and a first opening and closing part(23), an armature(30) which is installed inside the sleeve and equipped with a second opening and closing part(31) for opening and closing the second orifice, a return spring(70) forcing the armature toward the second orifice, an opening spring(24) moving the opening and closing member toward the armature, and an oil path(11) connected to the sleeve in the radial direction.

Description

Solenoid Valve for Brake System {SOLENOID VALVE FOR BRAKE SYSTEM}

The present invention relates to a solenoid valve for a brake system, and more particularly to a solenoid valve for a brake system that can be easily manufactured and the manufacturing cost can be reduced.

The vehicle's anti-lock brake system senses the wheel's slip and controls the braking pressure on the wheel to prevent the wheel from locking up during braking. Safe braking is achieved by keeping the wheels directional without braking.

The brake system includes a plurality of solenoid valves for opening and closing the flow path of the brake hydraulic line. The solenoid valves employed in the brake system include a normally open solenoid valve that normally maintains an open state, and a normally closed solenoid valve that normally maintains a closed state.

Figure 1 shows a conventional normal closed solenoid valve. The valve is coupled to a valve housing (3) fixed to the bore (2) of the modulator block (1), a cylindrical sleeve (4) coupled to the valve housing (3), and a sleeve (4) opposite the valve housing (3). An armature 6 provided in the valve core 5 and the sleeve 4 in such a manner as to be movable forward and backward is provided. In addition, the valve seat 7 is press-fitted and fixed in the valve housing 3, and the valve seat 7 provided with the first orifice 7a, and installed in the valve housing 3, is retracted and has a second orifice 8a smaller than the first orifice 7a. And an opening and closing member 8 having an opening and closing portion 8b for opening and closing the first orifice 7a at a lower portion thereof.

Such a solenoid valve has a relatively small second orifice 8a opening first when the armature 6 moves toward the valve core 5 by a magnetic force, and upstream of the second orifice 8a after opening the second orifice 8a. When the downstream pressure difference becomes small, the relatively large first orifice 7a is opened by the opening spring 9 pushing the opening / closing member 8. Therefore, such a solenoid valve can easily open the flow path even with a small force.

The solenoid valve described above has a problem in that the valve housing and the valve seat are separately provided, and the valve seat is press-fitted and fixed in the valve housing so that the number of parts is complicated and the structure is difficult to manufacture. Therefore, the manufacturing cost was also high.

In addition, the above-described solenoid valve is coupled to the sleeve and the valve core by welding, and the sleeve and the valve housing are also joined by welding, so there is a drawback in that assembly productivity is low because there is a lot of labor for these couplings.

The present invention is to solve such problems, it is an object of the present invention to provide a solenoid valve for a brake system that is simpler than the conventional configuration to facilitate the manufacture and to reduce the manufacturing cost.

A solenoid valve for a brake system according to the present invention for achieving the above object is a cylindrical sleeve which is coupled to enter into the bore of the modulator block; A valve seat member installed in the sleeve and having a first orifice formed therein; A valve core coupled to the sleeve opposite the valve seat member; An opening and closing member installed in the sleeve and having an inner flow path formed therein and having a second orifice smaller than the first orifice at one end thereof, and having a first opening and closing portion for opening and closing the first orifice at the other end thereof; An armature removably mounted in the sleeve and having a second opening and closing portion for opening and closing the second orifice; A restoring spring for pressing the armature toward the second orifice; An opening spring for moving the opening and closing member toward the amateur to open the first orifice; And an oil flow path configured to radially communicate with the sleeve located inside the modulator block bore.

The sleeve includes at least one stepped portion provided in a portion entering the bore to support the valve seat member and the open spring.

A flange for fixing the sleeve to the modulator block is coupled to the outer surface of the sleeve.

The solenoid valve according to the present invention has an effect of simplifying the configuration compared to the prior art because the number of parts is reduced because a portion of the sleeve is installed to enter the inside of the modulator block and a valve seat member having a first orifice formed therein is installed in the sleeve. . That is, since there is no need for a conventional valve housing, the configuration can be simplified.

In addition, the solenoid valve according to the present invention can be easily assembled because the flange outside the sleeve is fixed directly to the modulator block. In addition, since the valve core and the sleeve are engaged by the engaging portion due to the deformation of the coupling groove and the sleeve, the coupling is easy. Therefore, it is easier to manufacture than the conventional and there is an effect that can reduce the manufacturing cost.

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

As shown in FIG. 2, the solenoid valve for the brake system according to the present invention is coupled to an end portion of the cylindrical sleeve 10, the opening / closing member 20 installed in the sleeve 10, the amateur 30, and the sleeve 10. The valve core 40 and the excitation coil assembly 60 provided outside the sleeve 10 are provided.

The sleeve 10 is installed so that a part thereof enters the bore 101 of the modulator block 100. The sleeve 10 has an oil passage 11 formed to radially communicate with a portion entering the bore 101 so as to communicate with the inflow passage 102 of the modulator block 100, and the bore 101. An end portion entering the inside is opened to communicate with the discharge passage 103 of the modulator block 100.

A cylindrical valve seat member 12 having a first orifice 13 is installed in the sleeve 10 of the portion entering the modulator block 100. In order to support the valve seat member 12, the sleeve 10 is provided with a stepped portion 14 having a reduced outer diameter, and the valve seat member 12 is press-fitted and fixed in the sleeve 10.

The opening and closing member 20 is provided in a cylindrical shape and is removably installed in the sleeve 10. The opening / closing member 20 has an inner flow passage 21 penetrating up and down therein, and has a second orifice 22 having a diameter smaller than that of the first orifice 13 thereon. In addition, a first opening and closing part 23 for opening and closing the first orifice 13 is provided below the opening and closing member 20.

On the outer surface of the opening and closing member 20, an opening spring 24 for moving the opening and closing member 20 in the direction of opening the first orifice 13 is installed. The open spring 24 is supported by a stepped portion 15 formed at one end thereof, and the other end thereof is supported by a spring support jaw 25 having a flange shape provided at an outer surface of the opening / closing member 20. Accordingly, the opening and closing member 20 may move in the direction of opening the first orifice 13 so as to open the first orifice 13 unless the amateur 30 is pressurized.

The outer surface of the sleeve 10 is coupled to the flange 17 that can secure the sleeve 10 to the modulator block 100 and at the same time close the inlet of the bore 101. The flange 17 is fixed to the outer surface of the sleeve 10 by welding or the like. In addition, a cylindrical filter member 18 is installed outside the sleeve 10. The filter member 18 filters foreign matters from the oil flowing into the oil channel 11 of the sleeve 10 from the inflow channel 102 of the modulator block 100. The filter member 18 is coupled to enter the bore 101 of the modulator block 100 together with the sleeve 10 in a state of being mounted on the outer surface of the sleeve 10.

The valve core 40 is coupled to the upper end of the sleeve 10 to be press-fitted to close the top opening of the sleeve 10. As shown in FIG. 5, a coupling groove 41 is formed along an outer periphery of the valve core 40 to engage the valve core 40 and the sleeve 10, and the sleeve 10 may be deformed. Thereby, the engaging portion 16 is provided to enter the engaging groove 41 is provided. This allows the valve core 40 to be fixed to the sleeve 10 by entering the valve core 40 into the sleeve 10 and forming the catching portion 16 by deformation. This coupling structure makes the coupling of the sleeve 10 and the valve core 40 easier than the conventional welding method, and also allows the coupling process to be simplified.

The amateur 30 is installed in the sleeve 10 so as to be able to move up and down. The amateur 30 has a cylindrical shape whose outer diameter corresponds to the inner diameter of the sleeve 10, and has an oil passage 31 through which oil flows in the vertical direction on the outer surface. A second opening and closing part 32 capable of opening and closing the second orifice 22 is provided at the bottom of the amateur 30. This allows the second orifice 22 to be opened and closed by the advancing and retracting motion of the amateur 30.

Between the amateur 30 and the valve core 40 is provided with a restoring spring 70 for pressing the amateur 30 toward the opening and closing member 20. Restoration spring 70 is accommodated in the spring receiving groove 33 formed on the upper portion of the amateur (30). This allows the restoring spring 70 to close the second orifice 22 by pressing the armature 30 toward the opening and closing member 20. Restoring spring 70 is made of a greater elasticity than the open spring 24 to overcome the elastic force of the open spring 24 and to press the amateur 30 and the opening and closing member 20.

The excitation coil assembly 60 is provided in a cylindrical shape and is coupled to the upper outer surface of the valve core 40 and the sleeve 10. The excitation coil assembly 60 includes a cylindrical coil case 61, a bobbin 62 accommodated in the coil case 61, and an excitation coil 63 wound on an outer surface of the bobbin 62. The magnetic field is formed when the excitation coil 63 is applied with power to move the armature 30 toward the valve core 40 so as to open the second orifice 22.

When the solenoid valve is mounted on the modulator block 100, the sleeve 10 enters the bore 101 of the modulator block 100 while the filter member 18 is assembled to the outside of the sleeve 10. In this state, the inlet side of the bore 101 of the modulator block 100 is deformed. In this case, the deformation part 110 of the modulator block 100 is deformed so as to cover the flange 17 so that the mounting of the valve is completed by fixing the flange 17.

The solenoid valve for the brake system has a form in which a part of the sleeve 10 enters the bore 101 of the modulator block 100, and the valve seat member forming the first orifice 13 in the sleeve 10 ( Since 12) is combined, the number of parts can be reduced and the configuration can be simplified. That is, the valve housing may be separately provided and the configuration may be simplified as compared with the conventional valve in which the valve housing and the sleeve are coupled. This is because a part of the sleeve 10 entering the modulator block 100 replaces the conventional valve housing. In addition, in the present embodiment, the valve core 40 and the sleeve 10 are also coupled by the engaging portion 16 due to the deformation of the coupling groove 41 and the sleeve 10. As such, the present embodiment can reduce the manufacturing cost because the configuration is simple and easy to manufacture.

The following describes the opening and closing operation of such a solenoid valve.

As shown in FIG. 2, when power is not applied to the excitation coil assembly 60, the restoring spring 70 pushes the armature 30 toward the second orifice 22. The two openings 32 close the second orifice 22. In addition, since the armature 30 presses the opening / closing member 20 by the pressing force of the restoring spring 70, the first orifice 13 is also closed by the opening / closing member 20. Therefore, in this case, the oil does not flow from the inflow passage 102 of the modulator block 100 toward the discharge passage 103.

When power is applied to the excitation coil assembly 60, as shown in FIG. 3, the armature 30 is resilient to the restoring spring 70 due to the magnetic force acting between the armature 30 and the valve core 40. Win and move toward the valve core 40. Thus, the second orifice 22 is open. When the second orifice 22 is opened, the oil of the inflow passage 102 passes through the filter member 18 and then flows into the sleeve 10 through the oil passage 11 of the sleeve 10. The oil flows through the second orifice 22 of the opening and closing member 20 toward the discharge passage 103.

If the pressure difference between the upstream and downstream of the second orifice 22 decreases after the second orifice 22 is first opened, as shown in FIG. 4, the opening and closing member 20 is raised by the elasticity of the opening spring 24. Therefore, the first orifice 13 having a large diameter is opened. Therefore, the oil flows toward the discharge flow path 103 through the first orifice 13 having a large diameter and not through the second orifice 22. As described above, the solenoid valve of the present invention opens the channel sequentially through the second stage in such a manner that the first orifice 13 having a larger diameter is opened after the second orifice 22 having a smaller diameter is opened first. It can be opened easily.

1 is a cross-sectional view of a conventional solenoid valve for a brake system.

2 is a cross-sectional view of a solenoid valve for a brake system according to the present invention, in which the first and second orifices are closed.

3 is a cross-sectional view of a solenoid valve for a brake system according to the present invention, showing a state in which the second orifice is opened.

4 is a cross-sectional view of a solenoid valve for a brake system according to the present invention, showing a state in which the first orifice is opened.

5 is a detailed view of part V of FIG. 2.

Explanation of symbols on the main parts of the drawings

10: sleeve 12: valve seat member

13: orifice 20: opening and closing member

22: the second orifice 30: amateur

40: valve core 60: female coil assembly

Claims (3)

A cylindrical sleeve coupled to enter a bore of the modulator block; A valve seat member installed in the sleeve and having a first orifice formed therein; A valve core coupled to the sleeve opposite the valve seat member; An opening and closing member installed in the sleeve and having an inner flow path formed therein and having a second orifice smaller than the first orifice at one end thereof and having a first opening and closing portion for opening and closing the first orifice at the other end thereof; An armature removably mounted in the sleeve and having a second opening and closing portion for opening and closing the second orifice; A restoring spring for pressing the armature toward the second orifice; An opening spring for moving the opening and closing member toward the amateur to open the first orifice; A solenoid valve for a brake system, characterized in that it comprises an oil passage formed in radial communication with the sleeve located inside the modulator block bore. The method of claim 1, The sleeve includes a solenoid valve for a brake system, characterized in that it comprises at least one stepped portion provided in the portion entering the bore for the support of the valve seat member and the open spring. The method of claim 1, The outer surface of the sleeve is a solenoid valve for a brake system, characterized in that a flange for fixing the sleeve to the modulator block is coupled.
KR1020070102373A 2007-10-11 2007-10-11 Solenoid valve for brake system KR20090037018A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070102373A KR20090037018A (en) 2007-10-11 2007-10-11 Solenoid valve for brake system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070102373A KR20090037018A (en) 2007-10-11 2007-10-11 Solenoid valve for brake system

Publications (1)

Publication Number Publication Date
KR20090037018A true KR20090037018A (en) 2009-04-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070102373A KR20090037018A (en) 2007-10-11 2007-10-11 Solenoid valve for brake system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140058736A (en) * 2012-11-05 2014-05-15 현대모비스 주식회사 Valve arrangement for controlling oil pressure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140058736A (en) * 2012-11-05 2014-05-15 현대모비스 주식회사 Valve arrangement for controlling oil pressure

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