KR100863549B1 - Solenoid valve for anti-lock brake system - Google Patents

Solenoid valve for anti-lock brake system Download PDF

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Publication number
KR100863549B1
KR100863549B1 KR1020070116370A KR20070116370A KR100863549B1 KR 100863549 B1 KR100863549 B1 KR 100863549B1 KR 1020070116370 A KR1020070116370 A KR 1020070116370A KR 20070116370 A KR20070116370 A KR 20070116370A KR 100863549 B1 KR100863549 B1 KR 100863549B1
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KR
South Korea
Prior art keywords
bore
valve
inlet
orifice
outlet
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KR1020070116370A
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Korean (ko)
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이충재
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주식회사 만도
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    • 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
    • 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
    • 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
    • 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
    • F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
    • 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)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Transportation (AREA)
  • Power Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

A solenoid valve for an anti-lock brake system is provided to prevent leakage by forcing an orifice into a magnet core and a valve bore of a modulator block. A solenoid valve for an anti-lock brake system comprises a magnet core(27), an orifice(25), and a filter sheet(28). The magnet core is installed at the top of a valve bore(41) formed at a modulator block and provided with an inlet(27b) and an outlet(27a). Forced into the valve bore, the orifice has first and second bores, wherein the magnetic core is pressed into the first bore. An outlet filter body(25e) is installed at the outer edge of the orifice to filter a fluid passing through the outlet. The filter sheet is forced into the second bore and provided with an inlet filter body(28a) for filtering a fluid passing through the inlet.

Description

안티록 브레이크 시스템용 솔레노이드밸브{solenoid valve for Anti-lock brake system}Solenoid valve for anti-lock brake system

도 1은 종래 노말클로즈형 솔레노이드 밸브의 구성을 보인 단면도이다.1 is a cross-sectional view showing the configuration of a conventional normal closed solenoid valve.

도 2는 본 발명에 따른 솔레노이드밸브의 구성을 보인 단면도이다.2 is a cross-sectional view showing the configuration of a solenoid valve according to the present invention.

*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

20 : 밸브 21 : 슬리브20: valve 21: sleeve

22 : 아마추어 23 : 플런저22: Amateur 23: Plunger

24 : 밸브시트 25 : 오리피스24: valve seat 25: orifice

26 : 체크밸브 27 :마그네틱 코어26: check valve 27: magnetic core

28: 필터시트28: Filter sheet

본 발명은 안티록 브레이크 시스템용 밸브에 관한 것으로, 더욱 상세하게는 필터의 설치구조 및 바이패스 유로의 구조를 개선하여 부품수가 감소되어 생산원 가가 절감되도록 하는 안티록 브레이크 시스템용 밸브에 관한 것이다. The present invention relates to a valve for an antilock brake system, and more particularly, to an antilock brake system valve for improving the installation structure of the filter and the structure of the bypass flow path so that the number of parts is reduced to reduce the production cost.

일반적인 차량의 유압브레이크는 브레이크 페달의 작동에 의해 마스터 실린더에 유압이 인가되어 제동이 이루어지는데, 이때 타이어에 노면과 타이어사이의 정지마찰력보다 큰 제동력이 가해질 경우 타이어가 노면에서 미끄러지는 슬립현상이 발생된다.  In general, the hydraulic brake of a vehicle is braked by applying hydraulic pressure to the master cylinder by the operation of the brake pedal, and when the tire is applied with a braking force greater than the static friction force between the road surface and the tire, slippage of the tire slips on the road surface. do.

그러나, 운동마찰계수는 정지마찰계수보다 작으므로 최상의 제동이 이루어지기 위해서는 이러한 슬립현상이 방지되어야 되고, 또한 브레이크 작동시 핸들제어가 불가능하게 되는 핸들잠김현상은 방지되어야 한다.However, since the motion friction coefficient is smaller than the static friction coefficient, such slip phenomenon must be prevented in order to achieve the best braking, and the handle locking phenomenon that the handle control becomes impossible during brake operation must be prevented.

따라서, 마스터 실린더에 가해지는 유압을 제어하여 이러한 현상을 방지하는 것이 ABS(Anti-lock Brake System)로, 기본적으로 다수개의 솔레노이드 밸브와 이를 제어하기위한 ECU, 어큐뮬레이터, 유압펌프로 구성된다.Therefore, to prevent such a phenomenon by controlling the hydraulic pressure applied to the master cylinder is ABS (Anti-lock Brake System) is basically composed of a plurality of solenoid valves and ECU, accumulator, hydraulic pump for controlling them.

솔레노이드 밸브는 유압브레이크의 상류측에 배치되며 평상시 개방상태로 유지되는 노말오픈형 솔레노이드밸브와, 하류측에 배치되며 평상시 폐쇄된 상태로 유지되는 노말클로즈형 솔레노이드밸브로 구별된다.The solenoid valve is divided into a normal-open solenoid valve disposed upstream of the hydraulic brake and normally kept open, and a normally closed solenoid valve disposed downstream and normally closed.

도 1을 참조하여 설명하면, 종래 노말오픈형 솔레노이드밸브(이하 솔레노이드 밸브라 함)는 직접도를 높이기 위해 모듈레이터 블록(1)에 설치되며, 모듈레이터 블록(1)에는 밸브가 설치될 수 있도록 밸브 보어(2)가 절삭 가공된다.Referring to Figure 1, the conventional normally open solenoid valve (hereinafter referred to as solenoid valve) is installed in the modulator block (1) to increase the direct degree, the valve bore (1) is installed in the modulator block (1) 2) is cut.

이 밸브 보어(2)에는 모듈레이터 블록(1)에 형성된 내부 유로와 연결됨과 동시에 마그네트 코어(3)가 상기 밸브 보어(2)내에 삽입되어 설치된다.The valve bore 2 is connected to an internal flow path formed in the modulator block 1 and a magnet core 3 is inserted into the valve bore 2 and installed.

상기 마그네트 코어(3)의 일단에는 그 내부의 중공에 설치되는 아마츄어(4) 가 진퇴할 수 있도록 원통형 슬리브(5)가 결합된다.The cylindrical sleeve 5 is coupled to one end of the magnet core 3 so that the armature 4 installed in the hollow inside thereof can retreat.

상기 아마츄어(4)에는 진퇴운동을 통해 상기 밸브시트(6)의 오리피스(6a)를 개폐하도록 그 일단에 일체로 마련된 플런저(7)가 마련되며, 플런저(7)과 밸브시트 (6)사이에는 탄성부재(9)가 설치된다.The armature (4) is provided with a plunger (7) integrally provided at one end thereof to open and close the orifice (6a) of the valve seat (6) through a forward and backward movement, between the plunger (7) and the valve seat (6) An elastic member 9 is installed.

한편, 밸브시트(6)가 축방향으로 배치된 마그네트 코어(3)의 하부는 보어 (2)내부와 소정의 클리어런스를 갖도록 결합되며, 이 외주에는 탄성재질로 마련되어 체크밸브 기능을 수행하도록 마련된 립 시일(8)이 설치된다. 이 립 시일(8)은 가장자리에 탄성편을 구비한 고리형상으로 마련되며 이러한 립 시일(8)의 설치를 위하여 마그네트 코어(3)의 하단부 외주에는 환형의 안착홈이 마련된다.On the other hand, the lower portion of the magnet core 3, the valve seat 6 is disposed in the axial direction is coupled to the inside of the bore (2) to have a predetermined clearance, the outer periphery of the lip is provided to perform a check valve function The seal 8 is installed. The lip seal 8 is provided in an annular shape with an elastic piece on the edge and an annular seating groove is provided on the outer periphery of the lower end of the magnet core 3 for installation of the lip seal 8.

이러한 립 시일(8)은 제동압력이 가해지는 경우 탄성편이 반경방향으로 벌어져 보어 내주와 밀착되며, 이에 따라 제동압력은 오리피스(6a)와 아웃렛(10)을 거쳐 브레이크측으로 전달된다. 반대로 제동압력 해제시에는 빠져나오는 액압에 의해 탄성편이 중심방향으로 수축하며 보어 내주와 이격되어 압력해제유로를 형성한다. 따라서 제동압력의 일부는 인렛(9)을 통해 마스터실린더측으로 빠져나가게 되어 있다.The lip seal 8 is in close contact with the inner circumference of the elastic piece when the braking pressure is applied in the radial direction, and thus the braking pressure is transmitted to the brake side via the orifice 6a and the outlet 10. On the contrary, when the braking pressure is released, the elastic piece contracts in the center direction due to the hydraulic pressure released, and is spaced apart from the inner circumference of the bore to form a pressure release passage. Therefore, a part of the braking pressure passes through the inlet 9 to the master cylinder side.

그러나, 이러한 종래의 립 시일(8)에 의한 압력해제구조는 립 시일(8)과 오리피스를 마그네트 코어(3)에 조립함에 따라 마그네트 코어(3)의 길이가 지나치게 길어지고 그 형상도 복잡해져서 제품의 생산원가를 상승시키는 요인이 되었다.However, this conventional pressure release structure by the lip seal 8, as the lip seal 8 and the orifice are assembled to the magnet core 3, the length of the magnet core 3 becomes too long and the shape thereof becomes complicated. Increased the cost of production.

본 발명은 이와 같은 문제점들을 해결하기 위한 것으로, 본 발명의 목적은 마그네트 코어의 길이를 짧게 하고 그 형상도 단순화된 컴팩트한 구조를 통해 생산원가가 절감되도록 하는 안티록 브레이크 시스템용 솔레노이드밸브를 제공하는 것이다. The present invention is to solve such problems, an object of the present invention is to provide a solenoid valve for an anti-lock brake system to reduce the production cost through a compact structure of a short length of the magnet core and simplified shape will be.

이러한 목적을 달성하기 위한 본 발명은; 모듈레이터 블록에 형성되는 밸브 보어의 상부에 결합되며 인렛과 아웃렛이 형성된 마그네틱 코어와, 상기 밸브 보어에 압입되며 상부 및 하부에 각각 제1보어 및 제2보어가 마련되되 상기 제1보어에는 상기 마그네틱 코어가 압입되며 그 외주연에 상기 아웃렛을 통과하는 유체의 필터링을 위한 아웃렛 필터체가 마련되는 오리피스와, 상기 제2보어에 압입되며 상기 인렛을 통과하는 유체를 필터링하는 인렛 필터체가 마련된 필터시트를 포함하는 것을 특징으로 한다.The present invention for achieving this object is; A magnetic core coupled to an upper portion of the valve bore formed in the modulator block and having an inlet and an outlet formed therein, and a first bore and a second bore press-fitted into the valve bore and respectively provided on the upper and lower portions thereof, wherein the magnetic core is provided on the first bore. And an orifice having an inlet filter body for filtering the fluid passing through the outlet at an outer circumference thereof, and a filter sheet provided with an inlet filter body for filtering the fluid passing through the inlet and pressurized into the second bore. It is characterized by.

상기 오리피스의 일측에는 상기 인렛과 상기 아웃렛사이를 연결하는 바이패스 유로가 형성되고, 상기 바이패스 유로상에는 체크 밸브가 마련되는 것을 특징으로 한다. One side of the orifice is formed with a bypass flow path connecting the inlet and the outlet, characterized in that the check valve is provided on the bypass flow path.

상기 체크밸브는 상기 바이패스 유로를 개폐하는 구체를 포함하고, 상기 필터시트에는 상기 구체의 이탈을 방지하기 위한 이탈방지턱이 형성된 것을 특징으로 한다. The check valve includes a sphere for opening and closing the bypass flow path, characterized in that the filter seat is formed with a separation prevention jaw for preventing the separation of the sphere.

이하, 본 발명에 따른 하나의 바람직한 실시 예를 첨부도면을 참조하여 상세히 설명한다.Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

도 2를 참조하면, 본 발명에 따른 안티록 브레이크 시스템용 밸브(20)는 육 면체의 블록으로 이루어진 모듈레이터 블록(40)에 보어(41)가 형성되고, 이 보어(41)에 밸브(20)가 설치되는 구조이다.Referring to FIG. 2, a valve 20 for an anti-lock brake system according to the present invention has a bore 41 formed in a modulator block 40 made of a hexahedral block, and the valve 20 is formed in the bore 41. It is a structure that is installed.

본 실시예에서 도시된 밸브(20)는 NO형 솔레노이드 밸브로 평상시 개방상태를 유지하다가 전원이 인가되는 경우 유로를 폐쇄하는 타입이다.The valve 20 shown in the present embodiment is a type NO solenoid valve that normally maintains an open state and closes the flow path when power is applied.

밸브(20)는 내부에 중공이 형성된 원통형의 슬리브(21)와, 이 슬리브(21) 내부에 마련되는 아마츄어(22)와, 상기 슬리브(21)의 하단에 결합되는 마그네트 코어(27)를 포함한다.The valve 20 includes a cylindrical sleeve 21 having a hollow formed therein, an amateur 22 provided inside the sleeve 21, and a magnet core 27 coupled to a lower end of the sleeve 21. do.

마그네트 코어(27)에는 아마츄어(22)의 하부로부터 연장되는 플런저(23)가 내부에 진퇴가능하게 마련되며, 플런저(23)의 하부에는 밸브시트(24)가 설치된다.The magnet core 27 is provided with a plunger 23 extending from the lower part of the armature 22 so as to be retractable therein, and a valve seat 24 is provided at the lower part of the plunger 23.

이때 마그네트 코어(27)의 원주방향으로는 아웃렛(27a)이 형성되어 있고, 마그네트 코어(27)의 길이방향 하부이며 플런저의 하방으로는 인렛(27b)이 형성되어 있다.At this time, the outlet 27a is formed in the circumferential direction of the magnet core 27, the inlet 27b is formed below the plunger in the longitudinal direction of the magnet core 27.

상기 밸브시트(24)는 상기 인렛(27b)에 배치되며 플런저(23)의 상하운동에 의해 개폐되는 오리피스(24a)가 형성되어 있다.The valve seat 24 is disposed on the inlet 27b and is formed with an orifice 24a that is opened and closed by the vertical movement of the plunger 23.

아웃렛(27a)은 마스터실린더(미도시)측과, 인렛(27b)은 브레이크(미도시) 및 다른 밸브의 아웃렛(미도시)과 연계된다. The outlet 27a is associated with a master cylinder (not shown), and the inlet 27b is associated with a brake (not shown) and an outlet (not shown) of another valve.

또한, 밸브시트(24)의 하부의 인렛(27b) 유로에는 오리피스(25)가 결합되어 플런저(23), 밸브시트(24) 및 오리피스(25)의 순서대로 서로 동축상에 배치된다.In addition, an orifice 25 is coupled to an inlet 27b flow path below the valve seat 24 so that the plunger 23, the valve seat 24, and the orifice 25 are disposed coaxially with each other.

오리피스(25)에는 내부에 인렛유로(25a)가 형성되며 상부 및 하부에 각각 제1보어와 제2보어가 형성된다. 또한 오리피스(25)에 소경부(25b)로 형성되고 하부는 이 소경부(25b)보다 큰 직경을 갖도록 대경부(25c)로 형성된다.The orifice 25 has an inlet flow passage 25a formed therein and a first bore and a second bore formed in the upper and lower portions, respectively. In addition, the orifice 25 is formed with a small diameter portion 25b, and the lower portion is formed with a large diameter portion 25c to have a larger diameter than the small diameter portion 25b.

또한, 오리피스(25)는 상기 대경부(25c)의 상방으로 필터부(25d)가 연장형성되며, 이러한 필터부(25d)는 그 내주면에 마그네트 코어(27)가 결합될 수 있도록 제1보어를 형성하며 이때 마그네트 코어(27)은 제1보어에 실링을 위하여 압입을 통해 조립되고, 오리피스(25)는 모듈레이터블럭(40)에 형성된 보어(41)에 압입되는 방법으로 결합되어 이중으로 실링이 유지되도록 한다.In addition, the orifice 25 has a filter portion 25d extending upwardly above the large diameter portion 25c, and the filter portion 25d has a first bore so that the magnet core 27 can be coupled to the inner circumferential surface thereof. At this time, the magnet core 27 is assembled by press-fitting for sealing to the first bore, the orifice 25 is coupled by the method to press-fit to the bore 41 formed in the modulator block 40 to maintain the sealing double Be sure to

상기 필터부(25d)는 오리피스(25)를 마그네트 코어(27)에 결합되도록 고정함과 동시에 인렛(27a)으로 통하는 유압유의 필터링을 위한 구조를 형성한다.The filter portion 25d fixes the orifice 25 to be coupled to the magnet core 27 and forms a structure for filtering the hydraulic oil passing through the inlet 27a.

즉, 필터부(25d)에는 상기 아웃렛(27a)과 인접한 부분에 아웃렛 필터체(25e)가 설치되고 필터부(25d)는 아웃렛 필터체(25e)를 지지하는 역할을 한다. That is, the outlet filter element 25e is provided in the filter part 25d adjacent to the outlet 27a, and the filter part 25d serves to support the outlet filter element 25e.

오리피스(25)의 소경부(25b)는 마그네트 코어(27)의 인렛(27b)에 압입되어 인렛(27b)과 소경부(25b)사이에서 밀폐상태가 유지되도록 하고, 오리피스(25)의 인렛유로(25a)의 단면적은 차량의 특성에 따라 변경될 수 있다.The small diameter portion 25b of the orifice 25 is press-fitted into the inlet 27b of the magnet core 27 so that the sealed state is maintained between the inlet 27b and the small diameter portion 25b, and the inlet flow path of the orifice 25 is The cross-sectional area of 25a can be changed according to the characteristics of the vehicle.

또한, 오리피스(25)의 대경부(25c) 일측에는 아웃렛(27a)과 인렛(27b)사이를 연결하는 바이패스 유로를 형성하기 위한 체크밸브(26)가 마련되는데, 이러한 체크밸브(26)는 제동해제시 아웃렛(27a)의 압력을 해제하기 위하여 일부 유압유를 인렛(27b)측으로 바이패스하는 기능을 한다.In addition, one side of the large diameter portion 25c of the orifice 25 is provided with a check valve 26 for forming a bypass flow path connecting the outlet 27a and the inlet 27b, the check valve 26 is In order to release the pressure of the outlet 27a when the brake is released, a part of the hydraulic oil is bypassed to the inlet 27b.

체크밸브(26)는 오리피스(25)의 대경부(25c)를 관통하는 구조로 마련되는 체크밸브 유로(26a)에 구체(26b)가 삽입되는 구조로 형성되며, 아웃렛(27a)측의 압력이 인렛(27b)측의 압력보다 높은 경우에만 개방되도록 체크밸브 유로(26a)의 하부 에서 상부를 향한 방향으로 단턱(26c)이 형성되어 있다.The check valve 26 is formed in a structure in which the sphere 26b is inserted into the check valve flow path 26a provided to penetrate the large diameter portion 25c of the orifice 25, and the pressure on the outlet 27a side is increased. A step 26c is formed in the direction from the lower side to the upper side of the check valve flow path 26a so as to open only when the pressure is higher than the inlet 27b side.

또한, 마그네트 코어(27)의 하부 외주연에는 아웃렛(27a) 및 인렛(27b)을 유출입하는 유압유의 필터링을 위하여 필터시트(28)가 결합되어 있다.In addition, the filter sheet 28 is coupled to the lower outer periphery of the magnet core 27 to filter the hydraulic oil flowing in and out of the outlet 27a and the inlet 27b.

필터시트(28)는 유압유의 필터링을 위하여 오리피스(25)의 하방에 설치되는 인렛 필터체(28a)를 포함한다.The filter sheet 28 includes an inlet filter body 28a provided below the orifice 25 for filtering hydraulic oil.

이러한 필터시트(28)는 오리피스(25)의 하부에 결합되는데, 오리피스(25)의 하부에는 필터시트(28)가 결합될 수 있도록 제2보어가 형성되고 이 제2보어에 필터시트(28)이 압입된다. 필터시트(28)가 제2보어에 조립된 상태에서 구체(26b)가 이탈되지 않도록 필터시트(28)와 체크밸브(26)이 인접하는 부분에는 이탈방지턱(28b)가 마련된다. The filter sheet 28 is coupled to the lower portion of the orifice 25, the second bore is formed in the lower portion of the orifice 25 so that the filter sheet 28 can be coupled to the filter bore 28 to the second bore Is press-fitted. A separation stop 28b is provided at a portion where the filter seat 28 and the check valve 26 are adjacent to each other so that the sphere 26b is not detached while the filter seat 28 is assembled to the second bore.

이상에서 상세히 설명한 바와 같이, 본 발명에 따른 안티록 브레이크시스템용 솔레노이드밸브는 아웃렛 필터가 설치된 오리피스가 소경부를 통해 마그네트 코어에 압입됨과 동시에 대경부가 모듈레이터 블록의 밸브 보어에 압입되는 구조로 설치됨으로써 이중 실링구조를 형성하여 별도의 실링부재를 설치하지 않더라도 누유가 방지된다.또한, 인렛 및 체크밸브로의 필터링을 위한 하나의 필터조립체에 의해 필터체의 설치가 한번에 이루어져서 부품수 감소는 물론 조립공정도 단순화 되며, 체크밸브를 설치함에도 밸브 전체의 길이를 짧게 할 수 있어 컴팩트한 구조를 통해 전체적으로 생산원가가 절감되는 탁월한 효과가 있다.As described in detail above, the anti-lock brake system solenoid valve according to the present invention is double-sealed by the structure in which the orifice in which the outlet filter is installed is pressed into the magnet core through the small diameter portion and the large diameter portion is pressed into the valve bore of the modulator block. By forming a structure, leakage is prevented even if a separate sealing member is not installed. Also, the filter body is installed at a time by one filter assembly for filtering to the inlet and check valve, thereby reducing the number of parts and simplifying the assembly process. In addition, even when the check valve is installed, the entire length of the valve can be shortened, thereby reducing the overall production cost through a compact structure.

Claims (3)

모듈레이터 블록에 형성되는 밸브 보어의 상부에 결합되며 인렛과 아웃렛이 형성된 마그네틱 코어와, 상기 밸브 보어에 압입되며 상부 및 하부에 각각 제1보어 및 제2보어가 마련되되 상기 제1보어에는 상기 마그네틱 코어가 압입되며 그 외주연에 상기 아웃렛을 통과하는 유체의 필터링을 위한 아웃렛 필터체가 마련되는 오리피스와, 상기 제2보어에 압입되며 상기 인렛을 통과하는 유체를 필터링하는 인렛 필터체가 마련된 필터시트를 포함하는 것을 특징으로 하는 안티록 브레이크 시스템용 밸브. A magnetic core coupled to an upper portion of the valve bore formed in the modulator block and having an inlet and an outlet formed therein, and a first bore and a second bore press-fitted into the valve bore and respectively provided on the upper and lower portions thereof, wherein the magnetic core is provided on the first bore. And an orifice having an inlet filter body for filtering the fluid passing through the outlet at an outer circumference thereof, and a filter sheet provided with an inlet filter body for filtering the fluid passing through the inlet and pressurized into the second bore. Valve for anti-lock brake system, characterized in that. 제1항에 있어서, 상기 오리피스의 일측에는 상기 인렛과 상기 아웃렛사이를 연결하는 바이패스 유로가 형성되고, 상기 바이패스 유로상에는 체크 밸브가 마련되는 안티록 브레이크 시스템용 밸브. The valve of claim 1, wherein a bypass flow path is formed at one side of the orifice to connect the inlet and the outlet, and a check valve is provided on the bypass flow path. 제2항에 있어서, The method of claim 2, 상기 체크밸브는 상기 바이패스 유로를 개폐하는 구체를 포함하고, 상기 필터시트에는 상기 구체의 이탈을 방지하기 위한 이탈방지턱이 형성된 것을 특징으로 하는 안티록 브레이크 시스템용 밸브. The check valve includes a sphere for opening and closing the bypass flow path, the filter seat for anti-lock brake system, characterized in that the separation prevention jaw for preventing the separation of the sphere is formed.
KR1020070116370A 2007-11-15 2007-11-15 Solenoid valve for anti-lock brake system KR100863549B1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100507938B1 (en) * 1996-09-03 2005-08-17 로베르트 보쉬 게엠베하 Electromagnetic valve for an automotive hydraulic braking system with traction control
KR100594994B1 (en) * 2005-08-08 2006-06-30 현대모비스 주식회사 Solenoid valve for abs

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100507938B1 (en) * 1996-09-03 2005-08-17 로베르트 보쉬 게엠베하 Electromagnetic valve for an automotive hydraulic braking system with traction control
KR100594994B1 (en) * 2005-08-08 2006-06-30 현대모비스 주식회사 Solenoid valve for abs

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
등록특허공보 등록번호10-0507938호 B1
등록특허공보 등록번호10-0594994호B1
일본 공개특허공보 특개2005-132347호 A

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