KR101404086B1 - Electronic control brake system - Google Patents

Electronic control brake system Download PDF

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KR101404086B1
KR101404086B1 KR1020100044708A KR20100044708A KR101404086B1 KR 101404086 B1 KR101404086 B1 KR 101404086B1 KR 1020100044708 A KR1020100044708 A KR 1020100044708A KR 20100044708 A KR20100044708 A KR 20100044708A KR 101404086 B1 KR101404086 B1 KR 101404086B1
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South Korea
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piston
guide
flange portion
modulator block
spring
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KR1020100044708A
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Korean (ko)
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KR20110125143A (en
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김용갑
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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
    • 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
    • B60T13/12—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 the fluid being liquid
    • B60T13/14—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 the fluid being liquid using accumulators or reservoirs fed by pumps
    • B60T13/142—Systems with master cylinder
    • 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
    • B60T13/12—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 the fluid being liquid
    • B60T13/14—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 the fluid being liquid using accumulators or reservoirs fed by pumps
    • B60T13/148—Arrangements for pressure supply
    • 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
    • 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
    • B60T8/40—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 comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4018—Pump units characterised by their drive mechanisms
    • B60T8/4022—Pump units driven by an individual electric motor
    • 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
    • B60T8/40—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 comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4031—Pump units characterised by their construction or mounting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/81—Braking systems

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Electromagnetism (AREA)
  • Regulating Braking Force (AREA)

Abstract

펌프유닛이 모듈레이터블록에 조립되기 전에 피스톤의 이탈을 방지하는 전자제어식 브레이크 시스템을 개시한다. 이러한 전자제어식 브레이크 시스템은 모듈레이터블록의 보어에서 왕복운동 가능하게 마련되는 피스톤과, 피스톤의 왕복운동을 가이드하도록 내면에 피스톤이 압입되는 피스톤가이드와, 피스톤가이드와 결합하여 모듈레이터블록에 피스톤가이드를 고정시키는 펌프 캡과, 피스톤에 형성되는 오일유로를 개폐하는 인렛밸브와, 인렛밸브와 펌프 캡의 사이에 배치되어 피스톤을 탄성 지지하는 피스톤 스프링을 포함하고, 인렛밸브는 오일유로를 막는 차폐부재와, 차폐부재를 탄성 지지하는 밸브스프링과, 밸브스프링을 지지하기 위해 피스톤의 단부에 결합되며, 플랜지부를 갖는 인렛 플레이트를 포함하고, 피스톤가이드는 플랜지부가 걸려 인렛 플레이트가 결합된 피스톤의 이탈을 방지하기 위한 걸림턱을 갖는다.Discloses an electronically controlled brake system that prevents piston disengagement before the pump unit is assembled to the modulator block. Such an electronically controlled brake system includes a piston provided to be capable of reciprocating motion in a bore of a modulator block, a piston guide into which a piston is inserted to guide the reciprocating motion of the piston, and a piston guide An inlet valve for opening and closing an oil passage formed in the piston, and a piston spring disposed between the inlet valve and the pump cap for elastically supporting the piston. The inlet valve includes a shielding member for blocking the oil passage, And a piston guide coupled to the end of the piston for supporting the valve spring and having a flange portion, the piston guide having a flange portion for engaging with the inlet plate to prevent disengagement of the piston And has a catching jaw.

Description

전자제어식 브레이크 시스템{Electronic control brake system}[0001] The present invention relates to an electronic control brake system,

본 발명은 전자제어식 브레이크 시스템에 관한 것으로, 더욱 상세하게는 펌프유닛이 모듈레이터블록에 조립되기 전 펌프유닛의 피스톤이 이탈되는 것을 방지하는 전자제어식 브레이크 시스템에 관한 것이다.The present invention relates to an electronically controlled brake system, and more particularly, to an electronically controlled brake system that prevents the piston of a pump unit from being released before the pump unit is assembled to the modulator block.

차량에 장착되는 전자제어식 브레이크 시스템은 차량의 바퀴측으로 전해지는 제동유압을 단속하여 바퀴의 노면슬립을 방지함으로써 안전한 제동이 이루어지게 하는 장치이다.The electronically controlled brake system mounted on the vehicle controls the braking hydraulic pressure transmitted to the wheel side of the vehicle to prevent the slip of the wheels on the road surface, thereby ensuring safe braking.

이러한 전자제어식 브레이크 시스템은 다수개의 솔레노이드밸브와, 오일을 일시 저장하는 저압 어큐뮬레이터 및 고압 어큐뮬레이터와, 저압 어큐뮬레이터에 일시 저장된 오일을 펌핑하기 위한 모터 및 유압펌프와, 솔레노이드밸브와 모터의 구동을 제어하는 전자제어유닛을 포함하고, 이러한 구성부품들은 알루미늄으로 이루어진 모듈레이터블록에 컴팩트하게 결합된다.This electronically controlled brake system includes a plurality of solenoid valves, a low-pressure accumulator and a high-pressure accumulator for temporarily storing oil, a motor and a hydraulic pump for pumping oil temporarily stored in the low-pressure accumulator, and a solenoid valve A control unit, and these components are compactly coupled to a modulator block made of aluminum.

도 1은 일반적인 브레이크 시스템의 모듈레이터블록 내에 구성된 유압회로도이다.1 is a hydraulic circuit diagram constructed in a modulator block of a general brake system.

도 1에 도시된 바와 같이 전자제어식 브레이크 시스템의 모듈레이터블록(10)에는 내부에 형성된 유로를 개폐하는 다수의 솔레노이드밸브(11a,11b)와, 복귀하는 오일을 가압하기 위한 모터유닛(13) 및 펌프유닛(20)과, 펌프유닛(20)의 상류측 및 하류측 유로 상에 각각 배치되는 저압 어큐뮬레이터(12) 및 고압 어큐뮬레이터(15)가 설치된다.1, the modulator block 10 of the electronically controlled brake system includes a plurality of solenoid valves 11a and 11b for opening and closing a flow path formed therein, a motor unit 13 for pressing the return oil, Unit 20 and a low-pressure accumulator 12 and a high-pressure accumulator 15 which are disposed on the upstream side and the downstream side flow path of the pump unit 20, respectively.

이러한 구성부품들은 모듈레이터블록(10) 내부에 형성된 다수의 유로를 통해 상호 연결되어 있으며, 전자제어유닛(미도시)에 의해 각각 동작이 제어되면서 마스터 실린더로부터 바퀴측 휠실린더(17)로 전달되는 제동유압을 단속하는 기능을 수행한다.These components are interconnected through a plurality of flow passages formed in the modulator block 10 and are controlled by an electronic control unit (not shown) so that the braking force transmitted from the master cylinder to the wheel- It controls the hydraulic pressure.

여기서 펌프유닛(20)은 유압라인을 따라 저압 어큐뮬레이터(12) 쪽으로 복귀한 브레이크 오일을 가압하여 바퀴측 휠실린더(17)로 압송시킴으로써 바퀴의 단속적인 제동이 이루어지게 한다.Here, the pump unit 20 pressurizes the brake fluid returned to the low-pressure accumulator 12 along the hydraulic line and press-feeds the brake oil to the wheel-side wheel cylinder 17, thereby intermittently braking the wheel.

도 2는 종래의 전자제어식 브레이크 시스템을 개략적으로 나타낸 단면도이다.2 is a schematic cross-sectional view of a conventional electronically controlled brake system.

도 2에 도시된 바와 같이, 종래의 전자제어실 브레이크 시스템의 펌프유닛(20)은 모터유닛(13)의 동작에 의해 진퇴하면서 가압실(21)의 오일을 가압하는 피스톤(22)과, 가압실(21)의 입구를 개폐하도록 피스톤(22)의 하류측 단부에 장착되는 유입밸브(23)와, 피스톤(22)의 진퇴에 따른 가압실(21)의 압력 변화에 의해 가압실(21)의 출구를 개폐하는 토출밸브(24)와, 피스톤(22)의 진퇴를 안내하도록 피스톤(22)의 둘레에 설치되는 가이드부재(25)와, 가이드부재(25)와 결합되는 펌프 캡(26)을 포함한다.2, the conventional pump unit 20 of the electronic control room brake system includes a piston 22 which pressurizes the oil in the pressurizing chamber 21 while moving back and forth by the action of the motor unit 13, An inlet valve 23 mounted on the downstream side end of the piston 22 for opening and closing the inlet of the piston 21 and a pressure sensor 23 for detecting the pressure of the pressure chamber 21 A guide member 25 provided around the piston 22 to guide the piston 22 forward and backward and a pump cap 26 coupled with the guide member 25, .

한편, 피스톤(22)과 펌프 캡(26)의 사이에는 피스톤을 탄성 지지하는 피스톤스프링(27)이 마련된다. 그러나, 종래의 전자제어식 브레이크 시스템은 펌프유닛(20)을 모듈레이터블록(10)에 조립하기 전 피스톤스프링(27)에 의해 피스톤이 가이드부재(25)로부터 이탈될 수 있는 문제점이 있다.Between the piston 22 and the pump cap 26, a piston spring 27 for elastically supporting the piston is provided. However, the conventional electronically controlled brake system has a problem that the piston can be released from the guide member 25 by the piston spring 27 before assembling the pump unit 20 to the modulator block 10. [

본 발명은 이러한 문제점을 해결하기 위한 것으로서, 본 발명의 목적은 펌프유닛을 모듈레이터블록에 조립하기 전 피스톤스프링에 의해 피스톤이 이탈되는 것을 방지할 수 있는 전자제어식 브레이크 시스템을 제공하는 데 있다.It is an object of the present invention to provide an electronically controlled brake system capable of preventing a piston from being disengaged by a piston spring before assembling a pump unit to a modulator block.

본 발명의 전자제어식 브레이크 시스템의 유압펌프는, 모듈레이터블록의 보어에서 왕복운동 가능하게 마련되는 피스톤과, 상기 피스톤의 왕복운동을 가이드하도록 내면에 상기 피스톤이 압입되는 피스톤가이드와, 상기 피스톤가이드와 결합하여 상기 모듈레이터블록에 상기 피스톤가이드를 고정시키는 펌프 캡과, 상기 피스톤에 형성되는 오일유로를 개폐하는 인렛밸브와, 상기 인렛밸브와 상기 펌프 캡의 사이에 배치되어 상기 피스톤을 탄성 지지하는 피스톤 스프링을 포함하고,A hydraulic pump of an electronically controlled brake system of the present invention includes a piston provided to be reciprocatable in a bore of a modulator block, a piston guide in which the piston is press-fitted to the inner surface so as to guide the reciprocating motion of the piston, An inlet valve for opening and closing the oil passage formed in the piston; and a piston spring disposed between the inlet valve and the pump cap for elastically supporting the piston, Including,

상기 인렛밸브는 상기 오일유로를 막는 차폐부재와, 상기 차폐부재를 탄성 지지하는 밸브스프링과, 상기 밸브스프링을 지지하기 위해 상기 피스톤의 단부에 결합되며, 플랜지부를 갖는 인렛 플레이트를 포함하고,The inlet valve includes a shielding member for blocking the oil passage, a valve spring for elastically supporting the shielding member, and an inlet plate coupled to an end of the piston to support the valve spring, the inlet plate having a flange portion,

상기 피스톤가이드는 상기 플랜지부가 걸려 상기 인렛 플레이트가 결합된 상기 피스톤의 이탈을 방지하기 위한 걸림턱을 갖는다.The piston guide has a locking protrusion for preventing the release of the piston to which the flange portion is engaged and the inlet plate is engaged.

상기 피스톤스프링은 일단이 상기 펌프 캡에 지지되고 타단이 상기 플랜지부에 지지된다.One end of the piston spring is supported by the pump cap and the other end is supported by the flange portion.

상기 플랜지부는 상기 펌프유닛이 상기 모듈레이터블록에 조립되기 전 상기 피스톤스프링의 탄성력에 의해 이동되어 상기 걸림턱에 걸려진다.The flange portion is moved by the elastic force of the piston spring before the pump unit is assembled to the modulator block, so that the flange portion is caught by the engagement protrusion.

상기 피스톤가이드는 상기 플랜지부가 접하는 제1내경과 상기 피스톤이 접하는 제2내경을 가지며, 상기 제2내경은 상기 제1내경 보다 작다.
상기 피스톤의 외면에는 원주방향을 따라 틈새가 형성되어 상기 틈새에 유입되는 유막으로 상기 피스톤을 실링한다.The piston guide has a first inner diameter in which the flange portion abuts and a second inner diameter in which the piston abuts, and the second inner diameter is smaller than the first inner diameter.
A gap is formed along the circumferential direction on the outer surface of the piston to seal the piston with the oil film flowing into the gap.

삭제delete

상술한 바와 같이 본 발명의 전자제어식 브레이크 시스템은 펌프유닛을 모듈레이터블록에 조립하기 전 피스톤스프링의 탄성력에 의해 가압되는 인렛 플레이트의 플랜지부가 피스톤가이드의 걸림턱에 걸려지므로 피스톤의 이탈을 방지할 수 있는 효과가 있다.As described above, in the electronically controlled brake system of the present invention, since the flange portion of the inlet plate, which is pressed by the elastic force of the piston spring before assembling the pump unit into the modulator block, is caught by the engagement protrusion of the piston guide, It is effective.

도 1은 일반적인 전자제어식 브레이크 시스템의 유압회로도이다.
도 2는 종래의 전자제어식 브레이크 시스템을 나타낸 단면도이다.
도 3은 본 발명의 전자제어식 브레이크 시스템을 나타낸 단면도이다.
도 4는 도 3의 일부를 확대 도시한 단면도이다.1 is a hydraulic circuit diagram of a typical electronically controlled brake system.
2 is a cross-sectional view of a conventional electronically controlled brake system.
3 is a cross-sectional view of the electronically controlled brake system of the present invention.
4 is an enlarged cross-sectional view of part of FIG.

도 3 및 도 4를 참고하면, 본 발명의 전자제어식 브레이크 시스템은 유입구(112) 및 토출구(113)를 갖는 모듈레이터블록(110)과, 모듈레이터블록(110)에 형성되는 보어(111)와, 보어(111)에 설치되는 펌프유닛(130)과, 모듈레이터블록(110)에 형성된 결합공(119)에 결합되는 모터유닛(120)을 구비한다.3 and 4, the electronically controlled brake system of the present invention includes a modulator block 110 having an inlet 112 and a discharge hole 113, a bore 111 formed in the modulator block 110, And a motor unit 120 coupled to a coupling hole 119 formed in the modulator block 110. The pump unit 130 is mounted on the motor 111,

모듈레이터블록(110)에 형성되는 보어(111)는 유입구(112)와 연통되는 유입실(116)과, 후술할 피스톤(140)의 후단과 펌프 캡(160) 사이에 형성되어 오일이 피스톤 작용에 의해 압축되는 압축실(117)과, 압축실(117)의 하류에 구비되고 토출구(113)와 연통되는 토출실(118)로 구분된다.The bore 111 formed in the modulator block 110 is formed between an inlet chamber 116 communicated with the inlet 112 and a rear end of the piston 140 and a pump cap 160 to be described later, And a discharge chamber 118 provided downstream of the compression chamber 117 and communicating with the discharge port 113. The compression chamber 117 is provided with a compression chamber 117,

모터유닛(120)과 펌프유닛(130)은 하나의 조립체로 조립된다. 모터유닛(120)은 모듈레이터블록(110)에 형성된 결합공(119)에 일체로 결합되고, 펌프유닛(130)은 모듈레이터블록(110)에 형성된 보어(111)에 일체로 결합된다.The motor unit 120 and the pump unit 130 are assembled into one assembly. The motor unit 120 is integrally coupled to the coupling hole 119 formed in the modulator block 110 and the pump unit 130 is integrally coupled to the bore 111 formed in the modulator block 110.

모터유닛(120)은 모터(121)와, 모터(121)로부터 회전력을 전달받아 회전하는 모터샤프트(122)와, 모터샤프트(122)를 지지하는 프론트베어링(124)과, 모터샤프트(122)의 회전운동을 직선운동으로 변환하는 니들베어링(123)과, 모터샤프트(122)와 결합하는 실링부재(125)를 포함한다.The motor unit 120 includes a motor 121, a motor shaft 122 that receives the rotational force from the motor 121 and rotates, a front bearing 124 that supports the motor shaft 122, A needle bearing 123 for converting the rotational motion of the motor shaft 122 into a linear motion, and a sealing member 125 for engaging with the motor shaft 122.

니들베어링(123)은 그 내경면으로 모터샤프트(122)와 압입되어 편심 결합되며, 모터샤프트(122)의 회전운동을 직선운동으로 변환하게 된다. 따라서 니들베어링(123)과 맞닿아 있는 피스톤(140)은 니들베어링(123)의 회전에 따라 모터샤프트(122)와 수직한 방향(예를 들면, 피스톤의 중심축 방향)으로 왕복운동 하게 된다.The needle bearing 123 is pressed and eccentrically coupled to the motor shaft 122 with its inner diameter surface to convert the rotational motion of the motor shaft 122 into a linear motion. The piston 140 in contact with the needle bearing 123 reciprocates in a direction perpendicular to the motor shaft 122 (e.g., in the direction of the central axis of the piston) as the needle bearing 123 rotates.

실링부재(125)는 그 내면을 통해 모터샤프트(122)와 관통 결합되고, 외면을 통해 모듈레이터블록(110)에 형성된 결합공(119)에 압입된다. 이러한 실링부재(125)는 그 내면에서 회전되는 모터샤프트(122)를 실링하고, 그 외면으로 유입실(116)에 있는 오일의 누설을 방지하는 역할을 한다.The sealing member 125 is inserted through the inner surface of the motor shaft 122 and press-fitted into the coupling hole 119 formed in the modulator block 110 through the outer surface. The sealing member 125 serves to seal the motor shaft 122 rotated on the inner surface thereof and to prevent leakage of the oil in the inflow chamber 116 to the outer surface thereof.

프론트베어링(124)은 모터(121)의 전면에 안착되며, 그 내면에 모터샤프트(122)와 관통 결합된다. 이러한 프론트베어링(124)은 모터샤프트(122)가 회전할 때 모터샤프트(122)의 축방향 흔들림을 막아주는 역할을 한다.The front bearing 124 is seated on the front surface of the motor 121 and penetrates through the motor shaft 122 on the inner surface thereof. The front bearing 124 serves to prevent axial movement of the motor shaft 122 when the motor shaft 122 rotates.

펌프유닛(130)은 보어(111)에서 왕복운동 가능하게 마련되는 피스톤(140)과, 보어(111)에서 왕복 운동하는 피스톤(140)을 가이드하는 피스톤가이드(150)와, 압축실(117)과 토출실(118)이 형성되며 피스톤가이드(150)와 결합하여 모듈레이터블록(110)에 피스톤가이드(150)를 고정시키는 펌프 캡(160)과, 유입구(112)로 유입되어 피스톤(140)에 형성된 오일유로(141)를 통해 이동하는 오일을 제어하도록 피스톤(140)의 일측 단부에 마련된 인렛밸브(170)와, 피스톤(140)의 왕복운동에 의해 압축된 오일이 토출구(113)로 이동하는 것을 제어하도록 펌프 캡(160)에 설치되는 아웃렛밸브(180)를 포함한다.The pump unit 130 includes a piston 140 that is reciprocatably movable in the bore 111, a piston guide 150 that guides the piston 140 reciprocating in the bore 111, A pump cap 160 formed with a discharge chamber 118 and a piston guide 150 to fix the piston guide 150 to the modulator block 110 and a pump cap 160 which is introduced into the inlet port 112, An inlet valve 170 provided at one end of the piston 140 for controlling the oil flowing through the formed oil passage 141 and an oil passage 170 for moving the oil compressed by the reciprocating motion of the piston 140 to the discharge port 113 And an outlet valve 180 installed in the pump cap 160 to control the flow rate.

먼저, 피스톤(140)은 모터샤프트(122)와 결합된 니들베어링(123)의 회전으로 왕복 운동하게 되며, 이러한 피스톤(140)에는 인렛밸브(170)에 의해 개폐되는 오일유로(141)가 형성된다. 또, 피스톤(140)의 외면에는 다수의 틈새(143)가 경방향으로 형성된다. 즉, 본 발명의 실시예에서는 상기의 틈새들(143)에 유입되는 유막을 이용하여 피스톤(140)의 왕복운동 시 피스톤(140)을 실링하게 된다.The piston 140 is reciprocated by the rotation of the needle bearing 123 coupled to the motor shaft 122. An oil passage 141 opened and closed by the inlet valve 170 is formed in the piston 140 do. A large number of gaps 143 are formed in the outer surface of the piston 140 in the radial direction. That is, in the embodiment of the present invention, the piston 140 is sealed when reciprocating the piston 140 using the oil film flowing into the gaps 143.

피스톤가이드(150)는 도시된 같이 모듈레이터블록(110)에 형성된 보어(111)에 외면 일부가 압입되고, 피스톤가이드(150)의 후단 및 모듈레이터블록(110)에 압입되지 않은 외면 일부는 펌프 캡(160)에 압입된다. A part of the outer surface of the piston guide 150 is press-fitted into the bore 111 formed in the modulator block 110 and a portion of the outer surface of the piston guide 150 not pushed into the rear end of the piston guide 150 and the modulator block 110, 160).

또, 피스톤가이드(150)는 그 내면에 피스톤(140)의 외면이 접하면서, 피스톤(140)이 축방향으로 왕복 운동 할 수 있도록 피스톤(140)의 움직임을 가이드 한다.The piston guide 150 guides the movement of the piston 140 so that the outer surface of the piston 140 contacts the inner surface of the piston guide 150 so that the piston 140 reciprocates in the axial direction.

또, 피스톤가이드(150)는 후술할 인렛밸브(170)의 인렛 플레이트(173)의 플랜지부(174)가 접하는 제1내경(150a)과, 후술할 걸림턱(151)의 형성에 따라 제1내경(150a) 보다 작은 직경을 가지며 피스톤(140)의 외경이 접하는 제2내경(150b)을 갖는다.The piston guide 150 has a first inner diameter 150a in contact with the flange portion 174 of the inlet plate 173 of the inlet valve 170 to be described later, And has a second inner diameter 150b having a diameter smaller than the inner diameter 150a and contacting the outer diameter of the piston 140. [

인렛밸브(170)는 피스톤(140)의 오일유로(141)를 막는 구형상의 제1차폐부재(171)와, 제1차폐부재(171)를 탄성 지지하는 제1밸브스프링(172)과, 제1밸브스프링(172)을 지지하기 위해 피스톤(140)에 결합되는 인렛 플레이트(173)를 포함한다.The inlet valve 170 includes a spherical first shielding member 171 for blocking the oil passage 141 of the piston 140, a first valve spring 172 elastically supporting the first shielding member 171, And an inlet plate 173 that is coupled to the piston 140 to support the valve spring 172.

이때, 제1차폐부재(171)는 제1밸브스프링(172)의 탄성력에 의해 오일유로(141)를 막고 있다가 압축실(117)에서 오일이 배출되어 압축실(117)의 압력이 떨어지면 오일유로(141)와 압축실(117) 사이의 압력차에 의해 피스톤(140)의 단부에서 떨어져 오일유로(141)를 개방시킨다.At this time, the first shielding member 171 closes the oil passage 141 by the elastic force of the first valve spring 172. When the oil is discharged from the compression chamber 117 and the pressure of the compression chamber 117 drops, The oil passage 141 is separated from the end portion of the piston 140 by the pressure difference between the oil passage 141 and the compression chamber 117 to open the oil passage 141.

제1밸브스프링(172)은 도시된 바와 같이 제1차폐부재(171)와 인렛 플레이트(173)의 사이에 배치되어 제1차폐부재(171)를 탄성 지지하게 된다.The first valve spring 172 is disposed between the first shielding member 171 and the inlet plate 173 to elastically support the first shielding member 171.

인렛 플레이트(173)는 상술한 바와 같이 제1밸브스프링(172)을 지지하기 위해 피스톤(140)에 결합되는데, 이러한 인렛 플레이트(173)는 피스톤가이드(150)의 내면에 접하는 플랜지부(174)를 갖는다. The inlet plate 173 is coupled to the piston 140 to support the first valve spring 172. The inlet plate 173 has a flange portion 174 contacting the inner surface of the piston guide 150, .

이때, 인렛 플레이트(173)의 플랜지부(174)는 펌프유닛(130)을 모듈레이터블록(110)에 조립하기 전일 경우 피스톤가이드(150)의 내면에 형성되는 걸림턱(151)에 걸리게 된다. At this time, the flange portion 174 of the inlet plate 173 is caught by the engagement protrusion 151 formed on the inner surface of the piston guide 150 before the pump unit 130 is assembled to the modulator block 110.

즉, 본 발명의 실시예에서는 펌프유닛(130)을 모듈레이터블록(110)에 조립하기 전에 인렛 플레이트(173)의 플랜지부(174)가 피스톤가이드(150)의 걸림턱(151)에 걸리게 됨으로써, 인렛 플레이트(173)와 펌프 캡(160)의 사이에 배치되어 피스톤(140)을 탄성 지지하는 피스톤 스프링(145)에 의해 피스톤(140)이 이탈되는 것을 방지하게 된다. 이에 따라 펌프유닛(130)을 모듈레이터블록(110)에 조립하기 전에 하나의 유닛형태로 펌프유닛(130)을 관리할 수 있게 된다.That is, in the embodiment of the present invention, before the pump unit 130 is assembled to the modulator block 110, the flange portion 174 of the inlet plate 173 is caught by the engagement protrusion 151 of the piston guide 150, The piston 140 is disposed between the inlet plate 173 and the pump cap 160 to prevent the piston 140 from being detached by the piston spring 145 elastically supporting the piston 140. Accordingly, the pump unit 130 can be managed as one unit type before the pump unit 130 is assembled to the modulator block 110.

또, 펌프유닛(130)을 모듈레이터블록(110)에 조립한 후에는 니들베어링(123)이 피스톤(140)과 닿으면서 인렛 플레이트(173)의 플랜지부(174)와 피스톤가이드(150)의 걸림턱(151)이 떨어지게 되고, 모터(121)의 회전운동에는 지속적으로 플랜지부(174)와 걸림턱(151)이 간격을 유지하며 정상 동작하게 된다.After the pump unit 130 is assembled to the modulator block 110, the needle bearing 123 contacts the piston 140, and the flange portion 174 of the inlet plate 173 and the piston guide 150 are engaged The flange portion 174 and the engaging jaw 151 maintain a gap between the flange portion 174 and the engaging jaw 151 so that the jaw 151 is normally operated.

펌프 캡(160)은 도시된 바와 같이 보어(111)의 내부에 압입되는데, 압축실(117)과 토출실(118)로 구획된다. 이러한 펌프 캡(160)에는 압축실(117)과 토출실(118)을 연통시키는 오리피스(191)가 형성되는 시트하우징(190)이 압입된다.The pump cap 160 is press-fitted into the bore 111 as shown, and is divided into a compression chamber 117 and a discharge chamber 118. A seat housing 190 having an orifice 191 for communicating the compression chamber 117 and the discharge chamber 118 is press-fitted into the pump cap 160.

이때의 오리피스(191)는 토출실(118)에 설치되는 아웃렛밸브(180)에 의해 개폐된다. 아웃렛밸브(180)는 오리피스(191)를 막는 구형상의 제2차폐부재(181)와, 제2차폐부재(181)를 탄성 지지하는 제2밸브스프링(182)을 포함한다. 이때의 제2차폐부재(181)는 제2밸브스프링(182)의 탄성력에 의해 오리피스(191)를 막고 있다가 압축실(117)의 오일이 피스톤(140)에 의해 압축될 때 오일의 압력에 의해 밀려 오리피스(191)를 개방시킨다.At this time, the orifice 191 is opened and closed by an outlet valve 180 provided in the discharge chamber 118. The outlet valve 180 includes a spherical second shielding member 181 for blocking the orifice 191 and a second valve spring 182 for elastically supporting the second shielding member 181. At this time, the second shielding member 181 closes the orifice 191 by the elastic force of the second valve spring 182, and when the oil in the compression chamber 117 is compressed by the piston 140, So as to open the orifice 191.

따라서, 본 발명의 실시예에서는 펌프유닛(130)을 모듈레이터블록(110)에 조립하기 전 인렛밸브(170)의 인렛 플레이트(173)의 플랜지부(174)가 피스톤가이드(150)의 걸림턱(151)에 걸린 상태로 있으므로 피스톤 스프링(145)의 탄성력에 의해 피스톤(140)이 피스톤가이드(150)로부터 이탈되는 것을 방지할 수 있어 하나의 유닛으로 펌프유닛(130)을 관리할 수 있다.Therefore, in the embodiment of the present invention, before the pump unit 130 is assembled to the modulator block 110, the flange portion 174 of the inlet plate 173 of the inlet valve 170 is engaged with the engaging jaw The piston 140 can be prevented from being separated from the piston guide 150 by the elastic force of the piston spring 145 and the pump unit 130 can be managed by one unit.

110 : 모듈레이터블록 111 : 보어
120 : 모터유닛 130 : 펌프유닛
140 : 피스톤 141 : 오일유로
143 : 틈새 150 : 피스톤가이드
150a : 피스톤가이드의 제1내경 150b : 피스톤가이드의 제2내경
151 : 걸림턱 160 : 펌프 캡
170 : 인렛밸브 171 : 제1차폐부재
172 : 제1밸브스프링 173 : 인렛 플레이트
174 : 인렛 플레이트의 플랜지부 180 : 아웃렛밸브110: modulator block 111: bore
120: motor unit 130: pump unit
140: piston 141: oil passage
143: Clearance 150: Piston guide
150a: first inner diameter of the piston guide 150b: second inner diameter of the piston guide
151: latching jaw 160: pump cap
170: inlet valve 171: first shielding member
172: first valve spring 173: inlet plate
174: flange portion of inlet plate 180: outlet valve

Claims (4)

모듈레이터블록(110)의 보어(111)에서 왕복운동 가능하게 마련되는 피스톤(140)과, 상기 피스톤(140)의 왕복운동을 가이드하도록 내면에 상기 피스톤(140)이 압입되는 피스톤가이드(150)와, 상기 피스톤가이드(150)와 결합하여 상기 모듈레이터블록(110)에 상기 피스톤가이드(150)를 고정시키는 펌프 캡(160)과, 상기 피스톤 (140)에 형성되는 오일유로(141)를 개폐하는 인렛밸브(170)와, 상기 인렛밸브(170)와 상기 펌프 캡(160)의 사이에 배치되어 상기 피스톤(140)을 탄성 지지하는 피스톤 스프링(145)을 포함하는 펌프유닛(130)을 구비하는 전자제어식 브레이크 시스템에 있어서,
상기 인렛밸브(170)는 상기 오일유로(141)를 막는 차폐부재(171)와, 상기 차폐부재(171)를 탄성 지지하는 밸브스프링(172)과, 상기 밸브스프링(172)을 지지하기 위해 상기 피스톤(140)의 단부에 결합되며 상기 피스톤가이드(150)의 내경 방향으로 상기 피스톤(140)의 외경보다 더 큰 반경을 가지도록 돌출되는 플랜지부(174)를 갖는 인렛 플레이트(173)를 포함하고,
상기 피스톤가이드(150)는 상기 플랜지부(174)가 수용되는 제1내경(150a)과 상기 피스톤(140)이 접하는 제2내경(150b)을 가지도록 걸림턱(151)이 형성되어 상기 플랜지부(174)가 상기 걸림턱(151)에 걸려 상기 인렛 플레이트(173)가 결합된 상기 피스톤(140)의 이탈을 방지하는 전자제어식 브레이크 시스템.A piston 140 which is reciprocatably movable in a bore 111 of the modulator block 110 and a piston guide 150 in which the piston 140 is inserted into the inner surface of the piston 140 so as to guide the reciprocating motion of the piston 140, A pump cap 160 coupled to the piston guide 150 to fix the piston guide 150 to the modulator block 110, And a pump unit 130 including a valve 170 and a piston spring 145 disposed between the inlet valve 170 and the pump cap 160 to elastically support the piston 140. [ In a controlled braking system,
The inlet valve 170 includes a shielding member 171 for blocking the oil passage 141, a valve spring 172 for elastically supporting the shielding member 171, And an inlet plate 173 coupled to an end of the piston 140 and having a flange portion 174 projecting radially inwardly of the piston guide 150 to have a larger radius than the outer diameter of the piston 140 ,
The piston guide 150 is formed with a locking protrusion 151 so as to have a first inner diameter 150a in which the flange portion 174 is received and a second inner diameter 150b in which the piston 140 is in contact therewith, (174) is caught by the latching jaw (151) to prevent the piston (140) with the inlet plate (173) from being disengaged. 제1항에 있어서,
상기 피스톤스프링(145)은 일단이 상기 펌프 캡(160)에 지지되고 타단이 상기 플랜지부(174)에 지지되는 것을 특징으로 하는 전자제어식 브레이크 시스템.The method according to claim 1,
Wherein the piston spring (145) has one end supported by the pump cap (160) and the other end supported by the flange portion (174). 제2항에 있어서,
상기 플랜지부(174)는 상기 펌프유닛(130)이 상기 모듈레이터블록(110)에 조립되기 전 상기 피스톤스프링(145)의 탄성력에 의해 이동되어 상기 걸림턱(151)에 걸려지는 것을 특징으로 하는 전자제어식 브레이크 시스템.3. The method of claim 2,
The flange portion 174 is moved by the elastic force of the piston spring 145 and is caught by the engagement protrusion 151 before the pump unit 130 is assembled to the modulator block 110. [ Controlled brake system. 제1항에 있어서,
상기 피스톤(140)의 외면에는 원주방향을 따라 틈새(143)가 형성되어 상기 틈새(143)에 유입되는 유막으로 상기 피스톤(140)을 실링하는 것을 특징으로 하는 전자제어식 브레이크 시스템.The method according to claim 1,
Wherein a gap (143) is formed in the outer surface of the piston (140) along the circumferential direction to seal the piston (140) with an oil film flowing into the gap (143).
KR1020100044708A 2010-05-12 2010-05-12 Electronic control brake system KR101404086B1 (en)

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WO2018124727A1 (en) * 2016-12-27 2018-07-05 이래에이엠에스 주식회사 Piston pump for brake system of vehicle

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KR102528309B1 (en) * 2018-03-14 2023-05-03 에이치엘만도 주식회사 Hydraulic control device for break system and installation method of motor and pump of the same

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KR100591690B1 (en) * 2005-05-18 2006-06-20 주식회사 만도 Pump of electronic control brake system

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JP2005273581A (en) * 2004-03-25 2005-10-06 Bosch Corp Piston pump
KR100591690B1 (en) * 2005-05-18 2006-06-20 주식회사 만도 Pump of electronic control brake system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018124727A1 (en) * 2016-12-27 2018-07-05 이래에이엠에스 주식회사 Piston pump for brake system of vehicle
US11421678B2 (en) 2016-12-27 2022-08-23 Erae Ams Co., Ltd Piston pump for brake system of vehicle

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