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KR20110125132A - Hydraulic pump for electronic control brake system - Google Patents

Hydraulic pump for electronic control brake system Download PDF

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Publication number
KR20110125132A
KR20110125132A KR1020100044697A KR20100044697A KR20110125132A KR 20110125132 A KR20110125132 A KR 20110125132A KR 1020100044697 A KR1020100044697 A KR 1020100044697A KR 20100044697 A KR20100044697 A KR 20100044697A KR 20110125132 A KR20110125132 A KR 20110125132A
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KR
South Korea
Prior art keywords
piston
inlet
chamber
compression chamber
brake system
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Application number
KR1020100044697A
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Korean (ko)
Inventor
전재영
이충재
Original Assignee
주식회사 만도
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Application filed by 주식회사 만도 filed Critical 주식회사 만도
Priority to KR1020100044697A priority Critical patent/KR20110125132A/en
Publication of KR20110125132A publication Critical patent/KR20110125132A/en

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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
    • B60T13/66—Electrical control in fluid-pressure brake 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1002—Ball valves

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

PURPOSE: A hydraulic pump for an electric control type brake system is provided to reduce the number of component without the assembling of a valve sheet. CONSTITUTION: A hydraulic pump for an electric control type brake system comprises a piston(120), a pump cap(140), a sheet housing(145), an inlet valve(150) and an outlet valve(160). The piston is reciprocately installed in the inner one side of a bore formed in a modulate block(110). The modulate block has an inlet(112) and an outlet(113). The pump cap is installed in the inside other side of the bore and comprises a compression chamber(117) and a discharging chamber. The pump cap is formed to be extended to the outside of the piston. The sheet housing is pressed in the pump cap and comprises an orifice(146). The orifice communicates with the compression chamber and discharging chamber. The inlet valve is formed in the piston and switches the flow passage. The flow passage connects the inflow chamber(116) communicated with the inlet and compression chamber. The outlet valve switches the orifice.

Description

전자제어식 브레이크 시스템용 유압펌프{Hydraulic pump for electronic control brake system}Hydraulic pump for electronic control brake system

본 발명은 전자제어식 브레이크 시스템용 유압펌프에 관한 것으로, 더욱 상세하게는 구성 부품의 수를 줄일 수 있는 전자제어식 브레이크 시스템용 유압펌프에 관한 것이다.The present invention relates to a hydraulic pump for an electronically controlled brake system, and more particularly to an hydraulic pump for an electronically controlled brake system that can reduce the number of components.

일반적으로 차량에 장착되는 전자제어식 브레이크 시스템은 차량의 바퀴측으로 전해지는 제동유압을 단속하여 바퀴의 노면 슬립을 방지함으로써 안전한 제동이 이루어지게 하는 장치이다.In general, an electronically controlled brake system mounted on a vehicle is a device that prevents road slip of the wheel by regulating the braking hydraulic pressure transmitted to the wheel side of the vehicle, thereby ensuring safe braking.

이러한 전자제어식 브레이크 시스템은 다수개의 솔레노이드밸브와, 오일을 일시 저장하는 저압 어큐뮬레이터 및 고압 어큐뮬레이터와, 저압 어큐뮬레이터의 오일을 펌핑하기 위한 모터 및 펌프와, 솔레노이드밸브와 모터의 구동을 제어하기 위한 전자제어유닛을 포함하고 있으며, 이러한 구성요소들은 모듈레이트블럭에 컴팩트하게 내장되어 있다.The electronically controlled brake system includes a plurality of solenoid valves, low pressure accumulators and high pressure accumulators for temporarily storing oil, motors and pumps for pumping oil from low pressure accumulators, and electronic control units for controlling the operation of solenoid valves and motors. These components are compactly embedded in the modulated block.

도 1은 일반적인 전자제어식 브레이크 시스템의 유압회로도이다.1 is a hydraulic circuit diagram of a general electronically controlled brake system.

도 1에 도시된 바와 같이, 전자제어식 브레이크 시스템의 모듈레이터블럭(10)에는 내부에 형성된 유로를 개폐하는 다수의 솔레노이드밸브(11a,11b)와, 복귀하는 오일을 가압하기 위한 모터(13) 및 유압펌프(20), 유압펌프(20)의 상류측 및 하류측 유로 상에 각각 배치되는 저압 어큐뮬레이터(12) 및 고압 어큐뮬레이터(15)가 설치된다. 이러한 구성부품들은 모듈레이터블럭(10) 내부에 형성된 다수의 유로를 통해 상호 연결되어 있으며, 전자제어유닛(미도시)에 의해 각각 동작이 제어되면서 마스터 실린더(16)로부터 바퀴측 휠실린더(17)로 전달되는 제동유압을 단속하는 기능을 수행한다.As shown in FIG. 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 13 for pressurizing the returning oil, and a hydraulic pressure. The low pressure accumulator 12 and the high pressure accumulator 15 which are provided on the pump 20, the upstream and downstream flow paths of the hydraulic pump 20, respectively, are provided. These components are connected to each other through a plurality of flow paths formed in the modulator block 10, each of which is controlled by an electronic control unit (not shown) from the master cylinder 16 to the wheel-side wheel cylinder 17 It performs a function to control the delivered braking hydraulic pressure.

여기서 유압펌프(20)는 유압라인을 따라 저압 어큐뮬레이터(12) 쪽으로 복귀한 브레이크 오일을 가압하여 바퀴측 휠실린더(17)로 압송시킴으로써 바퀴의 제동이 이루어지게 한다.Here, the hydraulic pump 20 presses the brake oil returned to the low pressure accumulator 12 along the hydraulic line and pressurizes it to the wheel-side wheel cylinder 17 to brake the wheel.

도 2는 종래의 유압펌프를 개략적으로 나타낸 단면도이다.2 is a sectional view schematically showing a conventional hydraulic pump.

도 2에 도시된 바와 같이, 유압펌프(20)는 유입구(10a) 및 토출구(10b)를 갖는 모듈레이터블럭(10)에 설치되어 유입구(10a)를 통해 유입되는 오일을 압축시킨 후 압축된 오일을 토출구(10b)를 통해 토출시킨다.As shown in FIG. 2, the hydraulic pump 20 is installed in the modulator block 10 having the inlet port 10a and the outlet port 10b to compress the oil introduced through the inlet port 10a and compress the oil. It discharges through the discharge port 10b.

이러한 유압펌프(20)는 모듈레이터블럭(10)에 피스톤(30)과, 모듈레이터블럭(10)의 내부를 압축실(23)과 토출실(25)로 구획하는 밸브시트(40)와, 압축실(23)과 토출실(25)을 연통시키도록 밸브시트(40)에 구비되는 오리피스(41)를 개폐시키는 아웃렛밸브(50)와, 압축실(23)과 구분되도록 압축실(23)의 상류에 구비되는 유입실(21)과 압축실(23)을 연결하는 유로를 개폐시키는 인렛밸브(60)와, 유입구(10a)를 통해 유입되는 오일을 필터링하기 위한 필터(70)와, 토출실(25)을 밀폐시키기 위하여 모듈레이터블럭(10)에 결합되는 펌프 캡(80)을 포함한다.The hydraulic pump 20 includes a piston 30 in the modulator block 10, a valve seat 40 partitioning the interior of the modulator block 10 into a compression chamber 23 and a discharge chamber 25, and a compression chamber. Outlet valve 50 for opening and closing the orifice 41 provided in the valve seat 40 so as to communicate 23 and the discharge chamber 25, and upstream of the compression chamber 23 to be distinguished from the compression chamber 23 Inlet valve 60 for opening and closing the flow path connecting the inlet chamber 21 and the compression chamber 23 provided in the filter, a filter 70 for filtering the oil flowing through the inlet 10a, and the discharge chamber ( 25) a pump cap 80 coupled to the modulator block 10 to seal it.

이때, 아웃렛밸브(50)는 오리피스(41)를 막는 차폐부재(51)와, 차폐부재(51)를 탄성 지지하는 밸브스프링(53)과, 밸브스프링(53)을 지지하도록 밸브시트(40)의 단부에 결합되는 아웃렛 플레이트(55)를 포함한다.In this case, the outlet valve 50 includes a shielding member 51 for blocking the orifice 41, a valve spring 53 for elastically supporting the shielding member 51, and a valve seat 40 to support the valve spring 53. And an outlet plate 55 coupled to the end of the outlet plate 55.

그러나, 종래의 유압펌프(20)는 상대적으로 가격이 비싼 밸브시트(40)를 포함하고 있으므로 원가가 증가되는 문제점이 있다.However, since the conventional hydraulic pump 20 includes a valve seat 40 which is relatively expensive, the cost is increased.

본 발명은 이러한 문제점을 해결하기 위한 것으로서, 본 발명의 목적은 밸브시트가 조립되지 않아도 되는 전자제어식 브레이크 시스템용 유압펌프를 제공하는 데 있다.The present invention has been made to solve such a problem, and an object of the present invention is to provide a hydraulic pump for an electronically controlled brake system in which the valve seat does not need to be assembled.

상기와 같은 목적을 달성하기 위한 본 발명에 따른 전자제어식 브레이크 시스템용 유압펌프는 유입구 및 토출구를 갖는 모듈레이트블럭에 형성된 보어의 내부 일측에 왕복이동 가능하게 설치되는 피스톤과, 상기 보어의 내부 타측에 설치되어 압축실과 토출실이 형성되며, 상기 피스톤의 외면 측으로 연장되게 형성된 펌프 캡과, 상기 펌프 캡에 압입되며, 상기 압축실과 상기 토출실을 연통시키는 오리피스가 형성되는 시트하우징과, 상기 피스톤에 형성되어 상기 유입구와 연통되는 유입실과 상기 압축실을 연결하는 유로를 개폐시키는 인렛밸브와, 상기 오리피스를 개폐시키는 아웃렛밸브를 포함한다.Hydraulic pump for an electronically controlled brake system according to the present invention for achieving the above object is a piston which is installed reciprocally on one side of the bore formed in the modulated block having the inlet and outlet, and the other side of the bore A compression chamber and a discharge chamber, wherein the pump cap is formed to extend toward the outer surface side of the piston, a seat housing press-fitted into the pump cap, and an orifice communicating with the compression chamber and the discharge chamber, and formed in the piston. And an inlet valve for opening and closing a flow path connecting the inlet chamber and the compression chamber in communication with the inlet port, and an outlet valve for opening and closing the orifice.

상기 피스톤의 외면에는 실하우징이 장착되고,Seal housing is mounted on the outer surface of the piston,

상기 펌프 캡은 상기 피스톤과 상기 실하우징의 사이로 압입된다.The pump cap is press-fitted between the piston and the seal housing.

상술한 바와 같이 본 발명에 따른 전자제어식 브레이크 시스템의 유압펌프는 피스톤 측으로 연장되게 형성되고 그 내부에 오리피스가 형성되는 시트하우징이 압입되는 펌프 캡을 구비함에 따라 구성부품 즉, 밸브시트를 줄일 수 있다.As described above, the hydraulic pump of the electronically controlled brake system according to the present invention can reduce the components, that is, the valve seat, as the pump cap is formed to extend to the piston side and the seat housing into which the orifice is formed is press-fitted. .

도 1은 일반적인 전자제어식 브레이크 시스템의 유압회로도이다.
도 2는 종래의 전자제어식 브레이크 시스템용 유압펌프를 개략적으로 나타낸 단면도이다.
도 3은 본 발명에 따른 전자제어식 브레이크 시스템용 유압펌프를 개략적으로 나타낸 단면도이다.1 is a hydraulic circuit diagram of a general electronically controlled brake system.
2 is a schematic cross-sectional view of a conventional hydraulic pump for an electronically controlled brake system.
3 is a schematic cross-sectional view of a hydraulic pump for an electronically controlled brake system according to the present invention.

도 3을 참고하면, 본 발명에 따른 전자제어식 브레이크 시스템용 유압펌프(100)는 유입구(112) 및 토출구(113)를 갖는 모듈레이터블럭(110)에 설치된다. 모듈레이터블럭(110)의 일측면 중앙부에는 좌우측에 배치되는 한 쌍의 유압펌프(100)를 구동시키기 위해 스핀들(14)이 돌출되는 모터(13,도 1 참조)가 설치된다. 모터(13)의 스핀들(14,도 1 참조)은 편심축(105)과 일체로 형성되어 각 유압펌프(100)의 피스톤(120) 사이에 배치됨으로써, 한 쌍의 유압펌프(100)가 하나의 모터(100)에 의해 서로 180도 위상차를 가지면서 구동하게 된다.Referring to FIG. 3, the hydraulic pump 100 for an electronically controlled brake system according to the present invention is installed in a modulator block 110 having an inlet 112 and an outlet 113. A motor 13 (see FIG. 1) in which the spindle 14 protrudes is installed at a central portion of one side of the modulator block 110 to drive a pair of hydraulic pumps 100 disposed on the left and right sides. The spindle 14 of the motor 13 (see FIG. 1) is integrally formed with the eccentric shaft 105 and disposed between the pistons 120 of each hydraulic pump 100, whereby a pair of hydraulic pumps 100 are provided. The motor 100 is driven while having a phase difference of 180 degrees from each other.

유압펌프(100)는 모듈레이터블럭(110)에 형성되는 보어(111)의 내부 일측에 왕복이동 가능하게 설치되는 피스톤(120)과, 보어(111)의 내부 타측에 설치되어 압축실(117)과 토출실(118)이 형성된 펌프 캡(140)과, 펌프 캡(140)의 내부에 압입되는 시트하우징(145)과, 펌프 캡(140)의 내부에 설치된 인렛밸브(150)와 아웃렛밸브(160)를 포함한다.Hydraulic pump 100 is a piston 120 is installed on the inner side of the bore 111 formed in the modulator block 110 so as to reciprocate, and the other side of the bore 111 is installed in the compression chamber 117 and A pump cap 140 having a discharge chamber 118 formed therein, a seat housing 145 press-fitted into the pump cap 140, an inlet valve 150 and an outlet valve 160 provided inside the pump cap 140. ).

모듈레이터블럭(110)에 형성되는 보어(111)는 유입구(112)와 연통되는 유입실(116)과, 유입실(116)로부터 이동된 오일이 피스톤 작용에 의해 압축되는 압축실(117)과, 압축실(117)의 하류에 구비되고 토출구(113)와 연통되는 토출실(118)로 구분된다. 이때, 유입실(116)과 압축실(117)은 피스톤(20) 및 실하우징(134)에 의해 구획되고, 압축실(117)과 토출실(118)은 펌프 캡(140)의 내부에 압입되는 시트하우징(145)에 의해 구획된다.The bore 111 formed in the modulator block 110 includes an inlet chamber 116 in communication with the inlet 112, a compression chamber 117 in which oil moved from the inlet chamber 116 is compressed by a piston action, It is divided into the discharge chamber 118 which is provided downstream of the compression chamber 117 and communicates with the discharge port 113. In this case, the inflow chamber 116 and the compression chamber 117 are partitioned by the piston 20 and the seal housing 134, and the compression chamber 117 and the discharge chamber 118 are press-fitted into the pump cap 140. Partitioned by the seat housing 145.

피스톤(120)은 모터(13)에 구비되는 편심축(105)이 위치하는 작동실(106)에서 유입실(116) 및 압축실(117)에 이르는 길이를 갖는다. 이러한 피스톤(120)의 내경에는 유입실(116)과 압축실(117)을 상호 연통시키는 유로(121)가 구비되며, 이러한 유로(121)는 인렛밸브(150)에 의해 개폐된다.The piston 120 has a length from the operating chamber 106 where the eccentric shaft 105 provided in the motor 13 is located to the inflow chamber 116 and the compression chamber 117. The inner diameter of the piston 120 is provided with a flow path 121 for communicating the inflow chamber 116 and the compression chamber 117 with each other, the flow path 121 is opened and closed by the inlet valve 150.

피스톤(120)의 외경에는 작동실(106)과 유입실(116)의 사이를 실링하기 위한 제1실링부재(131)와, 피스톤(120)의 왕복운동 시 제1실링부재(131)의 손상을 방지하는 제1백업링(132)이 구비된다. 이때, 피스톤(120)의 외경에는 제1실링부재(131)가 장착되는 제1실링부재 장착홈(122)이 형성된다. 즉, 제1실링부재(131)는 피스톤(120)의 왕복운동 시 피스톤(120)의 움직임에 연동된다.The outer diameter of the piston 120, the first sealing member 131 for sealing between the operating chamber 106 and the inlet chamber 116, and damage of the first sealing member 131 during the reciprocating movement of the piston 120 The first backup ring 132 is provided to prevent. At this time, the outer diameter of the piston 120 is formed with a first sealing member mounting groove 122 on which the first sealing member 131 is mounted. That is, the first sealing member 131 is linked to the movement of the piston 120 during the reciprocating movement of the piston 120.

또, 피스톤(120)의 외경 즉, 제1실링부재(131)의 후단부 측에는 유입실(116)에 설치되어 유입구(112)를 통해 유입실(116)로 유입되는 오일을 필터링하는 필터조립체(135)가 설치된다. 이러한 필터조립체(135)는 보어(111)에 압입되어 제1피스톤(121)을 가이드하는 필터하우징(136)과, 필터하우징(136)의 둘레에 구비되는 복수의 개구에 설치되어 필터하우징(136)의 외부에서 필터하우징(136)의 내부로 유입되는 오일을 필터링하는 필터부재(137)를 포함한다.In addition, the outer diameter of the piston 120, that is, the rear end side of the first sealing member 131 is installed in the inlet chamber 116 to filter the oil flowing into the inlet chamber 116 through the inlet 112 ( 135) is installed. The filter assembly 135 is installed in a plurality of openings provided around the filter housing 136 and the filter housing 136 that are press-fitted into the bore 111 to guide the first piston 121, and the filter housing 136 It includes a filter member 137 for filtering the oil flowing into the interior of the filter housing 136 from the outside.

또, 피스톤(120)의 외경 즉, 필터하우징(136)의 후단부 측에는 실하우징(134)이 마련된다. 이러한 실하우징(134)의 내경과 피스톤(120)의 외경 사이에는 제2실링부재(133)가 구비된다. 그리고 실하우징(134)의 후단부 측 내경에는 펌프 캡의(140)이 압입된다.In addition, a seal housing 134 is provided at the outer diameter of the piston 120, that is, at the rear end side of the filter housing 136. The second sealing member 133 is provided between the inner diameter of the seal housing 134 and the outer diameter of the piston 120. In addition, the pump cap 140 is press-fitted into the rear end side inner diameter of the seal housing 134.

인렛밸브(150)는 피스톤(120)에 형성된 유로(121)를 막는 구형상의 제1차폐부재(151)와, 제1차폐부재(151)를 탄성 지지하는 제1밸브스프링(153)와, 피스톤(120)의 후단부에 결합되어 제1밸브스프링(153)을 지지하는 인렛 플레이트(155)를 포함한다. The inlet valve 150 has a spherical first shielding member 151 for blocking the flow passage 121 formed in the piston 120, a first valve spring 153 for elastically supporting the first shielding member 151, and a piston. It is coupled to the rear end of the 120 includes an inlet plate 155 for supporting the first valve spring 153.

제1차폐부재(151)는 제1밸브스프링(153)의 탄성력에 의해 유로(121)를 막고 있다가 압축실(117)에서 오일이 배출되어 압축실(117)의 압력이 떨어지면 유로(121)와 압축실(117) 사이의 압력차에 의해 유로(121)를 개방시킨다.The first shielding member 151 blocks the flow passage 121 by the elastic force of the first valve spring 153, but when the oil is discharged from the compression chamber 117 and the pressure in the compression chamber 117 falls, the flow passage 121 is closed. And the flow path 121 are opened by the pressure difference between the compression chamber 117.

제1밸브스프링(153)은 상술한 바와 같이 제1차폐부재(151)를 탄성 지지하며, 이를 위해 제1밸브스프링(153)은 피스톤(120)의 내부에서 제1차폐부재(151)와 후술할 제1시트하우징(170) 사이에 설치된다.The first valve spring 153 elastically supports the first shielding member 151 as described above, and for this purpose, the first valve spring 153 is described later with the first shielding member 151 in the piston 120. It is installed between the first seat housing 170 to be.

인렛 플레이트(155)는 상술한 바와 같이 피스톤(120)의 후단부에 결합된다. 이러한 인렛 플레이트(155)의 외측에는 피스톤(120)을 편심축(105) 쪽으로 밀어 편심축(105)과 함께 피스톤(120)을 왕복 이동시키는 역할을 하는 피스톤스프링(125)이 배치된다. The inlet plate 155 is coupled to the rear end of the piston 120 as described above. Outside the inlet plate 155 is a piston spring 125 which serves to push the piston 120 toward the eccentric shaft 105 to reciprocate the piston 120 together with the eccentric shaft 105 is disposed.

펌프 캡(140)은 상술한 바와 같이 보어(111)의 내부 타측에 설치되어 압축실(117)과 토출실(118)이 형성된다. 이러한 펌프 캡(140)에는 이 펌프 캡(140)의 내부를 압축실(117)과 토출실(118)로 구획하며, 압축실(117)과 토출실(118)을 연통시키는 오리피스(146)가 형성되는 시트하우징(145)이 압입되도록 설치된다. As described above, the pump cap 140 is installed on the other side of the bore 111 to form the compression chamber 117 and the discharge chamber 118. The pump cap 140 divides the interior of the pump cap 140 into a compression chamber 117 and a discharge chamber 118, and an orifice 146 for communicating the compression chamber 117 and the discharge chamber 118 is provided. The seat housing 145 is formed to be press-fitted.

이때의 오리피스(146)는 토출실(118)에 설치되는 아웃렛밸브(160)에 의해 개폐되며, 이러한 아웃렛밸브(160)는 시트하우징(145)에 의해 형성되는 토출실(118)에 설치된다. At this time, the orifice 146 is opened and closed by the outlet valve 160 installed in the discharge chamber 118, the outlet valve 160 is installed in the discharge chamber 118 formed by the seat housing 145.

아웃렛밸브(160)는 오리피스(146)를 막는 구형상의 제2차폐부재(161)와, 제2차폐부재(161)를 탄성 지지하는 제2밸브스프링(163)을 포함한다. 제2차폐부재(161)는 제2밸브스프링(163)의 탄성력에 의해 오리피스(146)를 막고 있다가 압축실(117)의 오일이 피스톤(120)에 의해 압축될 때 오일의 압력에 의해 밀려 시트하우징(145)에서 떨어지면서 오리피스(146)를 개방시킨다.The outlet valve 160 includes a spherical second shielding member 161 that blocks the orifice 146 and a second valve spring 163 that elastically supports the second shielding member 161. The second shield member 161 blocks the orifice 146 by the elastic force of the second valve spring 163 and is pushed by the oil pressure when the oil in the compression chamber 117 is compressed by the piston 120. The orifice 146 is opened while falling from the seat housing 145.

또, 펌프 캡(140)은 도시된 바와 같이 전단부가 피스톤(120)과 실하우징(134)의 사이에 압입되도록 마련된다. 즉, 본 발명의 실시예에서 펌프 캡(140)은 피스톤(120)의 일부를 감싸도록 피스톤(120) 측으로 연장되게 마련되어 실하우징(134)의 내경에 압입되고, 펌프 맵(140)의 내부에 시트하우징(145)이 압입됨에 따라 별도의 밸브시트(40, 도 1 참조)가 구비되는 종래와는 달리 밸브시트의 구성이 생략될 수 있다.In addition, the pump cap 140 is provided so that the front end portion is pressed between the piston 120 and the seal housing 134 as shown. That is, in the embodiment of the present invention, the pump cap 140 is provided to extend toward the piston 120 to surround a portion of the piston 120 is press-fitted into the inner diameter of the seal housing 134, the inside of the pump map 140 As the seat housing 145 is press-fitted, unlike a conventional valve seat 40 (see FIG. 1), the configuration of the valve seat may be omitted.

또, 펌프 캡(140)에는 오리피스(146)가 아웃렛밸브(160)에 의해 개방될 때 오일을 토출구(113)로 유동시키도록 토출실(118)과 토출구(113)를 연결하는 유동유로(141)가 형성된다. In addition, the pump cap 140 has a flow passage 141 connecting the discharge chamber 118 and the discharge port 113 to flow oil to the discharge port 113 when the orifice 146 is opened by the outlet valve 160. ) Is formed.

또, 펌프 캡(140)에는 도시된 바와 같이 아웃렛밸브(160)의 제2차폐부재(161)의 일부 및 제2밸브스프링(163)이 배치될 수 있도록 지지홈(145)이 형성된다. 이때의 지지홈(145)은 제2밸브스프링(163)을 직접적으로 지지하는 제1지지홈(146)과, 오리피스(146)의 개방 시 제2시트하우징(145)으로부터 떨어지는 제2차폐부재(161)의 일부를 지지하는 제2지지홈(147)을 포함한다.
In addition, the pump cap 140 is formed with a support groove 145 so that a part of the second shielding member 161 of the outlet valve 160 and the second valve spring 163 may be disposed as shown. In this case, the support groove 145 may include a first support groove 146 directly supporting the second valve spring 163 and a second shield member falling from the second seat housing 145 when the orifice 146 is opened. And a second support groove 147 for supporting a portion of the 161.

상기와 같은 구조를 가진 전자제어식 브레이크 시스템용 유압펌프(100)에서 유입구(112)를 통해 유입실(116)로 유입된 오일은 필터조립체(135)의 내부로 유입된 후 피스톤(120)의 중앙에 형성된 유로(121)로 이동된다. 그리고 피스톤(120)이 편심축(105)에 의해 압축되어 압축실(117)로 이동하면 압축실(117)의 오일이 압축되면서, 오일의 압축력에 의해 아웃렛밸브(160)의 제2차폐부재(161)가 시트하우징(145)로부터 떨어져 오리피스(146)가 개방된다. 이때, 압축실(117)의 오일은 펌프 캡(140)의 유동유로(141)를 통행 토출구(113)로 토출된다. The oil introduced into the inlet chamber 116 through the inlet 112 in the hydraulic pump 100 for the electronically controlled brake system having the structure as described above is introduced into the filter assembly 135 and then the center of the piston 120. It moves to the flow path 121 formed in the. When the piston 120 is compressed by the eccentric shaft 105 and moves to the compression chamber 117, the oil of the compression chamber 117 is compressed, and the second shielding member of the outlet valve 160 is compressed by the oil compression force. 161 is away from seat housing 145 to open orifice 146. At this time, the oil in the compression chamber 117 is discharged through the flow passage 141 of the pump cap 140 to the passage discharge port 113.

계속해서, 편심축(105)이 피스톤(120)에서 멀어지면 피스톤(120)은 피스톤스프링(125)의 탄성 복원력에 의해 작동실(106) 쪽으로 밀려난다. 이때, 압축실(117)의 압력이 피스톤(120)의 유로의 압력보다 낮아져 인렛밸브(150)의 제1차폐부재(151)가 피스톤(120)에서 떨어져 유로(121)가 개방되고, 유로의 오일이 압축실(117)로 공급된다.Subsequently, when the eccentric shaft 105 moves away from the piston 120, the piston 120 is pushed toward the operating chamber 106 by the elastic restoring force of the piston spring 125. At this time, the pressure of the compression chamber 117 is lower than the pressure of the flow path of the piston 120, the first shield member 151 of the inlet valve 150 is separated from the piston 120 to open the flow path 121, Oil is supplied to the compression chamber 117.

따라서, 본 발명의 실시예에서는 펌프 캡(140)이 피스톤(120)의 외면 측으로 연장되게 형성되고 펌프 캡(140)의 내부에 시트하우징(145)이 압입됨에 따라 상대적으로 가격이 비싼 밸브시트를 삭제할 수 있으므로 원가가 절감된다.Therefore, in the exemplary embodiment of the present invention, the pump cap 140 is formed to extend toward the outer surface side of the piston 120, and the seat housing 145 is press-fitted into the pump cap 140 so that a relatively expensive valve seat is formed. It can be deleted, reducing the cost.

110 : 모듈레이터블럭 111 : 보어
112 : 유입구 113 : 토출구
116 : 유입실 117 : 압축실
118 : 토출실 120 : 피스톤
121 : 유로 125 : 실하우징
130 : 밸브시트 131 : 오리피스
133 : 유동홈 140 : 인렛밸브
141 : 제1차폐부재 143 : 제1밸브스프링
150 : 아웃렛밸브 151 : 제2차폐부재
153 : 제2밸브스프링 155 : 지지홈
156 : 제1지지홈 157 : 제2지지홈
160 : 필터조립체 170 : 펌프 캡110: modulator block 111: bore
112: inlet port 113: discharge port
116: inlet chamber 117: compression chamber
118: discharge chamber 120: piston
121: Euro 125: Seal housing
130: valve seat 131: orifice
133: flow groove 140: inlet valve
141: first shield member 143: first valve spring
150: outlet valve 151: second shield member
153: second valve spring 155: support groove
156: first support groove 157: second support groove
160: filter assembly 170: pump cap

Claims (2)

유입구(112) 및 토출구(113)를 갖는 모듈레이트블럭(110)에 형성된 보어(111)의 내부 일측에 왕복이동 가능하게 설치되는 피스톤(120)과,
상기 보어(111)의 내부 타측에 설치되어 압축실(117)과 토출실(118)이 형성되며, 상기 피스톤(120)의 외면 측으로 연장되게 형성된 펌프 캡(140)과,
상기 펌프 캡(140)에 압입되며, 상기 압축실(117)과 상기 토출실(118)을 연통시키는 오리피스(146)가 형성되는 시트하우징(145)과,
상기 피스톤(120)에 형성되어 상기 유입구(112)와 연통되는 유입실(116)과 상기 압축실(117)을 연결하는 유로(121)를 개폐시키는 인렛밸브(150)와,
상기 오리피스(146)를 개폐시키는 아웃렛밸브(160)를 포함하는 것을 특징으로 하는 전자제어식 브레이크 시스템용 유압펌프.A piston 120 installed in a reciprocating manner on an inner side of the bore 111 formed in the modulated block 110 having the inlet 112 and the outlet 113,
A pump cap 140 installed at the other inner side of the bore 111 to form a compression chamber 117 and a discharge chamber 118, and extend to the outer surface side of the piston 120;
A seat housing 145 press-fitted into the pump cap 140 and having an orifice 146 communicating with the compression chamber 117 and the discharge chamber 118;
An inlet valve 150 formed on the piston 120 to open and close the flow passage 121 connecting the inlet chamber 116 and the compression chamber 117 to communicate with the inlet 112;
The hydraulic pump for an electronically controlled brake system, characterized in that it comprises an outlet valve (160) for opening and closing the orifice (146). 제 1항에 있어서,
상기 피스톤(120)의 외면에는 실하우징(134)이 장착되고,
상기 펌프 캡(140)은 상기 피스톤(120)과 상기 실하우징(134)의 사이로 압입되는 것을 특징으로 하는 전자제어식 브레이크 시스템용 유압펌프.The method of claim 1,
Seal housing 134 is mounted on the outer surface of the piston 120,
The pump cap 140 is a hydraulic pump for an electronically controlled brake system, characterized in that the press-in between the piston 120 and the seal housing (134).
KR1020100044697A 2010-05-12 2010-05-12 Hydraulic pump for electronic control brake system KR20110125132A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100044697A KR20110125132A (en) 2010-05-12 2010-05-12 Hydraulic pump for electronic control brake system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100044697A KR20110125132A (en) 2010-05-12 2010-05-12 Hydraulic pump for electronic control brake system

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KR20110125132A true KR20110125132A (en) 2011-11-18

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