KR20100098847A - Brake for vehicle - Google Patents

Brake for vehicle Download PDF

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Publication number
KR20100098847A
KR20100098847A KR1020090017525A KR20090017525A KR20100098847A KR 20100098847 A KR20100098847 A KR 20100098847A KR 1020090017525 A KR1020090017525 A KR 1020090017525A KR 20090017525 A KR20090017525 A KR 20090017525A KR 20100098847 A KR20100098847 A KR 20100098847A
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KR
South Korea
Prior art keywords
pedal
simulator
brake
master cylinder
plunger
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KR1020090017525A
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Korean (ko)
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KR101287372B1 (en
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양이진
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주식회사 만도
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Priority to KR1020090017525A priority Critical patent/KR101287372B1/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
    • B60T13/74—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 electrical assistance or drive
    • B60T13/745—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 electrical assistance or drive acting on a hydraulic system, e.g. a 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
    • B60T13/66—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
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/04—Brake-action initiating means for personal initiation foot actuated
    • B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
    • 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
    • B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
    • B60T8/4081—Systems with stroke simulating devices for driver input

Abstract

PURPOSE: A vehicle brake is provided to reduce the number of parts and the size of a system by a pedal simulator integrated with a boosting device. CONSTITUTION: A vehicle brake comprises an input shaft(310), an actuator housing(200), a pedal detecting device(500), a pedal simulator(250) and a master cylinder(100). The input shaft is connected to a brake pedal(300) operated by a driver in braking. The actuator housing is connected to an electric motor(410) and is fixed to the vehicle. The pedal detecting device comprises a pedal travel sensor(510) and a pedal stroke sensor(530) to detect the stepping force of the driver. The pedal simulator permits the repulsive force of the brake pedal. The master cylinder forms the braking pressure by the brake pedal to transfer the oil pressure to a wheel brake.

Description

차량용 브레이크{BRAKE FOR VEHICLE}Automotive brakes {BRAKE FOR VEHICLE}

본 발명은 차량용 브레이크에 관한 것으로서, 더욱 상세하게는 브레이크페달 반력을 내주는 페달시뮬레이터가 부스팅 장치 내부에 일체화 되어 설치된 차량용 브레이크에 관한 것이다.The present invention relates to a vehicle brake, and more particularly, to a vehicle brake in which a pedal simulator for providing a brake pedal reaction force is integrated into a boosting device.

일반적으로 브레이크시스템은 정상 작동 모드에서는 운전자가 브레이크페달을 밟으면 변위센서로부터 브레이크페달의 변위를 감지하여 페달 시뮬레이터의 마스터실린더와 휠과의 유로를 분리시키고, 압력센서로부터의 압력신호에 따라 ECU에서 휠 압력을 계산하여 각 휠의 압력을 독립적인 피드백제어를 통해서 조절한다.In general, the brake system detects the displacement of the brake pedal from the displacement sensor when the driver presses the brake pedal in normal operation mode to separate the flow path between the master cylinder of the pedal simulator and the wheel, and the wheel in the ECU according to the pressure signal from the pressure sensor. The pressure is calculated and the pressure on each wheel is adjusted through independent feedback control.

이때, 운전자의 제동의지를 감지하고 페달 반력을 내주기 위하여 종래 도 1과 같이, 마스터실린더(10)와 개구부(13)를 통하여 시뮬레이션 피스톤(41)과 시뮬레이션 피스톤(41)을 탄성지지하는 시뮬레이션 스프링(42)을 포함한 시뮬레이터(40)가 포함된다. 상기와 같은 시뮬레이터(40)를 구비한 종래의 마스터실린더(10)는 정상 작동 모드시 운전자가 브레이크 페달을 밟으면 그 압력이 제1피스톤(20)을 통해 마스터실린더(10)에 전달되며, 그 압력은 제1피스톤(20)을 지지하는 제1스프링(22)에 의해 제2피스톤(30)으로 전달되고, 이때 NO밸브에 의해 제1챔 버(21)와 제2챔버(31)에서 휠 실린더(미도시)로 각각 연통된 유로(미도시)가 폐쇄되어 브레이크액이 흘러나갈 곳이 없어지고, 제1피스톤(20)과 제2피스톤(30)은 더 이상 전진하지 못하게 되며, 계속해서 운전자가 페달을 밟는 압력이 증가하면 제1피스톤(20)이 제1스프링(22)을 압축시키면서 계속 전진하고, 제1챔버(21)의 브레이크액이 보어 단차부(11)와 실링요소(36)사이의 유로를 통하여 시뮬레이션 챔버(43)로 흘러들어 간다. 이때 시뮬레이션 스프링(42)에 의한 힘이 시뮬레이션 챔버(43) 및 제1챔버(21)내에 압력을 형성하게 되고, 그로 인하여 운전자는 답입감을 느끼게 된다.At this time, in order to sense the driver's braking will and to exert a pedal reaction force, as shown in FIG. 1, a simulation spring elastically supporting the simulation piston 41 and the simulation piston 41 through the master cylinder 10 and the opening 13 ( A simulator 40 including 42 is included. In the conventional master cylinder 10 having the simulator 40 as described above, when the driver presses the brake pedal in the normal operation mode, the pressure is transmitted to the master cylinder 10 through the first piston 20, and the pressure thereof. Is transferred to the second piston 30 by the first spring 22 supporting the first piston 20, and at this time, the wheel cylinder in the first chamber 21 and the second chamber 31 by the NO valve. Each flow path (not shown) connected to each other (not shown) is closed, and there is no place for the brake fluid to flow out, and the first piston 20 and the second piston 30 are no longer moved, and the driver continues. When the pressure on the pedal increases, the first piston 20 continues to compress while compressing the first spring 22, and the brake fluid of the first chamber 21 is seen in the bore step 11 and the sealing element 36. It flows into the simulation chamber 43 through the flow path between them. At this time, the force by the simulation spring 42 forms a pressure in the simulation chamber 43 and the first chamber 21, and the driver feels a depression.

또한, 비정상 작동 모드에서는 차단밸브가 NO(Normally Open)상태이므로 운전자에 의해서 마스터실린더의 제1챔버(21) 및 제2챔버(31)의 브레이크액은 그대로 휠 실린더로 흘러나가게 되며, 제2챔버(31)의 브레이크액이 휠실린더로 흘러나감에 따라 제2피스톤(30)이 전진하게 되고 보어 단차부(11)에 형성된 유로(12)간격보다 제2피스톤(30)의 스트로크가 커지는 순간 제1챔버(21)와 제2챔버(31)사이의 유로가 폐쇄되어 기존의 컨벤셔널 브레이크에 적용되는 마스터실린더와 동일하게 작동하게 되고, 브레이크 페달을 밟는 압력에 의한 차량제동이 이루어지는 구조로 되어 있다.In addition, in the abnormal operation mode, since the shutoff valve is NO (Normally Open) state, the brake fluid of the first chamber 21 and the second chamber 31 of the master cylinder flows out to the wheel cylinder as it is by the driver. As the brake fluid of 31 flows into the wheel cylinder, the second piston 30 advances and the moment when the stroke of the second piston 30 becomes larger than the spacing of the flow path 12 formed in the bore step 11 is increased. The flow path between the first chamber 21 and the second chamber 31 is closed to operate in the same manner as the master cylinder applied to conventional conventional brakes, and has a structure in which the vehicle is braked by the pressure of the brake pedal. .

이러한 시뮬레이터는 마스터실린더(10)의 외측에 별도로 구비되어 브레이크 시스템 전체의 부품 수가 늘어나고, 시스템의 사이즈가 커지는 문제점이 있다.Such a simulator is provided on the outside of the master cylinder 10 to increase the number of parts of the entire brake system, and the size of the system increases.

본 발명의 일 측면은 브레이크페달 반력을 내주는 페달시뮬레이터가 부스팅 장치 내부에 일체화 되도록 구조를 개선한 차량용 브레이크를 개시하는 것이다.One aspect of the present invention is to disclose a brake for a vehicle having an improved structure such that a pedal simulator that produces a brake pedal reaction force is integrated inside a boosting device.

본 발명의 사상에 따른 차량용 브레이크는 브레이크페달과 연결된 입력축과; 전기모터와 연결되고 차량에 고정되는 엑츄에이터하우징과; 운전자의 답력을 감지하기 위한 페달작동감지장치와; 브레이크 페달 반력을 내주는 페달시뮬레이터와; 상기 브레이크페달에 의해 제동압을 형성하여 휠브레이크측으로 유압력을 전달하기 위한 마스터실린더와; 상기 전기모터와 연결된 나사부재를 이용하여 상기 마스터 실린더에 배력된 힘을 전달하고, 중앙부에 중공이 형성된 부스팅 장치와; 상기 입력축과 연결되어 브레이크페달의 힘을 전달하는 푸시로드를 포함하되, 상기 페달시뮬레이터는 상기 부스팅 장치의 중공에 수용되어 설치되고, 상기 푸시로드는 상기 페달시뮬레이터를 관통하여 설치되는 것을 특징으로 한다.A vehicle brake according to the spirit of the present invention includes an input shaft connected to a brake pedal; An actuator housing connected to the electric motor and fixed to the vehicle; A pedal operation detecting device for detecting a driver's pedaling force; A pedal simulator for generating a brake pedal reaction force; A master cylinder for forming a braking pressure by the brake pedal and transmitting hydraulic pressure to a wheel brake side; A boosting device which transmits a back force to the master cylinder by using a screw member connected to the electric motor, and has a hollow formed at a central portion thereof; And a push rod connected to the input shaft to transfer the force of the brake pedal, wherein the pedal simulator is accommodated in the hollow of the boosting device, and the push rod is installed through the pedal simulator.

상기 페달작동감지장치는 브레이크페달의 변위를 측정하는 페달트레블센서와, 마스터실린더 피스톤의 변위를 측정하는 페달스트로크센서를 포함한다.The pedal operation detecting device includes a pedal travel sensor for measuring the displacement of the brake pedal, and a pedal stroke sensor for measuring the displacement of the master cylinder piston.

상기 나사부재는 전기모터와 연결된 너트 부재와, 상기 너트부재와 연결된 스핀들 부재를 포함한다.The screw member includes a nut member connected to an electric motor, and a spindle member connected to the nut member.

상기 페달시뮬레이터는 시뮬레이터하우징과, 상기 시뮬레이터하우징내에서 상기 입력축의 진퇴운동과 함께 진퇴가능한 압력부재와, 상기 압력부재의 이동과 연동하여 슬라이딩 가능하도록 상기 시뮬레이터하우징내에 마련된 플런저를 포함한다.The pedal simulator includes a simulator housing, a pressure member retractable with movement of the input shaft in the simulator housing, and a plunger provided in the simulator housing to be slidable in conjunction with movement of the pressure member.

상기 페달시뮬레이터는 상기 압력부재의 동작을 상기 플런저에 전달하도록 상기 플런저와 상기 압력부재 사이에 마련된 제2시뮬레이터스프링과, 상기 플런저와 상기 시뮬레이터하우징의 내벽 사이에 상기 플런저를 탄성 지지하는 제1시뮬레이터스프링을 포함하며, 상기 제1시뮬레이터스프링의 스프링상수는 상기 제2시뮬레이터스프링의 스프링상수에 비하여 상대적으로 보다 작게 형성된다.The pedal simulator includes a second simulator spring provided between the plunger and the pressure member to transfer the operation of the pressure member to the plunger, and a first simulator spring elastically supporting the plunger between the plunger and the inner wall of the simulator housing. It includes, the spring constant of the first simulator spring is formed relatively smaller than the spring constant of the second simulator spring.

이상에서 설명한 본 발명의 일 실시예에 따른 차량용 브레이크는 페달시뮬레이터가 부스팅 장치 내부에 일체화 되도록 함으로써, 시스템 전체의 부품 수 및 크기를 줄일 수 있다.The vehicle brake according to the exemplary embodiment of the present invention described above may reduce the number and size of parts of the entire system by allowing the pedal simulator to be integrated into the boosting device.

또한, 그로 인하여 차량용 브레이크의 제조 단가를 절감할 수 있다.In addition, it is possible to reduce the manufacturing cost of the vehicle brake.

이하에서는 본 발명에 따른 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명의 바람직한 일 실시예에 따른 차량용 브레이크의 단면도이다.2 is a cross-sectional view of a vehicle brake according to an exemplary embodiment of the present invention.

도 2에 도시된 바와 같이, 본 발명의 일 실시예에 따른 차량용 브레이크는 제동시 운전자에 의해 조작되는 브레이크페달(300)과 연결된 입력축(310)과, 전기모터(410)와 연결되고 차량에 고정되는 엑츄에이터하우징(200)과, 운전자의 답력을 감지하기 위하여 페달트레블센서(510) 및 페달스트로크센서(530)를 구비한 페달작동감지장치(500)와, 브레이크 페달(300) 반력을 내주는 페달시뮬레이터(250)와, 브 레이크페달(300)에 의해 제동압을 형성하여 휠브레이크(800a,800b)측으로 유압력을 전달하기 위한 마스터실린더(100)와, 마스터실린더(100)의 상부에 마련되어 오일을 저장하고 있는 리저버(120)와, 상기 전기모터(410)와 연결된 나사부재(425)를 이용하여 상기 마스터 실린더(100)에 배력된 힘을 전달하고 중앙부에 중공(408)이 형성된 부스팅 장치(405)와, 마스터실린더(100)와 휠브레이크(800a,800b) 사이에 마련되어 내부에 각종 유로가 형성되고 다수의 밸브, 펌프, 어큐뮬레이터등이 포함되어 있는 ABS(Anti-Lock Brake System) 유압 모듈(700)을 포함한다.As shown in FIG. 2, a vehicle brake according to an embodiment of the present invention is connected to an input shaft 310 connected to a brake pedal 300 operated by a driver when braking, an electric motor 410, and fixed to a vehicle. A pedal actuating device 500 having an actuator housing 200, a pedal travel sensor 510, and a pedal stroke sensor 530 to detect a driver's stepping force, and a pedal that exerts a reaction force on the brake pedal 300. It is provided on the master cylinder 100 and the upper part of the master cylinder 100 to form a braking pressure by the simulator 250 and the brake pedal 300 to transfer hydraulic pressure to the wheel brakes 800a and 800b. Booster device for transmitting the force back to the master cylinder 100 by using the reservoir 120 and the screw member 425 connected to the electric motor 410 and the hollow 408 is formed in the center ( 405), the master cylinder (100) And an anti-lock brake system (ABS) hydraulic module 700 provided between the wheel brakes 800a and 800b and having various flow paths formed therein and including a plurality of valves, pumps, and accumulators.

브레이크페달(300)과 연결된 입력축(310)은 시뮬레이터하우징(251)내에서 축방향으로 이동 가능하게 마련된 압력부재(260)에 수용된다. 또한, 브레이크페달(300)에는 운전자의 제동의지를 감지하기 위한 페달트레블센서(510)가 설치된다.The input shaft 310 connected to the brake pedal 300 is accommodated in the pressure member 260 provided to be movable in the axial direction in the simulator housing 251. In addition, the brake pedal 300 is provided with a pedal travel sensor 510 for detecting the driver's braking will.

압력부재(260)의 일측에는 입력축(310)이 수용되는 수용홈(261)이 마련되고, 타측에는 후술할 푸쉬로드(400)의 후단부가 삽입고정되는 고정홈(263)이 형성되어 시뮬레이터하우징(251) 내부로 연장된다. 또한, 압력부재(260)의 외주연에는 반경방향으로 돌출된 돌출부(265)가 형성된다.On one side of the pressure member 260 is provided with a receiving groove 261 for receiving the input shaft 310, the other side is formed with a fixed groove 263 is inserted into the rear end of the push rod 400 to be described later simulator housing ( 251) extending inside. In addition, the outer periphery of the pressure member 260 is formed with a protrusion 265 protruding in the radial direction.

시뮬레이터하우징(251) 내부에는 압력부재(260)의 이동에 따라 연동되어 축 방향으로 슬라이딩 가능한 플런저(253)가 마련된다. 또한, 플런저(253)와 압력부재(260)사이에는 압력부재(260)의 동작을 플런저(253)에 전달하는 제2시뮬레이터스프링(257)이 마련되고, 플런저(253)과 시뮬레이터하우징(251)의 내벽 사이에는 플런저(253)을 탄성 지지하는 제1시뮬레이터스프링(255)이 마련된다. The plunger 253 slidable in the axial direction is provided in the simulator housing 251 in association with the movement of the pressure member 260. In addition, a second simulator spring 257 is provided between the plunger 253 and the pressure member 260 to transfer the operation of the pressure member 260 to the plunger 253, and the plunger 253 and the simulator housing 251. Between the inner walls of the first plunger 253 is provided with a first simulator spring 255 to elastically support.

한편, 제1시뮬레이터스프링(255)은 제2시뮬레이터스프링(257)에 비하여 스 프링상수가 작은 것으로 마련된다. 이는 브레이크페달(300)과 연결된 입력축(310)에 의하여 압력부재(260)가 전진하면 플런저(253)을 탄성지지하는 제1시뮬레이터스프링(255)이 시뮬레이터하우징(251)의 내벽 방향으로 압축되면서 입력축(310)의 전진방향과 반대방향으로 1차반발력을 가지게 되며, 제1시뮬레이터스프링(255)이 최대한 압축되었을때 압력부재(260)가 제2시뮬레이터스프링(257)을 밀어 제2시뮬레이터스프링(257)이 압축되면서 2차반발력을 가지게 되어 전체적인 페달감이 2번의 선형적인 반발력에 의하여 적절한 페달감을 형성하기 위한 것이다.On the other hand, the first simulator spring 255 is provided with a smaller spring constant than the second simulator spring (257). This is because when the pressure member 260 is advanced by the input shaft 310 connected to the brake pedal 300, the first simulator spring 255 elastically supporting the plunger 253 is compressed in the direction of the inner wall of the simulator housing 251. It has a first repulsive force in the direction opposite to the forward direction of 310, and when the first simulator spring 255 is compressed as much as possible, the pressure member 260 pushes the second simulator spring 257, the second simulator spring (257) ) Is compressed to have a secondary repulsive force so that the overall pedal feeling is to form a proper pedal feeling by two linear repulsive forces.

마스터실린더(100)는 운전자가 밟은 페달의 압력을 마스터실린더로 전달하는 마스터실린더 피스톤(110)과, 마스터실린더 피스톤(110)의 전진동작에 의해 전진되는 제2피스톤(130)과, 마스터실린더 피스톤(110)과 제2피스톤(130) 사이에서 오일을 압축할 수 있도록 마련된 제1챔버(140)와, 마스터실린더 피스톤(110)과 제2피스톤(130) 사이에 설치되어 마스터실린더 피스톤(110)의 동작을 제2피스톤(130)에 전달하는 제1스프링(170)과, 제2피스톤(130)과 마스터실린더의 내벽 사이에서 오일을 압축할 수 있도록 마련하는 제2챔버(141)와, 제2피스톤(130)과 마스터실린더 내벽 사이에 설치되어 제2피스톤(130)을 탄성지지하는 제2스프링(171)을 구비한다. 또한, 마스터실린더(100)내의 액압을 휠브레이크(800a,800b)측으로 전달하기 위하여 마스터실린더(100)의 하부에는 제1,2포트(150, 151)가 구비된다. 그리고, 마스터실린더(100)의 내경은 플런저(253)의 직경보다 크게 형성된다.The master cylinder 100 includes a master cylinder piston 110 which transmits the pressure of the pedal pressed by the driver to the master cylinder, a second piston 130 which is advanced by the forward operation of the master cylinder piston 110, and the master cylinder piston. The master cylinder piston 110 is installed between the first chamber 140 and the master cylinder piston 110 and the second piston 130 provided to compress the oil between the 110 and the second piston 130. The first spring 170 for transmitting the operation of the second piston 130, the second chamber 141 for compressing the oil between the second piston 130 and the inner wall of the master cylinder, A second spring 171 is installed between the second piston 130 and the inner wall of the master cylinder to elastically support the second piston 130. In addition, first and second ports 150 and 151 are provided under the master cylinder 100 to transfer the hydraulic pressure in the master cylinder 100 to the wheel brakes 800a and 800b. The inner diameter of the master cylinder 100 is larger than the diameter of the plunger 253.

그리고, 마스터실린더 피스톤(110)과 일정간격 이격되고, 입력축(310)을 향하여 시뮬레이터하우징(251)과 플런저(253)를 관통하여 압력부재(260)에 형성된 고 정홈(263)에 삽입 고정되는 푸쉬로드(400)가 마련된다. Then, the push is spaced apart from the master cylinder piston 110 by a predetermined interval, and is inserted into the fixing groove 263 formed in the pressure member 260 through the simulator housing 251 and the plunger 253 toward the input shaft 310. The rod 400 is provided.

푸쉬로드(400)는 마스터실린더 피스톤(110)과 여유공간(S)만큼 이격되어 있다. 이는 운전자가 급격하게 브레이크 페달(300)을 밟는 경우 푸쉬로드(400)가 바로 마스터 실린더 피스톤(100)에 접촉되어 느껴지는 이질적인 페달감 발생을 방지하기 위한 것이다.The push rod 400 is spaced apart from the master cylinder piston 110 by the free space (S). This is to prevent the occurrence of heterogeneous pedal feeling that the push rod 400 is directly in contact with the master cylinder piston 100 when the driver suddenly presses the brake pedal 300.

부스팅 장치(405)는 나사부재(425)와 연결되어 동력을 전달하는 전기모터(410)와, 상기 전기모터(410)의 회전력을 직선방향으로 전달하도록 너트부재(420) 및 스핀들부재(430)로 구성된 나사부재(425)를 포함하여 구성된다. 부스팅 장치(405)의 중앙부에 형성된 중공(408)에는 페달시뮬레이터(250)가 수용되어 설치된다. 이렇게 페달시뮬레이터(250)가 엑츄에이터하우징(200) 내부와 부스팅 장치(405)에 걸쳐 설치되므로, 장착성이 향상되고 제조단가가 절감된다.The boosting device 405 is connected to the screw member 425 to transmit the electric motor 410 and the nut member 420 and the spindle member 430 to transmit the rotational force of the electric motor 410 in a linear direction. It is configured to include a screw member 425 composed of. The pedal simulator 250 is accommodated and installed in the hollow 408 formed at the center of the boosting device 405. Since the pedal simulator 250 is installed over the inside of the actuator housing 200 and the boosting device 405, the mountability is improved and the manufacturing cost is reduced.

전기모터(410)는 전자제어유닛(ECU : Electronic Control Unit)에 의하여 제어된다. 즉, 페달스트로크센서(530) 및 페달트레블센서(510)에 의한 페달 작동 감지 및 작동된 신호를 통하여 페달 스트로크 또는 페달 답력에 따른 운전자의 제동의지에 해당하는 압력을 ECU에 의하여 전기모터(410)를 제어하여 조절하게 된다. The electric motor 410 is controlled by an electronic control unit (ECU). That is, through the pedal stroke sensor 530 and the pedal travel sensor 510 detects the pedal operation and the activated signal, the pressure corresponding to the driver's braking intention according to the pedal stroke or the pedal effort is controlled by the ECU by the ECU. To control.

전기모터(410)는 BLDC모터이고, 스테이터와 회전하는 로터로 구성된다. 로터는 너트부재(420)와 벨트에 의해 연결되고, 너트부재(420)는 스핀들부재(430)와 맞물려 있다. 그리고, 스핀들부재(430)는 마스터실린더 피스톤(110)과 일체로 형성되어 있다. 즉, 전기모터(410)의 로터가 회전하면, 이와 연결된 너트부재(420)가 회전하게 되고, 동시에 너트부재(420)와 맞물린 스핀들 부재(430)가 회전하면서 마 스터실린더 피스톤(110)이 전진하여 마스터실린더(100)를 가압한다.The electric motor 410 is a BLDC motor, and is composed of a stator and a rotating rotor. The rotor is connected by the nut member 420 and the belt, and the nut member 420 is engaged with the spindle member 430. The spindle member 430 is integrally formed with the master cylinder piston 110. That is, when the rotor of the electric motor 410 rotates, the nut member 420 connected thereto rotates, and at the same time, the master cylinder piston 110 moves forward while the spindle member 430 engaged with the nut member 420 rotates. To pressurize the master cylinder (100).

도 3은 ABS 유압 모듈을 나타낸 개략도로서 휠브레이크(800a, 800b)로 전달되는 제동유압을 제어하기 위한 다수개의 솔레노이드밸브(710a, 710b, 730a, 730b)와, ABS 감압모드시 휠브레이크(800a, 800b)에서 빠져나온 오일을 일시 저장하는 저압어큐뮬레이터(750a, 750b)와, 이 저압어큐뮬레이터(750a, 750b)에 저장된 오일을 흡입하여 토출하는 펌프(770)와, 마스터실린더(100)의 제1,2포트(150, 151)측과 각 펌프(770)의 인렛측을 연결하는 오일흡입유로(790a, 790b)를 구비한다. 다수개의 솔레노이드밸브는 각 휠브레이크(800a, 800b)의 상류측에 배치되는 NO형 솔레노이드밸브(710a, 730a)와 하류측에 배치되는 NC형 솔레노이드밸브(710b, 730b)로 구별되며, 전자제어유닛(미도시)에 의하여 차속에 따라 각 솔레노이드밸브(710a, 710b, 730a, 730b)의 개폐작동을 제어하게 된다.3 is a schematic view showing an ABS hydraulic module, a plurality of solenoid valves (710a, 710b, 730a, 730b) for controlling the braking hydraulic pressure delivered to the wheel brakes (800a, 800b), and the wheel brakes (800a, Low pressure accumulators 750a and 750b for temporarily storing the oil discharged from 800b); a pump 770 for sucking and discharging oil stored in the low pressure accumulators 750a and 750b; Oil suction passages 790a and 790b connecting the two ports 150 and 151 and the inlet side of each pump 770 are provided. The plurality of solenoid valves are divided into NO type solenoid valves 710a and 730a disposed upstream of each wheel brake 800a and 800b and NC type solenoid valves 710b and 730b disposed downstream. (Not shown) controls the opening and closing operation of each solenoid valve 710a, 710b, 730a, 730b according to the vehicle speed.

다음으로는 본 발명의 일 실시예에 따른 차량용 브레이크의 동작에 대해 설명하기로 한다.Next, the operation of the vehicle brake according to an embodiment of the present invention will be described.

도 2를 참조하면, 운전자가 브레이크페달(300)을 가압하는 경우 브레이크페달(300)과 연결된 입력축(310)은 축방향으로 좌측으로 전진하게 되며 그와 동시에 압력부재(260)가 시뮬레이터하우징(251)내에서 좌측으로 전진하게 된다. 압력부재(260)의 이동은 페달스트로크센서(530)에 의하여 검출되고, 검출된 신호는 ECU로 보내지게 된다. ECU는 이에 따라서 전기모터(410)를 구동시킨다. 전기모터(410)의 로터가 회전하면, 이와 연결된 너트부재(420)가 회전하게 되고, 동시에 너트부재(420)와 맞물린 스핀들 부재(430)가 회전하면서 마스터실린더 피스톤(110)이 전 진한다. 이에 따라 마스터 실린더 피스톤(110)이 제2피스톤(130)을 좌측으로 밀게되어 제1, 2챔버(140, 141)에 의해 오일을 압축한 후 제1,2포트(150,151)에 의하여 ABS유압모듈로 오일이 유입되어 휠브레이크(800a, 800b)측으로 전달된다.Referring to FIG. 2, when the driver presses the brake pedal 300, the input shaft 310 connected to the brake pedal 300 is advanced leftward in the axial direction, and at the same time, the pressure member 260 is moved to the simulator housing 251. To the left. Movement of the pressure member 260 is detected by the pedal stroke sensor 530, and the detected signal is sent to the ECU. The ECU accordingly drives the electric motor 410. When the rotor of the electric motor 410 rotates, the nut member 420 connected thereto rotates, and at the same time, the spindle cylinder 430 engaged with the nut member 420 rotates, and the master cylinder piston 110 moves forward. Accordingly, the master cylinder piston 110 pushes the second piston 130 to the left to compress the oil by the first and second chambers 140 and 141, and then the ABS hydraulic module by the first and second ports 150 and 151. The oil flows into the wheel brakes 800a and 800b.

한편, 입력축(310)이 좌측으로 전진함에 따라서 푸쉬로드(400)가 마스터실린더 피스톤(110) 사이에 마련된 여유공간(S)으로 전진하는 동안 브레이크페달(300)과 연결된 입력축(310)에 의하여 압력부재(260)가 전진하면 플런저(253)를 탄성지지하는 제2시뮬레이터스프링(257)이 플런저(253)의 방향으로 압축되면서 입력축(310)의 전진방향과 반대방향으로 1차반발력을 가지게 되며, 제2시뮬레이터스프링(257)이 최대한 압축되었을때 플런저(253)가 제1시뮬레이터스프링(255)을 밀어 제2시뮬레이터스프링(257)이 압력부재(260)의 전진방향으로 압축되면서 2차반발력을 가지게 되어 전체적인 페달감이 2번의 선형적인 반발력에 의하여 적절한 페달감을 형성하게 된다. 따라서, 운전자에게 페달감을 부여하게 되는 것이다.On the other hand, as the input shaft 310 advances to the left side, the pressure is pushed by the input shaft 310 connected to the brake pedal 300 while the push rod 400 advances to the clearance space S provided between the master cylinder pistons 110. When the member 260 moves forward, the second simulator spring 257 elastically supporting the plunger 253 is compressed in the direction of the plunger 253 and has a primary repulsive force in a direction opposite to the advance direction of the input shaft 310. When the second simulator spring 257 is compressed as much as possible, the plunger 253 pushes the first simulator spring 255 so that the second simulator spring 257 is compressed in the forward direction of the pressure member 260 to have a secondary repulsive force. As a result, the overall pedaling feeling is appropriately formed by two linear repulsive forces. Therefore, a pedal feeling is given to a driver.

이상에서는 본 발명을 특정의 바람직한 실시예에 대하여 도시하고 설명하였다. 그러나, 본 발명은 상기한 실시예에만 한정되지 않으며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 이하의 청구범위에 기재된 본 발명의 기술적 사상의 요지를 벗어남이 없이 얼마든지 다양하게 변경실시할 수 있을 것이다.In the above, the present invention has been illustrated and described with respect to certain preferred embodiments. However, the present invention is not limited only to the above-described embodiments, and those skilled in the art to which the present invention pertains can variously change without departing from the gist of the technical idea of the present invention described in the claims below. Could be done.

도 1은 종래의 페달시뮬레이터를 구비한 마스터실린더를 도시한 단면도이다.1 is a cross-sectional view showing a master cylinder having a conventional pedal simulator.

도 2는 본 발명의 바람직한 일 실시예에 따른 차량용 브레이크의 단면도이다.2 is a cross-sectional view of a vehicle brake according to an exemplary embodiment of the present invention.

도 3은 ABS 유압 모듈을 나타낸 개략도이다.3 is a schematic view showing an ABS hydraulic module.

*도면의 주요부분에 대한 부호 설명*Description of the Related Art [0002]

100: 마스터실린더 120: 리저버100: master cylinder 120: reservoir

250: 페달시뮬레이터 251: 시뮬레이터하우징250: pedal simulator 251: simulator housing

260: 압력부재 253: 시뮬레이터피스톤260: pressure member 253: simulator piston

255: 제1시뮬레이터스프링 257: 제2시뮬레이터스프링255: first simulator spring 257: second simulator spring

300: 브레이크페달 310: 입력축300: brake pedal 310: input shaft

400: 푸쉬로드 500: 페달작동감지장치400: push rod 500: pedal operation detection device

Claims (5)

브레이크페달과 연결된 입력축과; 전기모터와 연결되고 차량에 고정되는 엑츄에이터하우징과; 운전자의 답력을 감지하기 위한 페달작동감지장치와; 브레이크 페달 반력을 내주는 페달시뮬레이터와; 상기 브레이크페달에 의해 제동압을 형성하여 휠브레이크측으로 유압력을 전달하기 위한 마스터실린더와; 상기 전기모터와 연결된 나사부재를 이용하여 상기 마스터 실린더에 배력된 힘을 전달하고, 중앙부에 중공이 형성된 부스팅 장치와; 상기 입력축과 연결되어 브레이크페달의 힘을 전달하는 푸시로드를 포함하되,An input shaft connected to the brake pedal; An actuator housing connected to the electric motor and fixed to the vehicle; A pedal operation detecting device for detecting a driver's pedaling force; A pedal simulator for generating a brake pedal reaction force; A master cylinder for forming a braking pressure by the brake pedal and transmitting hydraulic pressure to a wheel brake side; A boosting device which transmits a back force to the master cylinder by using a screw member connected to the electric motor, and has a hollow formed at a central portion thereof; Including a push rod connected to the input shaft to transfer the force of the brake pedal, 상기 페달시뮬레이터는 상기 부스팅 장치의 중공에 수용되어 설치되고, 상기 푸시로드는 상기 페달시뮬레이터를 관통하여 설치되는 것을 특징으로 하는 차량용 브레이크.The pedal simulator is received and installed in the hollow of the boosting device, the push rod is a vehicle brake, characterized in that installed through the pedal simulator. 제1항에 있어서,The method of claim 1, 상기 페달작동감지장치는 브레이크페달의 변위를 측정하는 페달트레블센서와, 마스터실린더 피스톤의 변위를 측정하는 페달스트로크센서를 포함하는 것을 특징으로 하는 차량용 브레이크.The pedal operation detecting device includes a pedal travel sensor for measuring displacement of the brake pedal, and a pedal stroke sensor for measuring displacement of the master cylinder piston. 제1항에 있어서,The method of claim 1, 상기 나사부재는 전기모터와 연결된 너트 부재와, 상기 너트부재와 연결된 스핀들 부재를 포함하는 것을 특징으로 하는 차량용 브레이크.The screw member includes a nut member connected to an electric motor and a spindle member connected to the nut member. 제1항에 있어서,The method of claim 1, 상기 페달시뮬레이터는 시뮬레이터하우징과, 상기 시뮬레이터하우징내에서 상기 입력축의 진퇴운동과 함께 진퇴가능한 압력부재와, 상기 압력부재의 이동과 연동하여 슬라이딩 가능하도록 상기 시뮬레이터하우징내에 마련된 플런저를 포함하는 것을 특징으로 하는 차량용 브레이크.The pedal simulator includes a simulator housing, a pressure member retractable with movement of the input shaft in the simulator housing, and a plunger provided in the simulator housing to be able to slide in conjunction with movement of the pressure member. Car brakes. 제4항에 있어서,The method of claim 4, wherein 상기 페달시뮬레이터는 상기 압력부재의 동작을 상기 플런저에 전달하도록 상기 플런저와 상기 압력부재 사이에 마련된 제2시뮬레이터스프링과, 상기 플런저와 상기 시뮬레이터하우징의 내벽 사이에 상기 플런저를 탄성 지지하는 제1시뮬레이터스프링을 포함하며, 상기 제1시뮬레이터스프링의 스프링상수는 상기 제2시뮬레이터스프링의 스프링상수에 비하여 상대적으로 보다 작게 형성되는 것을 특징으로 하는 차량용 브레이크.The pedal simulator includes a second simulator spring provided between the plunger and the pressure member to transfer the operation of the pressure member to the plunger, and a first simulator spring elastically supporting the plunger between the plunger and the inner wall of the simulator housing. And a spring constant of the first simulator spring is relatively smaller than a spring constant of the second simulator spring.
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KR20120045599A (en) * 2010-10-29 2012-05-09 현대모비스 주식회사 Multi function breaking pressure generating device
CN103158686A (en) * 2011-12-12 2013-06-19 现代摩比斯株式会社 Pedal simulator of electro-mechanical brake in vehicle
KR101315776B1 (en) * 2012-01-27 2013-10-14 주식회사 만도 Motor booster of vehicle brake system
KR101315781B1 (en) * 2012-01-25 2013-10-14 주식회사 만도 Motor booster of vehicle brake system
CN103847720A (en) * 2012-11-28 2014-06-11 现代摩比斯株式会社 Load supporting structure of electric booster type brake apparatus
WO2017047969A1 (en) * 2015-09-18 2017-03-23 엘지이노텍 주식회사 Motor and brake device including same
KR20190037899A (en) 2017-09-29 2019-04-08 주식회사 만도 Mounting device for master cylinder
CN109878475A (en) * 2019-03-31 2019-06-14 浙江力邦合信智能制动系统股份有限公司 A kind of brake booster
CN112109688A (en) * 2020-08-17 2020-12-22 吉林大学 Servo braking system with parking self-locking function
WO2021172915A1 (en) * 2020-02-25 2021-09-02 주식회사 만도 Brake pedal movement device

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KR20120045599A (en) * 2010-10-29 2012-05-09 현대모비스 주식회사 Multi function breaking pressure generating device
CN103158686A (en) * 2011-12-12 2013-06-19 现代摩比斯株式会社 Pedal simulator of electro-mechanical brake in vehicle
KR101315781B1 (en) * 2012-01-25 2013-10-14 주식회사 만도 Motor booster of vehicle brake system
KR101315776B1 (en) * 2012-01-27 2013-10-14 주식회사 만도 Motor booster of vehicle brake system
CN103847720A (en) * 2012-11-28 2014-06-11 现代摩比斯株式会社 Load supporting structure of electric booster type brake apparatus
US9109463B2 (en) 2012-11-28 2015-08-18 Hyundai Mobis Co., Ltd. Load supporting structure of electric booster type brake apparatus
WO2017047969A1 (en) * 2015-09-18 2017-03-23 엘지이노텍 주식회사 Motor and brake device including same
US10432057B2 (en) 2015-09-18 2019-10-01 Lg Innotek Co., Ltd. Motor and brake device including same
KR20190037899A (en) 2017-09-29 2019-04-08 주식회사 만도 Mounting device for master cylinder
CN109878475A (en) * 2019-03-31 2019-06-14 浙江力邦合信智能制动系统股份有限公司 A kind of brake booster
WO2021172915A1 (en) * 2020-02-25 2021-09-02 주식회사 만도 Brake pedal movement device
CN112109688A (en) * 2020-08-17 2020-12-22 吉林大学 Servo braking system with parking self-locking function

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