KR19990019116U - Brake booster structure for improved response - Google Patents

Brake booster structure for improved response Download PDF

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Publication number
KR19990019116U
KR19990019116U KR2019970032450U KR19970032450U KR19990019116U KR 19990019116 U KR19990019116 U KR 19990019116U KR 2019970032450 U KR2019970032450 U KR 2019970032450U KR 19970032450 U KR19970032450 U KR 19970032450U KR 19990019116 U KR19990019116 U KR 19990019116U
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KR
South Korea
Prior art keywords
chamber
brake booster
braking
output valve
brake
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Application number
KR2019970032450U
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Korean (ko)
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KR200202981Y1 (en
Inventor
문성원
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정몽규
현대자동차 주식회사
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Priority to KR2019970032450U priority Critical patent/KR200202981Y1/en
Publication of KR19990019116U publication Critical patent/KR19990019116U/en
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Publication of KR200202981Y1 publication Critical patent/KR200202981Y1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T13/00Transmitting 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
    • B60T13/10Transmitting 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
    • B60T13/24Transmitting 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 gaseous
    • B60T13/46Vacuum systems
    • B60T13/52Vacuum systems indirect, i.e. vacuum booster units
    • B60T13/563Vacuum systems indirect, i.e. vacuum booster units with multiple booster units, e.g. tandem booster units
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T13/00Transmitting 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
    • B60T13/10Transmitting 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
    • B60T13/24Transmitting 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 gaseous
    • B60T13/46Vacuum systems
    • B60T13/52Vacuum systems indirect, i.e. vacuum booster units
    • B60T13/57Vacuum systems indirect, i.e. vacuum booster units characterised by constructional features of control valves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T7/00Brake-action initiating means
    • B60T7/02Brake-action initiating means for personal initiation
    • B60T7/04Brake-action initiating means for personal initiation foot actuated
    • B60T7/042Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60YINDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2304/00Optimising design; Manufacturing; Testing
    • B60Y2304/07Facilitating assembling or mounting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60YINDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00Special features of vehicle units
    • B60Y2400/30Sensors
    • B60Y2400/303Speed sensors

Abstract

본 고안은 응답성향상을 위한 브레이크 부스터구조에 관한 것으로, 브레이크 부스터의 작동시 프론트 체임버와 리어 체임버의 내부로 각기 유입되는 공기의 유입속도를 제동시 브레이크 페달을 밟는 가압속도에 맞춰 동일하게 해 줌으로써, 정상제동시나 급제동시 브레이크가 동일한 성능을 발휘할 수 있도록 함에 그 목적이 있다.The present invention relates to a brake booster structure for improving the responsiveness, by making the inflow rate of the air flowing into the inside of the front chamber and the rear chamber during the operation of the brake booster equal to the pressurizing speed of the brake pedal when braking. Therefore, the purpose is to enable the brake to perform the same performance during normal braking or sudden braking.

전술한 바의 목적을 달성하기 위한 본 고안은, 프론트쉘(1)과 리어쉘(2) 및 부트(3)가 형성하는 폐공간내에 위치한 밸브바디(4)와, 이 밸브바디(4)내에 설치된 인풋로드(6)와 컨트롤플런져(7)와 리액션디스크(8) 및 아웃풋로드(9), 상기 밸브바디(4)에 내부공간을 구획짓도록 배치된 센터플레이트(10), 이 센터플레이트(10)와 제2다이아프램(11)이 형성하는 프론트 체임버(12), 상기 리어쉘(2)과 제1다이아프램(13)이 형성하는 리어 체임버(14)로 구성되는 탠덤식 브레이크 부스터에 있어서, 상기 프론트쉘(1)에 제동시 브레이크페달이 가압되는 속도를 측정하도록 장착된 트래블센서(15)와, 상기 프론트 체임버(12)와 리어 체임버(14)로 공기를 유입시키도록 각기 독립적으로 장착된 제1출력밸브(16)와 제2출력밸브(17), 상기 트래블센서(15)와 제1출력밸브(16) 및 제2출력밸브(17)에 각기 연결된 제어유니트(18)가 부가된 것을 특징으로 한다.The present invention for achieving the above object is a valve body (4) located in the closed space formed by the front shell (1), the rear shell (2) and the boot (3), and in the valve body (4) An installed input rod (6), a control plunger (7), a reaction disc (8) and an output rod (9), and a center plate (10) arranged to partition an internal space in the valve body (4), the center plate Tandem brake booster composed of a front chamber 12 formed by the 10 and the second diaphragm 11 and a rear chamber 14 formed by the rear shell 2 and the first diaphragm 13. In this case, the travel sensor 15 mounted to measure the speed at which the brake pedal is pressurized when braking in the front shell 1, and independently to introduce air into the front chamber 12 and the rear chamber 14, respectively. The first output valve 16 and the second output valve 17, the travel sensor 15 and the first output valve 16 and the second output valve (1) mounted It is characterized in that the control unit 18 connected to each of 7) is added.

Description

응답성향상을 위한 브레이크 부스터구조Brake booster structure for improved response

본 고안은 차량의 탠덤식 브레이크 부스터에 관한 것으로, 특히 제동시 운전자가 브레이크 페달을 밟는 가압속도를 검출하여 프론트 체임버와 리어 체임버내에 동일한 속도의 공기를 유입시켜 정상제동시나 급제동시 브레이크가 동일한 성능을 발휘할 수 있도록 된 응답성향상을 위한 브레이크 부스터구조에 관한 것이다.The present invention relates to a tandem brake booster of a vehicle, and in particular, detects the pressurized speed at which the driver presses the brake pedal during braking and introduces the same speed air into the front chamber and the rear chamber so that the brake performs the same performance during normal braking or sudden braking. The present invention relates to a brake booster structure for improved response performance.

일반적으로 차량은 대형화 및 고속화됨에 따라 브레이크 페달의 적은 답력으로도 차량을 확실하게 제동시킬 수 있도록 하기 위해 제동배력장치(브레이크 부스터)가 사용되고 있는 바, 이와 같은 제동배력장치가 제동력을 증대시키는 원리는 마스터 실린더와 별도로 파워 피스톤을 설치하고, 여기에 진공과 대기압과의 차압을 가하거나하여 힘을 증대시켜 큰 압력을 발생시키고 있다.In general, as a vehicle becomes larger and faster, a brake booster (brake booster) is used to reliably brake the vehicle even with a small pedaling force of the brake pedal. A power piston is provided separately from the master cylinder, and a large pressure is generated by increasing the force by applying a differential pressure between vacuum and atmospheric pressure thereto.

상기와 같은 제동배력장치는 진공과 대기압과의 차압을 이용하는 진공식 제동배력장치와, 압축공기압력을 이용하는 압축공기식 제동배력장치가 있는 바, 상기 진공식 제동배력장치는 엔진의 흡기매니폴드나 혹은 진공펌프에서 발생하는 부압과 대기압과의 차압을 배력장치내에 설치한 파워피스톤에 작용시켜 큰 힘을 브레이크에 가해주게 되어 있다.The braking booster includes a vacuum brake booster using a differential pressure between vacuum and atmospheric pressure, and a compressed air brake booster using compressed air pressure. The vacuum brake booster includes an intake manifold or an engine intake manifold. Alternatively, the differential pressure between the negative pressure and the atmospheric pressure generated by the vacuum pump is applied to the power piston installed in the power system to apply a large force to the brake.

상기와 같은 종래의 진공식 제동배력장치중 하나인 탠덤식 브레이크 부스터가 도 1에 도시되어 있는 바, 이 탠덤식 브레이크 부스터는 강판제의 프론트쉘(1)과 리어쉘(2) 및 부트(3)가 형성하는 폐공간내에 밸브바디(4)가 위치하고, 이 밸브바디(4) 내에 브레이크 페달과 크레비스(5)를 매개로 연결된 인풋로드(6)와 컨트롤플런져(7) 및 리액션디스크(8) 그리고 아웃풋로드(9)가 위치되며, 또한 상기 밸브바디(4)에 센터플레이트(10)가 내부공간을 구획짓도록 배치되고, 이 센터플레이트(10)와 제2다이아프램(11)이 프론트 체임버(12)를 형성하며, 상기 리어쉘(2)과 제1다이아프램(13)이 리어 체임버(14)를 형성하도록 되어 있다.A tandem brake booster, which is one of the conventional vacuum braking boosters, is shown in FIG. 1. The tandem brake booster includes a front shell (1), a rear shell (2) and a boot (3) made of steel. The valve body 4 is located in the closed space formed by the input body 6, and the input rod 6, the control plunger 7 and the reaction disk 8 connected via the brake pedal and the crevis 5 are connected to the valve body 4. And the output rod 9 is located, and the center plate 10 is arranged in the valve body 4 so as to partition the inner space, and the center plate 10 and the second diaphragm 11 are front. The chamber 12 is formed, and the rear shell 2 and the first diaphragm 13 form the rear chamber 14.

따라서 상기 탠덤식 브레이크 부스터는 브레이크 페달의 조작에 의해, 이 브레이크 페달의 답력이 상기 크레비스(5)에 그대로 전달되어 인풋로드(6)가 우선적으로 밀려지게 되는데, 이로 인해 부트(3)를 통해 외부의 공기가 유입되어 각기 프론트 체임버(12)와 리어 체임버(14)내로 유입되게 된다.Accordingly, the tandem brake booster is operated by the brake pedal so that the pedal force of the brake pedal is transmitted as it is to the crevis 5 so that the input rod 6 is pushed preferentially. Air is introduced into the front chamber 12 and the rear chamber 14, respectively.

이때 상기 프론트 체임버(12)로 유입되는 공기의 속도는 리어 체임버(14)로 유입되는 속도보다 떨어지므로, 제동시 배력성능이 저하되는데, 이와 같은 공기의 유입속도의 차이는 급제동시에 더욱 더 현격하게 발생되어 도 2의 그래프에 도시된 바와 같이 입력 대비 출력을 볼 때 정상제동시때 보다 급제동시의 출력이 급격하게 저하되는 단점이 있었다.At this time, since the speed of the air flowing into the front chamber 12 is lower than the speed flowing into the rear chamber 14, the backing force performance is reduced during braking. As shown in the graph of FIG. 2, when the output is compared with the input, there is a disadvantage in that the output during sudden braking is sharply lowered than during normal braking.

이에 본 고안은 상기한 단점을 해소하기 위해 안출된 것으로, 브레이크 부스터의 작동시 프론트 체임버와 리어 체임버의 내부로 각기 유입되는 공기의 유입속도를 제동시 브레이크 페달을 밟는 가압속도에 맞춰 동일하게 해 줌으로써, 정상제동시나 급제동시 브레이크가 동일한 성능을 발휘할 수 있도록 된 응답성향상을 위한 브레이크 부스터구조를 제공함에 그 목적이 있다.Therefore, the present invention was devised to solve the above-mentioned disadvantages, by making the inflow rate of the air introduced into the inside of the front chamber and the rear chamber during the operation of the brake booster equal to the pressurizing speed of the brake pedal when braking. Therefore, the object of the present invention is to provide a brake booster structure for improving the responsiveness so that the brake can exhibit the same performance during normal braking or sudden braking.

도 1은 종래 브레이크 부스터의 단면도,1 is a cross-sectional view of a conventional brake booster,

도 2는 종래 정상제동시와 급제동시의 입력 대비 출력을 나타낸 그래프,Figure 2 is a graph showing the output compared to the input during normal braking and braking,

도 3은 본 고안에 따른 브레이크 부스터의 구성도,3 is a block diagram of a brake booster according to the present invention,

도 4는 본 고안에 따른 브레이크 부스터에서 정상제동시와 급제동시의Figure 4 of the normal braking and sudden braking in the brake booster according to the present invention

입력 대비 출력을 나타낸 그래프이다.This graph shows the output versus the input.

< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>

1-프론트쉘 2-리어쉘1-front shell 2-rear shell

3-부트 4-밸브바디3-boot 4-valve body

5-크레비스 6-인풋로드5-crevis 6-input rod

7-컨트롤플런져 8-리액션디스크7-Control Plunger 8-Reaction Disc

9-아웃풋로드 10-센터플레이트9-output rod 10-center plate

11-제2다이아프램 12-프론트 체임버11-second diaphragm 12-front chamber

13-제1다이아프램 14-리어 체임버13-first diaphragm 14-rear chamber

15-트래블센서 16-제1출력밸브15-travel sensor 16-first output valve

17-제2출력밸브 18-제어유니트17-second output valve 18-control unit

상기한 바의 목적을 달성하기 위한 본 고안은, 프론트쉘과 리어쉘 및 부트가 형성하는 폐공간내에 위치한 밸브바디와, 이 밸브바디에 내부공간을 구획짓도록 배치된 센터플레이트, 이 센터플레이트와 제2다이아프램이 형성하는 프론트 체임버, 상기 리어쉘과 제1다이아프램이 형성하는 리어 체임버로 구성되는 탠덤식 브레이크 부스터에 있어서, 상기 프론트쉘에 제동시 브레이크페달이 가압되는 속도를 측정하도록 장착된 트래블센서와, 상기 프론트 체임버와 리어 체임버로 공기를 유입시키도록 각기 독립적으로 장착된 제1출력밸브와 제2출력밸브, 상기 트래블센서와 제1출력밸브 및 제2출력밸브에 각기 연결된 제어유니트가 부가된 것을 특징으로 한다.The present invention for achieving the above object, the valve body located in the closed space formed by the front shell, the rear shell and the boot, a center plate arranged to partition the inner space on the valve body, the center plate and A tandem brake booster comprising a front chamber formed by a second diaphragm and a rear chamber formed by the rear shell and the first diaphragm, the tandem brake booster mounted on the front shell to measure a speed at which the brake pedal is pressed during braking. A control unit connected to the travel sensor, the first output valve and the second output valve, and the travel sensor, the first output valve, and the second output valve, each independently mounted to introduce air into the front chamber and the rear chamber, It is characterized by the addition.

이하 본 고안의 실시예를 첨부된 예시도면을 참조로 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 3은 본 고안에 따른 브레이크 부스터의 구성도이고, 도 4는 본 고안에 따른 브레이크 부스터에서 정상제동시와 급제동시의 입력 대비 출력을 나타낸 그래프이다.3 is a configuration diagram of a brake booster according to the present invention, Figure 4 is a graph showing the output versus the input during normal braking and braking in the brake booster according to the present invention.

본 고안은 도면에 도시된 바와 같이, 강판제의 프론트쉘(1)과 리어쉘(2) 및 부트(3)가 형성하는 폐공간내에 밸브바디(4)가 위치하고, 이 밸브바디(4)내에 브레이크 페달과 크레비스(5)를 매개로 연결된 인풋로드(6)와 컨트롤플런져(7) 및 리액션디스크(8) 그리고 아웃풋로드(9)가 위치되며, 또한 상기 밸브바디(4)에 센터플레이트(10)가 내부공간을 구획짓도록 배치되고, 이 센터플레이트(10)와 제2다이아프램(11)이 프론트 체임버(12)를 형성하며, 상기 리어쉘(2)과 제1다이아프램(13)이 리어 체임버(14)를 형성하도록 된 탠덤식 브레이크 부스터에 있어서, 상기 프론트쉘(1)에는 제동시 브레이크페달이 가압되는 속도를 측정하도록 된 트래블센서(15)가 장착되고, 상기 프론트 체임버(12)와 리어 체임버(14)로는 외부의 공기를 유입시킬 수 있는 제1출력밸브(16)와 제2출력밸브(17)가 각각 독립적으로 장착되어 있으며, 이 트래블센서(15)와 제1출력밸브(16) 및 제2출력밸브(17)은 각기 제어유니트(18)와 연결되어 있다.According to the present invention, as shown in the drawing, the valve body 4 is located in a closed space formed by the front shell 1, the rear shell 2, and the boot 3 made of steel, and in the valve body 4 An input rod 6, a control plunger 7, a reaction disc 8, and an output rod 9, which are connected via a brake pedal and a crevis 5, are located, and a center plate 10 is arranged to partition the inner space, the center plate 10 and the second diaphragm 11 forms a front chamber 12, the rear shell 2 and the first diaphragm 13 In the tandem brake booster configured to form the rear chamber (14), the front shell (1) is equipped with a travel sensor (15) for measuring the speed at which the brake pedal is pressed during braking, and the front chamber (12) ) And the rear chamber 14, the first output valve 16 and the second output that can introduce external air Rove is 17 is connected to each and are mounted independently and the travel sensor 15 and the first outlet valve 16 and the second outlet valve 17 are each controlled unit (18).

여기서 상기 트래블센서(15)는 제동시 브레이크페달의 가압거리와 시간을 근거로 하여 브레이크페달의 가압속도를 측정하여 이를 제어유니트(18)로 신호보내도록 되어 있다.In this case, the travel sensor 15 measures the pressurization speed of the brake pedal based on the pressurization distance and time of the brake pedal and sends the signal to the control unit 18.

또한, 상기 제어유니트(18)는 프론트쉘(1)에 장착된 트래블센서(15)로부터 제동시 브레이크페달의 가압속도를 검출받아, 이 브레이크페달의 가압속도에 따라 상기 프론트 체임버(12)와 리어 체임버(14)에 각기 독립적으로 장착된 제1출력밸브(16)과 제2출력밸브(17)에 제어신호를 보내 각 체임버내로 동일한 속도의 외기가 주입될 수 있도록 해 준다.In addition, the control unit 18 receives the pressing speed of the brake pedal when braking from the travel sensor 15 mounted on the front shell 1, and according to the pressing speed of the brake pedal, the front chamber 12 and the rear By sending a control signal to the first output valve 16 and the second output valve 17 each independently mounted in the chamber 14 allows the outside air of the same speed to be injected into each chamber.

따라서 상기와 같이 제동시 프론트 체임버(12)와 리어 체임버(14)내로 유입되는 공기가 제어유니트(18)에 의해 제어받는 제1출력밸브(16)와 제2출력밸브(17)를 매개로 동일한 속도로 유입되면, 정상제동시나 급제동시 부스터의 응답성은 도 4에 도시된 그래프에서와 같이, 동일하게 되므로 제동의 응답성이 향상되게 된다.Therefore, as described above, the air flowing into the front chamber 12 and the rear chamber 14 during braking is the same through the first output valve 16 and the second output valve 17 controlled by the control unit 18. When flowing at the speed, the responsiveness of the booster during normal braking or sudden braking becomes the same as in the graph shown in FIG. 4, thereby improving the responsiveness of braking.

또한, 상기와 같이 제1출력밸브(16)와 제2출력밸브(17)를 매개로 외부의 공기가 유입되면, 종래와 같이 부스터의 작동시 부트(3)를 통해 공기가 유입되면서 발생되던 흡음소음에 관련된 단점이 해소되게 된다.In addition, when the outside air is introduced through the first output valve 16 and the second output valve 17 as described above, the sound absorbing generated as the air is introduced through the boot (3) during the operation of the booster as in the prior art The disadvantages associated with noise are eliminated.

이상 설명한 바와 같이 본 고안에 따른 응답성향상을 위한 브레이크 부스터구조에 의하면, 상기 탠덤식 브레이크 부스터의 작동시 브레이크페달의 가압속도에 따라 독립적인 제어신호를 보내는 제어유니트를 매개로 프론트 체임버와 리어 체임버의 내부로 유입되는 공기가 동일한 속도로 유입됨으로써, 부스터의 응답성이 향상될 수 있는 효과가 있게 되는 것이다.As described above, according to the brake booster structure for improving the responsiveness according to the present invention, when the tandem brake booster is operated, the front chamber and the rear chamber are controlled through a control unit that transmits an independent control signal according to the pressurization speed of the brake pedal. By introducing the air flowing into the inside at the same speed, the response of the booster is to be improved.

Claims (1)

프론트쉘(1)과 리어쉘(2) 및 부트(3)가 형성하는 폐공간내에 위치한 밸브바디(4)와, 이 밸브바디(4)내에 설치된 인풋로드(6)와 컨트롤플런져(7)와 리액션디스크(8) 및 아웃풋로드(9), 상기 밸브바디(4)에 내부공간을 구획짓도록 배치된 센터플레이트(10), 이 센터플레이트(10)와 제2다이아프램(11)이 형성하는 프론트 체임버(12), 상기 리어쉘(2)과 제1다이아프램(13)이 형성하는 리어 체임버(14)로 구성되는 탠덤식 브레이크 부스터에 있어서,Valve body (4) located in the closed space formed by the front shell (1), rear shell (2) and the boot (3), input rod (6) and control plunger (7) installed in the valve body (4) And a reaction disc 8 and an output rod 9, a center plate 10 arranged to partition an internal space in the valve body 4, the center plate 10 and the second diaphragm 11. In the tandem brake booster composed of the front chamber 12, the rear shell 2 and the rear chamber 14 formed by the first diaphragm 13, 상기 프론트쉘(1)에 제동시 브레이크페달이 가압되는 속도를 측정하도록 장착된 트래블센서(15)와, 상기 프론트 체임버(12)와 리어 체임버(14)로 공기를 유입시키도록 각기 독립적으로 장착된 제1출력밸브(16)와 제2출력밸브(17), 상기 트래블센서(15)와 제1출력밸브(16) 및 제2출력밸브(17)에 각기 연결된 제어유니트(18)가 부가된 것을 특징으로 하는 응답성향상을 위한 브레이크 부스터구조.The travel sensor 15 is mounted to measure the speed at which the brake pedal is pressurized when braking the front shell 1, and is independently mounted to introduce air into the front chamber 12 and the rear chamber 14, respectively. The control unit 18 is connected to the first output valve 16 and the second output valve 17, the travel sensor 15 and the first output valve 16 and the second output valve 17, respectively. Brake booster structure for improved response.
KR2019970032450U 1997-11-17 1997-11-17 brake booster structure for enhanced response KR200202981Y1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8196505B2 (en) 2008-07-31 2012-06-12 Hyundai Motor Company Brake booster

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8196505B2 (en) 2008-07-31 2012-06-12 Hyundai Motor Company Brake booster

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