KR100589185B1 - vacuum pressure production device of brake booster - Google Patents

vacuum pressure production device of brake booster Download PDF

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Publication number
KR100589185B1
KR100589185B1 KR1020040043510A KR20040043510A KR100589185B1 KR 100589185 B1 KR100589185 B1 KR 100589185B1 KR 1020040043510 A KR1020040043510 A KR 1020040043510A KR 20040043510 A KR20040043510 A KR 20040043510A KR 100589185 B1 KR100589185 B1 KR 100589185B1
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South Korea
Prior art keywords
pipe
pressure chamber
negative pressure
vacuum pump
brake booster
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KR1020040043510A
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Korean (ko)
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KR20050118397A (en
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김민철
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현대자동차주식회사
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    • 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
    • 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
    • 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
    • B60T13/66Electrical control in fluid-pressure brake systems
    • B60T13/68Electrical control in fluid-pressure brake systems by electrically-controlled 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
    • 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
    • B60T13/66Electrical control in fluid-pressure brake systems
    • B60T13/72Electrical control in fluid-pressure brake systems in vacuum systems or vacuum 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
    • B60T13/74Transmitting 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
    • B60T13/748Transmitting 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 electro-magnetic brakes
    • 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
    • B60T17/00Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/04Arrangements of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses

Abstract

본 발명은 브레이크부스터의 부압 발생장치에 관한 것으로, 브레이크페달센서(30)를 통해 브레이크페달(31)의 작동유무를 판별하는 콘트롤러(40)와, 브레이크부스터(10)의 정압실(A)과 메인파이프(51)를 통해 연결되는 진공펌프(50)와, 일단은 상기 진공펌프(50)로 연결되는 출력축(61)과 연결되고 타단은 동력전달수단(70)을 매개로 드라이브샤프트(80)와 연결되면서 중간의 소정부위가 상기 콘트롤러(40)의 제어에 따라 선택적으로 접단속되는 전자석클러치(60)로 구성되어져, 브레이크페달(31)의 작동시 브레이크부스터(10)의 정압실(A)에는 제동시 필요한 부압(진공압)이 충분히 발생되도록 된 것이다.The present invention relates to a negative pressure generating device of the brake booster, the controller 40 for determining whether the brake pedal 31 is operated through the brake pedal sensor 30, the positive pressure chamber (A) of the brake booster 10 and The vacuum pump 50 connected through the main pipe 51, one end is connected to the output shaft 61 is connected to the vacuum pump 50 and the other end is the drive shaft 80 via the power transmission means 70 And a predetermined portion of the intermediate portion is composed of an electromagnet clutch 60 which is selectively engaged under the control of the controller 40, and the positive pressure chamber A of the brake booster 10 when the brake pedal 31 is operated. There is enough to generate the negative pressure (vacuum pressure) required during braking.

Description

브레이크부스터의 부압 발생장치{vacuum pressure production device of brake booster}Vacuum pressure production device of brake booster
도 1은 일반적으로 사용되는 브레이크부스터를 설명하기 위한 개념도,1 is a conceptual diagram illustrating a brake booster which is generally used;
도 2는 본 발명에 따른 부압 발생장치의 구성을 설명하기 위한 개념도이다.2 is a conceptual view for explaining the configuration of the negative pressure generating device according to the present invention.
< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>
10 - 브레이크부스터 30 - 브레이크페달센서10-Brake Booster 30-Brake Pedal Sensor
40 - 콘트롤러 50 - 진공펌프40-controller 50-vacuum pump
60 - 전자석클러치 70 - 동력전달수단60-Electromagnetic Clutch 70-Power Transmission
80 - 드라이브샤프트 110 - 부압센서80-Drive Shaft 110-Negative Pressure Sensor
120 - 진공탱크 130 - 진공탱크솔레노이드밸브120-Vacuum Tank 130-Vacuum Tank Solenoid Valve
140 - 삼방향솔레노이드밸브 A - 정압실140-Three-way Solenoid Valve A-Constant Pressure Room
B - 변압실B-transformer chamber
본 발명은 브레이크페달의 작동시 진공펌프의 구동력을 이용하여 브레이크부스터의 정압실로 제동시 필요한 부압을 충분히 발생시킬 수 있도록 하는 브레이크 부스터의 부압 발생장치에 관한 것이다.The present invention relates to a negative pressure generating device of a brake booster that can generate a sufficient negative pressure when braking to a positive pressure chamber of a brake booster by using a driving force of a vacuum pump during operation of a brake pedal.
일반적으로, 제동장치(break system)란 주행하는 자동차에 제동력을 발생시켜 자동차가 스스로 움직이지 않도록 하는 장치로서, 보통 브레이크페달의 조작에 따라 마스터실린더에서 발생/공급되는 유압에 의해 작동되게 된다.In general, a brake system is a device that generates a braking force on a driving vehicle so that the vehicle does not move by itself, and is normally operated by hydraulic pressure generated / supplied from the master cylinder according to the operation of the brake pedal.
즉, 자동차에는 제동력을 발생시키기 위해 운전자가 발로 밟아주게 되는 브레이크페달과, 엔진에서 발생되는 부압(진공압)과 대기압의 차이를 이용하여 브레이크페달의 밟는 힘을 증폭시키도록 된 브레이크부스터와, 상기 브레이크페달의 밟는 힘을 유압으로 전환시키도록 된 마스터실린더 및, 이 마스터실린더로부터 유압을 공급받아 실질적인 제동력을 발생시키도록 된 브레이크본체등이 장착되어 있다.That is, the vehicle has a brake pedal which the driver steps on to generate a braking force, a brake booster which amplifies the stepping force of the brake pedal by using a difference between the negative pressure (vacuum pressure) and the atmospheric pressure generated by the engine, and The master cylinder which converts the stepping force of a brake pedal into hydraulic pressure, and the brake body etc. which receive hydraulic pressure from this master cylinder and generate | occur | produce a real braking force are attached.
따라서, 운전자가 브레이크페달을 밟아주게 되면 페달의 답력에 의해 도 1에 도시된 브레이크부스터(10)의 오퍼레이팅로드(11)가 전진하게 되고, 상기 오퍼레이팅로드(11)가 전진함에 따라 밸브바디(12)에 포핏밸브(13)가 닿으면서 다이어프램(14)에 의해 분리되는 정압실(A)과 변압실(B)사이의 진공통로(C)를 막게 되며, 이와 동시에 상기 포핏밸브(13)와 플런저밸브(15)사이의 대기통로(D)가 개방되면서 상기 변압실(B)로 대기가 유입되게 된다.Therefore, when the driver steps on the brake pedal, the operating rod 11 of the brake booster 10 shown in FIG. 1 is advanced by the pedal effort of the pedal, and the valve body 12 is moved as the operating rod 11 is advanced. ) Closes the vacuum passage (C) between the positive pressure chamber (A) and the transformer chamber (B) separated by the diaphragm (14) while touching the poppet valve (13), and at the same time the poppet valve (13) and the plunger As the air passage D between the valves 15 is opened, air is introduced into the transformer chamber B.
그리고, 상기 밸브바디(12)가 계속해서 전진함에 따라 리액션디스크(16)가 변형되어 밸브바디(12)와 플런저밸브(15)사이의 간격을 없애게 되고, 상기 밸브바디(12)와 플런저밸브(15)사이의 간격이 없어짐에 따라 답력과 공압에 의한 추력이 푸시로드(17)를 통해 마스터실린더(20)의 피스톤(21)을 밀어서 액압(유압)을 발생시키게 된다.Then, as the valve body 12 continues to move forward, the reaction disk 16 is deformed to eliminate the gap between the valve body 12 and the plunger valve 15, and the valve body 12 and the plunger valve As the interval between the (15) disappears, the thrust by the stepping force and pneumatic pressure to push the piston 21 of the master cylinder 20 through the push rod 17 to generate a hydraulic pressure (hydraulic).
또한, 상기 마스터실린더(20)에 의해 발생된 유압은 브레이크파이프와 오일분배기 및 브레이크호스등을 통해 브레이크본체로 공급되게 되고, 이 브레이크본체로 공급된 유압은 브레이크슈 또는 브레이크패드를 드럼이나 디스크로 압착시킴으로써 그 마찰력에 의한 제동력을 발생시켜 주행중인 자동차가 정지하게 된다.In addition, the hydraulic pressure generated by the master cylinder 20 is supplied to the brake body through a brake pipe, an oil distributor, a brake hose, and the like, and the hydraulic pressure supplied to the brake body is a brake shoe or a brake pad to a drum or a disk. By pressing, the braking force generated by the frictional force is generated to stop the vehicle being driven.
한편, 제동력발생 이후 운전자가 브레이크페달에서 발을 떼면 압력스프링(18)이 탄성력에 의해 복원되면서 상기 오퍼레이팅로드(11)가 원래의 위치로 복귀되게 되고, 상기 오퍼레이팅로드(11)가 원래의 위치로 복귀됨과 동시에 포핏밸브(13)가 밸브바디(12)로부터 이탈되게 되며, 이때 상기 진공통로(C)를 통해 변압실(B)의 공기가 빠져나가면서 정압실(A)과 변압실(B)내의 압력이 같아지게 되고, 최종적으로는 리턴스프링(19)의 복원력에 의해 밸브바디(12)가 원래의 위치로 복귀되게 된다.On the other hand, when the driver releases the brake pedal after the braking force is generated, the pressure spring 18 is restored by the elastic force, and the operating rod 11 is returned to the original position, and the operating rod 11 is returned to the original position. At the same time, the poppet valve 13 is separated from the valve body 12, and at this time, the air of the transformer chamber B is discharged through the vacuum passage C, and the positive pressure chamber A and the transformer chamber B are discharged. The pressure inside is equal, and finally, the restoring force of the return spring 19 causes the valve body 12 to return to its original position.
그러나, 상기와 같은 종래의 브레이크부스터(10)는 정압실(A)에 발생되는 부압(진공압)이 엔진에 전적으로 의존하는 구조이므로, 만약 용량이 적은 엔진을 사용하는 경우에서 각종 전기장치의 작동으로 엔진에 부하가 많이 걸리는 경우나 또는 극히 짧은 시간내에 브레이크페달을 반복적으로 작동시킬 때에는, 상기 정압실(A)에 제동시 필요한 최소한의 부압(진공압)마저 충분히 발생되지 못하는 문제점이 있었다.However, the conventional brake booster 10 as described above has a structure in which the negative pressure (vacuum pressure) generated in the positive pressure chamber A depends entirely on the engine, and therefore, the operation of various electric devices in the case of using a low-capacity engine Therefore, when the engine is heavily loaded or repeatedly operates the brake pedal within an extremely short time, there is a problem that even the minimum negative pressure (vacuum pressure) necessary for braking the static pressure chamber A is not sufficiently generated.
이와 같이, 정압실(A)에 제동시 필요한 부압(진공압)이 충분히 발생하지 못하게 되면, 브레이크페달의 조작감이 나빠지게 됨은 물론 제동반응속도 및 제동성능이 감소되어 결국 안전사고가 유발되는 원인으로 작용하게 된다.As such, if the negative pressure (vacuum pressure) necessary for braking in the positive pressure chamber (A) is not sufficiently generated, the operation of the brake pedal becomes worse and the braking reaction speed and the braking performance are reduced, resulting in a safety accident. It will work.
이에 본 발명은 상기와 같은 문제점을 해소하기 위해 안출된 것으로, 정압실의 부압(진공압)이 엔진에 의해 발생되는 것이 아니라 브레이크페달의 작동시 드라이브샤프트의 동력을 전달받은 진공펌프의 구동력에 의해 발생되도록 함으로써, 엔진의 용량이나 또는 각종 전기장치의 사용에 상관없이 상기 정압실로 제동시 필요한 부압(진공압)을 충분히 발생시키도록 함은 물론, 이에 따라 제동성능의 증대를 유도하여 제동안정성을 향상시킬 수 있도록 하는 브레이크부스터의 부압 발생장치를 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the above problems, the negative pressure (vacuum pressure) of the constant pressure chamber is not generated by the engine, but by the driving force of the vacuum pump received the drive shaft power during operation of the brake pedal. It is possible to generate sufficient negative pressure (vacuum pressure) required for braking to the constant pressure chamber regardless of the engine capacity or the use of various electric devices. It is an object of the present invention to provide a negative pressure generating device of a brake booster.
또한, 본 발명의 다른 목적은 정압실과 선택적으로 연결되는 진공탱크를 함께 구성하여, 상기 정압실내에 제동시 필요한 부압(진공압)이 충분히 발생되지 않을 경우에는 진공탱크를 이용해 제동시 필요한 부압의 발생을 유도함으로써, 제동성능의 증대를 도모할 수 있는 것에 있다.In addition, another object of the present invention is to form a vacuum tank that is selectively connected to the positive pressure chamber, if the negative pressure (vacuum pressure) necessary for braking in the positive pressure chamber is not generated sufficiently to generate the negative pressure required for braking using the vacuum tank By inducing this, the braking performance can be increased.
상기와 같은 목적을 달성하기 위한 본 발명의 부압 발생장치는, 브레이크페달센서를 통해 브레이크페달의 작동유무를 판별하는 콘트롤러와, 브레이크부스터의 정압실과 메인파이프를 통해 연결되는 진공펌프와, 일단은 상기 진공펌프로 연결되는 출력축과 연결되고 타단은 동력전달수단을 매개로 드라이브샤프트와 연결되면서 중간의 소정부위가 상기 콘트롤러의 제어에 따라 선택적으로 접단속되는 전자석클러치로 구성되는 것을 특징으로 한다.The negative pressure generating device of the present invention for achieving the above object, a controller for determining whether the brake pedal is operated through the brake pedal sensor, a vacuum pump connected through the constant pressure chamber and the main pipe of the brake booster, one end is It is connected to the output shaft connected to the vacuum pump and the other end is connected to the drive shaft via a power transmission means characterized in that the predetermined portion of the middle is composed of an electromagnet clutch which is selectively engaged under the control of the controller.
이하 본 발명의 실시예를 첨부된 예시도면을 참조로 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 2는 본 발명에 따른 부압 발생장치의 구성을 설명하기 위한 개념도로서, 종래 구조와 동일한 부위에는 동일한 참조부호를 붙이면서 설명하기로 한다.2 is a conceptual diagram for explaining the configuration of the negative pressure generating device according to the present invention, and the same parts as in the conventional structure will be described with the same reference numerals.
본 발명은 브레이크페달의 작동시 드라이브샤프트의 동력을 전달받는 진공펌프의 구동력을 이용하여 브레이크부스터의 정압실로 부압을 발생시키도록 하는 부압 발생장치에 관한 것이다.The present invention relates to a negative pressure generating device for generating a negative pressure to the positive pressure chamber of the brake booster by using a driving force of a vacuum pump receiving power of the drive shaft when the brake pedal is operated.
즉, 본 발명에 따른 브레이크부스터의 부압 발생장치는 도 2에 도시된 바와 같이, 브레이크페달센서(30)를 통해 브레이크페달(31)의 작동유무를 판별하는 콘트롤러(40)와, 브레이크부스터(10)의 정압실(A)과 메인파이프(51)를 통해 연결되는 진공펌프(50)와, 일단은 상기 진공펌프(50)로 연결되는 출력축(61)과 연결되고 타단은 동력전달수단(70)을 매개로 드라이브샤프트(80)와 연결되면서 중간의 소정부위가 상기 콘트롤러(40)의 제어에 따라 선택적으로 접단속되는 전자석클러치(60)를 기본적으로 구성하여 이루어진다.That is, the negative pressure generating device of the brake booster according to the present invention, as shown in Figure 2, the controller 40 to determine the operation of the brake pedal 31 through the brake pedal sensor 30, the brake booster 10 Vacuum pump 50 is connected via a constant pressure chamber (A) and the main pipe 51 of the), one end is connected to the output shaft 61 is connected to the vacuum pump 50 and the other end is a power transmission means 70 The predetermined portion of the middle is connected to the drive shaft 80 via a medium consisting of the electromagnet clutch 60 which is selectively engaged under the control of the controller 40.
또한, 상기의 기본 구성외에 상기 정압실(A)의 부압을 검출하는 부압센서(110)와, 상기 정압실(A)과는 서포트입력파이프(121)를 통해 연결되고 상기 메인파이프(51)와는 서포트출력파이프(123)를 통해 연결되도록 설치되는 진공탱크(120)와, 상기 서포트입력파이프(121)상에 설치되면서 콘트롤러(40)의 제어에 따라 선택적으로 개폐작동이 이루어지는 진공탱크솔레노이드밸브(130)와, 상기 메인파이프(51)와 상기 서포트출력파이프(123)의 연결부에 설치되면서 상기 콘트롤러(40)의 제어에 따라 서포트출력파이프(123)가 메인파이프(51)와 연결되도록 작동되거나 또는 상기 서포트출력파이프(123)가 메인파이프(51)와 연결되지 못 하도록 작동되는 삼방향솔레노이드밸브(140)를 더 포함하여 구성되어 진다.In addition to the above basic configuration, the negative pressure sensor 110 for detecting the negative pressure of the positive pressure chamber A and the positive pressure chamber A are connected to each other via a support input pipe 121 and the main pipe 51. Vacuum tank 120 is installed to be connected through the support output pipe 123, and the vacuum tank solenoid valve 130 is installed on the support input pipe 121 and selectively opened and closed under the control of the controller 40 And the support output pipe 123 is installed to be connected to the main pipe 51 and the support output pipe 123 and connected to the main pipe 51 under the control of the controller 40. The support output pipe 123 is configured to further include a three-way solenoid valve 140 is operated so as not to be connected to the main pipe (51).
여기서, 상기 동력전달수단(70)은 한 개는 상기 드라이브샤프트(80)에 의해 중심이 관통되어 일체로 회전되도록 결합되고 다른 한 개는 전자석클러치(60)의 입력축(63)과 결합되면서 드라이브샤프트(80)의 동력전달 방향이 변환되도록 서로 치합되는 베벨기어(71)인 것을 특징으로 한다.Here, one of the power transmission means 70 is coupled to the center through the drive shaft 80 to be integrally rotated and the other is coupled to the input shaft 63 of the electromagnet clutch 60 drive shaft Characterized in that the bevel gears 71 engaged with each other so that the power transmission direction of (80) is converted.
그리고, 상기 진공탱크(120)는 상기 정압실(A)보다 큰 체적을 갖도록 형성된다.In addition, the vacuum tank 120 is formed to have a volume larger than that of the constant pressure chamber (A).
또한, 상기 메인파이프(51)는 삼방향솔레노이드밸브(140)를 기준으로 상기 정압실(A)쪽으로 연결되는 정압실측파이프(51a) 및 상기 진공펌프(50)쪽으로 연결되는 진공펌프측파이프(51b)로 분기되는데, 상기 서포트출력파이프(123)가 메인파이프(51)와 연결될 때 상기 서포트출력파이프(123)는 진공펌프측파이프(51b)와 연결되고 상기 정압실파이프(51a)와는 삼방향솔레노이드밸브(140)에 의해 연결이 차단되는 구조로 갖게 된다.In addition, the main pipe 51 is a positive pressure chamber side pipe 51a connected to the positive pressure chamber A toward the positive pressure chamber A based on the three-way solenoid valve 140 and a vacuum pump side pipe 51b connected to the vacuum pump 50. When the support output pipe 123 is connected to the main pipe 51, the support output pipe 123 is connected to the vacuum pump side pipe 51b and a three-way solenoid with the constant pressure chamber pipe 51a. It will have a structure in which the connection is blocked by the valve 140.
이하, 본 발명에 따른 부압 발생장치의 작동과정에 대해 도 2를 참조로 상세히 설명한다.Hereinafter, the operation of the negative pressure generating device according to the present invention will be described in detail with reference to FIG.
일정시간동안 브레이크페달(31)이 작동되지 않은 상태에 있다가 운전자의 답력에 의해 브레이크페달(31)이 최초로 작동하게 되면, 콘트롤러(40)는 브레이크페달센서(30)로부터 이때의 신호를 전달받아 제어신호를 보내 단속되어 있던 전자석클러치(60)를 접속시키고, 동시에 삼방향솔레노이드밸브(140)의 작동을 제어하여 정압실측파이프(51a) 및 진공펌프측파이프(51b)으로 구성된 메인파이프(51)를 연결 시키게 된다.When the brake pedal 31 is not operated for a predetermined time and the brake pedal 31 is operated for the first time by the driver's step, the controller 40 receives the signal from the brake pedal sensor 30 at this time. The main pipe 51 composed of the constant pressure side pipe 51a and the vacuum pump side pipe 51b by connecting the electromagnet clutch 60 intermittent by sending a control signal and controlling the operation of the three-way solenoid valve 140 at the same time. Will be connected.
이때, 진공탱크솔레노이드밸브(130)는 콘트롤러(40)의 제어에 의해 밀폐된 상태를 유지하고 있게 된다.At this time, the vacuum tank solenoid valve 130 is maintained in a closed state by the control of the controller (40).
이에 따라, 드라이브샤프트(80)의 회전력이 베벨기어(71)로 구성된 동력전달수단(70)과 전자석클러치(60)를 순차적으로 경유하여 진공펌프(50)쪽으로 전달되게 되고, 동시에 상기 진공펌프(50)가 구동되면서 정압실(A)내에 부압(진공압)을 발생시키게 된다.Accordingly, the rotational force of the drive shaft 80 is transmitted to the vacuum pump 50 via the power transmission means 70 and the electromagnetic clutch 60, which are composed of the bevel gear 71, and at the same time, the vacuum pump ( 50 is driven to generate negative pressure (vacuum pressure) in the positive pressure chamber (A).
즉, 브레이크페달(31)이 작동되면 변압실(B)로의 대기압 유입이 차단되고 또한 정압실(A)은 상기 변압실(B)과의 연결이 차단되어지게 되는 바, 이때 상기 진공펌프(60)가 구동되면 정압실(A)내의 공기가 메인파이프(51)를 통해 외부로 배출되어 짐으로써, 상기 정압실(A)은 부압(진공압)이 발생되어 지게 되는 것이다.That is, when the brake pedal 31 is operated, the inflow of atmospheric pressure into the transformer chamber B is blocked, and the connection of the constant pressure chamber A to the transformer chamber B is blocked. In this case, the vacuum pump 60 Is driven, the air in the positive pressure chamber (A) is discharged to the outside through the main pipe 51, the negative pressure (vacuum pressure) is generated in the positive pressure chamber (A).
따라서, 상기 브레이크페달(31)의 답력은 정압실(A)내에 부압(진공압)을 통해 증폭되어 마스터실린더(20)로 전달되게 되고, 상기 마스터실린더(20)는 증폭된 답력을 통해 유압을 발생시켜 브레이크본체쪽으로 공급하게 됨으로써, 차량은 발생된 제동력에 의해 정지상태를 유지하게 된다.Therefore, the pedal force of the brake pedal 31 is amplified through the negative pressure (vacuum pressure) in the positive pressure chamber A and is transferred to the master cylinder 20, and the master cylinder 20 receives the hydraulic pressure through the amplified pedal force. By being generated and supplied to the brake body, the vehicle is kept stationary by the generated braking force.
그리고, 운전자가 브레이크페달(31)에 가해주고 있던 답력을 제거하게 되면 콘트롤러(40)는 브레이크페달센서(30)로부터 이때의 신호를 전달받아 접속상태를 유지하고 있던 전자석클러치(60)를 단속시키고 동시에 메인파이프(51)를 연결의 차단시키기 위해 삼방향솔레노이드밸브(140)로 제어신호를 전달하게 된다.Then, when the driver removes the stepping force applied to the brake pedal 31, the controller 40 receives the signal from the brake pedal sensor 30 at this time and clamps the electromagnet clutch 60 that has maintained the connection state. At the same time, the control signal is transmitted to the three-way solenoid valve 140 to disconnect the main pipe 51.
이에 따라, 브레이크페달(31)이 후퇴 이동되어짐과 동시에 부압상태를 유지 하고 있던 정압실(A)은 대기압이 유입되는 변압실(B)과 연통되면서 상기 변압실(B)과 동일한 압력을 유지하게 되어, 다음번의 작동에 대비할 수 있게 된다.Accordingly, the brake pedal 31 is moved backwards and at the same time maintains a negative pressure state, the positive pressure chamber (A) is in communication with the transformer chamber (B) in which atmospheric pressure flows to maintain the same pressure as the transformer chamber (B) This will prepare for the next operation.
한편, 운전자가 짧은 시간내에 브레이크페달(31)을 반복적으로 작동시키거나 또는 용량이 적은 엔진을 사용하는 경우에서 각종 전기장치의 작동으로 엔진에 부하가 많이 걸리는 경우에는, 정압실(A)내의 공기가 메인파이프(51)를 통해 외부로 배출되더라도 상기 정압실(A)내에는 제동시 필요한 최소한의 부압(진공압)마저 충분히 발생되지 못하는 상황이 발생하게 된다.On the other hand, when the driver repeatedly operates the brake pedal 31 within a short time or uses an engine of low capacity, and the engine is heavily loaded by the operation of various electric devices, the air in the constant pressure chamber A Even though the gas is discharged to the outside through the main pipe 51, a situation in which even the minimum negative pressure (vacuum pressure) necessary for braking is not sufficiently generated in the positive pressure chamber (A).
이는, 부압센서(110)를 통해 검출된 상기 정압실(A)내의 압력이 콘트롤러(40)에 의해 기준부압(제동시 필요한 최소한의 부압)보다 부족한 상황으로 판별된 상태인 바, 이때에는 상기 콘트롤러(40)가 전자석클러치(60)를 접속시킴과 동시에 삼방향솔레노이드밸브(140)의 작동을 제어하여 메인파이프(51)의 진공펌프측파이프(51b)와 서포트출력파이프(123)을 서로 연결시키고, 더불어 밀폐되어 있던 진공탱크솔레노이드밸브(130)를 개방되도록 제어하여 상기 정압실(A)과 진공탱크(120)를 서로 연결시켜 주게 된다.This is a state in which the pressure in the positive pressure chamber A detected by the negative pressure sensor 110 is less than the reference negative pressure (minimum negative pressure required for braking) by the controller 40. In this case, the controller (40) connects the electromagnet clutch (60) and simultaneously controls the operation of the three-way solenoid valve (140) to connect the vacuum pump side pipe (51b) and the support output pipe (123) of the main pipe (51) to each other. In addition, the vacuum tank solenoid valve 130, which is hermetically sealed, is controlled to be opened to connect the positive pressure chamber A and the vacuum tank 120 to each other.
이에 따라, 상기 정압실(A)과 진공탱크(120)내에 존재하는 공기가 서포트출력파이프(123)와 진공펌프측파이프(51b)를 경유하여 외부로 배출되어짐으로써, 상기 정압실(A)내에는 제동시 필요한 부압(진공압)이 충분히 발생되어지게 된다.As a result, the air existing in the positive pressure chamber A and the vacuum tank 120 is discharged to the outside via the support output pipe 123 and the vacuum pump side pipe 51b, thereby allowing the air inside the positive pressure chamber A to be discharged. Negative pressure (vacuum pressure) necessary for braking is sufficiently generated.
따라서, 본 발명에 따른 부압 발생장치를 사용하게 되면 엔진의 용량이나 또는 각종 전기장치의 사용에 상관없이 브레이크부스터(10)의 정압실(A)에는 제동시 필요한 부압(진공압)이 충분히 발생되어지고, 아울러 제동성능의 증대를 통해 안정 된 제동이 이루어지는 잇점이 있게 된다.Therefore, when the negative pressure generator according to the present invention is used, a negative pressure (vacuum pressure) necessary for braking is sufficiently generated in the positive pressure chamber A of the brake booster 10 regardless of the engine capacity or the use of various electric devices. In addition, there is an advantage that stable braking is achieved through an increase in braking performance.
또한, 본 발명의 부압 발생장치는 정압실(A)내에 제동시 필요한 부압(진공압)이 충분히 발생되지 않더라도 진공탱크(120)에 의해 제동시 필요한 부압의 발생이 이루어지게 됨으로써, 제동성능의 증대가 이룩되는 잇점도 있게 된다.In addition, in the negative pressure generator of the present invention, even if the negative pressure (vacuum pressure) necessary for braking in the positive pressure chamber A is not sufficiently generated, the negative pressure necessary for braking is generated by the vacuum tank 120, thereby increasing the braking performance. There are also benefits to be achieved.
이상 설명한 바와 같이 본 발명에 의하면, 브레이크페달의 작동시 구동되는 진공펌프를 이용하여 브레이크부스터의 정압실에 제동시 필요한 부압(진공압)이 충분히 발생되도록 함으로써, 제동성능의 증대를 도모할 수 있게 되고 더불어 제동안정성이 향상되는 효과가 있게 된다.As described above, according to the present invention, by using a vacuum pump driven during operation of the brake pedal, a sufficient negative pressure (vacuum pressure) is generated in the positive pressure chamber of the brake booster so that the braking performance can be increased. In addition, there is an effect of improving the timeliness.

Claims (5)

  1. 브레이크페달센서(30)를 통해 브레이크페달(31)의 작동유무를 판별하는 콘트롤러(40)와,A controller 40 for determining whether the brake pedal 31 is operated through the brake pedal sensor 30;
    브레이크부스터(10)의 정압실(A)과 메인파이프(51)를 통해 연결되는 진공펌프(50)와,A vacuum pump 50 connected through the constant pressure chamber A of the brake booster 10 and the main pipe 51;
    일단은 상기 진공펌프(50)로 연결되는 출력축(61)과 연결되고 타단은 동력전달수단(70)을 매개로 드라이브샤프트(80)와 연결되면서 중간의 소정부위가 상기 콘트롤러(40)의 제어에 따라 선택적으로 접단속되는 전자석클러치(60)와,One end is connected to the output shaft 61 is connected to the vacuum pump 50 and the other end is connected to the drive shaft 80 via the power transmission means 70 while the predetermined portion in the middle of the control of the controller 40 Electromagnet clutch 60 is selectively engaged accordingly,
    정압실(A)의 부압을 검출하는 부압센서(110)와,A negative pressure sensor 110 for detecting a negative pressure in the positive pressure chamber A,
    상기 정압실(A)과는 서포트입력파이프(121)를 통해 연결되고 상기 메인파이프(51)와는 서포트출력파이프(123)를 통해 연결되도록 설치되는 진공탱크(120)와,A vacuum tank 120 connected to the constant pressure chamber A through a support input pipe 121 and connected to the main pipe 51 through a support output pipe 123;
    상기 서포트입력파이프(121)상에 설치되면서 콘트롤러(40)의 제어에 따라 선택적으로 개폐작동이 이루어지는 진공탱크솔레노이드밸브(130)와,A vacuum tank solenoid valve 130 installed on the support input pipe 121 and selectively opening / closing under the control of the controller 40;
    상기 메인파이프(51)와 상기 서포트출력파이프(123)의 연결부에 설치되면서 상기 콘트롤러(40)의 제어에 따라 서포트출력파이프(123)가 메인파이프(51)와 연결되도록 작동되거나 또는 상기 서포트출력파이프(123)가 메인파이프(51)와 연결되지 못하도록 작동되는 삼방향솔레노이드밸브(140)It is installed in the connection portion of the main pipe 51 and the support output pipe 123 and operated to be connected to the main output pipe 51 or the support output pipe 123 under the control of the controller 40 or the support output pipe. Three-way solenoid valve 140 is operated so that the 123 is not connected to the main pipe 51
    로 구성되는 브레이크부스터의 부압 발생장치.Negative pressure generating device of the brake booster.
  2. 제 1항에 있어서, 상기 동력전달수단(70)은The method of claim 1, wherein the power transmission means 70
    한 개는 상기 드라이브샤프트(80)와 일체로 회전되도록 결합되고 다른 한 개는 전자석클러치(60)의 입력축(63)과 결합되면서 드라이브샤프트(80)의 동력전달 방향이 변환되도록 서로 치합되는 베벨기어(71)인 것을 특징으로 하는 브레이크부스터의 부압 발생장치.One bevel gear is coupled to rotate with the drive shaft 80 and the other is coupled to the input shaft 63 of the electromagnet clutch 60 to be engaged with each other so that the power transmission direction of the drive shaft 80 is converted. A negative pressure generator of the brake booster, characterized in that (71).
  3. 삭제delete
  4. 제 1항에 있어서, 상기 진공탱크(120)는 상기 정압실(A)보다 큰 체적을 갖도록 형성되는 것을 특징으로 하는 브레이크부스터의 부압 발생장치.The negative pressure generator of claim 1, wherein the vacuum tank (120) is formed to have a volume larger than that of the constant pressure chamber (A).
  5. 제 1항에 있어서, 상기 메인파이프(51)는 삼방향솔레노이드밸브(140)를 기준으로 상기 정압실(A)쪽으로 연결되는 정압실측파이프(51a) 및 상기 진공펌프(50)쪽으로 연결되는 진공펌프측파이프(51b)로 분기되는데, 상기 서포트출력파이프(123)가 메인파이프(51)와 연결될 때 상기 서포트출력파이프(123)는 진공펌프측파이프(51b)와 연결되고 상기 정압실파이프(51a)와는 삼방향솔레노이드밸브(140)에 의해 연결이 차단되는 것을 특징으로 하는 브레이크부스터의 부압 발생장치.According to claim 1, The main pipe 51 is a positive pressure chamber side pipe 51a connected to the positive pressure chamber (A) toward the side of the three-way solenoid valve 140 and the vacuum pump connected to the vacuum pump 50 side Branched to the side pipe 51b, when the support output pipe 123 is connected to the main pipe 51, the support output pipe 123 is connected to the vacuum pump side pipe 51b and the constant pressure chamber pipe 51a. And the negative pressure generating device of the brake booster, characterized in that the connection is blocked by the three-way solenoid valve (140).
KR1020040043510A 2004-06-14 2004-06-14 vacuum pressure production device of brake booster KR100589185B1 (en)

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Cited By (1)

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US9168902B2 (en) 2013-03-19 2015-10-27 Hyundai Motor Company Method and system for controlling braking of vehicle

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Publication number Priority date Publication date Assignee Title
KR101428264B1 (en) * 2012-12-10 2014-08-07 현대자동차주식회사 Vacuum Brake Assembly With Vacuum Valve
KR101987498B1 (en) * 2013-11-21 2019-06-10 현대자동차주식회사 Dual Vacuum Route type Booster System
DE102013021871A1 (en) * 2013-12-21 2014-04-03 Audi Ag Motor vehicle has pressure generating- or pressure storage unit provided in brake circuit through which requirement-dependent pressure in brake circuit is automatically increased independent of another pressure generating- or storage unit
KR20190116766A (en) 2018-04-05 2019-10-15 현대자동차주식회사 Method and apparatus for verifying normal operation of brake booster vacuum pressure sensor
KR101987063B1 (en) * 2018-11-19 2019-06-10 주식회사 한중엔시에스 Vaccum booster type brake system
KR20200123667A (en) 2019-04-22 2020-10-30 현대자동차주식회사 Method to ensure negative pressure of brake booster

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9168902B2 (en) 2013-03-19 2015-10-27 Hyundai Motor Company Method and system for controlling braking of vehicle

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