KR100271286B1 - Brake system with alert means when brake is abnormal status - Google Patents

Brake system with alert means when brake is abnormal status Download PDF

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Publication number
KR100271286B1
KR100271286B1 KR1019970056510A KR19970056510A KR100271286B1 KR 100271286 B1 KR100271286 B1 KR 100271286B1 KR 1019970056510 A KR1019970056510 A KR 1019970056510A KR 19970056510 A KR19970056510 A KR 19970056510A KR 100271286 B1 KR100271286 B1 KR 100271286B1
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South Korea
Prior art keywords
piston
pressure
brake
valve
ball
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KR1019970056510A
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Korean (ko)
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KR19990034813A (en
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이유상
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밍루
주식회사만도
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Priority to KR1019970056510A priority Critical patent/KR100271286B1/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
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • 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
    • B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
    • B60T2201/08—Lane monitoring; Lane Keeping Systems
    • B60T2201/082—Lane monitoring; Lane Keeping Systems using alarm actuation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/81—Braking systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/90—Driver alarms

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

PURPOSE: A brake system for a vehicle is provided to check the abnormality of a brake pressure transmitted to a wheel cylinder by the naked eye via a display part and prevent the danger of accident due to the malfunction of a pressure reduction valve and a brake system. CONSTITUTION: A brake system for a vehicle includes a master cylinder for generating a braking pressure, a wheel cylinder(20) receiving the braking pressure of the master cylinder for compressing a brake shoe to a drum to generate a braking force, a pressure reduction valve(30) mounted on an oil channel connecting the master cylinder to the wheel cylinder, a pressure sensing valve(40) mounted on an oil channel between the pressure reduction valve and the wheel cylinder, and a display for displaying an operation state of the pressure sensing valve, wherein the pressure sensing valve includes a valve body(42) mounted with a piston(46) to reciprocate to and fro, a spring(44) mounted in the valve body for elastically supporting an end of the piston, a control screw for controlling elasticity while supporting the piston, grooves(46a) formed on an outer surface of the piston, a ball(52) received in the groove partially and moving to and fro in association with the piston, and a switch lead(54) operating in association with the ball to apply power to the display according to the motion of the ball.

Description

차량용 브레이크 시스템Car brake system

본 발명은 차량의 제동시 브레이크에 걸리는 압력의 정도를 감지하여 정상상태가 아님이 판단되면 운전자에게 경고하도록 된 차량용 브레이크 시스템에 관한 것이다.The present invention relates to a brake system for a vehicle that detects a degree of pressure applied to a brake when braking the vehicle and warns a driver when it is determined that the vehicle is not in a normal state.

차량용 브레이크 시스템은 주행하는 차량을 감속 또는 정지시킴과 동시에 정차상태를 유지하기 위해 사용되는 중요한 장치이다. 이러한 브레이크 시스템 중 유압식 브레이크는 마스터실린더에서 발생된 제동유압을 오일파이프를 통해 차량의 바퀴측에 장착된 휠 실린더로 공급하여 바퀴의 제동이 이루어지도록 한다. 또한 유압브레이크의 유로 중도에는 휠 실린더에 적정한 제동압이 전달될 수 있도록 마스터실린더에서 공급되는 제동유압을 감압하는 감압밸브가 마련되어 있다.A vehicle brake system is an important device used to keep a vehicle stopped while simultaneously decelerating or stopping a vehicle. Among these brake systems, the hydraulic brake supplies braking hydraulic pressure generated in the master cylinder to the wheel cylinders mounted on the wheel side of the vehicle through the oil pipe to brake the wheels. In addition, a pressure reducing valve is provided at the midway of the hydraulic brake to reduce the braking pressure supplied from the master cylinder so that an appropriate braking pressure can be transmitted to the wheel cylinder.

그런데, 이러한 구성의 종래 차량용 브레이크 시스템은 감압밸브가 정상적인 기능을 발휘하지 못하여 휠 실린더로 전해지는 브레이크압이 과다할 경우, 차량이 정상적으로 제동되지 아니하고 차체가 선회를 하여 사고의 위험을 초래할 수 있는 문제점이 있었다.However, in the conventional brake system for a vehicle having such a configuration, when the pressure reducing valve does not function normally and the brake pressure transmitted to the wheel cylinder is excessive, the vehicle may not be braked normally and the vehicle may turn, causing a risk of an accident. There was this.

본 발명은 상기와 같은 문제점을 감안하여 안출된 것으로, 본 발명의 목적은 휠 실린더에 전달되는 브레이크압의 적정여부를 감지할 수 있는 압력감지밸브를 설치하여 브레이크압에 이상이 발생되면 운전자에게 경고하여 점검할 수 있도록 하는 차량용 브레이크 시스템을 제공하는 것이다.The present invention has been made in view of the above problems, an object of the present invention is to install a pressure sensing valve that can detect whether the brake pressure is delivered to the wheel cylinder is appropriate to warn the driver when an abnormality in the brake pressure occurs It is to provide a vehicle brake system that can be inspected by.

도1은 본 발명에 따른 압력감지밸브가 적용된 브레이크 시스템의 구성도이다.1 is a block diagram of a brake system to which a pressure sensing valve according to the present invention is applied.

도2는 본 발명에 따른 압력감지밸브의 구성을 보인 단면도이다.2 is a cross-sectional view showing the configuration of a pressure sensing valve according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 마스터 실린더 20 : 휠 실린더10: master cylinder 20: wheel cylinder

30 : 감압밸브 40 : 압력감지밸브30: pressure reducing valve 40: pressure sensing valve

42 ; 밸브바디 44 : 스프링42; VALVE BODY 44: SPRING

46 : 피스톤 46a : 홈46: piston 46a: groove

52 : 볼 54 : 스위치리드52: ball 54: switch lead

상기의 목적을 달성하기 위한 본 발명에 따른 차량용 브레이크 시스템은, 제동압을 생성하는 마스터실린더와, 상기 마스터 실린더의 제동압을 전달받아 브레이크슈를 드럼에 압착하여 제동력을 발생시키는 휠 실린더와, 상기 마스터실린더와 상기 휠 실린더를 연결하는 유로의 중도에 설치된 감압밸브와, 상기 감압밸브와 상기 휠 실린더 사이의 유로에 설치된 압력감지밸브와, 상기 압력 감지밸브의 동작상태를 나타내는 표시부를 포함하는 차량용 브레이크 시스템에 있어서, 상기 압력감지밸브는 내부에 피스톤이 진퇴 가능하게 설치된 밸브바디와, 상기 밸브바디 내에 설치되어 상기 피스톤의 일단을 탄력 지지하는 스프링과, 상기 스프링을 지지하면서 탄성력을 조정하도록 상기 밸브바디 일단에 설치된 조정나사와, 상기 피스톤의 외면에 형성된 홈과, 상기 홈에 그 일부가 수용되도록 설치되어서 상기 피스톤의 동작시 진퇴하는 볼과, 상기 볼과 연동하면서 상기 볼의 움직임에 따라 상기 표시부에 전원을 인가하는 스위치드리드를 포함하는 것을 특징으로 한다.A vehicle brake system according to the present invention for achieving the above object, a master cylinder for generating a braking pressure, a wheel cylinder for receiving a braking pressure of the master cylinder to generate a braking force by pressing the brake shoe to the drum, and A vehicle brake including a pressure reducing valve provided in the middle of a flow path connecting the master cylinder and the wheel cylinder, a pressure sensing valve provided in the flow path between the pressure reducing valve and the wheel cylinder, and a display indicating an operation state of the pressure sensing valve. In the system, the pressure sensing valve is a valve body in which a piston is retractable therein, a spring installed in the valve body to elastically support one end of the piston, and the valve body to adjust the elastic force while supporting the spring An adjustment screw provided at one end and formed on an outer surface of the piston And, it is installed to be partially received in the groove characterized in that it includes a switched-lead for the power supply to the display section in accordance with the movement of the ball and to advance and retreat operation of the piston, and in conjunction with the ball is.

이하, 본 발명에 따른 바람직한 실시 예를 첨부도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명에 의한 차량용 브레이크 시스템은 도1에 도시된 바와 같이, 브레이크페달과 연결되어 제동유압을 발생시키는 마스터 실린더(10)와, 이 마스터실린더(10)의 제도유압을 전달받아 바퀴축의 브레이크슈를 드럼에 압착하여 제동력을 발생시키는 휠 실린더(20)를 구비한다.As shown in FIG. 1, the brake system for a vehicle according to the present invention receives a master cylinder 10 connected to a brake pedal to generate braking hydraulic pressure, and a draft hydraulic pressure of the master cylinder 10 to receive a brake shoe on a wheel shaft. The wheel cylinder 20 is pressed against the drum to generate a braking force.

또 마스터실린더(10)와 휠 실린더(20)를 연결하는 유로의 중도에는 휠 실린더(20)로 전달되는 브레이크압을 감압시켜서 바퀴에 적정한 브레이크압이 가해지도록 하는 감압밸브(30)가 설치된다. 그리고 감압밸브(30)와 휠 실린더(20) 사이의 유로에는 휠 실린더(20)로 전해지는 브레이크압을 감지하기 위한 압력감지밸브(40)가 설치되어 있으며, 압력감지밸브(40)에는 그 동작 상태를 운전자에게 인식시키기 위한 표시브(50)가 연결되어 있다.In the middle of the flow path connecting the master cylinder 10 and the wheel cylinder 20, a pressure reducing valve 30 is provided to reduce the brake pressure transmitted to the wheel cylinder 20 so that an appropriate brake pressure is applied to the wheel. In addition, a pressure sensing valve 40 for sensing a brake pressure transmitted to the wheel cylinder 20 is installed in the flow path between the pressure reducing valve 30 and the wheel cylinder 20, and the pressure sensing valve 40 operates. The indicator 50 is connected to the driver to recognize the state.

여기서 압력감지밸브(40)는 도2에 도시된 바와 같이, 감압밸브(30)와 휠 실린더(20)의 사이를 연결하는 유로에 연통되도록 설치된 밸브바디(42)의 내부에 진퇴가능한 피스톤(46)이 설치된 것으로, 유로의 압력에 따라 피스톤(46)이 밸브바디(42) 내부에서 진퇴하도록 된 것이다. 이때 피스톤(46)의 일단은 스프링(44)에 지지되어 있고, 스프링(44)은 탄성력을 조정하기 위한 조정나사(48)에 지지되어 있다. 즉, 조정나사(48)를 조이거나 풀므로써 스프링(44)의 탄성력을 조정할 수 있도록 되어있다.As shown in FIG. 2, the pressure sensing valve 40 is a retractable piston 46 inside the valve body 42 installed to communicate with a flow path connecting between the pressure reducing valve 30 and the wheel cylinder 20. ) Is installed so that the piston 46 moves in and out of the valve body 42 according to the pressure of the flow path. At this time, one end of the piston 46 is supported by the spring 44, the spring 44 is supported by an adjustment screw 48 for adjusting the elastic force. That is, the elastic force of the spring 44 can be adjusted by tightening or loosening the adjustment screw 48.

또한, 피스톤(46)의 외면 일측에는 둘레를 따라 홈(46a)이 형성되어 있고, 이 홈(46a)에는 스프링(56)에 의해 탄력 지지되는 볼(52)이 삽입되어 있다. 그리고 이 볼(52)에는 볼(52)과 함께 움직이는 스위치리드(54)가 연결되어 있어서, 피스톤(46)의 진퇴동작에 따라 볼(52)이 움직일 때 전원이 연결되어 상술한 표시부(50)을 점등하도록 되어있다. 이때 피스톤(46)의 동작에 따라 볼(52)이 용이하게 진퇴하도록 하기 위해서는 피스톤(46)의 운동방향과 볼(52)의 진퇴방향이 거의 수직을 이루도록 하는 것이 바람직하다.In addition, a groove 46a is formed along one circumference of one side of the outer surface of the piston 46, and a ball 52 elastically supported by the spring 56 is inserted into the groove 46a. In addition, the ball 52 is connected to the switch lead 54 which moves together with the ball 52, the power is connected when the ball 52 moves in accordance with the movement of the piston 46, the display unit 50 described above Lights up. At this time, in order for the ball 52 to easily retreat according to the operation of the piston 46, it is preferable that the movement direction of the piston 46 and the advancing direction of the ball 52 become substantially perpendicular.

다음은 이와 같은 구성의 압력감지밸브(40)가 설치된 차량용 브레이크 시스템의 동작을 설명한다.Next, the operation of the brake system for a vehicle in which the pressure sensing valve 40 is configured as described above will be described.

마스터 실린터로(10)부터 전달되는 브레이크압은 감압밸브(30)를 거치면서 감압되어 휠 실린더(20)에 적정한 제동압이 가해지도록 한다. 이때 감압밸브(30)의 출구압력이 정상이면 압력감지밸브(40)의 피스톤(46)이 움직이지 않지만, 감압밸브(30)의 출구압력이 기준치보다 크면 압력감지밸브(40)의 피스톤(460이 후진하게 되고, 피스톤(46)의 외주면 둘레의 형성된 홈(46a)에 삽입되었떤 볼(52)이 후진을 하면서 스위치리드(54)를 통전하여 표시부(50)에 점등을 하게 된다. 따라서 운전자가 브레이크 시스템의 이상여부를 미리 판단하여 점검할 수 있게 된다.The brake pressure transmitted from the master cylinder furnace 10 is reduced by passing the pressure reducing valve 30 so that an appropriate braking pressure is applied to the wheel cylinder 20. At this time, if the outlet pressure of the pressure reducing valve 30 is normal, the piston 46 of the pressure sensing valve 40 does not move, but if the outlet pressure of the pressure reducing valve 30 is greater than the reference value, the piston 460 of the pressure sensing valve 40 This reverses, and the ball 52 inserted into the groove 46a formed around the outer circumferential surface of the piston 46 moves backward through the switch lead 54 to light up the display unit 50. It is possible to check in advance whether the brake system is abnormal.

이상에서 상세히 설명한 바와 같이, 본 발명에 따른 차량용 브레이크 시스템은 표시부를 통해 휠 실린더에 전달되는 브레이크압의 이상여부를 육안으로 확인할 수 있게됨에 따라, 감압밸브 및 브레이크 시스템의 작동불량에 따른 사고의 위험을 미리 방지할 수 있는 효과가 있다.As described in detail above, the vehicle brake system according to the present invention can visually check whether the brake pressure transmitted to the wheel cylinder through the display unit with the naked eye, the risk of accidents due to malfunction of the pressure reducing valve and the brake system There is an effect that can be prevented in advance.

Claims (1)

제동압을 생성하는 마스터실린더(10)와, 상기 마스터 실린더(10)의 제동압를 전달받아 브레이크슈를 드럼에 압착하여 제동력을 발생시키는 휠 실린더(20)와, 상기 마스터실린더(20)와 상기 휠 실린더(20)를 연결하는 유로의 중도에 설치된 감압밸브(30)와, 상기 감압밸브(30)와 상기 휠 실린더(20) 사이의 유로에 설치된 압력 감지밸브(40)와, 상기 압력 감지밸브(40)의 동작상태를 나타내는 표시부(50)를 포함하는 차량용 브레이크 시스템에 있어서, 상기 압력감지밸브(40)는 내부에 피스톤(46)이 진퇴 가능하게 설치된 밸브바디(42)와, 상기 밸브바디(42) 내에 설치되어 상기 피스톤(46)의 일단을 탄력 지지하는 스프링(44)과, 상기 피스톤(44)을 지지하면서 탄성력을 조정하도록 된 조정나사(48)와, 상기 피스톤(46)의 외면에 형성된 홈(46a)과, 상기 홈(46a)에 그 일부가 수용되도록 설치되어서 상기 피스톤(46)의 동작시 신퇴하는 볼(52)과, 상기 볼(52)과 연동하면서 상기 볼(52)의 움직임에 따라 상기 표시부(50)에 전원을 인가하는 스위치리드(54)를 포함하는 것을 특징으로 하는 차량용 브레이크 시스템.The master cylinder 10 for generating the braking pressure, the wheel cylinder 20 for generating a braking force by pressing the brake shoe of the master cylinder 10 to compress the brake shoe to the drum, the master cylinder 20 and the wheel A pressure reducing valve 30 provided in the middle of the flow path connecting the cylinder 20, a pressure sensing valve 40 provided in the flow path between the pressure reducing valve 30 and the wheel cylinder 20, and the pressure sensing valve ( In the brake system for a vehicle including a display unit 50 indicating the operation state of the 40, the pressure sensing valve 40 is a valve body 42, the piston 46 is provided so that the piston 46 can be retracted therein, and the valve body ( On the outer surface of the piston 46, a spring 44 for resiliently supporting one end of the piston 46, an adjustment screw 48 for adjusting the elastic force while supporting the piston 44, The groove 46a formed and a part thereof are accommodated in the groove 46a. A ball 52 that retracts and retracts during operation of the piston 46, and a switch lead 54 that supplies power to the display unit 50 in accordance with the movement of the ball 52 while interlocking with the ball 52. Vehicle brake system comprising a).
KR1019970056510A 1997-10-30 1997-10-30 Brake system with alert means when brake is abnormal status KR100271286B1 (en)

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KR1019970056510A KR100271286B1 (en) 1997-10-30 1997-10-30 Brake system with alert means when brake is abnormal status

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KR1019970056510A KR100271286B1 (en) 1997-10-30 1997-10-30 Brake system with alert means when brake is abnormal status

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KR100271286B1 true KR100271286B1 (en) 2000-11-01

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