KR960015697B1 - Oil-pressure control valve for a.b.s. system of automobiles - Google Patents
Oil-pressure control valve for a.b.s. system of automobiles Download PDFInfo
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- KR960015697B1 KR960015697B1 KR1019940007408A KR19940007408A KR960015697B1 KR 960015697 B1 KR960015697 B1 KR 960015697B1 KR 1019940007408 A KR1019940007408 A KR 1019940007408A KR 19940007408 A KR19940007408 A KR 19940007408A KR 960015697 B1 KR960015697 B1 KR 960015697B1
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- valve
- chamber
- sleeve
- control valve
- spring
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Classifications
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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
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/025—Electrically controlled valves
- B60T15/028—Electrically controlled valves in hydraulic systems
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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
- 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
-
- 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
- B60T8/38—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 including valve means of the relay or driver controlled type
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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
- 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
- B60T8/42—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 having expanding chambers for controlling pressure, i.e. closed systems
- B60T8/4275—Pump-back systems
- B60T8/4291—Pump-back systems having means to reduce or eliminate pedal kick-back
-
- 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
- B60T8/50—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 having means for controlling the rate at which pressure is reapplied to or released from the brake
- B60T8/5018—Pressure reapplication using restrictions
- B60T8/5025—Pressure reapplication using restrictions in hydraulic brake systems
- B60T8/5037—Pressure reapplication using restrictions in hydraulic brake systems closed systems
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Regulating Braking Force (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
Description
제1도는 ABS의 전체적인 구성도.1 is the overall configuration of the ABS.
제2도는 본 발명의 전자식 제어밸브장치의 단면구조도.2 is a cross-sectional view of the electronic control valve device of the present invention.
제3도는 본 발명의 기계식 제어밸브장치의 단면구조도.3 is a cross-sectional view of the mechanical control valve device of the present invention.
제4도는 본 발명의 단일밸브를 갖는 밸브제어장치의 단면구조도임.4 is a cross-sectional structural view of a valve control device having a single valve of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 모듈레이터 2 : 유량콘트롤밸브1: Modulator 2: Flow control valve
3 : 포트1 4 : 포트43: Port 1 4: Port 4
5 : 포트3 6 : 포트45: Port 3 6: Port 4
7 : 솔레노이드밸브 8 : 속도센서7: solenoid valve 8: speed sensor
9 : ECU 10 : 도관1, 11도관2, 12도관39: ECU 10: Conduit 1, 11 Conduit 2, 12 Conduit 3
15 : 제1포트 16 : 제1밸브실15: first port 16: first valve chamber
17 : 제2포트 18 : 첵크밸브17: 2nd port 18: check valve
19 : 제2밸브실 20 : 스프링19: second valve chamber 20: spring
21 : 주입유로 22 : 첵크밸브21: injection flow path 22: check valve
23 : 드레인유로 24 : 파일럿통로23: drain passage 24: pilot passage
24a : 입구부 25 : 제1밸브24a: inlet portion 25: first valve
26 : 제1슬리브 27 : 제2슬리브26: first sleeve 27: second sleeve
28 : 오리피스 29 : 스푸울28: Orifice 29: Spoul
30 : 스프링 31 : 드레인유로30: spring 31: drain flow path
32 : 제2밸브실 33 : 제3슬리브32: second valve chamber 33: third sleeve
34 : 제4슬리브 35 : 오리피스34: fourth sleeve 35: orifice
36 : 스푸울 37 : 스프링36: Spoul 37: Spring
38 : 지지스프링 39 : 볼밸브38: support spring 39: ball valve
40 : 밸브몸체 41 : 중간슬리브40: valve body 41: intermediate sleeve
42 : 상슬리브 43 : 하슬리브42: upper sleeve 43: lower sleeve
44 : 스프링 45 : 스푸울44: spring 45: spool
46 : 오리피스(orifice) 47 : 드레인유료46: orifice 47: drainage charge
48 : 지지스프링 49 : 첵크밸브48: support spring 49: check valve
50 : 안착부 51 : 스토퍼50: seating part 51: stopper
52 : 포트 53 : 드레인포트(Drain Port)52: Port 53: Drain Port
본 발명은 자동차용 안티록 브레이크시스템(이하 "ABS"라 한다)에 있어서, 유압력의 역류를 방지하는 동시에 유압력을 배중하여 보다 효과적인 안티록 브레이크를 가능하게 한 자동차용 ABS의 유압조정밸브에 관한 것이다.The present invention provides an anti-lock brake system for automobiles (hereinafter referred to as "ABS"), which prevents the backflow of hydraulic forces and simultaneously distributes the hydraulic forces to the hydraulic control valve of the ABS for automobiles to enable more effective anti-lock brakes. It is about.
자동차를 임의로 조정할 수 있기 위해서는 가감속 특성이 양호하여야 하며 특히 안전의 측면에서 제동특성이 우수하여야 한다. 제동력이 좋기 위하여는 제동력이 충분히 큰 것만으로는 부족하고 조향성능을 저해함이 없이 조작이 용이하고 인간과는 적합성이 좋은 동시에 오동작이나 고장이 없고 정비성이 등이 좋아야 하는 것이다.To be able to adjust the vehicle arbitrarily, the acceleration and deceleration characteristics should be good, and especially the safety characteristics should be excellent in terms of safety. In order for the braking force to be good, the braking force is not large enough, it is easy to operate without compromising steering performance, it is suitable for humans, and there should be no malfunction or failure and good maintainability.
자동차에 있어서 제동장치는 이같은 다양한 요구조건을 만족시키기 위하여 휠실린더어셈블리를 최종단으로 하여 브레이크 페달, 부스터, 유압레저브, 마스터실린더, 유압파이프, 압력조절밸브 등이 일체의 시스템화하고 있다.In automobiles, the brake system has a wheel cylinder assembly as a final stage in order to satisfy various requirements such as a brake pedal, a booster, a hydraulic valve, a master cylinder, a hydraulic pipe, and a pressure regulating valve.
최근에는 자동차 주행시 노면과 바퀴간에 제동시 마찰부분이 온도가 급격히 상승하므로 유기재료인 바퀴트레인드면과 노면간에 마찰계수가 저하되어 제동능력이 저하되는 페이드현상이 있다는 사실에 입각하여 바퀴의 급제동을 단속적으로 가능케한 소위 안티록 브레이크시스템(ABS)이 개발되어 점차 범용화하고 있는 것이다.Recently, since the temperature of the friction part increases rapidly when braking between the road surface and the wheel while driving a car, the braking ability of the wheel is intermittently braked based on the fact that the friction coefficient is reduced between the wheel-train surface and the road surface, which is an organic material. The so-called anti-lock brake system (ABS), made possible by this, has been developed and is becoming more and more popular.
ABS는 제동시 휠록(wheel-lock) 현상을 방지하는 것으로서 제동거리축, 방향안정성 확보, 조종성 확보에 그 주목적이 있다.ABS prevents wheel-lock during braking, and its main purpose is to secure braking distance axis, direction stability, and maneuverability.
ABS는 차륜의 속도를 감시하여 브레이크페달을 밟아 차륜속도가 저하되고 차륜가속도가 설정치를 초과하면 그 시점에서 압력감압을 개시하고, 감압에 의하여 차륜가속도가 증가하여 휠록으로 부터 회복경향이 있다고 판단되면 다시 압력중압을 개시하는 압력감압과 중압이 일정시간내에 빠른속도로 진행되게 하는 것이 주요작용기구이다.ABS monitors the speed of the wheel and presses the brake pedal to reduce the speed of the wheel. When the wheel speed exceeds the set value, the pressure starts to depress at that point. Again, the main action mechanism is to start the pressure reduction and the medium pressure to start at high speed within a certain time.
ABS 시스템에 사용되는 모듈레이터(1)의 개략구성도를 보여주는 제1도에 의거하여 보다 구체적으로 증·감압작용을 설명한다.The increase / decrease action will be described in more detail based on FIG. 1 showing a schematic configuration diagram of the modulator 1 used in the ABS system.
모듈레이터(1) 내에는 적어도 4개의 포트1(3), 포트2(4), 포트3(5), 포트4(6)가 있는 유량콘트롤밸브(2)가 내장되어져 스풀의 작동과 솔레노이드밸브(7)의 작동에 따라 유압 증·감하고 있다. 즉, 속도센서(8)의 신호에 의거 ECU(9)로부터 솔레노이드밸브(7) 개방신호가 오면 포트1(3)과 포트2(4)를 흐르던 유압이 포트3(5)과 포트4(6)을 통하여 레저브에 회귀함으로써 감압하는 것이며 솔레노이드밸브(7)가 폐쇄작동을 하면 다시 본래의 증압단계로 작동하는 것이다. 이 경우에 나타나듯이 도관2(11)와 도관3(12)에서 전달되는 유압이 도관1(10)을 통하여 마스터실린더(13)에 전달되므로 유압력이 페달에 전해져 운전자에게 좋지않은 감각을 주는 것이다. 즉, 단속적인 증 감압의 유압력이 페달에 전달되어 페달에 진동이 오고 급작스런 역압으로 인하여 실린더 내의 첵크밸브계통에도 충격이 전달되어 밸브계통의 수명을 급격하게 단축시켜 본래 ABS의 기능이 상실되어 버리는 결과를 초래하는 것이다. 더나아가서 마스터실린더(13)를 통하여 전달될 유압력이 도관1에 분배되어져 버리므로 유압력이 적어도 1/3 내지 1/2이상 감소되어 버리는 문제점이 있는 것이다.The modulator 1 has a flow control valve 2 with at least four ports 1 (3), ports 2 (4), ports 3 (5), and ports 4 (6), so that the operation of the spool and the solenoid valve ( Hydraulic pressure increases and decreases according to 7). That is, when the solenoid valve 7 opening signal comes from the ECU 9 based on the signal of the speed sensor 8, the hydraulic pressure flowing through the port 1 (3) and the port 2 (4) is changed to the port 3 (5) and the port 4 (6). It is to reduce the pressure by returning to the reservoir through the) and when the solenoid valve (7) is closed, the original pressure is increased again. As shown in this case, since the hydraulic pressure transmitted from the conduit 2 (11) and the conduit 3 (12) is transmitted to the master cylinder 13 through the conduit 1 (10), the hydraulic pressure is transmitted to the pedal to give the driver a bad feeling. . In other words, the hydraulic pressure of intermittent pressure-reducing pressure is transmitted to the pedal, vibration is generated on the pedal, and shock is transmitted to the check valve system in the cylinder due to sudden back pressure, and the life of the valve system is abruptly shortened and the original ABS function is lost. It results. Furthermore, since the hydraulic force to be transmitted through the master cylinder 13 is distributed to the conduit 1, the hydraulic force is reduced by at least 1/3 to 1/2 or more.
본 발명자는 이상의 단점을 개선하고자 브레이크실린더(1)에서 전달되는 역압을 적절히 차단함으로써 운전자에 대한 불쾌감을 없애고 각종 밸브류의 파손을 최대한 억제하는 효과적인 밸브장치를 고안하였는바, 구체적으로는 제2도 내지 제4도에 도시하고 있다.The present inventors have devised an effective valve device that eliminates the discomfort to the driver and suppresses the damage of various valves to the maximum by appropriately blocking the back pressure transmitted from the brake cylinder (1) to improve the above disadvantages, specifically, FIG. 4 to 4 are shown.
본 발명의 제1실시예는 유량콘트롤 밸브가 내장되어져 스풀과 밸브의 작동에 따라 휠 실린더로의 유압력을 중압 또는 감압하는 자동차 ABS 장치용 유아제어밸브에 있어서, 마스터실린더측의 제1포트(15)와 연계된 제1밸브실(16)의 파일럿통로(24)가 제1밸브실(16)의 일측에 형성되어 있으되 그 입구부(24a)가 첵크밸브(22)의 위치보다 약간 앞쪽에 형성되고 그 출구부(24b)는 스프링(20)에 의하여 지지된 피스톤(20a)설치위치보다 앞쪽에 설치되어 있어서 정상압작동시에는 항상 첵크밸브(22)가 개방되어 파일럿 통로(24)로 유압전달되 차단되도록 구성되어 있으며, 상기한 제1밸브실(16)의 유압을 받아 드레인 유로(23)로 유압을 배출토록 구성하되 첵크밸브(18)가 전자솔레노이드(18a)와 축연결되어져 있어 첵크밸브의 개방 및 폐쇄작동이 전자제어토록 구성되어 있는 첵크밸브실(19)이 연결통로(23a)를 매개로 상기한 제1밸브실(16)과 연통되어져 있으며, 상기한 제2밸브실(19)의 드레인유로(23)보다 앞족에 브레이크 실린더쪽으로 연계된 제2포트(17)의 입구부가 결합되어져 있는 것을 특징으로 하는 자동차 ABS 장치용 유압 제어밸브를 제공하는 것이다.In the first embodiment of the present invention, in the infant control valve for an automobile ABS device in which the flow control valve is built in and the hydraulic pressure to the wheel cylinder is reduced or reduced depending on the operation of the spool and the valve, the first port on the master cylinder side ( A pilot passage 24 of the first valve chamber 16 associated with 15 is formed at one side of the first valve chamber 16, but the inlet portion 24a is slightly ahead of the position of the check valve 22. The outlet portion 24b is formed in front of the piston 20a installation position supported by the spring 20 so that the check valve 22 is always opened to operate the hydraulic pressure through the pilot passage 24 during the normal pressure operation. It is configured to be blocked to be transmitted, and configured to discharge the hydraulic pressure to the drain flow path 23 by receiving the hydraulic pressure of the first valve chamber 16, but the check valve 18 is axially connected to the solenoid (18a) check valve Open and closed operation is configured to control electronically. The check valve chamber 19 is in communication with the first valve chamber 16 via the connecting passage 23a, and the brake valve chamber 19 is located in front of the drain passage 23 of the second valve chamber 19 toward the brake cylinder. It is to provide a hydraulic control valve for a vehicle ABS device, characterized in that the inlet portion of the second port 17 is coupled.
이상의 제어밸브장치는 도시되지 아니한 유압센서의 작동신호에 맞추어 전자솔레이노이드(18)가 작동하면 방출유로(23)를 차단하여 ABS에서 발생된 역압이 마스터실린더쪽으로 전달되지 아니하게 하는 것이다. 제1밸브실(16)의 첵크밸브(22)는 마스터실린더에서 과다한 압력이 전달되는 경우 파일럿통로(24)를 통하여 과다압력이 전달되어 스프링(20)에 의하여 지지된 스푸울(25)을 밀어내어 주입유로(21)를 차단시켜주므로 과도한 압력이 휠실린더쪽에 전달되는 현상을 방지하는 것이다. 즉, 주입유로(21)와 드레인유로(23)의 교호적인 개폐로 ABS의 역압을 효율적으로 차단하는 동시에 브레이크에 필요한 이상의 과도한 압력이 전달되는 것도 차단하는 것이다.The above control valve device is to block the discharge flow path 23 when the electromagnetic solenoid 18 is operated in accordance with the operation signal of the hydraulic sensor not shown so that the back pressure generated in the ABS is not transmitted to the master cylinder. When the excess pressure is transmitted from the master cylinder to the check valve 22 of the first valve chamber 16, the excess pressure is transmitted through the pilot passage 24 to push the sprue 25 supported by the spring 20. By blocking the injection flow path 21 to prevent the phenomenon that excessive pressure is transmitted to the wheel cylinder side. That is, by alternately opening and closing the injection flow passage 21 and the drain flow passage 23, the back pressure of the ABS is effectively blocked, and the excess pressure required for the brake is also blocked.
상기한 장치는 유압센서에 의한 압력신호를 받은 경우에만 전자솔레이노드(18a)가 작동한다는 제한이 있어 자칫 오동작이 될 경우 심각한 문제로 될 수 있다는 점에착안하여 또다른 발명을 하였다(특허출원 94-538호).The above device has another invention in view of the fact that the solenoid node 18a operates only when a pressure signal is received by the hydraulic sensor, which can be a serious problem if a malfunction occurs. -538).
마스터실린더쪽과 연결되는 제1포트(15)와 ABS쪽에 연결되는 제2포트(17)를 2개의 분리된 밸브실에 설치하며, 내부에 스푸울이 내장되는 기계식구조로서 구체적으로는 제3도에 제2실시예를 단면구조를 통하여 도시하고 있다. 유량콘트롤 밸브가 내장되어져 스풀과 밸브의 작동에 따라 휠 실린더로의 유압력을 증압 또는 감압하는 자동차 ABS 장치용 유압제어밸브에 있어서, 턱부(26a)에 안착고정되는 O링(30a)을 경계로 직경을 달리하는 제1슬리브실(26)과 제2슬리브실(27)이 구분형성되고 마스터실린더와 연통된 제1포트(15)와 제2슬리브실(27)에 연통되도록 구성한 제1밸브실(25)과 O링(37a)을 경계로 직경을 달리하는 제3슬리브실(33)과 제4슬리브실(34)이 구분형성되고 브레이크실린더와 연통된 제1포트(17)가 상기한 제4슬리브실(34)의 하단측에 연통설치되며, 상기한 제1밸브실(25)과 제2밸브실(32)의 사이가 드레인유로(31)만이 서로 연통되도록 일체화하였으며, 상기한 제1밸브실(25)의 내부공간에는 T자형 스푸울(29)의 O링(30a)을 관통하면서 스프링(30)에 의하여 항시 일정거리를 유지한채 상하의 제1슬리브실(26)과 제2슬리브실(27)에 걸쳐 제1스푸울(29)이 배치되어 있으되 상단 중앙이 관통되고 하츠의 양측면으로만 관통되게 구성한 오리피스(28)가 형성되어 있고 하단은 원형으로 구헝하여 드레인유로(31)를 개방 폐쇄가능토록 하였으며, 상기한 제2밸브실(32)의 내부공간에도 O링(37a)을 관통한채 스프링(37)에 의하여 항시 일정거리를 유지하도록 하여 상하의제3슬리브실(33)과 제4슬리브실(34)에 걸쳐 제2스푸울(36)이 설치되어 있으되 상단 중앙이 관통되고 하측의 양측면 만으로만 관통되게 오리피스(35)가 형성되어 있고 하선만을 첨예하게 구성되어져 있는 것을 특징으로 하는 자동차 ABS 장치용 유압제어밸브를 제공하고 있다.The first port 15 connected to the master cylinder side and the second port 17 connected to the ABS side are installed in two separate valve chambers. The second embodiment is shown in cross section. A hydraulic control valve for an automobile ABS device in which a flow control valve is built in to increase or decrease the hydraulic pressure to a wheel cylinder according to the operation of the spool and the valve, the boundary of the O-ring 30a fixed to the jaw portion 26a. The first valve chamber 26 and the second sleeve chamber 27 having different diameters are formed separately and communicate with the first port 15 and the second sleeve chamber 27 communicating with the master cylinder. The first port 17 in which the third sleeve chamber 33 and the fourth sleeve chamber 34 having different diameters at the boundary between the 25 and the O-rings 37a are formed and communicated with the brake cylinder is described above. It is installed in communication with the lower end side of the four sleeve chamber 34, the first valve chamber 25 and the second valve chamber 32 is integrated so that only the drain flow passage 31 is in communication with each other, the first Through the O-ring 30a of the T-shaped spun 29 in the inner space of the valve chamber 25, the spring 30 keeps a constant distance at all times. An orifice 28 is formed through the first sleeve 26 and the second sleeve 27, and the first spun 29 is arranged to penetrate the upper center and penetrate only to both sides of the heart. The lower end was rounded so that the drain passage 31 could be opened and closed, and a constant distance was maintained at all times by the spring 37 while passing through the O-ring 37a in the inner space of the second valve chamber 32. The second sprue 36 is provided over the upper and lower third sleeve chambers 33 and the fourth sleeve chambers 34, but the orifice 35 is formed so that the upper center penetrates and penetrates only the lower sides. And it provides a hydraulic control valve for a car ABS device characterized in that only the unloading is sharply configured.
이 경우에 제1스푸울(29)과 제2스푸울(36)의 상하 단면적 이 서로 다르게 구성하므로 압력차이로 인한 상하이송이 가능토록 하였다.In this case, since the upper and lower cross-sectional areas of the first spun 29 and the second spun 36 are different from each other, it is possible to send the shanghai due to the pressure difference.
또한 제4슬리브실(340의 하측에 좁게 구성한 유로(33a)의 하측으로 형성된 공간에 스프링(38)로 지지되어 제2스푸울(36)의 하단 첨예부와 맞닿게 볼(39)이 설치되어 역압 전달시 유로(33a)를 폐쇄가능토록 하였다.In addition, the ball 39 is installed in the space formed in the lower side of the flow path 33a narrowly formed in the lower side of the fourth sleeve chamber 340 to be in contact with the lower sharp part of the second spun 36. The flow path 33a was made to be closed at the time of back pressure transmission.
이상의 구조를 갖는 제어밸브장치의 작동관계를 설명한다. 마스터실린더로부터 과도한 압력이 가해지는 경우 드레인유로(31)를 통하여 빠져나가는 압력 이상의 여분의 압력은 오리피스(28)를 통하여 제1슬리브(26)에 의하여 형성된 공간내에 진입하여 스푸울(29)의 하방향쪽 이송력으로 작용하여 준다. 이 이송력이 스프링(30)의 탄력보다 큰 경우 스푸울(29)이 화살표 A와 같이 하강하여 드레인유로(31)를 점선도시하듯이 차단하여 브레이크 작용력 이상의 과도한 힘이 휠실린더쪽에 전달되는 현상을 차단하고 휠실린더에서의 ABS 작동(즉, 잠김·풀림의 반복작용)이 원활하게 진행되게 하는 것이다. ABS쪽에서 과도한 역압이 발생되어 제2포트(17)를 통하여 전달되는 경우, 전달되는 압력이 제3슬리브(33)에 전달되어 스푸울(36)을 화살표(B)와 같이 이동되게 함으로써 결국 지지스프링(38)의 복원력으로 유로(33a)를 차단하여 주므로 압력전달이 차단되도록 하여 주는 것이다.The operation relationship of the control valve apparatus which has the above structure is demonstrated. When excessive pressure is applied from the master cylinder, the excess pressure above the pressure exiting through the drain flow passage 31 enters the space formed by the first sleeve 26 through the orifice 28 to lower the sprue 29. It acts as a direction feed force. If this conveying force is greater than the elasticity of the spring 30, the sprue 29 descends as shown by arrow A, blocking the drain flow path 31 as shown by the dotted line, and the excessive force greater than the brake action force is transmitted to the wheel cylinder. This is to prevent the operation of ABS in the wheel cylinder (ie, repeated locking and unlocking). When excessive back pressure is generated on the ABS side and is transmitted through the second port 17, the transmitted pressure is transmitted to the third sleeve 33, thereby causing the sprue 36 to move as shown by the arrow B, thereby supporting the spring. Since the flow path 33a is blocked by the restoring force of 38, the pressure transmission is blocked.
이상 설명하듯이 압력의 전달과정을 유압센서와 솔레노이드밸브 같은 전자장비의 도움이 없이도 자체 발생된 유압력만으로 제어 가능하게 한 특징이 있어, 고장이나 작동불량이 위험이 사라지는 것이다.As described above, the pressure transmission process can be controlled only by the generated hydraulic force without the help of electronic equipment such as a hydraulic sensor and a solenoid valve, thereby eliminating the risk of malfunction or malfunction.
본 발명자는 상기한 기계식 제어밸브장치를 보다 콤팩트화하면서도 작동은 본래 기능에 하등의 영향을 주지아니하도록 단일 밸브실을 갖는 제어밸브장치를 고안하였는바, 구체적으로 제3실시예를 제4도에 그 단면구조를 통하여 도시하고 있다. 유량콘트롤 밸브가 내장되어져 스풀과 밸브의 작동에 따라 휠 실린더로의 유압력을 중압 또는 강압하는 자동차 ABS 장치용 유압제어밸브에 있어서, 밸브몸체(40)내부를 중간슬리브실(40)의 직경을 가장 작게하여 직겨잉 큰 상슬리브실(42)과 하슬리브실(43)을 구분형성하여, 상기한 상슬리브실(41)에는 반구형안착부(50)가 스푸울(45)의 상단과 마주보도록한 스토퍼(41)를 상면 중앙에 배치하고, 측면에는 마스터실린더와 연통된 제1포트(52)가 연결되어져 있으며, 상기한 하슬리브실(43)에는 스푸울(45)의 대경부(45c)의 하측이 스프링(44)에 의하여 지지되어 항시 일정 거리를 유지토록 탄지된채 내장되며 하단측 중아엔는 브레이크실린더와 연통된 제2포트(53)가 연결되고 시트부(49a)의 하측으로 스프링(48)으로 지지되는 볼(49)이 내장되어 있어 역유압 전달시에는 드레인유로(47)가 볼(49)의 후퇴로 시트부(49a)에 안착되어 폐쇄가능토록 구성하였으며, 상기한 스푸울(45)의 중앙에는 상단 중앙이 상슬리브실(42)에 관통토록하고 하측으로는 수푸울의 양측면으로 연결되어져 하슬리브실(43)에 관통되도록 오리피스(46)가 구성되여져 상하슬리브실간에 유입전달이 오리피스만을 통하여 가능토록 구성되어 있다. 또한, 스푸울(45)의 상하단 면적의 넓이가 다르게 구성하므로서 과다한 유압발생시 스프링(44)의 지지력을 이겨내고 스푸울이 승강하여 반구형 안착부(50)에 안착되어져 더 이상의 유압전달이 불가능토록 구성되는 것이다.The inventors of the present invention have devised a control valve device having a single valve chamber so that the mechanical control valve device can be more compact but the operation does not affect the original function at all. It is shown through the cross-sectional structure. In the hydraulic control valve for automobile ABS device, in which the flow control valve is built in, and the hydraulic pressure to the wheel cylinder is reduced or reduced depending on the operation of the spool and the valve, the diameter of the intermediate sleeve chamber 40 is set inside the valve body 40. The small upper and lower sleeve chambers 42 and the lower sleeve chamber 43 are formed to be the smallest, and the upper sleeve chamber 41 has a hemispherical seat 50 facing the upper end of the spun 45. A stopper 41 is disposed at the center of the upper surface, and a first port 52 communicating with the master cylinder is connected to the side surface, and the large diameter portion 45c of the sprue 45 is connected to the lower sleeve 43. The lower side of the support is supported by the spring 44 is always kept a constant distance to be built in, and the lower side of the middle is connected to the second port 53 in communication with the brake cylinder and the spring (under the seat portion 49a) The ball 49, which is supported by 48, is built in, so The rain path 47 was seated on the seat 49a by the retraction of the ball 49 and configured to be closed. The upper center of the sprue 45 was penetrated by the upper sleeve chamber 42. The orifice 46 is configured to be connected to both sides of the water wool so as to penetrate the lower sleeve chamber 43 so that the inflow and transmission between the upper and lower sleeve chambers is possible through only the orifice. In addition, since the area of the upper and lower end areas of the spun 45 is configured differently, in the event of excessive hydraulic pressure, the bearing force of the spring 44 is overcome, and the sprue is lifted and seated on the hemispherical seating part 50 so that no further hydraulic transmission is possible. will be.
본 발명에서 필요시에는 디를 슬리브실에 헬륨, 질소등의 불활성 기체를 고압으로 채워 넣어 주므로서 기압에 의한 탄성력 발휘도 가능토록 하였다.When necessary in the present invention, the die was filled with an inert gas such as helium and nitrogen at a high pressure in the sleeve chamber, thereby enabling the elastic force to be exerted by the air pressure.
이상의 구조를 갖는 제어밸브장치의 작동관계를 구체적으로 설명한다.The operation relationship of the control valve apparatus which has the above structure is demonstrated concretely.
첫째, 마스터실린더로부터 포트(52)에 브레이크작용력 이상의 유압력이 전달되는 경우 상슬리브실(42)에 진입된 압력은 오리피스(46)를 통하여 하슬리브실(43)에 전달되어 상슬리브실(42)에 있는 스푸울(45)의 선단부(45b) 면적이 하단부(45a)의 면적보다 적어 유압차이를 보이므로 스푸울(45)이 화살표 C와 같이 상승하여 드레인유로(47)가 체크밸브(49)에 의하여 차단되는 동시에 스토퍼(51)의 반구형안착부(50)에 선단부(45b)가 안착되어 오리피스(46)의 입구가 차단되도록 하는 것이다. 따라서 일정압력 이상은 자동차단시켜 브레이크가 너무 강하게 작동하여 패드의 마모나 발열현상이 최소화될 수 있게 하므로 브레이크 작동 효과가 최적화되는 특징이 있는 것이다.First, when a hydraulic pressure greater than the brake action force is transmitted from the master cylinder to the port 52, the pressure entered into the upper sleeve chamber 42 is transmitted to the lower sleeve chamber 43 through the orifice 46, and the upper sleeve chamber 42 Since the area of the distal end portion 45b of the sprue 45 in the) is smaller than the area of the lower end 45a to show the hydraulic pressure difference, the sprue 45 rises as shown by the arrow C, and the drain passage 47 moves up to the check valve 49. At the same time, the front end portion 45b is seated on the hemispherical seating portion 50 of the stopper 51 so that the entrance of the orifice 46 is blocked. Therefore, a certain pressure or more shuts off the brakes so strongly that the wear of the pads and heat generation can be minimized, so the brake operating effect is optimized.
둘째, ABS쪽과 연결된 드레인포트(53)로부터 역압이 전달되는 경우에도 역시 스푸울(45)이 상승하여 드레인유로(47)가 차단되면서 오리피스(46) 입구부가 차단되어지므로 역압의 마스터실린더 내로의 전달이 방지되어 운전자의 브레이크 페달이 전달되는 반발력이 전혀 없다는 효과가 있는 것이다.Second, even when the reverse pressure is transmitted from the drain port 53 connected to the ABS side, the sprue 45 also rises to block the drain flow passage 47 and the inlet portion of the orifice 46 is blocked. The transmission is prevented, so that there is no repulsion force transmitted by the driver's brake pedal.
이상 설명하듯이 본 발명의 제어밸브장치는 발생된 역압의 효과적인 차단으로 마스터실린더내의 피스톤컵에 주어지던 충격이 없어지므로 피스톤컵 마모 또는 변형이 방지된다는 장점이 있는 것은 물론 ABS 자동시 브레이크페달이 전달되어 오는 단속적인 반발력이 사라져 운전자에게 주는 불쾌감 등이 없어지는 특징도 있는 것이다. 더아가서 마스터실린더쪽으로 전달되는 엽압이 휘일실린더쪽으로 전량 소모없이 전달되므로 적은 유압력으로 효과적인 브레이크작동이 된다는 잇점도 있는 것이다.As described above, the control valve device of the present invention has the advantage that the piston cup wear or deformation is prevented by effectively blocking the generated back pressure, so that the piston cup wear or deformation is prevented. There is also a feature that eliminates the unpleasant feelings that give drivers the intermittent repulsive force that comes. In addition, since the leaf pressure transmitted to the master cylinder is transmitted to the wheel cylinder without any consumption, there is an advantage that the effective brake operation can be performed with less hydraulic force.
Claims (6)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940007408A KR960015697B1 (en) | 1993-10-08 | 1994-04-08 | Oil-pressure control valve for a.b.s. system of automobiles |
| AU78227/94A AU7822794A (en) | 1993-10-08 | 1994-10-07 | Valve assembly of hydraulic pressure control system for automobile abs system |
| EP94929034A EP0728090A1 (en) | 1993-10-08 | 1994-10-07 | Valve assembly of hydraulic pressure control system for automobile abs system |
| PCT/KR1994/000134 WO1995010437A1 (en) | 1993-10-08 | 1994-10-07 | Valve assembly of hydraulic pressure control system for automobile abs system |
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR930020773 | 1993-10-08 | ||
| KR93-20773 | 1993-10-08 | ||
| KR93-5538 | 1994-03-18 | ||
| KR19940005538 | 1994-03-19 | ||
| KR94-5538 | 1994-03-19 | ||
| KR1019940007408A KR960015697B1 (en) | 1993-10-08 | 1994-04-08 | Oil-pressure control valve for a.b.s. system of automobiles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR950011252A KR950011252A (en) | 1995-05-15 |
| KR960015697B1 true KR960015697B1 (en) | 1996-11-20 |
Family
ID=27349003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019940007408A KR960015697B1 (en) | 1993-10-08 | 1994-04-08 | Oil-pressure control valve for a.b.s. system of automobiles |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0728090A1 (en) |
| KR (1) | KR960015697B1 (en) |
| AU (1) | AU7822794A (en) |
| WO (1) | WO1995010437A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA936149A (en) * | 1970-02-28 | 1973-10-30 | Girling Limited | Control valves for hydraulic fluids |
| FR2311697A1 (en) * | 1975-05-23 | 1976-12-17 | Ferodo Sa | Braking system modulation unit - has port cross-section between chambers varying with pressure in one chamber |
| DE3240276A1 (en) * | 1982-10-30 | 1984-05-03 | Robert Bosch Gmbh, 7000 Stuttgart | Pressure-control valve for a brake system |
| FR2559726B1 (en) * | 1984-02-22 | 1987-07-31 | Fiat Auto Spa | ELECTROVALVE, IN PARTICULAR FOR THE CONTROL OF ANTI-SLIP DEVICES FOR MOTOR VEHICLES |
| JP3153229B2 (en) * | 1990-09-04 | 2001-04-03 | ボッシュブレーキシステム株式会社 | Modulator for anti-skid control device |
-
1994
- 1994-04-08 KR KR1019940007408A patent/KR960015697B1/en not_active IP Right Cessation
- 1994-10-07 EP EP94929034A patent/EP0728090A1/en not_active Withdrawn
- 1994-10-07 AU AU78227/94A patent/AU7822794A/en not_active Abandoned
- 1994-10-07 WO PCT/KR1994/000134 patent/WO1995010437A1/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0728090A1 (en) | 1996-08-28 |
| AU7822794A (en) | 1995-05-04 |
| WO1995010437A1 (en) | 1995-04-20 |
| KR950011252A (en) | 1995-05-15 |
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