KR100266306B1 - Vehicle height control system - Google Patents

Vehicle height control system Download PDF

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Publication number
KR100266306B1
KR100266306B1 KR1019950051117A KR19950051117A KR100266306B1 KR 100266306 B1 KR100266306 B1 KR 100266306B1 KR 1019950051117 A KR1019950051117 A KR 1019950051117A KR 19950051117 A KR19950051117 A KR 19950051117A KR 100266306 B1 KR100266306 B1 KR 100266306B1
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KR
South Korea
Prior art keywords
vehicle
air
air spring
load
supply
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KR1019950051117A
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Korean (ko)
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KR970034214A (en
Inventor
신동우
Original Assignee
정몽규
현대자동차주식회사
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Priority to KR1019950051117A priority Critical patent/KR100266306B1/en
Publication of KR970034214A publication Critical patent/KR970034214A/en
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Publication of KR100266306B1 publication Critical patent/KR100266306B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/32—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds
    • B60G11/34—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds including leaf springs
    • B60G11/46—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds including leaf springs and also fluid springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
    • B60G17/056—Regulating distributors or valves for hydropneumatic systems
    • B60G17/0565—Height adjusting valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/40—Type of actuator
    • B60G2202/41—Fluid actuator
    • B60G2202/412—Pneumatic actuator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/20—Spring action or springs
    • B60G2500/202—Height or leveling valve for air-springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/30—Height or ground clearance
    • B60G2500/302—Height or ground clearance using distributor valves

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

PURPOSE: An adjusting device for the height of a large size vehicle is provided to control the supply and the discharge of compressed air to an air spring depending on the change of a vehicle load. CONSTITUTION: A height adjusting device for a large size vehicle comprises an air spring(6) installed between a leaf spring(3) and a main frame(1); a supply pipe(6A) connecting an air tank(14) and the air spring; a supply solenoid valve(7A) controlling the supply of compressed air to the air spring on the supply pipe; a discharge solenoid valve(7B) controlling the discharge of compressed air to the air spring on a branched discharge pipe(6B); an ECU(electronic control unit)(8) selectively controlling two solenoid valves to adjust the height of the vehicle; an operating lever(10) vertically rotated by a vehicle load; an upper switch(9A) informing the ECU that the vehicle height is lowered with a heavy load; a lower switch(9B) informing the ECU that the vehicle height is increased with a small load. The air spring is shrunk depending on which switch and the vehicle height is automatically adjusted. Thus, the vehicle height is always kept regular by supplying or discharging compressed air depending on the state of the vehicle load.

Description

대형 차량의 차고 조정장치Garage Controls for Heavy Vehicles

제1도는 본 발명에 따른 일실시예 구조도.1 is a structural diagram of an embodiment according to the present invention.

제2도는 제1도의 측면 구조도.2 is a side structural view of FIG.

제3도는 종래의 판스프링식 서스펜션 구조도.3 is a conventional leaf spring suspension structure.

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

1 : 메인 프레임 2 : 액슬 하우징1: main frame 2: axle housing

3 : 리프 스프링 6 : 에어 스프링3: leaf spring 6: air spring

7 : 공급 솔레노이드 밸브 8 : 배출 솔레이드 밸브7: supply solenoid valve 8: discharge solenoid valve

9 : 스위치 10 : 작동 레버9: switch 10: operating lever

본 발명은 승객 또는 적재 하중의 증감에 따라 차체가 자동으로 높이가 조정되면서 항상 일정한 고도를 유지시키도록 하는 대형 차량의 차고 조정장치에 대한 것이다.The present invention relates to a vehicle height adjustment apparatus for a large vehicle that maintains a constant altitude at all times while the vehicle body automatically adjusts the height according to the increase or decrease of the passenger or load load.

일반적으로 대형 차량의 서스펜션은 크게 판스프링식과 에어 스프링식으로 구분이 되는바 현재 가장 많이 사용되고 있는 상기 판스프링식은 도면 제 3 도에서 보는바와 같이 메인 프레임(1, Main Frame)과 엑슬 하우징(2)간으로 리프 스프링(3, Leaf Spring)과 쇽 업소버(4, Shock Absorber)가 장착되도록 하여 노면으로부터의 진동이나 충격을 감쇄시키도록 하고 있다.In general, the suspension of a large vehicle is largely divided into a leaf spring type and an air spring type. The leaf spring type which is used most at present is the main frame 1 and the axle housing 2 as shown in FIG. Leaf springs (3) and shock absorbers (4, Shock Absorbers) are installed to reduce vibrations and shocks from the road surface.

또한 에어 스프링식은 엑슬 하우징에 고정되게 형성시킨 서포트 바에 메인 프레임과 고정착설되도록 한 에어 스프링을 장착하고, 상기 에어 스프링은 별도의 레벨링 밸브에 의해서 압축 공기를 유출입시키도록 하여 판스프링식에서와 같은 작용을 하게된다.In addition, the air spring type is equipped with an air spring that is fixed to the main frame to the support bar formed to be fixed to the axle housing, the air spring is to flow the compressed air by a separate leveling valve to act as the leaf spring type Will be done.

특히 상기와 같은 작용을 하는 서스펜션은 자체나 화물의 손상을 방지하게 될 뿐만 아니라 승차감을 향상시키게 된다.In particular, the suspension acting as described above not only prevents damage to itself or cargo, but also improves riding comfort.

하지만 상기와 같은 서스펜션 구조는 판스프링식의 경우 차체중량의 증감에 다라 차체가 높아지거나 낮아지게 되어 주행 안정성이 좋지 못하는 문제점이 있고, 에어 스프링식의 경우에는 차고 조절을 위해 고가장비인 레벨링 밸브를 장착시켜야 하는 단점이 있다.However, the suspension structure as described above has a problem in that the vehicle body becomes high or low depending on the increase or decrease of the body weight in the case of the leaf spring type, so that the driving stability is not good. There is a disadvantage to be fitted.

이에 본 발명은 상기한 문제점을 감안하여 이를 시정 보완하기 위한 것으로서, 본 발명은 차량 하중 변동에 따라 전기적인 신호에 의해 에어 스프링으로의 압축 공기 공급과 배출이 제어되도록 하여 대단히 저렴한 차고 조정장치를 제공코자 하는데 목적이 있다.Accordingly, the present invention is to compensate for the correction in view of the above problems, the present invention is to control the supply and discharge of compressed air to the air spring by the electrical signal according to the vehicle load fluctuation to provide a very low-cost garage adjustment device. There is purpose to do it.

상기한 목적을 달성하기 위해 본 발명은 리프 스프링의 중간부로 상기 리프 스프링과 메인 프레임간으로 장착되는 에어스프링과, 상기 에어 스프링으로의 압축 공기 공급과 배출을 단속토록 하는 솔레노이드 밸브와, 상기 솔레노이드 밸브들을 제어하는 전자 제어 장치와, 상기 전자 제어 장치로 차고의 상승과 하강을 알려주는 상하부 스위치와, 상기 스위치들을 차고에 따라 작동시키도록 하는 작동 레버로서 형성되도록 하는 것이 특징이다.In order to achieve the above object, the present invention provides an air spring mounted between the leaf spring and the main frame as an intermediate portion of the leaf spring, a solenoid valve for intermittently supplying and discharging compressed air to the air spring, and the solenoid valve. It is characterized in that it is formed as an electronic control device for controlling them, an upper and lower switch for notifying the height and the lower of the garage to the electronic control device, and an operating lever for operating the switches in accordance with the garage.

이에 첨부한 실시예 도면을 참조하여 본 발명을 보다 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

도면 제1도는 본 발명에 따른 실시예 구조를 도시한 것이다.1 shows an embodiment structure according to the present invention.

도면 부호 3은 리프 스프링이며, 상기 리프 스프링(3)은 복수개의 판스프링을 겹쳐지게 하여 U볼트와 클립으로 고정되도록 하면서 양단부는 메인 프레임(1)에 새클(5, Shackle)에 의해 핀고정되도록 한 구조이다.Reference numeral 3 denotes a leaf spring, and the leaf spring 3 overlaps a plurality of leaf springs so as to be fixed by a U bolt and a clip, while both ends thereof are pinned to the main frame 1 by means of a shackle 5. It is a structure.

상기 리프 스프링(3)은 엑슬 하우징(2)과 결합되어 노면으로부터 전달되는 진동과 충격을 완화시켜 이를 감쇄되도록 한다.The leaf spring 3 is coupled to the axle housing 2 to mitigate the vibration and shock transmitted from the road surface to attenuate it.

그리고 상기와 같은 리프 스프링(3)의 중간으로 상기 리프 스프링(3)과 메인 프레임(1)간으로 고정 장착되는 에어 스프링은 상하로 신축될 수 있는 구조로 형성되어 내압의 증감에 따라 차체의 높이가 조절되게 된다.And the air spring fixedly mounted between the leaf spring 3 and the main frame (1) in the middle of the leaf spring (3) as described above is formed of a structure that can be stretched up and down is the height of the vehicle body according to the increase and decrease of internal pressure Will be adjusted.

또한 상기 에어 스프링(6)은 컴프레서(13)에 의해 생성된 압축공기가 에어 탱크(14)에 저장되어 있다가 에어 탱크(14)와 에어 스프링(6)을 연결하는 공급관로(6A)를 통해 공급되는 것이며, 압축공기의 배출은 공급관로(6A)로부터 분기된 배기관(6B)을 통해 이루어지며, 이러한 압축 공기 공급과 배출은 솔레노이드 밸브(7)에 의해서 단속된다.In addition, the air spring (6) is stored in the air tank 14, the compressed air generated by the compressor (13) through the supply line (6A) connecting the air tank 14 and the air spring (6) The compressed air is discharged through the exhaust pipe 6B branched from the supply line 6A, and this compressed air supply and discharge are interrupted by the solenoid valve 7.

상기 솔레노이드 밸브(7)은 공급 솔레노이드밸브(7A)와 배출 솔레노이드밸브 (7B)로 구성되는데, 상기 공급 솔레노이드밸브(7A)SMS 공급관로(6A)상에 설치되어 에어 스프링(6)으로의 압축공이 공급을 단속하고, 배출 솔레노이드밸브(7B)는 배기관(6B)상에 설치되어 에어 스프링(6)르로부터의 압축공기 배출을 단속한다.The solenoid valve 7 is composed of a supply solenoid valve 7A and a discharge solenoid valve 7B. The solenoid valve 7 is installed on the supply solenoid valve 7A and the SMS supply line 6A, and the compressed air to the air spring 6 The supply is interrupted, and the discharge solenoid valve 7B is provided on the exhaust pipe 6B to interrupt discharge of compressed air from the air spring 6.

상기의 솔레노이드 밸브들(7A)(7B)은 전자 제어 장치(8)에 의해서 제어된다.The solenoid valves 7A and 7B are controlled by the electronic control device 8.

또한 상기 전자 제어 장치(8)는 차량에 시동이 걸리는 순간부터 이그니션 스위치(12)로부터 배터리(11)의 전원이 공급되어 작동하게 되는바 액슬측 차체와 연결된 공정 구조물에 장착되는 상하 스위치들(9A)(9B)로부터 공급되는 신호에 의해 상기 솔레노이드 밸브들(7A)(7B)을 제어하게 된다.In addition, the electronic control device 8 is powered by the ignition switch 12 from the moment when the vehicle is started, and the battery 11 is operated. The upper and lower switches 9A mounted on the process structure connected to the axle-side vehicle body are operated. The solenoid valves 7A and 7B are controlled by a signal supplied from the 9B.

특히 상기 상하부 스위치(9A)(9B)들은 차체측으로 회동 가능하게 축설시킨 작동 레버(10)에 의해서 작동하게 되며, 상기 작동 레버(10)의 단부에는 직하부의 엑슬 하우징(2)과를 스프링(10A)으로 연결되도록 한 구성이다.In particular, the upper and lower switches 9A and 9B are operated by an operation lever 10 arranged to be rotatable to the vehicle body side, and an axle housing 2 and a lower part of the operation lever 10 are springs on the end of the operation lever 10. 10A).

이하 본 발명의 작용 및 효과에 대해서 살펴보기로 한다.Hereinafter, the operation and effects of the present invention will be described.

상기한 구성에서 설명한 바와같이 본 발명은 리프 스프링(3)으로 형성되는 서스펜션 구조에 에어 스프링(6)을 장착하고, 상기 에어 스프링(6)을 작동 레버 (10)와 상하부 스위치(9A)(9B)들의 작동에 의해 신축시키므로서 차고가 자동으로 조정될 수 있도록 하는 것이다.As described in the above configuration, the present invention mounts the air spring 6 in the suspension structure formed of the leaf spring 3, and the air spring 6 is operated by the lever 10 and the upper and lower switches 9A and 9B. The car's height can be adjusted automatically as it expands and contracts.

즉 상기 상하부 스위치(9A)(9B)들은 도면 제2도에서와 같이 차체측에 착설된 작동 레버(10)가 차고의 증감에 따라 축회동하면서 선택적으로 돌출 노브를 압입시키게 되면서 작동하게 되는 것인바 이때 하중 증대에 따라 차체가 하강되면 상기 작동 레버(10)는 축회전하면서 상향 회전하여 상부 스위치(9A)를 작동시키게 되고, 반대로 하중이 감소하면서 차체가 상승하게 되면 상기 작동 레버(10)는 축회전하면서 하향 회전하여 하부 스위치(9B)를 작동시키게 되므로 차고 상태를 그 즉시로 전자 제어 장치(8)에 알려줄 수가 있게 된다That is, the upper and lower switches 9A and 9B operate as the operation lever 10 installed on the vehicle body side pivotally rotates according to the increase and decrease of the garage as shown in FIG. At this time, when the vehicle body is lowered as the load increases, the operation lever 10 rotates upward while axially rotating to operate the upper switch 9A. On the contrary, when the vehicle body rises while the load decreases, the operation lever 10 shaft The lower switch 9B is operated by rotating downward while rotating so that the electronic control device 8 can be immediately informed of the garage state.

이러한 신호가 전자 제어 장치(8)에 전달되면 상부 스위치(9A)의 작동시에는 배출 솔레노이드 밸브(7B)를 개방시켜 에어 스프링(6)내 압축 공기를 일정량 배출시켜 상기 에어 스프링(6)이 수축되면서 차고가 높아지려다 일정한 높이로 유지가 되며, 반대로 하부 스위치(9B)가 작동하게 되면 상기 전자 제어 장치(8)는 공급 솔레노이드 밸브(7)를 개방시켜 에어 탱크(14)로부터의 압축공기를 에어 스프링(6)으로 일정량 공급시켜 차체가 하강되려던 것을 다시 일정한 높이로 유지시키게 되는 것이다.When such a signal is transmitted to the electronic control device 8, during operation of the upper switch 9A, the discharge solenoid valve 7B is opened to discharge a predetermined amount of compressed air in the air spring 6, so that the air spring 6 contracts. As the garage height is increased and maintained at a constant height, on the contrary, when the lower switch 9B is operated, the electronic control device 8 opens the supply solenoid valve 7 to air the compressed air from the air tank 14. By supplying a certain amount to the spring (6) is to maintain a constant height again that the body is to be lowered.

이에 따라 차량에 시동이 걸린 상태에서는 언제든지 차량 하중 증감에 따라 압축 공기의 공급 및 배츨을 제어시켜 항상 일정한 차고가 유지될 수 있도록 하게 된다.Accordingly, when the vehicle is started, the supply and discharge of compressed air are controlled at all times according to the increase or decrease of the vehicle load so that a constant garage can be maintained at all times.

이상과 같은 본 발명에 따라 특히 승객 및 적재물 하중에 의해 대단히 중량 변화가 심한 대형 차량에서 차체의 높이를 항상 일정하게 유지시킬 수가 있게 되므로 노면이 고르지 못한 도로에서의 주행성 및 승차감을 향상시키게 될 뿐만 아니라 안전한 운행을 제공하게 되는 매우 유용한 효과를 제공하게 되는 것이다.According to the present invention as described above, it is possible to always maintain the height of the vehicle body constantly in a large vehicle with a great change in weight due to passenger and load loads, thereby improving driving and riding comfort on uneven roads. It will provide a very useful effect of providing safe driving.

Claims (1)

리프 스프링의 중간부로 상기 리프 스프링과 메인 프레임간으로 장착되는 에어 스프링과, 에어 탱크와 에어스프링을 연결하는 공급관로와, 공급관로상에 설치되어 에어스프링으로의 압축공기 공급을 단속하는 공급 솔레노이드밸브와, 상기 공급관로로부터 분기된 배기관에 설치되어 에어스프링으로부터 압축공기의 배출을 단속하는 배출 솔레노이드밸브와, 차량의 차고가 조절되도록 상기 공급 솔레노이드밸브와 배출 소레노이드밸브를 선택적으로 제어하는 전자 제어 장치와, 차체 프레임의 일측에 회동 가능하게 형성되고, 그 선단부는 탄성 체에 의해 엑슬 하우징과 연결되어 차량의 적재하중에 따라 상하로 회동하는 작동레버와, 차량의 적재하중이 커져 작동레버가 상향 회전함에 따라 접속 될 때 차고가 낮아졌음을 전자 제어장치에 알려주는 상부 스위치와, 차량의 적재하중이 작아져 작동레버가 하향 회전함에 따라 접속될 때 차고가 높아졌음을 전자 제어장치에 알려주는 하부 스위치, 로 구성된 것을 특징으로 하는 대형 차량의 차고 조정장치.An air spring mounted between the leaf spring and the main frame as an intermediate part of the leaf spring, a supply line connecting the air tank and the air spring, and a supply solenoid valve installed on the supply line to intermittently supply compressed air to the air spring. And an exhaust solenoid valve installed in an exhaust pipe branched from the supply line to control the discharge of the compressed air from the air spring, and an electronic control device for selectively controlling the supply solenoid valve and the discharge solenoid valve so that the vehicle height is adjusted. And, it is formed to be rotatable on one side of the body frame, the front end is connected to the axle housing by the elastic body, the operating lever rotates up and down in accordance with the loading load of the vehicle, and the operation load is rotated upward as the loading load of the vehicle increases To inform the electronics that the garage has been lowered And a switch unit, a lower switch, garage adjusting apparatus of a large vehicle, characterized in that the electronic control is configured to indicate that the high jyeoteum garage device when connected as the load becomes a less load operating lever the downward rotation of the vehicle.
KR1019950051117A 1995-12-16 1995-12-16 Vehicle height control system KR100266306B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102199767B1 (en) * 2019-12-02 2021-01-07 대호 (주) Level sensing apparatus for tractor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100337306B1 (en) * 2000-07-05 2002-05-17 이계안 Radius rod system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6252506U (en) * 1985-09-24 1987-04-01

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6252506U (en) * 1985-09-24 1987-04-01

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102199767B1 (en) * 2019-12-02 2021-01-07 대호 (주) Level sensing apparatus for tractor

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