KR20030093538A - Cooling device od shock absorber in vehicle - Google Patents
Cooling device od shock absorber in vehicle Download PDFInfo
- Publication number
- KR20030093538A KR20030093538A KR1020020031122A KR20020031122A KR20030093538A KR 20030093538 A KR20030093538 A KR 20030093538A KR 1020020031122 A KR1020020031122 A KR 1020020031122A KR 20020031122 A KR20020031122 A KR 20020031122A KR 20030093538 A KR20030093538 A KR 20030093538A
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- South Korea
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- air
- shock absorber
- vehicle
- cooling device
- leveling valve
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Classifications
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- 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
- B60G17/052—Pneumatic spring characteristics
- B60G17/0523—Regulating distributors or valves for pneumatic 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
- B60G17/052—Pneumatic spring characteristics
- B60G17/0523—Regulating distributors or valves for pneumatic springs
- B60G17/0525—Height adjusting or levelling valves
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- 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
- B60G2202/10—Type of spring
- B60G2202/15—Fluid spring
- B60G2202/152—Pneumatic spring
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
- B60G2600/72—Cooling or warming means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/42—Cooling arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
본 발명은 차량의 쇽업소버 냉각장치에 관한 것으로, 보다 상세하게는 에어스프링으로부터 대기로 배출되는 압축공기를 이용해 열을 냉각시킬 수 있도록 된 차량의 쇽업소버 냉각장치에 관한 것이다.The present invention relates to a shock absorber cooling device for a vehicle, and more particularly, to a shock absorber cooling device for a vehicle that is capable of cooling heat by using compressed air discharged from the air spring to the atmosphere.
일반적으로 버스나 트럭과 같은 대형 차량의 현가장치는 차체 내에 충분한 여유공간을 가지고 있으므로 별도의 압축공기 공급장치를 통해 내부 공기의 압력을 변화시킴으로 써 차량에 가해지는 부하에 관계없이 스프링의 변형을 항상 일정하게 유지할 수 있는 비 선형의 특성의 에어스프링을 사용하게 된다.In general, suspension of a large vehicle such as a bus or truck has a sufficient clearance in the vehicle body, so a separate compressed air supply device is used to change the pressure of the internal air to always maintain the deformation of the spring regardless of the load on the vehicle. It uses a non-linear air spring that can be kept constant.
이러한 에어스프링은 차체 하중의 변화에 의해 가변되는 전·후 차고에 따라 압축공기를 공급 혹은 방출함으로써 안정된 차고를 유지하도록 레벨링밸브가 사용되는데, 이 레벨링밸브(10)는 도 1에 도시된 바와 같이, 차륜(4)이 장착되는 차축(5)의 끝단에 체결된 지지프레임(3)의 양단과 차체(2) 측면 하단사이에 구비된 에어스프링(1)에 공기통로 라인으로 연결되면서 상기 지지프레임(3)의 중간에 연결되어 차체에 작용하는 하중에 따라 에어탱크(7)의 공기 통로를 개·폐하는 로드어셈블리(6)에 의해 조작되어지게 된다.The air spring is a leveling valve is used to maintain a stable garage by supplying or releasing compressed air in accordance with the front and rear garage, which is variable by the change in the body load, the leveling valve 10 is shown in FIG. The support frame is connected to the air spring 1 provided between both ends of the support frame 3 fastened to the end of the axle 5 on which the wheels 4 are mounted and the lower end of the side of the vehicle body 2 by the air passage line. It is connected by the middle of (3), and is operated by the load assembly 6 which opens and closes the air passage of the air tank 7 according to the load acting on a vehicle body.
즉, 도 2에 도시된 바와 같이 차체 하중이 적정치나 주행 중 도로로부터 충격이 가해지지 않게 되면 차체 하중에 따라 변동되는 회동되는 로드어셈블리(6)가 변하지 않아 이에 연결된 레벨링밸브(10)가 작동되지 않는 반면, 차량의 화물이 많이 적재되면 로드어셈블리(6)가 반 시계방향으로 회동해 레벨링밸브(10)의 공기통로를 열어 에어탱크(7)의 공기를 에어스프링(1)으로 공급해 차고를 높이게 되고 이어, 이와 같은 작용에 의해 에어스프링(1)은 서서히 늘어난 후 로드어셈블리(6)가 수평 위치로 다시 되돌아오면 공기통로를 차단해 에어탱크(7)의 공기 유입을 중단시키게 된다.That is, as shown in FIG. 2, when the vehicle load is not applied to the proper value or the road while driving, the rotating load assembly 6 which varies according to the vehicle load does not change and the leveling valve 10 connected thereto does not operate. On the other hand, if a lot of cargo of the vehicle is loaded, the load assembly 6 rotates counterclockwise to open the air passage of the leveling valve 10 to supply air from the air tank 7 to the air spring 1 to increase the garage. Subsequently, the air spring 1 gradually expands by this action, and then, when the rod assembly 6 returns to the horizontal position again, the air passage is interrupted to stop the inflow of the air tank 7.
한편, 차체에 하중이 감소하면 에어스프링(1)이 늘어나므로 상기 로드어셈블리(6)가 시계방향으로 회동되면서 레벨링밸브(10)의 공기통로(S)를 대기쪽으로 연결해 에어스프링(1)내의 공기를 대기로 배출한 후, 상기 에어스프링(1)내부의 압력이 낮아져서 로드어셈블리(6)가 수평위치로 되돌아올 때까지 에어스프링(1)내의 공기를 대기중으로 배출시키게 된다.On the other hand, when the load decreases on the vehicle body, the air spring 1 is extended, so that the rod assembly 6 is rotated clockwise, thereby connecting the air passage S of the leveling valve 10 to the atmosphere to provide air in the air spring 1. After the air is discharged to the atmosphere, the pressure in the air spring 1 is lowered to discharge the air in the air spring 1 to the atmosphere until the load assembly 6 returns to the horizontal position.
또한, 버스나 트럭과 같은 대형 차량의 현가장치에도 주행시 발생되는 범프(Bump)나 리바운드(Rebound)등으로부터 발생하는 충격에 의한 고유진동을 흡수하면서 진동을 빨리 감쇠시켜 승차감을 좋게 하기 위해 쇽업소버를 사용하게됨은 물론이다.In addition, shock absorbers are used to absorb the natural vibrations caused by bumps or rebounds generated during driving even in suspension of large vehicles such as buses and trucks, while damping vibrations quickly to improve ride comfort. Of course it will be used.
그러나, 이와 같이 차량의 주행중 지속적으로 외력을 받아 인장·압축되면서 진동을 흡수·감쇠시키는 쇽업소버는 이와 같은 잦은 스트로크(Stroke)변화에 따라 열이 발생되고 이에 따라, 쇽업소버의 실린더 내의 기밀을 유지하는 고무재질의 실링부재가 경화되면서 수명이 단축돼 심할 경우 내부 오일이 외부로 유출되어 사용할 수 없게 되는 단점이 있게 된다.However, the shock absorber that absorbs and attenuates vibration while being tensioned and compressed under continuous external force while the vehicle is running generates heat in response to such frequent stroke changes, thereby maintaining airtightness in the cylinder of the shock absorber. When the sealing member of the rubber material is hardened and the life is shortened, there is a disadvantage that the internal oil is leaked to the outside and can not be used.
이에 본 발명은 상기와 같은 점을 감안하여 발명된 것으로, 차고 하강시 레벨링밸브의 작동에 의해 대기로 배출되는 에어스프링의 압축공기를 쇽업소버로 유입시켜 쇽업소버에서 발생되는 열을 냉각시킬 수 있도록 함에 그 목적이 있다.Therefore, the present invention has been invented in view of the above, and the compressed air of the air spring discharged to the atmosphere by the operation of the leveling valve during the descent of the garage flows into the shock absorber to cool the heat generated in the shock absorber. The purpose is to.
상기와 같은 목적을 달성하기 위한 본 발명은, 차체에 작용하는 하중에 따라 조작되어 에어스프링과 에어탱크사이의 공기 통로를 개·폐하는 레벨링밸브에 대기로 개방된 공기통로에 쇽업소버로 이어지는 에어공급라인이 연결되어 에어스프링으로부터 배출되는 압축공기를 공급받도록 되는 것을 특징으로 한다.The present invention for achieving the above object, the air that is operated in accordance with the load acting on the vehicle body leading to the shock absorber in the air passage open to the atmosphere to the leveling valve for opening and closing the air passage between the air spring and the air tank The supply line is connected to receive compressed air discharged from the air spring.
도 1은 종래에 따른 대형 차량에서 레벨링 밸브를 중심으로 한 현가장치의 구성도1 is a configuration diagram of a suspension device centering on a leveling valve in a large vehicle according to the related art
도 2는 종래에 따른 레벨링밸브의 확대도Figure 2 is an enlarged view of a conventional leveling valve
도 3은 본 발명에 따른 레벨링밸브를 이용한 쇽업소버 냉각장치 구성도3 is a block diagram of a shock absorber cooling device using a leveling valve according to the present invention.
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
1 : 에어스프링2 : 차체1: Air spring 2: Body
3 : 지지프레임4 : 차륜3: support frame 4: wheel
5 : 차축6 : 로드어셈블리5 axle 6 rod assembly
7 : 에어탱크10 : 레벨링밸브7: air tank 10: leveling valve
20 : 에어공급라인20: air supply line
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 3은 본 발명에 따른 레벨링밸브를 이용한 쇽업소버 냉각장치 구성도를 도시한 것인바, 본 발명은 차륜(4)이 장착되는 지지프레임(3)과 차체측면 하단사이에 구비된 에어스프링(1)에 공기통로 라인으로 연결되면서 차체에 작용하는 하중에 따라 조작되는 로드어셈블리(6)를 매개로 공기 통로를 개·폐하는 레벨링밸브(10)의 대기로 개방된 공기통로에 쇽업소버(S)로 이어지는 에어공급라인(20)이 연결되어 에어스프링(1)으로부터 배출되는 압축공기를 공급받게 된다.Figure 3 shows the structure of the shock absorber cooling device using a leveling valve according to the present invention, the present invention is an air spring (1) provided between the support frame 3 and the lower side of the vehicle body is mounted wheel (4) Shock absorber (S) in the air passage opened to the atmosphere of the leveling valve (10), which opens and closes the air passage through the load assembly (6) which is connected to the air passage line and operated according to the load acting on the vehicle body. The air supply line 20 is connected to receive the compressed air discharged from the air spring (1).
여기서, 상기 쇽업소버(S)는 오일이 충진된 인너실린더를 내부로 수용하면서 기밀을 유지하는 아우터실린더의 소정 부위에 형성된 홀을 통해 에어공급라인(20)과 연결되는 한편, 상기 에어공급라인(20)으로 유입된 압축 공기가 실린더내에서 순환된 후 대기로 배출될 수 있도록 소정부위에 개구홀이 형성됨은 물론이다.Here, the shock absorber (S) is connected to the air supply line (20) through a hole formed in a predetermined portion of the outer cylinder to maintain the airtight while receiving the inner cylinder filled with oil inside, the air supply line ( An opening hole is formed in a predetermined portion so that the compressed air introduced into 20 may be circulated in the cylinder and then discharged into the atmosphere.
이하 본 발명의 작용을 첨부된 도면을 참조로 상세히 설명한다.Hereinafter, the operation of the present invention will be described in detail with reference to the accompanying drawings.
본 발명은 전술한 종래의 경우와 같이 차체 하중이 적정치나 주행 중 도로로부터 충격이 가해지지 않게 되면 차체 하중에 따라 변동되는 회동되는 로드어셈블리(6)가 변하지 않아 이에 연결된 레벨링밸브(10)가 작동되지 않는 반면, 차량에 화물이 많이 적재되어 로드어셈블리(6)가 반 시계방향으로 회동하게 되면 레벨링밸브(10)의 공기통로를 열어 에어탱크(7)의 공기를 에어스프링(1)으로 공급해 차고를 높이게 되고 이어, 이와 같은 작용에 의해 에어스프링(1)은 서서히 늘어난 후 로드어셈블리(6)가 수평 위치로 다시 되돌아오면 공기통로를 차단해 에어탱크(7)의 공기 유입을 중단시키게 된다.According to the present invention, when the vehicle body load is not applied to the proper value or the road while driving, the rotating load assembly 6 which varies according to the vehicle body load does not change and the leveling valve 10 connected thereto operates. On the other hand, when a lot of cargo is loaded on the vehicle and the load assembly 6 rotates counterclockwise, the air passage of the leveling valve 10 is opened to supply air from the air tank 7 to the air spring 1 and to the garage. Then, the air spring 1 is gradually increased by the above-described action, and then the load assembly 6 returns to the horizontal position to block the air passage to stop the air inflow of the air tank 7.
그러나, 본 발명은 차체에 가해지는 하중이 감소하는 경우 로드어셈블리(6)가 시계방향으로 회동되면서 레벨링밸브(10)의 공기통로(S)를 대기쪽으로 연결해 에어스프링(1)내의 공기를 대기로 배출하면서 차고를 낮추게 되는데 이때, 상기 에어스프링(1)으로부터 레벨링밸브(10)를 통해 배출되는 압축공기는 상기 레벨링밸브(10)의 대기 쪽 통로인 포트에 연결된 에어공급라인(20)을 통해 쇽업서버(S)로 공급되어진다.However, according to the present invention, when the load applied to the vehicle body decreases, the rod assembly 6 is rotated clockwise to connect the air passage S of the leveling valve 10 to the atmosphere to bring air in the air spring 1 into the atmosphere. The garage is lowered while being discharged. At this time, the compressed air discharged from the air spring 1 through the leveling valve 10 is rolled up through the air supply line 20 connected to the port, which is an air passage of the leveling valve 10. It is supplied to the server (S).
이때, 상기 쇽업서버(S)로 공급된 에어스프링(1)내의 압축공기는 오일이 충진된 인너실린더를 내부로 수용하면서 기밀을 유지하는 아우터실린더의 소정 부위에 형성된 홀을 통해 유입되어 그 실린더 내부를 순환하게 되고 이에 따라, 차량의 주행중 지속적으로 가해지는 외력에 의해 인장·압축되면서 잦은 스트로크(Stroke)변화로 인해 쇽업소버(S)에서 발생되는 열을 식혀 주게 된다.At this time, the compressed air in the air spring (1) supplied to the shock-up server (S) is introduced through a hole formed in a predetermined portion of the outer cylinder to maintain the airtight while receiving the inner cylinder filled with oil inside the cylinder As a result, the heat generated by the shock absorber (S) is cooled due to frequent stroke changes while being tensioned and compressed by an external force continuously applied while the vehicle is running.
이때, 상기 에어공급라인(20)을 통해 유입된 압축공기는 아우터실린더의 소정부위에 형성된 개구홀을 통해 대기로 배출되어짐은 물론이다.At this time, the compressed air introduced through the air supply line 20 is discharged to the atmosphere through the opening hole formed in a predetermined portion of the outer cylinder.
이상 설명한 바와 같이 본 발명에 의하면, 차체에 작용하는 하중에 따라 차고를 조절하는 에어스프링으로부터 배출되는 압축공기가 쇽업소버로 공급되도록 레벨링밸브와 쇽업소버사이를 에어공급라인으로 연결시켜 쇽업소버의 실린더 내부를 순환하면서 잦은 스트로크변화로 인해 쇽발생되는 열을 식혀 주게 되므로 이에 따라, 온도 상승이 방지되므로 쇽업소버의 실린더 내의 기밀을 유지하는 고무재질의 경화를 방지해 수명의 단축이나 피손에 의한 내부 오일의 외부 유출 현상을 크게 저감시킬 수 있는 효과가 있게 된다.As described above, according to the present invention, the cylinder of the shock absorber is connected between the leveling valve and the shock absorber by an air supply line so that the compressed air discharged from the air spring for adjusting the height according to the load applied to the vehicle body is supplied to the shock absorber. As it circulates inside, it cools down the heat generated by frequent stroke changes. Therefore, temperature rise is prevented. Therefore, it prevents hardening of rubber material that maintains air tightness in the cylinder of shock absorber. It is effective to greatly reduce the external leakage phenomenon of the.
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KR10-2002-0031122A KR100482078B1 (en) | 2002-06-03 | 2002-06-03 | Cooling device od shock absorber in vehicle |
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KR10-2002-0031122A KR100482078B1 (en) | 2002-06-03 | 2002-06-03 | Cooling device od shock absorber in vehicle |
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WO2009152745A1 (en) * | 2008-06-16 | 2009-12-23 | 奇瑞汽车股份有限公司 | A cooling device for vehicle shock absorber |
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KR950003413U (en) * | 1993-07-26 | 1995-02-16 | Shock absorber chiller of automobile | |
KR19980016772U (en) * | 1996-09-19 | 1998-06-25 | 박병재 | SHOCK ABSORBER COOLING SYSTEM |
JP2000088029A (en) * | 1998-09-11 | 2000-03-28 | Toyo Tire & Rubber Co Ltd | Vibration isolating device |
JP2000356236A (en) * | 1999-06-14 | 2000-12-26 | Ryokichi Tsuchiya | Cooling device for reciprocating piston type damper |
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WO2009152745A1 (en) * | 2008-06-16 | 2009-12-23 | 奇瑞汽车股份有限公司 | A cooling device for vehicle shock absorber |
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