KR100482108B1 - Shock absorber having hybrid variable damping force - Google Patents
Shock absorber having hybrid variable damping force Download PDFInfo
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- KR100482108B1 KR100482108B1 KR10-2002-0054675A KR20020054675A KR100482108B1 KR 100482108 B1 KR100482108 B1 KR 100482108B1 KR 20020054675 A KR20020054675 A KR 20020054675A KR 100482108 B1 KR100482108 B1 KR 100482108B1
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- shock absorber
- piston
- damping force
- piston rod
- chamber
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Classifications
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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
- F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
- F16F9/512—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity
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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
- B60G17/06—Characteristics of dampers, e.g. mechanical dampers
- B60G17/08—Characteristics of fluid dampers
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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
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/12—Devices with one or more rotary vanes turning in the fluid any throttling effect being immaterial, i.e. damping by viscous shear effect only
- F16F9/125—Devices with one or more rotary vanes turning in the fluid any throttling effect being immaterial, i.e. damping by viscous shear effect only characterised by adjustment 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
- F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
- F16F9/512—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity
- F16F9/5126—Piston, or piston-like valve elements
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Vehicle Body Suspensions (AREA)
- Fluid-Damping Devices (AREA)
Abstract
본 발명은 자동차 현가장치에 사용되는 쇽업소오버가 차량 주행중 발생하는 정숙하거나 거친 다양한 노면에 따른 형태의 외란에 대해 가변적인 적절하게 조절된 감쇠력을 제공하며, 특정 주파수에 대하여 그 감쇠계수를 조절 가능하게 됨으로서 승차감을 향상시키기 위하여;The present invention provides an appropriately controlled damping force that is variable to disturbances in the form of various quiet or rough road surfaces generated during vehicle driving due to shock absorbers used in automobile suspensions, and the damping coefficient can be adjusted for a specific frequency. To improve ride comfort;
쇽업소오버 외통, 피스톤로드를 통한 외력에 의해 작동유체의 유동 방향을 변환시켜가면서 승강하여 감쇄력을 발생시키는 피스톤을 구비한 쇽업소오버에 있어서,In the shock absorber provided with a piston that generates a damping force by lifting and changing the flow direction of the working fluid by an external force through the shock absorber outer cylinder and the piston rod,
상기 피스톤은 쇽업소오버의 내주면을 미끄러지게 일정 외경과 길이로 조립된 내파이프와, The piston is an inner pipe assembled to a certain outer diameter and length to slide the inner peripheral surface of the shock absorber,
상기 내파이프의 하부에 조립되면서 외측 저면에 구비된 탄성판에 의해 쇽업소오버 하부쳄버와 연통 개구되는 통공을 복수개 형성하여 피스톤로드의 하단에 체결되는 밸브판과,A valve plate which is assembled to a lower portion of the inner pipe and forms a plurality of through holes communicating with the shock absorber lower chamber by an elastic plate provided on an outer bottom thereof and fastened to the lower end of the piston rod;
상기 밸브판상에 일정 공간을 갖는 피스톤쳄버를 형성하게 피스톤로드의 외주면과 내파이프의 내주면을 연결 부착 형성되는 댐퍼고무와,A damper rubber formed by connecting and connecting the outer circumferential surface of the piston rod and the inner circumferential surface of the inner pipe to form a piston chamber having a predetermined space on the valve plate;
상기 댐퍼고무가 부착되는 피스톤로드에 쇽업소오버 상부쳄버와 피스톤쳄버를 연통시키는 유로에 급격한 오일의 유동을 저지하게 설치한 오리피스를 포함한 구성으로 이루어지는 하이브리드 가변 감쇠력을 가지는 쇽업소오버를 제공하는데 있다.It is to provide a shock absorber having a hybrid variable damping force consisting of a configuration including an orifice installed to prevent the rapid flow of oil in the flow path for communicating the shock absorber upper chamber and the piston chamber to the piston rod to which the damper rubber is attached.
Description
본 발명은 하이브리드 가변 감쇠력을 가지는 쇽업소오버에 관한 것으로, 더욱 상세하게는 자동차 현가장치에 사용되는 쇽업소오버가 차량 주행중 발생하는 정숙하거나 거친 다양한 노면에 따른 형태의 외란에 대해 가변적인 적절하게 조절된 감쇠력을 제공하며, 특정 주파수에 대하여 그 감쇠계수를 조절 가능하게 됨으로서 승차감을 향상시키기 위한 하이브리드 가변 감쇠력을 가지는 쇽업소오버에 관한 것이다.The present invention relates to a shock absorber having a hybrid variable damping force, and more particularly, the shock absorber used in an automobile suspension system is appropriately variable in response to disturbances in the form of various quiet or rough road surfaces generated during vehicle driving. The present invention relates to a shock absorber having a hybrid variable damping force for providing a damped force and improving the ride comfort by being able to adjust the damping coefficient for a specific frequency.
도1은 종래기술에 따른 쇽업소오버를 도시한 도면으로, 쇽업소오버(2)는 커버(4)를 일체로 형성한 로드(6)의 하단에 오리피스(8)를 뚫은 피스톤 밸브(10)를 장착하고 있다.1 is a view illustrating a shock absorber according to the prior art, wherein the shock absorber 2 is a piston valve 10 having an orifice 8 drilled at a lower end of a rod 6 in which a cover 4 is integrally formed. Equipped with.
피스톤밸브(10)를 실린더(12)에 내장하여 승강작동시 외력을 감쇄하게 하고 있다.The piston valve 10 is incorporated in the cylinder 12 to reduce the external force during the lifting operation.
상기한 실린더(12)내의 작동유체는 오일 ◎는 가스등 한 종류만 충진하거나 2가지 작동유체를 모두 쓸 경우에는 피스톤밸브(10)는 오일내에서 작동하게 하고, 오일과 가스의 중간에는 피스톤 플레이트(도시생략)를 개재하므로서 감쇄 작용하게 하고 가스는 완충역활만 하게 한다.When the working fluid in the cylinder 12 is filled with only one kind of gas such as oil ◎ or both working fluids, the piston valve 10 operates in the oil, and the piston plate in the middle of the oil and gas. (Not shown) allows attenuation and gas to act only as a buffer.
자동차의 주행중 스프링이 받는 충격에 의해 발생하는 고유진동은 유체에 흡수되어 오리피스(8)를 이동하면서 감쇄되어 승차감을 좋게 한다.The natural vibration generated by the shock received by the spring during driving of the vehicle is absorbed by the fluid and attenuated while moving the orifice 8 to improve the riding comfort.
쇽업소오버는 감쇠력을 구현하는 데 있어 등가 감쇠력을 나타내거나, 노면 형태와는 무관하게 반응하는 일정한 감쇠력을 가지게 되어 있다.The shock-absorber exhibits an equivalent damping force in realizing the damping force or has a constant damping force that reacts regardless of the road surface shape.
상기한 바와 같은 쇽업소오버는 감쇠력을 일정한 값을 가지므로 노면에 따른 적응이 어렵고, 이를 향상시키기 위한 제어방법으로는 복잡한 시스템을 구성하게 되는 문제점이 있다.The shock-absorber as described above has a fixed value of damping force, making it difficult to adapt to the road surface. As a control method for improving this, there is a problem in that a complex system is constructed.
상기한 바와 같이 이루어지는 종래기술의 문제점을 해소하기 위하여 제안된 것으로, 본 발명의 목적은 자동차 현가장치에 사용되는 쇽업소오버가 차량 주행중 발생하는 정숙하거나 거친 다양한 노면에 따른 형태의 외란에 대해 가변적인 적절하게 조절된 감쇠력을 제공하며, 특정 주파수에 대하여 그 감쇠계수를 조절 가능하게 됨으로서 승차감을 향상시키기 위한 하이브리드 가변 감쇠력을 가지는 쇽업소오버를 제공하는데 있다. It is proposed to solve the problems of the prior art made as described above, and an object of the present invention is to vary the response to a disturbance in the form of various quiet or rough road surfaces generated during driving of the shock absorber used in the vehicle suspension system. Providing a properly adjusted damping force, and by adjusting the damping coefficient for a specific frequency to provide a shock-absorber having a hybrid variable damping force to improve the ride comfort.
이를 실현하기 위한 본 발명은The present invention for realizing this
쇽업소오버 외통, 피스톤로드를 통한 외력에 의해 작동유체의 유동 방향을 변환시켜가면서 승강하여 감쇄력을 발생시키는 피스톤을 구비한 쇽업소오버에 있어서,In the shock absorber provided with a piston that generates a damping force by lifting and changing the flow direction of the working fluid by an external force through the shock absorber outer cylinder and the piston rod,
상기 피스톤은 쇽업소오버의 내주면을 미끄러지게 일정 외경과 길이로 조립된 내파이프와, The piston is an inner pipe assembled to a certain outer diameter and length to slide the inner peripheral surface of the shock absorber,
상기 내파이프의 하부에 조립되면서 외측 저면에 구비된 탄성판에 의해 쇽업소오버 하부쳄버와 연통 개구되는 통공을 복수개 형성하여 피스톤로드의 하단에 체결되는 밸브판과,A valve plate which is assembled to a lower portion of the inner pipe and forms a plurality of through holes communicating with the shock absorber lower chamber by an elastic plate provided on an outer bottom thereof and fastened to the lower end of the piston rod;
상기 밸브판상에 일정 공간을 갖는 피스톤쳄버를 형성하게 피스톤로드의 외주면과 내파이프의 내주면을 연결 부착 형성되는 댐퍼고무와, A damper rubber formed by connecting and connecting the outer circumferential surface of the piston rod and the inner circumferential surface of the inner pipe to form a piston chamber having a predetermined space on the valve plate;
상기 댐퍼고무가 부착되는 피스톤로드에 쇽업소오버 상부쳄버와 피스톤쳄버를 연통시키는 유로에 급격한 오일의 유동을 저지하게 설치한 오리피스를 포함한 구성으로 이루어지는 하이브리드 가변 감쇠력을 가지는 쇽업소오버를 제공하는데 있다.It is to provide a shock absorber having a hybrid variable damping force consisting of a configuration including an orifice installed to prevent the rapid flow of oil in the flow path for communicating the shock absorber upper chamber and the piston chamber to the piston rod to which the damper rubber is attached.
이하, 본 발명의 바람직한 일 실시에를 첨부한 도면에 의하여 더욱 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings a preferred embodiment of the present invention will be described in more detail.
도2는 본 발명에 따른 하이브리드 가변 감쇠력을 가지는 쇽업소오버를 도시한 도면이다.2 is a diagram illustrating a shock-over having a hybrid variable damping force according to the present invention.
쇽업소오버(22)는 쇽업소오버 외통(24), 피스톤로드(26)를 통한 외력에 의해 작동유체의 유동 방향을 변환시켜 가면서 승강하여 감쇄력을 발생시키는 피스톤(28)을 구비하여 이루어지고 있다.The shock absorber 22 is provided with the piston 28 which raises and lowers the damping force while changing the flow direction of the working fluid by the external force through the shock absorber outer cylinder 24 and the piston rod 26. .
상기 피스톤(28)은 내파이프(30), 탄성판(32)을 구비한 밸브판(34), 댐퍼고무(36), 오리피스(38)를 구비 형성하여 이루어지고 있다. The piston 28 is formed by forming the inner pipe 30, the valve plate 34 having the elastic plate 32, the damper rubber 36, and the orifice 38.
내파이프(30)는 쇽업소오버(22)의 내주면을 미끄러지게 일정 외경과 길이로 쇽업소오버 외통(24에 조립되고 있다.The inner pipe 30 is assembled to the shock absorber outer cylinder 24 at a constant outer diameter and length so as to slide the inner circumferential surface of the shock absorber 22.
밸브판(34)은 내파이프(30)의 하부에 조립되면서 외측 저면에 구비된 탄성판(32)에 의해 쇽업소오버 하부쳄버(40)와 연통 개구되는 통공(42)을 복수개 형성하여 피스톤로드(26)의 하단에 체결되고 있다.The valve plate 34 is assembled to the lower portion of the inner pipe 30 and forms a plurality of through-holes 42 communicating with the shock absorber lower chamber 40 by the elastic plate 32 provided on the outer bottom thereof, thereby forming a piston rod. It is fastened to the lower end of 26.
상기 댐퍼고무(36)는 밸브판(34)상에 일정 공간을 갖는 피스톤쳄버(44)를 형성하게 피스톤로드(26)의 외주면과 내파이프(30)의 내주면을 연결 부착 형성되고 있다.The damper rubber 36 is formed by connecting the outer circumferential surface of the piston rod 26 and the inner circumferential surface of the inner pipe 30 to form a piston chamber 44 having a predetermined space on the valve plate 34.
상기 오리피스(38)는 댐퍼고무(36)가 부착되는 피스톤로드(26)에 쇽업소오버 상부쳄버(46)와 피스톤쳄버(44)를 연통시키는 유로(48)에 급격한 오일의 유동을 저지하게 형성되고 있다.The orifice 38 is formed to prevent the rapid flow of oil in the flow path 48 for communicating the shock absorber upper chamber 46 and the piston chamber 44 to the piston rod 26 to which the damper rubber 36 is attached. It is becoming.
상기한 바와 같이 이루어지는 본 발명의 작용을 설명하면, 차량의 주행시 포장도로에서 쇽업소오버(22)에 전달되는 외력을 크지않고 미미하여 댐퍼고무(36)의 변위에 의해 대부분 흡수된다.When explaining the operation of the present invention made as described above, the external force transmitted to the shock absorber 22 on the pavement road during driving of the vehicle is not large and is absorbed mostly by the displacement of the damper rubber 36.
그리고 거친 노면의 주행시 발생한 큰 외력(유동)은 쇽업소오버 상부쳄버(46)의 작동유체가 피스톤로드(26)의 유로(48)와 오리피스(48)를 통해 피스톤쳄버(44)로 유동하게 되면 다시 유체는 밸브판(34)의 탄성판(32)을 밀면서 통공(42)을 통해 쇽업소오버 하부쳄버(40)까지 유동하게 되면서 감쇄작용을 하여 외력을 흡수하게 된다.In addition, when a large external force (flow) generated when driving on a rough road surface, the working fluid of the shock absorber upper chamber 46 flows to the piston chamber 44 through the flow path 48 and the orifice 48 of the piston rod 26. Again, the fluid flows through the through hole 42 to the shock absorber lower chamber 40 while pushing the elastic plate 32 of the valve plate 34 to absorb the external force.
즉, 피스톤로드(26)의 좁은 유로(48)와 오리피스(38)를 통과하면서 감쇄작용을 하게 된다.That is, the attenuation action is performed while passing through the narrow passage 48 and the orifice 38 of the piston rod 26.
다시말해 작은 외력은 댐퍼고무(36)에 의해 흡수되어 피스톤(28) 상하 간의 실제 유체의 이동은 없으며, 큰 외력은 오리피스(38)를 통하여 피스톤(28) 상하의 유체의 이동이 이루어져 감쇄력을 발휘하게 된다.In other words, the small external force is absorbed by the damper rubber 36 so that there is no movement of the actual fluid between the piston 28 and the upper and lower parts. do.
이와 같은 하이브리드 형태는 또한 특정 주파수에 대한 최대 감쇠능력을 가지게 설계 가능하므로 이를 이용하여 서스펜션 홉 및 트램프(Hop & tramp) 주파수를 감쇠시켜 승차감을 크게 향상시킬 수 있게 된다.This hybrid type can also be designed to have maximum attenuation for a particular frequency, which can be used to attenuate suspension hop and tramp frequencies to significantly improve ride comfort.
또한, 쇽업소오버 상부 쳄버(46)에서 하부 쳄버(40)로의 유체 이동은 탄성판(32)의 탄성 특성에 의존하여 감쇄 특성을 나타내며, 쇽업소오버 하부쳄버(40)에서 상부쳄버(46)로의 유체 유동은 평판스프링인 탄성판(32)이 통공(42)을 부분적으로 차단하게 하므로 쇽업소버의 범핑과 리바운딩 시 그 특성을 상이하게 하여 복동식의 특성을 구현하여 사용할 수 있게 된다.In addition, fluid movement from the shock absorber upper chamber 46 to the lower chamber 40 exhibits attenuation characteristics depending on the elastic characteristics of the elastic plate 32, and the upper chamber 46 in the shock absorber lower chamber 40. The fluid flow to the furnace allows the elastic plate 32, which is a flat spring, to partially block the through-hole 42, thereby making it possible to implement double-acting characteristics by differentiating the characteristics during bumping and rebounding of the shock absorber.
상기한 본 발명은 노면에 따라 다양한 감쇠 특성을 나타내며, 서스펜션의 특정 주파수에 감쇠계수를 조절하여 승차감을 향상하게 되는 효과가 있다.The present invention exhibits various attenuation characteristics according to the road surface, and has an effect of improving the riding comfort by adjusting the attenuation coefficient at a specific frequency of the suspension.
종래와 같이 액티브 컨트롤 써스펜션과 같이 복잡한 외부 시스템이 필요 없어 부품과 공정축소가 이루어지는 효과가 있다.There is no need for a complicated external system such as an active control suspension as in the prior art, thereby reducing parts and process.
따라서 하이브리드 형태의 쇽업소오버 피스폰에 의해 다양한 노면(정숙한 노면 및 거친 노면)에 대해 적절한 감쇠특성 조절이 가능하며, 특정 주파수에 대하여 그 감쇠계수를 조절 가능한 효과가 있다.Therefore, it is possible to adjust the attenuation characteristics appropriate to various road surfaces (silent road surface and rough road surface) by the hybrid type shock-absorber, and the attenuation coefficient can be adjusted for a specific frequency.
도1은 종래기술에 따른 쇽업소오버를 도시한 도면.1 is a diagram illustrating a shopover according to the prior art.
도2는 본 발명에 따른 하이브리드 가변 감쇠력을 가지는 쇽업소오버를 도시한 도면.Figure 2 illustrates a shock-absorber having a hybrid variable damping force according to the present invention.
*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
22:쇽업소오버 24:쇽업소오버 외통22: shop over 24: shop over
26:피스톤로드 28;피스톤26: piston rod 28; piston
30:내파이프 32:탄성판30: pipe 32: elastic plate
34:밸브판 36:댐퍼고무34: valve plate 36: damper rubber
38:오리피스 40:쇽업소오버 하부쳄버38: Orifice 40: Shock absorber lower chamber
42:통공 44:피스톤쳄버42: Through 44: Piston Chamber
46:쇽업소오버 상부쳄버 48:유로46: shop over upper chamber 48: euro
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| KR10-2002-0054675A KR100482108B1 (en) | 2002-09-10 | 2002-09-10 | Shock absorber having hybrid variable damping force |
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| KR100482108B1 true KR100482108B1 (en) | 2005-04-13 |
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| CN110469226A (en) * | 2018-05-11 | 2019-11-19 | 无锡商业职业技术学院 | A kind of automobile shutdown damping unit |
| CN109253204A (en) * | 2018-10-15 | 2019-01-22 | 襄阳奇竞特机电制造有限责任公司 | A kind of magnetoelectricity reaction equation variable-damp vibration damper |
| KR102410227B1 (en) | 2020-11-13 | 2022-06-20 | 한성대학교 산학협력단 | A two-wheeled vehicle suspension with variable damping force |
| CN114718982A (en) * | 2021-11-29 | 2022-07-08 | 吴江市卫国织造厂 | Buffer device for textile machinery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR970026047A (en) * | 1995-11-14 | 1997-06-24 | 전성원 | Variable damper device for automobile shock absorber |
| KR20010035589A (en) * | 1999-10-01 | 2001-05-07 | 이계안 | Shock absorber |
| KR20020032107A (en) * | 2000-10-25 | 2002-05-03 | 이계안 | Shock absorber of automobile |
| KR20020051726A (en) * | 2000-12-23 | 2002-06-29 | 이계안 | The intake valve of an automotive shock absorber |
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2002
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR970026047A (en) * | 1995-11-14 | 1997-06-24 | 전성원 | Variable damper device for automobile shock absorber |
| KR20010035589A (en) * | 1999-10-01 | 2001-05-07 | 이계안 | Shock absorber |
| KR20020032107A (en) * | 2000-10-25 | 2002-05-03 | 이계안 | Shock absorber of automobile |
| KR20020051726A (en) * | 2000-12-23 | 2002-06-29 | 이계안 | The intake valve of an automotive shock absorber |
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