KR20080013501A - Damper - Google Patents

Damper Download PDF

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Publication number
KR20080013501A
KR20080013501A KR1020060075084A KR20060075084A KR20080013501A KR 20080013501 A KR20080013501 A KR 20080013501A KR 1020060075084 A KR1020060075084 A KR 1020060075084A KR 20060075084 A KR20060075084 A KR 20060075084A KR 20080013501 A KR20080013501 A KR 20080013501A
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South Korea
Prior art keywords
chamber
damper
gas
gas chamber
piston rod
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KR1020060075084A
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Korean (ko)
Inventor
허진혁
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현대자동차주식회사
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Priority to KR1020060075084A priority Critical patent/KR20080013501A/en
Publication of KR20080013501A publication Critical patent/KR20080013501A/en

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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
    • F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
    • F16F9/066—Units characterised by the partition, baffle or like element
    • F16F9/067—Partitions of the piston type, e.g. sliding pistons
    • 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
    • F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
    • F16F9/068—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid where the throttling of a gas flow provides damping action
    • 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
    • F16F9/48—Arrangements for providing different damping effects at different parts of the stroke
    • F16F9/49—Stops limiting fluid passage, e.g. hydraulic stops or elastomeric elements inside the cylinder which contribute to changes in fluid damping
    • 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
    • F16F2222/00—Special physical effects, e.g. nature of damping effects
    • F16F2222/12—Fluid damping
    • F16F2222/126—Fluid damping using gases

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

A damper having a function of generating a variable spring constant is provided to control the damper with various spring constants by varying a gas spring constant that is applied to a piston rod when a pressure of nitrogen gas is controlled by using a hydraulic piston operating with an ECU. A damper having a function of generating a variable spring constant comprises a damper housing(1), an operating chamber(2) provided at an upper end of the damper housing and filled with a damping oil(3), a piston rod(4) included in the operating chamber and moving up/down the operating chamber by external force, a gas chamber(5) filled with nitrogen gas and provided at a lower end of the damper housing, a flow line(8) formed between the operating chamber and gas chamber and enabling the damping oil to flow toward the gas chamber for compensating a volume of the piston rod, and a hydraulic piston(6) provided at a bottom of the gas chamber for compressing or expanding the nitrogen gas in the gas chamber.

Description

가변스프링 상수 발생기능을 갖는 댐퍼{Damper}Damper with variable spring constant generator {Damper}

도 1 은 본 발명의 가변스프링 상수 발생기능을 갖는 댐퍼를 보인 도면.1 is a view showing a damper having a variable spring constant generating function of the present invention.

도 2 는 본 발명의 작동상태를 보인 도면.2 is a view showing an operating state of the present invention.

도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings

도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings

1: 댐퍼하우징, 2: 작동챔버,1: damper housing, 2: working chamber,

3: 감쇄유, 4: 피스톤로드,3: dampening oil, 4: piston rod,

5: 가스챔버, 6: 유압피스톤,5: gas chamber, 6: hydraulic piston,

7: 질소가스, 8: 유동라인,7: nitrogen gas, 8: flow line,

본 발명은 가변스프링 상수 발생기능을 갖는 댐퍼에 관한 것으로서, 특히 가스챔버에 충진된 질소가스의 압력을 이시유와 연동되는 유압피스톤을 이용하여 조정함에 따라 피스톤로드에 가해지는 가스스프링상수를 가변시켜 댐퍼를 다양한 스프링상수를 갖도록 제어할 수 있도록 한 가변스프링 상수 발생기능을 갖는 댐퍼에 관한 것이다.The present invention relates to a damper having a variable spring constant generation function, and in particular, by adjusting the pressure of the nitrogen gas filled in the gas chamber by using a hydraulic piston in conjunction with Ishiyu by varying the gas spring constant applied to the piston rod The present invention relates to a damper having a variable spring constant generating function that enables the damper to be controlled to have various spring constants.

일반적으로 댐퍼라 함은 가해지는 외력을 완충하여 상쇄시키는 것을 말한다.In general, the damper refers to buffering and offsetting the external force applied.

근래에 들어서는 댐퍼의 설치장소에 따라 그 댐퍼가 갖는 스프링상수를 가변시킬 수 있는 제품이 제공되고 있으며, 댐퍼의 스프링상수를 가변시키기 위한 일반적인 방법은 에어 스프링 시스템을 댐퍼에 적용하는 것이다.In recent years, products that can vary the spring constant of the damper according to the installation location of the damper has been provided, a general method for varying the spring constant of the damper is to apply an air spring system to the damper.

그러나, 종래기술은 댐퍼의 스프링상수를 가변시키기 위하여 고가이면서 구조가 매우 복잡한 에어 스프링 시스템을 댐퍼에 추가적으로 설치해야만 함에 따라 댐퍼의 제품 가격이 매우 상승할 뿐만 아니라 제품의 생산성이 하락하는 문제점이 발생하고 있었다.However, in the prior art, in order to vary the spring constant of the damper, an expensive and very complicated air spring system must be additionally installed in the damper, resulting in a problem that the product price of the damper not only increases but also the productivity of the product decreases. there was.

따라서, 상기 문제점을 해결하기 위한 본 발명은 댐퍼 하우징의 내부 상단에 감쇄유가 충진된 작동챔버를 형성하고, 상기 작동챔버에는 외력에 의해 작동챔버 내부를 상하로 움직이는 피스톤로드를 내장하며, 댐퍼 하우징의 내부 하단에 질소가스가 충진된 가스챔버를 형성하고, 상기 작동챔버와 가스챔버 사이에 유동라인을 형성하여 피스톤로드의 상하 움직임시 피스톤 로드 체적을 보상하기 위하여 감쇄유가 빠져나와 가스챔버 측으로 유동되도록 하며, 상기 가스챔버의 바닥부에는 유압에 의해 상하로 움직여 가스챔버 내부의 질소가스를 압축 또는 팽창시키는 유압피스톤을 형성하므로서, 가스챔버에 충진된 질소가스의 압력을 이시유와 연동되는 유 압피스톤을 이용하여 조정함에 따라 피스톤로드에 가해지는 가스스프링상수를 가변시켜 댐퍼를 다양한 스프링상수를 갖도록 제어할 수 있도록 한 가변스프링 상수 발생기능을 갖는 댐퍼를 제공함을 목적으로 한다.Therefore, the present invention for solving the above problems forms an operating chamber filled with attenuation oil in the upper end of the damper housing, the operating chamber has a built-in piston rod to move the inside of the operating chamber up and down by an external force, A gas chamber filled with nitrogen gas is formed at the lower end of the inside, and a flow line is formed between the operation chamber and the gas chamber so that attenuating oil flows out to flow to the gas chamber side to compensate for the piston rod volume when the piston rod moves up and down. A hydraulic piston is formed at the bottom of the gas chamber to move up and down by hydraulic pressure to compress or expand the nitrogen gas in the gas chamber, thereby connecting the pressure of the nitrogen gas filled in the gas chamber with the Ishiyu. The damper by varying the gas spring constant applied to the piston rod An object of the provide a damper having a variable spring constant generating function to control so as to have a different spring constant.

상기 목적달성을 위한 본 발명은,The present invention for achieving the above object,

청구범위 제 1 항에 의하여,According to claim 1,

댐퍼에 있어서,In the damper,

댐퍼 하우징의 내부 상단에 감쇄유가 충진된 작동챔버를 형성하고, 상기 작동챔버에는 외력에 의해 작동챔버 내부를 상하로 움직이는 피스톤로드를 내장하며, 댐퍼 하우징의 내부 하단에 질소가스가 충진된 가스챔버를 형성하고, 상기 작동챔버와 가스챔버 사이에 유동라인을 형성하여 피스톤로드의 상하 움직임시 피스톤 로드 체적을 보상하기 위하여 감쇄유가 빠져나와 가스챔버 측으로 유동되도록 하며, An operating chamber filled with attenuation oil is formed at the upper end of the damper housing, and the operating chamber includes a piston rod moving up and down inside the operating chamber by external force, and a gas chamber filled with nitrogen gas at the lower end of the damper housing. And a flow line is formed between the operation chamber and the gas chamber so that the attenuation oil escapes to flow to the gas chamber side to compensate for the piston rod volume when the piston rod moves up and down.

상기 가스챔버의 바닥부에는 유압에 의해 상하로 움직여 가스챔버 내부의 질소가스를 압축 또는 팽창시키는 유압피스톤을 형성한 것을 특징으로 한다.A hydraulic piston is formed at the bottom of the gas chamber to move up and down by hydraulic pressure to compress or expand nitrogen gas inside the gas chamber.

청구범위 제 2 항에 의하여,According to claim 2,

상기 유압피스톤은 이시유의 제어에 의해 가변적으로 공급되는 유압에 의해 상승 또는 하강하여 가스챔버 내의 질소가스를 압축 또는 팽창시키는 것을 특징으로 한다.The hydraulic piston is characterized by compressing or expanding nitrogen gas in the gas chamber by raising or lowering by hydraulic pressure variably supplied by the control of the oil.

이하, 첨부된 도면 도 1 과 도 2 를 참조하여 본 발명의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, FIGS. 1 and 2.

도면부호 1 은 댐퍼 하우징을 나타낸다.Reference numeral 1 denotes the damper housing.

상기 댐퍼 하우징(1)의 내부 상단에 감쇄유(3)가 충진된 작동챔버(2)를 형성하고, 상기 작동챔버(2)에는 외력에 의해 작동챔버(2) 내부를 상하로 움직이는 피스톤로드(4)를 내장한다.An actuating chamber 2 filled with attenuation oil 3 is formed in the upper end of the damper housing 1, and the actuating chamber 2 has a piston rod moving up and down inside the actuating chamber 2 by an external force ( 4) built-in.

즉, 상기 피스톤로드(4)의 상측이 부하측에 연결되어 외부로부터 가해지는 충격에 따라 상기 피스톤로드(4)가 작동챔버(2) 내부를 상하로 움직이게되며, 이 과정에서 작동챔버(2) 내부에 충진되어 있는 감쇄유(3)의 저항에 의해 외부에서 가해진 충격을 완충하게된다.That is, the piston rod 4 is moved up and down the inside of the operation chamber 2 in accordance with the impact applied from the outside by the upper side of the piston rod 4 is connected to the load side, in this process inside the operating chamber 2 The resistance of the damping oil (3) filled in to buffer the impact applied from the outside.

한편, 상기 댐퍼 하우징(1)의 내부 하단에 질소가스가 충진된 가스챔버(5)를 형성하고, 상기 작동챔버(2)와 가스챔버(5) 사이에 유동라인(8)을 형성하여 피스톤로드(4)의 상하 움직임시 피스톤 로드 체적을 보상하기 위하여 감쇄유(3)가 빠져나와 가스챔버(5) 측으로 유동되도록 한다.On the other hand, a gas chamber 5 filled with nitrogen gas is formed in the inner lower end of the damper housing 1, and a flow line 8 is formed between the operation chamber 2 and the gas chamber 5 to form a piston rod. In order to compensate for the piston rod volume during the up and down movement of (4), the damping oil 3 exits and flows to the gas chamber 5 side.

그리고, 상기 가스챔버(5)의 바닥부에는 유압에 의해 상하로 움직여 가스챔버(5) 내부의 질소가스를 압축 또는 팽창시키는 유압피스톤(6)을 형성한다.Further, a hydraulic piston 6 is formed at the bottom of the gas chamber 5 to move up and down by hydraulic pressure to compress or expand the nitrogen gas inside the gas chamber 5.

상기 유압피스톤(6)은 이시유의 제어에 의해 가변적으로 공급되는 유압에 의해 상승 또는 하강하여 가스챔버(5) 내의 질소가스(7)를 압축 또는 팽창시킨다.The hydraulic piston 6 is raised or lowered by the hydraulic pressure variably supplied by the control of the oil to compress or expand the nitrogen gas 7 in the gas chamber 5.

상기 유압피스톤(6)이 상승하게되면 가스챔버(5) 내의 질소가스(7)가 압축되면서 가스챔버(5) 내부 압력이 높아지게되고, 이에의해 작동챔버(2) 내에 충진되어 있는 감쇄유(3)가 유동라인(8)을 통해 가스챔버(5) 측으로 유동되지 못하게되 며, 피스톤로드(4)는 외력에 의해 하강하려할때 감쇄유(3)가 가스챔버(5) 측으로 유동되지 못함에 따라 작동챔버(2) 내부를 하강하기 힘들어지게되는 것이다.When the hydraulic piston 6 rises, the nitrogen gas 7 in the gas chamber 5 is compressed and the pressure inside the gas chamber 5 is increased, whereby the attenuation oil 3 filled in the operating chamber 2 is increased. ) Does not flow to the gas chamber (5) through the flow line (8), the piston rod (4) does not flow to the gas chamber (5) when the attenuation oil (3) when trying to descend by the external force Therefore, it is difficult to descend the inside of the operation chamber (2).

이러한 상태가 가스 스프링상수가 높은 상태이다.This state is a state where the gas spring constant is high.

이에반해, 상기 유압피스톤(6)이 하강하게되면 가스챔버(5) 내의 질소가스(7)가 팽창되면서 가스챔버(5) 내부 압력이 낮아지게된다.On the contrary, when the hydraulic piston 6 is lowered, the nitrogen gas 7 in the gas chamber 5 expands, thereby lowering the pressure inside the gas chamber 5.

따라서, 피스톤로드(4)가 외력에 의해 하강하려할때 감쇄유(3)가 가스챔버(5) 측으로 유동됨에 따라 피스톤로드(4)가 작동챔버(2) 내부를 하강하기 쉬워지게되는 것이며, 이러한 상태가 가스 스프링상수가 낮은상태이다.Therefore, when the piston rod 4 tries to descend by the external force, as the damping oil 3 flows to the gas chamber 5 side, the piston rod 4 becomes easy to descend inside the operation chamber 2, This state is a low gas spring constant.

그리고, 상기 유압피스톤(6)으로 공급되는 유압을 차량에 탑재되어 있으면서도 사용빈도가 낮은 ESC 또는 ABS용 이시유의 제어유압을 이용함에 따라 별도의 유압발생장치를 사용하지 않고서도 댐퍼의 가변 스프링상수 기능을 제어할 수 있게된다.In addition, since the hydraulic pressure supplied to the hydraulic piston 6 is mounted on the vehicle, the control spring pressure of ISC oil for low-use ESC or ABS is used, so that the variable spring constant function of the damper is not used without a separate hydraulic generator. Will be able to control.

또한, 본 발명을 적용하게 되면 댐퍼를 이용하여 스프링 상수를 가변시킬 수 있게되므로 차량의 주행상황에 필요한 스프링 힘을 효과적으로 얻을 수 있게되는 효과를 기대할 수 있다.In addition, when the present invention is applied, it is possible to vary the spring constant using the damper, so that the effect of effectively obtaining the spring force required for the driving situation of the vehicle can be expected.

이상에서 설명한 바와같이 본 발명은 댐퍼 하우징의 내부 상단에 감쇄유가 충진된 작동챔버를 형성하고, 상기 작동챔버에는 외력에 의해 작동챔버 내부를 상하로 움직이는 피스톤로드를 내장하며, 댐퍼 하우징의 내부 하단에 질소가스가 충 진된 가스챔버를 형성하고, 상기 작동챔버와 가스챔버 사이에 유동라인을 형성하여 피스톤로드의 상하 움직임시 피스톤 로드 체적을 보상하기 위하여 감쇄유가 빠져나와 가스챔버 측으로 유동되도록 하며, 상기 가스챔버의 바닥부에는 유압에 의해 상하로 움직여 가스챔버 내부의 질소가스를 압축 또는 팽창시키는 유압피스톤을 형성하므로서, 가스챔버에 충진된 질소가스의 압력을 이시유와 연동되는 유압피스톤을 이용하여 조정함에 따라 피스톤로드에 가해지는 가스스프링상수를 가변시켜 댐퍼를 다양한 스프링상수를 갖도록 제어할 수 있도록 한 가변스프링 상수 발생기능을 갖는 댐퍼를 제공하는 효과를 기대할 수 있다.As described above, the present invention forms an operation chamber filled with attenuation oil in the upper end of the damper housing, and the operating chamber includes a piston rod moving up and down inside the operating chamber by an external force, and in the inner lower end of the damper housing. A gas chamber filled with nitrogen gas is formed, and a flow line is formed between the operation chamber and the gas chamber so that attenuating oil flows out and flows to the gas chamber side to compensate for the piston rod volume when the piston rod moves up and down. At the bottom of the chamber, the hydraulic piston moves up and down by hydraulic pressure to compress or expand the nitrogen gas inside the gas chamber, thereby adjusting the pressure of the nitrogen gas filled in the gas chamber by using a hydraulic piston linked to Ishiyu. Therefore, the gas spring constant applied to the piston rod is varied so that the damper can be The effect of providing a damper with a variable spring constant generation function that can be controlled to have a spring constant can be expected.

Claims (2)

댐퍼 하우징(1)의 내부 상단에 감쇄유(3)가 충진된 작동챔버(2)를 형성하고, 상기 작동챔버(2)에는 외력에 의해 작동챔버(2) 내부를 상하로 움직이는 피스톤로드(4)를 내장하며, 댐퍼 하우징(1)의 내부 하단에 질소가스가 충진된 가스챔버(5)를 형성하고, 상기 작동챔버(2)와 가스챔버(5) 사이에 유동라인(8)을 형성하여 피스톤로드(4)의 상하 움직임시 피스톤 로드 체적을 보상하기 위하여 감쇄유(3)가 빠져나와 가스챔버(5) 측으로 유동되도록 하며, An actuation chamber 2 filled with attenuation oil 3 is formed in the upper end of the damper housing 1, and the actuation chamber 2 has a piston rod 4 which moves up and down the inside of the actuation chamber 2 by an external force. ) And a gas chamber 5 filled with nitrogen gas at the lower end of the damper housing 1, and a flow line 8 is formed between the operation chamber 2 and the gas chamber 5. In order to compensate the piston rod volume during the vertical movement of the piston rod (4), the damping oil (3) exits and flows to the gas chamber (5) side, 상기 가스챔버(5)의 바닥부에는 유압에 의해 상하로 움직여 가스챔버(5) 내부의 질소가스를 압축 또는 팽창시키는 유압피스톤(6)을 형성한 것을 특징으로 하는 가변스프링 상수 발생기능을 갖는 댐퍼.A damper having a variable spring constant generating function, characterized in that the bottom of the gas chamber 5 is formed by a hydraulic piston (6) for moving up and down by hydraulic pressure to compress or expand the nitrogen gas inside the gas chamber (5). . 제 1 항에 있어서, The method of claim 1, 상기 유압피스톤(6)은 이시유의 제어에 의해 가변적으로 공급되는 유압에 의해 상승 또는 하강하여 가스챔버(5) 내의 질소가스(7)를 압축 또는 팽창시키는 것을 특징으로 하는 가변스프링 상수 발생기능을 갖는 댐퍼.The hydraulic piston (6) has a variable spring constant generating function, characterized in that the compression or expansion of the nitrogen gas (7) in the gas chamber 5 by rising or falling by the hydraulic pressure is supplied variably under the control of the oil. Damper.
KR1020060075084A 2006-08-09 2006-08-09 Damper KR20080013501A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107327532A (en) * 2017-08-17 2017-11-07 浙江师范大学 A kind of self-powered piezoelectric fluid damper
CN109435874A (en) * 2018-10-31 2019-03-08 胡成兵 A kind of ECU protective stent
CN109808425A (en) * 2019-01-23 2019-05-28 东风汽车集团有限公司 It is a kind of damping and stiffness-adjustable tire

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107327532A (en) * 2017-08-17 2017-11-07 浙江师范大学 A kind of self-powered piezoelectric fluid damper
CN107327532B (en) * 2017-08-17 2022-09-09 浙江师范大学 Self-powered piezoelectric fluid damper
CN109435874A (en) * 2018-10-31 2019-03-08 胡成兵 A kind of ECU protective stent
CN109435874B (en) * 2018-10-31 2020-09-15 倪彩飞 ECU protective bracket
CN109808425A (en) * 2019-01-23 2019-05-28 东风汽车集团有限公司 It is a kind of damping and stiffness-adjustable tire

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