KR20070066316A - Damping adjustable shock-absorber - Google Patents

Damping adjustable shock-absorber Download PDF

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Publication number
KR20070066316A
KR20070066316A KR1020050127341A KR20050127341A KR20070066316A KR 20070066316 A KR20070066316 A KR 20070066316A KR 1020050127341 A KR1020050127341 A KR 1020050127341A KR 20050127341 A KR20050127341 A KR 20050127341A KR 20070066316 A KR20070066316 A KR 20070066316A
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South Korea
Prior art keywords
power source
coil
piston
damping force
emergency power
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KR1020050127341A
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Korean (ko)
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이계호
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현대모비스 주식회사
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Priority to KR1020050127341A priority Critical patent/KR20070066316A/en
Publication of KR20070066316A publication Critical patent/KR20070066316A/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
    • F16F9/32—Details
    • F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
    • F16F9/535—Magnetorheological [MR] fluid dampers
    • 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
    • F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
    • F16F9/46—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
    • F16F9/463—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall characterised by electrical connections
    • 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
    • F16F2222/06—Magnetic or electromagnetic
    • 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
    • F16F2224/00—Materials; Material properties
    • F16F2224/04—Fluids
    • F16F2224/045—Fluids magnetorheological

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid-Damping Devices (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

A damping force control type shock-absorber is provided to prevent an accident during a driving by preventing an abruptly attenuation decrement generated due to a short of power. A damping force control type shock-absorber includes a cylinder(2), a piston(6), a piston rod(8), a coil(10), an emergency power(12), and a relay. An inside of the cylinder is filled with MR(Magneto-Rheological) Fluid. The piston forms an orifice(4) penetrating a upper surface and a lower surface. The piston rod extends to an outside of the cylinder. The coil is formed at a periphery of the orifice to generate an electric field or a magnetic field. The emergency power is formed on the piston. The relay permits the emergency power to the coil when a vehicle power is disconnected.

Description

감쇠력제어식 쇽압소버{damping adjustable shock-absorber}Damping adjustable shock-absorber

도 1은 본 발명의 일실시예에 따른 감쇠력 제어식 쇽압소버를 도시한 단면구성도1 is a cross-sectional view showing a damping force controlled pressure absorber according to an embodiment of the present invention.

도 2는 상기 감쇠력 제어식 쇽압소버의 회로구성도2 is a circuit diagram of the damping force controlled shock absorber;

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

2. 실린더 4. 오리피스 2. Cylinder 4. Orifice

6. 피스톤 8. 피스톤로드 6. Piston 8. Piston Rod

10. 코일 12. 비상전원10. Coil 12. Emergency Power

14. 릴레이 16. 차량전원 14. Relay 16. Vehicle Power

본 발명은 감쇠력제어식 쇽압소버에 관한 것으로서, 보다 상세하게는 MR유체 를 이용하여 감쇠력을 조절하며 전원의 단선에 의해 발생되는 급작스런 감쇠력 감소를 방지하여 운행중 사고를 막을 수 있도록 된 새로운 구조의 감쇠력제어식 쇽압소버에 관한 것이다.The present invention relates to a damping force control type pressure absorber, and more particularly, a damping force control type of a new structure which is capable of preventing accidents during operation by controlling the damping force by using MR fluid and preventing a sudden reduction of damping force caused by disconnection of the power source. It is about shock absorber.

최근 들어, MR유체(Magneto-Rheological Fluid), 즉, 전기장 또는 자기장에 의해 유동성을 제어할 수 있도록 된 유체를 이용하여 감쇠력을 조절할 수 있도록 된 새로운 개념의 서스펜션장치가 개발되어 사용되고 있다.Recently, a new concept suspension device has been developed and used to control the damping force by using a magneto-rheological fluid, that is, a fluid capable of controlling fluidity by an electric or magnetic field.

상기 서스펜션장치는 쇽압소버의 내부에 MR유체를 충진하고, 쇽압소버 내부의 피스톤에 오리피스를 형성하여, 오리피스 주변에 구비된 코일에 전류를 통전시키므로써, 이때 발생되는 전기장 또는 자기장에 의해, 오리피스를 통과하는 MR유체의 유동성이 변동되어 쇽압소버의 감쇠력을 조절할 수 있도록 구성된다.The suspension device fills the MR fluid inside the shock absorber, forms an orifice in the piston inside the shock absorber, and conducts a current to the coils provided around the orifice. The fluidity of the MR fluid passing through the orifice is varied so that the damping force of the shock absorber can be adjusted.

그런데, 이러한 쇽압소버는 오리피스에 연결되는 전원이 제어장치의 오류 또는 단선에 의해 차단될 경우 감쇠력이 급격히 감소하며, 특히 코너링시 이러한 사고가 발생될 경우 차량이 안정성을 잃고 회전 또는 전복되어 사고를 일으킬 수 있는 문제점이 있었다.However, the damping force is rapidly reduced when the power source connected to the orifice is cut off by an error or disconnection of the control device. In particular, when such an accident occurs during cornering, the vehicle loses stability and rotates or overturns, causing an accident. There was a problem that could be.

본 발명은 상기의 문제점을 해결하기 위한 것으로서, 본 발명의 목적은 MR유체를 이용하여 감쇠력을 조절하면서도 전원의 단선에 의해 발생되는 급작스런 감쇠력 감소를 방지하여 운행중 사고를 막을 수 있도록 된 새로운 구조의 감쇠력제어식 쇽압소버를 제공하는 것이다.The present invention is to solve the above problems, an object of the present invention is to control the damping force by using MR fluid while preventing the sudden damping force caused by disconnection of the power supply damping force of the new structure to prevent accidents during operation It is to provide a controlled shock absorber.

본 발명에 따르면, 내부에 MR유체가 충진되는 실린더(2)와, 상기 실린더(2) 내부에 장착되며, 상하면을 관통하는 오리피스(4)가 형성되는 피스톤(6)과, 상기 피스톤(6)에 연결되어 상기 실린더(2)의 외부로 연장되는 피스톤로드(8)와, 차량전원(16)에 연결되며, 상기 오리피스(4)의 주변에 전기장 또는 자기장을 발생시키도록 상기 오리피스(4) 주변에 형성되는 코일(10)과, 상기 코일(10)과 연결되며, 상기 피스톤(6)에 형성되는 비상전원(12)과, 상기 차량전원(16)과 코일(10) 및 비상전원(12)에 동시에 연결되며 차량전원(16)이 차단될 경우 비상전원(12)을 상기 코일(10)에 인가하는 릴레이(14)를 포함하는 것을 특징으로 하는 감쇠력제어식 쇽압소버가 제공된다. According to the present invention, a cylinder (2) filled with MR fluid therein, a piston (6) formed inside the cylinder (2), and having an orifice (4) penetrating the upper and lower surfaces, and the piston (6). A piston rod 8 which is connected to the piston rod 8 and which extends out of the cylinder 2, and is connected to a vehicle power source 16 and around the orifice 4 to generate an electric or magnetic field around the orifice 4. Coil 10 formed in the, and connected to the coil 10, the emergency power 12 formed in the piston 6, the vehicle power 16 and the coil 10 and the emergency power 12 And a relay 14 for applying the emergency power 12 to the coil 10 when the vehicle power source 16 is cut off at the same time.

바람직하게는, 상기 비상전원(12)은 상기 차량전원(16)에 연결되어 차량전원(16)에 의해 충전되는 충전지이다. Preferably, the emergency power source 12 is a rechargeable battery connected to the vehicle power source 16 and charged by the vehicle power source 16.

이하, 본 발명의 바람직한 실시예를 첨부한 도면에 의거하여 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

도 1내지 도 2는 본 발명의 일실시예에 따른 감쇠력 제어식 쇽압소버를 도시한 것으로, 상기 쇽압소버는 내부에 MR유체가 충진된 실린더(2)와, 상기 실린더(2) 내부에 장착되며 중간부에는 그 상하면을 관통하는 오리피스(4)가 형성된 피스톤(6)과, 상기 피스톤(6)에 연결되어 실린더(2)의 외부로 연장되는 피스톤로드(8)와, 차량전원(16)에 연결되며 상기 오리피스(4) 주변에 전기장 또는 자기장을 발생시키 는 코일(10)과, 상기 피스톤(6)에 구비되며 상기 코일(10)에 연결된 비상전원(12)과, 상기 차량전원(16)과 코일(10) 및 비상전원(12)에 동시에 연결된 릴레이(14)로 구성된다.1 to 2 illustrate a damping force controlled pressure absorber according to an embodiment of the present invention, wherein the pressure absorber has a cylinder 2 filled with MR fluid therein, and is mounted inside the cylinder 2. The middle portion includes a piston 6 having an orifice 4 penetrating the upper and lower surfaces thereof, a piston rod 8 connected to the piston 6 and extending out of the cylinder 2, and a vehicle power source 16. A coil 10 connected to and generating an electric or magnetic field around the orifice 4, an emergency power source 12 provided at the piston 6 and connected to the coil 10, and the vehicle power source 16. And a relay 14 simultaneously connected to the coil 10 and the emergency power supply 12.

상기 코일(10)은 피스톤(6)의 둘레부에 감겨 전원이 인가되면 전기장 또는 자기장을 발생시켜 MR유체의 유동성을 제어할 수 있도록 구성된 것으로, 차량의 제어장치(ECU,15)를 통해 차량전원(16) 즉, 차량의 배터리에 연결되어, 제어장치(15)에 의해 감쇠력을 조절할 수 있도록 구성된다. The coil 10 is wound around the circumference of the piston 6 to generate an electric or magnetic field when power is applied to control the fluidity of the MR fluid, the vehicle power through the control unit (ECU, 15) of the vehicle (16) That is, connected to the battery of the vehicle, it is configured to adjust the damping force by the control device (15).

상기 비상전원(12)은 전술한 차량전원(16)에 연결되어 충전되는 충전지를 이용한다.The emergency power source 12 uses a rechargeable battery connected to the vehicle power source 16 described above.

상기 릴레이(14)는 도 2에 도시한 바와 같이, 상기 차량전원(16)의 인가가 차단되면, 탄성에 의해 상기 코일(10)과 상기 비상전원(12)을 연결하는 연결단자(18)가 구비됨으로써, 상기 비상전원(12)의 전력을 상기 코일(10)에 인가하여, 쇽압소버의 감쇠력을 높일 수 있도록 구성된다. As shown in FIG. 2, when the application of the vehicle power source 16 is blocked, the relay 14 has a connection terminal 18 connecting the coil 10 and the emergency power source 12 by elasticity. By being provided, the power of the emergency power supply 12 is applied to the coil 10 so as to increase the damping force of the shock absorber.

이때, 상기 비상전원(12)은 쇽압소버의 감쇠력을 최대로 유지할 정도의 전력을 코일(10)에 공급할 수 있을 정도의 용량으로 구성하는 것이 바람직하다.At this time, the emergency power source 12 is preferably configured to have a capacity that can supply the power to the coil 10 to maintain the damping force of the shock absorber to the maximum.

따라서, 정상적인 상황에서는 상기 릴레이(14)의 연결단자(18)는 직선으로 표시한 바와 같이, 코일(10)과 차량전원(16)을 연결하여 제어장치(15)로 쇽압소버의 감쇠력을 제어할 수 있다. Therefore, under normal circumstances, as shown in the straight line, the connection terminal 18 of the relay 14 connects the coil 10 and the vehicle power source 16 to control the damping force of the shock absorber with the control device 15. can do.

그리고, 제어장치(15)의 오류 또는 단선에 의해 차량전원(16)이 차단될 경우 상기 연결단자(18)는 점선으로 도시한 바와 같이, 상기 비상전원(12)과 코일(10)을 연결하여 비상전원(12)의 전류를 코일(10)에 인가하여 감쇠력을 증대시킬 수 있다.In addition, when the vehicle power source 16 is cut off due to an error or disconnection of the control device 15, the connection terminal 18 connects the emergency power source 12 and the coil 10 as shown by a dotted line. A damping force can be increased by applying a current from the emergency power source 12 to the coil 10.

이와 같이 구성된 감쇠력 제어식 쇽압소버는 제어장치(15)의 오류 또는 단선에 의해 차량전원(16)이 공급되지 않을 경우, 자동으로 비상전원(12)을 코일(10)에 인가하여 쇽압소버의 감쇠력을 유지하므로, 차량의 운행시 일측서스펜선의 감쇠력이 급속히 감쇠되어 차량이 안정을 잃는 것을 방지할 수 있으며, 특히, 코너링시 차량이 안정성을 잃고 회전 또는 전복되어 사고를 방지할 수 있는 장점이 있다. The damping force controlled pressure absorber configured as described above automatically applies the emergency power supply 12 to the coil 10 when the vehicle power source 16 is not supplied due to an error or disconnection of the control device 15. Since the damping force of one side suspension line is rapidly attenuated during driving of the vehicle, it is possible to prevent the vehicle from becoming unstable. In particular, the cornering of the vehicle loses its stability and the rotation or overturning prevents an accident. .

또한, 상기 비상전원(12)은 차량전원(16)에 의해 충전되는 충전지를 이용하므로, 비상전원(12)이 방전되어 비상시에 코일(10)이 작동되지 않는 것을 방지할 수 있는 장점이 있다.In addition, since the emergency power source 12 uses a rechargeable battery charged by the vehicle power source 16, the emergency power source 12 may be discharged to prevent the coil 10 from operating in an emergency.

이상과 같이 본 발명에 의하면, 쇽압소버의 피스톤(6)에 비상전원(12)을 구비하여, 코일(10)에 인가되는 차량전원(16)이 차단될 경우 자동으로 비상전원(12)을 코일(10)에 인가하여 감쇠력을 유지할 수 있도록 함으로써, MR유체를 이용하여 감쇠력을 조절하면서도 전원의 단선에 의해 발생되는 급작스런 감쇠력 감소를 방지하여 운행중 사고를 막을 수 있도록 된 새로운 구조의 감쇠력제어식 쇽압소버를 제공할 수 있다.According to the present invention as described above, the emergency power supply 12 is provided on the piston 6 of the shock absorber so that the emergency power supply 12 is automatically turned off when the vehicle power supply 16 applied to the coil 10 is cut off. The damping force is applied to the coil 10 to maintain the damping force, thereby controlling the damping force using MR fluid, while preventing the sudden damping force caused by the disconnection of the power supply to prevent accidents during operation. Burr can be provided.

Claims (2)

내부에 MR유체가 충진되는 실린더(2);A cylinder 2 filled with MR fluid therein; 상기 실린더(2) 내부에 장착되며, 상하면을 관통하는 오리피스(4)가 형성되는 피스톤(6);A piston (6) mounted inside the cylinder (2) and having an orifice (4) penetrating the upper and lower surfaces; 상기 피스톤(6)에 연결되어 상기 실린더(2)의 외부로 연장되는 피스톤로드(8);A piston rod (8) connected to the piston (6) and extending out of the cylinder (2); 차량전원(16)에 연결되며, 상기 오리피스(4)의 주변에 전기장 또는 자기장을 발생시키도록 상기 오리피스(4) 주변에 형성되는 코일(10);A coil 10 connected to the vehicle power source 16 and formed around the orifice 4 to generate an electric or magnetic field around the orifice 4; 상기 코일(10)과 연결되며, 상기 피스톤(6)에 형성되는 비상전원(12); 및An emergency power source 12 connected to the coil 10 and formed on the piston 6; And 상기 차량전원(16)과 코일(10) 및 비상전원(12)에 동시에 연결되며 차량전원(16)이 차단될 경우 비상전원(12)을 상기 코일(10)에 인가하는 릴레이(14)를 포함하는 것을 특징으로 하는 감쇠력제어식 쇽압소버.A relay 14 connected to the vehicle power source 16, the coil 10, and the emergency power source 12 simultaneously and applying the emergency power source 12 to the coil 10 when the vehicle power source 16 is cut off. Damping force controlled shock absorber, characterized in that the. 제 1항에 있어서,The method of claim 1, 상기 비상전원(12)은 상기 차량전원(16)에 연결되어 상기 차량전원(16)에 의해 충전되는 충전지인 것을 특징으로 하는 감쇠력 제어식 쇽압소버.The emergency power source 12 is a damping force controlled pressure absorber, characterized in that the rechargeable battery is connected to the vehicle power source (16) and charged by the vehicle power source (16).
KR1020050127341A 2005-12-21 2005-12-21 Damping adjustable shock-absorber KR20070066316A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009045672A2 (en) * 2007-09-28 2009-04-09 Gm Global Technology Operations, Inc. Bi-fold valve-type magnetorheological fluid energy absorbing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009045672A2 (en) * 2007-09-28 2009-04-09 Gm Global Technology Operations, Inc. Bi-fold valve-type magnetorheological fluid energy absorbing device
WO2009045672A3 (en) * 2007-09-28 2009-05-28 Gm Global Tech Operations Inc Bi-fold valve-type magnetorheological fluid energy absorbing device
US7900755B2 (en) 2007-09-28 2011-03-08 GM Global Technology Operations LLC Bi-fold valve-type magnetorheological fluid energy absorbing device

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