KR20020049528A - Shock absorber - Google Patents

Shock absorber Download PDF

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Publication number
KR20020049528A
KR20020049528A KR1020000078717A KR20000078717A KR20020049528A KR 20020049528 A KR20020049528 A KR 20020049528A KR 1020000078717 A KR1020000078717 A KR 1020000078717A KR 20000078717 A KR20000078717 A KR 20000078717A KR 20020049528 A KR20020049528 A KR 20020049528A
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KR
South Korea
Prior art keywords
piston
cylinder
shock absorber
hole
space
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KR1020000078717A
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Korean (ko)
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KR100395325B1 (en
Inventor
윤승국
Original Assignee
류정열
기아자동차주식회사
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Priority to KR10-2000-0078717A priority Critical patent/KR100395325B1/en
Publication of KR20020049528A publication Critical patent/KR20020049528A/en
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Publication of KR100395325B1 publication Critical patent/KR100395325B1/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
    • F16F9/50—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
    • 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
    • F16F9/061—Mono-tubular units
    • 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
    • F16F2234/00—Shape
    • F16F2234/04—Shape conical

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

Abstract

PURPOSE: A shock absorber is provided to improve buffering by adjusting flow rate automatically according to load with inserting a conical bar to a through hole of a piston in moving the piston. CONSTITUTION: A shock absorber is composed of a cylinder(10) filled with fluid; a piston(20) moving in the cylinder, dividing the cylinder into two parts(A), and flowing fluid via a through hole(21); and a piston rod(30) fixed in a piston(20), and protruded outward by penetrating a lower part(10c) of the cylinder. Conical bars(12) are formed in the cylinder, and the conical bar is inserted to the through hole of the piston in moving the piston. The rate of flow moving via the through hole is adjusted automatically according to load. Buffering is improved with automatically regulating flow rate of the cylinder according to the load.

Description

쇽업소버{Shock absorber}Shock absorber

본 발명은 외부로부터의 충격을 완충시키는 쇽업소버에 관한 것으로, 특히가해지는 하중의 크기에 따라 완충력이 자동으로 변화되도록 하는 쇽업소버에 관한 것이다.The present invention relates to a shock absorber for cushioning shock from the outside, and more particularly to a shock absorber for automatically changing the shock absorbing force according to the magnitude of the load applied.

주지된 바와 같이, 차량의 현가장치나 해치백 도어의 지지대 등에 사용되고 있는 쇽업소버는 가해지는 충격을 완충시켜서 이의 구조물의 손상이 방지되도록 하는 것으로, 종래 쇽업소버는 도 1에 도시된 바와 같다.As is well known, the shock absorber used in the suspension of the vehicle, the support of the hatchback door, etc. is to cushion the impact applied to prevent damage to its structure, the conventional shock absorber is as shown in FIG.

도 1에 의하면 종래 쇽업소버는, 내부에 유체가 충진되어진 실린더(10)와 ; 실린더(10)에 이동가능하게 내장되어 실린더(10) 내부공간을 2개의 공간(A,B)로 구획하되, 관통홀(21)이 형성되어 공간(A,B)의 유체가 관통홀(21)을 통해서 유동되도록 하는 피스톤(20) 및; 한쪽 선단이 피스톤(20)에 고정되고, 다른 한쪽 선단이 실린더(10)의 하면(10c)을 관통하면서 외부로 돌출되어진 피스톤로드(30)로 구성되어진 구조로 되어 있다. 또한, 상기 실린더(10)의 상면(10b)에는 구조물(도시안됨)에 회전가능하게 고정되는 체결부(11)가 형성되고, 외부로 돌출되어진 피스톤로드(30)의 자유단에는 또다른 구조물(도시안됨)에 회전가능하게 고정되는 체결부(31)가 형성되며, 실린더(10) 내부의 공간(A,B)이 기밀을 유지하도록 피스톤(20)의 둘레면에는 O-링(22)이 끼워진다.1, a conventional shock absorber includes: a cylinder (10) filled with a fluid therein; It is movably embedded in the cylinder 10 to partition the inner space of the cylinder 10 into two spaces A and B, but a through hole 21 is formed so that the fluid in the spaces A and B passes through the through hole 21. A piston 20 to flow through; One end is fixed to the piston 20, and the other end has the structure comprised from the piston rod 30 which protruded outside, penetrating the lower surface 10c of the cylinder 10. As shown in FIG. In addition, a fastening portion 11 rotatably fixed to a structure (not shown) is formed on the upper surface 10b of the cylinder 10, and another structure (at the free end of the piston rod 30 protruding outward). (Not shown), a fastening portion 31 is rotatably fixed, and an O-ring 22 is formed on the circumferential surface of the piston 20 so that the spaces A and B inside the cylinder 10 are kept airtight. Is fitted.

상기 종래 쇽업소버의 작동상태를 개략적으로 설명해 보면, 외력에 의해서 실린더로드(31)가 당겨지게 되면, 공간(A)의 압력이 증가되어, 공간(A)의 유체가 피스톤(20)의 관통홀(21)을 통해서 공간(B)로 유동하게 되고, 이에 의해서 피스톤(20)과 피스톤로드(30)가 하방향으로 이동하게 된다. 또한, 외력에 의해서 실린더로드(31)가 밀리게 되면, 공간(B)의 압력이 증가되어, 공간(B)의 유체가피스톤(20)의 관통홀(21)을 통해서 공간(A)로 유동하게 되고, 이에 의해서 피스톤(20)과 피스톤로드(30)가 상방향으로 이동하게 된다.Referring to the operation state of the conventional shock absorber schematically, when the cylinder rod 31 is pulled by the external force, the pressure in the space (A) is increased, the fluid in the space (A) is a through hole of the piston (20) Flow through the space (21) to the space (B), thereby moving the piston 20 and the piston rod 30 in the downward direction. In addition, when the cylinder rod 31 is pushed by the external force, the pressure in the space B is increased, and the fluid in the space B flows through the through hole 21 of the piston 20 to the space A. As a result, the piston 20 and the piston rod 30 is moved upward.

따라서, 돌발적으로 외력이 가해지더라도, 공간(A,B)의 유체가 피스톤(20)의 관통홀(21)을 통해서 유동되면서 피스톤(20)과 피스톤로드(30)가 서서히 이동되므로, 가해진 외력이 완충되게 된다.Therefore, even if an external force is unexpectedly applied, the piston 20 and the piston rod 30 are gradually moved while the fluid in the spaces A and B flows through the through hole 21 of the piston 20, so that the applied external force is Will be buffered.

한편, 실린더(10) 내부공간 전체에 유체가 충진되는 경우, 외부 온도에 따라서 부피변화되는 유체에 의해 실린더(10) 내압이 증가하게 되어 실린더(10)가 과압에 의해 파손될 우려가 있다.On the other hand, when the fluid is filled in the entire inner space of the cylinder 10, the internal pressure of the cylinder 10 is increased by the fluid that changes in volume according to the external temperature, there is a risk that the cylinder 10 is damaged by overpressure.

따라서, 외부온도변화가 심한 곳에 사용되는 쇽업소버의 경우에는, 도 1에 도시된 바와 같이, 피스톤(20)과 상면(10b) 사이의 실린더(10)에 보조 피스톤(40)을 배치시켜서 공간(B)를 2개의 공간으로 구획하여, 보조 피스톤(40)과 상면(10b) 사이의 공간(C)에 기체가 채워진 공간(C)을 형성한다.Therefore, in the case of a shock absorber used in a place where the external temperature change is severe, as shown in FIG. 1, the auxiliary piston 40 is disposed in the cylinder 10 between the piston 20 and the upper surface 10b to provide a space ( B) is divided into two spaces to form a space C filled with gas in the space C between the auxiliary piston 40 and the upper surface 10b.

이러한 경우, 공간(B,C)에 채워진 유체가 부피팽창하여 공간(A,B)의 압력이 증가되면, 피스톤(40)이 상면(10b)쪽으로 이동되어, 압축률이 상대적으로 큰 기체가 채워진 공간(C)이 압축되게 되므로, 실린더(10)의 전체 내압이 적정 압력 이상으로 증가되지 않게 되어, 실린더(10)가 과압에 의해서 파손되지 않게 된다.In this case, when the fluid filled in the spaces B and C expands in volume to increase the pressure in the spaces A and B, the piston 40 moves toward the upper surface 10b, so that the space filled with gas having a relatively high compressibility is filled. Since (C) is compressed, the total internal pressure of the cylinder 10 does not increase above an appropriate pressure, and the cylinder 10 is not damaged by overpressure.

그러나, 상기 종래 기술에 따른 쇽업소버는, 피스톤(20)이 왕복이동될 때, 실린더(10)의 관통홀(21)을 통해서 유동되는 유체의 유동량이 균일하므로, 가해지는 하중의 크기에 따라서 피스톤(20)의 이동속도가 변화하게 된다.However, in the shock absorber according to the prior art, since the flow amount of the fluid flowing through the through hole 21 of the cylinder 10 when the piston 20 is reciprocated, the piston according to the magnitude of the load applied The moving speed of 20 is changed.

따라서, 피스톤로드(30)에 가해지는 하중이 허용하중보다 큰 경우에는 피스톤(20)이 빠르게 이동되면서 실린더 상면(10b)이나 하면(10c), 또는 보조 실린더(40)에 충격을 가하게 되어 사실상 완충기능을 상실하게 되는 문제가 발생되었다.Therefore, when the load applied to the piston rod 30 is greater than the allowable load, the piston 20 moves rapidly and impacts the cylinder upper surface 10b, the lower surface 10c, or the auxiliary cylinder 40, thereby substantially cushioning. The problem of loss of functionality has arisen.

이에 본 발명은 상기와 같은 문제를 해소하기 위해 발명된 것으로, 가해지는 하중의 크기에 따라 완충력이 자동으로 변화되도록 하는 쇽업소버를 제공함에 그 목적이 있다.The present invention has been invented to solve the above problems, and an object thereof is to provide a shock absorber to automatically change the buffer force according to the magnitude of the load applied.

도 1은 종래 기술에 따른 쇽업소버를 도시한 단면도,1 is a cross-sectional view showing a shock absorber according to the prior art,

도 2는 본 발명에 따른 쇽업소버의 제1실시예를 도시한 단면도,2 is a cross-sectional view showing a first embodiment of a shock absorber according to the present invention;

도 3은 본 발명에 따른 쇽업소버의 제2실시예를 도시한 단면도,3 is a cross-sectional view showing a second embodiment of a shock absorber according to the present invention;

도 4는 본 발명에 따른 쇽업소버의 제3실시예를 도시한 단면도이다.4 is a cross-sectional view showing a third embodiment of the shock absorber according to the present invention.

- 첨부도면의 주요 부분에 대한 용어 설명 --Explanation of terms for the main parts of the accompanying drawings-

10 ; 실린더,10a ; 둘레면,10; Cylinder 10a; Perimeter,

10b ; 상면,10c ; 하면,10b; Upper surface, 10c; if,

11 ; 체결부,12 ; 원뿔형 바아,11; Fastening portion 12; Conical Bar,

20 ; 피스톤,21 ; 관통홀,20; Piston 21; Through Hole,

22 ; O-링,30 ; 피스톤로드,22; O-ring, 30; Piston rod,

31 ; 체결부,40 ; 보조 피스톤,31; Fastening portion 40; Auxiliary piston,

41 ; O-링,42 ; 원뿔형 바아.41; O-ring, 42; Conical bar.

상기와 같은 목적을 달성하기 위한 본 발명은, 내부에 유체가 충진되어진 실린더와 ; 실린더에 이동가능하게 내장되어 실린더 내부공간을 2개의 공간으로 구획하되, 관통홀이 형성되어 공간의 유체가 관통홀을 통해서 유동되도록 하는 피스톤 및; 한쪽 선단이 피스톤에 고정되고, 다른 한쪽 선단이 실린더의 하면을 관통하면서 외부로 돌출되어진 피스톤로드로 구성되어진 쇽업소버에 있어서, 상기 실린더에 원뿔형 바아가 형성되어, 피스톤의 이동시 임의의 구간에서 피스톤의 관통홀에 원뿔형 바아가 끼워져서, 관통홀을 따라 유동되는 유체의 유동량이 자동으로 조절되는 것을 특징으로 하는 구조로 되어 있다.The present invention for achieving the above object is a cylinder filled with a fluid; A piston movably embedded in the cylinder to partition the inner space of the cylinder into two spaces, wherein a through hole is formed to allow fluid in the space to flow through the through hole; A shock absorber comprising one end fixed to a piston and the other end consisting of a piston rod projecting outward while penetrating the lower surface of the cylinder, wherein a cylindrical bar is formed in the cylinder to move the piston in any section during the movement of the piston. The conical bar is fitted into the through hole, so that the flow rate of the fluid flowing along the through hole is automatically adjusted.

이하 본 발명을 첨부된 예시도면에 의거하여 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 2 내지 도 4는 본 발명을 도시한 도면인 바, 종래 기술을 도시한 도 1과 동일한 부위에는 동일한 참조부호를 붙이면서 그 설명을 생략하기로 한다.2 to 4 are diagrams showing the present invention, and the description thereof will be omitted while attaching the same reference numerals to the same parts as those of FIG.

도 2에 의하면 본 발명에 따른 쇽업소버는, 내부에 유체가 충진되어진 실린더(10)와 ; 실린더(10)에 이동가능하게 내장되어 실린더(10) 내부공간을 2개의 공간(A,B)로 구획하되, 관통홀(21)이 형성되어 공간(A,B)의 유체가 관통홀(21)을 통해서 유동되도록 하는 피스톤(20) 및; 한쪽 선단이 피스톤(20)에 고정되고, 다른 한쪽 선단이 실린더(10)의 하면(10c)을 관통하면서 외부로 돌출되어진 피스톤로드(30)로 구성되되, 실린더(10)의 하면(10c)에 원뿔형 바아(12)가 형성되어, 피스톤(20)의 이동시 임의의 구간에서 피스톤(20)의 관통홀(21)에 원뿔형 바아(12)가 끼워져서, 관통홀(21)을 따라 유동되는 유체의 유동량이 자동으로 조절되도록 되어 있다.According to Figure 2 the shock absorber according to the invention, the cylinder 10 is filled with a fluid therein; It is movably embedded in the cylinder 10 to partition the inner space of the cylinder 10 into two spaces A and B, but a through hole 21 is formed so that the fluid in the spaces A and B passes through the through hole 21. A piston 20 to flow through; One end is fixed to the piston 20, the other end is composed of a piston rod 30 protruding to the outside while penetrating the lower surface (10c) of the cylinder 10, the lower surface (10c) of the cylinder (10) Conical bar 12 is formed, the conical bar 12 is fitted in the through hole 21 of the piston 20 in any section during the movement of the piston 20, so that the flow of fluid flowing along the through hole 21 Flow rate is adjusted automatically.

따라서, 피스톤로드(30)에 큰 외력이 가해지더라도, 실린더(10)의 상면(10b)으로부터 하방향으로 빠르게 이동되던 피스톤(20)이, 피스톤(20)의 관통홀(21)에 원뿔형 바아(12)가 끼워지면서 점진적으로 감속되게 되므로{피스톤(20)이 하방향으로 이동될수록 원뿔형 바아(12)의 직경이 증가되어 관통홀(21)을 통한 유체의 유동량이 점진적으로 감소되므로}, 가해진 외력에 의한 충격이 충분히 흡수된다.Therefore, even when a large external force is applied to the piston rod 30, the piston 20, which is rapidly moved downwardly from the upper surface 10b of the cylinder 10, has a conical bar (2) in the through-hole 21 of the piston 20. 12) is gradually decelerated while being fitted (as the piston 20 is moved downward, the diameter of the conical bar 12 is increased to gradually reduce the flow of fluid through the through-hole 21), the applied external force The shock by is sufficiently absorbed.

도 2에 도시된 실시예의 경우에는, 원뿔형 바아(12)가 실린더(10)의 하면(10c)에 형성되어 있지만, 필요에 따라서 실린더(10)의 상면(10b)이나, 상·하면(10b,10c) 모두에 원뿔형 바아(12)를 형성할 수 있음은 물론이다.In the case of the embodiment shown in Fig. 2, the conical bar 12 is formed on the lower surface 10c of the cylinder 10, but if necessary, the upper surface 10b of the cylinder 10, or the upper and lower surfaces 10b, It is a matter of course that the conical bar 12 can be formed in both 10c).

또한, 도 3에 도시된 바와 같이, 피스톤(20)과 상면(10b) 사이의 실린더(10)에 보조 피스톤(40)이 내장되어, 피스톤(20)과 상면(10b) 사이의 공간(B)이 2개의 공간(B,C)으로 구획되고, 보조 피스톤(40)과 상면(10b) 사이의 공간(C)에는 기체가 채워지는 경우에는, 보조 피스톤(40)에 원불형 바아(42)를 형성시킬 수도 있으며,도 4에 도시된 바와 같이, 실린더(10)의 하면(10c)과 보조 피스톤(40)에 원불형 바아(12 ; 42)를 각각 형성할 수도 있다.In addition, as shown in FIG. 3, the auxiliary piston 40 is built in the cylinder 10 between the piston 20 and the upper surface 10b, so that the space B between the piston 20 and the upper surface 10b. When the gas is filled in the space C between the auxiliary piston 40 and the upper surface 10b, the circular piston 42 is placed in the auxiliary piston 40. As shown in FIG. 4, circular bar 12 and 42 may be formed on the lower surface 10c and the auxiliary piston 40 of the cylinder 10, respectively.

이상 상기한 바와 같은 본 발명에 따르면, 임의의 구간상에서 피스톤의 관통홀에 끼워지는 원뿔형 바아가 실린더 내부에 형성되어, 가해지는 하중에 따라서 실린더 내부 유체의 유동량이 자동으로 제어되므로, 쇽업소버의 완충기능이 향상되고, 활용도가 보다 폭 넓어지는 효과가 있다.According to the present invention as described above, a conical bar fitted into the through hole of the piston on any section is formed in the cylinder, and the flow amount of the fluid in the cylinder is automatically controlled in accordance with the applied load, so that the shock absorber The function is improved, and the utilization is wider.

본 발명은 상기한 바와 같은 실시예에 한정되지 않고, 이하의 청구범위를 벗어나지 않는 한도내에서 다양하게 변형실시될 수 있음은 물론이다.The present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the following claims.

Claims (4)

내부에 유체가 충진되어진 실린더(10)와 ; 실린더(10)에 이동가능하게 내장되어 실린더(10) 내부공간을 2개의 공간(A,B)로 구획하되, 관통홀(21)이 형성되어 공간(A,B)의 유체가 관통홀(21)을 통해서 유동되도록 하는 피스톤(20) 및; 한쪽 선단이 피스톤(20)에 고정되고, 다른 한쪽 선단이 실린더(10)의 하면(10c)을 관통하면서 외부로 돌출되어진 피스톤로드(30)로 구성되어진 쇽업소버에 있어서,A cylinder 10 filled with fluid therein; It is movably embedded in the cylinder 10 to partition the inner space of the cylinder 10 into two spaces A and B, but a through hole 21 is formed so that the fluid in the spaces A and B passes through the through hole 21. A piston 20 to flow through; In a shock absorber composed of a piston rod (30) protruding outward while one end is fixed to the piston (20) and the other end penetrates the lower surface (10c) of the cylinder (10), 상기 실린더(10)에 원뿔형 바아(12 ; 42)가 형성되어, 피스톤(20)의 이동시 임의의 구간에서 피스톤(20)의 관통홀(21)에 원뿔형 바아(12)가 끼워져서, 관통홀(21)을 따라 유동되는 유체의 유동량이 자동으로 조절되는 것을 특징으로 하는 쇽업소버.Conical bars 12 and 42 are formed in the cylinder 10, and the conical bars 12 are fitted into the through holes 21 of the piston 20 at any interval during the movement of the piston 20, thereby providing a through hole ( 21. A shock absorber characterized in that the flow rate of the fluid flowing along the 21) is automatically adjusted. 제 1항에 있어서, 상기 실린더(10)의 상면(10b) 및/또는 하면(10c)에 원뿔형 바아(12)가 형성되어진 것을 특징으로 하는 쇽업소버.The shock absorber according to claim 1, wherein a conical bar (12) is formed on an upper surface (10b) and / or a lower surface (10c) of said cylinder (10). 제 1항에 있어서, 피스톤(20)과 상면(10b) 사이의 실린더(10)에 보조 피스톤(40)이 내장되어, 피스톤(20)과 상면(10b) 사이의 공간(B)이 2개의 공간(B,C)으로 구획되고, 보조 피스톤(40)과 상면(10b) 사이의 공간(C)에는 기체가 채워지되, 보조 피스톤(40)에 원불형 바아(42)가 형성되어진 것을 특징으로 하는 쇽업소버.The auxiliary piston 40 is built in the cylinder 10 between the piston 20 and the upper surface 10b, so that the space B between the piston 20 and the upper surface 10b has two spaces. It is divided into (B, C), the space (C) between the auxiliary piston 40 and the upper surface (10b) is filled with gas, characterized in that the auxiliary piston 40 is formed with a circular bar 42 Shock absorber. 제 2항에 있어서, 피스톤(20)과 상면(10b) 사이의 실린더(10)에 보조 피스톤(40)이 내장되어, 피스톤(20)과 상면(10b) 사이의 공간(B)이 2개의 공간(B,C)으로 구획되고, 보조 피스톤(40)과 상면(10b) 사이의 공간(C)에는 기체가 채워지되, 실린더(10)의 하면(10c)과 보조 피스톤(40)에 원불형 바아(12 ; 42)가 각각 형성되어진 것을 특징으로 하는 쇽업소버.3. The auxiliary piston 40 is built in the cylinder 10 between the piston 20 and the upper surface 10b, so that the space B between the piston 20 and the upper surface 10b has two spaces. The gas is filled in the space (C) between the auxiliary piston (40) and the upper surface (10b), and the circular bar at the lower surface (10c) and the auxiliary piston (40) of the cylinder (10). A shock absorber, characterized in that (12; 42) is formed respectively.
KR10-2000-0078717A 2000-12-19 2000-12-19 Shock absorber KR100395325B1 (en)

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