KR20080054456A - Shock absorber of vehicle - Google Patents

Shock absorber of vehicle Download PDF

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Publication number
KR20080054456A
KR20080054456A KR1020060126707A KR20060126707A KR20080054456A KR 20080054456 A KR20080054456 A KR 20080054456A KR 1020060126707 A KR1020060126707 A KR 1020060126707A KR 20060126707 A KR20060126707 A KR 20060126707A KR 20080054456 A KR20080054456 A KR 20080054456A
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South Korea
Prior art keywords
air passage
air
piston
shock absorber
passage
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KR1020060126707A
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Korean (ko)
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성백민
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현대자동차주식회사
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Priority to KR1020060126707A priority Critical patent/KR20080054456A/en
Publication of KR20080054456A publication Critical patent/KR20080054456A/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
    • F16F9/08—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 gas is in a chamber with a flexible wall
    • F16F9/084—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 gas is in a chamber with a flexible wall comprising a gas spring contained within a flexible wall, the wall not being in contact with the damping fluid, i.e. mounted externally on the damper cylinder
    • 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
    • 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
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • 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
    • F16F9/464—Control of valve bias or pre-stress, e.g. electromagnetically
    • 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
    • F16F9/465—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 using servo control, the servo pressure being created by the flow of damping fluid, e.g. controlling pressure in a chamber downstream of a pilot passage

Abstract

A shock absorber of a commercial vehicle is provided to improve safety and riding comfort by actively changing damping force in accordance with increasing load using compression force of an air spring. A shock absorber of a commercial vehicle comprises a piston rod(23), a piston(24), an oil path stopper(40). The piston rod has an air path(23a) to longitudinal direction to receive compressed air from an air spring(10) through an air pipe(30). The piston has an oil path(24a) connecting an upper and a lower chamber(21b,21c), and reciprocally moves along longitudinal direction of a cylinder(21). One end of the oil path stopper is placed in the air path and the other end is placed in the piston. The oil path stopper reciprocally moves according to variation of pressure of the air path, and selectively seals a part of the oil path.

Description

상용차용 쇽업소버{Shock absorber of vehicle}Shock absorber of commercial vehicle

도 1은 본 발명에 따른 쇽업소버의 구성을 설명하기 위한 도면,1 is a view for explaining the configuration of a shock absorber according to the present invention;

도 2는 도1의 작동상태를 보여주기 위한 개략적인 도면이다.Figure 2 is a schematic diagram for showing the operating state of Figure 1;

< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>

10 - 공기스프링 20 - 쇽업소버10-Air spring 20-Shock absorber

21 - 실린더 21b - 상부챔버21-Cylinder 21b-Upper Chamber

21c - 하부챔버 23 - 피스톤로드21c-lower chamber 23-piston rod

23a - 공기통로 23b - 걸림턱부23a-Air passage 23b-Hanging jaw

24 - 피스톤 24a - 오일통로24-piston 24a-oil passage

30 - 공기파이프 40 - 오일통로마개수단30-air pipe 40-oil passage closure means

41 - 공기통로이동부재 42 - 플레이트부재41-Air passage moving member 42-Plate member

43 - 스프링부재43-spring member

본 발명은 상용차용 쇽업소버에 관한 것으로, 특히 차량 하중의 증가에 따라 능동적인 감쇄력의 가변이 가능하도록 하여 안정적인 승차감을 이룩할 수 있도록 하는 상용차용 쇽업소버에 관한 것이다.The present invention relates to a shock absorber for a commercial vehicle, and more particularly, to a shock absorber for a commercial vehicle that can achieve a stable riding feeling by enabling the active damping force to be changed in accordance with the increase of the vehicle load.

일반적으로, 차량의 현가장치(suspension)는 차체와 바퀴를 연결하여 충격력을 흡수함으로써 승차감을 향상시키도록 된 장치이며, 특히 대형 버스 또는 대형 트럭등과 같은 상용차의 현가장치에는 공기스프링(air spring), 쇽업소버(shock absorber), 리프스프링(leaf spring) 등이 함께 포함되어 구성된다.In general, the suspension of the vehicle is a device that is connected to the vehicle body and the wheel to absorb the impact force to improve the ride comfort, in particular, air spring (air spring) in the suspension of commercial vehicles, such as large buses or large trucks , Shock absorber, leaf spring, etc. are included together.

여기서, 상기 공기스프링은 공기의 압축 탄성을 이용하여 노면에 의해 발생된 비교적 큰 힘의 진동과 충격을 흡수하는 역할을 수행하고, 상기 쇽업소버는 비교적 적은 힘을 발휘하는 진동과 충격을 흡수하게 되며, 이 둘은 서로 독립적으로 구성되어 있다.Here, the air spring serves to absorb the vibration and shock of a relatively large force generated by the road surface by using the compressive elasticity of the air, the shock absorber to absorb the vibration and shock exerting a relatively small force The two are independent of each other.

이에 따라, 노면조건이나 또는 적차상태에 따른 큰 하중이 상기 쇽업소버에 걸릴 경우 상기 쇽업소버는 큰 감쇄력을 발휘하지 못하는 구성이기 때문에, 쇽업소버로서의 기능을 전혀 발휘할 수 없는 문제가 발생하거나 또는 심할 경우 파손에 이르는 문제가 있었다.Accordingly, when a large load due to road conditions or loading conditions is applied to the shock absorber, the shock absorber is not configured to exhibit a large damping force. There was a problem leading to breakage.

이에 본 발명은, 공기스프링의 압축력을 이용하여 하중의 증가에 따른 능동적인 감쇄력의 가변이 가능하도록 구조를 개선함으로써 더욱 향상된 성능을 발휘할 수 있도록 함과 더불어 보다 안정적인 승차감을 도모할 수 있도록 하는 상용차용 쇽업소버를 제공함에 그 목적이 있다.Therefore, the present invention, by using the compression force of the air spring to improve the performance by improving the structure to enable the variable of the active damping force according to the increase of the load, and for commercial vehicles that can achieve a more stable ride comfort The purpose is to provide shock absorbers.

상기와 같은 목적을 달성하기 위한 본 발명의 쇽업소버는, 공기파이프를 통해 공기스프링의 압축공기를 공급받도록 된 공기통로가 길이방향을 따라 일직선으 로 관통 형성된 피스톤로드와; 상,하부챔버를 연결하는 오일통로를 구비하고서 실린더의 길이방향을 따라 왕복이동이 가능하도록 설치된 피스톤과; 일단은 상기 공기통로내에 위치하고 타단은 상기 피스톤내에 위치하도록 설치되는 한편 상기 공기통로의 압력변화에 따라 왕복 이동하면서 상기 오일통로를 선택적으로 부분 밀폐시키도록 동작하는 오일통로마개수단;을 포함하여 구성됨을 특징으로 한다.The shock absorber of the present invention for achieving the above object comprises a piston rod formed in a straight line through the air passage through which the compressed air of the air spring is supplied through the air pipe; A piston having an oil passage connecting upper and lower chambers and installed to reciprocate along the longitudinal direction of the cylinder; And an oil passage plug means, one end of which is disposed in the air passage and the other end of which is located in the piston, and which is operable to selectively partially seal the oil passage while reciprocating according to the pressure change of the air passage. It features.

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

도 1은 본 발명에 따른 쇽업소버의 구성을 설명하기 위한 도면이다.1 is a view for explaining the configuration of a shock absorber according to the present invention.

대형 버스 또는 대형 트럭등과 같은 상용차의 현가장치에는 도 1과 같이 공기스프링(10) 및 쇽업소버(20)가 함께 포함되어 구성되는 바, 상기 쇽업소버(20)는 본 발명에 따라 공기스프링(10)과 공기파이프(30)를 통해 연결되어 압축공기를 통해 감쇄력을 능동적으로 변화시킬 수 있는 구성으로 되어 있다.Suspension device of a commercial vehicle such as a large bus or a large truck is configured to include an air spring 10 and a shock absorber 20 as shown in Figure 1, the shock absorber 20 is an air spring ( 10) is connected to the air pipe 30 is configured to actively change the damping force through the compressed air.

즉, 본 발명의 쇽업소버(20)는 하단의 부싱(21a)을 통해 현가장치의 구성요소에 결합되어 설치되는 실린더(21)와, 상기 실린더(21)를 감싸면서 상단의 부싱(22a)을 통해 차체측으로 연결되도록 설치되는 실린더커버(22)와, 상기 실린더커버(22)의 상측 끝에 일단이 결합되고 타단은 상기 실린더(21)내에 위치하도록 설치되는 일자막대 형상의 피스톤로드(23)와, 상기 실린더(21)내에 위치한 피스톤로드(23)의 끝에 일체로 결합되면서 바깥 둘레면이 상기 실린더(21)의 내경과 기밀을 유지하도록 설치되는 한편 상기 실린더커버(22)의 이동에 연동하여 상기 실린더(21)를 따라 직선왕복 이동하는 피스톤(24)을 포함하여 구성된다.That is, the shock absorber 20 of the present invention is coupled to the cylinder 21 and installed to the components of the suspension through the bushing (21a) of the lower end, while wrapping the cylinder 21 and the upper bushing (22a) A cylinder cover 22 is installed to be connected to the vehicle body side through, the one end is coupled to the upper end of the cylinder cover 22 and the other end is installed in the cylinder 21, the rod-shaped piston rod 23, The outer circumferential surface is integrally coupled to the end of the piston rod 23 located in the cylinder 21 so as to maintain the inner diameter and the airtightness of the cylinder 21 while interlocking with the movement of the cylinder cover 22. And a piston 24 linearly reciprocating along (21).

여기서, 상기 실린더(21)는 상기 피스톤(24)에 의해 상부챔버(21b)와 하부챔버(21c)로 구획되는 구조이다.Here, the cylinder 21 is a structure that is divided into an upper chamber 21b and a lower chamber 21c by the piston 24.

그리고, 상기 피스톤(24)에는 상기 상,하부챔버(21b,21c)를 연통하는 오일통로(24a)가 형성된 구조이다.In addition, the piston 24 has a structure in which an oil passage 24a communicating with the upper and lower chambers 21b and 21c is formed.

한편, 피스톤로드(23)의 내부에는 피스톤로드(23)의 길이방향을 따라 일직선의 형태로서 상기 피스톤로드(23)를 관통하는 공기통로(23a)가 형성되는 바, 상기 공기통로(23a)의 한쪽 끝은 상기 공기파이프(30)를 통해 공기스프링(10)의 압축공기를 공급받도록 된 구조이다.Meanwhile, an air passage 23a penetrating the piston rod 23 is formed in a straight line in the piston rod 23 in the longitudinal direction of the piston rod 23. One end is configured to receive compressed air of the air spring 10 through the air pipe 30.

또한, 본 발명은 상기 공기통로(23a)내에 일단이 위치하고 상기 피스톤(24)내에 타단이 위치하도록 설치되는 오일통로마개수단(40)을 포함하여 구성된다.In addition, the present invention comprises an oil passage plug means 40 is installed so that one end is located in the air passage (23a) and the other end is located in the piston (24).

상기 오일통로마개수단(40)은 상기 공기통로(23a)의 압력변화에 따라 공기통로(23a)를 직선왕복 이동하면서 상기 오일통로(24a)를 선택적으로 부분 밀폐시키는 역할을 수행하게 된다.The oil passage plug means 40 serves to selectively partially seal the oil passage 24a while linearly reciprocating the air passage 23a according to the pressure change of the air passage 23a.

여기서, 상기 오일통로마개수단(40)은, 바깥 둘레면이 상기 공기통로(23a)와 접촉을 이루면서 기밀을 유지하도록 설치되는 한편 상기 공기통로(23a)의 압력변화에 따라 공기통로(23a)를 직선왕복 이동하는 공기통로이동부재(41)와, 상기 피스톤(24)내에 위치하도록 상기 공기통로이동부재(41)와는 연결로드(42)를 통해 연결되어 설치되는 한편 공기통로이동부재(41)에 연동하여 상기 오일통로(24a)를 선택적으로 부분 밀폐시키는 플레이트부재(43)와, 상기 공기통로이동부재(41)와 상기 플레이트부재(43)사이에 위치하면서 한쪽 끝단이 상기 공기통로이동부재(41)를 탄 력적으로 지지할 수 있게 설치되는 스프링부재(44)로 구성된다.Here, the oil passage plug means 40 is installed so that the outer circumferential surface is in contact with the air passage (23a) to maintain the airtight while the air passage (23a) in accordance with the pressure change of the air passage (23a) The air passage movement member 41, which is linearly reciprocated, and the air passage movement member 41 are installed and connected to the air passage movement member 41 so as to be located in the piston 24. A plate member 43 for selectively partially sealing the oil passage 24a in conjunction with the air passage movement member 41 and the plate member 43 and having one end thereof is the air passage movement member 41. It is composed of a spring member 44 is installed to be able to support elastically.

또한, 상기 피스톤(24)측으로 연결되는 공기통로(23a)의 한쪽 끝단에는 상기 피스톤로드(23)에서 공기통로(23a)의 안쪽으로 돌출되는 걸림턱부(23b)가 일체로 형성되고, 상기 걸림턱부(23b)에는 스프링부재(44)의 반대쪽 끝단이 탄력적으로 지지되어 설치되는 구조이다.In addition, one end of the air passage 23a connected to the piston 24 side is integrally formed with a locking jaw portion 23b protruding from the piston rod 23 to the inside of the air passage 23a. 23b is a structure in which the opposite end of the spring member 44 is elastically supported and installed.

즉, 상기 스프링부재(44)의 일단은 상기 공기통로이동부재(41)의 밑면에 지지되어 설치되고 상기 스프링부재(44)의 타단은 상기 걸림턱부(23b)상에 지지되어 설치되는 구조인 것이다.That is, one end of the spring member 44 is supported and installed on the bottom surface of the air passage movement member 41, and the other end of the spring member 44 is supported and installed on the locking jaw portion 23b. .

이하, 본 발명의 작용 및 효과에 대해 설명한다.Hereinafter, the operation and effects of the present invention will be described.

먼저, 공기스프링(30)으로부터 압축공기를 전달받지 않음으로 인해 오일통로마개수단(40)의 이동이 발생하지 않는 정상상태의 쇽업소버(20)는 도 1과 같은 상태이며, 이 상태에서의 쇽업소버(20)는 비교적 적은 힘의 진동과 충격을 흡수하면서 승차감의 향상에 일조하게 된다.First, the shock absorber 20 in the normal state in which the movement of the oil passage plug means 40 does not occur due to not receiving the compressed air from the air spring 30 is in the state as shown in FIG. The absorber 20 helps to improve the riding comfort while absorbing vibration and shock of relatively small force.

즉, 상대적으로 적은 하중의 힘이 차체에 전달되면 공기스프링(30)이 작동하지 않기 때문에 상기 공기스프링(30)의 압축공기는 공기통로(23a)로 전달되지 않게 된다.That is, when a relatively small load force is transmitted to the vehicle body, the air spring 30 does not operate so that the compressed air of the air spring 30 is not transmitted to the air passage 23a.

이에 따라, 차체에 전달된 적은 힘의 하중은 속업소버(20)의 자체적인 운동(길이변화에 따른 운동)의해 진동과 충격을 흡수하면서 승차감의 향상에 일조하게 된다.Accordingly, the small force load transmitted to the vehicle body contributes to the improvement of ride comfort while absorbing vibration and shock by the internal movement of the speed absorber 20 (movement according to the length change).

한편, 차체로 전달되는 하중이 비교적 큰 하중이면 공기스프링(30)의 압축운 동에 의해 이때의 하중을 1차적으로 감쇄시키게 되고, 동시에 속업소버(20)의 작동에 의해 2차적으로 감쇄시키게 된다.On the other hand, if the load transmitted to the vehicle body is a relatively large load, the load at this time is primarily attenuated by the compression operation of the air spring 30, and at the same time, the second is attenuated by the operation of the speed absorber 20. .

즉, 공기스프링(30)의 압축에 공기파이프(30)로 빠져나간 압축공기는 공기통로(23a)를 통해 공기통로이동부재(41)로 전달되며, 이 힘을 전달받은 공기통로이동부재(41)는 스프링부재(44)의 탄성력을 이기면서 도 2와 같이 공기통로(23a)를 따라 하강이동을 하게 된다.That is, the compressed air that has escaped to the air pipe 30 by the compression of the air spring 30 is transferred to the air passage moving member 41 through the air passage 23a, and the air passage moving member 41 receives this force. ) Is to move down along the air passage (23a) as shown in Figure 2 while winning the elastic force of the spring member (44).

그리고, 공기통로이동부재(41)가 하강이동을 하면 이에 연동하여 플레이트부재(43)가 하강하게 되고, 이로 인해 피스톤(24)에 형성된 오일통로(24a)는 상기 플레이트부재(43)가 하강 이동한 만큼 통로의 면적이 줄어들게 된다.In addition, when the air passage moving member 41 moves downward, the plate member 43 is lowered in association with this movement. As a result, the oil passage 24a formed on the piston 24 moves downward. The area of the passage is reduced by one.

이와 같이, 오일통로(24a)의 면적이 줄어든 상태에서 피스톤(24)이 실린더(21)를 따라 직선왕복 이동하게 되면, 상기 오일통로(24a)를 통해 상,하부챔버(21b,21c)로 이동하는 오일의 감쇄력은 도 1의 상태보다 대폭 커지게 된다.As such, when the piston 24 is linearly reciprocated along the cylinder 21 while the area of the oil passage 24a is reduced, the piston 24 moves to the upper and lower chambers 21b and 21c through the oil passage 24a. The damping force of the oil is significantly larger than the state of FIG.

이 결과, 본 발명의 쇽업소버(20)는 차체로 전달되는 비교적 큰 하중도 효과적으로 감쇄시킬 수 있게 됨으로써 승차감의 향상 및 차량의 안정성에 큰 도움을 줄 수 있게 되는 것이다.As a result, the shock absorber 20 of the present invention can effectively attenuate even a relatively large load delivered to the vehicle body, thereby greatly improving the riding comfort and stability of the vehicle.

한편, 차체로 전달된 큰 하중이 효과적으로 감쇄되어 적은 하중으로 변화되거나 또는 없어지게 되면, 압축된 상태의 공기스프링(30)은 도 1과 같이 최초의 상태로 복귀하게 되고, 동시에 하강 이동한 상태의 오일통로마개수단(40)은 스프링부재(44)는 탄력적으로 복원에 의해 도 1과 같은 최초의 상태로 복귀하여 다음번의 작동을 준비하게 된다.On the other hand, when a large load transmitted to the vehicle body is effectively attenuated and changed or disappeared with a small load, the compressed air spring 30 returns to the initial state as shown in FIG. 1 and simultaneously moves downward. Oil passage stopper means 40 is the spring member 44 is elastically restored to the initial state as shown in Figure 1 to prepare for the next operation.

이상 설명한 바와 같이 본 발명에 의한 쇽업소버는, 차체로 전달된 하중의 크기에 따라 능동적인 감쇄력을 발휘할 수 있게 됨으로써, 승차감의 향상 및 주행중인 차량의 안정성을 보다 향상시킬 수 있는 효과가 있게 된다.As described above, the shock absorber according to the present invention can exert an active damping force according to the magnitude of the load transmitted to the vehicle body, thereby improving the riding comfort and the stability of the running vehicle.

Claims (3)

공기파이프(30)를 통해 공기스프링(10)의 압축공기를 공급받도록 된 공기통로(23a)가 길이방향을 따라 일직선으로 관통 형성된 피스톤로드(23)와;A piston rod 23 through which the air passage 23a through which the compressed air of the air spring 10 is supplied through the air pipe 30 is formed to penetrate in a straight line along the longitudinal direction; 상,하부챔버(21b,21c)를 연결하는 오일통로(24a)를 구비하고서 실린더(21)의 길이방향을 따라 왕복이동이 가능하도록 설치된 피스톤(24)과;A piston (24) having an oil passage (24a) connecting the upper and lower chambers (21b, 21c) to be reciprocated along the longitudinal direction of the cylinder (21); 일단은 상기 공기통로(23a)내에 위치하고 타단은 상기 피스톤(24)내에 위치하도록 설치되는 한편 상기 공기통로(23a)의 압력변화에 따라 왕복 이동하면서 상기 오일통로(24a)를 선택적으로 부분 밀폐시키도록 동작하는 오일통로마개수단(40);One end is installed in the air passage (23a) and the other end is installed in the piston 24 to selectively seal the oil passage (24a) while reciprocating according to the pressure change of the air passage (23a) An oil passage plug means 40 in operation; 을 포함하여 구성됨을 특징으로 하는 상용차용 쇽업소버.Shock absorber for commercial vehicles, characterized in that configured to include. 청구항 1에 있어서, 상기 오일통로마개수단(40)은,The method of claim 1, wherein the oil passage plug means 40, 바깥 둘레면이 상기 공기통로(23a)와 접촉을 이루면서 기밀을 유지하도록 설치되는 한편 상기 공기통로(23a)의 압력변화에 따라 공기통로(23a)를 직선왕복 이동하는 공기통로이동부재(41)와;The outer circumferential surface is installed to maintain the airtight while making contact with the air passage (23a) and the air passage moving member 41 for linearly reciprocating the air passage (23a) in accordance with the pressure change of the air passage (23a) ; 상기 피스톤(24)내에 위치하도록 상기 공기통로이동부재(41)와는 연결로드(42)를 통해 연결되어 설치되는 한편 공기통로이동부재(41)에 연동하여 상기 오일통로(24a)를 선택적으로 부분 밀폐시키는 플레이트부재(43)와;The air passage moving member 41 is installed and connected to the air passage moving member 41 so as to be located in the piston 24. The oil passage 24a is selectively partially sealed in conjunction with the air passage moving member 41. Plate member 43 and the; 상기 공기통로이동부재(41)와 상기 플레이트부재(43)사이에 위치하면서 한쪽 끝단이 상기 공기통로이동부재(41)를 탄력적으로 지지할 수 있게 설치되는 스프링부재(44);A spring member (44) positioned between the air passage member (41) and the plate member (43) so that one end thereof can elastically support the air passage member (41); 로 구성됨을 특징으로 하는 상용차용 쇽업소버.Shock absorber for commercial vehicles, characterized in that consisting of. 청구항 2에 있어서, 상기 피스톤(24)측으로 연결되는 공기통로(23a)의 한쪽 끝단에는 상기 피스톤로드(23)에서 공기통로(23a)의 안쪽으로 돌출되는 걸림턱부(23b)가 일체로 형성되고, 상기 걸림턱부(23b)에는 스프링부재(44)의 반대쪽 끝단이 탄력적으로 지지되어 설치되는 것을 특징으로 하는 상용차용 쇽업소버.The method of claim 2, wherein one end of the air passage (23a) connected to the piston 24 side is formed integrally with the locking projection 23b protruding inward of the air passage (23a) from the piston rod 23, Shock absorber for a commercial vehicle, characterized in that the opposite end of the spring member 44 is elastically supported on the locking jaw (23b) is installed.
KR1020060126707A 2006-12-13 2006-12-13 Shock absorber of vehicle KR20080054456A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101364452B1 (en) * 2010-12-10 2014-02-27 주식회사 만도 Shock absorber system and its controlling method
KR102417921B1 (en) * 2022-04-01 2022-07-05 임인기 Shock absorber for vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101364452B1 (en) * 2010-12-10 2014-02-27 주식회사 만도 Shock absorber system and its controlling method
KR102417921B1 (en) * 2022-04-01 2022-07-05 임인기 Shock absorber for vehicle

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