KR100268092B1 - Shock absorber tuning device - Google Patents

Shock absorber tuning device Download PDF

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Publication number
KR100268092B1
KR100268092B1 KR1019970060548A KR19970060548A KR100268092B1 KR 100268092 B1 KR100268092 B1 KR 100268092B1 KR 1019970060548 A KR1019970060548 A KR 1019970060548A KR 19970060548 A KR19970060548 A KR 19970060548A KR 100268092 B1 KR100268092 B1 KR 100268092B1
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South Korea
Prior art keywords
piston rod
cam
shock absorber
piston
piston head
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KR1019970060548A
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Korean (ko)
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KR19990040224A (en
Inventor
현영진
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정몽규
현대자동차주식회사
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Priority to KR1019970060548A priority Critical patent/KR100268092B1/en
Publication of KR19990040224A publication Critical patent/KR19990040224A/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
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • F16F9/348—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
    • F16F9/3484—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body characterised by features of the annular discs per se, singularly or in combination
    • 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
    • F16F9/3207—Constructional features
    • 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
    • F16F9/348—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
    • F16F9/3481—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body characterised by shape or construction of throttling passages in piston
    • 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
    • F16F2230/00—Purpose; Design features
    • F16F2230/0052—Physically guiding or influencing
    • F16F2230/0064—Physically guiding or influencing using a cam
    • 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
    • F16F2230/00—Purpose; Design features
    • F16F2230/0052—Physically guiding or influencing
    • F16F2230/0076—Pivoting

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

Abstract

PURPOSE: A tuning device of a shock absorber is provided to vary a diameter of an oil passage and a hole scale of a disc for low and middle speed, through only rotation of a piston rod without disassembly of a shock absorber from a vehicle, so tuning work is simplified. CONSTITUTION: A sub-motor(2) is mounted in a cylinder to be movable up and down and connected with a piston rod(1) in order to rotate the piston rod. A piston head(3) is inserted into the sub-motor and forms several oil passages(3a). A cam(4) is formed with a part of the piston rod, which inserted into the piston head, as one body. Several storage holes are connected with the oil passages. A valve plate(5) is contained in the storage hole and opens and shuts the oil passage. Two disc(6,7) are different for a diameter and forms several holes in the circumference, being positioned in the upper of the piston head. Elliptic hole(6a,7a) are formed for the piston rod to penetrate the disc. Projections(6b,7b), which are formed in the reverse side of the disc hole, are moved horizontally for each disc to cross paths in the motion of the piston rod.

Description

쇽업소버 튜닝장치Shock absorber tuning device

본 발명은 쇽업소버의 튜닝장치에 관한 것으로, 특히 쇽업소버의 피스톤로드에 연결된 서보 모우터를 회전시키면 모우터에 의해 밸브판이 직선이동하면서 피스톤헤드에 형성되어 있는 오일통로의 직겨을 가변시킴과 더불어 디스크의 상대운동으로 쇽업소버를 간단하면서도 편리하게 튜닝시킬 수 있도록 된 쇽업소버 튜닝장치에 관한 것이다.The present invention relates to a tuning device of a shock absorber, and in particular, when the servo motor connected to the piston rod of the shock absorber is rotated, the valve plate is linearly moved by the motor to change the straight path of the oil passage formed in the piston head. The present invention relates to a shock absorber tuning device in which a shock absorber can be tuned simply and conveniently by the relative motion of a disk.

일반적으로 차량의 현가장치는 차축과 차체를 연결하여 주행중에 차축이 노면으로부터 받는 진동이나 충격을 차체에 직접적으로 전달되지 않도록 제어하여 차체와 화물의 손상을 방지하고 승차감을 좋게 만드는 장치로서 노면으로부터 충격을 완화시키는 섀시 스프링과, 섀시 스프링의 자유진동을 제어하여 승차감을 좋게 하는 쇽업소버 및 차량의 롤링을 방지하는 스태빌라이저 등으로 구성된다.In general, the suspension of the vehicle is connected to the axle and the body so that the vibration or shock received from the road surface is not directly transmitted to the body while driving, thereby preventing damage to the body and cargo and improving ride comfort. It consists of a chassis spring for mitigating, a shock absorber for controlling the free vibration of the chassis spring to improve the ride comfort, and a stabilizer for preventing rolling of the vehicle.

여기서 상기 쇽업소버는 차량의 주행중 스프링이 받는 충격에 의해 발생하는 고유진동을 흡수하여 진동을 빨리 감쇠시켜 승차감을 좋게하기 위한 것으로서, 상하운동에너지를 열에너지로 바꾸는 작용을 하고, 그 방식에 따라 고체 마찰식과 유압식이 있지만, 일반적으로 유압식이 많이 사용되며, 또 작동상으로는 신장시에 감쇠력을 발휘하는 단동식과, 신장시와 압축시에 모두 감쇠력을 발휘하는 복동식이 있다.Wherein the shock absorber is to absorb the natural vibration generated by the impact of the spring while driving the vehicle to attenuate the vibration quickly to improve the ride comfort, and to change the up and down kinetic energy into thermal energy, according to the method of solid friction Although there are formulas and hydraulics, in general, hydraulics are commonly used, and in operation, there are single-acting expressions that exhibit damping force at the time of stretching and double-acting expressions that exhibit damping force at both expansion and compression.

도 1은 상기와 같은 종래 유압식 쇽업소버의 피스톤헤드부위를 단면으로 도시한 것이고, 도 2는 그 분리사시도인 바, 즉 실린더(101)내에서 상하로 이동가능하게 설치된 피스톤로드(102)의 하단부에는 피스톤헤드(102)가 너트를 매개로 체결되어 있고, 상기 피스톤헤드(103)의 하부에는 오목한 수용홈이 형성되면서 이 수용홈속에 리테이너(104)와 다수장의 중속 디스크(105) 및 한 장의 저속 디스크(106)가 각각 순차적으로 끼워져 수용되게 되며, 상기 피스톤헤드(103)의 상부에는 리테아니(106)와 와셔(107) 및 베이스 리테이너(108)가 각각 순차적으로 적층되어 있다.1 is a cross-sectional view of the piston head portion of the conventional hydraulic shock absorber as described above, Figure 2 is a separate perspective view, that is, the lower end of the piston rod 102 installed to move up and down in the cylinder 101 The piston head 102 is fastened through a nut, and a recessed receiving groove is formed in the lower portion of the piston head 103, and the retainer 104, the plurality of medium speed disks 105, and one low speed in the receiving groove. The disks 106 are inserted and accommodated sequentially, respectively, and the upper part of the piston head 103 is a litter 106, a washer 107, and a base retainer 108.

여기서 상기 피스톤헤드(103)에는 상하로 관통하는 다수개의 오일통로(103a)가 형성되어 있고, 상기 저속 디스크(106)의 워주면에는 안쪽으로 만입된 다수개의 홈(106a)이 형성되어, 상기 피스톤로드가 승강운동을 할 때에 피스톤헤드에 의해 구획지워진 상부 오일체임버와 하부 오일체임버내의 오일이 상기 피스톤헤드에 형성되어 있는 오일통로를 통해 교류되면서 감쇄력을 발생시키게 되어 있다.Here, the piston head 103 is formed with a plurality of oil passages 103a penetrating up and down, and a plurality of grooves 106a indented inward are formed on the warp surface of the low speed disk 106, and the piston When the rod moves up and down, the oil in the upper oil chamber and the lower oil chamber partitioned by the piston head are exchanged through the oil passage formed in the piston head to generate attenuation force.

그리고 상기 피스톤이 왕복운동을 할 때에 피스톤의 운동속도가 저속일 때에는 상기 저속 디스크(106)가 댐핑력을 발생시키는 반면에 중속으로 운동할 때에는 상기 다수장의 중속 디스크(105)가 댐핑력을 발생시키며, 피스톤로드가 고속으로 운동할 때에는 상기 피스톤헤드에 형성된 오일통로가 댐핑력을 발생시키게 되어 있다.When the piston is reciprocating, the low speed disk 106 generates a damping force when the piston's movement speed is low, while the medium speed disk 105 generates a damping force when the piston moves at medium speed. When the piston rod moves at a high speed, the oil passage formed in the piston head generates a damping force.

이에 따라 상기 저속 디스크에 형성되어 있는 홈의 크기와 개수, 중속 디스크의 개수 및 피스톤헤드에 형성되어 있는 오일통로의 직경이 쇽업소버의 튜닝요소가 된다.Accordingly, the tuning element of the shock absorber is the size and number of grooves formed in the low speed disk, the number of medium speed disks, and the diameter of the oil passage formed in the piston head.

그런데 종래의 쇽업소버구조에서는 튜닝시에 쇽업소버를 탈거해서 각 디스크의 형상과 개수 및 피스톤의 오일통로를 변경시켜야 하므로, 튜닝작업이 번거럽고 시간이 많이 소요되므로 튜닝작업이 비효율적인 결점이 있었다.However, in the conventional shock absorber structure, it is necessary to remove the shock absorber during tuning to change the shape and number of each disk and the oil passage of the piston.

이에 본 발명은 상기한 결점을 해소하기 위해 안출된 것으로, 쇽업소버를 차량으로부터 탈거할 필요가 없이 서보 모우터를 이용해서 피스톤로드를 회전시켜주면 피스톤헤드의 오일통로의 직경이 가변될 뿐만 아니라 저.중속을 담당하는 디스크의 홀 크기가 가변되므로 튜닝작업이 극히 간단하면서도 용이하게 이루어질 수 있도록 된 쇽업소버 튜닝장치를 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the above-described drawbacks, and the diameter of the oil passage of the piston head is not only variable when the piston rod is rotated using the servo motor without having to remove the shock absorber from the vehicle. The purpose of the present invention is to provide a shock absorber tuning device in which the hole size of the disk in charge of medium speed is variable so that the tuning operation can be made extremely simple and easy.

도 1은 종래 기술에 따른 쇽업소버의 피스톤헤드부 단면도이고,1 is a cross-sectional view of the piston head of the shock absorber according to the prior art,

도 2는종래 기술에 따라 쇽업소버를 튜닝하는 데에 사용되는 피스톤과 디스크의 분리사시도,2 is an exploded perspective view of a piston and a disk used to tune a shock absorber in accordance with conventional techniques;

도 3은 본 발명에 따른 쇽업소버 튜닝장치의 단면도이다.3 is a cross-sectional view of the shock absorber tuning device according to the present invention.

〈 도면의 주요 부분에 대한 부호의 설명 〉<Description of the code | symbol about the principal part of drawing>

1-피스톤로드 2-서보 모우터1-piston road 2-servo motor

3-피스톤헤드 4-캠3-piston head 4-cam

5-밸브판 6,7-디스크5-valve plate 6,7-disc

상기한 바의 목적을 달성하기 위한 본 발명은, 실린더내에서 상하로 이동가능하게 설치된 피스톤로드를 회전시키기 위해 피스톤로드에는 서보 모우터가 연결되고, 이 서보 모우터에 다수개의 오일통로를 가진 피스톤헤드가 일체로 회전되지 않도록 끼워지며, 이 피스톤헤드에 끼워지는 피스톤로드의 소정부위에는 캠이 일체로 형성되고, 이 캠이 자유로이 회전할 수 있도록 캠과 대향하는 피스톤헤드의 내주면에는 원주방향으로 홈이 형성되며, 상기 각 오일통로와 연통되게 반경방향으로 다수개의 수용구멍이 형성되고, 이 수용구멍에는 상기 캠에 의해 전후로 이동되어 상기 오일통로를 개폐시키는 일정 길이를 가진 밸브판이 설치되며, 원주면에 다수개의 홀이 형성된 직경이 각기 다른 2장의 디스크가 상기 피스톤헤드의 윗쪽 피스톤로드에 끼워지고, 각 디스크에는 피스톤로드가 관통되게 끼워질 수 있도록 타원형상의 구멍이 형성되며, 상기 피스톤로드에는 각 디스크의 구멍 내주면과 접촉되게 서로 반대방향으로 돌기가 형성되어 피스톤로드의 회전운동시에 상기 각 디스크가 엇갈리도록 수평방향으로 이동시키게 되어 있다.The present invention for achieving the above object, the piston rod is connected to the piston rod to rotate the piston rod installed to move up and down in the cylinder, the piston having a plurality of oil passages in the servo motor The head is fitted so as not to rotate integrally, and a cam is integrally formed at a predetermined portion of the piston rod fitted to the piston head, and the groove is circumferentially formed on the inner circumferential surface of the piston head facing the cam so that the cam can rotate freely. And a plurality of receiving holes are formed in a radial direction so as to communicate with each of the oil passages, and the receiving holes are provided with valve plates having a predetermined length to move the oil passages back and forth by the cam to open and close the oil passages. Two discs of different diameters with a plurality of holes formed in the upper piston rod of the piston head Each disc has an elliptical hole so that the piston rod can be inserted therethrough, and the piston rod has protrusions formed in opposite directions to contact the inner circumferential surface of the hole of each disc, so that each of the discs can be rotated. The disk is moved horizontally to stagger.

이하 본 발명의 실시예를 첨부된 예시도면을 참조로 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 3은 본 발명에 따른 쇽업소버 튜닝장치의 단면도인 바, 즉 실린더내에서 상하로 이동가능하게 설치되는 피스톤로드(1)에는 서보 모우터(2)의 회전력을 전달받아 회전될 수 있도록 서보 모우터(2)가 연결되어 있고, 상기 피스톤로드의 길이방향을 따라 소정부위에는 피스톤헤드(3)가 피스톤로드와 함께 회전되지 않도록 끼워져 있으며, 상기 피스톤헤드(3)에는 다수개의 오일통로(3a)가 형성되어 있다.Figure 3 is a cross-sectional view of the shock absorber tuning device according to the present invention, that is, the piston rod (1) installed to move up and down in the cylinder to the servo motor so that it can be rotated by receiving the rotational force of the servo motor (2) The rotor 2 is connected, and the piston head 3 is fitted in a predetermined portion along the longitudinal direction of the piston rod so as not to rotate together with the piston rod, and the oil passage 3a is provided in the piston head 3. Is formed.

그리고 상기 피스톤헤드에 끼워지는 피스톤로드의 소정부위에는 캠(4)이 일체로 형성되어 있고, 이 캠(4)이 자유로이 회전할 수 있도록 캠과 대향하는 피스톤헤드의 내주면에는 원주방향으로 홈이 형성됨과 더불어 상기 각 오일통로와 연통되는 다수개의 수용구멍이 피스톤헤드를 가로지르는 방향으로 형성되어 있다.The cam 4 is integrally formed at a predetermined portion of the piston rod fitted to the piston head, and a groove is formed in the circumferential direction of the inner circumferential surface of the piston head facing the cam so that the cam 4 can freely rotate. In addition, a plurality of receiving holes communicating with each of the oil passages is formed in a direction crossing the piston head.

또 상기 각 수용구멍에는 일정 길이를 가진 밸브판(5)이 캠에 의해 전후로 이동가능하게 삽입되어, 상기 캠이 회전되면 캠과 접촉되어 있는 상기 밸브판들이 각각 수용구멍속에서 전진되어 상기 오일통로의 일부를 막아주게 되어 있다.In addition, a valve plate 5 having a predetermined length is inserted into each of the receiving holes so as to be movable back and forth by a cam. When the cam is rotated, the valve plates in contact with the cam are advanced in the receiving holes, respectively. It is supposed to block some of the.

그러므로 상기 서보 모우터를 회전시키면 모우터에 의해 상기 캠이 함께 회전되게 되고, 이 캠의 회전운동으로 캠과 접촉되어 있는 각 밸브판들이 상기 수용구멍속에서 오일통로쪽으로 향하여 이동되면서 오일통로를 일부를 막아주게 되므로, 오일통로의 직경을 용이하게 가변시킬 수 있게 된다.Therefore, when the servo motor is rotated, the cam is rotated together by the motor, and each valve plate in contact with the cam is moved toward the oil passage in the receiving hole by the rotational movement of the cam. Since it prevents the, it is possible to easily change the diameter of the oil passage.

따라서 상기 서보 모우터를 작동시키는 것 만으로 고속영역에서의 튜닝작업이 극히 용이하면서 간단하게 이루어질 수 있게 되는 것이다.Therefore, the tuning operation in the high speed range is extremely easy and simple by simply operating the servo motor.

한편 상기 피스톤헤드의 상부에는 직경이 각기 다른 2장의 디스크(6,7)이 각각 끼워져 있고, 각 디스크(6,7)에 피스톤로드가 끼워지는 구멍(6a,7a)은 타원형상으로 형상됨과 더불어 상기 구멍의 내주면에 접촉하는 돌기(6b,7b)가 피스톤로드의 외주면에 서로 반대방향으로 형성되어 있으며, 상기 각 디스크의 원주면에는 다수개의 홀(6c,7c)이 각각 형성되어 있다.On the other hand, two disks 6 and 7 of different diameters are fitted in the upper portion of the piston head, and the holes 6a and 7a in which the piston rods are fitted into the disks 6 and 7 are formed in an elliptical shape. Projections 6b and 7b in contact with the inner circumferential surface of the hole are formed on the outer circumferential surface of the piston rod in opposite directions, and a plurality of holes 6c and 7c are formed in the circumferential surface of each disk, respectively.

이에 따라 상기 피스톤로드를 서보 모우터로 회전시키면 상기 돌기가 피스톤로드와 함께 회전되게 되는 데, 이 돌기의 회전운동은 상기 각 디스크에 전달되어, 각 디스크는 회전되면서 상기 돌기와 타원형 구멍의 상호작용으로 피스톤로드에 수직한 방향으로 이동되게 된다.Accordingly, when the piston rod is rotated by the servo motor, the protrusion is rotated together with the piston rod, and the rotational movement of the protrusion is transmitted to each of the discs, and each disc is rotated, thereby interacting with the protrusion and the elliptical hole. It is moved in the direction perpendicular to the piston rod.

그리고 상기 각 돌기는 서로 각 변위를 두고 형성되어 있기 때문에 각 디스크가 이동하는 방향은 서로 다르게 되는 데, 이에 따라 상기 서보 모우터를 회전시키면 2장의 디스크가 서로 엇갈리게 되고, 각 디스크가 서로 엇갈리게 되면 각 디스크에 형성되어 있는 홀의 크기가 가변되어 지므로, 중.저속 영역에서 댐핑력을 튜닝하기가 극히 용이하게 되는 것이다.And because the projections are formed with each displacement to each other, the direction of movement of each disk is different from each other. Accordingly, when the servo motor is rotated, the two disks are staggered, if each disk is staggered each other Since the size of the holes formed in the disk is variable, it is extremely easy to tune the damping force in the medium and low speed region.

이상 설명한 바와 같이 본 발명에 따른 쇽업소버 튜닝장치에 의하면, 단지 서보 모우터를 회전시키는 것 만으로 각 디스크의 홀 크기와 피스톤헤드의 오일통로 직경을 용이하게 가변시킬 수 있으므로, 쇽업소버를 튜닝하기 위해 차량으로부터 탈거할 필요가 없이 극히 용이하면도 간단하게 쇽업소버를 튜닝할 수 있는 효과가 있다.As described above, according to the shock absorber tuning device according to the present invention, since the hole size of each disc and the oil passage diameter of the piston head can be easily changed by simply rotating the servo motor, It is very easy to tune the shock absorber even if it is extremely easy without having to remove it from the vehicle.

Claims (2)

실린더내에서 상하로 이동가능하게 설치된 피스톤로드를 회전시키기 위해 피스톤로드에 연결된 서보 모우터와, 이 서보 모우터에 일체로 회전되지 않도록 끼워지면서 다수개의 오일통로가 형성된 피스톤헤드, 이 피스톤헤드에 끼워지는 피스톤로드의 소정부위에 일체로 형성된 캠, 이 캠이 자유로이 회전할 수 있도록 캠과 대향하는 피스톤헤드의 내주면에는 원주방향으로 형성된 홈, 상기 각 오일통로와 연통되게 반경방향으로 형성된 다수개의 수용구멍, 이 수용구멍에 수용되면서 상기 캠에 의해 전후로 이동되어 상기 오일통로를 개폐시키는 일정 길이를 가진 밸브판, 상기 피스톤헤드의 상부에 배열되면서 원주면에는 다수개의 홀이 형성된 직경이 각기 다른 2장의 디스크, 각 디스크에 피스톤로드가 관통되게 끼워질 수 있도록 형성된 타원형상의 구멍 및, 상기 피스톤로드에 각 디스크의 구멍 내주면과 접촉되게 서로 반대방향으로 형성되어 피스톤로드의 회전운동시에 상기 각 디스크가 엇갈리도록 수평방향으로 이동시키는 돌기를 갖춘 쇽업소버 튜닝장치.A servo motor connected to the piston rod for rotating the piston rod installed to move up and down in the cylinder, and a piston head having a plurality of oil passages inserted therein so as not to rotate integrally with the servo motor. A cam formed integrally with a predetermined portion of the losing piston rod, a groove formed in a circumferential direction on an inner circumferential surface of the piston head facing the cam so that the cam can freely rotate, and a plurality of receiving holes formed radially in communication with the respective oil passages. A valve plate having a predetermined length to be moved back and forth by the cam to be opened and closed by the cam while being accommodated in the receiving hole, and two discs having different diameters having a plurality of holes formed on the circumferential surface while arranged on an upper portion of the piston head. Elliptical shape so that the piston rod can be inserted through each disc Hole, and, shock absorber tuning the device in contact with the inner peripheral surface of each disk, the hole in the piston rod are each formed in the opposite direction ridorok intersect each disk at the time of the rotational movement of the piston rod with a projection which moves in the horizontal direction. 제 1 항에 있어서, 상기 캠이 한쪽 방향으로 갈수록 점차적으로 돌출되게 형성된 것을 특징으로 하는 쇽업소버 튜닝장치.The shock absorber tuning device according to claim 1, wherein the cam is formed to protrude gradually in one direction.
KR1019970060548A 1997-11-17 1997-11-17 Shock absorber tuning device KR100268092B1 (en)

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