KR20000037749A - Damping force variable shock absorber - Google Patents
Damping force variable shock absorber Download PDFInfo
- Publication number
- KR20000037749A KR20000037749A KR1019980052486A KR19980052486A KR20000037749A KR 20000037749 A KR20000037749 A KR 20000037749A KR 1019980052486 A KR1019980052486 A KR 1019980052486A KR 19980052486 A KR19980052486 A KR 19980052486A KR 20000037749 A KR20000037749 A KR 20000037749A
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- KR
- South Korea
- Prior art keywords
- piston
- damping force
- damper
- shock absorber
- operated
- Prior art date
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Classifications
-
- 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
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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
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Description
본 발명은 쇽업소버에 관한 것으로, 더욱 상세하게는 중,저속 구간에서는 감쇠력에 영향을 주지않고 일정 고속이상에서의 댐퍼내 고압이 작동시 제3의 바이패스 유로를 개방하여 통과 유량을 증대시킴에 따라 감쇠력 증가를 완만하게 하여 내구성 및 수명을 크게 연장할 수 있게한 감쇠력 가변형 쇽업소버를 제공함에 있는 것이다.The present invention relates to a shock absorber, and more particularly, in the medium and low speed sections, the third bypass flow path is opened to increase the flow rate when the high pressure in the damper is operated at a constant high speed or more. Accordingly, the present invention is to provide a damping force variable shock absorber that can smoothly increase the damping force and greatly extend the durability and lifespan.
차량용 쇽업소버(shock absorber)는 양단부가 차체와 바퀴에 고정되어 주행중 노면과 접촉하는 바퀴로부터 전달되어지는 각종 진동이나 충격을 재빨리 흡수하여 차체에는 이들 진동이 전달되는 일이 없게함으로써 승차감 및 주행 안전성 향상을 꾀하도록 되어 있다.The shock absorber for the vehicle has both ends fixed to the body and the wheels to quickly absorb various vibrations or shocks transmitted from the wheels that come into contact with the road surface, so that these vibrations are not transmitted to the vehicle body, thereby improving ride comfort and driving safety. It is intended to.
상기한 쇽업소버(100)는 도1에 나타낸 바와 같이 두 개의 원통형의 튜브(내통과 외통)를 이용하여 하나의 댐퍼(70)를 구성하고 상기 댐퍼의 내측에는 공기와 함께 오일을 충진하여 리바운드(Rebound) 행정시 피스톤(10)의 상부측에 위치한 리바운드챔버(40)측 오일이 피스톤(10)에 형성된 오리피스(리바운드유로(14))를 통해 콤프레션챔버측으로 이동하고, 반대로 콤프레션(Compression) 행정시에는 콤프레션챔버(50)의 오일은 다시 피스톤(10)의 오리피스(콤프레션유로(16))를 통해 리바운드챔버(40)로 이동하도록 구성되어 있다.The shock absorber 100 constitutes one damper 70 using two cylindrical tubes (inner and outer cylinder) as shown in FIG. 1, and rebounds by filling oil with air inside the damper. Rebound chamber 40 side oil located on the upper side of the piston 10 moves to the compression chamber side through the orifice (rebound flow passage 14) formed in the piston 10 during the restroke, and on the contrary, the compression During the stroke, the oil in the compression chamber 50 is configured to move back to the rebound chamber 40 through the orifice (compression passage 16) of the piston 10.
이처럼 쇽업소버(100)는 차량 주행시 차체와 연결되는 피스톤로드(20)와 함께 피스톤(10)이 상,하로 리바운드/콤프레션 행정을 할 때 양쪽 챔버(40,50)의 오일이 피스톤(10)의 상,하부측으로 순환 이동하는 것에 의해 일정한 감쇠력을 발생시키도록 되어 있다.In this way, the shock absorber 100 has the piston rod 20 connected to the vehicle body when the vehicle travels, and when the piston 10 rebounds / compresses up and down, oil in both chambers 40 and 50 causes the piston 10 to move. The circular damping force is generated by circulating to the upper and lower sides of the.
종래에는 도2와 3에 도시된 바와 같이 쇽업소버(100)의 바디(60)에 조립되는 디스크-s(64;disc-s), 디스크(62), 피스톤(10)에 형성되는 각각의 유로(14,16)에 의해 댐퍼의 감쇠력을 조정하고, 고속에서의 감쇠력 조절은 피스톤(10)에 형성되는 유로(14,16)의 크기(직경) 변화를 통해 감쇠력을 조절하고 있다.In the related art, respective flow paths formed in the disc-s 64, the disc 62, and the piston 10 assembled to the body 60 of the shock absorber 100, as shown in FIGS. 2 and 3. The damping force of the damper is adjusted by (14, 16), and the damping force adjustment at high speed is controlling the damping force through a change in the size (diameter) of the flow paths 14, 16 formed in the piston 10.
그러나 어느 정도의 고속 이상에서는 댐퍼로 감쇠력을 잡을 필요가 없는 구간이 있게 되는데 도4에 도시된 바와 같이 종래에는 피스톤(10)에 형성되는 오리피스의 특성상 높은 감쇠력이 걸려 이때 발생하는 고온 등으로 댐퍼(70)에 불리한 영향을 끼쳐 내구성 저하의 원인이 되는 등의 문제점을 안고 있었다.However, at some high speed or more, there is a section in which the damper does not need to be held by the damper. However, as shown in FIG. 4, the damper (high damping force) occurs due to the high damping force due to the nature of the orifice formed in the piston 10. 70) adversely affects and causes a decrease in durability.
본 발명에서는 상기한 종래의 문제점을 감안 해소하기 위해 안출된 것으로, 중,저속 구간에서는 감쇠력에 영향을 주지않고 일정 고속이상에서의 댐퍼내 고압이 작동시 유량을 크게하여 감쇠력이 완만하게 증대시킬 수 있도록 된 쇽업소버를 제공함에 있는 것이다.The present invention was devised to solve the above-mentioned conventional problems, and the damping force can be smoothly increased by increasing the flow rate when the high pressure in the damper at a certain high speed or higher operates without affecting the damping force in the medium and low speed sections. Is to provide a shock absorber.
상기한 목적 달성을 위해 본 발명에서는 피스톤(10)과 바디(60)의 피스톤로드(20) 및 핀(30)과의 접촉부(21,31)에 별도의 제3의 유로(12,62)를 추가로 설치하여 일정 고속이상에서의 댐퍼내 고압이 작동시 상기 유로(12,62)를 통해 오일이 흐르도록 유도하여 통과 유량을 증대시키도록 구성됨을 특징으로 하고 있는 것이다.In order to achieve the above object, in the present invention, separate third flow passages 12 and 62 are provided at the contact portions 21 and 31 of the piston rod 20 and the piston rod 20 and the pin 30 of the body 60. In addition, it is characterized in that it is configured to increase the flow rate by inducing oil to flow through the flow path (12,62) when the high pressure in the damper at a predetermined high speed or more is operated.
이하, 첨부된 예시 도면을 참고하여 본 발명의 구성 및 작용 효과 등을 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings illustrating the configuration and operation effects of the present invention.
도1은 쇽업소버의 요부 발췌단면도,1 is a cross-sectional view of the main portion of the shock absorber;
도2는 종래 피스톤밸브의 요부 단면도,2 is a cross-sectional view of main parts of a conventional piston valve;
도3은 종래 바디밸브의 요부 단면도,3 is a sectional view of main parts of a conventional body valve;
도4는 피스톤 속도에 대한 감쇠력 변화 선도,4 is a damping force change diagram with respect to the piston speed,
도5는 본 발명이 적용된 피스톤밸브의 요부 단면도,Figure 5 is a sectional view of the main part of the piston valve to which the present invention is applied,
도6은 본 발명이 적용된 바디밸브의 요부 단면도,Figure 6 is a sectional view of the main part of the body valve to which the present invention is applied;
도7은 본 발명에 따른 피스톤(바디)의 평면도7 is a plan view of a piston (body) according to the invention
도8은 피스톤 속도에 대한 감쇠력 변화 선도,8 is a damping force change diagram with respect to the piston speed,
〈도면의 주요 부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>
10; 피스톤 12,62; 제3의 유로10; Piston 12,62; Third euro
14,16; 오리피스 20: 피스톤로드14,16; Orifice 20: Piston Rod
21,31; 접촉부 30; 핀21,31; Contact 30; pin
40: 리바운드챔버 50:콤프레션 챔버40: rebound chamber 50: compression chamber
60; 바디 62; 디스크60; Body 62; disk
64; 디스크-s 70; 댐퍼64; Disk-s 70; Damper
도5와 6에서와 같이 본 발명은 차체와 바퀴에 고정되게 설치되어 주행중에 노면으로부터 전달되는 진동이나 충격을 흡수하여 승차감 및 주행 안전성 향상을 도모하도록 된 쇽업소버에 있어서, 상기 쇽업소버의 피스톤(10)과 바디(60)의 피스톤로드(20) 및 핀(30)과의 접촉부(21,31)에 일정한 크기로 되는 제3의 유로(12,62)를 추가로 설치하여 중,저속 구간에서는 감쇠력에 영향을 주지않고 일정 고속이상에서의 댐퍼내 고압이 작동시 상기 유로(12,62)를 통해 오일이 흐르게하여 하여 통과 유량을 증대시킴에 따라 완만한 감쇠력을 가질 수 있도록 구성한 것이다.5 and 6, the present invention is fixed to the vehicle body and the wheel is installed in the shock absorber to absorb the vibration or shock transmitted from the road surface while driving to improve the ride comfort and driving safety, the piston of the shock absorber ( 10 and third passages 12 and 62 of constant size are additionally installed in the contact portions 21 and 31 between the piston rod 20 and the pin 30 of the body 60. It is configured to have a gentle damping force as the oil flows through the flow passages 12 and 62 when the high pressure in the damper is operated at a constant high speed or higher without increasing the damping force, thereby increasing the flow rate.
이와 같이 구성된 본 발명의 쇽업소버(100)는 리바운드 행정시 피스톤(10)의 상부측에 위치한 리바운드챔버(40)측 오일이 피스톤(10)에 형성된 오리피스(14)를 통해 콤프레션챔버(50)측으로 이동하고, 반대로 콤프레션 행정시에는 피스톤(10)의 하부측에 위치한 콤프레션챔버(50)의 오일은 다시 피스톤(10)의 오리피스(16)를 통해 리바운드챔버(40)로 순환 이동하는 것에 의해 일정한 감쇠력을 발생시키는 것은 종래와 모두 동일한 것이다.The shock absorber 100 of the present invention configured as described above has a compression chamber 50 through an orifice 14 having oil on the rebound chamber 40 located on the upper side of the piston 10 during the rebound stroke. On the contrary, in the compression stroke, the oil of the compression chamber 50 located on the lower side of the piston 10 is circulated to the rebound chamber 40 through the orifice 16 of the piston 10 again. By generating a constant damping force is the same as in the prior art.
다만, 일정 고속이상에서의 댐퍼내 고압이 작동시에는 댐퍼내의 충진된 고압의 유압에 의해 상기 제3의 유로(12,62)가 개방되게 된다.However, when the high pressure in the damper is operated at a constant high speed or higher, the third flow passages 12 and 62 are opened by the high pressure oil filled in the damper.
이처럼 본 발명은 바디(60)의 디스크-s(64), 디스크(62), 피스톤(10)에 각각 형성되는 오리피스(14,16) 이외에 피스톤로드(20)와 핀(30)이 접촉되는 접촉부(21,31)에 제3의 유로(12,62)를 설치하여 상기 유로(22,62)통해 유압이 빠져나도록 구성됨으로써 도8과 같이 통과 유량이 종래보다 많게 되어 피스톤 속도에 따른 감쇠력 증가가 완만해지게 된다.As described above, the present invention provides a contact portion in which the piston rod 20 and the pin 30 contact each other in addition to the orifices 14 and 16 formed in the disc-s 64, the disc 62, and the piston 10 of the body 60, respectively. By installing the third flow passages 12 and 62 in the 21 and 31, the hydraulic pressure is discharged through the flow passages 22 and 62, so that the flow rate of the passage is higher than that of the conventional art, and the damping force increases according to the piston speed. It will be gentle.
이상에서 설명한 바와 같이 본 발명에 의하면, 기존의 쇽업소버 피스톤(10)과 바디의 피스톤로드(20) 및 핀(30)과의 접촉부에 일정한 크기로 되는 제3의 유로(12,62)를 추가로 설치하여 중,저속 구간에서는 흐르지 아니하고 일정 고속이상에서의 댐퍼내 고압이 작동시에는 상기 제3의 유로(12,62)를 통해 오일이 흐르게하여 통과 유량을 증대시켜 피스톤 속도에 따른 감쇠력 증가를 완만하게 유도하여 감쇠력 증가를 완만하게함으로써 내구성 향상과 더불어 제품의 수명이 크게 연장되는 등의 작용효과가 있는 것이다.As described above, according to the present invention, a third flow path 12 and 62 having a constant size is added to the contact portion between the existing shock absorber piston 10 and the piston rod 20 and the pin 30 of the body. When the high pressure in the damper at a certain high speed is operated, the oil flows through the third flow paths 12 and 62 to increase the passage flow rate, thereby increasing the damping force according to the piston speed. By gently inducing the damping force to increase slowly, the durability and the life of the product is greatly extended.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR10-1998-0052486A KR100415459B1 (en) | 1998-12-02 | 1998-12-02 | Damping Force Variable Shock Absorber |
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KR10-1998-0052486A KR100415459B1 (en) | 1998-12-02 | 1998-12-02 | Damping Force Variable Shock Absorber |
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KR20000037749A true KR20000037749A (en) | 2000-07-05 |
KR100415459B1 KR100415459B1 (en) | 2004-04-21 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100489384B1 (en) * | 2000-12-12 | 2005-05-12 | 주식회사 만도 | Low velocity control piston valve use in a shock absorber |
KR100737150B1 (en) * | 2002-05-23 | 2007-07-06 | 주식회사 만도 | Piston valve use in a shock absorber |
KR100736548B1 (en) * | 2002-02-20 | 2007-07-06 | 주식회사 만도 | Vehicular height adjusting shock absorber |
KR100757808B1 (en) * | 2002-12-16 | 2007-09-11 | 주식회사 만도 | Body valve use in a shock absorber |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS63125240U (en) * | 1987-02-10 | 1988-08-16 |
-
1998
- 1998-12-02 KR KR10-1998-0052486A patent/KR100415459B1/en not_active IP Right Cessation
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100489384B1 (en) * | 2000-12-12 | 2005-05-12 | 주식회사 만도 | Low velocity control piston valve use in a shock absorber |
KR100736548B1 (en) * | 2002-02-20 | 2007-07-06 | 주식회사 만도 | Vehicular height adjusting shock absorber |
KR100737150B1 (en) * | 2002-05-23 | 2007-07-06 | 주식회사 만도 | Piston valve use in a shock absorber |
KR100757808B1 (en) * | 2002-12-16 | 2007-09-11 | 주식회사 만도 | Body valve use in a shock absorber |
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KR100415459B1 (en) | 2004-04-21 |
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