KR0143808B1 - Shock absorber - Google Patents

Shock absorber

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Publication number
KR0143808B1
KR0143808B1 KR1019950018199A KR19950018199A KR0143808B1 KR 0143808 B1 KR0143808 B1 KR 0143808B1 KR 1019950018199 A KR1019950018199 A KR 1019950018199A KR 19950018199 A KR19950018199 A KR 19950018199A KR 0143808 B1 KR0143808 B1 KR 0143808B1
Authority
KR
South Korea
Prior art keywords
damping force
inner tube
oil
shock absorber
piston rod
Prior art date
Application number
KR1019950018199A
Other languages
Korean (ko)
Other versions
KR970000637A (en
Inventor
조상범
Original Assignee
정몽원
만도기계주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 정몽원, 만도기계주식회사 filed Critical 정몽원
Priority to KR1019950018199A priority Critical patent/KR0143808B1/en
Publication of KR970000637A publication Critical patent/KR970000637A/en
Application granted granted Critical
Publication of KR0143808B1 publication Critical patent/KR0143808B1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/44Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction

Abstract

본 발명은 피스톤로드의 이동속도가 저속인 구간에서 감쇠력을 조정하여 승차감을 높히는 감쇠력 조정식 쇽업소버에 관한 것으로, 특히 피스톤로드가 저속으로 압출될 때는 내측튜브에 혈성된 통공을 통해 내측튜브의 오일이 외측튜브로도 유출되도록 하여 감쇠력이 작게 조정되는 감쇠력 조정식 쇽업소버에 관한 것이다.The present invention relates to a damping force adjustable shock absorber that adjusts the damping force in the low speed section of the piston rod to increase the ride comfort, in particular, when the piston rod is extruded at a low speed, the oil of the inner tube through the through hole formed in the inner tube. A damping force adjustable shock absorber in which the damping force is adjusted so as to flow out to the outer tube as well.

종래 쇽업소버의 메인피스톤 밸브에서는 피스톤(3)의 통공(5)을 통해 오일이 유출되면서 디스크(4)를 통과할 때에 감쇠력이 발생되는데, 상기 구조에서는 피스톤로드(6)가 저속으로 미세이동되는 저속구간에서는 승차감이 다소 딱딱하게 되는 문제점이 있었으나, 본 발명에서는 내측튜브 중간부위에 통공을 형성하여 내측튜브의 오일이 외측튜브로 별도로 유출 가능토록 해서 저속구간에서의 감쇠력이 낮게 조정되고 승차감은 상승토록 하였으며, 상기 내측튜브 외주상에는 체크밸브 역할을 하는 오일가이드판을 상기 통공 사이에 부착하여 외측튜브 내의 오일이 내측튜브내로 역류됨을 방지하므로 균일하고 단계적인 감쇠력 조정이 이루어지도록 하였다.In the main piston valve of the conventional shock absorber, damping force is generated when the oil passes through the through-hole 5 of the piston 3 and passes through the disk 4. In the above structure, the piston rod 6 is micro-moved at a low speed. In the low-speed section, the ride comfort was somewhat hardened, but in the present invention, the through-hole is formed in the middle of the inner tube so that oil in the inner tube can flow out to the outer tube separately so that the damping force in the low-speed section is adjusted and the ride comfort is increased. The oil guide plate acting as a check valve is attached between the through holes on the outer circumference of the inner tube to prevent oil in the outer tube from flowing back into the inner tube so that a uniform and stepped damping force is adjusted.

Description

감쇠력 조정식 쇽업소버Damping force adjustable shock absorber

제1도는 본 발명에 의한 쇽업소버의 측단면도,1 is a side cross-sectional view of the shock absorber according to the present invention;

제2도는 종래 기술에 의한 쇽업소버의 측단면도,2 is a side cross-sectional view of a shock absorber according to the prior art,

제3도는 본 발명에 의한 쇽업소버의 작동상태도로서3 is an operating state diagram of a shock absorber according to the present invention.

(a)는 압축행정 초기상태를 도시한 작동상태도,(a) is an operating state diagram showing the initial state of the compression stroke,

(b)는 압축행정 중기상태를 도시한 작동상태도,(b) is an operating state diagram showing the intermediate state of the compression stroke,

(c)는 압축행정 종기상태를 도시한 작동상태도,(c) is an operating state showing the compression stroke boil state,

(d)는 신장행정 상태를 도시한 작동상태도,(d) is an operating state diagram showing an extended stroke state,

제4도는 본 발명에 의한 쇽업소버의 감쇠력 특성도이다.4 is a damping force characteristic diagram of a shock absorber according to the present invention.

*도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1:외측튜브 2:내측튜브1: Outer Tube 2: Inner Tube

3:피스톤 4:디스크3: piston 4: disc

5:통공 6:피스톤로드5: Through 6: Piston Rod

7:오일 8,8':통공7: oil 8,8 ': via

9:오일가이드판 10:메인밸브9: Oil guide plate 10: Main valve

11:바디밸브 12:O-링11: Body valve 12: O-ring

본 발명은 피스톤로드의 이동속도가 저속인 구간에서는 감쇠력을 조정하여 승차감을 높히는 감쇠력 조정식 쇽업소버에 관한 것으로, 특히 피스톤로드가 저속으로 압축될 때는 내측튜브에 형성된 통공을 통해 내측튜브의 오일이 외측튜브로도 유출되도록 하여 감쇠력이 작게 조정되는 감쇠력 조정식 쇽업소버에 관한 것이다.The present invention relates to a damping force adjustable shock absorber that improves ride comfort by adjusting the damping force at a low speed section of the piston rod, in particular, when the piston rod is compressed at a low speed, oil in the inner tube is formed through a through hole formed in the inner tube. It relates to a damping force adjustable shock absorber that is allowed to flow out to the outer tube so that the damping force is adjusted small.

종래의 쇽업소버는 제2도에 도시된 바와 같이, 오일이 채워진 내측튜브(2)와 외측튜브(1) 및 상기 내측튜브(2) 내에서 왕복이동하며 상, 하단에 디스크(4)가 접설되고 길이방향으로 통공(5)이 형성된 피스톤(3) 및 상기 피스톤과 연결된 피스톤로드(6)등으로 구성된다.Conventional shock absorbers, as shown in Figure 2, the oil-filled inner tube (2) and outer tube (1) and the inner tube (2) reciprocating and the disk 4 is attached to the upper and lower ends And a piston 3 having a through hole 5 in the longitudinal direction, and a piston rod 6 connected to the piston.

상기 구조의 쇽업소버에서는 감쇠력이 상기한 피스톤(3)의 통공(5)을 통해 오일이 유출되면서 디스크(4)를 통과할 때에 발생되는데, 피스톤로드(6)가 중, 고속으로 이동딜 때에는 충분한 감쇠력을 갖도록 할 수 있으므로 안정성을 높일 수 있으나, 피스톤로드(6)가 저속으로 이동될 때에는 감쇠력을 충분히 낮게 조정하는 것이 어려우므로, 상기한 저속구간에서는 승차감이 다소 딱딱하게 되는 문제점이 있었다.In the shock absorber of the above structure, damping force is generated when the oil passes through the disk 4 as the oil flows out through the through hole 5 of the piston 3, and the piston rod 6 is sufficient to move at a medium or high speed. Since the damping force can be increased, the stability can be increased. However, when the piston rod 6 is moved at a low speed, it is difficult to adjust the damping force sufficiently low, so that the riding comfort becomes somewhat hard in the low speed section.

이상과 같은 문제점을 해결하기 위해 본 발명에서는 상기한 저속구간외에서는 종전과 동일한 충분한 감쇠력을 유지하면서, 저속간에서는 감쇠력이 낮게 조정되도록 하여 양호한 승차감을 얻을 수 있게 되는 감쇠력 조정식 쇽업소버를 제작하는데 그 목적이 있는 것이며, 그 해결방안으로 내측튜브 중간부위에 통공을 형성하여 내측튜브의 오일이 외측튜브로 별도로 유출 가능토록해서 저속구간에서의 감쇠력이 낮게 조정되고 승차감은 상승토록 하였다. 또한, 상기 내측튜브 외주상에는 체크밸브 역할을 하는 오일드가이드판을 상기 통공 사이에 부착하여 외측튜브 내의 오일이 내측튜브내로 역류됨을 방지하므로 균일하고 단계적인 감쇠력 조정이 이루어지도록 하였다.In order to solve the above problems, the present invention manufactures a damping force adjustable shock absorber which can obtain a good ride feeling by adjusting the damping force low at low speed while maintaining the same sufficient damping force as before in the low speed section. As a solution, a hole was formed in the middle of the inner tube so that the oil in the inner tube could flow out to the outer tube separately, so that the damping force in the low speed section was adjusted to be low and the ride comfort was increased. In addition, an oil guide plate serving as a check valve is attached between the through holes on the inner circumference of the inner tube to prevent oil in the outer tube from flowing back into the inner tube so that a uniform and stepped damping force is adjusted.

첨부된 도면에 의해 상세히 설명하면 다음과 같다.When described in detail with the accompanying drawings as follows.

제1도에서 보면, 내측튜브(2) 및 외측튜브(1)와 하단에 피스톤(3)이 결합되고 상기 내측튜브(2)내에서 왕복운동하는 피스톤로드(6)등으로 구성된 공지의 쇽업소버에 있어서, 상기 내측튜브(2)의 중강부위에 길이방향으로 일정간격 만큼 떨어진 통공(8,8')이 형성되고, 상기 통공(8,8')을 통해 외측튜브(1) 내의 오일이 내측튜브(2)내로 역류됨을 방지하기 위해 체크밸브 기능을 하는 오일 가이드판(9)이 내측튜브(2) 외주상에 착설된다. 또한, 상기 가이드판(9)은 O-링(12)등에 의해 상기 내측튜브(2)상에 고정된다.As shown in FIG. 1, a known shock absorber comprising an inner tube 2, an outer tube 1, and a piston 3 coupled to the lower end and a piston rod 6 reciprocating in the inner tube 2, and the like. In the medium tube portion of the inner tube (2) is formed in the through hole spaced apart by a predetermined interval in the longitudinal direction (8, 8 '), the oil in the outer tube (1) through the through hole (8, 8') An oil guide plate 9 serving as a check valve is mounted on the outer circumference of the inner tube 2 in order to prevent backflow into the tube 2. In addition, the guide plate 9 is fixed on the inner tube 2 by an O-ring 12 or the like.

이와 같이 구성된 본 발명의 감쇠력 조정식 쇽업소버는 다음과 같이 작동된다.The damping force adjustable shock absorber of the present invention configured as described above operates as follows.

강기 피스톤로드(6)가 압축이동되는 초기에는 제3도(a)에 도시된 바와 같이 내측튜브(2) 상에서 오일가이드판(9)이 벌어지고, 통공(8,8')을 통해 내측튜브(2)내의 오일(7)이 외측튜브(2)내로 유출되므로 감쇠력이 제4도에서 A로 도시된 바와 같이 종래 쇽업소버에 비해 크게 하강조정되며, 상기 피스톤로드(6)가 더 이동되어 제3도(b)의 위치에 오면 통공(8')만을 통해서 오일이 유출되므로 제4도에서 B로 도시된 바와 같이 감쇠력이 약간 상승조정된다.In the initial stage of the compression movement of the steel piston rod 6, the oil guide plate 9 is opened on the inner tube 2 as shown in FIG. 3 (a), and the inner tube is formed through the through holes 8 and 8 '. Since oil (7) in (2) flows out into the outer tube (2), the damping force is greatly lowered and adjusted as compared with the conventional shock absorber, as shown by A in FIG. 4, and the piston rod (6) is moved further. At the position of 3 degrees (b), the oil flows out through only the through hole 8 ', so that the damping force is slightly adjusted upward as shown by B in FIG.

다시 상기 피스톤로드(6)가 하강되어 제3도(c)의 위치까지 오게 되면 상기 통공(8,8')을 통한 외측튜브(1)로의 오일 유출이 발생되지 않아서 오일 가이드판(9)이 상기 내측튜브(2)면에 착설되고 상기 통공(8,8')을 통한 외측튜브(1)로의 오일 유출이 발생되지 않으므로 제4도에서 C로 도시된 바와 같이 감쇠력이 완전히 상승되어 종래의 쇽업소버와 동일한 감쇠력을 갖게된다.When the piston rod 6 is lowered and comes to the position of FIG. 3 (c), oil leakage to the outer tube 1 through the through holes 8 and 8 'does not occur, so that the oil guide plate 9 is The damping force is completely raised, as shown by C in FIG. 4, since the oil is discharged from the inner tube 2 to the outer tube 1 through the through holes 8 and 8 '. It has the same damping force as the absorber.

또한, 상기 피스톤로드(6)가 신장이동될때에는 상기 바디밸브(11)가 감쇠력을 발생하므로, 주로 상기 바디밸브(11)를 통해 다량의 오일이 유입되고 제3도(d)에 도시된 바와 같이 상기 통공(8,8')을 통한 오일유출이 없어서, 제4도에서 D로 도시된 바와 같이, 종래 쇽업소버에서와 동일한 감쇠력을 가지게 된다.In addition, since the body valve 11 generates a damping force when the piston rod 6 is extended and moved, a large amount of oil is mainly introduced through the body valve 11 and as shown in FIG. As such, there is no oil leakage through the through holes 8 and 8 ', and as shown in FIG. 4, it has the same damping force as in the conventional shock absorber.

이와 같이 본 발명은 내측튜브 중간부위에 형성된 통공(8,8')에 의해 내측튜브(2)로 부터 외측튜브(1)로의 오일의 흐름을 별도로 제어할 수 있게 되므로, 피스톤로드(6)가 저속으로 미세 이동되는 구간에서는 상기 통공(8,8')을 통해 오일 유출이 많아져서 감쇠력이 작아지고 승차감이 좋아질 뿐만 아니라, 상기 오일 가이드판(9)에 의해 외측튜브(1)로 부터 내측튜브(2)로의 역류는 방지되므로 균일하고 단계적인 감쇠력 조정이 이루어지게 되는 유용한 발명이다.As described above, the present invention enables to control the flow of oil from the inner tube 2 to the outer tube 1 separately by the through holes 8 and 8 'formed at the inner portion of the inner tube. In the section of fine movement at low speed, the oil outflow is increased through the through holes 8 and 8 ', so that the damping force is reduced and the riding comfort is improved, and the inner tube from the outer tube 1 is provided by the oil guide plate 9. Since backflow to (2) is prevented, it is a useful invention that uniform and stepped damping force adjustment is made.

Claims (1)

내측튜브(2) 및 외측튜브(1)와 하단에 피스톤(3)이 결합되고 상기 내측튜브(2)내에서 왕복운동하는 피스톤로드(6)등으로 구성된 공지의 쇽업소버에 있어서, 상기 내측튜브(2)의 중간부위에 길이방향으로 일정간격 만큼 떨어진 통공(8,8')이 형성되고, 상기 통공(8,8')을 통해 외측튜브(1)내의 오일이 내측튜브(2)내로 역류됨을 방지하기 위해 체크밸브 기능을 하는 오일 가이드판(9)이 내측튜브(2) 외주상에 착설된 것을 특징으로 하는 감쇠력 조정식 쇽업소버.In the known shock absorber composed of an inner tube (2) and an outer tube (1) and a piston (3) coupled to the lower end and reciprocating in the inner tube (2), the inner tube is known. Through holes 8 and 8 'are formed in the middle of (2) spaced apart by a predetermined distance in the longitudinal direction, and the oil in the outer tube 1 flows back into the inner tube 2 through the through holes 8 and 8'. A damping force adjustable shock absorber, characterized in that the oil guide plate (9) functioning as a check valve is installed on the outer circumference of the inner tube (2) to prevent it.
KR1019950018199A 1995-06-29 1995-06-29 Shock absorber KR0143808B1 (en)

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KR1019950018199A KR0143808B1 (en) 1995-06-29 1995-06-29 Shock absorber

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KR0143808B1 true KR0143808B1 (en) 1998-08-01

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160073823A (en) 2014-12-17 2016-06-27 주식회사 엘지화학 Mixed catalytic composition comprising two transition metal compounds and method of preparing olefin-based copolymer using the same
KR20160084101A (en) 2015-01-05 2016-07-13 주식회사 엘지화학 Method of preparing olefin-based copolymer and olefin-based polymer prepared thereby

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160073823A (en) 2014-12-17 2016-06-27 주식회사 엘지화학 Mixed catalytic composition comprising two transition metal compounds and method of preparing olefin-based copolymer using the same
KR20160084101A (en) 2015-01-05 2016-07-13 주식회사 엘지화학 Method of preparing olefin-based copolymer and olefin-based polymer prepared thereby

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