KR200157034Y1 - Oil and gas leakage preventing oil seal structure of shock absorber - Google Patents

Oil and gas leakage preventing oil seal structure of shock absorber Download PDF

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Publication number
KR200157034Y1
KR200157034Y1 KR2019970011442U KR19970011442U KR200157034Y1 KR 200157034 Y1 KR200157034 Y1 KR 200157034Y1 KR 2019970011442 U KR2019970011442 U KR 2019970011442U KR 19970011442 U KR19970011442 U KR 19970011442U KR 200157034 Y1 KR200157034 Y1 KR 200157034Y1
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KR
South Korea
Prior art keywords
oil
oil seal
gas
packing case
shock absorber
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KR2019970011442U
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Korean (ko)
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KR19980066947U (en
Inventor
정성웅
진재영
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박문규
주식회사기아정기
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Priority to KR2019970011442U priority Critical patent/KR200157034Y1/en
Publication of KR19980066947U publication Critical patent/KR19980066947U/en
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Publication of KR200157034Y1 publication Critical patent/KR200157034Y1/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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/908—Seal for use in rotating and reciprocating arrangement

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

본 고안은 쇽 업소오버의 오일 및 가스 누유방지용 오일시일 구조에 관한 것으로서 더욱 상세하게는 쇽 업소오버의 실린더 내부로 채워지는 오일이나 가스의 누유를 방지하도록 피스톤로드(100)의 외주면(110)으로 설치되어 패킹케이스(Packing Case)와 면접촉하는 오일시일(200)의 외경(210)으로 상,하에 위치하도록 돌기부(220),(220a)를 형성하여 피스톤로드(100)의 상하직선운동시 패킹케이스와 오일시일(200)의 면접촉에 의하여 1차실링을 이루고 패킹케이스와 오일시일(200)의 돌기부(220),(220a)가 2차실링을 이루어 실린더 내부의 오일이나 가스가 패킹케이스 방향으로 누유되는 것을 방지하도록 한 것이다.The present invention relates to an oil seal structure for preventing oil and gas leakage of shock absorbers, and more particularly, to the outer circumferential surface 110 of the piston rod 100 to prevent leakage of oil or gas filled into the cylinder of shock absorbers. It is installed to form the projections 220, 220a to be positioned up and down by the outer diameter 210 of the oil seal 200 in surface contact with the packing case (Packing Case) packing during the vertical movement of the piston rod 100 The primary seal is formed by the surface contact between the case and the oil seal 200, and the protrusions 220 and 220a of the packing case and the oil seal 200 form the secondary seal so that oil or gas inside the cylinder is directed to the packing case. It is to prevent leakage.

Description

쇽 업소오버의 오일 및 가스 누유방지용 오일시일 구조오일 Oil seal construction for oil and gas leakage prevention

본 고안은 쇽 업소오버의 오일 및 가스 누유방지용 오일시일에 관한 것으로서 더욱 상세하게는 차량의 불규칙한 노면이나 도로 주행중 스프링이 받는 충격에 의하여발생하는 고유진동을 흡수하도록 실린더 내부로 유입된 오일의 유압이나 가스의 가스압에 의하여 상하직선운동을 하는 피스톤에 고정설치되어 차축과 연결된 피스톤로드가 상하직선운동을 할 때 실린더 내부의 오일이 패킹케이스의 방향으로 오일이나 가스가 누유되는 것을 방지하도록 완전한 실링을 이루도록 하는 쇽 업소오버의 오일 및 가스 누유방지용 오일시일 구조에 관한 것이다.The present invention relates to an oil seal for preventing oil and gas leakage of shock absorbers. More specifically, the hydraulic pressure of oil introduced into a cylinder to absorb natural vibrations caused by an irregular road surface of a vehicle or an impact of a spring while driving on a road. It is fixed to the piston which moves up and down by the gas pressure of gas so that when the piston rod connected to the axle moves up and down, the oil inside the cylinder is completely sealed to prevent oil or gas from leaking in the direction of the packing case. 쇽 relates to an oil seal structure for preventing oil and gas leakage of a business.

일반적으로 쇽 업소오버는 자동차의 주행중 스프링이 받는 충격에 의해 발생하는 고유진동을 흡수하여 진동을 빨리 감쇠시킴으로서 승차감을 향상시키도록 한것으로서 쇽 업소오버의 내부로 채워져 있는 오일의 유압에 의하여 상하직선운동을 하는 피스톤에 고정설치되어 차축과 연결된 피스톤로드가 상하직선운동을 할 때 피스톤로드의 상하직선운동으로 발생하는 에너지를 열에너지로 바꾸는 작용을 하게된다.In general, shock absorber absorbs natural vibrations caused by the impact of springs while driving the vehicle to quickly attenuate vibration to improve ride comfort. When the piston rod connected to the axle is fixed up and down linearly, the energy generated by the up and down linear movement of the piston rod is converted into thermal energy.

따라서 이와 같이 피스톤에 고정설치되어 차축과 연결설치된 피스톤로드의 상하직선운동시 쇽 업소오버 내부로 채워진 오일이나 가스의 누유를 방지하도록 함으로서 쇽 업소오버의 내부의 일정한 가스압이나 유압이 작용하도록 오일시일이 설치되어 있는바 상기의 종래 업소오버의 오일이나 가스의 누유를 방지하도록 설치되는 오일시일의 구조를 첨부된 도면에 의거하여 상세하게 설명하면 다음과 같다.Therefore, the oil seal is fixed to the piston to prevent leakage of oil or gas filled inside the shock absorber during vertical movement of the piston rod connected to the axle. The structure of the oil seal which is provided to prevent the leakage of oil or gas of the conventional business over bar is described in detail with reference to the accompanying drawings as follows.

제1도는 종래 쇽 업소오버의 오일시일 구조를 보인 단면도로서 쇽 업소오버의 실린더 내부로 채워진 오일이나 가스의 누유를 방지하도록 피스톤로드(10)의 외주면(11)에 상부가 더스트(Dust)측 립(Lip)부의 보강스프링(40)에 지지되고 하부가 오일측 립부의 보강스프링(40a)에 지지되어 내부에 오일시일(20)의 변형을 방지하도록 변형방지용철판(30)이 삽입설치된 오일시일(20)이 설치되고 상기 오일시일(20)과 면접촉하여 실린더 내부의 오일이나 가스가 누유되지 않도록 패킹케이스가 설치되어 있다.1 is a cross-sectional view showing an oil seal structure of a conventional shock absorber. The upper portion of the upper portion is formed on the outer circumferential surface 11 of the piston rod 10 to prevent leakage of oil or gas filled into the cylinder of the shock absorber. The oil seal, which is supported by the reinforcement spring 40 of the Lip part and the lower part is supported by the reinforcement spring 40a of the oil side lip part, is installed therein to prevent deformation of the oil seal 20 therein. 20) is installed and the packing case is installed so that the oil or gas in the cylinder is not leaked by the surface contact with the oil seal (20).

따라서 이와 같이 이루어지는 종래 쇽 업소오버의 오일시일 구조는 자동차의 불규칙한 노면이나 도로 주행중 쇽 업소오버의 스프링이 충격을 흡수하게 되고 이와 동시에 차축과 연결설치되어 쇽 업소오버의 내부로 설치된 피스톤에 고정설치된 피스톤로드(10)가 신축과 압축을 반복하면서 스프링으로 전달되는 충격에 의하여 발생하는 고유진동을 흡수하게 된다.Therefore, the conventional oil seal structure of the shock absorber is a piston which is fixed to the piston installed inside the shock absorber by being connected to the axle by the spring of the shock absorber absorbing the shock during irregular road surface of the car or on the road. The rod 10 absorbs the natural vibration generated by the shock transmitted to the spring while repeating expansion and contraction.

이때 쇽 업소오버의 실린더 내부로 채워진 오일의 유압이나 가스압에 의하여 피스톤이 반복하여 상하직선운동을 하는데 이는 피스톤에 형성된 가이드공을 통하여 오일이나 가스가 유동하면서 피스톤이 실린더 내부의 유압이나 가스압에 의하여 반복운동을 하는 것으로서 이하 같은 피스톤의 반복적인 상하직선운동으로 인하여 스프링으로 전달된 진동을 빠른 속도로 감쇠시켜 승차감을 좋게 한 것이다.At this time, the piston repeatedly moves up and down by the hydraulic or gas pressure of the oil filled into the cylinder of the gasoline. This is repeated by the hydraulic or gas pressure inside the cylinder while oil or gas flows through the guide hole formed in the piston. By doing the movement as follows, the vibrations transmitted to the spring are attenuated at high speed due to the repetitive up and down linear movement of the piston, thereby improving the riding comfort.

또한 상기의 피스톤로드(10)가 상하직선운동시 실린더 내부의 오일이나 가스가 피스톤의 가이드공을 통하여 이동시 오일이나 가스가 패킹케이스 방향으로 이동하는데 이와 동시에 피스톤로드(10)의 외주면(11)으로 패킹케이스에 면접촉하여 삽입설치된 오일시일(20)이 쇽 업소오버의 실린더 내부로 채워진 오일이나 가스의 누유를 방지하여 쇽 업소오버의 실린더 내부의 일정한 유압이나 가스압을 유지하도록 한다.In addition, when the piston rod 10 moves up and down linearly, oil or gas moves in the direction of the packing case when the oil or gas inside the cylinder moves through the guide hole of the piston, and at the same time, to the outer circumferential surface 11 of the piston rod 10. The oil seal 20 installed in contact with the packing case to prevent leakage of oil or gas filled into the cylinder of the shock absorber to maintain a constant hydraulic pressure or gas pressure inside the cylinder of the shock absorber.

그러나 이와 같은 종래의 오일시일구조는 피스톤로드의 상하직선운동시 오일시일과 패킹케이스가 1차적인 실링구조로 이루어져 있어 오일이나 가스가 오일시일과 패킹케이스가 접촉하는 면접촉부에서 패킹케이스 방향을 오일이나 가스가 누유되어 쇽 업소오버의 실린더 내부의 일정한 유압이나 가스압을 유지하지 못하는 문제점이 있었다.However, the conventional oil seal structure has a sealing structure in which the oil seal and the packing case are the primary sealing structure in the vertical movement of the piston rod, so that the oil or gas is directed toward the packing case at the surface contact portion where the oil seal and the packing case come into contact with each other. However, there is a problem in that gas is leaked and thus it is impossible to maintain a constant hydraulic pressure or gas pressure inside the cylinder of the shock absorber.

본 고안은 이와 같은 종래 문제점들을 개선하기 위하여 안출한 것으로서 본 고안의 목적은 피스톤로드의 외주면으로 쇽 업소오버의 실린더 내부로 채워진 오일이나 가스의 누유를 방지하도록 설치하는 오일시일의 외경으로 패킹케이스와 면접촉하도록 오일시일의 외경으로 상하에 위치하도록 돌기부를 형성하여 피스톤로드의 상하직선운동시 오일시일과 패킹케이스에서 1차실링을 이루고 다시 패킹케이스와 면접촉하는 오일시일의 돌기부에서 2차실링을 이루도록 함으로서 쇽 업소오버의 실린더 내부로 채워진 오일이나 가스가 누유되는 것을 방지하도록 하는 쇽 업소오버의 오일 및 가스 누유방지용 오일시일 구조를 제공하는데 있다.The present invention was devised to improve such conventional problems, and an object of the present invention is to provide a packing case with an outer diameter of an oil seal installed to prevent leakage of oil or gas filled into the cylinder of the shock absorber to the outer circumferential surface of the piston rod. The protrusion is formed up and down by the outer diameter of the oil seal so as to be in surface contact, so that the primary seal is formed in the oil seal and the packing case during the vertical movement of the piston rod, and the second seal is formed in the protrusion of the oil seal which is in surface contact with the packing case. It is to provide an oil seal structure for preventing oil and gas leakage of the shock absorber to prevent the oil or gas filled into the cylinder of the shock absorber to leak.

제1도는 종래 쇽 업소오버의 오일시일 구조를 보인 단면도.1 is a cross-sectional view showing an oil seal structure of a conventional shock absorber.

제2도는 본 고안의 구조를 보인 단면도.2 is a cross-sectional view showing the structure of the present invention.

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

100 : 피스톤로드 110 : 외주면100: piston rod 110: outer peripheral surface

200 : 오일시일 210 : 외경200: oil seal 210: outer diameter

220,220a : 돌기부 300 : 변형방지용철판220,220a: protrusion 300: deformation preventing steel plate

400,400a : 보강스프링400,400a: reinforcement spring

이하, 본 고안을 첨부된 도면에 의거하여 그 기술적 구성을 더욱 상세하게 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings of the present invention in more detail the technical configuration as follows.

제2도는 본 고안의 구조를 보인 단면도로서, 쇽 업소오버의 실린더 내부로 채워진 오일이나 가스의 누유를 방지하도록 피스톤로드(100)의 외주면(110)에 상부가 더스트측 립부의 보강스프링(400)에 지지되고 하부가 오일측 립부의 보강스프링(400)에 지지되어 내부로 열에 의한 변형을 방지하도록 변형방지용철판(300)이 삽입설치된 오일시일(200)이 패킹케이스와 면접촉하도록 설치되어 있는 쇽 업소오버에 있어서, 상기 패킹케이스와 면접촉하는 오일시일(200)의 외경(210)으로 돌기부(220),(220a)를 형성하는 것을 특징으로 한다.2 is a cross-sectional view showing the structure of the present invention, the upper portion on the outer circumferential surface 110 of the piston rod 100 to prevent leakage of oil or gas filled into the cylinder of the shock-absorber (400) The oil seal 200 having the lower side supported by the reinforcing spring 400 of the oil side lip part and inserted into the packing case so that the deformation preventing iron plate 300 is inserted therein to prevent deformation by heat. In the business over, the protrusions 220 and 220a are formed by the outer diameter 210 of the oil seal 200 in surface contact with the packing case.

또한 상기 돌기부(220),(220a)는 패킹케이스와 면접촉하는 오일시일(200)의 외경(210)으로 상,하에 위치하도록 형성하는 것을 특징으로 한다.In addition, the protrusions 220 and 220a may be formed to be positioned above and below the outer diameter 210 of the oil seal 200 which is in surface contact with the packing case.

이와 같이 구성하는 본 고안은 자동차의 불규칙한 노면이나 도로 주행중 쇽 업소오버의 스프링이 충격을 흡수하고 상기 스프링이 받는 충격에 의하여 발생하는 고유진동을 쇽 업소오버의 실린더 내부로 실린더의 내부로 채워진 오일에 의한 유압이나 가스에 의한 가스압에 의하여 차축과 연결설치된 피스톤로드(100)가 피스톤에 연동되어 상하직선운동을 하게 되는데 이때 피스톤은 실린더 내부의 가스나 오일이 유동가능하도록 가이드공이 형성되어 있어 상기 가이드공을 통하여 오일이나 가스가 유동하면서 피스톤이 상하직선운동을 반복적으로 이루어 스프링에 전달되는 충격에 의하여 발생하는 고유진동을 빠른 속도로 흡수하여 진동을 빠른 속도로 감쇠시키게 된다.The present invention is constructed in such a way that the spring of the shock absorber absorbs the shock during the irregular road surface of the car or the road and absorbs the natural vibration generated by the shock received by the spring. Piston rod 100 connected to the axle by the hydraulic pressure or gas pressure by the gas is interlocked with the piston to move up and down linearly at this time, the piston is formed in the guide hole to allow the gas or oil in the cylinder to flow As the oil or gas flows through the piston, the piston moves up and down linearly repeatedly to absorb the natural vibration generated by the shock transmitted to the spring at a high speed to attenuate the vibration at a high speed.

한편 상기 피스톤에 고정설치되어 피스톤과 함께 상하직선운동을 하는 피스톤로드(100)가 상하직선운동시 피스톤의 가이드공을 통하여 유동된 가스나 오일은 내부의 유압이나 가스압에 의하여 외부로 방출하려는 힘이 작용하는데 이때 피스톤로드(100)의 외주면(110)에 면접촉하여 설치된 오일시일(200)이 패킹케이스와 면접촉함으로서 쇽 업소오버의 실린더 내부로 채워진 오일이나 가스가 누유되는 것을 방지한다.On the other hand, the gas or oil flowing through the guide hole of the piston when the piston rod 100, which is fixed to the piston and moves up and down linearly together with the piston, is discharged to the outside by internal hydraulic pressure or gas pressure. At this time, the oil seal 200 installed in surface contact with the outer circumferential surface 110 of the piston rod 100 is in surface contact with the packing case to prevent leakage of oil or gas filled into the cylinder of the shock absorber.

이때 오일시일(200)은 피스톤로드(100)의 신축과 압축시 실린더 내부의 오일이나 가스가 피스톤로드(100)의 운동에 의하여 패킹케이스의 방향으로 진행하게 되는 피스톤을 통과한 오일은 패킹케이스와 오일시일(200)의 면접촉부에서 1차실링이 이루어지고 패킹케이스와 오일시일(200)의 돌기부(220),(220a)에서 2차실링을 이루도록 함으로서 실린더 내부의 오일이나 가스가 누유되는 것을 방지하여 실린더 내부의 일정한 유압이나 가스압을 유지하게 한다.At this time, the oil seal 200 is passed through the piston that the oil or gas in the cylinder proceeds in the direction of the packing case by the movement of the piston rod 100 during expansion and compression of the piston rod 100 is the packing case and The primary seal is made at the surface contact portion of the oil seal 200 and the secondary seal is formed at the protrusions 220 and 220a of the packing case and the oil seal 200 to prevent oil or gas from leaking inside the cylinder. To maintain a constant hydraulic or gas pressure inside the cylinder.

이상과 같은 구조로 이루어지는 본 고안은 피스톤로드의 외주면에 설치되어 쇽 업소오버의 실린더 내부에 채워진 오일이나 가스의 누유를 방지하도록 설치된 오일시일의 외경으로 돌기부를 형성하여 피스톤로드의 상하직선운동시 패킹케이스와 오일시일이 1차실링을 이루고 패킹케이스와 오일시일의 돌기부가 2차실링을 이루도록 하여 실린더 내부의 오일이나 가스가 누유되는 것을 방지하도록 하는 매우 유용한 고안이다.The present invention having the structure as described above is installed on the outer circumferential surface of the piston rod to form a protrusion with the outer diameter of the oil seal installed to prevent leakage of oil or gas filled in the cylinder of the shock absorber to seal the piston rod during vertical movement It is a very useful design to prevent the oil or gas inside the cylinder from leaking by allowing the case and the oil seal to form the primary seal and the packing case and the protrusion of the oil seal to form the secondary seal.

Claims (2)

쇽 업소오버의 실린더 내부로 채워진 오일이나 가스의 누유를 방지하도록 피스톤로드(100)의 외주면(110)으로 상부가 더스트측립부의 보강스프링(400)에 지지되고 하부가 오일측립부의 보강스프링(400a)에 지지되어 내부에 변형방지용철판(300)이 삽입설치된 오일시일(200)이 패킹케이스와 면접촉하도록 설치되어 있는 쇽 업소오버에 있어서, 상기 패킹케이스와 면접촉하는 오일시일(200)의 외경(210)으로 돌기부(220),(220a)를 형성하는 것을 특징으로 하는 쇽 업소오버의 오일 및 가스 누유방지용 오일시일 구조.상부 The upper part is supported by the reinforcement spring 400 of the dust lip part and the lower part is the reinforcement spring 400a of the oil lip part by the outer circumferential surface 110 of the piston rod 100 to prevent leakage of oil or gas filled into the cylinder of the business over. The oil seal 200, which is supported on the inside and is installed in such a manner that the oil seal 200 having the strain preventing steel plate 300 inserted therein is in surface contact with the packing case, the outer diameter of the oil seal 200 which is in surface contact with the packing case ( The oil seal structure for oil and gas leakage prevention of shock absorber, characterized in that forming the projections 220, 220a by 210. 제1항에 있어서, 상기 돌기부(220),(220a)는 오일시일(200)의 외경(210)으로 상,하에 위치하도록 형성하는 것을 특징으로 하는 쇽 업소오버의 오일 및 가스 누유방지용 오일시일 구조.The oil seal structure of claim 1, wherein the protrusions 220 and 220a are formed to be positioned above and below the outer diameter 210 of the oil seal 200. .
KR2019970011442U 1997-05-21 1997-05-21 Oil and gas leakage preventing oil seal structure of shock absorber KR200157034Y1 (en)

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