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KR20030067328A - Oil seal use in a shock absorber - Google Patents

Oil seal use in a shock absorber Download PDF

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Publication number
KR20030067328A
KR20030067328A KR1020020007456A KR20020007456A KR20030067328A KR 20030067328 A KR20030067328 A KR 20030067328A KR 1020020007456 A KR1020020007456 A KR 1020020007456A KR 20020007456 A KR20020007456 A KR 20020007456A KR 20030067328 A KR20030067328 A KR 20030067328A
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KR
South Korea
Prior art keywords
oil seal
circumferential surface
shock absorber
outer circumferential
ring
Prior art date
Application number
KR1020020007456A
Other languages
Korean (ko)
Inventor
신성호
Original Assignee
주식회사 만도
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Publication date
Application filed by 주식회사 만도 filed Critical 주식회사 만도
Priority to KR1020020007456A priority Critical patent/KR20030067328A/en
Publication of KR20030067328A publication Critical patent/KR20030067328A/en

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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
    • F16F9/36—Special sealings, including sealings or guides for piston-rods
    • F16F9/362—Combination of sealing and guide arrangements for piston rods
    • 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
    • F16F2230/30—Sealing arrangements

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

본 발명은 쇽 업소버의 오일 씰에 관한 것으로서 로드 가이드(40) 상부에 설치되며, 외주면이 외부관(20)의 내주면에 밀착됨과 아울러 내주면이 피스톤 로드(30)의 외주면과 밀착되어 오일 및 가스의 누설을 방지하는 쇽 업소버의 오일 씰에 있어서, 외주면을 따라 장착홈(170)이 형성되며, 장착홈(170)에 오링(180)이 장착되어 결합되는 것이며, 오일 씰의 외주면에 오링을 구비함으로써 외부관에 오일 씰의 압입시 발생되는 오일 씰의 외주면 또는 돌출부의 손상으로 인해 가스가 누설되는 것을 방지하며, 돌출부와 함께 오일 씰과 외부관의 결합부위를 통해 가스가 누설되는 것을 이중으로 차단시키는 효과를 가진다.The present invention relates to the oil seal of the shock absorber is installed on the rod guide 40, the outer circumferential surface is in close contact with the inner circumferential surface of the outer tube 20 and the inner circumferential surface is in close contact with the outer circumferential surface of the piston rod (30) In the oil seal of the shock absorber to prevent leakage, the mounting groove 170 is formed along the outer circumferential surface, the O-ring 180 is mounted and coupled to the mounting groove 170, and the O-ring is provided on the outer circumferential surface of the oil seal. It prevents gas from leaking due to damage on the outer circumferential surface of the oil seal or protrusions generated when the oil seal is pressed into the outer tube, and doublely blocks the leakage of gas through the joint of the oil seal and the outer tube together with the protrusion. Has an effect.

Description

쇽 업소버의 오일 씰{OIL SEAL USE IN A SHOCK ABSORBER}오일 OIL SEAL USE IN A SHOCK ABSORBER}

본 발명은 쇽 업소버의 오일 씰에 관한 것으로서, 더욱 상세하게는 외부관에 오일 씰의 압입시 발생되는 오일 씰의 외주면 또는 돌출부의 손상으로 인해 가스가 누설되는 것을 방지하는 쇽 업소버의 오일 씰에 관한 것이다.The present invention relates to an oil seal of a shock absorber, and more particularly, to an oil seal of a shock absorber which prevents gas from leaking due to damage to the outer circumferential surface or protrusion of the oil seal generated when the oil seal is pressed into the outer tube. will be.

일반적으로 쇽 업소버(shock absorber)는 차축과 차체 사이에 설치되어 차량의 주행시 차축이 노면으로부터 받는 진동이나 충격을 흡수하여 승차감을 향상시키는 방진, 완충장치로서, 그 내부는 감쇠력을 증대시킬 수 있도록 가스 및 오일 등의 충진물이 채워진다.In general, shock absorbers are installed between the axle and the body to absorb vibrations or shocks received by the axle from the road surface to improve ride comfort. The interior of the shock absorber is a gas so as to increase damping force. And fillers such as oil are filled.

도 1은 종래의 쇽 업소버의 오일 씰을 도시한 단면도이다. 도시된 바와 같이, 종래의 쇽 업소버는 오일이 가득 채워진 내부관(10)과, 내부관(10)의 외측으로 오일과 가스가 채워진 외부관(20)과, 일단은 내부관(10) 내측으로 삽입되고 타단은 외부관(20) 외측으로 연장된 피스톤 로드(30)가 마련된다.1 is a cross-sectional view showing an oil seal of a conventional shock absorber. As shown, the conventional shock absorber has an inner tube 10 filled with oil, an outer tube 20 filled with oil and gas outside the inner tube 10, and one end thereof into the inner tube 10. The piston rod 30 is inserted and the other end is extended to the outside of the outer tube 20 is provided.

내부관(10)은 상단에 피스톤 로드(30)를 지지 안내하는 로드 가이드(40)가 결합되며, 외부관(20)에 삽입되어 있다.The inner tube 10 is coupled to the rod guide 40 for supporting the piston rod 30 to the upper end, and is inserted into the outer tube 20.

외부관(20)은 밀폐된 중공관으로서 외부 하측에는 미도시된 차축과 연결될 수 있도록 하부 브래킷(21)이 마련되어 있고, 피스톤 로드(30)가 외부로 연장될 수 있도록 상단면의 중심축은 개구되어 있으며, 피스톤 로드(30)를 지지 안내하는 로드 가이드(40)가 상단 내측에 결합되고, 로드 가이드(40)의 상단에 오일 누설을 방지할 수 있도록 오일 씰(50)과, 그 상단에 씌워져 결합되는 캡(60)이 설치된다.The outer tube 20 is a closed hollow tube, which is provided with a lower bracket 21 at the outer lower side so as to be connected to an axle not shown, and the central axis of the upper surface is opened so that the piston rod 30 can extend to the outside. The rod guide 40 supporting the piston rod 30 is coupled to the inner side of the upper end, and the upper end of the rod guide 40 is coupled to the upper end of the oil seal 50 so as to prevent oil leakage. Cap 60 is installed.

로드 가이드(40)는 수직되게 오리피스(orifice;41)가 형성되며, 상부면에 피스톤 로드(30)와의 결합부위를 통해 누설된 오일이나 가스를 오리피스(41)를 통해 외부관(20)으로 흐르도록 하는 유로홈(42)이 형성된다.The rod guide 40 has an orifice 41 formed vertically, and flows oil or gas leaked through the coupling portion with the piston rod 30 on the upper surface to the outer tube 20 through the orifice 41. The flow path groove 42 is formed.

오일 씰(50)은 중심축에 중공(51)이 형성된 원판형상으로 이루어지며, 외부가 고무재질로 형성되어 외주면이 외부관(20)의 내주면에 밀착됨과 아울러 내주면이 피스톤 로드(30)의 외주면과 밀착되어 내부관(10)과 외부관(20)으로부터 오일 및 가스의 누설을 방지한다.The oil seal 50 is formed in a disk shape in which a hollow 51 is formed in a central axis, and the outside is made of a rubber material so that the outer circumferential surface is in close contact with the inner circumferential surface of the outer tube 20, and the inner circumferential surface is the outer circumferential surface of the piston rod 30. In close contact with each other to prevent leakage of oil and gas from the inner tube 10 and the outer tube 20.

또한, 오일 씰(50)은 내부에 피스톤 로드(30)의 이동으로 인해 전달되는 하중으로 변형되는 것을 방지하는 금속재질의 보강와셔(52)가 설치되고, 중공(51)의 상.하측으로부터 연장되어 형성되는 상측단과 하측단이 피스톤 로드(30)와 밀착됨과 아울러 상측단과 하측단 사이의 중공(51)의 중간부분이 피스톤 로드(30)와 일정 간격으로 이격되는 밀착부(53)가 형성되며, 밀착부(53)의 외주면에는 밀착부(53)를 피스톤 로드(30)측으로 압착하는 금속 재질의 압착링(54)이 상하로 각각 설치된다.In addition, the oil seal 50 is provided with a metal reinforcing washer 52 to prevent deformation into a load transmitted due to the movement of the piston rod 30 therein, and extends from the upper and lower sides of the hollow 51. The upper end and the lower end are formed in close contact with the piston rod 30 and the middle part of the hollow 51 between the upper end and the lower end is formed in close contact with the piston rod 30 at regular intervals 53. On the outer circumferential surface of the close contact portion 53, a pressing ring 54 made of a metal material for pressing the close contact portion 53 toward the piston rod 30 is provided up and down, respectively.

보강와셔(52)는 쇽 업소버의 마지막 조립공정인 코킹 또는 컬링, 즉 외부관(20) 내부에 피스톤 로드(30) 및 로드 가이드(40)가 조립된 내부관(10)과 오일 씰(50) 등을 삽입한 후 외부관(30) 상단을 내측으로 변형시 또는 오일 씰(50) 상단을 미도시된 축력 유지바에 의해 하방으로 누른 후 작업시에 오일 씰(50)이 형상을 유지토록 하여 변형되는 것을 방지한다. 물론 코킹 또는 컬링시 로드 가이드(40)와 오일 씰(50)은 면접촉이 된다.The reinforcing washer 52 is the final assembly of the shock absorber, which is caulking or curling, that is, the inner tube 10 and the oil seal 50 in which the piston rod 30 and the rod guide 40 are assembled inside the outer tube 20. After inserting the back and the like deformed when the upper end of the outer tube 30 or the lower end of the oil seal 50 by the axial force retaining bar not shown, during operation, the oil seal 50 is deformed to maintain the shape. Prevent it. Of course, when caulking or curling the rod guide 40 and the oil seal 50 is in surface contact.

그리고, 오일 씰(50)의 하부면에는 로드 가이드(40)에 형성된 유로홈(42)에 밀착되는 체크 립(check lip; 55)이 형성되며, 외주면의 하단에는 외부관(20)과의 결합부위를 통해 가스가 외측으로 누설되는 것을 방지하기 위해 외부관(20)과 밀착되는 돌출부(56)가 연장 형성된다.In addition, a check lip 55 is formed on the lower surface of the oil seal 50 to be in close contact with the flow path groove 42 formed in the rod guide 40, and the lower end of the outer circumferential surface is coupled to the outer tube 20. Protruding portion 56 which is in close contact with the outer tube 20 is formed to prevent the gas from leaking out through the portion.

이와 같은 종래의 쇽 업소버의 오일 씰은 외부관에 오일 씰을 강제 압입시에 오일 씰의 외주면 또는 돌출부가 손상됨으로써 오일 씰의 외주면과 외부관의 결합부위를 통해 가스가 누설되는 문제점을 가지고 있으며, 시간이 지남에 따라 외부관에 대한 돌출부의 밀착력이 떨어져 가스의 누설을 제대로 차단시키지 못하는 문제점을 가지고 있었다.The oil seal of the conventional shock absorber has a problem in that gas leaks through the coupling portion of the outer circumferential surface and the outer tube of the oil seal by damaging the outer circumferential surface or protrusion of the oil seal when forcibly pressing the oil seal into the outer tube. As time went by, the adhesion of the protrusion to the outer tube had a problem of not properly blocking the leakage of gas.

따라서, 숍 업소버 내부의 가스가 과다하게 노출됨으로써 쇽 업소버의 압축 행정시 감쇠력의 루프 래그(loop lag) 현상에 따른 진동 소음이 발생하여 승차감이 현저하게 저하되는 결과를 초래하였다.Therefore, excessive exposure of the gas inside the shop absorber causes vibration noise due to the loop lag phenomenon of the damping force during the compression stroke of the shock absorber, resulting in a significant reduction in ride comfort.

본 발명은 상술한 바와 같은 종래의 문제점을 해결하기 위한 것으로서, 오일 씰의 외주면에 오링을 구비함으로써 외부관에 오일 씰의 압입시 발생되는 오일 씰의 외주면 또는 돌출부의 손상으로 인해 가스가 누설되는 것을 방지하며, 돌출부와 함께 오일 씰과 외부관의 결합부위를 통해 가스가 누설되는 것을 이중으로 차단시키는 쇽 업소버의 오일 씰을 제공하는데 그 목적이 있다.The present invention is to solve the conventional problems as described above, by providing an O-ring on the outer circumferential surface of the oil seal that the gas leaks due to damage to the outer circumferential surface or protrusion of the oil seal generated when the oil seal is pressed in the outer tube It is an object of the present invention to provide an oil seal of a shock absorber which doubles the leakage of gas through the joint of the oil seal and the outer tube together with the protrusion.

이와 같은 목적을 실현하기 위한 본 발명은, 로드 가이드 상부에 설치되며, 외주면이 외부관의 내주면에 밀착됨과 아울러 내주면이 피스톤 로드의 외주면과 밀착되어 오일 및 가스의 누설을 방지하는 쇽 업소버의 오일 씰에 있어서, 외주면을 따라 장착홈이 형성되며, 장착홈에 오링이 장착되어 결합되는 것을 특징으로 한다.The present invention for achieving the above object, the oil seal of the shock absorber is installed in the upper portion of the rod guide, the outer peripheral surface is in close contact with the inner peripheral surface of the outer tube and the inner peripheral surface is in close contact with the outer peripheral surface of the piston rod to prevent the leakage of oil and gas In, the mounting groove is formed along the outer circumferential surface, characterized in that the mounting ring is coupled to the O-ring.

외주면을 따라 장착홈과 상응하는 지지홈을 형성하여, 장착홈에 결합되는 오링을 지지하는 보강와셔가 내부에 설치되는 것을 특징으로 한다.Forming a support groove corresponding to the mounting groove along the outer circumferential surface, characterized in that the reinforcing washer to support the O-ring coupled to the mounting groove is installed therein.

도 1은 종래의 쇽 업소버의 오일 씰을 도시한 단면도이고,1 is a cross-sectional view showing an oil seal of a conventional shock absorber,

도 2는 본 발명에 따른 쇽 업소버의 오일 씰을 도시한 단면도이다.2 is a cross-sectional view showing the oil seal of the shock absorber according to the present invention.

＜도면의 주요부분에 대한 부호의 설명＞<Description of the code | symbol about the principal part of drawing>

100 ; 오일 씰 110 ; 중공100; Oil seal 110; Hollow

120 ; 보강와셔 121 ; 지지홈120; Reinforcing washers 121; Support groove

130 ; 밀착부 140 ; 압착링130; Tight contact portion 140; Crimp ring

150 ; 체크 립 160 ; 돌출부150; Check lip 160; projection part

170 ; 장착홈 180 ; 오링170; Mounting groove 180; O-ring

이하, 본 발명의 가장 바람직한 실시예를 첨부한 도면을 참조하여 본 발명의 기술분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 더욱 상세히 설명하기로 한다.DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

도 2는 본 발명에 따른 쇽 업소버의 오일 씰을 도시한 단면도이다. 도시된 바와 같이, 본 발명에 따른 쇽 업소버의 오일 씰(100)은 내부관(10)과 외부관(20)의 오일이나 가스의 누설을 방지하기 위한 것으로서, 중심축에 중공(110)이 형성된 원판형상으로 이루어지고, 외부는 고무재질로 형성되며, 내부는 금속재질의 보강와셔(120)가 설치되고, 중공(110)의 상.하측단은 각각 연장 형성되어 피스톤 로드(30)에 밀착되는 밀착부(130)를 형성하며, 밀착부(130)의 외주면에는 각각 금속재질의 압착링(140)이 설치되고, 하부면에는 체크 립(150)이 형성되며, 외주면 하단에 돌출부(160)가 연장 형성되고, 외주면을 따라 형성되는 장착홈(170)에 오링(O-ring; 180)이 결합된다.2 is a cross-sectional view showing the oil seal of the shock absorber according to the present invention. As shown, the oil seal 100 of the shock absorber according to the present invention is for preventing the leakage of oil or gas of the inner tube 10 and the outer tube 20, the hollow 110 is formed in the central axis It is made in the shape of a disc, the outside is formed of a rubber material, the inside is a metal material reinforcing washer 120 is installed, the upper and lower ends of the hollow 110 is formed to be extended to be in close contact with the piston rod (30) A close contact portion 130 is formed, a metal ring pressing ring 140 is installed on the outer circumferential surface of the close contact portion 130, and a check lip 150 is formed on the lower surface thereof, and a protrusion 160 is formed at the lower end of the outer circumferential surface. The O-ring 180 is coupled to the mounting groove 170 extending along the outer circumferential surface thereof.

오일 씰(100)은 외부가 고무재질로 형성되어 외주면이 외부관(20)의 내주면에 밀착됨과 아울러 내주면이 피스톤 로드(30)의 외주면과 밀착되어 내부관(10)과 외부관(20)으로부터 오일 및 가스의 누설을 방지한다.The oil seal 100 is formed of a rubber material on the outside so that the outer circumference is in close contact with the inner circumference of the outer tube 20, and the inner circumference is in close contact with the outer circumference of the piston rod 30, so that the inner seal 10 and the outer tube 20 Prevents oil and gas leakage

또한, 오일 씰(100)은 피스톤 로드(30)의 이동으로 인해 전달되는 하중으로 인해 오일 씰(100)이 변형되는 것을 방지하기 위하여 내부에 금속재질의 보강와셔(120)가 설치되고, 중심축에 형성되는 중공(110)의 상.하측으로부터 연장되어 형성된 상.하측단이 피스톤 로드(30)와 밀착되되, 상측단과 하측단 사이의 중공의 중간부분이 피스톤 로드(30)와 일정 간격으로 이격되는 밀착부(130)가 형성되며, 이 밀착부(130)의 외주면에는 밀착부(130)를 피스톤 로드(30)측으로 압착하도록 압착링(140)이 각각 설치된다.In addition, the oil seal 100 has a metal reinforcement washer 120 is installed therein to prevent the oil seal 100 from being deformed due to the load transmitted due to the movement of the piston rod 30, and the central shaft Upper and lower ends formed extending from the upper and lower sides of the hollow 110 is formed in close contact with the piston rod 30, the middle portion of the hollow between the upper end and the lower end is spaced apart from the piston rod 30 at regular intervals. The contact portion 130 is formed, and the pressing ring 140 is installed on the outer circumferential surface of the contact portion 130 to compress the contact portion 130 toward the piston rod 30.

그리고, 오일 씰(100)은 하부면과 외주면의 하단에 체크 립(150)과돌출부(160)가 각각 연장 형성된다.In addition, the oil seal 100 has a check lip 150 and a protrusion 160 extending from the lower end and the outer circumferential surface, respectively.

체크 립(150)은 로드 가이드(40)의 상부면에 형성된 유로홈(42)에 밀착되어 외부관(20)으로부터 오리피스(orifice; 41)를 통해 유출된 가스나 오일이 유로홈(42)을 통해 오일 씰(100)의 밀착부(130)와 피스톤 로드(30)의 결합부위를 따라 외측으로 누설되는 것을 방지하며, 돌출부(160)는 오일 씰(100)의 외주면 하단에 연장 형성되어 오일 씰(100)의 외주면과 외부관(20)과의 결합부위를 통해 가스가 외측으로 누설되는 것을 방지한다.The check lip 150 is in close contact with the flow path groove 42 formed on the upper surface of the rod guide 40 so that the gas or oil flowing out from the outer tube 20 through the orifice 41 may pass through the flow path groove 42. It prevents the leakage to the outside along the coupling portion of the contact portion 130 and the piston rod 30 of the oil seal 100 through, the protrusion 160 is formed extending to the bottom of the outer peripheral surface of the oil seal 100 to seal the oil Through the coupling portion between the outer circumferential surface of the (100) and the outer tube (20) to prevent leakage of gas to the outside.

또한, 오일 씰(100)의 외주면에 외주면을 따라 장착홈(170)을 형성하고, 이 장착홈(170)에 오링(O-ring; 180)이 결합된다.In addition, the mounting groove 170 is formed on the outer circumferential surface of the oil seal 100 along the outer circumferential surface, and an O-ring 180 is coupled to the mounting groove 170.

한편, 외부관(20)에 오일 씰(100)을 압입하여 조립시 오일 씰(100)의 장착홈(170)으로부터 오링(180)이 이탈되는 것을 방지하기 위하여 오일 씰(100)의 내부에 설치되는 보강와셔(120)는 오일 씰(100)의 장착홈(170)에 상응하는 지지홈(121)을 외주면을 따라 형성함이 바람직하다. 따라서, 오일 씰(100)의 장착홈(170)에 오링(180)을 결합시키면 오링(180)은 금속재질인 보강와셔(120)의 지지홈(121)에 지지됨으로써 오일 씰(100)의 장착홈(170)내에 고정된다.Meanwhile, the oil seal 100 is press-fitted to the outer tube 20 to be installed inside the oil seal 100 in order to prevent the O-ring 180 from being separated from the mounting groove 170 of the oil seal 100 during assembly. The reinforcing washer 120 is preferably formed along the outer circumferential surface of the support groove 121 corresponding to the mounting groove 170 of the oil seal 100. Therefore, when the O-ring 180 is coupled to the mounting groove 170 of the oil seal 100, the O-ring 180 is supported by the support groove 121 of the reinforcing washer 120 made of metal, thereby mounting the oil seal 100. It is fixed in the groove 170.

이와 같은 본 발명에 따른 쇽 업소버의 오일 씰의 작용을 설명하면 다음과 같다.Referring to the operation of the oil seal of the shock absorber according to the present invention as follows.

오일 씰(100)의 오링(180)은 쇽 업소버(100)의 조립 공정에서 외부관(20)에 오일 씰(100)을 압입시 비교적 얇은 고무재질의 오일 씰(100)의 외주면 또는 돌출부(160)가 손상될 경우 오일 씰(100)의 외주면과 외부관(20)의 결합부위를 통해 가스가 누설되는 것을 방지하게 된다.The O-ring 180 of the oil seal 100 is the outer circumferential surface or the protrusion 160 of the oil seal 100 of a relatively thin rubber material when the oil seal 100 is press-fitted into the outer tube 20 in the assembly process of the shock absorber 100. ) Is damaged to prevent the gas from leaking through the coupling portion of the outer circumferential surface of the oil seal 100 and the outer tube 20.

또한, 오링(180)은 돌출부(160)와 함께 가스의 누설을 이중으로 차단함으로써 오일 씰(100)과 외부관(20)의 결합부위의 기밀을 완벽하게 유지하도록 한다.In addition, the O-ring 180 to block the leakage of the gas in conjunction with the protrusion 160 to maintain the air tightness of the coupling portion of the oil seal 100 and the outer tube 20 completely.

한편, 보강와셔(120)의 지지홈(121)에 오링(180)이 지지 및 고정됨으로써 외부관(20)에 오일 씰(100)을 압입시 오일 씰(100)로부터 오링(180)이 이탈되거나 오링(180)의 유동으로 인한 오일 씰(100) 외주면의 손상을 방지하게 된다.Meanwhile, when the O-ring 180 is supported and fixed to the support groove 121 of the reinforcing washer 120, the O-ring 180 is separated from the oil seal 100 when the oil seal 100 is press-fitted into the outer tube 20. To prevent damage to the outer circumferential surface of the oil seal 100 due to the flow of the O-ring 180.

이상과 같이 본 발명의 바람직한 실시예에 따르면, 오일 씰의 외주면에 오링을 구비함으로써 외부관에 오일 씰의 압입시 발생되는 오일 씰의 외주면 또는 돌출부의 손상으로 인해 가스가 누설되는 것을 방지한다.According to a preferred embodiment of the present invention as described above, by providing an O-ring on the outer peripheral surface of the oil seal to prevent the gas leakage due to damage to the outer peripheral surface or protrusion of the oil seal generated when the oil seal is pressed in the outer tube.

상술한 바와 같이, 본 발명에 따른 쇽 업소버의 오일 씰은 오일 씰의 외주면에 오링을 구비함으로써 외부관에 오일 씰의 압입시 발생되는 오일 씰의 외주면 또는 돌출부의 손상으로 인해 가스가 누설되는 것을 방지하며, 돌출부와 함께 오일 씰과 외부관의 결합부위를 통해 가스가 누설되는 것을 이중으로 차단시키는 효과를 가지고 있다.As described above, the oil seal of the shock absorber according to the present invention is provided with an O-ring on the outer circumferential surface of the oil seal to prevent the gas from leaking due to damage of the outer circumferential surface or protrusion of the oil seal generated when the oil seal is pressed into the outer tube. In addition, it has an effect of double blocking the leakage of gas through the coupling portion of the oil seal and the outer tube together with the protrusion.

이상에서 설명한 것은 본 발명에 따른 쇽 업소버의 오일 씰을 실시하기 위한 하나의 실시예에 불과한 것으로서, 본 발명은 상기한 실시예에 한정되지 않고, 이하의 특허청구범위에서 청구하는 바와 같이 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변경 실시가 가능한 범위까지 본 발명의 기술적 정신이 있다고 할 것이다.What has been described above is only one embodiment for carrying out the oil seal of the shock absorber according to the present invention, and the present invention is not limited to the above-described embodiment, as claimed in the following claims. Without departing from the gist of the present invention, one of ordinary skill in the art will have the technical spirit of the present invention to the extent that various modifications can be made.

Claims (2)

로드 가이드 상부에 설치되며, 외주면이 외부관의 내주면에 밀착됨과 아울러 내주면이 피스톤 로드의 외주면과 밀착되어 오일 및 가스의 누설을 방지하는 쇽 업소버의 오일 씰에 있어서,In the oil seal of the shock absorber, which is installed on the upper part of the rod guide, the outer circumference is in close contact with the inner circumference of the outer pipe and the inner circumference is in close contact with the outer circumference of the piston rod to prevent leakage of oil and gas. 상기 외주면을 따라 장착홈이 형성되며, 상기 장착홈에 오링이 장착되어 결합되는 것을 특징으로 하는 쇽 업소버의 오일 씰.The mounting groove is formed along the outer circumferential surface, the oil seal of the shock absorber, characterized in that the mounting ring is coupled to the O-ring. 제 1 항에 있어서, 외주면을 따라 상기 장착홈과 상응하는 지지홈을 형성하여, 상기 장착홈에 결합되는 상기 오링을 지지하는 보강와셔가 내부에 설치되는 것을 특징으로 하는 쇽 업소버의 오일 씰.The oil seal of the shock absorber according to claim 1, wherein a support washer is formed along the outer circumferential surface to support the o-ring coupled to the mounting groove.
KR1020020007456A 2002-02-08 2002-02-08 Oil seal use in a shock absorber KR20030067328A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200120434A (en) 2019-04-12 2020-10-21 평화오일씰공업주식회사 Oil seal for shock absorbers with improved friction
CN113266663A (en) * 2021-06-10 2021-08-17 青岛睿智森油封有限公司 Guider of shock absorber and assembly method of oil seal

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JPH07317824A (en) * 1994-05-27 1995-12-08 Unisia Jecs Corp Rod guide structure of liquid pressure buffer
JPH1182598A (en) * 1997-09-08 1999-03-26 Kayaba Ind Co Ltd Hydraulic shock absorber and gas filling method thereof
JP2002147517A (en) * 2000-11-08 2002-05-22 Showa Corp Hydraulic shock absorber oil seal
KR20200010908A (en) * 2018-07-23 2020-01-31 엘지이노텍 주식회사 Ultraviolet irradiation module and ultraviolet irradiation apparatus including the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07317824A (en) * 1994-05-27 1995-12-08 Unisia Jecs Corp Rod guide structure of liquid pressure buffer
JPH1182598A (en) * 1997-09-08 1999-03-26 Kayaba Ind Co Ltd Hydraulic shock absorber and gas filling method thereof
JP2002147517A (en) * 2000-11-08 2002-05-22 Showa Corp Hydraulic shock absorber oil seal
KR20200010908A (en) * 2018-07-23 2020-01-31 엘지이노텍 주식회사 Ultraviolet irradiation module and ultraviolet irradiation apparatus including the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200120434A (en) 2019-04-12 2020-10-21 평화오일씰공업주식회사 Oil seal for shock absorbers with improved friction
CN113266663A (en) * 2021-06-10 2021-08-17 青岛睿智森油封有限公司 Guider of shock absorber and assembly method of oil seal
CN113266663B (en) * 2021-06-10 2022-09-06 青岛睿智森油封有限公司 Guider of shock absorber and assembly method of oil seal

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