KR100570028B1 - Oil ling combination device - Google Patents

Oil ling combination device Download PDF

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Publication number
KR100570028B1
KR100570028B1 KR1020040046384A KR20040046384A KR100570028B1 KR 100570028 B1 KR100570028 B1 KR 100570028B1 KR 1020040046384 A KR1020040046384 A KR 1020040046384A KR 20040046384 A KR20040046384 A KR 20040046384A KR 100570028 B1 KR100570028 B1 KR 100570028B1
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South Korea
Prior art keywords
oil ring
expander
oil
guide rail
cylinder
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KR1020040046384A
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Korean (ko)
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KR20050121311A (en
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노태준
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현대자동차주식회사
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Priority to KR1020040046384A priority Critical patent/KR100570028B1/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
    • F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
    • F16J9/06—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction using separate springs or elastic elements expanding the rings; Springs therefor ; Expansion by wedging
    • F16J9/061—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction using separate springs or elastic elements expanding the rings; Springs therefor ; Expansion by wedging using metallic coiled or blade springs
    • 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
    • F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
    • F16J9/10—Special members for adjusting the rings
    • 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
    • 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
    • Y10S277/909—Similar sealing structures for mounting on piston and about rod

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

본 발명은 추종성이 개선된 오일링 장착구조에 관한 것으로서, 특히 피스톤의 링홈 내부에 오일링을 받쳐주면서 외곽으로 밀어내는 익스펜더를 장착하되, 익스펜더의 하측에 리턴스프링이 감겨있는 가이드레일을 형성하고, 상기 가이드레일에 익스펜더를 결합하여 익스펜더가 가이드레일을 따라 수평 슬라이딩 이동하면서 오일링이 실린더의 벽면 형상에 추종하여 출몰하도록 하므로서, 실린더의 형상변경에 따른 오일링의 추종성이 매우 향상되어 항상 최소한의 유막두께를 유지할 수 있도록 한 추종성이 개선된 오일링 장착구조에 관한 것이다.The present invention relates to an oil ring mounting structure with improved followability. In particular, the expander is mounted on the inside of the ring groove of the piston to support the oil ring and pushes it to the outside, and forms a guide rail having a return spring wound on the lower side of the expander. The expander is coupled to the guide rail so that the expander moves horizontally along the guide rail while the oil ring follows the wall shape of the cylinder, and the oil ring follows the shape of the cylinder. The present invention relates to an oil ring mounting structure with improved followability for maintaining thickness.

오일링, 익스펜더, 가이드레일, 리턴스프링, 추종성,Oil ring, expander, guide rail, return spring, followability,

Description

추종성이 개선된 오일링 장착구조{Oil ling combination device}Oil ring mounting structure with improved followability {Oil ling combination device}

도 1 은 본 발명의 추종성이 개선된 오일링 장착구조를 보인 도면.1 is a view showing an oil ring mounting structure with improved tracking of the present invention.

도 2 는 종래의 오일링 장착구조를 보인 도면.Figure 2 is a view showing a conventional oil ring mounting structure.

※ 도면의 주요부분에 대한 부호의 설명※ Explanation of code for main part of drawing

10 : 실린더 11 : 피스톤10 cylinder 11 piston

12 : 링홈 13 : 오일링12: ring groove 13: oil ring

14 : 익스펜더 15 : 수평받침부14: expander 15: horizontal support

16 : 경사돌기부 17 : 결합부16: inclined protrusion 17: coupling portion

18 : 가이드레일 19 : 리턴스프링18: guide rail 19: return spring

본 발명은 추종성이 개선된 오일링 장착구조에 관한 것으로서, 특히 실린더의 형상변경에 따른 오일링의 추종성이 매우 향상되어 항상 최소한의 유막두께를 유지할 수 있도록 한 추종성이 개선된 오일링 장착구조에 관한 것이다.The present invention relates to an oil ring mounting structure with improved followability, and more particularly, to an oil ring mounting structure with improved followability in order to maintain a minimum film thickness at all times by greatly improving the followability of an oil ring due to a change in shape of a cylinder. will be.

실린더 내에서 상하 왕복운동하는 피스톤에는 실린더 내벽면과의 기밀유지 및 마모율감소를 위한 오일링이 설치되고 있다.Pistons vertically reciprocating in the cylinder are provided with an oil ring for maintaining airtightness and reducing the wear rate with the inner wall of the cylinder.

상기한 오일링은 실린더 벽면에 최소한의 두께로 오일 유막이 형성되도록 하여 피스톤과 실린더 벽사이의 기밀유지 및 가스의 유출을 방지하는 기능을 갖는다.The oil ring has a function of preventing oil leakage and gas leakage between the piston and the cylinder wall by forming an oil film with a minimum thickness on the cylinder wall.

상기와같은 기능을 위해서는 고부하, 고온도의 분위기에서 실린더벽을 섭동하면서 장시간의 사용에 견디어야하며, 만약 오일링의 이상으로 실린더 벽면에 국부적으로 유막이 끊어지면 그 부분은 금속접촉이 되어 스커핑이 발생되고, 실린더벽면에 윤활유가 필요이상으로 많아지면 연소실로 오일이 흡수되어 오일소비량이 증가함은 물론 엔진의 성능이 저하되게 된다.For the above functions, the cylinder wall must be perturbed in a high load, high temperature atmosphere and endure long time use.If the oil film is cut off locally on the cylinder wall due to the oil ring, the part is in contact with the metal and scuffing. If the lubricating oil in the cylinder wall surface is more than necessary, the oil is absorbed into the combustion chamber to increase the oil consumption as well as deteriorate the performance of the engine.

도 2 는 종래의 오일링 장착구조를 도시한 것으로서,Figure 2 shows a conventional oil ring mounting structure,

실린더(1)의 내부에 상하 왕복운동하도록 피스톤(2)이 삽입되고, 상기 피스톤(2)의 외주면상에는 오일링(5)의 장착을 위한 링홈(3)이 요입 형성된다.The piston 2 is inserted into the cylinder 1 to reciprocate up and down, and a ring groove 3 for mounting the oil ring 5 is formed on the outer circumferential surface of the piston 2.

상기 링홈(3) 내에는 상하측에 2개의 오일링(5)이 장착되는데, 그 오일링(5)의 사이에는 높은 장력을 가진 익스펜더(4)가 형성된다.In the ring groove 3, two oil rings 5 are mounted on the upper and lower sides, and an expander 4 having a high tension is formed between the oil rings 5.

상기 익스펜더(4)는 오일링(5)을 받쳐주면서 외곽으로 밀어내어 오일링(5)이 실린더 벽면에 밀착되도록 하는 기능을 갖는다.The expander 4 supports the oil ring 5 and pushes it outward so that the oil ring 5 comes into close contact with the cylinder wall.

그러나, 종래의 오일링 장착구조는 오일링(5)는 고장력을 익스펜더에 의해 링홈(3)에 장착되는 것이기 때문에 실린더헤드의 볼트체결에 따른 실린더 형상변경 또는 열변형에 의해 실린더 형상변경시 오일링(5)이 실린더 내벽면의 굴곡을 따라 추종하지 못하여 실린더 벽면의 굴곡부위에 유막이 형성되지 못하고 끊기는 현상이 발생하고, 유막이 끊긴 부위에서는 피스톤(2)과 실린더(1)가 금속접촉이 이루어져 스커핑 현상이 발생하게되는 문제점이 있었다. However, in the conventional oil ring mounting structure, since the oil ring 5 is mounted on the ring groove 3 by the expander, the oil ring when the cylinder shape is changed by the cylinder shape change or heat deformation due to the bolting of the cylinder head. (5) can not follow the curve of the inner wall of the cylinder, the oil film is not formed in the bent portion of the cylinder wall surface break occurs, the metal film is in contact with the piston (2) and the cylinder (1) where the oil film is broken There was a problem that the scuffing phenomenon occurs.

따라서, 상기 문제점을 해결하기 위한 본 발명은 피스톤의 링홈 내부에 오일링을 받쳐주면서 외곽으로 밀어내는 익스펜더를 장착하되, 익스펜더의 하측에 리턴스프링이 감겨있는 가이드레일을 형성하고, 상기 가이드레일에 익스펜더를 결합하여 익스펜더가 가이드레일을 따라 수평 슬라이딩 이동하면서 오일링이 실린더의 벽면 형상에 추종하여 출몰하도록 하므로서, 실린더의 형상변경에 따른 오일링의 추종성이 매우 향상되어 항상 최소한의 유막두께를 유지할 수 있도록 한 추종성이 개선된 오일링 장착구조를 제공함을 목적으로 한다.Accordingly, the present invention for solving the above problems is equipped with an expander that pushes outward while supporting the oil ring inside the ring groove of the piston, forming a guide rail wound around the return spring on the lower side of the expander, the expander on the guide rail By combining the expander to move horizontally along the guide rail while the oil ring follows the wall shape of the cylinder and floats, the followability of the oil ring is greatly improved according to the shape change of the cylinder, so that the oil film thickness can always be kept at a minimum. It is an object to provide an oil ring mounting structure with improved followability.

상기 목적달성을 위한 본 발명은,The present invention for achieving the above object,

피스톤의 측면에 링홈이 요입 형성되고, 그 링홈 내에 오일링이 장착되는 것에 있어서,In the ring groove is formed in the side of the piston, the oil ring is mounted in the ring groove,

상기 오일링을 받쳐주면서 외곽으로 밀어내어 오일링이 실린더 벽면에 밀착되도록 하는 익스펜더를 링홈내에 장착하되,While supporting the oil ring is pushed outward so that the oil ring is in close contact with the cylinder wall mounted in the ring groove,

상기 익스펜더의 하측에 익스팬더의 수평방향 슬라이딩 움직임을 탄력적으로 안내하는 가이드레일을 형성한 것을 특징으로 한다.A guide rail for elastically guiding the horizontal sliding movement of the expander is formed on the lower side of the expander.

그리고, 상기 익스펜더는 The expander is

오일링을 하측에서 받쳐주는 수평받침부가 구비되고, 그 수평받침부의 내측으로 오일링의 내측부를 지지하는 경사돌기부가 상향 돌출되며, 상기 수평받침부의 저면에는 가이드레일에 습동가능하게 끼워지는 결합부가 형성된 것임을 특징으로 한다. It is provided with a horizontal support portion for supporting the oil ring from the lower side, the inclined protrusion for supporting the inner portion of the oil ring protrudes upward into the horizontal support portion, the bottom portion of the horizontal support portion is formed with a coupling portion that is slideable to the guide rail It is characterized by.                         

또한, 상기 가이드레일은 익스펜더의 결합부가 끼워지도록 봉형상으로 형성하되 그 일단에는 결합부를 밀어내는 방향으로 탄성을 가하는 리턴스프링이 감겨져있는 것을 특징으로 한다.In addition, the guide rail is formed in the shape of a rod so that the engaging portion of the expander is fitted, characterized in that the return spring for applying elasticity in the direction to push the engaging portion is wound.

이하 첨부된 도면 도 1 을 참조하여 본 발명의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

도면부호 10 은 실린더를 나타내고, 상기 실린더(10)의 내부에는 연소력에 의해 상하 왕복운동하는 피스톤(11)이 장착된다.Reference numeral 10 denotes a cylinder, and a piston 11 is mounted inside the cylinder 10 to reciprocate up and down by combustion force.

상기 피스톤(11)의 외주연에는 링홈(12)이 요입 형성되고, 링홈(12) 내부에는 실린더(10) 벽면의 유막 두께를 일정하게 유지시키기 위한 오일링(13)이 장착된다.A ring groove 12 is formed in the outer circumference of the piston 11, and an oil ring 13 is mounted in the ring groove 12 to maintain a constant film thickness of the wall of the cylinder 10.

상기 오일링(13)의 하측에는 익스펜더(14)와 가이드레일(18)이 형성된다.The expander 14 and the guide rail 18 are formed below the oil ring 13.

상기 익스펜더(14)는 오일링(13)을 수평상으로 받쳐주는 수평받침부(15)가 구비되고, 이 수평받침부(15)의 내측으로는 오일링(13)의 내측 단부를 지지하는 경사돌기부(16)가 일정각도 경사지게 상향 돌출 형성되며, 수평받침부(15)의 하측에는 가이드레일(18)에 끼워진 상태로 슬라이딩 이동하는 결합부(17)가 형성된다.The expander 14 is provided with a horizontal support portion 15 for supporting the oil ring 13 horizontally, the inclined to support the inner end of the oil ring 13 to the inside of the horizontal support portion 15. The protrusion 16 is formed to protrude upwardly at an angle, and the coupling part 17 slidingly moved in a state of being fitted to the guide rail 18 is formed at the lower side of the horizontal support part 15.

그리고, 상기 가이드레일(8)은 결합부(17)가 끼워질 수 있도록 봉형상으로 형성되고, 그 내측에는 익스펜더(14)를 외곽으로 밀어내는 방향으로 탄성을 가하는 리턴스프링(19)이 감겨져있다.In addition, the guide rail 8 is formed in a rod shape so that the coupling portion 17 can be fitted therein, and a return spring 19 is wound around the inner side of the guide rail 8 to push the expander 14 outward. .

상기와같이 구성된 본 발명의 작용 및 효과를 설명하면 다음과 같다.Referring to the operation and effects of the present invention configured as described above are as follows.

피스톤(11)이 실린더(10) 내에서 상하로 왕복운동하면 피스톤(11)의 링홈(12) 내에 설치되어 있는 오일링(13)이 실린더(10) 내벽면에 밀착한 상태로 접동하면서 실린더(10) 내벽면에 일정한 두께, 즉, 최소한의 유막두께가 남아있도록 한다.When the piston 11 reciprocates up and down within the cylinder 10, the oil ring 13 installed in the ring groove 12 of the piston 11 slides in a state of being in close contact with the inner wall surface of the cylinder 10. 10) Make sure that a certain thickness, that is, a minimum film thickness, remains on the inner wall surface.

본 발명에서는 실린더(10)의 형상 변형에 대해 오일링(13) 추종하여 슬라이딩 이동하기 때문에 실린더(10)의 내벽면이 굴곡지더라도 전체적으로 동일한 두께의 유막을 형성할 수 있게된다.In the present invention, since the oil ring 13 is slid and moved against the shape deformation of the cylinder 10, even if the inner wall surface of the cylinder 10 is bent, an oil film having the same thickness as a whole can be formed.

즉, 실린더(10) 내벽면에 돌출부위가 존재할때 그부분을 오일링(13)이 통과하게되면 오일링(13)이 링홈(12) 안쪽으로 밀리게되고, 그 밀림력이 익스펜더(14)의 경사돌기부(16)로 전달되면서 익스펜더(14)의 결합부(17)가 가이드레일(18)의 리턴스프링(19)의 탄성을 이기고 도면상의 좌측으로 슬라이딩 이동하므로서, 오일링(13)의 움직임을 허용하게되는 것이다.That is, when the oil ring 13 passes through the portion when the protrusion is present on the inner wall surface of the cylinder 10, the oil ring 13 is pushed into the ring groove 12, the pushing force is the expander 14 As the coupling portion 17 of the expander 14 is transmitted to the inclined protrusion 16 of the guide rail 18 to overcome the elasticity of the return spring 19 of the guide rail 18 and slides to the left in the drawing, the movement of the oil ring 13 is performed. Will be allowed.

그리고, 실린더(10) 내벽면이 평평하게 유지된 부분에서는 리턴스프링(19)의 탄성력에 의해 결합부(17)가 외곽으로 밀리면서 익스펜더(14)가 오일링(13)을 실린더(10) 벽면으로 밀어내므로 오일링(13)이 실린더벽면에 밀착된 상태로 동작하게되는 것이다.In the portion where the inner wall of the cylinder 10 is kept flat, the coupling part 17 is pushed outward by the elastic force of the return spring 19 and the expander 14 pushes the oil ring 13 to the wall of the cylinder 10. Since the oil ring 13 is in close contact with the cylinder wall surface is to be operated.

상기 설명과같이 본 발명은 실린더(10)의 내벽면에 형상변형부분이 존재할때 그 형상변형 부분에서 익스펜더(14)가 가이드레일(18)을 따라 슬라이딩 이동하면서 오일링(13)의 움직임을 탄력적으로 허용하게되므로 오일링(13)이 실린더(10) 내벽면의 형상변형에 대해 추종하여 밀착된 상태로 상하로 움직이면서 오일유막을 일 정하게 유지시키게되는 것이다.As described above, according to the present invention, when the shape deformation portion is present on the inner wall surface of the cylinder 10, the expander 14 slides along the guide rail 18 in the shape deformation portion so as to elastically move the movement of the oil ring 13. Since the oil ring 13 follows the shape deformation of the inner wall surface of the cylinder 10, the oil ring 13 moves up and down in a close contact state to maintain the oil film uniformly.

이상에서 설명한 바와같이 본 발명은 피스톤의 링홈 내부에 오일링을 받쳐주면서 외곽으로 밀어내는 익스펜더를 장착하되, 익스펜더의 하측에 리턴스프링이 감겨있는 가이드레일을 형성하고, 상기 가이드레일에 익스펜더를 결합하여 익스펜더가 가이드레일을 따라 수평 슬라이딩 이동하면서 오일링이 실린더의 벽면 형상에 추종하여 출몰하도록 하므로서, 실린더의 형상변경에 따른 오일링의 추종성이 매우 향상되어 항상 최소한의 유막두께를 유지할 수 있도록 한 추종성이 개선된 오일링 장착구조를 제공하는 효과를 기대할 수 있다.As described above, the present invention is equipped with an expander that pushes outward while supporting the oil ring inside the ring groove of the piston, and forms a guide rail wound with a return spring on the lower side of the expander, and combines the expander with the guide rail. As the expander slides horizontally along the guide rail, the oil ring follows the wall shape of the cylinder and floats out, so that the followability of the oil ring is greatly improved due to the change of the shape of the cylinder, so that the traceability can always be maintained at the minimum film thickness. The effect of providing an improved oil ring mounting structure can be expected.

Claims (3)

피스톤의 측면에 링홈이 요입 형성되고, 그 링홈 내에 오일링이 장착되는 것에 있어서,In the ring groove is formed in the side of the piston, the oil ring is mounted in the ring groove, 상기 오일링을 받쳐주면서 외곽으로 밀어내어 오일링이 실린더 벽면에 밀착되도록 하는 익스펜더를 링홈내에 장착하되,While supporting the oil ring is pushed outward so that the oil ring is in close contact with the cylinder wall mounted in the ring groove, 상기 익스펜더의 하측에 익스팬더의 수평방향 슬라이딩 움직임을 탄력적으로 안내하는 가이드레일을 형성한 것을 특징으로 하는 추종성이 개선된 오일링 장착구조.The oil ring mounting structure with improved followability, characterized in that the guide rail for elastically guiding the horizontal sliding movement of the expander to the lower side of the expander. 제 1 항에 있어서, The method of claim 1, 상기 익스펜더는 오일링을 하측에서 받쳐주는 수평받침부가 구비되고, 그 수평받침부의 내측으로 오일링의 내측부를 지지하는 경사돌기부가 상향 돌출되며, 상기 수평받침부의 저면에는 가이드레일에 습동가능하게 끼워지는 결합부가 형성된 것임을 특징으로 하는 추종성이 개선된 오일링 장착구조.The expander is provided with a horizontal support portion for supporting the oil ring from the lower side, the inclined protrusion for supporting the inner portion of the oil ring protrudes upwardly into the horizontal support portion, the bottom of the horizontal support portion is inserted into the guide rail slidably Oil ring mounting structure with improved followability, characterized in that the coupling portion is formed. 제 1 항 또는 제 2 항에 있어서, The method according to claim 1 or 2, 상기 가이드레일은 익스펜더의 결합부가 끼워지도록 봉형상으로 형성하되 그 일단에는 결합부를 밀어내는 방향으로 탄성을 가하는 리턴스프링이 감겨져있는 것을 특징으로 하는 추종성이 개선된 오일링 장착구조.The guide rail is formed in the shape of a rod so that the engaging portion of the expander is fitted, the end of the oil ring mounting structure, characterized in that the return spring is applied to the elasticity in the direction to push the coupling portion is wound.
KR1020040046384A 2004-06-22 2004-06-22 Oil ling combination device KR100570028B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4183544A (en) 1977-05-06 1980-01-15 Goetzewerke, Friedrich Goetze Ag Multi-part piston oil ring
KR19990010825U (en) * 1997-08-30 1999-03-25 정몽규 Structure of piston ring
JP2001295926A (en) 2000-04-11 2001-10-26 Riken Corp Combination oil ring

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4183544A (en) 1977-05-06 1980-01-15 Goetzewerke, Friedrich Goetze Ag Multi-part piston oil ring
KR19990010825U (en) * 1997-08-30 1999-03-25 정몽규 Structure of piston ring
JP2001295926A (en) 2000-04-11 2001-10-26 Riken Corp Combination oil ring

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