JPH05231542A - Oil ring equipped with coil - Google Patents

Oil ring equipped with coil

Info

Publication number
JPH05231542A
JPH05231542A JP6997892A JP6997892A JPH05231542A JP H05231542 A JPH05231542 A JP H05231542A JP 6997892 A JP6997892 A JP 6997892A JP 6997892 A JP6997892 A JP 6997892A JP H05231542 A JPH05231542 A JP H05231542A
Authority
JP
Japan
Prior art keywords
oil ring
oil
main body
outer peripheral
ring
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP6997892A
Other languages
Japanese (ja)
Inventor
Hiroshi Watanabe
渡辺  弘
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Riken Corp
Original Assignee
Riken Corp
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.)
Filing date
Publication date
Application filed by Riken Corp filed Critical Riken Corp
Priority to JP6997892A priority Critical patent/JPH05231542A/en
Publication of JPH05231542A publication Critical patent/JPH05231542A/en
Pending legal-status Critical Current

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Landscapes

  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

PURPOSE:To provide an oil ring equipped with a coil having a circumferential clearance groove in its outer peripheral sliding surface so that the rise of oil from the abutment portion of the oil ring can be prevented. CONSTITUTION:The outer peripheral surface of the abutment portion of an oil ring 1 is not provided with a clearance groove 5 but is formed into a flat surface, and the particular abutment configuration of double-angled type is provided vertically reversely with respect to that of a compression ring so as to block a passage through which oil rises.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、内燃機関及び圧縮機等
のピストンとシリンダとの間からのオイル上りを防止す
るためピストン外周面に設けられたリング溝に装着され
るオイルリングに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil ring mounted in a ring groove provided on an outer peripheral surface of a piston for preventing oil from rising between a piston and a cylinder of an internal combustion engine and a compressor.

【0002】[0002]

【従来の技術】内燃機関及び圧縮機等のオイルリングと
しては、図7に側面図、図8に断面図を示す如く、外周
摺動面の高さ方向中央部に周方向に全周に亘って逃げ溝
5が延設され、内周面との間に通孔6が設けられたオイ
ルリング本体1と、これに張りを与えるためその内周面
に接して配設されたコイルスプリング2とより構成され
たものが広く使用されている。
2. Description of the Related Art As an oil ring for an internal combustion engine, a compressor, etc., as shown in the side view of FIG. 7 and the sectional view of FIG. An oil ring main body 1 having a clearance groove 5 extending therethrough and a through hole 6 provided between the oil ring main body 1 and a coil spring 2 arranged in contact with the inner peripheral surface of the oil ring main body 1 to provide tension to the oil ring main body 1. The one composed of more is widely used.

【0003】その場合、逃げ溝5が合い口部7迄設けら
れているので、複雑な形状の合い口を設けることは困難
であり、一般に図7に示す如く直角合い口(ストレート
合い口)、あるいは斜合い口が採用されている。その結
果、合い口隙間からまともに潤滑油が上昇すると云う問
題点があった。
In this case, since the relief groove 5 is provided up to the abutment portion 7, it is difficult to provide an abutment having a complicated shape. Generally, as shown in FIG. 7, a right-angled abutment (straight abutment), Alternatively, a crossing mouth is adopted. As a result, there is a problem that the lubricating oil rises straight from the gap of the abutment.

【0004】[0004]

【発明が解決しようとする課題】本発明は上記構成の従
来のコイルスプリング付きのオイルリングの合い口部か
らの潤滑油の漏洩の問題点にかんがみ、簡単な構成で潤
滑油の上りを防止することのできるオイルリングを提供
することを課題とする。
SUMMARY OF THE INVENTION In view of the problem of leakage of lubricating oil from the mating portion of the conventional oil ring with a coil spring having the above structure, the present invention prevents the lubricating oil from rising with a simple structure. It is an object to provide an oil ring that can be used.

【0005】[0005]

【課題を解決するための手段】本発明のオイルリング
は、上記の課題を解決するため、上記構成のオイルリン
グにおいて、オイルリング本体合い口部の外周面には逃
げ溝を設けず平坦面とし、オイルリングの一方の端部に
は、外周面の圧縮側の隅角部に周方向に同一断面形状の
突出部を設け、オイルリング本体の他方の端部には、上
記突出部に対応する隅角部に、該突出部の断面形状及び
長さと等しい断面形状及び長さの切欠き部を設け上記突
出部の上面の隅角部からの幅がシリンダとピストンとの
最大間隙より大きいことを特徴とする。
In order to solve the above-mentioned problems, the oil ring of the present invention has a flat surface without an escape groove on the outer peripheral surface of the oil ring body mating portion in the above-mentioned structure. , One end of the oil ring is provided with a projection having the same cross-sectional shape in the circumferential direction at the corner of the outer peripheral surface on the compression side, and the other end of the oil ring main body corresponds to the projection. A notch having a cross-sectional shape and length equal to the cross-sectional shape and length of the protrusion is provided in the corner, and the width of the upper surface of the protrusion from the corner is larger than the maximum gap between the cylinder and the piston. Characterize.

【0006】上述のオイルリングの合い口部の構成は、
一般にブローバイ防止のためにコンプレッションリング
の合い口部に採用されているダブルアングル型に代表さ
れる特殊合い口形状を上下逆方向に設けたものに他なら
ない。したがって、合い口部には下方からのオイル上り
を許容する通路はなくなりオイル上りは防止される。
The structure of the abutment portion of the oil ring described above is
It is none other than that the special abutment shape typified by the double angle type, which is generally adopted in the abutment portion of the compression ring for preventing blow-by, is provided upside down. Therefore, there is no passage for allowing oil to rise from below at the mating portion, and oil rise is prevented.

【0007】[0007]

【実施例】以下に、本発明の実施例を図面に基づいて詳
細に説明する。図1は本発明の実施例のオイルリングの
平面図、図2はその側面図、図3は図2のIII − III線
による合い口部の断面図、図4は合い口部の斜視図であ
る。一般部の断面は、図8で説明した従来のオイルリン
グの断面と変るところはない。
Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is a plan view of an oil ring according to an embodiment of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a cross-sectional view of an abutment portion taken along line III-III of FIG. 2, and FIG. 4 is a perspective view of the abutment portion. is there. The cross section of the general portion is no different from the cross section of the conventional oil ring described in FIG.

【0008】これらの図より明らかな如く、合い口部以
外の形状は従来のオイルリングと異るところはない。し
かし、図1、図2より明らかな如く、合い口部7では、
ある長さに亘ってオイルリング本体1に逃げ溝5が設け
られておらず、したがってこの範囲では、オイルリング
本体1の外周面は平坦になっている。そこで、この部分
に、オイルリング本体1の一方の端部には図3及び図4
に示すように外周面の上側(圧縮側)の隅角部に周方向
に延びる三角形状断面の突出部3が設けられ、もう一方
の端部には、上記突出部3に対応して、同じ隅角部に同
一断面、同一長さの三角形断面の切欠き4が設けられて
いる。突出部3の上面の幅はシリンダとピストンとの最
大間隙よりも大きい値とされている。
As is apparent from these figures, the shape other than the abutment portion is the same as that of the conventional oil ring. However, as is clear from FIG. 1 and FIG.
The escape groove 5 is not provided in the oil ring body 1 over a certain length, and thus the outer peripheral surface of the oil ring body 1 is flat in this range. Therefore, at this portion, one end of the oil ring body 1 is provided with the structure shown in FIG.
As shown in FIG. 3, a protrusion 3 having a triangular cross section extending in the circumferential direction is provided at a corner portion on the upper side (compression side) of the outer peripheral surface, and the other end has the same shape as the protrusion 3 described above. A notch 4 having the same cross section and the same length as the triangular cross section is provided at the corner portion. The width of the upper surface of the protrusion 3 is set to a value larger than the maximum gap between the cylinder and the piston.

【0009】以上の構成のオイルリングをピストンのオ
イルリング溝に装着した場合、オイルリング1の合い口
部7の下側でシリンダ内面とピストン周面の間に開いて
いる合い口部の隙間は、上側ではリング溝上側面で閉鎖
されているため、合い口からの通路は無くなり、オイル
上り防止に効果がある。
When the oil ring having the above construction is mounted in the oil ring groove of the piston, the gap between the inner surface of the cylinder and the peripheral surface of the piston below the opening 7 of the oil ring 1 is Since the upper side is closed by the upper side surface of the ring groove, there is no passage from the joint, which is effective in preventing oil from rising.

【0010】本発明のオイルリングと従来のストレート
合い口のオイルリングとの性能比較をするため、2本の
コンプレッションリングと1本のオイルリングとを装着
可能なピストンを有するコンプレッサで、コンプレッシ
ョンリングとしてストレート合い口のリングを使用し、
オイルリングとして本発明による上記構成の合い口を有
するリングとストレート合い口のリングとを取替えて、
オイルリングの合い口形状とオイル消費量との関係を計
測した。なお、テスト条件は次のとおりである。 ボアー:170×60V型2気筒 回 転:1100r.p.m 圧 力:5kg/cm2 連続24H
In order to compare the performance of the oil ring of the present invention with that of a conventional straight abutment oil ring, a compressor having a piston in which two compression rings and one oil ring can be mounted is used as a compression ring. Using a straight abutment ring,
Replacing the ring having the abutment of the above-mentioned configuration as the oil ring and the straight abutment ring,
The relationship between the shape of the abutment of the oil ring and the oil consumption was measured. The test conditions are as follows. Bore: 170 × 60V type 2 cylinders Rotation: 1100r.pm Pressure: 5kg / cm 2 Continuous 24H

【0011】テスト結果を図9に示す。図の左側Aはス
トレート合い口のオイルリングを用いた場合のオイル消
費量を示し、図の右側Bは本発明のオイルリングを用い
た場合のオイル消費量を示す。すなわち、夫々2回計測
した平均値でAは2.65cc/hr、Bは2.35cc/hrであ
った。
The test results are shown in FIG. The left side A of the figure shows the oil consumption when the oil ring of the straight abutment is used, and the right side B of the figure shows the oil consumption when the oil ring of the present invention is used. That is, A was 2.65 cc / hr and B was 2.35 cc / hr as the average value measured twice.

【0012】合い口部に設ける突出部3と切欠部4の断
面形状は、図3、図4に示す直角三角形形状に限定され
るものではなく、図5に示すような長方形や図6に示す
ような直角三角形の斜辺を円弧状にした形状等であって
も同じ作用効果を得ることができる。
The cross-sectional shapes of the projection 3 and the notch 4 provided at the mating portion are not limited to the right triangle shapes shown in FIGS. 3 and 4, and the rectangles shown in FIG. 5 and FIG. Even if the hypotenuse of such a right-angled triangle is arcuate, the same effect can be obtained.

【0013】[0013]

【効果】以上の如く、本発明によれば、比較的簡単な構
成で、オイルリングの合い口部からのオイル上昇を確実
に防止することができ、オイル消費量の低減に顕著な効
果を得ることができる。
As described above, according to the present invention, it is possible to reliably prevent the oil from rising from the mating portion of the oil ring with a relatively simple structure, and obtain a remarkable effect in reducing the oil consumption. be able to.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の実施例のオイルリングの平面図であ
る。
FIG. 1 is a plan view of an oil ring according to an embodiment of the present invention.

【図2】その側面図である。FIG. 2 is a side view thereof.

【図3】図2中のIII −III 線による合い口部の断面図
である。
FIG. 3 is a cross-sectional view of an abutment portion taken along line III-III in FIG.

【図4】その合い口部の斜視図である。FIG. 4 is a perspective view of the mating portion.

【図5】合い口部の突出部及び切欠き部の他の形状の例
を示す断面図である。
FIG. 5 is a cross-sectional view showing another example of the shape of the protrusion and the notch of the mating portion.

【図6】合い口部の突出部及び切欠き部の更に他の形状
の例を示す断面図である。
FIG. 6 is a cross-sectional view showing an example of still another shape of the protrusion and the notch of the mating portion.

【図7】従来のオイルリングの側面図である。FIG. 7 is a side view of a conventional oil ring.

【図8】その断面図である。FIG. 8 is a sectional view thereof.

【図9】本発明と従来のオイルリングを用いた装置のオ
イル消費量の比較実験結果を示すグラフである。
FIG. 9 is a graph showing a comparative experiment result of oil consumption of the device using the oil ring of the present invention.

【符号の説明】[Explanation of symbols]

1 オイルリング本体 2 コイルスプリング 3 突出部 4 切欠き部 5 逃げ溝 6 通孔 7 合い口部 1 Oil ring body 2 Coil spring 3 Projection part 4 Notch part 5 Escape groove 6 Through hole 7 Abutment part

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 外周摺動面に周方向に延びるオイル逃げ
溝を有するオイルリング本体と、これに張力を与えるた
めその内周面に沿って設けられたコイルスプリングとを
有する内燃機関等のコイル付きオイルリングにおいて、 オイルリング本体合い口部の外周面には上記逃げ溝を設
けず平坦面とし、オイルリング本体の一方の端部には、
外周面の高圧側の隅角部に周方向に一様断面形状の突出
部を設け、オイルリング本体の他方の端部には、上記突
出部に対応する隅角部に、該突出部の断面形状及び長さ
と等しい一様断面形状及び長さの切欠き部を設けたこと
を特徴とするオイルリング。
1. A coil for an internal combustion engine or the like having an oil ring main body having an oil relief groove extending in the circumferential direction on an outer peripheral sliding surface, and a coil spring provided along the inner peripheral surface for giving tension to the oil ring main body. In the attached oil ring, the outer peripheral surface of the mating portion of the oil ring main body is made flat without the above relief grooves, and one end of the oil ring main body is
A protrusion having a uniform cross-sectional shape is provided in the circumferential direction on the high-pressure side corner of the outer peripheral surface, and the other end of the oil ring main body has a corner corresponding to the above-mentioned protrusion, and a cross section of the protrusion. An oil ring provided with a notch having a uniform cross-sectional shape and length equal to the shape and length.
JP6997892A 1992-02-21 1992-02-21 Oil ring equipped with coil Pending JPH05231542A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6997892A JPH05231542A (en) 1992-02-21 1992-02-21 Oil ring equipped with coil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6997892A JPH05231542A (en) 1992-02-21 1992-02-21 Oil ring equipped with coil

Publications (1)

Publication Number Publication Date
JPH05231542A true JPH05231542A (en) 1993-09-07

Family

ID=13418262

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6997892A Pending JPH05231542A (en) 1992-02-21 1992-02-21 Oil ring equipped with coil

Country Status (1)

Country Link
JP (1) JPH05231542A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017113354A1 (en) * 2017-06-19 2018-12-20 Federal-Mogul Burscheid Gmbh piston oil control ring

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017113354A1 (en) * 2017-06-19 2018-12-20 Federal-Mogul Burscheid Gmbh piston oil control ring

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