JPH1089476A - Side rail of built-up oil control ring - Google Patents

Side rail of built-up oil control ring

Info

Publication number
JPH1089476A
JPH1089476A JP24825396A JP24825396A JPH1089476A JP H1089476 A JPH1089476 A JP H1089476A JP 24825396 A JP24825396 A JP 24825396A JP 24825396 A JP24825396 A JP 24825396A JP H1089476 A JPH1089476 A JP H1089476A
Authority
JP
Japan
Prior art keywords
side rail
axial
width
ring groove
wall surface
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
JP24825396A
Other languages
Japanese (ja)
Inventor
Hideo Okamoto
秀雄 岡本
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.)
Nippon Piston Ring Co Ltd
Original Assignee
Nippon Piston Ring Co Ltd
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 Nippon Piston Ring Co Ltd filed Critical Nippon Piston Ring Co Ltd
Priority to JP24825396A priority Critical patent/JPH1089476A/en
Publication of JPH1089476A publication Critical patent/JPH1089476A/en
Pending legal-status Critical Current

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  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent a stepped abrasion being produced on the axial wall surface of a piston-ring groove and to reduce the consumption of lubricating oil upon making improvements in sealability. SOLUTION: This side rail 1 is provided with an abutment part, fitted in externally with a piston-ring groove, and installed as a paired set, and in this constitution, it is constituted so as to seal a cylinder wall surface by a peripheral sealing surface 4 after being pressed by a space expander to be pinchably installed and also to seal an axial wall surface of the ring groove by an axial sealing surface 5. In this case, grinding work by an abrasive belt is applied to an angular part between an end part 3 of the abutment part and the axial sealing surface, and thus it is provided with a chamfer 6 as in such a compound form that looking from the radial direction, peripheral width is less than 1.6mm and axial width is a range of 0.001mm to 0.015mm, while a circular arc is more than 3.0mm in radius of curvature.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、内燃機関のピスト
ンのリング溝に装着される組合せオイルリングのサイド
レールに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side rail of a combined oil ring mounted in a ring groove of a piston of an internal combustion engine.

【0002】[0002]

【従来の技術】一対のサイドレールとスペースエキスパ
ンダとから成る組合せオイルリングのサイドレールは、
内燃機関の運転中に、合口部のシャープエッジによりピ
ストンのリング溝の軸方向壁面に段付磨耗を発生させる
という問題がある。これを防止するため、従来は、サイ
ドレールの合口部の角部に面取り部を設ける等の対策が
講じられており、例えば、実公平7−21964によれ
ば、サイドレールの合口部の端面と軸方向シール面との
角部に、曲率半径0.01mm〜1.5mmの4分の1
円弧から成る、なめらかな形状に形成された面取り部を
設けている。
2. Description of the Related Art A side rail of a combined oil ring composed of a pair of side rails and a space expander,
During operation of the internal combustion engine, there is a problem that a sharp edge at the abutment causes stepped wear on the axial wall surface of the ring groove of the piston. In order to prevent this, conventionally, measures such as providing a chamfered portion at the corner of the joint portion of the side rail are taken. For example, according to Japanese Utility Model Publication No. 7-21964, the end face of the joint portion of the side rail is A quarter of the radius of curvature of 0.01 mm to 1.5 mm is formed at the corner with the axial seal surface.
A chamfered portion formed of a circular arc and having a smooth shape is provided.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、上述し
た従来の、サイドレールの合口部の端面と軸方向シール
面との角部に、曲率半径0.01mm〜1.5mmの4
分の1円弧から成る、なめらかな形状に形成された面取
り部を設けた組合せオイルリングのサイドレールによれ
ば、ピストンのリング溝の軸方向壁面に発生する段付磨
耗を防止するという点では所望の効果を達成することが
できる一方、サイドレールの合口部の隙間面積を大きく
してシール性を低下させ、潤滑油消費量を増加させると
いう問題を発生させた。
However, at the corner between the end face of the abutting portion of the side rail and the sealing surface in the axial direction as described above, the radius of curvature of 0.01 mm to 1.5 mm is set.
According to the side rail of the combined oil ring provided with a smooth chamfer formed of a 1 / arc, it is desirable in terms of preventing stepped abrasion occurring on the axial wall surface of the ring groove of the piston. On the other hand, while the effect of (1) can be achieved, the problem that the sealing area is reduced by increasing the clearance area at the abutment portion of the side rail and the lubricating oil consumption increases is caused.

【0004】本発明はこのような問題を解決するために
なされたもので、ピストンのリング溝の軸方向壁面に発
生する段付磨耗を防止すると共に、シール性を向上させ
て潤滑油消費量を低減することができる、組合せオイル
リングのサイドレールを提供することを目的とする。
The present invention has been made in order to solve such a problem, and it is intended to prevent stepped abrasion occurring on the axial wall surface of a ring groove of a piston, improve sealing performance, and reduce lubricating oil consumption. It is an object to provide a combined oil ring side rail which can be reduced.

【0005】[0005]

【課題を解決するための手段】上述の目的を達成するた
めに、本発明の組合せオイルリングのサイドレールは、
合口部を有しピストンのリング溝を外嵌して一対として
配設され、挟装するスペースエキスパンダに押圧されて
外周シール面によりシリンダ壁面をシールすると共に軸
方向シール面によりリング溝の軸方向壁面をシールする
組合せオイルリングのサイドレールにおいて、合口部の
端面と軸方向シール面との角部に、半径方向から見て周
方向幅が1.6mm以下、軸方向幅が0.001mm〜
0.010mmであり、かつ局所的にも周方向幅が軸方
向幅より大きく、さらに曲率半径3.0mm以上の円弧
が複合した滑らかなダレ形状に形成された面取り部を備
えたことにある。
In order to achieve the above-mentioned object, a side rail of a combined oil ring according to the present invention comprises:
It has an abutment and is disposed as a pair with the ring groove of the piston fitted outside, and is pressed by the space expander to be sandwiched, seals the cylinder wall surface with the outer peripheral sealing surface, and the axial direction of the ring groove by the axial sealing surface. In a side rail of a combined oil ring that seals a wall surface, a circumferential width when viewed from a radial direction is 1.6 mm or less and an axial width is 0.001 mm or less at a corner between an end surface of an abutment portion and an axial sealing surface.
It is provided with a chamfer formed in a smooth sagging shape in which an arc having a radius of curvature of 3.0 mm or more and a circumferential width larger than the axial width is 0.010 mm locally.

【0006】[0006]

【発明の実施の形態】上述の組合せオイルリングのサイ
ドレールは、合口部の端面と軸方向シール面との角部
に、半径方向から見て周方向幅が1.6mm以上及び軸
方向幅が0.001mm〜0.015mmであり、かつ
局所的にも周方向幅が軸方向幅より大きく、さらに曲率
半径3.0mm以上の円弧が複合した滑らかなダレ形状
に形成された面取り部を備えている。ここで、ピストン
のリング溝の軸方向壁面に発生する段付磨耗を防止する
ためには、サイドレールの角部にシャープエッジがなく
且つ周方向に滑らかな面取り部を有していれば足りる一
方、軸方向には必ずしも長い面取り部を必要としない。
従って、本発明の組合せオイルリングのサイドレールに
よれば、サイドレールの合口部の面取り効果を十分維持
することができると同時に、軸方向幅を小さくすること
によりサイドレールの合口部の隙間面積を大巾に減少さ
せた。また、軸方向幅が0.001mm未満の場合、又
は、局所的に周方向幅が軸方向幅以下となる場合には、
面取り効果を十分発揮することができず、ピストンのリ
ング溝の軸方向壁面に段付磨耗を発生させる可能性及び
溝摩耗を増大させる可能性がある一方、周方向幅が1.
6mmを超える場合、又は軸方向幅が0.015mmを
超える場合には、潤滑油消費量の低減が困難になる可能
性がある。なお、軸方向幅が0.015mmを超えても
溝摩耗の低減効果は少ない。複合した円弧の各曲率半径
が3.0mm以下の場合は段付摩耗を発生する可能性が
ある。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The side rail of the above-described combined oil ring has a circumferential width of at least 1.6 mm and an axial width as viewed from the radial direction at a corner between the end face of the joint portion and the axial sealing surface. A chamfered portion formed in a smooth sagging shape in which arcs having a width in the circumferential direction larger than the width in the axial direction, which is 0.001 mm to 0.015 mm, and locally having a radius of curvature of 3.0 mm or more. I have. Here, in order to prevent stepped abrasion occurring on the axial wall surface of the ring groove of the piston, it is only necessary to have no sharp edge at the corner of the side rail and to have a smooth chamfer in the circumferential direction. In addition, a long chamfer is not necessarily required in the axial direction.
Therefore, according to the side rail of the combined oil ring of the present invention, the chamfering effect of the joint of the side rail can be sufficiently maintained, and at the same time, the gap area of the joint of the side rail can be reduced by reducing the axial width. Greatly reduced. If the axial width is less than 0.001 mm, or if the circumferential width is locally smaller than the axial width,
While the chamfering effect cannot be sufficiently exhibited, there is a possibility that stepped wear may occur on the axial wall surface of the ring groove of the piston and that the groove wear may be increased.
If it exceeds 6 mm, or if the axial width exceeds 0.015 mm, it may be difficult to reduce the consumption of lubricating oil. It should be noted that even if the axial width exceeds 0.015 mm, the effect of reducing groove wear is small. If each radius of curvature of the combined arc is 3.0 mm or less, stepped wear may occur.

【0007】[0007]

【実施例】以下、本発明の実施例を、図1ないし図7を
参照して詳細に説明する。図1は、本発明に係る組合せ
オイルリングのサイドレール1を示し、サイドレール1
には、ピストン8(図2参照)への着脱を可能とするた
めの切断部、即ち、合口部2が配設される。サイドレー
ル1は、図2に示されるように、ピストン8のリング溝
9を外嵌して一対として配設される。サイドレール1
は、挟装するスペースエキスパンダ7に押圧されて外周
シール面4によりシリンダ壁面11をシールすると共
に、軸方向シール面5によりリング溝9の軸方向壁面1
0をシールする。図3及び図4に示されるように、サイ
ドレール1の合口部2の端面3と軸方向シール面5との
角部に、半径方向から見て周方向幅:L2 が1.6mm
以下、軸方向幅:L1 が0.001mm〜0.015m
mであり、かつ、局所的にも周方向幅:L2 が軸方向
幅:L1 より大きく、さらに、曲率半径が3.0mm以
上の円弧R1,R2,R3が複合した滑らかなダレ形状
の面取り部6を形成する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS. FIG. 1 shows a side rail 1 of a combined oil ring according to the present invention.
Is provided with a cutting portion for enabling attachment to and detachment from the piston 8 (see FIG. 2), that is, the abutment portion 2. As shown in FIG. 2, the side rails 1 are arranged as a pair with the ring groove 9 of the piston 8 fitted outside. Side rail 1
Is pressed by the space expander 7 to be sandwiched to seal the cylinder wall surface 11 with the outer peripheral sealing surface 4 and the axial wall surface 1 of the ring groove 9 by the axial sealing surface 5.
Seal 0. As shown in FIG. 3 and FIG. 4, the circumferential width: L 2 when viewed from the radial direction is 1.6 mm at the corner between the end face 3 of the abutment 2 of the side rail 1 and the axial sealing face 5.
Hereinafter, the axial width: L1 is 0.001 mm to 0.015 m
m, and a locally sagittal chamfered portion in which arcs R1, R2, and R3 each having a circumferential width: L2 larger than an axial width: L1 and a radius of curvature of 3.0 mm or more are locally formed. 6 is formed.

【0008】図5に示されるように、面取り部6の加工
はベルダ加工機20により行なう。ベルダ加工機20
は、図示しない駆動源に回転駆動されてサイドレール1
を載せて搬送する送りベルト21と、送りベルト21の
上方に配設され、研磨面が送りベルト21の送り方向に
図示しない駆動源により回転駆動されて、送りベルト2
1により搬送されるサイドレール1の上面を研磨する研
磨ベルト22とを備えた自動ベルト研磨機である。研磨
ベルト22は、送りベルト21より速い速度で走行して
サイドレール1の上面を研磨する。図6に示されるよう
に、面取り部6の加工は、サイドレール1の合口部2の
端面3をベルダ加工機20の送りベルト21の送り方向
に一致させて行なう。ベルダ加工機20の加工圧力、送
りベルト21の速度、研磨ベルト22の速度等を適切に
設定することにより、サイドレール1をこのように送り
ベルト21上に載せるだけで、合口部2の対向する両角
部を同時に加工することができると共に、面取り部6
は、半径方向から見て周方向幅が1.6mm以下及び軸
方向幅が0.001mm〜0.015mmであり、かつ
局所的にも周方向幅が軸方向幅より大きく、曲率半径が
3.0mm以上の円弧が複合した滑らかなダレ形状に、
自動的に加工される。
[0008] As shown in FIG. 5, the chamfered portion 6 is processed by a verder processing machine 20. Verda processing machine 20
Is driven by a drive source (not shown) to rotate the side rail 1.
And a polishing surface disposed above the feed belt 21, and the polishing surface is rotated by a drive source (not shown) in the feed direction of the feed belt 21, and the feed belt 2 is rotated.
1 is an automatic belt polishing machine provided with a polishing belt 22 for polishing the upper surface of the side rail 1 conveyed by the belt 1. The polishing belt 22 runs at a higher speed than the feed belt 21 and polishes the upper surface of the side rail 1. As shown in FIG. 6, the processing of the chamfered portion 6 is performed such that the end face 3 of the abutment portion 2 of the side rail 1 coincides with the feed direction of the feed belt 21 of the belt machine 20. By appropriately setting the processing pressure of the verder processing machine 20, the speed of the feed belt 21, the speed of the polishing belt 22, and the like, the side rail 1 is merely placed on the feed belt 21 in this manner, and the abutting portion 2 is opposed. Both corners can be machined at the same time and the chamfer 6
Has a circumferential width of not more than 1.6 mm and an axial width of 0.001 mm to 0.015 mm as viewed from the radial direction, and has a locally larger circumferential width than the axial width, and a radius of curvature of 3. Smooth sagging shape with composite arc of 0mm or more,
Automatically processed.

【0009】ピストン8のリング溝9の軸方向壁面10
に発生する段付磨耗を防止するためには、サイドレール
1の角部にシャープエッジがなく且つ周方向に滑らかな
面取り部を有していれば足り、軸方向には必ずしも長い
面取り部を必要としない。従って、本発明の組合せオイ
ルリングのサイドレール1によれば、サイドレール1の
合口部の面取り効果を十分維持することができると同時
に、軸方向幅を小さくすることによりサイドレールの合
口部の隙間面積を大巾に減少させ、潤滑油消費量を低減
することができる。また、軸方向幅:L1 が0.001
mm未満の場合、又は、局所的に周方向幅:L2 が軸方
向幅:L1 以下となる場合には、面取り効果を十分発揮
することができず、ピストン8のリング溝9の軸方向壁
面10に段付磨耗を発生させる可能性及び溝摩耗を増大
させる可能性がある一方、周方向幅:L2 が1.6mm
を超える場合又は軸方向幅:L1 が0.015mmを超
える場合には、潤滑油消費量の低減が困難になる可能性
がある。なお、軸方向幅が0.015mmを超えても溝
摩耗の低減効果は少ない。複合した円弧の各曲率半径が
3.0mm以下の場合は段付摩耗を発生する可能性があ
る。
Axial wall surface 10 of ring groove 9 of piston 8
In order to prevent stepped abrasion occurring on the side rails, it is sufficient that the side rails 1 have no sharp edges and have a smooth chamfer in the circumferential direction, and a long chamfer in the axial direction is necessarily required. And not. Therefore, according to the side rail 1 of the combined oil ring of the present invention, the effect of chamfering the joint of the side rail 1 can be sufficiently maintained, and at the same time, the gap at the joint of the side rail can be reduced by reducing the axial width. The area can be greatly reduced, and the consumption of lubricating oil can be reduced. The axial width: L1 is 0.001.
If it is less than 1 mm, or if the circumferential width: L2 is locally smaller than the axial width: L1, the chamfering effect cannot be sufficiently exhibited, and the axial wall surface 10 of the ring groove 9 of the piston 8 cannot be obtained. May cause stepped wear and increase groove wear, while the circumferential width: L2 is 1.6 mm
When the width L1 exceeds 0.015 mm or when the axial width L1 exceeds 0.015 mm, it may be difficult to reduce the consumption of lubricating oil. It should be noted that even if the axial width exceeds 0.015 mm, the effect of reducing groove wear is small. If each radius of curvature of the combined arc is 3.0 mm or less, stepped wear may occur.

【0010】なお、面取り部6は、図7に示されるよう
に、サイドレール1の合口部2の端面3と軸方向シール
面5及びその反対面5aとの両方の角部に設けてサイド
レール1の両面使用が可能となるようにしてもよい。
As shown in FIG. 7, the chamfered portions 6 are provided at both corners of the end face 3 of the joint portion 2 of the side rail 1 and the axial sealing face 5 and the opposite face 5a. One of the two-sided use may be made possible.

【0011】[0011]

【発明の効果】以上詳細に説明したように、本発明の組
合せオイルリングのサイドレールは、合口部の端面と軸
方向シール面との角部に、半径方向から見て周方向幅が
1.6mm以下、軸方向幅が0.001mm〜0.01
5mmであり、かつ局所的にも周方向幅が軸方向幅より
大きく、曲率半径が3.0mm以上の円弧が複合した滑
らかなダレ形状に形成された面取り部を備え、サイドレ
ールの合口部の面取り効果を維持しつつ、合口部の隙間
面積を大巾に減少させたので、ピストンのリング溝の軸
方向壁面に発生する段付磨耗を防止すると共に、シール
性を向上させて潤滑油消費量を低減することができると
いう優れた効果を奏する。
As described in detail above, the side rail of the combined oil ring of the present invention has a circumferential width of 1.1 at the corner between the end face of the abutment and the axial sealing face as viewed from the radial direction. 6 mm or less, axial width 0.001 mm to 0.01
5 mm, and locally has a circumferential width larger than the axial width and a chamfered portion formed in a smooth sag shape in which an arc having a radius of curvature of 3.0 mm or more is compounded. The gap area at the abutment has been greatly reduced while maintaining the chamfering effect, preventing stepped abrasion that occurs on the axial wall surface of the ring groove of the piston and improving the sealing performance, thus improving lubrication oil consumption. This has an excellent effect that it can be reduced.

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

【図1】 本発明に係る組合せオイルリングのサイドレ
ールを示す平面図である。
FIG. 1 is a plan view showing a side rail of a combination oil ring according to the present invention.

【図2】 図1のサイドレール1の内燃機関への取付け
状態を示す断面正面図である。
FIG. 2 is a sectional front view showing a state in which the side rail 1 of FIG. 1 is attached to an internal combustion engine.

【図3】 図1のサイドレール1の面取り部6を示す斜
視図である。
FIG. 3 is a perspective view showing a chamfered portion 6 of the side rail 1 of FIG.

【図4】 図3の面取り部6の詳細形状を示す、サイド
レール1の半径方向から見た図である。
4 is a view showing the detailed shape of the chamfered portion 6 in FIG. 3, as viewed from the radial direction of the side rail 1. FIG.

【図5】 ベルダ加工機の概略構成を示す正面図であ
る。
FIG. 5 is a front view showing a schematic configuration of a verder processing machine.

【図6】 図5のベルダ加工機20によりサイドレール
1を加工する場合の加工方向を示す平面図である。
6 is a plan view showing a processing direction when processing the side rail 1 by the verder processing machine 20 of FIG.

【図7】 別の実施例のサイドレール合口部を半径方向
から見た拡大図である。
FIG. 7 is an enlarged view of a side rail abutment portion of another embodiment viewed from a radial direction.

【符号の説明】[Explanation of symbols]

1 サイドレール、2 合口部、3 端面、4 外周シ
ール面、5 軸方向シール面、5a 反対面、6 面取
り部、7 スペースエキスパンダ、8 ピストン、9
リング溝、10 軸方向壁面、11 シリンダ壁面、2
0 ベルダ加工機、21 送りベルト、22 研磨ベル
ト、L1 軸方向幅、L2 周方向幅、R1 円弧、R
2 円弧、R3 円弧
1 side rail, 2 joints, 3 end faces, 4 outer seal faces, 5 axial seal faces, 5a opposite faces, 6 chamfers, 7 space expanders, 8 pistons, 9
Ring groove, 10 axial wall surfaces, 11 cylinder wall surfaces, 2
0 Belder processing machine, 21 feed belt, 22 polishing belt, L1 axial width, L2 circumferential width, R1 arc, R
2 arcs, R3 arcs

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 合口部(2)を有しピストン(8)のリ
ング溝(9)を外嵌して一対として配設され、挟装する
スペースエキスパンダ(7)に押圧されて外周シール面
(4)によりシリンダ壁面(11)をシールすると共に
軸方向シール面(5)により前記リング溝の軸方向壁面
(10)をシールする組合せオイルリングのサイドレー
ルにおいて、前記合口部の端面(3)と前記軸方向シー
ル面との角部に、研磨ベルトによる加工を施して、周方
向幅が軸方向幅より大きい滑らかなダレ形状の面取り部
(6)を、半径方向から見て周方向幅(L2 )が1.6
mm以下、軸方向幅(L1 )が0.001mm〜0.0
15mmであり、かつ曲率半径が3.0mm以上の円弧
が複合してなるように形成したことを特徴とする組合せ
オイルリングのサイドレール(1)。
An outer peripheral sealing surface which is provided as a pair with an abutment portion (2) and externally fitted with a ring groove (9) of a piston (8), and is pressed by a space expander (7) to be sandwiched therebetween. In the side rail of the combined oil ring, which seals the cylinder wall surface (11) by (4) and seals the axial wall surface (10) of the ring groove by the axial sealing surface (5), the end face (3) of the abutment portion The corner between the and the axial sealing surface is processed with a polishing belt to form a smooth sag-shaped chamfer (6) having a circumferential width larger than the axial width to form a circumferential width ( L2) is 1.6
mm or less, and the axial width (L1) is 0.001 mm to 0.0
A side rail (1) for a combined oil ring, wherein an arc having a diameter of 15 mm and a radius of curvature of 3.0 mm or more is formed as a composite.
【請求項2】 前記面取り部(6)は、回転駆動されて
前記サイドレール(1)を載せて搬送する送りベルト
(21)と、前記送りベルトの上方に配設され研磨面が
前記送りベルトの送り方向に回転駆動されて前記送りベ
ルトにより搬送される前記サイドレールの上面を研磨す
る研磨ベルト(22)とを備えたベルダ加工機(20)
により加工されたことを特徴とする、請求項1に記載の
組合せオイルリングのサイドレール(1)。
2. The feed belt (21), which is rotatably driven to carry the side rail (1) thereon and conveys, and a chamfered portion (6) which is disposed above the feed belt and whose polishing surface is the feed belt. A polishing belt (22) having a polishing belt (22) that is driven to rotate in the feeding direction and polishes the upper surface of the side rail conveyed by the feed belt.
The side rail (1) of the combination oil ring according to claim 1, characterized in that the side rail (1) is processed by:
【請求項3】 前記面取り部(6)は、前記合口部
(2)の端面(3)を前記送りベルト(21)の送り方
向に一致させて加工されたことを特徴とする、請求項2
に記載の組合せオイルリングのサイドレール(1)。
3. The chamfered portion (6) is processed by aligning an end face (3) of the abutment portion (2) with a feed direction of the feed belt (21).
The side rail (1) of the combined oil ring described in (1).
JP24825396A 1996-09-19 1996-09-19 Side rail of built-up oil control ring Pending JPH1089476A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24825396A JPH1089476A (en) 1996-09-19 1996-09-19 Side rail of built-up oil control ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24825396A JPH1089476A (en) 1996-09-19 1996-09-19 Side rail of built-up oil control ring

Publications (1)

Publication Number Publication Date
JPH1089476A true JPH1089476A (en) 1998-04-07

Family

ID=17175428

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24825396A Pending JPH1089476A (en) 1996-09-19 1996-09-19 Side rail of built-up oil control ring

Country Status (1)

Country Link
JP (1) JPH1089476A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1341287A2 (en) * 2002-02-27 2003-09-03 Hitachi, Ltd. Rotor for rotating electric machine
JP2016098988A (en) * 2014-11-26 2016-05-30 株式会社リケン Ring member, its vertical direction discrimination jig and its vertical direction discrimination method
EP3321543A4 (en) * 2015-07-09 2019-03-06 Kabushiki Kaisha Riken Internal combustion engine piston ring

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1341287A2 (en) * 2002-02-27 2003-09-03 Hitachi, Ltd. Rotor for rotating electric machine
EP1341287A3 (en) * 2002-02-27 2005-11-09 Hitachi, Ltd. Rotor for rotating electric machine
JP2016098988A (en) * 2014-11-26 2016-05-30 株式会社リケン Ring member, its vertical direction discrimination jig and its vertical direction discrimination method
EP3321543A4 (en) * 2015-07-09 2019-03-06 Kabushiki Kaisha Riken Internal combustion engine piston ring
US10670146B2 (en) 2015-07-09 2020-06-02 Kabushiki Kaisha Riken Piston ring for combustion engine

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