JPS5943482Y2 - internal combustion engine piston rings - Google Patents
internal combustion engine piston ringsInfo
- Publication number
- JPS5943482Y2 JPS5943482Y2 JP4537878U JP4537878U JPS5943482Y2 JP S5943482 Y2 JPS5943482 Y2 JP S5943482Y2 JP 4537878 U JP4537878 U JP 4537878U JP 4537878 U JP4537878 U JP 4537878U JP S5943482 Y2 JPS5943482 Y2 JP S5943482Y2
- Authority
- JP
- Japan
- Prior art keywords
- piston
- internal combustion
- combustion engine
- ring
- edges
- 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.)
- Expired
Links
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Description
【考案の詳細な説明】
本考案はシリンダとピストンとの横断面を左右両側の円
弧と、これを結ぶ直線とからなる長円形とした内燃エン
ジンのピストンリングに関する。[Detailed Description of the Invention] The present invention relates to a piston ring for an internal combustion engine in which the cross section of a cylinder and a piston is an oval shape consisting of left and right circular arcs and a straight line connecting these arcs.
この種リングにおいては、例えば米国特許第２．４０９
，５５５号明細書に記載されているようにこれを左右両
側の円弧と、その両端を結ぶ両側の直線とに４分割し、
それぞれの合い口をばねで弾発させたものは公知である
が、かくするときは合い口が４個所となり、その合い口
部のシール性に困難を来たすのみならず、特に直線部の
リングは単にピストンのリング溝内に保持される形状と
なるため、ピストンの摺動によりリングは溝内でフラッ
ピング或は溝内で摺動方向にたおれる等の現象を生じシ
ール性の低下、リンク溝の摩耗等の不具合を生ずる問題
点を有していた。In this type of ring, for example, U.S. Pat.
, 555, this is divided into four arcs on both the left and right sides and straight lines on both sides connecting both ends,
A ring in which each joint is spring-loaded with a spring is known, but when doing so, there are four joints, which not only makes it difficult to seal the joints, but also makes it difficult to seal the joints, especially in the straight parts. Since the shape is simply held within the ring groove of the piston, sliding of the piston may cause the ring to flap within the groove or collapse in the sliding direction within the groove, resulting in a decrease in sealing performance and damage to the link groove. This had the problem of causing problems such as wear.
本考案はかかる問題点を改良することを目的としたもの
で、ピストンリングは２分割の分割リングに構成し、而
も分割リングの端部には、それ自体を折曲して形成した
弾性端縁の当接により互に弾発させてシール性を向上さ
せたものである。The purpose of the present invention is to improve this problem, and the piston ring is constructed as a two-part split ring, and the end of the split ring has an elastic end formed by bending itself. The sealing performance is improved by making the edges spring into contact with each other.
これを図示実施例について説明すると３は内燃エンジン
を示し、該エンジン３のシリンダ１とピストン２とはそ
の横断面を左右両側の円弧とこれを結ぶ直線とからなる
長円形に形成され、そのピストン２に施されるピストン
リング４は、１つの円弧と１つの直線とからなる２個の
同一形状の分割リング４ａ、４ａに構成し、その端部の
肉厚を先端に向って順次肉薄に形成し、その端末を内方
に屈曲される折曲端縁４ｃ、４ｃに形成し、該端縁４ｃ
は各分割リング４ａの内側縁４ｄと合致させた。To explain this with reference to the illustrated embodiment, reference numeral 3 denotes an internal combustion engine, and the cylinder 1 and piston 2 of the engine 3 have an oval cross section consisting of circular arcs on both left and right sides and a straight line connecting them, and the piston The piston ring 4 applied to the piston ring 2 is composed of two divided rings 4a, 4a having the same shape, consisting of one circular arc and one straight line, and the thickness of the end portion thereof is made gradually thinner toward the tip. The ends thereof are formed into bent edges 4c, 4c that are bent inward, and the edges 4c are bent inwardly.
was matched with the inner edge 4d of each split ring 4a.
かくするとき分割リング４ａ、４ａは、その合せ部４ｂ
、４ｂによって互に張り合いピストン２のリング溝２ａ
内に安定した状態に施される。In this case, the split rings 4a, 4a are connected to the mating portion 4b.
, 4b, the ring groove 2a of the piston 2
It is applied in a stable state inside.
このように本考案によるときは長円形ピストン２に施す
ピストンリング４を１つの円弧と１つの直線とからなる
２個の同一形状の分割リング４ａｙ４ａに構威し、その
分割リング４ａ、４ａの端部の肉厚を先端に向って順次
肉薄に形成し、その端末を内方に屈曲される弾性の折曲
端縁４ｃ、４ｃに形威し、該端縁４ｃ、４ｃで互に弾接
させてピストン２のリング溝２ａ内に装着したものであ
るから直線部は円弧部を介してリング溝内に固定される
ため直線部の剛性が高まりフラッピング或はたおれを減
少してシール性を向上することができ又、折曲端縁４ｃ
、４ｃは先端の肉薄部を折曲したため曲率を小さく曲屈
させて合せ部４ ｂ ｊ ４ ｂとシリンダ内壁とで作
られる隙間を減少させて該部のシール性を向上し更に、
１つの円弧と１つの直線とからなる分割リング４ａ、４
ａはその端縁４ｃ、４ｃで押圧されるため円弧部、直線
部の各各がシリンダ内壁に圧着されてシーリング効果を
一層高めることができる等の効果を有する。In this way, according to the present invention, the piston ring 4 to be attached to the oval piston 2 is constructed into two divided rings 4ay4a of the same shape consisting of one circular arc and one straight line, and the ends of the divided rings 4a and 4a are The thickness of the part is gradually thinned toward the tip, and the ends thereof are shaped into elastic bent edges 4c, 4c that are bent inward, and the edges 4c, 4c are brought into elastic contact with each other. Since the straight part is fixed in the ring groove 2a of the piston 2 through the circular arc part, the rigidity of the straight part increases, reducing flapping or folding and improving sealing performance. Also, the bent edge 4c
, 4c has a thin part at the tip bent, so the curvature is reduced to reduce the gap created between the mating part 4 b j 4 b and the inner wall of the cylinder, improving the sealing performance of the part, and further,
Divided rings 4a, 4 consisting of one circular arc and one straight line
Since a is pressed by its end edges 4c, 4c, each of the arcuate portion and the straight portion is pressed against the inner wall of the cylinder, which has the effect of further enhancing the sealing effect.
図面は本考案実施の−ｆｕを示すもので第１図は平面図
、第２図は第１図の■−■線截線面断面図３図は第１図
の徂−用線截断面図、第４図はその使用状態を示す裁断
面図である。
１・・・・・・シリンダ、２・・・・・・ピストン、２
ａ・・・・・・リンク溝、３・・・・・・内燃エンジン
、４・・・・・・ピストンリング、４ａ・・・・・・分
割リング、４ｃ・・・・・・折曲端縁。The drawings show -fu of the present invention; Fig. 1 is a plan view, Fig. 2 is a cross-sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 is a cross-sectional view cut along the cross-line of Fig. 1. , and FIG. 4 is a cutaway view showing the state of use. 1...Cylinder, 2...Piston, 2
a...link groove, 3...internal combustion engine, 4...piston ring, 4a...divided ring, 4c...bent end edge.
Claims (1)
、これを結ぶ直線とからなる長円形とした内燃エンジン
において、前記ピストン２に施すピストンリング４を、
１つの円弧と１つの直線とからなる２個の同一形状の分
割リング４ａ 、 ４ａに構成し、該分割リング４ａ、
４ａの端部の肉厚を先端に向って順次肉薄に形成し、そ
の端末を内方に屈曲される弾性の折曲端縁４ｃ、４ｃに
形成し、該端縁４ｃ 、４ｅで互に弾接させて前記ピス
トン２のリング溝２ａ内に装着させて成る内燃エンジン
のピストンリング。In an internal combustion engine in which the cross section of the cylinder 1 and the piston 2 is an oval shape consisting of left and right circular arcs and a straight line connecting these, the piston ring 4 applied to the piston 2 is
It is composed of two divided rings 4a, 4a having the same shape, each consisting of one circular arc and one straight line, and the divided rings 4a,
The thickness of the end portion of 4a is gradually thinned toward the tip, and the ends thereof are formed into elastic bent edges 4c, 4c that are bent inward, and the edges 4c, 4e are elastically bent toward each other. A piston ring for an internal combustion engine, which is installed in the ring groove 2a of the piston 2 in contact with the piston ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4537878U JPS5943482Y2 (en) | 1978-04-08 | 1978-04-08 | internal combustion engine piston rings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4537878U JPS5943482Y2 (en) | 1978-04-08 | 1978-04-08 | internal combustion engine piston rings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54148708U JPS54148708U (en) | 1979-10-16 |
| JPS5943482Y2 true JPS5943482Y2 (en) | 1984-12-24 |
Family
ID=28923519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4537878U Expired JPS5943482Y2 (en) | 1978-04-08 | 1978-04-08 | internal combustion engine piston rings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5943482Y2 (en) |
-
1978
- 1978-04-08 JP JP4537878U patent/JPS5943482Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54148708U (en) | 1979-10-16 |
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