JPS5867948A - Piston ring for stirling engine - Google Patents

Piston ring for stirling engine

Info

Publication number
JPS5867948A
JPS5867948A JP16429281A JP16429281A JPS5867948A JP S5867948 A JPS5867948 A JP S5867948A JP 16429281 A JP16429281 A JP 16429281A JP 16429281 A JP16429281 A JP 16429281A JP S5867948 A JPS5867948 A JP S5867948A
Authority
JP
Japan
Prior art keywords
ring
rings
cylinder
expander
center 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
JP16429281A
Other languages
Japanese (ja)
Inventor
Naoji Isshiki
一色　尚次
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP16429281A priority Critical patent/JPS5867948A/en
Publication of JPS5867948A publication Critical patent/JPS5867948A/en
Pending legal-status Critical Current

Links

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
    • 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
    • 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
    • F16J9/064—Rings with a flat annular side rail
    • F16J9/065—Spring expander with massive cross-section
    • 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
    • F16J9/12—Details
    • F16J9/20—Rings with special cross-section; Oil-scraping rings
    • F16J9/203—Oil-scraping rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G2243/00—Stirling type engines having closed regenerative thermodynamic cycles with flow controlled by volume changes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G2253/00—Seals
    • F02G2253/02—Reciprocating piston seals

Landscapes

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

Abstract

PURPOSE:To aim at preventing oil leaks and oil loss via the piston ring and as well reducing friction, by vertically holding a specific center ring between specific endless rings for forming a main body, and as well by holding the body at the top and bottom thereof between flexible plates. CONSTITUTION:A center ring 7 having a gap 8 is vertically held between endless rings 9, 10. An expander 11 is so arranged that its gap 12 is radially opposed to the gap 12 of the center ring 7, and therefore, urges the rings 9, 10 outward for making them in close contact with the internal surface 1 of the cylinder. In the vicinity of the gap 8, two bosses 13, 14 are provided for urging the rings 9, 10 outward so that the rings 9, 10 are closely contacted to the internal surface 1 of the cylinder. Further, flexible plates 15, 16 made of rubber or the like are applied on the top and bottom of the rings 9, 10, respectively, and are pushed against the upper and lower surfaces 4, 5 of a ring groove by the top and bottom ends of a holding ring 17. With this arrangement, the rings 7, 9, 10 are outwardly stretched by the expander 11, thereby gas leaks between the them and the internal surface 1 of the cylinder may be prevented.

Description

【発明の詳細な説明】 従来からスターリング機関のピストンリングとしては、
ガスの洩れの小さいこと、リングに加わる圧力差による
摩擦が小さいこと、オイルのせり上りや吹き抜けの小さ
いことの三つの特性が厳密に要求されてきた。[Detailed Description of the Invention] Traditionally, piston rings for Stirling engines include:
Three characteristics have been strictly required: low gas leakage, low friction due to the pressure difference applied to the ring, and low oil rise and blow-through.

まず洩れを減らす対策としてテフロンなどのエンドレス
リングを使用することが試みられてきたが、スタート時
の洩れが大きく、またオーバーロードにおける摩耗も大
きいという欠点があった。First, attempts have been made to use end rings made of Teflon or the like as a measure to reduce leakage, but these have the drawbacks of large leakage at the start and large wear during overload.

ついでリングの摩擦を減らすための対策として、極めて
薄い切れめっきリングを多数利用することが試みられて
きて、摩擦を減らすことに効果が認められたが、切れめ
からの小ｆ４ｆの洩れは完全には防止できない欠点が残
った〇 本発明１才切れめっきの薄い・、１央リングを二つのエ
ンドレスリングで上下から密杵してはさみ、かつ該中央
リングの切れめ付近の洩れを、該上下エンドレスリング
をその付近でシリンダー内面に押しつけることにより、
基土しようとするものであって、もニゲて摩擦と洩れも
少なくし、かつゴムやプラスチックのような板をこれら
のリング全体のさらに上下一方の両側にはさむことによ
ってオイルのせり上りも防止しようとするスターリング
機関用のピストンリングである０ 図によって本発明を説明する。＄１図は本発明の一実施
例の中央断面図であり、第２図は第１図の実施例を上方
から見た平面図である。１はスターリング機関のシリン
ダー内面、２はピストン本体であり、３はピストンの−
Ｌ方分割部分であり、４．５はピストンリングをはめる
リング溝の上面と下面であり、６はその溝の底面である
。Subsequently, as a measure to reduce ring friction, attempts have been made to use a large number of extremely thin cut plating rings, and this has been found to be effective in reducing friction, but the leakage of small f4f from the cut has not been completely eliminated. 〇There remains a defect that cannot be prevented.〇The thin plating of the present invention, which has been cut off for one year, is tightly punched from above and below with two end rings. By pressing the ring against the inner surface of the cylinder near that area,
This is intended to reduce friction and leakage, and also to prevent oil from rising up by inserting rubber or plastic plates on both sides of the entire ring. The present invention will be explained with reference to the drawing, which is a piston ring for a Stirling engine. Figure $1 is a central sectional view of one embodiment of the present invention, and Figure 2 is a plan view of the embodiment of Figure 1 viewed from above. 1 is the inner surface of the cylinder of the Stirling engine, 2 is the piston body, and 3 is the - of the piston.
It is an L-direction divided part, and 4.5 is the upper surface and lower surface of the ring groove in which the piston ring is fitted, and 6 is the bottom surface of the groove.

さて７は切れめを持つ中央リングで、８は膣中央リング
の切れめである。９．１０はいずれも切れめのないエン
ドレスリングで、シリンダー内面より若干小さい外径を
持っていて、両者は１ヌ１のように中央リングを上下に
サンドイッチ状にはさんで密着して設けであるｏｌｌは
エキスパンダーで、１２はその切れめであり、中央りン
グ７の−切れめ８と１８０°裏側に位置するようにして
あって、該エキスパンダー１１は全周にわたって中央リ
ング７を背面より押し、その外側をシリンダー内面ｌに
押りつけている。ざてこのエキスパンダーｌｌは大部分
が一様の厚さであるが、中央リングの切れめ８の付近で
その外方に二つの突起１３．１４・を全体の断面がコの
字状になるように有しており、その両突起の先端が該エ
ンドレスリング９．１０を背面より外方に押し、それら
によって押された該エンドレスリング９，１０の外面が
その付近だけシリンダーの内面１に中央り／グアと並ん
で密着するように構成しである。１５．１６はゴムやプ
ラスチック等の可撓性物質でできた薄板であって、環状
に設けた押えリング１７の上下７．Ｂｔｓ、ｔｑにおい
て溝の上面下面４と５に押さえつけられるようになって
いる。２０は圧力がＪ：　７Ｊ’からかかった時、薄板
１５と溝の上面４との間に生じたギャップを示している
。Now, number 7 is the center ring with a cut, and number 8 is the cut in the vagina center ring. 9.10 are all endless rings with an outer diameter slightly smaller than the inner surface of the cylinder, and both are sandwiched between the center ring above and below, like 1-1. A certain oll is an expander, and 12 is its cut, which is located 180 degrees behind the -cut 8 of the center ring 7, and the expander 11 pushes the center ring 7 from the back side all around the circumference, Its outer side is pressed against the inner surface of the cylinder l. Zateko's expander II has a uniform thickness for the most part, but it has two protrusions 13, 14 on the outside near the notch 8 in the center ring so that the overall cross section is U-shaped. The tips of both protrusions push the end rings 9 and 10 outward from the back surface, and the outer surfaces of the end rings 9 and 10 pushed by them are centered on the inner surface 1 of the cylinder only in that area. / It is structured so that it comes in close contact with the gua. Reference numerals 15 and 16 are thin plates made of a flexible material such as rubber or plastic, which are placed above and below the annular presser ring 17. Bts and tq are pressed against the upper and lower surfaces 4 and 5 of the groove. 20 indicates the gap formed between the thin plate 15 and the upper surface 4 of the groove when a pressure of J: 7J' is applied.

ついで作動を説明する。まずエキスパンダー１１によっ
て中央リングは全面にわたって外側に張られてシリンダ
ー内面１との間のガス洩Ｊ１を市めるが、中央リングの
切れめ部分８において開化があく。しかしその付近では
エキスパンダー１１に設けた突起１３．１４によって外
側に押し出さｔまたエンドレスリング９．１０が同時に
シリンダー内面ｌに密着するので、ちょうど切れ口８０
開化を上下からふさぐ形となり、切れめのガス洩れがほ
とんど防止されることとなる。また第１図のように上方
より圧力がかかつている時は、薄板１５は下方に押えつ
けられると共に、リング全体がＦ方に押され、溝の上面
４付近にはギャップ２０があき、また溝の下面５付近で
は密着し、そのためリング全体の奥側を通ってオ、イル
が通過することが該薄板１５．ｌｆｌによって°防止さ
れ、よってオイルのせり上りが防止きれる。“ 以上の作動により本ピストンリングはガス洩れを最少限
にすると共に、オイルのせり上りを防止する効果を有す
る。士た中央リングを極めて薄く作ることにより、リン
グ背面圧力による外側への張り出し力を小さくして、も
って摩擦力をも小さくできる効果を有する。Next, the operation will be explained. First, the center ring is expanded outward over its entire surface by the expander 11 to prevent gas leakage J1 between the center ring and the inner surface 1 of the cylinder, but the center ring is opened at the cut portion 8 of the center ring. However, in that vicinity, the protrusion 13.14 provided on the expander 11 pushes the end ring 9.10 outward, and the end ring 9.10 comes into close contact with the inner surface of the cylinder at the same time.
The opening is closed from above and below, and gas leakage at the cut end is almost completely prevented. Further, when pressure is applied from above as shown in Fig. 1, the thin plate 15 is pressed downward and the entire ring is pushed in the direction F, leaving a gap 20 near the upper surface 4 of the groove. The thin plate 15. is in close contact near the bottom surface 5 of the thin plate 15. Therefore, the oil and oil pass through the back side of the entire ring. lfl prevents the oil from rising. “ Due to the above operation, this piston ring has the effect of minimizing gas leakage and preventing oil from rising. It has the effect of reducing the friction force by making it smaller.

ついで他の実施例について説明する。第３図は本発明の
他の実施例の断面図であり、第４図は第３図の実施例の
切れめ付近を上より見た平面図である。第３図の２１は
金属製の自己張り出し力のある中央リングであゆ、２２
．２３は該中央リング２１を上下からはさむ金属製のエ
ンドレスリングである０他の部分は第１図の実施例と同
一部品に同じ番号を付けて説明を省いている。さてこの
実施例では１該中央リング２１の切れめ２４付近の左右
の背面近傍を貫通してビン２５．２６が図のように取り
つけられていて、その上下のピン先によって該エンドレ
スリング２２．２３の背面をひっかけて外側に張り出さ
せ、その付近だけでちょうど該エンドレスリング２２．
２３の外面がシリンダー内面１に中央リング２１と同時
に密着するように構成してあり、もって中央リング２１
の切れめ２４付近の開孔をふさぐ効果を有する。この実
施例は中央リングが金属性などで自己張り出しのあるリ
ングの際に適用でき、その効果は第１図の実施例と同じ
である。Next, other embodiments will be explained. FIG. 3 is a sectional view of another embodiment of the present invention, and FIG. 4 is a plan view of the vicinity of the cut end of the embodiment of FIG. 3, viewed from above. 21 in Fig. 3 is a central ring made of metal with a self-extending force; 22
．． Reference numeral 23 denotes a metal end ring that sandwiches the center ring 21 from above and below.Other parts are the same as those in the embodiment shown in FIG. In this embodiment, as shown in the figure, the pins 25 and 26 are attached to the central ring 21 through the vicinity of the left and right rear surfaces near the notch 24, and the end rings 22 and 26 are attached to the end rings 22 and 26 by their upper and lower pin tips. Hook the back side of the 22.
The outer surface of the cylinder 23 is configured to be in close contact with the inner surface 1 of the cylinder at the same time as the center ring 21, so that the center ring 21
This has the effect of closing the opening near the cut 24. This embodiment can be applied when the center ring is made of metal or the like and has a self-extending ring, and the effect is the same as that of the embodiment shown in FIG.

以上のように本発明は、ガス洩れの防止、摩擦の減少、
オイルのせり上りの防止のこの３つの吸求を十分に満た
すことができるスターリング機関用として好適のピスト
ンリングである。As described above, the present invention can prevent gas leakage, reduce friction,
This piston ring is suitable for use in Stirling engines and can sufficiently satisfy these three requirements of preventing oil from rising.

なおこの発明によるピストンリングは、スターリング機
関ばかりでなく、いかなるエンジンや流体機械に使用さ
れてもよい。また上下のエンドレスリング９，１０，２
２．２３等を外側に押しつける機構はどのような形式で
あってもよい。Note that the piston ring according to the present invention may be used not only for Stirling engines but also for any engine or fluid machine. Also upper and lower end wrestling 9, 10, 2
The mechanism for pressing 2.23 etc. outward may be of any type.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の１実施例の中央断面図である。 第２図は第１図のピストンリングを上方から姑た平面図
である。第３図は本発明の他の実施例の部分的断面図で
あり、第４図は第３図の実施例の切れめ付近のＸＸ′断
面を上方より見た平面図である。 １・・・ピストン、７，２１・・・中央リング、８．２
４・・・中央リングの切れ目、９．１０．２２．２３・
・・エンドレスリング、１１・・・エキスパンター、１
２・・・エキスパンダーの切れめ、１８．１４・・・エ
キスパンダーに設けた突起、２５．２ｔｉ・・・中央リ
シグに設けたピン、１５．１６・・・可撓性の板。 手　　続　　補　　正　　書 ２ 昭和５７年ｆ月ｚ２日 特許庁長官　島　１）春　樹　　殿 ■、事件の表示　　昭和５６年特許願第１６４２９２号
　　　　−２、発明の名称　　スターリング機関のピス
トンリング３補正をする者 事件との関係　　特許出願人 ４補正命令の日付　　自発補正 ５、補正により増加する発明の数　　　０６補正の対象FIG. 1 is a central sectional view of one embodiment of the present invention. FIG. 2 is a plan view of the piston ring shown in FIG. 1 taken from above. FIG. 3 is a partial sectional view of another embodiment of the present invention, and FIG. 4 is a plan view of the XX' cross section near the end of the embodiment of FIG. 3, viewed from above. 1... Piston, 7, 21... Center ring, 8.2
4...Central ring cut, 9.10.22.23.
...End Wrestling, 11...Expanter, 1
2... Expander cut, 18.14... Protrusion provided on the expander, 25.2ti... Pin provided on the central resig, 15.16... Flexible plate. Procedures Amendment 2 F/Z2, 1980 Commissioner of the Patent Office Shima 1) Haruki Tono ■, Indication of the case Patent Application No. 164292 of 1980 -2, Title of invention 3 amendments to the piston ring of the Stirling engine Relationship with patent applicant case Date of order for amendment of patent applicant 4 Voluntary amendment 5, number of inventions increased by amendment Target of 06 amendment

Claims (1)

【特許請求の範囲】[Claims] １ケ所に切れめのついた薄い中央リングをシリンダーの
内径よりわずかに小さい外形を持つ切れめのないエンド
レスリング２１［ｉ！ｉｌによってサンドイッチ状に密
着して上下よりはさみ、エキスパンダーもしくは自己の
張力によって該中央リングを全周にわたって張り出させ
てシリンダー内面に密着させるのと同時に、該中央リン
グの切れめ付近の両側において、該エキスパンダーに設
けた突起、もしくは中央リング自体に設けたピン等によ
って、上下の該エンドレスリングの背面を押して、その
付近だけ該エンドレスリングの外面がシリンダー内面に
同時に密着するようにした８枚のリングを本体とし、か
つゴムやプラスチックのような可撓性の板を該エンドレ
スリングのさらに上方と下方面と溝の内−の間に設けて
、ガスや油がリング本体の裏側を通らないようにしたス
ターリング機関のピストンリング０A thin central ring with a notch in one place is used as a continuous end ring with an outer diameter slightly smaller than the inner diameter of the cylinder [i! The center ring is held tightly in a sandwich-like manner by the il from above and below, and by the tension of the expander or itself, the center ring is stretched out over the entire circumference and brought into close contact with the inner surface of the cylinder. Using a protrusion on the expander or a pin on the center ring itself, press the back surfaces of the upper and lower endless rings so that the outer surfaces of the endless rings are in close contact with the inner surface of the cylinder at the same time only in those areas. A flexible plate made of rubber or plastic is provided between the upper and lower surfaces of the endless ring and the inside of the groove to prevent gas or oil from passing through the back side of the ring body. Stirling engine piston ring 0
JP16429281A 1981-10-16 1981-10-16 Piston ring for stirling engine Pending JPS5867948A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16429281A JPS5867948A (en) 1981-10-16 1981-10-16 Piston ring for stirling engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16429281A JPS5867948A (en) 1981-10-16 1981-10-16 Piston ring for stirling engine

Publications (1)

Publication Number Publication Date
JPS5867948A true JPS5867948A (en) 1983-04-22

Family

ID=15790332

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16429281A Pending JPS5867948A (en) 1981-10-16 1981-10-16 Piston ring for stirling engine

Country Status (1)

Country Link
JP (1) JPS5867948A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100444863B1 (en) * 2002-02-19 2004-08-21 현대자동차주식회사 Piston ring

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100444863B1 (en) * 2002-02-19 2004-08-21 현대자동차주식회사 Piston ring

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