JPS61211574A - Packing for piston - Google Patents
Packing for pistonInfo
- Publication number
- JPS61211574A JPS61211574A JP60050314A JP5031485A JPS61211574A JP S61211574 A JPS61211574 A JP S61211574A JP 60050314 A JP60050314 A JP 60050314A JP 5031485 A JP5031485 A JP 5031485A JP S61211574 A JPS61211574 A JP S61211574A
- Authority
- JP
- Japan
- Prior art keywords
- ring
- annular groove
- sealing material
- outer periphery
- resin
- 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.)
- Granted
Links
- 238000012856 packing Methods 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000003566 sealing material Substances 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 13
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 230000002093 peripheral effect Effects 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 abstract description 5
- 239000004809 Teflon Substances 0.000 abstract description 3
- 229920006362 Teflon® Polymers 0.000 abstract description 3
- 239000004677 Nylon Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
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
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compressor (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Sealing Devices (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ピストン用パツキンに関する。更に詳しくは
、外周部が樹脂製シール摺動材よりなるリング状摺動部
を有するピストン用パツキンに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a packing for a piston. More specifically, the present invention relates to a piston packing having a ring-shaped sliding portion whose outer periphery is made of a resin-made seal sliding material.
従来、ピストン用パツキンとしては１図面の第３図に示
すように、外周部が樹脂製シール摺動材１よりなり、そ
の内側にバックリング２を嵌装せしめたスリッパ−シー
ルが多く用いられている。Conventionally, as shown in FIG. 3 of the drawings, a slipper seal is often used as a piston seal, the outer periphery of which is made of a resin seal sliding material 1 and a buck ring 2 fitted inside the seal. There is.
このようなパツキンにおいては、リング状摺動部を形成
するシール摺動材としてテフロン、ナイロンなどの樹脂
材料が用いられているため、完全なシール性を維持する
ことは困難であった６〔発明が解決しようとする問題点
〕
本発明者は、かかる構造を有するピストン用パツキンの
シール性を向上さすべく種々検討の結果、その外周部の
外周面側にリング状シール材を嵌挿させることにより、
かかる課題が効果的に解決されることを見出した。In such packings, resin materials such as Teflon and nylon are used as the seal sliding material that forms the ring-shaped sliding part, so it is difficult to maintain perfect sealing properties6 [Invention [Problems to be Solved] As a result of various studies in order to improve the sealing performance of the piston packing having such a structure, the present inventor found that by inserting a ring-shaped sealing material into the outer peripheral surface of the piston packing, ,
It has been found that this problem can be effectively solved.
ｃ問題点を解決するための手段〕
従って、本発明はピストン用パツキンに係り、このピス
トン用パツキンは、外周部が樹脂製シール摺動材よりな
るリング状摺動部を有するパッキンにおいて、前記外周
部の外周面側に環状溝を穿設し、該環状溝にリング状シ
ール材を嵌挿させてなる。Means for Solving Problem c] Therefore, the present invention relates to a packing for a piston, and this packing for a piston has a ring-shaped sliding part whose outer periphery is made of a resin seal sliding material. An annular groove is formed on the outer peripheral surface of the part, and a ring-shaped sealing material is inserted into the annular groove.
図面の第１図は、本発明に係るピストン用パツキンの基
本的な一態様を示すそれの断面図であり、バックリング
２をその内側に嵌装せしめた樹脂製シール摺動材よりな
る外周部１の外周面３側に環状溝４を穿設し、そこにリ
ング状シール材５を嵌挿させている。また、第２図に示
された態様では、樹脂製シール摺動材よりなる外周部１
の両端面６．６′側がバックアップリング７によって挟
着されており、この場合にも環状溝へのリング状シール
材５の嵌挿が同様に行われる。FIG. 1 of the drawings is a sectional view showing one basic aspect of the piston packing according to the present invention, in which the outer circumferential portion is made of a resin seal sliding material with a buck ring 2 fitted inside. An annular groove 4 is bored on the outer circumferential surface 3 side of 1, and a ring-shaped sealing material 5 is inserted therein. In addition, in the embodiment shown in FIG. 2, the outer peripheral portion 1 made of a resin seal sliding material
Both end surfaces 6 and 6' of the ring are sandwiched by a backup ring 7, and in this case as well, the ring-shaped sealing material 5 is inserted into the annular groove in the same manner.
外周部を形成するシール摺動材としては、摩擦係数が低
くかつ圧力を受けたときの変形を少なくするため、機械
的強度の大きいテフロン、ナイロン、ポリウレタンなど
の樹脂材料が用いられる。As the seal sliding material forming the outer periphery, a resin material such as Teflon, nylon, or polyurethane, which has a low coefficient of friction and has high mechanical strength, is used to reduce deformation when subjected to pressure.
この摺動材の内側に嵌装されるバックリングは、ＮＢＲ
などのゴム弾性体によって形成されており。The back ring fitted inside this sliding material is NBR
It is made of rubber elastic material such as.
摺動材に用いられる材料の共通的な欠点である圧縮永久
歪または塑性変形による摺動材の締め代不足を補う目的
で用いられている。It is used to compensate for the lack of tightness of sliding materials due to compression set or plastic deformation, which is a common drawback of materials used for sliding materials.
また、リング状シール材としては、一般的なＯリングや
Ｏリングが用いられ、それが嵌挿される環状溝の形状は
通常リング状シール材の断面形状に対応するように穿設
される。Further, as the ring-shaped sealing material, a general O-ring or an O-ring is used, and the shape of the annular groove into which the O-ring is inserted is usually bored so as to correspond to the cross-sectional shape of the ring-shaped sealing material.
〔作用〕および〔効果〕
本発明に係るピストン用パツキンは、次のような作用効
果を示している。[Functions] and [Effects] The piston packing according to the present invention exhibits the following effects.
（１）シール摺動材の外周部にリング状シール嵌挿溝を
設けているため、圧力によってシール摺動材が外周ピス
トンに圧接されるので、はみ出し隙間が極小となり、そ
の結果シール材のはみ出しによる破損の心配がなくなり
、長期間安定した良好なシール性を維持することができ
る。(1) Since a ring-shaped seal fitting groove is provided on the outer periphery of the seal sliding material, the seal sliding material is brought into contact with the outer peripheral piston due to pressure, so the protrusion gap is minimized, and as a result, the seal material protrudes. There is no need to worry about breakage caused by damage, and stable and good sealing performance can be maintained for a long period of time.
（２）補充的なシール材として０リングやＯリングなど
を用いているため、樹脂製のシール摺動材では求められ
なかった完全なシールができる。(2) Since O-rings, O-rings, etc. are used as supplementary sealing materials, a complete seal that could not be achieved with resin seal sliding materials can be achieved.
（３）一部油機部品では、従来のこの種のタイプのパツ
キンでは適合しない分野があったが、本発明によるパツ
キンはそれに対しても有効に適用される。(3) Although there are some hydraulic machine parts in which conventional packings of this type are not suitable, the packing according to the present invention can be effectively applied thereto.
第１〜２図は、いずれも本発明に係るピストン用パツキ
ンの断面図である。また、第３図は、従来のピストン用
パツキンの断面図である。
（符号の説明）
１・・・・・・・樹脂製シール摺動材
２・・・・・・・バックリング
３・・・・・・・外周部外周面
４・・・・・・・環状溝
５・・・・・・・リング状シール材
６・・・・・・・外周部端面1 and 2 are sectional views of a piston packing according to the present invention. Moreover, FIG. 3 is a sectional view of a conventional piston packing. (Explanation of symbols) 1...Resin seal sliding material 2...Buck ring 3...Outer peripheral surface 4...Annular Groove 5...Ring-shaped sealing material 6...Outer peripheral end surface
Claims (1)
部を有するパッキンにおいて、前記外周部の外周面側に
環状溝を穿設し、該環状溝にリング状シール材を嵌挿さ
せてなるピストン用パッキン。 ２、リング状シール材がＯリングまたはＤリングである
特許請求の範囲第１項記載のピストン用パッキン。 ３、両端面側がバックアップリングによって挟着されて
いる樹脂製シール摺動材が用いられた特許請求の範囲第
１項記載のピストン用パッキン。[Scope of Claims] 1. In a packing having a ring-shaped sliding part whose outer peripheral part is made of a resin seal sliding material, an annular groove is bored on the outer peripheral surface side of the outer peripheral part, and a ring-shaped groove is formed in the annular groove. A piston packing made by inserting a sealing material. 2. The piston packing according to claim 1, wherein the ring-shaped sealing material is an O-ring or a D-ring. 3. The piston packing according to claim 1, which uses a resin seal sliding material whose both end surfaces are sandwiched between backup rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60050314A JPS61211574A (en) | 1985-03-15 | 1985-03-15 | Packing for piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60050314A JPS61211574A (en) | 1985-03-15 | 1985-03-15 | Packing for piston |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61211574A true JPS61211574A (en) | 1986-09-19 |
| JPH0543911B2 JPH0543911B2 (en) | 1993-07-02 |
Family
ID=12855432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60050314A Granted JPS61211574A (en) | 1985-03-15 | 1985-03-15 | Packing for piston |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61211574A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH072681U (en) * | 1993-06-11 | 1995-01-13 | 甲南電機株式会社 | Fluid pressure type pressure relief device for relief valve |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5824559U (en) * | 1981-08-11 | 1983-02-16 | 下村 泰造 | Piston for operating cylinder |
-
1985
- 1985-03-15 JP JP60050314A patent/JPS61211574A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5824559U (en) * | 1981-08-11 | 1983-02-16 | 下村 泰造 | Piston for operating cylinder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH072681U (en) * | 1993-06-11 | 1995-01-13 | 甲南電機株式会社 | Fluid pressure type pressure relief device for relief valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0543911B2 (en) | 1993-07-02 |
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