JPH0543911B2 - - Google Patents
Info
- Publication number
- JPH0543911B2 JPH0543911B2 JP60050314A JP5031485A JPH0543911B2 JP H0543911 B2 JPH0543911 B2 JP H0543911B2 JP 60050314 A JP60050314 A JP 60050314A JP 5031485 A JP5031485 A JP 5031485A JP H0543911 B2 JPH0543911 B2 JP H0543911B2
- Authority
- JP
- Japan
- Prior art keywords
- ring
- shaped
- resin
- annular groove
- shaped seal
- 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 - Lifetime
Links
- 238000012856 packing Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 13
- 239000011347 resin Substances 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 13
- 239000003566 sealing material Substances 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 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)
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、内側にバツクリングを嵌装させた樹脂
製リング状シール摺動材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 resin ring-shaped seal sliding member into which a back ring is fitted.
従来、ピストン用パツキンとしては、図面の第
３図に示すように、樹脂製リング状シール摺動材
の内側にバツクリング２を嵌装せしめたスリツパ
ーシールが多く用いられている。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つた。
Conventionally, as shown in FIG. 3 of the drawings, a slipper seal in which a back ring 2 is fitted inside a resin ring-shaped seal sliding member is often used as a piston packing. In such packings, a resin material such as Teflon or nylon is used as the seal sliding material forming the ring-shaped sliding portion, so it has been difficult to maintain perfect sealing performance.
〔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、樹脂製リング状シール摺動材の外周面に環状
溝を穿設し、この環状溝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。[Problems to be Solved by the Invention] As a result of various studies in order to improve the sealing properties of the piston packing having such a structure, the inventor of the present invention created an annular groove on the outer circumferential surface of the resin ring-shaped seal sliding material. It has been found that this problem can be effectively solved by inserting a ring-shaped sealing material into the annular groove.
従つて、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、内側にバツクリング
を嵌装させた樹脂製リング状シール摺動材を有す
るパツキンにおいて、前記摺動材の外周面に環状
溝を穿設し、該環状溝にＯリングまたはＤリング
であるリング状シール材を嵌挿させてなる。
Therefore, the present invention relates to a piston packing,
This piston packing has a resin ring-shaped seal sliding member fitted with a back ring inside, and an annular groove is bored on the outer peripheral surface of the sliding member, and an O-ring or D It is made by inserting a ring-shaped sealing material.
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、バツクリング２をその内側に嵌装せしめた樹
脂製リング状シール摺動材１の外周面３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
脂製リング状シール摺動材１の両端面６，６′が
バツクアツプリング７によつて挟着されており、
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 embodiment of the piston packing according to the present invention, showing the outer periphery of a resin ring-shaped seal sliding member 1 with a back ring 2 fitted inside thereof. An annular groove 4 is bored in the surface 3, and a ring-shaped sealing material 5 is inserted therein. Further, in the embodiment shown in FIG. 2, both end surfaces 6, 6' of the resin ring-shaped seal sliding member 1 are sandwiched by a back-up spring 7,
In this case as well, the ring-shaped sealing material 5 is inserted into the annular groove in the same manner.
リング状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 ring-shaped seal sliding material, 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ツクリング
は、NBRなどのゴム弾性体によつて形成されて
おり、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。 The back ring fitted inside this sliding material is made of a rubber elastic material such as NBR, and the back ring is made of a rubber elastic material such as NBR. It is used to compensate for the lack of tightness in moving materials.
また、リング状シール材としては、一般的なＯ
リングやＤ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。 In addition, as a ring-shaped sealing material, general O
A ring or a D-ring is used, and the shape of the annular groove into which the 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) 樹脂製リング状シール摺動材の外周面にリン
グ状シール嵌挿溝を設けているため、圧力によ
つ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 peripheral surface of the resin ring-shaped seal sliding material, the seal sliding material is pressed against the outer peripheral piston by pressure, so the protrusion gap is minimized. As a result, there is no need to worry about damage due to extrusion of the sealing material, 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ＯリングやＤリング
などを用いているため、樹脂製のリング状のシ
ール摺動材では求められなかつた完全なシール
ができる。(2) Since O-rings, D-rings, etc. are used as supplementary sealing materials, a complete seal that could not be achieved with resin ring-shaped 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つたが、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 for which conventional packings of this type are not suitable, the packing according to the present invention can be effectively applied to those areas as well.
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……樹脂製リング状シール
摺動材、２……バツクリング、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、７……バツクアツプリング。
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 ring-shaped seal sliding material, 2... Back ring, 3... Outer peripheral surface, 4... Annular groove, 5... Ring-shaped seal material, 6
...Outer peripheral end surface, 7...Backup spring.
Claims (1)
グ状シール摺動材を有するパツキンにおいて、前
記摺動材の外周面に環状溝を穿設し、該環状溝に
ＯリングまたはＤリングであるリング状シール材
を嵌挿させてなるピストン用パツキン。 ２ 両端面がバツクアツプリングによつて挾着さ
れている樹脂製リング状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ツキ
ン。[Scope of Claims] 1. In a packing having a resin ring-shaped seal sliding member with a back ring fitted inside, an annular groove is bored on the outer circumferential surface of the sliding member, and an O-ring or an O-ring is inserted into the annular groove. A piston seal made by inserting a ring-shaped sealing material, which is a D-ring. 2. The piston packing according to claim 1, which uses a resin ring-shaped seal sliding material whose both end faces are clamped by back-up springs.
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 JPS61211574A (en) | 1986-09-19 |
| JPH0543911B2 true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2585235Y2 (en) * | 1993-06-11 | 1998-11-18 | 甲南電機株式会社 | Fluid pressure setting device for relief valve |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5824559B2 (en) * | 1972-09-15 | 1983-05-21 | インプル−ブド マシ−ナリ− インコ−ポレ−テツド | Lattice structure and its corrugated strips |
Family Cites Families (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 |
|---|---|---|---|---|
| JPS5824559B2 (en) * | 1972-09-15 | 1983-05-21 | インプル−ブド マシ−ナリ− インコ−ポレ−テツド | Lattice structure and its corrugated strips |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61211574A (en) | 1986-09-19 |
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