JPH0356690Y2 - - Google Patents
Info
- Publication number
- JPH0356690Y2 JPH0356690Y2 JP1986191507U JP19150786U JPH0356690Y2 JP H0356690 Y2 JPH0356690 Y2 JP H0356690Y2 JP 1986191507 U JP1986191507 U JP 1986191507U JP 19150786 U JP19150786 U JP 19150786U JP H0356690 Y2 JPH0356690 Y2 JP H0356690Y2
- Authority
- JP
- Japan
- Prior art keywords
- tip
- cylinder
- reinforcing
- plunger
- leg
- 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
- 230000003014 reinforcing effect Effects 0.000 claims description 43
- 238000007789 sealing Methods 0.000 claims description 25
- 230000002093 peripheral effect Effects 0.000 claims description 14
- 230000002787 reinforcement Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
Landscapes
- Gasket Seals (AREA)
- Diaphragms And Bellows (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案は、密封装置に関し、特に、シール部
材の接合部を改良した密封装置に関するものであ
る。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a sealing device, and particularly to a sealing device in which the joint portion of a sealing member is improved.
第３図および第４図には、従来の密封装置が示
されていて、取付ける段部１１ａが形成されたシ
リンダ１１の内部には、突出部１２ａが設けられ
たプランジヤ１２が摺動可能に配設され、このプ
ランジヤ１２の突出部１２ａには、補強軸１３が
その脚部１３ａを介して連設されている。
3 and 4 show a conventional sealing device, in which a plunger 12 provided with a protrusion 12a is slidably disposed inside a cylinder 11 formed with a step 11a to be attached. A reinforcing shaft 13 is connected to the protrusion 12a of the plunger 12 via its leg 13a.
そして、断面がＵ字状をなす環状のシール部材
１４が、前記シリンダ１１の内部に位置してい
る。 An annular seal member 14 having a U-shaped cross section is located inside the cylinder 11.
さらに、前記シール部材１４の内周側に位置す
る内周側先端部１４ａが前記補強軸脚部１３ａと
当接するとともに、前記シール部材１４の外周側
に位置する外周側先端部１４ｃが、この外周側先
端部１４ｃを補強するための補強環１５によつ
て、段部１１ａに押圧されている。 Furthermore, the inner circumferential side tip 14a located on the inner circumferential side of the seal member 14 comes into contact with the reinforcing shaft leg part 13a, and the outer circumferential side tip 14c located on the outer circumferential side of the seal member 14 contacts this outer circumferential side. It is pressed against the step portion 11a by a reinforcing ring 15 for reinforcing the side tip portion 14c.
そして、前記シリンダ１の内部を前記プランジ
ヤ１２が摺動運動する際には、前記シール部材１
４は、その外周側先端部１４ｃがシリンダ１１に
固定された状態で、内周側先端部１４ａがプラン
ジヤ１２と一体に移動し、この移動時にシール部
材１４自体が変形する。 When the plunger 12 slides inside the cylinder 1, the seal member 1
4, with its outer circumferential tip 14c fixed to the cylinder 11, its inner circumferential tip 14a moves together with the plunger 12, and the seal member 14 itself deforms during this movement.
しかしながら、上記のような従来の密封装置に
あつては、シール部材１４の内周側先端部１４ａ
と補強軸脚部１３ａとの接合部１４ｂ、および外
周側先端部１４ｃと補強環１５との接合部１４ｄ
に応力が集中するため、接合部１４ｂおよび１４
ｄに亀裂６，７が生じたり、あるいは、前記シー
ル部材１４の内周側先端部１４ａが補強軸脚部１
３ａの先端面１３ｂの途中までしか接合していな
い形状のため、シール部材１４が補強軸脚部１３
ａの先端面１３ｂから補強軸脚部１３ａの外周面
１３ｃにかけて、補強軸１３から剥離したりする
恐れがある等の問題点を有していた。 However, in the conventional sealing device as described above, the inner peripheral end portion 14a of the sealing member 14
and the joint portion 14b between the reinforcing shaft leg portion 13a, and the joint portion 14d between the outer peripheral side tip portion 14c and the reinforcing ring 15.
Since stress concentrates on the joints 14b and 14
cracks 6 and 7 may occur in the reinforcing shaft leg portion 1, or the inner peripheral end portion 14a of the sealing member 14 may
3a, the sealing member 14 is connected only halfway to the end face 13b of the reinforcing shaft leg 13.
There was a problem in that there was a risk that the part from the tip end surface 13b of the reinforcing shaft leg part 13a to the outer circumferential surface 13c of the reinforcing shaft leg part 13a might peel off from the reinforcing shaft 13.
この考案は上記のような従来のもののもつ問題
点を解決したものであつて、シール部材１４の内
周側先端部１４ａと補強軸脚部１３ａとの接合部
１４ｂ、およびシール部材１４の外周側先端部１
４ｃと補強環１５との接合部１４ｄの耐久性を向
上させて、長寿命の密封装置を提供することを目
的とするものである。 This invention solves the problems of the conventional ones as described above, and includes a joint 14b between the inner tip 14a of the seal member 14 and the reinforcing shaft leg 13a, and a joint 14b on the outer circumference of the seal member 14. Tip part 1
The purpose of this invention is to improve the durability of the joint 14d between the reinforcing ring 4c and the reinforcing ring 15, and to provide a long-life sealing device.
上記の問題点を解決するためにこの考案は、筒
状をなし、内周面に段部が形成されたシリンダ
と、このシリンダの内部に設けられてシリンダに
対して相対運動するとともに、上面中央部に突出
部が突設されているプランジヤとの間を密封する
密封装置であつて、この密封装置は、下面に周縁
部に環状をなすとともに、先端部が丸くなつてい
る脚部を有する補強軸と、断面がＵ字状をなす環
状となつているとともに、内周側先端部および外
周側先端部が肉厚となつているシール部材と、補
強環とを具え、前記シール部材の内周側先端部の
内部に、前記補強軸の脚部を埋設し、また、前記
外周側先端部の内部に前記補強環を埋設し、前記
補強軸の脚部が埋設された内周側先端部を前記プ
ランジヤの突出部に被嵌するとともに、前記補強
環が埋設された外周側先端部を前記シリンダの段
部に押込み取付けしたことを特徴とする密封装置
を構成したものである。
In order to solve the above problems, this invention consists of a cylinder that is cylindrical and has a step formed on its inner circumferential surface, and a cylinder that is installed inside this cylinder and moves relative to the cylinder, and that A sealing device that seals between a plunger and a plunger having a protruding portion protruding from the bottom surface of the plunger. A shaft, a sealing member having a U-shaped cross section and a thick wall at an inner circumference side tip and an outer circumference side tip, and a reinforcing ring, the inner circumference of the sealing member being The leg portion of the reinforcing shaft is buried inside the side tip portion, the reinforcing ring is buried inside the outer tip portion, and the inner tip portion in which the leg portion of the reinforcing shaft is embedded is The sealing device is characterized in that an outer peripheral end portion that fits into the protruding portion of the plunger and in which the reinforcing ring is embedded is pushed into the stepped portion of the cylinder.
この考案は上記の手段を採用したことにより、
シール部材の内周側先端部と補強軸脚部との接合
部、およびシール部材の外周側先端部と補強環と
の接合部への応力の集中が防止されることとな
る。しかも、シリンダとプランジヤとの間への組
み付けは、プランジヤの突出部への被嵌と、シリ
ンダの段部への押込みだけで良いもので非常に簡
単である。
By adopting the above-mentioned means, this idea
Stress concentration on the joint between the inner peripheral end of the seal member and the reinforcing shaft leg and the joint between the outer peripheral end of the seal member and the reinforcing ring is prevented. Moreover, the assembly between the cylinder and the plunger is very simple, as it only requires fitting the plunger into the protruding part and pushing the cylinder into the stepped part.
以下、図面に示すこの考案の実施例について説
明する。
Embodiments of this invention shown in the drawings will be described below.
第１図および第２図にはこの考案による密封装
置が示されていて、密封装置の一部を取付けるた
めの段部１ａが形成されたシリンダ１の内部に
は、突出部２ａが設けられたプランジヤ２が摺動
可能に配設され、そして、前記プランジヤ２の突
出部２ａには、補強軸３が連設され、そして、こ
の補強軸３に設けた脚部３ａは、プランジヤ２か
ら所定の間隔をおいて垂下しているとともに、下
端部は丸先状となつている。 1 and 2 show a sealing device according to this invention, in which a protruding portion 2a is provided inside a cylinder 1 in which a stepped portion 1a for attaching a part of the sealing device is formed. A plunger 2 is slidably disposed, and a reinforcing shaft 3 is connected to a protrusion 2a of the plunger 2, and a leg 3a provided on the reinforcing shaft 3 extends from the plunger 2 at a predetermined distance. They hang down at intervals, and their lower ends are rounded.
そして、前記シリンダ１の内部にはシール部材
４が設けられている。 A seal member 4 is provided inside the cylinder 1.
このシール部材４は、断面がＵ字状の環状をな
し、その内周側先端部４ａおよび外周側先端部４
ｃがそれぞれ肉厚に形成され、前記内周側先端部
４ａは、前記補強軸３の脚部３ａを覆い、すなわ
ち、補強軸３の脚部３ａがシール部材４の内周側
先端部４ａに埋設された状態となつており、ま
た、その外周側先端部４ｃは、前記シリンダ１の
段部１ａに位置するとともに、段部１ａに取付け
るための補強環５を埋設した状態となつている。 This seal member 4 has an annular shape with a U-shaped cross section, and has an inner tip 4a and an outer tip 4.
c are each formed thickly, and the inner peripheral side tip part 4a covers the leg part 3a of the reinforcing shaft 3, that is, the leg part 3a of the reinforcing shaft 3 is formed on the inner peripheral side tip part 4a of the sealing member 4. Further, the outer circumference side tip portion 4c is located in the stepped portion 1a of the cylinder 1, and a reinforcing ring 5 for attaching to the stepped portion 1a is buried therein.
したがつて、前記内周側先端部４ａの内周面は
前記プランジヤ２の周面に当接した状態であると
ともに、外周側先端部４ｃは前記シリンダ１の段
部１ａに当接した状態となつている。そして、上
記のものを組み付けるに際しては、補強軸３の脚
部３ａが埋設されたシール部材４の内周側先端部
４ａをプランジヤ２の突出部２ａに被嵌し、ま
た、補強環５が埋設された外周側先端部４ｃをシ
リンダ１の段部１ａに押込むだけで組み付けが完
了するものである。 Therefore, the inner circumferential surface of the inner circumferential tip 4a is in contact with the circumferential surface of the plunger 2, and the outer circumferential tip 4c is in contact with the stepped portion 1a of the cylinder 1. It's summery. When assembling the above-mentioned components, the inner circumference side tip 4a of the seal member 4 in which the leg part 3a of the reinforcing shaft 3 is embedded is fitted into the protruding part 2a of the plunger 2, and the reinforcing ring 5 is embedded in the protruding part 2a of the plunger 2. The assembly is completed by simply pushing the outer peripheral end portion 4c which has been removed into the stepped portion 1a of the cylinder 1.
次に前記のものの作用について説明する。 Next, the operation of the above will be explained.
前記シリンダ１の内部を前記プランジヤ２が摺
動運動する際には、前記シール部材４は、その外
周側先端部４ｃがシリンダ１に固定された状態
で、内周側先端部４ａがプランジヤ２と一体に移
動し、この移動時にシール部材４自体が変形す
る。 When the plunger 2 slides inside the cylinder 1, the seal member 4 has its outer tip 4c fixed to the cylinder 1, and its inner tip 4a contacts the plunger 2. They move together, and the seal member 4 itself deforms during this movement.
この変形時に、従来のものの場合には内周側先
端部の補強軸脚部との接合部、および外周側先端
部の補強環との接合部に亀裂が生じて破損した
り、あるいは剥離が発生したりしたが、この考案
によるものの場合には、内周側先端部４ａおよび
外周側先端部４ｃとが肉厚となつているととも
に、この部分に補強軸３の脚部３ａおよび補強環
５が埋設され、しかも、移動側となつている補強
軸３の脚部３ａの先端は丸先状となつているので
応力の集中が防止でき、したがつて、亀裂や剥離
の発生を阻止することができるものである。 During this deformation, in the case of conventional products, cracks occur at the joints between the inner end of the shaft and the reinforcing ring, and the joints between the outer end and the reinforcing ring are cracked and damaged, or peeling occurs. However, in the case of the device according to this invention, the inner peripheral side tip 4a and the outer peripheral side tip 4c are thick, and the leg 3a of the reinforcing shaft 3 and the reinforcing ring 5 are attached to these parts. The tip of the leg 3a of the reinforcing shaft 3, which is buried and is on the movable side, has a rounded tip, which prevents concentration of stress and, therefore, prevents the occurrence of cracks and peeling. It is possible.
この考案は上記のように、構成したことによ
り、シリンダとプランジヤとの間への組み付け作
業が、プランジヤの突出部への被嵌と、シリンダ
の段部への押込みだけで良いので非常に簡単であ
る。また、組み付けたのちにはシール部材の内周
側先端部と補強軸の脚部との接合部への応力の集
中が防止され、これによつて接合部に亀裂や剥離
が発生するのを防止でき、さらに、シール部材の
外周側先端部と補強環との接合部への応力の集中
が防止され、接合部に亀裂や剥離が発生するのを
防止できるという効果を有している。
Due to the structure of this invention as described above, the assembly work between the cylinder and the plunger is very simple as it only requires fitting the plunger into the protruding part and pushing it into the stepped part of the cylinder. be. Additionally, after assembly, stress is prevented from concentrating on the joint between the inner tip of the seal member and the leg of the reinforcing shaft, thereby preventing cracks and peeling from occurring at the joint. Furthermore, it is possible to prevent stress from concentrating on the joint between the outer peripheral end of the sealing member and the reinforcing ring, thereby preventing cracks and peeling from occurring at the joint.
第１図はこの考案による密封装置の断面図、第
２図はこの考案による密封装置の要部の拡大断面
図、第３図は従来の密封装置の断面図、第４図は
従来の密封装置の要部の拡大断面図である。
１，１１……シリンダ、１ａ，１１ａ……段
部、２，１２……プランジヤ、２ａ，１２ａ……
突出部、３，１３……補強軸、３ａ，１３ａ……
補強軸脚部、４，１４……シール部材、４ａ，１
４ａ……内周側先端部、４ｃ，１４ｃ……外周側
先端部、５，１５……補強環、６，７……亀裂、
１３ｂ……補強軸脚部先端面、１３ｃ……補強軸
脚部外周面、１４ｂ，１４ｄ……接合部。
Fig. 1 is a sectional view of the sealing device according to this invention, Fig. 2 is an enlarged sectional view of the main parts of the sealing device according to this invention, Fig. 3 is a sectional view of a conventional sealing device, and Fig. 4 is a conventional sealing device. FIG. 1, 11... Cylinder, 1a, 11a... Step part, 2, 12... Plunger, 2a, 12a...
Projection, 3, 13... Reinforcement shaft, 3a, 13a...
Reinforcement shaft leg portion, 4, 14... Seal member, 4a, 1
4a... Inner circumference side tip, 4c, 14c... Outer circumference side tip, 5, 15... Reinforcement ring, 6, 7... Crack,
13b...Distal end surface of the reinforcing shaft leg, 13c...Outer peripheral surface of the reinforcing shaft leg, 14b, 14d...Joint portion.
Claims (1)
リンダ１と、このシリンダ１の内部に設けられる
とともに、シリンダ１に対して相対運動し、上面
中央部に突出部２ａが突設されているプランジヤ
２との間を密封する密封装置であつて、該密封装
置は、下面の周縁部に環状をなすとともに、先端
部が丸くなつている脚部３ａが垂下している補強
軸３と、断面がＵ字状をなして環状となつている
とともに、内周側先端部４ａおよび外周側先端部
４ｃが肉厚となつているシール部材４と、補強環
５とを具え、前記シール部材４の内周側先端部４
ａの内部に、前記補強軸３の脚部３ａを埋設し、
また、前記外周側先端部４ｃの内部に前記補強環
５を埋設し、前記補強軸３の脚部３ａが埋設され
た内周側先端部４ａを前記プランジヤ２の突出部
２ａに被嵌するとともに、前記補強環５が埋設さ
れた外周側先端部４ｃを前記シリンダ１の段部１
ａに押込み取付けしたことを特徴とする密封装
置。 A cylinder 1 has a cylindrical shape and has a stepped portion 1a formed on its inner circumferential surface, and is provided inside the cylinder 1, moves relative to the cylinder 1, and has a protruding portion 2a protruding from the center of the upper surface. This is a sealing device that seals between a plunger 2 and a reinforcing shaft 3, which has an annular peripheral edge on the lower surface and a leg portion 3a having a rounded tip that hangs down. , comprising a sealing member 4 having a U-shaped cross section and an annular shape, and having a thick inner circumferential tip 4a and an outer circumferential tip 4c, and a reinforcing ring 5, the sealing member 4 inner circumference side tip 4
burying the leg portion 3a of the reinforcing shaft 3 inside a;
Further, the reinforcing ring 5 is embedded inside the outer circumferential tip portion 4c, and the inner circumferential tip portion 4a in which the leg portion 3a of the reinforcing shaft 3 is embedded is fitted into the protruding portion 2a of the plunger 2. , the outer circumferential end portion 4c in which the reinforcing ring 5 is embedded is connected to the stepped portion 1 of the cylinder 1.
A sealing device characterized by being push-fitted into a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986191507U JPH0356690Y2 (en) | 1986-12-12 | 1986-12-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986191507U JPH0356690Y2 (en) | 1986-12-12 | 1986-12-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6396375U JPS6396375U (en) | 1988-06-22 |
| JPH0356690Y2 true JPH0356690Y2 (en) | 1991-12-20 |
Family
ID=31145715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986191507U Expired JPH0356690Y2 (en) | 1986-12-12 | 1986-12-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0356690Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4945247A (en) * | 1972-07-21 | 1974-04-30 |
-
1986
- 1986-12-12 JP JP1986191507U patent/JPH0356690Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4945247A (en) * | 1972-07-21 | 1974-04-30 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6396375U (en) | 1988-06-22 |
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