JPH072261U - Seal structure of plastic container connection - Google Patents
Seal structure of plastic container connectionInfo
- Publication number
- JPH072261U JPH072261U JP3817693U JP3817693U JPH072261U JP H072261 U JPH072261 U JP H072261U JP 3817693 U JP3817693 U JP 3817693U JP 3817693 U JP3817693 U JP 3817693U JP H072261 U JPH072261 U JP H072261U
- Authority
- JP
- Japan
- Prior art keywords
- container
- annular projection
- plastic container
- tubular portion
- sealed
- 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
Links
Landscapes
- Closures For Containers (AREA)
Abstract
(57)【要約】
【目的】プラスチック容器の接続部を、クリ−プ並びに
熱膨張・収縮歪によるシ−ル性低下をよく排除して安定
にシ−ルできるプラスチック容器接続部のシ−ル構造を
提供する。
【構成】容器を構成する２部材１，２の接続部におい
て、一方の部材１側に可撓性筒部３を設け、該筒部の先
端側外周面に環状突起３１を設け、他方の部材２側に上
記環状突起３１に接触される被シ−ル面２１を設け、容
器内圧により上記可撓性筒部３を内側から加圧して上記
環状突起３１を上記被シ−ル面２１に圧接させる。
(57) [Abstract] [Purpose] Sealing of a plastic container connection part that can eliminate the deterioration of the sealing property due to creep and thermal expansion / contraction strain, and stably seal the connection part of the plastic container. Provide structure. [Structure] In a connecting portion of two members 1 and 2 constituting a container, a flexible tubular portion 3 is provided on one member 1 side, an annular projection 31 is provided on a distal end side outer peripheral surface of the tubular portion, and the other member is provided. The sealed surface 21 to be brought into contact with the annular projection 31 is provided on the second side, and the flexible cylindrical portion 3 is pressed from the inside by the internal pressure of the container to press the annular projection 31 against the sealed surface 21. Let
Description
【０００１】[0001]
本考案はプラスチック容器の接続部のシ−ル構造に関するものである。 The present invention relates to a seal structure for a connecting portion of a plastic container.
【０００２】[0002]
プラスチック容器の容器本体と蓋体とを接続する場合、図４の（イ）または図 ４の（ロ）に示すように、両者１’，２’を螺合接続すると共に接続部をＯリン グ３１’〔図４の（イ）〕または断面Ｕ型リング３１"〔図４の（ロ）〕でシ− ルすることがある。 When connecting the container body and the lid of the plastic container, as shown in (a) of FIG. 4 or (b) of FIG. 4, both 1'and 2'are screwed together and the connecting portion is O-ringed. 31 '[FIG. 4 (a)] or U-shaped cross-section ring 31 "[FIG. 4 (b)].
【０００３】[0003]
しかしながら、Ｏリングによるシ−ル方式においては、Ｏリングの圧縮締付け 力を相当に高く設定しており（熱膨張収縮歪のもとでも、所定のシ−ル面圧を保 障できるように、圧縮締付け力を相当に高く設定する必要がある）、高温で使用 する場合、クリ−プによるシ−ル面圧の低下が生じて、密封対象流体の漏れが発 生し易い。 However, in the seal system using the O-ring, the compression tightening force of the O-ring is set to be considerably high (in order to maintain a predetermined seal surface pressure even under thermal expansion / shrinkage strain, (It is necessary to set the compression tightening force to a considerably high level), and when used at high temperatures, the seal surface pressure decreases due to creep, and the fluid to be sealed easily leaks.
【０００４】 特に、各種の薬液を濾過するフィルタ−ハウジングとして使用する容器の場合 、耐薬品性の点から、容器並びにＯリング共にフッ素樹脂が用いられるが、この フッ素樹脂においては、弾性が低く、クリ−プが発生し易いために、問題が大き い。Particularly, in the case of a container used as a filter-housing for filtering various chemicals, a fluororesin is used for both the container and the O-ring from the viewpoint of chemical resistance. However, in this fluororesin, elasticity is low, This is a serious problem because creep is likely to occur.
【０００５】 一方、上記断面Ｕ型リングによるシ−ル方式においては、容器内圧がリングの 断面Ｕ型内面に作用し、Ｕ型外面が被シ−ル面に加圧接触されて容器内圧に応じ たシ−ル性を呈する、所謂、セルフシ−ル方式であり、Ｏリングの場合とは異な り圧縮締め付け力を必要とせず、上記クリ−プの問題を排除できる。On the other hand, in the seal system using the U-shaped cross-section ring, the inner pressure of the container acts on the inner surface of the U-shaped cross-section of the ring, and the outer surface of the U-shape is brought into pressure contact with the surface to be sealed so as to respond to the inner pressure of the container. It is a so-called self-sealing system that exhibits excellent sealing property, does not require a compressive tightening force unlike the case of an O-ring, and can eliminate the problem of creep.
【０００６】 しかしながら、このシ−ル方式では、断面Ｕ型の縁端部、即ち、リップ部と被 シ−ル面とのなじみ具合でシ−ル性が決せられるので、熱膨張・収縮歪や接触液 等のためにそのなじみ具合が悪くなり、シ−ル性の低下が惹起されることがあり 、このリップ部が二箇所に存在するために、この原因によるシ−ル性低下の危険 性は大である。However, in this seal system, the sealability is determined by the familiarity between the edge portion of the U-shaped cross section, that is, the lip portion and the surface to be sealed. There is a risk of deterioration of the sealability due to the contact liquid and contact liquid, which may cause deterioration of the sealability. The sex is great.
【０００７】 本考案の目的は、プラスチック容器の接続部を、クリ−プ並びに熱膨張・収縮 歪によるシ−ル性低下をよく排除して安定にシ−ルできるプラスチック容器接続 部のシ−ル構造を提供することにある。An object of the present invention is to provide a seal for a plastic container connecting portion, which is capable of stably sealing the connection portion of the plastic container by well eliminating deterioration of sealability due to creep and thermal expansion / contraction strain. To provide the structure.
【０００８】[0008]
本考案のプラスチック容器接続部のシ−ル構造は、容器を構成する２部材の接 続部において、一方の部材側に可撓性筒部を設け、該筒部の先端側外周面に環状 突起を設け、他方の部材側に上記環状突起に接触される被シ−ル面を設け、容器 内圧により上記可撓性筒部を内側から加圧して上記環状突起を上記被シ−ル面に 圧接させることを特徴とする構成である。 According to the seal structure of the plastic container connecting portion of the present invention, a flexible cylindrical portion is provided on one member side at the connecting portion of two members constituting the container, and an annular projection is formed on the outer peripheral surface of the distal end side of the cylindrical portion. And a sealed surface to be brought into contact with the annular projection is provided on the other member side, and the flexible cylindrical portion is pressed from the inside by the container internal pressure to press the annular projection against the sealed surface. This is a configuration characterized by being made.
【０００９】[0009]
容器内圧の作用下、可撓性筒部が受圧する圧力で環状突起が被シ−ル面に圧接 されてシ−ルが行われる。従って、容器内圧に応じてシ−ル面圧が高められるセ ルフシ−ル方式であり、Ｏリング圧縮締め付け方式とは異なり、クリ−プを排除 できる。 また、熱膨張・収縮歪が生じても可撓性筒部の撓みにより吸収され、熱膨張・ 収縮歪によるシ−ル面圧の低下を排除できる。 Under the action of the internal pressure of the container, the annular projection is pressed against the surface to be sealed by the pressure received by the flexible tubular portion to perform the sealing. Therefore, it is a self-sealing method in which the seal surface pressure is increased according to the container internal pressure, and unlike the O-ring compression tightening method, the creep can be eliminated. Further, even if thermal expansion / contraction strain occurs, it is absorbed by the bending of the flexible tubular portion, and the reduction of the seal surface pressure due to the thermal expansion / contraction strain can be eliminated.
【００１０】[0010]
以下、図面により本考案の実施例を説明する。 図１は本考案の実施例を示す説明図である。 図１において、１はプラスチック製の容器本体、２はプラスチック製の蓋体で あり、これらを螺合により接続してある。 ３は容器本体１の開口側に容器本体１と一体に設けた可撓性のテ−パ円筒部で あり、該テ−パ円筒部３の先端側の外周面に環状突起３１を設けてある。２１は 蓋体２の被シ−ル面としての水平面であり、蓋体２の容器本体１への螺合により 、該水平面２１を上記テ−パ円筒部３の環状突起３１に接触させてある。 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view showing an embodiment of the present invention. In FIG. 1, 1 is a container body made of plastic, 2 is a lid made of plastic, and these are connected by screwing. Reference numeral 3 denotes a flexible taper cylindrical portion provided integrally with the container main body 1 on the opening side of the container main body 1, and an annular projection 31 is provided on the outer peripheral surface of the taper cylindrical portion 3 on the tip side. . Reference numeral 21 denotes a horizontal surface as a sealed surface of the lid body 2, and the horizontal surface 21 is brought into contact with the annular projection 31 of the taper cylindrical portion 3 by screwing the lid body 2 into the container body 1. .
【００１１】 この場合、テ−パ円筒部３が内側に撓み変形されるためにテ−パ円筒部３に反 力が発生するが、テ−パ円筒部３が可撓性とされているために、その反力は小で ある。従って、容器内圧が零の状態では、上記環状突起３１の被シ−ル面２１に 対する接触圧は僅小である。In this case, since the taper cylindrical portion 3 is flexed and deformed inward, a reaction force is generated in the taper cylindrical portion 3, but the taper cylindrical portion 3 is flexible. And the reaction force is small. Therefore, when the internal pressure of the container is zero, the contact pressure of the annular projection 31 against the sealed surface 21 is small.
【００１２】 而るに、容器に内圧が作用した場合、テ−パ円筒部３の付け根の内径をD2、環 状突起３１の環状径をD1とすれば、環状突起３１と被シ−ル面２１との接触箇所 に作用する力ｆは、 ｆ＝πp(D2 2−D1 2）／４ で与えられ、この力ｆがシ−ル力として作用する。Therefore, when the internal pressure acts on the container, if the inner diameter of the base of the taper cylindrical portion 3 is D 2 and the annular diameter of the annular protrusion 31 is D 1 , the annular protrusion 31 and the shielded portion are covered. The force f acting on the contact point with the ruled surface 21 is given by f = πp (D 2 2 −D 1 2 ) / 4, and this force f acts as a seal force.
【００１３】 従って、上記のシ−ル構造は、容器内圧pに応じてシ−ル力ｆが大となるセル フシ−ル方式であり、Ｏリング圧縮締め付け方式とは異なり、クリ−プによるシ −ル性の低下を回避できる。Therefore, the above-mentioned seal structure is a self-sealing method in which the sealing force f becomes large according to the container internal pressure p, and unlike the O-ring compression tightening method, a seal by creep is used. -It is possible to avoid deterioration of the property.
【００１４】 また、接続部に熱膨張・収縮歪が生じても、テ−パ円筒部３が可撓性であって 、その歪がテ−パ円筒部３の低応力撓みで吸収されるので、その熱膨張・収縮歪 に起因して環状突起３１と被シ−ル面２１との接触箇所に作用する圧力は、僅小 であり、熱膨張・収縮歪にもかかわらず、シ−ル力ｆを安定に維持できる。Further, even if thermal expansion / contraction strain occurs in the connection portion, the taper cylindrical portion 3 is flexible, and the strain is absorbed by the low stress bending of the taper cylindrical portion 3. The pressure acting on the contact point between the annular projection 31 and the surface to be sealed 21 due to the thermal expansion / contraction strain is very small, and despite the thermal expansion / contraction strain, the sealing force is small. f can be stably maintained.
【００１５】 上記実施例においては、蓋体２の被シ−ル面２１を水平面としているが、図２ に示すように、テ−パ面とすることもできる。 図３は、本考案の別実施例を示し、可撓性筒部３を一様外径とし、蓋体２の被 シ−ル面２１を垂直面としてある。 この実施例における、環状突起３１のシ−ル力ｆ’は、可撓性筒部３の内径を D、可撓性筒部３の付け根から環状突起３１までの距離をLとすれば、 ｆ’＝πpDL で与えられ、シ−ル力ｆ’の調整は、可撓性筒部３の付け根から環状突起３１ま での距離Lの調整により行うことができる。Although the sealed surface 21 of the lid 2 is a horizontal surface in the above embodiment, it may be a tapered surface as shown in FIG. FIG. 3 shows another embodiment of the present invention, in which the flexible tubular portion 3 has a uniform outer diameter and the sealed surface 21 of the lid 2 is a vertical surface. In this embodiment, the sealing force f ′ of the annular protrusion 31 is f, where D is the inner diameter of the flexible tubular portion 3 and L is the distance from the base of the flexible tubular portion 3 to the annular protrusion 31. The seal force f'is given by '= πpDL, and can be adjusted by adjusting the distance L from the base of the flexible tubular portion 3 to the annular projection 31.
【００１６】 なお、本考案において、通常、可撓性筒部は容器本体と一体とし、容器本体を 射出成形等により成形する際に同時に成形するが、可撓性筒部を別に成形し、こ れを容器本体に接着剤、溶着等により固着することも可能である。In the present invention, the flexible tubular portion is usually integrated with the container body and is formed simultaneously when the container body is formed by injection molding or the like. It is also possible to fix it to the container body with an adhesive, welding or the like.
【００１７】[0017]
本考案のプラスチック容器の接続部のシ−ル構造は、上述した通りの構成であ り、セルフシ−ル方式であるから、Ｏリング圧縮締め付け方式とは異なり、クリ −プによるシ−ル性低下を排除できる。 また、プラスチック容器の接続部に熱膨張・収縮歪が発生しても、これを可撓 性筒部の低応力撓み変形で吸収できるから、熱膨張・収縮歪によるシ−ル性低下 を排除できる。 従って、本考案によれば、高温下で使用しても、シ−ルを高い信頼性で保障で きるプラスチック容器を提供できる。 Since the seal structure of the connecting portion of the plastic container of the present invention is the structure as described above and the self-sealing method, unlike the O-ring compression and tightening method, the sealing property is deteriorated by the creep. Can be eliminated. Further, even if thermal expansion / contraction strain occurs in the connecting portion of the plastic container, this can be absorbed by the low stress bending deformation of the flexible tubular portion, so that deterioration of the sealing property due to thermal expansion / contraction strain can be eliminated. . Therefore, according to the present invention, it is possible to provide a plastic container capable of ensuring a reliable seal even when used at high temperatures.
【図１】本考案の実施例を示す説明図である。FIG. 1 is an explanatory view showing an embodiment of the present invention.
【図２】本考案の別実施例を示す説明図である。FIG. 2 is an explanatory view showing another embodiment of the present invention.
【図３】本考案の他の別実施例を示す説明図である。FIG. 3 is an explanatory view showing another embodiment of the present invention.
【図４】異なる従来例を示す説明図である。FIG. 4 is an explanatory diagram showing a different conventional example.
１ 容器部材 ２ 容器部材 ２１ 被シ−ル面 ３ 可撓性筒部 ３１ 環状突起 DESCRIPTION OF SYMBOLS 1 Container member 2 Container member 21 Sealed surface 3 Flexible cylinder part 31 Annular protrusion
───────────────────────────────────────────────────── フロントページの続き (72)考案者 姫野 誠 大阪府茨木市下穂積１丁目１番２号 日東 電工株式会社内 (72)考案者 上田 伸作 埼玉県川越市下赤坂569番地３ (72)考案者 山岸 隆 栃木県河内郡南河内町薬師寺3304番地１ ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Makoto Himeno Makoto Himeno 1-2 1-2 Shimohozumi, Ibaraki, Osaka Prefecture Nitto Denko Corporation (72) Shinsaku Ueda 569 3 Shimoakasaka, Kawagoe City, Saitama Prefecture (72) Inventor Takashi Yamagishi 3304-1 Yakushiji, Minamikawachi-cho, Kawachi-gun, Tochigi Prefecture
Claims (1)
一方の部材側に可撓性筒部を設け、該筒部の先端側外周
面に環状突起を設け、他方の部材側に上記環状突起に接
触される被シ−ル面を設け、容器内圧により上記可撓性
筒部を内側から加圧して上記環状突起を上記被シ−ル面
に圧接させることを特徴とするプラスチック容器接続部
のシ−ル構造。1. A connecting portion of two members constituting a container,
A flexible tubular portion is provided on one member side, an annular projection is provided on the outer peripheral surface of the distal end side of the tubular portion, and a sealed surface to be brought into contact with the annular projection is provided on the other member side. A seal structure for a plastic container connecting portion, wherein the flexible tubular portion is pressed from the inside to bring the annular projection into pressure contact with the surface to be sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3817693U JPH072261U (en) | 1993-06-18 | 1993-06-18 | Seal structure of plastic container connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3817693U JPH072261U (en) | 1993-06-18 | 1993-06-18 | Seal structure of plastic container connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH072261U true JPH072261U (en) | 1995-01-13 |
Family
ID=12518087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3817693U Pending JPH072261U (en) | 1993-06-18 | 1993-06-18 | Seal structure of plastic container connection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH072261U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008105715A (en) * | 2006-10-26 | 2008-05-08 | Yoshino Kogyosho Co Ltd | Container |
-
1993
- 1993-06-18 JP JP3817693U patent/JPH072261U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008105715A (en) * | 2006-10-26 | 2008-05-08 | Yoshino Kogyosho Co Ltd | Container |
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