JP6827867B2 - Gasket and how to manufacture the gasket - Google Patents

Gasket and how to manufacture the gasket Download PDF

Info

Publication number
JP6827867B2
JP6827867B2 JP2017067920A JP2017067920A JP6827867B2 JP 6827867 B2 JP6827867 B2 JP 6827867B2 JP 2017067920 A JP2017067920 A JP 2017067920A JP 2017067920 A JP2017067920 A JP 2017067920A JP 6827867 B2 JP6827867 B2 JP 6827867B2
Authority
JP
Japan
Prior art keywords
outer peripheral
base material
gasket
annular base
peripheral surface
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.)
Active
Application number
JP2017067920A
Other languages
Japanese (ja)
Other versions
JP2018168995A (en
Inventor
利和 白瀬
利和 白瀬
和生 谷口
和生 谷口
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.)
Fujikura Composites Inc
Original Assignee
Fujikura Composites Inc
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 Fujikura Composites Inc filed Critical Fujikura Composites Inc
Priority to JP2017067920A priority Critical patent/JP6827867B2/en
Publication of JP2018168995A publication Critical patent/JP2018168995A/en
Application granted granted Critical
Publication of JP6827867B2 publication Critical patent/JP6827867B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Gasket Seals (AREA)

Description

本発明は、管継手等の接続部分をシールするためのガスケットに関するものである。 The present invention relates to a gasket for sealing a connection portion such as a pipe joint.

例えば給湯器と配管とを接続する管継手等の接続部には、リング状の鋼板円板をゴムで被覆したガスケットが用いられる。この種のガスケットとしては、ゴム材料を鋼板円板と一体成型する際に、鋼板円板の外周端面近傍を両面側から金型に挟み込んで固定することにより、ゴム材の注入位置を安定させてゴム膜厚寸法の精度向上を図る技術が知られている（例えば、特許文献１参照。）。 For example, a gasket in which a ring-shaped steel plate is coated with rubber is used for a connection portion such as a pipe joint that connects a water heater and a pipe. In this type of gasket, when the rubber material is integrally molded with the steel plate disk, the rubber material injection position is stabilized by sandwiching the vicinity of the outer peripheral end face of the steel plate disk from both sides into the mold and fixing it. A technique for improving the accuracy of the rubber film thickness dimension is known (see, for example, Patent Document 1).

特開２００５−１５５９６５号公報Japanese Unexamined Patent Publication No. 2005-155965

しかしながら、上記のように鋼板円板の外周端面近傍を両面側から金型に挟み込んで成型したガスケットは、鋼板円板の外周面がゴム材料に覆われずにむきだしとなる。その場合、外周側の継手部材に近接したり接触したりして隙間腐食や電食等を生じやすくなるという問題点を有していた。 However, in the gasket formed by sandwiching the vicinity of the outer peripheral end surface of the steel plate disk from both sides into the mold as described above, the outer peripheral surface of the steel plate disk is not covered with the rubber material and is exposed. In that case, there is a problem that gap corrosion, electrolytic corrosion, etc. are likely to occur due to approaching or contacting the joint member on the outer peripheral side.

本発明は、上記の点に鑑み、ガスケットの外周側の継手部材等との間隙を容易に確保できるようにすることを目的としている。 In view of the above points, it is an object of the present invention to make it possible to easily secure a gap between the gasket and the joint member on the outer peripheral side.

上記の目的を達成するために、
本発明は、
リング状の環状基材と、
上記環状基材の外面を覆う所定の厚さのゴム体とを有するガスケットであって、
上記ゴム体は、上記環状基材の一方側の面における外周側領域と、上記環状基材の外周面における上記外周側領域に隣接する一部の領域である外周面一部領域とを除く領域に形成されていることを特徴とする。 To achieve the above objectives
The present invention
With a ring-shaped annular base material,
A gasket having a rubber body having a predetermined thickness covering the outer surface of the annular base material.
The rubber body is a region excluding an outer peripheral side region on one side surface of the annular base material and a partial outer peripheral surface region which is a part region adjacent to the outer peripheral side region on the outer peripheral surface of the annular base material. It is characterized in that it is formed in.

これにより、環状基材の外周面の少なくとも一部がゴム体によって覆われているので、ガスケットの外周側の継手部材等との間に所定の間隙を容易に確保でき、隙間腐食や電食等を抑制または低減することが比較的容易にできる。 As a result, at least a part of the outer peripheral surface of the annular base material is covered with a rubber body, so that a predetermined gap can be easily secured between the gasket and the joint member on the outer peripheral side, and gap corrosion, electrolytic corrosion, etc. Can be relatively easily suppressed or reduced.

本発明によれば、ガスケットの外周側の継手部材等との間隙を容易に確保可能になる。 According to the present invention, it is possible to easily secure a gap between the gasket and the joint member on the outer peripheral side.

ガスケットの使用状態を示す断面図である。It is sectional drawing which shows the use state of a gasket. ガスケットの詳細な構成を示す部分拡大断面図である。It is a partially enlarged sectional view which shows the detailed structure of a gasket. 金型の構成を示す部分拡大断面図である。It is a partially enlarged sectional view which shows the structure of a mold.

以下、本発明の実施形態を図面に基づいて詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

まず、ガスケット１００の使用状態の例を図１に基づいて説明する。ガスケット１００は、例えば、給湯器に取り付けられたジョイント２００の端面２０１と、配管３００のフランジ部３０１との間に配置される。上記ジョイント２００の雄ねじ部２０２に袋ナット４００の雌ねじ部４０１を螺合させることにより、ガスケット１００のゴム体１０２が、ジョイント２００の端面２０１、および配管３００のフランジ部３０１に密着し、ジョイント２００と配管３００との接合部がシールされる。ここで、同図の左半分は袋ナット４００を締め付ける前の状態を示し、右半分は袋ナット４００を締め付けた状態を示している。 First, an example of the usage state of the gasket 100 will be described with reference to FIG. The gasket 100 is arranged, for example, between the end face 201 of the joint 200 attached to the water heater and the flange portion 301 of the pipe 300. By screwing the female threaded portion 401 of the cap nut 400 into the male threaded portion 202 of the joint 200, the rubber body 102 of the gasket 100 comes into close contact with the end face 201 of the joint 200 and the flange portion 301 of the pipe 300, and joins the joint 200. The joint with the pipe 300 is sealed. Here, the left half of the figure shows the state before the bag nut 400 is tightened, and the right half shows the state where the bag nut 400 is tightened.

上記ガスケット１００は、図２に示すように、環状基材１０１の表面の一部を除く領域にゴム体１０２が形成されて成っている。より詳しくは、ゴム体１０２は、環状基材１０１の一方側の面（図２では下面）における外周側領域１０１ａと、環状基材１０１の外周面における、上記外周側領域１０１ａに隣接する一部の領域である外周面一部領域１０１ｂとを除く領域に形成されている。なお、上記外周側領域１０１ａ、および外周面一部領域１０１ｂは、環状基材１０１が完全に露出しているのに限らず、製造時における環状基材１０１の浮き上がりや寸法精度に応じたゴム材料の回り込み等によって、薄膜状などのゴム体が形成されていてもよい。 As shown in FIG. 2, the gasket 100 is formed of a rubber body 102 formed in a region excluding a part of the surface of the annular base material 101. More specifically, the rubber body 102 is a part of the outer peripheral side region 101a on one side surface (lower surface in FIG. 2) of the annular base material 101 and a part adjacent to the outer peripheral side region 101a on the outer peripheral surface of the annular base material 101. It is formed in a region excluding a part of the outer peripheral surface region 101b, which is a region of the above. The outer peripheral side region 101a and the outer peripheral surface partial region 101b are not limited to the case where the annular base material 101 is completely exposed, but are rubber materials according to the floating and dimensional accuracy of the annular base material 101 during manufacturing. A rubber body such as a thin film may be formed by wrapping around.

上記外周側領域１０１ａにおける半径方向の幅ａは、好ましくは例えば環状基材の厚さに対して、１３％以上、より好ましくは２０％以上に設定されている。１３％未満の場合、環状基材が金属の場合、環状基材を打ち抜いたときに、一方の外周面の角が金属の塑性変形によって滑らかなＲ形状となり、このＲ形状部にゴム体が被覆されると、シール面が水平でなくなるため、シール性能が低下する場合がある。また、環状基材の材質に依らず後述するゴム材を環状基材に成型する場合に、１３％以下であると環状基材を金型に保持することが難しく、厚さの安定したゴム体を成型することが困難になる場合がある。 The width a in the radial direction in the outer peripheral side region 101a is preferably set to 13% or more, more preferably 20% or more with respect to the thickness of the annular base material, for example. When it is less than 13%, when the annular base material is metal, when the annular base material is punched out, the corner of one outer peripheral surface becomes a smooth R shape due to the plastic deformation of the metal, and the rubber body covers this R shape portion. If this is done, the sealing surface will not be horizontal, and the sealing performance may deteriorate. Further, when the rubber material described later is molded into the annular base material regardless of the material of the annular base material, if it is 13% or less, it is difficult to hold the annular base material in the mold, and the rubber body having a stable thickness. May be difficult to mold.

また、外周面一部領域１０１ｂにおけるガスケット１００の厚さ方向の長さｂは、好ましくは例えば環状基材１０１の厚さに対して５０％以下に設定されている。５０％より大きい場合、環状基材１０１の外周面に対するゴム体の被覆量が不足し、十分な隙間腐食や電食を抑制することが困難になる場合がある。 Further, the length b of the gasket 100 in the partial region 101b of the outer peripheral surface in the thickness direction is preferably set to 50% or less with respect to the thickness of the annular base material 101, for example. If it is larger than 50%, the amount of the rubber body covering the outer peripheral surface of the annular base material 101 may be insufficient, and it may be difficult to sufficiently suppress crevice corrosion and electrolytic corrosion.

また、環状基材１０１を被覆するゴム体１０２の厚さは０．１ｍｍ以上が好ましく、特に好ましくは０．２ｍｍ以上である。０．１ｍｍ未満の場合、十分なゴム体の厚さが得られず、シールした際にシール面の片当たりなどが生じ、シール性能が低下する場合がある。また、環状基材１０１の外周を被覆するゴム体１０２の厚さは隙間腐食や電食を抑制する観点から０．２ｍｍ以上が好ましい。なお、ゴム体１０２の厚さの上限については、シール性に関しては特に制限ないが、実際上は袋ナット４００の寸法等によって規定される。 The thickness of the rubber body 102 that covers the annular base material 101 is preferably 0.1 mm or more, and particularly preferably 0.2 mm or more. If it is less than 0.1 mm, a sufficient thickness of the rubber body cannot be obtained, and when sealing, one-sided contact of the sealing surface may occur and the sealing performance may deteriorate. Further, the thickness of the rubber body 102 that covers the outer periphery of the annular base material 101 is preferably 0.2 mm or more from the viewpoint of suppressing crevice corrosion and electrolytic corrosion. The upper limit of the thickness of the rubber body 102 is not particularly limited with respect to the sealing property, but is actually defined by the dimensions of the bag nut 400 and the like.

上記のようなゴム体１０２の材質は特に限定されないが、ふっ素ゴム、エチレンプロピレンジエンゴム（ＥＰＤＭ）、アクリロニトリルブタジエンゴム（ＮＢＲ）、水素化アクリロニトリルブタジエンゴム（Ｈ−ＮＢＲ）を用いることができ、給湯器などの配管にガスケット１００を用いる際には、耐熱性の良好なふっ素ゴムやエチレンプロピレンジエンゴム（ＥＰＤＭ）が特に好ましい。 The material of the rubber body 102 as described above is not particularly limited, but fluorine rubber, ethylene propylene diene rubber (EPDM), acrylonitrile butadiene rubber (NBR), and hydride acrylonitrile butadiene rubber (H-NBR) can be used for hot water supply. When the gasket 100 is used for piping of a vessel or the like, fluorine rubber or ethylene propylene diene rubber (EPDM) having good heat resistance is particularly preferable.

上記のような環状基材は一定以上の剛性を有しておればよく、従来公知の金属を適宜用いることができる。隙間腐食や電食を抑制する観点からステンレスが好ましい。 The cyclic base material as described above may have a certain rigidity or higher, and a conventionally known metal can be appropriately used. Stainless steel is preferable from the viewpoint of suppressing crevice corrosion and electrolytic corrosion.

上記のようなガスケット１００の製造方法は特に限定されないが、例えば図３に示すような金型５００を用いて製造することができる。すなわち、環状基材１０１の上記外周側領域１０１ａに対応する外周側領域支持部５０１と、環状基材１０１の上記外周面一部領域１０１ｂに対応する外周面一部領域位置決部５０２とを有している。また、金型５００は、ゴム体内周部５０３、およびゴム体外周部５０４を含む、ゴム体１０２の外形に対応するキャビティを有している。このキャビティ内に、例えば、環状基材１０１の他方側の面（図２では上面）における外周部付近から上記ゴム材料を注入すると、注入されたゴム材料は、例えば図３の下方向に流動して外周部が形成されるとともに、ガスケット１００の内周方向、図３の下方向、さらにガスケット１００の外周方向に向けて流動し、上記のように環状基材１０１の外周側領域１０１ａと、外周面一部領域１０１ｂとを除く領域にゴム体１０２が形成される。 The method for manufacturing the gasket 100 as described above is not particularly limited, but it can be manufactured using, for example, the mold 500 as shown in FIG. That is, it has an outer peripheral side region support portion 501 corresponding to the outer peripheral side region 101a of the annular base material 101, and an outer peripheral surface partial region positioning portion 502 corresponding to the outer peripheral surface partial region 101b of the annular base material 101. doing. Further, the mold 500 has a cavity corresponding to the outer shape of the rubber body 102, including the rubber body peripheral portion 503 and the rubber body outer peripheral portion 504. When the rubber material is injected into the cavity from the vicinity of the outer peripheral portion on the other side surface (upper surface in FIG. 2) of the annular base material 101, for example, the injected rubber material flows downward in FIG. The outer peripheral portion is formed, and the rubber flows toward the inner peripheral direction of the gasket 100, the downward direction of FIG. 3, and the outer peripheral direction of the gasket 100, and as described above, the outer peripheral side region 101a of the annular base material 101 and the outer peripheral portion. The rubber body 102 is formed in a region other than the partial surface region 101b.

なお、ゴム材料の注入位置は、図２の上下面のシール面の平面性に影響を与えにくい位置、例えば環状基材１０１の外周面または内周面付近であればよい。外周面付近の場合には、外周面部分へのゴム材料の流れ込みを容易にできる。一方、内周面付近の場合には、注入位置から外周面部分先端（下端）までの距離と、下面側部分の先端（外周端）までの距離との差を短くすることなどができる。 The rubber material may be injected at a position that does not easily affect the flatness of the sealing surface on the upper and lower surfaces of FIG. 2, for example, near the outer peripheral surface or the inner peripheral surface of the annular base material 101. In the case of the vicinity of the outer peripheral surface, the rubber material can easily flow into the outer peripheral surface portion. On the other hand, in the case of the vicinity of the inner peripheral surface, the difference between the distance from the injection position to the tip (lower end) of the outer peripheral surface portion and the distance to the tip end (outer peripheral end) of the lower surface side portion can be shortened.

また、上記金型５００は、実際上は、通常、上型と下型とから構成される。上記上型と下型との分割面の位置は、環状基材の１０１の外周に形成されるゴム体１０２の部分の上端位置や下端位置、すなわちゴム体外周部５０４の上端位置や下端位置でもよく、また、これらの間の位置でもよい。ゴム体外周部５０４の上端位置や下端位置に設定される場合には、成型後に分割面付近に生じるバリを除去する作業が軽減されやすい点や、成型後に製品が全て例えば下型に残るようになりやすいなどの点では好ましい。 Further, the mold 500 is practically usually composed of an upper mold and a lower mold. The position of the dividing surface between the upper mold and the lower mold is also the upper end position or the lower end position of the portion of the rubber body 102 formed on the outer periphery of the annular base material 101, that is, the upper end position or the lower end position of the rubber body outer peripheral portion 504. Well, it may be a position between them. When set to the upper end position or the lower end position of the outer peripheral portion 504 of the rubber body, the work of removing burrs generated near the split surface after molding is easily reduced, and all the products remain in the lower mold after molding, for example. It is preferable in that it is easy to become.

上記のように形成されたガスケット１００は、環状基材１０１の外周面の少なくとも一部がゴム体１０２によって覆われているので、袋ナット４００の雌ねじ部４０１等の内周部分と環状基材１０１の外周面との間に所定の間隙を容易に確保でき、隙間腐食や電食等を抑制または低減することが比較的容易にできる。 In the gasket 100 formed as described above, since at least a part of the outer peripheral surface of the annular base material 101 is covered with the rubber body 102, the inner peripheral portion such as the female threaded portion 401 of the bag nut 400 and the annular base material 101 A predetermined gap can be easily secured between the outer peripheral surface and the outer peripheral surface, and it is relatively easy to suppress or reduce gap corrosion and electrolytic corrosion.

また、外周側領域１０１ａ、および外周面一部領域１０１ｂによって環状基材１０１を位置決めすることによって、ゴム体１０２の寸法精度や、環状基材１０１とゴム体１０２との相対位置精度を高くすることも容易にできる。 Further, by positioning the annular base material 101 by the outer peripheral side region 101a and the outer peripheral surface partial region 101b, the dimensional accuracy of the rubber body 102 and the relative position accuracy between the annular base material 101 and the rubber body 102 are improved. Can be easily done.

また、環状基材の外周端面近傍を両面側から金型に挟み込んで固定する場合に比べて、外周側領域１０１ａが環状基材１０１の一方面側だけに設けられるとともに、その半径方向の幅ａを、上記のように環状基材１０１が挟み込まれる場合に比べて、ゴム体１０２による被覆率を高くすることができる。 Further, as compared with the case where the vicinity of the outer peripheral end face of the annular base material is sandwiched and fixed in the mold from both sides, the outer peripheral side region 101a is provided only on one side of the annular base material 101, and the width a in the radial direction thereof is provided. The coverage of the rubber body 102 can be increased as compared with the case where the annular base material 101 is sandwiched as described above.

１００ ガスケット
１０１ 環状基材
１０１ａ 外周側領域
１０１ｂ 外周面一部領域
１０２ ゴム体
２００ ジョイント
２０１ 端面
２０２ 雄ねじ部
３００ 配管
３０１ フランジ部
４００ 袋ナット
４０１ 雌ねじ部
５００ 金型
５０１ 外周側領域支持部
５０２ 外周面一部領域位置決部
５０３ ゴム体内周部
５０４ ゴム体外周部 100 Gasket 101 Circular base material 101a Outer peripheral side area 101b Outer peripheral surface partial area 102 Rubber body 200 Joint 201 End face 202 Male threaded part 300 Piping 301 Flange part 400 Bag nut 401 Female threaded part 500 Mold 501 Outer peripheral side area Support part 502 Outer peripheral surface 1 Part area Positioning part 503 Rubber body circumference 504 Rubber body outer circumference

Claims (8)

径方向断面が矩形状であるリング状の環状基材と、
上記環状基材の外面を覆う所定の厚さのゴム体とを有するガスケットであって、
上記ゴム体は、上記環状基材の一方側の面における外周側領域と、上記環状基材の外周面における上記外周側領域に隣接する一部の領域である外周面一部領域とを除く領域に形成されていることを特徴とするガスケット。 A ring-shaped annular base material with a rectangular radial cross section ,
A gasket having a rubber body having a predetermined thickness covering the outer surface of the annular base material.
The rubber body is a region excluding an outer peripheral side region on one surface of the annular base material and a partial outer peripheral surface region which is a part region adjacent to the outer peripheral side region on the outer peripheral surface of the annular base material. A gasket characterized by being formed in. 請求項１のガスケットであって、
上記外周側領域における半径方向の幅は、環状基材の厚さに対して１３％以上であることを特徴とするガスケット。 The gasket according to claim 1.
A gasket characterized in that the width in the radial direction in the outer peripheral region is 13% or more with respect to the thickness of the annular base material. 請求項１および請求項２のうち何れか１項のガスケットであって、
上記外周面一部領域は、上記環状基材の上記一方側の面から環状基材の厚さに対して５０％以下であることを特徴とするガスケット。 The gasket according to any one of claims 1 and 2.
A gasket characterized in that a partial region of the outer peripheral surface is 50% or less of the thickness of the annular base material from the one side surface of the annular base material. 請求項１から請求項３のうち何れか１項のガスケットであって、
上記ゴム体の厚さは、０．１ｍｍ以上であることを特徴とするガスケット。 The gasket according to any one of claims 1 to 3.
A gasket characterized in that the thickness of the rubber body is 0.1 mm or more. 請求項４のガスケットであって、
上記ゴム体の厚さは、０．２ｍｍ以上であることを特徴とするガスケット。 The gasket according to claim 4.
A gasket characterized in that the thickness of the rubber body is 0.2 mm or more. 請求項１のガスケットの製造方法であって、
上記環状基材の上記外周側領域に対応する外周側領域支持部と、上記環状基材の上記外周面一部領域に対応する外周面一部領域位置決部とを有するとともに、上記ゴム体の外形に対応するキャビティを有する金型内に、上記環状基材を載置した後、ゴム材料を注入して上記ゴム体を形成することを特徴とするガスケットの製造方法。 The method for manufacturing a gasket according to claim 1.
It has an outer peripheral side region support portion corresponding to the outer peripheral side region of the annular base material, and an outer peripheral surface partial region positioning portion corresponding to the outer peripheral surface partial region of the annular base material, and also has the rubber body. A method for manufacturing a gasket, which comprises placing the annular base material in a mold having a cavity corresponding to the outer shape, and then injecting a rubber material to form the rubber body. 請求項６のガスケットの製造方法であって、
上記環状基材の外周面または内周面付近から上記ゴム材料を注入することを特徴とするガスケットの製造方法。 The method for manufacturing a gasket according to claim 6.
A method for manufacturing a gasket, which comprises injecting the rubber material from the vicinity of the outer peripheral surface or the inner peripheral surface of the annular base material. 請求項６および請求項７のうち何れか１項のガスケットの製造方法であって、
上記金型は、上記外周側領域支持部、および外周面一部領域位置決部が設けられた下型と、上記下型に対向する上型とを有し、
上記上型と下型との分割面は、上記環状基材の外周に形成されるゴム体部分の上端位置、および下端位置、ならびに上記上端位置と下端位置との間の位置の何れかに設定されていることを特徴とするガスケットの製造方法。 The method for manufacturing a gasket according to any one of claims 6 and 7.
The mold has a lower mold provided with the outer peripheral side region support portion and a partial region positioning portion on the outer peripheral surface, and an upper mold facing the lower mold.
The dividing surface between the upper die and the lower die is set to any of the upper end position and the lower end position of the rubber body portion formed on the outer periphery of the annular base material, and the position between the upper end position and the lower end position. A method of manufacturing a gasket, which is characterized by being made of rubber.
JP2017067920A 2017-03-30 2017-03-30 Gasket and how to manufacture the gasket Active JP6827867B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2017067920A JP6827867B2 (en) 2017-03-30 2017-03-30 Gasket and how to manufacture the gasket

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2017067920A JP6827867B2 (en) 2017-03-30 2017-03-30 Gasket and how to manufacture the gasket

Publications (2)

Publication Number Publication Date
JP2018168995A JP2018168995A (en) 2018-11-01
JP6827867B2 true JP6827867B2 (en) 2021-02-10

Family

ID=64018640

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2017067920A Active JP6827867B2 (en) 2017-03-30 2017-03-30 Gasket and how to manufacture the gasket

Country Status (1)

Country Link
JP (1) JP6827867B2 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51101460U (en) * 1975-02-12 1976-08-14
JP4175246B2 (en) * 2003-11-21 2008-11-05 松下電器産業株式会社 Water heater
US8955851B2 (en) * 2006-11-27 2015-02-17 Kenji Matsumoto Metalannular gasket
US20100225110A1 (en) * 2009-03-06 2010-09-09 Dean Christie Sealing washer with multiple sealing rings
JP5393890B2 (en) * 2010-07-08 2014-01-22 内山工業株式会社 Rubber gasket and seal structure using the same
JP5750255B2 (en) * 2010-10-05 2015-07-15 ニチアス株式会社 Seal material and manufacturing method thereof

Also Published As

Publication number Publication date
JP2018168995A (en) 2018-11-01

Similar Documents

Publication Publication Date Title
US10612660B2 (en) Gasket
JP6555901B2 (en) Metal gasket
JP5778238B2 (en) Manufacturing method of sealing device
JP5147066B2 (en) Sealing structure
US9923227B2 (en) Fuel cell end plate, method of manufacturing same, and fuel cell
JP6233506B2 (en) Gasket and sealing structure
JP6827867B2 (en) Gasket and how to manufacture the gasket
WO2016163297A1 (en) Gasket and manufacturing method therefor
JP6399471B2 (en) SEALING DEVICE AND MANUFACTURING METHOD THEREOF
JP2016198949A5 (en) Manufacturing method of gasket
JP6689491B2 (en) gasket
JP5779080B2 (en) Joint structure
JP2009191920A (en) Seal ring and seal ring manufacturing method
JP5141444B2 (en) hose
JP2013044401A (en) Gasket
JP6912958B2 (en) Pipe structure
JPH0314969A (en) Sealing device and its manufacture
JP6737607B2 (en) Method of manufacturing plate with frame
WO2021070589A1 (en) Seal member and seal mechanism
JP6462217B2 (en) Dust seal
JP5786073B1 (en) Flexible Tube
JP4798781B2 (en) Gasket and manufacturing method thereof
CN211778956U (en) Sealing gasket
KR102381541B1 (en) Universal Flange Gasket having Groove and Join Structure for the Same and Design Method of the Same
JP6860306B2 (en) Gasket and sealing device

Legal Events

Date Code Title Description
A80 Written request to apply exceptions to lack of novelty of invention

Free format text: JAPANESE INTERMEDIATE CODE: A80

Effective date: 20170428

RD01 Notification of change of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7426

Effective date: 20170614

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20170614

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20200107

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20200925

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20201013

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20201126

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20210112

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20210120

R150 Certificate of patent or registration of utility model

Ref document number: 6827867

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250