JPH11142206A - Connection apparatus of gas pipe - Google Patents

Connection apparatus of gas pipe

Info

Publication number
JPH11142206A
JPH11142206A JP31900097A JP31900097A JPH11142206A JP H11142206 A JPH11142206 A JP H11142206A JP 31900097 A JP31900097 A JP 31900097A JP 31900097 A JP31900097 A JP 31900097A JP H11142206 A JPH11142206 A JP H11142206A
Authority
JP
Japan
Prior art keywords
gas pipe
seal member
joint
pair
gas
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
Application number
JP31900097A
Other languages
Japanese (ja)
Other versions
JP3526733B2 (en
Inventor
Shigeru Katagiri
滋 片桐
Mariko Hara
満里子 原
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.)
Koyo Sangyo Co Ltd
Original Assignee
Koyo Sangyo Co Ltd
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 Koyo Sangyo Co Ltd filed Critical Koyo Sangyo Co Ltd
Priority to JP31900097A priority Critical patent/JP3526733B2/en
Publication of JPH11142206A publication Critical patent/JPH11142206A/en
Application granted granted Critical
Publication of JP3526733B2 publication Critical patent/JP3526733B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To prevent friction flaw extending to the axial line direction of a gas pipe from being generated which is to be caused by mutual friction of a sealing member, a joint and the gap pipe when the joint is to be linked with the gas pipe. SOLUTION: A step-difference surface 33 is formed on the inner peripheral surface of a flowing-in side end portion 12a as a part of a gas pipe, and made to face the top surface 51a of a joint 50. A thin-walled annular sealing member 60 made of metal is arranged between the step-difference surface 33 and the top surface 51a which face each other. The sealing member 60 is formed as a belleville spring so as to be able to elastically deform in the axial line direction. The sealing member 60 is elastically compressed and deformed, the large diameter side end portion of the one end surface is pressed and brought into contact with the step-difference surface 33 by its own elastic force, ad the small diameter side end portion of the other end is pressed and brought into contact with the top surface 51a.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は、2つのガス管ど
うしを接続するための接続装置に関する。なお、この発
明においてガス管とは、通常のガス管のみならず、ガス
栓の流入側または流出側端部のようにガス管状をなす部
分をも含むものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting device for connecting two gas pipes. In the present invention, the gas pipe includes not only a normal gas pipe but also a gas tube-shaped portion such as an inflow side or an outflow side end of a gas plug.

【0002】[0002]

【従来の技術】一般に、2つのガス管どうしを接続する
場合には、継手を用いた接続装置が採用されている。こ
の接続装置は、一方のガス管に継手の一端部を回転可能
に連結し、他方のガス管に継手の他端部を螺合させるこ
とによってガス管どうしを接続するものである。
2. Description of the Related Art Generally, when two gas pipes are connected to each other, a connecting device using a joint is employed. In this connection device, one end of a joint is rotatably connected to one gas pipe, and the other end of the joint is screwed to the other gas pipe to connect the gas pipes to each other.

【0003】ところで、継手およびこれが回転可能に連
結される一方のガス管とが回転自在であるため、それら
の内周面と外周面との間には不可避の隙間が存在し、そ
の隙間からガスが漏れるおそれがある。そこで、従来の
接続装置においては、継手とガス管との間にOリングを
装着している。しかし、Oリングは火災等によって焼失
ないしは損傷してしまうという問題がある。
Since the joint and one of the gas pipes rotatably connected thereto are rotatable, there is an unavoidable gap between the inner peripheral surface and the outer peripheral surface. May leak. Therefore, in the conventional connection device, an O-ring is mounted between the joint and the gas pipe. However, there is a problem that the O-ring is burned out or damaged by a fire or the like.

【0004】そこで、特開平6−74379号公報に記
載の接続装置においては、ガス管と継手との間に金属製
のシール部材を装着し、このシール部材をガス管および
継手の内外周面に押圧接触させることにより、Oリング
が焼損した場合にもガス管と継手との間からガスが漏れ
るのを防止するようにしている。
Therefore, in the connecting device described in Japanese Patent Application Laid-Open No. 6-74379, a metal seal member is mounted between the gas pipe and the joint, and the seal member is attached to the inner and outer peripheral surfaces of the gas pipe and the joint. The pressure contact prevents the gas from leaking from between the gas pipe and the joint even when the O-ring is burned out.

【0005】[0005]

【発明が解決しようとする課題】しかしながら、上記公
報に記載のものにおいては、シール部材をガス管および
継手の内外周面とに押圧接触させているため、継手をガ
ス管に挿入するときにシール部材がガス管および継手の
内外周面を擦る。その結果、シール部材、ガス管および
継手に軸線方向に延びる擦過傷が発生し、その擦過傷か
らガスが漏れるおそれがあった。
However, in the apparatus described in the above publication, the sealing member is brought into pressure contact with the gas pipe and the inner and outer peripheral surfaces of the joint, so that when the joint is inserted into the gas pipe, the sealing member is sealed. The member rubs the inner and outer peripheral surfaces of the gas pipe and the joint. As a result, abrasion extending in the axial direction occurs in the seal member, the gas pipe, and the joint, and gas may leak from the abrasion.

【0006】[0006]

【課題を解決するための手段】上記の問題を解決するた
めに、請求項1に係る発明は、2つのガス管のうちの一
方のガス管に継手の一端部を回転自在に、かつ他方のガ
ス管側へ離脱不能に嵌合し、上記継手の他端部に形成さ
れたねじ部に他方のガス管を螺合することによって2つ
のガス管を接続するガス管の接続装置において、上記一
方のガス管と上記継手との嵌合部に、その軸線方向に対
向する環状の対向面をそれぞれ形成し、この一対の対向
面間に、耐火材からなるリング状のシール部材を、上記
継手の軸線方向に弾性変形させた状態で上記一対の対向
面間に介装し、シール部材をそれ自体の弾性によって上
記一対の対向面に環状に押圧接触させることにより、上
記一対の対向面間を封止したことを特徴としている。
In order to solve the above-mentioned problem, the invention according to claim 1 is arranged such that one end of a joint is rotatably connected to one of two gas pipes and the other is connected to one of the two gas pipes. In the gas pipe connecting device, the two gas pipes are connected to each other by non-detachably fitting to the gas pipe side and screwing the other gas pipe to a screw portion formed at the other end of the joint. The fitting portion between the gas pipe and the joint is formed with an annular opposing surface facing the axial direction, and a ring-shaped seal member made of a refractory material is provided between the pair of opposing surfaces. It is interposed between the pair of opposing surfaces while being elastically deformed in the axial direction, and the sealing member is brought into annular contact with the pair of opposing surfaces by its own elasticity, thereby sealing between the pair of opposing surfaces. It is characterized by stopping.

【0007】この場合、上記シール部材については、耐
火材で形成するのが望ましく、金属で薄肉に形成するの
が特に望ましい。また、シール部材を円錐状に形成し、
その一端面の内周側部分と他端面の外周側部分とを上記
一対の対向面にそれぞれ押圧接触させてもよく、あるい
は断面略三角形状に形成し、その一端面の内周側部分お
よび外周側部分を上記一対の対向面のいずれか一方と押
圧接触させ、その他端面の径方向の中間部を上記一対の
対向面の他方と押圧接触させてもよい。
In this case, the seal member is desirably formed of a refractory material, and is particularly desirably formed of a thin metal. Also, the sealing member is formed in a conical shape,
The inner peripheral portion of the one end surface and the outer peripheral portion of the other end surface may be pressed into contact with the pair of opposing surfaces, or may be formed in a substantially triangular cross section, and the inner peripheral portion and the outer periphery of the one end surface may be formed. The side portion may be brought into pressure contact with any one of the pair of opposed surfaces, and the radially intermediate portion of the other end surface may be brought into pressure contact with the other of the pair of opposed surfaces.

【0008】上記継手と上記一方のガス管とには、上記
一対の対向面間に位置し、かつ径方向に対向する対向内
周面と対向外周面とをそれぞれ形成し、上記シール部材
の外径が、上記シール部材に外力が作用しない自然状態
においては上記対向内周面の内径より小さく、かつ上記
シール部材が上記一対の対向面によって押圧された状態
では上記対向内周面の内径より大きくなり、上記シール
部材の内径が、上記シール部材に外径が作用しない自然
状態においては上記対向外周面の外径より大きく、かつ
上記シール部材が上記一対の対向面によって押圧された
状態では上記対向外周面の外径より小さくなるように、
上記シール部材の寸法を設定するのが望ましい。
The joint and one of the gas pipes have opposed inner and outer peripheral surfaces that are located between the pair of opposed surfaces and that are radially opposed to each other. The diameter is smaller than the inner diameter of the opposing inner peripheral surface in a natural state where no external force acts on the seal member, and is larger than the inner diameter of the opposing inner peripheral surface when the seal member is pressed by the pair of opposing surfaces. The inner diameter of the seal member is larger than the outer diameter of the opposing outer peripheral surface in a natural state where the outer diameter does not act on the seal member, and the opposing outer surface of the seal member is pressed by the pair of opposing surfaces. So that it is smaller than the outer diameter of the outer peripheral surface,
It is desirable to set the dimensions of the seal member.

【0009】上記シール部材の上記一対の対向面と押圧
する部分については、断面円弧状に形成するのが望まし
い。また、上記ねじ部については、テーパねじ部とする
のが望ましい。
It is desirable that the portion of the seal member that presses the pair of opposing surfaces be formed in an arcuate cross section. Further, it is desirable that the above-mentioned screw portion is a tapered screw portion.

【0010】[0010]

【発明の実施の形態】以下、この発明の実施の形態につ
いて図1〜図14を参照して説明する。なお、以下に述
べる実施の形態は、この発明の接続装置をガスメータを
支持するためのガスメータユニットに適用したものであ
る。勿論、この発明は、ガス管またはガス管状の部分を
有するガス機器にも適用可能である。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. In the embodiments described below, the connection device of the present invention is applied to a gas meter unit for supporting a gas meter. Of course, the present invention is also applicable to gas appliances having a gas pipe or a gas tubular part.

【0011】まず、この発明が適用されたガスメータユ
ニット1を図13および図14に基づいて説明すると、
このガスメータユニット1は、水平に配置された支持板
11を有している。この支持板11の前端の左右には後
方に延びる溝11a,11bが形成されている。この溝
11a,11bの奥側の端部は半円状をなしており、こ
の半円状をなす端部の曲率中心を中心として四半分の円
弧状に延びるガイド孔11c,11dが支持板11に形
成されている。
First, a gas meter unit 1 to which the present invention is applied will be described with reference to FIGS.
The gas meter unit 1 has a support plate 11 arranged horizontally. Grooves 11a and 11b extending rearward are formed on the left and right of the front end of the support plate 11. The inner ends of the grooves 11a and 11b are semicircular, and the guide holes 11c and 11d extending in a quadrant arc around the center of curvature of the semicircular ends are formed on the support plate 11a. Is formed.

【0012】支持板11の左右の両端部には、流入管1
2および流出管13が配置されている。流入管12は、
逆U字状をなしており、その流入側端部12aおよび流
出側端部12bを下方に向けて支持板11に配置されて
いる。流出側端部12bは、支持板11の溝11aに回
動自在に嵌合されている。また、流出側端部12bに
は、支持板11の上面に沿って延びる固定アーム12c
が形成されている。この固定アーム12cの先端部に
は、ボルト14が挿通されている。このボルト14は、
ガイド孔11cをその長手方向へ移動可能に貫通してお
り、ガイド孔11cから下方に突出した下端部にはナッ
ト(図示せず)が螺合されている。したがって、流入管
12を回動させると、ボルト14がガイド孔11cに沿
って移動することになり、流入管12を所望の位置に回
動させた後、ボルト14およびナットを締め付けること
により、流入管12が支持板11に所望の回動位置で固
定されている。また、流入管12の中央部には、流入管
12の内部のガス通路12d(図1および図15参照)
を開閉するためのガス栓部12eが設けられている。こ
のガス栓部12eの構造は、公知のガス栓と同様である
のでその説明は省略する。
At the left and right ends of the support plate 11, inflow pipes 1 are provided.
2 and an outflow pipe 13 are arranged. The inflow pipe 12
It has an inverted U-shape, and is arranged on the support plate 11 with its inflow side end 12a and outflow side end 12b facing downward. The outflow side end 12b is rotatably fitted in the groove 11a of the support plate 11. A fixed arm 12c extending along the upper surface of the support plate 11 is provided on the outflow side end 12b.
Are formed. A bolt 14 is inserted through the tip of the fixed arm 12c. This bolt 14
A nut (not shown) is screwed into a lower end protruding downward from the guide hole 11c so as to movably penetrate the guide hole 11c in the longitudinal direction. Therefore, when the inflow pipe 12 is rotated, the bolt 14 moves along the guide hole 11c. After the inflow pipe 12 is rotated to a desired position, the bolt 14 and the nut are tightened, so that the inflow is performed. A tube 12 is fixed to the support plate 11 at a desired pivot position. Further, a gas passage 12d inside the inflow pipe 12 is provided at the center of the inflow pipe 12 (see FIGS. 1 and 15).
There is provided a gas stopper 12e for opening and closing the valve. The structure of the gas stopper 12e is the same as that of a known gas stopper, and a description thereof will be omitted.

【0013】一方、流出管13も流入管12と同様に、
逆U字状をなしており、流入側端部13aおよび流出側
端部13bを下方に向けて支持板11に配置されてい
る。流入側端部13aは、溝11bに回動自在に嵌合さ
れており、固定アーム13cおよびガイド孔11dを貫
通するボルト15およびナット(図示せず)によって支
持板11に所望の回動位置で固定されている。また、流
出管13の中央部外面には、流出管13内のガス通路
(図示せず)に連通した検査孔(図示せず)が形成され
ている。この検査孔は、流出管13のガス通路内を流れ
るガスの圧力を測定するための圧力計が接続されるもの
であるが、測定時以外は閉栓16によって閉じられてい
る。
On the other hand, the outflow pipe 13 is also similar to the inflow pipe 12,
It has an inverted U shape and is arranged on the support plate 11 with the inflow side end 13a and the outflow side end 13b facing downward. The inflow side end 13a is rotatably fitted in the groove 11b, and is fixed to the support plate 11 at a desired rotation position by a bolt 15 and a nut (not shown) penetrating the fixed arm 13c and the guide hole 11d. Fixed. In addition, an inspection hole (not shown) communicating with a gas passage (not shown) in the outflow pipe 13 is formed on the outer surface of the central portion of the outflow pipe 13. The inspection hole is connected to a pressure gauge for measuring the pressure of the gas flowing in the gas passage of the outflow pipe 13, but is closed by the stopper 16 except during measurement.

【0014】流入管12の流出側端部12bには、ガス
メータMのガス導入管部Maがナット17を介して接続
されている。図15に示すように、ナット17は、流出
側端部12aに抜け止めされた状態で回転自在に設けら
れる一方、ガスメータMのガス導入管部Maに螺合され
ている。したがって、ナット17を締め付けると、流出
側端部12bとガス導入管部Maとの互いに対向する先
端面どうしがパッキンPを介して押圧接触され、両者の
内部が気密に接続される。これにより、流入管12のガ
ス通路12dに供給されたガスがガスメータM内に導入
される。
A gas introduction pipe Ma of a gas meter M is connected to an outflow end 12 b of the inflow pipe 12 via a nut 17. As shown in FIG. 15, the nut 17 is rotatably provided in the outflow side end portion 12 a in a state where the nut 17 is prevented from coming off, and is screwed to the gas introduction pipe portion Ma of the gas meter M. Therefore, when the nut 17 is tightened, the leading end surfaces of the outflow side end portion 12b and the gas introduction tube portion Ma facing each other are pressed and contact via the packing P, and the insides of the two are airtightly connected. Thus, the gas supplied to the gas passage 12d of the inflow pipe 12 is introduced into the gas meter M.

【0015】流出管13の流入側端部13aには、ガス
メータMのガス導出管部Mbがナット18を介して接続
されている。この接続構造は、流入側端部12aとガス
導入管部Maとの接続構造と同様である。したがって、
ガスメータM内を通過したガスは、流出管13のガス通
路に流入する。
A gas outlet Mb of the gas meter M is connected to an inflow end 13 a of the outlet pipe 13 via a nut 18. This connection structure is the same as the connection structure between the inflow side end 12a and the gas introduction pipe Ma. Therefore,
The gas that has passed through the gas meter M flows into the gas passage of the outflow pipe 13.

【0016】このように、ガスメータユニット1は、支
持板11に流入管12および流出管13が取り付けら
れ、流入管12および流出管13にガスメータMが接続
されることにより、全体がユニット化されており、流入
管12の流入側端部12aおよび流出管13の流出側端
部13bは、地面に立設されたガス管19,20の各上
端部にこの発明に係るガス管の接続装置(以下、接続装
置と略称することもある。)30A,30A′を介して
それぞれ接続されている。ガス管19の地中に埋設され
た下端部は、元栓に接続されている。したがって、元栓
を開くとガス管19および流入管12を介してガスメー
タMにガスが導入される。一方、ガス管20の地中に埋
設された下端部は、家庭用の配管に接続されている。し
たがって、ガスメータMから流出したガスは、流出管1
3およびガス管20を介して家庭のガス機器に供給され
る。なお、ガスメータユニット1全体が、ガス管19,
20によって支持されている。
As described above, the gas meter unit 1 is unitized as a whole by attaching the inflow pipe 12 and the outflow pipe 13 to the support plate 11 and connecting the gas meter M to the inflow pipe 12 and the outflow pipe 13. The inflow side end 12a of the inflow pipe 12 and the outflow side end 13b of the outflow pipe 13 are connected to the upper ends of the gas pipes 19 and 20 erected on the ground, respectively. , May be abbreviated as a connection device.) 30A, 30A '. The lower end of the gas pipe 19 buried underground is connected to a main plug. Therefore, when the main stopper is opened, gas is introduced into the gas meter M via the gas pipe 19 and the inflow pipe 12. On the other hand, the lower end of the gas pipe 20 buried in the ground is connected to a domestic pipe. Therefore, the gas flowing out of the gas meter M is transmitted to the outflow pipe 1
The gas is supplied to household gas appliances through the gas pipe 3 and the gas pipe 20. Note that the entire gas meter unit 1 includes a gas pipe 19,
20 supported.

【0017】次に、この発明に係る接続装置30Aにつ
いて説明する。なお、接続装置30A′は接続装置30
Aと同様に構成されているのでその説明は省略する。
Next, the connection device 30A according to the present invention will be described. The connection device 30A 'is connected to the connection device 30A'.
Since the configuration is the same as that of A, the description is omitted.

【0018】まず、接続装置30Aによって接続すべき
流入側端部12aおよびガス管19について説明する
と、図1および図13に示すように、流入側端部12a
の外周面には、断面六角形状をなすスパナ掛け部31が
形成されている。流入側端部12aの内周面には、嵌合
孔部32が形成されている。この嵌合孔部32は、ガス
通路12dより大きな内径を有しており、嵌合孔部32
とガス通路12dとの間には環状をなす段差面(対向
面)33が形成されている。一方、流入側端部12aに
接続されるガス管19は、鉄等の金属からなるものであ
り、その先端部外周面には、テーパ雄ねじ部34が形成
されている。
First, the inflow end 12a and the gas pipe 19 to be connected by the connection device 30A will be described. As shown in FIGS.
Is formed on the outer peripheral surface thereof with a spanner hook 31 having a hexagonal cross section. A fitting hole 32 is formed in the inner peripheral surface of the inflow side end 12a. The fitting hole 32 has an inner diameter larger than the gas passage 12d.
An annular step surface (opposing surface) 33 is formed between the gas passage 12d and the gas passage 12d. On the other hand, the gas pipe 19 connected to the inflow-side end 12a is made of metal such as iron, and has a tapered external thread portion 34 formed on the distal end outer peripheral surface.

【0019】上記流入側端部12aとガス管19とは、
筒状をなす継手50によって接続されている。すなわ
ち、継手50の流入側端部12a側の端部には、断面円
形の嵌合部51が形成されている。この嵌合部51の先
端面(対向面)51aの内周側部分には、環状突出部5
2が形成されている。一方、継手50のガス管19側の
端部にはナット部53が形成されている。このナット部
53の外周面には、断面六角形状をなすスパナ掛け部5
4が形成され、内周面にはテーパ雌ねじ部(ねじ部)5
5が形成されている。
The inflow side end 12a and the gas pipe 19 are
They are connected by a joint 50 having a cylindrical shape. That is, the fitting portion 51 having a circular cross section is formed at the end of the joint 50 on the inflow side end 12a side. An annular projecting portion 5 is provided on the inner peripheral side
2 are formed. On the other hand, a nut portion 53 is formed at the end of the joint 50 on the gas pipe 19 side. The outer peripheral surface of the nut portion 53 is provided with a spanner hook 5 having a hexagonal cross section.
4 is formed, and a tapered female screw portion (screw portion) 5 is formed on the inner peripheral surface.
5 are formed.

【0020】継手50の嵌合部51は、流入側端部12
aの嵌合孔部32に回転自在に挿入されており、嵌合部
51の外周面と嵌合孔部32の内周面との間には、Oリ
ング35,36および止めリング37が装着されてい
る。Oリング35,36によって嵌合部51の外周面と
嵌合孔部32の内周面との間が気密に封止されている。
一方、止めリング37によって嵌合部51が流入側端部
12aにガス管19側へ離脱不能に抜け止めされ、ひい
ては継手50が流入管12に離脱不能に連結されてい
る。
The fitting portion 51 of the joint 50 has an inflow end 12
The O-rings 35 and 36 and the stop ring 37 are mounted between the outer peripheral surface of the fitting portion 51 and the inner peripheral surface of the fitting hole 32. Have been. O-rings 35 and 36 hermetically seal the outer peripheral surface of the fitting portion 51 and the inner peripheral surface of the fitting hole 32.
On the other hand, the fitting portion 51 is prevented from being detached from the inflow side end portion 12a to the gas pipe 19 side by the retaining ring 37, and thus the joint 50 is irremovably connected to the inflow pipe 12.

【0021】なお、この実施の形態では、止めリング3
7が入り込む環状溝38の幅が止めリング37の幅より
広いので、その幅の差の分だけ継手50が流入側端部1
2aに対して軸線方向(図1において上下方向)へ移動
可能である。ただし、継手50は流入側端部12aに移
動不能に連結してもよい。
In this embodiment, the retaining ring 3
7 is wider than the width of the retaining ring 37, so that the joint 50 is connected to the inflow side end 1 by the difference in the width.
2a can be moved in the axial direction (vertical direction in FIG. 1). However, the joint 50 may be immovably connected to the inflow side end 12a.

【0022】継手50のテーパ雌ねじ部55には、ガス
管19のテーパ雄ねじ部34が螺合固定され、これによ
ってガス管19が継手50に接続され、ひいては流入管
12に接続されている。
The tapered male thread portion 34 of the gas pipe 19 is screwed and fixed to the tapered female thread portion 55 of the joint 50, whereby the gas pipe 19 is connected to the joint 50, and further connected to the inflow pipe 12.

【0023】上記継手50の嵌合部51の先端面51a
は、段差面33と間隙をもって対向しており、先端面5
1aと段差面33との間にはシール部材60が配置され
ている。
The distal end surface 51a of the fitting portion 51 of the joint 50
Is opposed to the step surface 33 with a gap, and the tip surface 5
A seal member 60 is arranged between 1a and the step surface 33.

【0024】図2〜図4に示すように、シール部材60
は、肉厚の薄い金属板を環状に、それも円錐台状に成形
したものであり、全体が皿ばね状をなしている。したが
って、シール部材60は、軸線方向に弾性変形可能であ
る。また、シール部材60の幅Wは、その肉厚tよりも
大きいのは勿論のこと、先端面51aと段差面33との
間の最大間隙(止めリング37が環状溝38の下側の側
面に突き当たったときの間隙)より大きくなっている。
したがって、シール部材60は、軸線方向に圧縮変形さ
せられた状態で先端面51aと段差面33との間に装着
されており、それ自体の弾性により、下面の小径側端縁
61が先端面51aに押圧接触され、上面の大径側端縁
62が段差面33に押圧接触されている。また、シール
部材60は、軸線方向に圧縮変形させられると、圧縮変
形されない自然状態のときに比して、その内径dが小さ
くなり、外径Dが大きくなるように変形するが、内径d
は弾性変形前後のいずれにおいても環状突出部52の外
径より大きくなっており、外径Dは嵌合孔部32の内径
より小さくなっている。したがって、シール部材60が
環状突出部52の外周面および嵌合孔部32の内周面に
押圧接触することはない。
As shown in FIG. 2 to FIG.
Is formed by shaping a thin metal plate into an annular shape, also in the shape of a truncated cone, and has a disk spring shape as a whole. Therefore, the seal member 60 is elastically deformable in the axial direction. In addition, the width W of the sealing member 60 is, of course, larger than the thickness t of the sealing member 60, and the maximum gap between the front end surface 51a and the stepped surface 33 (the stop ring 37 is formed on the lower side surface of the annular groove 38). (The gap at the time of collision).
Therefore, the seal member 60 is mounted between the distal end surface 51a and the step surface 33 in a state where it is compressed and deformed in the axial direction, and the small-diameter side edge 61 of the lower surface is attached to the distal end surface 51a by its own elasticity. The large-diameter side edge 62 of the upper surface is pressed against the step surface 33. Further, when the seal member 60 is compressed and deformed in the axial direction, its inner diameter d becomes smaller and its outer diameter D becomes larger as compared with a natural state where it is not compressed and deformed.
Is larger than the outer diameter of the annular projection 52 before and after the elastic deformation, and the outer diameter D is smaller than the inner diameter of the fitting hole 32. Therefore, the sealing member 60 does not come into pressure contact with the outer peripheral surface of the annular projection 52 and the inner peripheral surface of the fitting hole 32.

【0025】上記構成の接続装置30Aを用いて流入管
12の流入側端部12aにガス管19を接続する場合に
は、継手50を流入側端部12aに予め連結しておく。
継手50を流入側端部12aに連結するには、嵌合部5
1の外周面にOリング35,36および止めリング37
を装着するとともに、先端面51aにシール部材60を
載置する。このとき、シール部材60の小径側の端縁6
1が環状突出部52に引っ掛かるので、継手50が若干
傾いたとしてもシール部材60が先端面51aから滑り
落ちることがない。その後、止めリング37を縮径させ
た状態で嵌合部51を嵌合孔部32に挿入する。そし
て、嵌合部51を止めリング37が環状溝38に達する
まで嵌合孔部32に挿入すると、止めリング37が拡径
して嵌合溝38に嵌まり込み、継手50が流入側端部1
2aに回転可能に、かつ離脱不能に連結される。その状
態では、シール部材60の小径側および大径側の端縁6
1,62が先端面51aおよび段差面33にそれぞれ環
状に押圧接触する。その後、継手50のテーパ雌ねじ部
55にガス管19のテーパ雄ねじ部34を螺合させた状
態で継手50を回転させることにより、ガス管19を継
手50に螺合固定する。これにより、ガス管19が継手
50を介して流入管12の流入側端部12aに接続され
る。
When connecting the gas pipe 19 to the inflow side end 12a of the inflow pipe 12 using the connecting device 30A having the above-described configuration, the joint 50 is connected to the inflow side end 12a in advance.
To connect the joint 50 to the inflow-side end 12a, the fitting portion 5
O-rings 35 and 36 and a retaining ring 37
Is mounted, and the seal member 60 is placed on the distal end surface 51a. At this time, the edge 6 on the small diameter side of the seal member 60
Since 1 is hooked on the annular projecting portion 52, even if the joint 50 is slightly inclined, the seal member 60 does not slide down from the distal end surface 51a. Thereafter, the fitting portion 51 is inserted into the fitting hole 32 with the stop ring 37 reduced in diameter. When the fitting portion 51 is inserted into the fitting hole 32 until the stop ring 37 reaches the annular groove 38, the stop ring 37 expands in diameter and fits into the fitting groove 38, and the joint 50 is moved to the inflow side end. 1
It is rotatably and irremovably connected to 2a. In this state, the small diameter side and the large diameter side edge 6 of the seal member 60
1 and 62 are in annular press contact with the tip end surface 51a and the stepped surface 33, respectively. Thereafter, the gas pipe 19 is screwed and fixed to the joint 50 by rotating the joint 50 with the tapered male screw part 34 of the gas pipe 19 screwed to the tapered female screw part 55 of the joint 50. Thereby, the gas pipe 19 is connected to the inflow side end 12 a of the inflow pipe 12 via the joint 50.

【0026】ここで、上記接続装置30Aにおいては、
シール部材60が先端面51aおよび段差面33に環状
に押圧接触するので、仮にOリング35,36が焼失な
いしは破損したとしも、シール部材60が流入側端部1
2aと継手50との間を封止する。したがって、ガス漏
れが発生するのを防止することができる。しかも、継手
50とガス管19とがテーパねじ55,34によって連
結されているので、それらの間からガスが漏れることも
ない。
Here, in the connection device 30A,
Since the seal member 60 is in annular press contact with the front end surface 51a and the step surface 33, even if the O-rings 35, 36 are burned out or broken, the seal member 60 is kept in the inflow side end portion 1.
The space between 2a and the joint 50 is sealed. Therefore, it is possible to prevent gas leakage from occurring. Moreover, since the joint 50 and the gas pipe 19 are connected by the tapered screws 55 and 34, no gas leaks from between them.

【0027】また、シール部材60の内径dが環状突出
部52の外径より大きいので、シール部材60を先端面
51aに装着するときに、シール部材60の内周面が環
状突出部52の外周面を擦ることがない。したがって、
シール部材60の内周面および環状突出部52の外周面
に軸線方向に延びる擦過傷が発生することがない。ま
た、シール部材60の外径Dが嵌合孔部32の内径より
小さいので、嵌合部51を嵌合孔部32に挿入するとき
に、シール部材60の外周面が嵌合孔部32の内周面を
擦ることがない。したがって、それらに軸線方向に延び
る擦過傷が発生することがない。よって、Oリング3
5,36の外周面と嵌合孔部32の内周面との間からガ
スが漏れるのを防止することができる。
Since the inner diameter d of the sealing member 60 is larger than the outer diameter of the annular projecting portion 52, when the sealing member 60 is mounted on the distal end surface 51a, the inner peripheral surface of the sealing member 60 becomes Does not rub the surface. Therefore,
Abrasion extending in the axial direction does not occur on the inner peripheral surface of the seal member 60 and the outer peripheral surface of the annular projection 52. Further, since the outer diameter D of the seal member 60 is smaller than the inner diameter of the fitting hole 32, when the fitting portion 51 is inserted into the fitting hole 32, the outer peripheral surface of the seal member 60 Does not rub the inner surface. Therefore, they do not suffer from abrasion extending in the axial direction. Therefore, O-ring 3
It is possible to prevent gas from leaking from between the outer peripheral surfaces of the holes 5 and 36 and the inner peripheral surface of the fitting hole 32.

【0028】次に、この発明の他の実施の形態について
説明する。なお、以下の実施の形態においては、上記実
施の形態と異なる構成についてのみ説明し、上記実施の
形態と同様の構成部分については同一符号を付してその
説明を省略する。
Next, another embodiment of the present invention will be described. In the following embodiments, only the configuration different from the above embodiment will be described, and the same components as those in the above embodiment will be denoted by the same reference numerals and description thereof will be omitted.

【0029】図5はこの発明の第2の実施の形態たる接
続装置30Bを示すものであり、この接続装置30Bに
おいては、嵌合孔部32が、基端側(図5において上
側)の小径孔部32Aと、先端側(下側)の大径孔部3
2Bとから構成されており、小径孔部32Aと大径孔部
32Bとの間に段差面(対向面)39が形成されてい
る。これに対応して、継手50の嵌合部51が、基端側
の小径部51Aと、先端側の大径部51Bとから構成さ
れており、小径部51Aと大径部51Bとの間に段差面
(対向面)56が形成されている。そして、小径孔部3
2Aおよび大径孔部32Bに小径部51Aおよび大径部
51Bがそれぞれ嵌合されるとともに、段差面39,5
6間にシール部材60が配置されている。勿論、シール
部材60の内径は、小径部51Aの外径より大きく、シ
ール部材60の外径は大径孔部32Bの内径より小さく
なっている。なお、小径孔部32Aと小径部51Aとの
間にOリング35,36が装着され、大径孔部32Bと
大径部51Bとの間に止めリング37が装着されてい
る。
FIG. 5 shows a connection device 30B according to a second embodiment of the present invention. In this connection device 30B, the fitting hole 32 has a small diameter on the base end side (upper side in FIG. 5). The hole 32A and the large-diameter hole 3 on the tip side (lower side)
2B, and a step surface (opposing surface) 39 is formed between the small-diameter hole portion 32A and the large-diameter hole portion 32B. Correspondingly, the fitting portion 51 of the joint 50 includes a small-diameter portion 51A on the base end side and a large-diameter portion 51B on the distal end side, and is provided between the small-diameter portion 51A and the large-diameter portion 51B. A step surface (opposing surface) 56 is formed. And the small diameter hole 3
The small-diameter portion 51A and the large-diameter portion 51B are fitted into the 2A and the large-diameter hole portion 32B, respectively, and the step surfaces 39, 5 are provided.
A seal member 60 is arranged between the six. Of course, the inner diameter of the seal member 60 is larger than the outer diameter of the small diameter portion 51A, and the outer diameter of the seal member 60 is smaller than the inner diameter of the large diameter hole 32B. O-rings 35 and 36 are mounted between the small-diameter hole 32A and the small-diameter portion 51A, and a stop ring 37 is mounted between the large-diameter hole 32B and the large-diameter portion 51B.

【0030】図6に示す接続装置30Cは、接続装置3
0Bをさらに変形したものであり、この接続装置30C
においては、止めリング37が小径孔部32Aと小径部
51Aとの間に、それもOリング35の上側に配置され
ている。
The connecting device 30C shown in FIG.
0B is further modified, and this connecting device 30C
In, the stop ring 37 is disposed between the small-diameter hole portion 32A and the small-diameter portion 51A, and also above the O-ring.

【0031】図7はこの発明の第4の実施の形態たる接
続装置30Dを示すものであり、この接続装置30Dに
おいては、流入側端部12aの外周に継手50が嵌合さ
れている。すなわち、流入側端部12aの先端部には、
スパナ掛け部31に続く断面円形の筒部40が形成され
ている。この筒部40が継手50の嵌合部51の内周面
に回転自在に嵌合されており、筒部40の外周面と嵌合
部51の内周面との間にOリング35,36および止め
リング37が装着されている。また、筒部40の先端面
(対向面)40aの内周側部分には、環状突起42が形
成されている。一方、継手50の内周面には、軸線方向
における中央部に環状突出部57が形成されている。こ
の環状突出部57の上側の側面(対向面)57aは、先
端面40aと間隔をもって対向しており、先端面40a
と側面57aとの間にシール部材60が装着されてい
る。
FIG. 7 shows a connection device 30D according to a fourth embodiment of the present invention. In this connection device 30D, a joint 50 is fitted on the outer periphery of the inflow side end 12a. That is, at the tip of the inflow side end 12a,
A cylindrical section 40 having a circular cross section is formed following the spanner hook section 31. The tubular portion 40 is rotatably fitted to the inner peripheral surface of the fitting portion 51 of the joint 50, and O-rings 35 and 36 are provided between the outer peripheral surface of the tubular portion 40 and the inner peripheral surface of the fitting portion 51. And a stop ring 37. Further, an annular projection 42 is formed on the inner peripheral side portion of the distal end surface (opposing surface) 40 a of the cylindrical portion 40. On the other hand, an annular projection 57 is formed on the inner peripheral surface of the joint 50 at the center in the axial direction. The upper side surface (opposing surface) 57a of the annular projecting portion 57 is opposed to the distal end surface 40a with an interval, and the distal end surface 40a
The seal member 60 is mounted between the side surface 57a.

【0032】次に、この発明において用いられるシール
部材の変形例を説明する。なお、以下に述べる各シール
部材は、各接続装置30A,30B,30C,30Dに
それぞれ採用可能である。
Next, a modified example of the seal member used in the present invention will be described. In addition, each seal member described below can be adopted for each of the connection devices 30A, 30B, 30C, and 30D.

【0033】図8に示すシール部材60Aは、その一端
面の小径側端部と他端面の大径側端部とに、シール部材
60Aに沿って環状に延びる断面円弧状の円弧面部6
3,64がそれぞれ形成されている。そして、一方の円
弧面部63が継手30と流入側端部12aとの対向面
(例えば、図1の先端面51aおよび段差面33)の一
方に押圧接触し、他方の円弧面部64が他方の対向面に
押圧接触するようになっている。シール部材60Aに円
弧面部63,64を形成すると、シール部材60Aと一
対の対向面とをより確実に環状に押圧接触させることが
できる。
The seal member 60A shown in FIG. 8 has an arc-shaped cross-section 6 having an arc-shaped cross section extending annularly along the seal member 60A at one end of the small-diameter end and at the other end of the large-diameter end.
3, 64 are formed respectively. Then, one arc surface portion 63 is in pressure contact with one of the opposing surfaces (for example, the distal end surface 51a and the step surface 33 in FIG. 1) of the joint 30 and the inflow side end portion 12a, and the other arc surface portion 64 is in contact with the other. It comes into pressure contact with the surface. When the arc surface portions 63 and 64 are formed on the seal member 60A, the seal member 60A and the pair of opposing surfaces can be more reliably brought into annular contact with each other.

【0034】図9に示すシール部材60Bは、断面略三
角形状に形成されており、その一端面の小径側端部およ
び大径側端部と他端面の中央部とに、シール部材30B
に沿って環状に延びる断面円弧状の円弧面部65,6
6,67がそれぞれ形成されている。そして、円弧面部
65,66が継手50と流入側端部12aとの対向面の
一方に押圧接触し、円弧面部67が他方の対向面に押圧
接触するようになっている。
The seal member 60B shown in FIG. 9 is formed in a substantially triangular cross section. One end of the seal member 60B has a small-diameter end and a large-diameter end and a central portion of the other end has a seal member 30B.
Arc surface portions 65, 6 having an arc-shaped cross section extending annularly along
6, 67 are respectively formed. Then, the arcuate surface portions 65 and 66 are in pressure contact with one of the opposing surfaces of the joint 50 and the inflow side end portion 12a, and the arcuate surface portion 67 is in press contact with the other opposing surface.

【0035】図10に示すシール部材60Cは、シール
部材60Aを変形したものであり、円弧面部63,64
に続いてシール部材60Cの軸線方向(図10において
上下方向)に延びる円筒部68,69がそれぞれ形成さ
れている。図11に示すように、シール部材60Cは、
それに外力が作用しない自然状態にあるときには、円筒
部68の内径dが環状突出部52の外周面(対向外周
面)52aの外径より若干大きく、円筒部69の外径D
が嵌合孔部32の内周面(対向内周面)32aの内径よ
り若干小さくなっている。したがって、シール部材60
Cを先端面51aに載置するときに、円筒部68が環状
突出部52の外周面52aに擦ることがない。また、嵌
合部51を嵌合孔部32に挿入するときに、円筒部69
が嵌合孔部32の内周面32aを擦ることがない。よっ
て、シール部材60Cの内外周面、環状突出部52の外
周面52aおよび嵌合孔部32の内周面32aに継手6
0Cの軸線方向に延びる擦過傷が発生することがない。
A seal member 60C shown in FIG. 10 is a modification of the seal member 60A, and has arc-shaped surface portions 63 and 64.
Subsequently, cylindrical portions 68 and 69 extending in the axial direction (the vertical direction in FIG. 10) of the seal member 60C are formed, respectively. As shown in FIG. 11, the sealing member 60C
In a natural state in which no external force acts thereon, the inner diameter d of the cylindrical portion 68 is slightly larger than the outer diameter of the outer peripheral surface (opposing outer peripheral surface) 52a of the annular projection 52, and the outer diameter D of the cylindrical portion 69 is
Is slightly smaller than the inner diameter of the inner peripheral surface (opposed inner peripheral surface) 32a of the fitting hole 32. Therefore, the sealing member 60
When the C is placed on the distal end surface 51a, the cylindrical portion 68 does not rub against the outer peripheral surface 52a of the annular projecting portion 52. When inserting the fitting portion 51 into the fitting hole 32, the cylindrical portion 69
Does not rub the inner peripheral surface 32 a of the fitting hole 32. Therefore, the joint 6 is attached to the inner and outer peripheral surfaces of the seal member 60C, the outer peripheral surface 52a of the annular projection 52, and the inner peripheral surface 32a of the fitting hole 32.
Abrasion extending in the axial direction of 0C does not occur.

【0036】また、図12に示すように、シール部材6
0Cは、先端面51aと段差面33との間に装着されて
圧縮変形されると、その変形に伴って内径dが小さく、
外径Dが大きくなる。この場合、シール部材60Cは、
内径dが環状突出部52の外径より小さくなり、外径D
が嵌合孔部32の内径より大きくなるように、その寸法
が設定されている。したがって、シール部材60Cを先
端面51aと段差面33との間に装着すると、円筒部6
8が環状突出部52の外周面52aに押圧接触し、円筒
部69が嵌合孔部32の内周面32aに押圧接触する。
これにより、継手60Cと流入管12の流入側端部12
aとの間からガスが漏れるのをより一層確実に防止する
ことができる。しかも、円筒部68,69が外周面52
aおよび内周面32aに接触するのは、嵌合孔部32に
対する嵌合部51の挿入完了直前であるから、継手60
Cの軸線方向に延びる擦過傷が発生することもない。
Further, as shown in FIG.
0C is attached between the front end surface 51a and the step surface 33 and is compressed and deformed.
The outer diameter D increases. In this case, the sealing member 60C is
The inner diameter d is smaller than the outer diameter of the annular projection 52, and the outer diameter D
Is set to be larger than the inner diameter of the fitting hole 32. Therefore, when the seal member 60C is mounted between the distal end surface 51a and the step surface 33, the cylindrical portion 6
8 comes into pressure contact with the outer peripheral surface 52 a of the annular projection 52, and the cylindrical portion 69 comes into pressure contact with the inner peripheral surface 32 a of the fitting hole 32.
Thereby, the joint 60C and the inflow side end 12
Gas can be more reliably prevented from leaking from the gap a. In addition, the cylindrical portions 68 and 69 are
a and the inner peripheral surface 32a come into contact with the fitting portion 51 immediately before the insertion of the fitting portion 51 is completed.
Abrasion extending in the axial direction of C does not occur.

【0037】なお、この発明は、上記の実施の形態に限
定されるものでなく、適宜変更可能である。例えば、上
記の実施の形態においては、継手50の内周面にテーパ
雌ねじ部55を形成し、ガス管19の外周面にテーパ雄
ねじ部34を形成しているが、継手50の外周面にテー
パ雄ねじ部を形成し、ガス管19の内周面にテーパ雌ね
じ部を形成してもよい。また、テーパ雌ねじ部55およ
びテーパ雌ねじ部34に代えて、ストレートねじ部を形
成してもよい。その場合には、例えば、継手50の内周
面にガス管19の先端面が突き当たる当接面を形成す
る。また、金属製のシール部材60,60A,60B,
60Cに代えて、耐火材からなるシール部材を用いても
よい。
The present invention is not limited to the above embodiment, but can be changed as appropriate. For example, in the above-described embodiment, the tapered female thread 55 is formed on the inner peripheral surface of the joint 50 and the tapered male thread 34 is formed on the outer peripheral surface of the gas pipe 19. A male screw portion may be formed, and a tapered female screw portion may be formed on the inner peripheral surface of the gas pipe 19. Further, a straight screw portion may be formed instead of the tapered female screw portion 55 and the tapered female screw portion 34. In that case, for example, a contact surface with which the distal end surface of the gas pipe 19 abuts is formed on the inner peripheral surface of the joint 50. Also, metal sealing members 60, 60A, 60B,
Instead of 60C, a seal member made of a refractory material may be used.

【0038】[0038]

【発明の効果】以上説明したように、請求項1に係る発
明によれば、Oリング等が焼損したとしても継手とガス
管との間からガスが漏れるのを防止することができるの
は勿論のこと、継手とガス管とに擦過傷が発生するのを
防止することができるという効果が得られる。特に、請
求項4,5に係る発明によれば、ガス漏れをより一層確
実に防止することができるという効果が得られる。
As described above, according to the first aspect of the present invention, even if the O-ring or the like is burned, gas can be prevented from leaking from between the joint and the gas pipe. That is, an effect is obtained that abrasion can be prevented from occurring between the joint and the gas pipe. In particular, according to the fourth and fifth aspects of the invention, an effect is obtained that gas leakage can be more reliably prevented.

【図面の簡単な説明】[Brief description of the drawings]

【図1】この発明の第1の実施の形態を示す図13のX
−X線に沿う拡大断面図である。
1 shows a first embodiment of the present invention; FIG.
-It is an expanded sectional view which follows an X-ray.

【図2】この発明に係るシール部材を示す図であって、
図2(A)はその平面図、図2(B)はその側面図であ
る。
FIG. 2 is a view showing a seal member according to the present invention,
FIG. 2A is a plan view thereof, and FIG. 2B is a side view thereof.

【図3】図2のX−X線に沿う拡大断面図である。FIG. 3 is an enlarged sectional view taken along line XX of FIG. 2;

【図4】図1のX円部の拡大図である。FIG. 4 is an enlarged view of an X circle portion in FIG. 1;

【図5】この発明の第2の実施の形態を示す図1と同様
の断面図である。
FIG. 5 is a sectional view similar to FIG. 1, showing a second embodiment of the present invention.

【図6】この発明の第3の実施の形態を示す図1と同様
の断面図である。
FIG. 6 is a sectional view similar to FIG. 1, showing a third embodiment of the present invention.

【図7】この発明の第4の実施の形態を示す図1と同様
の断面図である。
FIG. 7 is a sectional view similar to FIG. 1, showing a fourth embodiment of the present invention.

【図8】この発明において用いられるシール部材を示す
図3と同様の断面図である。
FIG. 8 is a sectional view similar to FIG. 3, showing a seal member used in the present invention.

【図9】この発明において用いられるシール部材を示す
図3と同様の断面図である。
FIG. 9 is a sectional view similar to FIG. 3, showing a seal member used in the present invention.

【図10】この発明において用いられるシール部材を示
す図3と同様の断面図である。
FIG. 10 is a sectional view similar to FIG. 3, showing a seal member used in the present invention.

【図11】図10に示すシール部材を図1に示す接続装
置に採用した場合を示す図4と同様の断面図であって、
シール部材がその軸線方向に弾性圧縮される前の状態で
図示されている。
FIG. 11 is a sectional view similar to FIG. 4, showing a case where the seal member shown in FIG. 10 is employed in the connection device shown in FIG. 1;
The seal member is illustrated before being elastically compressed in its axial direction.

【図12】図10に示すシール部材を図1に示す接続装
置に採用した場合を示す図4と同様の断面図であって、
シール部材がその軸線方向に弾性圧縮された後の状態で
図示されている。
FIG. 12 is a sectional view similar to FIG. 4, showing a case where the seal member shown in FIG. 10 is employed in the connection device shown in FIG. 1;
The seal member is shown after being elastically compressed in its axial direction.

【図13】この発明が適用されたガスメータユニットを
示す正面図である。
FIG. 13 is a front view showing a gas meter unit to which the present invention is applied.

【図14】同ガスメータユニットの平面図である。FIG. 14 is a plan view of the gas meter unit.

【図15】流入管の流出側端部とガスメータの導入管部
との接続構造を示す図13のY−Y線に沿う拡大断面図
である。
FIG. 15 is an enlarged sectional view taken along line YY of FIG. 13 showing a connection structure between an outflow side end of an inflow pipe and an introduction pipe of a gas meter.

【符号の説明】[Explanation of symbols]

12 流入管(一方のガス管) 13 流出管(一方のガス管) 19 ガス管(他方のガス管) 20 ガス管(他方のガス管) 30A ガス管の接続装置 30B ガス管の接続装置 30C ガス管の接続装置 30D ガス管の接続装置 32a 嵌合孔部の内周面(対向内周面) 33 段差面(対向面) 39 段差面(対向面) 40a 先端面(対向面) 50 継手 51a 先端面(対向面) 52a 環状突出部の外周面(対向外周面) 56 段差面(対向面) 57a 側面(対向面) 60 シール部材 60A シール部材 60B シール部材 60C シール部材 63 円弧面部(対向面との接触部) 64 円弧面部(対向面との接触部) 65 円弧面部(対向面との接触部) 66 円弧面部(対向面との接触部) 67 円弧面部(対向面との接触部) Reference Signs List 12 inflow pipe (one gas pipe) 13 outflow pipe (one gas pipe) 19 gas pipe (the other gas pipe) 20 gas pipe (the other gas pipe) 30A gas pipe connection device 30B gas pipe connection device 30C gas Pipe connecting device 30D Gas pipe connecting device 32a Inner peripheral surface of fitting hole (opposed inner peripheral surface) 33 Step surface (opposed surface) 39 Step surface (opposed surface) 40a Tip surface (opposed surface) 50 Joint 51a tip Surface (opposing surface) 52a Outer peripheral surface of annular projecting portion (opposing outer peripheral surface) 56 Step surface (opposing surface) 57a Side surface (opposing surface) 60 Sealing member 60A Sealing member 60B Sealing member 60C Sealing member 63 64 Circular surface (contact with opposing surface) 65 Circular surface (contact with opposing surface) 66 Circular surface (contact with opposing surface) 67 Circular surface (contact with opposing surface)

Claims (8)

【特許請求の範囲】[Claims] 【請求項1】 2つのガス管のうちの一方のガス管に継
手の一端部を回転自在に、かつ他方のガス管側へ離脱不
能に嵌合し、上記継手の他端部に形成されたねじ部に他
方のガス管を螺合することによって2つのガス管を接続
するガス管の接続装置において、上記一方のガス管と上
記継手との嵌合部に、その軸線方向に対向する環状の対
向面をそれぞれ形成し、この一対の対向面間に、耐火材
からなるリング状のシール部材を、上記継手の軸線方向
に弾性変形させた状態で上記一対の対向面間に介装し、
シール部材をそれ自体の弾性によって上記一対の対向面
に環状に押圧接触させることにより、上記一対の対向面
間を封止したことを特徴とするガス管の接続装置。
An end of a joint is rotatably fitted to one of two gas pipes and is irremovably fitted to the other gas pipe, and is formed at the other end of the joint. In a gas pipe connecting device for connecting two gas pipes by screwing the other gas pipe to a screw portion, a fitting portion between the one gas pipe and the joint has an annular shape opposed to an axial direction thereof. Each of the opposed surfaces is formed, and a ring-shaped seal member made of a refractory material is interposed between the pair of opposed surfaces in a state of being elastically deformed in the axial direction of the joint, between the pair of opposed surfaces,
A gas pipe connection device, wherein a sealing member is brought into annular contact with the pair of opposing surfaces by its own elasticity to seal the space between the pair of opposing surfaces.
【請求項2】 上記シール部材を耐火材で形成したこと
を特徴とする請求項1に記載のガス管の接続装置。
2. The gas pipe connection device according to claim 1, wherein said seal member is formed of a refractory material.
【請求項3】 上記シール部材を金属で薄肉に形成した
ことを特徴とする請求項2に記載のガス管の接続装置。
3. The gas pipe connection device according to claim 2, wherein the seal member is formed of a thin metal.
【請求項4】 上記シール部材を円錐状に形成し、その
一端面の内周側部分と他端面の外周側部分とを上記一対
の対向面にそれぞれ押圧接触させたことを特徴とする請
求項1〜3のいずれかに記載のガス管の接続装置。
4. The sealing member is formed in a conical shape, and an inner peripheral portion of one end surface and an outer peripheral portion of the other end surface are brought into press contact with the pair of opposing surfaces, respectively. The gas pipe connection device according to any one of claims 1 to 3.
【請求項5】 上記シール部材を断面略三角形状に形成
し、その一端面の内周側部分および外周側部分を上記一
対の対向面のいずれか一方と押圧接触させ、その他端面
の径方向の中間部を上記一対の対向面の他方と押圧接触
させたことを特徴とする請求項1〜3のいずれかに記載
のガス管の接続装置。
5. The seal member is formed to have a substantially triangular cross section, and an inner peripheral portion and an outer peripheral portion of one end surface thereof are brought into pressure contact with one of the pair of opposing surfaces, and the other end surface is formed in a radial direction. The gas pipe connection device according to any one of claims 1 to 3, wherein the intermediate portion is brought into pressure contact with the other of the pair of opposing surfaces.
【請求項6】 上記継手と上記一方のガス管とには、上
記一対の対向面間に位置し、かつ径方向に対向する対向
内周面と対向外周面とをそれぞれ形成し、上記シール部
材の外径が、上記シール部材に外力が作用しない自然状
態においては上記対向内周面の内径より小さく、かつ上
記シール部材が上記一対の対向面によって押圧された状
態では上記対向内周面の内径より大きくなり、上記シー
ル部材の内径が、上記シール部材に外径が作用しない自
然状態においては上記対向外周面の外径より大きく、か
つ上記シール部材が上記一対の対向面によって押圧され
た状態では上記対向外周面の外径より小さくなるよう
に、上記シール部材の寸法を設定したことを特徴とする
請求項1〜5のいずれかに記載のガス管の接続装置。
6. The seal member has an inner peripheral surface and an outer peripheral surface which are located between the pair of opposed surfaces and which are radially opposed to each other. Is smaller than the inner diameter of the opposing inner peripheral surface in a natural state where no external force acts on the seal member, and the inner diameter of the opposing inner peripheral surface when the seal member is pressed by the pair of opposing surfaces. In the natural state in which the outer diameter does not act on the seal member, the inner diameter of the seal member is larger than the outer diameter of the opposed outer peripheral surface, and the seal member is pressed by the pair of opposed surfaces. The gas pipe connection device according to any one of claims 1 to 5, wherein a size of the seal member is set so as to be smaller than an outer diameter of the opposed outer peripheral surface.
【請求項7】 上記シール部材の上記一対の対向面に押
圧接触する部分を、断面円弧状に形成したことを特徴と
する請求項1〜6のいずれかに記載のガス管の接続装
置。
7. The gas pipe connection device according to claim 1, wherein a portion of the seal member that presses and contacts the pair of opposing surfaces is formed in an arc-shaped cross section.
【請求項8】 上記継手のねじ部がテーパねじ部である
ことを特徴とする請求項1〜7のいずれかに記載のガス
管の接続装置。
8. The gas pipe connection device according to claim 1, wherein the thread portion of the joint is a tapered thread portion.
JP31900097A 1997-11-05 1997-11-05 Gas pipe connection device Expired - Lifetime JP3526733B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31900097A JP3526733B2 (en) 1997-11-05 1997-11-05 Gas pipe connection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31900097A JP3526733B2 (en) 1997-11-05 1997-11-05 Gas pipe connection device

Publications (2)

Publication Number Publication Date
JPH11142206A true JPH11142206A (en) 1999-05-28
JP3526733B2 JP3526733B2 (en) 2004-05-17

Family

ID=18105386

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31900097A Expired - Lifetime JP3526733B2 (en) 1997-11-05 1997-11-05 Gas pipe connection device

Country Status (1)

Country Link
JP (1) JP3526733B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002131109A (en) * 2000-10-20 2002-05-09 Tokyo Gas Co Ltd Fixture for gas meter
JP2009115169A (en) * 2007-11-05 2009-05-28 Toyota Motor Corp Seal member
JP2021165715A (en) * 2020-04-08 2021-10-14 大阪瓦斯株式会社 Meter coupler structure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110285950A (en) * 2019-06-21 2019-09-27 浙江高强度紧固件有限公司 A kind of disc spring detection method and its detection device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002131109A (en) * 2000-10-20 2002-05-09 Tokyo Gas Co Ltd Fixture for gas meter
JP2009115169A (en) * 2007-11-05 2009-05-28 Toyota Motor Corp Seal member
JP2021165715A (en) * 2020-04-08 2021-10-14 大阪瓦斯株式会社 Meter coupler structure

Also Published As

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JP3526733B2 (en) 2004-05-17

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