JP2002195473A - Joint for gas pipe - Google Patents
Joint for gas pipeInfo
- Publication number
- JP2002195473A JP2002195473A JP2000397208A JP2000397208A JP2002195473A JP 2002195473 A JP2002195473 A JP 2002195473A JP 2000397208 A JP2000397208 A JP 2000397208A JP 2000397208 A JP2000397208 A JP 2000397208A JP 2002195473 A JP2002195473 A JP 2002195473A
- Authority
- JP
- Japan
- Prior art keywords
- gas pipe
- gas
- downstream
- joint member
- tapered
- 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
Links
Landscapes
- Joints Allowing Movement (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、下流側に剛性を
有するガス管を接続するためのガス管用継手に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas pipe joint for connecting a rigid gas pipe downstream.
【０００２】[0002]
【従来の技術】一般にこの種の継手は、内部を貫通する
ガス通路が形成された一次側継手部材と、この一次側継
手部材の下流側端部に上流側端部が回動可能に、かつ気
密に嵌合された筒状をなす二次側継手部材とを有してお
り、二次側継手部材の下流側端部の内周面には、テーパ
雌ねじ部が形成されている。そして、このテーパねじ部
に剛性を有するガス管、例えば鉄管が螺合固定されるよ
うになっている。2. Description of the Related Art Generally, a joint of this type has a primary joint member having a gas passage penetrating therethrough, and an upstream end portion rotatable at a downstream end portion of the primary joint member, and A secondary joint member having a tubular shape fitted in an airtight manner, and a tapered female screw portion is formed on the inner peripheral surface of the downstream end portion of the secondary joint member. A gas pipe having rigidity, for example, an iron pipe, is screwed and fixed to the tapered screw portion.
【０００３】[0003]
【発明が解決しようとする課題】上記従来の継手におい
ては、ガスが一次側継手部材から二次側継手部材へ流入
する際に大きな圧力損失が発生するという問題があっ
た。すなわち、二次側継手部材に接続されるガス管の内
径は、ガス管内における圧力損失を小さく抑えるため
に、ガス通路の内径と同等以上に設定される。したがっ
て、ガス管が螺合されるテーパ雌ねじ部は、少なくとも
ガス管の肉厚の分だけガス通路の内径より大径に設定さ
れる。また、ガス管はテーパ雌ねじ部全体に螺合される
ことなく、通常は、テーパ雌ねじ部の途中までしか螺合
されない。この結果、一次側継手部材の下流側端部とガ
ス管の上流側端部との間には、テーパ雌ねじ部の一部が
存在することになる。したがって、ガス通路から流出し
たガスは、ガス管に流入する前にテーパ雌ねじ部内を流
れることになる。ここで、テーパ雌ねじ部の内径がガス
通路及びガス管のいずれの内径よりも大径であるため、
ガス通路から流出したガスの流れがテーパ雌ねじ部にお
いて大きく乱される。この結果、ガスが一次側継手部材
から二次側継手部材に流れる際に、大きな圧力損失が発
生していたのである。In the above-mentioned conventional joint, there is a problem that a large pressure loss occurs when gas flows from the primary joint member to the secondary joint member. That is, the inner diameter of the gas pipe connected to the secondary-side joint member is set to be equal to or larger than the inner diameter of the gas passage in order to reduce the pressure loss in the gas pipe. Therefore, the diameter of the tapered female screw portion with which the gas pipe is screwed is set to be larger than the inner diameter of the gas passage by at least the thickness of the gas pipe. Further, the gas pipe is not screwed into the entire tapered female screw portion, but is usually screwed only halfway through the tapered female screw portion. As a result, between the downstream end of the primary joint member and the upstream end of the gas pipe, a part of the tapered female thread is present. Therefore, the gas flowing out of the gas passage flows through the tapered female thread before flowing into the gas pipe. Here, since the inner diameter of the tapered female screw portion is larger than the inner diameter of any of the gas passage and the gas pipe,
The flow of gas flowing out of the gas passage is largely disturbed in the tapered female screw portion. As a result, when the gas flows from the primary joint member to the secondary joint member, a large pressure loss has occurred.
【０００４】[0004]
【課題を解決するための手段】この発明は、上記の問題
を解決するためになされたもので、内部を貫通するガス
通路が形成された一次側継手部材と、この一次側継手部
材の下流側端部の外周に上流側端部が回動可能に、かつ
気密に嵌合された筒状の二次側継手部材とを備え、上記
二次側継手の下流側端部の内部には、上記ガス通路の下
流側端部の内径より大径であるテーパ雌ねじ部が形成さ
れ、このテーパ雌ねじ部にガス管が螺合固定されるガス
管用継手において、上記ガス通路の下流側の開口部に筒
体の上流側端部を嵌合し、この筒体の下流側端部を上記
テーパ雌ねじ部に螺合されたガス管の近傍又はその内部
に位置させたことを特徴としている。この場合、上記筒
体が、一定の内径を有していてもよく、あるいは少なく
とも下流側端部に、下流側へ向かって大径になるテーパ
部が形成されていてもよい。筒体にテーパ部が形成され
る場合には、上記テーパ部が上記ガス管の内部に挿入さ
れ、上記テーパ部の先端縁が上記ガス管の内周面にほぼ
接触させられていることが望ましい。上記ガス通路の下
流側の開口部に当該開口部の内径より大径である嵌合孔
部が形成され、この嵌合孔部に上記筒体が嵌合されてい
ることが望ましい。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has a primary joint member having a gas passage penetrating therethrough, and a downstream side of the primary joint member. An upstream end is rotatable on the outer periphery of the end, and a cylindrical secondary joint member fitted in an airtight manner is provided, and inside the downstream end of the secondary joint, In a gas pipe joint in which a tapered female screw portion having a diameter larger than the inner diameter of the downstream end of the gas passage is formed, and a gas pipe is screwed and fixed to the tapered female screw portion, a pipe is provided at an opening on the downstream side of the gas passage. The upstream end of the body is fitted, and the downstream end of the cylindrical body is located near or inside the gas pipe screwed into the tapered female screw portion. In this case, the cylindrical body may have a fixed inner diameter, or at least a downstream end portion may be formed with a tapered portion whose diameter increases toward the downstream side. In the case where the tapered portion is formed in the cylindrical body, it is preferable that the tapered portion is inserted into the gas pipe, and the leading edge of the tapered portion is substantially in contact with the inner peripheral surface of the gas pipe. . It is preferable that a fitting hole having a diameter larger than the inner diameter of the opening is formed in the opening on the downstream side of the gas passage, and the cylindrical body is fitted in the fitting hole.
【０００５】[0005]
【発明の実施の形態】以下、この発明をの実施の形態に
ついて図１〜図４を参照して説明する。図１はこの発明
の一実施の形態を示す。この実施の形態は、この発明を
ガス栓（ガス管用継手）１に適用したものであり、特に
ガス栓本体（一次側継手部材）２と、ナット部材（二次
側継手部材）３との間にこの発明が適用されている。な
お、この発明は、ガス栓１にのみ適用し得るものではな
く、一次側継手部材と、この下流側端部に回動可能に連
結された二次側継手部材とを有するガス管用継手にも適
用可能である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 shows an embodiment of the present invention. In this embodiment, the present invention is applied to a gas plug (gas pipe joint) 1, and in particular, between a gas plug main body (primary joint member) 2 and a nut member (secondary joint member) 3. The present invention is applied to this. The present invention is not only applicable to the gas plug 1 but also to a gas pipe joint having a primary joint member and a secondary joint member rotatably connected to the downstream end. Applicable.
【０００６】ガス栓本体２は、ほぼストレートな筒状を
なしており、その内部には上流側（図１において右側）
の端面から下流側の端面まで貫通するガス通路２１が形
成されている。このガス通路２１の上流側の端部には、
ガス供給用のフレキシブルガス管（図示せず）を接続す
るための接続機構４が設けられている。この接続機構４
は、周知のものであるのでその説明は省略する。ガス通
路２１の上流側端部には、フレキシブルガス管用の接続
機構４に代えて、剛性を有するガス管を接続するための
機構を設けてもよい。The gas stopper main body 2 has a substantially straight cylindrical shape, and has an upstream side (the right side in FIG. 1) inside thereof.
A gas passage 21 penetrating from the end surface of the gas passage to the end surface on the downstream side is formed. At the upstream end of the gas passage 21,
A connection mechanism 4 for connecting a flexible gas pipe (not shown) for gas supply is provided. This connection mechanism 4
Is well known, and the description is omitted. A mechanism for connecting a rigid gas pipe may be provided at the upstream end of the gas passage 21 instead of the connection mechanism 4 for the flexible gas pipe.
【０００７】ガス栓本体２の長手方向の中央部には、ガ
ス通路２１を横断する弁収容孔２２が形成されている。
この弁収容孔２２には、弁体５が回動可能に収容されて
いる。この弁体５には、その外周面の一側部から他側部
まで貫通する貫通孔５１が形成されている。弁体５をハ
ンドル６によって図１に示す開位置に回動させると、ガ
ス通路２１の弁収容孔２２によって二分される上流側部
分２１ａと下流側部分２１ｂとが貫通孔５１を介して連
通する。弁体５を開位置からほぼ９０°回動させて閉位
置に位置させると、ガス通路２１の上流側部分２１ａと
下流側部分２１ｂとが弁体５によって遮断される。これ
により、ガス栓１が閉状態になる。弁収容孔２２は、テ
ーパ孔状に形成されているが球状に形成してもよい。そ
の場合には、弁収容孔２２に対応して弁体５も球状に形
成される。[0007] At the center in the longitudinal direction of the gas stopper main body 2, a valve accommodating hole 22 traversing the gas passage 21 is formed.
The valve body 5 is rotatably housed in the valve housing hole 22. The valve body 5 has a through hole 51 penetrating from one side of the outer peripheral surface to the other side. When the valve body 5 is rotated to the open position shown in FIG. 1 by the handle 6, the upstream portion 21 a and the downstream portion 21 b divided by the valve housing hole 22 of the gas passage 21 communicate with each other through the through hole 51. . When the valve element 5 is turned by approximately 90 ° from the open position to the closed position, the upstream part 21 a and the downstream part 21 b of the gas passage 21 are shut off by the valve element 5. As a result, the gas stopper 1 is closed. The valve housing hole 22 is formed in a tapered hole shape, but may be formed in a spherical shape. In that case, the valve body 5 is also formed in a spherical shape corresponding to the valve housing hole 22.
【０００８】上記ナット部材３は、筒状をなしており、
その上流側端部がガス栓本体２の下流側端部の外周面に
回動自在に、かつ気密に嵌合されている。ナット部材３
の下流側端部の内周面には、テーパ雌ねじ部３１が形成
されている。このテーパ雌ねじ部３１の内径は、下流側
の開口端から上流側へ向かうにしたがって小径になって
いるが、上流側の端部においても下流側部分２１ｂの下
流側端部の内径より大径になっている。これは、仮にテ
ーパ雌ねじ部３１を下流側部分２１ｂより小径にする
と、テーパ雌ねじ部３１に螺合されるガス管Ｇの内径
が、その肉厚の分だけ小径にしなければならないため、
下流側部分２１ｂの内径より小径になってしまい、ガス
管Ｇにおける圧力損失が過大になってしまう。このよう
な不都合を防止するために、テーパ雌ねじ部３１の内径
をその最小部分（上流側部分）においても下流側部分２
１ｂの内径より大径にしているのである。テーパ雌ねじ
部３１の上流側端部とガス栓本体２に嵌合するナット部
材３の上流側の内周面との間には、テーパ雌ねじ部３１
を容易に形成することができるようにするために、逃げ
部３２が形成されており、この逃げ部３２の内径も下流
側部分２１ｂの下流側端部の内径より大径になってい
る。The nut member 3 has a cylindrical shape.
The upstream end is rotatably and air-tightly fitted to the outer peripheral surface of the downstream end of the gas plug body 2. Nut member 3
A tapered female thread portion 31 is formed on the inner peripheral surface of the downstream end of the tapered female thread. The inner diameter of the tapered female thread portion 31 becomes smaller as it goes from the downstream open end to the upstream side. However, the inner diameter of the upstream end also becomes larger than the inner diameter of the downstream end of the downstream portion 21b. Has become. This is because if the diameter of the tapered female screw portion 31 is smaller than that of the downstream portion 21b, the inner diameter of the gas pipe G screwed to the tapered female screw portion 31 must be reduced by the thickness thereof.
The diameter becomes smaller than the inner diameter of the downstream portion 21b, and the pressure loss in the gas pipe G becomes excessive. In order to prevent such inconvenience, the inner diameter of the tapered female screw portion 31 must be reduced even at its minimum portion (upstream portion).
The diameter is larger than the inner diameter of 1b. A tapered female screw portion 31 is provided between the upstream end of the tapered female screw portion 31 and the upstream inner peripheral surface of the nut member 3 fitted to the gas stopper body 2.
In order to facilitate the formation of the relief portion 32, a relief portion 32 is formed, and the inside diameter of the relief portion 32 is larger than the inside diameter of the downstream end of the downstream portion 21b.
【０００９】下流側部分２１ｂの下流側の開口部には、
下流側端部２１ｂの内径より大径である嵌合孔部２３が
形成されている。この嵌合孔部２３には、円筒状をなす
筒体７の上流側端部が下流側部分と軸線を一致させて嵌
合固定されている。この筒体７は、内外径が全長にわた
って一定になっており、その内径は、下流側部分２１ｂ
の下流側端部（嵌合孔部２３に隣接する端部）の内径と
同等かそれより若干大径になっている。これにより、ガ
スが下流側部分２１から筒体７内に流入する際に発生す
る乱流を小さく抑え、圧力損失を少なくしている。In the downstream opening of the downstream portion 21b,
A fitting hole 23 having a diameter larger than the inner diameter of the downstream end 21b is formed. In the fitting hole 23, the upstream end of the cylindrical body 7 is fitted and fixed so that the axis thereof coincides with that of the downstream portion. The inner and outer diameters of the cylindrical body 7 are constant over the entire length.
Has a diameter equal to or slightly larger than the inner diameter of the downstream end (the end adjacent to the fitting hole 23). Thereby, the turbulence generated when the gas flows into the cylinder 7 from the downstream portion 21 is suppressed to be small, and the pressure loss is reduced.
【００１０】筒体７の下流側端部は、下流側部分２１ｂ
から突出しており、その下流側の端面７１は、ガス通路
２１の軸線方向においてガス管Ｇの上流側の端面Ｇ１と
ほぼ同一位置に位置している。端面７１は、ガス管Ｇの
端面Ｇ１に対し若干であれば上流側へ離間させてもよい
が、この実施の形態のようにほぼ同一位置に位置させる
か、ガス管Ｇ内に入り込ませるのが望ましい。The downstream end of the cylindrical body 7 is connected to a downstream portion 21b.
The downstream end face 71 is located at substantially the same position as the upstream end face G1 of the gas pipe G in the axial direction of the gas passage 21. The end face 71 may be separated from the end face G1 of the gas pipe G to the upstream side as long as it is a little, but it is preferable that the end face 71 is located at substantially the same position as in this embodiment or is inserted into the gas pipe G. desirable.
【００１１】上記構成のガス栓１においては、下流側端
部２１ｂとガス管Ｇとの間に筒体７が設けられているの
で、下流側端部２１ｂからガス管Ｇ側へ向かうガスは、
ガス管Ｇと栓本体２との間のテーパ雌ねじ部３１内に入
り込んだり、逃げ部３２内に入り込むことがほんとんど
ない。したがって、下流側端部２１ｂからガス管Ｇにガ
スが流入する際に、その流れが大きく乱されることがな
く、それによる圧力損失を小さく抑えることができる。In the gas plug 1 having the above structure, the cylinder 7 is provided between the downstream end 21b and the gas pipe G, so that the gas traveling from the downstream end 21b toward the gas pipe G is:
It hardly gets into the tapered female screw portion 31 between the gas pipe G and the plug main body 2 or gets into the escape portion 32. Therefore, when the gas flows into the gas pipe G from the downstream end 21b, the flow is not greatly disturbed, and the pressure loss due to the flow can be suppressed.
【００１２】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ついては、上記の
実施の形態と異なる構成についてのみ説明することと
し、同様な構成部分に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 configurations different from the above-described embodiments will be described, and similar components will be denoted by the same reference numerals and description thereof will be omitted.
【００１３】図２は、この発明の第２の実施の形態を示
す。この実施の形態のガス栓（ガス管用継手）１Ａにお
いては、筒体７の嵌合孔部２３から下流側に突出した下
流側部分が、下流側へ向かって拡径するテーパ部７２に
なっている。このテーパ部７２は、テーパ雌ねじ部３１
に螺合固定されたガス管Ｇの内部に入り込んでいる。し
かも、テーパ部７２の外周面の先端は、ガス管Ｇの内周
面にほぼ接触している。テーパ部７２の肉厚は、下流側
へ向かうにしたがって薄くなっており、下流側の端縁に
おいてはほぼ零になっている。したがって、テーパ部７
２の先端縁における内径は、ガス管Ｇの内径とほぼ同一
になっている。これによって、筒体７からガス管Ｇ内に
ガスが流入する際に発生する圧力損失を最小限に抑える
ようにしている。FIG. 2 shows a second embodiment of the present invention. In the gas plug (gas pipe joint) 1A of this embodiment, the downstream portion protruding downstream from the fitting hole 23 of the cylindrical body 7 becomes a tapered portion 72 whose diameter increases toward the downstream side. I have. The tapered portion 72 is formed with the tapered female screw portion 31.
Into the gas pipe G screwed and fixed. In addition, the tip of the outer peripheral surface of the tapered portion 72 is almost in contact with the inner peripheral surface of the gas pipe G. The thickness of the tapered portion 72 becomes thinner toward the downstream side, and becomes substantially zero at the downstream edge. Therefore, the tapered portion 7
The inner diameter at the leading edge of the second pipe 2 is substantially the same as the inner diameter of the gas pipe G. Thus, the pressure loss generated when gas flows into the gas pipe G from the cylinder 7 is minimized.
【００１４】図３は、この発明の第３の実施の形態を示
す。この実施の形態のガス栓（ガス管用継手）１Ｂにお
いては、ガス通路２１がほぼ直角に屈曲しており、その
上流側端部２１ａはガス栓本体２の下端面に開口してい
る。一方、ガス通路２１の下流側端部２１ｂは、ガス栓
本体２の一側部に形成された突出部２４の先端面に開口
している。突出部２４にナット部材３が設けられてい
る。その他の構成は、図１に示す実施の形態と同様であ
る。FIG. 3 shows a third embodiment of the present invention. In the gas plug (gas pipe joint) 1 </ b> B of this embodiment, the gas passage 21 is bent at a substantially right angle, and the upstream end 21 a is open to the lower end surface of the gas plug main body 2. On the other hand, a downstream end portion 21 b of the gas passage 21 is opened at a tip end surface of a protruding portion 24 formed on one side portion of the gas stopper body 2. The nut member 3 is provided on the protrusion 24. Other configurations are the same as those of the embodiment shown in FIG.
【００１５】図４は、この発明の第４の実施の形態を示
す。この実施の形態のガス栓（ガス管用継手）１Ｃにお
いては、筒体７が図２に示すものと同様に構成され、そ
の他は図３に示すものと同様に構成されている。FIG. 4 shows a fourth embodiment of the present invention. In the gas plug (gas pipe joint) 1C of this embodiment, the cylindrical body 7 is configured in the same manner as that shown in FIG. 2, and the other is configured in the same manner as that shown in FIG.
【００１６】[0016]
【発明の効果】以上説明したように、この発明によれ
ば、ガスが一次側継手部材から二次側継手部材に流入す
る際の圧力損失を小さく抑えることができるという効果
が得られる。As described above, according to the present invention, the effect that the pressure loss when the gas flows from the primary joint member to the secondary joint member can be reduced can be obtained.
【図１】この発明の第１の実施の形態を示す断面図であ
る。FIG. 1 is a cross-sectional view showing a first embodiment of the present invention.
【図２】この発明の第２の実施の形態を示す断面図であ
る。FIG. 2 is a sectional view showing a second embodiment of the present invention.
【図３】この発明の第３の実施の形態を示す断面図であ
る。FIG. 3 is a sectional view showing a third embodiment of the present invention.
【図４】この発明の第４の実施の形態を示す断面図であ
る。FIG. 4 is a sectional view showing a fourth embodiment of the present invention.
【符号の説明】 Ｇ ガス管 １ ガス栓（ガス管用継手） １Ａ ガス栓（ガス管用継手） １Ｂ ガス栓（ガス管用継手） １Ｃ ガス栓（ガス管用継手） ２ ガス栓本体（一次側継手部材） ３ ナット部材（二次側継手部材） ７ 筒体 ２１ ガス通路 ３１ テーパ雌ねじ部[Explanation of Signs] G Gas pipe 1 Gas plug (Fitting for gas pipe) 1A Gas plug (Fitting for gas pipe) 1B Gas plug (Fitting for gas pipe) 1C Gas plug (Fitting for gas pipe) 2 Gas plug body (Primary side fitting member) 3 Nut member (secondary joint member) 7 Cylindrical body 21 Gas passage 31 Tapered female thread
フロントページの続き (72)発明者 大久保 淳 東京都港区海岸一丁目５番20号 東京瓦斯 株式会社内 (72)発明者 廣松 由香 東京都港区海岸一丁目５番20号 東京瓦斯 株式会社内 (72)発明者 林 美智男 愛知県名古屋市熱田区桜田町19−18 東邦 瓦斯株式会社内 (72)発明者 斎藤 俊夫 東京都品川区豊町４−20−14 光陽産業株 式会社内 (72)発明者 保坂 三兄 新潟県上越市北本町３−１−８ 光陽産業 株式会社内 Ｆターム(参考） 3H104 JA04 JB02 JC08 JD09 KA04 KB04 LF02 LG03 LG30 Continued on the front page (72) Inventor Atsushi Okubo Tokyo Gas Co., Ltd., 1-5-20 Kaigan, Minato-ku, Tokyo (72) Inventor Yuka Hiromatsu 1-20-20 Kaigan, Minato-ku, Tokyo Tokyo Gas Co., Ltd. (72) Inventor Michio Hayashi 19-18 Sakuradacho, Atsuta-ku, Nagoya City, Aichi Prefecture Toho Gas Co., Ltd. (72) Inventor Toshio Saito 4-20-14, Toyocho, Shinagawa-ku, Tokyo Kouyo Sangyo Co., Ltd. (72) Inventor Mitsuo Hosaka 3-1-8 Kitahonmachi, Joetsu City, Niigata Prefecture F-term (reference) 3H104 JA04 JB02 JC08 JD09 KA04 KB04 LF02 LG03 LG30
Claims (5)
次側継手部材と、この一次側継手部材の下流側端部の外
周に上流側端部が回動可能に、かつ気密に嵌合された筒
状の二次側継手部材とを備え、上記二次側継手の下流側
端部の内部には、上記ガス通路の下流側端部の内径より
大径であるテーパ雌ねじ部が形成され、このテーパ雌ね
じ部にガス管が螺合固定されるガス管用継手において、
上記ガス通路の下流側の開口部に筒体の上流側端部を嵌
合し、この筒体の下流側端部を上記テーパ雌ねじ部に螺
合されたガス管の近傍又はその内部に位置させたことを
特徴とするガス管用継手。A primary joint member having a gas passage penetrating therethrough, and an upstream end rotatably and airtightly fitted to an outer periphery of a downstream end of the primary joint member. A secondary joint member having a cylindrical shape, and a tapered female thread portion having a diameter larger than the inner diameter of the downstream end portion of the gas passage is formed inside the downstream end portion of the secondary joint, In a gas pipe joint in which a gas pipe is screwed and fixed to the tapered female thread portion,
The upstream end of the tubular body is fitted into the downstream opening of the gas passage, and the downstream end of the tubular body is positioned near or inside the gas pipe screwed into the tapered female thread. Gas pipe joint characterized by the above-mentioned.
とを特徴とする請求項１に記載のガス管用継手。2. The gas pipe joint according to claim 1, wherein the cylindrical body has a constant inner diameter.
流側へ向かって大径になるテーパ部が形成されているこ
とを特徴とする請求項１に記載のガス管用継手。3. The gas pipe joint according to claim 1, wherein a tapered portion having a diameter increasing toward the downstream side is formed at least at a downstream end of the cylindrical body.
され、上記テーパ部の先端縁が上記ガス管の内周面にほ
ぼ接触させられていることを特徴とする請求項３に記載
のガス管用継手。4. The gas pipe according to claim 3, wherein the tapered portion is inserted into the gas pipe, and a leading edge of the tapered section is substantially brought into contact with an inner peripheral surface of the gas pipe. Gas pipe fittings.
口部の内径より大径である嵌合孔部が形成され、この嵌
合孔部に上記筒体が嵌合されていることを特徴とする請
求項１〜４のいずれかに記載のガス管用継手。5. A fitting hole having a diameter larger than the inner diameter of the opening is formed in the opening on the downstream side of the gas passage, and the cylindrical body is fitted in the fitting hole. The joint for a gas pipe according to any one of claims 1 to 4, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000397208A JP4509371B2 (en) | 2000-12-27 | 2000-12-27 | Gas pipe fittings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000397208A JP4509371B2 (en) | 2000-12-27 | 2000-12-27 | Gas pipe fittings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002195473A true JP2002195473A (en) | 2002-07-10 |
| JP4509371B2 JP4509371B2 (en) | 2010-07-21 |
Family
ID=18862363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000397208A Expired - Fee Related JP4509371B2 (en) | 2000-12-27 | 2000-12-27 | Gas pipe fittings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4509371B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008261436A (en) * | 2007-04-12 | 2008-10-30 | Koyo Sangyo Kk | Gas tap |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS643393A (en) * | 1987-06-25 | 1989-01-09 | Tokyo Keiki Kk | Quick disconnect coupling |
| JPH11248014A (en) * | 1998-02-27 | 1999-09-14 | Koyo Sangyo Kk | Gas cock |
| JP2002130505A (en) * | 2000-10-19 | 2002-05-09 | Tokyo Gas Co Ltd | Gas cock |
-
2000
- 2000-12-27 JP JP2000397208A patent/JP4509371B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS643393A (en) * | 1987-06-25 | 1989-01-09 | Tokyo Keiki Kk | Quick disconnect coupling |
| JPH11248014A (en) * | 1998-02-27 | 1999-09-14 | Koyo Sangyo Kk | Gas cock |
| JP2002130505A (en) * | 2000-10-19 | 2002-05-09 | Tokyo Gas Co Ltd | Gas cock |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008261436A (en) * | 2007-04-12 | 2008-10-30 | Koyo Sangyo Kk | Gas tap |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4509371B2 (en) | 2010-07-21 |
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