JP2001004042A - L type gas cock - Google Patents
L type gas cockInfo
- Publication number
- JP2001004042A JP2001004042A JP2000118312A JP2000118312A JP2001004042A JP 2001004042 A JP2001004042 A JP 2001004042A JP 2000118312 A JP2000118312 A JP 2000118312A JP 2000118312 A JP2000118312 A JP 2000118312A JP 2001004042 A JP2001004042 A JP 2001004042A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- gas
- rotation axis
- opening
- valve
- 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
- Branch Pipes, Bends, And The Like (AREA)
- Taps Or Cocks (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、互いにほぼ直交
する方向に延びるガス流入孔およびガス流出孔を有する
Ｌ型ガス栓に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an L-shaped gas stopper having a gas inlet and a gas outlet extending in directions substantially orthogonal to each other.
【０００２】[0002]
【従来の技術】一般に、Ｌ型ガス栓においては、弁体に
その内部を貫通する貫通孔が形成されており、開時には
ガス流入孔とガス流出孔とが貫通孔を介して連通するよ
うになっている。したがって、弁体の貫通孔は、互いに
直交するガス流入孔およびガス流出孔に対応してほぼ直
角に屈曲して形成されている。貫通孔が直角に屈曲して
いると、貫通孔内におけるガスの流通抵抗が増大し、圧
力損失が大きくなる。このような圧力損失を見越して、
従来のＬ型ガス栓においては、貫通孔の内径をできる限
り大きくしている。また、貫通孔を略四半分の円弧状に
湾曲させるようにしたものもある（特開平１０−３３２
０００号公報参照）。2. Description of the Related Art In general, in an L-shaped gas stopper, a through hole is formed in a valve body so as to penetrate the inside thereof, and when opened, a gas inflow hole and a gas outflow hole communicate with each other through the through hole. Has become. Therefore, the through hole of the valve element is formed to be bent substantially at a right angle corresponding to the gas inflow hole and the gas outflow hole which are orthogonal to each other. When the through hole is bent at a right angle, the gas flow resistance in the through hole increases, and the pressure loss increases. In anticipation of such a pressure loss,
In the conventional L-shaped gas stopper, the inner diameter of the through hole is made as large as possible. In addition, there is also one in which the through hole is curved into a substantially quarter arc shape (Japanese Patent Laid-Open No. 10-332).
No. 000).
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
Ｌ型ガス栓においては、ガスの圧力損失を小さく抑える
ことが困難である場合があった。例えば、最近、ガス流
出孔が開口する栓本体の端部に接続ナットを回転自在に
設け、この接続ナットをガス器具の流入部に螺合させる
ことにより、ガス栓をガス器具に直接接続するガス栓が
多用されるようになってきたが、このような器具直接接
続タイプでは、接続ナットをできる限り小径にするため
に、流出孔を必要最小限の大きさにしている。したがっ
て、Ｌ型ガス栓を器具直接接続タイプにする場合には、
貫通孔が大径に形成される一方、流出孔が必要最小限野
大きさに形成されるため、それらの間に内径差に基づく
段差が生じる。その結果、貫通孔からガス流出孔にガス
が流れる際に、大きな圧力損失が発生する。However, in the conventional L-shaped gas stopper, it was sometimes difficult to suppress the pressure loss of gas to a small value. For example, recently, a connection nut is rotatably provided at an end of a plug body in which a gas outlet hole is opened, and the connection nut is screwed into an inflow portion of the gas appliance to thereby connect a gas plug directly to the gas appliance. Although plugs have become widely used, in such a device direct connection type, an outflow hole is minimized in order to make a connection nut as small as possible. Therefore, if the L-type gas tap is to be a device direct connection type,
Since the through holes are formed with a large diameter, and the outflow holes are formed with a minimum required size, a step is generated between them due to a difference in inner diameter. As a result, a large pressure loss occurs when gas flows from the through hole to the gas outflow hole.
【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、内部に、弁収容孔と
この弁収容孔の内面にそれぞれ開口するガス流入孔およ
びガス流出孔とが形成された栓本体と、内部を貫通する
貫通孔を有し、上記栓本体の弁収容孔に回動自在に設け
られた弁体とを備え、上記ガス流入孔と上記ガス流出孔
とのうちの一方が上記弁体の回動軸線上に配置されてほ
ぼ同方向を向く上記弁収容孔の内面に開口し、他方が上
記回動軸線とほぼ直交する線上に配置されてほぼ同方向
を向く上記弁収容孔の内面に開口し、上記貫通孔の一端
部が上記弁体のほぼ回動軸線方向を向く外面に開口し
て、上記ガス流入孔と上記ガス流出孔とのうちの一方と
対向し、上記貫通孔の他端部が、上記弁体の回動位置に
応じて上記ガス流入孔と上記ガス流出孔とのうちの他方
と対向、離間するよう、上記弁体の回動軸線とほぼ直交
する方向を向く外面に開口するＬ型ガス栓において、上
記他方の上記弁収容孔の内面における開口部の上記回動
軸線方向における寸法が、上記貫通孔の他端開口部の同
方向における寸法より小さく形成され、上記他方の上記
弁収容孔の内面における開口部のうち上記回動軸線方向
において上記貫通孔の一端部から離れた側の端縁と、こ
れに対応する上記貫通孔の他端開口部の端縁とが、同方
向においてほぼ同一位置に配置され、上記他方の上記弁
収容孔の内面における開口部のうちの上記回動軸線方向
において上記貫通孔の一端部に近い側には、上記貫通孔
との間の段差を小さくするための切り欠き部が形成され
ていることを特徴としている。この場合、上記貫通孔の
他端部は、上記回動軸線と直交する方向に延びていても
よく、上記他方に対し上記弁体の回動軸線から離れるの
にしたがって上記貫通孔の一端部から離れるように傾斜
していてもよい。上記貫通孔の一端部と他端部とを結ぶ
中間部は、円弧状に湾曲していることが望ましい。上記
貫通孔の他端開口部が上記回動軸線に沿う方向に長い長
円状に形成され、上記他方の上記栓収容孔の内面におけ
る開口部がほぼ円形に形成され、その内径が上記貫通孔
の他端開口部の幅とほぼ同一に設定されていることが望
ましい。上記貫通孔の一端開口部が円形に形成され、こ
の一端開口部と他端開口部とが滑らかに連結されている
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 valve receiving hole and a gas inflow hole and a gas outflow hole which are respectively opened on the inner surface of the valve receiving hole. And a valve body having a through hole penetrating therethrough, and a valve body rotatably provided in a valve accommodating hole of the plug body, wherein the gas inflow hole and the gas outflow hole One of them is arranged on the rotation axis of the valve body and opens in the inner surface of the valve accommodating hole facing the same direction, and the other is arranged on a line substantially perpendicular to the rotation axis and substantially the same direction. One end of the through hole is opened on the outer surface of the valve body that faces substantially the rotation axis direction, and one of the gas inflow hole and the gas outflow hole is opened. And the other end of the through hole is connected to the gas inlet in accordance with the rotational position of the valve body. And an L-shaped gas stopper opening on an outer surface facing a direction substantially orthogonal to a rotation axis of the valve body so as to face and separate from the other one of the gas outlet holes, and the inner surface of the other valve housing hole. The dimension of the opening in the rotation axis direction is smaller than the dimension of the other end opening of the through hole in the same direction, and the opening in the inner surface of the other valve housing hole is the rotation axis direction. In the above, the edge on the side away from one end of the through hole and the corresponding edge of the other end opening of the through hole are arranged at substantially the same position in the same direction, and the other valve housing On the side of the opening on the inner surface of the hole closer to one end of the through hole in the rotation axis direction, a cutout portion for reducing a step between the through hole and the through hole is formed. Features. In this case, the other end of the through hole may extend in a direction orthogonal to the rotation axis, and from the one end of the through hole as the distance from the rotation axis of the valve body with respect to the other increases. It may be inclined to be separated. It is desirable that an intermediate portion connecting one end and the other end of the through hole is curved in an arc shape. The other end opening of the through hole is formed in a long oval shape in the direction along the rotation axis, and the opening on the inner surface of the other plug housing hole is formed in a substantially circular shape. Is desirably set to be substantially the same as the width of the other end opening. It is desirable that one end opening of the through hole is formed in a circular shape, and the one end opening and the other end opening are smoothly connected.
【０００５】[0005]
【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１１を参照して説明する。図１〜図９はこ
の発明の一実施の形態を示すものであり、この実施の形
態のＬ型ガス栓１は、図１および図２に示すように、栓
本体２と弁体３とを備えている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. FIGS. 1 to 9 show an embodiment of the present invention. An L-type gas stopper 1 according to this embodiment comprises a plug main body 2 and a valve body 3 as shown in FIGS. Have.
【０００６】図１〜図６に示すように、栓本体２の内部
には、軸線を上下方向に向けたテーパ孔状の弁収容孔２
１が形成されている。この弁収容孔２１は、球形または
円筒形に形成してもよい。As shown in FIGS. 1 to 6, a valve housing hole 2 having a tapered hole shape with its axis directed vertically is provided inside a plug body 2.
1 is formed. This valve accommodation hole 21 may be formed in a spherical or cylindrical shape.
【０００７】また、栓本体２の内部には、ガス流入孔２
２およびガス流出孔２３が形成されている。ガス流入孔
２２は、断面円形状をなしており、その軸線を弁収容孔
２１の軸線（弁体３の回動軸線）Ｌと一致させて配置さ
れている。ガス流入孔２２の内側の端部２２ａは、弁収
容孔２１の小径側の端面（回動軸線Ｌ方向を向く内面）
に開口し、外側の端部２２ｂ、は栓本体２の外面に開口
している。内側の端部２２ａの内径は、ガスの流通抵抗
を所定の大きさ以下にするのに必要とされる内径より大
径になっている。ガス流入孔２２の外側の端部２２ｂに
は、周知のガス管接続機構４が設けられている。このガ
ス管接続機構４によってガス流入孔２２にフレキシブル
ガス管（図示せず）が接続され、フレキシブルガス管か
らガスが供給されるようになっている。[0007] The gas inlet hole 2 is provided inside the plug body 2.
2 and gas outflow holes 23 are formed. The gas inflow hole 22 has a circular cross section, and is arranged so that its axis coincides with the axis L of the valve housing hole 21 (the rotation axis of the valve element 3). The inner end 22a of the gas inflow hole 22 is an end surface on the small diameter side of the valve accommodating hole 21 (an inner surface facing the direction of the rotation axis L).
And the outer end 22 b is open to the outer surface of the plug body 2. The inner diameter of the inner end 22a is larger than the inner diameter required to reduce the gas flow resistance to a predetermined value or less. A well-known gas pipe connection mechanism 4 is provided at an outer end 22 b of the gas inflow hole 22. A flexible gas pipe (not shown) is connected to the gas inflow hole 22 by the gas pipe connection mechanism 4, and gas is supplied from the flexible gas pipe.
【０００８】ガス流出孔２３は、断面円形状をなしてお
り、その軸線を軸線Ｌとほぼ直交させて配置されてい
る。ガス流出孔２３の内側の端部２３ａは弁収容孔２１
の内周面（回動軸線Ｌとほぼ直交する方向を向く内面）
に開口し、外側の端部２３ｂは、栓本体２の外周面に軸
線Ｌと直交する方向に突出して形成された突出部２４の
先端面に開口している。突出部２４には、接続ナット５
が回転自在に設けられており、この接続ナット５をガス
器具（図示せず）に螺合させることにより、ガス栓１が
ガス器具に直接接続されるようになっている。接続ナッ
ト５が大径化するのを防止するために、流出孔２３の内
径は、ガスの流通抵抗を勘案した上でできる限り小さく
設定されており、ガス流入孔２２より小径になってい
る。The gas outlet 23 has a circular cross section, and is arranged so that its axis is substantially orthogonal to the axis L. The inner end 23a of the gas outlet hole 23 is
Inner peripheral surface (the inner surface facing in a direction substantially perpendicular to the rotation axis L)
The outer end 23b is opened at the distal end surface of a protruding portion 24 formed on the outer peripheral surface of the plug body 2 so as to protrude in a direction orthogonal to the axis L. The projection 24 has a connection nut 5
Is rotatably provided, and by screwing the connection nut 5 to a gas appliance (not shown), the gas plug 1 is directly connected to the gas appliance. In order to prevent the connection nut 5 from increasing in diameter, the inner diameter of the outflow hole 23 is set as small as possible in consideration of the gas flow resistance, and is smaller than the gas inflow hole 22.
【０００９】図５および図６に示すように、栓本体２の
外周面には、突起２５が形成されている。この突起２５
は、突出部２４に対し、軸線Ｌ方向には同一位置に、栓
本体２の周方向にはほぼ９０°離れて配置されている。
突起２５には、その先端面から弁収容孔２１の内周面ま
で延びる検査孔２６が形成されている。なお、検査孔２
６は、検査時以外、つまりガス栓１の通常の使用時に
は、その外側の開口部に螺合された止めねじ（図示せ
ず）によって開閉可能に閉じられている。As shown in FIGS. 5 and 6, a projection 25 is formed on the outer peripheral surface of the plug body 2. This projection 25
Are arranged at the same position in the direction of the axis L with respect to the protruding portion 24, and are substantially 90 ° apart in the circumferential direction of the plug body 2.
The projection 25 has an inspection hole 26 extending from the distal end surface to the inner peripheral surface of the valve housing hole 21. In addition, inspection hole 2
Numeral 6 is closed so as to be opened and closed by a set screw (not shown) screwed into an opening on the outside thereof except during inspection, that is, during normal use of the gas stopper 1.
【００１０】図１、図２および図７〜図９に示すよう
に、上記弁体３は、弁収容孔２１に回動自在に挿入され
ている。弁体３は、弁収容孔２１に対応してテーパ状に
形成されているが、弁収容孔２１が他の形状である場合
には、それに対応して球形または円筒形に形成される。
弁体３には、その内部を貫通する貫通孔３１が形成され
ている。As shown in FIGS. 1 and 2 and FIGS. 7 to 9, the valve body 3 is rotatably inserted into a valve receiving hole 21. The valve body 3 is formed in a tapered shape corresponding to the valve housing hole 21, but when the valve housing hole 21 has another shape, the valve body 3 is formed in a spherical shape or a cylindrical shape corresponding thereto.
The valve body 3 has a through hole 31 penetrating therethrough.
【００１１】貫通孔３１は、ガス流入孔２２とガス流出
孔２３とを連通させるためのものであり、略四半分の円
弧状に湾曲して形成されている。貫通孔３１の一端部３
１ａは、弁体３の小径側の端面（ほぼ回動軸線Ｌ方向を
向く外面）に開口し、他端部３１bは弁体３の外周面
（回動軸線Ｌとほぼ直交する方向を向く外面）に開口し
ている。The through hole 31 is for communicating the gas inflow hole 22 and the gas outflow hole 23, and is formed to be curved in a substantially quarter arc shape. One end 3 of through hole 31
1a is opened on the end surface on the small diameter side of the valve body 3 (the outer surface facing the direction of the rotation axis L), and the other end 31b is the outer surface of the valve body 3 (the outer surface facing the direction substantially perpendicular to the rotation axis L). ).
【００１２】貫通孔３１の一端部３１ａは、円形に形成
されており、その内径はガス流入孔２２の内側の端部２
２ａの内径と同径になっている。また、一端部３１ａ
は、その軸線を軸線Ｌと一致させて配置されている。し
たがって、貫通孔３１は、ガス流入孔２２と常時対向し
て連通している。One end 31a of the through hole 31 is formed in a circular shape, and the inside diameter thereof is the inner end 2 of the gas inflow hole 22.
It has the same diameter as the inner diameter of 2a. Also, one end 31a
Are arranged so that their axes coincide with the axis L. Therefore, the through hole 31 is always opposed to and communicates with the gas inflow hole 22.
【００１３】貫通孔３１の他端部３１ｂは、軸線Ｌ方向
に長い長円状に形成されている。他端部３１ｂの軸線Ｌ
方向における長さは、ガス流入孔２２の一端部２２ａの
内径より長くなっている。その一方、他端部３１ｂの幅
は、一端部２２ａの内径より狭くなっている。この実施
の形態では、ガス流出孔２３の内径とほぼ同一になって
いる。他端部３１ｂの長さおよび幅をこのように設定す
ることにより、他端部３１ｂと一端部３１ａとの断面積
がほぼ等しく設定されている。また、一端部３１ａの内
面と他端部３１ｂの内面とは、互いの間に段差等が生じ
ないよう滑らかに連結されており、一端部３１ａと他端
部３１ｂとの間の貫通孔３１の各部分の断面積は、両端
部３１ａ，３１ｂの断面積とほぼ等しくなっている。そ
して、貫通孔３１を円弧状に湾曲させたことと、貫通孔
３１の各部の断面積を一端部３１ａの断面積と同一にし
て通常必要とされる断面積より大きくしたこととによ
り、貫通孔３１内における流通抵抗を所定の大きさ以下
にしている。The other end 31b of the through hole 31 is formed in a long oval shape in the direction of the axis L. Axis L of the other end 31b
The length in the direction is longer than the inner diameter of one end 22 a of the gas inflow hole 22. On the other hand, the width of the other end 31b is smaller than the inner diameter of the one end 22a. In this embodiment, the diameter is substantially the same as the inner diameter of the gas outlet hole 23. By setting the length and width of the other end 31b in this way, the cross-sectional areas of the other end 31b and the one end 31a are set to be substantially equal. Further, the inner surface of the one end 31a and the inner surface of the other end 31b are smoothly connected to each other so that a step or the like does not occur between the inner surfaces of the through holes 31 between the one end 31a and the other end 31b. The cross-sectional area of each part is substantially equal to the cross-sectional area of both ends 31a and 31b. The through-hole 31 is curved in an arc shape, and the cross-sectional area of each part of the through-hole 31 is made equal to the cross-sectional area of the one end portion 31a to be larger than a normally required cross-sectional area. The flow resistance within 31 is set to a predetermined value or less.
【００１４】貫通孔３１の他端部３１ｂは、弁体３をハ
ンドル６によって回動操作して所定の開位置に回動させ
ると、ガス流出孔２３の端部２３ａと対向する。これに
より、ガス流入孔２２とガス流出孔２３とが貫通孔３１
を介して連通し、ガス器具にガスが供給される。The other end 31b of the through hole 31 is opposed to the end 23a of the gas outlet hole 23 when the valve body 3 is turned by the handle 6 and turned to a predetermined open position. As a result, the gas inflow hole 22 and the gas outflow hole 23 are separated from the through hole 31.
And gas is supplied to the gas appliance.
【００１５】弁体３を開位置から所定の閉位置までほぼ
９０°回動させると、貫通孔３１の他端部３１ｂがガス
流出孔２３の端部２３ａに対して弁収容孔２１の周方向
に離間する。この結果、ガス流入孔２２とガス流出孔２
３との間が弁体３によって遮断され、ガス器具に対する
ガスの供給が停止する。このとき、貫通孔３１の他端部
３１ｂが長円形をなしているので、円形にした場合に比
して、他端部３１ｂとガス流出孔２３の端部２３ａとの
間の弁体３の周方向における間隔を広くすることができ
る。したがって、貫通孔３１とガス流出孔２３との間の
ガスの流通を確実に遮断することができる。これが、貫
通孔３１の他端部３１ｂを軸線Ｌ方向に長い長孔にした
理由である。When the valve body 3 is turned by approximately 90 ° from the open position to a predetermined closed position, the other end 31b of the through hole 31 is moved in the circumferential direction of the valve accommodating hole 21 with respect to the end 23a of the gas outlet hole 23. Separate from As a result, the gas inflow holes 22 and the gas outflow holes 2
3 is shut off by the valve body 3, and the supply of gas to the gas appliance is stopped. At this time, since the other end portion 31b of the through hole 31 has an oval shape, the valve body 3 between the other end portion 31b and the end portion 23a of the gas outlet hole 23 has an oval shape as compared with the case where the through hole 31 has a circular shape. The interval in the circumferential direction can be increased. Therefore, the flow of gas between the through hole 31 and the gas outlet hole 23 can be reliably blocked. This is the reason why the other end 31b of the through-hole 31 is formed as a long hole in the direction of the axis L.
【００１６】弁体３の外周面には、周方向に延びる溝３
２が形成されている。この溝３２は、弁体３を開位置か
ら閉位置側へ回動させたとき、貫通孔３１がガス流出孔
２３から周方向へ離間する直前の位置から閉位置までの
範囲で、ガス流出孔２３と検査孔２６とを連通させるよ
うに配置されている。したがって、貫通孔３１がガス流
出孔２３から離間する直前の位置に弁体３を回動させる
と、検査孔２６が、溝３２および貫通孔３１を介してガ
ス流入孔２２に連通するとともに、溝３２を介してガス
流出孔２３に連通する。これにより、ガス圧検査および
元栓（図示せず）からガス器具までの間にガス漏れが有
るか否かの検査を行うことができる。また、弁体３を閉
位置に回動させると、検査孔２６が溝３２を介してガス
流出孔２３と連通し、ガス流入孔２２に対して遮断され
る。これにより、ガス栓１からガス器具までの間にガス
漏れがあるか否かを検査することができる。A groove 3 extending in the circumferential direction is formed on the outer peripheral surface of the valve body 3.
2 are formed. When the valve body 3 is rotated from the open position to the closed position, the groove 32 is formed in a range from the position immediately before the through hole 31 is separated from the gas outflow hole 23 in the circumferential direction to the closed position. 23 and the inspection hole 26 are arranged so as to communicate with each other. Therefore, when the valve 3 is rotated to a position immediately before the through hole 31 is separated from the gas outflow hole 23, the inspection hole 26 communicates with the gas inflow hole 22 via the groove 32 and the through hole 31, and It communicates with the gas outlet hole 23 through 32. Thereby, it is possible to perform a gas pressure test and a test to determine whether or not there is a gas leak between the main plug (not shown) and the gas appliance. When the valve body 3 is turned to the closed position, the inspection hole 26 communicates with the gas outflow hole 23 through the groove 32 and is shut off from the gas inflow hole 22. Thereby, it can be inspected whether there is gas leakage between the gas stopper 1 and the gas appliance.
【００１７】図１に示すように、端部２３ａの弁収容孔
２１の内周面における開口部の上端縁（他方の弁収容孔
２１の内面における開口部のうちの回動軸線Ｌ方向にお
いて貫通孔３１の一端部３１ａから離れた側の端縁）
と、これに対応する貫通孔３１の他端部３１ｂの開口部
の上端縁とは、軸線Ｌ方向においてほぼ同一位置に配置
されている。この結果、端部２３ａの開口部の下端縁
が、貫通孔３１の端部３１ｂの開口部の下端縁とよりそ
れらの軸線Ｌ方向における長さの差の分だけ上方に位置
し、それらの間に段差が形成される。この段差をそのま
ま放置すると、貫通孔３１とガス流出孔２３との間に大
きな流通抵抗が発生する。このような不具合を未然に防
止するために、次の構成が採用されている。As shown in FIG. 1, the upper end edge of the opening in the inner peripheral surface of the valve accommodating hole 21 of the end portion 23a (through the opening in the inner surface of the other valve accommodating hole 21 in the direction of the rotation axis L). Edge of hole 31 away from one end 31a)
And the corresponding upper end edge of the opening of the other end portion 31b of the through hole 31 are disposed at substantially the same position in the axis L direction. As a result, the lower edge of the opening of the end portion 23a is positioned higher than the lower edge of the opening of the end portion 31b of the through hole 31 by an amount corresponding to the difference in their lengths in the direction of the axis L. , A step is formed. If this step is left as it is, a large flow resistance occurs between the through hole 31 and the gas outlet hole 23. In order to prevent such a problem beforehand, the following configuration is adopted.
【００１８】すなわち、図１、図２および図４〜図６に
示すように、ガス流出孔２３の端部２３ａの内周面の下
側には、弁収容孔２１の内周面から外側に向って切り欠
き部２７，２８が順次形成している。That is, as shown in FIGS. 1 and 2 and FIGS. 4 to 6, the inner peripheral surface of the end portion 23 a of the gas outlet hole 23 is located below the inner peripheral surface of the valve housing hole 21. Notch portions 27 and 28 are sequentially formed.
【００１９】切り欠き部２７は、断面円弧状をなし、ガ
ス流出孔２３と平行に延びている。つまり、切り欠き部
２７は、ガス流出孔２３と平行に延びる円弧面によって
形成されている。この円弧面の曲率半径は、ガス流出孔
２３の半径より若干大径になっている。切り欠き部２７
の弁収容孔２１の内周面における下端縁は、貫通孔３１
の他端部３１ｂの開口部の下端縁と一致している。この
結果、弁収容孔２１の内周面における端部２３ａの開口
部は、その幅が貫通孔３１の他端部３１ｂの開口部の幅
より若干広くなる点を除き、他端部３１ｂの開口部の形
状とほぼ同一になっている。これにより、貫通孔３１の
他端部３１ｂとガス流出孔２３の内側の端部２３ａとの
各下端縁間に段差が形成されるのを防止している。切り
欠き部２７の曲率半径は、ガス流出孔２３の半径と同一
にしてもよい。そのようにすれば、切り欠き部２７が形
成された個所における端部２３ａの形状を、貫通孔３１
の他端部３１ａの形状とほとんど同一にすることができ
る。The notch 27 has an arcuate cross section and extends in parallel with the gas outlet hole 23. That is, the notch 27 is formed by an arc surface extending in parallel with the gas outflow hole 23. The radius of curvature of this arc surface is slightly larger than the radius of the gas outlet hole 23. Notch 27
The lower edge of the inner peripheral surface of the valve housing hole 21 is formed with a through hole 31.
And the lower end edge of the opening of the other end 31b. As a result, the opening at the end 23a on the inner peripheral surface of the valve housing hole 21 is slightly wider than the opening at the other end 31b of the through hole 31 except for the opening at the other end 31b. It has almost the same shape as the part. This prevents a step from being formed between the lower end edges of the other end 31b of the through hole 31 and the inner end 23a of the gas outlet hole 23. The radius of curvature of the notch 27 may be the same as the radius of the gas outlet hole 23. By doing so, the shape of the end 23a at the place where the notch 27 is formed is changed to the shape of the through hole 31.
Can be made almost the same as the shape of the other end 31a.
【００２０】切り欠き部２８は、切り欠き部２７から外
側に向って滑らかに連続して延びており、切り欠き部２
７とほぼ同一の曲率半径を有する円弧面によって形成さ
れている。ただし、切り欠き部２８は、切り欠き部２７
がガス流出孔２３と平行に配置されているのに対し、外
側に向かうにしたがって上方へ向うように傾斜してい
る。このような切り欠き部２８を切り欠き部２７とこれ
に外側に続くガス流出孔２３の内周面との間に形成する
ことにより、それらを段差が生じることなく滑らかに連
続させている。切り欠き部２８は、弁収容孔２１の内周
面まで延ばしてもよい。勿論、その場合には、切り欠き
部２７が形成されることはない。The notch 28 smoothly and continuously extends outward from the notch 27, and the notch 2
7 is formed by an arc surface having a radius of curvature that is substantially the same as that of FIG. However, the notch 28 is notch 27
Are arranged in parallel with the gas outflow holes 23, but are inclined so as to rise upward toward the outside. By forming such a cutout portion 28 between the cutout portion 27 and the inner peripheral surface of the gas outlet hole 23 that follows the cutout portion 27, they are smoothly continued without any step. The notch 28 may extend to the inner peripheral surface of the valve receiving hole 21. Of course, in this case, the notch 27 is not formed.
【００２１】なお、貫通孔３１の端部３１ｂ内を流れる
ガスの流量は、上端側で多く、下端側で少ない。そこ
で、端部２３ａ、３１ｂの上端縁どうしを軸線Ｌ方向に
おいてほぼ同一位置に位置させることにより、ガス流量
の多い上端縁側の流通抵抗をほとんど無くすようにした
ものである。The flow rate of the gas flowing through the end 31b of the through hole 31 is large at the upper end and smaller at the lower end. In view of this, the upper ends of the ends 23a and 31b are located at substantially the same position in the direction of the axis L, so that the flow resistance on the upper end side where the gas flow rate is large is almost eliminated.
【００２２】上記構成のＬ型ガス栓１においては、ガス
流出孔２３を貫通孔３１より小さくしているので、それ
に対応して突出部２４の外径を小さくすることができ、
これによって接続ナット５の外径を小さくすることがで
きる。しかも、ガス流出孔２３の内側の端部２３ａに切
り欠き部２７，２８を形成し、弁収容孔の内周面におけ
る端部２３ａの開口部と、弁体３の外周面における貫通
孔３１の他端部３１ｂ開口部と各下端縁間に段差が形成
されるのを防止している。したがって、ガスの流通抵抗
およびそれに基づく圧力損失を小さくすることができ
る。In the L-shaped gas stopper 1 having the above-described structure, since the gas outlet hole 23 is smaller than the through hole 31, the outer diameter of the protrusion 24 can be reduced correspondingly.
Thereby, the outer diameter of the connection nut 5 can be reduced. Moreover, notches 27 and 28 are formed in the inner end 23a of the gas outlet hole 23, and the opening of the end 23a in the inner peripheral surface of the valve housing hole and the through hole 31 in the outer peripheral surface of the valve body 3 are formed. A step is prevented from being formed between the opening of the other end 31b and each lower edge. Therefore, the gas flow resistance and the pressure loss based thereon can be reduced.
【００２３】図１０および図１１は、この発明の他の実
施の形態を示すものである。この実施の形態のＬ型ガス
栓１′においては、貫通孔３１の他端部３１ｂが軸線Ｌ
から離れるのにしたがって上方（貫通孔３１の一端部３
１ａから離れる方向）へ向うように傾斜している。ま
た、切り欠き部１７が形成されておらず、切り欠き部１
８が弁収容孔２１の内周面まで延びている。また、切り
欠き部１８の曲率半径は、ガス流出孔２３の半径より若
干小さくなっている。これは、図１０において想像線で
示すように、切り欠き部２８を形成するためのエンドミ
ル、ドリル等の切削工具Ｔを、切り欠き部２８と同一角
度だけ傾斜させた状態でガス流出孔２３に挿入すること
ができるようにするためものである。FIGS. 10 and 11 show another embodiment of the present invention. In the L-type gas stopper 1 ′ of this embodiment, the other end 31 b of the through hole 31 is
(The one end 3 of the through hole 31)
1a). Further, the notch 17 is not formed, and the notch 1
8 extends to the inner peripheral surface of the valve housing hole 21. The radius of curvature of the notch 18 is slightly smaller than the radius of the gas outlet hole 23. This is because the cutting tool T such as an end mill or a drill for forming the notch 28 is formed in the gas outlet hole 23 while being inclined by the same angle as the notch 28, as shown by the imaginary line in FIG. It is intended to be able to be inserted.
【００２４】また、このＬ型ガス栓１′では、ガス流入
孔２２の内側の端部２２ａの下流側近傍に、端部２２ａ
に接近するのにしたがって大径になるテーパ孔部２２ｃ
が形成されている。これにより、ガス流入孔２２の小径
である下流側から大径である端部２２ａ側へ向ってガス
が円滑に流れるようにしている。その他の構成は、上記
Ｌ型ガス栓１と同様になっている。In the L-shaped gas stopper 1 ′, the end 22 a is located near the downstream end of the inner end 22 a of the gas inflow hole 22.
Tapered hole portion 22c whose diameter increases as it approaches
Are formed. This allows the gas to flow smoothly from the downstream side, which is the small diameter of the gas inlet hole 22, to the end 22a side, which is the large diameter. Other configurations are the same as those of the above-described L-type gas stopper 1.
【００２５】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けるガス流入孔２２とガス流出孔２
３とを逆にしてもよい。つまり、ガス流入孔２２をガス
流出孔として用い、ガス流出孔２３をガス流入孔として
用いてもよい。It should be noted that the present invention is not limited to the above-described embodiment, and can be appropriately changed. For example, the gas inflow holes 22 and the gas outflow holes 2
3 may be reversed. That is, the gas inflow holes 22 may be used as gas outflow holes, and the gas outflow holes 23 may be used as gas inflow holes.
【００２６】[0026]
【発明の効果】以上説明したように、この発明によれ
ば、ガス流入孔またはガス流出孔を必要最小限に小さく
することができ、しかも小さくされたガス流入孔または
ガス流出孔と弁体の貫通孔との間の流通抵抗を小さく
し、それによってガスの圧力損失を小さくすることがで
きるという効果が得られる。As described above, according to the present invention, the gas inflow hole or gas outflow hole can be made as small as necessary. This has the effect of reducing the flow resistance between the through-hole and the pressure loss of the gas.
【図１】この発明に係るＬ型ガス栓を開状態で示す縦断
面図である。FIG. 1 is a longitudinal sectional view showing an L-shaped gas stopper according to the present invention in an open state.
【図２】同ガス栓を閉状態で示す縦断面図である。FIG. 2 is a longitudinal sectional view showing the gas stopper in a closed state.
【図３】同ガス栓の栓本体を示す正面図である。FIG. 3 is a front view showing a plug main body of the gas plug.
【図４】図３のＸ−Ｘ断面図である。FIG. 4 is a sectional view taken along line XX of FIG. 3;
【図５】図３のＹ−Ｙ断面図である。FIG. 5 is a sectional view taken along line YY of FIG. 3;
【図６】図５のＸ−Ｘ断面図である。FIG. 6 is a sectional view taken along line XX of FIG. 5;
【図７】同ガス栓の弁体を示す正面図である。FIG. 7 is a front view showing a valve body of the gas stopper.
【図８】図７のＸ−Ｘ断面図である。FIG. 8 is a sectional view taken along line XX of FIG. 7;
【図９】図７のＹ−Ｙ断面図である。FIG. 9 is a sectional view taken along the line YY of FIG. 7;
【図１０】この発明の他の実施の形態を開状態で示す縦
断面図である。FIG. 10 is a longitudinal sectional view showing another embodiment of the present invention in an open state.
【図１１】栓収容孔の内周面におけるガス流出孔の開口
部と弁体の外周面における貫通孔の開口部との関係を開
状態で示す図である。FIG. 11 is a view showing an open state of the relationship between the opening of the gas outflow hole on the inner peripheral surface of the plug housing hole and the opening of the through hole on the outer peripheral surface of the valve element.
Ｌ 軸線（弁体の回動軸線） １ Ｌ型ガス栓 １′ Ｌ型ガス栓 ２ 栓本体 ３ 弁体 ２１ 栓収容孔 ２２ ガス流入孔 ２２ａ ガス流入孔の内側の端部 ２３ ガス流出孔 ２３ａ ガス流出孔の内側の端部 ２７ 切り欠き部 ２８ 切り欠き部 ３１ 貫通孔 ３１ａ 貫通孔の一端部 ３１ｂ 貫通孔の他端部 L axis (rotation axis of valve body) 1 L-shaped gas plug 1 'L-shaped gas plug 2 plug body 3 valve body 21 plug accommodation hole 22 gas inflow hole 22a inner end of gas inflow hole 23 gas outflow hole 23a gas Inside end of outflow hole 27 Notch 28 Notch 31 Through hole 31a One end of through hole 31b The other end of through hole
Claims (6)
にそれぞれ開口するガス流入孔およびガス流出孔とが形
成された栓本体と、内部を貫通する貫通孔を有し、上記
栓本体の弁収容孔に回動自在に設けられた弁体とを備
え、上記ガス流入孔と上記ガス流出孔とのうちの一方が
上記弁体の回動軸線上に配置されてほぼ同方向を向く上
記弁収容孔の内面に開口し、他方が上記回動軸線とほぼ
直交する線上に配置されてほぼ同方向を向く上記弁収容
孔の内面に開口し、上記貫通孔の一端部が上記弁体のほ
ぼ回動軸線方向を向く外面に開口して、上記ガス流入孔
と上記ガス流出孔とのうちの一方と対向し、上記貫通孔
の他端部が、上記弁体の回動位置に応じて上記ガス流入
孔と上記ガス流出孔とのうちの他方と対向、離間するよ
う、上記弁体の回動軸線とほぼ直交する方向を向く外面
に開口するＬ型ガス栓において、 上記他方の上記弁収容孔の内面における開口部の上記回
動軸線方向における寸法が、上記貫通孔の他端開口部の
同方向における寸法より小さく形成され、上記他方の上
記弁収容孔の内面における開口部のうち上記回動軸線方
向において上記貫通孔の一端部から離れた側の端縁と、
これに対応する上記貫通孔の他端開口部の端縁とが、同
方向においてほぼ同一位置に配置され、上記他方の上記
弁収容孔の内面における開口部のうちの上記回動軸線方
向において上記貫通孔の一端部に近い側には、上記貫通
孔との間の段差を小さくするための切り欠き部が形成さ
れていることを特徴とするＬ型ガス栓。A plug body having a valve receiving hole, a gas inflow hole and a gas outflow hole respectively opened on the inner surface of the valve receiving hole, and a through hole penetrating the inside; A valve body rotatably provided in a valve housing hole of the main body, and one of the gas inflow hole and the gas outflow hole is arranged on a rotation axis of the valve body and substantially the same direction. The other side is opened on the inner surface of the valve receiving hole, the other is disposed on a line substantially perpendicular to the rotation axis, and opens on the inner surface of the valve receiving hole facing substantially the same direction. An opening is provided on the outer surface of the body that is substantially oriented in the direction of the rotation axis, and is opposed to one of the gas inflow hole and the gas outflow hole, and the other end of the through hole is at a rotation position of the valve body. The rotation axis of the valve body is opposed to or separated from the other of the gas inflow hole and the gas outflow hole accordingly. In the L-shaped gas stopper which opens on the outer surface facing in a direction substantially perpendicular to the line, the dimension in the rotation axis direction of the opening on the inner surface of the other valve housing hole is the same as that of the other end opening of the through hole. An edge on the side away from one end of the through-hole in the rotation axis direction among the openings on the inner surface of the other valve housing hole,
The corresponding edge of the other end opening of the through hole is disposed at substantially the same position in the same direction, and the other end of the opening in the inner surface of the valve housing hole has the same shape in the rotation axis direction. An L-shaped gas stopper characterized in that a notch for reducing a step between the through hole and the one end is formed on a side near one end of the through hole.
交する方向に延びていることを特徴とする請求項１に記
載のＬ型ガス栓。2. The L-shaped gas stopper according to claim 1, wherein the other end of the through hole extends in a direction orthogonal to the rotation axis.
上記弁体の回動軸線から離れるのにしたがって上記貫通
孔の一端部から離れるように傾斜していることを特徴と
する請求項１に記載のＬ型ガス栓。3. The valve according to claim 2, wherein the other end of the through hole is inclined with respect to the other end so as to be away from the one end of the through hole as the distance from the rotation axis of the valve body increases. Item 1. An L-shaped gas stopper according to Item 1.
間部が円弧状に湾曲していることを特徴とする請求項１
〜３のいずれかに記載のＬ型ガス栓。4. An intermediate portion connecting one end and the other end of the through hole is curved in an arc shape.
4. The L-shaped gas stopper according to any one of claims 1 to 3.
に沿う方向に長い長円状に形成され、上記他方の上記栓
収容孔の内面における開口部が円形状に形成され、その
内径が上記貫通孔の他端開口部の幅とほぼ同一に設定さ
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Ｌ型ガス栓。5. The other end opening of the through hole is formed in an elongated oval shape in a direction along the rotation axis, and the opening in the inner surface of the other plug housing hole is formed in a circular shape. The L-shaped gas stopper according to any one of claims 1 to 4, wherein the inner diameter is set to be substantially the same as the width of the other end opening of the through hole.
れ、この一端開口部と他端開口部とが滑らかに連結され
ていることを特徴とする請求項５に記載のＬ型ガス栓。6. The L-shaped gas stopper according to claim 5, wherein one end opening of the through hole is formed in a circular shape, and the one end opening and the other end opening are connected smoothly. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000118312A JP4545274B2 (en) | 1999-04-19 | 2000-04-19 | L type gas stopper |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11-110551 | 1999-04-19 | ||
| JP11055199 | 1999-04-19 | ||
| JP2000118312A JP4545274B2 (en) | 1999-04-19 | 2000-04-19 | L type gas stopper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001004042A true JP2001004042A (en) | 2001-01-09 |
| JP4545274B2 JP4545274B2 (en) | 2010-09-15 |
Family
ID=26450160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000118312A Expired - Lifetime JP4545274B2 (en) | 1999-04-19 | 2000-04-19 | L type gas stopper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4545274B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003097740A (en) * | 2001-09-25 | 2003-04-03 | Koyo Sangyo Kk | L-type gas cock |
| JP2009019677A (en) * | 2007-07-11 | 2009-01-29 | Toho Gas Co Ltd | L-shaped gas valve |
| JP2011237016A (en) * | 2010-05-13 | 2011-11-24 | Koyo Sangyo Ltd | Gas cock |
| JP2015094466A (en) * | 2013-11-14 | 2015-05-18 | 東京瓦斯株式会社 | Gas plug |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5424730U (en) * | 1977-07-21 | 1979-02-17 | ||
| JPS58146165U (en) * | 1982-03-26 | 1983-10-01 | 大阪瓦斯株式会社 | angle valve |
| JPS59118855U (en) * | 1983-01-31 | 1984-08-10 | 株式会社デンソー | flow regulating valve |
| JPS62140275U (en) * | 1986-02-28 | 1987-09-04 | ||
| JPH0158793B2 (en) * | 1982-03-26 | 1989-12-13 | Oosaka Gasu Kk | |
| JPH06109192A (en) * | 1992-05-14 | 1994-04-19 | Kiyoyuki Horii | Coanda bend pipe |
| JPH0673553U (en) * | 1993-03-31 | 1994-10-18 | 光陽産業株式会社 | Gas tap |
-
2000
- 2000-04-19 JP JP2000118312A patent/JP4545274B2/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5424730U (en) * | 1977-07-21 | 1979-02-17 | ||
| JPS58146165U (en) * | 1982-03-26 | 1983-10-01 | 大阪瓦斯株式会社 | angle valve |
| JPH0158793B2 (en) * | 1982-03-26 | 1989-12-13 | Oosaka Gasu Kk | |
| JPS59118855U (en) * | 1983-01-31 | 1984-08-10 | 株式会社デンソー | flow regulating valve |
| JPS62140275U (en) * | 1986-02-28 | 1987-09-04 | ||
| JPH06109192A (en) * | 1992-05-14 | 1994-04-19 | Kiyoyuki Horii | Coanda bend pipe |
| JPH0673553U (en) * | 1993-03-31 | 1994-10-18 | 光陽産業株式会社 | Gas tap |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003097740A (en) * | 2001-09-25 | 2003-04-03 | Koyo Sangyo Kk | L-type gas cock |
| JP2009019677A (en) * | 2007-07-11 | 2009-01-29 | Toho Gas Co Ltd | L-shaped gas valve |
| JP2011237016A (en) * | 2010-05-13 | 2011-11-24 | Koyo Sangyo Ltd | Gas cock |
| JP2015094466A (en) * | 2013-11-14 | 2015-05-18 | 東京瓦斯株式会社 | Gas plug |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4545274B2 (en) | 2010-09-15 |
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