JP2009002483A - Pipe fitting with valve, and valve supporter for the same - Google Patents

Pipe fitting with valve, and valve supporter for the same Download PDF

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JP2009002483A
JP2009002483A JP2007166322A JP2007166322A JP2009002483A JP 2009002483 A JP2009002483 A JP 2009002483A JP 2007166322 A JP2007166322 A JP 2007166322A JP 2007166322 A JP2007166322 A JP 2007166322A JP 2009002483 A JP2009002483 A JP 2009002483A
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shaft
peripheral surface
valve
inner peripheral
head
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Kuniaki Nakabayashi
邦明 中林
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Bridgestone Flowtech Corp
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Bridgestone Flowtech Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipe fitting with a valve reduced in pressure loss, having sufficient strength, and reduced in manufacturing cost. <P>SOLUTION: A valve 30 having a head part 31 and a shaft part 32, a valve supporter A fixed to cylindrical bodies 11 and 21 and supporting the shaft part 32 freely to move in the axial direction, and an energizing member 8 for energizing the head part 31 are provided in flow paths L1 and L2 of the cylindrical bodies 11 and 21. In the state of removing fitting, the head part 31 is energized and abuts on contracted diameter parts 12 and 22 so as to close the flow paths L1 and L2, and in the state of fitting, both the head parts 31 are separated from the contracted diameter parts 12 and 22 by pushing of both the head parts 31 to each other, and both the flow paths L1 and L2 are communicated with each other. The valve supporter A has an axial part A1 surrounding the shaft part 32 along the peripheral surface of the shaft part 32, stretched parts A2 extending from both end parts A1a of the axial part A1 to the inner peripheral surface 11a, and base parts A3 respectively connected to a tip part A2a of the stretched part A2 and formed along the inner peripheral surface 11a. Further, the axial part A1, the stretched part A2 and the base part A3 are respectively formed into a plate shape thin in the cross section of the flow paths L1 and L2. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、例えば、カップラーなどといわれる弁付の管継手及びこの弁付の管継手に用いられる弁の支持具に関するものである。   The present invention relates to, for example, a pipe joint with a valve called a coupler and the like, and a valve support used for the pipe joint with the valve.

従来から、油圧機器などに用いられ、水や油などの流体が流れる管の継手として、カップラーなどといわれる弁付の管継手が知られている（例えば、特許文献１、特許文献２、特許文献３参照。）。この弁付の管継手は、例えば、図１９及び図２０に示すように、ノーズなどといわれる雄継手１１０と、ボディーなどといわれる雌継手１２０との組合せで構成されている。   2. Description of the Related Art Conventionally, pipe joints with valves called couplers or the like are known as joints of pipes used in hydraulic equipment and the like through which fluids such as water and oil flow (for example, Patent Document 1, Patent Document 2, Patent Document). 3). For example, as shown in FIGS. 19 and 20, the valve-equipped pipe joint is configured by a combination of a male joint 110 called a nose and a female joint 120 called a body.

より詳細には、雄継手１１０がノーズ本体などといわれる筒状の雄筒体１１を有し、この雄筒体１１の内周面１１ａが流路Ｌ１を形成している。同様に、雌継手１２０がボディー本体などといわれる筒状の雌筒体２１を有し、この雌筒体２１の内周面２１ａが流路Ｌ２を形成している。このようにしてなる雄筒体１１及び雌筒体２１は、雄筒体１１の先端部１１Ａを雌筒体２１の先端部内周面２１Ａで形成された開口部に嵌入しつつ、例えば、螺合し、あるいは図示例のような連結機構７０を利用するなどの適宜の方法で固定して、連結することができる。   More specifically, the male joint 110 has a cylindrical male cylinder 11 referred to as a nose body, and the inner peripheral surface 11a of the male cylinder 11 forms a flow path L1. Similarly, the female joint 120 has a cylindrical female cylinder 21 called a body body, and the inner peripheral surface 21a of the female cylinder 21 forms a flow path L2. The male cylindrical body 11 and the female cylindrical body 21 thus configured are, for example, screwed while fitting the distal end portion 11A of the male cylindrical body 11 into the opening formed by the inner peripheral surface 21A of the distal end portion of the female cylindrical body 21. Alternatively, they can be fixed and connected by an appropriate method such as using a connecting mechanism 70 as shown in the drawing.

また、雄継手１１０及び雌継手１２０は、流路Ｌ１，Ｌ２に、それぞれポペットバルブなどといわれる弁３０が備えられている。この弁３０は、ポペットなどといわれるテーパー状（円錐状）の頭部３１と、この頭部３１から他方の筒体１１，２１とは反対側、つまり基端側に延出する頭部３１よりも小径の軸部３２とを有する。なお、他方の筒体１１，２１とは、流路Ｌ１に備えられた弁３０においては雌筒体２１を、流路Ｌ２に備えられた弁３０においては雄筒体１１を意味する。   Further, the male joint 110 and the female joint 120 are provided with valves 30 called poppet valves or the like in the flow paths L1 and L2, respectively. The valve 30 includes a tapered (conical) head portion 31 called a poppet and the like, and a head portion 31 extending from the head portion 31 to the side opposite to the other cylinders 11 and 21, that is, the proximal end side. Also has a small-diameter shaft portion 32. The other cylinders 11 and 21 mean the female cylinder 21 in the valve 30 provided in the flow path L1 and the male cylinder 11 in the valve 30 provided in the flow path L2.

さらに、雄継手１１０及び雌継手１２０は、流路Ｌ１，Ｌ２に、ポペットガイドなどといわれる弁３０の支持具４０が備えられている。この弁支持具４０は、図２１及び図２２に示すように、筒体１１，２１の内周面１１ａ，２１ａに内接する第１の円筒部４１と、弁３０の軸部３２に外接する第１の円筒部４１より小径の第２の円筒部４３とを有する。加えて、弁支持具４０は、第１の円筒部４１と第２の円筒部４３とに繋がる架橋部４２を有する。この架橋部４２は、第１の円筒部４１の先端縁と繋がり、この先端縁で形成される開口縁４１ａを直径方向に横切る平板状とされている。また、この架橋部４２は、中心部において第２の円筒部４３の基端縁と繋がっており、したがって架橋部４２の幅Ｘは、第２の円筒部４３を確実に支持することができるよう第２の円筒部４３の直径とほぼ同じとされている。さらに、架橋部４２には、第２の円筒部４３の基端縁で形成される開口縁４３ａと同形状の孔が形成されており、この孔も弁３０の軸部３２に外接するようになっている。   Furthermore, the male joint 110 and the female joint 120 are provided with a support tool 40 of the valve 30 called a poppet guide or the like in the flow paths L1 and L2. As shown in FIGS. 21 and 22, the valve support 40 includes a first cylindrical portion 41 that is inscribed in the inner peripheral surfaces 11 a and 21 a of the cylindrical bodies 11 and 21 and a shaft portion 32 of the valve 30. A second cylindrical portion 43 having a smaller diameter than the first cylindrical portion 41. In addition, the valve support 40 has a bridging portion 42 connected to the first cylindrical portion 41 and the second cylindrical portion 43. The bridging portion 42 is connected to the leading edge of the first cylindrical portion 41 and has a flat plate shape that crosses the opening edge 41a formed by the leading edge in the diameter direction. In addition, the bridging portion 42 is connected to the base end edge of the second cylindrical portion 43 at the center portion, and thus the width X of the bridging portion 42 can support the second cylindrical portion 43 reliably. The diameter of the second cylindrical portion 43 is substantially the same. Further, a hole having the same shape as the opening edge 43 a formed at the base end edge of the second cylindrical portion 43 is formed in the bridging portion 42, and this hole is also circumscribed to the shaft portion 32 of the valve 30. It has become.

以上のようにしてなる弁支持具４０の第１の円筒部４１の基端縁は、図１９及び図２０に示すように、筒体１１，２１の内周面１１ａ，２１ａにこの内周面１１ａ，２１ａから内周部が突出するように嵌め込まれた環状の掛止リング９に掛止されている。なお、この掛止は、例えば、Ｃ型止め輪、スピロロックス等を利用して行われ、あるいは内周面１１ａ，２１ａの一部が縮径してなる突状部を利用して行われることなどもある。   As shown in FIGS. 19 and 20, the base end edge of the first cylindrical portion 41 of the valve support 40 configured as described above is formed on the inner peripheral surfaces 11 a and 21 a of the cylindrical bodies 11 and 21. 11a and 21a are hooked on an annular hooking ring 9 fitted so that the inner peripheral portion protrudes. In addition, this latching is performed using, for example, a C-type retaining ring, a spiro lock, or the like, or using a protruding portion in which a part of the inner peripheral surfaces 11a and 21a is reduced in diameter. There are also.

以上の掛止によって弁支持具４０は、筒体１１，２１に対して、基端側へは移動不能に固定されている。他方、弁支持具４０の第２の円筒部４３内には、弁３０の軸部３２が挿通されている。したがって、軸部３２は、弁支持具４０によって、軸方向へは移動可能に支持された状態となっている。   With the above-described latching, the valve support 40 is fixed so as not to move toward the proximal end with respect to the cylinders 11 and 21. On the other hand, the shaft portion 32 of the valve 30 is inserted into the second cylindrical portion 43 of the valve support 40. Therefore, the shaft portion 32 is supported by the valve support 40 so as to be movable in the axial direction.

さらに、雄継手１１０及び雌継手１２０は、流路Ｌ１，Ｌ２に、コイル状のスプリングなどからなる付勢部材８が備えられている。この付勢部材８は、弁支持具４０の架橋部４２の先端側面と頭部３１の底面（基端側面）との間に介在されており、第２の円筒部４３に外接している。したがって、頭部３１は、付勢部材８によって他方の筒体１１，２１側に付勢される。そして、この付勢により、図１９に示すように、雄筒体１１の先端部１１Ａが雌筒体２１の前述開口部に嵌入されていない状態（嵌入が外れた状態）においては、流路Ｌ１，Ｌ２が塞がれた状態となる。より詳細には、この流路Ｌ１，Ｌ２を形成する筒体１１，２１の内周面１１ａ，２１ａには、軸心側（内方）に突出する縮径部１２，２２が設けられている。そして、頭部３１が他方の筒体１１，２１側に付勢されて先端側に移動すると、当該縮径部１２，２２の内周面と頭部３１のテーパー面とが当接し、この当接によって流路Ｌ１，Ｌ２が塞がれる。   Further, the male joint 110 and the female joint 120 are provided with a biasing member 8 made of a coiled spring or the like in the flow paths L1 and L2. The biasing member 8 is interposed between the distal end side surface of the bridging portion 42 of the valve support 40 and the bottom surface (base end side surface) of the head portion 31, and circumscribes the second cylindrical portion 43. Accordingly, the head portion 31 is urged toward the other cylinders 11 and 21 by the urging member 8. And as shown in FIG. 19, by this energization, in the state where 11 A of front-end | tip parts of the male cylinder 11 are not inserted in the above-mentioned opening part of the female cylinder 21 (state where insertion was removed), it is flow path L1. , L2 is closed. More specifically, the inner peripheral surfaces 11a and 21a of the cylinders 11 and 21 that form the flow paths L1 and L2 are provided with reduced diameter portions 12 and 22 that protrude toward the axial center side (inward). . When the head portion 31 is urged toward the other cylinders 11 and 21 and moves to the distal end side, the inner peripheral surfaces of the reduced diameter portions 12 and 22 and the tapered surface of the head portion 31 come into contact with each other. The flow paths L1 and L2 are closed by the contact.

他方、図２０に示すように、雄筒体１１の先端部１１Ａが雌筒体２１の前述開口部に嵌入された状態においては、両流路Ｌ１，Ｌ２が連通した状態となる。より詳細には、まず、嵌入が外れた状態においては、図１９に示すように、一方の頭部３１の先端部が、雄筒体１１の内周面１１ａに形成された縮径部１２の先端面から突出し、他方の頭部３１の先端部が、雌筒体２１の内周面２１ａに形成された縮径部２２の先端面から突出している。また、嵌入状態においては、図２０に示すように、筒体１１の内周面１１ａに形成された縮径部１２の先端面と筒体２１の内周面２１ａに形成された縮径部２２の先端面とが突き当たり、位置決めされる。したがって、嵌入状態においては、両頭部３１，３１が相互に押し合い、この押し合いにより両頭部３１，３１が縮径部２１，２２から離れ、もって両流路Ｌ１，Ｌ２が連通する。   On the other hand, as shown in FIG. 20, in a state where the distal end portion 11 </ b> A of the male cylinder body 11 is fitted into the opening of the female cylinder body 21, both the flow paths L <b> 1 and L <b> 2 are in communication with each other. More specifically, first, in the disengaged state, as shown in FIG. 19, the distal end portion of one head portion 31 has a reduced diameter portion 12 formed on the inner peripheral surface 11 a of the male cylindrical body 11. Projecting from the distal end surface, the distal end portion of the other head portion 31 projects from the distal end surface of the reduced diameter portion 22 formed on the inner peripheral surface 21 a of the female cylindrical body 21. In the inserted state, as shown in FIG. 20, the distal end surface of the reduced diameter portion 12 formed on the inner peripheral surface 11 a of the cylindrical body 11 and the reduced diameter portion 22 formed on the inner peripheral surface 21 a of the cylindrical body 21. The front end surface of this is abutted and positioned. Therefore, in the inserted state, both heads 31 and 31 are pressed against each other, and both the heads 31 and 31 are separated from the reduced diameter portions 21 and 22 by this pressing, so that both flow paths L1 and L2 are communicated.

以上のようにして構成される弁付管継手１００は、雄継手１１０と雌継手１２０との連結が容易であり既に汎用されているが、次のような問題点も指摘されている。
すなわち、図２１から明らかなように、従来の弁付管継手１００においては、弁支持具４０の架橋部４２が大きな抵抗となるため、流路Ｌ１，Ｌ２を流れる流体の圧力損失が大きい。他方、この圧力損失を低減しようと架橋部４２の幅Ｘを狭くすると、第１の円筒部４１と第２の円筒部４３との一体化強度が保てなくなることなどを原因として、弁３０（軸部３２）の移動方向が軸方向に対して傾いてしまうおそれがある。弁３０の移動方向が傾くと、弁３０が先端側に移動しても縮径部１２，２２の内周面と頭部３１のテーパー面とが完全に当接せず、流路Ｌ１，Ｌ２が完全に塞がれなくなる。しかも、当該弁支持具４０は、切削加工などによって製造する必要があり、製造コストもかさんでいる。 The valved pipe joint 100 configured as described above is easy to connect the male joint 110 and the female joint 120 and is already widely used. However, the following problems have also been pointed out.
That is, as apparent from FIG. 21, in the conventional valve-equipped pipe joint 100, the bridging portion 42 of the valve support 40 has a large resistance, so the pressure loss of the fluid flowing through the flow paths L <b> 1 and L <b> 2 is large. On the other hand, if the width X of the bridging portion 42 is narrowed to reduce this pressure loss, the integrated strength of the first cylindrical portion 41 and the second cylindrical portion 43 cannot be maintained, and the valve 30 ( The moving direction of the shaft portion 32) may be inclined with respect to the axial direction. When the moving direction of the valve 30 is inclined, the inner peripheral surfaces of the reduced diameter portions 12 and 22 and the tapered surface of the head portion 31 do not come into full contact with each other even if the valve 30 moves toward the tip side, and the flow paths L1 and L2 Will not be completely blocked. Moreover, the valve support 40 needs to be manufactured by cutting or the like, and the manufacturing cost is also increased.

一方、従来の弁付管継手としては、弁支持具４０を、図２３及び図２４に示す弁支持具５０に変えたものもある。この弁支持具５０は、弁３０の軸部３２に外接する円筒部５１と、この円筒部５１から径方向に突出し、突端部が筒体１１，２１の内周面１１ａ，２１ａに内接する円弧状とされた適宜の数の、図示例では４本の突部５２，５２…とを有する。このようにしてなる弁支持具５０は、突部５２突端部が掛止リング９に掛止される。この掛止によって弁支持具５０は、筒体１１，２１に対して、基端側へは移動不能に固定される。他方、弁支持具５０の円筒部５１内には、弁３０の軸部３２が挿通される。したがって、軸部３２は、弁支持具５０によって、軸方向へは移動可能に支持される。   On the other hand, as a conventional valve-equipped pipe joint, there is one in which the valve support 40 is replaced with a valve support 50 shown in FIGS. The valve support 50 includes a cylindrical portion 51 that circumscribes the shaft portion 32 of the valve 30, and a circle that protrudes radially from the cylindrical portion 51, and the protruding end portion is inscribed in the inner peripheral surfaces 11 a and 21 a of the cylindrical bodies 11 and 21. In the illustrated example, there are four protrusions 52, 52... In the valve support 50 thus configured, the protruding portion 52 protrudes from the locking ring 9. By this latching, the valve support 50 is fixed to the cylinders 11 and 21 so as not to move toward the base end side. On the other hand, the shaft portion 32 of the valve 30 is inserted into the cylindrical portion 51 of the valve support 50. Therefore, the shaft portion 32 is supported by the valve support 50 so as to be movable in the axial direction.

さらに、この弁支持具５０による場合は、付勢部材８が弁支持具５０の突部５２と頭部３１の底面（基端側面）との間に介在され、円筒部５１に外接する。これにより、頭部３１は、付勢部材８によって他方の筒体１１，２１側に付勢され、前述した弁付管継手１００と同様の機能が発揮される。   Further, in the case of this valve support 50, the urging member 8 is interposed between the protrusion 52 of the valve support 50 and the bottom surface (base end side surface) of the head 31 and circumscribes the cylindrical portion 51. Thereby, the head part 31 is urged | biased by the other cylinders 11 and 21 side by the urging | biasing member 8, and the function similar to the valve fitting 100 mentioned above is exhibited.

しかしながら、図２３から明らかなように、弁支持具５０を用いたとしても、突部５２が抵抗となるため、流路Ｌ１，Ｌ２を流れる流体の圧力損失は大きい。この圧力損失を低減しようと突部５２の幅Ｙを狭くすると、突部５２の強度が保てなくなるなどし、結果、弁３０（軸部３２）の移動方向が軸方向に対して傾いてしまい、支持具４０におけるのと同様の問題（流路Ｌ１，Ｌ２が完全に塞がれなくなるおそれ）が生じる。また、支持具５０は、金属の焼結加工などによって製造する必要があり、製造コストもかさんでいる。   However, as is apparent from FIG. 23, even if the valve support 50 is used, the protrusion 52 becomes a resistance, so that the pressure loss of the fluid flowing through the flow paths L1 and L2 is large. If the width Y of the projection 52 is reduced to reduce this pressure loss, the strength of the projection 52 cannot be maintained, and as a result, the moving direction of the valve 30 (shaft portion 32) is inclined with respect to the axial direction. The same problem as in the support tool 40 (the possibility that the flow paths L1 and L2 may not be completely blocked) occurs. Further, the support 50 needs to be manufactured by a metal sintering process or the like, and the manufacturing cost is also increased.

このほか雄継手１１０や雌継手１２０を構成する、例えば、筒体１１，２１や弁３０などの各部材は、ある程度の汎用性を有しており、また、製造ラインも確立されたものが既に存在する。したがって、例えば、特許文献４に示すように、弁自体の形状を改良するなどして圧力損失を低減するのではなく、従来の弁などをそのまま用いつつ、弁支持具４０，５０を改良して圧力損失を低減することが望まれる。
特開平８−３２００９２号公報 特開２００４−１００８４４号公報 特開２００６−１０５２８５号公報 特開平１１−２０１３５８号公報 In addition, the members constituting the male joint 110 and the female joint 120, such as the cylinders 11 and 21 and the valve 30, have a certain degree of versatility, and have already established a production line. Exists. Therefore, for example, as shown in Patent Document 4, the pressure loss is not reduced by improving the shape of the valve itself, but the valve supports 40 and 50 are improved while using the conventional valve as it is. It is desirable to reduce pressure loss.
JP-A-8-320092 JP 2004-1009044 A JP 2006-105285 A JP-A-11-201358

本発明が解決しようとする主たる課題は、圧力損失が低減され、十分な強度を有し、しかも製造コストが削減される弁付管継手及びこの弁付管継手に用いられる弁支持具を提供することにある。   SUMMARY OF THE INVENTION The main problem to be solved by the present invention is to provide a valve fitting with reduced pressure loss, sufficient strength, and reduced manufacturing cost, and a valve support used for the valve fitting. There is.

この課題を解決した本発明は、次のとおりである。
〔請求項１記載の発明〕
内周面が流路を形成する雄筒体と、内周面が流路を形成し、かつ前記雄筒体の先端部が嵌入される雌筒体と、を有し、
前記両流路それぞれに、頭部及びこの頭部から他方の筒体とは反対側に延出する前記頭部より小径の軸部を有する弁と、前記筒体に固定され、かつ前記軸部を軸方向に移動可能に支持する弁支持具と、この弁支持具及び前記頭部の間に介在されてこの頭部を前記他方の筒体側に付勢する付勢部材と、が備えられ、
前記嵌入が外れた状態においては、前記頭部が前記他方の筒体側に付勢されて前記内周面に設けられた縮径部と当接し、この当接によって前記流路が塞がれ、前記嵌入の状態においては、前記両頭部が相互に押し合い、この押し合いにより前記両頭部が前記縮径部から離れて前記両流路が連通する、構成とされた弁付管継手であって、
前記弁支持具は、前記軸部の周面に沿い、かつ複数で前記軸部を囲い込む軸通部と、これら軸通部の両端部からそれぞれ前記内周面まで延出する架渡し部と、相互に隣接する軸通部から延出する相互に隣接する架渡し部の両先端部と繋がり、かつ前記内周面に沿う基部と、を有するとともに、
前記軸通部、前記架渡し部及び前記基部が、いずれも前記流路の断面方向が肉薄となる板状である、
ことを特徴とする弁付管継手。 The present invention that has solved this problem is as follows.
[Invention of Claim 1]
A male cylinder whose inner peripheral surface forms a flow path, and a female cylinder whose inner peripheral surface forms a flow path and into which a tip of the male cylinder is fitted,
A valve having a head portion and a shaft portion having a smaller diameter than the head portion extending from the head portion to the opposite side to the other tubular body, the shaft portion being fixed to the tubular body, and the shaft portion. And a biasing member that is interposed between the valve support and the head, and biases the head toward the other cylindrical body.
In the disengaged state, the head is urged toward the other cylindrical body and comes into contact with a reduced diameter portion provided on the inner peripheral surface, and the flow path is closed by this contact, In the inserted state, the both heads are pressed against each other, the both heads are separated from the reduced diameter portion by the pressing, and the both flow passages communicate with each other.
The valve support includes a plurality of shaft-passing portions that surround the shaft portion along a peripheral surface of the shaft portion, and a bridge portion that extends from both ends of the shaft-passing portion to the inner peripheral surface, respectively. A base portion that extends from the mutually adjacent shaft passing portions and is connected to both distal end portions of the adjacent bridging portions and extends along the inner peripheral surface;
The shaft passing part, the bridge part, and the base part are all plate-like in which the cross-sectional direction of the flow path is thin.
A valve-equipped fitting.

〔請求項２記載の発明〕
内周面が流路を形成する雄筒体と、内周面が流路を形成し、かつ前記雄筒体の先端部が嵌入される雌筒体と、を有し、
前記両流路それぞれに、頭部及びこの頭部から他方の筒体とは反対側に延出する前記頭部より小径の軸部を有する弁と、前記頭部の前記他方の筒体とは反対側に配置されてこの頭部を前記他方の筒体側に付勢する付勢部材と、が備えられ、
前記嵌入が外れた状態においては、前記頭部が前記他方の筒体側に付勢されて前記内周面に設けられた縮径部と当接し、この当接によって前記流路が塞がれ、前記嵌入の状態においては、前記両頭部が相互に押し合い、この押し合いにより前記両頭部が前記縮径部から離れて前記両流路が連通する、構成とされた弁付管継手に用いられるものであり、
前記頭部との間に前記付勢部材が介在された状態で前記筒体に固定され、かつ前記軸部を軸方向に移動可能に支持する前記弁の支持具であって、
前記軸部の周面に沿い、かつ複数で前記軸部を囲い込む軸通部と、これら軸通部の両端部からそれぞれ前記内周面まで延出する架渡し部と、相互に隣接する軸通部から延出する相互に隣接する架渡し部の両先端部と繋がり、かつ前記内周面に沿う基部と、を有するとともに、
前記軸通部、前記架渡し部及び前記基部が、いずれも前記流路の断面方向が肉薄となる板状である、
ことを特徴とする弁付管継手の弁支持具。 [Invention of Claim 2]
A male cylinder whose inner peripheral surface forms a flow path, and a female cylinder whose inner peripheral surface forms a flow path and into which a tip of the male cylinder is fitted,
In each of the two flow paths, a head and a valve having a shaft portion having a smaller diameter than the head extending from the head to the opposite side of the other cylinder, and the other cylinder of the head An urging member that is arranged on the opposite side and urges the head toward the other cylindrical body,
In the disengaged state, the head is urged toward the other cylindrical body and comes into contact with a reduced diameter portion provided on the inner peripheral surface, and the flow path is closed by this contact, In the inserted state, the both heads are pressed against each other, and by this pressing, the both heads are separated from the reduced diameter portion and the both flow paths communicate with each other. Yes,
The valve support that is fixed to the cylinder in a state where the biasing member is interposed between the head and the head and that supports the shaft portion so as to be movable in the axial direction.
A plurality of shaft-passing portions that surround the shaft portion along the peripheral surface of the shaft portion, a bridge portion that extends from both ends of the shaft-passing portion to the inner peripheral surface, and shafts adjacent to each other And having a base portion that is connected to both front end portions of the crossing portions adjacent to each other extending from the passage portion and that extends along the inner peripheral surface,
The shaft passing part, the bridge part, and the base part are all plate-like in which the cross-sectional direction of the flow path is thin.
A valve support for a valve-equipped pipe joint.

〔請求項３記載の発明〕
前記軸通部は２つで、一の前記基部と繋がる前記架渡し部が中心角１５〜１８０°の角度をもって前記流路の径方向に延出したものである、請求項２記載の弁付管継手の弁支持具。 [Invention of Claim 3]
3. The valve attachment according to claim 2, wherein the number of the shaft passing portions is two, and the bridge portion connected to one base portion extends in a radial direction of the flow path with an angle of 15 to 180 ° in the center. Valve support for pipe fittings.

本発明によると、圧力損失が低減され、十分な強度を有し、しかも製造コストが削減される弁付管継手及びこの弁付管継手に用いられる弁支持具となる。   According to the present invention, a valve joint having a valve with a reduced pressure loss, a sufficient strength, and a reduced manufacturing cost, and a valve support used for the valve joint.

次に、本発明の実施の形態を説明する。なお、図１及び図２に示すように、本実施の形態の弁付管継手１は、従来の弁付管継手１００とほぼ同じ部材で構成されており（同一の部材は同一の符号で示す）、従来の弁支持具４０，５０が本実施の形態の支持具Ａに変わっている点が異なる。そこで、以下では、まず、弁付管継手１全般について、前述しなかった補足説明のみを行い、その後、本実施の形態の支持具について詳細に説明する。   Next, an embodiment of the present invention will be described. As shown in FIGS. 1 and 2, the valve-equipped pipe joint 1 of the present embodiment is configured by substantially the same members as the conventional valve-equipped pipe joint 100 (the same members are denoted by the same reference numerals). ), Except that the conventional valve supports 40 and 50 are changed to the support A of the present embodiment. Therefore, in the following, first, only the supplementary explanation that has not been described above will be given to the valve-equipped pipe joint 1 in general, and then the support according to the present embodiment will be described in detail.

〔弁付管継手〕
図１及び図２に示すように、本実施の形態の弁付管継手１は、ノーズなどといわれる雄継手２と、ボディーなどといわれる雌継手３との組合せで構成されている。この雄継手２及び雌継手３は、前述した従来の雄継手１１０又は雌継手１２０に対応するものである。 (Fitting with valve)
As shown in FIGS. 1 and 2, the valve-equipped pipe joint 1 according to the present embodiment is configured by a combination of a male joint 2 called a nose and a female joint 3 called a body. The male joint 2 and the female joint 3 correspond to the conventional male joint 110 or female joint 120 described above.

雄継手２と雌継手３との連結方法は、特に限定されず、例えば、雄筒体１１と雌筒体２１とを螺合するなどして固定し、連結することもできる。ただし、本実施の形態では、連結容易性という観点から、連結機構７０を利用して固定し、連結する方法を採用している。この連結機構７０は、雌筒体２１の先端部に、同軸的に、かつ外接するように備えられたカラーなどといわれる連結筒体７１を有する。この連結筒体７１は、先端側が肉厚、基端側が肉薄とされ、この肉薄部の内周面と雌筒体２１の外周面との間にコイル状のスプリングなどからなる付勢部材７２が介在されている。この付勢部材７２は、連結筒体７１の肉厚部と肉薄部との段差部分に掛合しており、連結筒体７１を先端側に付勢している。ただし、雌筒体２１の先端部外周面には、この外周面から突出するように環状のリングや、複数のボール部材等で構成された突部材７３が嵌め込まれている。したがって、連結筒体７１の肉厚部が当該突部材７３と掛合することによって、当該付勢による連結筒体７１の先端側への移動が限界付けられ、通常、この状態にある。一方、連結機構７０はボール部材７５を有し、このボール部材７５は雌筒体２１の先端部に形成された孔７６内に配置されている。ボール部材７５は、通常、連結筒体７１の肉厚部内周面によって覆われ、外方への移動が阻止されている。また、孔７６の内方側の径はボール部材７５の径よりも小さくなっており、ボール部材７５は雌筒体２１の内周面２１Ａから突出した状態で移動不能となっている。本形態において、ボール部材７５及び孔７６は、雌筒体２１の周方向に適宜の間隔をおいて複数設けられている。   The connection method of the male joint 2 and the female joint 3 is not specifically limited, For example, the male cylinder body 11 and the female cylinder body 21 can be fixed, for example, by screwing. However, in the present embodiment, from the viewpoint of easy connection, a method of fixing and connecting using the connecting mechanism 70 is adopted. The connecting mechanism 70 has a connecting cylinder 71 called a collar or the like that is coaxially and circumscribed at the tip of the female cylinder 21. The connecting cylinder 71 is thick at the distal end and thin at the proximal end, and a biasing member 72 made of a coiled spring or the like is provided between the inner peripheral surface of the thin portion and the outer peripheral surface of the female cylinder 21. Intervened. The urging member 72 is engaged with the step portion between the thick portion and the thin portion of the connecting cylinder 71 and urges the connecting cylinder 71 toward the tip side. However, a projecting member 73 composed of an annular ring or a plurality of ball members is fitted on the outer peripheral surface of the distal end portion of the female cylinder 21 so as to protrude from the outer peripheral surface. Therefore, when the thick part of the connecting cylinder 71 engages with the protruding member 73, the movement of the connecting cylinder 71 to the front end side due to the biasing is limited, and this state is usually in this state. On the other hand, the connecting mechanism 70 has a ball member 75, and the ball member 75 is disposed in a hole 76 formed at the tip of the female cylinder 21. The ball member 75 is normally covered with the inner peripheral surface of the thick portion of the connecting cylinder 71 and is prevented from moving outward. Further, the diameter of the inner side of the hole 76 is smaller than the diameter of the ball member 75, and the ball member 75 is immovable while protruding from the inner peripheral surface 21 </ b> A of the female cylinder 21. In this embodiment, a plurality of ball members 75 and holes 76 are provided at appropriate intervals in the circumferential direction of the female cylinder 21.

以上のようにしてなる連結機構７０を用いて雄継手２と雌継手３とを連結するにあたっては、まず、連結筒体７１を基端側に移動（スライド）し、ボール部材７５を外方へ移動可能とする。次に、この状態において、雄筒体１１の先端部１１Ａを雌筒体２１の先端部内周面２１Ａで形成された開口部に嵌入する。この嵌入時において、ボール部材７５は外方へ移動可能とされているため、ボール部材７５が嵌入の妨げとなることはない。この嵌入によって、図２に示すように、雄筒体１１の内周面１１ａに形成された縮径部１２の先端面と雌筒体２１の内周面２１ａに形成された縮径部２２の先端面とが突き当たった状態になると、ボール部材７５は、雄筒体１１の先端部１１Ａに形成された凹部７７内に嵌入する。そして、この状態において、連結筒体７１を基端側へ移動するのを中止すれば、連結筒体７１は付勢部材７２によって先端側に移動され、ボール部材７５を覆い、ボール部材７５の外方への移動を不能とする。このようにして、ボール部材７５と凹部７７とが掛合状態となり、雄継手２と雌継手３とが固定され、連結が完了する。   When the male joint 2 and the female joint 3 are connected using the connecting mechanism 70 as described above, first, the connecting cylinder 71 is moved (slid) to the proximal end side, and the ball member 75 is moved outward. It can be moved. Next, in this state, the distal end portion 11 </ b> A of the male cylindrical body 11 is fitted into the opening formed on the inner peripheral surface 21 </ b> A of the distal end portion of the female cylindrical body 21. At the time of this insertion, since the ball member 75 can move outward, the ball member 75 does not hinder the insertion. By this insertion, as shown in FIG. 2, the distal end surface of the reduced diameter portion 12 formed on the inner peripheral surface 11 a of the male cylindrical body 11 and the reduced diameter portion 22 formed on the inner peripheral surface 21 a of the female cylindrical body 21. When the front end surface comes into contact with the front end surface, the ball member 75 is fitted into a recess 77 formed in the front end portion 11A of the male cylindrical body 11. In this state, if the movement of the connecting cylinder 71 to the proximal end is stopped, the connecting cylinder 71 is moved to the distal end side by the urging member 72, covers the ball member 75, and the outside of the ball member 75. The movement to the direction is made impossible. In this way, the ball member 75 and the recess 77 are engaged with each other, the male joint 2 and the female joint 3 are fixed, and the connection is completed.

ところで、本形態においては、雌筒体２１の先端部内周面２１Ａに周方向に沿う環状溝が形成されており、この環状溝内に、Ｏ‐リング等からなるシール材４が埋め込まれている。これにより、嵌入状態においては、シール材４の内周面と雄筒体１１先端部１１Ａの外周面とが当接し、当該雄筒体１１の先端部１１Ａ外周面と雌筒体２１の先端部内周面２１Ａとの間から流体が漏れるのが防止される。他方、嵌入が外された状態においては、図１に示すように、縮径部１２，２２の内周面と頭部３１のテーパー面とが当接し、この当接によって流路Ｌ１，Ｌ２が塞がれる。本形態においては、この流路Ｌ１，Ｌ２の閉塞をより完全なものとするために、頭部３１のテーパー面に周方向に沿う環状溝が形成されており、この環状溝内にシール材５が埋め込まれている。このシール材５は、例えば、Ｏ‐リングによって形成することや、特開２００６‐１０５２８５号公報に開示されるようなゴム材の焼付けによって形成することなどができる。   By the way, in this embodiment, an annular groove is formed along the circumferential direction on the inner peripheral surface 21A of the distal end portion of the female cylindrical body 21, and a sealing material 4 made of an O-ring or the like is embedded in the annular groove. . Thereby, in the inserted state, the inner peripheral surface of the sealing material 4 and the outer peripheral surface of the distal end portion 11A of the male cylindrical body 11 abut, and the outer peripheral surface of the distal end portion 11A of the male cylindrical body 11 and the inner end portion of the female cylindrical body 21 are in contact. The fluid is prevented from leaking from between the peripheral surface 21A. On the other hand, in the state where the insertion is removed, as shown in FIG. 1, the inner peripheral surfaces of the reduced diameter portions 12 and 22 and the tapered surface of the head portion 31 come into contact with each other. It is blocked. In the present embodiment, an annular groove is formed in the tapered surface of the head portion 31 along the circumferential direction in order to make the flow paths L1 and L2 more completely closed, and the sealing material 5 is formed in the annular groove. Is embedded. The sealing material 5 can be formed by, for example, an O-ring or by baking a rubber material as disclosed in JP-A-2006-105285.

一方、本形態においては、図２中に拡大して示すように、頭部３１の基端側に整流リング６を備えることもできる。この整流リング６は、底面が頭部３１の底面とほぼ同じ径の円錐状とされており、軸心部には貫通孔が形成されている。この整流リング６を例えば流路Ｌ２に配置するにあたっては、底面が頭部３１の底面と対面する向きとし、かつ軸心部に形成された貫通孔内を弁３０の軸部３２及び付勢部材８が通るようにする。この整流リング６の配置により、頭部３１の基端側において乱流等が生じなくなるため、圧力損失が低減される。この整流リング６を配置するにあたっては、例えば、特開平８‐３２００９２号公報などを参考にすることもできる。   On the other hand, in this embodiment, as shown in an enlarged view in FIG. 2, the rectifying ring 6 can be provided on the proximal end side of the head 31. The rectifying ring 6 has a bottom surface having a conical shape having substantially the same diameter as the bottom surface of the head portion 31, and a through hole is formed in the axial center portion. For example, when the rectifying ring 6 is disposed in the flow path L2, the bottom surface is oriented to face the bottom surface of the head portion 31, and the shaft portion 32 and the biasing member of the valve 30 pass through the through-hole formed in the shaft center portion. Let 8 pass. With the arrangement of the rectifying ring 6, turbulent flow or the like does not occur on the proximal end side of the head portion 31, so pressure loss is reduced. In disposing the rectifying ring 6, for example, JP-A-8-320092 can be referred to.

〔弁支持具〕
次に、本実施の形態の弁支持具Ａについて、説明する。なお、弁支持具Ａは、流路Ｌ１にも流路Ｌ２にも同じ形態のものを備えることができ、以下では、流路Ｌ１に備える場合を例に説明する。 (Valve support)
Next, the valve support A of the present embodiment will be described. In addition, the valve support A can be provided with the same form in both the flow path L1 and the flow path L2, and the case where it is provided in the flow path L1 will be described below as an example.

本実施の形態の弁支持具Ａは、図３及び図４に示すように、軸通部Ａ１と、架渡し部Ａ２と、基部Ａ３とで主に構成される。軸通部Ａ１は、流路Ｌ１の断面方向に関して、弁３０を構成する軸部３２の周面に沿う形状、例えば、軸部３２が断面略真円形状とされている本形態においては、円弧状とされている。本形態において、軸通部Ａ１は、相互に対向するように２つ備えられており、この２つで軸部３２を囲い込む状態になっている。これにより、軸部３２は、軸方向へ移動可能に支持される。一方、架渡し部Ａ２は、軸通部Ａ１の両端部Ａ１ａからそれぞれ筒体１１の内周面１１ａまで延出しており、本形態では特に直線状とされている。また、基部Ａ３は、相互に隣接する軸通部Ａ１から延出する相互に隣接する架渡し部Ａ２の先端部Ａ２ａと繋がり、内周面１１ａに沿う形状、つまり内周面１１ａが断面略真円形状とされている本形態においては、円弧状とされている。このように架渡し部Ａ２が軸通部Ａ１と基部Ａ３とに繋がることによって、軸通部Ａ１が軸部３２から受けた力は、基部Ａ３、更には内周面１１ａに伝わる。したがって、この軸部３２からの力がよりダイレクトに内周面１１ａに伝わるよう（力がダイレクトに伝わらないと、軸部３２の移動方向が軸方向に対して傾いても内周面１１ａには伝わらず、傾いた状態での移動が解消されない可能性がある。）、架渡し部Ａ２は、流路Ｌ１の径方向に延出し、特に直線状に延出するのが好ましい。架渡し部Ａ２が直線状であると、材料費が削減されるとの効果や、圧力損失がより低減されるとの効果もある。また、弁支持具Ａの安定性という観点からは、基部Ａ３の長さが長い方が好ましい。この基部Ａ３の長さは、一の基部Ａ３と繋がる架渡し部Ａ２の中心角Ｚと比例する。したがって、この中心角Ｚが大きくなると弁支持具Ａは安定するが、他方、材料費や圧力損失も増加してしまう。そこで、これらのバランスという観点から、例えば、中心角Ｚを１５〜１８０°とするのが好ましく、図示例のように６０°とするのがより好ましい。   As shown in FIGS. 3 and 4, the valve support A of the present embodiment is mainly configured by a shaft passing part A <b> 1, a bridge part A <b> 2, and a base part A <b> 3. The shaft-passing portion A1 has a shape along the circumferential surface of the shaft portion 32 constituting the valve 30 with respect to the cross-sectional direction of the flow path L1, for example, in the present embodiment in which the shaft portion 32 has a substantially circular cross section. It is arcuate. In this embodiment, two shaft-passing portions A1 are provided so as to face each other, and the shaft portion 32 is enclosed by these two. Thereby, the axial part 32 is supported so that a movement to an axial direction is possible. On the other hand, the bridge portion A2 extends from both end portions A1a of the shaft passing portion A1 to the inner peripheral surface 11a of the cylindrical body 11, and is particularly linear in this embodiment. Further, the base A3 is connected to the distal end A2a of the adjacent bridging portion A2 extending from the mutually adjacent shaft passing portions A1, and the shape along the inner peripheral surface 11a, that is, the inner peripheral surface 11a is substantially true in cross section. In the present embodiment, which is circular, it has an arc shape. In this way, the connecting portion A2 is connected to the shaft portion A1 and the base portion A3, whereby the force received by the shaft portion A1 from the shaft portion 32 is transmitted to the base portion A3 and further to the inner peripheral surface 11a. Therefore, the force from the shaft portion 32 is more directly transmitted to the inner peripheral surface 11a (if the force is not transmitted directly, the inner peripheral surface 11a has no movement even if the moving direction of the shaft portion 32 is inclined with respect to the axial direction). There is a possibility that the movement in the tilted state will not be resolved without being transmitted.) It is preferable that the transfer portion A2 extends in the radial direction of the flow path L1, and particularly extends linearly. When the transfer portion A2 is linear, there is an effect that the material cost is reduced and an effect that the pressure loss is further reduced. Further, from the viewpoint of the stability of the valve support A, it is preferable that the length of the base A3 is long. The length of the base portion A3 is proportional to the central angle Z of the transfer portion A2 connected to the one base portion A3. Therefore, when the central angle Z is increased, the valve support A is stabilized, but on the other hand, the material cost and the pressure loss are also increased. Therefore, from the viewpoint of these balances, for example, the central angle Z is preferably set to 15 to 180 °, and more preferably set to 60 ° as in the illustrated example.

他方、本実施の形態の弁支持具Ａは、軸通部Ａ１、架渡し部Ａ２及び基部Ａ３が、いずれも流路Ｌ１の断面方向が肉薄となる板状とされている。これにより、図３から明らかなように、流路Ｌ１を通る流体の圧力損失が著しく低減する。しかも、平らな板材やパイプなどの折り曲げ加工や、切り抜き加工などによって、弁支持具Ａを製造することができ、製造コストが削減される。さらに、弁支持具Ａの長さＶ（軸部３２の軸方向を基準とする長さ、つまり流路Ｌ１の流れ方向を基準とする長さを意味する。）を長くするのみで、弁支持具Ａの強度（この強度には、例えば、軸通部Ａ１、架渡し部Ａ２及び基部Ａ３の一体化強度なども含まれる。）や安定性（例えば、内周面１１ａに対する安定性や、軸部３２を安定的に支持できる点など。）を適宜向上させることができる。もちろん、この弁支持具Ａの長さＶは、掛止リング９の位置によっても影響を受ける。前述弁付管継手１においては、掛止リング９が、従来の弁付管継手１００におけるよりも先端側に位置しており、これよりも基端側に位置させる場合は、弁支持具Ａの長さＶを長くすれば足りる。   On the other hand, in the valve support A of the present embodiment, the shaft passing part A1, the transfer part A2, and the base part A3 are all plate-like in which the cross-sectional direction of the flow path L1 is thin. Thereby, as apparent from FIG. 3, the pressure loss of the fluid passing through the flow path L1 is significantly reduced. In addition, the valve support A can be manufactured by bending a flat plate or pipe, cutting, or the like, and the manufacturing cost is reduced. Further, the valve support A can be supported only by lengthening the length V of the valve support A (meaning the length based on the axial direction of the shaft portion 32, that is, the length based on the flow direction of the flow path L1). The strength of the tool A (this strength includes, for example, the integrated strength of the shaft passing portion A1, the spanning portion A2, and the base portion A3) and stability (for example, stability to the inner peripheral surface 11a, shaft The point which can support the part 32 stably etc.) can be improved suitably. Of course, the length V of the valve support A is also influenced by the position of the retaining ring 9. In the aforementioned valve-equipped pipe joint 1, the retaining ring 9 is located on the distal end side relative to the conventional valve-equipped pipe joint 100, and when it is located on the proximal end side, the valve support A Increasing the length V is sufficient.

本形態の弁支持具Ａと従来の弁支持具４０との比較試験を行ったところ、本形態の弁支持具Ａによると、圧力損失を４４％程度削減できることが知見された。   When a comparative test between the valve support A of the present embodiment and the conventional valve support 40 was performed, it was found that the pressure loss can be reduced by about 44% according to the valve support A of the present embodiment.

なお、本発明において板状とは、平らに広がっている状態、つまり平板状であることに限定されるものではなく、例えば、途中で折れたり曲がったりしている状態をも含む。   In addition, in this invention, plate shape is not limited to the state spread flatly, ie, it is flat shape, For example, the state bent or bent in the middle is also included.

ところで、本発明に係る弁支持具としては、以上で説明した弁支持具Ａのほか、以下に示す形態も例示することができる。なお、以下の各形態では、流路Ｌ１にも流路Ｌ２にも同じ形態の弁支持具を備えることができるが、以下では、弁支持具を流路Ｌ１に備える場合を例に説明する。   By the way, as the valve support according to the present invention, in addition to the valve support A described above, the following forms can also be exemplified. In each of the following embodiments, the flow path L1 and the flow path L2 can be provided with the same type of valve support. However, in the following, a case where the valve support is provided in the flow path L1 will be described as an example.

（第１の変形例）
図５及び図６に示すように、本実施の形態の弁支持具Ｂは、軸通部Ｂ１と、架渡し部Ｂ２と、基部Ｂ３とで主に構成される。軸通部Ｂ１は、流路Ｌ１の断面方向に関して、弁３０を構成する軸部３２の周面に沿う形状、例えば、軸部３２が断面略真円形状とされている本形態においては、円弧状とされている。本形態において、軸通部Ｂ１は、相互に対向するように２つ備えられており、この２つで軸部３２を囲い込む状態になっている。これにより、軸部３２は、軸方向へ移動可能に支持される。以上の点において、弁支持具Ｂは、前述弁支持具Ａと同様であるが、相互に隣接する軸通部Ｂ１間の距離が相互に隣接する軸通部Ａ１間の距離よりも短く、つまり軸通部Ｂ１は軸通部Ａ１よりも中心角が大きな円弧状となっている。弁支持具の安定性という観点からは本形態の弁支持具Ｂが、材料費の削減という観点からは前述した弁支持具Ａが推奨される。 (First modification)
As shown in FIGS. 5 and 6, the valve support B of the present embodiment is mainly configured by a shaft passing part B1, a bridge part B2, and a base part B3. The shaft-passing portion B1 has a shape along the peripheral surface of the shaft portion 32 constituting the valve 30 with respect to the cross-sectional direction of the flow path L1, for example, in the present embodiment in which the shaft portion 32 has a substantially circular cross section. It is arcuate. In this embodiment, two shaft-passing portions B1 are provided so as to face each other, and the shaft portion 32 is enclosed by these two. Thereby, the axial part 32 is supported so that a movement to an axial direction is possible. In the above point, the valve support B is the same as the valve support A described above, but the distance between the adjacent shaft passing portions B1 is shorter than the distance between the adjacent shaft passing portions A1, that is, The shaft passing portion B1 has an arc shape having a larger central angle than the shaft passing portion A1. The valve support B of this embodiment is recommended from the viewpoint of the stability of the valve support, and the above-described valve support A is recommended from the viewpoint of reducing the material cost.

本形態においても、架渡し部Ｂ２は、軸通部Ｂ１の両端部Ｂ１ａからそれぞれ筒体１１の内周面１１ａまで延出しており、本形態では特に直線状とされている。   Also in this embodiment, the bridge portion B2 extends from the both end portions B1a of the shaft passing portion B1 to the inner peripheral surface 11a of the cylindrical body 11, and in this embodiment, is particularly linear.

また、基部Ｂ３は、相互に隣接する軸通部Ｂ１から延出する相互に隣接する架渡し部Ｂ２の先端部Ｂ２ａと繋がり、内周面１１ａに沿う形状、つまり内周面１１ａが断面略真円形状とされている本形態においては、円弧状とされている。このように架渡し部Ｂ２が軸通部Ｂ１と基部Ｂ３とに繋がることによって、軸通部Ｂ１が軸部３２から受けた力は、基部Ｂ３、更には内周面１１ａに伝わる。この軸部３２からの力がよりダイレクトに内周面１１ａに伝わるという観点からは、前述したように架渡し部Ｂ２は、流路Ｌ１の径方向に延出するのが好ましいが、本形態のように径方向に延出しない形態とすることもできる。ただし、本形態においても、架渡し部Ｂ２は、直線状に延出している。架渡し部Ｂ２が直線状であると、材料費が削減されるとの効果や、圧力損失がより低減されるとの効果がある。また、弁支持具Ｂの安定性という観点からは、基部Ｂ３の長さが長い方が好ましい。この基部Ｂ３の長さは、一の基部Ｂ３と繋がる架渡し部Ｂ２の中心角Ｚ２と比例する。したがって、この中心角Ｚ２が大きくなると弁支持具Ｂは安定するが、他方、材料費や圧力損失も増加してしまう。ただし、架渡し部Ｂ２が流路Ｌ１の径方向に延出しない本形態においては、弁支持具Ｂの安定性をより重視し、中心角Ｚ２を１８０°としている。   Further, the base B3 is connected to the tip B2a of the adjacent bridging part B2 extending from the mutually adjacent shaft passing parts B1, and the shape along the inner peripheral surface 11a, that is, the inner peripheral surface 11a is substantially true in cross section. In the present embodiment, which is circular, it has an arc shape. In this way, the connecting part B2 is connected to the shaft part B1 and the base part B3, whereby the force received by the shaft part B1 from the shaft part 32 is transmitted to the base part B3 and further to the inner peripheral surface 11a. From the viewpoint that the force from the shaft portion 32 is more directly transmitted to the inner peripheral surface 11a, the bridge portion B2 preferably extends in the radial direction of the flow path L1 as described above. Thus, it is possible to adopt a form that does not extend in the radial direction. However, also in this embodiment, the bridge portion B2 extends linearly. When the transfer part B2 is linear, there is an effect that the material cost is reduced and an effect that the pressure loss is further reduced. Further, from the viewpoint of the stability of the valve support B, it is preferable that the length of the base B3 is longer. The length of the base portion B3 is proportional to the central angle Z2 of the bridge portion B2 connected to the one base portion B3. Accordingly, when the central angle Z2 is increased, the valve support B is stabilized, but on the other hand, the material cost and the pressure loss are also increased. However, in the present embodiment in which the bridge portion B2 does not extend in the radial direction of the flow path L1, the stability of the valve support B is more important and the center angle Z2 is 180 °.

また、本実施の形態の弁支持具Ｂも、軸通部Ｂ１、架渡し部Ｂ２及び基部Ｂ３を、いずれも流路Ｌ１の断面方向が肉薄となる板状としている。これによる効果は、前述した弁支持具Ａの場合と同様である。   Also, in the valve support B of the present embodiment, the shaft passing part B1, the bridge part B2, and the base part B3 are all plate-like in which the cross-sectional direction of the flow path L1 is thin. The effect by this is the same as that of the valve support A described above.

（第２の変形例）
図７及び図８に示すように、本実施の形態の弁支持具Ｃは、軸通部Ｃ１と、架渡し部Ｃ２と、基部Ｃ３とで主に構成される。軸通部Ｃ１は、流路Ｌ１の断面方向に関して、弁３０を構成する軸部３２の周面に沿う形状、例えば、軸部３２が断面略真円形状とされている本形態においては、円弧状とされている。本形態において、軸通部Ｃ１は、相互に対向するように２つ備えられており、この２つで軸部３２を囲い込む状態になっている。これにより、軸部３２は、軸方向へ移動可能に支持される。以上の点において、弁支持具Ｃは、前述弁支持具Ａや弁支持具Ｂと同様であるが、相互に隣接する軸通部Ｃ１間の距離が相互に隣接する軸通部Ｂ１間の距離よりも更に短く、つまり軸通部Ｃ１は軸通部Ｂ１よりも中心角が更に大きな円弧状となっており、相互に隣接する軸通部Ｃ１同士が当接している。弁支持具の安定性という観点からは本形態の弁支持具Ｃが好ましいが、材料費の削減という観点からは相互に隣接する軸通部同士が当接していない前述した弁支持具Ａや弁支持具Ｂが推奨される。 (Second modification)
As shown in FIG.7 and FIG.8, the valve support C of this Embodiment is mainly comprised by the axial part C1, the transfer part C2, and the base C3. The shaft-passing portion C1 has a shape along the circumferential surface of the shaft portion 32 constituting the valve 30 with respect to the cross-sectional direction of the flow path L1, for example, in the present embodiment in which the shaft portion 32 has a substantially circular cross section. It is arcuate. In this embodiment, two shaft-passing portions C1 are provided so as to face each other, and the shaft portion 32 is enclosed by these two. Thereby, the axial part 32 is supported so that a movement to an axial direction is possible. In the above points, the valve support C is the same as the valve support A and the valve support B described above, but the distance between the adjacent shaft passing portions C1 is the distance between the adjacent shaft passing portions B1. Is shorter, that is, the shaft portion C1 has an arc shape with a larger central angle than the shaft portion B1, and the adjacent shaft portions C1 are in contact with each other. From the viewpoint of the stability of the valve support, the valve support C of the present embodiment is preferable, but from the viewpoint of reducing the material cost, the above-described valve support A and valve in which the adjacent shaft passing portions are not in contact with each other. Support B is recommended.

本形態においても、架渡し部Ｃ２は、軸通部Ｃ１の両端部Ｃ１ａからそれぞれ筒体１１の内周面１１ａまで延出しているが、本形態では直線状とされていない。また、基部Ｃ３は、相互に隣接する軸通部Ｃ１から延出する相互に隣接する架渡し部Ｃ２の先端部Ｃ２ａと繋がり、内周面１１ａに沿う形状、つまり内周面１１ａが断面略真円形状とされている本形態においては、円弧状とされている。このように架渡し部Ｃ２が軸通部Ｃ１と基部Ｃ３とに繋がることによって、軸通部Ｃ１が軸部３２から受けた力は、基部Ｃ３、更には内周面１１ａに伝わる。この軸部３２からの力がよりダイレクトに内周面１１ａに伝わるという観点からは、前述したように架渡し部Ｃ２は、流路Ｌ１の径方向に延出し、かつ直線状であるのが好ましいが、本形態のように径方向に延出せず、また、直線状でない形態とすることもできる。本形態においては、相互に隣接する架渡し部Ｃ２の基端部Ｃ２ｂ同士が当接しており、先端側は離れているため直線状となっていないが、基端部Ｃ２ｂ同士の当接によって、特にこの部分を接着剤による接着や溶接などによって接合することによって弁支持具Ｃに力が加わった際の歪みが抑制されるとの利点を有する。また、前述したように弁支持具Ｃの安定性という観点からは、基部Ｃ３の長さが長い方が好ましいが、他方、基部Ｃ３の長さが長くなると材料費や圧力損失も増加してしまう。そこで、これらのバランスという観点から、基部Ｃ３の長さは適宜設計することができ、図示例では前述した弁支持具Ａの基部Ａ３と同じとしている。   Also in this embodiment, the bridge portion C2 extends from the both end portions C1a of the shaft passing portion C1 to the inner peripheral surface 11a of the cylindrical body 11, but is not linear in this embodiment. The base portion C3 is connected to the distal end portion C2a of the adjacent crossing portions C2 extending from the mutually adjacent shaft passing portions C1, and the shape along the inner peripheral surface 11a, that is, the inner peripheral surface 11a is substantially true in cross section. In the present embodiment, which is circular, it has an arc shape. In this way, the connecting part C2 is connected to the shaft part C1 and the base part C3, whereby the force received by the shaft part C1 from the shaft part 32 is transmitted to the base part C3 and further to the inner peripheral surface 11a. From the viewpoint that the force from the shaft portion 32 is more directly transmitted to the inner peripheral surface 11a, it is preferable that the transfer portion C2 extends in the radial direction of the flow path L1 and is linear as described above. However, it does not extend in the radial direction as in the present embodiment, and may be a non-linear form. In this embodiment, the proximal end portions C2b of the bridge portions C2 adjacent to each other are in contact with each other, and the distal end side is separated so that it is not linear, but due to the contact between the proximal end portions C2b, In particular, there is an advantage that the distortion when a force is applied to the valve support C is suppressed by joining this portion by bonding with an adhesive or welding. Further, as described above, from the viewpoint of the stability of the valve support C, it is preferable that the length of the base C3 is longer. On the other hand, if the length of the base C3 is increased, the material cost and the pressure loss are also increased. . Therefore, from the viewpoint of these balances, the length of the base C3 can be designed as appropriate, and in the illustrated example, it is the same as the base A3 of the valve support A described above.

また、本実施の形態の弁支持具Ｃも、軸通部Ｃ１、架渡し部Ｃ２及び基部Ｃ３を、いずれも流路Ｌ１の断面方向が肉薄となる板状としている。これによる効果は、前述した弁支持具Ａの場合と同様である。   Further, in the valve support C of the present embodiment, the shaft passing portion C1, the bridge portion C2, and the base portion C3 are all plate-shaped so that the cross-sectional direction of the flow path L1 is thin. The effect by this is the same as that of the valve support A described above.

（第３の変形例）
図９及び図１０に示すように、本実施の形態の弁支持具Ｄは、軸通部Ｄ１と、架渡し部Ｄ２と、基部Ｄ３とで主に構成される。軸通部Ｄ１は、流路Ｌ１の断面方向に関して、弁３０を構成する軸部３２の周面に沿う形状、例えば、軸部３２が断面略真円形状とされている本形態においては、円弧状とされている。本形態において、軸通部Ｄ１は、相互に対向するように２つ備えられており、この２つで軸部３２を囲い込む状態になっている。これにより、軸部３２は、軸方向へ移動可能に支持される。以上の点において、弁支持具Ｄは、前述弁支持具Ａや弁支持具Ｂと同様であるが、相互に隣接する軸通部Ｄ１間の距離が相互に隣接する軸通部Ｂ１間の距離よりも更に短く、つまり軸通部Ｄ１は軸通部Ｂ１よりも中心角が更に大きな円弧状となっており、弁支持具Ｃの軸通部Ｃ１と同様に、相互に隣接する軸通部Ｄ１同士が当接している。これによる作用効果は、軸通部Ｃ１の場合と同様である。 (Third Modification)
As shown in FIGS. 9 and 10, the valve support D of the present embodiment is mainly configured by a shaft passing portion D <b> 1, a spanning portion D <b> 2, and a base portion D <b> 3. The shaft-passing portion D1 has a shape along the circumferential surface of the shaft portion 32 constituting the valve 30 with respect to the cross-sectional direction of the flow path L1, for example, in the present embodiment in which the shaft portion 32 has a substantially circular cross section. It is arcuate. In this embodiment, two shaft-passing portions D1 are provided so as to face each other, and the shaft portion 32 is enclosed by these two. Thereby, the axial part 32 is supported so that a movement to an axial direction is possible. In the above points, the valve support D is the same as the valve support A and the valve support B described above, but the distance between the adjacent shaft passing portions D1 is the distance between the adjacent shaft passing portions B1. Is shorter, that is, the shaft-passing portion D1 has an arc shape whose central angle is larger than that of the shaft-passing portion B1, and is similar to the shaft-passing portion C1 of the valve support C. They are in contact with each other. The effect by this is the same as that of the axial part C1.

本形態においても、架渡し部Ｄ２は、軸通部Ｄ１の両端部Ｄ１ａからそれぞれ筒体１１の内周面１１ａまで延出しているが、本形態では直線状とされていない。また、基部Ｄ３は、相互に隣接する軸通部Ｄ１から延出する相互に隣接する架渡し部Ｄ２の先端部Ｄ２ａと繋がり、内周面１１ａに沿う形状、つまり内周面１１ａが断面略真円形状とされている本形態においては、円弧状とされている。このように架渡し部Ｄ２が軸通部Ｄ１と基部Ｄ３とに繋がることによって、軸通部Ｄ１が軸部３２から受けた力は、基部Ｄ３、更には内周面１１ａに伝わる。この軸部３２からの力がよりダイレクトに内周面１１ａに伝わるという観点からは、前述したように架渡し部Ｄ２は、流路Ｌ１の径方向に延出し、かつ直線状であるのが好ましいが、本形態において、架渡し部Ｄ２は、径方向に延出する部位を有するものの直線状でない。具体的には、相互に隣接する架渡し部Ｄ２は、基端側が相互に当接し、この当接状態で径方向に延出するものの、途中で折れ曲がり、先端側Ｄ２ｂは径方向ではなく基部Ｄ３に沿う方向に延出しており、相互に当接していない。このように本形態の架渡し部Ｄ２は直線状となっていないが、軸部３２からの力がよりダイレクトに内周面１１ａに伝わるという点において直線状である形態と同等であり、架渡し部Ｄ２が直線状であること自体に意味があるのではないことを明らかしている。ただし、材料費の削減や圧力損失の低減という観点からは、先端側Ｄ２ｂを有しない弁支持具Ａの形態が推奨される。   Also in this embodiment, the bridge portion D2 extends from both end portions D1a of the shaft passing portion D1 to the inner peripheral surface 11a of the cylindrical body 11, but is not linear in this embodiment. Further, the base D3 is connected to the tip end D2a of the adjacent crossing part D2 extending from the mutually adjacent shaft passing parts D1, and the shape along the inner peripheral surface 11a, that is, the inner peripheral surface 11a is substantially true in cross section. In the present embodiment, which is circular, it has an arc shape. Thus, the connecting part D2 is connected to the shaft passing part D1 and the base part D3, whereby the force received by the shaft passing part D1 from the shaft part 32 is transmitted to the base D3 and further to the inner peripheral surface 11a. From the viewpoint that the force from the shaft portion 32 is more directly transmitted to the inner peripheral surface 11a, it is preferable that the transfer portion D2 extends in the radial direction of the flow path L1 and is linear as described above. However, in this embodiment, the bridge portion D2 has a portion extending in the radial direction but is not linear. Specifically, the bridging portions D2 adjacent to each other are in contact with each other at the base ends and extend in the radial direction in this contact state, but are bent in the middle, and the tip end D2b is not in the radial direction but the base portion D3. Extending in a direction along the lines and not in contact with each other. As described above, the bridge portion D2 of this embodiment is not linear, but is equivalent to the linear shape in that the force from the shaft portion 32 is more directly transmitted to the inner peripheral surface 11a. It is clear that the portion D2 is not meaningful in itself. However, the form of the valve support A that does not have the distal end side D2b is recommended from the viewpoint of reducing material costs and pressure loss.

本形態の弁支持具Ｄも、弁支持具Ｃと同様に、架渡し部Ｄ２同士の当接、あるいは接合によって弁支持具Ｄに力が加わった際の歪みが抑制されるとの利点を有する。また、前述したように弁支持具Ｄの安定性という観点からは、基部Ｄ３の長さが長い方が好ましいが、他方、基部Ｄ３の長さが長くなると材料費や圧力損失も増加してしまう。そこで、これらのバランスという観点から、基部Ｄ３の長さは適宜設計することができ、図示例では前述した弁支持具Ａの基部Ａ３と同じとしている。   Similarly to the valve support C, the valve support D of this embodiment also has an advantage that distortion when force is applied to the valve support D by contact or joining of the spanning portions D2 is suppressed. . Further, as described above, from the viewpoint of the stability of the valve support D, it is preferable that the length of the base portion D3 is longer. On the other hand, if the length of the base portion D3 is increased, the material cost and the pressure loss are also increased. . Therefore, from the viewpoint of these balances, the length of the base D3 can be designed as appropriate, and is the same as the base A3 of the valve support A described above in the illustrated example.

一方、本実施の形態の弁支持具Ｄも、軸通部Ｄ１、架渡し部Ｄ２及び基部Ｄ３を、いずれも流路Ｌ１の断面方向が肉薄となる板状としている。これによる効果は、前述した弁支持具Ａの場合と同様である。   On the other hand, also in the valve support D of the present embodiment, the shaft passing part D1, the spanning part D2, and the base part D3 are all plate-like in which the cross-sectional direction of the flow path L1 is thin. The effect by this is the same as that of the valve support A described above.

（第４の変形例）
図１１及び図１２に示すように、本実施の形態の弁支持具Ｅは、軸通部Ｅ１と、架渡し部Ｅ２と、基部Ｅ３とで主に構成される。軸通部Ｅ１は、流路Ｌ１の断面方向に関して、弁３０を構成する軸部３２の周面に沿う形状、例えば、軸部３２が断面略真円形状とされている本形態においては、円弧状とされている。本形態において、軸通部Ｅ１は、相互の離間距離が均等となるように３つ備えられており、この３つで軸部３２を囲い込む状態になっている。これにより、軸部３２は、軸方向へ移動可能に支持される。弁支持具Ｅは、軸通部Ｅ１が３つとされている点において弁支持具Ａと異なるが、相互に隣接する軸通部Ｅ１間の距離は同じとされている。結果、軸通部Ｅ１は、軸通部Ａ１よりも中心角が小さな円弧状となっている。このように本発明において、軸通部の数は特に限定されず、例えば、２つ、３つ、４つ又はそれ以上の複数とすることができるが、材料費の削減、圧力損失の低減、製造容易性という観点からは、その数が少ない方が好ましく、特に２つでも弁を十分に支持できることが知見されている。 (Fourth modification)
As shown in FIG.11 and FIG.12, the valve support E of this Embodiment is mainly comprised by the axial part E1, the transfer part E2, and the base E3. The shaft-passing portion E1 has a shape along the circumferential surface of the shaft portion 32 constituting the valve 30 with respect to the cross-sectional direction of the flow path L1, for example, in the present embodiment in which the shaft portion 32 has a substantially circular cross section. It is arcuate. In this embodiment, three shaft-passing portions E1 are provided so that the mutual separation distances are equal, and the shaft portion 32 is enclosed by these three. Thereby, the axial part 32 is supported so that a movement to an axial direction is possible. The valve support E is different from the valve support A in that the three shaft passing portions E1 are provided, but the distance between the shaft passing portions E1 adjacent to each other is the same. As a result, the shaft passing portion E1 has an arc shape having a smaller central angle than the shaft passing portion A1. Thus, in the present invention, the number of shaft-passing portions is not particularly limited, and may be, for example, two, three, four, or more, but it is possible to reduce material costs, pressure loss, From the viewpoint of manufacturability, it is preferable that the number is smaller, and it has been found that even two can sufficiently support the valve.

一方、本形態においても架渡し部Ｅ２は、弁支持具Ａと同様に、軸通部Ｅ１の両端部Ｅ１ａからそれぞれ筒体１１の内周面１１ａまで延出しており、本形態でも特に直線状とされている。また、基部Ｅ３は、相互に隣接する軸通部Ｅ１から延出する相互に隣接する架渡し部Ｅ２の先端部Ｅ２ａと繋がり、内周面１１ａに沿う形状、つまり内周面１１ａが断面略真円形状とされている本形態においては、円弧状とされている。このように架渡し部Ｅ２が軸通部Ｅ１と基部Ｅ３とに繋がることによって、軸通部Ｅ１が軸部３２から受けた力は、基部Ｅ３、更には内周面１１ａに伝わる。したがって、この軸部３２からの力がよりダイレクトに内周面１１ａに伝わるよう、架渡し部Ｅ２は、流路Ｌ１の径方向に延出し、特に直線状に延出する形態が好ましく、この形態を弁支持具Ｅは採用している。これによる作用効果は、弁支持具Ａにおけると同様である。   On the other hand, in this embodiment as well as the valve support A, the spanning portion E2 extends from both end portions E1a of the shaft passing portion E1 to the inner peripheral surface 11a of the cylindrical body 11, and in this embodiment as well, it is particularly linear. It is said that. The base E3 is connected to the tip E2a of the adjacent bridging part E2 extending from the mutually adjacent shafts E1, and the shape along the inner peripheral surface 11a, that is, the inner peripheral surface 11a is substantially true in cross section. In the present embodiment, which is circular, it has an arc shape. In this way, the connecting portion E2 is connected to the shaft portion E1 and the base portion E3, whereby the force received by the shaft portion E1 from the shaft portion 32 is transmitted to the base portion E3 and further to the inner peripheral surface 11a. Therefore, in order that the force from the shaft portion 32 is more directly transmitted to the inner peripheral surface 11a, the extending portion E2 is preferably extended in the radial direction of the flow path L1, and particularly preferably linearly extended. The valve support E is employed. The effect by this is the same as in the valve support A.

弁支持具Ｅの安定性という観点からは、弁支持具Ａと同様に、基部Ｅ３の長さが長い方が好ましい。ただし、前述したように、この長さは、材料費や圧力損失の問題と相反する側面を有することから、弁支持具Ａにおけるのと同様の観点で調節する必要があり、図示例では弁支持具Ａにおける基部Ａ３と同様の長さ、形状としている。   From the viewpoint of the stability of the valve support E, like the valve support A, the base E3 is preferably long. However, as described above, since this length has a side that is in conflict with the problem of material cost and pressure loss, it is necessary to adjust from the same viewpoint as in the valve support A. It has the same length and shape as the base A3 in the tool A.

また、本実施の形態の弁支持具Ｅも、軸通部Ｅ１、架渡し部Ｅ２及び基部Ｅ３が、いずれも流路Ｌ１の断面方向が肉薄となる板状とされている。これによる効果は、前述した弁支持具Ａの場合と同様である。   Also, in the valve support E of the present embodiment, the shaft passing portion E1, the spanning portion E2, and the base portion E3 are all plate-like in which the cross-sectional direction of the flow path L1 is thin. The effect by this is the same as that of the valve support A described above.

（第５の変形例）
図１３及び図１４に示すように、本実施の形態の弁支持具Ｆは、軸通部Ｆ１と、架渡し部Ｆ２と、基部Ｆ３とで主に構成される。軸通部Ｆ１は、流路Ｌ１の断面方向に関して、弁３０を構成する軸部３２の周面に沿う形状、例えば、軸部３２が断面略真円形状とされている本形態においては、円弧状とされている。本形態において、軸通部Ｆ１は、相互の離間距離が均等となるように４つ備えられており、この４つで軸部３２を囲い込む状態になっている。これにより、軸部３２は、軸方向へ移動可能に支持される。弁支持具Ｆは、軸通部Ｆ１が４つとされている点において、軸通部Ｅ１が３つとされている弁支持具Ｅを改良したものである。もっとも、軸通部Ｆ１は、軸通部Ｅ１よりも離間距離が短くなっており、その長さ、つまり中心角が、同じ円弧状となっている。 (Fifth modification)
As shown in FIG.13 and FIG.14, the valve support F of this Embodiment is mainly comprised by the axial part F1, the transfer part F2, and the base F3. The shaft passing portion F1 has a shape along the circumferential surface of the shaft portion 32 constituting the valve 30 with respect to the cross-sectional direction of the flow path L1, for example, in the present embodiment in which the shaft portion 32 has a substantially circular cross section. It is arcuate. In this embodiment, four shaft-passing portions F1 are provided so that the mutual separation distances are equal, and the shaft portion 32 is enclosed by these four. Thereby, the axial part 32 is supported so that a movement to an axial direction is possible. The valve support F is an improvement over the valve support E having three shaft-passing portions E1 in that four shaft-passing portions F1 are provided. However, the axial part F1 has a shorter separation distance than the axial part E1, and its length, that is, the central angle, has the same arc shape.

一方、本形態においても架渡し部Ｆ２は、弁支持具Ａや弁支持具Ｅと同様に、軸通部Ｆ１の両端部Ｆ１ａからそれぞれ筒体１１の内周面１１ａまで延出しており、本形態でも特に直線状とされている。また、基部Ｆ３は、相互に隣接する軸通部Ｆ１から延出する相互に隣接する架渡し部Ｆ２の先端部Ｆ２ａと繋がり、内周面１１ａに沿う形状、つまり内周面１１ａが断面略真円形状とされている本形態においては、円弧状とされている。このように架渡し部Ｆ２が軸通部Ｆ１と基部Ｆ３とに繋がることによって、軸通部Ｆ１が軸部３２から受けた力は、基部Ｆ３、更には内周面１１ａに伝わる。したがって、この軸部３２からの力がよりダイレクトに内周面１１ａに伝わるよう、架渡し部Ｆ２は、流路Ｌ１の径方向に延出し、特に直線状に延出する形態が好ましく、この形態を弁支持具Ｆも採用している。これによる作用効果は、弁支持具Ａや弁支持具Ｅにおけると同様である。   On the other hand, in this embodiment as well as the valve support A and the valve support E, the transfer portion F2 extends from the both ends F1a of the shaft passing portion F1 to the inner peripheral surface 11a of the cylindrical body 11, respectively. The form is also particularly straight. The base portion F3 is connected to the distal end portion F2a of the adjacent bridging portions F2 extending from the mutually adjacent shaft passing portions F1, and the shape along the inner peripheral surface 11a, that is, the inner peripheral surface 11a is substantially true in cross section. In the present embodiment, which is circular, it has an arc shape. Thus, the connecting part F2 is connected to the shaft part F1 and the base part F3, whereby the force received by the shaft part F1 from the shaft part 32 is transmitted to the base part F3 and further to the inner peripheral surface 11a. Therefore, in order that the force from the shaft portion 32 is more directly transmitted to the inner peripheral surface 11a, the bridge portion F2 preferably extends in the radial direction of the flow path L1, and particularly extends linearly. The valve support F is also adopted. The effect by this is the same as in the valve support A and the valve support E.

弁支持具Ｆの安定性という観点からは、弁支持具Ａや弁支持具Ｅと同様に、基部Ｆ３の長さが長い方が好ましい。ただし、前述したように、この長さは、材料費や圧力損失の問題と相反する側面を有することから、弁支持具Ａや弁支持具Ｅにおけるのと同様の観点で調節する必要がある。本形態では、軸通部Ｆ１の離間距離が短くなっており、これに連動して基部Ｆ３の長さも短くなっている。ただし、基部Ｆ３の数が４つに増えているため、安定性に劣ることはない。   From the viewpoint of the stability of the valve support F, like the valve support A and the valve support E, it is preferable that the length of the base F3 is longer. However, as described above, this length has a side face that conflicts with the problem of material cost and pressure loss, and therefore, it is necessary to adjust from the same viewpoint as in the valve support A and the valve support E. In this embodiment, the separation distance of the shaft passing portion F1 is shortened, and the length of the base portion F3 is shortened in conjunction with this. However, since the number of base F3 is increased to four, stability is not inferior.

また、本実施の形態の弁支持具Ｆも、軸通部Ｆ１、架渡し部Ｆ２及び基部Ｆ３が、いずれも流路Ｌ１の断面方向が肉薄となる板状とされている。これによる効果は、前述した弁支持具Ａなどの場合と同様である。   Also, in the valve support F of the present embodiment, the shaft passing portion F1, the spanning portion F2, and the base portion F3 are all plate-like in which the cross-sectional direction of the flow path L1 is thin. The effect by this is the same as that of the valve support A etc. mentioned above.

（第６の変形例）
図１５及び図１６に示すように、本実施の形態の弁支持具Ｇは、弁支持具Ａを変形したものであり、弁支持具Ａとともに、内円筒Ｇ１を有する。この内円筒Ｇ１は、軸通部Ａ１に内接し、かつ弁３０を構成する軸部３２に外接する。より詳細には、内円筒Ｇ１は、流路Ｌ１の断面方向に関して、軸部３２の周面及び軸通部Ａ１の内周面に沿う形状、例えば、軸部３２が断面略真円形状とされ、かつ軸通部Ａ１が円弧状とされている本形態においては、真円形状とされている。このように、本形態においては、軸通部Ａ１が内円筒Ｇ１を介して間接的に、軸部３２を囲い込み、支持することになる。 (Sixth Modification)
As shown in FIGS. 15 and 16, the valve support G of the present embodiment is a modification of the valve support A, and has an inner cylinder G1 together with the valve support A. The inner cylinder G1 is inscribed in the shaft passing part A1 and circumscribed in the shaft part 32 constituting the valve 30. More specifically, the inner cylinder G1 has a shape along the circumferential surface of the shaft portion 32 and the inner circumferential surface of the shaft passing portion A1 with respect to the cross-sectional direction of the flow path L1, for example, the shaft portion 32 has a substantially circular cross section. And in this form by which axial part A1 is made into circular arc shape, it is set as perfect circle shape. As described above, in this embodiment, the shaft passing portion A1 indirectly surrounds and supports the shaft portion 32 via the inner cylinder G1.

一方、内円筒Ｇ１は、図１６に示すように、流路Ｌ１の流れ方向に関して、弁支持具Ａよりも長くなっており、軸部３２を支持するについての安定性を向上させている。この安定性は、例えば、前述弁支持具Ａ単体の形態において、弁支持具Ａの長さＶ（図４参照）を長くすることでも達成することができるが、本形態のように、内円筒Ｇ１を設け、この内円筒Ｇ１の長さのみを長くした方が材料費を削減できる可能性がある。ただし、弁支持具Ａや内円筒Ｇ１の材質や流路Ｌ１の流れ方向に関する長さ等によっては、内円筒Ｇ１を設けず、弁支持具Ａ単体としその長さを調節した方が材料費を削減できる場合もある。しかも、内円筒Ｇ１を設けない方が、圧力損失が低減され、また、製造も容易となる。したがって、総合的には、前述した弁支持具Ａ単体の形態を推奨する。   On the other hand, as shown in FIG. 16, the inner cylinder G1 is longer than the valve support A with respect to the flow direction of the flow path L1, and improves the stability of supporting the shaft portion 32. This stability can be achieved, for example, by increasing the length V (see FIG. 4) of the valve support A in the form of the valve support A alone, but the inner cylinder as in the present embodiment. If G1 is provided and only the length of the inner cylinder G1 is increased, the material cost may be reduced. However, depending on the material of the valve support A and the inner cylinder G1, the length of the flow path L1 in the flow direction, etc., it is more expensive to adjust the length of the valve support A alone without providing the inner cylinder G1. In some cases, it can be reduced. In addition, if the inner cylinder G1 is not provided, the pressure loss is reduced and the manufacture is facilitated. Therefore, generally, the form of the above-described valve support A alone is recommended.

本形態において、弁支持具Ａと内円筒Ｇ１を一体化させる方法は、特に限定されず、例えば、接着剤による接着、溶接などによることができる。   In this embodiment, the method for integrating the valve support A and the inner cylinder G1 is not particularly limited, and for example, adhesion by an adhesive, welding, or the like can be used.

なお、内円筒Ｇ１は、円筒状であり、したがって流路Ｌ１の断面方向が肉薄となる（曲）板状である。   The inner cylinder G1 has a cylindrical shape, and thus has a (curved) plate shape in which the cross-sectional direction of the flow path L1 is thin.

（第７の変形例）
図１７及び図１８に示すように、本実施の形態の弁支持具Ｈも、弁支持具Ａを変形したものであり、弁支持具Ａとともに、外円筒Ｈ１を有する。この外円筒Ｈ１は、基部Ａ３に外接し、かつ筒体１１の内周面１１ａに内接する。より詳細には、外円筒Ｈ１は、流路Ｌ１の断面方向に関して、基部Ａ３の外周面及び筒体１１の内周面１１ａに沿う形状、例えば、基部Ａ３が円弧状とされ、かつ筒体１１の内周面１１ａが断面略真円形状とされている本形態においては、真円形状とされている。このように、本形態においては、基部Ａ３が外円筒Ｈ１を介して間接的に、筒体１１の内周面１１ａに沿っている。 (Seventh Modification)
As shown in FIGS. 17 and 18, the valve support H of the present embodiment is also a modification of the valve support A, and has an outer cylinder H <b> 1 together with the valve support A. The outer cylinder H1 circumscribes the base A3 and inscribes the inner peripheral surface 11a of the cylindrical body 11. More specifically, the outer cylinder H1 has a shape along the outer peripheral surface of the base A3 and the inner peripheral surface 11a of the cylinder 11 with respect to the cross-sectional direction of the flow path L1, for example, the base A3 has an arc shape, and the cylinder 11 In the present embodiment in which the inner peripheral surface 11a has a substantially circular cross section, the inner peripheral surface 11a has a perfect circular shape. Thus, in this embodiment, the base A3 is indirectly along the inner peripheral surface 11a of the cylindrical body 11 via the outer cylinder H1.

一方、外円筒Ｈ１は、図１８に示すように、流路Ｌ１の流れ方向に関して、弁支持具Ａよりも長くなっており、筒体１１の内周面１１ａに支持されるについての安定性を向上させている。この安定性は、例えば、前述弁支持具Ａ単体の形態において、弁支持具Ａの長さＶ（図４参照）を長くすることでも達成することができるが、本形態のように、外円筒Ｈ１を設け、この外円筒Ｈ１の長さのみを長くした方が材料費を削減できる可能性がある。ただし、弁支持具Ａや外円筒Ｈ１の材質や流路Ｌ１の流れ方向に関する長さ等によっては、外円筒Ｈ１を設けず、弁支持具Ａ単体としその長さを調節した方が材料費を削減できる場合もある。しかも、外円筒Ｈ１を設けない方が、圧力損失が低減され、また、製造も容易となる。したがって、総合的には、前述した弁支持具Ａ単体の形態を推奨する。   On the other hand, as shown in FIG. 18, the outer cylinder H1 is longer than the valve support A with respect to the flow direction of the flow path L1, and is stable with respect to being supported by the inner peripheral surface 11a of the cylindrical body 11. It is improving. This stability can be achieved, for example, by increasing the length V (see FIG. 4) of the valve support A in the form of the valve support A alone, but the outer cylinder as in the present embodiment. If H1 is provided and only the length of the outer cylinder H1 is increased, the material cost may be reduced. However, depending on the material of the valve support A and the outer cylinder H1, the length of the flow path L1 in the flow direction, etc., it is more costly to adjust the length of the valve support A alone without providing the outer cylinder H1. In some cases, it can be reduced. Moreover, the pressure loss is reduced and the manufacture is facilitated when the outer cylinder H1 is not provided. Therefore, generally, the form of the above-described valve support A alone is recommended.

本形態において、弁支持具Ａと外円筒Ｈ１を一体化させる方法は、特に限定されず、例えば、接着剤による接着、溶接などによることができる。   In the present embodiment, the method for integrating the valve support A and the outer cylinder H1 is not particularly limited, and for example, bonding with an adhesive, welding, or the like can be used.

なお、外円筒Ｈ１は、円筒状であり、したがって流路Ｌ１の断面方向が肉薄となる（曲）板状である。   The outer cylinder H1 has a cylindrical shape, and thus has a (curved) plate shape in which the cross-sectional direction of the flow path L1 is thin.

〔その他〕
以上、本形態の弁支持具Ａ〜Ｈの素材は、特に限定されず、例えば、ＳＵＳ３０３、３０４などを用いることができる。 [Others]
As described above, the material of the valve supports A to H of the present embodiment is not particularly limited, and for example, SUS303, 304 or the like can be used.

本発明は、例えば、カップラーなどといわれる弁付管継手及びこの弁付管継手に用いる弁支持具として、適用可能である。   The present invention is applicable, for example, as a valve-equipped pipe joint called a coupler and a valve support used for the valve-equipped pipe joint.

実施の形態に係る弁付管継手の連結前の状態を示す半断面図である。It is a half sectional view showing the state before connection of the pipe joint with valve concerning an embodiment. 実施の形態に係る弁付管継手の連結後の状態を示す半断面図である。It is a half sectional view showing the state after connection of the pipe joint with valve concerning an embodiment. 実施の形態に係る弁支持具を示す平面図である。It is a top view which shows the valve support tool which concerns on embodiment. 実施の形態に係る弁支持具を示す正面図である。It is a front view which shows the valve support tool which concerns on embodiment. 第１の変形例に係る弁支持具を示す平面図である。It is a top view which shows the valve support tool which concerns on a 1st modification. 第１の変形例に係る弁支持具を示す正面図である。It is a front view which shows the valve support tool which concerns on a 1st modification. 第２の変形例に係る弁支持具を示す平面図である。It is a top view which shows the valve support tool which concerns on a 2nd modification. 第２の変形例に係る弁支持具を示す正面図である。It is a front view which shows the valve support tool which concerns on a 2nd modification. 第３の変形例に係る弁支持具を示す平面図である。It is a top view which shows the valve support tool which concerns on a 3rd modification. 第３の変形例に係る弁支持具を示す正面図である。It is a front view which shows the valve support tool which concerns on a 3rd modification. 第４の変形例に係る弁支持具を示す平面図である。It is a top view which shows the valve support tool which concerns on a 4th modification. 第４の変形例に係る弁支持具を示す正面図である。It is a front view which shows the valve support tool which concerns on a 4th modification. 第５の変形例に係る弁支持具を示す平面図である。It is a top view which shows the valve support tool which concerns on a 5th modification. 第５の変形例に係る弁支持具を示す正面図である。It is a front view which shows the valve support tool which concerns on a 5th modification. 第６の変形例に係る弁支持具を示す平面図である。It is a top view which shows the valve support tool which concerns on a 6th modification. 第６の変形例に係る弁支持具を示す正面図である。It is a front view which shows the valve support tool which concerns on a 6th modification. 第７の変形例に係る弁支持具を示す平面図である。It is a top view which shows the valve support tool which concerns on a 7th modification. 第７の変形例に係る弁支持具を示す正面図である。It is a front view which shows the valve support tool which concerns on a 7th modification. 従来の形態に係る弁付管継手の連結前の状態を示す半断面図である。It is a half sectional view showing the state before connection of the pipe joint with valve concerning the conventional form. 従来の形態に係る弁付管継手の連結後の状態を示す半断面図である。It is a half sectional view showing the state after connection of the pipe joint with valve concerning the conventional form. 従来の形態に係る弁支持具を示す平面図である。It is a top view which shows the valve support tool which concerns on the conventional form. 従来の形態に係る弁支持具を示す半断面図である。It is a half sectional view showing a valve support according to a conventional form. 従来の別の形態に係る弁支持具を示す平面図である。It is a top view which shows the valve support tool which concerns on another conventional form. 従来の別の形態に係る弁支持具を示す半断面図である。It is a half sectional view showing a conventional valve support according to another form.

符号の説明Explanation of symbols

１，１００…弁付の管継手、２，１１０…雄継手、３，１２０…雌継手、４，５…シール材、６…整流リング、８…付勢部材、９…掛止リング、１１…雄筒体、１２，２２…縮径部、２１…雌筒体、３０…弁、３１…頭部、３２…軸部、４０，５０…弁支持具、４１…第１の円筒部、４２…架橋部、４３…第２の円筒部、５１…円筒部、５２…突部、７０…連結機構、７１…連結筒体、７２…付勢部材、７３…突部材、７５…ボール部材、７６…孔、７７…凹部、Ａ〜Ｈ…弁支持具、Ａ１〜Ｈ１…軸通部、Ａ２〜Ｈ２…架渡し部、Ａ３〜Ｈ３…基部、Ｌ１，Ｌ２…流路。   DESCRIPTION OF SYMBOLS 1,100 ... Pipe joint with a valve, 2,110 ... Male joint, 3,120 ... Female joint, 4,5 ... Sealing material, 6 ... Rectification ring, 8 ... Biasing member, 9 ... Stop ring, 11 ... Male cylindrical body, 12, 22 ... Reduced diameter part, 21 ... Female cylindrical body, 30 ... Valve, 31 ... Head, 32 ... Shaft part, 40, 50 ... Valve support, 41 ... First cylindrical part, 42 ... Cross-linking part, 43 ... second cylindrical part, 51 ... cylindrical part, 52 ... projecting part, 70 ... connecting mechanism, 71 ... connecting cylindrical body, 72 ... biasing member, 73 ... projecting member, 75 ... ball member, 76 ... A hole, 77 ... a recessed part, AH ... a valve support, A1-H1 ... a shaft passing part, A2-H2 ... a bridging part, A3-H3 ... a base, L1, L2 ... a flow path.

Claims (3)

内周面が流路を形成する雄筒体と、内周面が流路を形成し、かつ前記雄筒体の先端部が嵌入される雌筒体と、を有し、
前記両流路それぞれに、頭部及びこの頭部から他方の筒体とは反対側に延出する前記頭部より小径の軸部を有する弁と、前記筒体に固定され、かつ前記軸部を軸方向に移動可能に支持する弁支持具と、この弁支持具及び前記頭部の間に介在されてこの頭部を前記他方の筒体側に付勢する付勢部材と、が備えられ、
前記嵌入が外れた状態においては、前記頭部が前記他方の筒体側に付勢されて前記内周面に設けられた縮径部と当接し、この当接によって前記流路が塞がれ、前記嵌入の状態においては、前記両頭部が相互に押し合い、この押し合いにより前記両頭部が前記縮径部から離れて前記両流路が連通する、構成とされた弁付管継手であって、
前記弁支持具は、前記軸部の周面に沿い、かつ複数で前記軸部を囲い込む軸通部と、これら軸通部の両端部からそれぞれ前記内周面まで延出する架渡し部と、相互に隣接する軸通部から延出する相互に隣接する架渡し部の両先端部と繋がり、かつ前記内周面に沿う基部と、を有するとともに、
前記軸通部、前記架渡し部及び前記基部が、いずれも前記流路の断面方向が肉薄となる板状である、
ことを特徴とする弁付管継手。 A male cylinder whose inner peripheral surface forms a flow path, and a female cylinder whose inner peripheral surface forms a flow path and into which a tip of the male cylinder is fitted,
A valve having a head portion and a shaft portion having a smaller diameter than the head portion extending from the head portion to the opposite side to the other tubular body, the shaft portion being fixed to the tubular body, and the shaft portion. And a biasing member that is interposed between the valve support and the head, and biases the head toward the other cylindrical body.
In the disengaged state, the head is urged toward the other cylindrical body and comes into contact with a reduced diameter portion provided on the inner peripheral surface, and the flow path is closed by this contact, In the inserted state, the both heads are pressed against each other, the both heads are separated from the reduced diameter portion by the pressing, and the both flow passages communicate with each other.
The valve support includes a plurality of shaft-passing portions that surround the shaft portion along a peripheral surface of the shaft portion, and a bridge portion that extends from both ends of the shaft-passing portion to the inner peripheral surface, respectively. A base portion that extends from the mutually adjacent shaft passing portions and is connected to both distal end portions of the adjacent bridging portions and extends along the inner peripheral surface;
The shaft passing part, the bridge part, and the base part are all plate-like in which the cross-sectional direction of the flow path is thin.
A valve-equipped fitting. 内周面が流路を形成する雄筒体と、内周面が流路を形成し、かつ前記雄筒体の先端部が嵌入される雌筒体と、を有し、
前記両流路それぞれに、頭部及びこの頭部から他方の筒体とは反対側に延出する前記頭部より小径の軸部を有する弁と、前記頭部の前記他方の筒体とは反対側に配置されてこの頭部を前記他方の筒体側に付勢する付勢部材と、が備えられ、
前記嵌入が外れた状態においては、前記頭部が前記他方の筒体側に付勢されて前記内周面に設けられた縮径部と当接し、この当接によって前記流路が塞がれ、前記嵌入の状態においては、前記両頭部が相互に押し合い、この押し合いにより前記両頭部が前記縮径部から離れて前記両流路が連通する、構成とされた弁付管継手に用いられるものであり、
前記頭部との間に前記付勢部材が介在された状態で前記筒体に固定され、かつ前記軸部を軸方向に移動可能に支持する前記弁の支持具であって、
前記軸部の周面に沿い、かつ複数で前記軸部を囲い込む軸通部と、これら軸通部の両端部からそれぞれ前記内周面まで延出する架渡し部と、相互に隣接する軸通部から延出する相互に隣接する架渡し部の両先端部と繋がり、かつ前記内周面に沿う基部と、を有するとともに、
前記軸通部、前記架渡し部及び前記基部が、いずれも前記流路の断面方向が肉薄となる板状である、
ことを特徴とする弁付管継手の弁支持具。 A male cylinder whose inner peripheral surface forms a flow path, and a female cylinder whose inner peripheral surface forms a flow path and into which a tip of the male cylinder is fitted,
In each of the two flow paths, a head and a valve having a shaft portion having a smaller diameter than the head extending from the head to the opposite side of the other cylinder, and the other cylinder of the head An urging member that is arranged on the opposite side and urges the head toward the other cylindrical body,
In the disengaged state, the head is urged toward the other cylindrical body and comes into contact with a reduced diameter portion provided on the inner peripheral surface, and the flow path is closed by this contact, In the inserted state, the both heads are pressed against each other, and by this pressing, the both heads are separated from the reduced diameter portion and the both flow paths communicate with each other. Yes,
The valve support that is fixed to the cylinder in a state where the biasing member is interposed between the head and the head and that supports the shaft portion so as to be movable in the axial direction.
A plurality of shaft-passing portions that surround the shaft portion along the peripheral surface of the shaft portion, a bridge portion that extends from both ends of the shaft-passing portion to the inner peripheral surface, and shafts adjacent to each other And having a base portion that is connected to both front end portions of the crossing portions adjacent to each other extending from the passage portion and that extends along the inner peripheral surface,
The shaft passing part, the bridge part, and the base part are all plate-like in which the cross-sectional direction of the flow path is thin.
A valve support for a valve-equipped pipe joint. 前記軸通部は２つで、一の前記基部と繋がる前記架渡し部が中心角１５〜１８０°の角度をもって前記流路の径方向に延出したものである、請求項２記載の弁付管継手の弁支持具。   3. The valve attachment according to claim 2, wherein the number of the shaft passing portions is two, and the bridge portion connected to one base portion extends in a radial direction of the flow path with an angle of 15 to 180 ° in the center. Valve support for pipe fittings.
JP2007166322A 2007-06-25 2007-06-25 Pipe fitting with valve, and valve supporter for the same Pending JP2009002483A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009008161A (en) * 2007-06-28 2009-01-15 Bridgestone Flowtech Corp Pipe joint with valve, and pipe support member of pipe joint with valve
JP2011179631A (en) * 2010-03-03 2011-09-15 Bridgestone Corp Pipe joint with valve and valve support for the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60500423A (en) * 1983-01-19 1985-03-28 スウエイジロツク　コムパニ− cutlet spring
JPH08320092A (en) * 1995-05-24 1996-12-03 Bridgestone Flowtech Corp Coupler capable of decreasing pressure loss

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60500423A (en) * 1983-01-19 1985-03-28 スウエイジロツク　コムパニ− cutlet spring
JPH08320092A (en) * 1995-05-24 1996-12-03 Bridgestone Flowtech Corp Coupler capable of decreasing pressure loss

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009008161A (en) * 2007-06-28 2009-01-15 Bridgestone Flowtech Corp Pipe joint with valve, and pipe support member of pipe joint with valve
JP2011179631A (en) * 2010-03-03 2011-09-15 Bridgestone Corp Pipe joint with valve and valve support for the same

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