JP4805718B2 - Test plug - Google Patents

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JP4805718B2
JP4805718B2 JP2006118854A JP2006118854A JP4805718B2 JP 4805718 B2 JP4805718 B2 JP 4805718B2 JP 2006118854 A JP2006118854 A JP 2006118854A JP 2006118854 A JP2006118854 A JP 2006118854A JP 4805718 B2 JP4805718 B2 JP 4805718B2
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peripheral surface
plug
test plug
outer peripheral
test
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JP2007292534A (en
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範八 松井
徳智 松井
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範八 松井
徳智 松井
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Description

この発明は、一般的にはテストプラグに関し、特定的には、水道等の配管などを設置する際に、配管内圧の漏洩をテストするために、配管に種々の機器を取付ける前に、配管の機器取付端部にねじ込みで固定することによって機器取付端部を一時的に閉塞するための脱着可能なテストプラグに関するものである。   The present invention generally relates to test plugs, and more specifically, before installing various devices in the piping in order to test the leakage of the internal pressure of the piping when installing piping such as water supply. The present invention relates to a detachable test plug for temporarily closing a device mounting end by screwing and fixing to the device mounting end.

水道等の配管などを設置する際に、たとえば、建物内の給水管の設置工事においては、配管を完了した後に水圧テストを行い、配管内圧の漏洩を調査し、あるいは漏水箇所を発見し、修理する。このとき、配管に種々の機器を取付ける前に、配管の機器取付端部にねじ込みで固定することによって機器取付端部を一時的に閉塞する必要がある。そこで、機器取付端部を一時的に閉塞するために脱着可能なテストプラグが用いられる。   When installing pipes such as water supply, for example, in the construction work of water supply pipes in buildings, after completing the pipes, perform a water pressure test, investigate leaks in the pipe internal pressure, or discover leak points and repair them. To do. At this time, before attaching various devices to the piping, it is necessary to temporarily close the device mounting end by screwing and fixing to the device mounting end of the piping. Therefore, a detachable test plug is used to temporarily close the device mounting end.

従来から、テストプラグを配管の機器取付端部にねじ込みで固定する際には、このねじ込まれた部分から圧力が漏洩するのを防止するために、テストプラグの先端のネジ部にシールテープなどのシール材を巻き付ける等の前作業をテスト実施前に行う必要がある。そして、テストプラグを配管の機器取付端部にねじ込みで固定した状態でテストを行った後、機器取付端部からテストプラグを取外し、蛇口等の種々の機器を取付けて作業が終了する。   Conventionally, when fixing the test plug to the equipment mounting end of the pipe by screwing, in order to prevent the pressure from leaking from the screwed part, a seal tape or the like is applied to the screw part at the tip of the test plug. Pre-work such as wrapping the seal material needs to be done before the test. Then, after performing the test in a state where the test plug is screwed and fixed to the equipment attachment end of the pipe, the test plug is removed from the equipment attachment end, and various equipment such as a faucet is attached to complete the work.

また、配管作業が完了した後、機器取付端部から取り外したテストプラグを再利用するためにはネジ部に巻き付けられたシールテープを除去する必要がある。   In addition, after the piping work is completed, it is necessary to remove the seal tape wound around the screw portion in order to reuse the test plug removed from the device mounting end.

シールテープを巻き付けるなどの面倒な前作業を不要とするためのテストプラグの構造が、たとえば、特開2004−325283号公報(特許文献1)に記載されている。このテストプラグの構造においては、ネジ込み端部の長手方向に沿い、その基端より、基端と先端との中途位置までの間に環状凹所を形成するとともにネジ込み端部の先端オスネジ部を残し、環状凹所に弾性変形可能な柔軟材を固着するとともに柔軟材の外周に、先端オスネジ部と整合して先端オスネジ部とともにネジ込み端部のオスネジ部をなす基端オスネジ部を形成している。
特開2004−325283号公報
For example, Japanese Patent Application Laid-Open No. 2004-325283 (Patent Document 1) describes a structure of a test plug for eliminating the troublesome prior work such as winding a seal tape. In the structure of this test plug, an annular recess is formed along the longitudinal direction of the screwed end portion from the base end to the middle position between the base end and the tip, and the tip male screw portion of the screwed end portion A flexible male material that can be elastically deformed is fixed to the annular recess, and a proximal male screw part that is aligned with the male screw part of the tip and forms the male screw part of the screwed-in end together with the male screw part is formed on the outer periphery of the flexible material. ing.
JP 2004-325283 A

しかしながら、特開2004−325283号公報(特許文献1)に記載されたテストプラグの構造は複雑であるので、製造コストが高くなる。   However, since the structure of the test plug described in Japanese Patent Application Laid-Open No. 2004-325283 (Patent Document 1) is complicated, the manufacturing cost increases.

そこで、この発明の目的は、圧力が漏洩するのを防止するためにネジ部にシールテープなどのシール材を巻き付ける等の前作業をテスト実施前に行う必要をなくすることができるとともに、繰り返し利用することができ、かつ、簡単な構成のテストプラグを提供することである。   Therefore, the object of the present invention is to eliminate the need to perform a pre-work such as wrapping a seal material such as a seal tape around the screw portion before the test is performed in order to prevent the pressure from leaking, and to repeatedly use it. It is possible to provide a test plug with a simple configuration.

この発明に従ったテストプラグは、配管の機器取付端部にねじ込みで固定することによって機器取付端部を一時的に閉塞するために脱着可能なテストプラグであって、合成樹脂から形成された栓本体を備える。栓本体は、先端部と、この先端部よりも基部側に連続して形成され、かつ、機器取付端部の雌ネジ部に螺合する雄ネジ部が外周に形成されたネジ部とを含む。このテストプラグは、栓本体の先端部の外周面を被覆し、弾性変形可能な材料からなる筒状先端部材をさらに備える。筒状先端部材は、ほぼ円柱状に形成された外周面と、この外周面に連続して形成された端面とを有する。栓本体の先端部は、筒状先端部材の内径よりも大きな外径を有する先端縁部を含む。 Test plug in accordance with the inventions is a test plug detachable to temporarily close the device mounting end by fixing by screwing to the device attachment end of the pipe, which is formed of a synthetic resin A plug body is provided. The plug body includes a distal end portion and a screw portion formed continuously on the base side from the distal end portion and having a male screw portion formed on the outer periphery thereof and screwed into the female screw portion of the device mounting end portion. . This test plug further includes a cylindrical tip member made of an elastically deformable material that covers the outer peripheral surface of the tip portion of the plug body. The cylindrical tip member has an outer peripheral surface formed in a substantially columnar shape and an end surface formed continuously on the outer peripheral surface. The distal end portion of the plug body includes a distal end edge portion having an outer diameter larger than the inner diameter of the cylindrical distal end member.

この発明に従ったテストプラグにおいては、栓本体のネジ部が配管の機器取付端部の雌ネジ部にねじ込まれることによってテストプラグが機器取付端部に固定されるとともに、筒状先端部材が、上記のねじ込まれた部分から圧力が漏洩するのを防止する役割を果たす。筒状先端部材における外周面または端面の少なくともいずれか一つの面が機器取付端部の配管の内周面に接触することができる。このとき、筒状先端部材は弾性変形可能な材料から形成されているので、筒状先端部材は機器取付端部の配管の内周面の形状に応じて弾性変形することができる。すなわち、筒状先端部材における外周面または端面の少なくともいずれか一つの面が機器取付端部の配管の内周面に密着するように、筒状先端部材は機器取付端部の配管の内周面の形状に応じて弾性変形することができる。したがって、ネジ部にシールテープなどのシール材を巻き付ける等の前作業をテスト実施前に行うことなく、圧力が漏洩するのを防止することができる。なお、この発明のもう一つの局面に従ったテストプラグにおいては、栓本体は、相対的に軟質の合成樹脂ではなく、相対的に硬質の合成樹脂から形成されるのが好ましい。 In testing plug in accordance with the inventions, with the test plug by the screw portion of the plug body is screwed into the female threaded portion of the device mounting end of the pipe is fixed to the device mounting end, the tubular tip member , It plays a role of preventing pressure from leaking from the screwed-in part. At least one of the outer peripheral surface and the end surface of the cylindrical tip member can be in contact with the inner peripheral surface of the pipe at the device mounting end. At this time, since the cylindrical tip member is made of an elastically deformable material, the cylindrical tip member can be elastically deformed in accordance with the shape of the inner peripheral surface of the pipe at the device mounting end. That is, the cylindrical tip member is the inner peripheral surface of the equipment mounting end pipe so that at least one of the outer peripheral face or end face of the cylindrical tip member is in close contact with the inner peripheral face of the equipment mounting end pipe It can be elastically deformed according to the shape. Accordingly, it is possible to prevent the pressure from leaking without performing a pre-work such as wrapping a sealing material such as a seal tape around the screw portion before performing the test. In the test plug according to another aspect of the present invention, the plug body is preferably formed of a relatively hard synthetic resin instead of a relatively soft synthetic resin.

また、この発明に従ったテストプラグにおいては、栓本体のネジ部よりも先端側に上記の形状の筒状先端部材を配置するだけで、圧力が漏洩するのを防止することができる。したがって、簡単な構成のテストプラグを提供することができる。 In the test plug in accordance with the inventions, the distally than the threaded portion of the plug body simply place the tubular tip member of the shape described above, can pressure to prevent the leaking. Therefore, a test plug having a simple configuration can be provided.

さらに、この発明に従ったテストプラグにおいては、従来のように、配管作業が完了した後、機器取付端部から取り外したテストプラグを再利用するためにはネジ部に巻き付けられたシールテープを除去する必要がないので、テストプラグを繰り返し利用することができる。 Further, in the test plug in accordance with the inventions, as in the prior art, after the piping work has been completed, the seal tape wound around the threaded portion in order to reuse the test plug has been removed from the device mounting end Since there is no need to remove, the test plug can be used repeatedly.

なお、この発明に従ったテストプラグにおいては、ネジ部にシールテープなどのシール材を巻き付ける等の前作業をテスト実施前に行わないので、スパナやレンチ等の工具を用いないで、手で締め付けることによって、栓本体のネジ部を配管の機器取付端部の雌ネジ部にねじ込むことができる。 In the test plug according to this inventions does not perform work before such winding the sealing member such as sealing tape before testing conducted in the threaded portion, without the use of tools as a spanner or wrench, hand By tightening, the screw portion of the plug body can be screwed into the female screw portion of the equipment mounting end of the pipe.

この発明に従ったテストプラグにおいては、筒状先端部材の外周面と端面との間には、テーパー面が形成されていることが好ましい。 In testing plug in accordance with the inventions, between the outer peripheral surface and the end face of the tubular tip member, it is preferred that the tapered surface is formed.

この場合、筒状先端部材における外周面、端面だけでなく、テーパー面も機器取付端部の配管の内周面に接触することができる。このとき、筒状先端部材は弾性変形可能な材料から形成されているので、筒状先端部材は機器取付端部の配管の内周面の形状に応じて弾性変形することができる。   In this case, not only the outer peripheral surface and end surface of the cylindrical tip member, but also the tapered surface can come into contact with the inner peripheral surface of the pipe at the device mounting end. At this time, since the cylindrical tip member is made of an elastically deformable material, the cylindrical tip member can be elastically deformed in accordance with the shape of the inner peripheral surface of the pipe at the device mounting end.

また、この発明に従ったテストプラグにおいては、筒状先端部材の外周面は、先端側に向かうに従って外径が大きくなるように形成されていることが好ましい。 In the test plug in accordance with the inventions, the outer peripheral surface of the tubular tip member is preferably formed so that the outer diameter increases toward the distal end side.

この場合、筒状先端部材における外周面または端面の少なくともいずれか一つの面が機器取付端部の配管の内周面により強固に密着するように、筒状先端部材は機器取付端部の配管の内周面の形状に応じて弾性変形することができるだけでなく、テストプラグを機器取付端部から取り外す際に、筒状先端部材が機器取付端部の配管の内周面に引っ掛かって栓本体の先端部の外周面から外れることがないようにすることができる。   In this case, the cylindrical tip member is connected to the inner peripheral surface of the equipment mounting end pipe so that at least one of the outer peripheral surface and the end face of the cylindrical tip member is more closely attached. Not only can it be elastically deformed according to the shape of the inner peripheral surface, but when the test plug is removed from the device mounting end, the cylindrical tip member is caught on the inner peripheral surface of the piping at the device mounting end and the plug body It can be prevented from coming off from the outer peripheral surface of the tip.

さらに、この発明に従ったテストプラグは、栓本体が、基部側に形成された把持部を含み、さらに、ネジ部と把持部との間に位置する栓本体の外周面を被覆し、弾性発泡体からなる筒状部材を備えることが好ましい。 Furthermore, the test plug according to this inventions, the plug body comprises a grip portion formed on the base side, further, to cover the outer peripheral surface of the plug body being situated between the grip portion threaded portion, the elastic It is preferable to provide a cylindrical member made of a foam.

この場合、栓本体のネジ部を配管の機器取付端部の雌ネジ部にねじ込んで、テストプラグを機器取付端部に固定した状態でネジ部の一部分が露出しても、筒状部材を配管の機器取付端部の側に移動させることによって、露出したネジ部の一部分を被覆して、コンクリート等の異物の流入を防止することができる。これにより、配管作業が完了した後、機器取付端部からテストプラグを容易に取り外すことができるとともに、テストプラグを繰り返し利用することができる。   In this case, even if a part of the screw part is exposed with the screw part of the plug body screwed into the female screw part of the equipment attachment end of the pipe and the test plug fixed to the equipment attachment end, the tubular member is piped. By moving to the device mounting end side, it is possible to cover a part of the exposed screw portion and prevent the inflow of foreign matters such as concrete. Thus, after the piping work is completed, the test plug can be easily removed from the device attachment end portion, and the test plug can be used repeatedly.

以上のように、この発明によれば、ネジ部にシールテープなどのシール材を巻き付ける等の前作業をテスト実施前に行うことなく、圧力が漏洩するのを防止することができ、繰り返し利用することが可能で、簡単な構成のテストプラグを提供することができる。また、この発明のテストプラグは、スパナやレンチ等の工具を用いないで、手で締め付けることによって、栓本体のネジ部を配管の機器取付端部の雌ネジ部にねじ込むことができる。   As described above, according to the present invention, it is possible to prevent pressure from leaking without repeatedly performing prior work such as wrapping a sealing material such as a seal tape around the screw portion before carrying out the test, and it is used repeatedly. It is possible to provide a test plug with a simple configuration. Moreover, the test plug of this invention can screw the screw part of a plug main body into the female screw part of the equipment attachment end part of piping by hand-tightening, without using tools, such as a spanner and a wrench.

この発明の参考形態を図1に基づいて説明する。 A reference embodiment of the present invention will be described with reference to FIG.

図1は、この発明の参考形態としてテストプラグを示す正面図(A)と部分断面側面図(B)である。 FIG. 1 is a front view (A) and a partial sectional side view (B) showing a test plug as a reference embodiment of the present invention.

図1に示すように、テストプラグ1は、配管の機器取付端部にねじ込みで固定することによって機器取付端部を一時的に閉塞するために脱着可能で、弾性変形可能な合成樹脂から形成される栓本体110を備えている。栓本体110は、相対的に軟質の合成樹脂、たとえば、軟質のポリエチレン樹脂、特定的には、直鎖状低密度ポリエチレンを主成分とし、残部が他のポリエチレンからなる混合ポリエチレン樹脂等から形成されているのが好ましい。   As shown in FIG. 1, the test plug 1 is formed of a synthetic resin that is detachable and elastically deformable so as to temporarily close the device mounting end by screwing and fixing it to the device mounting end of the pipe. The plug body 110 is provided. The plug body 110 is formed of a relatively soft synthetic resin, for example, a soft polyethylene resin, specifically, a mixed polyethylene resin mainly composed of linear low-density polyethylene, and the balance of the other polyethylene. It is preferable.

栓本体110は、先端部111と、先端部111よりも基部側に連続して形成されたネジ部112とを含む。ネジ部112は、機器取付端部の雌ネジ部に螺合する雄ネジ部が外周に形成されている。先端部111は、ほぼ円柱状に形成された外周面と、この外周面に連続して形成されたテーパー面111aと、このテーパー面111aに連続して形成された端面とを有する。なお、ネジ部112は、栓本体110の先端に向かうに従って外径が小さくなるように、すなわち、テーパー状に形成されている。   The plug body 110 includes a distal end portion 111 and a threaded portion 112 that is continuously formed on the base side from the distal end portion 111. As for the screw part 112, the external thread part screwed together with the internal thread part of an apparatus attachment end part is formed in the outer periphery. The distal end portion 111 has an outer peripheral surface formed in a substantially cylindrical shape, a tapered surface 111a formed continuously on the outer peripheral surface, and an end surface formed continuously on the tapered surface 111a. The screw portion 112 is formed in a tapered shape so that the outer diameter becomes smaller toward the tip of the plug body 110.

栓本体110は、基部側に形成された把持部114を含む。把持部114は、手締めハンドル部115と、工具挿入部116とを有する。手締めハンドル部115の外周面には、手で掴んで栓本体110を回転して締め付けることができるように凹凸面、たとえば、12組の凹凸状の角部が形成されている。工具挿入部116には、底がある円筒状の穴が形成されている。工具挿入部116の底部には六角レンチ挿入用穴117が形成されている。この六角レンチ挿入用穴117に六角レンチ等を挿入して、栓本体110を回転して締め付けることも可能である。   The plug body 110 includes a grip portion 114 formed on the base side. The grip portion 114 includes a hand tightening handle portion 115 and a tool insertion portion 116. On the outer peripheral surface of the hand tightening handle portion 115, there are formed uneven surfaces, for example, 12 sets of uneven corner portions so that the plug body 110 can be rotated and tightened by hand. The tool insertion portion 116 is formed with a cylindrical hole having a bottom. A hexagon wrench insertion hole 117 is formed at the bottom of the tool insertion portion 116. It is also possible to insert a hexagon wrench or the like into the hexagon wrench insertion hole 117 and rotate and tighten the plug body 110.

ネジ部112と把持部114との間に位置する栓本体110の中央部113の外周面は、筒状部材120によって被覆されている。筒状部材120は、合成ゴムまたは合成樹脂等の弾性発泡体からなる。   The outer peripheral surface of the central portion 113 of the plug body 110 located between the screw portion 112 and the grip portion 114 is covered with a cylindrical member 120. The cylindrical member 120 is made of an elastic foam such as synthetic rubber or synthetic resin.

この発明の一つの実施の形態を図2に基づいて説明する。 One embodiment of the invention will be described with reference to FIG.

図2は、この発明の一つの実施の形態としてテストプラグを示す正面図(A)と部分断面側面図(B)である。 Figure 2 is a front view showing a test plug as one embodiment of the present invention (A) and partial cross-sectional side view (B).

図2に示すように、テストプラグ2は、配管の機器取付端部にねじ込みで固定することによって機器取付端部を一時的に閉塞するために脱着可能で、合成樹脂から形成される栓本体210を備えている。栓本体210は、相対的に軟質の合成樹脂ではなく、相対的に硬質の合成樹脂、たとえば、ABS樹脂等から形成されているのが好ましい。   As shown in FIG. 2, the test plug 2 is detachable to temporarily close the device mounting end by screwing and fixing it to the device mounting end of the pipe, and is a plug body 210 formed of a synthetic resin. It has. The plug body 210 is preferably made of a relatively hard synthetic resin, such as an ABS resin, rather than a relatively soft synthetic resin.

栓本体210は、先端部211と、先端部211よりも基部側に連続して形成されたネジ部212とを含む。先端部211は、ネジ部212よりも外径が小さく、ほぼ円柱状に形成された外周面を有する。   The plug body 210 includes a distal end portion 211 and a screw portion 212 formed continuously from the distal end portion 211 to the base side. The distal end portion 211 has an outer diameter smaller than that of the screw portion 212 and has an outer peripheral surface formed in a substantially cylindrical shape.

さらに、この実施の形態のテストプラグ2は、栓本体210の先端部211の外周面を被覆し、弾性変形可能な材料からなる筒状先端部材230を備えている。筒状先端部材230は、ウレタンゴム、ネオプレンゴム、シリコンゴム、NBRゴム等の合成ゴム、または、軟質の塩化ビニル等の合成樹脂から形成されるのが好ましい。筒状先端部材230は、ほぼ円柱状に形成された外周面231と、この外周面231に連続して形成されたテーパー面232と、このテーパー面232に連続して形成された端面とを有する。筒状先端部材230は、テーパー面232が形成されず、ほぼ円柱状に形成された外周面231と、この外周面231に連続して形成された端面とを有していてもよい。 Furthermore, the test plug 2 of this embodiment includes a cylindrical tip member 230 made of an elastically deformable material that covers the outer peripheral surface of the tip portion 211 of the plug body 210. Tubular tip member 230 is made of a urethane rubber, neoprene rubber, silicone rubber, synthetic rubber such as NBR rubber, or that is formed from a synthetic resin such as vinyl chloride soft preferred. The cylindrical tip member 230 has an outer peripheral surface 231 formed in a substantially columnar shape, a tapered surface 232 formed continuously with the outer peripheral surface 231, and an end surface formed continuously with the tapered surface 232. . The cylindrical tip member 230 may have an outer peripheral surface 231 formed in a substantially columnar shape and an end surface formed continuously with the outer peripheral surface 231 without the tapered surface 232 being formed.

栓本体210の先端部211は、筒状先端部材230の内径よりも大きな外径を有する先端縁部211aを含む。これにより、筒状先端部材230に栓本体210の先端部211が挿入されることによって、筒状先端部材230が栓本体210の先端部211の外周面を被覆するように配置されて取付けられても、筒状先端部材230が先端部211から容易に抜けて外れることがないようにされている。   The distal end portion 211 of the plug body 210 includes a distal end edge portion 211 a having an outer diameter larger than the inner diameter of the cylindrical distal end member 230. As a result, the distal end portion 211 of the plug body 210 is inserted into the tubular distal member 230 so that the tubular distal member 230 is disposed and attached so as to cover the outer peripheral surface of the distal end portion 211 of the stopper body 210. Also, the cylindrical tip member 230 is prevented from easily coming off from the tip portion 211 and coming off.

ネジ部212は、機器取付端部の雌ネジ部に螺合する雄ネジ部が外周に形成されている。なお、ネジ部212は、栓本体210の先端に向かうに従って外径が小さくなるように、すなわち、テーパー状に形成されている。   As for the screw part 212, the external thread part engaged with the internal thread part of an apparatus attachment end part is formed in the outer periphery. The screw portion 212 is formed in a tapered shape so that the outer diameter becomes smaller toward the tip of the plug body 210.

栓本体210は、基部側に形成された把持部214を含む。把持部214は、手締めハンドル部215と、工具挿入部216とを有する。手締めハンドル部215の外周面には、手で掴んで栓本体210を回転して締め付けることができるように凹凸面、たとえば、12組の凹凸状の角部が形成されている。工具挿入部216には、底がある円筒状の穴が形成されている。工具挿入部216の底部には六角レンチ挿入用穴217が形成されている。この六角レンチ挿入用穴217に六角レンチ等を挿入して、栓本体210を回転して締め付けることも可能である。   The plug body 210 includes a gripping portion 214 formed on the base side. The gripping part 214 includes a hand tightening handle part 215 and a tool insertion part 216. On the outer peripheral surface of the hand tightening handle portion 215, there are formed uneven surfaces, for example, 12 sets of uneven corner portions so that the plug body 210 can be rotated and tightened by hand. The tool insertion portion 216 is formed with a cylindrical hole having a bottom. A hexagon wrench insertion hole 217 is formed at the bottom of the tool insertion portion 216. It is also possible to insert a hexagon wrench or the like into the hexagon wrench insertion hole 217 and rotate and tighten the plug body 210.

ネジ部212と把持部214との間に位置する栓本体210の中央部213の外周面は、筒状部材220によって被覆されている。筒状部材220は、合成ゴムまたは合成樹脂等の弾性発泡体からなる。   The outer peripheral surface of the central portion 213 of the plug body 210 located between the screw portion 212 and the grip portion 214 is covered with a cylindrical member 220. The cylindrical member 220 is made of an elastic foam such as synthetic rubber or synthetic resin.

図3は、この発明のもう一つの実施の形態としてテストプラグを示す正面図(A)と部分断面側面図(B)である。 Figure 3 is a front view showing a test plug in the form of even Cormorants one embodiment of the present invention (A) and partial cross-sectional side view (B).

図3に示すテストプラグ2が、図2に示されたテストプラグ2と異なる点は、筒状先端部材の形状だけであり、その他の点は図2のテストプラグ2と同様である。   The test plug 2 shown in FIG. 3 is different from the test plug 2 shown in FIG. 2 only in the shape of the cylindrical tip member, and the other points are the same as the test plug 2 shown in FIG.

図3に示すように、筒状先端部材240の外周面は、先端側に向かうに従って外径が大きくなるように形成されており、すなわち、逆テーパー面241からなる。   As shown in FIG. 3, the outer peripheral surface of the cylindrical tip member 240 is formed to have an outer diameter that increases toward the tip side, that is, a reverse tapered surface 241.

図4は、配管の機器取付端部の一つの形態を示す断面図である。   FIG. 4 is a cross-sectional view showing one form of the equipment mounting end of the piping.

図4に示すように、配管の機器取付端部3は、たとえば、塩化ビニル製の逆L状に形成された給水栓継手31からなる。給水栓継手31の給水口側には、相対的に内径の小さい内側内径部32と、この内側内径部32よりも給水口側に位置づけられ、相対的に内径の大きい外側内径部33が形成されている。内側内径部32と外側内径部33との間には、傾斜面、すなわち、テーパー面が形成されている。外側内径部33よりもさらに給水口側には、砲金製のインサート雌ネジ部34が配置されている。インサート雌ネジ部34には、テストプラグのネジ部に螺合する雌ネジ部が内周面に形成されている。配管の機器取付端部3の機器取付接触部35には、蛇口等の各種の給水器具が取付けられるように構成されている。   As shown in FIG. 4, the equipment attachment end 3 of the pipe is composed of, for example, a water faucet joint 31 formed in a reverse L shape made of vinyl chloride. On the water inlet side of the water tap joint 31, an inner inner diameter portion 32 having a relatively smaller inner diameter and an outer inner diameter portion 33 having a relatively larger inner diameter are formed which are positioned closer to the water inlet side than the inner inner diameter portion 32. ing. An inclined surface, that is, a tapered surface is formed between the inner inner diameter portion 32 and the outer inner diameter portion 33. An insert female screw portion 34 made of gunmetal is disposed further to the water supply port side than the outer inner diameter portion 33. The insert female screw portion 34 has a female screw portion formed on the inner peripheral surface thereof to be screwed into the screw portion of the test plug. Various equipments such as a faucet are attached to the equipment attachment contact portion 35 of the equipment attachment end 3 of the pipe.

図5は、配管の機器取付端部の別の形態を示す断面図である。   FIG. 5 is a cross-sectional view showing another form of the equipment attachment end of the piping.

図5に示すように、配管の機器取付端部4は、たとえば、塩化ビニル製の逆L状に形成された給水栓継手41からなる。給水栓継手41の給水口側には、相対的に内径の小さい内側内径部42と、この内側内径部42よりも給水口側に位置づけられ、相対的に内径の大きい外側内径部43が形成されている。内側内径部42と外側内径部43との間には、ほぼ垂直な面、すなわち、段差面が形成されている。外側内径部43よりもさらに給水口側には、砲金製のインサート雌ネジ部44が配置されている。インサート雌ネジ部44には、テストプラグのネジ部に螺合する雌ネジ部が内周面に形成されている。配管の機器取付端部4の機器取付接触部45には、蛇口等の各種の給水器具が取付けられるように構成されている。   As shown in FIG. 5, the equipment mounting end 4 of the pipe is composed of, for example, a water faucet joint 41 formed in a reverse L shape made of vinyl chloride. On the water inlet side of the water faucet joint 41, an inner inner diameter portion 42 having a relatively smaller inner diameter and an outer inner diameter portion 43 having a relatively larger inner diameter are formed which are positioned closer to the water inlet side than the inner inner diameter portion 42. ing. A substantially vertical surface, that is, a step surface is formed between the inner inner diameter portion 42 and the outer inner diameter portion 43. An insert female screw portion 44 made of gunmetal is arranged further on the water supply port side than the outer inner diameter portion 43. The insert female screw portion 44 has a female screw portion that is screwed into the screw portion of the test plug on the inner peripheral surface. Various equipments such as a faucet are attached to the equipment attachment contact portion 45 of the equipment attachment end 4 of the pipe.

図6は、図4に示された配管の機器取付端部に蛇口が取付けられた状態を示す部分断面側面図である。   FIG. 6 is a partial cross-sectional side view showing a state where a faucet is attached to the equipment attachment end of the pipe shown in FIG. 4.

図6に示すように、蛇口機器6が配管の機器取付端部3の機器取付接触部35に取付けられている。蛇口機器6の雄ネジ部がインサート雌ネジ部34に螺合することにより、蛇口機器6が配管の機器取付端部3に取付けられている。   As shown in FIG. 6, the faucet device 6 is attached to the device attachment contact portion 35 of the device attachment end 3 of the pipe. The faucet device 6 is attached to the equipment attachment end 3 of the pipe by the male screw portion of the faucet device 6 being screwed into the insert female screw portion 34.

図7は、図1のテストプラグが図4の配管の機器取付端部に取り付けられた状態を示す断面図(A)、テストプラグの先端部と給水栓継手の内周面との接触状態を示す部分段面図(B)、(C)である。   7 is a cross-sectional view (A) showing a state in which the test plug of FIG. 1 is attached to the equipment attachment end of the pipe of FIG. 4, and shows the contact state between the tip of the test plug and the inner peripheral surface of the water tap joint It is the partial step view (B) and (C) which are shown.

図7の(A)に示すように、テストプラグ1の把持部114を手で回転させて、または、六角レンチ等の工具を工具挿入部116に挿入し六角レンチ挿入用穴117に係合させて回転させて、栓本体110のネジ部112を配管の機器取付端部3のインサート雌ネジ部34に螺合させることによって、テストプラグ1を締め付けて配管の機器取付端部3に取付けることができる。給水栓継手31の給水口と反対側には給水栓配管5が接続されている。   As shown in FIG. 7A, the gripping portion 114 of the test plug 1 is rotated by hand, or a tool such as a hex wrench is inserted into the tool insertion portion 116 and engaged with the hex wrench insertion hole 117. The test plug 1 can be tightened and attached to the equipment attachment end 3 of the pipe by screwing the screw part 112 of the plug body 110 into the insert female screw part 34 of the equipment attachment end 3 of the pipe. it can. A water tap pipe 5 is connected to the side opposite to the water supply port of the water tap joint 31.

このとき、図7の(A)と(B)に示すように、栓本体110の先端部111が弾性変形することにより、先端部111のテーパー面は配管の機器取付端部3の内側内径部32と外側内径部33の間のテーパー面に整合してほぼ面接触で密着した状態である。図においては、先端部111の外周面と配管の機器取付端部3の内周面との間には大きな隙間が存在するように誇張されて示されているが、少なくともテストプラグ1を締め付けるために回転させることができるだけの微小な隙間が存在すればよい。   At this time, as shown in FIGS. 7A and 7B, the distal end portion 111 of the plug main body 110 is elastically deformed, so that the tapered surface of the distal end portion 111 becomes the inner inner diameter portion of the equipment mounting end portion 3 of the pipe. It is in a state of being in close contact with the taper surface between the outer diameter portion 32 and the outer side inner diameter portion 33 with substantially surface contact. In the drawing, it is exaggerated and shown that there is a large gap between the outer peripheral surface of the tip 111 and the inner peripheral surface of the equipment mounting end 3 of the pipe, but at least for tightening the test plug 1. It suffices if there is a minute gap that can be rotated by a small amount.

また、このとき、配管の機器取付端部3の形状によっては、栓本体110の先端部111が弾性変形しても、先端部111のテーパー面が機器取付端部3の内側内径部32と外側内径部33の間のテーパー面に整合しない可能性がある。しかし、この場合でも、図7の(C)に示すように、先端部111のテーパー面のいずれかの箇所が、内側内径部32と外側内径部33の間のテーパー面のいずれかの箇所に、少なくとも線接触することができる。   At this time, depending on the shape of the equipment mounting end 3 of the pipe, even if the distal end 111 of the plug body 110 is elastically deformed, the tapered surface of the distal end 111 remains outside the inner inner diameter portion 32 of the equipment mounting end 3. There is a possibility that the taper surface between the inner diameter portions 33 is not aligned. However, even in this case, as shown in FIG. 7C, any portion of the tapered surface of the tip portion 111 is located at any portion of the tapered surface between the inner inner diameter portion 32 and the outer inner diameter portion 33. , At least line contact can be made.

あるいは、図示されていないが、先端部111の外周面または端面が、内側内径部32と外側内径部33の間のテーパー面のいずれかの箇所に、少なくとも線接触することができる。   Or although not shown in figure, the outer peripheral surface or end surface of the front-end | tip part 111 can be at least line-contacted with any location of the taper surface between the inner side inner diameter part 32 and the outer side inner diameter part 33. FIG.

したがって、栓本体110のネジ部112が配管の機器取付端部3のインサート雌ネジ部34にねじ込まれることによってテストプラグ1が配管の機器取付端部3に固定されるとともに、栓本体110の先端部111が、上記のねじ込まれた部分から圧力が漏洩するのを防止する役割を果たす。栓本体110の先端部111における外周面、テーパー面、または、端面の少なくともいずれか一つの面が、機器取付端部3の給水栓継手31の内周面、すなわち、内側内径部32と外側内径部33の間のテーパー面のいずれかの箇所に接触することができる。このとき、栓本体110は弾性変形可能な合成樹脂から形成されているので、栓本体110の先端部111は機器取付端部3の給水栓継手31の内周面の形状に応じて弾性変形することができる。すなわち、栓本体110の先端部111における外周面、テーパー面、または、端面の少なくともいずれか一つの面が機器取付端部3の給水栓継手31の内周面に密着するように、栓本体110の先端部111は機器取付端部3の給水栓継手31の内周面の形状に応じて弾性変形することができる。よって、ネジ部にシールテープなどのシール材を巻き付ける等の前作業をテスト実施前に行うことなく、圧力が漏洩するのを防止することができる。   Therefore, the screw plug 112 of the plug main body 110 is screwed into the insert female screw portion 34 of the piping device mounting end 3, whereby the test plug 1 is fixed to the piping device mounting end 3 and the tip of the plug main body 110. The portion 111 serves to prevent pressure from leaking from the screwed portion. At least one of the outer peripheral surface, the tapered surface, or the end surface of the distal end portion 111 of the plug body 110 is the inner peripheral surface of the water tap joint 31 of the device mounting end portion 3, that is, the inner inner diameter portion 32 and the outer inner diameter. Any part of the tapered surface between the portions 33 can be contacted. At this time, since the plug body 110 is formed of an elastically deformable synthetic resin, the distal end portion 111 of the plug body 110 is elastically deformed according to the shape of the inner peripheral surface of the water tap joint 31 of the device mounting end 3. be able to. That is, the plug body 110 is configured such that at least one of the outer peripheral surface, the tapered surface, or the end surface of the distal end portion 111 of the plug body 110 is in close contact with the inner peripheral surface of the water tap joint 31 of the device attachment end 3. The front end portion 111 can be elastically deformed according to the shape of the inner peripheral surface of the water tap joint 31 of the device attachment end portion 3. Therefore, it is possible to prevent the pressure from leaking without performing a pre-work such as wrapping a sealing material such as a seal tape around the screw portion before performing the test.

図8は、図1のテストプラグが図5の配管の機器取付端部に取り付けられた状態を示す断面図、テストプラグの先端部と給水栓継手の内周面との接触状態を示す部分段面図(B)、(C)である。   8 is a cross-sectional view showing a state in which the test plug of FIG. 1 is attached to the equipment attachment end of the pipe of FIG. 5, and a partial stage showing a contact state between the tip of the test plug and the inner peripheral surface of the water tap joint It is a surface view (B), (C).

図8の(A)に示すように、テストプラグ1の把持部114を手で回転させて、または、六角レンチ等の工具を工具挿入部116に挿入し六角レンチ挿入用穴117に係合させて回転させて、栓本体110のネジ部112を配管の機器取付端部4のインサート雌ネジ部44に螺合させることによって、テストプラグ1を締め付けて配管の機器取付端部4に取付けることができる。給水栓継手41の給水口と反対側には給水栓配管5が接続されている。   As shown in FIG. 8A, the grip portion 114 of the test plug 1 is rotated by hand, or a tool such as a hex wrench is inserted into the tool insertion portion 116 and engaged with the hex wrench insertion hole 117. The test plug 1 can be tightened and attached to the equipment attachment end 4 of the pipe by screwing the screw part 112 of the plug body 110 into the insert female screw part 44 of the equipment attachment end 4 of the pipe. it can. A water faucet pipe 5 is connected to the side of the water faucet joint 41 opposite to the water inlet.

このとき、図8の(A)に示すように、栓本体110の先端部111が弾性変形することにより、先端部111の端面が、配管の機器取付端部4の内側内径部42と外側内径部43の間の段差面に整合してほぼ面接触で密着した状態である。図においては、先端部111の外周面と配管の機器取付端部4の内周面との間には大きな隙間が存在するように誇張されて示されているが、少なくともテストプラグ1を締め付けるために回転させることができるだけの微小な隙間が存在すればよい。   At this time, as shown in FIG. 8A, the distal end portion 111 of the plug body 110 is elastically deformed so that the end surface of the distal end portion 111 becomes the inner inner diameter portion 42 and the outer inner diameter portion of the equipment mounting end portion 4 of the pipe. This is in a state of being in close contact with the stepped surface between the portions 43 and being substantially in surface contact. In the drawing, it is exaggerated and shown that there is a large gap between the outer peripheral surface of the tip 111 and the inner peripheral surface of the equipment mounting end 4 of the pipe, but at least for tightening the test plug 1. It suffices if there is a minute gap that can be rotated by a small amount.

また、このとき、配管の機器取付端部4の形状によっては、栓本体110の先端部111が弾性変形しても、先端部111の端面が機器取付端部4の内側内径部42と外側内径部43の間の段差面に整合しない可能性がある。しかし、この場合でも、図8の(B)と(C)に示すように、先端部111の端面のいずれかの箇所が、内側内径部42と外側内径部43の間の段差面のいずれかの箇所に、少なくとも面接触することができる。   At this time, depending on the shape of the equipment mounting end 4 of the pipe, even if the distal end 111 of the plug body 110 is elastically deformed, the end surface of the distal end 111 remains the inner inner diameter 42 and the outer inner diameter of the equipment mounting end 4. There is a possibility that the stepped surface between the portions 43 is not aligned. However, even in this case, as shown in FIGS. 8B and 8C, any part of the end surface of the distal end portion 111 is any one of the step surfaces between the inner inner diameter portion 42 and the outer inner diameter portion 43. It is possible to make at least surface contact with each other.

したがって、栓本体110のネジ部112が配管の機器取付端部4のインサート雌ネジ部44にねじ込まれることによってテストプラグ1が配管の機器取付端部4に固定されるとともに、栓本体110の先端部111が、上記のねじ込まれた部分から圧力が漏洩するのを防止する役割を果たす。栓本体110の先端部111における端面が、機器取付端部4の給水栓継手41の内周面、すなわち、内側内径部42と外側内径部43の間の段差面のいずれかの箇所に接触することができる。このとき、栓本体110は弾性変形可能な合成樹脂から形成されているので、栓本体110の先端部111は機器取付端部4の給水栓継手41の内周面の形状に応じて弾性変形することができる。すなわち、栓本体110の先端部111における端面が機器取付端部4の給水栓継手41の内周面に密着するように、栓本体110の先端部111は機器取付端部4の給水栓継手41の内周面の形状に応じて弾性変形することができる。よって、ネジ部にシールテープなどのシール材を巻き付ける等の前作業をテスト実施前に行うことなく、圧力が漏洩するのを防止することができる。   Therefore, the screw plug 112 of the plug body 110 is screwed into the insert female screw section 44 of the piping device mounting end 4, whereby the test plug 1 is fixed to the piping device mounting end portion 4, and the plug body 110 has a tip. The portion 111 serves to prevent pressure from leaking from the screwed portion. An end surface of the distal end portion 111 of the plug body 110 contacts an inner peripheral surface of the water faucet joint 41 of the device attachment end portion 4, that is, any part of a step surface between the inner inner diameter portion 42 and the outer inner diameter portion 43. be able to. At this time, since the plug body 110 is made of an elastically deformable synthetic resin, the distal end portion 111 of the plug body 110 is elastically deformed according to the shape of the inner peripheral surface of the water tap joint 41 of the device mounting end 4. be able to. That is, the tip 111 of the plug body 110 is connected to the water tap joint 41 of the device mounting end 4 so that the end surface of the tip 111 of the plug body 110 is in close contact with the inner peripheral surface of the water tap joint 41 of the device mounting end 4. It can be elastically deformed according to the shape of the inner peripheral surface. Therefore, it is possible to prevent the pressure from leaking without performing a pre-work such as wrapping a sealing material such as a seal tape around the screw portion before performing the test.

以上のように、テストプラグ1においては、栓本体110のネジ部112よりも先端側に上記の形状の先端部111を形成するだけで、図4や図5に示される配管の機器取付端部3、4にねじ込みでテストプラグを固定したときに圧力が漏洩するのを防止することができる。したがって、簡単な構成のテストプラグを提供することができる。   As described above, in the test plug 1, the device mounting end portion of the pipe shown in FIGS. 4 and 5 is formed only by forming the tip portion 111 having the above shape on the tip side of the screw portion 112 of the plug body 110. It is possible to prevent the pressure from leaking when the test plug is fixed to the third and fourth screws. Therefore, a test plug having a simple configuration can be provided.

テストプラグ1においては、栓本体110は、相対的に軟性の合成樹脂から形成されているので、栓本体110の先端部111は機器取付端部3、4の給水栓継手31、41の内周面の形状に応じてより容易に弾性変形することができる。すなわち、栓本体110の先端部111における外周面、テーパー面、または、端面の少なくともいずれか一つの面が機器取付端部3、4の給水栓継手31、41の内周面に密着するように、栓本体110の先端部111は機器取付端部3、4の給水栓継手31、41の内周面の形状に応じてより容易に弾性変形することができる。   In the test plug 1, the plug body 110 is made of a relatively soft synthetic resin, so that the distal end portion 111 of the plug body 110 is the inner periphery of the water tap joints 31, 41 of the device mounting end portions 3, 4. It can be more easily elastically deformed depending on the shape of the surface. That is, at least one of the outer peripheral surface, the tapered surface, or the end surface of the distal end portion 111 of the plug body 110 is in close contact with the inner peripheral surface of the water tap joints 31, 41 of the device attachment end portions 3, 4. The distal end portion 111 of the plug body 110 can be more easily elastically deformed according to the shape of the inner peripheral surface of the water tap joints 31 and 41 of the device mounting end portions 3 and 4.

図9は、図2または図3のテストプラグが図4の配管の機器取付端部に取り付けられた状態を示す断面図である。   9 is a cross-sectional view showing a state where the test plug of FIG. 2 or 3 is attached to the equipment attachment end of the pipe of FIG.

図9に示すように、テストプラグ2の把持部214を手で回転させて、または、六角レンチ等の工具を工具挿入部216に挿入し六角レンチ挿入用穴217に係合させて回転させて、栓本体210のネジ部212を配管の機器取付端部3のインサート雌ネジ部34に螺合させることによって、テストプラグ2を締め付けて配管の機器取付端部3に取付けることができる。給水栓継手31の給水口と反対側には給水栓配管5が接続されている。   As shown in FIG. 9, the gripping part 214 of the test plug 2 is rotated by hand, or a tool such as a hexagon wrench is inserted into the tool insertion part 216 and engaged with the hexagon wrench insertion hole 217 and rotated. The test plug 2 can be tightened and attached to the equipment attachment end 3 of the pipe by screwing the screw part 212 of the plug body 210 into the insert female thread 34 of the equipment attachment end 3 of the pipe. A water tap pipe 5 is connected to the side opposite to the water supply port of the water tap joint 31.

このとき、図9に示すように筒状先端部材230が弾性変形することにより、テーパー面232は、配管の機器取付端部3の内側内径部32と外側内径部33の間のテーパー面に整合してほぼ面接触で密着した状態である。また、筒状先端部材230の外周面231も給水栓継手31の内周面に整合してほぼ面接触で密着した状態である。図3に示されるテストプラグ2を用いた場合も、筒状先端部材240が弾性変形することにより、筒状先端部材240の逆テーパー面241は、配管の機器取付端部3の内側内径部32と外側内径部33の間のテーパー面に整合してほぼ面接触で密着した状態である。また、筒状先端部材240の逆テーパー面241は、給水栓継手31の内周面にも整合してほぼ面接触で密着した状態である。   At this time, as shown in FIG. 9, the cylindrical tip member 230 is elastically deformed so that the tapered surface 232 is aligned with the tapered surface between the inner inner diameter portion 32 and the outer inner diameter portion 33 of the equipment mounting end portion 3 of the pipe. Thus, it is in a close contact state with almost surface contact. Moreover, the outer peripheral surface 231 of the cylindrical tip member 230 is also in a state of being in close contact with the inner peripheral surface of the water faucet joint 31 and being substantially in surface contact. Also when the test plug 2 shown in FIG. 3 is used, the reverse tapered surface 241 of the cylindrical tip member 240 is elastically deformed by the cylindrical tip member 240 so that the inner inner diameter portion 32 of the equipment mounting end 3 of the pipe. And in close contact with the taper surface between the inner diameter portion 33 and the outer inner diameter portion 33 in close contact with each other. Further, the reverse tapered surface 241 of the cylindrical tip member 240 is in a state of being in close contact with the inner peripheral surface of the faucet joint 31 and in close contact with the surface.

したがって、テストプラグ2のネジ部212が配管の機器取付端部3のインサート雌ネジ部34にねじ込まれることによってテストプラグ1が配管の機器取付端部3に固定されるとともに、筒状先端部材230、240が、上記のねじ込まれた部分から圧力が漏洩するのを防止する役割を果たす。筒状先端部材230、240における外周面、テーパー面、または、端面の少なくともいずれか一つの面が、機器取付端部3の給水栓継手31の内周面、すなわち、内側内径部32と外側内径部33の間のテーパー面のいずれかの箇所に接触することができる。このとき、筒状先端部材230、240は弾性変形可能な材料から形成されているので、筒状先端部材230、240は機器取付端部3の給水栓継手31の内周面の形状に応じて弾性変形することができる。すなわち筒状先端部材230、240における外周面、テーパー面、または、端面の少なくともいずれか一つの面が機器取付端部3の給水栓継手31の内周面に密着するように、筒状先端部材230、240は機器取付端部3の給水栓継手31の内周面の形状に応じて弾性変形することができる。よって、ネジ部にシールテープなどのシール材を巻き付ける等の前作業をテスト実施前に行うことなく、圧力が漏洩するのを防止することができる。   Therefore, the screw portion 212 of the test plug 2 is screwed into the insert female screw portion 34 of the piping device mounting end portion 3, whereby the test plug 1 is fixed to the piping device mounting end portion 3 and the cylindrical tip member 230. , 240 serves to prevent pressure leakage from the threaded portion. At least one of the outer peripheral surface, the tapered surface, and the end surface of the cylindrical tip members 230 and 240 is the inner peripheral surface of the water faucet joint 31 of the device mounting end 3, that is, the inner inner diameter portion 32 and the outer inner diameter. Any part of the tapered surface between the portions 33 can be contacted. At this time, since the cylindrical tip members 230 and 240 are formed of a material that can be elastically deformed, the cylindrical tip members 230 and 240 correspond to the shape of the inner peripheral surface of the water tap joint 31 of the device mounting end 3. It can be elastically deformed. That is, the cylindrical tip member such that at least one of the outer peripheral surface, the tapered surface, or the end surface of the cylindrical tip member 230, 240 is in close contact with the inner peripheral surface of the water faucet joint 31 of the device attachment end 3 230 and 240 can be elastically deformed according to the shape of the inner peripheral surface of the water faucet joint 31 of the device mounting end 3. Therefore, it is possible to prevent the pressure from leaking without performing a pre-work such as wrapping a sealing material such as a seal tape around the screw portion before performing the test.

図10は、図2または図3のテストプラグが図5の配管の機器取付端部に取り付けられた状態を示す断面図である。   10 is a cross-sectional view showing a state in which the test plug of FIG. 2 or 3 is attached to the equipment attachment end of the pipe of FIG.

図10に示すように、テストプラグ2の把持部214を手で回転させて、または、六角レンチ等の工具を工具挿入部216に挿入し六角レンチ挿入用穴217に係合させて回転させて、栓本体210のネジ部212を配管の機器取付端部4のインサート雌ネジ部44に螺合させることによって、テストプラグ2を締め付けて配管の機器取付端部4に取付けることができる。給水栓継手41の給水口と反対側には給水栓配管5が接続されている。   As shown in FIG. 10, the gripping part 214 of the test plug 2 is rotated by hand, or a tool such as a hexagon wrench is inserted into the tool insertion part 216 and engaged with the hexagon wrench insertion hole 217 and rotated. The test plug 2 can be tightened and attached to the equipment attachment end 4 of the pipe by screwing the screw part 212 of the plug body 210 into the insert female thread 44 of the equipment attachment end 4 of the pipe. A water faucet pipe 5 is connected to the side of the water faucet joint 41 opposite to the water inlet.

このとき、図10に示すように、筒状先端部材230、240が弾性変形することにより、筒状先端部材230、240の端面が、配管の機器取付端部4の内側内径部42と外側内径部43の間の段差面に整合してほぼ面接触で密着した状態である。また、筒状先端部材230の外周面231も給水栓継手41の内周面に整合してほぼ面接触で密着した状態である。図3に示されるテストプラグ2を用いた場合も、筒状先端部材240が弾性変形することにより、筒状先端部材240の逆テーパー面241は、給水栓継手41の内周面に整合してほぼ面接触で密着した状態である。   At this time, as shown in FIG. 10, the cylindrical tip members 230 and 240 are elastically deformed, so that the end surfaces of the cylindrical tip members 230 and 240 become the inner inner diameter portion 42 and the outer inner diameter of the equipment mounting end portion 4 of the pipe. This is in a state of being in close contact with the stepped surface between the portions 43 and being substantially in surface contact. Further, the outer peripheral surface 231 of the cylindrical tip member 230 is also in close contact with the inner peripheral surface of the water faucet joint 41 in close contact with each other. Also when the test plug 2 shown in FIG. 3 is used, the reverse tapered surface 241 of the cylindrical tip member 240 is aligned with the inner peripheral surface of the water faucet joint 41 by elastic deformation of the cylindrical tip member 240. It is in a state of close contact with almost surface contact.

したがって、栓本体210のネジ部212が配管の機器取付端部4のインサート雌ネジ部44にねじ込まれることによってテストプラグ2が配管の機器取付端部4に固定されるとともに、筒状先端部材230、240が、上記のねじ込まれた部分から圧力が漏洩するのを防止する役割を果たす。筒状先端部材230、240における端面が、機器取付端部4の給水栓継手41の内周面、すなわち、内側内径部42と外側内径部43の間の段差面のいずれかの箇所に接触することができる。このとき、筒状先端部材230、240は弾性変形可能な材料から形成されているので、筒状先端部材230、240は機器取付端部4の給水栓継手41の内周面の形状に応じて弾性変形することができる。すなわち、筒状先端部材230、240における端面が機器取付端部4の給水栓継手41の内周面に密着するように、筒状先端部材230、240は機器取付端部4の給水栓継手41の内周面の形状に応じて弾性変形することができる。よって、ネジ部にシールテープなどのシール材を巻き付ける等の前作業をテスト実施前に行うことなく、圧力が漏洩するのを防止することができる。   Therefore, the screw portion 212 of the plug body 210 is screwed into the insert female screw portion 44 of the piping device mounting end portion 4 so that the test plug 2 is fixed to the piping device mounting end portion 4 and the cylindrical tip member 230. , 240 serves to prevent pressure leakage from the threaded portion. The end surfaces of the cylindrical tip members 230 and 240 are in contact with the inner peripheral surface of the water faucet joint 41 of the device mounting end 4, that is, any part of the step surface between the inner inner diameter portion 42 and the outer inner diameter portion 43. be able to. At this time, since the cylindrical tip members 230 and 240 are made of an elastically deformable material, the cylindrical tip members 230 and 240 correspond to the shape of the inner peripheral surface of the water faucet joint 41 of the device mounting end 4. It can be elastically deformed. That is, the cylindrical tip members 230 and 240 are connected to the inner peripheral surface of the water faucet joint 41 of the equipment attachment end 4 so that the end faces of the cylindrical tip members 230 and 240 are in close contact with the water faucet joint 41 of the equipment attachment end 4. It can be elastically deformed according to the shape of the inner peripheral surface. Therefore, it is possible to prevent the pressure from leaking without performing a pre-work such as wrapping a sealing material such as a seal tape around the screw portion before performing the test.

以上のように、テストプラグ2においては、栓本体210のネジ部212よりも先端側に上記の形状の筒状先端部材230、240を配置するだけで、図4や図5に示される配管の機器取付端部3、4にねじ込みでテストプラグを固定したときに圧力が漏洩するのを防止することができる。したがって、簡単な構成のテストプラグを提供することができる。   As described above, in the test plug 2, the tubular tip members 230 and 240 having the above-described shape are disposed on the tip side of the screw portion 212 of the plug body 210, and the piping shown in FIGS. It is possible to prevent the pressure from leaking when the test plug is fixed to the device mounting end portions 3 and 4 by screwing. Therefore, a test plug having a simple configuration can be provided.

なお、図3に示されるテストプラグ2において筒状先端部材240の外周面は、先端側に向かうに従って外径が大きくなるように形成されており、すなわち、逆テーパー面241を有する。このため、筒状先端部材240における外周面または端面の少なくともいずれか一つの面が機器取付端部3、4の給水栓継手31、41の内周面により強固に密着するように、筒状先端部材240は機器取付端部3、4の給水栓継手31、41の内周面の形状に応じて弾性変形することができる。また、テストプラグ2を機器取付端部3、4から取り外す際に、筒状先端部材240が機器取付端部3、4の給水栓継手31、41の内周面、特にインサート雌ネジ部34、44の内周面に引っ掛かって栓本体210の先端部211の外周面から外れることがないようにすることができる。   In the test plug 2 shown in FIG. 3, the outer peripheral surface of the cylindrical tip member 240 is formed so that the outer diameter increases toward the tip side, that is, has a reverse tapered surface 241. Therefore, at least one of the outer peripheral surface and the end surface of the cylindrical tip member 240 is more firmly attached to the inner peripheral surfaces of the water tap joints 31 and 41 of the device attachment end portions 3 and 4. The member 240 can be elastically deformed according to the shape of the inner peripheral surface of the water tap joints 31, 41 of the device attachment end portions 3, 4. Further, when the test plug 2 is removed from the device mounting end portions 3 and 4, the cylindrical tip member 240 is attached to the inner peripheral surface of the water faucet joints 31 and 41 of the device mounting end portions 3 and 4, particularly the insert female screw portion 34, It is possible to prevent it from being caught by the inner peripheral surface of 44 and coming off from the outer peripheral surface of the distal end portion 211 of the plug main body 210.

以上の実施の形態で説明したテストプラグ1、2においては、従来のように、配管作業が完了した後、機器取付端部から取り外したテストプラグを再利用するためにはネジ部に巻き付けられたシールテープを除去する必要がないので、テストプラグを繰り返し利用することができる。   In the test plugs 1 and 2 described in the above embodiment, after the piping work is completed as in the prior art, the test plug removed from the device mounting end portion is wound around the screw portion to be reused. Since it is not necessary to remove the sealing tape, the test plug can be used repeatedly.

また、テストプラグ1、2においては、ネジ部にシールテープなどのシール材を巻き付ける等の前作業をテスト実施前に行わないので、スパナやレンチ等の工具を用いないで、手で締め付けることによって、栓本体110、210のネジ部112、212を配管の機器取付端部3、4のインサート雌ネジ部34、44にねじ込むことができる。   Also, in test plugs 1 and 2, the pre-work such as wrapping seal material such as seal tape around the thread is not performed before the test, so by tightening by hand without using a tool such as a spanner or wrench. The screw portions 112 and 212 of the plug main bodies 110 and 210 can be screwed into the insert female screw portions 34 and 44 of the equipment mounting end portions 3 and 4 of the piping.

ところで、栓本体110、210のネジ部112、212を配管の機器取付端部3、4のインサート雌ネジ部34、44にねじ込んで、テストプラグ1、2を機器取付端部3、4に固定した状態で、栓本体110、210のネジ部112、212の一部分や中央部113、213が露出する場合がある。テストプラグ1、2は、ネジ部112、212と把持部114、214との間に位置する栓本体110、210の外周面、すなわち、中央部113、213を被覆し、弾性発泡体からなる筒状部材120、220を備えている。このように構成されているので、図7〜図10に示すように筒状部材120、220を配管の機器取付端部3、4の側に移動させて、配管の機器取付端部3、4の機器取付接触部35、45に密着させることによって、露出したネジ部112、212の一部分を被覆して、コンクリート等の異物の流入を防止することができる。これにより、配管作業が完了した後、機器取付端部3、4からテストプラグ1、2を容易に取り外すことができるとともに、テストプラグ1、2を繰り返し利用することができる。   By the way, the screw portions 112 and 212 of the plug main bodies 110 and 210 are screwed into the insert female screw portions 34 and 44 of the piping device mounting end portions 3 and 4, and the test plugs 1 and 2 are fixed to the device mounting end portions 3 and 4. In this state, part of the screw portions 112 and 212 and the central portions 113 and 213 of the plug bodies 110 and 210 may be exposed. The test plugs 1 and 2 cover the outer peripheral surfaces of the plug bodies 110 and 210 located between the screw portions 112 and 212 and the grip portions 114 and 214, that is, the center portions 113 and 213, and are made of an elastic foam. Shaped members 120 and 220 are provided. Since it is comprised in this way, as shown to FIGS. 7-10, the cylindrical members 120 and 220 are moved to the equipment attachment edge part 3 and 4 side of piping, and the equipment attachment edge part 3 and 4 of piping By adhering to the device attachment contact portions 35 and 45, it is possible to cover a part of the exposed screw portions 112 and 212 and prevent inflow of foreign matters such as concrete. Thereby, after the piping work is completed, the test plugs 1 and 2 can be easily removed from the device attachment end portions 3 and 4, and the test plugs 1 and 2 can be used repeatedly.

以上に開示された実施の形態はすべての点で例示であって制限的なものではないと考慮されるべきである。本発明の範囲は、以上の実施の形態ではなく、特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての修正や変形を含むものである。   The embodiment disclosed above should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above embodiments but by the scope of claims, and includes all modifications and variations within the meaning and scope equivalent to the scope of claims.

この発明の参考形態としてテストプラグを示す正面図(A)と部分断面側面図(B)である。They are a front view (A) and a partial cross-sectional side view (B) showing a test plug as a reference embodiment of the present invention. この発明の一つの実施の形態としてテストプラグを示す正面図(A)と部分断面側面図(B)である。As one embodiment of the present invention is a front view showing a test plug (A) and the partial cross-sectional side view (B). この発明のもう一つの実施の形態としてテストプラグを示す正面図(A)と部分断面側面図(B)である。The form also Cormorants one embodiment of the present invention is a front view showing a test plug (A) and the partial cross-sectional side view (B). 配管の機器取付端部の一つの形態を示す断面図であるIt is sectional drawing which shows one form of the apparatus attachment edge part of piping. 配管の機器取付端部の別の形態を示す断面図である。It is sectional drawing which shows another form of the apparatus attachment edge part of piping. 図4に示された配管の機器取付端部に蛇口が取付けられた状態を示す部分断面側面図である。It is a partial cross section side view which shows the state by which the faucet was attached to the apparatus attachment end part of piping shown by FIG. 図1のテストプラグが図4の配管の機器取付端部に取り付けられた状態を示す断面図(A)、テストプラグの先端部と給水栓継手の内周面との接触状態を示す部分段面図(B)、(C)である。1A is a cross-sectional view showing a state where the test plug of FIG. 1 is attached to the equipment attachment end of the pipe of FIG. 4, and a partial step surface showing a contact state between the tip of the test plug and the inner peripheral surface of the water tap joint It is figure (B) and (C). 図1のテストプラグが図5の配管の機器取付端部に取り付けられた状態を示す断面図、テストプラグの先端部と給水栓継手の内周面との接触状態を示す部分段面図(B)、(C)である。1 is a cross-sectional view showing a state in which the test plug of FIG. 1 is attached to the equipment attachment end of the pipe of FIG. 5, and a partial step view showing a contact state between the tip of the test plug and the inner peripheral surface of the water tap joint (B ), (C). 図2または図3のテストプラグが図4の配管の機器取付端部に取り付けられた状態を示す断面図である。It is sectional drawing which shows the state in which the test plug of FIG. 2 or FIG. 3 was attached to the apparatus attachment end part of piping of FIG. 図2または図3のテストプラグが図5の配管の機器取付端部に取り付けられた状態を示す断面図である。FIG. 6 is a cross-sectional view showing a state in which the test plug of FIG. 2 or FIG. 3 is attached to the equipment attachment end of the pipe of FIG. 5.

符号の説明Explanation of symbols

1,2:テストプラグ、3,4:配管の機器取付端部、110,210:栓本体、111,211:先端部、111a:テーパー面、112,212:ネジ部、113,213:中央部、114,214:把持部、120,220:筒状部材、211a:先端縁部、230,240:筒状先端部材、231:外周面、232:テーパー面、241:逆テーパー面。   1, 2: Test plugs, 3, 4: Equipment attachment end of piping, 110, 210: Plug body, 111, 211: Tip part, 111a: Tapered surface, 112, 212: Screw part, 113, 213: Center part 114, 214: gripping portion, 120, 220: cylindrical member, 211a: tip edge portion, 230, 240: cylindrical tip member, 231: outer peripheral surface, 232: tapered surface, 241: reverse tapered surface.

Claims (4)

配管の機器取付端部にねじ込みで固定することによって前記機器取付端部を一時的に閉塞するために脱着可能なテストプラグであって、
合成樹脂から形成された栓本体を備え、
前記栓本体は、先端部と、この先端部よりも基部側に連続して形成され、かつ、前記機器取付端部の雌ネジ部に螺合する雄ネジ部が外周に形成されたネジ部とを含み、さらに、
前記栓本体の先端部の外周面を被覆し、弾性変形可能な材料からなる筒状先端部材を備え、
前記筒状先端部材は、ほぼ円柱状に形成された外周面と、この外周面に連続して形成された端面とを有し、
前記栓本体の先端部は、前記筒状先端部材の内径よりも大きな外径を有する先端縁部を含む、テストプラグ。
A test plug that is detachable to temporarily close the device mounting end by screwing and fixing to the device mounting end of the pipe,
It has a plug body made of synthetic resin,
The plug body has a distal end portion and a thread portion formed continuously on the base side from the distal end portion, and a male thread portion that is threadedly engaged with the female thread portion of the device attachment end portion. Including,
Covering the outer peripheral surface of the distal end portion of the stopper main body, comprising a cylindrical tip member made of an elastically deformable material,
The cylindrical tip member has an outer peripheral surface formed in a substantially cylindrical shape, and an end surface formed continuously on the outer peripheral surface,
A test plug in which a tip portion of the plug body includes a tip edge portion having an outer diameter larger than an inner diameter of the cylindrical tip member.
前記筒状先端部材において前記外周面と前記端面との間には、テーパー面が形成されている、請求項に記載のテストプラグ。 The test plug according to claim 1 , wherein a tapered surface is formed between the outer peripheral surface and the end surface of the cylindrical tip member. 前記筒状先端部材の外周面は、先端側に向かうに従って外径が大きくなるように形成されている、請求項に記載のテストプラグ。 2. The test plug according to claim 1 , wherein an outer peripheral surface of the cylindrical tip member is formed so that an outer diameter increases toward the tip side. 前記栓本体は、基部側に形成された把持部を含み、さらに、
前記ネジ部と前記把持部との間に位置する前記栓本体の外周面を被覆し、弾性発泡体からなる筒状部材を備える、請求項から請求項までのいずれか1項に記載のテストプラグ。
The plug body includes a grip portion formed on the base side, and
The outer peripheral surface of the said stopper main body located between the said screw part and the said holding | grip part is provided, The cylindrical member which consists of an elastic foam is provided, The any one of Claim 1- Claim 3 provided. Test plug.
JP2006118854A 2006-04-24 2006-04-24 Test plug Expired - Fee Related JP4805718B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102313631A (en) * 2011-05-31 2012-01-11 山东力诺瑞特新能源有限公司 Water-testing seal plug and water testing method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5007200B2 (en) * 2007-10-31 2012-08-22 範八 松井 Test plug

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JPH0710692U (en) * 1993-07-28 1995-02-14 佐々木 茂行 Cover and terminal of terminal plug for pipe work
JP3698317B2 (en) * 2002-01-30 2005-09-21 協同バルブ商事株式会社 Plumbing test plug
JP4079222B2 (en) * 2003-04-25 2008-04-23 株式会社東興製作所 Test plug structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102313631A (en) * 2011-05-31 2012-01-11 山东力诺瑞特新能源有限公司 Water-testing seal plug and water testing method thereof
CN102313631B (en) * 2011-05-31 2013-05-08 山东力诺瑞特新能源有限公司 Water-testing seal plug and water testing method thereof

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