JP2017057894A - Nut for pipe joint made of synthetic resin, pipe joint, and fastening tool - Google Patents

Nut for pipe joint made of synthetic resin, pipe joint, and fastening tool Download PDF

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JP2017057894A
JP2017057894A JP2015181720A JP2015181720A JP2017057894A JP 2017057894 A JP2017057894 A JP 2017057894A JP 2015181720 A JP2015181720 A JP 2015181720A JP 2015181720 A JP2015181720 A JP 2015181720A JP 2017057894 A JP2017057894 A JP 2017057894A
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nut
pipe joint
tightening tool
union nut
synthetic resin
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JP6618741B2 (en
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睦 藤井
Mutsumi Fujii
睦 藤井
宮本　正樹
Masaki Miyamoto
正樹 宮本
俊英 飯田
Shunei Iida
俊英 飯田
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Nippon Pillar Packing Co Ltd
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Nippon Pillar Packing Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To enable a rotating operation of a nut for a pipe joint, of each pipe joint by a fastening tool even when the plurality of pipe joints are arranged at short intervals.SOLUTION: A nut 3 for pipe joint made of a synthetic resin, has a female screw portion 32 fastened to a male screw portion 22 formed on an outer periphery of a joint body 2 made of synthetic resin, and is rotated and operated to the joint body 2 by a fastening tool 10. An outer side face of the nut 3 for pipe joint is engaged with a projecting portion 13 disposed on the fastening tool 10, and is provided with a recessed portion 33 for rotating and operating the nut 3 for pipe joint by rotating the fastening tool 10 around an axis C of the nut 3 for pipe joint in a state that the projecting portion 13 is engaged.SELECTED DRAWING: Figure 5

Description

本発明は、合成樹脂製の管継手用ナット、管継手および締め付け工具に関する。   The present invention relates to a pipe joint nut, pipe joint, and tightening tool made of synthetic resin.

従来より、耐薬品性等が要求される配管経路においては、フッ素樹脂等の合成樹脂からなるチューブや管継手が採用されている。このような管継手として、チューブの先端部に装着される継手本体と、この継手本体の外周に形成された雄ねじ部に締め付けられる雌ねじ部を内周に有するユニオンナットとを備え、ユニオンナットを継手本体の外周に回転させながら締め付けることで、継手本体とチューブとのシール性能を確保する構造のものが多用されている。前記ユニオンナットを回転操作する工具として、ユニオンナットの外周に係合して回転操作するモンキーレンチや専用のスパナ等が知られている（例えば、特許文献１参照）。   Conventionally, tubes and pipe joints made of a synthetic resin such as a fluororesin have been employed in piping paths that require chemical resistance and the like. As such a pipe joint, it is provided with a joint body attached to the distal end portion of the tube, and a union nut having an internal thread portion tightened to a male thread portion formed on the outer periphery of the joint body on the inner periphery, and the union nut is a joint A structure having a structure that ensures the sealing performance between the joint body and the tube by tightening while rotating around the outer periphery of the body is often used. As a tool for rotating the union nut, there are known a monkey wrench, a dedicated spanner, and the like that engage with the outer periphery of the union nut and rotate (see, for example, Patent Document 1).

特開２０００−３５４９７３号公報JP 2000-354773 A

しかし、上記スパナ等にあっては、例えば図１２に示すように、管継手１００がその軸線Ｃ’と直交する方向に所定間隔をあけて複数配置されている場合には、隣り合う管継手１００同士の間には、一方の管継手１００のユニオンナット１０１の外周にスパナ２００を係合するための間隔Ｌ’を確保する必要がある。このため、複数の管継手１００を上記間隔Ｌ’よりも短い間隔で配置することができないという問題があった。   However, in the spanner or the like, for example, as shown in FIG. 12, when a plurality of pipe joints 100 are arranged at a predetermined interval in a direction orthogonal to the axis C ′, adjacent pipe joints 100 are arranged. It is necessary to ensure the space | interval L 'for engaging the spanner 200 in the outer periphery of the union nut 101 of one pipe joint 100 between them. For this reason, there existed a problem that the some pipe joint 100 could not be arrange | positioned by the space | interval shorter than the said space | interval L '.

本発明は前記問題点に鑑みてなされたものであり、複数の管継手が短い間隔で配置されていても、締め付け工具によって各管継手の管継手用ナットの回転操作を行うことができるようにすることを目的とする。   The present invention has been made in view of the above-described problems, so that even when a plurality of pipe joints are arranged at short intervals, the nuts for pipe joints of each pipe joint can be rotated by a tightening tool. The purpose is to do.

本発明の合成樹脂製の管継手用ナットは、合成樹脂製の継手本体の外周に形成された雄ねじ部に締め付けられる雌ねじ部を内周に有し、締め付け工具によって前記継手本体に対して回転操作される合成樹脂製の管継手用ナットであって、前記管継手用ナットの外側面には、前記締め付け工具に設けられた突出部が係合されるとともに前記突出部が係合された状態で前記締め付け工具を前記管継手用ナットの軸線回りに回転させることで前記管継手用ナットを回転操作するための凹部が形成されていることを特徴としている。   The nut for pipe joint made of synthetic resin of the present invention has a female screw portion tightened on the male screw portion formed on the outer periphery of the synthetic resin joint body on the inner periphery, and is rotated with respect to the joint main body by a tightening tool. A pipe joint nut made of synthetic resin, wherein a protrusion provided on the tightening tool is engaged with an outer surface of the pipe joint nut and the protrusion is engaged. A recess for rotating the fitting nut is formed by rotating the tightening tool around the axis of the fitting nut.

また、本発明の管継手は、外周に雄ねじ部が形成された合成樹脂製の継手本体と、上記合成樹脂製の管継手用ナットと、を備えることを特徴としている。   Moreover, the pipe joint of the present invention is characterized by including a synthetic resin joint body having a male thread portion formed on the outer periphery thereof, and the synthetic resin pipe joint nut.

また、本発明の締め付け工具は、合成樹脂製の継手本体の外周に形成された雄ねじ部に締め付けられる雌ねじ部を内周に有する合成樹脂製の管継手用ナットを、前記継手本体に対して回転操作する締め付け工具であって、前記管継手用ナットの外側面に形成された凹部に係合されるとともに、前記凹部に係合された状態で前記締め付け工具を前記管継手用ナットの軸線回りに回転させることで前記管継手用ナットを回転操作するための突出部を備えることを特徴としている。   Further, the tightening tool of the present invention rotates a synthetic resin pipe fitting nut having an internal thread portion tightened to an external thread portion formed on an outer periphery of a synthetic resin joint body with respect to the joint body. A tightening tool to be operated, wherein the tightening tool is engaged with a recess formed on an outer surface of the pipe joint nut, and the tightening tool is rotated about the axis of the pipe joint nut in a state of being engaged with the recess. A protrusion is provided for rotating the pipe joint nut by rotating it.

本発明の合成樹脂製の管継手用ナット、管継手および締め付け工具によれば、管継手用ナットの外側面に形成された凹部に締め付け工具の突出部を係合した状態で、締め付け工具を管継手用ナットの軸線回りに回転することで、継手本体に対して管継手用ナットを回転操作することができる。したがって、複数の管継手が短い間隔で配置されていても、締め付け工具によって各管継手の管継手用ナットの回転操作を行うことができる。   According to the pipe joint nut, pipe joint, and tightening tool made of the synthetic resin of the present invention, the tightening tool is inserted into the tube while the protrusion of the tightening tool is engaged with the recess formed on the outer surface of the pipe joint nut. By rotating around the joint nut axis, the pipe joint nut can be rotated with respect to the joint body. Therefore, even if a plurality of pipe joints are arranged at short intervals, the nuts for pipe joints of each pipe joint can be rotated by the tightening tool.

本発明によれば、複数の管継手が短い間隔で配置されていても、締め付け工具によって各管継手の管継手用ナットの回転操作を行うことができる。   According to the present invention, even if a plurality of pipe joints are arranged at short intervals, the nuts for pipe joints of each pipe joint can be rotated by the tightening tool.

本発明の第１実施形態に係る管継手を示す断面図である。It is sectional drawing which shows the pipe joint which concerns on 1st Embodiment of this invention. 上記管継手を軸方向外側から見た正面図である。It is the front view which looked at the said pipe joint from the axial direction outer side. 上記管継手の継手本体に対してユニオンナットを回転操作する締め付け工具を示しており、（ａ）は正面図、（ｂ）は側面図である。The tightening tool which rotates a union nut with respect to the coupling main body of the said pipe coupling is shown, (a) is a front view, (b) is a side view. 上記締め付け工具を上記ユニオンナットに係合した状態を示す断面図である。It is sectional drawing which shows the state which engaged the said clamping tool with the said union nut. 上記締め付け工具によりユニオンナットを締め付け方向に回転操作する状態を軸方向外側から見た正面図である。It is the front view which looked at the state which rotates a union nut in the tightening direction with the said clamping tool from the axial direction outer side. 上記締め付け工具によりユニオンナットを反締め付け方向に回転操作する状態を軸方向外側から見た正面図である。It is the front view which looked at the state which rotates a union nut in the anti-tightening direction with the said clamping tool from the axial direction outer side. 複数の上記管継手を軸方向外側から見た正面図である。It is the front view which looked at the above-mentioned plurality of pipe joints from the axial direction outside. （ａ）は本発明の第２実施形態に係る締め付け工具を示す斜視図であり、（ｂ）は本発明の第２実施形態に係る管継手を示す斜視図である。(A) is a perspective view which shows the clamping tool which concerns on 2nd Embodiment of this invention, (b) is a perspective view which shows the pipe joint which concerns on 2nd Embodiment of this invention. 第２実施形態の締め付け工具によりユニオンナットを締め付け方向に回転操作する状態を示す斜視図である。It is a perspective view which shows the state which rotates a union nut in the clamping direction with the clamping tool of 2nd Embodiment. （ａ）は本発明の第３実施形態に係る締め付け工具を示す斜視図であり、（ｂ）は本発明の第３実施形態に係る管継手を示す斜視図である。(A) is a perspective view which shows the fastening tool which concerns on 3rd Embodiment of this invention, (b) is a perspective view which shows the pipe joint which concerns on 3rd Embodiment of this invention. 第３実施形態の締め付け工具によりユニオンナットを締め付け方向に回転操作する状態を示す斜視図である。It is a perspective view which shows the state which rotates a union nut in the clamping direction with the clamping tool of 3rd Embodiment. 従来の複数の管継手を軸方向外側から見た正面図である。It is the front view which looked at the conventional several pipe joint from the axial direction outer side.

以下、本発明の管継手の実施形態を図面に基づいて説明する。
図１は、本発明の第１実施形態に係る管継手を示す断面図である。図１において、管継手１は、合成樹脂（ＰＦＡ等）製のチューブ６の先端部の外周側に装着される合成樹脂製の継手本体２と、この継手本体２の軸方向両端部の外周側に装着される合成樹脂（ＰＦＡ等）製の一対のユニオンナット（管継手用ナット）３とを備えている。
なお、本明細書においては、継手本体２の軸方向中央から軸方向両側に向かう方向を軸方向外方（軸方向外側）といい、継手本体２の軸方向両側から軸方向中央に向かう方向を軸方向内方（軸方向内側）という。 Hereinafter, an embodiment of a pipe joint of the present invention is described based on a drawing.
FIG. 1 is a cross-sectional view showing a pipe joint according to the first embodiment of the present invention. In FIG. 1, a pipe joint 1 includes a synthetic resin joint body 2 mounted on the outer peripheral side of a distal end portion of a tube 6 made of synthetic resin (PFA or the like), and an outer peripheral side of both axial ends of the joint main body 2. And a pair of union nuts (nuts for pipe fittings) 3 made of synthetic resin (PFA or the like).
In this specification, the direction from the axial center of the joint body 2 toward both axial sides is referred to as axially outward (axially outside), and the direction from the both axial sides of the joint body 2 toward the axial center. It is called axially inward (axially inner).

継手本体２は、ＰＶＣ、ＰＰ、ＰＥ又はフッ素樹脂（ＰＡＦ又はＰＴＦＥ等）の合成樹脂材料によって、円筒状に形成されている。継手本体２の軸方向外側の端部には受口部２１が形成されており、この受口部２１の内周に、チューブ６の先端部内周に無理嵌めされたインナーリング４が嵌合されるようになっている。これにより、継手本体２の軸方向外側の端部を、チューブ６の先端部の外周に装着することができる。受口部２１の外周には、雄ねじ部２２が形成されている。   The joint body 2 is formed in a cylindrical shape by a synthetic resin material such as PVC, PP, PE, or fluororesin (PAF or PTFE or the like). A receiving portion 21 is formed at the end of the joint body 2 in the axial direction, and the inner ring 4 that is forcibly fitted to the inner periphery of the distal end portion of the tube 6 is fitted to the inner periphery of the receiving portion 21. It has become so. Thereby, the axially outer end of the joint body 2 can be attached to the outer periphery of the distal end of the tube 6. A male screw portion 22 is formed on the outer periphery of the receiving portion 21.

ユニオンナット３は、継手本体２と同様に、ＰＶＣ、ＰＰ、ＰＥ又はフッ素樹脂（ＰＡＦ又はＰＴＦＥ等）の合成樹脂材料によって、円筒状に形成されている。ユニオンナット３の内径はチューブ６の外径よりも大きく形成されており、チューブ６の先端部に継手本体２を装着する際に、ユニオンナット３にチューブ６の先端部が挿入されるようになっている。   The union nut 3 is formed in a cylindrical shape by a synthetic resin material such as PVC, PP, PE, or a fluororesin (PAF or PTFE or the like), like the joint body 2. The inner diameter of the union nut 3 is formed larger than the outer diameter of the tube 6, and when the joint body 2 is attached to the distal end portion of the tube 6, the distal end portion of the tube 6 is inserted into the union nut 3. ing.

ユニオンナット３は、軸方向外側の端部において径方向内方に突出して形成された押圧部３１と、軸方向内側の端部の内周に形成された雌ねじ部３２とを有している。雌ねじ部３２は、継手本体２の雄ねじ部２２に締め付け可能であり、この締め付けによってユニオンナット３を継手本体２に装着することができる。その際、ユニオンナット３の押圧部３１における軸方向内側の端部が、インナーリング４によって径方向外側に膨らむチューブ６の膨出部６ａを押圧するようになっている。   The union nut 3 has a pressing portion 31 formed to protrude radially inward at an end portion on the outer side in the axial direction, and a female screw portion 32 formed on the inner periphery of the end portion on the inner side in the axial direction. The female thread portion 32 can be tightened to the male thread portion 22 of the joint body 2, and the union nut 3 can be attached to the joint body 2 by this tightening. At that time, the axially inner end of the pressing portion 31 of the union nut 3 presses the bulging portion 6 a of the tube 6 bulging radially outward by the inner ring 4.

したがって、ユニオンナット３の雌ねじ部３２を継手本体２の雄ねじ部２２に締め付けることで、継手本体２の受口部２１とチューブ６との装着箇所のシール性能を確保することができるとともに、チューブ６の抜け出しを防止することができる。
なお、チューブ６の先端部に対する継手本体２の装着構造は、上述のようにインナーリング４を用いたインナーリングタイプ以外に、フレアタイプやフェルールタイプなど他の装着構造としてもよい。 Therefore, by tightening the female thread portion 32 of the union nut 3 to the male thread portion 22 of the joint body 2, it is possible to ensure the sealing performance of the attachment portion between the receiving portion 21 of the joint body 2 and the tube 6, and the tube 6. Can be prevented from coming out.
In addition, the attachment structure of the joint main body 2 with respect to the front-end | tip part of the tube 6 is good also as other attachment structures, such as a flare type and a ferrule type, other than the inner ring type using the inner ring 4 as mentioned above.

図２は、管継手１を軸方向外側から見た正面図である。図１及び図２において、ユニオンナット３の外側面には、後述する締め付け工具１０の突出部１３が係合される凹部３３が周方向に所定間隔をあけて複数（図例では１２個）形成されている。本実施形態の凹部３３は、側面視において略台形形状に形成されており、周方向両側には径方向に延びる第１当接面３３ａ及び第２当接面３３ｂが形成されている。   FIG. 2 is a front view of the pipe joint 1 as viewed from the outside in the axial direction. 1 and 2, the outer surface of the union nut 3 is formed with a plurality of recesses 33 (12 in the illustrated example) at predetermined intervals in the circumferential direction to which protrusions 13 of a tightening tool 10 described later are engaged. Has been. The concave portion 33 of the present embodiment is formed in a substantially trapezoidal shape in a side view, and a first contact surface 33a and a second contact surface 33b extending in the radial direction are formed on both sides in the circumferential direction.

図３は、継手本体２に対してユニオンナット３を回転操作する締め付け工具１０を示しており、（ａ）は正面図、（ｂ）は側面図である。図３（ａ）及び（ｂ）において、締め付け工具１０は、正面視において略半円弧形状に形成された平板部材からなる工具本体１１と、工具本体１１の周方向両端部の外周から径方向外方に延びる一対の取手１２とを備えている。   FIG. 3 shows a tightening tool 10 for rotating the union nut 3 with respect to the joint body 2, wherein (a) is a front view and (b) is a side view. 3 (a) and 3 (b), the tightening tool 10 includes a tool body 11 made of a flat plate member formed in a substantially semicircular arc shape when viewed from the front, and a radially outer side from the outer periphery of both end portions in the circumferential direction of the tool body 11. And a pair of handles 12 extending in the direction.

工具本体１１の内径は、チューブ６の外径よりも大きく設定されており（図５参照）、締め付け工具１０によりユニオンナット３を回転操作するときに工具本体１１の内周部がチューブ６と干渉するのを防止している。工具本体１１の一側面には、軸方向に突出する突出部１３が周方向に所定間隔をあけて複数（図例では４個）固定されている。本実施形態の突出部１３は、正面視において略台形状に形成されており、図４に示すように、締め付け工具１０によりユニオンナット３を回転操作するときに、ユニオンナット３の凹部３３に挿入して係合される。   The inner diameter of the tool body 11 is set to be larger than the outer diameter of the tube 6 (see FIG. 5), and the inner peripheral portion of the tool body 11 interferes with the tube 6 when the union nut 3 is rotated by the tightening tool 10. Is prevented. A plurality (four in the illustrated example) of protrusions 13 protruding in the axial direction are fixed to one side surface of the tool body 11 at a predetermined interval in the circumferential direction. The protrusion 13 of the present embodiment is formed in a substantially trapezoidal shape when viewed from the front, and is inserted into the recess 33 of the union nut 3 when the union nut 3 is rotated by the tightening tool 10 as shown in FIG. Engaged.

図５は、締め付け工具１０によりユニオンナット３を締め付け方向に回転操作する状態を軸方向外側から見た正面図である。図５に示す状態において、締め付け工具１０の各突出部１３の一側面１３ａは、ユニオンナット３の対応する凹部３３の第１当接面３３ａに対して面接触により当接して係合されている。この状態から締め付け工具１０の取手１２を把持し、締め付け工具１０をユニオンナット３の軸線Ｃを中心として図５の時計回り方向に回転させると、締め付け工具１０と共にユニオンナット３が前記時計回り方向に回転する。これにより、ユニオンナット３を継手本体２に対して締め付け方向に回転操作することができる。   FIG. 5 is a front view of the state in which the union nut 3 is rotated in the tightening direction by the tightening tool 10 as viewed from the outside in the axial direction. In the state shown in FIG. 5, one side surface 13 a of each protrusion 13 of the tightening tool 10 is brought into contact with and engaged with the first contact surface 33 a of the corresponding recess 33 of the union nut 3 by surface contact. . When the handle 12 of the tightening tool 10 is gripped from this state and the tightening tool 10 is rotated in the clockwise direction in FIG. 5 about the axis C of the union nut 3, the union nut 3 is moved in the clockwise direction together with the tightening tool 10. Rotate. Thereby, the union nut 3 can be rotated with respect to the joint main body 2 in the tightening direction.

図６は、締め付け工具１０によりユニオンナット３を反締め付け方向に回転操作する状態を軸方向外側から見た正面図である。図６に示す状態において、締め付け工具１０の各突出部１３の他側面１３ｂは、ユニオンナット３の対応する凹部３３の第２当接面３３ｂに対して面接触により当接して係合されている。なお、図５に示す状態から、締め付け工具１０を軸線Ｃを中心として図５の反時計回り方向に回転させると、突出部１３が凹部３３内を前記反時計回り方向に移動することによって図６に示す状態とすることができる。   FIG. 6 is a front view of the state in which the union nut 3 is rotated in the counter-tightening direction by the tightening tool 10 as viewed from the outside in the axial direction. In the state shown in FIG. 6, the other side surface 13 b of each protrusion 13 of the tightening tool 10 is brought into contact with and engaged with the second contact surface 33 b of the corresponding recess 33 of the union nut 3 by surface contact. . When the tightening tool 10 is rotated about the axis C in the counterclockwise direction in FIG. 5 from the state shown in FIG. 5, the protrusion 13 moves in the recess 33 in the counterclockwise direction as shown in FIG. The state shown in FIG.

図６に示す状態から、締め付け工具１０の取手１２を把持し、締め付け工具１０をユニオンナット３の軸線Ｃを中心として図６の反時計回り方向に回転させると、締め付け工具１０と共にユニオンナット３が前記反時計回り方向に回転する。これにより、ユニオンナット３を継手本体２に対して反締め付け方向に回転操作することができる。   When the handle 12 of the tightening tool 10 is gripped from the state shown in FIG. 6 and the tightening tool 10 is rotated counterclockwise in FIG. 6 about the axis C of the union nut 3, the union nut 3 is moved together with the tightening tool 10. It rotates in the counterclockwise direction. Thereby, the union nut 3 can be rotated with respect to the joint main body 2 in the anti-tightening direction.

上記のように構成された本実施形態の管継手１、ユニオンナット３及び締め付け工具１０によれば、ユニオンナット３の外側面に形成された凹部３３に締め付け工具１０の突出部１３を係合した状態で、締め付け工具１０をユニオンナット３の軸線Ｃ回りに回転することで、継手本体２に対してユニオンナット３を回転操作することができる。したがって、図７に示すように、複数の管継手１が、軸線Ｃに対して直交する方向において、従来の間隔Ｌ’よりも短い間隔Ｌで配置されていても、締め付け工具１０によって各管継手１のユニオンナット３の回転操作を行うことができる。   According to the pipe joint 1, the union nut 3, and the tightening tool 10 of the present embodiment configured as described above, the protrusion 13 of the tightening tool 10 is engaged with the recess 33 formed on the outer surface of the union nut 3. In this state, the union nut 3 can be rotated with respect to the joint body 2 by rotating the tightening tool 10 around the axis C of the union nut 3. Therefore, as shown in FIG. 7, even if the plurality of pipe joints 1 are arranged at intervals L shorter than the conventional interval L ′ in the direction orthogonal to the axis C, each pipe joint 1 is operated by the tightening tool 10. One union nut 3 can be rotated.

図８（ａ）は、本発明の第２実施形態に係る締め付け工具１０を示す斜視図であり、図８（ｂ）は、本発明の第２実施形態に係る管継手１を示す斜視図である。本実施形態では、ユニオンナット３の凹部の形状、および締め付け工具１０の突出部の形状がそれぞれ異なる点で第１実施形態と相違する。   Fig.8 (a) is a perspective view which shows the clamping tool 10 which concerns on 2nd Embodiment of this invention, FIG.8 (b) is a perspective view which shows the pipe joint 1 which concerns on 2nd Embodiment of this invention. is there. This embodiment is different from the first embodiment in that the shape of the concave portion of the union nut 3 and the shape of the protruding portion of the tightening tool 10 are different from each other.

図８（ｂ）において、本実施形態の管継手１におけるユニオンナット３の外側面には、径方向内側において周方向に延びる内側凹部３４と、径方向外側において周方向に延びる外側凹部３５とが、それぞれ周方向に所定間隔をあけて複数（図例では６個ずつ）形成されている。
本実施形態の内側及び外側凹部３４，３５は、ユニオンナット３の軸線Ｃを中心として円弧形状に形成されており、それぞれの周方向両側には、第１当接面３４ａ，３５ａ及び第２当接面３４ｂ，３５ｂが形成されている。 In FIG. 8 (b), on the outer surface of the union nut 3 in the pipe joint 1 of the present embodiment, there are an inner recessed portion 34 extending in the circumferential direction on the radially inner side and an outer recessed portion 35 extending in the circumferential direction on the radially outer side. A plurality (six in the illustrated example) are formed at predetermined intervals in the circumferential direction.
The inner and outer recesses 34 and 35 of the present embodiment are formed in an arc shape with the axis C of the union nut 3 as the center, and the first abutment surfaces 34a and 35a and the second abutment are provided on both sides in the circumferential direction. Contact surfaces 34b and 35b are formed.

図８（ａ）において、本実施形態の締め付け工具１０における工具本体１１の一側面には、径方向内側において軸方向に突出する内側突出部１４と、径方向外側において軸方向に突出する外側突出部１５とが、周方向に所定間隔をあけて複数（図例では４個ずつ）固定されている。
本実施形態の複数の内側及び外側突出部１４，１５は、円柱形状に形成されており、締め付け工具１０によりユニオンナット３を回転操作するときに、ユニオンナット３の内側及び外側凹部３４，３５にそれぞれ挿入して係合される。 In FIG. 8A, on one side surface of the tool body 11 in the tightening tool 10 of the present embodiment, an inner projecting portion 14 projecting in the axial direction on the radially inner side and an outer projecting projecting in the axial direction on the radially outer side. A plurality of parts 15 (four in the illustrated example) are fixed at predetermined intervals in the circumferential direction.
The plurality of inner and outer protrusions 14, 15 of the present embodiment are formed in a cylindrical shape, and when the union nut 3 is rotated by the tightening tool 10, the inner and outer recesses 34, 35 of the union nut 3 are formed. Each is inserted and engaged.

図９は、締め付け工具１０によりユニオンナット３を締め付け方向に回転操作する状態を示す斜視図である。図９に示す状態において、締め付け工具１０の内側及び外側突出部１４，１５は、ユニオンナット３の対応する内側及び外側凹部３４，３５の第１当接面３４ａ，３５ａに当接して係合されている。この状態から締め付け工具１０の取手１２を把持し、締め付け工具１０を軸線Ｃを中心として図９の時計回り方向（図中の矢印Ａ方向）に回転させると、締め付け工具１０と共にユニオンナット３が前記時計回り方向に回転する。これにより、ユニオンナット３を継手本体２に対して締め付け方向に回転操作することができる。   FIG. 9 is a perspective view showing a state in which the union nut 3 is rotated in the tightening direction by the tightening tool 10. In the state shown in FIG. 9, the inner and outer protrusions 14 and 15 of the tightening tool 10 are brought into contact with and engaged with the first contact surfaces 34 a and 35 a of the corresponding inner and outer recesses 34 and 35 of the union nut 3. ing. When the handle 12 of the tightening tool 10 is gripped from this state and the tightening tool 10 is rotated about the axis C in the clockwise direction of FIG. 9 (in the direction of arrow A in the figure), the union nut 3 is moved together with the tightening tool 10. Rotate clockwise. Thereby, the union nut 3 can be rotated with respect to the joint main body 2 in the tightening direction.

また、図９に示す状態から、締め付け工具１０の取手１２を把持し、締め付け工具１０を軸線Ｃを中心として図９の反時計回り方向（図中の矢印Ｂ方向）に回転させると、締め付け工具１０の内側及び外側突出部１４，１５は、ユニオンナット３の対応する内側及び外側凹部３４，３５内を移動し、第２当接面３４ｂ，３５ｂに当接して係合された状態となる。この状態から、締め付け工具１０をさらに前記反時計回り方向に回転させると、締め付け工具１０と共にユニオンナット３が前記反時計回り方向に回転する。これにより、ユニオンナット３を継手本体２に対して反締め付け方向に回転操作することができる。なお、第２実施形態において説明を省略した点は、第１実施形態と同様である。   Further, when the handle 12 of the tightening tool 10 is gripped from the state shown in FIG. 9 and the tightening tool 10 is rotated about the axis C in the counterclockwise direction of FIG. The inner and outer protrusions 14 and 15 of 10 move in the corresponding inner and outer recesses 34 and 35 of the union nut 3, and are brought into contact with and engaged with the second contact surfaces 34b and 35b. When the tightening tool 10 is further rotated in the counterclockwise direction from this state, the union nut 3 is rotated in the counterclockwise direction together with the tightening tool 10. Thereby, the union nut 3 can be rotated with respect to the joint main body 2 in the anti-tightening direction. In addition, the point which abbreviate | omitted description in 2nd Embodiment is the same as that of 1st Embodiment.

上記のように構成された本実施形態の管継手１、ユニオンナット３及び締め付け工具１０においても、ユニオンナット３の外側面に形成された凹部３４，３５に締め付け工具１０の突出部１４，１５を係合した状態で、締め付け工具１０をユニオンナット３の軸線Ｃ回りに回転することで、継手本体２に対してユニオンナット３を回転操作することができる。したがって、複数の管継手１が、軸線Ｃに対して直交する方向において、従来の間隔Ｌ’よりも短い間隔Ｌで配置されていても（図７参照）、締め付け工具１０によって各管継手１のユニオンナット３の回転操作を行うことができる。   Also in the pipe joint 1, the union nut 3 and the tightening tool 10 of the present embodiment configured as described above, the protrusions 14 and 15 of the tightening tool 10 are provided in the recesses 34 and 35 formed on the outer surface of the union nut 3. In the engaged state, the union nut 3 can be rotated with respect to the joint body 2 by rotating the tightening tool 10 around the axis C of the union nut 3. Therefore, even if the plurality of pipe joints 1 are arranged at intervals L shorter than the conventional interval L ′ in the direction orthogonal to the axis C (see FIG. 7), the fastening tools 10 can The rotation operation of the union nut 3 can be performed.

図１０（ａ）は、本発明の第３実施形態に係る締め付け工具１０を示す斜視図であり、図１０（ｂ）は、本発明の第３実施形態に係る管継手１を示す斜視図である。本実施形態では、ユニオンナット３の凹部の形状、および締め付け工具１０の突出部の形状がそれぞれ異なる点で第１実施形態と相違する。   FIG. 10A is a perspective view showing a tightening tool 10 according to a third embodiment of the present invention, and FIG. 10B is a perspective view showing a pipe joint 1 according to the third embodiment of the present invention. is there. This embodiment is different from the first embodiment in that the shape of the concave portion of the union nut 3 and the shape of the protruding portion of the tightening tool 10 are different from each other.

図１０（ｂ）において、本実施形態の管継手１におけるユニオンナット３の外側面には、環状の凹部３６が形成されている。凹部３６の外周壁には、径方向内方に突出する複数（図例では８個）の係合部３７が周方向に所定間隔をあけて一体に形成されている。本実施形態の係合部３７は、直方体形状に形成されており、周方向の両側面は、締め付け工具１０の係合部１６ｂ（後述）が当接する第１当接面３７ａ及び第２当接面３７ｂとされている。   In FIG.10 (b), the annular recessed part 36 is formed in the outer surface of the union nut 3 in the pipe joint 1 of this embodiment. A plurality (eight in the illustrated example) of engaging portions 37 protruding inward in the radial direction are integrally formed on the outer peripheral wall of the recess 36 at a predetermined interval in the circumferential direction. The engaging portion 37 of the present embodiment is formed in a rectangular parallelepiped shape, and both side surfaces in the circumferential direction are provided with a first abutting surface 37a and a second abutting surface on which engaging portions 16b (described later) of the tightening tool 10 abut. It is set as the surface 37b.

図１０（ａ）において、本実施形態の締め付け工具１０における工具本体１１の一側面には、軸方向に突出する突出部１６が固定されている。突出部１６は、工具本体１１の周方向全体に亘って延びる円弧形状の基部１６ａの外周から、径方向外方に突出する複数（図例では５個）の係合部１６ｂが周方向に所定間隔をあけて一体に形成されてなる。   In FIG. 10A, a protruding portion 16 protruding in the axial direction is fixed to one side surface of the tool body 11 in the tightening tool 10 of the present embodiment. The projecting portion 16 has a plurality of (five in the illustrated example) engaging portions 16b that project radially outward from the outer periphery of the arc-shaped base portion 16a extending over the entire circumferential direction of the tool body 11 in the circumferential direction. It is integrally formed with an interval.

突出部１６は、締め付け工具１０によりユニオンナット３を回転操作するときに、ユニオンナット３の凹部３６に挿入して係合される。その際、突出部１６の基部１６ａは、凹部３６の係合部３７よりも径方向内方に挿入され、突出部１６の各係合部１６ｂは、凹部３６の周方向に隣り合う係合部３７同士の間に挿入される。   The protrusion 16 is inserted into and engaged with the recess 36 of the union nut 3 when the union nut 3 is rotated by the tightening tool 10. At that time, the base portion 16 a of the protruding portion 16 is inserted radially inward from the engaging portion 37 of the recessed portion 36, and each engaging portion 16 b of the protruding portion 16 is adjacent to the engaging portion in the circumferential direction of the recessed portion 36. 37 is inserted between each other.

図１１は、締め付け工具１０によりユニオンナット３を締め付け方向に回転操作する状態を示す斜視図である。図１１に示す状態において、締め付け工具１０の突出部１６の各係合部１６ｂは、ユニオンナット３の凹部３６内において対応する係合部３７の第１当接面３７ａに対して面接触により当接して係合されている。この状態から締め付け工具１０の取手１２を把持し、締め付け工具１０を軸線Ｃを中心として図１１の時計回り方向（図中の矢印Ａ方向）に回転させると、締め付け工具１０と共にユニオンナット３が前記時計回り方向に回転する。これにより、ユニオンナット３を継手本体２に対して締め付け方向に回転操作することができる。   FIG. 11 is a perspective view showing a state in which the union nut 3 is rotated in the tightening direction by the tightening tool 10. In the state shown in FIG. 11, each engaging portion 16 b of the protruding portion 16 of the tightening tool 10 is brought into contact with the first contact surface 37 a of the corresponding engaging portion 37 in the concave portion 36 of the union nut 3 by surface contact. Engaged in contact. From this state, when the handle 12 of the tightening tool 10 is gripped and the tightening tool 10 is rotated about the axis C in the clockwise direction of FIG. 11 (in the direction of arrow A in the figure), the union nut 3 is moved together with the tightening tool 10. Rotate clockwise. Thereby, the union nut 3 can be rotated with respect to the joint main body 2 in the tightening direction.

また、図１１に示す状態から、締め付け工具１０の取手１２を把持し、締め付け工具１０を軸線Ｃを中心として図１１の反時計回り方向（図中の矢印Ｂ方向）に回転させると、締め付け工具１０の突出部１６の各係合部１６ｂは、ユニオンナット３の凹部３６内を移動し、対応する係合部３７の第２当接面３７ｂに対して面接触により当接して係合された状態となる。この状態から、締め付け工具１０をさらに前記反時計回り方向に回転させると、締め付け工具１０と共にユニオンナット３が前記反時計回り方向に回転する。これにより、ユニオンナット３を継手本体２に対して反締め付け方向に回転操作することができる。なお、第３実施形態において説明を省略した点は、第１実施形態と同様である。   When the handle 12 of the tightening tool 10 is gripped from the state shown in FIG. 11 and the tightening tool 10 is rotated about the axis C in the counterclockwise direction of FIG. Each of the engaging portions 16b of the ten protruding portions 16 moved in the recess 36 of the union nut 3 and engaged with the second abutting surface 37b of the corresponding engaging portion 37 by surface contact. It becomes a state. When the tightening tool 10 is further rotated in the counterclockwise direction from this state, the union nut 3 is rotated in the counterclockwise direction together with the tightening tool 10. Thereby, the union nut 3 can be rotated with respect to the joint main body 2 in the anti-tightening direction. In addition, the point which abbreviate | omitted description in 3rd Embodiment is the same as that of 1st Embodiment.

上記のように構成された本実施形態の管継手１、ユニオンナット３及び締め付け工具１０においても、ユニオンナット３の外側面に形成された凹部３６の係合部３７に締め付け工具１０の突出部１６の係合部１６ｂを係合した状態で、締め付け工具１０をユニオンナット３の軸線Ｃ回りに回転することで、継手本体２に対してユニオンナット３を回転操作することができる。したがって、複数の管継手１が、軸線Ｃに対して直交する方向において、従来の間隔Ｌ’よりも短い間隔Ｌで配置されていても（図７参照）、締め付け工具１０によって各管継手１のユニオンナット３の回転操作を行うことができる。   Also in the pipe joint 1, the union nut 3, and the tightening tool 10 of the present embodiment configured as described above, the protrusion 16 of the tightening tool 10 is engaged with the engaging portion 37 of the recess 36 formed on the outer surface of the union nut 3. The union nut 3 can be rotated with respect to the joint body 2 by rotating the tightening tool 10 around the axis C of the union nut 3 with the engaging portion 16b engaged. Therefore, even if the plurality of pipe joints 1 are arranged at intervals L shorter than the conventional interval L ′ in the direction orthogonal to the axis C (see FIG. 7), the fastening tools 10 can The rotation operation of the union nut 3 can be performed.

なお、今回開示された実施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えられるべきである。本発明の範囲は、上記した意味ではなく、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、及び範囲内でのすべての変更が含まれることが意図される。
例えば、上記実施形態におけるユニオンナット３の凹部３３〜３５及び係合部３７は、締め付け工具１０の突出部１３〜１５及び係合部１６ｂの個数よりも多く形成されているが、突出部１３〜１５及び係合部１６ｂの個数と同数個形成されていてもよい。
また、継手本体２の形状は、図１に示すような軸方向両端部にチューブ６の受口を有するストレート型に限らず、エルボ型、チーズ型等の他の形状であってもよい。上記のように構成された管継手は、少なくとも複数の管継手の一端部を間隔を詰めて並べて配置する場合に好適である。 The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the meanings described above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.
For example, although the recessed parts 33-35 and the engaging part 37 of the union nut 3 in the said embodiment are formed more than the number of the protrusion parts 13-15 of the clamping tool 10, and the engaging part 16b, the protrusion parts 13- The same number as 15 and the number of the engaging portions 16b may be formed.
Further, the shape of the joint body 2 is not limited to a straight type having both ends of the axial direction of the tube 6 as shown in FIG. 1, but may be other shapes such as an elbow type and a cheese type. The pipe joint configured as described above is suitable for the case where at least one end of a plurality of pipe joints is arranged side by side at close intervals.

１ 管継手
２ 継手本体
３ ユニオンナット（管継手用ナット）
１０ 締め付け工具
１３〜１６ 突出部
２２ 雄ねじ部
３２ 雌ねじ部
３３〜３６ 凹部
Ｃ 軸線 1 Pipe Fitting 2 Fitting Body 3 Union Nut (Nut for Pipe Fitting)
DESCRIPTION OF SYMBOLS 10 Tightening tool 13-16 Protrusion part 22 Male thread part 32 Female thread part 33-36 Recessed part C Axis

Claims (3)

合成樹脂製の継手本体の外周に形成された雄ねじ部に締め付けられる雌ねじ部を内周に有し、締め付け工具によって前記継手本体に対して回転操作される合成樹脂製の管継手用ナットであって、
前記管継手用ナットの外側面には、前記締め付け工具に設けられた突出部が係合されるとともに前記突出部が係合された状態で前記締め付け工具を前記管継手用ナットの軸線回りに回転させることで前記管継手用ナットを回転操作するための凹部が形成されていることを特徴とする合成樹脂製の管継手用ナット。 A synthetic resin pipe fitting nut that has a female screw portion to be fastened to a male screw portion formed on the outer periphery of a synthetic resin joint body on the inner circumference and is rotated with respect to the joint body by a tightening tool. ,
A protrusion provided on the tightening tool is engaged with an outer surface of the nut for pipe fitting, and the tightening tool is rotated about the axis of the nut for pipe fitting while the protrusion is engaged. A synthetic resin pipe fitting nut is characterized in that a recess for rotating the pipe fitting nut is formed. 外周に雄ねじ部が形成された合成樹脂製の継手本体と、
請求項１に記載の合成樹脂製の管継手用ナットと、を備える管継手。 A joint body made of a synthetic resin having a male thread formed on the outer periphery;
A pipe joint comprising the pipe joint nut made of synthetic resin according to claim 1. 合成樹脂製の継手本体の外周に形成された雄ねじ部に締め付けられる雌ねじ部を内周に有する合成樹脂製の管継手用ナットを、前記継手本体に対して回転操作する締め付け工具であって、
前記管継手用ナットの外側面に形成された凹部に係合されるとともに、前記凹部に係合された状態で前記締め付け工具を前記管継手用ナットの軸線回りに回転させることで前記管継手用ナットを回転操作するための突出部を備えることを特徴とする締め付け工具。 A nut for a pipe joint made of synthetic resin having a female thread part tightened on a male thread part formed on the outer periphery of a joint body made of synthetic resin on the inner periphery, a tightening tool for rotating the joint body,
The fitting is engaged with a recess formed on the outer surface of the fitting nut, and the fastening tool is rotated around the axis of the fitting nut while being engaged with the depression. A clamping tool comprising a protrusion for rotating a nut.
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JP2021011908A (en) * 2019-07-05 2021-02-04 株式会社キッツ Cap and valve, and fixture
CN114738570A (en) * 2022-06-13 2022-07-12 迈创(常州)智能科技有限公司 Hot melt rubber pipe convenient to connect

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JP2021011908A (en) * 2019-07-05 2021-02-04 株式会社キッツ Cap and valve, and fixture
JP7385384B2 (en) 2019-07-05 2023-11-22 株式会社キッツ Caps, valves and fixtures
CN114738570A (en) * 2022-06-13 2022-07-12 迈创(常州)智能科技有限公司 Hot melt rubber pipe convenient to connect

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