JP7791040B2 - Fluid pipe coupling device and coupling - Google Patents
Fluid pipe coupling device and couplingInfo
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- JP7791040B2 JP7791040B2 JP2022077522A JP2022077522A JP7791040B2 JP 7791040 B2 JP7791040 B2 JP 7791040B2 JP 2022077522 A JP2022077522 A JP 2022077522A JP 2022077522 A JP2022077522 A JP 2022077522A JP 7791040 B2 JP7791040 B2 JP 7791040B2
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Description
この発明は、流体管継手装置、および継手における、部材間の結合に関するものである。 This invention relates to fluid pipe coupling devices and the connections between components in couplings.
従来、空調機の排水口と排水管との間の排水経路の終端部分に、管継ぎ手が用いられていた（例えば、特許文献１参照）。図１０に示すように、この管継ぎ手３３は、管体３１と排水管３２とを繋ぐものであって、管体３１側の第１連結体３４と、排水管３２側の第２連結体３５とで構成された。ここで、第１連結体３４と第２連結体３５との連結にあたっては、第１連結体３４に空転可能に装着された連結ナット３４ａが、第２連結体３５に形成された雄ネジ部３５ａに螺合することで、両連結体３４、３５が互いに連結された。 Conventionally, a pipe joint has been used at the end of the drainage path between the air conditioner's drain outlet and the drain pipe (see, for example, Patent Document 1). As shown in Figure 10, this pipe joint 33 connects the pipe body 31 and the drain pipe 32, and is composed of a first connector 34 on the pipe body 31 side and a second connector 35 on the drain pipe 32 side. Here, when connecting the first connector 34 and the second connector 35, a connecting nut 34a attached to the first connector 34 so as to be able to rotate freely is threaded onto a male thread portion 35a formed on the second connector 35, thereby connecting the two connectors 34, 35 to each other.
しかし、前記従来の管継ぎ手３３にあっては、連結ナット３４ａの締め込みが足りなかったり、排水が流れることによる振動や、排水モーターの振動により、連結ナット３４ａに緩みが生じたりして、漏水が発生する虞があった。 However, with the conventional pipe fitting 33, there was a risk of water leakage if the connecting nut 34a was not tightened enough, or if the connecting nut 34a became loose due to vibrations caused by the drainage water flowing or the drainage motor.
この発明は、上記した従来の欠点を解決するためになされたものであり、その目的とするところは、連結ナットの必要量の締め込みを確認することができ、かつ、必要量の締め込みを維持して連結ナットの緩みを防止することができる、流体管継手装置、および継手を提供することにある。 This invention was made to solve the above-mentioned drawbacks of the conventional technology, and its purpose is to provide a fluid pipe coupling device and coupling that can confirm the required amount of tightening of the connecting nut and maintain the required amount of tightening to prevent the connecting nut from loosening.
この発明に係る流体管継手装置、および継手は、前記目的を達成するために、次の構成からなる。すなわち、
本発明に係る流体管継手装置は、流体管継手と、緩み止め具とを備える。前記流体管継手は、互いに結合される第１継手部材と第２継手部材とを備える。前記第１継手部材は、第１の流体管が接続される第１接続部と、第１軸部を有する第１結合部とを備えて、内部に流体の流通路が設けられる。そして、前記第１結合部は、前記第１軸部の外周に、空回り可能、かつ、その第１軸部の先端側からの抜け出しが不能に嵌められた連結ナットを有する。また、前記第２継手部材は、第２の流体管が接続される第２接続部と、第２軸部を有する第２結合部とを備えて、内部に流体の流通路が設けられる。そして、前記第２軸部の外周には、前記連結ナットと螺合する雄ネジ部が形成されて、それら連結ナットと雄ネジ部との螺合により、前記第１結合部と前記第２結合部とが互いに結合されるとともに、前記第１および第２継手部材の流通路を介して、前記第１の流体管の流通路と前記第２の流体管の流通路とが互いに連通する。一方、前記緩み止め具は、前記連結ナットの、前記第１軸部の先端とは反対側である後方側の端面に当接する、ナット当接部を備え、そのナット当接部を、前記雄ネジ部に螺合する前記連結ナットに向けた状態で、前記連結ナットの軸心方向と交差する方向から前記流体管継手に取り付け可能であるとともに、取り付けられた状態で、前記雄ネジ部に対する前記連結ナットの、後退方向への移動を規制する。そして、前記緩み止め具は、前記連結ナットが規定の螺合位置まで前記雄ネジ部に螺合した場合のみ、前記流体管継手に取り付け可能である。
In order to achieve the above object, the fluid pipe coupling device and coupling according to the present invention have the following configuration:
The fluid pipe coupling device according to the present invention comprises a fluid pipe coupling and a locking device. The fluid pipe coupling comprises a first coupling member and a second coupling member coupled to each other. The first coupling member comprises a first connection portion to which a first fluid pipe is connected and a first coupling portion having a first shaft portion, and has a fluid flow passage formed therein. The first coupling portion has a connecting nut fitted around the outer periphery of the first shaft portion so as to be rotatable and unable to slip out from the tip side of the first shaft portion. The second coupling member comprises a second connection portion to which a second fluid pipe is connected and a second coupling portion having a second shaft portion, and has a fluid flow passage formed therein. The second shank has an outer periphery formed with a male thread that threadably engages with the connecting nut, and the first coupling portion and the second coupling portion are coupled together by the threaded engagement of the connecting nut with the male thread, and the flow passage of the first fluid pipe and the flow passage of the second fluid pipe are connected to each other via the flow passages of the first and second coupling members. The locking device has a nut abutment that abuts against the rear end face of the connecting nut, opposite the tip of the first shank. The locking device can be attached to the fluid pipe coupling in a direction intersecting the axial direction of the connecting nut with the nut abutment facing the connecting nut that threads onto the male thread. In the attached state, the locking device restricts backward movement of the connecting nut relative to the male thread. The locking device can be attached to the fluid pipe coupling only when the connecting nut is threaded onto the male thread to a specified engagement position.
この流体管継手装置によると、流体管継手は、第１継手部材と第２継手部材を備える。そして、第１継手部材は、第１結合部を備え、第２継手部材は、第２結合部を備えている。そこで、第１結合部の連結ナットと、第２結合部の雄ネジ部とが螺合することで、第１結合部と第２結合部、ひいては、第１継手部材と第２継手部材とは、互いに結合される。そして、緩み止め具は、連結ナットが規定の螺合位置まで雄ネジ部に螺合した場合のみ、流体管継手に取り付け可能であり、緩み止め具が流体管継手に取り付けられると、緩み止め具のナット当接部が、連結ナットの、第１軸部の先端とは反対側である後方側の端面に当接し、雄ネジ部に対する連結ナットの、後退方向への移動を規制する。 According to this fluid pipe coupling device, the fluid pipe coupling comprises a first coupling member and a second coupling member. The first coupling member comprises a first coupling portion, and the second coupling member comprises a second coupling portion. The connecting nut of the first coupling portion threads onto the male thread portion of the second coupling portion, thereby connecting the first coupling portion and the second coupling portion, and therefore the first coupling member and the second coupling member, to each other. The locking device can be attached to the fluid pipe coupling only when the connecting nut is threaded onto the male thread portion to a specified engagement position. When the locking device is attached to the fluid pipe coupling, the nut abutment portion of the locking device abuts against the rear end face of the connecting nut, opposite the tip of the first shank, thereby restricting backward movement of the connecting nut relative to the male thread portion.
また、本発明の流体管継手装置において、前記第２継手部材は、前記雄ネジ部の基端側に、被係止部を備える。そして、前記緩み止め具は、前記流体管継手に取り付けられた際に前記被係止部に係止する係止部を備え、その係止部と前記ナット当接部とで、前記雄ネジ部に対する前記連結ナットの、後退方向への移動を規制する構成が提案される。 In the fluid pipe coupling device of the present invention , the second coupling member has an interlocking portion on the base end side of the male thread portion, and the locking device has an interlocking portion that interlocks with the interlocking portion when attached to the fluid pipe coupling, and the interlocking portion and the nut abutment portion together restrict backward movement of the connecting nut relative to the male thread portion.
また、上記構成において、前記緩み止め具は、環状の一部が欠落しその欠落箇所が前記連結ナットおよび前記被係止部を受け入れる開口となる、略Ｃ字状を成し、前記ナット当接部と前記係止部とが両端に位置して、それらナット当接部と係止部との間が、前記連結ナットおよび前記被係止部が収容される収容溝部となり、前記緩み止め具は、前記連結ナットおよび前記被係止部を収容した取り付け状態で、前記連結ナットの外周回りに空回り可能である。これにより、緩み止め具を取り付けた後に、その緩み止め具を回すことで、開口の向きを変えることができる構成が提案される。 In the above configuration , the locking device is generally C-shaped with a portion of the annulus missing, the missing portion forming an opening for receiving the connecting nut and the locked portion, the nut abutment portion and the locking portion being located at both ends, the space between the nut abutment portion and the locking portion forming an accommodation groove for accommodating the connecting nut and the locked portion, and the locking device can freely rotate around the outer periphery of the connecting nut when it is attached with the connecting nut and the locked portion accommodated in it.This proposes a configuration in which the orientation of the opening can be changed by rotating the locking device after it is attached.
また、本発明流体管継手装置において、前記緩み止め具を前記流体管継手に取り付けた状態で、前記緩み止め具とともに前記流体管継手の少なくとも一部を覆う断熱材を備える構成が提案される。 Furthermore, a proposed configuration is provided for the fluid pipe coupling device of the present invention , in which a heat insulating material is provided that covers at least a portion of the fluid pipe coupling together with the locking device when the locking device is attached to the fluid pipe coupling.
また、本発明流体管継手装置において、前記緩み止め具は、前記流体管継手とは異なる色彩が施されている構成が提案される。 In the fluid pipe coupling device of the present invention , it is also proposed that the locking device be colored differently from the fluid pipe coupling.
また、本発明に係る継手は、継手部材と、緩み止め具とを備える。前記継手部材は、流体管が接続される接続部と、軸部を有する結合部とを備えて、内部に流体の流通路が設けられる。そして、前記結合部は、前記軸部の外周に、空回り可能、かつ、その軸部の先端側からの抜け出しが不能に嵌められた連結ナットを有する。この連結ナットは、内部に流体の流通路が設けられた他の結合部が有する他の軸部の外周に形成された雄ネジ部に螺合可能である。一方、前記緩み止め具は、前記連結ナットの、前記軸部の先端とは反対側である後方側の端面に当接する、ナット当接部を備え、そのナット当接部を、前記雄ネジ部に螺合する前記連結ナットに向けた状態で、前記連結ナットの軸心方向と交差する方向から前記継手部材および前記他の結合部に取り付け可能であるとともに、取り付けられた状態で、前記雄ネジ部に対する前記連結ナットの、後退方向への移動を規制する。そして、前記緩み止め具は、前記連結ナットが規定の螺合位置まで前記雄ネジ部に螺合した場合のみ、前記継手部材および前記他の結合部に取り付け可能である。 The present invention also provides a coupling comprising a coupling member and a locking device. The coupling member includes a connection portion to which a fluid pipe is connected and a coupling portion having a shaft portion and a fluid flow passage therein. The coupling portion has a connecting nut fitted to the outer periphery of the shaft portion so as to be free to rotate and unable to slip out from the tip end of the shaft portion. The connecting nut is threadably engageable with a male thread portion formed on the outer periphery of a shaft portion of another coupling portion having a fluid flow passage therein. The locking device includes a nut abutting portion that abuts against the rear end face of the connecting nut, opposite the tip end of the shank. The locking device is attachable to the coupling member and the other coupling portion from a direction intersecting the axial direction of the connecting nut with the nut abutting portion facing the connecting nut threaded onto the male thread portion, and when attached, restricts movement of the connecting nut in a backward direction relative to the male thread portion. The locking device can be attached to the joint member and the other coupled portion only when the connecting nut is screwed onto the male threaded portion up to a specified screwing position.
この継手によると、継手部材は、結合部を備える。そこで、結合部の連結ナットと、他の結合部の雄ネジ部とが螺合することで、結合部と他の結合部、ひいては、継手部材と他の結合部とは、互いに結合される。そして、緩み止め具は、連結ナットが規定の螺合位置まで雄ネジ部に螺合した場合のみ、継手部材および他の結合部に取り付け可能であり、緩み止め具が継手部材および他の結合部に取り付けられると、緩み止め具のナット当接部が、連結ナットの、軸部の先端とは反対側である後方側の端面に当接し、雄ネジ部に対する連結ナットの、後退方向への移動を規制する。 In this coupling, the coupling member includes a connecting portion. The connecting nut of the connecting portion threads onto the male threaded portion of the other connecting portion, thereby connecting the connecting portion and the other connecting portion, and ultimately the coupling member and the other connecting portion. The locking device can be attached to the coupling member and the other connecting portion only when the connecting nut is threaded onto the male threaded portion up to the specified engagement position. When the locking device is attached to the coupling member and the other connecting portion, the nut abutment portion of the locking device abuts against the rear end face of the connecting nut, opposite the tip of the shank, restricting backward movement of the connecting nut relative to the male threaded portion.
この発明に係る流体管継手装置、および継手によれば、緩み止め具が取り付けられることで、連結ナットの必要量の締め込みを確認することができ、かつ、その緩み止め具によって、必要量の締め込みを維持して連結ナットの緩みを防止することができる。 The fluid pipe coupling device and coupling of this invention are equipped with a locking device, which allows you to confirm whether the connecting nut has been tightened to the required amount, and the locking device maintains the required amount of tightening to prevent the connecting nut from loosening.
以下、この発明を実施するための形態を図面に基づいて説明する。 The following describes an embodiment of the present invention with reference to the drawings.
図１～図９は、本発明の一実施の形態を示す。図中符号１は、第１の流体管を示す。２は、第２の流体管を示す。３は、流体管継手装置を示す。４は、継手を示す。ここで、流体管継手装置３とか、継手４は、流体の流通路を形成するものであって、例えば、エアコンのドレンアップ箇所に用いられるが、その用途は、これに限定されるものではない。 Figures 1 to 9 show one embodiment of the present invention. In the figures, reference numeral 1 denotes a first fluid pipe. 2 denotes a second fluid pipe. 3 denotes a fluid pipe coupling device. 4 denotes a coupling. Here, the fluid pipe coupling device 3 and coupling 4 form a fluid flow path and are used, for example, in the drain up location of an air conditioner, but their uses are not limited to this.
流体管継手装置３は、流体管継手３ａと、緩み止め具２０とを備える。流体管継手３ａは、互いに結合される第１継手部材５と第２継手部材１０とを備える。第１継手部材５は、第１の流体管１が接続される第１接続部６と、第１軸部８を有する第１結合部７とを備えて、内部に流体の流通路が設けられる。そして、第１結合部７は、第１軸部８の外周に、空回り可能、かつ、その第１軸部８の先端側からの抜け出しが不能に嵌められた連結ナット９を有する。 The fluid pipe coupling device 3 comprises a fluid pipe coupling 3a and a locking device 20. The fluid pipe coupling 3a comprises a first coupling member 5 and a second coupling member 10 that are coupled to each other. The first coupling member 5 comprises a first connection portion 6 to which the first fluid pipe 1 is connected, and a first coupling portion 7 having a first shaft portion 8, and has a fluid flow passage provided therein. The first coupling portion 7 has a connecting nut 9 that is fitted around the outer periphery of the first shaft portion 8 so that it can rotate freely but cannot slip out from the tip side of the first shaft portion 8.
第２継手部材１０は、第２の流体管２が接続される第２接続部１１と、第２軸部１３を有する第２結合部１２とを備えて、内部に流体の流通路が設けられる。そして、第２軸部１３の外周には、連結ナット９と螺合する雄ネジ部１３ａが形成されている。そこで、それら連結ナット９と雄ネジ部１３ａとの螺合により、第１結合部７と第２結合部１２とが互いに結合されるとともに、第１および第２継手部材５、１０の流通路を介して、第１の流体管１の流通路と第２の流体管２の流通路とが互いに連通する。 The second coupling member 10 includes a second connection portion 11 to which the second fluid pipe 2 is connected, and a second coupling portion 12 having a second shaft portion 13, and has a fluid flow passage provided therein. The outer periphery of the second shaft portion 13 is formed with a male thread portion 13a that threadably engages with the connecting nut 9. By threading the connecting nut 9 with the male thread portion 13a, the first coupling portion 7 and the second coupling portion 12 are coupled to each other, and the flow passages of the first fluid pipe 1 and the second fluid pipe 2 are connected to each other via the flow passages of the first and second coupling members 5, 10.
流体管継手装置３において、緩み止め具２０は、連結ナット９の、第１軸部８の先端とは反対側である後方側の端面９ａに当接する、ナット当接部２０ａを備え、そのナット当接部２０ａを、雄ネジ部１３ａに螺合する連結ナット９に向けた状態で、連結ナット９の軸心方向と交差する方向２１（図示実施の形態においては、直交方向）から流体管継手３ａ（詳しくは、第１結合部７および第２結合部１２）に取り付け可能であるとともに、取り付けられた状態で、雄ネジ部１３ａに対する連結ナット９の、後退方向２２への移動を規制する。そして、緩み止め具２０は、連結ナット９が規定の螺合位置まで雄ネジ部１３ａに螺合した場合のみ、流体管継手３ａ（詳しくは、第１結合部７および第２結合部１２）に取り付け可能である。 In the fluid pipe coupling device 3, the anti-loosening device 20 has a nut abutment portion 20a that abuts against the rear end face 9a of the connecting nut 9, opposite the tip of the first shaft portion 8. With the nut abutment portion 20a facing the connecting nut 9 threaded onto the male thread portion 13a, the anti-loosening device 20 can be attached to the fluid pipe coupling 3a (specifically, the first coupling portion 7 and the second coupling portion 12) in a direction 21 intersecting the axial direction of the connecting nut 9 (in the illustrated embodiment, a perpendicular direction). Once attached, the anti-loosening device 20 restricts movement of the connecting nut 9 in the backward direction 22 relative to the male thread portion 13a. The anti-loosening device 20 can be attached to the fluid pipe coupling 3a (specifically, the first coupling portion 7 and the second coupling portion 12) only when the connecting nut 9 has been threaded onto the male thread portion 13a to the specified engagement position.
詳細には、第２継手部材１０（詳しくは、第２結合部１２）は、雄ネジ部１３ａの基端側に、被係止部１２ａを備える。一方、緩み止め具２０は、流体管継手３ａに取り付けられた際に被係止部１２ａに係止する係止部２０ｂを備え、その係止部２０ｂとナット当接部２０ａとで、雄ネジ部１３ａに対する連結ナット９の、後退方向２２への移動を規制する。 More specifically, the second coupling member 10 (more specifically, the second connecting portion 12) has an interlocking portion 12a on the base end side of the male thread portion 13a. Meanwhile, the locking device 20 has an interlocking portion 20b that interlocks with the interlocking portion 12a when attached to the fluid pipe coupling 3a, and the interlocking portion 20b and the nut abutment portion 20a restrict movement of the connecting nut 9 relative to the male thread portion 13a in the retraction direction 22.
継手４は、継手部材５ｘ（前述の第１継手部材５）と、緩み止め具２０とを備える。継手部材５ｘは、流体管１ｘ（前述の第１の流体管１）が接続される接続部６ｘ（前述の第１接続部６）と、軸部８ｘ（前述の第１軸部８）を有する結合部７ｘ（前述の第１結合部７）とを備えて、内部に流体の流通路が設けられる。そして、結合部７ｘは、軸部８ｘの外周に、空回り可能、かつ、その軸部８ｘの先端側からの抜け出しが不能に嵌められた連結ナット９を有する。この連結ナット９は、内部に流体の流通路が設けられた他の結合部１２ｘ（前述の第２結合部１２）が有する他の軸部１３ｘ（前述の第２軸部１３）の外周に形成された雄ネジ部１３ａに螺合可能である。 The coupling 4 comprises a coupling member 5x (the aforementioned first coupling member 5) and a locking device 20. The coupling member 5x comprises a connection portion 6x (the aforementioned first connection portion 6) to which a fluid pipe 1x (the aforementioned first fluid pipe 1) is connected, and a coupling portion 7x (the aforementioned first coupling portion 7) having a shaft portion 8x (the aforementioned first shaft portion 8), with a fluid flow passage provided therein. The coupling portion 7x has a connecting nut 9 fitted to the outer periphery of the shaft portion 8x so as to be freely rotatable and unable to slip out from the tip end of the shaft portion 8x. This connecting nut 9 can be threaded onto a male thread portion 13a formed on the outer periphery of another shaft portion 13x (the aforementioned second shaft portion 13) of another coupling portion 12x (the aforementioned second coupling portion 12), with a fluid flow passage provided therein.
継手４において、緩み止め具２０は、連結ナット９の、軸部８ｘの先端とは反対側である後方側の端面９ａに当接する、ナット当接部２０ａを備え、そのナット当接部２０ａを、雄ネジ部１３ａに螺合する連結ナット９に向けた状態で、連結ナット９の軸心方向と交差する方向２１（図示実施の形態においては、直交方向）から継手部材５ｘ（詳しくは、結合部７ｘ）および他の結合部１２ｘに取り付け可能であるとともに、取り付けられた状態で、雄ネジ部１３ａに対する連結ナット９の、後退方向２２への移動を規制する。そして、緩み止め具２０は、連結ナット９が規定の螺合位置まで雄ネジ部１３ａに螺合した場合のみ、継手部材５ｘ（詳しくは、結合部７ｘ）および他の結合部１２ｘに取り付け可能である。 In the joint 4, the locking device 20 has a nut abutment portion 20a that abuts against the rear end face 9a of the connecting nut 9, opposite the tip of the shank 8x. With the nut abutment portion 20a facing the connecting nut 9 threaded onto the male thread portion 13a, the locking device 20 can be attached to the joint member 5x (specifically, the connecting portion 7x) and other connecting portions 12x in a direction 21 intersecting the axial direction of the connecting nut 9 (in the illustrated embodiment, a perpendicular direction). When attached, the locking device restricts movement of the connecting nut 9 in the backward direction 22 relative to the male thread portion 13a. The locking device 20 can be attached to the joint member 5x (specifically, the connecting portion 7x) and other connecting portions 12x only when the connecting nut 9 has been threaded onto the male thread portion 13a to the specified engagement position.
具体的には、第１継手部材５と第２継手部材１０とは、ともに軸心が屈曲して形成されて、それら第１継手部材５と第２継手部材１０とを、それらの結合側の軸心を軸に相対的に回動した回動位置で連結することで、第１接続部６の軸心と第２接続部１１の軸心が平行となる平行姿勢（図２～図４参照）と、それら軸心が直交する直交姿勢（図示せず）とが形成される。 Specifically, the first coupling part 5 and the second coupling part 10 are both formed with bent axes, and by connecting the first coupling part 5 and the second coupling part 10 in positions rotated relative to each other around the axis of their coupling sides, a parallel position (see Figures 2 to 4) in which the axis of the first connecting part 6 and the axis of the second connecting part 11 are parallel, and an orthogonal position (not shown) in which the axes are perpendicular, are formed.
第１継手部材５は、その第１接続部６が、同心状に並ぶ、内側筒部６ａと中間筒部６ｂと外側筒部６ｃとで構成される。そこで、第１の流体管１は、管本体１ａと、その管本体１ａを覆う覆い材１ｂとからなって、管本体１ａが、内側筒部６ａと中間筒部６ｂとの間に差し入れられ、覆い材１ｂが、中間筒部６ｂと外側筒部６ｃとの間に差し入れられて、例えば接着等により、この第１接続部６に固定される。第１結合部７においては、第１軸部８の外周には、その外周から突出するようにして抜け出し防止部８ａが設けられている。一方、連結ナット９は、第１軸部８の先端とは反対側である後方側の端から内側に突き出た突出部９ｂを備えた袋ナットであって、この突出部９ｂが、抜け出し防止部８ａよりも奥にあって、その抜け出し防止部８ａに当たることで、連結ナット９は、第１軸部８の先端側からの抜け出しが不能となる。 The first coupling member 5 has a first connection portion 6 composed of a concentric inner tubular portion 6a, an intermediate tubular portion 6b, and an outer tubular portion 6c. The first fluid pipe 1 comprises a pipe body 1a and a covering member 1b covering the pipe body 1a. The pipe body 1a is inserted between the inner tubular portion 6a and the intermediate tubular portion 6b, and the covering member 1b is inserted between the intermediate tubular portion 6b and the outer tubular portion 6c, and is fixed to the first connection portion 6 by, for example, adhesive. In the first coupling portion 7, a slip-out prevention portion 8a is provided on the outer periphery of the first shank 8 so as to protrude from the outer periphery. Meanwhile, the connecting nut 9 is a cap nut equipped with a protrusion 9b protruding inward from the rear end of the first shank 8, opposite the tip. This protrusion 9b is located further back than the slip-out prevention portion 8a and abuts against the slip-out prevention portion 8a, preventing the connecting nut 9 from slipping out of the tip of the first shank 8.
第２継手部材１０は、その第２接続部１１が、第２の流体管２の異なる径に対応するように、大径部１１ａと小径部１１ｂとを有している。図示実施の形態においては、第２の流体管２の径は大径であって、その第２の流体管２が、大径部１１ａに挿入されて、例えば接着等により、この大径部１１ａ（第２接続部１１）に固定される。第２結合部１２においては、前述の被係止部１２ａが、第２軸部１３の外周から突出するようにして設けられる。そして、この第２軸部１３に、前記第１軸部８が挿入される。図中符号１４は、リング状の止水部材であり、この止水部材１４は、第１軸部８の外周に嵌められて、第２軸部１３の内周面に密接する。 The second coupling member 10 has a second connecting portion 11 having a large diameter portion 11a and a small diameter portion 11b to accommodate different diameters of the second fluid pipe 2. In the illustrated embodiment, the second fluid pipe 2 has a large diameter, and is inserted into the large diameter portion 11a and fixed to this large diameter portion 11a (second connecting portion 11) by, for example, adhesive. In the second coupling portion 12, the aforementioned engaging portion 12a is provided so as to protrude from the outer periphery of the second shank 13. The first shank 8 is then inserted into this second shank 13. In the figure, the symbol 14 denotes a ring-shaped waterproofing member. This waterproofing member 14 is fitted onto the outer periphery of the first shank 8 and is in close contact with the inner circumferential surface of the second shank 13.
緩み止め具２０は、環状の一部が欠落しその欠落箇所が前記連結ナット９および前記被係止部１２ａを受け入れる開口２０ｃとなる、略Ｃ字形状を成す。そして、緩み止め具２０は、前述のナット当接部２０ａと係止部２０ｂとが両端（つまり、連結ナット９の軸心方向における両端）に位置して、それらナット当接部２０ａと係止部２０ｂとの間が、連結ナット９および被係止部１２ａが収容される収容溝部２０ｄとなり、ナット当接部２０ａと係止部２０ｂとで、連結ナット９および被係止部１２ａを挟むこととなる。そこで、連結ナット９の雄ネジ部１３ａへの螺合が、規定の螺合位置に達しない場合には、緩み止め具２０が、連結ナット９と被係止部１２ａとの両方を収容することができず、緩み止め具２０を流体管継手３ａ（詳しくは、第１結合部７および第２結合部１２）に取り付けることができない。このため、緩み止め具２０は、連結ナット９が規定の螺合位置まで雄ネジ部１３ａに螺合した場合のみ、流体管継手３ａ（詳しくは、第１結合部７および第２結合部１２）に取り付け可能となる。 The locking device 20 is roughly C-shaped, with a portion of the annulus missing, which serves as an opening 20c for receiving the connecting nut 9 and the locked portion 12a. The locking device 20 has the nut abutment portion 20a and locking portion 20b located at both ends (i.e., both ends in the axial direction of the connecting nut 9), and the space between the nut abutment portion 20a and locking portion 20b forms the accommodation groove 20d for accommodating the connecting nut 9 and locked portion 12a, sandwiching the connecting nut 9 and locked portion 12a between the nut abutment portion 20a and locking portion 20b. Therefore, if the connecting nut 9 is not threaded onto the male thread portion 13a to the specified threaded position, the locking device 20 will not be able to accommodate both the connecting nut 9 and the locked portion 12a, and the locking device 20 will not be able to be attached to the fluid pipe fitting 3a (more specifically, the first coupling portion 7 and the second coupling portion 12). For this reason, the locking device 20 can only be attached to the fluid pipe fitting 3a (more specifically, the first coupling portion 7 and the second coupling portion 12) if the connecting nut 9 is threaded onto the male thread portion 13a to the specified threaded position.
詳細には、緩み止め具２０は、環状の一部が欠落した帯状の緩み止め具本体２０ｅと、その緩み止め具本体２０ｅの幅方向の各端から内側に向かって突出する、前述のナット当接部２０ａおよび係止部２０ｂを備える。そして、緩み止め具２０は、連結ナット９および被係止部１２ａを収容した取り付け状態で、連結ナット９の外周回りに空回り可能となっている。また、緩み止め具２０（詳しくは、緩み止め具本体２０ｅ）の外周面には、開口２０ｃ近くに、指掛け凸部２０ｆが設けられている。 More specifically, the locking device 20 comprises a band-shaped locking device body 20e with a portion of the annular shape missing, and the aforementioned nut abutment portion 20a and locking portion 20b that protrude inward from each end of the width of the locking device body 20e. When the locking device 20 is installed, containing the connecting nut 9 and the locked portion 12a, it can freely rotate around the outer periphery of the connecting nut 9. Furthermore, a finger hook protrusion 20f is provided on the outer periphery of the locking device 20 (more specifically, the locking device body 20e) near the opening 20c.
次に、以上の構成からなる流体管継手装置３および継手４の作用効果について説明する。流体管継手装置３によると、流体管継手３ａは、第１継手部材５と第２継手部材１０を備える。そして、第１継手部材５は、第１結合部７を備え、第２継手部材１０は、第２結合部１２を備えている。そこで、第１結合部７の連結ナット９と、第２結合部１２の雄ネジ部１３ａとが螺合することで、第１結合部７と第２結合部１２、ひいては、第１継手部材５と第２継手部材１０とは、互いに結合される。そして、緩み止め具２０は、連結ナット９が規定の螺合位置まで雄ネジ部１３ａに螺合した場合のみ、流体管継手３ａ（詳しくは、第１結合部７および第２結合部１２）に取り付け可能であり、緩み止め具２０が流体管継手３ａに取り付けられると、緩み止め具２０のナット当接部２０ａが、連結ナット９の、第１軸部８の先端とは反対側である後方側の端面９ａに当接し、雄ネジ部１３ａに対する連結ナット９の、後退方向２２への移動を規制する。 Next, the effects of the fluid pipe coupling device 3 and coupling 4 configured as described above will be explained. According to the fluid pipe coupling device 3, the fluid pipe coupling 3a includes a first coupling member 5 and a second coupling member 10. The first coupling member 5 includes a first coupling portion 7, and the second coupling member 10 includes a second coupling portion 12. The connecting nut 9 of the first coupling portion 7 threads into the male thread portion 13a of the second coupling portion 12, thereby coupling the first coupling portion 7 and the second coupling portion 12, and therefore the first coupling member 5 and the second coupling member 10, to each other. The locking device 20 can be attached to the fluid pipe coupling 3a (more specifically, the first coupling portion 7 and the second coupling portion 12) only when the connecting nut 9 has been threaded onto the male thread portion 13a to the specified engagement position. When the locking device 20 is attached to the fluid pipe coupling 3a, the nut abutment portion 20a of the locking device 20 abuts against the rear end face 9a of the connecting nut 9, which is opposite the tip of the first shaft portion 8, and restricts movement of the connecting nut 9 in the backward direction 22 relative to the male thread portion 13a.
また、継手４によると、継手部材５ｘ（第１継手部材５）は、結合部７ｘ（第１結合部７）を備える。そこで、結合部７ｘの連結ナット９と、他の結合部１２ｘ（第２結合部１２）の雄ネジ部１３ａとが螺合することで、結合部７ｘと他の結合部１２ｘ、ひいては、継手部材５ｘと他の結合部１２ｘとは、互いに結合される。そして、緩み止め具２０は、連結ナット９が規定の螺合位置まで雄ネジ部１３ａに螺合した場合のみ、継手部材５ｘ（詳しくは、結合部７ｘ）および他の結合部１２ｘに取り付け可能であり、緩み止め具２０が継手部材５ｘおよび他の結合部１２ｘに取り付けられると、緩み止め具２０のナット当接部２０ａが、連結ナット９の、軸部８ｘ（第１軸部８）の先端とは反対側である後方側の端面９ａに当接し、雄ネジ部１３ａに対する連結ナット９の、後退方向２２への移動を規制する。 Furthermore, according to the joint 4, the joint member 5x (first joint member 5) has a connecting portion 7x (first connecting portion 7). The connecting nut 9 of the connecting portion 7x is threadedly engaged with the male thread portion 13a of the other connecting portion 12x (second connecting portion 12), thereby connecting the connecting portion 7x and the other connecting portion 12x, and ultimately the joint member 5x and the other connecting portion 12x, to each other. The locking device 20 can be attached to the coupling member 5x (more specifically, the connecting portion 7x) and other connecting portions 12x only when the connecting nut 9 has been threaded onto the male thread portion 13a to the specified engagement position. When the locking device 20 is attached to the coupling member 5x and other connecting portions 12x, the nut abutment portion 20a of the locking device 20 abuts against the rear end face 9a of the connecting nut 9, which is opposite the tip of the shank portion 8x (first shank portion 8), restricting movement of the connecting nut 9 in the backward direction 22 relative to the male thread portion 13a.
すなわち、これら流体管継手装置３とか継手４によると、緩み止め具２０が取り付けられることで、連結ナット９の必要量の締め込みを確認することができ、かつ、その緩み止め具２０によって、必要量の締め込みを維持して連結ナット９の緩みを防止することができる。つまり、緩み止め具２０は、連結ナット９の緩み止めとなるだけでなく、連結ナット９の必要量の締め込みを確認する確認具ともなっている。 In other words, with these fluid pipe coupling devices 3 and couplings 4, the attachment of the locking device 20 makes it possible to confirm whether the connecting nut 9 has been tightened to the required amount, and the locking device 20 maintains the required amount of tightening, preventing the connecting nut 9 from loosening. In other words, the locking device 20 not only prevents the connecting nut 9 from loosening, but also serves as a checking device for confirming whether the connecting nut 9 has been tightened to the required amount.
また、緩み止め具２０は、流体管継手３ａ（詳しくは、第１結合部７（結合部７ｘ）および第２結合部１２（他の結合部１２ｘ））への取り付け状態で、前記連結ナット９の外周回りに空回り可能である。これにより、緩み止め具２０を取り付けた後に、その緩み止め具２０を回すことで、開口２０ｃの向きを変えることができる。つまり、緩み止め具２０を、その開口２０ｃを連結ナット９に向けて取り付けた後に、緩み止め具２０を回して、開口２０ｃを手前に向けることができる。 Furthermore, when the locking device 20 is attached to the fluid pipe fitting 3a (more specifically, the first coupling portion 7 (coupling portion 7x) and the second coupling portion 12 (other coupling portion 12x)), it can freely rotate around the outer periphery of the connecting nut 9. This allows the orientation of the opening 20c to be changed by rotating the locking device 20 after it has been attached. In other words, after the locking device 20 is attached with its opening 20c facing the connecting nut 9, it can be rotated to orient the opening 20c toward the user.
また、緩み止め具２０は、流体管継手３ａとは異なる色彩が施されるのがよく、こうすることで、離れた場所からでも、視覚によって、緩み止め具２０が取り付けられていることを把握することができる。 It is also preferable that the anti-loosening device 20 be colored a different color from the fluid pipe fitting 3a, so that it is possible to visually recognize that the anti-loosening device 20 has been installed even from a distance.
また、流体管継手装置３は、緩み止め具２０を流体管継手３ａに取り付けた状態で、緩み止め具２０とともに流体管継手３ａの少なくとも一部を覆う断熱材（図示せず）を備えてもよい。こうすることで、緩み止め具２０を用いて、連結ナット９と雄ネジ部１３ａとの螺合量が適切であることを確認した後に、断熱材で覆う際に、その緩み止め具２０を、緩み止めとして取り付けたままにしておくことができる。すなわち、適切な螺合量（つまり、連結ナット９の必要量の締め込み）を確認する確認具と、断熱材で覆い可能な緩み止め具とを別に用意し、取り付ける必要がない。 The fluid pipe coupling device 3 may also include a heat insulating material (not shown) that covers at least a portion of the fluid pipe coupling 3a together with the locking device 20 when the locking device 20 is attached to the fluid pipe coupling 3a. In this way, after using the locking device 20 to confirm that the engagement between the connecting nut 9 and the male thread portion 13a is appropriate, the locking device 20 can be left attached as a lock when covering with heat insulating material. In other words, there is no need to separately prepare and attach a checking device that confirms the appropriate engagement (i.e., the required amount of tightening of the connecting nut 9) and a locking device that can be covered with heat insulating material.
ところで、本発明は、流体管継手装置３とか継手４に関する発明であるが、これらに断熱材を加えた設置方法を、以下に記載する。 The present invention relates to the fluid pipe coupling device 3 and coupling 4, and the installation method for adding insulation to these will be described below.
緩み止め具２０が取り付け可能となるまで、連結ナット９を雄ネジ部１３ａに締め込み、その緩み止め具２０が取り付けられている状態を第三者（締め込んだ人とは異なる人）が確認し、その後に、断熱材で、緩み止め具２０とともに、流体管継手３ａとか継手部材５ｘを覆う、流体管継手装置３とか継手４の設置方法。 A method of installing a fluid pipe coupling device 3 or coupling 4 in which the connecting nut 9 is tightened onto the male thread portion 13a until the locking device 20 can be attached, a third party (someone different from the person who tightened it) confirms that the locking device 20 is attached, and then the fluid pipe coupling 3a or coupling member 5x, along with the locking device 20, is covered with insulating material.
なお、本発明は、上述した実施の形態に限定されるわけではなく、その他種々の変更が可能である。例えば、第１継手部材５と第２継手部材１０とは、その軸心が屈曲して形成されているが、その両方あるいはいずれか一方は、軸心が直状に形成されてもよく、その形状は特に問わない。 The present invention is not limited to the above-described embodiment, and various other modifications are possible. For example, the first coupling part 5 and the second coupling part 10 are formed with a curved axis, but either or both of them may have a straight axis, and the shape is not particularly important.
また、継手部材５ｘは、その結合部７ｘが、第２継手部材１０に設けられた他の結合部１２ｘと結合するが、他の結合部１２ｘは、第２継手部材１０に限らず、器具に設けられたものでもよく、これにより、流体管１ｘが、継手部材５ｘ（ひいては、継手４）を介して、器具と繋がることになる。 Furthermore, the coupling portion 7x of the coupling member 5x couples with another coupling portion 12x provided on the second coupling member 10, but the other coupling portion 12x is not limited to being provided on the second coupling member 10 and may be provided on the appliance, thereby connecting the fluid pipe 1x to the appliance via the coupling member 5x (and thus the coupling 4).
１ 第１の流体管
１ｘ 流体管
２ 第２の流体管
３ 流体管継手装置
３ａ 流体管継手
４ 継手
５ 第１継手部材
５ｘ 継手部材
６ 第１接続部
６ｘ 接続部
７ 第１結合部
７ｘ 結合部
８ 第１軸部
８ｘ 軸部
９ 連結ナット
９ａ 端面
１０ 第２継手部材
１１ 第２接続部
１２ 第２結合部
１２ｘ 他の結合部
１２ａ 被係止部
１３ 第２軸部
１３ｘ 他の軸部
１３ａ 雄ネジ部
２０ 緩み止め具
２０ａ ナット当接部
２０ｂ 係止部
２０ｃ 開口
２０ｄ 収容溝部
２１ 交差する方向
２２ 後退方向
REFERENCE SIGNS LIST 1 First fluid pipe 1x Fluid pipe 2 Second fluid pipe 3 Fluid pipe coupling device 3a Fluid pipe coupling 4 Coupling 5 First coupling member 5x Coupling member 6 First connection portion 6x Connection portion 7 First coupling portion 7x Coupling portion 8 First shaft portion 8x Shaft portion 9 Connecting nut 9a End face 10 Second coupling member 11 Second connection portion 12 Second coupling portion 12x Other coupling portion 12a Locked portion 13 Second shaft portion 13x Other shaft portion 13a Male thread portion 20 Anti-loosening device 20a Nut abutment portion 20b Locking portion 20c Opening 20d Accommodation groove portion 21 Intersecting direction 22 Retraction direction
Claims (6)
前記流体管継手は、互いに結合される第１継手部材と第２継手部材とを備え、
前記第１継手部材は、第１の流体管が接続される第１接続部と、第１軸部を有する第１結合部とを備えて、内部に流体の流通路が設けられ、
前記第１結合部は、前記第１軸部の外周に、空回り可能、かつ、その第１軸部の先端側からの抜け出しが不能に嵌められた連結ナットを有し、
前記第２継手部材は、第２の流体管が接続される第２接続部と、第２軸部を有する第２結合部とを備えて、内部に流体の流通路が設けられ、
前記第２軸部の外周には、前記連結ナットと螺合する雄ネジ部が形成されて、それら連結ナットと雄ネジ部との螺合により、前記第１結合部と前記第２結合部とが互いに結合されるとともに、前記第１および第２継手部材の流通路を介して、前記第１の流体管の流通路と前記第２の流体管の流通路とが互いに連通し、
前記緩み止め具は、前記連結ナットの、前記第１軸部の先端とは反対側である後方側の端面に当接する、ナット当接部を備え、そのナット当接部を、前記雄ネジ部に螺合する前記連結ナットに向けた状態で、前記連結ナットの軸心方向と交差する方向から前記流体管継手に取り付け可能であるとともに、取り付けられた状態で、前記雄ネジ部に対する前記連結ナットの、後退方向への移動を規制し、かつ、
前記緩み止め具は、前記連結ナットが規定の螺合位置まで前記雄ネジ部に螺合した場合のみ、前記流体管継手に取り付け可能であり、取り付けられた状態で、前記連結ナットの外周回りに空回り可能である、流体管継手装置。 A fluid pipe coupling device comprising a fluid pipe coupling and a locking device,
The fluid pipe coupling includes a first coupling member and a second coupling member coupled to each other,
the first coupling member includes a first connection portion to which a first fluid pipe is connected and a first coupling portion having a first shaft portion, and a fluid flow passage is provided therein;
the first coupling portion has a connecting nut fitted to the outer periphery of the first shaft portion so as to be rotatable and so as not to be slipped out from the tip end side of the first shaft portion,
the second coupling member includes a second connection portion to which a second fluid pipe is connected and a second coupling portion having a second shaft portion, and a fluid flow passage is provided therein;
a male threaded portion that screws onto the connecting nut is formed on an outer periphery of the second shaft portion, and the first coupling portion and the second coupling portion are coupled to each other by the screwing of the connecting nut and the male threaded portion, and the flow passage of the first fluid pipe and the flow passage of the second fluid pipe are communicated with each other via the flow passages of the first and second coupling members;
The locking device has a nut abutment portion that abuts against the rear end face of the connecting nut, which is opposite to the tip of the first shank, and can be attached to the fluid pipe coupling in a direction intersecting the axial direction of the connecting nut with the nut abutment portion facing the connecting nut that is threaded onto the male thread portion, and when attached, restricts movement of the connecting nut in the backward direction relative to the male thread portion, and
The anti-loosening device can be attached to the fluid pipe coupling only when the connecting nut is threaded onto the male thread portion up to a specified threaded position , and when attached, can freely rotate around the outer periphery of the connecting nut .
前記緩み止め具は、前記流体管継手に取り付けられた際に前記被係止部に係止する係止部を備え、その係止部と前記ナット当接部とで、前記雄ネジ部に対する前記連結ナットの、後退方向への移動を規制する、請求項１に記載の流体管継手装置。 the second joint member includes a locked portion on a base end side of the male thread portion,
2. The fluid pipe coupling device according to claim 1, wherein the anti-loosening device has a locking portion that locks onto the locked portion when attached to the fluid pipe coupling, and the locking portion and the nut abutment portion restrict movement of the connecting nut in a backward direction relative to the male thread portion.
前記緩み止め具は、前記連結ナットおよび前記被係止部を収容した取り付け状態で、前記連結ナットの外周回りに空回り可能である、請求項２に記載の流体管継手装置。 The locking device is generally C-shaped with a portion of the annulus missing, the missing portion forming an opening for receiving the connecting nut and the locked portion, the nut abutment portion and the locking portion being located at both ends, and the space between the nut abutment portion and the locking portion forming an accommodation groove for accommodating the connecting nut and the locked portion, and
3. The fluid pipe coupling device according to claim 2, wherein the locking device is rotatable around the outer periphery of the connecting nut in an attached state in which the connecting nut and the locked portion are housed therein.
前記継手部材は、流体管が接続される接続部と、軸部を有する結合部とを備えて、内部に流体の流通路が設けられ、
前記結合部は、前記軸部の外周に、空回り可能、かつ、その軸部の先端側からの抜け出しが不能に嵌められた連結ナットを有し、
前記連結ナットは、内部に流体の流通路が設けられた他の結合部が有する他の軸部の外周に形成された雄ネジ部に螺合可能であり、
前記緩み止め具は、前記連結ナットの、前記軸部の先端とは反対側である後方側の端面に当接する、ナット当接部を備え、そのナット当接部を、前記雄ネジ部に螺合する前記連結ナットに向けた状態で、前記連結ナットの軸心方向と交差する方向から前記継手部材および前記他の結合部に取り付け可能であるとともに、取り付けられた状態で、前記雄ネジ部に対する前記連結ナットの、後退方向への移動を規制し、かつ、
前記緩み止め具は、前記連結ナットが規定の螺合位置まで前記雄ネジ部に螺合した場合のみ、前記継手部材および前記他の結合部に取り付け可能であり、取り付けられた状態で、前記連結ナットの外周回りに空回り可能である、継手。 A joint comprising a joint member and a locking tool,
The coupling member includes a connection portion to which a fluid pipe is connected and a coupling portion having a shaft portion, and a fluid flow passage is provided therein;
the coupling portion has a connecting nut fitted to the outer periphery of the shaft portion so as to be rotatable and so as not to be able to slip out from the tip end side of the shaft portion,
the connecting nut is capable of being threaded onto a male thread portion formed on the outer periphery of another shaft portion of another coupling portion having a fluid flow passage therein;
The locking device has a nut abutment portion that abuts against the rear end face of the connecting nut, which is opposite to the tip of the shank, and can be attached to the coupling member and the other coupling portion in a direction intersecting the axial direction of the connecting nut with the nut abutment portion facing the connecting nut that is threaded onto the male thread portion, and when attached, it restricts movement of the connecting nut in the backward direction relative to the male thread portion, and
The anti-loosening device can be attached to the coupling member and the other connecting portion only when the connecting nut is threaded onto the male thread portion up to a specified threading position , and when attached, can freely rotate around the outer periphery of the connecting nut .
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| JP2022077522A JP7791040B2 (en) | 2022-05-10 | 2022-05-10 | Fluid pipe coupling device and coupling |
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| US20190024829A1 (en) | 2015-12-18 | 2019-01-24 | Nelco Energy Services Llc | Non-preloaded threaded pipe connection for temporary high pressure piping |
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