JP6730139B2 - Detachment prevention device and pipe joint equipped with this device - Google Patents

Detachment prevention device and pipe joint equipped with this device Download PDF

Info

Publication number
JP6730139B2
JP6730139B2 JP2016172742A JP2016172742A JP6730139B2 JP 6730139 B2 JP6730139 B2 JP 6730139B2 JP 2016172742 A JP2016172742 A JP 2016172742A JP 2016172742 A JP2016172742 A JP 2016172742A JP 6730139 B2 JP6730139 B2 JP 6730139B2
Authority
JP
Japan
Prior art keywords
locking member
folder
locking
receiving
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2016172742A
Other languages
Japanese (ja)
Other versions
JP2018040386A (en
Inventor
芳則 前田
芳則 前田
敏彦 小形
敏彦 小形
温志 佐藤
温志 佐藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cosmo Koki Co Ltd
Original Assignee
Cosmo Koki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cosmo Koki Co Ltd filed Critical Cosmo Koki Co Ltd
Priority to JP2016172742A priority Critical patent/JP6730139B2/en
Publication of JP2018040386A publication Critical patent/JP2018040386A/en
Application granted granted Critical
Publication of JP6730139B2 publication Critical patent/JP6730139B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Joints With Sleeves (AREA)

Description

本発明は、一方の流路構成部材の受口部に他方の流路構成部材の挿口部を挿入し、リング状のシール部材を介して密封状に接続される接続箇所に設けられ、前記流路構成部材同士の離脱を防止する離脱防止装置及びこの装置を備えた管継手に関する。 The present invention, the insertion portion of the other flow path forming member is inserted into the receiving portion of the one flow path forming member, and is provided at a connection point which is hermetically connected via a ring-shaped seal member, BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a separation prevention device that prevents separation of flow path constituent members from each other, and a pipe joint equipped with this device.

従来の流路構成部材同士の離脱を防止する離脱防止装置としては、流路構成部材を構成する挿口部に外嵌された本体部材の内部に、この挿口部に係止するための係止部材を収容し、挿口部の端部に外嵌したリング状のシール部材及びこれを密封状態で保持する保持部材とともに、別の流路構成部材である受口部に向け管軸方向に挿入して密封状に接続するものがある。 As a conventional separation prevention device for preventing separation of flow path constituting members from each other, a member for locking the flow path forming member inside the main body member fitted to the insertion opening is provided. A ring-shaped seal member that accommodates the stopper member and is externally fitted to the end portion of the insertion opening, and a holding member that holds the sealing member in a sealed state, along with the pipe axial direction toward the receiving portion that is another flow path forming member. Some are inserted and connected in a sealed manner.

このような離脱防止装置には、本体部材の内部に収容した係止部材に、受口部内面に向けて管軸方向に延びる押出軸の一端を接続するものがあり、当該装置の本体部材を受口部に管軸方向に接続する際に、この押出軸の他端が受口部の内面に当接して得られる支持力で、本体部材に伴う係止部材の管軸方向の進入を規制することで、係止部材に与える管軸方向の押圧力を遮断し、この状態で更に管軸方向に進行する本体部材の内面のテーパ面を利用して、この係止部材に内径方向の押圧力を与え、係止部材を挿口部に係止するものがある（例えば、特許文献１参照）。 In such a separation prevention device, there is one in which one end of an extrusion shaft extending in the pipe axis direction toward the inner surface of the receiving portion is connected to a locking member housed inside the main body member. When connecting to the receiving part in the tube axial direction, the supporting force obtained by the other end of the pushing shaft abutting the inner surface of the receiving part prevents the locking member from entering the tube axial direction with the main body member. By doing so, the pressing force applied to the locking member in the axial direction of the pipe is blocked, and in this state, the tapered surface of the inner surface of the main body member that further advances in the axial direction of the pipe is used to press the locking member in the radial direction. There is one that applies pressure to lock the locking member to the insertion port (for example, see Patent Document 1).

特開２００５−３０８１８２号公報（第４頁、第６図）JP-A-2005-308182 (page 4, FIG. 6)

しかしながら、特許文献１にあっては、流路構成部材を密封するためのシール部材及びこれを保持する保持部材に、係止部材に接続された押出軸を貫通させるための貫通孔が形成されているため、シール部材による密封性に影響を及ぼすばかりか、軸径の細い押出軸では係止部材の管軸方向の移動を規制する十分な支持力を得られず、係止部材に対し管軸方向の押圧力と内径方向の押圧力を複合して与えてしまう結果、係止部材が挿口部の外周面に係止する食い込みに不具合が生じ、所期の離脱防止機能を十分に発揮できない虞が発生するという問題がある。 However, in Patent Document 1, a through hole for penetrating the extrusion shaft connected to the locking member is formed in the seal member for sealing the flow path forming member and the holding member for holding the seal member. Therefore, not only the sealing performance of the sealing member is affected, but also the extrusion shaft with a small shaft diameter cannot obtain sufficient supporting force to regulate the movement of the locking member in the pipe axis direction, and the locking member does not support the pipe shaft. As a result of the combined application of the pressing force in the direction and the pressing force in the inner diameter, there is a problem in the engagement of the locking member with the outer peripheral surface of the insertion port, and the desired separation prevention function cannot be fully exerted. There is a problem of fear.

本発明は、このような問題点に着目してなされたもので、シール部材の密封性に影響を与えることなく、且つ離脱防止機能を十分に発揮できる離脱防止装置及びこの装置を備えた管継手を提供することを目的とする。 The present invention has been made in view of such a problem, and a separation preventing device that does not affect the sealing performance of a seal member and can sufficiently exhibit a separation preventing function, and a pipe joint including the device. The purpose is to provide.

前記課題を解決するために、本発明の離脱防止装置は、
一方の流路構成部材の受口部にリング状のシール部材を介して他方の流路構成部材の挿口部を挿入し、密封状に接続される接続箇所に設けられ、前記流路構成部材同士の離脱を防止する離脱防止装置であって、
前記挿口部の外周面に外嵌され、前記外周面に対向する内周部を有する本体部材と、前記本体部材の内周部に収容され、前記本体部材により内径方向に押圧されることで前記挿口部の外周面に係止される係止部材と、前記係止部材及び前記シール部材の間に設けられ、前記シール部材を密封状態で保持する保持部材と、を少なくとも備え、
前記係止部材と、前記シール部材及び前記保持部材よりも外径側の前記受口部の端部との間に、前記係止部材の軸方向の進入を規制する介設体が設けられることを特徴としている。
この特徴によれば、係止部材の軸方向の進入を規制する介設体が、当該係止部材と、シール部材及び保持部材よりも外径側の受口部の端部との間に設けられているため、シール部材及び保持部材による密封性に影響を及ぼすことなく、且つ係止部材に与える軸方向の押圧力を遮断した状態で、更に本体部材により係止部材に内径方向の押圧力を与える結果、係止部材による所期の離脱防止機能を発揮させることができる。 In order to solve the above problems, the separation prevention device of the present invention is
The flow path forming member is provided at a connection point where the insertion opening of the other flow path forming member is inserted into the receiving part of the one flow path forming member via a ring-shaped seal member and is hermetically connected. A separation prevention device for preventing separation from each other,
By being externally fitted to the outer peripheral surface of the insertion opening and having a main body member having an inner peripheral portion facing the outer peripheral surface, and being housed in the inner peripheral portion of the main body member and being pressed in the inner diameter direction by the main body member. At least a locking member that is locked to the outer peripheral surface of the insertion opening, and a holding member that is provided between the locking member and the sealing member and that holds the sealing member in a sealed state,
An interposition body is provided between the locking member and the end of the receiving portion on the outer diameter side of the sealing member and the holding member to restrict the axial movement of the locking member. Is characterized by.
According to this feature, the interposition body that restricts the axial entry of the locking member is provided between the locking member and the end of the receiving portion on the outer diameter side of the sealing member and the holding member. Therefore, while the sealing member and the holding member do not affect the sealing performance, and the axial pressing force applied to the locking member is blocked, the main body member further presses the locking member in the inner diameter direction. As a result, the desired separation prevention function of the locking member can be exerted.

前記介設体は、前記係止部材と一体に形成されていることを特徴としている。
この特徴によれば、係止部材が介設体と一体であるため、係止部材を挿口部の所定位置に対し正確に係止させることができる。 The interposition body is formed integrally with the locking member.
According to this feature, since the locking member is integral with the interposition body, the locking member can be accurately locked at the predetermined position of the insertion opening.

前記介設体は、前記係止部材と別体に形成されていることを特徴としている。
この特徴によれば、係止部材が介設体と別体であるため、離脱方向の外力が作用した際に、係止部材を単独で挿口部に対し容易に傾動させることができる。 The interposition body is formed separately from the locking member.
According to this feature, since the locking member is separate from the interposition body, when the external force in the detaching direction acts, the locking member alone can be easily tilted with respect to the insertion opening.

前記介設体は、前記係止部材の周方向の略中央部に設けられることを特徴としている。
この特徴によれば、周方向の略中央部に設けられた介設体により、係止部材を軸方向に対し傾くことなく進入規制することができる。 The intermediate body is provided at a substantially central portion in the circumferential direction of the locking member.
According to this feature, the interposition body provided at the substantially central portion in the circumferential direction can restrict the entering of the locking member without tilting with respect to the axial direction.

本発明の管継手は、
前記一方の流路構成部材である受口管と、前記他方の流路構成部材である挿口管と、前記シール部材と、前記離脱防止装置と、を有することを特徴としている。
この特徴によれば、シール部材及び保持部材による密封性に影響を及ぼすことなく、且つ係止部材による所期の離脱防止機能を発揮した管継手を供することができる。 The pipe joint of the present invention,
It is characterized by having a receiving pipe which is the one flow path forming member, an insertion pipe which is the other flow path forming member, the sealing member, and the separation preventing device.
According to this feature, it is possible to provide a pipe joint that does not affect the sealing performance of the seal member and the holding member and that exerts an intended disengagement prevention function of the locking member.

実施例１における管継手を示す側断面図である。FIG. 3 is a side sectional view showing a pipe joint in the first embodiment. （ａ）は実施例１における押輪の上面図及び押輪を後端側から見た図、（ｂ）は実施例１における押輪のＡ−Ａ断面図及び押輪を先端側から見た図である。(A) is a top view of the push ring in the first embodiment and a view of the push ring seen from the rear end side, and (b) is a cross-sectional view of the push ring taken along the line AA in the first example and a view of the push ring seen from the front end side. （ａ）は、第１フォルダ部材を後端側から見た図及びＢ−Ｂ断面図、（ｂ）は、第２フォルダ部材を先端側から見た図及びＣ−Ｃ断面図である。(A) is the figure which looked at the 1st folder member from the rear end side, and BB sectional drawing, (b) is the figure which looked at the 2nd folder member from the tip side, and CC sectional view. （ａ）は、フォルダユニットの組立を示す模式図、（ｂ）は、組み上がったフォルダユニットを示す側断面図、（ｃ）は、係止部材を後端側から見た図である。(A) is a schematic diagram which shows the assembly of a folder unit, (b) is a sectional side view which shows the assembled folder unit, (c) is the figure which looked at the locking member from the rear end side. （ａ）は、実施例１における離脱防止装置及び挿口部と受口部との位置合わせをした状態を示す側断面図、（ｂ）は、離脱防止装置及び挿口部を受口部に挿入した状態を示す側断面図である。(A) is a side sectional view showing a state in which the separation prevention device and the insertion part and the receiving part are aligned with each other in Embodiment 1, and (b) shows the separation prevention device and the insertion part in the reception part. It is a sectional side view which shows the state inserted. （ａ）は、実施例１における押輪を受口部に対して近接させた状態を示す側断面図、（ｂ）は、（ａ）の状態から係止部材及び挿口部が離脱方向に移動した状態を示す側断面図である。(A) is a side sectional view showing a state in which a push wheel in Example 1 is brought close to a receiving portion, and (b) is a state in which the locking member and the insertion portion are moved in the detaching direction from the state of (a). It is a side sectional view showing the state. （ａ）は実施例２における第１フォルダ部を後端側から見た図、（ｂ）は、第２フォルダ部を先端側から見た図であり、（ｃ）は、フォルダのＤ−Ｄ断面図である。(A) is the figure which looked at the 1st folder part in Example 2 from the rear end side, (b) is the figure which looked at the 2nd folder part from the front end side, (c) is DD of a folder FIG. （ａ）は、実施例２における離脱防止装置及び挿口部と受口部との位置合わせをした状態を示す側断面図、（ｂ）は、離脱防止装置及び挿口部を受口部に挿入した状態を示す側断面図である。(A) is a side sectional view showing a state in which the separation prevention device and the insertion part and the receiving part are aligned with each other in Embodiment 2, and (b) shows the separation prevention device and the insertion part in the reception part. It is a sectional side view which shows the state inserted. （ａ）は、実施例２における押輪を受口部に対して近接させた状態を示す側断面図、（ｂ）は、（ａ）の状態から係止部材及び挿口部が離脱方向に移動した状態を示す側断面図である。(A) is a side sectional view showing a state in which a push wheel in Example 2 is brought close to a receiving portion, and (b) is a state in which the locking member and the insertion portion are moved in the detaching direction from the state of (a). It is a side sectional view showing the state. （ａ）は実施例３における押輪の上面図及び押輪を後端側から見た図、（ｂ）は実施例３における押輪のＥ−Ｅ断面図及び押輪を先端側から見た図である。(A) is a top view of the push ring in the third embodiment and a view of the push ring seen from the rear end side, and (b) is a sectional view of the push ring in the third embodiment taken along the line EE and a view of the push ring seen from the front end side. （ａ）は実施例３における押え部材を後端側から見た図、（ｂ）はＦ−Ｆ断面図である。(A) is the figure which looked at the pressing member in Example 3 from the rear end side, (b) is FF sectional drawing. （ａ）は実施例３において係止部材を押輪に取付けた状態を示す説明図、（ｂ）は、（ａ）の状態から押え部材を取付けた状態を示す説明図である。(A) is explanatory drawing which shows the state which attached the locking member to the push ring in Example 3, (b) is explanatory drawing which shows the state which attached the pressing member from the state of (a). （ａ）は、実施例３における離脱防止装置及び挿口部と受口部との位置合わせをした状態を示す側断面図、（ｂ）は、離脱防止装置及び挿口部を受口部に挿入した状態を示す側断面図である。(A) is a side sectional view showing a state in which the separation prevention device and the insertion part and the reception part are aligned with each other in Embodiment 3, and (b) shows the separation prevention device and the insertion part in the reception part. It is a sectional side view which shows the state inserted. （ａ）は、実施例３における押輪を受口部に対して近接させた状態を示す側断面図、（ｂ）は、（ａ）の状態から係止部材及び挿口部が離脱方向に移動した状態を示す側断面図である。(A) is a side sectional view showing a state in which a push wheel in Example 3 is brought close to a receiving portion, and (b) is a state in which the locking member and the insertion portion are moved in the detaching direction from the state of (a). It is a side sectional view showing the state. （ａ）は実施例４における押輪の上面図及び押輪を後端側から見た図、（ｂ）は実施例４における押輪のＧ−Ｇ断面図及び押輪を先端側から見た図である。(A) is a top view of the push ring in Example 4 and a view of the push ring seen from the rear end side, and (b) is a GG cross-sectional view of the push ring in Example 4 and a diagram of the push ring seen from the front end side. （ａ）は、実施例４における離脱防止装置及び挿口部と受口部との位置合わせをした状態を示す側断面図、（ｂ）は、離脱防止装置及び挿口部を受口部に挿入した状態を示す側断面図である。(A) is a side sectional view showing a state in which the separation prevention device and the insertion part and the reception part are aligned with each other in Embodiment 4, and (b) shows the separation prevention device and the insertion part in the reception part. It is a sectional side view which shows the state inserted. （ａ）は、実施例４における押輪を受口部に対して近接させた状態を示す側断面図、（ｂ）は、（ａ）の状態から係止部材及び挿口部を離脱方向に移動させた状態を示す側断面図である。(A) is a side sectional view showing a state in which a push wheel in Example 4 is brought close to a receiving portion, and (b) is a state in which the locking member and the insertion portion are moved in the detaching direction from the state of (a). It is a side sectional view showing the state where it was made. （ａ）は実施例５における押輪の上面図及び押輪を後端側から見た図、（ｂ）は実施例５における押輪のＨ−Ｈ断面図及び押輪を先端側から見た図である。(A) is a top view of the push ring in the fifth embodiment and a view of the push ring seen from the rear end side, and (b) is a sectional view of the push ring in the fifth embodiment taken along the line H-H and a view of the push ring seen from the front end side. （ａ）は実施例５における押え部材にスペーサを取付けた状態を後端側から見た図、（ｂ）はＪ−Ｊ断面図である。(A) is the figure which looked at the state which attached the spacer to the presser member in Example 5 from the back end side, and (b) is the JJ sectional view. （ａ）は、実施例５における離脱防止装置及び挿口部と受口部との位置合わせをした状態を示す側断面図、（ｂ）は、離脱防止装置及び挿口部を受口部に挿入した状態を示す側断面図である。(A) is a side sectional view showing a state in which the separation prevention device and the insertion part and the reception part are aligned with each other in Embodiment 5, and (b) shows the separation prevention device and the insertion part in the reception part. It is a sectional side view which shows the state inserted. （ａ）は、実施例５における押輪を受口部に対して近接させた状態を示す側断面図、（ｂ）は、（ａ）の状態から係止部材及び挿口部が離脱方向に移動した状態を示す側断面図である。(A) is a side sectional view showing a state in which a push wheel in Example 5 is brought close to a receiving portion, and (b) is a state in which the locking member and the insertion portion are moved in the detaching direction from the state of (a). It is a side sectional view showing the state. （ａ）は実施例６における第１フォルダ部材にスペーサを取付けた状態を後端側から見た図、（ｂ）はＫ−Ｋ断面図である。(A) is the figure which looked at the state which attached the spacer to the 1st folder member in Example 6, and was seen from the back end side, (b) is a KK sectional view. （ａ）は、実施例６における離脱防止装置及び挿口部と受口部との位置合わせをした状態を示す側断面図、（ｂ）は、離脱防止装置及び挿口部を受口部に挿入した状態を示す側断面図である。(A) is a side sectional view showing a state in which the separation prevention device and the insertion part and the reception part are aligned with each other in Embodiment 6, and (b) shows the separation prevention device and the insertion part in the reception part. It is a sectional side view which shows the state inserted. （ａ）は、実施例６における押輪を受口部に対して近接させた状態を示す側断面図、（ｂ）は、（ａ）の状態から係止部材及び挿口部が離脱方向に移動した状態を示す側断面図である。(A) is a side sectional view showing a state in which a push wheel in Example 6 is brought close to a receiving portion, and (b) is a state in which the locking member and the insertion portion are moved in the detaching direction from the state of (a). It is a side sectional view showing the state.

本発明に係る離脱防止装置及びこの装置を備えた管継手を実施するための形態を実施例に基づいて以下に説明する。 Modes for carrying out a separation prevention device according to the present invention and a pipe joint including the device will be described below based on Examples.

実施例１に係る離脱防止装置及び管継手につき、図１から図６を参照して説明する。尚、図１の右側（挿口管の先端側）を先端側とし、また図１の左側を後端側として説明する。 The separation prevention device and the pipe joint according to the first embodiment will be described with reference to FIGS. 1 to 6. Note that the right side of FIG. 1 (the tip side of the insertion tube) will be referred to as the tip side, and the left side of FIG. 1 will be referred to as the rear end side.

図１に示すように、本実施例の挿口管１（他方の流路構成部材）及び受口管２（一方の流路構成部材）は、例えば、地中に埋設される上水道用のダクタイル鋳鉄製であり、管路部は、内周面がモルタル層で被覆されている。尚、本発明に係る挿口管１及び受口管２は、その他鋳鉄、鋼等の金属製、あるいは石綿、コンクリート製、塩化ビニール、ポリエチレン若しくはポリオレフィン製等であってもよい。更に尚、挿口管１及び受口管２の内周面はモルタル層に限らず、例えばエポキシ樹脂等により被覆されてもよく、若しくは適宜の材料を粉体塗装により挿口管１及び受口管２の内周面に被覆してもよい。また、挿口管１及び受口管２内の流体は、本実施例の上水に限らず、例えば工業用水や農業用水、下水等の他、ガスやガスと液体との気液混合体であっても構わない。 As shown in FIG. 1, the inlet pipe 1 (the other flow path forming member) and the receiving pipe 2 (the one flow path forming member) of the present embodiment are, for example, ductiles for waterworks buried in the ground. It is made of cast iron, and the inner peripheral surface of the conduit is covered with a mortar layer. The inlet pipe 1 and the inlet pipe 2 according to the present invention may be made of other metal such as cast iron or steel, or made of asbestos, concrete, vinyl chloride, polyethylene or polyolefin. Furthermore, the inner peripheral surfaces of the mouthpiece tube 1 and the mouthpiece tube 2 are not limited to the mortar layer, and may be coated with, for example, an epoxy resin or the like, or an appropriate material may be powder-coated to form the mouthpiece tube 1 and the mouthpiece tube. The inner peripheral surface of the tube 2 may be coated. The fluid in the inlet pipe 1 and the inlet pipe 2 is not limited to tap water in this embodiment, but may be, for example, industrial water, agricultural water, sewage, or a gas or a gas-liquid mixture of gas and liquid. It doesn't matter.

図１に示すように、本実施例の管継手１０は、挿口管１の端部に形成された挿口部１ａと、受口管２の端部に形成され挿口部１ａが挿入される受口部２０と、離脱防止装置１１と、から主に構成されている。更に離脱防止装置１１は、挿口部１ａの外周面１ｂに外嵌される押輪３（本体部材）と、ゴム製の環状のパッキン４（シール部材）と、環状のフォルダユニット５と、から主に構成されている。 As shown in FIG. 1, the pipe joint 10 of the present embodiment has an insertion opening 1a formed at the end of the insertion tube 1 and an insertion opening 1a formed at the end of the receiving tube 2. It is mainly composed of a receiving part 20 and a separation prevention device 11. Further, the detachment prevention device 11 mainly includes a push ring 3 (main body member) fitted on the outer peripheral surface 1b of the insertion opening 1a, a rubber annular packing 4 (sealing member), and an annular folder unit 5. Is configured.

受口部２０は、その開口側端部の外周面の周方向に所定間隔離間して複数のフランジ２５（図１では１つのみ示す）が形成されており、各フランジ２５には、押輪３のフランジ３５と接続するための貫通孔２８が形成されている。受口部２０の内周面には、開口側端部から管軸方向の内方に向けて漸次縮径するテーパ面２０ｃが形成されている。なお、フランジ２５，３５は、複数のみならず、周方向に一体に形成されてもよく、例えば、後端側から見て略矩形状ではなく略円形に単数としてもよい。 The receiving portion 20 is formed with a plurality of flanges 25 (only one is shown in FIG. 1) at predetermined intervals in the circumferential direction of the outer peripheral surface of the opening-side end of the receiving portion 20, and each of the flanges 25 has a push ring 3. Through hole 28 for connecting to the flange 35 of the. A taper surface 20c is formed on the inner peripheral surface of the receiving portion 20 so that the diameter gradually decreases from the opening-side end portion toward the inner side in the pipe axis direction. The flanges 25 and 35 may be integrally formed in the circumferential direction as well as a plurality of flanges. For example, the flanges 25 and 35 may be formed in a substantially circular shape as viewed from the rear end side and may be a single shape.

パッキン４は、挿口部１ａの外周面１ｂに外嵌される環状を成し、自然状態で断面視略円形状に形成された先端部４ａと、断面視略台形状に形成された基部４ｂと、先端部４ａが形成されている一端とは反対側の底部４ｃと、から形成されている（図５参照）。 The packing 4 has an annular shape that is externally fitted to the outer peripheral surface 1b of the insertion opening 1a, and has a distal end portion 4a formed in a substantially circular shape in cross section and a base portion 4b formed in a substantially trapezoidal shape in cross section in a natural state. And a bottom portion 4c on the side opposite to the one end where the tip portion 4a is formed (see FIG. 5).

図２に示されるように、押輪３は、軸方向から見て略矩形状の外形を成すとともに中央部に挿通孔３０が形成される筒状体であり、押輪３の４つの角部それぞれには、貫通孔３８が軸方向に形成されている。また、挿口部１ａが挿通される押輪３の挿通孔３０の内周部には、挿口部１ａの先端側（受口部２０側の端部側）から順に、嵌合凹部３０ａ、収容部３０ｂ、テーパ部３０ｃ、小径部３０ｄが連続して形成されている（特に図２（ｂ）のＡ−Ａ断面図参照）。 As shown in FIG. 2, the push wheel 3 is a tubular body having a substantially rectangular outer shape when viewed in the axial direction and having an insertion hole 30 formed in the central portion thereof. Has a through hole 38 formed in the axial direction. In addition, in the inner peripheral portion of the insertion hole 30 of the push wheel 3 into which the insertion opening 1a is inserted, the fitting recess 30a and the housing are sequentially arranged from the front end side of the insertion opening 1a (the end side on the reception opening 20 side). The portion 30b, the tapered portion 30c, and the small diameter portion 30d are continuously formed (in particular, see the A-A sectional view of FIG. 2B).

嵌合凹部３０ａは、その内部に後述する第１フォルダ部材５１の環状部５２を嵌合可能となっている。この嵌合凹部３０ａは、押輪３の先端部（受口部２０側の端部）の外縁を除いて略全面が後端部側に凹むように形成されている。 The fitting recess 30a is capable of fitting an annular portion 52 of a first folder member 51 described later therein. The fitting recessed portion 30a is formed such that substantially the entire surface thereof is recessed toward the rear end portion side except for the outer edge of the tip end portion (end portion on the receiving port 20 side) of the push wheel 3.

収容部３０ｂは、その内部に後述する係止部材６，６，…を嵌合可能となっている。詳しくは、収容部３０ｂには、外径方向に膨出する４つの溝部３０ｇ，３０ｇ，…が周方向に所定間隔離間して形成されており、溝部３０ｇ，３０ｇ，…には、後述する係止部材６，６，…の鍔部７，７，…が嵌入可能になっている。 The housing portion 30b is capable of fitting locking members 6, 6,... More specifically, four groove portions 30g, 30g, ... that bulge in the outer diameter direction are formed in the housing portion 30b at predetermined intervals in the circumferential direction, and the groove portions 30g, 30g, ... will be described later. The collar portions 7, 7,... Of the stop members 6, 6,... Can be fitted.

テーパ部３０ｃは、収容部３０ｂから小径部３０ｄに向けて漸次縮径するテーパ面３０ｅと、テーパ面３０ｅにおける小径部３０ｄ側の端部から内径方向に立ち上がる奥端面３０ｆと、を備えている。この奥端面３０ｆは、挿通孔３０の軸方向に対して直交する方向に立ち上がっている。尚、小径部３０ｄは、挿口部１ａの外径よりも若干大径に形成されている。 The tapered portion 30c includes a tapered surface 30e that gradually decreases in diameter from the housing portion 30b toward the small diameter portion 30d, and an inner end surface 30f that rises in the inner diameter direction from the end portion of the tapered surface 30e on the small diameter portion 30d side. The rear end face 30f rises in a direction orthogonal to the axial direction of the insertion hole 30. The small diameter portion 30d is formed to have a diameter slightly larger than the outer diameter of the insertion opening 1a.

図１に示されるように、フォルダユニット５は、環状の第１フォルダ部材５１と、第１フォルダ部材５１より外径が小径な環状の第２フォルダ部材５６と、第１フォルダ部材５１と第２フォルダ部材５６との間に周方向に所定間隔を置いて取り付けられる４つの係止部材６，６，…と、から構成されている。尚、第１フォルダ部材５１は、係止部材６よりも受口部２０側に配置され、第２フォルダ部材５６は、係止部材６を挟んだ第１フォルダ部材５１の反対側に配置されている。 As shown in FIG. 1, the folder unit 5 includes an annular first folder member 51, an annular second folder member 56 having an outer diameter smaller than that of the first folder member 51, a first folder member 51, and a second folder member 51. .., which are attached to the folder member 56 at predetermined intervals in the circumferential direction. The first folder member 51 is arranged closer to the receiving portion 20 side than the locking member 6, and the second folder member 56 is arranged opposite to the first folder member 51 sandwiching the locking member 6. There is.

図３（ａ）に示されるように、第１フォルダ部材５１（保持部材）は、合成樹脂製であり、板状の環状部５２と、環状部５２から略直角に突出する４つの筒状部５３，５３，…と、から形成されている。環状部５２は、筒状部５３，５３，…側の面が内径方向に向けて縮径するように傾斜するテーパ面５２ａとなっており、このテーパ面５２ａの反対側の面が軸方向に直交する平坦面５２ｂとなっている。また、環状部５２の外周縁には、所定間隔を置いて４つの切欠き部５５，５５，…が形成されている。 As shown in FIG. 3A, the first folder member 51 (holding member) is made of synthetic resin, and has a plate-shaped annular portion 52 and four tubular portions that project from the annular portion 52 at a substantially right angle. , 53,... The surface of the annular portion 52 on the side of the tubular portions 53, 53,... Is a taper surface 52a inclined so as to decrease in diameter toward the inner diameter direction, and the surface on the opposite side of the taper surface 52a is oriented in the axial direction. It is a flat surface 52b orthogonal to each other. Further, on the outer peripheral edge of the annular portion 52, four cutout portions 55, 55,... Are formed at predetermined intervals.

筒状部５３は、軸方向から見て内径側が開放された略Ｃ字形状を成す凹部５３ｃを備えており、後述する第２フォルダ部材５６の凸部５８が嵌合可能となっている。尚、筒状部５３，５３，…は、隣接する切欠き部５５，５５，…間の略中間位置に配置されている。 The cylindrical portion 53 includes a recessed portion 53c having a substantially C shape whose inner diameter side is open when viewed from the axial direction, and a protruding portion 58 of a second folder member 56 described later can be fitted therein. The cylindrical portions 53, 53,... Are arranged at a substantially intermediate position between the adjacent cutout portions 55, 55,.

図３（ｂ）に示されるように、第２フォルダ部材５６は、合成樹脂製であり、第１フォルダ部材５１における環状部５２の外径よりも小径の外形を有する環状部５７と、環状部５７から略直角に突出する４つの凸部５８，５８，…と、から形成されており、凸部５８，５８，…を第１フォルダ部材５１の筒状部５３，５３，…の凹部５３ｃ，５３ｃ，…に嵌合させることで、第１フォルダ部材５１と第２フォルダ部材５６が組み合わせられて軸方向に連結される（図４参照）。また、この第２フォルダ部材５６の環状部５７の内径側には、環状のシール部材１２が装着されるようになっている（図５、図６参照）。 As shown in FIG. 3B, the second folder member 56 is made of synthetic resin, and has an annular portion 57 having an outer diameter smaller than the outer diameter of the annular portion 52 of the first folder member 51, and the annular portion. Are formed from four projecting portions 58, 58,..., Which project substantially at right angles from 57, and the projecting portions 58, 58,... Are recessed in the tubular portions 53, 53,. The first folder member 51 and the second folder member 56 are combined and axially coupled by fitting with 53c,... (See FIG. 4). The annular seal member 12 is mounted on the inner diameter side of the annular portion 57 of the second folder member 56 (see FIGS. 5 and 6).

尚、本実施例では、第１フォルダ部材５１及び第２フォルダ部材５６には、筒状部５３，５３，…及び凸部５８，５８，…がそれぞれ４つずつ設けられる形態を説明したが、係止部材６の数量や大きさ等に合わせて自由に設計してもよい。 In the present embodiment, the first folder member 51 and the second folder member 56 are described as having the cylindrical portions 53, 53,... And the convex portions 58, 58,. It may be freely designed according to the number and size of the locking members 6.

図４（ａ）に示されるように、第１フォルダ部材５１と第２フォルダ部材５６が連結された際には、第１フォルダ部材５１と第２フォルダ部材５６との間に係止部材６，６，…が挟持される（１つのみ図示）。 As shown in FIG. 4A, when the first folder member 51 and the second folder member 56 are connected, the locking members 6, 6 are provided between the first folder member 51 and the second folder member 56. 6,... are clamped (only one is shown).

図４（特に図４（ｃ））に示されるように、係止部材６は、軸方向から見て略弧状を成し、略弧状の複数の爪部６１，６１，…（本実施例では３つ）が並列して内径側に形成された基部６０と、基部６０の周方向の略中央において該基部６０の外周縁における先端部から軸方向に突出する鍔部７（介設体）と、から構成されている。この係止部材６は、ダクタイル鋳鉄製あるいは、その他の金属製、または樹脂製であり、鍔部７は、基部６０と一体形成されている。すなわち本実施例では、係止部材６と介設体である鍔部７とは、一体形成されている。 As shown in FIG. 4 (particularly FIG. 4C), the locking member 6 has a substantially arc shape when viewed from the axial direction, and has a plurality of substantially arc-shaped claw portions 61, 61,... (3) are formed in parallel on the inner diameter side, and a flange portion 7 (intermediate body) axially protruding from the distal end portion of the outer peripheral edge of the base portion 60 at approximately the center in the circumferential direction of the base portion 60. ,,. The locking member 6 is made of ductile cast iron, other metal, or resin, and the collar portion 7 is integrally formed with the base portion 60. That is, in this embodiment, the locking member 6 and the collar portion 7 which is the interposition body are integrally formed.

基部６０の外周縁における後端部には、鍔部７の反対方向に向けて先細りする第１テーパ面６２が設けられている。また、基部６０における先端側の側面（第１フォルダ部材５１側の端部）には、第１フォルダ部材５１のテーパ面５２ａと略平行となるように傾斜する第２テーパ面６３が設けられている。 A first taper surface 62 that tapers in a direction opposite to the collar portion 7 is provided at a rear end portion of the outer peripheral edge of the base portion 60. A second tapered surface 63 that is inclined so as to be substantially parallel to the tapered surface 52a of the first folder member 51 is provided on the side surface (the end portion on the first folder member 51 side) on the tip side of the base portion 60. There is.

図４（ｂ）に示されるように、係止部材６が第１フォルダ部材５１と第２フォルダ部材５６との間に挟持された状態にあっては、係止部材６と一体に形成された鍔部７が切欠き部５５に挿入されて係止されている。すなわち、係止部材６は、第１フォルダ部材５１と第２フォルダ部材５６との間に落下が規制された状態で保持される。 As shown in FIG. 4B, when the locking member 6 is sandwiched between the first folder member 51 and the second folder member 56, it is formed integrally with the locking member 6. The collar portion 7 is inserted and locked in the cutout portion 55. That is, the locking member 6 is held between the first folder member 51 and the second folder member 56 in a state in which falling is restricted.

次に、管継手１０により挿口管１と受口管２とを密封状態で接続するまでの一連の流れを図５〜図６を用いて詳しく説明する。 Next, a series of flow until the insertion pipe 1 and the receiving pipe 2 are connected in a sealed state by the pipe joint 10 will be described in detail with reference to FIGS.

先ず、図５（ａ）に示されるように、挿口管１の挿口部１ａに、フォルダユニット５（係止部材６，６，…、第１フォルダ部材５１及び第２フォルダ部材５６）を取付けた押輪３とパッキン４とを外嵌させた状態とする。上記状態にあっては、係止部材６，６，…は、その大部分が押輪３の収容部３０ｂ内に嵌合されており、係止部材６，６，…における後端側の一部と第２フォルダ部材５６とは、テーパ部３０ｃ内に収容されている。詳しくは、各係止部材６と一体の各鍔部７の外周面は、収容部３０ｂ（溝部３０ｇ）の内周面に近接するとともに、各係止部材６における第１テーパ面６２とテーパ部３０ｃにおけるテーパ面３０ｅとが当接するようになる。すなわち、挿口部１ａにフォルダユニット５を外嵌した際には、各係止部材６が押輪３の収容部３０ｂ及びテーパ部３０ｃ側に寄って配置されるため、各係止部材６の爪部６１，６１，…が挿口部１ａの外周面１ｂに接触せずに離間するように配置されている。 First, as shown in FIG. 5( a ), the folder unit 5 (the locking members 6, 6,..., The first folder member 51 and the second folder member 56) is attached to the insertion port 1 a of the insertion tube 1. The attached push wheel 3 and packing 4 are externally fitted. In the above state, most of the locking members 6, 6,... Are fitted in the housing portion 30b of the push wheel 3, and the locking members 6, 6,. The second folder member 56 and the second folder member 56 are housed in the tapered portion 30c. More specifically, the outer peripheral surface of each flange portion 7 integrated with each locking member 6 is close to the inner peripheral surface of the housing portion 30b (groove portion 30g), and the first tapered surface 62 and the taper portion of each locking member 6 are provided. The tapered surface 30e of 30c comes into contact. That is, when the folder unit 5 is fitted onto the insertion opening 1a, the locking members 6 are arranged closer to the housing portion 30b and the tapered portion 30c of the push wheel 3, so that the claws of the locking members 6 are arranged. The portions 61, 61,... Are arranged so as to be spaced apart without contacting the outer peripheral surface 1b of the insertion opening 1a.

尚、係止部材６，６，…は、第１フォルダ部材５１及び第２フォルダ部材５６に保持された状態で押輪３内に取付けられるため、押輪３への取付け作業時に係止部材６，６，…が落下することが防止され作業性が高くなっている。 Since the locking members 6, 6,... Are mounted inside the push ring 3 while being held by the first folder member 51 and the second folder member 56, the locking members 6, 6 are attached at the time of attachment work to the push ring 3. ,... are prevented from falling and the workability is improved.

次いで、押輪３の貫通孔３８と、受口部２０の貫通孔２８の軸を合わせ、Ｔ頭ボルト８０を貫通孔３８と貫通孔２８とに挿通した状態でナット８５をＴ頭ボルト８０の軸部先端に仮止めする。 Next, the through hole 38 of the push ring 3 and the through hole 28 of the receiving portion 20 are aligned with each other, and the nut 85 is inserted into the through hole 38 and the through hole 28, and the nut 85 is inserted into the shaft of the T head bolt 80. Temporarily fix it to the tip of the part.

次いで、図５（ｂ）に示されるように、挿口部１ａを受口部２０内に所定量挿入した後、押輪３、フォルダユニット５、及びパッキン４を受口部２０に近接するように軸方向に移動する。すると、パッキン４の先端部４ａが挿口部１ａの外周面１ｂと受口部２０の内周面との間で圧接される。前述のように、受口部２０には、開口側に拡径するテーパ面２０ｃが形成されているため、受口部２０に挿口部１ａを挿入しやすく、且つ挿入に伴い互いの軸心が一致するように位置決めされる。 Next, as shown in FIG. 5( b ), after inserting the insertion portion 1 a into the receiving portion 20 by a predetermined amount, the push ring 3, the folder unit 5, and the packing 4 are placed close to the receiving portion 20. Move in the axial direction. Then, the tip 4a of the packing 4 is pressed against the outer peripheral surface 1b of the insertion opening 1a and the inner peripheral surface of the receiving opening 20. As described above, since the receiving portion 20 is formed with the tapered surface 20c that expands in diameter toward the opening side, the insertion portion 1a can be easily inserted into the receiving portion 20 and the axial centers of the insertion portion 1a can be easily adjusted. Are positioned so that they match.

挿口部１ａを受口部２０に所定距離挿入し、押輪３を受口部２０に近接するように軸方向に移動すると、鍔部７の端面７ａが受口部２０の開口側端面２０ｄ（受口部の端部）に面当接し、係止部材６の受口部２０方向への移動が規制される。尚、鍔部７の端面７ａが受口部２０の開口側端面２０ｄに当接した際には、押輪３と受口部２０のフランジ２５とは挿入代を残して互いに離間しているとともに、第１フォルダ部材５１のテーパ面５２ａと係止部材６の第２テーパ面６３とは互いに接触している。 When the insertion portion 1a is inserted into the receiving portion 20 by a predetermined distance and the push wheel 3 is moved in the axial direction so as to be close to the receiving portion 20, the end surface 7a of the collar portion 7 has an end surface 20d on the opening side of the receiving portion 20 ( It comes into surface contact with the end portion of the receiving portion, and the movement of the locking member 6 toward the receiving portion 20 is restricted. When the end surface 7a of the collar portion 7 abuts on the opening-side end surface 20d of the receiving portion 20, the push wheel 3 and the flange 25 of the receiving portion 20 are separated from each other with an insertion margin left therebetween. The tapered surface 52a of the first folder member 51 and the second tapered surface 63 of the locking member 6 are in contact with each other.

この鍔部７の端面７ａ及び受口部２０の開口側端面２０ｄは、軸方向に対して直交する方向に立ち上がっているため、鍔部７の端面７ａ及び受口部２０の開口側端面２０ｄが面当接した際には、係止部材６を挿口部１ａに対し傾かせることなく受口部２０方向への移動を規制できる。 Since the end surface 7a of the flange portion 7 and the opening-side end surface 20d of the receiving portion 20 stand up in a direction orthogonal to the axial direction, the end surface 7a of the flange portion 7 and the opening-side end surface 20d of the receiving portion 20 are When they come into surface contact, the movement of the locking member 6 in the direction of the receiving portion 20 can be restricted without tilting the locking member 6 with respect to the inserting portion 1a.

また、鍔部７は、パッキン４や第１フォルダ部材５１等に比べて強度の高い受口部２０の開口側端面２０ｄに当接するため、係止部材６の受口部２０方向への移動を安定して規制できる。 Further, since the flange portion 7 abuts on the opening side end surface 20d of the receiving portion 20 having higher strength than the packing 4, the first folder member 51 and the like, the movement of the locking member 6 toward the receiving portion 20 is prevented. It can regulate stably.

さらに、鍔部７は、係止部材６の周方向の略中央部に設けられているため、鍔部７が受口部２０の開口側端面２０ｄに当接した際に、係止部材６に対して偏った力が働くことを抑制できる。具体的には、鍔部７が受口部２０の開口側端面２０ｄに当接した際に生じる反力を係止部材６全体に略均等に伝えることができるため、係止部材６の周方向の端部側を中心に径方向または軸方向等に回転しようとする偏荷重を抑制できる。 Further, since the flange portion 7 is provided at the substantially central portion in the circumferential direction of the locking member 6, when the flange portion 7 abuts on the opening side end surface 20d of the receiving portion 20, the locking member 6 is fixed. It is possible to prevent the biased force from working. Specifically, since the reaction force generated when the collar portion 7 abuts on the opening-side end surface 20d of the receiving portion 20 can be transmitted to the entire locking member 6 substantially evenly, the circumferential direction of the locking member 6 It is possible to suppress an eccentric load that tends to rotate in the radial direction or the axial direction around the end portion side of the.

また、鍔部７は、押輪３の溝部３０ｇに収容されているため、挿口部１ａの受口部２０への挿入作業時に鍔部７の位置ずれが規制される。すなわち、鍔部７は、押輪３の溝部３０ｇにより案内されるため、鍔部７を受口部２０の開口側端面２０ｄに偏当たりさせることなく、係止部材６の受口部２０側の移動を好適に規制できる。 Further, since the collar portion 7 is housed in the groove portion 30g of the push wheel 3, the positional deviation of the collar portion 7 is restricted during the insertion work of the insertion portion 1a into the receiving portion 20. That is, since the flange portion 7 is guided by the groove portion 30g of the push wheel 3, the locking member 6 moves toward the receiving portion 20 side without biasing the flange portion 7 against the opening-side end surface 20d of the receiving portion 20. Can be controlled appropriately.

次に、図６（ａ）に示されるように、Ｔ頭ボルト８０とナット８５とを締め付けることで、押輪３を受口部２０側に更に移動させる。前述のように、係止部材６は、鍔部７と受口部２０の開口側端面２０ｄとの面当接により受口部２０側の移動が規制されているため、これに伴い第２フォルダ部材５６は移動せずに係止部材６の後方側に留まる。 Next, as shown in FIG. 6A, the T-head bolt 80 and the nut 85 are tightened to further move the push wheel 3 to the receiving portion 20 side. As described above, the movement of the locking member 6 on the side of the receiving portion 20 is restricted by the surface contact between the flange portion 7 and the opening-side end surface 20d of the receiving portion 20, so that the second folder is accompanied by this. The member 56 does not move and remains behind the locking member 6.

一方、第１フォルダ部材５１は、押輪３の受口部２０側への移動に従って、その環状部５２がパッキン４の底部４ｃを受口部２０側に押し付けるように移動する。これにより、パッキン４の基部４ｂが受口部２０のテーパ面２０ｃ及び挿口部１ａの外周面に圧接され、挿口部１ａと受口部２０との間が密封される。また、第１フォルダ部材５１の環状部５２は、押輪３と受口部２０の開口側端面２０ｄとで挟持されるようになるため、パッキン４による挿口部１ａと受口部２０との密封状態が保持される。 On the other hand, the first folder member 51 moves so that the annular portion 52 presses the bottom portion 4c of the packing 4 toward the receiving portion 20 side as the push wheel 3 moves toward the receiving portion 20 side. As a result, the base portion 4b of the packing 4 is brought into pressure contact with the tapered surface 20c of the receiving portion 20 and the outer peripheral surface of the inserting portion 1a, and the gap between the inserting portion 1a and the receiving portion 20 is sealed. Further, since the annular portion 52 of the first folder member 51 is sandwiched between the push wheel 3 and the opening-side end surface 20d of the receiving portion 20, the packing 4 seals the insertion portion 1a and the receiving portion 20. State is retained.

すなわち、係止部材６よりも受口部２０側に配置される第１フォルダ部材５１のみが受口部２０側に移動し、第２フォルダ部材５６の移動が規制されるため、第１フォルダ部材５１と第２フォルダ部材５６とが相対的に離間するように移動して互いに分離する。詳しくは、第２フォルダ部材５６の凸部５８，５８，…が第１フォルダ部材５１の筒状部５３，５３，…の凹部５３ｃ，５３ｃ，…内で摺動して第１フォルダ部材５１と第２フォルダ部材５６との連結間隔が拡がる。したがって、第１フォルダ部材５１のテーパ面５２ａと係止部材６の第２テーパ面６３とは、軸方向に寸法Ｌ１分離間することとなる。 That is, since only the first folder member 51 arranged on the receiving portion 20 side with respect to the locking member 6 moves to the receiving portion 20 side, and the movement of the second folder member 56 is restricted, the first folder member is restricted. 51 and the second folder member 56 move so as to be relatively spaced apart from each other. More specifically, the protrusions 58, 58,... Of the second folder member 56 slide within the recesses 53c, 53c,... Of the cylindrical portions 53, 53,. The connection interval with the second folder member 56 increases. Therefore, the tapered surface 52a of the first folder member 51 and the second tapered surface 63 of the locking member 6 are separated by the dimension L1 in the axial direction.

また、係止部材６の受口部２０側の移動が規制された状態で押輪３が受口部２０側に移動すると、係止部材６の第１テーパ面６２と押輪３のテーパ面３０ｅとが摺動するようになり、これにより係止部材６が内径方向に押し付けられるようになる。つまり、押輪３の受口部２０への移動が第１テーパ面６２とテーパ面３０ｅとの摺動により係止部材６を内径方向に押圧する押圧力に変換された結果、係止部材６の爪部６１，６１，…が挿口部１ａの外周面１ｂに食い込むことになる。鍔部７が係止部材６の軸方向の進入を規制した状態で、爪部６１，６１，…の挿口部１ａの外周面１ｂに食い込むため、挿口管１の先端側の端部が受口部３０内周側部に当接して挿入困難になる虞を防ぎながら効果的な食い込みを実現でき、爪部６１，６１，…のうち後端部側の爪部６１に食い込みが集中し、所期の初期状態食い込みを実現する。 When the push wheel 3 moves to the receiving portion 20 side while the movement of the locking member 6 on the receiving portion 20 side is restricted, the first tapered surface 62 of the locking member 6 and the tapered surface 30e of the pushing wheel 3 Slides, and thus the locking member 6 is pressed in the inner diameter direction. That is, the movement of the push wheel 3 to the receiving portion 20 is converted into a pressing force that presses the locking member 6 in the inner diameter direction by sliding the first tapered surface 62 and the tapered surface 30e, and as a result, the locking member 6 moves. The claw portions 61, 61,... Bite into the outer peripheral surface 1b of the insertion portion 1a. Since the collar portion 7 cuts into the outer peripheral surface 1b of the insertion opening portion 1a of the claw portions 61, 61,... In a state in which the locking member 6 is prevented from entering in the axial direction, the end portion of the insertion end tube 1 on the distal end side is It is possible to realize effective biting while preventing contact with the inner peripheral side portion of the receiving section 30 and difficulty in insertion, and the biting is concentrated on the claw portion 61 on the rear end side of the claw portions 61, 61,.... Achieve the desired initial state bite.

このように、係止部材６の軸方向の進入を規制する鍔部７が、当該係止部材６と、パッキン４及び第１フォルダ部材５１よりも外径側の受口部２０の開口側端面２０ｄとの間に設けられているため、係止部材６及び鍔部７がパッキン４に直接接触することが無い。そのため、第１フォルダ部材５１で保持されるパッキン４による密封性に影響を及ぼすことを防止できるとともに、係止部材６の傾き等を抑制して該係止部材６による所期の離脱防止機能を発揮させることができる。 As described above, the flange portion 7 that restricts the axial entry of the locking member 6 has the opening-side end surface of the receiving portion 20 on the outer diameter side of the locking member 6 and the packing 4 and the first folder member 51. Since it is provided between 20d and 20d, the locking member 6 and the collar portion 7 do not come into direct contact with the packing 4. Therefore, it is possible to prevent the sealing property of the packing 4 held by the first folder member 51 from being affected, and to suppress the inclination and the like of the locking member 6 so as to prevent the locking member 6 from coming off. Can be demonstrated.

尚、鍔部７は、パッキン４に直接接触することが無いため、鍔部７の形状及び大きさの設計自由度が増し、例えば鍔部７が受口部２０の開口側端面２０ｄに当接する領域を大きくできる。これにより、係止部材６の受口部２０への移動を安定的に規制することができる。 Since the collar portion 7 does not come into direct contact with the packing 4, the degree of freedom in designing the shape and size of the collar portion 7 increases, and, for example, the collar portion 7 abuts on the opening-side end surface 20d of the receiving portion 20. The area can be enlarged. Thereby, the movement of the locking member 6 to the receiving portion 20 can be stably regulated.

また、鍔部７は、係止部材６と一体に形成されているため、係止部材６を挿口部１ａの外周面１ｂの所定位置に対し正確に係止させることができる。具体的には、鍔部７は、係止部材６と一体に形成されているため、鍔部７が受口部２０の開口側端面２０ｄに当接した際に生じる反力が係止部材６に対して直接伝わるため、係止部材６を内径方向に押圧する押圧力が分散されることがなく、係止部材６を挿口部１ａの外周面１ｂに正確に係止できる。 Further, since the collar portion 7 is formed integrally with the locking member 6, the locking member 6 can be accurately locked at a predetermined position on the outer peripheral surface 1b of the insertion opening 1a. Specifically, since the collar portion 7 is formed integrally with the locking member 6, a reaction force generated when the collar portion 7 comes into contact with the opening-side end surface 20 d of the receiving portion 20 is the locking member 6. Therefore, the pressing force for pressing the locking member 6 in the inner diameter direction is not dispersed, and the locking member 6 can be accurately locked to the outer peripheral surface 1b of the insertion opening 1a.

また、前述のように、係止部材６の傾き等が規制された状態で受口部２０側の移動が規制されているため、係止部材６の爪部６１，６１，…が挿口部１ａの外周面１ｂに対し略均等に食い込むようになる。換言すれば、係止部材６の爪部６１，６１，…が局所的に挿口部１ａの外周面１ｂに食い込むことを抑制できる。 Further, as described above, the movement of the receiving member 20 side is restricted in a state where the inclination and the like of the locking member 6 are restricted, so that the claw portions 61, 61,... The outer peripheral surface 1b of the la 1a bites into the outer peripheral surface 1b substantially uniformly. In other words, it is possible to prevent the claw portions 61, 61,... Of the locking member 6 from locally cutting into the outer peripheral surface 1b of the insertion opening 1a.

次いで、図６（ｂ）に示されるように、挿口部１ａを受口部２０から離脱する方向に地震等の不測の外力が作用した場合について説明する。この外力により、係止部材６が挿口部１ａと一緒に受口部２０から離れる方向に移動する。具体的には、第１フォルダ部材５１のテーパ面５２ａと係止部材６の第２テーパ面６３とが軸方向に寸法Ｌ１よりも大きな寸法Ｌ２分離間することとなる（Ｌ１＜Ｌ２）。 Next, as shown in FIG. 6B, a case will be described in which an unexpected external force such as an earthquake acts in a direction in which the insertion opening 1a is separated from the receiving opening 20. Due to this external force, the locking member 6 moves together with the insertion opening 1a in a direction away from the receiving opening 20. Specifically, the tapered surface 52a of the first folder member 51 and the second tapered surface 63 of the locking member 6 are separated in the axial direction by a dimension L2 larger than the dimension L1 (L1<L2).

このように、係止部材６が挿口部１ａと一緒に受口部２０から離れる方向に移動するため、係止部材６は、押輪３のテーパ面３０ｅによってさらに内径方向へと押圧され、爪部６１が挿口部１ａの外周面１ｂにさらに食い込む。この際、爪部６１は楔効果と後端部側爪部６１を中心とした係止部材６の傾動効果で食い込み、効果的な離脱防止力を発揮するが、前述したように後端部側爪部６１に初期状態で食い込み力が集中しているので、係止部材６の傾動により先端部側爪部６１の食い込みが過度にならず、各爪部６１，６１，…が均等な食い込みを発揮しながらも、管内周面（例えばモルタル層）への影響をも抑えることができる。係止部材６の爪部６１の刃先は、受口部２０側を向くように径方向（軸方向と直交する方向）に対して傾斜しているため、係止部材６は挿口部１ａと受口部２０との離脱方向への楔効果を発揮することができる。 In this way, the locking member 6 moves together with the insertion opening 1a in a direction away from the receiving portion 20, so that the locking member 6 is further pressed in the inner diameter direction by the tapered surface 30e of the push wheel 3 and The portion 61 further cuts into the outer peripheral surface 1b of the insertion opening 1a. At this time, the claw portion 61 bites due to the wedge effect and the tilting effect of the locking member 6 around the rear end side claw portion 61, and exerts an effective detachment prevention force. Since the biting force is concentrated on the claws 61 in the initial state, the tip end side claws 61 do not excessively bite due to the tilting of the locking member 6, and the claws 61, 61,... While exerting the effect, it is possible to suppress the influence on the inner peripheral surface of the pipe (for example, the mortar layer). Since the blade edge of the claw portion 61 of the locking member 6 is inclined with respect to the radial direction (direction orthogonal to the axial direction) so as to face the receiving portion 20 side, the locking member 6 is formed as the insertion portion 1a. It is possible to exert a wedge effect in the direction of separation from the receiving portion 20.

また、挿口部１ａが受口部２０から離脱する方向に移動すると、第２フォルダ部材５６の環状部５７と押輪３の奥端面３０ｆとでシール部材１２が狭圧され、押輪３と挿口部１ａとの間が密封される。さらに上記した係止部材６の移動によっても、第１フォルダ部材５１は移動することなくパッキン４を保持し続けるため、パッキン４の密封性を維持することができる。 Further, when the insertion opening 1a moves in the direction in which it separates from the receiving opening 20, the sealing member 12 is narrowed by the annular portion 57 of the second folder member 56 and the rear end surface 30f of the pressing wheel 3, and the pressing wheel 3 and the insertion opening. The part 1a is hermetically sealed. Further, even when the locking member 6 moves, the first folder member 51 continues to hold the packing 4 without moving, so that the sealing property of the packing 4 can be maintained.

また、各係止部材６は、押輪３の溝部３０ｇに嵌合しているため、挿口管１に周方向へ回転する力が働いた際には、溝部３０ｇにより係止部材６が規制され挿口管１の回転を防ぐことができる。 Further, since each locking member 6 is fitted in the groove portion 30g of the push wheel 3, when the force rotating the insertion tube 1 in the circumferential direction acts, the locking member 6 is regulated by the groove portion 30g. The rotation of the insertion tube 1 can be prevented.

尚、本実施例では、係止部材６を４つ用いる形態を例示したが、本発明はこれに限定されるものではなく、係止部材の数量は挿口部の外径等に合わせて適宜変更することができる。さらに尚、係止部材６には３つの爪部６１，６１，…が設けられていたが、少なくとも１つ設けられていれば、爪部の数量を適宜変更してもよいし、爪部の形状も自由に変更できる。 In addition, in the present embodiment, the mode in which four locking members 6 are used is illustrated, but the present invention is not limited to this, and the number of locking members is appropriately set according to the outer diameter of the insertion opening and the like. Can be changed. Furthermore, the locking member 6 was provided with three claw portions 61, 61,..., However, if at least one claw portion is provided, the number of claw portions may be changed as appropriate, or the number of claw portions may be changed. The shape can be changed freely.

また、本実施例では、ダクタイル鋳鉄製の挿口管１及び受口管２を用いる形態であるため、離脱防止機能を高めるために係止部材６を複数用いていたが、例えば、挿口管及び受口管が塩化ビニール、ポリエチレン若しくはポリオレフィン等の合成樹脂製である場合には、正面視略Ｃ字状となるように周方向に連続する１つの係止部材を用いてもよい。 Further, in the present embodiment, since the insertion pipe 1 and the reception pipe 2 made of ductile cast iron are used, a plurality of locking members 6 are used to enhance the detachment prevention function. When the receiving pipe is made of a synthetic resin such as vinyl chloride, polyethylene, or polyolefin, one locking member continuous in the circumferential direction may be used so as to have a substantially C-shape when viewed from the front.

次に、実施例２に係る離脱防止装置及び管継手につき、図７〜図９を参照して説明する。尚、前記実施例と同一構成部分と同一構成部分については同一符号を付して重複する説明を省略する。 Next, a separation prevention device and a pipe joint according to the second embodiment will be described with reference to FIGS. 7 to 9. The same components as those of the above-described embodiment are designated by the same reference numerals, and the duplicated description will be omitted.

本実施例における係止部材６は、フォルダ２５０により保持されている（図８参照）。図７に示されるように、フォルダ２５０は、係止部材６の先端部側に配置される第１フォルダ部２５１（保持部材）と、係止部材６の後端部側に配置される第２フォルダ部２５６と、第１フォルダ部２５１及び第２フォルダ部２５６を連結する複数の連結部２５３，２５３，…と、から主に構成されている。これら第１フォルダ部２５１、第２フォルダ部２５６及び連結部２５３，２５３，…は、合成樹脂により一体形成されている。 The locking member 6 in this embodiment is held by the folder 250 (see FIG. 8). As shown in FIG. 7, the folder 250 includes a first folder portion 251 (holding member) arranged on the tip end side of the locking member 6 and a second folder portion 251 arranged on the rear end side of the locking member 6. It is mainly composed of a folder part 256 and a plurality of connecting parts 253, 253,... For connecting the first folder part 251 and the second folder part 256. The first folder portion 251, the second folder portion 256, and the connecting portions 253, 253,... Are integrally formed of synthetic resin.

第１フォルダ部２５１は、環状を成し、その外周縁には、所定間隔を置いて４つの切欠き部５５，５５，…が形成されている。第２フォルダ部２５６は、第１フォルダ部２５１の外径よりも小径の外径を有する環状を成しており、該第２フォルダ部２５６における第１フォルダ部２５１側の面には、突条部２５６ａ，２５６ａ，…が周方向に所定間隔離間して突出形成されている（本実施例では８つ）。 The first folder portion 251 has an annular shape, and four cutout portions 55, 55,... Are formed on the outer peripheral edge thereof at predetermined intervals. The second folder portion 256 has an annular shape having an outer diameter smaller than the outer diameter of the first folder portion 251, and the surface of the second folder portion 256 on the first folder portion 251 side has a ridge. The portions 256a, 256a,... Are projectingly formed at predetermined intervals in the circumferential direction (eight in this embodiment).

連結部２５３，２５３，…は、本実施例では８つ設けられており、係止部材６の周方向の長さと略同一幅で離間して一対を成すように周方向に４組配置されている。一対を成す連結部２５３，２５３の間には、係止部材６を収容できるようになっている。 In this embodiment, eight connecting portions 253, 253,... Are provided, and four sets are arranged in the circumferential direction so as to form a pair with a width substantially equal to the circumferential length of the locking member 6 and to form a pair. There is. The locking member 6 can be housed between the pair of connecting portions 253 and 253.

また、この連結部２５３は、板状を成す板状部２５３ａと、一対を成す他方の連結部２５３に向けて突出する膨出部２５３ｂと、を備えている。この膨出部２５３ｂは、係止部材６の周方向の両端に形成された図示しない凹部に対して嵌合するようになっており、一対を成す連結部２５３，２５３の間に係止部材６が収容された際に、係止部材６の周方向の移動を防止できるようになっている。 The connecting portion 253 includes a plate-shaped portion 253a having a plate shape, and a bulging portion 253b protruding toward the other connecting portion 253 forming a pair. The bulging portions 253b are adapted to fit into recesses (not shown) formed at both ends in the circumferential direction of the locking member 6, and the locking member 6 is provided between the pair of connecting portions 253 and 253. It is possible to prevent the locking member 6 from moving in the circumferential direction when is stored.

尚、板状部２５３ａは、軸方向（第１フォルダ部２５１及び第２フォルダ部２５６が離間する方向）に所定以上の引張力が働くことで破断または伸長可能なように、他の部位に比べて脆弱に形成されている。 It should be noted that the plate-shaped portion 253a is compared with other portions so that the plate-shaped portion 253a can be broken or extended by a tensile force of a predetermined amount or more acting in the axial direction (the direction in which the first folder portion 251 and the second folder portion 256 are separated). Are fragile.

挿口管１と受口管２とを接続する際には、前記実施例と同様に、図８（ａ）に示されるように、挿口部１ａに、係止部材６，６，…及びフォルダ２５０を取付けた押輪３とパッキン４とを外嵌させ、挿口部１ａを受口部２０の開口近傍に配置する。尚、係止部材６，６，…をフォルダ２５０に取付けた状態にあっては、突条部２５６ａ，２５６ａ，…が係止部材６，６，…の内径方向への移動を規制している。すなわち、係止部材６，６，…はフォルダ２５０に対し落下することなく保持されている。 When connecting the mouthpiece tube 1 and the mouthpiece tube 2, as shown in FIG. 8(a), the engaging members 6, 6,... The push wheel 3 to which the folder 250 is attached and the packing 4 are externally fitted to each other, and the insertion opening 1 a is arranged near the opening of the receiving opening 20. When the locking members 6, 6,... Are attached to the folder 250, the ridges 256a, 256a,... Restrict the movement of the locking members 6, 6,. .. That is, the locking members 6, 6,... Are held on the folder 250 without dropping.

次いで、図８（ｂ）に示されるように、挿口部１ａを受口部２０に所定距離挿入し、押輪３を受口部２０に近接するように軸方向に移動すると、鍔部７が受口部２０の開口側端面２０ｄに当接し、係止部材６の受口部２０方向への移動が規制される。 Next, as shown in FIG. 8B, when the insertion opening 1a is inserted into the receiving opening 20 by a predetermined distance and the push wheel 3 is moved in the axial direction so as to be close to the receiving opening 20, the collar 7 is removed. The contact with the opening-side end surface 20d of the receiving portion 20 restricts the movement of the locking member 6 toward the receiving portion 20.

次に、図９（ａ）に示されるように、Ｔ頭ボルト８０とナット８５とを締め付けることで、押輪３を受口部２０側に更に移動させる。これにより、第１フォルダ部２５１と第２フォルダ部２５６とが相対的に離間するように移動するため、前述した各連結部２５３の板状部２５３ａ（脆弱部）が破断または伸長するとともに、係止部材６の爪部６１，６１，…が挿口部１ａの外周面１ｂに食い込むようになる。このとき、第１フォルダ部２５１が押輪３と受口部２０の開口側端面２０ｄとで挟持されるようになるため、パッキン４による挿口部１ａと受口部２０との密封状態が保持される。 Next, as shown in FIG. 9A, the T-head bolt 80 and the nut 85 are tightened to further move the push ring 3 to the receiving portion 20 side. As a result, the first folder portion 251 and the second folder portion 256 move so as to be relatively separated from each other, so that the plate-like portion 253a (weakened portion) of each connecting portion 253 described above breaks or extends, and The claw portions 61, 61,... Of the stop member 6 bite into the outer peripheral surface 1b of the insertion opening 1a. At this time, the first folder portion 251 is clamped between the push wheel 3 and the opening-side end surface 20d of the receiving portion 20, so that the sealed state between the insertion portion 1a and the receiving portion 20 by the packing 4 is maintained. It

そして、図９（ｂ）に示されるように、挿口部１ａを受口部２０から離脱する方向に地震等の不測の外力が作用した場合、この外力により、係止部材６をさらに挿口部１ａの外周面１ｂにさらに食い込ませることで楔効果と傾動効果を発揮し、挿口管１と受口管２との離脱を防止する。 Then, as shown in FIG. 9B, when an unexpected external force such as an earthquake acts in a direction in which the insertion opening 1a is separated from the receiving opening 20, the locking member 6 is further inserted through the external force. By further digging into the outer peripheral surface 1b of the portion 1a, a wedge effect and a tilting effect are exhibited, and the detachment of the insertion tube 1 and the receiving tube 2 is prevented.

次に、実施例３に係る離脱防止装置及び管継手につき、図１０〜図１４を参照して説明する。尚、前記実施例に示される構成部分と同一構成部分については同一符号を付して重複する説明を省略する。 Next, a separation prevention device and a pipe joint according to the third embodiment will be described with reference to FIGS. 10 to 14. The same components as those shown in the above embodiment are designated by the same reference numerals, and the duplicated description will be omitted.

図１０に示されるように、本実施例の押輪３０３は、挿口部１ａが挿通される挿通孔３３０を有し、挿通孔３３０の内周部には、係止部材６を収容可能な収容溝部３１０が周方向に離間して複数形成されている（本実施例では４つ）。収容溝部３１０は、係止部材６の基部６０を収容する収容部３３０ｂと、係止部材６の鍔部７を収容する溝部３３０ｇとから構成されている。 As shown in FIG. 10, the push ring 303 of this embodiment has an insertion hole 330 into which the insertion opening 1a is inserted, and the inner periphery of the insertion hole 330 accommodates the locking member 6 therein. A plurality of groove portions 310 are formed so as to be separated in the circumferential direction (four in this embodiment). The housing groove portion 310 includes a housing portion 330b that houses the base portion 60 of the locking member 6, and a groove portion 330g that houses the collar portion 7 of the locking member 6.

また、押輪３の先端部には、嵌合凹部３３０ａと、後述の押え部材３５１を保持するための複数の凸部３０２と、が形成されている。複数の凸部３０２は、所定間隔離間して正面視略環状を成すように配設されている。また押輪３の後端部には、小径部３３０ｄが形成されている。 Further, a fitting concave portion 330a and a plurality of convex portions 302 for holding a pressing member 351 which will be described later are formed at the tip of the push wheel 3. The plurality of convex portions 302 are arranged so as to be separated from each other by a predetermined distance so as to form a substantially annular shape in a front view. A small diameter portion 330d is formed at the rear end of the push wheel 3.

収容部３３０ｂには、収容部３３０ｂから小径部３３０ｄに向けて漸次縮径するテーパ面３３０ｅと、テーパ面３３０ｅにおける小径部３３０ｄ側の端部から内径方向に立ち上がる奥端面３３０ｆと、を備えている。 The accommodating portion 330b includes a tapered surface 330e that gradually decreases in diameter from the accommodating portion 330b toward the small diameter portion 330d, and an inner end surface 330f that rises in the inner diameter direction from the end portion of the tapered surface 330e on the small diameter portion 330d side. ..

図１１に示されるように、本実施例に用いられるパッキン４を密封状態で保持する保持部材としての押え部材３５１は、合成樹脂製の平板材により環状に形成されている。この押え部材３５１の外周縁には、所定間隔を置いて４つの切欠き部３５５，３５５，…が形成されている。また、押え部材３５１の後端側の端面には、内径方向に向けて縮径するように傾斜するテーパ面３５２ａを有しており、押え部材３５１の先端側の端面は、軸方向に直交する平坦面３５２ｂとなっている。 As shown in FIG. 11, a holding member 351 as a holding member for holding the packing 4 used in the present embodiment in a sealed state is formed in an annular shape by a flat plate material made of synthetic resin. Four cutouts 355, 355,... Are formed at predetermined intervals on the outer peripheral edge of the pressing member 351. Further, the end surface on the rear end side of the pressing member 351 has a taper surface 352a inclined so as to reduce the diameter toward the inner diameter direction, and the end surface on the front end side of the pressing member 351 is orthogonal to the axial direction. It is a flat surface 352b.

図１２（ａ）に示されるように、各収容溝部３１０には、係止部材６がそれぞれ収容される。収容溝部３１０に係止部材６を収容した際には、収容溝部３１０における周方向の端部と係止部材６における周方向の端部との間に、弾性を有する部材から成る弾性部材３０４が配設される。この弾性部材３０４により収容溝部３１０での係止部材６の位置を保持させることで移動防止できるため、作業性が向上する。 As shown in FIG. 12A, the locking member 6 is housed in each housing groove portion 310. When the locking member 6 is housed in the housing groove portion 310, the elastic member 304 made of a member having elasticity is provided between the circumferential end portion of the housing groove portion 310 and the circumferential end portion of the locking member 6. It is arranged. Since the elastic member 304 can prevent the movement by holding the position of the locking member 6 in the accommodation groove portion 310, workability is improved.

図１２（ｂ）に示されるように、押え部材３５１は、切欠き部３５５，３５５，…を各収容溝部３１０に収容された係止部材６の鍔部７に合わせた状態で嵌合凹部３３０ａに配置される。これによれば、切欠き部３５５，３５５，…が鍔部７に当接することで押え部材３５１が周方向にずれることが規制される。また、押え部材３５１を嵌合凹部３３０ａに配置した際には、押え部材３５１の外周面が凸部３０２，３０２，…の内側に配置されることとなり、これにより押え部材３５１が径方向にずれることを防止できる。 As shown in FIG. 12( b ), the pressing member 351 has the fitting recessed portion 330 a with the cutout portions 355, 355,... Aligned with the flange portion 7 of the locking member 6 accommodated in each accommodation groove portion 310. Is located in. According to this, the notch portions 355, 355,... Abut on the flange portion 7 to prevent the pressing member 351 from shifting in the circumferential direction. Further, when the pressing member 351 is arranged in the fitting concave portion 330a, the outer peripheral surface of the pressing member 351 is arranged inside the convex portions 302, 302,..., As a result, the pressing member 351 is displaced in the radial direction. Can be prevented.

挿口管１と受口管２とを接続する際には、前記実施例と同様に、図１３（ａ）に示されるように、係止部材６，６，…及び押え部材３５１を取付けた押輪３０３とパッキン４とを挿口部１ａに外嵌させ、挿口部１ａを受口部２０の開口近傍に配置する。 At the time of connecting the mouthpiece tube 1 and the mouthpiece tube 2, the locking members 6, 6,... And the pressing member 351 were attached as shown in FIG. The push wheel 303 and the packing 4 are externally fitted to the insertion opening 1 a, and the insertion opening 1 a is arranged near the opening of the receiving opening 20.

次いで、図１３（ｂ）に示されるように、挿口部１ａを受口部２０に所定距離挿入し、押輪３０３を受口部２０に近接するように軸方向に移動すると、鍔部７が受口部２０の開口側端面２０ｄに当接し、係止部材６の受口部２０方向への移動が規制される。 Next, as shown in FIG. 13B, when the insertion portion 1a is inserted into the receiving portion 20 by a predetermined distance and the push ring 303 is moved in the axial direction so as to be close to the receiving portion 20, the collar portion 7 is removed. The contact with the opening-side end surface 20d of the receiving portion 20 restricts the movement of the locking member 6 toward the receiving portion 20.

次に、図１４（ａ）に示されるように、Ｔ頭ボルト８０とナット８５とを締め付けることで、押輪３０３を受口部２０側に更に移動させる。これにより、押え部材３５１がパッキン４を受口部２０側に押圧するように移動するとともに、収容溝部３１０のテーパ面３３０ｅと係止部材６の第１テーパ面６２との摺動により係止部材６の爪部６１，６１，…が挿口部１ａの外周面１ｂに食い込むようになる。また、押え部材３５１が押輪３０３と受口部２０の開口側端面２０ｄとで挟持されるようになるため、パッキン４による挿口部１ａと受口部２０との密封状態が保持される。 Next, as shown in FIG. 14A, the T-head bolt 80 and the nut 85 are tightened to further move the push ring 303 to the receptacle portion 20 side. As a result, the pressing member 351 moves so as to press the packing 4 toward the receiving portion 20 side, and the locking member is caused by sliding between the tapered surface 330e of the housing groove portion 310 and the first tapered surface 62 of the locking member 6. 6 come to bite into the outer peripheral surface 1b of the insertion opening 1a. Further, since the pressing member 351 is sandwiched between the push wheel 303 and the opening-side end surface 20d of the receiving portion 20, the sealed state between the insertion portion 1a and the receiving portion 20 by the packing 4 is maintained.

係止部材６及び鍔部７は、収容溝部３１０に収容されているため、係止部材６の受口部２０方向への移動が規制された状態で押輪３０３を受口部２０側に移動させた際には、収容溝部３１０に案内されることで好適に爪部６１，６１，…が挿口部１ａの外周面１ｂに食い込むようになる。また、係止部材６の収容溝部３１０での位置を保持する弾性部材３０４は、弾性変形可能であるため、係止部材６と収容溝部３１０との相対的に近接移動を阻害することを抑制できる。 Since the locking member 6 and the flange portion 7 are housed in the housing groove portion 310, the push wheel 303 is moved to the receiving port 20 side while the movement of the locking member 6 toward the receiving port 20 is restricted. In this case, the claw portions 61, 61,... Are suitably bited into the outer peripheral surface 1b of the insertion opening portion 1a by being guided by the accommodation groove portion 310. Further, since the elastic member 304 that holds the position of the locking member 6 in the housing groove portion 310 is elastically deformable, it is possible to suppress the relative close movement of the locking member 6 and the housing groove portion 310 from being obstructed. ..

そして、図１４（ｂ）に示されるように、挿口部１ａを受口部２０から離脱する方向に地震等の不測の外力が作用した場合、この外力により、係止部材６をさらに挿口部１ａの外周面１ｂにさらに食い込ませることで楔効果と傾動効果を発揮し、挿口管１と受口管２との離脱を防止する。 Then, as shown in FIG. 14B, when an unexpected external force such as an earthquake acts in a direction in which the insertion opening 1a is separated from the receiving opening 20, the locking member 6 is further inserted through the external force. By further digging into the outer peripheral surface 1b of the portion 1a, a wedge effect and a tilting effect are exhibited, and the detachment of the insertion tube 1 and the receiving tube 2 is prevented.

次に、実施例４に係る離脱防止装置及び管継手につき、図１５〜図１７を参照して説明する。尚、前記実施例に示される構成部分と同一構成部分については同一符号を付して重複する説明を省略する。 Next, the separation prevention device and the pipe joint according to the fourth embodiment will be described with reference to FIGS. The same components as those shown in the above embodiment are designated by the same reference numerals, and the duplicated description will be omitted.

図１５に示されるように、本実施例に用いられる押輪４０３は、切欠き溝４０４の構成以外実施例１の押輪３と略同一構成となっている。押輪４０３は、先端側の端部における溝部３０ｇ，３０ｇ，…の外径側に切欠き溝４０４，４０４，…が形成されている。 As shown in FIG. 15, the push wheel 403 used in the present embodiment has substantially the same configuration as the push wheel 3 of the first embodiment except the configuration of the cutout groove 404. The push ring 403 has notch grooves 404, 404,... Formed on the outer diameter side of the groove portions 30g, 30g,.

挿口管１と受口管２とを接続する際には、図１６（ａ）に示されるように、フォルダユニット５（係止部材６’，６’，…、第１フォルダ部材５１及び第２フォルダ部材５６）を取付けた押輪４０３とパッキン４’とを挿口管１の挿口部１ａに外嵌させ、挿口部１ａを受口部２０の開口近傍に配置する。 When connecting the mouthpiece tube 1 and the mouthpiece tube 2, as shown in FIG. 16A, a folder unit 5 (locking members 6′, 6′,..., First folder member 51 and The push ring 403 to which the 2 folder member 56) is attached and the packing 4′ are externally fitted to the insertion opening 1a of the insertion tube 1, and the insertion opening 1a is arranged in the vicinity of the opening of the receiving opening 20.

尚、本実施例で用いられるパッキン４’は、その底部４ｃ’側端部（受口部２０と反対側の端部）の内周側に切欠段部４ｄが形成されている。底部４ｃ’には、その内周縁である切欠段部４ｄと底部４ｃ’の外周縁とに亘って形成される環状のパッキン保持体１３が固着されている。さらに尚、本実施例で用いられる係止部材６’は、パッキン保持体１３の外周面よりも外径側に位置するように鍔部７’が形成されている。 The packing 4'used in this embodiment has a notch step 4d formed on the inner peripheral side of the bottom 4c' side end (the end opposite to the receptacle 20). An annular packing holder 13 is fixed to the bottom portion 4c', which is formed over the notch step 4d which is the inner peripheral edge thereof and the outer peripheral edge of the bottom portion 4c'. Furthermore, the locking member 6'used in the present embodiment is formed with a collar portion 7'so as to be located on the outer diameter side of the outer peripheral surface of the packing holder 13.

次いで、図１６（ｂ）に示されるように、挿口部１ａを受口部２０に所定距離挿入し、押輪４０３を受口部２０に近接するように軸方向に移動すると、鍔部７’が受口部２０の開口側端面２０ｄに当接し、係止部材６’の受口部２０方向への移動が規制される。 Next, as shown in FIG. 16(b), when the insertion opening 1a is inserted into the receiving opening 20 by a predetermined distance and the push ring 403 is moved in the axial direction so as to be close to the receiving opening 20, the flange 7' Comes into contact with the opening-side end surface 20d of the receiving portion 20, and the movement of the locking member 6′ toward the receiving portion 20 is restricted.

次に、図１７（ａ）に示されるように、Ｔ頭ボルト８０とナット８５とを締め付けることで、押輪４０３を受口部２０側に移動させる。これにより、第１フォルダ部材５１がパッキン保持体１３及びパッキン４を受口部２０側に押圧するように移動するとともに、押輪３のテーパ面３３ｅと係止部材６’の第１テーパ面６２との摺動により係止部材６’の爪部６１，６１，…が挿口部１ａの外周面１ｂに食い込むようになる。 Next, as shown in FIG. 17A, the T-head bolt 80 and the nut 85 are tightened to move the push ring 403 to the receiving portion 20 side. As a result, the first folder member 51 moves so as to press the packing holding body 13 and the packing 4 toward the receiving portion 20 side, and the taper surface 33e of the push wheel 3 and the first taper surface 62 of the locking member 6′ are moved. .. of the locking member 6′ bite into the outer peripheral surface 1b of the insertion opening 1a.

また、押輪４０３は、前述した切欠き溝４０４が設けられていることにより、押輪４０３と受口部２０との近接移動が鍔部７’により阻害されない。これにより第１フォルダ部材５１は、押輪４０３と受口部２０の開口側端面２０ｄとで挟持されるようになるため、パッキン４’による挿口部１ａと受口部２０との密封状態が保持される。 Further, since the push wheel 403 is provided with the above-described cutout groove 404, the flange portion 7 ′ does not hinder the close movement of the push wheel 403 and the receiving portion 20. As a result, the first folder member 51 is sandwiched between the push ring 403 and the opening-side end surface 20d of the receiving portion 20, so that the sealed state between the insertion portion 1a and the receiving portion 20 by the packing 4'is maintained. To be done.

そして、図１７（ｂ）に示されるように、挿口部１ａを受口部２０から離脱する方向に地震等の不測の外力が作用した場合、この外力により、係止部材６’をさらに挿口部１ａの外周面１ｂにさらに食い込ませることで楔効果と傾動効果を発揮し、挿口管１と受口管２との離脱を防止する。 Then, as shown in FIG. 17( b ), when an unexpected external force such as an earthquake acts in the direction of separating the insertion opening 1 a from the receiving opening 20, the locking member 6 ′ is further inserted by this external force. By further digging into the outer peripheral surface 1b of the mouth portion 1a, a wedge effect and a tilting effect are exhibited, and the detachment of the insertion tube 1 and the receiving tube 2 is prevented.

次に、実施例５に係る離脱防止装置及び管継手につき、図１８〜図２１を参照して説明する。尚、前記実施例に示される構成部分と同一構成部分については同一符号を付して重複する説明を省略する。 Next, a separation prevention device and a pipe joint according to the fifth embodiment will be described with reference to FIGS. The same components as those shown in the above embodiment are designated by the same reference numerals, and the duplicated description will be omitted.

図１８に示されるように、本実施例に用いられる押輪５０３は、切欠き溝５０４の構成以外実施例３の押輪３０３と略同一構成となっている。押輪５０３は、先端側の端部における溝部３３０ｇ，３３０ｇ，…の外径側に切欠き溝５０４，５０４，…が形成されている。 As shown in FIG. 18, the push ring 503 used in the present embodiment has substantially the same configuration as the push ring 303 of the third embodiment except the configuration of the cutout groove 504. The push ring 503 has notch grooves 504, 504,... Formed on the outer diameter side of the groove portions 330g, 330g,...

図１９に示されるように、本実施例に用いられるパッキン４を密封状態で保持する保持部材としての押え部材５５１は、合成樹脂製の平板材により環状に形成されている。この押え部材５５１の外周縁には、所定間隔を置いて４つの切欠き部５５５，５５５，…が形成されている。また、押え部材５５１の先端面及び後端面は平坦な面となっている。 As shown in FIG. 19, a holding member 551 as a holding member for holding the packing 4 used in this embodiment in a sealed state is formed in an annular shape by a flat plate material made of synthetic resin. Four notches 555, 555,... Are formed at a predetermined interval on the outer peripheral edge of the pressing member 551. Further, the front end surface and the rear end surface of the pressing member 551 are flat surfaces.

押え部材５５１における切欠き部５５５，５５５，…の近傍には、断面視Ｌ字状のスペーサ７０（介設体）が配設されている。このスペーサ７０は、押え部材５５１の後端部に配設される略円弧上の第１板部７１と、第１板部７１の周方向略中央部における外周縁から先端側（受口部２０側）に延びる第２板部７２と、から構成される。本変形例では、スペーサ７０は、第２板部７２が押え部材５５１の後端部に接着力の弱い接着層（図示せず）により仮貼着されている。尚、スペーサ７０は、押え部材５５１から分離可能であればよく、必ずしも押え部材５５１に貼着されていなくともよい。 In the vicinity of the cutouts 555, 555,... In the pressing member 551, a spacer 70 (intermediate body) having an L-shaped cross section is arranged. The spacer 70 has a substantially arc-shaped first plate portion 71 arranged at the rear end portion of the pressing member 551 and an outer peripheral edge of the first plate portion 71 at a substantially central portion in the circumferential direction from the tip side (the receiving portion 20). And a second plate portion 72 extending to the side). In this modification, the second plate portion 72 of the spacer 70 is temporarily attached to the rear end portion of the pressing member 551 with an adhesive layer (not shown) having a weak adhesive force. The spacer 70 may be separated from the pressing member 551 and may not necessarily be attached to the pressing member 551.

挿口管１と受口管２とを接続する際には、前記実施例と同様に、図２０（ａ）に示されるように、係止部材５６０，５６０，…及び押え部材５５１を取付けた押輪５０３とパッキン４’とを挿口部１ａに外嵌させ、挿口部１ａを受口部２０の開口近傍に配置する。尚、本実施例で用いられる係止部材５６０は、鍔部に代えてスペーサ７０が構成されていること以外、前記実施例と略同一構成となっている。 When connecting the mouthpiece tube 1 and the mouthpiece tube 2, locking members 560, 560,... And a holding member 551 were attached as shown in FIG. The push wheel 503 and the packing 4 ′ are externally fitted to the insertion opening 1 a, and the insertion opening 1 a is arranged near the opening of the receiving opening 20. The locking member 560 used in this embodiment has substantially the same structure as that of the above embodiment except that the spacer 70 is formed instead of the flange portion.

次いで、図２０（ｂ）に示されるように、挿口部１ａを受口部２０に所定距離挿入し、押輪５０３を受口部２０に近接するように軸方向に移動すると、スペーサ７０の第２板部７２が受口部２０の開口側端面２０ｄに当接し、これに伴い係止部材５６０の受口部２０方向への移動が規制される。 Next, as shown in FIG. 20B, when the insertion opening 1a is inserted into the receiving opening 20 by a predetermined distance and the push wheel 503 is moved in the axial direction so as to be close to the receiving opening 20, the spacer 70 is moved to the first position. The two plate portion 72 abuts on the opening-side end surface 20d of the receiving portion 20, and accordingly, the movement of the locking member 560 toward the receiving portion 20 is restricted.

次に、図２１（ａ）に示されるように、Ｔ頭ボルト８０とナット８５とを締め付けることで、押輪５０３を受口部２０側に移動させる。これにより、押え部材５５１がスペーサ７０の第１板部７１から剥離されてパッキン保持体１３及びパッキン４’を受口部２０側に押圧するように移動するとともに、押輪５０３のテーパ面３３０ｅと係止部材５６０の第１テーパ面６２との摺動により係止部材５６０の爪部６１，６１，…が挿口部１ａの外周面１ｂに食い込むようになる。 Next, as shown in FIG. 21A, the T-head bolt 80 and the nut 85 are tightened to move the push ring 503 to the receiving portion 20 side. As a result, the pressing member 551 is separated from the first plate portion 71 of the spacer 70 and moves so as to press the packing holding body 13 and the packing 4 ′ toward the receiving portion 20 side, and also engages with the tapered surface 330 e of the pressing wheel 503. By the sliding of the stopper member 560 with the first tapered surface 62, the claw portions 61, 61,... Of the locking member 560 bite into the outer peripheral surface 1b of the insertion portion 1a.

また、押輪５０３は、前述した切欠き溝５０４が設けられていることにより、押輪５０３と受口部２０との近接移動がスペーサ７０により阻害されない。これにより押え部材５５１は、押輪５０３と受口部２０の開口側端面２０ｄとで挟持されるようになるため、パッキン４’による挿口部１ａと受口部２０との密封状態が保持される。 Further, since the push wheel 503 is provided with the above-mentioned notch groove 504, the spacer 70 does not hinder the close movement of the push wheel 503 and the receptacle 20. As a result, the pressing member 551 is sandwiched between the push wheel 503 and the opening-side end surface 20d of the receiving portion 20, so that the sealed state between the insertion portion 1a and the receiving portion 20 by the packing 4'is maintained. ..

そして、図２１（ｂ）に示されるように、挿口部１ａを受口部２０から離脱する方向に地震等の不測の外力が作用した場合、この外力により、係止部材５６０をさらに挿口部１ａの外周面１ｂにさらに食い込ませることで楔効果と傾動効果を発揮し、挿口管１と受口管２との離脱を防止する。 Then, as shown in FIG. 21B, when an unexpected external force such as an earthquake acts in a direction in which the insertion opening 1a is separated from the receiving opening 20, the locking member 560 is further inserted by the external force. By further digging into the outer peripheral surface 1b of the portion 1a, a wedge effect and a tilting effect are exhibited, and the detachment of the insertion tube 1 and the receiving tube 2 is prevented.

このように、スペーサ７０は、係止部材５６０と別体に形成されているため、挿口管１と受口管２とに離脱方向の外力が作用した際に、係止部材５６０を単独で押輪５０３に近接するように移動する。すなわち、挿口管１と受口管２とに離脱方向の外力が作用した際に、係止部材５６０が傾いたとしても、係止部材５６０の押輪５０３への近接移動がスペーサ７０により阻害されることを防止できる。 In this way, since the spacer 70 is formed separately from the locking member 560, when the external force in the detaching direction acts on the insertion tube 1 and the receiving tube 2, the locking member 560 alone is used. It moves so as to approach the push wheel 503. That is, even when the locking member 560 is tilted when an external force in the detaching direction is applied to the insertion tube 1 and the receiving tube 2, the spacer 70 hinders the proximity movement of the locking member 560 to the push ring 503. Can be prevented.

次に、実施例６に係る離脱防止装置及び管継手につき、図２２〜図２４を参照して説明する。尚、前記実施例に示される構成部分と同一構成部分については同一符号を付して重複する説明を省略する。 Next, a separation prevention device and a pipe joint according to the sixth embodiment will be described with reference to FIGS. The same components as those shown in the above embodiment are designated by the same reference numerals, and the duplicated description will be omitted.

本実施例に用いられる押輪４０３は、前記実施例４と略同一構成となっている。また、図２２に示されるように、第１フォルダ部材５１の切欠き部５５，５５，…には、スペーサ７０’，７０’，…が取付けられている。詳しくは、スペーサ７０’は、切欠き部５５に嵌合する第１板部７１’と、第１板部７１’の外周縁から先端側（受口部２０側）に延びる第２板部７２’と、から構成されている。 The push ring 403 used in this embodiment has substantially the same structure as that in the fourth embodiment. Further, as shown in FIG. 22, spacers 70', 70',... Are attached to the cutout portions 55, 55,... Of the first folder member 51. Specifically, the spacer 70 ′ includes a first plate portion 71 ′ that fits into the cutout portion 55, and a second plate portion 72 that extends from the outer peripheral edge of the first plate portion 71 ′ to the tip side (receptacle portion 20 side). ', and consists of.

挿口管１と受口管２とを接続する際には、前記実施例と同様に、図２３（ａ）に示されるように、係止部材６６０，６６０，…、第１フォルダ部材５１及び第２フォルダ部材５６を取付けた押輪４０３とパッキン４’とを挿口部１ａに外嵌させ、挿口部１ａを受口部２０の開口近傍に配置する。尚、本実施例で用いられる係止部材６６０は、スペーサ７０’の第２板部７２’が嵌合される嵌合部６６０ａ以外、前記実施例５の係止部材６６０と略同一構成となっている。 When connecting the mouthpiece tube 1 and the mouthpiece tube 2, as shown in FIG. 23A, the locking members 660, 660,..., First folder member 51 and The push wheel 403 to which the second folder member 56 is attached and the packing 4′ are externally fitted to the insertion opening 1a, and the insertion opening 1a is arranged near the opening of the receiving opening 20. The locking member 660 used in this embodiment has substantially the same configuration as the locking member 660 of the fifth embodiment except for the fitting portion 660a into which the second plate portion 72' of the spacer 70' is fitted. ing.

次いで、図２３（ｂ）に示されるように、挿口部１ａを受口部２０に所定距離挿入し、押輪４０３を受口部２０に近接するように軸方向に移動すると、スペーサ７０’の第２板部７２’が受口部２０の開口側端面２０ｄに当接し、これに伴い係止部材６６０の受口部２０方向への移動が規制される。このとき、スペーサ７０’の第２板部７２’は、係止部材６６０の嵌合部６６０ａに嵌合されているため、係止部材６６０の受口部２０方向への移動を安定して規制できる。 Then, as shown in FIG. 23(b), when the insertion opening 1a is inserted into the receiving opening 20 for a predetermined distance and the push ring 403 is moved in the axial direction so as to be close to the receiving opening 20, the spacer 70' The second plate portion 72' comes into contact with the opening-side end surface 20d of the receiving portion 20, and accordingly, the movement of the locking member 660 toward the receiving portion 20 is restricted. At this time, since the second plate portion 72′ of the spacer 70′ is fitted to the fitting portion 660a of the locking member 660, the movement of the locking member 660 toward the receiving portion 20 is stably regulated. it can.

次に、図２４（ａ）に示されるように、Ｔ頭ボルト８０とナット８５とを締め付けることで、押輪４０３を受口部２０側に移動させる。これにより、第１フォルダ部材５１がスペーサ７０’の第１板部７１’から剥離されてパッキン保持体１３及びパッキン４’を受口部２０側に押圧するように移動するとともに、押輪４０３のテーパ面３３ｅと係止部材６６０の第１テーパ面６２との摺動により係止部材６６０の爪部６１，６１，…が挿口部１ａの外周面１ｂに食い込むようになる。 Next, as shown in FIG. 24A, the T-head bolt 80 and the nut 85 are tightened to move the push ring 403 to the receptacle 20 side. As a result, the first folder member 51 is separated from the first plate portion 71′ of the spacer 70′ and moves so as to press the packing holding body 13 and the packing 4′ toward the receiving port 20 side, and the taper of the push wheel 403. By the sliding of the surface 33e and the first tapered surface 62 of the locking member 660, the claw portions 61, 61,... Of the locking member 660 come to bite into the outer peripheral surface 1b of the insertion opening 1a.

また、押輪４０３は、前述した切欠き溝４０４が設けられていることにより、押輪４０３と受口部２０との近接移動がスペーサ７０’により阻害されない。これにより第１フォルダ部材５１は、押輪４０３と受口部２０の開口側端面２０ｄとで挟持されるようになるため、パッキン４’による挿口部１ａと受口部２０との密封状態が保持される。 Further, the push wheel 403 is provided with the above-mentioned notch groove 404, so that the spacer 70 ′ does not hinder the close movement between the push wheel 403 and the receptacle 20. As a result, the first folder member 51 is sandwiched between the push ring 403 and the opening-side end surface 20d of the receiving portion 20, so that the sealed state between the insertion portion 1a and the receiving portion 20 by the packing 4'is maintained. To be done.

そして、図２４（ｂ）に示されるように、挿口部１ａを受口部２０から離脱する方向に地震等の不測の外力が作用した場合、この外力により、係止部材６６０をさらに挿口部１ａの外周面１ｂにさらに食い込ませることで楔効果と傾動効果を発揮し、挿口管１と受口管２との離脱を防止する。 Then, as shown in FIG. 24( b ), when an unexpected external force such as an earthquake acts in the direction in which the insertion opening 1 a is detached from the receiving opening 20, the locking member 660 is further inserted by this external force. By further digging into the outer peripheral surface 1b of the portion 1a, a wedge effect and a tilting effect are exhibited, and the detachment of the insertion tube 1 and the receiving tube 2 is prevented.

以上、本発明の実施例を図面により説明してきたが、具体的な構成はこれら実施例に限られるものではなく、本発明の要旨を逸脱しない範囲における変更や追加があっても本発明に含まれる。 Although the embodiments of the present invention have been described above with reference to the drawings, the specific configurations are not limited to these embodiments, and modifications and additions within the scope not departing from the gist of the present invention are included in the present invention. Be done.

例えば、本発明の一方及び他方の流路構成部材は、端部に受口部及び挿口部を有し流路を構成する部材であれば、必ずしも管に限らず、例えば内部に弁体を備えた弁筐体などであってもよい。 For example, the one and the other flow path constituent members of the present invention are not necessarily pipes as long as they are members that form a flow path having a receiving portion and an insertion portion at the end, and for example, a valve body inside It may be a provided valve housing or the like.

また例えば、本実施例の押輪は、一体に形成されるものであるが、これに限らず分割構造としてもよい。 Further, for example, the push ring of the present embodiment is integrally formed, but the present invention is not limited to this and may have a divided structure.

１ 挿口管（他方の流路構成部材）
１ａ 挿口部
２ 受口管（一方の流路構成部材）
３ 押輪（本体部材）
４，４’ パッキン（シール部材）
６，６’ 係止部材
７，７’ 鍔部（介設体）
１０ 管継手
１１ 離脱防止装置
２０ 受口部
２０ｄ 開口側端面（受口部の端部）
３０ 挿通孔（本体部材の内周部）
３０ｇ 溝部（案内部）
３３ｅ テーパ面
５１ 第１フォルダ部材（保持部材）
５６ 第２フォルダ部材
６１ 爪部
６２ 第１テーパ面
７０，７０’ スペーサ（介設体）
２５０ フォルダ
２５１ 第１フォルダ部（保持部材）
２５６ 第２フォルダ部
３０３ 押輪（本体部材）
３１０ 収容溝部（本体部材の内周部）
３３０ｅ テーパ面
３５１ 押え部材（保持部材）
４０３ 押輪（本体部材）
５０３ 押輪（本体部材）
５５１ 押え部材（保持部材）
５６０ 係止部材
６６０ 係止部材 1 Inlet tube (other flow path component)
1a Insertion part 2 Receiving pipe (one flow path constituent member)
3 Push wheel (main body member)
4,4' packing (seal member)
6,6' Locking member 7,7' Collar part (intermediate body)
10 Pipe Joint 11 Detachment Prevention Device 20 Receiving Portion 20d Open End Face (End of Receiving Portion)
30 insertion hole (inner peripheral part of main body member)
30g groove (guide)
33e Tapered surface 51 First folder member (holding member)
56 second folder member 61 claw portion 62 first tapered surface 70, 70' spacer (intermediate body)
250 folder 251 first folder part (holding member)
256 Second folder portion 303 Push ring (main body member)
310 Storage Groove (Inner Perimeter of Main Body Member)
330e Tapered surface 351 Holding member (holding member)
403 Push wheel (main body member)
503 Push wheel (main body member)
551 Pressing member (holding member)
560 locking member 660 locking member

Claims (5)

一方の流路構成部材の受口部にリング状のシール部材を介して他方の流路構成部材の挿口部を挿入し、密封状に接続される接続箇所に設けられ、前記流路構成部材同士の離脱を防止する離脱防止装置であって、
前記挿口部の外周面に外嵌され、前記外周面に対向する内周部を有する本体部材と、前記本体部材の内周部に収容され、前記本体部材により内径方向に押圧されることで前記挿口部の外周面に係止される係止部材と、前記係止部材及び前記シール部材の間に設けられ、前記シール部材を密封状態で保持する保持部材と、を少なくとも備え、
前記係止部材と、前記シール部材及び前記保持部材よりも外径側の前記受口部の端部との間に、前記係止部材の軸方向の進入を規制する介設体が前記係止部材と一体に形成されていることを特徴とする離脱防止装置。 The flow path forming member is provided at a connection point where the insertion opening of the other flow path forming member is inserted into the receiving part of the one flow path forming member via a ring-shaped seal member and is hermetically connected. A separation prevention device for preventing separation from each other,
By being externally fitted to the outer peripheral surface of the insertion opening and having a main body member having an inner peripheral portion facing the outer peripheral surface, and being housed in the inner peripheral portion of the main body member and being pressed in the inner diameter direction by the main body member. At least a locking member that is locked to the outer peripheral surface of the insertion opening, and a holding member that is provided between the locking member and the sealing member and that holds the sealing member in a sealed state,
And said locking member, said seal member and between the end portion of the socket portion of the outer diameter side than the holding member, the locking through設体is to regulate the entry of the axial direction of the locking member A detachment prevention device characterized by being formed integrally with a member . 前記係止部材を挟んだ前記保持部材の反対側に、該保持部材とともにフォルダユニットを構成する第２フォルダ部材が配置されていることを特徴とする請求項１に記載の離脱防止装置。 The separation preventing device according to claim 1 , wherein a second folder member that constitutes a folder unit together with the holding member is arranged on the opposite side of the holding member sandwiching the locking member . 前記係止部材は複数設けられていることを特徴とする請求項１または２に記載の離脱防止装置。 The detachment prevention device according to claim 1 or 2, wherein a plurality of the locking members are provided . 前記介設体は、前記係止部材の周方向の略中央部に形成されていることを特徴とする請求項１ないし３のいずれかに記載の離脱防止装置。 The separation prevention device according to claim 1, wherein the interposition body is formed at a substantially central portion of the locking member in the circumferential direction. 前記一方の流路構成部材である受口管と、前記他方の流路構成部材である挿口管と、前記シール部材と、請求項１ないし４のいずれかに記載の前記離脱防止装置と、を有することを特徴とする管継手。 The receiving pipe which is the one flow path forming member, the insertion pipe which is the other flow path forming member, the sealing member, and the separation prevention device according to any one of claims 1 to 4, A pipe joint characterized by having.
JP2016172742A 2016-09-05 2016-09-05 Detachment prevention device and pipe joint equipped with this device Active JP6730139B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2016172742A JP6730139B2 (en) 2016-09-05 2016-09-05 Detachment prevention device and pipe joint equipped with this device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2016172742A JP6730139B2 (en) 2016-09-05 2016-09-05 Detachment prevention device and pipe joint equipped with this device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2020113752A Division JP6995165B2 (en) 2020-07-01 2020-07-01 Detachment prevention device and pipe fittings equipped with this device

Publications (2)

Publication Number Publication Date
JP2018040386A JP2018040386A (en) 2018-03-15
JP6730139B2 true JP6730139B2 (en) 2020-07-29

Family

ID=61625659

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2016172742A Active JP6730139B2 (en) 2016-09-05 2016-09-05 Detachment prevention device and pipe joint equipped with this device

Country Status (1)

Country Link
JP (1) JP6730139B2 (en)

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5222648Y2 (en) * 1972-07-07 1977-05-24
JPS60128087U (en) * 1984-02-08 1985-08-28 コスモ工機株式会社 Disengagement prevention device for fluid pipe joints
JP3016970U (en) * 1995-04-14 1995-10-17 前澤給装工業株式会社 Lock structure for pipe fittings
JP3821551B2 (en) * 1997-08-27 2006-09-13 株式会社水道技術開発機構 Detachment prevention device for pipe joints
JP4211877B2 (en) * 1998-05-13 2009-01-21 コスモ工機株式会社 Pipe fitting
JP4144675B2 (en) * 1998-05-13 2008-09-03 コスモ工機株式会社 Pipe fitting
JP4380851B2 (en) * 1999-09-10 2009-12-09 積水化学工業株式会社 Structure of pipe joint
JP3497158B1 (en) * 2002-07-10 2004-02-16 正文 南 Pipe connection device
JP4147555B2 (en) * 2003-10-08 2008-09-10 株式会社水道技術開発機構 Pipe fitting
JP5477844B2 (en) * 2009-07-03 2014-04-23 コスモ工機株式会社 Incore
JP5427697B2 (en) * 2010-06-08 2014-02-26 株式会社水道技術開発機構 Pipe fitting and assembly method of pipe fitting
JP6386227B2 (en) * 2013-12-25 2018-09-05 コスモ工機株式会社 Pipe fitting
JP6764668B2 (en) * 2016-03-28 2020-10-07 株式会社クボタ Pipe fittings and pipe joining methods
JP6735124B2 (en) * 2016-03-28 2020-08-05 株式会社クボタ Pipe fitting and separation prevention member
JP6735123B2 (en) * 2016-03-28 2020-08-05 株式会社クボタ Pipe joint and pipe joining method

Also Published As

Publication number Publication date
JP2018040386A (en) 2018-03-15

Similar Documents

Publication Publication Date Title
KR101429557B1 (en) Pipe joint
JP5427697B2 (en) Pipe fitting and assembly method of pipe fitting
JP2007078161A (en) Housing type pipe joint
JP2008025615A (en) Pipe joint
JP7253608B2 (en) Separation prevention device and pipe joint equipped with this device
JP6730139B2 (en) Detachment prevention device and pipe joint equipped with this device
JP6300609B2 (en) Detachment prevention device
JP4719176B2 (en) Pipe fitting
JP6995165B2 (en) Detachment prevention device and pipe fittings equipped with this device
JP7194008B2 (en) Detachment prevention device
JP5933288B2 (en) Pipe joint release prevention structure
JP6634271B2 (en) Fluid pipe separation prevention device and pipe joint
JP6378607B2 (en) Detachment prevention device
JPH0146755B2 (en)
US11098760B2 (en) Self-positioning screw joint
JP6466644B2 (en) Fluid pipe detachment prevention device
JP6490910B2 (en) Removal jig
JP2019002427A (en) Removal prevention device of fluid pipe
JP2001241581A (en) Pipe joint
JP5484767B2 (en) Movement prevention means
JP5914028B2 (en) Detachment prevention device
JP2017150595A (en) Pipe joint
JP2024009299A (en) Pipe joint detachment prevention structure
JP2013072450A (en) Separation preventing means
JP2023028137A (en) Detachment prevention device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20190425

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20200331

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20200331

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20200521

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20200616

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20200702

R150 Certificate of patent or registration of utility model

Ref document number: 6730139

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250