JPH08133329A - Cap for pipe end - Google Patents

Abstract

PURPOSE: To provide a cap for pipe end which can close either the insertion port or receiving port of a synthetic resin pipe, and at the same time, does not come off from a pipe end part without sufficient cause, during transport. CONSTITUTION: A cylindrical part 31 with a smaller diameter, which has an outer diameter to be elastically press-bonded to a rubber ring 2 being fitted on the inner peripheral surface of a receiving port 12 is provided on the depth side of a main body 30 being formed into a cylindrical shape with bottom. A cylindrical part 32 with a larger diameter is provided with a tilted step part 33, on the opening side of the cylindrical part 31 with a smaller diameter, and the inner peripheral surface of the cylindrical part 32 with a larger diameter is formed into approx. the same diameter as the outer peripheral surface of an insertion port 11. At the same time, the outer peripheral surface of the cylindrical part 32 with a larger diameter is formed in such a manner that it may become slightly smaller than the diameter of the inner peripheral surface at the tip of the receiving port 12. By this method, the cap can close either the insertion port or receiving port of a synthetic resin pipe, and does not come off from the pipe end without sufficient cause, during transport.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、管端部を閉塞して管内
に土砂等が侵入するのを防止できる管端キャップに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe end cap capable of blocking the pipe end to prevent dirt and sand from entering the pipe.

【０００２】[0002]

【従来の技術】従来から上下水道用の配管材として、図
２に断面図で示したような合成樹脂管１が使用されてい
る。この合成樹脂管１は、一端部を差口１１とし、他端
部を拡径して受口１２とすると共に該受口１２の内周面
に設けた環状溝１２０にゴムリング２を装着した構成か
らなっており、一方の合成樹脂管１の受口１２に他方の
合成樹脂管１の差口１１を挿入して順次接続するもので
ある。2. Description of the Related Art Conventionally, a synthetic resin pipe 1 as shown in a sectional view of FIG. 2 has been used as a pipe material for water and sewerage. In this synthetic resin pipe 1, one end is used as a spigot 11 and the other end is expanded to be a receiving port 12, and a rubber ring 2 is attached to an annular groove 120 provided on the inner peripheral surface of the receiving port 12. The synthetic resin pipe 1 has a structure in which the inlet 11 of the other synthetic resin pipe 1 is inserted into the receptacle 12 of the other synthetic resin pipe 1 to be sequentially connected.

【０００３】[0003]

【発明が解決しようとする課題】ところで、この合成樹
脂管を用いて配管施工を行なう場合、合成樹脂管を工場
で生産してから配管の施工現場に搬入するまでの間に土
砂や昆虫等が管内に侵入して管内流体を汚染することが
あった。そこで、合成樹脂管を工場から出荷する際に管
の両端部にキャップを装着して土砂や昆虫等が管に侵入
するのを防止していたが、従来の管端キャップは運搬中
に管端部から離脱し易いという問題があった。By the way, when the pipe construction is carried out by using this synthetic resin pipe, soil, insects, etc., may be generated between the production of the synthetic resin pipe at the factory and the delivery to the construction site of the pipe. It sometimes entered the pipe and contaminated the fluid in the pipe. Therefore, when shipping synthetic resin pipes from the factory, caps were attached to both ends of the pipes to prevent dirt, insects, etc. from entering the pipes. There was a problem that it was easy to leave the department.

【０００４】本発明は、かかる課題を解決したものであ
って、合成樹脂管の差口と、受口のいずれをも閉塞でき
ると共に、運搬中に妄りに管端部から離脱することのな
い管端キャップを提供するものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is possible to close both the inlet and the outlet of a synthetic resin pipe and prevent the pipe from being unintentionally detached from the pipe end during transportation. It provides an end cap.

【０００５】[0005]

【課題を解決するための手段】発明の管端キャップは、
一端部を差口とし、他端部を拡径して前記差口が挿入さ
れる受口とした合成樹脂管の両端を閉塞できるものであ
って、有底筒状をなす本体の奥側に前記受口の内周面に
装着したゴムリングと弾性的に圧接する外径を有する小
径筒部を設ける。そして、この小径筒部の開口側に傾斜
段部を介して大径筒部を設け、該大径筒部の内周面を前
記差口の外周面とほぼ同径に形成する。また、大径筒部
の外周面を前記受口の先端部内周面より若干小径となる
ように形成したことを特徴とする。The tube end cap of the invention comprises:
One end can be used as a spigot, and the other end can be expanded to have a diameter that can be closed at both ends of a synthetic resin pipe that is a receiving port into which the spigot is inserted. A small-diameter cylindrical portion having an outer diameter that is elastically pressed against a rubber ring mounted on the inner peripheral surface of the receiving opening is provided. A large-diameter cylindrical portion is provided on the opening side of the small-diameter cylindrical portion via an inclined step portion, and the inner peripheral surface of the large-diameter cylindrical portion is formed to have substantially the same diameter as the outer peripheral surface of the spigot. Further, it is characterized in that the outer peripheral surface of the large-diameter cylindrical portion is formed to have a diameter slightly smaller than the inner peripheral surface of the tip portion of the receiving port.

【０００６】[0006]

【作用】上記の構成からなるので、管端キャップを合成
樹脂管の差口に外挿すると、大径筒部の内周面が差口の
外周面と弾性的に圧接して差口端部が閉塞される。ま
た、管端キャップを合成樹脂管の受口に挿入すると、ゴ
ムリングが小径筒部の外周面と弾性的に圧接すると共
に、大径筒部が受口の先端部に嵌入して受口端部が閉塞
される。With the above construction, when the pipe end cap is externally inserted into the inlet of the synthetic resin pipe, the inner peripheral surface of the large-diameter tubular portion elastically presses against the outer peripheral surface of the outlet, and the outlet end is Is blocked. Also, when the pipe end cap is inserted into the receiving end of the synthetic resin pipe, the rubber ring elastically presses the outer peripheral surface of the small-diameter tubular part, and the large-diameter tubular part fits into the tip end of the receiving port, Part is blocked.

【０００７】[0007]

【実施例】以下、本発明の実施例を図面に基づいて詳細
に説明する。図１は本発明の一実施例を示す管端キャッ
プを用いて合成樹脂管の両端部を閉塞した状態を示す断
面図であって、図中の符号１は合成樹脂管、２はゴムリ
ング、３は管端キャップである。Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view showing a state in which both ends of a synthetic resin pipe are closed using a pipe end cap showing an embodiment of the present invention, in which reference numeral 1 is a synthetic resin pipe, 2 is a rubber ring, Reference numeral 3 is a pipe end cap.

【０００８】合成樹脂管１は塩化ビニル樹脂等の合成樹
脂を押出成形して得られたものであって、その一端部が
差口１１となっており、他端部に拡径した受口１２が設
けられている。拡径受口１２の内周面は前記差口１１の
外周面よりも若干大径に形成されており、拡径受口１２
の内周面に設けた環状溝１２０にはゴムリング２が装着
されている。この合成樹脂管１同志の接続は、図２に示
した様に一方の合成樹脂管１の受口１２に他方の合成樹
脂管１の差口１１を挿入すると、ゴムリング２を介して
管同志が伸縮自在に接続される。The synthetic resin pipe 1 is obtained by extruding a synthetic resin such as vinyl chloride resin, and has an opening 11 at one end and an expanded receiving end 12 at the other end. Is provided. The inner peripheral surface of the expanded diameter receiving port 12 is formed to have a slightly larger diameter than the outer peripheral surface of the above-mentioned opening 11, and the expanded diameter receiving port 12
The rubber ring 2 is attached to the annular groove 120 provided on the inner peripheral surface of the. As shown in FIG. 2, when the synthetic resin pipes 1 are connected to each other by inserting the socket 11 of the other synthetic resin pipe 1 into the socket 12 of the other synthetic resin pipe 1, the pipes are connected via the rubber ring 2. Is connected so that it can expand and contract.

【０００９】管端キャップ３は塩化ビニル樹脂等の合成
樹脂をインジェクションにより成形されるものであっ
て、有底筒状をなす本体３０の奥側には小径筒部３１を
設けられており、その外周面は前記受口１２の内周面に
装着されたゴムリング２と弾性的に圧接するような外径
に形成されている。尚、必要ならこの小径筒部３１の外
周面を開口側に向かって径が拡大する緩かなテーパ面に
形成してもよい。The tube end cap 3 is formed by injection molding a synthetic resin such as vinyl chloride resin, and has a small-diameter cylindrical portion 31 provided on the inner side of a bottomed cylindrical main body 30. The outer peripheral surface is formed with an outer diameter that elastically comes into pressure contact with the rubber ring 2 mounted on the inner peripheral surface of the receiving port 12. If necessary, the outer peripheral surface of the small-diameter cylindrical portion 31 may be formed as a gently tapered surface whose diameter increases toward the opening side.

【００１０】前記小径筒部３１の開口側には傾斜段部３
３を介して大径筒部３２が設けられている。大径筒部３
２の内周面は前記差口１１の外周面とほぼ同径に形成さ
れており、キャップ３を差口１１に外挿したとき大径筒
部３２の内周面と差口１１の外周面とが弾性的に圧接す
るように形成されている。また、大径筒部３２の外周面
は前記受口１２の先端部内周面より若干小径となるよう
に形成されており、その開口端にはラッパ状に拡開した
鍔３４が設けられている。合成樹脂管１の端部に装着し
たキャップ３を取り外すとき、前記鍔３４に手指を引っ
掛けて抜き出するだけで簡単にキャップ３を取り外すこ
とができる。An inclined step portion 3 is provided on the opening side of the small diameter cylindrical portion 31.
A large-diameter cylindrical portion 32 is provided via Large diameter tube 3
The inner peripheral surface of 2 is formed to have substantially the same diameter as the outer peripheral surface of the inlet 11, and when the cap 3 is fitted over the outlet 11, the inner peripheral surface of the large-diameter cylindrical portion 32 and the outer peripheral surface of the outlet 11 are formed. And are formed to be elastically pressed against each other. The outer peripheral surface of the large-diameter cylindrical portion 32 is formed so as to have a diameter slightly smaller than the inner peripheral surface of the tip end portion of the receiving port 12, and a flange 34 expanded in a trumpet shape is provided at the open end thereof. . When removing the cap 3 attached to the end portion of the synthetic resin pipe 1, the cap 3 can be easily removed only by hooking a finger on the collar 34 and pulling it out.

【００１１】この管端キャップ３は合成樹脂管１の差口
１１と、受口１２のいずれをも閉塞できるものであっ
て、差口１１の端部を閉塞する場合にはキャップ３を差
口１１に外挿する。すると、差口１１の先端部が傾斜段
部３３に当接すると共に、大径筒部３２の内周面と差口
１１の外周面とが弾性的に圧接して強固に装着される。
一方、受口１２の端部を閉塞する場合にはキャップ３を
受口１２に挿入し、受口１２の内周面に装着したゴムリ
ング２に傾斜段部３３が当接するまで押込む。すると、
小径筒部３１の外周面にゴムリング２が弾性的に圧接す
ると共に、大径筒部３３が受口の先端部に嵌入して強固
に装着される。このため、合成樹脂管１の運搬中に管端
部から妄りにキャップ３が離脱することがなく、配管施
工の際には鍔３４に手指を引っ掛けて抜き出するだけで
簡単にキャップ３を取り外すことができる。This pipe end cap 3 is capable of closing both the inlet 11 and the receiving port 12 of the synthetic resin pipe 1. When the end of the outlet 11 is closed, the cap 3 is attached. Extrapolate to 11. Then, the tip of the spigot 11 abuts on the inclined step portion 33, and the inner peripheral surface of the large-diameter cylindrical portion 32 and the outer peripheral surface of the spigot 11 are elastically pressed and firmly attached.
On the other hand, when closing the end of the receiving port 12, the cap 3 is inserted into the receiving port 12 and pushed in until the inclined step portion 33 contacts the rubber ring 2 mounted on the inner peripheral surface of the receiving port 12. Then
The rubber ring 2 is elastically pressed against the outer peripheral surface of the small-diameter cylindrical portion 31, and the large-diameter cylindrical portion 33 is fitted into the tip portion of the receiving port and firmly attached. For this reason, the cap 3 does not inadvertently come off from the pipe end during the transportation of the synthetic resin pipe 1, and the cap 3 can be easily removed simply by hooking the finger on the collar 34 and pulling it out at the time of piping construction. You can

【００１２】[0012]

【発明の効果】以上詳述した如く、本発明の管端キャッ
プは合成樹脂管の差口と、受口のいずれを閉塞する場合
にも使用できるので、品揃えが容易であるだけでなく、
管の径サイズに応じた一種類のキャップを準備するだけ
でよいので、管端部の閉塞作業が簡単に行なえる。ま
た、本発明の管端キャップは管端部に強固に装着される
ので、運搬中に管端部からキャップが妄りに離脱して管
内に土砂や昆虫等が侵入することもない。As described above in detail, since the pipe end cap of the present invention can be used for closing either the inlet or the outlet of the synthetic resin pipe, not only is the product lineup easy but also
Since it suffices to prepare only one type of cap according to the diameter size of the pipe, the work of closing the pipe end can be performed easily. Further, since the pipe end cap of the present invention is firmly attached to the pipe end, the cap does not accidentally detach from the pipe end during transportation and dirt, insects, etc. do not enter the pipe.

【図面の簡単な説明】[Brief description of drawings]

【図１】図１は本発明の一実施例を示す管端キャップを
用いて合成樹脂管の端部を閉塞した状態を示す断面図で
ある。FIG. 1 is a cross-sectional view showing a state in which an end portion of a synthetic resin pipe is closed using a pipe end cap showing an embodiment of the present invention.

【図２】図２は合成樹脂管の接続状態を示す断面図であ
る。FIG. 2 is a cross-sectional view showing a connected state of a synthetic resin pipe.

【符号の説明】[Explanation of symbols]

１ 合成樹脂管 １１ 差口 １２ 受口 ２ ゴムリング ３ 管端キャップ ３０ 本体 ３１ 小径筒部 ３２ 大径筒部 1 Synthetic Resin Pipe 11 Outlet 12 Receiving Port 2 Rubber Ring 3 Pipe End Cap 30 Main Body 31 Small Diameter Tube 32 Large Diameter Tube

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 一端部を差口（１１）とし、他端部を拡
径して前記差口（１１）が挿入される受口（１２）とし
た合成樹脂管（１）の両端を閉塞できる管端キャップで
あって、有底筒状をなす本体（３０）の奥側に前記受口
（１２）の内周面に装着したゴムリング（２）と弾性的
に圧接する外径を有する小径筒部（３１）を設けると共
に、該小径筒部（３１）の開口側に傾斜段部（３３）を
介して大径筒部（３２）を設け、該大径筒部（３２）の
内周面を前記差口（１１）の外周面とほぼ同径に形成す
ると共に、大径筒部（３２）の外周面を前記受口（１
２）の先端部内周面より若干小径となるように形成した
ことを特徴とする管端キャップ。1. A synthetic resin pipe (1) is closed at one end with a spigot (11) and at the other end with an expanded diameter to form a receiving port (12) into which the spigot (11) is inserted. A pipe end cap that can be formed, and has an outer diameter that elastically comes into pressure contact with a rubber ring (2) mounted on the inner peripheral surface of the receiving port (12) on the inner side of the main body (30) having a bottomed cylindrical shape. A small-diameter cylinder portion (31) is provided, and a large-diameter cylinder portion (32) is provided on the opening side of the small-diameter cylinder portion (31) via an inclined step portion (33). The outer peripheral surface of the large-diameter cylindrical portion (32) is formed to have the same diameter as the outer peripheral surface of the inlet (11), and the outer peripheral surface of the large-diameter cylindrical portion (32) is formed to the receiving port (1
A pipe end cap formed so as to have a diameter slightly smaller than the inner peripheral surface of the tip portion of 2).