JP2005321080A - Plug for hollow part such as pipe material and plug closing structure - Google Patents

Plug for hollow part such as pipe material and plug closing structure Download PDF

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Publication number
JP2005321080A
JP2005321080A JP2004141601A JP2004141601A JP2005321080A JP 2005321080 A JP2005321080 A JP 2005321080A JP 2004141601 A JP2004141601 A JP 2004141601A JP 2004141601 A JP2004141601 A JP 2004141601A JP 2005321080 A JP2005321080 A JP 2005321080A
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plug
pipe
plug body
end side
hollow
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Yasuhiro Kikumori
康博 菊森
Akihiro Fujii
暁宏 藤井
Takahisa Kitao
隆久 北尾
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Totaku Industries Inc
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Totaku Industries Inc
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Priority to JP2004141601A priority Critical patent/JP2005321080A/en
Priority to CN 200510070225 priority patent/CN1696562A/en
Publication of JP2005321080A publication Critical patent/JP2005321080A/en
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  • Details Of Indoor Wiring (AREA)
  • Gasket Seals (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plug having improved performance of waterproofing a hollow part such as a pipe material and good workability when mounted/demounted. <P>SOLUTION: The plug 1 comprises a first waterproof part 21 provided at an end fit-in portion 2 for close contact with the inner peripheral face of the pipe material 10 and a second waterproof part 22 provided on the rear end side in the fit-in direction for close contact with the port end of the pipe material 10, thereby preventing the entry of water or foreign matters into the pipe material 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は、主として保管中や施工中の管材の端部開口部を塞いで、その端部開口部から管材内部に水や異物が入り込むのを防ぐ栓体及び閉栓構造に関する。   The present invention relates to a plug body and a plug-closing structure that mainly closes an end opening of a pipe during storage or construction and prevents water and foreign matter from entering the inside of the pipe from the end opening.

従来より、電線保護管等の管材を保管又は運搬する際や、配管施工の途中で一日の作業を終了する際に、その管材の内部に水や異物が入り込むのを防ぐために、その管材の端部開口部に栓体を嵌入して閉栓することが一般的に行われている。   Conventionally, in order to prevent water and foreign matter from entering the pipe material when storing or transporting the pipe material such as an electric wire protection pipe, or when ending work for one day in the middle of piping construction, In general, a plug is inserted into the end opening to close the plug.

図５には、栓体を用いて管材を閉栓する構造の従来例が示されている。この閉栓構造では、発泡ポリスチレン樹脂からなる円錐台状の栓体(40)が用いられている。この栓体(40)は、嵌入方向の先端側に向かうに連れて細くなるようなテーパ状に形成されているため、管材(10)の端部にスムーズに挿入できるようになっている。   FIG. 5 shows a conventional example of a structure for closing a pipe using a plug. In this plug-closing structure, a truncated cone-shaped plug (40) made of expanded polystyrene resin is used. Since the plug body (40) is formed in a tapered shape so as to become thinner toward the distal end side in the insertion direction, it can be smoothly inserted into the end portion of the pipe material (10).

なお、特許文献１には、図５に示す栓体(40)と同様、樹脂発泡体からなるテーパ状の栓体の構成が開示されている。   In addition, the structure of the taper-shaped plug body which consists of a resin foam is disclosed by patent document 1 like the plug body (40) shown in FIG.

実開昭５９−４９６４５号公報Japanese Utility Model Publication No.59-49645

しかし、図５に示す栓体(40)では、管材(10)に密着する止水箇所が管端付近の１箇所しかないため、十分な止水性が得られなかった。   However, in the plug body (40) shown in FIG. 5, there is only one water-stopping portion in close contact with the pipe material (10), so that a sufficient water-stopping property cannot be obtained.

また、テーパ状の栓体(40)は、管材(10)に対してスムーズに挿入できる反面、嵌入方向後端側において管端に引っ掛かるようなストッパーとなり得る部分がないため、押し込みが強いと、管材(10)の内部に入り込んでしまって取り出し難くなることがあった。さらに、栓体(40)の嵌入方向先端側に抜け止めとなり得る部分がないため、管材(10)に嵌入した栓体(40)が振動や衝撃等によって抜け外れてしまう恐れがあった。なお、特許文献１の栓体についても、これらの点で同様の欠点を有している。   In addition, the tapered plug body (40) can be smoothly inserted into the pipe material (10), but there is no portion that can be hooked to the pipe end on the rear end side in the fitting direction, so if the push is strong, The tube material (10) may get inside and become difficult to remove. Furthermore, since there is no portion that can be prevented from coming off at the distal end side in the insertion direction of the plug body (40), the plug body (40) fitted into the pipe member (10) may come off due to vibration or impact. Note that the plug body of Patent Document 1 also has the same drawbacks in these respects.

さらにまた、栓体の素材として発泡ポリスチレン樹脂を用いた場合には、柔軟性に乏しくて、へたりやさくれが生じやすいため、止水性や取付け取り外し時の作業性をさらに悪くしていた。   Further, when a polystyrene foam resin is used as the material of the plug body, it is poor in flexibility, and is liable to sag and roll, so that the water-stopping property and workability at the time of attachment / detachment are further deteriorated.

そこで、この発明は、上記の不具合を解消して、管材等の中空部の止水性を向上させるとともに、栓体の取付け及び取り外しの際における作業性を向上させることを目的とする。   SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-described problems, improve the water-stopping property of a hollow portion such as a tube material, and improve workability when attaching and detaching a plug body.

上記の課題を解決するため、この発明における管材等の中空部用の栓体は、管材等の筒状中空部の端部開口部を閉塞するためその端部開口部に嵌入されるものであって、弾性変形可能な軟質樹脂からなり、嵌入方向中間部の外径が両端部の外径よりも小さい外形状を備え、且つ、前記両端部の一方である先端嵌入部をその嵌入部の外径よりも小径の前記開口部へ挿入したとき、この先端嵌入部が弾性変形して前記中空部の内周面へ密着する第１の止水部と、中空部の口端よりも外側の部分が膨らんだ状態に弾性変形してその口端に密着する第２の止水部とを備えていることを特徴とする。   In order to solve the above-described problems, the plug for a hollow portion such as a pipe in the present invention is fitted into the end opening to close the end opening of a cylindrical hollow portion such as a pipe. The outer end of the insertion direction intermediate portion has an outer shape smaller than the outer diameter of both end portions, and the tip insertion portion which is one of the both end portions is provided outside the insertion portion. When inserted into the opening having a diameter smaller than the diameter, a first water stop portion that is elastically deformed and closely contacts the inner peripheral surface of the hollow portion, and a portion outside the mouth end of the hollow portion And a second water stop portion that is elastically deformed into a swollen state and is in close contact with the mouth end.

ここで、筒状中空部は、筒状となっていれば断面形状は特に限定されないものであり、例えば断面矩形状の角形管もこれに含まれる。また、管材以外の筒状中空部としては、例えば容器の一部分として筒状に形成された中空部が考えられる。   Here, as long as the cylindrical hollow part is cylindrical, the cross-sectional shape is not particularly limited, and includes, for example, a rectangular tube having a rectangular cross section. Moreover, as a cylindrical hollow part other than a pipe material, the hollow part formed in the cylinder shape as a part of container is considered, for example.

また、前記嵌入方向中間部の小径部よりも嵌入方向先端側の外周面が、その先端側に向かって徐々に径を拡大させるような傾斜面に形成されている。   Further, the outer peripheral surface on the distal end side in the insertion direction with respect to the small diameter portion of the intermediate portion in the insertion direction is formed as an inclined surface that gradually increases in diameter toward the distal end side.

さらに、前記嵌入方向中間部の小径部よりも嵌入方向後端側の外周面が、その後端側に向かって徐々に径を拡大させるような傾斜面に形成されて、この傾斜面が前記口端へ密着することで前記第２の止水部となるものである。   Furthermore, the outer peripheral surface on the rear end side in the insertion direction with respect to the small-diameter portion in the intermediate portion in the insertion direction is formed as an inclined surface that gradually increases in diameter toward the rear end side, and this inclined surface is the mouth end. It becomes the second water stop part by closely contacting.

またさらに、前記の先端側の傾斜面と後端側の傾斜面とが、栓体全体が鼓状となるように湾曲している。   Furthermore, the inclined surface on the front end side and the inclined surface on the rear end side are curved so that the entire plug body has a drum shape.

具体的に、前記軟質樹脂が、発泡ポリエチレン樹脂等の樹脂発泡体とされている。   Specifically, the soft resin is a resin foam such as a foamed polyethylene resin.

また、この発明における管材等の中空部の閉栓構造は、上記の栓体の前記第１の止水部が、先端嵌入部の外径よりも小径である管材等の筒状中空部の端部開口部に挿入され、且つ、前記第２の止水部が前記中空部の口端に密着されて、中空部の端部開口部が閉塞されていることを特徴とする。   Further, in the plug structure of the hollow portion such as a pipe material in the present invention, the end portion of the cylindrical hollow portion such as the pipe material in which the first water stop portion of the plug body is smaller in diameter than the outer diameter of the tip insertion portion. It is inserted in an opening part, The said 2nd water stop part is closely_contact | adhered to the mouth end of the said hollow part, The end part opening part of a hollow part is obstruct | occluded, It is characterized by the above-mentioned.

この発明の栓体を使用することで、２箇所の止水部によって管材等の中空部の端部開口部を止水することができ、止水性の向上を図ることができる。すなわち、栓体を管材等の中空部の端部開口部に挿入することで、第１の止水部が、弾性変形しながら中空部内周面に強い力で密着するとともに、第２の止水部が、外側に膨らんだ状態で弾性変形して中空部の口端に密着し、これにより２箇所の止水ゾーンが構成されて止水を確実に行う。   By using the plug body of the present invention, the end opening of the hollow portion of the pipe member or the like can be water-stopped by the two water-stop portions, and the water-stop performance can be improved. That is, by inserting the plug into the end opening of the hollow portion such as a tube material, the first water stop portion comes into close contact with the inner peripheral surface of the hollow portion with a strong force while being elastically deformed. The portion is elastically deformed in a state where it swells outward and is brought into close contact with the mouth end of the hollow portion, thereby forming two water-stop zones and ensuring water stop.

また、第１止水部では上記のように弾性変形を伴った強い密着力が働いているため、第１止水部が抜け止めとしても機能するようになり、栓体が例えば振動や衝撃等によって中空部から簡単に抜け外れてしまうのを防止することができる。   In addition, since the first water stop portion has a strong adhesion force with elastic deformation as described above, the first water stop portion also functions as a stopper, and the plug body is, for example, vibration or shock Therefore, it can be prevented that the hollow part easily comes off.

さらに、第２止水部では、口端よりも外側に膨らんだ状態で口端に密着しているため、栓体の押し込み過ぎを防止するストッパーとしても機能するようになり、栓体が中空部へ入り込んでしまって取り外せなくなるのを防止することができる。   Furthermore, since the second water stop portion is in close contact with the mouth end in a state of swelling outward from the mouth end, the second water stop portion also functions as a stopper that prevents the plug body from being pushed too far. It is possible to prevent the device from getting into and becoming unable to be removed.

しかも、栓体は、発泡ポリエチレン樹脂等の弾性変形可能な軟質樹脂からなるため、従来のようなへたりやさくれを抑え、取付けや取り外しの時の作業性を向上させることができ、長期に亘っての繰り返し使用も可能となる。   Moreover, since the plug body is made of an elastically deformable soft resin such as foamed polyethylene resin, it is possible to suppress sag and crease as in the past, and to improve workability at the time of attachment and removal, It can be used repeatedly.

また、嵌入方向先端側の外周面を、先端側に向かって徐々に径を拡大させるような傾斜面に形成することで、先端嵌入部に形成した第１止水部が中空部内周面に対して線状に接触して、高い密着力で密着することとなるため、第１止水部の密着性を高めることができる。   In addition, by forming the outer peripheral surface on the distal end side in the insertion direction into an inclined surface that gradually increases in diameter toward the distal end side, the first water stop portion formed in the distal end insertion portion is relative to the inner peripheral surface of the hollow portion. Therefore, the first water stop portion can be improved in adhesion.

さらに、第２止水部となる嵌入方向後端側の外周面を、後端側に向かって徐々に径を拡大させるような傾斜面に形成することで、栓体を中空部内に挿入する際には、スムーズに挿入することができる。   Furthermore, when the plug body is inserted into the hollow portion by forming the outer peripheral surface on the rear end side in the insertion direction, which becomes the second water stop portion, into an inclined surface that gradually increases in diameter toward the rear end side. It can be inserted smoothly.

さらにまた、栓体の形状を鼓状として嵌入方向中間部を小径とすることで、管材等の中空部への栓体の挿入をよりスムーズに行うことができる。さらに、栓体の成形を後述の単なる打ち抜き加工によって容易に行うことができるため、製造コストを低減することができる。   Furthermore, the plug body can be inserted more smoothly into the hollow portion of the pipe material or the like by making the shape of the plug body a drum shape and making the intermediate portion in the insertion direction have a small diameter. Furthermore, since the plug can be easily formed by a simple punching process described later, the manufacturing cost can be reduced.

以下、この発明の実施形態を図面に基づいて詳細に説明する。図１は、この発明の一実施形態に係る管材閉塞用の栓体(１)を示している。この栓体(１)は、管材(10)の端部開口部(11)を閉塞するためその端部開口部(11)に嵌入されるものである。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a plug (1) for closing a pipe material according to an embodiment of the present invention. This plug (1) is fitted into the end opening (11) to close the end opening (11) of the pipe member (10).

栓体(１)は、例えば独立気泡構造の発泡ポリエチレン樹脂等の弾性変形可能な軟質樹脂からなり、例えば断面略円形の鼓状に形成されている。すなわち、この栓体(１)は、嵌入方向中間部(４)の外径が嵌入方向先端側及び後端側の両端部(２)(３)の外径よりも小さい外形状を備えている。しかも、この栓体(１)は、嵌入方向中間部(４)の小径部よりも嵌入方向先端側の外周面が、その先端側に向かって徐々に径を拡大させるような湾曲した傾斜面(５)に形成され、嵌入方向中間部(４)の小径部よりも嵌入方向後端側の外周面が、その後端側に向かって徐々に径を拡大させるような湾曲した傾斜面(６)に形成されている。   The plug (1) is made of an elastically deformable soft resin such as a foamed polyethylene resin having a closed cell structure, and is formed in a drum shape having a substantially circular cross section, for example. That is, the plug body (1) has an outer shape in which the outer diameter of the insertion direction intermediate portion (4) is smaller than the outer diameters of both end portions (2) and (3) on the front end side and rear end side in the insertion direction. . Moreover, the plug body (1) has a curved inclined surface (the outer peripheral surface on the distal end side in the insertion direction with respect to the small diameter portion of the intermediate portion (4) in the insertion direction gradually increases in diameter toward the distal end side ( 5), the outer peripheral surface on the rear end side in the insertion direction with respect to the small diameter portion of the intermediate portion (4) in the insertion direction is a curved inclined surface (6) that gradually increases in diameter toward the rear end side. Is formed.

図２(ａ)に示すように、栓体(１)の嵌入方向両端部の外径(Ｄ1)は、互いに略等しくなるように形成されており、この栓体(１)によって閉栓される管材(10)の内径(Ｄ3)よりも大径となっている。また、栓体(１)の嵌入方向中間部(４)の外径(Ｄ2)が、管材(10)の内径(Ｄ3)と比べてほぼ同じか又は若干大径となっている。なお、嵌入方向中間部(４)の外径(Ｄ2)は、管材(10)の内径(Ｄ3)より小径であっても良い。   As shown in FIG. 2 (a), the outer diameters (D1) of both ends of the plug body (1) in the insertion direction are formed to be substantially equal to each other, and the pipe member to be plugged by the plug body (1). It is larger than the inner diameter (D3) of (10). Further, the outer diameter (D2) of the insertion direction intermediate portion (4) of the plug (1) is substantially the same as or slightly larger than the inner diameter (D3) of the pipe member (10). The outer diameter (D2) of the insertion direction intermediate portion (4) may be smaller than the inner diameter (D3) of the pipe material (10).

この栓体(１)の嵌入方向先端側の先端嵌入部(２)には、管材(10)への挿入に伴って弾性変形して管材(10)の内周面へ密着する第１の止水部(21)が形成されている。具体的には、嵌入方向先端側の垂直端面(８)と傾斜面(５)とのコーナー部分が第１止水部(21)となっている。   In the distal end insertion portion (2) on the distal end side in the insertion direction of the plug body (1), a first stopper is attached to the inner peripheral surface of the tubular material (10) by being elastically deformed upon insertion into the tubular material (10). A water part (21) is formed. Specifically, a corner portion between the vertical end surface (8) and the inclined surface (5) on the front end side in the insertion direction is the first water stop portion (21).

また、栓体(１)の嵌入方向後端側の傾斜面(６)が、管材(10)への挿入に伴って、管材(10)の口端よりも外側の部分が膨らんだ状態に弾性変形して、その口端に密着する第２の止水部(22)となっている。   In addition, the inclined surface (6) on the rear end side in the insertion direction of the plug (1) is elastic in a state in which the portion outside the mouth end of the tube (10) is swollen with the insertion into the tube (10). The second water stop portion (22) is deformed and is in close contact with the mouth end.

上記構成の栓体(１)を管材(10)の端部開口部(11)に挿入すると、先ず、図２(ｂ)に示すように、第１止水部(21)が管材(10)の内周面に当接しながら、嵌入方向の反対側に向かって反り返るように弾性変形する。   When the plug (1) having the above structure is inserted into the end opening (11) of the pipe (10), first, as shown in FIG. 2 (b), the first water stop (21) is connected to the pipe (10). While being in contact with the inner peripheral surface, the elastic deformation is performed so as to warp toward the opposite side of the insertion direction.

続いて、栓体(１)をさらに管材(10)の奥側に向かって押し込むと、第２止水部(22)が、管材(10)口端に押し付けられながら口端よりも外側に膨らんだ状態で弾性変形し、そのまま栓体(１)を押し込み続けると、管材(10)口端の外側部分の膨らみが徐々に大きくなっていく。   Subsequently, when the plug (1) is pushed further toward the back of the pipe (10), the second water stop (22) swells outside the mouth end while being pressed against the pipe (10) mouth end. When the plug body (1) is pushed in as it is, the bulge of the outer portion of the tube (10) mouth end gradually increases.

そして、栓体(１)の押し込みが完了すると、図２(ｃ)に示すように、第１止水部(21)が、弾性変形に伴う復元力によって管材(10)の内周面に強い力で線状に密着するとともに、第２止水部(22)が、圧縮に伴う復元力によって管材(10)口端に強い力で密着する。これによって、２箇所の止水ゾーンが形成され、管材(10)内部への水や異物の侵入を確実に防止する。さらに、嵌入方向中間部(４)の外径(Ｄ2)を、管材(10)の内径(Ｄ3)よりも大径とすることで、第１止水部(21)と第２止水部(22)との間において、栓体(１)が管材(10)内周面へ確実に密着して、防水性がより一層高められている。   When the push-in of the plug (1) is completed, as shown in FIG. 2 (c), the first water stop (21) is strong against the inner peripheral surface of the pipe (10) by the restoring force accompanying the elastic deformation. The second water stop portion (22) is brought into close contact with the end of the pipe (10) with a strong force by the restoring force accompanying compression. As a result, two water stop zones are formed to reliably prevent water and foreign matter from entering the pipe (10). Further, by setting the outer diameter (D2) of the intermediate portion (4) in the insertion direction to be larger than the inner diameter (D3) of the pipe member (10), the first water stop portion (21) and the second water stop portion ( 22), the plug (1) is securely adhered to the inner peripheral surface of the pipe (10), and the waterproofness is further enhanced.

しかも、発泡ポリエチレン樹脂等の柔軟性に優れた軟質樹脂を素材とした栓体(１)であるため、発泡ポリスチレン樹脂等を素材とした従来の栓体と比べて容易にへたったり、さくれたりすることがなく、長期に亘って安定した止水性を確保することができる。   Moreover, since the plug body (1) is made of a soft resin excellent in flexibility, such as a foamed polyethylene resin, it can be easily squeezed or rolled up compared to a conventional plug body made of a foamed polystyrene resin or the like. The stable water-stopping property can be ensured over a long period of time.

また、栓体(１)の挿入に際しては、栓体(１)の嵌入方向中間部(４)が、両端部に比べて小径となっているため、比較的スムーズに挿入することができるようになっている。また、栓体(１)の嵌入方向後端側の傾斜面(６)が第２止水部(21)となっているため、第２止水部(21)を徐々に外側に膨らませながら栓体(１)をスムーズに挿入することができる。   Further, when inserting the plug body (1), the intermediate portion (4) in the insertion direction of the plug body (1) has a smaller diameter than both ends, so that it can be inserted relatively smoothly. It has become. Moreover, since the inclined surface (6) on the rear end side in the insertion direction of the plug body (1) is the second water stop portion (21), the plug is formed while gradually inflating the second water stop portion (21) outward. The body (1) can be inserted smoothly.

さらに、第２止水部(22)が管材(10)口端の外側で大きく膨らんだ状態となるため、栓体(１)をある程度の力で押しても、第２止水部(22)が管材(10)口端に引っ掛かってそれ以上奥側へ押し込まれないようになっている。すなわち、第２止水部(22)がストッパーとしても機能するようになっており、それによって、管材(10)への栓体(１)の押し込み過ぎをなくして、取り外せなくなるのを防止できる。   Furthermore, since the second water stop portion (22) is greatly swollen outside the end of the pipe (10), even if the plug (1) is pushed with a certain amount of force, the second water stop portion (22) is The pipe (10) is caught at the mouth end so that it cannot be pushed further into the back. That is, the second water stop portion (22) also functions as a stopper, thereby preventing the plug body (1) from being pushed too much into the pipe material (10) and preventing it from being removed.

さらに、この閉栓状態においては、図３に示すように、第１止水部(21)が、嵌入方向の反対側に向かってひれ状に折り返された状態で管材(10)の内周面に密着している。従って、管材(10)から抜き出る方向の力が栓体(１)に働いた場合に、第１止水部(21)が管材(10)内周面に引っ掛かって、栓体(１)が管材(10)から容易に抜け出ないようになっている。   Further, in this closed state, as shown in FIG. 3, the first water stop portion (21) is folded back in the shape of a fin toward the opposite side of the fitting direction, and is formed on the inner peripheral surface of the pipe member (10). It is in close contact. Therefore, when the force in the direction of pulling out from the pipe (10) acts on the plug (1), the first water stop (21) is caught on the inner peripheral surface of the pipe (10), and the plug (1) It is designed not to easily escape from the pipe (10).

この栓体(１)は、図４に示すように、発泡ポリエチレン樹脂からなる板状材料(30)を円筒状のパンチ(31)で打ち抜くことによって、容易に製造することができる。すなわち、図４(ａ)に示すような切断の途中の状態において、パンチ(31)の下方に位置する板状材料(30)の打ち抜き部分は、パンチ(31)から下方向の圧力を受けるため、一部が打ち抜き部分の周辺へ押し出されたような状態で打ち抜かれる。そして、このように周辺へ押し出される状態は、板状材料(30)における上下方向の両端に比べて中間部の方がより顕著に起こるため、図４(ｂ)に示すように、栓体(１)は上下方向の中間部分が細くなるように形成され、結果として鼓状に成形される。ただし、この発明の栓体(１)は、図４に示す製造方法以外の方法で製造することを妨げないものとする。   As shown in FIG. 4, the plug (1) can be easily manufactured by punching a plate-like material (30) made of a foamed polyethylene resin with a cylindrical punch (31). That is, in the state in the middle of cutting as shown in FIG. 4A, the punched portion of the plate-like material (30) located below the punch (31) receives a downward pressure from the punch (31). It is punched in a state where a part is pushed out to the periphery of the punched part. And since the state pushed out to the periphery in this way occurs more conspicuously at the middle portion than at both ends of the plate-like material (30) in the vertical direction, as shown in FIG. 1) is formed so that the middle part in the vertical direction becomes thin, and as a result, is formed into a drum shape. However, the plug body (1) of the present invention is not obstructed from being manufactured by a method other than the manufacturing method shown in FIG.

なお、この発明は、上記実施形態に限定されるものではなく、この発明の範囲内で上記実施形態に多くの修正及び変更を加え得ることは勿論である。   In addition, this invention is not limited to the said embodiment, Of course, many corrections and changes can be added to the said embodiment within the scope of this invention.

例えば、栓体(１)の素材としては、発泡ポリエチレン樹脂以外の樹脂発泡体であっても良く、ＡＳ、ＡＢＳ、ポリプロピレン、ポリ塩化ビニル、ポリビニルアルコール、ポリアミド、ポリウレタン、フェノール樹脂、ユリア樹脂、エポキシ樹脂、アクリル樹脂、シリコーン、ピラニル樹脂、ポリイソシアヌレート、ポリイミド、アセチルセルロース、ビスコース、天然ゴム、スチレン−ブタジエンゴム、ニトリルゴム、クロロプレンゴム、多硫化ゴム等を用いるようにしても良い。   For example, the material of the plug body (1) may be a resin foam other than the foamed polyethylene resin, AS, ABS, polypropylene, polyvinyl chloride, polyvinyl alcohol, polyamide, polyurethane, phenol resin, urea resin, epoxy. Resin, acrylic resin, silicone, pyranyl resin, polyisocyanurate, polyimide, acetylcellulose, viscose, natural rubber, styrene-butadiene rubber, nitrile rubber, chloroprene rubber, polysulfide rubber, and the like may be used.

また、栓体(１)の材質は、先端嵌入部(２)の外径(Ｄ1)よりも小径の管材(10)に嵌入されたときに、その管材(10)内周面の形状に追従して弾性変形できる程度の柔軟性を有していれば良く、必ずしも樹脂発泡体に限られない。   Moreover, the material of the plug body (1) follows the shape of the inner peripheral surface of the pipe material (10) when it is fitted into the pipe material (10) having a diameter smaller than the outer diameter (D1) of the tip fitting portion (2). Thus, it is only necessary to have a flexibility that can be elastically deformed, and is not necessarily limited to the resin foam.

さらに、上記実施形態においては、断面略円形の管材(10)に対応するようにして、栓体(１)が断面円形の鼓状に形成されているが、断面略矩形状に形成して、角形管の端部開口部を閉塞するようにしても良い。また、この発明の栓体は、管材を閉栓する以外にも、容器等の一部分として筒状に形成された中空部を閉栓するために用いても良い。   Furthermore, in the above embodiment, the plug body (1) is formed in a drum shape with a circular cross section so as to correspond to the pipe member (10) having a substantially circular cross section. The end opening of the square tube may be closed. Further, the plug body of the present invention may be used for closing a hollow portion formed in a cylindrical shape as a part of a container or the like in addition to closing a tube material.

この発明の一実施形態に係る栓体を示す斜視図である。It is a perspective view which shows the stopper which concerns on one Embodiment of this invention. 栓体の管材への取付け手順を示す断面図である。It is sectional drawing which shows the attachment procedure to the pipe material of a plug. 栓体の取付け状態を示す要部拡大図である。It is a principal part enlarged view which shows the attachment state of a plug. 栓体の製造方法を示す模式図である。It is a schematic diagram which shows the manufacturing method of a stopper. 管材の閉栓構造の従来例を示す断面図である。It is sectional drawing which shows the prior art example of the plug closure structure of a pipe material.

符号の説明Explanation of symbols

(１) 栓体
(２) 先端嵌入部
(３) 後端部
(４) 中間部
(５) 先端側の傾斜面
(６) 後端側の傾斜面
(10) 管材
(11) 端部開口部
(21) 第１の止水部
(22) 第２の止水部 (1) Plug body
(2) Tip insertion part
(3) Rear end
(4) Middle part
(5) Tip side inclined surface
(6) Inclined surface on the rear end
(10) Pipe material
(11) End opening
(21) First water stop
(22) Second water stop

Claims (7)

管材等の筒状中空部の端部開口部を閉塞するためその端部開口部に嵌入される栓体であって、弾性変形可能な軟質樹脂からなり、嵌入方向中間部の外径が両端部の外径よりも小さい外形状を備え、且つ、前記両端部の一方である先端嵌入部をその嵌入部の外径よりも小径の前記開口部へ挿入したとき、この先端嵌入部が弾性変形して前記中空部の内周面へ密着する第１の止水部と、中空部の口端よりも外側の部分が膨らんだ状態に弾性変形してその口端に密着する第２の止水部とを備えていることを特徴とする管材等の中空部用の栓体。 A plug body that is fitted into the end opening portion to close the end opening portion of a cylindrical hollow portion such as a tube material, and is made of an elastically deformable soft resin. When the tip insertion portion which is one of the both end portions is inserted into the opening portion having a smaller diameter than the outer diameter of the insertion portion, the tip insertion portion is elastically deformed. And a second water stop portion that is elastically deformed into a state in which a portion outside the mouth end of the hollow portion swells and is in close contact with the mouth end of the hollow portion. And a plug for a hollow portion of a pipe or the like. 前記嵌入方向中間部の小径部よりも嵌入方向先端側の外周面が、その先端側に向かって徐々に径を拡大させるような傾斜面に形成されている請求項１記載の管材等の中空部用の栓体。 The hollow portion of a pipe member or the like according to claim 1, wherein an outer peripheral surface on the distal end side in the insertion direction is formed on an inclined surface that gradually increases in diameter toward the distal end side with respect to the small diameter portion of the intermediate portion in the insertion direction. Plug body. 前記嵌入方向中間部の小径部よりも嵌入方向後端側の外周面が、その後端側に向かって徐々に径を拡大させるような傾斜面に形成されて、この傾斜面が前記口端へ密着することで前記第２の止水部となるものである請求項１又は２記載の管材等の中空部用の栓体。 The outer peripheral surface on the rear end side in the insertion direction with respect to the small diameter portion of the intermediate portion in the insertion direction is formed into an inclined surface that gradually increases in diameter toward the rear end side, and this inclined surface is in close contact with the mouth end. The plug for a hollow part such as a pipe material according to claim 1 or 2, which becomes the second water stop part. 前記の先端側の傾斜面と後端側の傾斜面とが、栓体全体が鼓状となるように湾曲している請求項３記載の管材等の中空部用の栓体。 The plug body for a hollow portion of a pipe or the like according to claim 3, wherein the inclined surface on the front end side and the inclined surface on the rear end side are curved so that the entire plug body has a drum shape. 前記軟質樹脂が樹脂発泡体である請求項１乃至４のいずれかに記載の管材等の中空部用の栓体。 The plug for a hollow part such as a pipe according to any one of claims 1 to 4, wherein the soft resin is a resin foam. 前記樹脂発泡体は、発泡ポリエチレン樹脂である請求項５記載の管材等の中空部用の栓体。 The plug for a hollow part of a pipe or the like according to claim 5, wherein the resin foam is a foamed polyethylene resin. 請求項１乃至６のいずれかに記載の栓体の前記第１の止水部が、先端嵌入部の外径よりも小径である管材等の筒状中空部の端部開口部に挿入され、且つ、前記第２の止水部が前記中空部の口端に密着されて、中空部の端部開口部が閉塞されていることを特徴とする管材等の中空部の閉栓構造。 The first water stop portion of the plug body according to any one of claims 1 to 6 is inserted into an end opening portion of a cylindrical hollow portion such as a tube material having a smaller diameter than an outer diameter of a tip insertion portion, A plugging structure for a hollow portion of a pipe or the like, wherein the second water stop portion is in close contact with the mouth end of the hollow portion, and the end opening of the hollow portion is closed.
JP2004141601A 2004-05-11 2004-05-11 Plug for hollow part such as pipe material and plug closing structure Pending JP2005321080A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2004141601A JP2005321080A (en) 2004-05-11 2004-05-11 Plug for hollow part such as pipe material and plug closing structure
CN 200510070225 CN1696562A (en) 2004-05-11 2005-05-11 Plug for hollow portion of tubes and closing structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004141601A JP2005321080A (en) 2004-05-11 2004-05-11 Plug for hollow part such as pipe material and plug closing structure

Publications (1)

Publication Number Publication Date
JP2005321080A true JP2005321080A (en) 2005-11-17

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Country Status (2)

Country Link
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CN (1) CN1696562A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ300587B6 (en) * 2006-02-07 2009-06-24 Patrem Pipe Technologies S.R.O, Protective cover of pipe end

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ300587B6 (en) * 2006-02-07 2009-06-24 Patrem Pipe Technologies S.R.O, Protective cover of pipe end

Also Published As

Publication number Publication date
CN1696562A (en) 2005-11-16

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