JP2005282791A - Resin-made header - Google Patents

Resin-made header Download PDF

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JP2005282791A
JP2005282791A JP2004100535A JP2004100535A JP2005282791A JP 2005282791 A JP2005282791 A JP 2005282791A JP 2004100535 A JP2004100535 A JP 2004100535A JP 2004100535 A JP2004100535 A JP 2004100535A JP 2005282791 A JP2005282791 A JP 2005282791A
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header
resin
branch
main body
water supply
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JP2004100535A
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JP4625264B2 (en
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Tomohiro Nakamura
知広 中村
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Sekisui Chemical Co Ltd
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Sekisui Chemical Co Ltd
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  • Branch Pipes, Bends, And The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a resin-made header capable of reducing deformation of a branched part formed integrally in a header main body and having excellent sealing performance of branch connection. <P>SOLUTION: In this resin-made header 1 constituted by forming the branched part 3 having a receive port 31 integrally in the cylindrical header main body 2, a recessed part 4 is formed on an outer face in the vicinity of a root part of the branched part 3 and wall thickness in this part is prevented to become locally larger than wall thickness in the other part in order to prevent deformation of the branched part 3 by molding shrinkage when performing injection molding. Even if the header main body 2 swells when using it for supplying hot water for a long time, transmission of the deformation due to the swelling onto a branched part 3 side is prevented. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、例えば一般住宅などの給湯・給水配管システムに用いられる樹脂製ヘッダーに関する。   The present invention relates to a resin header used in a hot water supply / water supply piping system such as a general house.

一般住宅などに設置される給湯・給水システムとして、ヘッダー本体に複数の分岐部を設けた流体分配用のヘッダーを床下などに設置し、このヘッダーから給湯管や給水管（例えば塩化ビニル管）を台所、浴室、洗面所に配管する配管システムがある（例えば、特許文献１参照。）。   As a hot water supply / water supply system installed in a general house, a header for fluid distribution with a plurality of branch parts in the header body is installed under the floor, and a hot water supply pipe and a water supply pipe (for example, a vinyl chloride pipe) are installed from this header. There is a piping system for piping in the kitchen, bathroom, and washroom (see, for example, Patent Document 1).

このような給湯・給水配管システムに用いられるヘッダーとしては、従来、砲金などの金属による鋳物で構成されたものが多い。また、最近では、ヘッダー本体に複数の分岐部を一体成形した樹脂製のヘッダーも利用されるようになってきている（例えば、特許文献２参照。）。   Conventionally, a header used in such a hot water supply / water supply piping system is often made of a metal casting such as a gun metal. Recently, a resin header in which a plurality of branch portions are integrally formed in the header body has been used (see, for example, Patent Document 2).

樹脂製ヘッダーの一例を図６及び図７に示す。なお、図７は図６のＦ−Ｆ断面図である。   An example of a resin header is shown in FIGS. 7 is a cross-sectional view taken along line FF in FIG.

この例の樹脂製ヘッダー１０１は、円筒形状のヘッダー本体１０２の側面に、複数（３つ）の分岐部１０３・・１０３がヘッダー本体１０２から突出した状態で一体成形されている。各分岐部１０３には受け口１３１が設けられており、この受け口１３１を利用して、分岐管である給湯管あるいは給水管（例えば塩化ビニル管）などを接続することができる。
特開２００１−０６５００８号公報 特開２０００−２８０７１号公報 The resin header 101 of this example is integrally formed on the side surface of a cylindrical header body 102 with a plurality (three) of branch portions 103... Protruding from the header body 102. Each branch portion 103 is provided with a receiving port 131, and a hot water supply pipe or a water supply pipe (for example, a vinyl chloride pipe), which is a branch pipe, can be connected using the receiving port 131.
JP 2001-065008 A JP 2000-28071 A

ところで、樹脂製ヘッダーの成形には射出成形法が用いられている。射出成形により樹脂製ヘッダーを成形する場合、図６及び図７に示すように、分岐部１０３の根元部の周辺部分１０４の肉厚が、他の部分の肉厚（ヘッダー本体１０２や分岐部１０３の平均的な肉厚）よりも大きくなるような形状に成形している。   By the way, an injection molding method is used for molding the resin header. When molding a resin header by injection molding, as shown in FIGS. 6 and 7, the thickness of the peripheral portion 104 at the base portion of the branch portion 103 is equal to the thickness of the other portion (the header body 102 or the branch portion 103. The average wall thickness is larger than the average wall thickness.

ここで、射出成形において、局部的に肉厚の大きな部分が存在する樹脂成形品を成形した場合、樹脂の成形収縮と高温成形後の熱収縮により変形が生じ、特に肉厚の大きな部分は、収縮の絶対量が大きくなるので形状に歪みが生じる。   Here, in the injection molding, when a resin molded product having a locally thick part is molded, deformation occurs due to resin molding shrinkage and heat shrinkage after high temperature molding. Since the absolute amount of shrinkage increases, the shape is distorted.

従って、図６及び図７に示す構造のように、分岐部１０３の根元部の周辺部分１０４の肉厚が大きい場合、分岐部１０３の変形、特に分岐部１０３に設ける受け口１３１の変形が生じてしてしまい、分岐接続部のシール性能を確保できなくなる。   Therefore, as in the structure shown in FIGS. 6 and 7, when the thickness of the peripheral portion 104 at the base portion of the branch portion 103 is large, the branch portion 103 is deformed, in particular, the receptacle 131 provided in the branch portion 103 is deformed. As a result, the sealing performance of the branch connection portion cannot be ensured.

また、樹脂製ヘッダー１０１を給湯用として長期にわたって使用した場合、平均して肉厚の薄いヘッダー本体１０２が内圧により膨れる現象が発生する。このような現象が発生したときに、分岐部１０３の根元部が厚肉で剛性が高いと、ヘッダー本体１０２の膨れによる変形が分岐部１０３の受け口１３１に伝搬し、受け口１３１のシール面（分岐接続部のシール面）が変形するので、本来のシール性能を確保できなくなる。   In addition, when the resin header 101 is used for hot water for a long period of time, a phenomenon occurs in which the header body 102, which is thin on average, swells due to internal pressure. When such a phenomenon occurs, if the base portion of the branching portion 103 is thick and has high rigidity, deformation due to the swelling of the header body 102 propagates to the receiving port 131 of the branching portion 103, and the sealing surface of the receiving port 131 (branch) Since the sealing surface of the connecting portion is deformed, the original sealing performance cannot be ensured.

本発明はそのような実情に鑑みてなされたもので、ヘッダー本体に一体成形される分岐部の変形が少なくて、分岐接続部のシール性能に優れた樹脂製ヘッダーの提供を目的とする。   The present invention has been made in view of such a situation, and an object of the present invention is to provide a resin header that is less deformed in a branch portion integrally formed with the header body and excellent in sealing performance of the branch connection portion.

本発明は、筒状のヘッダー本体に受け口を有する分岐部が、ヘッダー本体から突出した状態で一体成形されてなる樹脂製ヘッダーにおいて、分岐部の根元部付近の外面に凹部が形成されていることによって特徴づけられる。   According to the present invention, in a resin-made header in which a branch portion having a receiving port in a cylindrical header body is integrally formed in a state protruding from the header body, a recess is formed on the outer surface near the root portion of the branch portion. Characterized by.

本発明の樹脂製ヘッダーによれば、ヘッダー本体に一体成形する分岐部の根元の外面に凹部を形成して、この部分の肉厚が他の部分の肉厚（ヘッダー本体や分岐部の平均的な肉厚）と比べて局部的に大きくならない構造としているので、射出成形時における成形収縮が全体に均一となり、分岐部の変形が少なくなって受け口のシール性能を確保できる。   According to the resin header of the present invention, the concave portion is formed on the outer surface of the base of the branch portion integrally formed with the header body, and the thickness of this portion is the thickness of the other portion (the average of the header body and the branch portion). Therefore, the shrinkage at the time of injection molding is uniform throughout, and the deformation of the branching portion is reduced, so that the sealing performance of the receiving port can be ensured.

また、給湯用として長期に使用した際に、ヘッダー本体に膨れが発生しても、その膨れによる変形が分岐部側に伝搬することを防止できる。従って、長期間にわたって優れたシール性能を維持することができる。   Further, even when the header body swells when used for a long time as a hot water supply, it is possible to prevent the deformation due to the swell from propagating to the branch portion side. Therefore, excellent sealing performance can be maintained over a long period of time.

本発明によれば、筒状のヘッダー本体に受け口を有する分岐部が一体成形されてなる樹脂製ヘッダーにおいて、分岐部の根元部付近の外面に凹部を形成して、この部分の肉厚が他の部分の肉厚と比べて局部的に大きくならないようにしているので、射出成形時における成形収縮が全体に均一となり、分岐部の変形が少なくなる。また、給湯用として長期に使用した際に、ヘッダー本体に膨れが発生しても、その膨れによる変形が分岐部側に伝搬することを防止できる。   According to the present invention, in the resin header in which the branch portion having the receiving port is integrally formed on the cylindrical header body, the concave portion is formed on the outer surface in the vicinity of the root portion of the branch portion, and the thickness of this portion is different. Therefore, the shrinkage at the time of injection molding is uniform throughout and the deformation of the branching portion is reduced. Moreover, even when the header body swells when used for a long time as a hot water supply, it is possible to prevent the deformation due to the swell from propagating to the branch portion side.

従って、本発明によれば、分岐接続部のシール性能に優れ、しかも長期間にわたって優れたシール性能を維持することが可能な樹脂製ヘッダーを実現できる。   Therefore, according to the present invention, it is possible to realize a resin header that is excellent in the sealing performance of the branch connection portion and that can maintain the excellent sealing performance for a long period of time.

以下、本発明の実施形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１及び図２は本発明の樹脂製ヘッダーの実施形態の斜視図である。図３はその実施形態の正面図（Ａ）、平面図（Ｂ）及び側面図（Ｃ）である。図４及び図５はそれぞれ図３のＤ−Ｄ断面図及びＥ−Ｅ断面図である。   1 and 2 are perspective views of an embodiment of the resin header of the present invention. FIG. 3 is a front view (A), a plan view (B), and a side view (C) of the embodiment. 4 and 5 are a DD sectional view and an EE sectional view of FIG. 3, respectively.

この実施形態の樹脂製ヘッダー１は、例えばポリオレフィン系樹脂などの熱可塑性樹脂の射出成形品で、円筒形状のヘッダー本体２の側面に、複数（３つ）の分岐部３・・３がヘッダー本体２から突出した状態で一体成形されている。各分岐部３とヘッダー本体２とは分岐口３２を通じて相互に連通している。   The resin header 1 of this embodiment is an injection molded product of a thermoplastic resin such as polyolefin resin, for example, and a plurality of (three) branch portions 3... 3 are provided on the side surface of the cylindrical header body 2. It is integrally formed in a state protruding from 2. Each branch part 3 and the header main body 2 communicate with each other through a branch port 32.

分岐部３には受け口３１が設けられており、この受け口３１を利用して、分岐管である給湯管あるいは給水管（例えば塩化ビニル管）などを接続することができる。受け口３１の先端には、管の挿入性を高めるために面取り３１ａが施されている。   The branch portion 3 is provided with a receiving port 31, and the receiving port 31 can be used to connect a hot water supply pipe or a water supply pipe (for example, a vinyl chloride pipe) that is a branch pipe. A chamfer 31a is provided at the tip of the receiving port 31 in order to enhance the tube insertion property.

そして、この実施形態においては、分岐部３がヘッダー本体２から立ち上がる部分（分岐部３の根元部付近）の外面に凹部４を形成して、この部分の肉厚が他の部分の肉厚（ヘッダー本体２や分岐部３の平均的な肉厚）と比べて局部的に大きくならない構造とした点に特徴がある。   And in this embodiment, the recessed part 4 is formed in the outer surface of the part (near the root part of the branch part 3) where the branch part 3 rises from the header body 2, and the thickness of this part is the thickness of the other part ( It is characterized in that it has a structure that does not become locally larger than the average thickness of the header body 2 and the branch part 3.

このように凹部４を形成しておくと、射出成形時における成形収縮が全体に均一となり、分岐部３の変形が少なくなるので、受け口３１の真円度が向上し、分岐接続部におけるシール性能を高めることができる。   When the recess 4 is formed in this way, molding shrinkage during injection molding is uniform throughout, and the deformation of the branch part 3 is reduced. Therefore, the roundness of the receiving port 31 is improved and the sealing performance at the branch connection part is improved. Can be increased.

また、樹脂製ヘッダー１を給湯用として長期に使用した際に、ヘッダー本体２に膨れが発生しても、その膨れによる変形が分岐部３側に伝搬することを防止できるので、長期間にわたって優れたシール性能を維持することができる。   In addition, when the resin header 1 is used for hot water supply for a long period of time, even if the header body 2 swells, deformation due to the swell can be prevented from propagating to the branch part 3 side, so it is excellent for a long period of time. The sealing performance can be maintained.

なお、以上の実施形態では、ヘッダー本体２に３つの分岐部３を一体形成した樹脂製ヘッダー１に本発明を適用した例を示したが、本発明はこれに限られることなく、他の任意複数個もしくは１個の分岐部が一体形成される樹脂製ヘッダーにも適用できる。   In the above embodiment, the example in which the present invention is applied to the resin header 1 in which the three branch portions 3 are integrally formed on the header main body 2 has been described. However, the present invention is not limited thereto, and other arbitrary The present invention can also be applied to a resin header in which a plurality of or one branch portion is integrally formed.

本発明は、台所、浴室、洗面所に給湯・給水管などを配管する配管システムに用いられる樹脂製ヘッダーに有効に利用することができる。   INDUSTRIAL APPLICATION This invention can be effectively utilized for the resin-made headers used for the piping system which pipes a hot water supply / water supply pipe etc. to a kitchen, a bathroom, and a washroom.

本発明の樹脂製ヘッダーの実施形態の斜視図である。It is a perspective view of an embodiment of a resin header of the present invention. 同じく実施形態の斜視図である。It is a perspective view of an embodiment similarly. 本発明の樹脂製ヘッダーの実施形態の正面図（Ａ）、平面図（Ｂ）及び側面図（Ｃ）である。It is the front view (A), top view (B), and side view (C) of embodiment of the resin headers of this invention. 図３のＤ−Ｄ断面図である。It is DD sectional drawing of FIG. 図３のＥ−Ｅ断面図である。It is EE sectional drawing of FIG. 従来の樹脂製ヘッダーの縦断面図である。It is a longitudinal cross-sectional view of the conventional resin header. 図６のＦ−Ｆ断面図である。It is FF sectional drawing of FIG.

符号の説明Explanation of symbols

１ 樹脂製ヘッダー
２ ヘッダー本体
３ 分岐部
３１ 受け口
３２ 分岐口
４ 凹部

DESCRIPTION OF SYMBOLS 1 Resin header 2 Header main body 3 Branch part 31 Receiving port 32 Branch port 4 Recessed part

Claims (1)

筒状のヘッダー本体に受け口を有する分岐部が、ヘッダー本体から突出した状態で一体成形されてなる樹脂製ヘッダーにおいて、分岐部の根元部付近の外面に凹部が形成されていることを特徴とする樹脂製ヘッダー。

A resin header in which a branch portion having a receiving port in a cylindrical header main body is integrally formed in a state of protruding from the header main body, wherein a concave portion is formed on the outer surface near the root portion of the branch portion. Resin header.

JP2004100535A 2004-03-30 2004-03-30 Resin header Expired - Lifetime JP4625264B2 (en)

Priority Applications (1)

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JP2004100535A JP4625264B2 (en) 2004-03-30 2004-03-30 Resin header

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Application Number Priority Date Filing Date Title
JP2004100535A JP4625264B2 (en) 2004-03-30 2004-03-30 Resin header

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JP2005282791A true JP2005282791A (en) 2005-10-13
JP4625264B2 JP4625264B2 (en) 2011-02-02

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009257501A (en) * 2008-04-17 2009-11-05 Mirai Ind Co Ltd Water/hot water supplying joint
JP2009257502A (en) * 2008-04-17 2009-11-05 Mirai Ind Co Ltd Water/hot water supplying joint

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000240879A (en) * 1998-12-25 2000-09-08 Sekisui Chem Co Ltd Header for distributing fluid
JP2003176895A (en) * 2001-12-11 2003-06-27 Sekisui Chem Co Ltd Header and fixing structure therefor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000240879A (en) * 1998-12-25 2000-09-08 Sekisui Chem Co Ltd Header for distributing fluid
JP2003176895A (en) * 2001-12-11 2003-06-27 Sekisui Chem Co Ltd Header and fixing structure therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009257501A (en) * 2008-04-17 2009-11-05 Mirai Ind Co Ltd Water/hot water supplying joint
JP2009257502A (en) * 2008-04-17 2009-11-05 Mirai Ind Co Ltd Water/hot water supplying joint

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