JPH051731B2 - - Google Patents

Info

Publication number
JPH051731B2
JPH051731B2 JP61201151A JP20115186A JPH051731B2 JP H051731 B2 JPH051731 B2 JP H051731B2 JP 61201151 A JP61201151 A JP 61201151A JP 20115186 A JP20115186 A JP 20115186A JP H051731 B2 JPH051731 B2 JP H051731B2
Authority
JP
Japan
Prior art keywords
pipe
pipe body
flange
engine
flange portion
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.)
Expired - Fee Related
Application number
JP61201151A
Other languages
Japanese (ja)
Other versions
JPS6356426A (en
Inventor
Joji Kasugai
Juji Tsuchikawa
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.)
Toyoda Gosei Co Ltd
Original Assignee
Toyoda Gosei 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 Toyoda Gosei Co Ltd filed Critical Toyoda Gosei Co Ltd
Priority to JP61201151A priority Critical patent/JPS6356426A/en
Publication of JPS6356426A publication Critical patent/JPS6356426A/en
Publication of JPH051731B2 publication Critical patent/JPH051731B2/ja
Granted legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00Flanged joints
    • F16L23/02Flanged joints the flanges being connected by members tensioned axially

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】 <産業上の利用分野> この発明は、相手部材へ取り付けるためのフラ
ンジ部を端部に備えた樹脂製の曲りパイプに関
し、例えば、エンジン用吸気パイプやエアコン関
係の特に気密性を必要とする配管において、ホー
スと機器との連結に用いると好適なものである。
[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a resin bent pipe having a flange at the end for attachment to a mating member, and is particularly useful for, for example, engine intake pipes and air conditioners. It is suitable for use in connecting hoses and equipment in piping that requires airtightness.

<従来の技術> 第4図に、エンジン用吸気パイプとして用いた
従来のフランジ付きパイプ(以下「パイプ」)1
を示す。
<Prior art> Fig. 4 shows a conventional flanged pipe (hereinafter referred to as "pipe") 1 used as an engine intake pipe.
shows.

このパイプ1は屈曲したパイプ本体3とフラン
ジ部5から構成され、フランジ部5には、エンジ
ン本体(図示省略)へ固定するためのねじ孔7が
2つ穿設されている。パイプ3はゴムホース製の
ポート部9に連結され、ポート部9はチヤンバー
部11に集結して、いわゆるインレツトマニホル
ド部を構成する。
The pipe 1 is composed of a bent pipe body 3 and a flange portion 5, and the flange portion 5 has two screw holes 7 for fixing it to an engine body (not shown). The pipe 3 is connected to a port section 9 made of a rubber hose, and the port section 9 is assembled into a chamber section 11 to constitute a so-called inlet manifold section.

上記のようにエンジン本体へ直接固定されるパ
イプ1は、エンジンの熱に耐えるように、アルミ
のダイカストで製造されるのが一般的であつた。
しかし、材料コストの低減やエンジンまわりの軽
量化の見地から、パイプ1を樹脂材料で射出によ
り成形することが試みられている。このように、
射出成形すると、パイプ本体3とフランジ部5
(ねじ孔7も含めて)とを一体成形することがで
き、かつ製品もアルミダイカスト製の製品より、
軽量化される。また、樹脂材料の耐熱性に関して
も、近時の材料開発により、ポリアミドやポリフ
エニレンサルフアイド等(及びこれらに無機フイ
ラーを充填したもの)において、充分使用に耐え
得るものが提供されている(特開昭58−82059、
59−198116号公報等参照)。
The pipe 1, which is directly fixed to the engine body as described above, was generally manufactured from aluminum die-casting so as to withstand the heat of the engine.
However, from the viewpoint of reducing material costs and reducing the weight of the parts around the engine, attempts have been made to mold the pipe 1 from a resin material by injection. in this way,
When injection molded, the pipe body 3 and flange part 5
(including the screw hole 7), and the product is also better than an aluminum die-cast product.
Lighter. In addition, with regard to the heat resistance of resin materials, recent material developments have provided materials such as polyamide and polyphenylene sulfide (and those filled with inorganic fillers) that can withstand sufficient use. Japanese Patent Publication No. 58-82059,
59-198116, etc.).

<発明が解決しようとする問題点> しかし、パイプを射出成形する場合には、中子
の問題がある。即ち、パイプ本体が直線状又は同
心円的に屈曲している場合には、中子をスライド
させて抜くことができたが、エンジンまわりの複
雑さに伴い、最近では、パイプ本体を三次元的に
屈曲させることが余儀なくされている。従つて、
中子をスライドして抜くことが不可能となり、パ
イプを射出により製造することはできない。
<Problems to be Solved by the Invention> However, when injection molding a pipe, there is a problem with the core. In other words, if the pipe body was curved linearly or concentrically, the core could be removed by sliding it out, but due to the complexity of the engine area, recently it has become possible to draw out the pipe body three-dimensionally. It is forced to bend. Therefore,
It becomes impossible to slide the core out and the pipe cannot be manufactured by injection.

尚、中子を可融合金で形成し、融解して除去す
る方策も考えられるが、手間がかかりすぎて実用
的でない。
Although it is possible to form the core from a fusible metal and melt it to remove it, it is too time-consuming and impractical.

<問題点を解決するための手段> 本発明は、かかる問題点にかんがみてなされた
パイプであり、ブロー成形による樹脂製曲りパイ
プ本体と、該パイプ本体を金型にインサートとし
てセツトし、射出成形により前記パイプ本体の端
部に固定されるフランジ部とからなるものであ
る。樹脂製曲りパイプ本体の端部に、フランジ部
が固定されている構成を特徴とする。
<Means for Solving the Problems> The present invention is a pipe made in view of the above problems, and includes a bent resin pipe body made by blow molding, the pipe body set as an insert in a mold, and injection molded. and a flange portion fixed to the end of the pipe body. It is characterized by a structure in which a flange portion is fixed to the end of the resin bent pipe body.

<作用・効果> 上記の如く、本発明のパイプはパイプ本体がブ
ロー成形品となつたので、これを三次元的に屈曲
する構成としても、射出により成形する場合のよ
うな中子の問題は勿論発生しない。そして、この
ようなパイプ本体にフランジ部が固定される構成
であるから、樹脂製の三次元的に屈曲したパイプ
本体を有するパイプを簡易に成形できることとな
る。
<Function/Effect> As mentioned above, the pipe of the present invention has a blow-molded pipe body, so even if it is configured to be bent three-dimensionally, the problem of the core like when molded by injection is avoided. Of course it doesn't happen. Since the flange portion is fixed to such a pipe body, a pipe having a three-dimensionally bent pipe body made of resin can be easily molded.

つまり、本発明によれば、樹脂製のパイプの設
計自由度が大きくなるという効果がある。
In other words, according to the present invention, there is an effect that the degree of freedom in designing the resin pipe is increased.

<実施例> 以下、本発明の実施例を第1図〜第3図に基づ
いて説明する。
<Example> Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3.

この実施例のパイプ21は、従来例と同様にエ
ンジン10とポート部9を連結するためのもの
で、パイプ本体23とフランジ部31から構成さ
れる。三次元的に屈曲されたエルボ状のパイプ本
体23は、ポート部9と連結する側に周方向の膨
出部25が形成され、パイプ本体23がポート部
9へはいり込まないようにしている。また、フラ
ンジ部31を固定する部位には、円筒形のストレ
ート部27とその端部の全周に係止フランジ29
が形成されている。この係止フランジ29には、
まわり止め防止用の突起部又は切欠き部を形成す
ることが好ましい。
The pipe 21 of this embodiment is for connecting the engine 10 and the port section 9 as in the conventional example, and is composed of a pipe body 23 and a flange section 31. The three-dimensionally bent elbow-shaped pipe body 23 has a circumferential bulge 25 formed on the side connected to the port portion 9 to prevent the pipe body 23 from entering the port portion 9. In addition, the part to which the flange part 31 is fixed includes a cylindrical straight part 27 and a locking flange 29 around the entire circumference of the end thereof.
is formed. This locking flange 29 has
It is preferable to form a protrusion or a notch for preventing rotation.

このようなパイプ本体23は、耐熱性の高い樹
脂材料(ナイロン6、ナイロン66等のポリアミド
及びポリフエニレンサルフアイド等又はこれらに
ガラス繊維等の無機フイラーを充填したもの)で
一般的なブローにより成形される。尚、無機フイ
ラーを充填する場合には、エンジン10(フラン
ジ部31)から遠ざかるにつれ熱影響が小さくな
ることにかんがみて、無機フイラーの充填密度に
傾斜(フランジ部31側を高密度に、ポート部9
側を低密度に)をつけて形成することもできる。
また、膨出部25よりポート部9側の部分を蛇腹
状として図より延長させ、該部に可撓性を持たせ
てポート部9の代用をさせることもできる。
Such a pipe body 23 is made of a highly heat-resistant resin material (polyamide such as nylon 6, nylon 66, polyphenylene sulfide, etc., or a material filled with an inorganic filler such as glass fiber) by general blowing. molded. In addition, when filling the inorganic filler, considering that the thermal effect decreases as the distance from the engine 10 (flange part 31) increases, the packing density of the inorganic filler should be varied (high density on the flange part 31 side, high density on the port part). 9
It can also be formed with a low density side).
Further, the portion closer to the port portion 9 than the bulging portion 25 may be made into a bellows shape and extended from the drawing, and this portion may be made flexible to serve as a substitute for the port portion 9.

フランジ部31は、パイプ本体23のストレー
ト部27及び係止フランジ29へこれらをくるむ
ようにして嵌合するリング状の部材であり、第2
図に示した如く、ねじ孔33が2つ穿設されてい
る。尚、ねじ孔33が穿設された部位は厚肉部3
5とされて補強が図られている。
The flange portion 31 is a ring-shaped member that fits into the straight portion 27 and the locking flange 29 of the pipe body 23 so as to wrap around them.
As shown in the figure, two screw holes 33 are bored. Note that the portion where the screw hole 33 is drilled is the thick wall portion 3.
5 for reinforcement.

このフランジ部31はエンジン10へ直接取り
付けられることとなるので、耐熱性のある材料で
形成される必要がある。この実施例では、後述の
如く、射出によりフランジ部31を形成すべく、
ポリアミド等上記パイプ本体23の形成材料を用
いることとした。尚、パイプ本体23とフランジ
部31との形成材料は接着性向上−それから得ら
れる気密性の向上−の見地から同種のものが好ま
しく、更には、両者に結晶性の樹脂を用いかつフ
ランジ部31の形成材料の溶融温度をパイプ本体
23のそれより高く設定することが好ましい。例
えばフランジ部31の形成材料をナイロン66、パ
イプ本体23の形成材料をナイロン6とする。
Since this flange portion 31 will be directly attached to the engine 10, it needs to be formed of a heat-resistant material. In this embodiment, in order to form the flange portion 31 by injection, as described later,
It was decided to use a material for forming the pipe body 23, such as polyamide. It should be noted that it is preferable that the material for forming the pipe body 23 and the flange portion 31 be of the same type from the viewpoint of improving adhesion and thereby improving airtightness. It is preferable that the melting temperature of the forming material is set higher than that of the pipe body 23. For example, the material for forming the flange portion 31 is nylon 66, and the material for forming the pipe body 23 is nylon 6.

次に、実施例のパイプ21の成形方法について
述べる。
Next, a method of forming the pipe 21 of the embodiment will be described.

まず、パイプ本体23を一般的なブロー成形法
にて形成し、そのストレート部27と係止フラン
ジ29をインサートとして金型36へ挿着する。
尚、図中符号37はスライドコアである。そし
て、図示しないスプルー、ランナー及びゲートを
通じてキヤビテイ39へ既述の樹脂材料を射出し
てフランジ部31を形成する。
First, the pipe main body 23 is formed by a general blow molding method, and the straight portion 27 and the locking flange 29 are inserted into the mold 36 as inserts.
Note that the reference numeral 37 in the figure is a slide core. Then, the above-described resin material is injected into the cavity 39 through a sprue, a runner, and a gate (not shown) to form the flange portion 31.

尚、パイプ本体23において、係止フランジ2
9を小さくし、かつストレート部27に所望の可
撓性が得られれば、フランジ部31を金属材料
(アルミ等)や無機材料(セラミツクス等)で形
成し、これへ上記係止フランジ29を圧入する構
成とすることもできる。
In addition, in the pipe body 23, the locking flange 2
9 is made small and the desired flexibility is obtained in the straight portion 27, the flange portion 31 is formed of a metal material (aluminum, etc.) or an inorganic material (ceramics, etc.), and the locking flange 29 is press-fitted therein. It is also possible to have a configuration in which:

以上のように、実施例のパイプ31はパイプ本
体23がブロー成形品とされたので、パイプ31
を3次元に屈曲して形成することが可能となる。
As mentioned above, in the pipe 31 of the embodiment, the pipe body 23 is a blow-molded product, so the pipe 31
It becomes possible to bend and form the shape in three dimensions.

【図面の簡単な説明】[Brief explanation of the drawing]

第1〜3図はこの発明の実施例のフランジ付き
パイプを示し、第1図は縦(第2図におけるI−
I矢視線)断面図、第2図は同じく平面図、第3
図は同じく製造方法を示す断面図であり、第4図
は従来例の斜視図である。 1,21……フランジ付きパイプ、3,23…
…パイプ本体、5,31……フランジ部。
Figures 1 to 3 show a flanged pipe according to an embodiment of the present invention, and Figure 1 is vertical (I--
I arrow line) sectional view, Figure 2 is also a plan view, Figure 3 is a sectional view.
The figure is a sectional view showing the same manufacturing method, and FIG. 4 is a perspective view of a conventional example. 1, 21...Flanged pipe, 3, 23...
...Pipe body, 5, 31...Flange part.

Claims (1)

【特許請求の範囲】[Claims] 1 ブロー成形による樹脂製曲りパイプ本体と、
該パイプ本体を金型にインサートとしてセツト
し、射出成形により前記パイプ本体の端部に固定
されるフランジ部とからなるフランジ付きパイ
プ。
1 A resin bent pipe body made by blow molding,
A flanged pipe consisting of a flange section in which the pipe body is set as an insert in a mold and is fixed to the end of the pipe body by injection molding.
JP61201151A 1986-08-27 1986-08-27 Flanged pipe Granted JPS6356426A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61201151A JPS6356426A (en) 1986-08-27 1986-08-27 Flanged pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61201151A JPS6356426A (en) 1986-08-27 1986-08-27 Flanged pipe

Publications (2)

Publication Number Publication Date
JPS6356426A JPS6356426A (en) 1988-03-11
JPH051731B2 true JPH051731B2 (en) 1993-01-08

Family

ID=16436231

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61201151A Granted JPS6356426A (en) 1986-08-27 1986-08-27 Flanged pipe

Country Status (1)

Country Link
JP (1) JPS6356426A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016132146A (en) * 2015-01-19 2016-07-25 Ai Technology株式会社 Flange part formation structure of cylindrical member, formation method, and sensor cover

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03157593A (en) * 1989-11-14 1991-07-05 Tomishiyou:Kk Tubular piping joint
JP4243699B2 (en) * 2003-06-05 2009-03-25 サニー工業株式会社 Line filter outer cylinder
JP4509515B2 (en) * 2003-09-16 2010-07-21 エクセル株式会社 Blow molded hollow body having connector pipe and method for producing the same
KR102236722B1 (en) * 2018-09-12 2021-04-05 강기문 Internal surface coating equipment of chemical resistant pipes and their coating method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS605297B2 (en) * 1979-07-13 1985-02-09 タイガ−スポリマ−株式会社 The mouth of the vacuum cleaner hose
JPS6051408B2 (en) * 1981-02-03 1985-11-13 タイガ−スポリマ−株式会社 Hose mouth shaping method
JPS57130096U (en) * 1981-02-09 1982-08-13
IT1157111B (en) * 1982-12-03 1987-02-11 Italiana Serrature Torino FLEXIBLE HOSE FOR THE ADDITION OF FUEL FROM THE FILLER TO THE TANK IN A VEHICLE
JPS61202827A (en) * 1985-03-05 1986-09-08 Aisin Seiki Co Ltd Manufacture of hollow resin molding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016132146A (en) * 2015-01-19 2016-07-25 Ai Technology株式会社 Flange part formation structure of cylindrical member, formation method, and sensor cover

Also Published As

Publication number Publication date
JPS6356426A (en) 1988-03-11

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