JP2011058405A - Air cleaner hose - Google Patents

Air cleaner hose Download PDF

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JP2011058405A
JP2011058405A JP2009207915A JP2009207915A JP2011058405A JP 2011058405 A JP2011058405 A JP 2011058405A JP 2009207915 A JP2009207915 A JP 2009207915A JP 2009207915 A JP2009207915 A JP 2009207915A JP 2011058405 A JP2011058405 A JP 2011058405A
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soft
air cleaner
cleaner hose
hard
layer
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Shinji Kuraoka
新治 倉岡
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TOWA BUROO KK
Kojima Industries Corp
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TOWA BUROO KK
Kojima Press Industry Co Ltd
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  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air cleaner hose achieving a reduction in thickness in comparison with the past. <P>SOLUTION: (1) This air cleaner hose 10 molded by exchange blow molding using two kinds of materials of hard material 11 and soft material 12 includes: a hard portion 20 having a single layer structure made of the hard material 11 only; and a soft portion 30 positioned in a different position from the hard material portion 20 in the axial direction of the air cleaner hose 10 and having a two-layer structure composed of a layer made of the hard material 11 and a layer made of the soft material 12. (2) The layer made of the hard material 11 in the soft portion 30 is positioned outside the layer made of the soft material 12. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

本発明は、内燃機関の吸気系に設けられるエアクリーナホースに関し、とくにエクスチェンジブロー成形にて成形される樹脂製のエアクリーナホースに関する。   The present invention relates to an air cleaner hose provided in an intake system of an internal combustion engine, and more particularly to a resin air cleaner hose formed by exchange blow molding.

従来、ハード材とソフト材の2種類の材料を用いたエクスチェンジブロー成形にて管を成形することは知られている(たとえば、特許文献1参照)。
従来の、エクスチェンジブロー成形にて成形される管は、ハード材のみで構成される単層構造の硬質部と、硬質部とは管の軸方向の異なる位置にありソフト材のみで構成される単層構造の軟質部と、からなっている。
Conventionally, it is known to form a tube by exchange blow molding using two types of materials, a hard material and a soft material (see, for example, Patent Document 1).
A conventional tube formed by exchange blow molding has a hard part with a single-layer structure made of only hard material, and the hard part is a single part made of only soft material at different positions in the axial direction of the pipe. And a soft portion having a layer structure.

しかし、従来の、エクスチェンジブロー成形にて成形される管を、内燃機関の吸気系に設けられるエアクリーナホースとして使用するには、つぎの問題点がある。
軽量化やコスト削減の要望に対し、製品品質の観点から管全体の肉厚を薄くすることが非常に困難である。その理由は、軟質部がソフト材のみで構成される単層構造であるため、管全体の肉厚を薄くすると、硬質部では問題はないが、軟質部で、管に要求される耐圧性能、耐負圧性能を満足することができなくなるためである。
なお、軟質部としての品質を維持できる範囲内で、軟質部を構成するソフト材の硬度を上げて軟質部の強度と剛性を高め管全体の肉厚を薄くすることも考えられるが、ソフト材の材料物性値は一般的に温度依存性が高いため、軟質部がソフト材のみで構成される単層構造のままでは、高温(80℃以上)にて実施される耐圧試験、耐負圧試験で管に要求される規格を満足することが依然として困難である。
However, there are the following problems in using a tube formed by conventional exchange blow molding as an air cleaner hose provided in an intake system of an internal combustion engine.
In response to demands for weight reduction and cost reduction, it is very difficult to reduce the thickness of the entire tube from the viewpoint of product quality. The reason is that the soft part has a single layer structure composed only of soft material, so if the overall thickness of the pipe is reduced, there is no problem with the hard part, but the soft part has a pressure resistance required for the pipe, This is because the negative pressure resistance performance cannot be satisfied.
While it is possible to increase the hardness of the soft material that constitutes the soft part to increase the strength and rigidity of the soft part and reduce the overall wall thickness within the range that can maintain the quality of the soft part, In general, the physical properties of the material are highly temperature-dependent, so if the soft part is composed of only a soft material, the single-layer structure is used in a pressure test and negative pressure test conducted at high temperatures (80 ° C or higher). It is still difficult to meet the standards required for tubes.

特開2006−105342号公報JP 2006-105342 A

本発明の目的は、従来に比べて肉厚を薄くできるエアクリーナホースを提供することにある。   An object of the present invention is to provide an air cleaner hose that can be made thinner than the conventional one.

上記目的を達成する本発明はつぎの通りである。
(1) ハード材とソフト材の2種類の材料を用いたエクスチェンジブロー成形にて成形されるエアクリーナホースであって、
前記ハード材のみで構成される単層構造の硬質部と、該硬質部とはエアクリーナホースの軸方向の異なる位置にあり前記ハード材で構成される層と前記ソフト材で構成される層の2層構造とされた軟質部と、を有するエアクリーナホース。
(2) 前記軟質部の、前記ハード材で構成される層は、前記ソフト材で構成される層の外側にある、(1)記載のエアクリーナホース。
The present invention for achieving the above object is as follows.
(1) An air cleaner hose formed by exchange blow molding using two types of materials, a hard material and a soft material,
A hard part having a single-layer structure composed of only the hard material, and the hard part is located at a different position in the axial direction of the air cleaner hose and is composed of a layer composed of the hard material and a layer composed of the soft material. An air cleaner hose having a soft portion having a layer structure.
(2) The air cleaner hose according to (1), wherein the layer of the soft portion made of the hard material is outside the layer made of the soft material.

上記(1)のエアクリーナホースによれば、軟質部がハード材で構成される層とソフト材で構成される層の2層構造とされているため、つぎの効果を得ることができる。
軟質部がソフト材のみで構成される単層構造とされている場合(従来)に比べて、軟質部の剛性と強度を高めることができ、エアクリーナホースの薄肉化を図ることができる。
また、軟質部の、ハード材で構成される層の厚みを変更するだけで、軟質部の剛性と強度を変更することができるため、軟質部の剛性と強度の変更を容易に行なうことができる。
According to the air cleaner hose of the above (1), since the soft part has a two-layer structure of a layer composed of a hard material and a layer composed of a soft material, the following effects can be obtained.
The rigidity and strength of the soft part can be increased and the thickness of the air cleaner hose can be reduced compared to the case where the soft part has a single-layer structure composed only of a soft material (conventional).
Moreover, since the rigidity and strength of the soft part can be changed only by changing the thickness of the layer made of the hard material of the soft part, the rigidity and strength of the soft part can be easily changed. .

上記(2)のエアクリーナホースによれば、軟質部の、ハード材で構成される層が、ソフト材で構成される層の外側にあるため、つぎの効果を得ることができる。
ソフト材で構成される層に比べて傷が付きにくいハード材で構成される層で、ハード材で構成される層に比べて傷が付きやすいソフト材で構成される層を覆うことができ、エアクリーナホースに傷が付くことを抑制できる。
また、硬質部と軟質部の外観を同じにすることができ、硬質部と軟質部の外観が異なる場合に比べて、エアクリーナホースの意匠性を高めることができる。
According to the air cleaner hose of the above (2), since the layer made of the hard material of the soft part is outside the layer made of the soft material, the following effects can be obtained.
It is a layer composed of a hard material that is hard to be scratched compared to a layer composed of a soft material, and can cover a layer composed of a soft material that is easily scratched compared to a layer composed of a hard material, It is possible to prevent the air cleaner hose from being damaged.
Moreover, the external appearance of the hard part and the soft part can be made the same, and the design property of an air cleaner hose can be improved compared with the case where the external appearance of a hard part and a soft part differs.

本発明実施例のエアクリーナホースの、部分半断面図である。It is a partial half sectional view of the air cleaner hose of the embodiment of the present invention. 本発明実施例のエアクリーナホースの、成形途中の(パリソン状態の)部分断面図である。It is a fragmentary sectional view in the middle of fabrication (in a parison state) of an air cleaner hose of an example of the present invention.

以下に、本発明実施例のエアクリーナホースを、図1、図2を参照して、説明する。
本発明実施例のエアクリーナホース10は、樹脂製である。エアクリーナホース10は、自動車のエンジンルーム内で図示略のエアクリーナより吸気流れ方向下流側に配置される。
エアクリーナホース10は、図1に示すように、軸方向一端部またはその近傍(吸気流れ方向上流側)で図示略のエアクリーナから延びる図示略の管に組付けられ(接続され)、軸方向他端部またはその近傍(吸気流れ方向下流側)で図示略の内燃機関側の部材から延びる管1に組付けられる(接続される)。
Hereinafter, an air cleaner hose according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.
The air cleaner hose 10 of the embodiment of the present invention is made of resin. The air cleaner hose 10 is disposed downstream of the unillustrated air cleaner in the intake flow direction in the engine room of the automobile.
As shown in FIG. 1, the air cleaner hose 10 is assembled (connected) to a pipe (not shown) extending from an air cleaner (not shown) at or near one end in the axial direction (upstream side in the intake air flow direction), and the other end in the axial direction. Or is attached (connected) to the pipe 1 extending from a member on the internal combustion engine (not shown) at or near the downstream (downstream side in the intake air flow direction).

エアクリーナホース10の、エアクリーナから延びる管との組付け部分および内燃機関側の部材から延びる管1との組付け部分は、エアクリーナから延びる管または内燃機関側の部材から延びる管1が組付けられた(内挿された)状態で、エアクリーナホース10の半径方向外側からクランプ2にて締め付けられる。 The assembly part of the air cleaner hose 10 with the pipe extending from the air cleaner and the assembly part of the pipe 1 extending from the member on the internal combustion engine side are assembled with the pipe 1 extending from the air cleaner or the pipe 1 extending from the member on the internal combustion engine side. In the state (inserted), the air cleaner hose 10 is tightened by the clamp 2 from the outside in the radial direction.

エアクリーナホース10は、ハード材11のみで構成される単層構造の硬質部20と、硬質部20とはエアクリーナホース10の軸方向の異なる位置にありハード材11で構成される層とソフト材12で構成される層の2層構造とされた軟質部30と、を有する。なお、エアクリーナホース10は、ソフト材12のみで構成される単層構造部分を有しない。 The air cleaner hose 10 includes a hard layer 20 having a single-layer structure composed only of the hard material 11, and the hard portion 20 is located at different positions in the axial direction of the air cleaner hose 10 and a layer composed of the hard material 11 and the soft material 12. And a soft portion 30 having a two-layer structure of layers composed of In addition, the air cleaner hose 10 does not have a single-layer structure portion composed only of the soft material 12.

ハード材(硬質材)11は、たとえば、ポリプロピレンにガラス繊維を10パーセント含有したもの、または、ポリプロピレンにガラス繊維を20パーセント含有したもの等であり、ソフト材(軟質材)12は、ハード材11に比べて軟質であり、たとえば、ポリプロピレンにゴム分を混ぜ合わせたもの等である。 The hard material (hard material) 11 is, for example, a material containing 10 percent glass fiber in polypropylene, or a material containing 20 percent glass fiber in polypropylene, and the soft material (soft material) 12 is the hard material 11. It is softer than, for example, polypropylene mixed with rubber.

軟質部30は、蛇腹部分および管1等との組付け部分を構成する部分であり、硬質部20は、蛇腹部分および管1等との組付け部分以外の部分を構成する部分である。   The soft portion 30 is a portion constituting an assembly portion with the bellows portion and the tube 1 and the like, and the hard portion 20 is a portion constituting a portion other than the assembly portion with the bellows portion and the tube 1 and the like.

軟質部30の、ハード材11で構成される層は、ソフト材12で構成される層の外側にある。すなわち、ハード材11で構成される層が外層であり、ソフト材12で構成される層がハード材11で構成される層より(エアクリーナホース10の半径方向)内側に位置する内層である。ただし、軟質部30の、ハード材11で構成される層は、ソフト材12で構成される層の内側にあってもよい。 The layer made of the hard material 11 in the soft part 30 is outside the layer made of the soft material 12. That is, the layer made of the hard material 11 is the outer layer, and the layer made of the soft material 12 is the inner layer located on the inner side (in the radial direction of the air cleaner hose 10) than the layer made of the hard material 11. However, the layer composed of the hard material 11 of the soft portion 30 may be inside the layer composed of the soft material 12.

エアクリーナホース10の軸方向両端部以外の部分で、軟質部30のハード材11で構成される層の肉厚(外皮膜厚)は、ソフト材12で構成される層の肉厚よりも薄くされている。
軟質部30において、ハード材11で構成される層の肉厚のうち最も肉厚の薄い部分の肉厚は、硬質部20の肉厚の5パーセント以上で15パーセント以下とされている。5パーセント以上であるため、軟質部30でエアクリーナホース10に要求される耐圧,耐負圧性能を満足することができる。また、15パーセント以下であるため、蛇腹部分の屈曲性能が低くなり軟質部30としての品質を満足できなくなることを抑制できるとともに、管1等との組付け部分の組付け荷重(挿入荷重)が高くなり軟質部30としての品質を満足できなくなることを抑制できる。
The thickness (outer film thickness) of the layer composed of the hard material 11 of the soft portion 30 is made thinner than the thickness of the layer composed of the soft material 12 at portions other than both axial ends of the air cleaner hose 10. ing.
In the soft portion 30, the thickness of the thinnest portion of the thickness of the layer made of the hard material 11 is set to 5% or more and 15% or less of the thickness of the hard portion 20. Since it is 5 percent or more, the soft part 30 can satisfy the pressure resistance and negative pressure resistance required for the air cleaner hose 10. Moreover, since it is 15% or less, it can suppress that the bending performance of a bellows part becomes low and can not satisfy the quality as the soft part 30, and the assembly load (insertion load) of the assembly part with the pipe | tube 1 grade | etc., Is also carried out. It can suppress that it becomes high and cannot satisfy the quality as the soft part 30. FIG.

エアクリーナホース10は、ハード材11とソフト材12の2種類の材料を用いたエクスチェンジブロー成形にて成形される。すなわち、エアクリーナホース10は、ハード材11とソフト材12を射出時に図示略の射出装置のノズル部で合流させ、交互に射出速度、射出圧力、タイミングなどをいろいろ変化させることで、ハード材11で構成される部分と、ソフト材12で構成される部分をもつパリソン13(図2参照)を作り、そのパリソン13を図示略の割り型内に置き、パリソン13内部に空気を吹き込むことによりパリソン13を膨らませて型に押し付けて成形される。 The air cleaner hose 10 is formed by exchange blow molding using two types of materials, a hard material 11 and a soft material 12. That is, the air cleaner hose 10 joins the hard material 11 and the soft material 12 at the nozzle portion of an injection device (not shown) at the time of injection, and alternately changes the injection speed, injection pressure, timing, etc. A parison 13 (see FIG. 2) having a portion constituted and a portion constituted by the soft material 12 is made, the parison 13 is placed in a split mold (not shown), and air is blown into the parison 13 to blow the parison 13. Is inflated and pressed against the mold.

パリソン13は、図2に示すように、ハード材11のみで構成される単層構造部分13aと、ハード材11で構成される層とソフト材12で構成される層の2層構造とされた2層構造部分13bと、を有する。なお、パリソン13は、ソフト材12のみで構成される単層構造部分を有しない。
図2に示すパリソン13の単層構造部分13aが、図1に示す成形後のエアクリーナホース10の硬質部20となり、図2に示すパリソン13の2層構造部分13bが、図1に示す成形後のエアクリーナホース10の軟質部30となる。
As shown in FIG. 2, the parison 13 has a single-layer structure portion 13 a composed of only the hard material 11, and a two-layer structure composed of a layer composed of the hard material 11 and a layer composed of the soft material 12. And a two-layer structure portion 13b. Note that the parison 13 does not have a single-layer structure portion composed only of the soft material 12.
The single-layer structure portion 13a of the parison 13 shown in FIG. 2 becomes the hard portion 20 of the molded air cleaner hose 10 shown in FIG. 1, and the two-layer structure portion 13b of the parison 13 shown in FIG. This becomes the soft part 30 of the air cleaner hose 10.

図2に示すように、パリソン13の、軸方向両端部以外の部分の肉厚は、一定である。パリソン13の軸方向両端部以外の部分において、2層構造部分13bの、ハード材11で構成される層の肉厚は一定であってもよく不一定であってもよい。 As shown in FIG. 2, the thickness of the portion of the parison 13 other than both axial end portions is constant. In the portion other than the both ends in the axial direction of the parison 13, the thickness of the layer composed of the hard material 11 of the two-layer structure portion 13b may be constant or non-constant.

つぎに、本発明実施例の作用を説明する。
本発明実施例では、軟質部30がハード材11で構成される層とソフト材12で構成される層の2層構造とされているため、軟質部30がソフト材12のみで構成される単層構造とされている場合(従来)に比べて、軟質部30の剛性と強度を高めることができ、エアクリーナホース10の薄肉化を図ることができる。
Next, the operation of the embodiment of the present invention will be described.
In the embodiment of the present invention, since the soft portion 30 has a two-layer structure including a layer composed of the hard material 11 and a layer composed of the soft material 12, the soft portion 30 is composed of only the soft material 12. The rigidity and strength of the soft part 30 can be increased and the thickness of the air cleaner hose 10 can be reduced as compared with the case where the layer structure is used (conventional).

軟質部30がハード材11で構成される層とソフト材12で構成される層の2層構造とされているため、軟質部30の、ハード材11で構成される層の厚みを変更するだけで(ハード材11で構成される層とソフト材12で構成される層の厚みの比率を変えるだけで)、軟質部30の剛性と強度を変更することができる。そのため、軟質部30の剛性と強度の変更を容易に行なうことができる。   Since the soft part 30 has a two-layer structure of a layer made of the hard material 11 and a layer made of the soft material 12, only the thickness of the soft part 30 made of the hard material 11 is changed. Thus, the rigidity and strength of the soft portion 30 can be changed (by simply changing the ratio of the thickness of the layer composed of the hard material 11 and the layer composed of the soft material 12). Therefore, the rigidity and strength of the soft part 30 can be easily changed.

軟質部30の、ハード材11で構成される層が、ソフト材12で構成される層の外側にあるため、ソフト材12で構成される層に比べて傷が付きにくいハード材11で構成される層で、ハード材11で構成される層に比べて傷が付きやすいソフト材12で構成される層を覆うことができ、エアクリーナホース10に傷が付くことを抑制できる。また、硬質部20と軟質部30の外観を同じにすることができ、硬質部20と軟質部30の外観が異なる場合に比べて、エアクリーナホース10の意匠性を高めることができる。   Since the layer composed of the hard material 11 of the soft part 30 is outside the layer composed of the soft material 12, it is composed of the hard material 11 that is less likely to be scratched than the layer composed of the soft material 12. It is possible to cover the layer made of the soft material 12 that is more easily damaged than the layer made of the hard material 11, and to suppress the air cleaner hose 10 from being damaged. Moreover, the external appearance of the hard part 20 and the soft part 30 can be made the same, and the design property of the air cleaner hose 10 can be improved compared with the case where the external appearances of the hard part 20 and the soft part 30 differ.

1 管
2 クランプ
10 エアクリーナホース
11 ハード材
12 ソフト材
13 パリソン
13a 単層構造部分
13b 2層構造部分
20 硬質部
30 軟質部
DESCRIPTION OF SYMBOLS 1 Pipe 2 Clamp 10 Air cleaner hose 11 Hard material 12 Soft material 13 Parison 13a Single layer structure part 13b Two layer structure part 20 Hard part 30 Soft part

Claims (2)

ハード材とソフト材の2種類の材料を用いたエクスチェンジブロー成形にて成形されるエアクリーナホースであって、
前記ハード材のみで構成される単層構造の硬質部と、該硬質部とはエアクリーナホースの軸方向の異なる位置にあり前記ハード材で構成される層と前記ソフト材で構成される層の2層構造とされた軟質部と、を有するエアクリーナホース。
An air cleaner hose molded by exchange blow molding using two types of materials, hard material and soft material,
A hard part having a single-layer structure composed of only the hard material, and the hard part is located at a different position in the axial direction of the air cleaner hose and is composed of a layer composed of the hard material and a layer composed of the soft material. An air cleaner hose having a soft portion having a layer structure.
前記軟質部の、前記ハード材で構成される層は、前記ソフト材で構成される層の外側にある、請求項1記載のエアクリーナホース。   The air cleaner hose according to claim 1, wherein the layer made of the hard material of the soft portion is outside the layer made of the soft material.
JP2009207915A 2009-09-09 2009-09-09 Air cleaner hose Pending JP2011058405A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101417458B1 (en) 2012-12-10 2014-07-08 현대자동차주식회사 Intake air duct and method for manufacturing the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63158382A (en) * 1986-12-18 1988-07-01 鬼怒川ゴム工業株式会社 Air duct
JPH0185594U (en) * 1987-11-30 1989-06-07
JPH058285A (en) * 1991-06-29 1993-01-19 Tokai Rubber Ind Ltd Resin hose
JPH07293371A (en) * 1994-04-28 1995-11-07 Toyoda Gosei Co Ltd Air intake hose

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63158382A (en) * 1986-12-18 1988-07-01 鬼怒川ゴム工業株式会社 Air duct
JPH0185594U (en) * 1987-11-30 1989-06-07
JPH058285A (en) * 1991-06-29 1993-01-19 Tokai Rubber Ind Ltd Resin hose
JPH07293371A (en) * 1994-04-28 1995-11-07 Toyoda Gosei Co Ltd Air intake hose

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101417458B1 (en) 2012-12-10 2014-07-08 현대자동차주식회사 Intake air duct and method for manufacturing the same

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