JP2004130845A - Air intake duct structure - Google Patents

Air intake duct structure Download PDF

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Publication number
JP2004130845A
JP2004130845A JP2002295058A JP2002295058A JP2004130845A JP 2004130845 A JP2004130845 A JP 2004130845A JP 2002295058 A JP2002295058 A JP 2002295058A JP 2002295058 A JP2002295058 A JP 2002295058A JP 2004130845 A JP2004130845 A JP 2004130845A
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JP
Japan
Prior art keywords
bumper
intake duct
air
hollow portion
hollow
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.)
Granted
Application number
JP2002295058A
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Japanese (ja)
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JP4066767B2 (en
Inventor
Yuji Yamaguchi
山口 雄二
Tetsuaki Sakuma
佐久間 鉄明
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.)
Nissan Shatai Co Ltd
Original Assignee
Nissan Shatai 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
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Priority to JP2002295058A priority Critical patent/JP4066767B2/en
Publication of JP2004130845A publication Critical patent/JP2004130845A/en
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Publication of JP4066767B2 publication Critical patent/JP4066767B2/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an air intake duct structure in which a hollow part is formed by making a bumper through blow molding, whereby it is possible to supply the air into the suction duct of an engine via the hollow part and perform certainly the water cut of the suction air. <P>SOLUTION: The air intake duct structure is configured so that the suction duct 3 of the engine is connected with the hollow part 2 formed in the bumper 1 and sucking the air is conducted via the hollow part 2 so as to remove foreign matter such as water/moisture from the suction air, wherein the hollow part 2 in a string shape is formed in the bumper 1 by making the bumper 1 through blow molding, and the suction duct 3 is connected with one end of the hollow part 2, while an outside air intake hole 7 is formed at the other end of the hollow part 2, and the air taken in from the intake hole 7 is passed through the hollow part 2 and sucked into the duct 3. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は吸気ダクト構造に関し、特に、バンパーをブロー成形して中空部を形成し、その中空部を経由してエンジンの吸気ダクトに空気を供給し、吸気中の水切りを確実に行なう吸気ダクト構造に関する。
【0002】
【従来の技術】
車両のエンジンには吸気ダクトを通してエアークリーナで清浄化された空気が供給される。
エンジンへの吸入空気を取り込む吸気ダクトは、吸入口から雨水が進入しないように吸入口をエンジンルーム内あるいはフロア下等に配設している。そして、図4に示すマイクロバスでは吸気ダクト50をフロア51下から前方へ延ばし、バンパー53の後方で、フロア51の下面へ向けて吸入口54を配置している。尚、符号55はヘッドランプである。
また、エンジン外気導入口への雨水の進入を防止する技術として、特開平8−175195号公報記載の技術が知られている。
【特許文献1】
特開平8−175195号公報
【0003】
【発明が解決しようとする課題】
ところで、吸気中の雨水等の異物を十分低減するためには、エアクリーナケースの容積拡大、吸気ダクトの長大化などがある。このような容積拡大等の異物低減手法を採択する場合、エンジンルーム内の配設スペースの関係から、十分な容積拡大のための余裕空間が確保できない場合がある。また、吸気ダクトの長尺化を行う場合、その取り回しのための十分な余裕空間を確保できない場合がある。
【0004】
特に、エンジンがフロア下に位置するマイクロバス等の車両では、空気の吸気口の配置が難しいという問題があった。
そこで、フロントバンパーに中空部を形成し、その中空部を利用して吸気中の水切りを行なうことができれば効率的である。
前記特開平8−175195号公報の技術ではこのようなバンパーの中空部を利用する点については記載されていない。
本発明は係る従来の問題点を解決するためになされたものであって、その目的とするところは、バンパーをブロー成形して中空部を形成し、その中空部を経由してエンジンの吸気ダクトに空気を供給し、吸気中の水切りを確実に行なう吸気ダクト構造を提供することにある。
【0005】
【課題を解決するための手段】
前記目的を達成するための手段として請求項1記載の吸気ダクト構造では、バンパーに形成された中空部にエンジンの吸気ダクトを接続し、その中空部を通して吸気を行ない、吸気中の水等の異物を除去する吸気ダクト構造であって、バンパーをブロー成形してバンパーに一連の中空部を形成し、その中空部の一端に吸気ダクトを接続し、その中空部の他端に外気の導入口を形成し、その導入口から入った空気をバンパーの中空部を通過させて吸気ダクトへ吸気させる構成とした。
【0006】
請求項2記載の吸気ダクト構造では、請求項1記載の吸気ダクト構造において、バンパー上辺の左右に一連の中空部を形成し、その中空部の左端または右端に空気の導入口を形成し、その中空部の他端に吸気ダクトを接続し、さらに、前記中空部の下側に水抜き孔を形成した。
【0007】
【発明の作用及び効果】
請求項1記載の吸気ダクト構造においては、バンパーをブロー成形してバンパーに一連の中空部を形成し、その中空部の一端に吸気ダクトを接続し、その中空部の他端に外気の導入口を形成し、その導入口から入った空気をバンパーの中空部を通過させて吸気ダクトへ吸気させるので、バンパーを通過する際に吸気中の異物が除去される。
バンパーを利用するので、吸気ダクトの長大化させることなく、効率的に水切りを行なうことができる。
また、ブローバンパーは中空に形成されているため、剛性を高めることができると共に、軽量化が図れるという利点を有している。
【0008】
請求項2記載の吸気ダクト構造においては、バンパー上辺の左右に一連の中空部を形成し、その中空部の左端または右端に空気の導入口を形成し、その中空部の他端に吸気ダクトを接続するので、バンパーの左右を有効に利用して、水切り空間を長く確保することができる。
また、バンパー下側に水抜き孔を形成したので、吸気中の水はここから排水され、エンジンに水が侵入するおそれがない。
【0009】
【発明の実施の形態】
以下、図面に基づいて本発明の実施の形態を説明する。
図1は吸気ダクト構造の概略構成図、図2はA−A断面図、図3はB−B断面図である。
本発明の一実施の形態に係る吸気ダクト構造は図1〜図3に示すように、車両前方に装着されたバンパー1と、そのバンパー1の中空部2に接続された吸気ダクト3を主要な構成とし、吸気ダクト3はエアクリーナー4を経由して図示しないエンジンに接続されている。
【0010】
本実施の形態の車両はマイクロバスであり、バンパー1は車幅に対応した広い横幅と上下幅を有している。
ところで、車両のフロントバンパーは金属板をプレス成形したスチールバンパー、合成樹脂をインジェクション成形したインジェクションバンパー、合成樹脂をブロー成形した中空のブローバンパー等があるが、本発明ではブローバンパーを使用している。
ブロー成形は一般的に型枠内で樹脂をエアブローし、中空のバンパーを一体成形する方法であり、バンパーの表面と裏面の間に中空部が形成され、剛性のあるバンパーが製造される。
前記ブローバンパーは中空に形成されているため、剛性を高めることができると共に、軽量化が図れるという利点を有している。
【0011】
前記バンパー1は左右にランプ孔5、空気孔6等の開口を有し、その開口と開口の間の樹脂部は中空となっている。そして、バンパー1の上辺に沿って左右に中空部2が通過し、この左右に延びる中空部2の右端裏面に空気の導入口7が形成され、中空部2の左端裏面に空気の送出口8が形成されている。そして、その送出口8に吸気ダクト3が接続され、導入口7から入った空気は上辺の中空部2を通過して吸気ダクト3へ吸い込まれるようになっている。
また、中空部2は横方向に連続すると共に、上下にも連続し、バンパーの下辺には所定個所に数個の水抜き孔9が形成されている。そして、吸気中に含まれる水滴はこの水抜き孔から排出されるようになっている。
【0012】
前記バンパー1と吸気ダクト3はそれぞれ車体にボルト等によって固定され、バンパー1の送出口8と吸気ダクト3の入り口は互いに当接した状態で連結されている。そして当接部分にはスポンジ、ゴム等の弾性体10が配設されて両者の接続部は空気が入り込まないように密着されている。
このように、バンパー1と吸気ダクト3をボルトによって剛結せず、弾性体を介在させて接続しているので、取付時の寸法誤差を吸収し、また、車両の振動・衝撃による接続部の破損を防止することができる。
【0013】
次に本実施の形態の作用について説明する。
バンパー1をブロー成形し中空部2、ランプ孔5、空気孔6、導入口7、送出口8等を一体形成する。
このバンパー1をマイクロバス本体に取付け、マイクロバスのフロア下のエンジンから延設された吸気ダクト3をバンパー1の送出口8に当接させ、弾性体10を介在させて接続する。
弾性体10を介在させるので、取付時の寸法誤差を吸収することができ、車両の振動・衝撃による接続部の破損を防止することができる。
バンパーと吸気ダクトを接続することにより、導入口7から中空部2を通過して空気が供給される状態となる。
雨天走行時にはバンパー1の裏の導入口7から空気を確保するので、雨水及びタイヤのスプラッシュ等が侵入しにくい構成となっている。
タイヤが巻き上げるスプラッシュ等が導入口7から侵入することがあっても、バンパー1の中空部2を通過する際に下に落下して水抜き孔9から排出される。
【0014】
以上、本発明の実施の形態を説明してきたが、本発明の具体的な構成は本実施の形態に限定されるものではなく、発明の要旨を逸脱しない範囲の設計変更等があっても本発明に含まれる。
例えば、前記実施の形態で説明したバンパーの開口、導入口、送出口の位置は任意に設定することができ、ブロー成形バンパーの中空部を利用する構成であれば本発明に含まれる。
【図面の簡単な説明】
【図1】本発明の吸気ダクト構造の概略構成図である。
【図2】図1におけるA−A断面図である。
【図3】図1におけるB−B断面図である。
【図4】従来例に係る吸気ダクト構造の説明図である。
【符号の説明】
1 バンパー
2 中空部
3 吸気ダクト
4 エアクリーナー
5 ランプ孔
6 空気孔
7 導入口
8 送出口
9 水抜き孔
10 弾性体
[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intake duct structure, and more particularly to an intake duct structure that blows a bumper to form a hollow portion, supplies air to an intake duct of an engine via the hollow portion, and reliably drains water during intake. About.
[0002]
[Prior art]
Air cleaned by an air cleaner is supplied to an engine of the vehicle through an intake duct.
The intake duct for taking in intake air to the engine has an intake port disposed in an engine room or below a floor so that rainwater does not enter through the intake port. In the microbus shown in FIG. 4, the intake duct 50 extends forward from below the floor 51, and the intake port 54 is arranged behind the bumper 53 toward the lower surface of the floor 51. Reference numeral 55 denotes a headlamp.
Further, as a technique for preventing rainwater from entering the outside air inlet of the engine, there is known a technique described in JP-A-8-175195.
[Patent Document 1]
JP-A-8-175195
[Problems to be solved by the invention]
Incidentally, in order to sufficiently reduce foreign matters such as rainwater in the intake air, there is an increase in the volume of the air cleaner case and an increase in the length of the intake duct. When adopting such a foreign matter reduction technique such as volume expansion, there may be a case where it is not possible to secure a sufficient space for sufficient volume expansion due to the arrangement space in the engine room. Further, when the length of the intake duct is increased, there may be a case where it is not possible to secure a sufficient room for the operation.
[0004]
In particular, in a vehicle such as a microbus in which the engine is located below the floor, there is a problem that it is difficult to arrange the air intake port.
Therefore, it is efficient if a hollow portion is formed in the front bumper and the hollow portion can be used to drain water during intake.
The technique of Japanese Patent Application Laid-Open No. 8-175195 does not describe the use of such a hollow portion of a bumper.
The present invention has been made in order to solve the conventional problems, and an object of the present invention is to form a hollow portion by blow molding a bumper, and through the hollow portion, an intake duct of an engine. The present invention is to provide an intake duct structure that supplies air to the air intake and reliably drains water during intake.
[0005]
[Means for Solving the Problems]
The intake duct structure according to claim 1, wherein the intake duct of the engine is connected to a hollow portion formed in the bumper, air is taken through the hollow portion, and foreign matters such as water in the intake air are provided. In this structure, a series of hollows are formed in the bumper by blow molding the bumper, an air intake duct is connected to one end of the hollow, and an outside air inlet is provided at the other end of the hollow. Then, the air entering through the inlet is passed through the hollow portion of the bumper and is taken into the intake duct.
[0006]
In the intake duct structure according to claim 2, in the intake duct structure according to claim 1, a series of hollow portions are formed on the left and right sides of the upper side of the bumper, and an air inlet is formed on the left end or the right end of the hollow portion. An intake duct was connected to the other end of the hollow portion, and a drain hole was formed below the hollow portion.
[0007]
Function and effect of the present invention
In the intake duct structure according to claim 1, the bumper is blow-molded to form a series of hollow portions in the bumper, an intake duct is connected to one end of the hollow portion, and an outside air inlet is provided at the other end of the hollow portion. Is formed, and the air that has entered through the inlet is passed through the hollow portion of the bumper and is sucked into the intake duct, so that foreign substances in the intake air are removed when passing through the bumper.
Since the bumper is used, draining can be efficiently performed without increasing the length of the intake duct.
Further, since the blow bumper is formed in a hollow shape, it has the advantages that the rigidity can be increased and the weight can be reduced.
[0008]
In the intake duct structure according to claim 2, a series of hollow portions are formed on the left and right sides of the upper side of the bumper, an air inlet is formed on the left end or the right end of the hollow portion, and an intake duct is provided on the other end of the hollow portion. Since the connection is made, the left and right sides of the bumper can be effectively used to secure a long draining space.
Further, since the drain hole is formed below the bumper, the water in the intake air is drained from here, and there is no possibility that water may enter the engine.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 is a schematic configuration diagram of an intake duct structure, FIG. 2 is a cross-sectional view along AA, and FIG. 3 is a cross-sectional view along BB.
As shown in FIGS. 1 to 3, an intake duct structure according to an embodiment of the present invention mainly includes a bumper 1 mounted in front of a vehicle and an intake duct 3 connected to a hollow portion 2 of the bumper 1. The intake duct 3 is connected to an engine (not shown) via an air cleaner 4.
[0010]
The vehicle of the present embodiment is a micro bus, and the bumper 1 has a wide width and a vertical width corresponding to the vehicle width.
By the way, a front bumper of a vehicle includes a steel bumper formed by press-molding a metal plate, an injection bumper formed by injection-molding a synthetic resin, a hollow blow bumper formed by blow-molding a synthetic resin, and the like, but the present invention uses a blow bumper.
Blow molding is generally a method in which a resin is air blown in a mold to integrally mold a hollow bumper. A hollow portion is formed between the front and back surfaces of the bumper, and a rigid bumper is manufactured.
Since the blow bumper is formed in a hollow shape, the blow bumper has advantages in that rigidity can be increased and weight can be reduced.
[0011]
The bumper 1 has openings such as a lamp hole 5 and an air hole 6 on the left and right, and a resin portion between the openings is hollow. Then, the hollow portion 2 passes right and left along the upper side of the bumper 1, an air inlet 7 is formed on the right rear surface of the hollow portion 2 extending left and right, and an air outlet 8 is formed on the left rear surface of the hollow portion 2. Is formed. The air outlet 8 is connected to the air intake duct 3, and the air that enters from the inlet 7 passes through the upper hollow portion 2 and is sucked into the air intake duct 3.
The hollow portion 2 is continuous in the horizontal direction and also continuous in the vertical direction, and several drain holes 9 are formed at predetermined locations on the lower side of the bumper. Then, water droplets contained in the intake air are discharged from the drain holes.
[0012]
The bumper 1 and the intake duct 3 are respectively fixed to a vehicle body with bolts or the like, and the outlet 8 of the bumper 1 and the entrance of the intake duct 3 are connected in a state of contacting each other. An elastic body 10 such as sponge or rubber is provided at the abutting portion, and the connecting portion between the two is closely attached so that air does not enter.
As described above, since the bumper 1 and the intake duct 3 are not rigidly connected by bolts but are connected with an elastic body interposed therebetween, a dimensional error at the time of mounting is absorbed, and a connection part due to vibration and impact of the vehicle is absorbed. Damage can be prevented.
[0013]
Next, the operation of the present embodiment will be described.
The bumper 1 is blow-molded to integrally form the hollow portion 2, the lamp hole 5, the air hole 6, the inlet 7, the outlet 8, and the like.
The bumper 1 is mounted on the main body of the microbus, and the intake duct 3 extending from the engine below the floor of the microbus is brought into contact with the outlet 8 of the bumper 1 and connected with the elastic body 10 interposed therebetween.
Since the elastic body 10 is interposed, a dimensional error at the time of mounting can be absorbed, and damage to the connection portion due to vibration and impact of the vehicle can be prevented.
By connecting the bumper and the intake duct, air is supplied from the inlet 7 through the hollow portion 2.
When traveling on rainy weather, air is secured from the inlet 7 on the back of the bumper 1, so that rainwater, tire splash and the like are less likely to enter.
Even if a splash or the like that the tire rolls up enters through the inlet 7, it falls down and is discharged from the drain hole 9 when passing through the hollow portion 2 of the bumper 1.
[0014]
The embodiment of the present invention has been described above. However, the specific configuration of the present invention is not limited to the present embodiment, and even if there is a design change or the like within a range not departing from the gist of the present invention, the present invention is not limited thereto. Included in the invention.
For example, the positions of the opening, introduction port, and delivery port of the bumper described in the above embodiment can be arbitrarily set, and the present invention includes any configuration using the hollow portion of the blow-molded bumper.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of an intake duct structure of the present invention.
FIG. 2 is a sectional view taken along the line AA in FIG.
FIG. 3 is a sectional view taken along line BB in FIG. 1;
FIG. 4 is an explanatory view of an intake duct structure according to a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bumper 2 Hollow part 3 Intake duct 4 Air cleaner 5 Lamp hole 6 Air hole 7 Inlet 8 Outlet 9 Drain hole 10 Elastic body

Claims (2)

バンパーに形成された中空部にエンジンの吸気ダクトを接続し、その中空部を通して吸気を行ない、吸気中の水等の異物を除去する吸気ダクト構造であって、
バンパーをブロー成形してバンパーに一連の中空部を形成し、その中空部の一端に吸気ダクトを接続し、その中空部の他端に外気の導入口を形成し、その導入口から入った空気をバンパーの中空部を通過させて吸気ダクトへ吸気させることを特徴とする吸気ダクト構造。
An intake duct structure that connects an intake duct of the engine to a hollow portion formed in the bumper, performs intake through the hollow portion, and removes foreign substances such as water in the intake,
The bumper is blow molded to form a series of hollows in the bumper, an intake duct is connected to one end of the hollow, an outside air inlet is formed at the other end of the hollow, and air entering from the inlet is formed. The intake duct structure is characterized in that the air passes through the hollow part of the bumper and is taken into the intake duct.
バンパー上辺の左右に一連の中空部を形成し、その中空部の左端または右端に空気の導入口を形成し、その中空部の他端に吸気ダクトを接続し、さらに、前記中空部の下側に水抜き孔を形成したことを特徴とする請求項1記載の吸気ダクト構造。A series of hollow portions are formed on the left and right of the upper side of the bumper, an air inlet is formed on the left end or the right end of the hollow portion, an intake duct is connected to the other end of the hollow portion, and further, the lower side of the hollow portion 2. The intake duct structure according to claim 1, wherein a drain hole is formed in the intake duct.
JP2002295058A 2002-10-08 2002-10-08 Air intake duct structure Expired - Lifetime JP4066767B2 (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
JP2002295058A JP4066767B2 (en) 2002-10-08 2002-10-08 Air intake duct structure

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JP4066767B2 JP4066767B2 (en) 2008-03-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102555782A (en) * 2010-10-07 2012-07-11 通用汽车环球科技运作有限责任公司 Intake system of combustion air of a vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102555782A (en) * 2010-10-07 2012-07-11 通用汽车环球科技运作有限责任公司 Intake system of combustion air of a vehicle

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