JP2012036808A

JP2012036808A - Duct

Info

Publication number: JP2012036808A
Application number: JP2010177263A
Authority: JP
Inventors: Akihiro Osaki; 明宏大崎; Hiroaki Kobayashi; 裕明小林
Original assignee: Kojima Press Industry Co Ltd
Current assignee: Kojima Industries Corp
Priority date: 2010-08-06
Filing date: 2010-08-06
Publication date: 2012-02-23

Abstract

PROBLEM TO BE SOLVED: To provide a duct which can suppress generation of noise and vibration without deteriorating pressure loss performance.SOLUTION: In the duct 1 mounted on a vehicle and having a straightening rib 2 in the inside, the duct 1 is constituted of a first half duct 1a and a second half duct 1b divided. A first straightening rib 2a and a second straightening rib 2b are erected from the inner wall of the first half duct 1a and the second half duct 1b respectively, and the first half duct 1a and the second half duct 1b are joined while the first straightening rib 2a and the second straightening rib 2b are butted.

Description

本発明は、ダクトに関する。詳しくは、吸気また排気による圧力損失を低減させるために、内部に整流リブが立設された自動車の吸気ダクトまたは排気ダクトに関する。 The present invention relates to a duct. Specifically, the present invention relates to an intake duct or an exhaust duct of an automobile in which a rectifying rib is erected in order to reduce pressure loss due to intake or exhaust.

この種のダクトの構造は、図４に示すように、ダクト１１を第１の半割ダクト１１ａ、第２の半割ダクト１１ｂに２分割し、第１の半割ダクト１１ａから流体の整流を向上させる整流リブ１２を立設し、第２の半割ダクト１１ｂの内壁に当接させ、両半割ダクト１１ａおよび１１ｂを接合することが考えられる。 As shown in FIG. 4, this type of duct has a structure in which the duct 11 is divided into a first half duct 11a and a second half duct 11b, and fluid is rectified from the first half duct 11a. It is conceivable that the rectifying rib 12 to be improved is erected and brought into contact with the inner wall of the second half duct 11b to join both the half ducts 11a and 11b.

特開２００１−２８０３１１号公報JP 2001-280311 A

しかし、前記した構造では、整流リブと第２の半割ダクトの内壁が干渉して異音や振動が発生することが考えられる。これを抑制するために、整流リブと他方のダクトの内壁との間にクリアランスを設けると、一方および他方のダクトに剛性が不足している場合、例えば吸気負圧で接合した一方および他方のダクトが潰れてしまい、ダクトの通気断面積が小さくなり、圧力損失が悪化する問題が発生する。 However, in the above-described structure, it is considered that noise and vibration are generated due to interference between the rectifying rib and the inner wall of the second half duct. In order to suppress this, if a clearance is provided between the rectifying rib and the inner wall of the other duct, if one and the other duct have insufficient rigidity, for example, the one and the other duct joined with negative intake pressure Will collapse, the ventilation cross-sectional area of the duct will be reduced, and the problem of worsening pressure loss will occur.

本発明は、このような課題を解決しようとするもので、その目的は、圧力損失性能を悪化させずに、異音、振動の発生の抑制を図ることである。 The present invention is intended to solve such problems, and an object thereof is to suppress the generation of abnormal noise and vibration without deteriorating the pressure loss performance.

本発明は、上記の目的を達成するためのもので、以下のように構成されている。
内部に整流リブを有する車両に搭載されるダクトにおいて、該ダクトは、分割された第1の半割ダクトと第２の半割ダクトから構成され、該第１の半割ダクトと第２の半割ダクトの内壁より夫々第１の整流リブと第２の整流リブが立設され、該第１の整流リブと第２の整流リブを付き合わせた状態で、前記第１の半割ダクトと第２のダクトを接合することを特徴とするダクトとした。 The present invention is for achieving the above object, and is configured as follows.
In a duct mounted on a vehicle having a rectifying rib inside, the duct is composed of a divided first half duct and a second half duct, and the first half duct and the second half duct. A first rectifying rib and a second rectifying rib are erected from the inner wall of the split duct, respectively, and the first halved duct and the second rectifying rib It was set as the duct characterized by joining 2 ducts.

これにより、圧力損失性能を悪化させずに、異音、振動の発生の抑制できるダクトが得られる。 Thereby, the duct which can suppress generation | occurrence | production of abnormal noise and a vibration, without deteriorating pressure loss performance is obtained.

本発明のダクトを示す斜視図。The perspective view which shows the duct of this invention. 図１に示したダクトのＡ−Ａ断面図。FIG. 2 is a cross-sectional view of the duct shown in FIG. 図１に示したダクトのＢ−Ｂ断面図。BB sectional drawing of the duct shown in FIG. 従来のダクトの断面図Cross section of a conventional duct

以下、本発明を実施するための形態を、図面を用いて説明する。
１は自動車のエンジンの吸気ダクトであり、吸気マニホールドに接続される出口部２とエアクリーナーに接続される入口部３を備えている。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Reference numeral 1 denotes an intake duct of an automobile engine, which includes an outlet portion 2 connected to an intake manifold and an inlet portion 3 connected to an air cleaner.

１は、吸気ダクト１を構成するダクト１であり、ダクト１は、第１の半割ダクト１ａと第２の半割ダクト１ｂから構成されている。第１の半割ダクト１ａと第２の半割ダクト１ｂは、樹脂製で射出成形により成形される。 Reference numeral 1 denotes a duct 1 that constitutes an intake duct 1, and the duct 1 includes a first half duct 1a and a second half duct 1b. The first half duct 1a and the second half duct 1b are made of resin and formed by injection molding.

２は、吸気ダクト１の圧力損失性能の向上を狙って設置された整流リブである。整流リブ２は、第１の半割ダクト１ａの内壁に一体に立設された第１の整流リブ１と、第２の半割ダクト１ｂに立設された第２の整流リブ２ｂとから構成されている。 Reference numeral 2 denotes a rectifying rib installed for the purpose of improving the pressure loss performance of the intake duct 1. The rectifying rib 2 includes a first rectifying rib 1 that is integrally provided on the inner wall of the first half duct 1a, and a second rectifying rib 2b that is provided on the second half duct 1b. Has been.

次に吸気ダクト１の組み付けについて説明する。
吸気ダクト１は、第１の整流リブ２ａと第２の整流リブ２ｂを突き合わせた状態で、第１の半割ダクト１ａと第２の半割ダクト１ｂを、バイブレーション溶着、熱板溶着等により接合される。この際、第１の整流リブ２ａと第２の整流リブ２ｂは互いに接合されてもよいし、接合されず単に突き合わせただけでもよい。 Next, assembly of the intake duct 1 will be described.
In the intake duct 1, the first rectifying rib 2a and the second rectifying rib 2b are in contact with each other, and the first half duct 1a and the second half duct 1b are joined by vibration welding, hot plate welding, or the like. Is done. At this time, the first rectifying rib 2a and the second rectifying rib 2b may be joined to each other, or may be merely abutted without being joined.

本発明はこのように構成されているため、第１の整流リブ２ａと第２の整流リブ２ｂの間にはクリアランスがないため、異音、振動の発生が十分抑制できる。また、第１の整流リブ２ａと第２の整流リブ２ｂを突き合わせているため、十分な剛性が確保でき、吸気負圧で接合した一方および／または他方のダクトが潰れて、ダクトの通気断面積が小さくなり、圧力損失性能を悪化させることが効果的に抑制できる。 Since this invention is comprised in this way, since there is no clearance between the 1st rectification rib 2a and the 2nd rectification rib 2b, generation | occurrence | production of abnormal noise and a vibration can fully be suppressed. Further, since the first rectifying rib 2a and the second rectifying rib 2b are abutted with each other, sufficient rigidity can be secured, and one and / or the other duct joined by the intake negative pressure is crushed, and the ventilation sectional area of the duct is reduced. Can be effectively suppressed from deteriorating the pressure loss performance.

以上、本発明について説明したが、本発明は前記の実施形態に限定されて解釈されるものではない。
例えば、本発明に係わるダクトは、吸気ダクトだけではなく、排気ダクトに用いてもよい。 As mentioned above, although this invention was demonstrated, this invention is limited to the said embodiment and is not interpreted.
For example, the duct according to the present invention may be used not only as an intake duct but also as an exhaust duct.

１，１１吸気ダクト（ダクト）
１ａ，１１ａ第１の半割ダクト
１ｂ、１１ｂ第２の半割ダクト
２，１２整流リブ
２ａ第１の整流リブ
２ｂ第２の整流リブ
1,11 Air intake duct (duct)
DESCRIPTION OF SYMBOLS 1a, 11a 1st half duct 1b, 11b 2nd half duct 2,12 Current flow rib 2a First current flow rib 2b 2nd current flow rib

Claims

In a duct mounted on a vehicle having a rectifying rib inside,
The duct is composed of a divided first half duct and a second half duct,
A first rectifying rib and a second rectifying rib are erected from the inner walls of the first half duct and the second half duct,
A duct characterized by joining the first half duct and the second duct in a state where the first rectifying rib and the second rectifying rib are attached together.