JP4731452B2 - Silencer - Google Patents

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JP4731452B2
JP4731452B2 JP2006320433A JP2006320433A JP4731452B2 JP 4731452 B2 JP4731452 B2 JP 4731452B2 JP 2006320433 A JP2006320433 A JP 2006320433A JP 2006320433 A JP2006320433 A JP 2006320433A JP 4731452 B2 JP4731452 B2 JP 4731452B2
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wall
piece
silencer
communication pipe
bottomed cylindrical
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JP2008133771A (en
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明宏 大崎
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Kojima Industries Corp
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Description

本発明は、車両の吸気ダクトに設けられる消音装置に関する。   The present invention relates to a silencer provided in an intake duct of a vehicle.

実開平6−53756号公報は、ヘルムホルツタイプ消音器の共鳴室内にサイドブランチタイプ消音器を突出させた消音装置を開示している。ヘルムホルツタイプ消音器の連通部を構成する連通管と、ヘルムホルツタイプ消音器の共鳴室を構成する箱状の中空成形体と、サイドブランチタイプ消音器を構成する有底筒状壁とは、それぞれ別体に形成されている。   Japanese Utility Model Publication No. 6-53756 discloses a silencer in which a side branch type silencer is protruded into a resonance chamber of a Helmholtz type silencer. The communication pipe that forms the communication part of the Helmholtz type silencer, the box-shaped hollow molded body that constitutes the resonance chamber of the Helmholtz type silencer, and the bottomed cylindrical wall that constitutes the side branch type silencer are different from each other. Formed in the body.

しかし、上記公報開示の消音装置には、つぎの問題点がある。
ヘルムホルツタイプ消音器にて消音する周波数(ターゲット周波数)を変更する場合、連通管の形状(長さ、径)、中空成形体の形状のいずれか少なくとも1つを変えなければならない。また、サイドブランチタイプ消音器にて消音する周波数(ターゲット周波数)を変更する場合、有底筒状壁の形状(長さ、径)を変えなければならない。
そのため、ヘルムホルツタイプ消音器とサイドブランチタイプ消音器の両方のターゲット周波数を変更するためには、少なくとも2つ以上の金型を新設しなければならず、コスト上不利である。
実開平6−53756号公報
However, the silencer disclosed in the above publication has the following problems.
When changing the frequency (target frequency) to be silenced by the Helmholtz type silencer, at least one of the shape (length, diameter) of the communication tube and the shape of the hollow molded body must be changed. Moreover, when changing the frequency (target frequency) to be silenced by the side branch type silencer, the shape (length, diameter) of the bottomed cylindrical wall must be changed.
Therefore, in order to change the target frequency of both the Helmholtz type silencer and the side branch type silencer, at least two molds must be newly installed, which is disadvantageous in terms of cost.
Japanese Utility Model Publication No. 6-53756

本発明の目的は、1つの金型を新設することでヘルムホルツタイプ消音器とサイドブランチタイプ消音器の両方のターゲット周波数を変更できる消音装置を提供することにある。   An object of the present invention is to provide a silencer capable of changing the target frequencies of both a Helmholtz type silencer and a side branch type silencer by newly installing one mold.

上記目的を達成する本発明はつぎの通りである。
(1) (a)吸気ダクトの一部を形成する吸気ダクト形成壁と大気と遮断する遮断壁とで囲まれる空間からなる共鳴室と、前記吸気ダクト内と前記共鳴室とを連通させる連通管を前記吸気ダクト形成壁から前記共鳴室内に延びて設けることで構成される連通部と、を備えるヘルムホルツタイプ消音器と、
(b)前記吸気ダクト形成壁から前記共鳴室内に突出する有底筒状壁にて構成されるサイドブランチタイプ消音器と、
を有し、別々に形成されて一体にされる第1、第2、第3のピースで構成される消音装置であって、
前記第1のピースに、前記給気ダクト形成壁と、前記遮断壁の一部と、前記連通管の一部もしくは全部と、前記有底筒状壁の一部が形成されており、
前記第2のピースに、前記第1のピースに前記連通管の一部が形成されている場合には該連通管の残余の部分と、前記遮断壁の一部とは異なるさらなる一部と、前記有底筒状壁の残余の部分が、前記第1のピースに前記連通管の全部が形成されている場合には前記遮断壁の一部とは異なるさらなる一部と、前記有底筒状壁の残余の部分が形成されており、
前記第3のピースに、前記遮断壁の残余の部分が形成されている、消音装置。
The present invention for achieving the above object is as follows.
(1) (a) A resonance chamber composed of a space surrounded by an intake duct forming wall that forms a part of the intake duct and a blocking wall that blocks the atmosphere, and a communication pipe that connects the inside of the intake duct and the resonance chamber A Helmholtz type silencer comprising: a communication portion configured to extend from the intake duct forming wall into the resonance chamber; and
(B) a side branch type silencer configured by a bottomed cylindrical wall protruding from the intake duct forming wall into the resonance chamber;
A silencer composed of first, second, and third pieces that are separately formed and united,
In the first piece, the air supply duct forming wall, a part of the blocking wall, a part or all of the communication pipe, and a part of the bottomed cylindrical wall are formed,
In the second piece, when a part of the communication pipe is formed in the first piece, a remaining part of the communication pipe and a further part different from a part of the blocking wall; The remaining portion of the bottomed cylindrical wall is a part of the bottomed cylindrical shape that is different from a part of the blocking wall when the communication piece is entirely formed on the first piece. the remainder of the wall, are formed,
The silencer, wherein the remaining part of the blocking wall is formed on the third piece.

上記(1)の消音装置によれば、第1のピースに、吸気ダクト形成壁と、遮断壁の一部と、連通管の一部もしくは全部と、有底筒状壁の一部が形成されており、第2のピースに、第1のピースに連通管の一部が形成されている場合には連通管の残余の部分と、遮断壁の一部とは異なるさらなる一部と、有底筒状壁の残余の部分が、第1のピースに連通管の全部が形成されている場合には遮断壁の一部とは異なるさらなる一部と、有底筒状壁の残余の部分が形成されており、第3のピースに、遮断壁の残余の部分が形成されている。そのため、第2のピースに形成される連通管および有底筒状壁の残余の部分の長さを変更することで、連通管の長さと有底筒状壁の長さを変更することができ、ヘルムホルツタイプ消音器とサイドブランチタイプ消音器の両方のターゲット周波数を変更することができる。したがって、1つの金型を新設することで(第2のピース成形用の金型のみを新設することで)、ヘルムホルツタイプ消音器とサイドブランチタイプ消音器の両方のターゲット周波数を変更できる。
According to the silencer of (1) above, the first piece is formed with the intake duct forming wall, a part of the blocking wall, a part or all of the communication pipe, and a part of the bottomed cylindrical wall. in which, the second piece, and different additional part and remaining part of the communication pipe, a part of the blocking wall in the case where a part of the communicating pipe is formed on the first piece, a bottom If the remaining part of the cylindrical wall is formed in the first piece with the entire communication pipe, a further part different from the part of the blocking wall, and the remaining part of the bottomed cylindrical wall , The remaining part of the blocking wall is formed on the third piece. Therefore, the length of the communication pipe and the length of the bottomed cylindrical wall can be changed by changing the length of the remaining part of the communication pipe and the bottomed cylindrical wall formed in the second piece. The target frequency of both the Helmholtz type silencer and the side branch type silencer can be changed. Therefore, by newly installing one mold (by newly providing only the second piece molding mold), it is possible to change the target frequencies of both the Helmholtz type silencer and the side branch type silencer.

図1〜図4は、本発明実施例の消音装置を示している。
本発明実施例の消音装置10は、図2に示すように、自動車用内燃機関への吸気ダクト40に設けられている。吸気ダクト40は、自動車用内燃機関の吸気流れ方向上流に配置されるダクト(ホース)である。吸気ダクト40は、図示略のエアクリーナの上流側のダクトであってもよく、図示略のエアクリーナの下流側のダクトであってもよい。
消音装置10は、ヘルムホルツタイプ消音器20と、サイドブランチタイプ消音器30と、を有する。
1 to 4 show a silencer of an embodiment of the present invention.
As shown in FIG. 2, the silencer 10 of the embodiment of the present invention is provided in an intake duct 40 for an automobile internal combustion engine. The intake duct 40 is a duct (hose) disposed upstream of the internal combustion engine for automobiles in the intake flow direction. The intake duct 40 may be a duct on the upstream side of an air cleaner (not shown) or a duct on the downstream side of an air cleaner (not shown).
The silencer 10 includes a Helmholtz type silencer 20 and a side branch type silencer 30.

ヘルムホルツタイプ消音器20は、共鳴室20aと、連通部20bと、を備える。
共鳴室20aは、吸気ダクト40の一部を形成する吸気ダクト形成壁21と、大気と遮断する遮断壁22とで囲まれる空間からなる。
連通部20bは、吸気ダクト40内と共鳴室20aとを連通させる連通管23を吸気ダクト形成壁21から共鳴室20a内に延びて設けることで構成される。連通部20bは、連通管23の内側に位置する部分である。連通管23は、吸気ダクト40内を流れる吸気の流れ方向と直交する方向に、直線状または略直線状に延びている。
The Helmholtz type silencer 20 includes a resonance chamber 20a and a communication portion 20b.
The resonance chamber 20a includes a space surrounded by an intake duct forming wall 21 that forms a part of the intake duct 40 and a blocking wall 22 that blocks the atmosphere.
The communication portion 20b is configured by providing a communication pipe 23 that allows the inside of the intake duct 40 and the resonance chamber 20a to extend from the intake duct forming wall 21 into the resonance chamber 20a. The communication part 20 b is a part located inside the communication pipe 23. The communication pipe 23 extends linearly or substantially linearly in a direction orthogonal to the flow direction of the intake air flowing through the intake duct 40.

サイドブランチタイプ消音器30は、吸気ダクト形成壁21から共鳴室20a内に突出する有底筒状壁31にて構成される。有低筒状壁31は、吸気ダクト形成壁21から共鳴室20a内に、吸気ダクト40内を流れる吸気の流れ方向と直交する方向またはほぼ直交する方向に直線状または略直線状に突出している。有底筒状壁31は、吸気ダクト40内を流れる吸気の流れ方向で連通管23が設けられる部位とは異なる部位に設けられている。有底筒状壁31と遮断壁22との間には空間があり、有底筒状壁31は遮断壁22に非接触とされている。有底筒状壁31の内径と連通管23の内径とは同じであってもよく、異なっていてもよい。   The side branch type silencer 30 includes a bottomed cylindrical wall 31 protruding from the intake duct forming wall 21 into the resonance chamber 20a. The low-cylindrical wall 31 projects linearly or substantially linearly from the intake duct forming wall 21 into the resonance chamber 20a in a direction perpendicular to or substantially perpendicular to the flow direction of the intake air flowing through the intake duct 40. . The bottomed cylindrical wall 31 is provided at a site different from the site where the communication pipe 23 is provided in the flow direction of the intake air flowing through the intake duct 40. There is a space between the bottomed cylindrical wall 31 and the blocking wall 22, and the bottomed cylindrical wall 31 is not in contact with the blocking wall 22. The inner diameter of the bottomed cylindrical wall 31 and the inner diameter of the communication pipe 23 may be the same or different.

消音装置10は、図1に示すように、それぞれ別々に形成されて一体にされる第1〜第3のピース11,12,13を備えている。
第1のピース11には、吸気ダクト形成壁21と、遮断壁22の一部22aと、連通管23の少なくとも一部23aと、有底筒状壁31の一部31aとが、形成されている。
第2のピース12には、遮断壁22の前記一部22aとは異なるさらなる一部22bと、第1のピース11に連通管23の一部のみが形成されている場合には連通管23の残余の部分23bと、有底筒状壁31の前記一部31a以外の残余の部分31bとが、形成されている。遮断壁22の前記一部22aとは異なるさらなる一部22bと、連通管23の残余の部分23bおよび有底筒状壁31の残余の部分31bとの間には、図示略のリブが設けられている。
第3のピース13には、遮断壁22の前記一部22a、22b以外の残余の部分22cが形成されている。
As shown in FIG. 1, the silencer 10 includes first to third pieces 11, 12, and 13 that are separately formed and integrated.
The first piece 11 is formed with an intake duct forming wall 21, a part 22 a of the blocking wall 22, at least a part 23 a of the communication pipe 23, and a part 31 a of the bottomed cylindrical wall 31. Yes.
The second piece 12 has a further part 22b different from the part 22a of the blocking wall 22 and a part of the communication pipe 23 in the first piece 11 when only a part of the communication pipe 23 is formed. A remaining portion 23b and a remaining portion 31b other than the portion 31a of the bottomed cylindrical wall 31 are formed. A rib (not shown) is provided between a further portion 22b of the blocking wall 22 different from the portion 22a and the remaining portion 23b of the communication pipe 23 and the remaining portion 31b of the bottomed cylindrical wall 31. ing.
In the third piece 13, a remaining portion 22 c other than the portions 22 a and 22 b of the blocking wall 22 is formed.

ここで、本発明実施例の消音装置10の製造方法を説明する。
消音層10の製造方法は、
(i) 第1のピース11を図示略の金型内にセットした状態で吸気ダクト40を3次元ブロー成形することで、第1のピース11と吸気ダクト40を固定する(第1のピース11を吸気ダクト40にインサート成形する)工程と、
(ii) 第2のピース12を接着または溶着等により第1のピース11に固定する工程と、
(iii) 第3のピース13を接着または溶着等により第2のピース12に固定する工程と、
を有する。
Here, the manufacturing method of the silencer 10 of the embodiment of the present invention will be described.
The manufacturing method of the sound deadening layer 10 is
(I) The first piece 11 and the intake duct 40 are fixed by performing three-dimensional blow molding of the intake duct 40 in a state where the first piece 11 is set in a mold (not shown) (the first piece 11 Insert molding into the intake duct 40),
(Ii) fixing the second piece 12 to the first piece 11 by bonding or welding,
(Iii) fixing the third piece 13 to the second piece 12 by bonding or welding,
Have

つぎに、本発明実施例の消音装置10の作用を説明する。
第1のピース11に、吸気ダクト形成壁21と、遮断壁22の一部22aと、連通管23の少なくとも一部23aと、有底筒状壁31の一部31aが形成されており、第2のピース12に、遮断壁22の一部22aとは異なるさらなる一部22bと、第1のピース11に連通管23の一部のみが形成されている場合には連通管23の残余の部分23bと、有底筒状壁31の残余の部分31bが形成されており、第3のピース13に、遮断壁22の残余の部分22cが形成されている。そのため、図2および図3に示すように、第2のピース12に形成される連通管23および有底筒状壁31の残余の部分23b、31bの長さを変更することで、連通管23の長さと有底筒状壁31の長さを変更することができ、ヘルムホルツタイプ消音器20にて消音する周波数(ターゲット周波数)とサイドブランチタイプ消音器30にて消音する周波数(ターゲット周波数)を変更することができる。したがって、1つの金型を新設することで(第1、第3のピース11,13成形用の金型を新設することなく、第2のピース12成形用の金型のみを新設することで)、ヘルムホルツタイプ消音器20とサイドブランチタイプ消音器30の両方のターゲット周波数を変更でき、従来に比べてコスト上有利である。
Next, the operation of the silencer 10 of the embodiment of the present invention will be described.
The first piece 11 is formed with an intake duct forming wall 21, a part 22 a of the blocking wall 22, at least a part 23 a of the communication pipe 23, and a part 31 a of the bottomed cylindrical wall 31, When the second piece 12 is formed with only a further part 22b different from the part 22a of the blocking wall 22 and a part of the communication pipe 23 on the first piece 11, the remaining part of the communication pipe 23 23 b and the remaining portion 31 b of the bottomed cylindrical wall 31 are formed, and the remaining portion 22 c of the blocking wall 22 is formed in the third piece 13. Therefore, as shown in FIGS. 2 and 3, the communication pipe 23 is formed by changing the lengths of the communication pipe 23 formed in the second piece 12 and the remaining portions 23 b and 31 b of the bottomed cylindrical wall 31. The length of the cylindrical wall 31 and the length of the bottomed cylindrical wall 31 can be changed. The frequency (target frequency) to be silenced by the Helmholtz type silencer 20 and the frequency (target frequency) to be silenced by the side branch type silencer 30 are set. Can be changed. Therefore, by newly installing one mold (without newly installing molds for molding the first and third pieces 11 and 13, only by installing a mold for molding the second piece 12) The target frequencies of both the Helmholtz type silencer 20 and the side branch type silencer 30 can be changed, which is advantageous in terms of cost as compared with the prior art.

また、図2および図4に示すように、第2のピース12に形成される連通管23および有底筒状壁31の残余の部分23b、31bのレイアウト(位置)を入れ替えることで、連通管23と有底筒状壁31のレイアウト(位置)を変更することができ、ヘルムホルツタイプ消音器20とサイドブランチタイプ消音器30のターゲット周波数を変更することができる。   Further, as shown in FIGS. 2 and 4, the communication pipe 23 formed in the second piece 12 and the layout (position) of the remaining portions 23 b and 31 b of the bottomed cylindrical wall 31 are interchanged, so that the communication pipe 23 and the bottomed cylindrical wall 31 can be changed in layout (position), and the target frequencies of the Helmholtz type silencer 20 and the side branch type silencer 30 can be changed.

本発明実施例の消音装置の分解斜視図である。It is an exploded perspective view of a silencer of an example of the present invention. 本発明実施例の消音装置の断面図である。It is sectional drawing of the silencer of an Example of this invention. 本発明実施例の消音装置の、第2のピースに形成される連通管の残余の部分および有底筒状壁の残余の部分が図2の場合に比べて短い場合の、第2のピースの断面図である。In the silencer according to the embodiment of the present invention, the remaining part of the communication pipe formed in the second piece and the remaining part of the bottomed cylindrical wall are shorter than those in FIG. It is sectional drawing. 本発明実施例の消音装置の、第2のピースに形成される連通管の残余の部分と有底筒状壁の残余の部分のレイアウトを、図2の場合と異ならせた場合(入れ替えた場合)の、第2のピースの断面図である。When the layout of the remaining part of the communication pipe formed in the second piece and the remaining part of the bottomed cylindrical wall of the silencer of the embodiment of the present invention is different from the case of FIG. ) Is a cross-sectional view of the second piece.

符号の説明Explanation of symbols

10 消音装置
11 第1のピース
12 第2のピース
13 第3のピース
20 ヘルムホルツタイプ消音器
20a 共鳴室
20b 連通部
21 吸気ダクト形成壁
22 遮断壁
23 連通管
30 サイドブランチタイプ消音器
31 有低筒状壁
40 吸気ダクト
DESCRIPTION OF SYMBOLS 10 Silencer 11 1st piece 12 2nd piece 13 3rd piece 20 Helmholtz type silencer 20a Resonance chamber 20b Communication part 21 Intake duct formation wall 22 Blocking wall 23 Communication pipe 30 Side branch type silencer 31 Low cylinder Shaped wall 40 Intake duct

Claims (1)

(a)吸気ダクトの一部を形成する吸気ダクト形成壁と大気と遮断する遮断壁とで囲まれる空間からなる共鳴室と、前記吸気ダクト内と前記共鳴室とを連通させる連通管を前記吸気ダクト形成壁から前記共鳴室内に延びて設けることで構成される連通部と、を備えるヘルムホルツタイプ消音器と、
(b)前記吸気ダクト形成壁から前記共鳴室内に突出する有底筒状壁にて構成されるサイドブランチタイプ消音器と、
を有し、別々に形成されて一体にされる第1、第2、第3のピースで構成される消音装置であって、
前記第1のピースに、前記給気ダクト形成壁と、前記遮断壁の一部と、前記連通管の一部もしくは全部と、前記有底筒状壁の一部が形成されており、
前記第2のピースに、前記第1のピースに前記連通管の一部が形成されている場合には該連通管の残余の部分と、前記遮断壁の一部とは異なるさらなる一部と、前記有底筒状壁の残余の部分が、前記第1のピースに前記連通管の全部が形成されている場合には前記遮断壁の一部とは異なるさらなる一部と、前記有底筒状壁の残余の部分が形成されており、
前記第3のピースに、前記遮断壁の残余の部分が形成されている、消音装置。
(A) A resonance chamber composed of a space surrounded by an intake duct forming wall that forms a part of the intake duct and a blocking wall that blocks the atmosphere, and a communication pipe that communicates the inside of the intake duct and the resonance chamber with the intake air. A Helmholtz type silencer comprising: a communicating portion configured to extend from a duct forming wall into the resonance chamber; and
(B) a side branch type silencer configured by a bottomed cylindrical wall protruding from the intake duct forming wall into the resonance chamber;
A silencer composed of first, second, and third pieces that are separately formed and united,
In the first piece, the air supply duct forming wall, a part of the blocking wall, a part or all of the communication pipe, and a part of the bottomed cylindrical wall are formed,
In the second piece, when a part of the communication pipe is formed in the first piece, a remaining part of the communication pipe and a further part different from a part of the blocking wall; The remaining portion of the bottomed cylindrical wall is a part of the bottomed cylindrical shape that is different from a part of the blocking wall when the communication piece is entirely formed on the first piece. the remainder of the wall, are formed,
The silencer, wherein the remaining part of the blocking wall is formed on the third piece.
JP2006320433A 2006-11-28 2006-11-28 Silencer Expired - Fee Related JP4731452B2 (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4722875B2 (en) * 2007-04-13 2011-07-13 トヨタ車体株式会社 Air intake silencer
JP5830854B2 (en) * 2010-12-17 2015-12-09 スズキ株式会社 Intake device for vehicle engine
JP2018080685A (en) 2016-11-18 2018-05-24 株式会社Roki Silencer

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JPH0250166U (en) * 1988-09-30 1990-04-09
JPH0653756U (en) * 1992-12-25 1994-07-22 ダイハツ工業株式会社 Air intake duct noise absorber
JPH11294278A (en) * 1998-04-13 1999-10-26 Honda Motor Co Ltd Intake air silencer
JP2004301022A (en) * 2003-03-31 2004-10-28 Suzuki Motor Corp Suction manifold of internal combustion engine
JP2004308604A (en) * 2003-04-09 2004-11-04 Aisan Ind Co Ltd Resin-made intake manifold

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JPH0575469U (en) * 1992-03-19 1993-10-15 豊田合成株式会社 Resonator
DE102004038216A1 (en) * 2004-08-05 2006-03-16 Mann+Hummel Gmbh intake silencer

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Publication number Priority date Publication date Assignee Title
JPH0250166U (en) * 1988-09-30 1990-04-09
JPH0653756U (en) * 1992-12-25 1994-07-22 ダイハツ工業株式会社 Air intake duct noise absorber
JPH11294278A (en) * 1998-04-13 1999-10-26 Honda Motor Co Ltd Intake air silencer
JP2004301022A (en) * 2003-03-31 2004-10-28 Suzuki Motor Corp Suction manifold of internal combustion engine
JP2004308604A (en) * 2003-04-09 2004-11-04 Aisan Ind Co Ltd Resin-made intake manifold

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