JP2010265851A - Resonator - Google Patents

Resonator Download PDF

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Publication number
JP2010265851A
JP2010265851A JP2009119422A JP2009119422A JP2010265851A JP 2010265851 A JP2010265851 A JP 2010265851A JP 2009119422 A JP2009119422 A JP 2009119422A JP 2009119422 A JP2009119422 A JP 2009119422A JP 2010265851 A JP2010265851 A JP 2010265851A
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Prior art keywords
gas flow
case
sound
flow passage
resonator
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JP2009119422A
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Japanese (ja)
Inventor
Hirokimi Ishikawa
洋公 石川
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Kojima Industries Corp
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Kojima Press Industry Co Ltd
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Priority to JP2009119422A priority Critical patent/JP2010265851A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a resonator capable of effectively attenuating radiant sound and intake noise in a compact configuration. <P>SOLUTION: The resonator includes a pipe 2 having a gas flow passage 20, a case 3 having a sound absorbing chamber 30 formed integrally with the pipe 2 communicating with the gas flow passage 20, at least one hole 5 formed in the case 3, and a film member 4 for separation between the gas flow passage 20 and the case 3, or between the space in the gas flow passage 20 side in the case 3 and at least part of the space in the sound absorbing chamber 30. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

本発明は、騒音の低減を行うレゾネータに関する。 The present invention relates to a resonator that reduces noise.

広いスペースを必要とせず、電気的エネルギーを使用せず、簡単な仕組みで吸気管などの通路を通る騒音を減衰することのできるレゾネータとして、特開２００７−２３１８８２号公報に開示されたものがある。
特開２００７−２３１８８２号公報 As a resonator that does not require a large space, does not use electrical energy, and can attenuate noise passing through a passage such as an intake pipe with a simple mechanism, there is one disclosed in Japanese Patent Application Laid-Open No. 2007-231882. .
JP 2007-231882 A

上述した特許文献１の発明では、吸音部材を設けると、膜部材の振動音や吸気音のうち膜部材を透過する音（以下、放射音という）は減衰されるが、出口側から発生する吸気音が減衰し難くなるという問題が発生する。
吸音部材を大型化すると、前記の問題は解決されるが、吸音部材のエンジンルーム内のスペースを確保しなければならず、搭載上不利となることがある。 In the invention of Patent Document 1 described above, when the sound absorbing member is provided, the sound transmitted through the membrane member (hereinafter referred to as radiated sound) among the vibration sound and intake sound of the membrane member is attenuated, but the intake air generated from the outlet side There arises a problem that the sound is difficult to attenuate.
Increasing the size of the sound absorbing member solves the above problem, but it is necessary to secure a space in the engine room of the sound absorbing member, which may be disadvantageous for mounting.

本発明は、コンパクトな構成でありながら、放射音と吸気音を効果的に減衰できるレゾネータを提供することにある。   An object of the present invention is to provide a resonator capable of effectively attenuating radiated sound and intake sound while having a compact configuration.

本発明のレゾネータは、上記の目的を達成するためのものであって、以下のように構成されている。
請求項１に記載の発明は、気体流通路を持つパイプ部材と、該パイプ部材に一体的に形成され該気体流通路と連通する吸音室を持つケースと、該ケースに穿孔された少なくとも1つの孔と、前記気体流通路と前記吸音室の間または前記吸音室に設けられた前記気体流通路側の空間と該吸音室の少なくとも一部の空間とを分ける膜部材と、を具備することを特徴とする。 The resonator of the present invention is for achieving the above object, and is configured as follows.
The invention according to claim 1 is a pipe member having a gas flow passage, a case having a sound absorbing chamber integrally formed with the pipe member and communicating with the gas flow passage, and at least one of holes formed in the case. And a membrane member that divides a space between the gas flow passage and the sound absorption chamber or the gas flow passage side provided in the sound absorption chamber and at least a part of the sound absorption chamber. And

この構成によれば、ケースに１つ以上の孔が穿孔されているため、放射音の減衰効果は孔が穿孔されていないものに比べて劣るが、吸気通路から出てくる吸気音を孔が穿孔されていないものに比べて効果的に減衰することができる。放射音と吸気音の減衰したい周波数により、ケースに穿孔される孔の径や数を調整することにより、コンパクトな構成であっても、放射音と吸気音を効果的に低減できるレゾネータを提供することが可能となる。 According to this configuration, since one or more holes are perforated in the case, the attenuation effect of the radiated sound is inferior to that of the case where the holes are not perforated. Attenuation can be effectively performed as compared with a case where the hole is not perforated. Providing a resonator that can effectively reduce radiated sound and intake sound even in a compact configuration by adjusting the diameter and number of holes drilled in the case according to the frequency at which the radiated sound and intake sound are to be attenuated It becomes possible.

図１は、本発明に係るレゾネータの概略図である。FIG. 1 is a schematic view of a resonator according to the present invention.

以下、本発明を具体的に説明する。   The present invention will be specifically described below.

図１は、本発明のレゾネータの概略図である。レゾネータ１は、気体流通路２０を有するパイプ部材２と、吸音室３０を有するケースと、膜部材４と、ケース３の上面に穿孔された複数の孔５とからなる。パイプ部材２は、一般的に樹脂製であること望ましいが、それに限定されず金属性でも良い。 FIG. 1 is a schematic view of a resonator according to the present invention. The resonator 1 includes a pipe member 2 having a gas flow passage 20, a case having a sound absorbing chamber 30, a membrane member 4, and a plurality of holes 5 drilled in the upper surface of the case 3. The pipe member 2 is generally desirably made of resin, but is not limited thereto and may be metallic.

ケース３は、パイプ部材２に一体的に形成され、吸気部材３の吸音室３０が気体流通路２０と開口３１を介して連通している。ケース３の上面には複数の孔５が穿孔されている。ケース３は、一般的に樹脂製であること望ましいが、それに限定されず金属性でも良い。 The case 3 is formed integrally with the pipe member 2, and the sound absorbing chamber 30 of the intake member 3 communicates with the gas flow passage 20 through the opening 31. A plurality of holes 5 are perforated on the upper surface of the case 3. The case 3 is generally preferably made of resin, but is not limited thereto and may be metallic.

膜部材４は、気体流通路２０と吸音室３０との間、開口３１に取り付けられる。開口３１および膜部材４は、適度な大きさの円形形状であることが望ましい。膜部材４は、ゴム、樹脂から形成されるフィルムの薄膜を用いる。パイプ部材２および/またはケースが樹脂製であれば、膜部材をインサート成形等により同時に成形することも可能である。 The membrane member 4 is attached to the opening 31 between the gas flow passage 20 and the sound absorption chamber 30. It is desirable that the opening 31 and the membrane member 4 have a circular shape with an appropriate size. The film member 4 uses a thin film made of rubber or resin. If the pipe member 2 and / or the case is made of resin, the membrane member can be simultaneously formed by insert molding or the like.

孔５は、ケース３の上面に複数穿孔されている。孔５の穿孔数は、減衰したい放射音の周波数に基づいて適宜決定される。孔５は、ケース３の上面だけではなく、側面に形成してもよい。 A plurality of holes 5 are formed in the upper surface of the case 3. The number of holes 5 is appropriately determined based on the frequency of the radiated sound to be attenuated. The holes 5 may be formed not only on the upper surface of the case 3 but also on the side surfaces.

前記に係わるレゾネータ１を自動車のエンジンの吸気管に使用した例を用いて、レゾネータの作用と効果を説明する。 The operation and effect of the resonator will be described using an example in which the resonator 1 according to the above is used for an intake pipe of an automobile engine.

自動車のエンジンの通気管は、エンジン、エンジンに連結しているサージタンクとエアクリーナから構成されている。空気は、エンジンの回転数等により、エアクリーナ側から吸気され、スロットルを通り、サージタンクを介してエンジンへと吸気される。本発明の吸気装置１は、エアクリーナとサージタンクとの間に設置される。この際、エンジン側から回転数に応じた周波数の吸気音が発生する。 The vent pipe of an automobile engine includes an engine, a surge tank connected to the engine, and an air cleaner. Air is taken in from the air cleaner side depending on the engine speed and the like, passes through the throttle, and is sucked into the engine via the surge tank. The intake device 1 of the present invention is installed between an air cleaner and a surge tank. At this time, an intake sound having a frequency corresponding to the rotational speed is generated from the engine side.

本発明のレゾネータ１では、エンジンから発生して吸気管を伝播してきた音が気体流通路２０を通過し、気体流通路２０に連通している吸音室３０の開口３１に設けられた膜部材４が振動し、膜部材４の複数の固有振動数に対応する周波数の吸気音を減衰する。同時に発生する放射音はケースの上面に穿孔された複数の孔５により、効果的に減衰される。 In the resonator 1 of the present invention, the sound generated from the engine and propagated through the intake pipe passes through the gas flow passage 20 and is provided in the opening 31 of the sound absorption chamber 30 that communicates with the gas flow passage 20. Vibrate, and the intake sound having a frequency corresponding to a plurality of natural frequencies of the membrane member 4 is attenuated. Simultaneously generated radiated sound is effectively attenuated by a plurality of holes 5 drilled in the upper surface of the case.

１ レゾネータ
２ パイプ部材
３ ケース
４ 膜部材
５ 孔
２０ 気体流通路
３０ 吸音室
３１ 開口 1 Resonator 2 Pipe member 3 Case 4 Membrane member 5 Hole 20 Gas flow passage 30 Sound absorption chamber 31 Opening

Claims (1)

気体流通路を持つパイプ部材と、
該パイプ部材に一体的に形成され該気体流通路と連通する吸音室を持つケースと、
該ケースに穿孔された少なくとも1つの孔と、
前記気体流通路と前記吸音室の間または前記吸音室に設けられた前記気体流通路側の空間と該吸音室の少なくとも一部の空間とを分ける膜部材と、
を具備することを特徴とするレゾネータ。



A pipe member having a gas flow passage;
A case integrally formed with the pipe member and having a sound absorbing chamber communicating with the gas flow path;
At least one hole drilled in the case;
A membrane member that divides a space between the gas flow path and the sound absorption chamber or at least a part of the sound absorption chamber, and a space on the gas flow path side provided in the sound absorption chamber;
Resonator characterized by comprising.



JP2009119422A 2009-05-18 2009-05-18 Resonator Pending JP2010265851A (en)

Priority Applications (1)

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JP2009119422A JP2010265851A (en) 2009-05-18 2009-05-18 Resonator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009119422A JP2010265851A (en) 2009-05-18 2009-05-18 Resonator

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JP2010265851A true JP2010265851A (en) 2010-11-25

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JP2009119422A Pending JP2010265851A (en) 2009-05-18 2009-05-18 Resonator

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015175297A (en) * 2014-03-14 2015-10-05 トヨタ自動車株式会社 Air-intake duct

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003065173A (en) * 2001-08-24 2003-03-05 Inoac Corp Reduced noise duct
JP2010065553A (en) * 2008-09-09 2010-03-25 Denso Corp Control device of internal combustion engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003065173A (en) * 2001-08-24 2003-03-05 Inoac Corp Reduced noise duct
JP2010065553A (en) * 2008-09-09 2010-03-25 Denso Corp Control device of internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015175297A (en) * 2014-03-14 2015-10-05 トヨタ自動車株式会社 Air-intake duct

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