JPS601648U - Vehicle interior muffled sound reduction device - Google Patents

Vehicle interior muffled sound reduction device

Info

Publication number
JPS601648U
JPS601648U JP9323783U JP9323783U JPS601648U JP S601648 U JPS601648 U JP S601648U JP 9323783 U JP9323783 U JP 9323783U JP 9323783 U JP9323783 U JP 9323783U JP S601648 U JPS601648 U JP S601648U
Authority
JP
Japan
Prior art keywords
vehicle interior
reduction device
muffled sound
sound
sound reduction
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.)
Pending
Application number
JP9323783U
Other languages
Japanese (ja)
Inventor
明 佐藤
Original Assignee
日産自動車株式会社
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
Application filed by 日産自動車株式会社 filed Critical 日産自動車株式会社
Priority to JP9323783U priority Critical patent/JPS601648U/en
Publication of JPS601648U publication Critical patent/JPS601648U/en
Pending legal-status Critical Current

Links

Landscapes

  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来のこもり音低減装置の構成を示す図、第２
図は４気筒エンジン車の中速こもり音の特性を示す特性
図、第３図は本考案の一実施例の構成を示す斜視図、第
４図は第３図の装置の断面図、第５図は第４図の部分拡
大図である。 １・・・車室、２−・・スジ−力、３・・・エンジン、
４・・・波形整形器、５・・・アンプ、６・・・制御回
路、７・・・ダツシュロア、８・・・ダッシュアッパ、
９・・・フロアパネル、１０・・・ダツシュロアクロス
メンバ、１１・・・スピーカ、１２・・・スピーカカバ
ー。 第２図 第３図Figure 1 is a diagram showing the configuration of a conventional muffled sound reduction device;
The figure is a characteristic diagram showing the characteristics of medium-speed muffled noise in a four-cylinder engine vehicle, FIG. 3 is a perspective view showing the configuration of an embodiment of the present invention, FIG. 4 is a sectional view of the device shown in FIG. The figure is a partially enlarged view of FIG. 4. 1... Vehicle interior, 2-... Steering force, 3... Engine,
4...Waveform shaper, 5...Amplifier, 6...Control circuit, 7...Datsuschroa, 8...Dash upper,
9...Floor panel, 10...Dass lower cross member, 11...Speaker, 12...Speaker cover. Figure 2 Figure 3

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 自動車の車室内に発生するこもり音を音圧レベルと周波
数が同じで逆位相の音波により打消すようにした車室内
こもり音低減装置において、ダツシュロアとダツシュロ
アクロスメンバにより閉空間を形成しこの空間を前記音
波を発生する発音体のエンクロージャとし、かつこのエ
ンクロージャの共振周波数を前記こもり音の周波数に設
定したことを特徴とする車室内こもり音低減装置。In a vehicle interior muffled sound reduction device that cancels the muffled sound generated in the vehicle interior of a car by using sound waves with the same sound pressure level and frequency but opposite phase, a closed space is formed by a darts lower and a darts lower cross member. is an enclosure for a sounding body that generates the sound wave, and the resonance frequency of the enclosure is set to the frequency of the muffled sound.
JP9323783U 1983-06-20 1983-06-20 Vehicle interior muffled sound reduction device Pending JPS601648U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9323783U JPS601648U (en) 1983-06-20 1983-06-20 Vehicle interior muffled sound reduction device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9323783U JPS601648U (en) 1983-06-20 1983-06-20 Vehicle interior muffled sound reduction device

Publications (1)

Publication Number Publication Date
JPS601648U true JPS601648U (en) 1985-01-08

Family

ID=30223945

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9323783U Pending JPS601648U (en) 1983-06-20 1983-06-20 Vehicle interior muffled sound reduction device

Country Status (1)

Country Link
JP (1) JPS601648U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015185970A (en) * 2014-03-24 2015-10-22 マツダ株式会社 Loudspeaker arrangement structure on front-passenger seat kick board
JP2018055130A (en) * 2017-12-20 2018-04-05 パイオニア株式会社 Acoustic conversion device for active noise control

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015185970A (en) * 2014-03-24 2015-10-22 マツダ株式会社 Loudspeaker arrangement structure on front-passenger seat kick board
JP2018055130A (en) * 2017-12-20 2018-04-05 パイオニア株式会社 Acoustic conversion device for active noise control

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