JPS601645U - Vehicle interior muffled sound reduction device - Google Patents
Vehicle interior muffled sound reduction deviceInfo
- Publication number
- JPS601645U JPS601645U JP9323483U JP9323483U JPS601645U JP S601645 U JPS601645 U JP S601645U JP 9323483 U JP9323483 U JP 9323483U JP 9323483 U JP9323483 U JP 9323483U JP S601645 U JPS601645 U JP S601645U
- Authority
- JP
- Japan
- Prior art keywords
- vehicle interior
- reduction device
- sound
- muffled sound
- muffled
- 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
Links
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (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
第１図は従来の車室内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を示す特性
図、第３図は本考案の車室内こもり音低減装置の一実施
例の構成を示す断面図、第４図は本考案装置に用いるス
ピーカと一般のスピーカの特性とを比較した特性図であ
る。
１・・・車室、−２−・・スピーカ、３・・・エンジン
、４・・・波形整形回路、５・・・パワーアンプ、６・
・・制御回路、１０・・・スピーカユニット、１１・・
・ｍ動板、１２・・・リベット、１３・・・駆動コイル
、１４・・・永久磁石、１５・・・枠、１６・・・箱、
１７・・・ネット、１８・・・穴、１９・・・表面、２
０・・・リヤパーセル、２１・・・リヤシート、２２・
・・リヤウィンドシールド、２３・・・トランクルーム
。Figure 1 is a diagram showing the configuration of a conventional vehicle interior muffled noise reduction device, Figure 2 is a characteristic diagram showing medium speed muffled noise in a 4-cylinder engine vehicle, and Figure 3 is a diagram showing the vehicle interior muffled noise reduction device of the present invention. FIG. 4 is a sectional view showing the configuration of one embodiment, and is a characteristic diagram comparing the characteristics of the speaker used in the device of the present invention and that of a general speaker. DESCRIPTION OF SYMBOLS 1... Vehicle interior, -2-... Speaker, 3... Engine, 4... Waveform shaping circuit, 5... Power amplifier, 6...
...Control circuit, 10...Speaker unit, 11...
・m moving plate, 12... rivet, 13... drive coil, 14... permanent magnet, 15... frame, 16... box,
17...net, 18...hole, 19...surface, 2
0...Rear parcel, 21...Rear seat, 22.
...Rear windshield, 23...Trunk room.
Claims (1)
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、こもり音を打消す音圧を発
生するスピーカが板状のばね性を有する振動板と、該振
動板を駆動するコイルおよびマグネットとから構成され
、かつ該振動板の共振周波数が車室内こもり音の周波数
と等しくされている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 car cabin using sound waves that have the same frequency and opposite phase as the sound pressure level, the speaker that generates the sound pressure that cancels the muffled sound is a plate-shaped speaker. A vehicle interior muffler comprising a diaphragm having a spring property, a coil and a magnet for driving the diaphragm, and a resonant frequency of the diaphragm is made equal to the frequency of muffled sound in the vehicle interior. Sound reduction device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9323483U JPS601645U (en) | 1983-06-20 | 1983-06-20 | Vehicle interior muffled sound reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9323483U JPS601645U (en) | 1983-06-20 | 1983-06-20 | Vehicle interior muffled sound reduction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS601645U true JPS601645U (en) | 1985-01-08 |
| JPH0355465Y2 JPH0355465Y2 (en) | 1991-12-10 |
Family
ID=30223942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9323483U Granted JPS601645U (en) | 1983-06-20 | 1983-06-20 | Vehicle interior muffled sound reduction device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS601645U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5298501A (en) * | 1976-02-13 | 1977-08-18 | Nagoya Railroad | Silencer |
-
1983
- 1983-06-20 JP JP9323483U patent/JPS601645U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5298501A (en) * | 1976-02-13 | 1977-08-18 | Nagoya Railroad | Silencer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0355465Y2 (en) | 1991-12-10 |
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