CN102300141A - Bending diaphragm loudspeaker - Google Patents
Bending diaphragm loudspeaker Download PDFInfo
- Publication number
- CN102300141A CN102300141A CN2011101884985A CN201110188498A CN102300141A CN 102300141 A CN102300141 A CN 102300141A CN 2011101884985 A CN2011101884985 A CN 2011101884985A CN 201110188498 A CN201110188498 A CN 201110188498A CN 102300141 A CN102300141 A CN 102300141A
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- China
- Prior art keywords
- diaphragm
- loud speaker
- voice coil
- crooked
- vibration source
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- 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.)
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- Diaphragms For Electromechanical Transducers (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
The invention provides a sounding loudspeaker utilizing a bending vibration principle. The loudspeaker comprises a diaphragm which is covered with certain elastic and porous damping characteristic material, a driving vibration source in staggered arrangement, a framework and the like.
Description
One, technical field
The present invention relates to a kind of loud speaker, refer in particular to a kind of loud speaker that utilizes flexural vibrations principle sounding.
Two, background technology
The LincolnWalsh development seventies in 20th century is also come out by the commercial product of Ohm company, and German MBL company also has and the similar product of its principle.
Three, summary of the invention
The loud speaker that utilizes flexural vibrations principle sounding that the present invention proposes: mainly by the surface be covered with the elastic porous material that has certain damping crooked diaphragm, be staggered driving vibration source and framework etc. and partly constitute.This paper proposes the mechanical model of this kind loud speaker, and providing vibration source is that piezoelectric ceramic and vibration source are two kinds of crooked vibrating membrane loudspeaker basic block diagram of electrodynamic type driver, provides the bending film loud speaker sample measured result that utilizes 5 Piezoelectric Ceramic.
Four, description of drawings
Fig. 1 is crooked vibrating membrane loudspeaker mechanical model.
Fig. 2 is a crooked vibrating membrane loudspeaker basic block diagram of utilizing the piezoelectric ceramic vibration source to drive.
Fig. 3 is a crooked vibrating membrane loudspeaker basic block diagram of utilizing the electrodynamic type vibration source to drive.
Fig. 4 is the measured result figure of the crooked vibrating membrane loudspeaker sample of 5 piezoelectric ceramic vibration sources drivings of utilization.
Five, embodiment
Following accompanying drawing as a result further specifies
Fig. 1 is the loud speaker mechanical model that utilizes flexural vibrations principle sounding, getting flexural vibrations film system fragment among the figure makes a concrete analysis of, wherein: EI is the bending rigidity of diaphragm, M is the diaphragm distributed mass, h is a diaphragm thickness, K be the poroelasticity damping material perpendicular to diaphragm direction rigidity, C is that elasticity porous damping material is perpendicular to the damping of diaphragm direction, m is an elasticity porous damping material distributed mass, K
1For elasticity porous damping material is parallel to diaphragm direction rigidity, C
1For elasticity porous damping material is parallel to the damping of diaphragm direction, F and F ' are for acting on the actuating force on the crooked diaphragm.
Fig. 2 is a crooked vibrating membrane loudspeaker basic block diagram of utilizing the piezoelectric ceramic vibration source to drive, and wherein: 1-is the piezoelectric ceramic vibration source, and 2-is the flexural vibrations diaphragm, 3-vibrating diaphragm and piezoelectric ceramic vibration source attachment position, 4-elasticity porous damping material, 5-damping mass piece, the 6-framework, the 7-lead-out wire.
Fig. 3 is a crooked vibrating membrane loudspeaker basic block diagram of utilizing the electrodynamic type vibration source to drive, wherein: 1-is a magnetic circuit system, the 2-voice coil loudspeaker voice coil, locating branch slice in the 3-, 4-place locating branch slice, 5-voice coil loudspeaker voice coil lead-out wire, transition hookup between 6-diaphragm and the voice coil loudspeaker voice coil, the 7-framework, the crooked diaphragm of 8-, 9-poroelasticity damping material.
The crooked vibrating membrane loudspeaker measured result figure that Fig. 4 drives for five piezoelectric ceramic vibration sources of utilization, wherein: 1-frequency loudness contour, 2-second harmonic distortion curve, 3-third harmonic distortion curve, show among the figure that second harmonic distortion is higher than third harmonic distortion, satisfies people's ear second harmonic distortion is difficult for finding characteristic.
Claims (3)
1. loud speaker that utilizes flexural vibrations principle sounding, its structure mainly is covered with the elasticity porous by the surface and has the crooked diaphragm of certain damping characteristic material, is staggered vibration source and framework etc. and partly constitutes.
2. be according to claim 1 its architectural feature of described loud speaker: this loud speaker is made of piezoelectric ceramic vibration source, flexural vibrations diaphragm, elasticity porous damping material, damping mass piece etc.
3. according to claim 1 described loud speaker, its architectural feature is: this loud speaker is by magnetic circuit system, voice coil loudspeaker voice coil, inside and outside locating branch slice, formations such as transition hookup, framework, crooked diaphragm, poroelasticity damping material between diaphragm and the voice coil loudspeaker voice coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101884985A CN102300141A (en) | 2011-07-06 | 2011-07-06 | Bending diaphragm loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101884985A CN102300141A (en) | 2011-07-06 | 2011-07-06 | Bending diaphragm loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102300141A true CN102300141A (en) | 2011-12-28 |
Family
ID=45360248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101884985A Pending CN102300141A (en) | 2011-07-06 | 2011-07-06 | Bending diaphragm loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102300141A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014143927A2 (en) * | 2013-03-15 | 2014-09-18 | Emo Labs, Inc. | Acoustic transducers |
| CN105208496A (en) * | 2014-06-30 | 2015-12-30 | 冠捷投资有限公司 | Curved type loudspeaker and curved type display device |
| US9232316B2 (en) | 2009-03-06 | 2016-01-05 | Emo Labs, Inc. | Optically clear diaphragm for an acoustic transducer and method for making same |
| WO2016165319A1 (en) * | 2015-04-16 | 2016-10-20 | 歌尔声学股份有限公司 | Speaker device and smart wristband device applying the speaker |
| CN110710228A (en) * | 2017-06-09 | 2020-01-17 | Ask工业股份公司 | Loudspeaker structure |
| TWI843497B (en) * | 2022-04-07 | 2024-05-21 | 大陸商深圳市韶音科技有限公司 | An acoustic output device |
| TWI843496B (en) * | 2022-04-07 | 2024-05-21 | 大陸商深圳市韶音科技有限公司 | An acoustic output device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5538739A (en) * | 1978-09-12 | 1980-03-18 | Pioneer Electronic Corp | Acoustic diaphragm |
| US20040163883A1 (en) * | 2003-02-24 | 2004-08-26 | Alps Electric Co., Ltd. | Electroacoustic transducer |
| CN201114756Y (en) * | 2006-12-11 | 2008-09-10 | 深圳市兰光进出口有限公司 | A vibration film surrounding push flat plate speaker |
| CN101262713A (en) * | 2007-03-09 | 2008-09-10 | 谭红 | A plane speaker |
-
2011
- 2011-07-06 CN CN2011101884985A patent/CN102300141A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5538739A (en) * | 1978-09-12 | 1980-03-18 | Pioneer Electronic Corp | Acoustic diaphragm |
| US20040163883A1 (en) * | 2003-02-24 | 2004-08-26 | Alps Electric Co., Ltd. | Electroacoustic transducer |
| CN201114756Y (en) * | 2006-12-11 | 2008-09-10 | 深圳市兰光进出口有限公司 | A vibration film surrounding push flat plate speaker |
| CN101262713A (en) * | 2007-03-09 | 2008-09-10 | 谭红 | A plane speaker |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9232316B2 (en) | 2009-03-06 | 2016-01-05 | Emo Labs, Inc. | Optically clear diaphragm for an acoustic transducer and method for making same |
| WO2014143927A2 (en) * | 2013-03-15 | 2014-09-18 | Emo Labs, Inc. | Acoustic transducers |
| WO2014143927A3 (en) * | 2013-03-15 | 2014-11-27 | Emo Labs, Inc. | Acoustic transducers |
| US9100752B2 (en) | 2013-03-15 | 2015-08-04 | Emo Labs, Inc. | Acoustic transducers with bend limiting member |
| US9226078B2 (en) | 2013-03-15 | 2015-12-29 | Emo Labs, Inc. | Acoustic transducers |
| CN105208496A (en) * | 2014-06-30 | 2015-12-30 | 冠捷投资有限公司 | Curved type loudspeaker and curved type display device |
| WO2016165319A1 (en) * | 2015-04-16 | 2016-10-20 | 歌尔声学股份有限公司 | Speaker device and smart wristband device applying the speaker |
| CN110710228A (en) * | 2017-06-09 | 2020-01-17 | Ask工业股份公司 | Loudspeaker structure |
| TWI843497B (en) * | 2022-04-07 | 2024-05-21 | 大陸商深圳市韶音科技有限公司 | An acoustic output device |
| TWI843496B (en) * | 2022-04-07 | 2024-05-21 | 大陸商深圳市韶音科技有限公司 | An acoustic output device |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111228 |