CN2072300U - Surface acting plane loudspeaker - Google Patents
Surface acting plane loudspeaker Download PDFInfo
- Publication number
- CN2072300U CN2072300U CN 89207829 CN89207829U CN2072300U CN 2072300 U CN2072300 U CN 2072300U CN 89207829 CN89207829 CN 89207829 CN 89207829 U CN89207829 U CN 89207829U CN 2072300 U CN2072300 U CN 2072300U
- Authority
- CN
- China
- Prior art keywords
- voice coil
- loudspeaker
- garden
- plane
- magnetic
- 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.)
- Withdrawn
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- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The utility model relates to a surface driving plane loudspeaker, belonging to a loudspeaker, and is a thin type plane loudspeaker composed of a vibrating system, a magnetic path, a main body, an auxiliary device. The structure of an approximate plane audio sound board which is composed of concentric and round type multiple magnetic gaps, multiple voice coils, multiple annular and curved surfaces is used. The frequency response curve and the frequency response index of the loudspeaker are improved. Due to that a voice membrane is nearly plane, the thickness of the loudspeaker is reduced. The utility model is practically meaningful for developing thin type radios, large plane loudspeakers and high tone quality audio systems.
Description
The utility model is a kind of of electrodynamic loudspeaker, belongs to face drive-type panel speaker.
Loud speaker is most popular at present is the moving-coil type cone loudspeaker, the moving-coil type cone loudspeaker has the vibrating membrane of a taper, and audio frequency replaying effect is preferably arranged, and the low characteristics of low audio frequency playback lower frequency limit are arranged, to further reduce the size of loud speaker thickness, be difficult to accomplish.
It is little to the objective of the invention is to develop a kind of volume, thin thickness, highly sensitive, face drive-type thin flat formula loud speaker that frequency response is effective.Adopt many magnetic gaps, multitone ring, a plurality of concentric curved surfaces garden ring to be spliced into the structure of a macroscopical plane vibration film.
The purpose of this utility model can reach by following measure: the combination field of many magnetic gaps is made up of the magnet ring 13,14,15 that center magnetic post 12 and size dimension do not wait.The outside of center magnetic post 12 is with magnet ring 13, the centre is a magnetic gap 2, form toroidal magnetic field, a garden, be with magnet ring 14 in the outside of magnet ring 13, the centre is a magnetic gap 4, form toroidal magnetic field, a garden, be with magnet ring 15 in the outside of magnet ring 14, the centre is a magnetic gap 6, form toroidal magnetic field, a garden, constitute the flat garden annular combination field of magnetic gap more than, many magnetic fields, garden with one heart composition.Voice coil loudspeaker voice coil 1,3,5 is arranged in magnetic gap 2,4,6, a sound film 8 is arranged on the voice coil loudspeaker voice coil 1, he is continuous with the garden annular sound film 9 on being connected voice coil loudspeaker voice coil 3, sound film 9 is continuous with the garden annular sound film 10 on being connected voice coil loudspeaker voice coil 5, sound film 10 links to each other with garden annular sound film 11, sound film 11 and shell 7 adhesions, every layer of voice coil loudspeaker voice coil have two lead-in wires to draw to adhere on the shell 7.Approximate dull and stereotyped many curved surfaces combination tone film oscillating plate that formation is spliced into by a plurality of concentric curved surface garden ring sound films that differ in size.Promptly in a plurality of voice coil loudspeaker voice coils, feed synchronous tone currents respectively, according to not coming bright left hand rule, voice coil loudspeaker voice coil has produced a power that is directly proportional with audio-frequency current under the effect in magnetic field, promotes the voice coil loudspeaker voice coil vibration, drives the vibration of sound film, with electric energy → mechanical energy → acoustic energy.Form flat garden shape combination field owing to adopt magnetic field, a plurality of concentric garden, the physical dimension difference in each magnetic field, the audio frequency impedance of each voice coil loudspeaker voice coil is also different in the magnetic gap, the garden ring resonance frequency that radius is big is low, the resonance frequency height that is tending towards garden, center ring, in audiorange, full sounding board has the many places resonance point, and oscillating plate resonance frequency curve is more become smoothly, and multitone ring drives, the unified vibration of vibration plate full width face, form the plane multi-drive type, resonance curve is more widened smooth, under same audio power, the Oscillation Amplitude of sounding board is littler than the amplitude of original coil-moving speaker, the height of whole loud speaker reduces, on macroscopic view, and approximate plane, so claim flat-plate loudspeaker, owing to adopt a plurality of voice coil loudspeaker voice coils, can form the output impedance that is more suitable in integrated circuit or transistor circuit, improve tonequality and efficiency of transmission, voice coil loudspeaker voice coil adopts suitable combination (serial connection of circuit or and connect), can make this response to voltage on macroscopic view of oscillating plate that better mechanical compliance is arranged.
Below in conjunction with accompanying drawing the utility model is described:
Fig. 1: face drives the flat panel speaker structure chart
Fig. 2: face drives the flat panel speaker central cross-sectional view
Fig. 1: face drives the flat panel speaker structure chart:
The utility model is by shell 7, center magnetic post 12, and magnet ring 13,14,15, magnetic gap 2,4,5, voice coil loudspeaker voice coil 1,3,5, ring- type sound film 9,10,11, middle hear sounds film 8, voice coil leads 16, center bearing bracket 17 is formed.Shell 7 is formed by the plastics compacting, there is center magnetic post 12 centre, be with three road magnet rings 13,14,15 in his outside, they are bonded at respectively on the shell 7, be first magnetic gap 2 between the center magnetic post 12 and the first road magnet ring 13, be second magnetic gap 4 between the first road magnet ring 13 and the second road magnet ring 14, between the second road magnet ring 14 and the 3rd road magnet ring 15 the 3rd magnetic gap 5, ground floor voice coil loudspeaker voice coil 1 is arranged between first magnetic gap, second 4 of magnetic gap has in 3, the three magnetic gaps of second layer voice coil loudspeaker voice coil the 3rd voice coil loudspeaker voice coil 6 arranged.Middle hear sounds film 8 links to each other with ground floor voice coil loudspeaker voice coil 1, first ring-type sound film 9, first ring-type sound film 9 and second layer voice coil loudspeaker voice coil 3, second ring-type sound film 10 link to each other, second ring-type sound film 10 links to each other with the 3rd ring-type voice coil loudspeaker voice coil 6, the 3rd ring-type sound film 11, the 3rd ring-type sound film 11 and shell 7 adhesion mutually, form an oscillating plate, every layer of voice coil loudspeaker voice coil has two lead-in wires to draw 16 to go out, adhere on the shell 7, and center bearing bracket 17 plays fixedly voice coil loudspeaker voice coil and sound film.
Fig. 2: face drives the panel speaker central cross-sectional view:
Face drives flat panel speaker to be analysed and observe by the center, further observes the annexation between magnetic field, coil, the sound film.
Face drives panel speaker, magnetic field by a plurality of concentric gardens shape is formed, in the middle of each garden shape magnetic gap, insert the voice coil loudspeaker voice coil that diameter does not wait, voice coil loudspeaker voice coil is flat on the garden tube of a papery skeleton by enamelled wire, the sound film is supported by the minority centre frame, voice coil loudspeaker voice coil and form an oscillating plate by the sound film of papery is bonding mutually, when each voice coil loudspeaker voice coil is imported synchronous tone currents simultaneously, produced a power that is directly proportional with audio-frequency current, the vibration of promotion voice coil loudspeaker voice coil, voice coil loudspeaker voice coil drives vibration plate vibrates, and air vibration before and after promoting goes the ejaculation of the sound width of cloth.
Claims (3)
1, a kind of drive-type panel speaker, form by vibrational system, magnetic circuit and additional device, it is characterized in that constituting the combination field of magnetic gap more than, and vibrational system is made of the audio frequency sounding board of almost plane jointly a plurality of voice coil loudspeaker voice coils and corresponding garden ring curved surface by a plurality of concentric gardens magnet.
2, according to claim 1 drives panel speaker, it is characterized in that a plurality of concentric garden magnetic gap in the magnetic field is made up of a plurality of concentric gardens magnet.
3, according to claim 1 drives panel speaker, it is characterized in that garden shape sound film is the many curved surfaces combination tone film by the bonding approximate flat board that forms of curved surface of voice coil loudspeaker voice coil in each magnetic gap and garden annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89207829 CN2072300U (en) | 1989-05-31 | 1989-05-31 | Surface acting plane loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89207829 CN2072300U (en) | 1989-05-31 | 1989-05-31 | Surface acting plane loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2072300U true CN2072300U (en) | 1991-02-27 |
Family
ID=4864621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89207829 Withdrawn CN2072300U (en) | 1989-05-31 | 1989-05-31 | Surface acting plane loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2072300U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8542862B2 (en) | 2008-12-08 | 2013-09-24 | Fps Inc. | Flat acoustic transducer and method for driving the same |
| CN106937226A (en) * | 2017-05-13 | 2017-07-07 | 门立山 | Solid vibration film loudspeaker |
| CN106954161A (en) * | 2017-05-13 | 2017-07-14 | 门立山 | A kind of many magnetic gap multiple voice coils loudspeakers |
| CN107343248A (en) * | 2017-08-30 | 2017-11-10 | 钟礼通 | The more sub-frequency loudspeakers of shared magnetic circuit |
| US20230328448A1 (en) * | 2020-01-21 | 2023-10-12 | Clean Energy Labs, Llc | Electroacoustic drivers and loudspeakers containing same |
-
1989
- 1989-05-31 CN CN 89207829 patent/CN2072300U/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8542862B2 (en) | 2008-12-08 | 2013-09-24 | Fps Inc. | Flat acoustic transducer and method for driving the same |
| CN102246538B (en) * | 2008-12-08 | 2014-03-12 | 株式会社Fps | Flat audio transformation device |
| CN106937226A (en) * | 2017-05-13 | 2017-07-07 | 门立山 | Solid vibration film loudspeaker |
| CN106954161A (en) * | 2017-05-13 | 2017-07-14 | 门立山 | A kind of many magnetic gap multiple voice coils loudspeakers |
| CN106937226B (en) * | 2017-05-13 | 2019-07-30 | 门立山 | Solid vibration film loudspeaker |
| CN107343248A (en) * | 2017-08-30 | 2017-11-10 | 钟礼通 | The more sub-frequency loudspeakers of shared magnetic circuit |
| US20230328448A1 (en) * | 2020-01-21 | 2023-10-12 | Clean Energy Labs, Llc | Electroacoustic drivers and loudspeakers containing same |
| US12003943B2 (en) * | 2020-01-21 | 2024-06-04 | Brane Audio, LLC | Electroacoustic drivers and loudspeakers containing same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |