CN200976674Y - Thin type high pitch loudspeaker - Google Patents
Thin type high pitch loudspeaker Download PDFInfo
- Publication number
- CN200976674Y CN200976674Y CN 200620047657 CN200620047657U CN200976674Y CN 200976674 Y CN200976674 Y CN 200976674Y CN 200620047657 CN200620047657 CN 200620047657 CN 200620047657 U CN200620047657 U CN 200620047657U CN 200976674 Y CN200976674 Y CN 200976674Y
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- magnet board
- vibrating diaphragm
- high pitch
- type high
- 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.)
- Expired - Fee Related
Links
- 239000007787 solid Substances 0.000 claims abstract description 4
- 239000004020 conductor Substances 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
Images
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- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The utility model relates to a thin-type high pitch loudspeaker, which comprises a coat, a diaphragm, a first permanent magnet plate, a second permanent magnet plate and magnet, wherein, the first permanent magnet plate and the second permanent magnet plate are parallel spacing arranged and fixed in the coat, the diaphragm comprises the flexible film, the film is provided with a coil, the diaphragm is in the gap suspended between the first permanent magnet plate and the second permanent magnet plate, the first permanent magnet plate has a plurality of ventholes, the panel of the coat near the first permanent magnet plate has plural ventholes, the second permanent magnet plate or the panel of coat near the second permanent magnet plate are solid occlusive structures. Ventholes on the side of the diaphragm and occlusive structures on the opposite side cause the acoustic pressure of diaphragm higher in the high pitch area; a better characteristic of acoustic pressure-frequency is achieved. Because the vibration amplitude of the diaphragm is very small in the high pitch area, the space between the permanent magnet and diaphragm is smaller, the efficiency transformed from electromagnetic energy to acoustic energy is increased as well.
Description
Technical field
The utility model relates to electric component, relates in particular to loud speaker, particularly a kind of thin type high pitch loud speaker.
Background technology
In the prior art, the loud speaker of conical electromagnetic structure is the sounding component that often adopts.Because conical loud speaker is difficult to slimming, in recent years, has obtained exploitation by permanent magnet and the combined thin speaker that forms of vibrating diaphragm.Vibrating diaphragm in this kind thin speaker is by integraty formation coil formation on the flexible resin film is being arranged, by multipole magnetized, and dispose permanent magnet board respectively in opposite directions at the surface and the back side of above-mentioned vibrating diaphragm, and, permanent magnet board has the N utmost point and the S utmost point replaces the parallel stripes shape magnetization configuration that occurs with band shape, coil has the form of conductors of straight line, and the combination of vibrating diaphragm and permanent magnet board makes the straight line portion of coil between the S utmost point and the N utmost point.The magnetic flux that permanent magnet board produces and the coil interlinkage of vibrating diaphragm, the magnetic field and the permanent magnet board magnetic field interaction that produce during drive current process coil vibrate almost whole vibrating diaphragm on the vertical direction of face, thereby produce sound wave.Simultaneously, on the permanent magnet board of the face side of vibrating diaphragm and rear side and the air vent hole that all forms plural number on the shell of the face side of vibrating diaphragm and rear side, thereby form the open configuration that both direction can both be raised one's voice to its utmost, and can send very big acoustic energy.But this thin speaker is unsatisfactory in the acoustic pressure-frequency characteristic of high range.
Summary of the invention
The purpose of this utility model provides a kind of thin type high pitch loud speaker, and described this thin type high pitch loud speaker will solve in the prior art thin speaker in the unfavorable technical problem of the acoustic pressure-frequency characteristic of high range.
This thin type high pitch loud speaker of the present utility model is by shell, vibrating diaphragm and magnet constitute, wherein, described magnet comprises one first permanent magnet board and one second permanent magnet board, described first permanent magnet board and the second permanent magnet board parallel interval are provided with, first permanent magnet board and second permanent magnet board all are fixedly installed in the described shell, described vibrating diaphragm has flexible film by one and constitutes, be attached with coil on the described film, described vibrating diaphragm suspends and is arranged in the gap between first permanent magnet board and second permanent magnet board, the two ends of described coil all connect one separately and isolate binding post, any one described isolation binding post respectively with first permanent magnet board, perhaps second permanent magnet board, perhaps shell is fixed, be provided with a plurality of air vent holes in first permanent magnet board, be provided with a plurality of air vent holes in the panel of the shell adjacent with first permanent magnet board, the panel of second permanent magnet board or the shell adjacent with second permanent magnet board is solid inaccessible structure.
Further, be provided with a bolster between described first permanent magnet board and the vibrating diaphragm, described bolster has elasticity and ventilation space.
Further, be provided with a bolster between described second permanent magnet board and the vibrating diaphragm, described bolster has elasticity and ventilation space.
Further, described bolster is made of nonwoven fabrics.
Further, in described first permanent magnet board, the N utmost point and the S utmost point alternately occur with banded parallel stripes, in described second permanent magnet board, the N utmost point and the S utmost point alternately occur with banded parallel stripes, described vibrating diaphragm constitutes by having flexible resin film, and described coil is formed by conductor integraty on resin film, and described conductor has the form of straight line line segment.
Further, between the S utmost point and the N utmost point of the conductor of straight line line segment in first permanent magnet board and second permanent magnet board.
Further, described shell is connected and composed by a housing and a lid.
Further, described vibrating diaphragm is rectangular, and the two ends of described coil all connect a banded binding post of isolating separately, and the described banded binding post of isolating all is connected with the same side of vibrating diaphragm.
Operation principle of the present utility model is: by the magnetic flux of permanent magnet board generation and the coil interlinkage on the vibrating diaphragm, produce magnetic field during drive current process coil, with the magnetic field interaction of permanent magnet board, make almost that the vibrating diaphragm of whole area vibrates on the direction perpendicular to face, thereby produce sound wave.Because the structure of the loud speaker of vibrating diaphragm one side is inaccessible structure, makes the acoustic pressure of vibrating diaphragm in high range uprise, thereby obtains good acoustic pressure-frequency characteristic.In addition, because the vibration amplitude of vibrating diaphragm is very little in high range, so only need less interval between permanent magnet board and the vibrating diaphragm, the efficient that makes electromagnetic energy be converted into acoustic energy is improved.
The utility model and prior art contrast, and its effect is actively with tangible.The utility model is provided with open air vent hole in a side of the vibrating diaphragm of thin speaker, in an opposite side inaccessible structure is set, and makes the acoustic pressure of vibrating diaphragm in high range uprise, thereby obtains good acoustic pressure-frequency characteristic.In addition, because the vibration amplitude of vibrating diaphragm is very little in high range, so only need less interval between permanent magnet board and the vibrating diaphragm, the efficient that makes electromagnetic energy be converted into acoustic energy is improved.
Description of drawings
Fig. 1 is the structural representation of thin type high pitch loud speaker of the present utility model;
Fig. 2 is the side structure schematic diagram of thin type high pitch loud speaker of the present utility model;
Fig. 3 is the structural representation of the side with vent hole structure of thin type high pitch loud speaker of the present utility model;
Fig. 4 is the structural representation of the inaccessible texture edge of thin type high pitch loud speaker of the present utility model.
Fig. 5 is acoustic pressure-frequency characteristic schematic diagram of an embodiment of thin type high pitch loud speaker of the present utility model.
Fig. 6 is the acoustic pressure-frequency characteristic schematic diagram of thin speaker of the prior art.
Embodiment
As Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, thin type high pitch loud speaker of the present utility model, by shell 16, vibrating diaphragm 10 and magnet constitute, wherein, described magnet comprises one first permanent magnet board 12 and one second permanent magnet board 14, described first permanent magnet board 12 and the 14 parallel interval settings of second permanent magnet board, first permanent magnet board 12 and second permanent magnet board 14 all are fixedly installed in the described shell 16, described vibrating diaphragm 10 has flexible film 20 by one and constitutes, be attached with coil 22 on the described film 20, described vibrating diaphragm 10 suspends and is arranged in the gap between first permanent magnet board 12 and second permanent magnet board 14, the two ends of described coil 22 all connect one separately and isolate binding post 28, any one described isolation binding post 28 respectively with first permanent magnet board 12, perhaps second permanent magnet board 14, perhaps shell 16 is fixing, be provided with a plurality of air vent holes 24 in first permanent magnet board 12, the panel that is provided with a plurality of air vent hole 34, the second permanent magnet boards 14 or the shell 16 adjacent with second permanent magnet board 14 in the panel of the shell 16 adjacent with first permanent magnet board 12 is solid inaccessible structure.
Further, be provided with a bolster 26 between described first permanent magnet board 12 and the vibrating diaphragm 10, described bolster 26 has elasticity and ventilation space.
Further, be provided with a bolster 26 between described second permanent magnet board 14 and the vibrating diaphragm 10, described bolster 26 has elasticity and ventilation space.
Further, described bolster 26 is made of nonwoven fabrics.
Further, in described first permanent magnet board 12, the N utmost point and the S utmost point alternately occur with banded parallel stripes, in described second permanent magnet board 14, the N utmost point and the S utmost point alternately occur with banded parallel stripes, described vibrating diaphragm 10 constitutes by having flexible resin film, and described coil 22 is formed by conductor integraty on resin film, and described conductor has the form of straight line line segment.
Further, between the S utmost point and the N utmost point of the conductor of straight line line segment in first permanent magnet board 12 and second permanent magnet board 14.
Further, described vibrating diaphragm 10 is rectangular, and the two ends of described coil 22 all connect a banded binding post of isolating separately, and the described banded binding post of isolating all is connected with the same side of vibrating diaphragm 10.
Further, described shell 16 is connected and composed by a housing 30 and a lid 32.In an embodiment of the present utility model, housing 30 obtains after by metallic plate punching bending machining, is formed with the air vent hole 34 of the same position of air vent hole that is provided with permanent magnet board 12 on its interarea.Lid 32 also is to be formed through punching processing by metallic plate, and lid 32 peripheries are provided with the connecting portion 36 that is used to install, and the outside of lid 32 is established and is provided with external cabling terminal 38.Do not form air vent hole in the lid 32.The claw 40 that has a plurality of dispersions to form around the housing 30, any one claw 40 are aimed at the otch 42 of lid 32 and in inboard bending, thereby make vibrating diaphragm 10 and permanent magnet board 12 and permanent magnet board 14 etc. fix with besieged combinations of states.The termination of coil 22 is connected with outside terminal 38.
As seen, acoustic pressure nearby rises gradually in the 500Hz frequency in the acoustic pressure-frequency characteristic schematic diagram of thin speaker of the prior art shown in Figure 6, begins to be the planarization trend from the 4kHz frequency at high frequency side approximately, but very big fluctuation is arranged.Corresponding, as seen, acoustic pressure nearby rises sharply and smoothly in the 2kHz frequency and rises, and obtains good flat characteristic from the 8kHz frequency at high frequency side approximately in acoustic pressure-frequency characteristic schematic diagram of an embodiment of the present utility model shown in Figure 5.In addition, the acoustic pressure of this embodiment of the present utility model on the high range more than the 8kHz frequency exceeds more than the 10dB than prior art.As seen the utility model has very good characteristic as high pitch loudspeaker.In Fig. 5 and Fig. 6, transverse axis is represented the frequency of sound, and the longitudinal axis is represented acoustic pressure.
Claims (8)
1. thin type high pitch loud speaker, by shell, vibrating diaphragm and magnet constitute, it is characterized in that: described magnet comprises one first permanent magnet board and one second permanent magnet board, described first permanent magnet board and the second permanent magnet board parallel interval are provided with, first permanent magnet board and second permanent magnet board all are fixedly installed in the described shell, described vibrating diaphragm has flexible film by one and constitutes, be attached with coil on the described film, described vibrating diaphragm suspends and is arranged in the gap between first permanent magnet board and second permanent magnet board, the two ends of described coil all connect one separately and isolate binding post, any one described isolation binding post respectively with first permanent magnet board, perhaps second permanent magnet board, perhaps shell is fixed, be provided with a plurality of air vent holes in first permanent magnet board, be provided with a plurality of air vent holes in the panel of the shell adjacent with first permanent magnet board, the panel of second permanent magnet board or the shell adjacent with second permanent magnet board is solid inaccessible structure.
2. thin type high pitch loud speaker according to claim 1 is characterized in that: be provided with a bolster between described first permanent magnet board and the vibrating diaphragm, described bolster has elasticity and ventilation space.
3. thin type high pitch loud speaker according to claim 1 is characterized in that: be provided with a bolster between described second permanent magnet board and the vibrating diaphragm, described bolster has elasticity and ventilation space.
4. according to claim 2 or 3 described thin type high pitch loud speakers, it is characterized in that: described bolster is made of nonwoven fabrics.
5. thin type high pitch loud speaker according to claim 1, it is characterized in that: in described first permanent magnet board, the N utmost point and the S utmost point alternately occur with banded parallel stripes, in described second permanent magnet board, the N utmost point and the S utmost point alternately occur with banded parallel stripes, described vibrating diaphragm constitutes by having flexible resin film, and described coil is formed by conductor integraty on resin film, and described conductor has the form of straight line line segment.
6. thin type high pitch loud speaker according to claim 5 is characterized in that: between the S utmost point and the N utmost point of the conductor of straight line line segment in first permanent magnet board and second permanent magnet board.
7. thin type high pitch loud speaker according to claim 1 is characterized in that: described shell is connected and composed by a housing and a lid.
8. thin type high pitch loud speaker according to claim 1, it is characterized in that: described vibrating diaphragm is rectangular, the two ends of described coil all connect a banded binding post of isolating separately, and the described banded binding post of isolating all is connected with the same side of vibrating diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620047657 CN200976674Y (en) | 2006-11-09 | 2006-11-09 | Thin type high pitch loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620047657 CN200976674Y (en) | 2006-11-09 | 2006-11-09 | Thin type high pitch loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200976674Y true CN200976674Y (en) | 2007-11-14 |
Family
ID=38902952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620047657 Expired - Fee Related CN200976674Y (en) | 2006-11-09 | 2006-11-09 | Thin type high pitch loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200976674Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013152465A1 (en) * | 2012-04-10 | 2013-10-17 | Teng Ko-Chung | Tweeter unibody having improved structure |
| CN110345972A (en) * | 2019-06-25 | 2019-10-18 | 歌尔股份有限公司 | A kind of sensor and electronic equipment |
-
2006
- 2006-11-09 CN CN 200620047657 patent/CN200976674Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013152465A1 (en) * | 2012-04-10 | 2013-10-17 | Teng Ko-Chung | Tweeter unibody having improved structure |
| CN110345972A (en) * | 2019-06-25 | 2019-10-18 | 歌尔股份有限公司 | A kind of sensor and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071114 Termination date: 20101109 |