CN101179875A - Thin type high pitch loudspeaker - Google Patents
Thin type high pitch loudspeaker Download PDFInfo
- Publication number
- CN101179875A CN101179875A CNA2006101181781A CN200610118178A CN101179875A CN 101179875 A CN101179875 A CN 101179875A CN A2006101181781 A CNA2006101181781 A CN A2006101181781A CN 200610118178 A CN200610118178 A CN 200610118178A CN 101179875 A CN101179875 A CN 101179875A
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- permanent magnet
- magnet board
- vibrating diaphragm
- type high
- high pitch
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Abstract
The invention relates to a thin treble loudspeaker, which comprises a shell, a vibration film, a first permanent magnet plate, a second permanent magnet plate and a magnet. The first permanent magnet plate and the second permanent magnet plate are both fixed in the shell with a parallel interval arrangement. The vibration film is constructed with flexible films, to which windings are attached. The vibration film is suspended in a clearance between the first permanent magnet plate and the second permanent magnet plate. The first permanent magnet plate is provided with a plurality of vent holes, and the faceplate of the shell adjacent to the first permanent magnet plate is provided with a plurality of vent holes. The second permanent magnet plate or the faceplate of the shell adjacent to the second permanent magnet plate is a solid inaccessible structure. A sound pressure of the vibration film in the treble area is increased by the vent holes on one side of the vibration film and the solid inaccessible structure on the opposite side, thereby, an excellent sound pressure-frequency characteristic is obtained. Because a vibration amplitude of the vibration film in the tremble area is small, only a small interval between the permanent magnet plate and the vibration film is required to improve the efficiency of an electromagnetic energy being transformed to a sound energy.
Description
Technical field
The present invention relates to electric component, relate in particular to loud speaker, particularly a kind of thin type high pitch loudspeaker.
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 invention is to provide a kind of thin type high pitch loudspeaker, described this thin type high pitch loudspeaker 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 loudspeaker of the present invention 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 invention 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 present invention and prior art contrast, and its effect is actively with tangible.The present invention 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 a kind of thin type high pitch loudspeaker of the present invention;
Fig. 2 is the side structure schematic diagram of a kind of thin type high pitch loudspeaker of the present invention;
Fig. 3 is the structural representation of the side with vent hole structure of a kind of thin type high pitch loudspeaker of the present invention;
Fig. 4 is the structural representation of the inaccessible texture edge of a kind of thin type high pitch loudspeaker of the present invention.
Fig. 5 is acoustic pressure-frequency characteristic schematic diagram of an embodiment of a kind of thin type high pitch loudspeaker of the present invention.
Fig. 6 is the acoustic pressure-frequency characteristic schematic diagram of a kind of thin speaker in the prior art.
Embodiment
As Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, a kind of thin type high pitch loudspeaker of the present invention, 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 one embodiment of the invention, 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 the acoustic pressure-frequency characteristic schematic diagram of one embodiment of the present of invention shown in Figure 5.In addition, the acoustic pressure of this embodiment of the present invention on the high range more than the 8kHz frequency exceeds more than the 10dB than prior art.As seen the present invention 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 loudspeaker, 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 loudspeaker 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 loudspeaker 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 loudspeakers, it is characterized in that: described bolster is made of nonwoven fabrics.
5. thin type high pitch loudspeaker 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 loudspeaker 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 loudspeaker 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 loudspeaker 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 |
|---|---|---|---|
| CNA2006101181781A CN101179875A (en) | 2006-11-09 | 2006-11-09 | Thin type high pitch loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101181781A CN101179875A (en) | 2006-11-09 | 2006-11-09 | Thin type high pitch loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101179875A true CN101179875A (en) | 2008-05-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101181781A Pending CN101179875A (en) | 2006-11-09 | 2006-11-09 | Thin type high pitch loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101179875A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013152465A1 (en) * | 2012-04-10 | 2013-10-17 | Teng Ko-Chung | Tweeter unibody having improved structure |
-
2006
- 2006-11-09 CN CNA2006101181781A patent/CN101179875A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013152465A1 (en) * | 2012-04-10 | 2013-10-17 | Teng Ko-Chung | Tweeter unibody having improved structure |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080514 |