CN103281656A - Flat plate type bass loudspeaker - Google Patents
Flat plate type bass loudspeaker Download PDFInfo
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- CN103281656A CN103281656A CN2013101671422A CN201310167142A CN103281656A CN 103281656 A CN103281656 A CN 103281656A CN 2013101671422 A CN2013101671422 A CN 2013101671422A CN 201310167142 A CN201310167142 A CN 201310167142A CN 103281656 A CN103281656 A CN 103281656A
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Abstract
The invention provides a flat plate type bass loudspeaker, which comprises a vibration diaphragm, at least four independent driving units and an outer casing, wherein the vibration diaphragm is of a rectangular structure and comprises a rigid ball top part and a corrugated rim part, the ball top part is positioned at the center of the vibration diaphragm, the corrugated rim part is positioned at the edge of the vibration diaphragm, each driving unit comprises a voice coil unit and a magnetic circuit unit corresponding to the voice coil unit, the voice coil units are fixedly arranged at the ball top part of the vibration diaphragm in an attached way, the outer casing comprises a mounting plane and an annular side wall which surrounds the mounting plane, the mounting plane is provided with mounting holes and voice outlet holes, the mounting holes are used for accommodating and fixing the magnetic circuit units, the voice outlet holes penetrate through the mounting plane, the upper side surface of the annular side wall is fixedly connected with the corrugated rim part of the vibration diaphragm, and the number and the position of the mounting holes are corresponding to the number and the position of the voice coils which are attached at the ball top part of the vibration diaphragm. The flat plate type bass loudspeaker can solve the problems of the heavy voice coils and excessive magnet performance.
Description
Technical field
The present invention relates to the acoustic-electric technical field, more specifically, relate to a kind of flat woofer.
Background technology
Along with the progress of society and the development of technology, in recent years, electronic product volumes such as television set constantly reduce slimming day by day, people are also more and more higher to the performance requirement of these electronic products, thus the continuous thickness of volume that also requires supporting electronic component with it also reduce, performance and consistency improve constantly.
The woofer of traditional structure adopts the vibrating diaphragm of taper cone shape usually, and the center of conical diaphragm comprises a voice coil loudspeaker voice coil, and the size of magnetic circuit system is thicker.The woofer of this structure, the thickness of product is bigger, can't satisfy the present electronic product demand of slimming day by day, and practicality is not strong.
And woofer has bigger bore usually in order to guarantee its low frequency sound effect, namely has bigger vibrating diaphragm area.If adopt a tabular vibrating diaphragm, be combined with the structure (voice coil loudspeaker voice coil need be positioned at submarginal position) of a voice coil loudspeaker voice coil, large-area vibrating diaphragm requires the voice coil loudspeaker voice coil size also bigger, and the coiling difficulty is more yielding.In addition, the magnet size of existing woofer is bigger, and washer and basin frame thickness were all less when slimming was used, and magnetic circuit system is saturated easily, and magnet performance surplus cause waste, and cost is higher.
Based on above factor, need the product of traditional structure be improved.
Summary of the invention
In view of the above problems, the purpose of this invention is to provide a kind of flat woofer, with the slimming of realization woofer, and the solution voice coil loudspeaker voice coil is thick and heavy and the problem of magnet performance surplus.
The invention provides a kind of flat woofer, comprise vibrating diaphragm, at least four separate driver elements and shell; Wherein,
Vibrating diaphragm is rectangular configuration, comprises the ball top and the ring portion that is positioned at marginal position of the rigidity that is positioned at the center;
Driver element comprises voice coil unit and the magnetic circuit unit corresponding with voice coil unit, and voice coil unit is fitted and is fixed on the ball top of vibrating diaphragm;
Shell comprises mounting plane and is arranged on annular sidewall around the mounting plane, and mounting plane is provided be used to accommodating fixedly the installing hole of magnetic circuit unit and the phonate hole of perforation mounting plane, and the upper side of annular sidewall is fixedlyed connected with the ring portion of vibrating diaphragm; Wherein,
The quantity of installing hole is corresponding with quantity and the position of the voice coil loudspeaker voice coil at the ball top that is fitted in vibrating diaphragm with the position.
In addition, preferred scheme is that driver element is four;
Phonate hole comprises the center phonate hole that is arranged on the mounting plane center and is arranged on the edge phonate hole of mounting plane marginal position; And the area of center phonate hole is greater than the area of edge phonate hole.
In addition, preferred scheme is, also comprise the FPCB connector that is electrically connected woofer internal circuit and external circuit, wherein, the FPCB connector is the T type, be clamped on the mounting plane at phonate hole edge, center, the part of FPCB connector is in mounting plane near a side of vibrating diaphragm, and another part is in mounting plane away from a side of vibrating diaphragm.
In addition, preferred scheme is that driver element is six;
Phonate hole comprises center phonate hole and edge phonate hole;
The center phonate hole is circular or square, between per four the adjacent installing holes that are arranged on;
The edge phonate hole is strip, is separately positioned between annular sidewall four limits and the installing hole.
In addition, preferably scheme is, the FPCB connector is bar shaped, and the middle part of FPCB connector is combined in the side that vibrating diaphragm is provided with voice coil loudspeaker voice coil, and the both ends of FPCB connector extend to mounting plane away from a side of described vibrating diaphragm by the edge phonate hole.
In addition, preferred scheme is, fits respectively in four bights at the ball top of vibrating diaphragm and fixes a voice coil unit.
In addition, preferred scheme is, the phonate hole gross area and described vibrating diaphragm at the ratio of frontal projected area on the shell in less than 0.9 number range.
In addition, preferred scheme is that ring portion adopts PU or silicon rubber to make; Described shell adopts aluminum alloy materials.
In addition, preferably scheme is, also has extension at the annular sidewall periphery, evenly is provided with the fixedly fixing hole of loud speaker on extension.
In addition, preferred scheme is that voice coil unit comprises centring disk, speech coil framework and voice coil loudspeaker voice coil;
Upper surface at institute's mounting plane is provided with the limiting section that limits centring disk.
From top technical scheme as can be known, flat woofer of the present invention, can obtain following beneficial effect:
1) at least four driver elements, four bights at the ball top of vibrating diaphragm arrange a driver element respectively, this structure adopts undersized voice coil unit and magnetic circuit unit to drive the vibrating diaphragm of large-sized woofer, can reduce the thickness of woofer, the size that can also save magnet reduces cost, improve the sensitivity of loud speaker, and this driver element structure that is arranged at the bight is conducive to the vibrating diaphragm of the driving woofer of balance;
2) air-flow that the woofer of four driver elements, vibrating diaphragm core produce is more, so the size of center phonate hole is greater than the size of edge phonate hole, and this structure is conducive to the circulation of air-flow;
3) shell adopts aluminum alloy materials, and the aluminum alloy materials strength ratio is bigger, and stability is high;
4) adopt FPCB(Flexible Printed Circuit Board, be called for short FPCB or FPC, flexible print wiring board) connect voice coil loudspeaker voice coil and external circuit, can save the space.
In order to realize above-mentioned and relevant purpose, one or more aspects of the present invention comprise the feature that the back will describe in detail and particularly point out in the claims.Following explanation and accompanying drawing describe some illustrative aspects of the present invention in detail.Yet, the indication of these aspects only be some modes that can use in the variety of way of principle of the present invention.In addition, the present invention is intended to comprise all these aspects and their equivalent.
Description of drawings
By the content of reference below in conjunction with the description of the drawings and claims, and along with understanding more comprehensively of the present invention, other purpose of the present invention and result will understand and easy to understand more.In the accompanying drawings:
Fig. 1 is the structural representation according to four driver elements of flat woofer of the embodiment of the invention;
Fig. 2 is six the structure of driving unit schematic diagrames of flat woofer according to the embodiment of the invention.
Fig. 3 is the structure of driving unit schematic diagram according to the embodiment of the invention;
Fig. 4 is four the driver element cutaway views of flat woofer according to the embodiment of the invention;
Fig. 5 is according to the shell of four driver elements of flat woofer of the embodiment of the invention and the reverse view of driver element;
Fig. 6 is the flat woofer application state figure according to the embodiment of the invention.
Reference numeral wherein comprises: ball top 1, ring portion 2, shell 3, installing hole 4, driver element 5, FPCB connector 6, center phonate hole 7, edge phonate hole 8, mounting plane 9, annular sidewall 10, voice coil loudspeaker voice coil 11, speech coil framework 12, centring disk 13, washer 14, magnet 15, T iron 16, magnetic gap 17, vibrating diaphragm 18, the back operatic tunes 19.
Identical label is indicated similar or corresponding feature or function in institute's drawings attached.
Embodiment
In the following description, for purposes of illustration, for the complete understanding to one or more embodiment is provided, many details have been set forth.Yet, clearly, can not have to realize these embodiment under the situation of these details yet.Below with reference to accompanying drawing specific embodiments of the invention are described in detail.
Woofer needs bigger vibrating diaphragm area, in order enough drivings to be provided for large-area vibrating diaphragm on the basis of restriction voice coil loudspeaker voice coil and magnet size, the present invention is from the angle of a plurality of separate driver elements of dispersed placement, make vibrating diaphragm be driven by a plurality of independently voice coil loudspeaker voice coils, each voice coil loudspeaker voice coil correspondence is magnetic circuit unit independently, thereby realizes the slimming of woofer with driver element laying structure more rationally and effectively.
Flat woofer provided by the invention comprises vibrating diaphragm, at least four separate driver elements and the shell that adopts aluminum alloy materials to make.
Wherein, vibrating diaphragm is rectangular configuration, comprises the ball top that is positioned at the center and the ring portion that is positioned at marginal position.Driver element comprises voice coil unit and the magnetic circuit unit corresponding with voice coil unit.Voice coil unit is fitted and is fixed on the ball top of vibrating diaphragm.
Shell comprises mounting plane and is arranged on annular sidewall around the mounting plane, and mounting plane is provided be used to accommodating fixedly the installing hole of magnetic circuit unit and the phonate hole of perforation mounting plane, and the upper side of annular sidewall is fixedlyed connected with the ring portion of vibrating diaphragm; Wherein, the quantity of installing hole is corresponding with quantity and the position of the voice coil loudspeaker voice coil at the ball top that is fitted in vibrating diaphragm with the position.
Voice coil unit is electrically connected with external circuit by the FPCB connector, that is to say, the FPCB connector is used for internal circuit and the external circuit of electric connection woofer.
Fig. 1 is the structural representation according to four driver elements of flat woofer of the embodiment of the invention.As shown in Figure 1, flat woofer provided by the invention comprises vibrating diaphragm, four driver elements 5 and shell 3.
The phonate hole that mounting plane 9 is provided with the installing hole 4 corresponding with driver element number and position and connects mounting plane, installing hole 4 is used for holding voice coil unit and installing and fixing magnetic circuit unit.In the installing hole 4 of mounting plane 9, be provided with the limiting section that limits the centring disk position.Installing hole 4 can be used for installing and fixing magnetic circuit unit.
Phonate hole comprises center phonate hole 7 and edge phonate hole 8, center phonate hole 7 is arranged on the center of mounting plane 9, corresponding with the vibrating diaphragm zone line, edge phonate hole 8 is arranged on the marginal position of mounting plane 9, be between annular sidewall 10 and the installing hole 4, for the whole erection plane, edge phonate hole 8 is arranged on the edge parallel with center phonate hole 7.
Preferably, the phonate hole gross area and vibrating diaphragm in less than 0.9 number range, to promote the smoothness of airflow, improve the acoustical behavior of this woofer at the ratio of frontal projected area on the shell.Wherein, vibrating diaphragm is vibrating diaphragm perpendicular to the frontal projected area on its direction of vibration at the area of orthographic projection on the shell.This structure can be guaranteed the smoothness of airflow, and can guarantee performances such as the intensity of shell and heat radiation.
For rectangular vibrating diaphragm, the zone in the middle of the vibrating diaphragm is bigger, and the air-flow of the generation of this part vibrating diaphragm is also more, therefore, position corresponding to this part on mounting plane 9 is provided with center phonate hole 7, and the size of center phonate hole 7 is bigger, flows into from here or flows out for more air-flow.
In the embodiment shown in fig. 1, edge phonate hole 7 is that strip and center phonate hole 8 are set in parallel on the mounting plane.Certainly, also can the edge phonate hole be designed to circle according to the demand of loudspeaker applications or other are irregularly shaped.
The upper side of annular sidewall 10 is fixedlyed connected with the ring portion 2 of vibrating diaphragm.
Four driver elements 5 shown in Fig. 1 embodiment adopt FPCB connector 6 to be electrically connected, and in the present embodiment, FPCB connector 6 is T shape, is clamped on the mounting plane 9 at center phonate hole 7 edges.Be provided with a plurality of pads (not marking at Fig. 1) on FPCB connector 6, pad is connected with external circuit with voice coil loudspeaker voice coil.
Because FPCB connector 6 is clamped on the mounting plane, therefore, the part of FPCB connector is in mounting plane 9 near a side of vibrating diaphragm, and another part is in mounting plane 9 away from a side of vibrating diaphragm.
Flat woofer also can be six driver elements, Fig. 2 is six the structure of driving unit schematic diagrames of flat woofer according to the embodiment of the invention, and flat woofer as shown in Figure 2 comprises vibrating diaphragm, six separate driver elements 5 and shell 3.
Comprise six driver elements in this flat woofer, four driver elements wherein are separately positioned on four bights at the ball top of vibrating diaphragm, two other voice coil unit is separately positioned on the voice coil unit in four bights formed one group or the two groups of opposite side, and equidistantly arrange with two voice coil loudspeaker voice coils on limit, place, form bigger actuating force, to act on more powerful electronic installation.
The phonate hole that mounting plane 9 is provided with the installing hole 4 corresponding with driver element number and position and connects mounting plane, installing hole 4 can be used for holding voice coil unit and installs and fixes magnetic circuit unit.Phonate hole comprises the center phonate hole 7 of two circles and the edge phonate hole 8 of four bar shapeds, and center phonate hole 7 is arranged between adjacent per four installing holes 4, and edge phonate hole 8 is four, is separately positioned between annular sidewall four limits and the installing hole 4.In the embodiment shown in Figure 2, edge phonate hole 7 is strip, and center phonate hole 8 is circular.Certainly, also can the edge phonate hole be designed to circle according to the demand of loudspeaker applications or other are irregularly shaped.
The upper side of annular sidewall 10 is fixedlyed connected with the ring portion 2 of vibrating diaphragm.Driver element 5 adopts FPCB connector 6 to be electrically connected, and FPCB connector 6 is provided with a plurality of pads (not marking at Fig. 2), and pad is connected with external circuit with voice coil loudspeaker voice coil.
In the embodiment of Fig. 2, structure for six driver elements, FPCB connector 6 is bar shaped, and the middle part of FPCB connector is combined in the side that vibrating diaphragm is provided with voice coil loudspeaker voice coil, and the both ends of FPCB connector extend to mounting plane away from a side of vibrating diaphragm by the edge phonate hole.In connection procedure, utilize the circuit between the solder joint, can connect flexibly in the mode of series, parallel or connection in series-parallel combination between the voice coil loudspeaker voice coil.
In addition, also be provided with fixing hole in shell 3 thin edges, fixing hole 11 is used for woofer and electronic installation is fixed.
In the embodiment of Fig. 1 and Fig. 2, the ball top 1 of vibrating diaphragm is rigid structure, and rigid structure can promote the vibrating diaphragm acoustic characteristic.In enforcement of the present invention, the ball top 1 of vibrating diaphragm also can be honeycomb or foaming body structure, and these two kinds of structures also can promote the vibrating diaphragm acoustic characteristic.The ring portion 2 of vibrating diaphragm adopts PU or silicon rubber to make.
In the embodiment of Fig. 1 and Fig. 2, vibrating diaphragm is rectangular configuration, can be rectangle, also can be square.Vibrating diaphragm comprises the ball top 1 of the vibrating diaphragm that is positioned at the center and is positioned at the ring portion 2 of the vibrating diaphragm of marginal position.
Because the driver element that the present invention adopts is more, therefore, in inventive embodiment, adopt the FPCB connector to be electrically connected driver element and external circuit, be compared to common side connecting conductor formula, adopt the FPCB connector can make simplified manufacturing process, save the inner space of loud speaker, and can improve the stability of loud speaker.
Structure for a plurality of driver elements, namely can be convenient to and the shell secure bond in order to make the FPCB connector, can connect a plurality of voice coil loudspeaker voice coils easily again, be provided with a plurality of pads and the circuit that is connected these pads on the surface of FPCB connector, the pad near vibrating diaphragm one side on voice coil loudspeaker voice coil and the FPCB connector is electrically connected by modes such as spot welding.In connection procedure, utilize the circuit between the solder joint, can connect flexibly in the mode of series, parallel or connection in series-parallel combination between the voice coil loudspeaker voice coil.Electronic installation (as liquid crystal TV set) is electrically connected with the side of FPCB connector away from mounting plane, and the FPCB connector is clamped and fastened on the mounting plane at phonate hole edge, center, also can take full advantage of the limited space of inside loudspeakers.
In four or six driver elements four be separately positioned on the vibrating diaphragm corresponding to the position at 1 edge, ball top, be conducive to the stable combination of the voice coil loudspeaker voice coil of driver element 5 and vibrating diaphragm, preferably, be positioned at four corner positions at ball top 1, make the driving that vibrating diaphragm can balance.This structure adopts undersized voice coil unit and magnetic circuit unit to drive the vibrating diaphragm of large-sized woofer, can reduce the thickness of woofer, and the size that can also save magnet reduces cost, and improves the sensitivity of woofer.This a plurality of driver element acts on vibrating diaphragm, actuating force is even, can guarantee enough big driving power on the basis that reduces the driver element volume, thereby make product slimming more, this performance can make flat woofer of the present invention be used for the bigger electronic installation of power, as liquid crystal TV set etc.
Fig. 3 and Fig. 4 are respectively structure of driving unit schematic diagram and the cutaway view according to the embodiment of the invention, and as shown in Figure 3 and Figure 4, driver element comprises voice coil unit and magnetic circuit unit.Wherein, voice coil unit comprises voice coil loudspeaker voice coil 11, speech coil framework 12, centring disk 13, and magnetic circuit unit comprises washer 14, magnet 15, T iron 16.
Voice coil loudspeaker voice coil 11 is fixing with vibrating diaphragm 18 combinations, and speech coil framework 12 is used for supporting voice coil loudspeaker voice coil 11, makes voice coil loudspeaker voice coil 11 be positioned at suitable position in magnetic gap 17.Centring disk 13 is used for fixedly voice coil loudspeaker voice coil 11, prevents that voice coil loudspeaker voice coil 11 from polarization taking place in the horizontal direction.
Driver element among Fig. 3 and the embodiment shown in Figure 4 is circular configuration, compares this structural design with the rectangle structure voice coil loudspeaker voice coil and can make the stressed more even of vibrating diaphragm 18.Washer 14 and T iron 16 are magnetic conduction construction, are used for revising the magnetic line of force; The magnetic gap 17 that forms between magnet 15 and the T iron 16 is used for holding voice coil loudspeaker voice coil 11.
Fig. 5 is according to the shell of four driver elements of flat woofer of the embodiment of the invention and the reverse view of driver element.As shown in Figure 5, shell 3 comprises mounting plane and annular sidewall, and four installing holes 4 and the phonate hole that holds driver element arranged at mounting plane; Wherein, shell 3 adopts aluminum alloy materials, and the aluminum alloy materials strength ratio is bigger, and stability is high.Phonate hole comprises center phonate hole 7 and edge phonate hole 8.
In the embodiment shown in fig. 5, center phonate hole 7 is arranged on the mounting plane position corresponding with the vibrating diaphragm zone line.For rectangular vibrating diaphragm, if at marginal position four voice coil loudspeaker voice coils are set, zone in the middle of the vibrating diaphragm can be bigger, the air-flow of the generation of this part vibrating diaphragm is also more, therefore, position corresponding to this part on the mounting plane is provided with center phonate hole 7, and the size of center phonate hole 7 is bigger, flows into from here or flows out for more air-flow.In addition, edge phonate hole 8 is arranged on the marginal position of the mounting plane corresponding with center phonate hole 7.
Also be provided with fixing hole (in Fig. 5, not marking) in four bights of shell 3 in addition, be used for fixedly woofer and electronic installation.
Fig. 6 is the flat woofer application state figure according to the embodiment of the invention.
As shown in Figure 6, because the mid portion of FPCB connector 6 is combined in the side that vibrating diaphragm is provided with voice coil loudspeaker voice coil, therefore, in speaker product, the mid portion of FPCB connector 6 is positioned at mounting plane near a side of vibrating diaphragm, and the both ends of FPCB connector 6 extend to mounting plane 9 away from a side of vibrating diaphragm from phonate hole.Phonate hole on the mounting plane makes the space of vibrating diaphragm 18 rear sides be communicated with the whole back operatic tunes 19, can add sound-absorbing material or gas absorption material in the operatic tunes 19 of back.Sound-absorbing material can be adjusted the acoustics curve, adjusts sound performance; The adsorbable gas of gas absorption material is adjusted the back operatic tunes 19 air pressure, thereby improves the equivalent volume of the back operatic tunes 19, promotes the low frequency sound effect of product.
By above-mentioned execution mode as can be seen, flat woofer provided by the invention adopts wherein four four bights that are separately positioned on the ball top of vibrating diaphragm of at least four driver elements, this structure adopts undersized voice coil loudspeaker voice coil and magnetic circuit system to drive the vibrating diaphragm of large-sized woofer, can reduce the thickness of woofer, the size that can also save magnet reduces cost, and improves the sensitivity of loud speaker; At least four driver elements act on vibrating diaphragm, and actuating force is even, and can guarantee that driving power is enough big, and product is thin; The air-flow that the ball top 1 of vibrating diaphragm produces is more, and big phonate hole is conducive to the circulation of air-flow, can increase the actuating force of loud speaker; Shell adopts aluminum alloy materials, and the aluminum alloy materials strength ratio is bigger, and stability is high; Adopt FPCB to connect voice coil loudspeaker voice coil and external circuit, can save the space.
As above in the mode of example the flat woofer that proposes according to the present invention has been described with reference to accompanying drawing.But, it will be appreciated by those skilled in the art that the flat woofer that proposes for the invention described above, can also make various improvement on the basis that does not break away from content of the present invention.Therefore, protection scope of the present invention should be determined by the content of appending claims.
Claims (10)
1. flat woofer comprises vibrating diaphragm, at least four separate driver elements and shell; Wherein,
Described vibrating diaphragm is rectangular configuration, comprises the ball top and the ring portion that is positioned at marginal position of the rigidity that is positioned at the center;
Described driver element comprises voice coil unit and the magnetic circuit unit corresponding with described voice coil unit,
Described voice coil unit is fitted and is fixed on the ball top of described vibrating diaphragm;
Described shell comprises mounting plane and is arranged on described mounting plane annular sidewall on every side, described mounting plane is provided be used to the installing hole of accommodating fixing described magnetic circuit unit and the phonate hole that connects described mounting plane, and the upper side of described annular sidewall is fixedlyed connected with the ring portion of described vibrating diaphragm; Wherein,
The quantity of described installing hole is corresponding with quantity and the position of the voice coil loudspeaker voice coil at the ball top that is fitted in described vibrating diaphragm with the position.
2. flat woofer as claimed in claim 1, wherein,
Described driver element is four;
Described phonate hole comprises the center phonate hole that is arranged on described mounting plane center and the edge phonate hole that is arranged on described mounting plane marginal position; And,
The area of described center phonate hole is greater than the area of described edge phonate hole.
3. flat woofer as claimed in claim 1 also comprises the internal circuit that is electrically connected described woofer and the FPCB connector of external circuit, wherein,
Described FPCB connector is the T type, be clamped on the described mounting plane at phonate hole edge, described center, the part of described FPCB connector is in described mounting plane near a side of described vibrating diaphragm, and another part is in described mounting plane away from a side of described vibrating diaphragm.
4. flat woofer as claimed in claim 1, wherein,
Described driver element is six;
Described phonate hole comprises center phonate hole and edge phonate hole;
Described center phonate hole is circular or square, between per four the adjacent installing holes that are arranged on;
Described edge phonate hole is strip, is separately positioned between described annular sidewall four limits and the described installing hole.
5. flat woofer as claimed in claim 4 also comprises the internal circuit that is electrically connected described woofer and the FPCB connector of external circuit, wherein,
Described FPCB connector is bar shaped, and the middle part of described FPCB connector is combined in the side that described vibrating diaphragm is provided with described voice coil loudspeaker voice coil, and the both ends of described FPCB connector extend to described mounting plane away from a side of described vibrating diaphragm by described edge phonate hole.
6. as each described flat woofer in the claim 1～5, wherein,
Fit respectively in four bights at the ball top of described vibrating diaphragm and to fix a voice coil unit.
7. as each described flat woofer in the claim 1～5, wherein,
The phonate hole gross area and described vibrating diaphragm at the ratio of frontal projected area on the shell in less than 0.9 number range.
8. as each described flat woofer in the claim 1～5, wherein,
The described ring employing PU of portion or silicon rubber are made;
Described shell adopts aluminum alloy materials.
9. as each described flat woofer in the claim 1～5, wherein,
Also have extension at described annular sidewall periphery, on described extension, evenly be provided with the fixing hole of fixing described loud speaker.
10. as each described flat woofer in the claim 1～5, wherein,
Described voice coil unit comprises centring disk, speech coil framework and voice coil loudspeaker voice coil;
Upper surface at described mounting plane is provided with the limiting section that limits described centring disk.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310167142.2A CN103281656B (en) | 2013-05-08 | 2013-05-08 | Flat woofer |
| KR1020157034779A KR101707083B1 (en) | 2013-05-08 | 2013-05-31 | Flat Plate Type Bass Loudspeaker |
| US14/889,703 US9788121B2 (en) | 2013-05-08 | 2013-05-31 | Flat plate-type bass loudspeaker |
| PCT/CN2013/076556 WO2014180015A1 (en) | 2013-05-08 | 2013-05-31 | Flat plate type bass loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310167142.2A CN103281656B (en) | 2013-05-08 | 2013-05-08 | Flat woofer |
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| Publication Number | Publication Date |
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| CN103281656A true CN103281656A (en) | 2013-09-04 |
| CN103281656B CN103281656B (en) | 2018-03-06 |
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| CN201310167142.2A Active CN103281656B (en) | 2013-05-08 | 2013-05-08 | Flat woofer |
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| US10440478B2 (en) | 2013-05-08 | 2019-10-08 | Goertek Inc. | Tablet woofer and electronic device using same |
| CN112511958A (en) * | 2020-12-18 | 2021-03-16 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound producing device |
| CN112511958B (en) * | 2020-12-18 | 2021-11-16 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound producing device |
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| CN103281656B (en) | 2018-03-06 |
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Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Applicant after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Applicant before: Goertek Inc. |
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