CN203368736U - Flat plat type bass loudspeaker - Google Patents
Flat plat type bass loudspeaker Download PDFInfo
- Publication number
- CN203368736U CN203368736U CN 201320245521 CN201320245521U CN203368736U CN 203368736 U CN203368736 U CN 203368736U CN 201320245521 CN201320245521 CN 201320245521 CN 201320245521 U CN201320245521 U CN 201320245521U CN 203368736 U CN203368736 U CN 203368736U
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- voice coil
- fpcb
- vibrating diaphragm
- mounting plane
- woofer
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Abstract
Provided in the utility model is a flat plat type bass loudspeaker comprising a vibrating diaphragm, at least four driving units independent of each other, and a housing. The vibrating diaphragm in a flat plate shape includes a ball top portion arranged in the center and a folded ring portion arranged at the edge. The driving units include independent voice coil units and magnetic circuit units corresponding to the voice coil units; and the four voice coil units are respectively contacted with and fixed at four corners of the ball top portion of the vibrating diaphragm. Installing holes that are used for accommodating and fixing the magnetic circuit units are arranged at the housing; and the upper side surface of the housing is fixedly combined with the edge of the folded ring portion. The flat plat type bass loudspeaker also includes flexible printed circuit boards (FPCB) communicating an internal circuit and an external circuit of the loudspeaker; the FPCBs are arranged at the two sides of the housing. One sides, approaching the voice coil units, of the FPCBs are electrically connected with voice coil leads; and the other sides, far away from the voice coil units, are electrically connected with the external circuit of the loudspeaker. With the flat plat type bass loudspeaker, problems of heavy weight of the voice coils and performance excess of the magnets can be solved.
Description
Technical field
The utility model relates to the acoustic-electric technical field, more specifically, relates to a kind of flat woofer.
Background technology
Along with social progress and the development of technology, in recent years, the electronic product volumes such as television set constantly reduce slimming increasingly, 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 reducing, 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 larger also thicker.The woofer of this structure, the thickness of product is larger, can't meet the current electronic product demand of slimming increasingly, and practicality is not strong.
And woofer has larger bore usually in order to guarantee its low frequency sound effect, has larger vibrating diaphragm area.If adopt a tabular vibrating diaphragm, be combined with the structure (voice coil loudspeaker voice coil need to 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 larger, and the coiling difficulty is more yielding.In addition, the magnet size of existing woofer is larger, and during the slimming application, washer and basin frame thickness are all less, and magnetic circuit system is easily saturated, and magnet performance surplus, cause waste, and cost is higher.
Based on above factor, need to the product of traditional structure be improved.
The utility model content
In view of the above problems, the purpose of this utility model is to provide a kind of flat woofer, and to realize the slimming of woofer, and the solution voice coil loudspeaker voice coil is thick and heavy and the problem of magnet performance surplus.
The utility model provides a kind of flat woofer, comprises vibrating diaphragm, four separate driver elements and shell; Wherein,
At least four separate driver elements and shell; Wherein,
Vibrating diaphragm is tabular, comprises the ball top and the ring section that is positioned at marginal position of the rigidity that is positioned at center;
Driver element comprises independently voice coil unit and the magnetic circuit unit corresponding with voice coil unit;
Fit respectively four bights at the ball top that is fixed on vibrating diaphragm of four voice coil units wherein;
On shell, be provided with for accommodating the fixedly installing hole of magnetic circuit unit, the edge secure bond of the upper side of shell and ring section; And,
Flat woofer also comprises the internal circuit that is communicated with loud speaker and the FPCB of external circuit, FPCB is arranged on the both sides of shell, wherein, FPCB is electrically connected to voice coil leads near a side of voice coil unit, away from a side of described voice coil unit, with the external circuit of described loud speaker, is electrically connected to.
In addition, preferred structure is that shell comprises the annular sidewall around mounting plane and mounting plane, is provided with the phonate hole that connects mounting plane on mounting plane; FPCB is connected the structure of mounting plane both sides by phonate hole.
In addition, preferred structure is, FPCB with shell by mode secure bond bonding or that engage.
In addition, preferred structure is that phonate hole comprises the center phonate hole that is arranged on the mounting plane center.
In addition, preferably structure is, FPCB is clamped on the mounting plane at phonate hole edge, center, and the part of FPCB is the side near vibrating diaphragm in mounting plane, and another part is the side away from vibrating diaphragm in mounting plane.
In addition, preferably structure is, FPCB comprises separate two parts, and every part is electrically connected to two contiguous voice coil units.
In addition, preferred structure is that the tow sides of FPCB are provided with pad, are arranged on the double-edged pad of FPCB corresponding one by one respectively; Wherein,
The pad that is arranged on the FPCB front is electrically connected to each voice coil unit respectively, and, control the connection in series-parallel relation between voice coil unit by the pad that is arranged on the FPCB reverse side.
In addition, preferred structure is that FPCB adopts the polyimide copper clad lamination base material.
In addition, preferred structure is, the edge of annular sidewall is provided with the fixedly fixing hole of loud speaker and electronic installation.
In addition, preferred structure is that the ball top is honeycomb or foaming body structure.
In addition, preferred structure is that shell is the aluminum alloy materials shell.
From top technical scheme, flat woofer of the present utility model, can obtain following beneficial effect:
1) four driver elements are separately positioned on four bights at the ball top of vibrating diaphragm, 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 costs, improve the sensitivity of loud speaker, and this driver element structure that is arranged at bight is conducive to the vibrating diaphragm of the driving woofer of balance;
2) shell adopts aluminum alloy materials, and the aluminum alloy materials strength ratio is larger, and stability is high;
3) 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, only be incorporated on installed surface, utilize fully the gap between magnetic circuit unit on installed surface, take full advantage of the inner space of woofer, make product thinner.
The accompanying drawing explanation
By reference to the content below in conjunction with the description of the drawings and claims, and, along with understanding more comprehensively of the present utility model, other purpose of the present utility model and result will be understood and easy to understand more.In the accompanying drawings:
Fig. 1 is the structural representation according to the flat woofer of the utility model embodiment;
Fig. 2 is the FPCB structural representation according to the utility model embodiment;
Fig. 3-1 is four voice coil loudspeaker voice coil connection diagrams according to the utility model embodiment;
Fig. 3-2 are four voice coil loudspeaker voice coil connection diagrams according to another embodiment of the utility model;
Fig. 4 is according to the FPCB of the utility model embodiment and outer casing frontispiece schematic diagram;
Fig. 5 is according to the FPCB of the utility model embodiment and shell reverse side schematic diagram.
Reference numeral wherein comprises: ball top 1, ring section 2, shell 3, installing hole 4, driver element 5, FPCB6, center phonate hole 7, edge phonate hole 8, mounting plane 9, annular sidewall 10, pad 11, FPCB front surface A, FPCB reverse side B.
In institute's drawings attached, identical label is indicated similar or corresponding feature or function.
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 be in the situation that do not have these details to realize these embodiment yet.Below with reference to accompanying drawing, specific embodiment of the utility model is described in detail.
Woofer needs larger vibrating diaphragm area, for enough drivings being provided on the basis in restriction voice coil loudspeaker voice coil and magnet size large-area vibrating diaphragm, the utility model 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 miniaturization of woofer with driver element laying structure more rationally and effectively.
Fig. 1 is the structural representation according to the flat woofer of the utility model embodiment.
As shown in Figure 1, the flat woofer that the utility model provides, comprise vibrating diaphragm, four separate driver elements 5 and shell 3.
Wherein, vibrating diaphragm is tabular, and vibrating diaphragm comprises the ball top 1 and the ring section 2 that is positioned at the vibrating diaphragm of marginal position of the rigidity of the vibrating diaphragm that is positioned at center.In order to increase effective vibration area of vibrating diaphragm, in the utility model, the limited proportion of ball top 1 effective radiating area equivalent redius and ring section width in 4～15 scope, i.e. 4<effective radiating area equivalent redius: ring section width<15.
The ball top 1 of vibrating diaphragm adopts aluminum alloy materials to make, and to ensure its hardness and rigid structure, rigid structure can promote the vibrating diaphragm acoustic characteristic.In enforcement of the present utility model, the ball top 1 of vibrating diaphragm can be also honeycomb or foaming body structure, and these two kinds of structures also can promote the vibrating diaphragm acoustic characteristic.The ring section 2 of vibrating diaphragm can adopt PU (Polyurethane, polyurethanes) or silicon rubber to make.
Driver element 5 comprises voice coil unit and magnetic circuit unit, and each voice coil unit is corresponding with each magnetic circuit unit.If comprise four driver elements in this flat woofer, four driver elements 5 can be separately positioned on to four bights at the ball top 1 of vibrating diaphragm; If comprise four above driver elements in this flat woofer, the voice coil unit of driver element evenly can be arranged on to the peripheral position at the ball top 1 of vibrating diaphragm, also can be arranged on the ball top in the irregular alignment mode of disperseing, to avoid resonance.
Driver element is circular, comprises circular voice coil unit and circular magnetic circuit unit.Wherein, voice coil unit comprises voice coil loudspeaker voice coil, speech coil framework, centring disk, and magnetic circuit unit comprises washer, magnet, T iron.Voice coil loudspeaker voice coil is combined fixing with vibrating diaphragm, speech coil framework, for supporting voice coil loudspeaker voice coil, makes voice coil loudspeaker voice coil be positioned at suitable position in magnetic gap.Centring disk is used for fixedly voice coil loudspeaker voice coil, prevents that voice coil loudspeaker voice coil from polarization occurring in the horizontal direction.
In embodiment of the present utility model, driver element is circular configuration, compares this structural design with rectangular voice coil loudspeaker voice coil and can make the stressed more even of vibrating diaphragm.Washer and T iron are magnetic conduction construction, for revising the magnetic line of force; The magnetic gap formed between magnet and T iron is for holding voice coil loudspeaker voice coil.
In embodiment of the present utility model, driver element 5 is four positions that are separately positioned on corresponding ball top 1 on vibrating diaphragm, is conducive to the stable combination of the voice coil loudspeaker voice coil of driver element 5 and vibrating diaphragm, preferred, be positioned at four bights 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 costs, and improves the sensitivity of woofer.Four driver elements 5 act on vibrating diaphragm, actuating force is even, can on the basis that reduces the driver element volume, guarantee enough large driving power, thereby make product slimming more, this performance can make the flat woofer of the present utility model electronic installation larger for power, as liquid crystal TV set etc.
Shell 3 adopts aluminum alloy materials, and the aluminum alloy materials strength ratio is larger, and stability is high.
The phonate hole that is provided with the installing hole 4 corresponding with driver element number and position and connects mounting plane on mounting plane 9, be provided with the limiting section that limits the centring disk position in the installing hole 4 of mounting plane 9, installing hole 4 is for holding voice coil unit and fixedly magnetic circuit unit being installed.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 between annular sidewall 10 and installing hole 4, for whole mounting plane, edge phonate hole 8 is arranged on the edge corresponding with center phonate hole 7.
The size of center phonate hole 7 is greater than the size of edge phonate hole 8, and the ratio of the gross area of phonate hole and the effective radiating area of flat woofer is 0.07～0.6; The air-flow of asking bottom 1 to produce of vibrating diaphragm is more, and large phonate hole is conducive to the circulation of air-flow.
For rectangular vibrating diaphragm, the zone in the middle of vibrating diaphragm is larger, 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 larger, for more air-flow, flows into from here or flows out.
In the embodiment shown in fig. 1, edge phonate hole 7 is set in parallel on mounting plane for strip ，He center phonate hole 8.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 the annular sidewall 10 of shell and the ring section of vibrating diaphragm 2 edge secure bond.
Flat woofer also comprises the internal circuit that is communicated with loud speaker and the FPCB6 of external circuit.
Fig. 2 is the FPCB structural representation according to the utility model embodiment.As shown in Figure 2, FPCB is T shape structure, comprises separate two parts, and every part is electrically connected to two contiguous voice coil units.The front surface A of FPCB6 and reverse side B are provided with pad 11, be arranged on the double-edged pad 11 of FPCB corresponding one by one respectively, the pad 11 that is arranged on the FPCB front surface A is electrically connected to each voice coil unit respectively, and, be connected with external circuit by the pad 11 that is arranged on FPCB reverse side B, control the connection in series-parallel relation between voice coil unit.That is: FPCB is electrically connected to voice coil leads near the pad 11 in a side front of voice coil unit, away from the pad 11 of a side reverse side of voice coil unit, with the external circuit of loud speaker, is electrically connected to.
It should be noted that, the concrete shape of FPCB can be adjusted according to the conditions of demand of electronic installation, and the circuit configuration of pad also is not limited to situation shown in Fig. 2, can select according to concrete product demand other arrangement mode.
In the process that is electrically connected to voice coil loudspeaker voice coil, utilize the circuit between pad, between voice coil loudspeaker voice coil, can connect flexibly in the mode of series, parallel or connection in series-parallel combination.Below only with the electric connection mode of two kinds of voice coil units, carry out exemplary illustration.
Fig. 3-1 is four voice coil loudspeaker voice coil connection diagrams according to the utility model embodiment.As shown in Fig. 3-1, two voice coil units series connection just belonged to respectively on same straight line is two branch roads, then by FPCB by two branch circuit parallel connections.
Fig. 3-2 are four voice coil loudspeaker voice coil connection diagrams according to another embodiment of the utility model.As shown in Fig. 3-2, the two voice coil loudspeaker voice coil series connection that will be positioned at respectively same diagonal bight are two branch roads, then pass through just two branch circuit parallel connections of FPCB.
Electronic installation (as LCD TV) is electrically connected to away from a side of mounting plane with FPCB, and FPCB is clamped and fastened on the mounting plane at phonate hole edge, center.
Wherein, in an embodiment of the present utility model, FPCB adopts the polyimide copper clad lamination base material, is rigid structure, with existing plastic construction, compares, and the polyimide copper clad lamination base material has stronger elasticity, is not easy fracture.
Fig. 4 and Fig. 5 are respectively according to the FPCB of the utility model embodiment and outer casing frontispiece and reverse side schematic diagram.As shown in Figure 4 and Figure 5, FPCB6 is arranged on the both sides of shell 3, and wherein, FPCB is electrically connected to voice coil leads near a side of voice coil unit, away from a side of voice coil unit, with the external circuit of loud speaker, is electrically connected to.FPCB6 is connected the structure of mounting plane 9 both sides by phonate hole.And, FPCB6 with shell 3 by mode secure bond bonding or that engage.
In the present embodiment, FPCB6 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. 4 and Fig. 5) on FPCB6, pad is connected with external circuit with voice coil unit.
Because FPCB6 is clamped on mounting plane, so the side of the part of FPCB6 in mounting plane 9 close vibrating diaphragms, another part is the side away from vibrating diaphragm in mounting plane 9.
Because the driver element that the utility model adopts is more, therefore, in embodiment of the present utility model, adopt FPCB to be electrically connected to driver element and external circuit, be compared to common side connecting conductor formula, adopt FPCB can make simplified manufacturing process, FPCB only is incorporated on mounting plane, has utilized fully the gap between magnetic circuit unit on the mounting plane, utilizes fully the inner space of woofer, save the inner space of loud speaker, and can improve the stability of loud speaker.In addition, the quantity of driver element is not limited to four, also can be six or more, all can adopt this FPCB to be electrically connected to.
By above-mentioned execution mode, can find out, flat woofer of the present utility model, adopt four driver elements to be separately positioned on vibrating diaphragm the position corresponding to ball top 1, 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 bights 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 costs, and improves the sensitivity of woofer; Four driver elements act on vibrating diaphragm, and actuating force is even, and can guarantee that driving power is enough large, and product is thin; Shell adopts aluminum alloy materials, and the aluminum alloy materials strength ratio is larger, and stability is high; 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, only be incorporated on mounting plane, utilize fully the gap between magnetic circuit unit on mounting plane, utilize fully the inner space of woofer, make product thinner; FPCB adopts rigid structure, with existing plastic construction, compares, and the polyimide copper clad lamination base material has stronger elasticity, is not easy fracture.
Accompanying drawing has been described according to the flat woofer the utility model proposes in the mode of example above with reference to.But, it will be appreciated by those skilled in the art that the flat woofer proposed for above-mentioned the utility model, can also on the basis that does not break away from the utility model content, make various improvement.Therefore, protection range of the present utility model should be determined by the content of appending claims.
Claims (10)
1. a flat woofer, comprise vibrating diaphragm, at least four separate driver elements and shell; It is characterized in that,
Described vibrating diaphragm is tabular, comprises the ball top and the ring section that is positioned at marginal position of the rigidity that is positioned at center;
Described driver element comprises independently voice coil unit and the magnetic circuit unit corresponding with described voice coil unit;
Fit respectively four bights at the ball top that is fixed on described vibrating diaphragm of four described voice coil units wherein;
Be provided with for accommodating the installing hole of fixing described magnetic circuit unit the edge secure bond of the upper side of described shell and described ring section on described shell; And,
Described flat woofer also comprises the internal circuit that is communicated with described loud speaker and the FPCB of external circuit, described FPCB is arranged on the both sides of described shell, wherein, described FPCB is electrically connected to voice coil leads near a side of described voice coil unit, away from a side of described voice coil unit, with the external circuit of described loud speaker, is electrically connected to.
2. flat woofer as claimed in claim 1, is characterized in that,
Described shell comprises the annular sidewall around mounting plane and described mounting plane, is provided with the phonate hole that connects described mounting plane on described mounting plane;
Described FPCB is connected the structure of described mounting plane both sides by described phonate hole.
3. flat woofer as claimed in claim 1, is characterized in that,
Described FPCB with described shell by mode secure bond bonding or that engage.
4. flat woofer as claimed in claim 2, is characterized in that,
Described phonate hole comprises the center phonate hole that is arranged on described mounting plane center;
Described FPCB is clamped on the described mounting plane at phonate hole edge, described center, and the part of described FPCB is the side near described vibrating diaphragm in described mounting plane, and another part is the side away from described vibrating diaphragm in described mounting plane.
5. flat woofer as claimed in claim 1, is characterized in that,
Described FPCB comprises separate two parts, and every part is electrically connected to two contiguous voice coil units.
6. flat woofer as described as any one in claim 1～5, is characterized in that,
The tow sides of described FPCB are provided with pad, are arranged on the double-edged pad of described FPCB corresponding one by one respectively; Wherein,
The pad that is arranged on described FPCB front is electrically connected to each voice coil unit respectively, and, control the connection in series-parallel relation between described voice coil unit by the pad that is arranged on described FPCB reverse side.
7. flat woofer as claimed in claim 6, is characterized in that,
Described FPCB adopts the polyimide copper clad lamination base material.
8. flat woofer as claimed in claim 2, is characterized in that,
The edge of described annular sidewall is provided with the fixing hole of fixing described loud speaker and electronic installation.
9. flat woofer as claimed in claim 6, is characterized in that,
Described ball top is honeycomb or foaming body structure.
10. flat woofer as claimed in claim 1, is characterized in that,
Described shell is the aluminum alloy materials shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320245521 CN203368736U (en) | 2013-05-08 | 2013-05-08 | Flat plat type bass loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320245521 CN203368736U (en) | 2013-05-08 | 2013-05-08 | Flat plat type bass loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203368736U true CN203368736U (en) | 2013-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320245521 Withdrawn - After Issue CN203368736U (en) | 2013-05-08 | 2013-05-08 | Flat plat type bass loudspeaker |
Country Status (1)
| Country | Link |
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| CN (1) | CN203368736U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014180014A1 (en) * | 2013-05-08 | 2014-11-13 | 歌尔声学股份有限公司 | Tablet woofer and electronic device using same |
| CN108886656A (en) * | 2016-03-16 | 2018-11-23 | 奥音科技（镇江）有限公司 | Vibrating diaphragm for loudspeaker |
| CN115086843A (en) * | 2021-03-16 | 2022-09-20 | 华为技术有限公司 | Speaker and electronic equipment |
-
2013
- 2013-05-08 CN CN 201320245521 patent/CN203368736U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014180014A1 (en) * | 2013-05-08 | 2014-11-13 | 歌尔声学股份有限公司 | Tablet woofer and electronic device using same |
| US9769572B2 (en) | 2013-05-08 | 2017-09-19 | Goertek Inc. | Tablet woofer and electronic device using same |
| US10440478B2 (en) | 2013-05-08 | 2019-10-08 | Goertek Inc. | Tablet woofer and electronic device using same |
| CN108886656A (en) * | 2016-03-16 | 2018-11-23 | 奥音科技（镇江）有限公司 | Vibrating diaphragm for loudspeaker |
| CN108886656B (en) * | 2016-03-16 | 2021-03-02 | 奥音科技（镇江）有限公司 | Loudspeaker |
| CN115086843A (en) * | 2021-03-16 | 2022-09-20 | 华为技术有限公司 | Speaker and electronic equipment |
| CN115086843B (en) * | 2021-03-16 | 2023-11-28 | 华为技术有限公司 | Speaker and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131225 Effective date of abandoning: 20160810 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |