CN208489984U - Voice coil assemblies and loudspeaker - Google Patents
Voice coil assemblies and loudspeaker Download PDFInfo
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- CN208489984U CN208489984U CN201821269866.2U CN201821269866U CN208489984U CN 208489984 U CN208489984 U CN 208489984U CN 201821269866 U CN201821269866 U CN 201821269866U CN 208489984 U CN208489984 U CN 208489984U
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Abstract
The utility model provides a kind of Voice coil assemblies and loudspeaker, the Voice coil assemblies include speech coil framework and the voice coil on the speech coil framework, the voice coil is connected by the speech coil framework with the bottom of vibrating diaphragm, the main body of the speech coil framework is hollow rectangular cylindrical structure, the voice coil is formed by monolithic body band coiling, monolithic body band Formation cross-section on the periphery of the speech coil framework is the voice coil of rectangular ring, one end of the speech coil framework is equipped with the voice coil mounting portion for winding the voice coil, the other end of the speech coil framework is equipped with the vibrating diaphragm interconnecting piece being connected with the bottom of the vibrating diaphragm, the both ends of the voice coil mounting portion are equipped with limiting section.The voice coil of the utility model is wound using the flexible circuit board or metallic foil of printing, and high temperature resistant, heat dissipation area are big and easy processing forms；Speech coil framework is sturdy and durable, occupy little space, high temperature resistant, thermal coefficient are high, precision size, can be improved the acoustical behavior of loudspeaker.
Description
Technical field
The utility model relates to dynamic loudspeaker technical fields, more particularly to a kind of Voice coil assemblies and loudspeaker.
Background technique
Dynamic loudspeaker generally includes field system and vibrational system, and vibrational system includes voice coil and vibrating diaphragm, and the one of voice coil
End is connected with vibrating diaphragm.Voice coil usually is enclosed to set by an enameled wire to be stacked, and is in magnetic field environment, and the motion source of loudspeaker comes
From voice coil.When importing electric current in voice coil, voice coil cutting magnetic line under magnetic fields generates mechanical force, makees piston type along axial direction
Movement so that vibrating diaphragm be driven to make front-rear reciprocation movement, and then pushes surrounding air movement, generates sound wave.
It is the critical component for determining speaker performance, the performance meeting of voice coil as the voice coil of one of loudspeaker significant components
Influence sound pressure frequency characteristic, efficiency, distortion, load power, service life and the transient response etc. of loudspeaker.Influence voice coil performance
Factor includes making material, coil winding, the voice coil shape etc. of voice coil.Traditional voice coil generally uses metal enamel conductor (copper wire
Or aluminum steel) wind, line footpath, circle number, the length of metal wire will affect the performance of voice coil.Metal wire is too short, encloses the very few meeting of number
Reduce electromagnetic induction LVCAnd magnetic force BL cannot be made full use of and it is made to be short of power；Metal wire is too long, circle number is excessive, impedance REValue
It can be increased with the quality of voice coil, reduce electric current；If in order to reduce impedance REAnd line footpath is increased, the weight of voice coil will continue to increase
And then influence whether the Q of loudspeakerES、QMS、QTS, this will lead to bigger problem.In addition, heat is mainly derived from loudspeaker
Voice coil, metal enamel conductor heat dissipation effect is poor, and heat dissipation is unsmooth to cause voice coil degumming, short circuit or breaking-up；Voice coil is in motion process
In non-linear shift can generate harmonic distortion, adjust distortion, influence speaker performance.
In addition, supporting mechanism of the speech coil framework as voice coil, also affects the performance of loudspeaker.Existing speech coil framework is big
It is mostly round, it is hand-made using paper tube, aluminium alloy or glass-fiber-fabric, technique is coarse, work it is poor it is larger, precision is lower, assembly is inconvenient.
Utility model content
The purpose of this utility model is at least to solve one of drawbacks described above and deficiency, which is by the following technical programs
It realizes.
The utility model provides a kind of Voice coil assemblies, the sound including speech coil framework and on the speech coil framework
Circle, the voice coil are connected by the speech coil framework with the bottom of vibrating diaphragm, and the main body of the speech coil framework is hollow rectangle
Tubular structure, the voice coil are formed by monolithic body band coiling, and the monolithic body band is wound on the periphery of the speech coil framework
Upper Formation cross-section is the voice coil of rectangular ring, and one end of the speech coil framework is equipped with the voice coil for winding the voice coil and pacifies
Dress portion, the other end of the speech coil framework are equipped with the vibrating diaphragm interconnecting piece being connected with the bottom of the vibrating diaphragm, the voice coil installation
The both ends in portion are equipped with limiting section.
Further, four sides of the rectangular cylindrical structure be curve, the rectangular cylindrical structure quadrangle be fillet, institute
Four facades for stating the side wall of speech coil framework are outwardly projecting micro- curved surface, pass through round and smooth curved surface between the adjacent facade
Transition, the quadrangle of the rectangular section of the voice coil are fillet.
Further, the voice coil mounting portion is equipped with multiple through-holes, and multiple through-holes are equably arranged in the sound
It encloses on the annular sidewall of mounting portion.
Preferably, the monolithic body band is the flexible circuit board of printing or the metallic foil of single-sided insulation.
Further, the flexible circuit board includes the insulator being fitted on the speech coil framework and is attached to described
Metallic conductor on insulator.
Further, multiple metallic conductors are provided with, and multiple metallic conductors are along the speech coil framework
Axial direction longitudinal direction close-packed arrays.
Further, one end of the voice coil is equipped with lead, and one end of the lead is fixedly connected with the voice coil, described
The other end of lead is free end, and the free end is connect with the lead wire circuit plate for the bottom that the vibrating diaphragm is arranged in.
Further, the vibrating diaphragm further includes the vibrating diaphragm chassis to match with the shape of the bottom of the vibrating diaphragm, institute
The bottom that vibrating diaphragm chassis is pasted onto the vibrating diaphragm is stated, the vibrating diaphragm chassis is equipped with pair being connected with the speech coil framework
The lead wire circuit plate for connecing installing port and being connected with the lead.
Preferably, the speech coil framework is using heat-resisting material and by being integrally machined molding, the heat-resisting material packet
Include high temperature resistant injected plastics material or light ceramic material.
The utility model additionally provides a kind of loudspeaker including at least one above-mentioned Voice coil assemblies.
The advantages of the utility model, is as follows:
(1) voice coil of the utility model is wound using the flexible circuit board or metallic foil of printing, voice coil high temperature resistant,
Heat dissipation area is big and easy processing forms, and is able to ascend the heat dissipation effect of voice coil and the power of loudspeaker, promotes speaker performance
And service life.
(2) the speech coil framework high temperature resistant of the utility model, thermal coefficient be high, precision size and by mold processing it is integrated at
Type can reduce the non-linear of piston motion and improve the acoustical behavior of loudspeaker；Speech coil framework is equipped with heat release hole, can subtract
The weight of schwa ring framework again can rapid cooling；In addition, the speech coil framework using rectangular configuration occupies little space, quick side is assembled
Just, it can reduce rigging error rate.
(3) the utility model can be by reasonably controlling the resistance R of voice coilEWith inductance LVCAnd then influence QES、QTS, increase
Add its power and efficiency eta0, reduce resonance frequency fs, promote speaker performance.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as practical to this
Novel limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.
Fig. 1 is the structural schematic diagram of Voice coil assemblies provided by the embodiment of the utility model；
Fig. 2 is the structural schematic diagram of voice coil provided by the embodiment of the utility model (winding is completed)；
Fig. 3 is the structural schematic diagram (not winding) of voice coil provided by the embodiment of the utility model；
Fig. 4 is the structural schematic diagram for the speech coil framework that utility model embodiment provides；
Fig. 5 is pre-assembled schematic diagram of the Voice coil assemblies provided by the embodiment of the utility model on vibrating diaphragm；
Fig. 6 is the assembly completion schematic diagram of Voice coil assemblies provided by the embodiment of the utility model and vibrating diaphragm；
Appended drawing reference is as follows in figure:
10- Voice coil assemblies 20- vibrating diaphragm
1- voice coil 2- speech coil framework
11- metallic conductor 12- insulator
13- lead 21- voice coil mounting portion 22- vibrating diaphragm interconnecting piece 23- limiting section
24- through-hole 25- facade
26- curved surface 201- vibrating diaphragm chassis
2011- installing port 2012- lead wire circuit plate
221- groove
Specific embodiment
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although showing this public affairs in attached drawing
The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here
The mode of applying is limited.It is to be able to thoroughly understand the disclosure on the contrary, providing these embodiments, and can be by this public affairs
The range opened is fully disclosed to those skilled in the art.
Carry out the explanation of following term first in order to the understanding to the application:
(1)QESRefer to the electric Q value at loudspeaker unit resonance frequency, i.e. voice coil D.C. resistance REIt is moved at resonance frequency fs
The ratio of raw impedance.QESThe electrical qualities of voice coil itself are specified, are mainly shown as D.C. resistance REWith inductance LVCAnd anti-electricity
Kinetic potential RESThe electrical damping of formation.
(2)QMSRefer to the mechanical q-value at loudspeaker unit resonance frequency, i.e. the mechanical loss impedance of unit supports system
RMSEquivalent resistance and resonance frequency fs at motional impedance ratio.QMSSpecify the quality and suspension system of voice coil itself
The mechanical mechanical resistance R of (overhanging portion including voice coil, vibrating diaphragm, centring disk and ring)MS。
(3)QTSRefer to total Q value at loudspeaker unit resonance frequency, i.e. QESAnd QMSParallel value,
According to formula QTS=(QES×QMS)÷(QES+QMS)；The formula shows QTSBy QESAnd QMSIt influences.
QESLower i.e. electrical damping is smaller, output power N0And efficiency eta0It is higher, Q can be effectively reducedTS；Reduce QMSAlthough
Also Q can be effectively reducedTS, but QMSIt is not more lower better.QMSThe too low suspension system that will cause underdamping and make loudspeaker is too
Decaying active and that generation delay, i.e. signal stop rear-suspending system is slow, continues to vibrate still according to inertia force；QMSToo Gao Ze
It will cause overdamp (the excessive or quality of rigidity is overweight) and vibrate whole oscillating components of loudspeaker and be limited, influence efficiency eta0With
Resonance frequency fs。
Fig. 1 to Fig. 6 shows the structural schematic diagram for the Voice coil assemblies that embodiment according to the present utility model provides.Such as figure
1 to shown in Fig. 6, and Voice coil assemblies 10 include speech coil framework 2 and the voice coil 1 on speech coil framework 2, and voice coil 1 passes through voice coil bone
Frame 2 is connected with the bottom of vibrating diaphragm 20, and Voice coil assemblies 10 and the fixed rear overhang of vibrating diaphragm 20 are set in magnetic gap, and voice coil 1 is in magnetic fields
Lower cutting magnetic line generates mechanical force, makees piston like motion along axial direction, so that vibrating diaphragm 20 be driven to make front-rear reciprocation movement, and then pushes away
Dynamic surrounding air movement, generates sound wave.
The main body of speech coil framework 2 is hollow rectangular cylindrical structure, and voice coil 1 is formed by monolithic body band coiling, monolithic body
Band Formation cross-section on the periphery of speech coil framework 2 is the voice coil 1 of rectangular ring, and monolithic body band can be along voice coil bone
The periphery multilayer-wound of frame 2, one end of speech coil framework 2 are equipped with the voice coil mounting portion 21 for winding voice coil 1, speech coil framework 2
The other end is equipped with the vibrating diaphragm interconnecting piece 22 being connected with the bottom of vibrating diaphragm 20, and the both ends of voice coil mounting portion 21 are equipped with and are used for
It is, for example, the circumferential projection along the periphery of speech coil framework 2 circumferentially, limiting section to the limiting section 211 that voice coil 1 is limited
211 can prevent voice coil 1 from falling off.
In specific implementation, monolithic body band is high-temperature-resistant flexible conductive material, and the flexible circuit board of printing can be used
(FPC) or metallic foil.Specifically, flexible circuit board includes the insulator 12 being fitted on speech coil framework 2 and is attached to absolutely
Metallic conductor 11 on edge body (PI) 12, insulator (PI) 12 is tightly attached on speech coil framework 2 when winding.Metallic foil is that single side is exhausted
The metal foil of edge, and the one side of metallic foil insulation is close to speech coil framework 2, and copper foil or aluminium foil can be used in metallic foil.
It as shown in Figures 2 and 3, can be along the axial direction longitudinal direction of speech coil framework 2 when being wound using the flexible circuit board of printing
Multiple metallic conductors 11 (being 5 in the present embodiment) are arranged.The tiling of metallic conductor 11 expands into elongated banded structure,
On the longitudinal direction of flexible circuit board monolithic, multiple arrangements of metallic conductor 11 are closely attached on insulator (PI) 12, finally
Voice coil 1 is formed on the voice coil mounting portion 21 of 2 periphery of speech coil framework, between existing centainly between multiple metallic conductors 11
Gap.
Monolithic body band can wind multilayer along the periphery of speech coil framework 2, and the thickness of single layer monolithic body band be about 15 μm~
35 μm, after coiling and molding with a thickness of 0.6mm~1.2mm.The voice coil 1 wound using laminated structure, can increase voice coil length, root
According to formula F=BLI it is found that the driving force that voice coil 1 is subject to increases, sound transformation efficiency can be improved, wherein B is the magnetic in magnetic gap
Flux density, L are voice coil length, I is electric current.Since monolithic body beam thickness is thin, heat dissipation area is big, dissipating for voice coil 1 can be improved
Thermal effect, the risk for reducing 1 short circuit of voice coil or damaging；Meanwhile the easy coiling process of flexible monolithic body band, it can be made closely
It is fitted on speech coil framework 2, promotes the power of loudspeaker.
In addition, the edge of the side of voice coil 1 is equipped with lead 13, one end of lead 13 is fixedly connected with voice coil 1, and lead 13 wraps
Lead and outer lead are included, lead is input terminal, outer lead is output end, lead and outer lead from the same side of voice coil 1
It is close to the inner and outer wall of speech coil framework 2 respectively and merges at groove 221 draw；The other end of lead 13 is free end, with
Be arranged in 20 bottom of vibrating diaphragm lead wire circuit plate 2012 connect, by lead wire circuit plate 2012 can make between multiple voice coils 1 with
A variety of circuit connection modes (series, parallel, series-parallel comprehensive mode) are connected with each other, and are effectively matched different resistance REAnd inductance
LVC.Lead 13 generally using the metallic conductor of flexible circuit board identical with voice coil ontology or single-sided insulation, and lead 13 with
Voice coil 1 can be an integral structure.
Lead 13 extends from the inner and outer wall that speech coil framework 2 is close in the endface of one end of voice coil 1 respectively, in groove
It merges and draws at 221, and by 13 clamping fixed of lead in the junction of groove 221 and vibrating diaphragm chassis 201, it is possible to reduce voice coil 1
Vibration when generate loose wire, broken string phenomenon, improve lead 13 service life, guarantee voice coil quality.
To realize rapid cooling, multiple through-holes 24 are equipped on the voice coil mounting portion 21 of speech coil framework 2, through-hole 24 is heat dissipation
Hole, multiple through-holes 24 are equably arranged on the annular sidewall of voice coil mounting portion 21, can quickly dissipate the heat that voice coil 1 generates
Out and reduce the weight of speech coil framework 2.The shape of through-hole 24 can be rectangular, rectangle, circle and ellipse etc., this is practical new
Type does not limit specifically.
The vibrating diaphragm interconnecting piece 22 of speech coil framework 2 is equipped with the groove 221 being connected with the bottom of vibrating diaphragm 20, passes through groove 221
Voice coil 1 and speech coil framework 2 can quickly and accurately be assembled on vibrating diaphragm 20, reduce rigging error, and the freedom of lead 13
End is drawn by groove 221, and lead 13 is connected firmly, is not easy to break, improves the service life of lead 13.Vibrating diaphragm interconnecting piece 22 increases
The big bonded area with vibrating diaphragm 20, improves the adhesive strength of speech coil framework 2 Yu vibrating diaphragm 20, effectively improves vibrational system
Stability improves the acoustical behavior of loudspeaker.
Four sides of the rectangular cylindrical structure of speech coil framework 2 are curve, quadrangle is fillet, and four facades 25 are to protrude outward
Micro- curved surface of (be in parabolical) and with four tangent transition of fillet surface 26.Facade 25 is using micro- curved surface and passes through 26 transition of curved surface
Can be improved the compactness of the outer peripheral surface of voice coil 1 and speech coil framework 2, at the same can also be provided for voice coil 1 arc-shaped and with four
The tangent corner of a fillet；Rounded structure is set by the corner of speech coil framework 2, voice coil collision magnetic circuit is can be avoided, improves sound
Enclose quality.Since speech coil framework 2 is rectangular cylindrical structure, rectangular ring structure, rectangular ring knot are formed after 1 coiling and molding of voice coil
Structure includes rectangle structure or square structure, and the quadrangle of rectangular ring structure is also fillet.In other embodiments,
Four facades 25 or plane.
Speech coil framework 2 is using heat-resisting material and is integrally machined molding, such as high temperature resistant injected plastics material or nitridation can be used
Silicon (Si3N4), the light ceramic materials such as silicon carbide (SiC), the light rigidity of these above-mentioned quality of materials is good, thermal coefficient is high, heat dissipation effect
Fruit is good, and after long-term work, speech coil framework 2 is unlikely to deform, and can promote the performance of loudspeaker engine.
In specific implementation, since vibrating diaphragm 20 is relatively thin, to prevent vibrating diaphragm 20 from deforming, it can be equipped with and its shape in the bottom of vibrating diaphragm 20
The vibrating diaphragm chassis 201 that shape matches, vibrating diaphragm chassis 201 are pasted onto the bottom of vibrating diaphragm 20, and vibrating diaphragm chassis 201 is equipped with and voice coil bone
The abutting joint mouth 2011 that frame 2 is connected is equipped with the lead wire circuit being connected with voice coil leads 13 at the center on vibrating diaphragm chassis 201
Plate 2012.Careful design is carried out to vibrating diaphragm chassis 201, is provided with abutting joint mouth corresponding with voice coil 1 and speech coil framework 2
2011, positioning that can be more accurate reduces rigging error, and assembles efficient and convenient.The accurate positioning of voice coil 1 can be reduced
The nonlinear motion for being unevenly distributed, reducing because of the damage of voice coil 1 caused by colliding magnetic circuit and reduce voice coil 1 of magnetic force, is reduced humorous
Wave distortion, intermodulation distortion.In addition, with increasing for 1 quantity of voice coil, what is be accurately positioned wants in the loudspeaker of multitone coil assembly
Ask also more complicated, required precision is also stringenter.The arrangement mode and position cloth of bottom of multiple voice coils 1 in vibrating diaphragm 20 has been determined
Office, has determined that engine module in mapping (projection) position of frame bottom, realizes the accurate assembly of loudspeaker.
Using the speech coil framework 2 of rectangular drum like, area occupied is small, can reduce the weight of speech coil framework 2.In vibrating diaphragm 20
Bottom is provided with the lesser speech coil framework 2 of multiple sizes and cooperatively forms multitone coil assembly with voice coil 1, by 10 groups of multiple Voice coil assemblies
Connection is closed, can be improved the degree of controllability of voice coil 1.By increase and decrease Voice coil assemblies 10 quantity or by multiple 1 series and parallels of voice coil come
Change the D.C. resistance R of voice coil 1EWith inductance LVCAnd then reasonably control QES、QTS, can not only increase loudspeaker enclosure η0May be used also
To reduce resonance frequency fs, improve the acoustical behavior of loudspeaker.
The utility model additionally provides a kind of loudspeaker including at least one above-mentioned Voice coil assemblies.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with
Subject to the scope of protection of the claims.
Claims (10)
1. a kind of Voice coil assemblies, which is characterized in that the voice coil including speech coil framework and on the speech coil framework, the sound
Circle is connected by the speech coil framework with the bottom of vibrating diaphragm, and the main body of the speech coil framework is hollow rectangular cylindrical structure,
The voice coil is formed by monolithic body band coiling, monolithic body band Formation cross-section on the periphery of the speech coil framework
For the voice coil of rectangular ring, one end of the speech coil framework is equipped with the voice coil mounting portion for winding the voice coil, described
The other end of speech coil framework is equipped with the vibrating diaphragm interconnecting piece being connected with the bottom of the vibrating diaphragm, and the both ends of the voice coil mounting portion are equal
Equipped with limiting section.
2. Voice coil assemblies according to claim 1, which is characterized in that four sides of the rectangular cylindrical structure are curve, institute
The quadrangle for stating rectangular cylindrical structure is fillet, and four facades of the side wall of the speech coil framework are outwardly projecting micro- curved surface, phase
By round and smooth surface blending between the adjacent facade, the quadrangle of the rectangular section of the voice coil is fillet.
3. Voice coil assemblies according to claim 2, which is characterized in that the voice coil mounting portion is equipped with multiple through-holes, more
A through-hole is equably arranged on the annular sidewall of the voice coil mounting portion.
4. Voice coil assemblies according to claim 1, which is characterized in that the monolithic body band is the flexible circuit board of printing
Or the metallic foil of single-sided insulation.
5. Voice coil assemblies according to claim 4, which is characterized in that the flexible circuit board includes being fitted in the voice coil
Insulator on skeleton and the metallic conductor being attached on the insulator.
6. Voice coil assemblies according to claim 5, which is characterized in that be provided with multiple metallic conductors, and multiple
Axial direction longitudinal direction close-packed arrays of the metallic conductor along the speech coil framework.
7. Voice coil assemblies according to claim 1, which is characterized in that one end of the voice coil is equipped with lead, the lead
One end be fixedly connected with the voice coil, the other end of the lead is free end, the free end and is arranged in the vibrating diaphragm
Bottom lead wire circuit plate connection.
8. Voice coil assemblies according to claim 7, which is characterized in that the vibrating diaphragm further includes the bottom with the vibrating diaphragm
The vibrating diaphragm chassis that the shape in portion matches, the vibrating diaphragm chassis are pasted onto the bottom of the vibrating diaphragm, on the vibrating diaphragm chassis
The lead wire circuit plate being connected equipped with the abutting joint mouth being connected with the speech coil framework and with the lead.
9. Voice coil assemblies according to claim 1, which is characterized in that the speech coil framework is using heat-resisting material and passes through
It is integrally machined molding, the heat-resisting material includes high temperature resistant injected plastics material or light ceramic material.
10. a kind of loudspeaker, which is characterized in that the loudspeaker includes at least one any one of -9 institute according to claim 1
The Voice coil assemblies stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821269866.2U CN208489984U (en) | 2018-08-07 | 2018-08-07 | Voice coil assemblies and loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821269866.2U CN208489984U (en) | 2018-08-07 | 2018-08-07 | Voice coil assemblies and loudspeaker |
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| Publication Number | Publication Date |
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| CN208489984U true CN208489984U (en) | 2019-02-12 |
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ID=65248081
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821269866.2U Active CN208489984U (en) | 2018-08-07 | 2018-08-07 | Voice coil assemblies and loudspeaker |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020029959A1 (en) * | 2018-08-07 | 2020-02-13 | 张永春 | Multi-engine array system and loudspeaker |
| WO2020029960A1 (en) * | 2018-08-07 | 2020-02-13 | 张永春 | Speaker diaphragm and speaker |
| CN111970825A (en) * | 2020-05-27 | 2020-11-20 | 深圳前海振百易科技有限公司 | Integrated novel voice coil and manufacturing method thereof |
| CN114473523A (en) * | 2022-02-21 | 2022-05-13 | 连云港韵至电子有限公司 | Voice coil loudspeaker voice coil skeleton later stage processing equipment |
-
2018
- 2018-08-07 CN CN201821269866.2U patent/CN208489984U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020029959A1 (en) * | 2018-08-07 | 2020-02-13 | 张永春 | Multi-engine array system and loudspeaker |
| WO2020029960A1 (en) * | 2018-08-07 | 2020-02-13 | 张永春 | Speaker diaphragm and speaker |
| US11356779B2 (en) | 2018-08-07 | 2022-06-07 | Shenzhen Xinqi Science And Technology Co., Ltd. | Multi-engine array system and loudspeaker |
| CN111970825A (en) * | 2020-05-27 | 2020-11-20 | 深圳前海振百易科技有限公司 | Integrated novel voice coil and manufacturing method thereof |
| CN114473523A (en) * | 2022-02-21 | 2022-05-13 | 连云港韵至电子有限公司 | Voice coil loudspeaker voice coil skeleton later stage processing equipment |
| CN114473523B (en) * | 2022-02-21 | 2023-01-17 | 连云港韵至电子有限公司 | Voice coil loudspeaker voice coil skeleton later stage processing equipment |
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