Moving-coil structure and preparation method thereof and loud speakerTechnical field
The present invention relates to electroacoustic techniques fields.
Specifically, being to be related to moving-coil structure and preparation method thereof and loud speaker.
Background technology
There are voice coil, voice coil to be in magnetic gap inside traditional Microspeaker, diaphragm, the diaphragm other end are bonded on voice coilIt is bonded in frame, in order to promote acoustical behavior, the rigid big top dome of bonding is needed on diaphragm.Voice coil by certain way realize andExterior power supply plant is connected to, and in the case of energization, magnetic field can apply driving force to voice coil, make it that vibrating diaphragm up-down vibration be drivenCompressed air sounding.
Existing voice coil is usually made of windings such as enameled wires such as enamel-cover oxygen-free copper-wire, copper-clad aluminum conductor, pure aluminum wire, and voice coil is pre-The voice coil line of certain length, voice coil line is stayed to be welded on interiors of products pad, internal pads and external pads conducting come in factNow it is electrically connected.High-power lower voice coil line is it is possible that disconnection problem, seriously limits the promotion of product power.Moreover, soundCircle bonding diaphragm, diaphragm bonding top dome technique is cumbersome, low production efficiency.
Invention content
It is an object of the invention to overcome the shortcoming of above-mentioned traditional technology, a kind of dynamic moving-coil structure and its making are providedMethod and loud speaker, simplify technique, improve the reliability of product.
The purpose of the present invention is what is reached by following technical measures：
Moving-coil structure, including FPC, the FPC include FPC base materials and conductor, and the FPC includes main part and several bending parts,The bending part is bent to main part side, and the conductor is set on bending part, and the conductor on adjacent two bending part mutually interconnectsLogical, the conductor of connection forms coil, and described coil one end is communicated with the second pad, and the coil other end is communicated with the first welderingDisk.
As an improvement：The FPC base materials further include several interconnecting pieces, and second pad is set on interconnecting piece,First plated through-hole and the first pad are set on interconnecting piece.
As an improvement：The interconnecting piece is set between adjacent two bending part.
As an improvement：The interconnecting piece includes breeze way, the cross sectional shape of breeze way be zigzag or waveform orArc.
As an improvement：The shape of the main part is polygon, and side and the bending part of the main part correspondSetting.
As an improvement：The end conductor extends to close to the side of main part, and the conductor is to close to main partThe part that extends of side be used for in adjacent bend portion conductor or the second pad or the first pad be connected to.
As an improvement：The conductor is metal foil.
As an improvement：First pad is communicated with the first plated through-hole, and first plated through-hole is communicated withTwo plated through-holes, the coil other end are connect with the second plated through-hole.
As an improvement：The number of plies of each bending part upper conductor is at least two layers, and FPC base materials are located at adjacent two layersBetween conductor.
Moving-coil structure production method, includes the following steps：
S1, the flexible electrical with main part as described above, bending part, conductor, the first plated through-hole and the second plated through-hole is madeRoad plate；
S2, bending part is bent to main part side.
Loud speaker, including frame and magnetic circuit system, the magnetic circuit system include magnetic gap, further include moving-coil as described aboveStructure, the bending part is in magnetic gap.
By adopting the above-described technical solution, compared with prior art, it is an advantage of the invention that：Using FPC instead of itPreceding voice coil and top dome, makes that technique is more succinct, and production efficiency is high, and it is high-power under be not in that voice coil line is disconnectedLine situation.
Present invention will be further explained below with reference to the attached drawings and specific embodiments.
Description of the drawings
Attached drawing 1 is a kind of structural schematic diagram of moving-coil structure in the embodiment of the present invention 1.
Attached drawing 2 is the structural schematic diagram of the middle sections Fig. 1 A-A.
Attached drawing 3 is a kind of structural schematic diagram of interconnecting piece in moving-coil structure in the embodiment of the present invention 1.
Attached drawing 4 is the structural schematic diagram after a kind of expansion of moving-coil structure in the embodiment of the present invention 1.
Attached drawing 5 is a kind of structural schematic diagram of moving-coil structure in the embodiment of the present invention 2.
Attached drawing 6 is the structural schematic diagram of the middle sections Fig. 5 B-B.
Attached drawing 7 is a kind of structural schematic diagram of interconnecting piece in moving-coil structure in the embodiment of the present invention 2.
Attached drawing 8 is a kind of structural schematic diagram of moving-coil structure in the embodiment of the present invention 3.
Attached drawing 9 is the structural schematic diagram of the middle sections Fig. 8 C-C.
Attached drawing 10 is a kind of structural schematic diagram of interconnecting piece in moving-coil structure in the embodiment of the present invention 3.
Attached drawing 11 is a kind of structural schematic diagram of loud speaker of the present invention.
Attached drawing 12 is the structural schematic diagram of moving-coil and frame in a kind of loud speaker of the present invention.
Attached drawing 13 is a kind of structural schematic diagram of loud speaker in background technology.
In figure：1- main parts；2- interconnecting pieces；3- bending parts；The first pads of 4-；The first plated through-holes of 5-；The second pads of 6-；The second plated through-holes of 7-；8- conductors；9- FPC substrate layers；10- breeze ways；11- frame；12- diaphragms；13- magnetic gap；14- ballsTop；15- voice coils.
Specific implementation mode
A kind of loud speaker in background technology, as shown in Fig. 13, including frame 11 and magnetic circuit system, the magnetic circuit systemIncluding magnetic gap 13, it is equipped with voice coil 15 in the magnetic gap 13, is bonded with diaphragm 12 on voice coil 15,12 other end of diaphragm is bonded inIn frame 11, rigid top dome 14 is also bonded on voice coil 15.
Embodiment 1：As shown in attached drawing 1,2, moving-coil structure, including FPC, the FPC include three layers of FPC base materials 9 and two layersConductor 8, the FPC base materials 9 are made of polyimides or polyester film.
The FPC includes 1, four bending part 3 of main part and four interconnecting pieces 2,
Specifically, 1 shape of main part is rectangle, the main part 1 is equipped with the second plated through-hole 7.Bending part 3 is arrangedIn 1 edge of main part, the shape of the bending part 3 is rectangle, and the four edges one-to-one correspondence of four bending parts 3 and main part 1 is setIt sets.The bending part 3 is bent to 1 side of main part, and the bending part 3 is vertically arranged with main part 1.
As shown in Fig. 3, the shape of the interconnecting piece 2 is strip, and the interconnecting piece 2 is set to adjacent two bending part 3Between.Interconnecting piece 2 is arranged alternately with bending part 3.The interconnecting piece 2 includes breeze way 10, and the cross sectional shape of breeze way 10 is sawDentation.
Wherein 2 end of interconnecting piece is equipped with the second pad 6, and another 2 end of interconnecting piece is equipped with the first pad 4, and firstPad 4 is equipped with the first plated through-hole 5, and first plated through-hole 5 is connected to the second plated through-hole 7.
As shown in Fig. 4, the conductor 8 is set on bending part 3, and the conductor 8 and the sides aligned parallel of main part 1 are setIt sets, the conductor 8 is copper foil, and the conductor 8 is between adjacent two pieces FPC base materials 9.8 phase of conductor on adjacent two bending part 3Intercommunicated, the conductor 8 of connection forms coil.
Specifically, 8 end of the conductor extends to close to the side of main part 1.
Constitute the conductor 8 in coil stage casing to the part extended close to the side of main part 1 be used for in adjacent bend portion 3Conductor 8 is connected to；The conductor 8 for constituting coil one end is connected to the second pad 6；Constitute the conductor 8 and the second metal of the coil other endChange hole 7 to be connected to.
Embodiment 2：As shown in attached drawing 5,6, moving-coil structure, including FPC, the FPC include one layer of FPC base material 9 and two layersConductor 8, the FPC base materials 9 are made of polyimides or polyester film.
The FPC base materials 9 include 1, three bending part 3 of main part and three interconnecting pieces 2.
Specifically, 1 shape of main part is triangle, the main part 1 is equipped with the second plated through-hole 7.BendingPortion 3 is set to 1 edge of main part, and the shape of the bending part 3 is rectangle, and three sides of three bending parts 3 and main part 1 are one by oneIt is correspondingly arranged.The bending part 3 is bent to 1 side of main part, and the bending part 3 is vertically arranged with main part 1.
As shown in Fig. 7, the shape of the interconnecting piece 2 is strip, and the interconnecting piece 2 is set to adjacent two bending part 3Between.Interconnecting piece 2 is arranged alternately with bending part 3.The interconnecting piece 2 includes breeze way 10, and the cross sectional shape of breeze way 10 is waveShape wave.
Wherein 2 end of interconnecting piece is equipped with the second pad 6, and another 2 end of interconnecting piece is equipped with the first pad 4, and firstPad 4 is equipped with the first plated through-hole 5, and first plated through-hole 5 is connected to the second plated through-hole 7.
The conductor 8 is set on bending part 3, and the conductor 8 and the sides aligned parallel of main part 1 are arranged, and the conductor 8 isCopper foil.One layer of conductor 8 is located at 9 inside of FPC base materials, and another layer of conductor 8 is located at 9 outside of FPC base materials.Adjacent two bending part 3On conductor 8 be interconnected, the conductor 8 of connection forms coil.Coil one end is connected to the second pad 6；The coil other end andTwo plated through-holes 7 are connected to.
Remaining feature of the present embodiment is same as Example 1.
Embodiment 3：As shown in Figures 8 and 9, moving-coil structure, including FPC, the FPC include four layers of FPC base materials 9 and three layersConductor 8, the FPC base materials 9 are made of polyimides or polyester film.
The FPC base materials 9 include 1, five bending part 3 of main part and five interconnecting pieces 2,
Specifically, 1 shape of main part is pentagon, the main part 1 is equipped with the second plated through-hole 7.Bending part 3 is setIt is placed in 1 edge of main part, the shape of the bending part 3 is rectangle, and five sides of five bending parts 3 and main part 1 correspondSetting.The bending part 3 is bent to 1 side of main part, and the bending part 3 is vertically arranged with main part 1.
As shown in Fig. 10, the shape of the interconnecting piece 2 is strip, and the interconnecting piece 2 is set to adjacent two bending part 3Between.Interconnecting piece 2 is arranged alternately with bending part 3.The interconnecting piece 2 includes breeze way 10, and the cross sectional shape of breeze way 10 is arcShape.
Wherein 2 end of interconnecting piece is equipped with the second pad 6, and another 2 end of interconnecting piece is equipped with the first pad 4, and firstPad 4 is equipped with the first plated through-hole 5, and first plated through-hole 5 is connected to the second plated through-hole 7.
The conductor 8 is set on bending part 3, and the conductor 8 and the sides aligned parallel of main part 1 are arranged, and the conductor 8 isCopper foil.The conductor 8 is between adjacent two pieces FPC base materials 9.Conductor 8 on adjacent two bending part 3 is interconnected, connectionConductor 8 forms coil.Coil one end is connected to the second pad 6；The coil other end is connected to the second plated through-hole 7.
Remaining feature of the present embodiment is same as Example 1.
Embodiment 4：Loud speaker, includes the moving-coil structure as described in one of embodiment 1 to 3, this is sentenced including implementingIllustrate for moving-coil structure described in example 1.
Further include frame 11 and magnetic circuit system, the shape of the frame 11 is rectangle, the magnetic as shown in attached drawing 11,12Road system includes magnetic gap 13, and the bending part 3 is located in magnetic gap 13, and four interconnecting pieces 2 are Nian Jie with frame 11 respectively.FirstPad 4 and the second pad 6 are connect with speaker control circuitry.Diaphragm 12 is bonded on main part 1,12 other end of diaphragm is bonded inIn frame 11.
Four interconnecting pieces 2 are Nian Jie with frame 11, and symmetrical configuration, supportive is strong, and imbalance will not occur again in the vibration of diaphragm 12Vibration Condition increases the Performance And Reliability surplus of product.
Embodiment 5：Moving-coil structure production method illustrates by taking moving-coil structure described in embodiment 1 as an example, including following stepSuddenly：
S1, flexible PCB is made, there is main part 1 as described in Example 1, interconnecting piece 2, bending part on the flexible PCB3, the flexible PCB of conductor 8, the first plated through-hole 5 and the second plated through-hole 7, when making flexible PCB, 4 He of the first padSecond pad 6 makes together；
S2, bending part 3 is bent to 1 side of main part, makes bending part 3 perpendicular to main part 1；
S3, bending interconnecting piece 2, produce the breeze way 10 being serrated on interconnecting piece 2.
It should be noted that the conductor 8 can also use other materials, such as silver, gold.1 shape of main partMay be hexagon or other polygons.The conductor 8 may be three layers, four layers, increase the number of conductor 8 in bending part 3Amount.
Several embodiments of the present invention are described in detail above, but the content is only the preferable implementation of the present inventionExample should not be construed as limiting the practical range of the present invention.It is all according to all the changes and improvements made by the present patent application rangeDeng should all fall within the scope of the patent of the present invention.