CN205265903U - Micro loudspeaker - Google Patents
Micro loudspeaker Download PDFInfo
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- CN205265903U CN205265903U CN201521003603.3U CN201521003603U CN205265903U CN 205265903 U CN205265903 U CN 205265903U CN 201521003603 U CN201521003603 U CN 201521003603U CN 205265903 U CN205265903 U CN 205265903U
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- metal shell
- voice coil
- basin frame
- shell
- pcb board
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Abstract
The utility model discloses a micro loudspeaker, including shell and magnetic circuit, magnetic circuit includes and is connected fixed basin frame with the shell, and the shell be metal casing, and metal casing is equipped with the fretwork of acceping basin frame for split type structure, metal casing through punching press or powder metallurgy integrated into one piece, metal casing's bottom with the basin frame, the independent shaping of basin frame, and the bonding is fixed in the fretwork department bottom the metal casing. The utility model discloses a micro loudspeaker can realize the unsettled setting of voice coil loudspeaker voice coil lead wire and magnetic circuit assembly's back assembly, and its distortion is low, listening is effectual.
Description
Technical field
The utility model relates to electroacoustic field, is specifically related to a kind of Microspeaker.
Background technology
Current, loudspeaker is lightening, the trend of miniaturization is more obvious, for small-sized loudspeaker,Due to the restriction of its inner space, if adopt the shell of injection mo(u)lding can cause magnetic circuit and voice coil loudspeaker voice coil less than normal, nothingMethod meets the demand of properties of product, in order to address this problem, conventionally can select metal shell. Traditional one-tenthIn type technique, metal shell adopts punch forming mostly, at the shell of this kind of technique compacted under, its bottom andThe material of periphery is all consistent with thickness, and magnetic saturation phenomenon easily occurs. On the other hand, in this series products, byBe often integral type structure in the basin frame of shell and bottom, thereby can only be first by magnet and washer and its bonding, thisJust cause adopting traditional technique voice coil leads that bonds on vibrating diaphragm, then will lead-in wire along to productPortion and outside pcb board weld, and outside lead-in wire needs gluing to be fixed and protects, and product is wholeThe outward appearance of body is poor. Meanwhile, this fair line mode can only adopt the mode of artificial fair line to produce, efficiencyComparatively low, and because weight and the track of sticky lead-in wire glue are all not easy to control, cannot meet product symmetryRequirement, therefore product easily produces polarization in vibration processes, thereby causes that distortion is higher, hearing effect is poor.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of Microspeaker, by changing goldBelong to the molding mode of shell, be convenient to the unsettled setting of voice coil leads, and assemble after can realizing magnetic circuit.
To achieve these goals, the utility model by the following technical solutions: a kind of Microspeaker, bagDraw together shell and magnetic circuit system; Described magnetic circuit system comprises the basin frame being connected and fixed with described shell, wherein, and instituteStating shell is metal shell; Described metal shell and described basin frame are split-type structural; Described metal shell is logicalCross punching press or powder metallurgy is one-body molded; The bottom of described metal shell is provided with the hollow out of accommodating described basin frame,The independent moulding of described basin frame, bonding is fixed on the hollow part of described metal shell bottom.
Improve as one, described basin frame and described metal shell are magnetic conductive material.
Improve as one, described basin frame is identical or different from the thickness of described metal shell.
Improve as one, the thickness of described basin frame is 0.4 ㎜-0.5 ㎜; The thickness of described metal shell is0.3-0.4㎜。
Improve as one, also comprise the pcb board that connects inside and outside circuit; The outer rim of described metal shell is establishedBe equipped with through hole, described pcb board is joined combination in described through hole and described metal shell card.
Improve as one, described metal shell scribbles colloid with the position that described pcb board is connected, forBy described metal shell and described pcb board fixing seal.
Improve as one, the shape and size of described through hole are consistent with the shape and size of described pcb board.
Improve as one, on described pcb board, be provided with pad; Described pad is positioned at described MicrospeakerInner side.
Improve as one, also comprise voice coil loudspeaker voice coil; The lead-in wire of described voice coil loudspeaker voice coil is by fair line frock fair line; Described soundThe unsettled setting of lead-in wire of circle, and be welded and fixed with described pad.
Improve as one, also comprise magnet and washer; Described washer, described magnet and basin frame are bonded as oneBody, fixing with metal shell bonding after described voice coil loudspeaker voice coil completes fair line.
Compared to existing technologies, Microspeaker of the present utility model, metal shell by punching press orThe technological forming of powder metallurgy, and metal shell and basin frame are split-type structural, and the two becomes separately respectivelyType, and fix by being coated with glue bond. This structure is convenient to the lead-in wire of voice coil loudspeaker voice coil by fair line frock fair line, entersThe unsettled setting of row, and can complete welding at interiors of products, product overall appearance is attractive in appearance, technique is simple, easilyIn controlling and being convenient to automated production; Meanwhile, due to the unsettled setting of lead-in wire, make the symmetry of product better,Distortion is lower, hearing effect is better; On the other hand, adopt this structure, can first voice coil loudspeaker voice coil be utilized to fair lineThe suitable inside to metal shell of frock, and then by the magnetic circuit assembly having bondd and metal shell bonding, improveAssemble sequence of the prior art.
Brief description of the drawings
Fig. 1 is the cutaway view of the utility model Microspeaker;
Fig. 2 is the top view of the utility model Microspeaker;
Reference numeral wherein comprises: 1, metal shell, and 2, basin frame, 3, magnet, 4, washer, 5, voice coil loudspeaker voice coil,51, voice coil leads, 6, pcb board, 61, pad, 7, vibrating diaphragm.
Detailed description of the invention
Below in conjunction with accompanying drawing, describe the utility model content in detail:
Embodiment:
Consult Fig. 1 and Fig. 2 common shown in, Microspeaker of the present utility model comprises shell, magnetic circuit systemAnd vibrational system; Wherein, shell is metal shell 1, and magnetic circuit system specifically comprises that basin frame 2, bonding are fixed onMagnet 3 in basin frame 2 and washer 4, vibrational system comprise vibrating diaphragm 7 and with the vibrating diaphragm 7 fixing sound that bondsCircle 5. In general, voice coil leads 51 need to be carried out conducting with outside circuit, the electricity in present embodimentConducting structure is pcb board 6, is specially the pad 61 being arranged on pcb board 6, voice coil leads 51 and welderingDish 61 is electrically connected, pcb board simultaneously carries out conducting with external circuit, can realize like this loudspeaker outsideCurrent signal is to the transmission of voice coil loudspeaker voice coil 5, in the time that voice coil loudspeaker voice coil 5 receives the current signal of external circuit, at electromagnetic fieldEffect under do the motion of cutting magnetic line, drive to be attached thereto the vibrating diaphragm 7 connecing and to vibrate, to extraneous radiated soundRipple, realizes electric energy to sound transformation of energy.
In the technical program, metal shell 1 not only can adopt traditional Sheet Metal Forming Technology one-body molded, simultaneouslyCan also adopt one-body molded, the described herein powder metallurgical technique of powder metallurgical technique, be to produce metal powderEnd or with metal dust (or mixture of metal dust and non-metal powder) as raw material, through shaping and burningTie, produce the industrial technology of metal material, composite and all kinds goods. PM technique toolStandby significantly energy-conservation, economize the series of advantages such as the high and good stability of material, excellent performance, Product Precision, very suitableClose production in enormous quantities. This technique generally includes following step: (1) produces powder. The production of powderJourney comprises the steps such as the mixing of the producing of powder, powder. For mouldability and the plasticity of improving powder add conventionallyEnter the plasticizer such as machine oil, rubber or paraffin. (2) compressing. Powder, under 15-600MPa pressure, is pressedBecome required form. (3) sintering. In the high temperature furnace of protective atmosphere or vacuum drying oven, carry out. Sintering is different from goldBelong to fusing, when sintering, have a kind of element at least still in solid-state. In sintering process, between powder particle, pass through to spread,The a series of physical and chemical processes such as recrystallization, melting welding, chemical combination, dissolving, become and have certain porosityMetallurgic product. (4) post processing. Generally, the product sintering can directly use. But for someDimensional requirement precision is high and have the product of high hardness, wearability also will carry out sintering post processing. Post processingComprise pressure-sizing, roll extrusion, extruding, quenching, surface hardening, immersion oil and infiltration etc. Certainly above-mentioned steps,A kind of reference is only provided, specifically can optimizes accordingly or increase and decrease according to actual conditions, all do not affectThe enforcement of the technical program.
The more important thing is, in the technical program, in above-mentioned moulding process, by metal shell 1 and basin frame 2Be made as split-type structural, i.e. the two respectively independent moulding, the bottom of metal shell 1 is provided with accommodates basin frame 2Hollow out, basin frame 2 bonds and is fixed on the hollow part of metal shell 1 bottom. Compared to available technology adoptingSheet Metal Forming Technology is the mode of metal shell and the moulding of basin frame integrated punching, in this programme, and can be first by soundCircle lead-in wire 51 utilizes fair line frock along the inside to metal shell 1, and then by the magnetic circuit assembly (China having bonddDepartment 3, magnet 2 and basin frame 1) bond with metal shell 1, improve thus assemble sequence of the prior art.
Preferably, basin frame 2 and metal shell 1 are the material of magnetic conduction, and, basin frame 2 and metal shell1 thickness can be the same or different, and this point is different from basin frame and sheathing material and thick in prior artSpend all identical design. One is preferred embodiment that the thickness of basin frame 2 is 0.4 ㎜-0.5 ㎜, and goldenThe thickness that belongs to shell 1 is 0.3-0.4 ㎜. Certainly basin frame 2, described herein and the thickness of metal shell 1 are alsoBe not limited to above-mentioned two intervals, also can change to some extent according to actual needs, not shadow of its concrete number rangeRing protection domain and the enforcement of the technical program.
Except above-mentioned improvement, in present embodiment, changed consolidating of pcb board 6 and metal shell 1 simultaneouslyDetermine mode, be specially in the outer rim of metal shell 1 through hole (fail in figure clear demonstration), pcb board 6 are setJoin combination in through hole and metal shell 1 card. In order to improve the two fixing reliability, metal shell 1 withThe position that pcb board 6 is connected can scribble colloid, by the two further fixing seal. So, PCBPlate 6 has just been combined in the inside of loudspeaker, instead of outside, same, is located at the pad on pcb board 661 are also positioned at the inside of loudspeaker, that is to say, now, can realize voice coil leads 51 and pad 61 existsInner electric connection, and do not need lead-in wire to go between along be coated with again colloid bonding to outside, product can be improvedProduct outward appearance; On the other hand, because pcb board 6 cards are joined in the outer rim that is fixed on metal shell 1, outer rim placePlane higher, now, can voice coil leads 51 be set by fair line frock is unsettled, and not need manually suitableLine, not only can simplify technique, raise the efficiency, be convenient to automated production, can improve the right of product simultaneouslyTitle property, reduces distortion, improves hearing effect.
Certainly,, in this place improves, in order to be convenient to assembling, pcb board 6 be can be good at and goldBelong to shell 1 fixing, the shape and size of through hole should be consistent with the shape and size of pcb board 6.
These are only the utility model case study on implementation, be not limited to the utility model, as long as abilityThe equivalence that territory those of ordinary skill is done according to the utility model institute disclosure is modified or is changed, and all should include inIn the protection domain of recording in claims.
Claims (10)
1. a Microspeaker, comprises shell and magnetic circuit system; Described magnetic circuit system comprises the basin frame being connected and fixed with described shell, it is characterized in that: described shell is metal shell; Described metal shell and described basin frame are split-type structural; Described metal shell is one-body molded by punching press or powder metallurgy; The bottom of described metal shell is provided with the hollow out of accommodating described basin frame, the independent moulding of described basin frame, and bonding is fixed on the hollow part of described metal shell bottom.
2. Microspeaker according to claim 1, is characterized in that: described basin frame and described metal shell are magnetic conductive material.
3. Microspeaker according to claim 2, is characterized in that: described basin frame is identical or different from the thickness of described metal shell.
4. Microspeaker according to claim 3, is characterized in that: the thickness of described basin frame is 0.4 ㎜-0.5 ㎜; The thickness of described metal shell is 0.3-0.4 ㎜.
5. Microspeaker according to claim 1, is characterized in that: also comprise the pcb board that connects inside and outside circuit; The outer rim of described metal shell is provided with through hole, and described pcb board is joined combination in described through hole and described metal shell card.
6. Microspeaker according to claim 5, is characterized in that: described metal shell scribbles colloid with the position that described pcb board is connected, for by described metal shell and described pcb board fixing seal.
7. Microspeaker according to claim 5, is characterized in that: the shape and size of described through hole are consistent with the shape and size of described pcb board.
8. Microspeaker according to claim 5, is characterized in that: on described pcb board, be provided with pad; Described pad is positioned at the inner side of described Microspeaker.
9. Microspeaker according to claim 8, is characterized in that: also comprise voice coil loudspeaker voice coil; The lead-in wire of described voice coil loudspeaker voice coil is by fair line frock fair line; The unsettled setting of lead-in wire of described voice coil loudspeaker voice coil, and be welded and fixed with described pad.
10. Microspeaker according to claim 9, is characterized in that: also comprise magnet and washer; Described washer, described magnet and basin frame are bonded as one, fixing with metal shell bonding after described voice coil loudspeaker voice coil completes fair line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521003603.3U CN205265903U (en) | 2015-12-03 | 2015-12-03 | Micro loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521003603.3U CN205265903U (en) | 2015-12-03 | 2015-12-03 | Micro loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205265903U true CN205265903U (en) | 2016-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521003603.3U Active CN205265903U (en) | 2015-12-03 | 2015-12-03 | Micro loudspeaker |
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| CN (1) | CN205265903U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107454523A (en) * | 2017-08-29 | 2017-12-08 | 瑞声科技(新加坡)有限公司 | Microphone device |
| CN109246556A (en) * | 2018-11-23 | 2019-01-18 | 江门波威音响器材有限公司 | A kind of loudspeaker assemble method |
| CN110267152A (en) * | 2019-05-08 | 2019-09-20 | 歌尔股份有限公司 | A kind of sounding device |
| WO2019191856A1 (en) * | 2018-04-02 | 2019-10-10 | 声电电子科技(惠州)有限公司 | Voice coil wire suspended micro loudspeaker |
| WO2021142695A1 (en) * | 2020-01-15 | 2021-07-22 | 声电电子科技(惠州)有限公司 | Symmetrical suspended miniature speaker having outer magnetic structure voice coil lead wire |
-
2015
- 2015-12-03 CN CN201521003603.3U patent/CN205265903U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107454523A (en) * | 2017-08-29 | 2017-12-08 | 瑞声科技(新加坡)有限公司 | Microphone device |
| WO2019191856A1 (en) * | 2018-04-02 | 2019-10-10 | 声电电子科技(惠州)有限公司 | Voice coil wire suspended micro loudspeaker |
| CN109246556A (en) * | 2018-11-23 | 2019-01-18 | 江门波威音响器材有限公司 | A kind of loudspeaker assemble method |
| CN110267152A (en) * | 2019-05-08 | 2019-09-20 | 歌尔股份有限公司 | A kind of sounding device |
| WO2020224276A1 (en) * | 2019-05-08 | 2020-11-12 | 歌尔股份有限公司 | Sound production device |
| WO2021142695A1 (en) * | 2020-01-15 | 2021-07-22 | 声电电子科技(惠州)有限公司 | Symmetrical suspended miniature speaker having outer magnetic structure voice coil lead wire |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |