CN201623845U - Mini-type movable coil electroacoustic converting device - Google Patents
Mini-type movable coil electroacoustic converting device Download PDFInfo
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- CN201623845U CN201623845U CN2009202917683U CN200920291768U CN201623845U CN 201623845 U CN201623845 U CN 201623845U CN 2009202917683 U CN2009202917683 U CN 2009202917683U CN 200920291768 U CN200920291768 U CN 200920291768U CN 201623845 U CN201623845 U CN 201623845U
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- electroacoustic transducer
- vibrating diaphragm
- coil
- conductive coating
- coil electroacoustic
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Abstract
The utility model provides a mini-type movable coil electroacoustic converting device which includes an auxiliary system, a vibrating system and a magnetic circuit system; the vibrating system includes a diaphragm and a voice coil; the diaphragm includes a spherical top part and a corrugated part supporting the diaphragm; the voice coil is also provided with a lead; moreover, the surface of the diaphragm is provided with a conductive coating conducting at least two circuits; the central area of the diaphragm is provided with a flexible circuit board; and the lead is electronically connected with the conductive coating by being electrically connected with the flexible circuit board. The design improves the acoustic performances and the electric connecting performances of the mini-type movable coil electroacoustic converting device simultaneously when reducing the distortion of the mini-type movable coil electroacoustic converting device, can also simplify the production and assembling processes of the mini-type movable coil electroacoustic converting device, realizes automatic production of products, reduces the production cost and improves the production efficiency.
Description
Technical field
The utility model is specifically related to a kind of minitype moving-coil electroacoustic transducer.
Background technology
Along with the development in portable consumer electronic product market, a large amount of miniature electro-acoustic device particularly minitype moving-coil electroacoustic transducer has obtained using widely.The operation principle of minitype moving-coil electroacoustic transducer is: thus the ac signal of variation makes the voice coil loudspeaker voice coil up-down vibration that is positioned at magnetic gap drive the vibrational system vibration sounding, as Figure 14, Figure 15 and shown in Figure 16, the minitype moving-coil electroacoustic transducer of known two magnetic route structure, its vibrational system comprises vibrating diaphragm 21 and voice coil loudspeaker voice coil 22, vibrating diaphragm 21 comprises ring portion 211, edge part 213, ball top 214 and the binding part 215 that combines with voice coil loudspeaker voice coil 22, on voice coil loudspeaker voice coil 22, also be provided with lead-in wire 23, the minitype moving-coil electroacoustic transducer distortion of this traditional structure is bigger, is unfavorable for the raising of product acoustical behavior; And when minitype moving-coil electroacoustic transducer long period work or vibrational system amplitude were excessive, broken string caused and is electrically connected drawbacks such as bad easily; The production technology of the minitype moving-coil electroacoustic transducer vibrational system of this traditional structure is comparatively complicated simultaneously, is unfavorable for the reduction of production cost and the raising of production efficiency.
In the minitype moving-coil electroacoustic transducer to above-mentioned traditional structure improves, the Chinese patent CN1010617 that open day is on October 24th, 2007 discloses a kind of design: diaphragm (being vibrating diaphragm) is provided with the conduction region that groove separates with at least two, voice coil loudspeaker voice coil is installed in the groove of diaphragm, will go between simultaneously is electrically connected with conduction region again.This design, though solved to a certain extent minitype moving-coil electroacoustic transducer lead-in wire useful life of above-mentioned traditional structure long, be easy to generate the drawback that noise causes distortion etc., but the voice coil loudspeaker voice coil of this structural design and the packaging technology of vibrating diaphragm are comparatively complicated, vibrating diaphragm and voice coil loudspeaker voice coil are electrically connected operation and are difficult to operation, be difficult to realize automated production, be unfavorable for the raising of production efficiency and the reduction of production cost.
So, be necessary the minitype moving-coil electroacoustic transducer vibrational system of above-mentioned traditional structure is further improved, to avoid above-mentioned defective.
The utility model content
Technical problem to be solved in the utility model provides a kind of minitype moving-coil electroacoustic transducer, when reducing the minitype moving-coil electroacoustic transducer distortion, improve acoustical behavior, improve the minitype moving-coil electroacoustic transducer electrical connection properties, can also simplify the production and the assembling process of minitype moving-coil electroacoustic transducer, realize the automated production of product, reduced production cost, enhanced productivity.
For solving the problems of the technologies described above, the technical scheme that the utility model proposed is: minitype moving-coil electroacoustic transducer comprises auxiliary system, vibrational system and magnetic circuit system; Described auxiliary system comprises shell; Described vibrational system comprises vibrating diaphragm and voice coil loudspeaker voice coil, and described vibrating diaphragm comprises the ball top and supports the ring portion of described vibrating diaphragm, also is provided with lead-in wire on the described voice coil loudspeaker voice coil, and: described vibrating diaphragm surface is provided with and forms the conductive coating of connecting at least two circuit; The central area of described vibrating diaphragm is provided with flexible circuit board, and described lead-in wire is electrically connected with described conductive coating by being electrically connected described flexible circuit board.This design, when reducing the minitype moving-coil electroacoustic transducer distortion, improve acoustical behavior, improve the minitype moving-coil electroacoustic transducer electrical connection properties, can also simplify the production and the assembling process of minitype moving-coil electroacoustic transducer, realize the automated production of product, reduced production cost, enhanced productivity.
As a kind of improvement, described vibrating diaphragm is provided with hollow structure, described flexible circuit board be combined on the described central area and described flexible circuitry board size greater than the size of described hollow structure.The design is the preferred scheme of the utility model.
As a kind of improvement, described hollow structure is positioned on the central area at ball top of described vibrating diaphragm.Hollow structure is arranged on the central area on ball top and is the preferred implementation process of the utility model.
As a kind of improvement, described hollow structure is positioned on the ball top of described vibrating diaphragm.Hollow structure is arranged on vibrating diaphragm ball top upward is the preferred implementation process of the utility model.
As a kind of improvement, also be respectively equipped with the extension that is suspended on described minitype moving-coil electroacoustic transducer on described vibrating diaphragm and the shell, the circuit on the described conductive coating is electrically connected on the extension of described shell.Extension is set on vibrating diaphragm, helps simplifying the installation process of minitype moving-coil electroacoustic transducer.
As a kind of improvement, described conductive coating is a nickel metallic conduction coating.The conductive coating of nickel metal material is that the utility model is created embodiment preferred.
As a kind of improvement, described conductive coating is symmetrically distributed on described vibrating diaphragm.Symmetrical distribution can guarantee the balance of vibrational system, for the utility model is created preferred implementation process.
As a kind of improvement, electrode and external electrode in described flexible PCB is provided with, described external electrode is electrically connected with conductive coating in the described ring portion by conducting resinl, and described interior electrode and described lead-in wire combine by welding electricity.This electric connection mode is that the utility model is created embodiment preferred.
As a kind of improvement, described interior electrode and external electrode are symmetrically distributed on described flexible circuit board.Symmetrical distribution can guarantee the balance of vibrational system.
As a kind of improvement, described minitype moving-coil electroacoustic transducer is circular, square or runway shape.Minitype moving-coil electroacoustic transducer circular, square or runway shape is the utility model embodiment preferred.
As a kind of improvement, described minitype moving-coil electroacoustic transducer magnetic circuit system is a two magnetic route structure.
Owing to adopted technique scheme: minitype moving-coil electroacoustic transducer comprises auxiliary system, vibrational system and magnetic circuit system; Described auxiliary system comprises shell; Described vibrational system comprises vibrating diaphragm and voice coil loudspeaker voice coil, and described vibrating diaphragm comprises the ball top and supports the ring portion of described vibrating diaphragm, also is provided with lead-in wire on the described voice coil loudspeaker voice coil, and: described vibrating diaphragm surface is provided with and forms the conductive coating of connecting at least two circuit; The central area of described vibrating diaphragm is provided with flexible circuit board, and described lead-in wire is electrically connected with described conductive coating by being electrically connected described flexible circuit board.When reducing the minitype moving-coil electroacoustic transducer distortion, improve acoustical behavior, improve the minitype moving-coil electroacoustic transducer electrical connection properties, can also simplify the production and the assembling process of minitype moving-coil electroacoustic transducer, realize the automated production of product, reduced production cost, enhanced productivity.
Description of drawings
Fig. 1 is the decomposing schematic representation of the utility model embodiment one;
Fig. 2 is the structural representation at the utility model embodiment one vibrating diaphragm and the flexible circuit board back side;
Fig. 3 is the structural representation in the utility model embodiment one vibrating diaphragm and flexible circuit board front;
Fig. 4 is the vertical view in the utility model embodiment one vibrating diaphragm front;
Fig. 5 is the utility model embodiment one vibrating diaphragm and the schematic diagram that combines of flexible circuit board;
Fig. 6 is the vibrating diaphragm front plan view that the utility model embodiment one saves the conductive coating improvement project;
Fig. 7 is the schematic diagram of the utility model embodiment one;
Fig. 8 is the structural representation in the utility model embodiment two vibrating diaphragms and flexible circuit board front;
Fig. 9 is the structural representation in the utility model embodiment two flexible circuit board fronts;
Figure 10 is the vertical view at the utility model embodiment two vibrating diaphragm back sides;
Figure 11 is the structural representation of the utility model embodiment three vibrating diaphragms and flexible circuit board;
Figure 12 is the structural representation of the utility model embodiment three vibrating diaphragms;
Figure 13 is the structural representation of the utility model embodiment three;
Figure 14 is the vertical view in the utility model embodiment three further improved vibrating diaphragm fronts;
Figure 15 is the cutaway view of the minitype moving-coil electroacoustic transducer vibrational system of known technology;
Figure 16 is the vertical view of the minitype moving-coil electroacoustic transducer vibrational system of known technology.
Embodiment
Embodiment one:
Minitype moving-coil electroacoustic transducer as Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, comprises auxiliary system, vibrational system and magnetic circuit system.Auxiliary system comprises protecgulum 11 and shell 12, and an epitaxial lateral overgrowth of shell 12 is stretched and formed the shell extension 121 that is suspended on minitype moving-coil electroacoustic transducer; Vibrational system comprises vibrating diaphragm 21 and voice coil loudspeaker voice coil 22, also is provided with lead-in wire 23 on the voice coil loudspeaker voice coil 22; Magnetic circuit system is a two magnetic route structure, comprise respectively first washer 311, first magnet 321 and second washer 312, second magnet 322 that assemble with magnetic conductive board 33 from top to bottom, wherein first washer 311 and first magnet 321 are put for the concentric ring winding with second washer 312 and second magnet 322 respectively; In shell extension 121, also be combined with conducting strip 6 by Shooting Technique.
Vibrating diaphragm 21 peripheries are circular, comprise that the center is ball top, the ring portion 211 of hollow structure and the edge part 212 that is used for fixing, the part of edge part 212 stretches out and forms corresponding vibrating diaphragm extension 213 in conjunction with shell extension 121, be symmetrically arranged with conductive coating 5 on the front of vibrating diaphragm ring portion 211, conductive coating 5 is the nickel metal material; Be combined with flexible circuit board 4 on the hollow ball top of vibrating diaphragm 21, the size of flexible circuit board 4 is greater than the hollow structure at described ball top, and the positive electricity of flexible circuit board 4 is in conjunction with vibrating diaphragm 21, and the back side electricity of flexible circuit board 4 is in conjunction with the lead-in wire on the voice coil loudspeaker voice coil 22 23.
The periphery of flexible circuit board 4 is corresponding to vibrating diaphragm 21, and the periphery of flexible circuit board 4 also is a circular configuration.Electrode 41a and external electrode 41b in flexible circuit board 4 front and backs are respectively arranged with, interior electrode 41a and external electrode 41b evenly distribute on flexible circuit board, and conduct by plated-through hole 42, interior electrode 41a and external electrode 41b be conductive coating 5 and electric connecting wire 23 respectively, and conductive coating 5 is by the part electric insulation of uncoated conductive coating on the vibrating diaphragm 21 and form two branch circuits that are electrically connected to vibrating diaphragm extension 213; This implementation process preferably goes between and 23 combines by welding procedure with interior electrode 41a, and conductive coating 5 combines by conducting resinl 7 with external electrode 41b.
Fig. 6 is the further improvement of this implementation process, and conductive coating 5 is arranged on the regional area of ring portion 211, and this design can reduce the coated area of conductive coating 5, reduces production costs.Fig. 7 is the minitype moving-coil electroacoustic transducer structural representation after this implementation process assembling.
The corresponding fixedly vibrating diaphragm extension of extension also can be set on protecgulum in this implementation process.This design of the present embodiment, when reducing the minitype moving-coil electroacoustic transducer distortion and improving acoustical behavior, improve the minitype moving-coil electroacoustic transducer electrical connection properties, can simplify the production and the assembling process of minitype moving-coil electroacoustic transducer, realize the automated production of product, reduced production cost, enhanced productivity.
Embodiment two:
This implementation process is with the main distinction of above-mentioned implementation process, the position difference that conductive coating 5 is provided with, conductive coating in this implementation process is arranged on the back side of vibrating diaphragm 21, as Fig. 8, Fig. 9 and shown in Figure 10, the back side of vibrating diaphragm 21 is provided with conductive coating 5, the external electrode 41b of flexible circuit board 4 be improved to be convenient to vibrating diaphragm 21 on the conductive coating 5 electric loop configuration that combine.
This implementation process also can be by the further improvement to embodiment one simultaneously, reduce cost by the coated area that reduces conductive coating, also can come electrode etc. to further improve according to the different structure of the setting of conductive coating and vibrating diaphragm hollow space to flexible PCB, the neither enforcement that influences this implementation process can realize the technique effect of embodiment one equally.
Embodiment three:
This implementation process is that with the main distinction of embodiment one and embodiment two structure of vibrational system is different, as Figure 11, Figure 12 and shown in Figure 13, vibrational system is square in this implementation process, vibrating diaphragm 21, flexible circuit board 4 are all square structure, interior electrode 41a is set to strip structure, and on the minor axis of vibrating diaphragm 21, also be provided with vibrating diaphragm extension 231, conductive coating 5 is arranged on the positive of vibrating diaphragm 21 and is electrically connected on the vibrating diaphragm extension 213, and this implementation process can realize the technique effect of embodiment one and embodiment two equally.
This implementation process also can be arranged to structure as shown in figure 14, conductive coating 5 is arranged on the part of vibrating diaphragm 21, and vibrating diaphragm 21 also can be other shapes such as ellipse, racetrack, the neither enforcement that influences the invention.
In the enforcement of the invention, flexible circuit board also can adopt other combination such as top of being installed in vibrating diaphragm, hollow structure is set on vibrating diaphragm only is the invention embodiment preferred, the hollow structure at vibrating diaphragm center can be set to different sizes according to actual needs, also can be on the vibrating diaphragm of integrative-structure (the vibrating diaphragm surface is not provided with hollow structure) directly in conjunction with in conjunction with flexible circuit board, conductive coating that also can the vibrating diaphragm surface is set to other circuit structure of at least two circuit, electrode, conductive coating also can be set to other structure, conductive coating also can be other materials, the above-mentioned neither enforcement that influences the invention.
Claims (10)
1. minitype moving-coil electroacoustic transducer comprises auxiliary system, vibrational system and magnetic circuit system; Described auxiliary system comprises shell; Described vibrational system comprises vibrating diaphragm and voice coil loudspeaker voice coil, and described vibrating diaphragm comprises the ball top and support the ring portion of described vibrating diaphragm that also be provided with lead-in wire on the described voice coil loudspeaker voice coil, it is characterized in that: described vibrating diaphragm surface is provided with the conductive coating of at least two circuit of formation; The central area of described vibrating diaphragm is provided with flexible circuit board, and described lead-in wire is electrically connected with described conductive coating by being electrically connected described flexible circuit board.
2. minitype moving-coil electroacoustic transducer as claimed in claim 1, it is characterized in that: described vibrating diaphragm is provided with hollow structure, described flexible circuit board is combined on the described central area, and described flexible circuitry board size is greater than the size of described hollow structure.
3. minitype moving-coil electroacoustic transducer as claimed in claim 2 is characterized in that: described hollow structure is positioned on the central area at ball top of described vibrating diaphragm.
4. minitype moving-coil electroacoustic transducer as claimed in claim 3, it is characterized in that: also be respectively equipped with the extension that is suspended on described minitype moving-coil electroacoustic transducer on described vibrating diaphragm and the shell, the circuit on the described conductive coating is electrically connected on the extension of described shell.
5. minitype moving-coil electroacoustic transducer as claimed in claim 4 is characterized in that: described conductive coating is a nickel metallic conduction coating.
6. minitype moving-coil electroacoustic transducer as claimed in claim 5 is characterized in that: described conductive coating is symmetrically distributed on described vibrating diaphragm.
7. minitype moving-coil electroacoustic transducer as claimed in claim 6, it is characterized in that: electrode and external electrode in described flexible PCB is provided with, described external electrode is electrically connected with conductive coating in the described ring portion by conducting resinl, described in electrode and described lead-in wire combine by welding electricity.
8. minitype moving-coil electroacoustic transducer as claimed in claim 7 is characterized in that: electrode and external electrode are symmetrically distributed on described flexible circuit board in described.
9. as the described minitype moving-coil electroacoustic transducer of the arbitrary claim of claim 1 to 8, it is characterized in that: described minitype moving-coil electroacoustic transducer is circular, square or runway shape.
10. minitype moving-coil electroacoustic transducer as claimed in claim 9 is characterized in that: described minitype moving-coil electroacoustic transducer magnetic circuit system is a two magnetic route structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202917683U CN201623845U (en) | 2009-12-12 | 2009-12-12 | Mini-type movable coil electroacoustic converting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202917683U CN201623845U (en) | 2009-12-12 | 2009-12-12 | Mini-type movable coil electroacoustic converting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201623845U true CN201623845U (en) | 2010-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202917683U Expired - Lifetime CN201623845U (en) | 2009-12-12 | 2009-12-12 | Mini-type movable coil electroacoustic converting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201623845U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101765044A (en) * | 2009-12-12 | 2010-06-30 | 歌尔声学股份有限公司 | Minitype moving-coil electroacoustic transducer |
| CN101984678A (en) * | 2010-11-18 | 2011-03-09 | 瑞声声学科技(深圳)有限公司 | Sound generator |
| CN105050012A (en) * | 2015-08-24 | 2015-11-11 | 张扬 | Loudspeaker and assembling method thereof |
| WO2017059824A1 (en) * | 2015-10-06 | 2017-04-13 | Sound Solutions International Co., Ltd. | Electroacoustic transducer with flexible coilwire connection |
-
2009
- 2009-12-12 CN CN2009202917683U patent/CN201623845U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101765044A (en) * | 2009-12-12 | 2010-06-30 | 歌尔声学股份有限公司 | Minitype moving-coil electroacoustic transducer |
| CN101765044B (en) * | 2009-12-12 | 2012-11-14 | 歌尔声学股份有限公司 | Minitype moving-coil electroacoustic transducer |
| CN101984678A (en) * | 2010-11-18 | 2011-03-09 | 瑞声声学科技(深圳)有限公司 | Sound generator |
| CN101984678B (en) * | 2010-11-18 | 2016-04-06 | 瑞声声学科技(深圳)有限公司 | Acoustical generator |
| CN105050012A (en) * | 2015-08-24 | 2015-11-11 | 张扬 | Loudspeaker and assembling method thereof |
| WO2017059824A1 (en) * | 2015-10-06 | 2017-04-13 | Sound Solutions International Co., Ltd. | Electroacoustic transducer with flexible coilwire connection |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101103 |
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| CX01 | Expiry of patent term |