CN201234338Y - Micro moving coil type electro-acoustic converter vibration system - Google Patents
Micro moving coil type electro-acoustic converter vibration system Download PDFInfo
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- CN201234338Y CN201234338Y CNU2008200256501U CN200820025650U CN201234338Y CN 201234338 Y CN201234338 Y CN 201234338Y CN U2008200256501 U CNU2008200256501 U CN U2008200256501U CN 200820025650 U CN200820025650 U CN 200820025650U CN 201234338 Y CN201234338 Y CN 201234338Y
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- voice coil
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- hard portion
- strip
- vibrating diaphragm
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Abstract
The utility model discloses a micro moving-coil type vibrating system for an electro-acoustical transducer, which comprises a strip-shaped vibrating diaphragm and a round voice coil that are bonded together and have centers thereof overlapped. The vibrating diaphragm comprises a strip-shaped central hard portion and an edge portion surrounding the central hard portion, the central position of the central hard portion is overlapped with the central position of the voice coil, and the hardness of the central hard portion is greater than that of the edge portion. By bonding the round voice coil and the central hard portion of the strip-shaped vibrating diaphragm, the effect which a strip-shaped voice coil can reach is realized without designing the complex strip-shaped voice coil, so as to effectively improve design convenience and reduce cost.
Description
Technical field
The utility model relates to a kind of miniature electro-acoustic transducer vibrational system, especially relates to a kind of miniature moving-coil type electroacoustic transducer vibrational system.
Background technology
In recent years, develop rapidly along with electronic product markets such as mobile phone, notebook computers, the miniature moving-coil type electroacoustic transducer of cost performance excellence (generally comprising micro-telephone receiver and miniature electro-acoustic transducer) is widely used, as accompanying drawing 5 is a kind of common miniature moving-coil type electroacoustic transducer, its magnetic circuit device is the internal magnetic circuit structure, and voice coil loudspeaker voice coil 11 and vibrating diaphragm 12 are combined the formation vibrational system; Basin frame 14, magnet 15, washer 16 are combined the formation magnetic circuit system; Shell 13 is combined the basic structure that forms moving-coil type electro-acoustic conversing device with vibrational system and magnetic circuit system, and wherein, vibrating diaphragm 12 generally is divided into edge part 121 and central part 122, and voice coil loudspeaker voice coil 11 is bonded in the position, junction of edge part 121 and central part 122.Along with product for size and performance demands, vibrational system at product has been carried out some improvement, multiple strip vibrating diaphragm design has for example appearred at present, corresponding also voice coil loudspeaker voice coil and magnetic circuit system are set to strip simultaneously, and for example accompanying drawing 6 has embodied the decomposing schematic representation of the vibrational system of a kind of runway shape voice coil loudspeaker voice coil and vibrating diaphragm composition.Though the product better performances of this strip vibrational system and magnetic circuit system, the strip voice coil loudspeaker voice coil that needs is compared circular voice coil loudspeaker voice coil manufacture difficulty and is strengthened, and corresponding magnetic circuit system design difficulty is also bigger, and production cost increases, production efficiency reduces.So be necessary to design a kind of novel vibrating system, make this vibrational system can reach the effect of strip vibrational system, and do not need to design complicated strip voice coil loudspeaker voice coil and strip magnetic circuit system.
The utility model content
Technical problem to be solved in the utility model provides a kind of miniature electro-acoustic transducer vibrational system, can reach the effect of strip vibrational system, and does not need to design complicated strip voice coil loudspeaker voice coil and strip magnetic circuit system.
For solving the problems of the technologies described above, the technical solution of the utility model is: the miniature moving-coil type electroacoustic transducer vibrational system, comprise and bonding together and strip vibrating diaphragm and circular voice coil loudspeaker voice coil that the center overlaps, described vibrating diaphragm comprises hard of the center of strip and around the edge part of the hard portion in described center, the center of the hard portion in described center and the center of described voice coil loudspeaker voice coil overlap, and the hardness of the hard portion in described center is greater than described edge part.This design that the hard portion of circular voice coil loudspeaker voice coil and strip vibrating diaphragm center is combined, the vibration of voice coil loudspeaker voice coil drives the body vibration of the hard portion in strip vibrating diaphragm center, be similar to the vibration of strip voice coil loudspeaker voice coil, can reach the product effect that the strip voice coil loudspeaker voice coil can reach, and not need to design complicated strip voice coil loudspeaker voice coil.
The improvement of the technical program is: the peripheral shape of the hard portion in described center and the peripheral shape of described edge part are consistent.The general design of strip has shapes such as ellipse, rectangle, runway shape, and the peripheral shape of the hard portion in center was enhanced product performance with consistent helping of the peripheral shape of edge part, simplicity of design.
A kind of further improvement of the technical program is: the minor axis radius of the hard portion in described center is more than or equal to described voice coil loudspeaker voice coil radius, and described voice coil loudspeaker voice coil is bonded in hard position, described center.This design is suitable for less voice coil loudspeaker voice coil of diameter and magnetic circuit system.
Another kind of further improvement of the technical program is: the minor axis radius of the hard portion in described center is less than described voice coil loudspeaker voice coil radius, major axis radius is greater than described voice coil loudspeaker voice coil radius, the position of hard correspondence of described voice coil loudspeaker voice coil and described center bonds mutually, and the position of described edge part correspondence is unsettled.This design can be adopted diameter bigger circular voice coil loudspeaker voice coil and magnetic circuit system.
A kind of improvement of technique scheme is: the hard portion in described vibrating diaphragm center comprises at least one metal level.This metal level hardness is bigger, and can change the weight of vibrating diaphragm, can change sensitivity and lowest resonant frequency (fo), generally adopt aluminum, one deck or multilayer can be set, can be arranged on a side or the both sides or the direct hollow out vibrating diaphragm matrix of vibrating diaphragm matrix.
The another kind of technique scheme improves and is: the thickness of the hard portion in described vibrating diaphragm center is greater than edge part.Increase by thickness, also can reach and add the approximate effect of metal level the hard portion in vibrating diaphragm center.
Another improvement of technique scheme is: hard of described vibrating diaphragm center is flat shape.This design difficulty is less, and the design of the hard portion in center is comparatively simple.
Owing to adopted technique scheme, the miniature moving-coil type electroacoustic transducer vibrational system, comprise and bonding together and strip vibrating diaphragm and circular voice coil loudspeaker voice coil that the center overlaps, described vibrating diaphragm comprises hard of the center of strip and around the edge part of the hard portion in described center, the center of the hard portion in described center and the center of described voice coil loudspeaker voice coil overlap, and the hardness of the hard portion in described center is greater than described edge part; This technology that the hard portion of circular voice coil loudspeaker voice coil and strip vibrating diaphragm center is combined does not need to design complicated strip voice coil loudspeaker voice coil, but can reach the product effect that the strip voice coil loudspeaker voice coil can reach, and effectively raises the design convenience, reduces cost.
Description of drawings
Fig. 1 is the structural representation of the utility model case study on implementation one;
Fig. 2 is the decomposing schematic representation of the utility model case study on implementation one;
Fig. 3 is the structural representation of the utility model case study on implementation two;
Fig. 4 is the structural representation of the utility model case study on implementation three;
Fig. 5 is the miniature moving-coil type electroacoustic transducer structural representation of prior art;
Fig. 6 is a kind of miniature moving-coil type electroacoustic transducer vibrational system decomposing schematic representation of prior art.
Embodiment
Embodiment one
As depicted in figs. 1 and 2, the implementation case has been described a kind of miniature moving-coil type electroacoustic transducer vibrational system, comprises the vibrating diaphragm 2 of a cylindrical shape voice coil loudspeaker voice coil 1 and a strip, and voice coil loudspeaker voice coil 1 is bonded in a side of vibrating diaphragm 2.Vibrating diaphragm 2 basic flat shapes are strip, base material is selected plastic material, comprises edge part 2a and central part 2b, and wherein central part 2b's is shaped as strip, be pasted with the approximate aluminium flake 2c of a geomery on central part 2b, voice coil loudspeaker voice coil 1 is bonded in the position at central part 2b place.
This miniature moving-coil type electroacoustic transducer vibrational system design, voice coil loudspeaker voice coil 1 is bonded in the position at central part 2b place, thus voice coil loudspeaker voice coil 1 forms an integral body with relative hard aluminium flake 2c.In the work of electroacoustic transducer, the vibration of voice coil loudspeaker voice coil 1 drives the vibration of the pairing rectangle central part of whole aluminium flake 2c 2b, its effect is similar to a rectangular voice coil loudspeaker voice coil and drives a rectangular vibrating diaphragm vibration, yet this design does not need rectangular voice coil loudspeaker voice coil and corresponding rectangle magnetic circuit system, effectively reduced product manufacturing cost, improved production efficient; And this mode can change the counterweight (weight of vibrational system) of vibrating diaphragm, thereby can adjust the sensitivity and the lowest resonant frequency (fo) of product, than the general strip voice coil loudspeaker voice coil and the product better effects if of magnetic Circuit Design.
Embodiment two
As shown in Figure 3, the main distinction of the implementation case and case study on implementation 1 is the design of central part 2b, the strip central part 2b material of the implementation case is consistent with edge part 2a, but thickness is greater than edge part 2a, thereby its weight and hardness can suitably be adjusted, and can reach the effect in the case study on implementation one.
Embodiment three
As shown in Figure 4, the main distinction of the implementation case and case study on implementation 1 is that the design of the hard portion in center is different, hard aluminium flake 2c exterior contour in the implementation case is a strip, the position of wherein corresponding voice coil loudspeaker voice coil 1 inside is the hollow out of a circle, the bonding position outside of corresponding voice coil loudspeaker voice coil 1 forms the strip profile that hardness is relatively large, can reach the propinquity effect of case study on implementation one.
Claims (7)
1. miniature moving-coil type electroacoustic transducer vibrational system, comprise and bonding together and strip vibrating diaphragm and circular voice coil loudspeaker voice coil that the center overlaps, it is characterized in that: described vibrating diaphragm comprises hard of the center of strip and around the edge part of the hard portion in described center, the center of the hard portion in described center and the center of described voice coil loudspeaker voice coil overlap, and the hardness of the hard portion in described center is greater than described edge part.
2. little shape moving-coil type electro-acoustic conversing device vibrational system as claimed in claim 1 is characterized in that: the peripheral shape of the hard portion in described center and the peripheral shape of described edge part are consistent, and described peripheral shape is oval or rectangle or runway shape.
3. little shape moving-coil type electro-acoustic conversing device vibrational system as claimed in claim 2 is characterized in that: the minor axis radius of the hard portion in described center is more than or equal to described voice coil loudspeaker voice coil radius, and described voice coil loudspeaker voice coil is bonded in hard position, described center.
4. little shape moving-coil type electro-acoustic conversing device vibrational system as claimed in claim 2, it is characterized in that: the minor axis radius of the hard portion in described center is less than described voice coil loudspeaker voice coil radius, major axis radius is greater than described voice coil loudspeaker voice coil radius, and the position of hard correspondence of described voice coil loudspeaker voice coil and described center bonds mutually.
5. as claim 1,2,3 or 4 described little shape moving-coil type electro-acoustic conversing device vibrational systems, it is characterized in that: the hard portion in described vibrating diaphragm center comprises at least one metal level.
6. as claim 1,2,3 or 4 described little shape moving-coil type electro-acoustic conversing device vibrational systems, it is characterized in that: the thickness of the hard portion in described vibrating diaphragm center is greater than edge part.
7. as claim 1,2,3 or 4 described little shape moving-coil type electro-acoustic conversing device vibrational systems, it is characterized in that: hard of described vibrating diaphragm center is flat shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200256501U CN201234338Y (en) | 2008-07-12 | 2008-07-12 | Micro moving coil type electro-acoustic converter vibration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200256501U CN201234338Y (en) | 2008-07-12 | 2008-07-12 | Micro moving coil type electro-acoustic converter vibration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201234338Y true CN201234338Y (en) | 2009-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200256501U Expired - Fee Related CN201234338Y (en) | 2008-07-12 | 2008-07-12 | Micro moving coil type electro-acoustic converter vibration system |
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| Country | Link |
|---|---|
| CN (1) | CN201234338Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103209376A (en) * | 2013-03-19 | 2013-07-17 | 歌尔声学股份有限公司 | Mini-type loudspeaker |
-
2008
- 2008-07-12 CN CNU2008200256501U patent/CN201234338Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103209376A (en) * | 2013-03-19 | 2013-07-17 | 歌尔声学股份有限公司 | Mini-type loudspeaker |
| CN103209376B (en) * | 2013-03-19 | 2015-11-11 | 歌尔声学股份有限公司 | Microspeaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090506 Termination date: 20160712 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |