CN104378722A - Ultra-miniature moving-coil electric-acoustic converter - Google Patents
Ultra-miniature moving-coil electric-acoustic converter Download PDFInfo
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- CN104378722A CN104378722A CN201410675579.1A CN201410675579A CN104378722A CN 104378722 A CN104378722 A CN 104378722A CN 201410675579 A CN201410675579 A CN 201410675579A CN 104378722 A CN104378722 A CN 104378722A
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- voice coil
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Abstract
The invention discloses an ultra-miniature moving-coil electric-acoustic converter. The ultra-miniature moving-coil electric-acoustic converter comprises a magnetic board, an annular magnet, a PCB, a vibrating board and a voice coil. The middle of the magnetic board upwards protrudes to be provided with a magnetic column, the magnet and the magnetic board are vertically laminated and fixedly connected, the top of the magnet is covered with the vibrating board, a cavity is formed by the vibrating board, the magnet and the magnetic board in a defined mode, the magnet surrounds the magnetic column, a gap exists between the magnet and the magnetic column, the upper end of the voice coil is fixedly connected to the vibrating board, the lower end of the voice coil extends into the gap between the magnet and the magnetic column to surround the magnetic column, the PCB is fixedly connected to the bottom of the magnetic board, a through hole for being communicated with the interior and the exterior of the cavity is formed in the magnetic column, and leads of the voice coil penetrate through the through hole to be welded to the PCB. The ultra-miniature moving-coil electric-acoustic converter has the advantages of being small in component part number, simple in structure, easy to assemble, smaller in size and capable of sufficiently meeting the requirements for the high power, the low distortion, the low resonance frequency and the wide working band.
Description
Technical field
The present invention relates to electroacoustic transducer, particularly relate to a kind of superminiature moving-coil type electro-acoustic conversing device.
Background technology
Along with growth in the living standard, consumer is to the requirement of earphone products acoustical quality and more and more higher to the requirement of high-quality, high-fidelity headphone product, the development of intelligent and portable equipment makes product function get more and more, particularly the development of intelligent earphone makes Intellgent Ear confidentially have heart rate detection, telephone receiving simultaneously, dials phone, Voice command, music, ability that stand-by time is long, thus proposes requirements at the higher level to earphone receiver.
Receiver is also known as electroacoustic transducer, existing receiver as shown in Figure 2, support 100 is in peviform, magnet 101 and washer 102 are fixed within support 100, the opening part of support 100 is covered with oscillating plate 103, oscillating plate 103 is fixed with voice coil loudspeaker voice coil 104, voice coil loudspeaker voice coil 104 extends in support 100, and voice coil loudspeaker voice coil 104 is surrounded on magnet 101 and washer 102, the bottom of support 100 is fixed with pcb board 105, the lead-in wire of voice coil loudspeaker voice coil 104 extends to pcb board 105 through the sidewall of support 100, and the wire bonds of voice coil loudspeaker voice coil 104 is in pcb board 105.In above-mentioned receiver, because magnet 101, oscillating plate 103 and pcb board 105 all will be fixed by support 100, thus support 100 becomes requisite parts in receiver, support 100 is also parts maximum, the heaviest in receiver simultaneously, cause existing receiver to be difficult to accomplish less, be difficult to meet the demand of market to micro-telephone receiver.In addition, in existing receiver, the lead-in wire of voice coil loudspeaker voice coil 104 is all the sidewall extending to support 100 along oscillating plate 103, because the extended distance of lead-in wire is longer, needs to play glue on oscillating plate 103 and fix, but for micro-telephone receiver, oscillating plate 103 is membrane structure, to the vibrating effect of oscillating plate 103 be had a strong impact on after glue played by lead-in wire, many harmful effects are caused to the tonequality of receiver, makes receiver be difficult to reach the requirement of high power, low distortion, lower resonant frequency, wide working band.
Summary of the invention
The technical problem to be solved in the present invention is, for the deficiencies in the prior art, there is provided that a kind of building block is few, structure is simple, be easy to assembling, volume is less, and fully can meet the superminiature moving-coil type electro-acoustic conversing device of high power, low distortion, lower resonant frequency, wide working band requirement.
For solving the problems of the technologies described above, the present invention adopts following technical scheme.
A kind of superminiature moving-coil type electro-acoustic conversing device, it includes a magnetic conductive board, the magnet of one ring-type, one pcb board, one oscillating plate and a voice coil loudspeaker voice coil, the pars intermedia of described magnetic conductive board is protruding upward conducting magnetic column, described magnet with magnetic conductive board stacked on top of one another and the two be fixedly connected with, described oscillating plate is covered on the top of magnet, and described oscillating plate, magnet and magnetic conductive board surround and are formed with a cavity, described magnet ring is around in conducting magnetic column and there is space therebetween, the upper end of described voice coil loudspeaker voice coil is fixedly connected on oscillating plate, the lower end of described voice coil loudspeaker voice coil extends and is surrounded on described conducting magnetic column in the space between magnet and conducting magnetic column, described pcb board is fixedly connected on the bottom of magnetic conductive board, described conducting magnetic column offers the through hole will be communicated with inside and outside described cavity, the lead-in wire of described voice coil loudspeaker voice coil is welded in pcb board through described through hole.
Preferably, described through hole is the through hole passing vertically through conducting magnetic column.
Preferably, the inwall of described through hole is stepped, and the inner diameter of this through hole from top to bottom increases successively.
Preferably, the edge of described oscillating plate is fixedly connected with magnet is airtight.
Preferably, the quantity of described lead-in wire is two.
Preferably, described magnetic conductive board and conducting magnetic column integrated punching shaping.
Preferably, described lead-in wire extends along the inwall of through hole.
Preferably, described magnet and magnetic conductive board are adhesively fixed by glue.
Preferably, described pcb board and magnetic conductive board are adhesively fixed by glue.
Preferably, the upper end of described voice coil loudspeaker voice coil and oscillating plate are adhesively fixed by glue.
Superminiature moving-coil type electro-acoustic conversing device disclosed by the invention, it needs the large building block of the magnet of magnetic conductive board, ring-type, pcb board, oscillating plate and voice coil loudspeaker voice coil five, without using the comparatively large and support of heaviness, above-mentioned parts are fixed, the volume of electroacoustic transducer is enable greatly to reduce and accomplish superminiature, simultaneously, also simplify product structure, be more easy to assembling.In addition, lead-in wire stretches out through through hole, thus the extended distance of lead-in wire in cavity is substantially reduced, without the need to playing glue to oscillating plate, decrease the load of oscillating plate, avoid because oscillating plate plays glue and cause harmful effect, making this electroacoustic transducer can fully meet the requirements such as high power, low distortion, lower resonant frequency, wide working band.
Accompanying drawing explanation
Fig. 1 is the side sectional view of superminiature moving-coil type electro-acoustic conversing device of the present invention.
Fig. 2 is the side sectional view of existing receiver.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in more detail.
The invention discloses a kind of superminiature moving-coil type electro-acoustic conversing device, as shown in Figure 1, it includes a magnetic conductive board 1, the magnet 2 of one ring-type, one pcb board 3, one oscillating plate 4 and a voice coil loudspeaker voice coil 5, the pars intermedia of described magnetic conductive board 1 is protruding upward conducting magnetic column 6, described magnet 2 with magnetic conductive board 1 stacked on top of one another and the two be fixedly connected with, described oscillating plate 4 is covered on the top of magnet 2, and described oscillating plate 4, magnet 2 and magnetic conductive board 1 surround and are formed with a cavity, described magnet 2 is surrounded on conducting magnetic column 6 and there is space 7 therebetween, the upper end of described voice coil loudspeaker voice coil 5 is fixedly connected on oscillating plate 4, the lower end of described voice coil loudspeaker voice coil 5 extends and is surrounded on described conducting magnetic column 6 in the space 7 between magnet 2 and conducting magnetic column 6, described pcb board 3 is fixedly connected on the bottom of magnetic conductive board 1, described conducting magnetic column 6 offers the through hole 8 will be communicated with inside and outside described cavity, the lead-in wire 9 of described voice coil loudspeaker voice coil 5 is welded in pcb board 3 through described through hole 8.
In above-mentioned electroacoustic transducer, magnetic circuit is formed by magnetic conductive board 1, magnet 2 and conducting magnetic column 6, voice coil loudspeaker voice coil 5 is surrounded on conducting magnetic column 6, conducting magnetic column 6 is provided with through hole 8, an effect of this through hole 8 is that the air flowing inside and outside for cavity provides passage, make voice coil loudspeaker voice coil 5 drive oscillating plate 4 vibration sounding, another effect of this through hole 8 is 9 to provide cable tray for going between, and lead-in wire 9 can be stretched out outside cavity and be soldered to pcb board 3.The electroacoustic transducer that the present invention proposes, it needs the large building block of the magnet 2 of magnetic conductive board 1, ring-type, pcb board 3, oscillating plate 4 and voice coil loudspeaker voice coil 5 five, without using the comparatively large and support of heaviness, above-mentioned parts are fixed, the volume of electroacoustic transducer is enable greatly to reduce and accomplish superminiature, simultaneously, also simplify product structure, be more easy to assembling.In addition, lead-in wire 9 stretches out through through hole 8, thus the extended distance of lead-in wire 9 in cavity is substantially reduced, without the need to oscillating plate 4 dozens of glue, decrease the load of oscillating plate 4, avoid and cause harmful effect because of oscillating plate 4 dozens of glue, make this electroacoustic transducer can fully meet the requirements such as high power, low distortion, lower resonant frequency, wide working band.
As a kind of optimal way, described through hole 8 is for passing vertically through the through hole of conducting magnetic column 6, and in practical application, this through hole 8 can be arranged at the vertical centerline of conducting magnetic column 6.Further, the inwall of described through hole 8 is stepped, and the inner diameter of this through hole 8 from top to bottom increases successively, and above-mentioned step structure can not only reduce product materials and product weight, also contribute to because the opening of through hole 8 lower end is enough large lead-in wire through.
In order to avoid the edge of oscillating plate 4 leaks gas, the edge of described oscillating plate 4 is fixedly connected with magnet 2 is airtight, specifically airtight fixing by glue.
In the present embodiment, the quantity of described lead-in wire 9 is two, and described lead-in wire 9 extends along the inwall of through hole 8.For the ease of processing, described magnetic conductive board 1 is shaping with conducting magnetic column 6 integrated punching.In addition, described magnet 2 is adhesively fixed by glue with magnetic conductive board 1, and described pcb board 3 is adhesively fixed by glue with magnetic conductive board 1, and upper end and the oscillating plate 4 of described voice coil loudspeaker voice coil 5 are adhesively fixed by glue.
Superminiature moving-coil type electro-acoustic conversing device disclosed by the invention only needs the large building block of magnetic conductive board 1, magnet 2, pcb board 3, oscillating plate 4 and voice coil loudspeaker voice coil 5 five, without the need to supporting structure, electroacoustic transducer is enable to reach superminiature specification, simultaneously, lead-in wire 9 can stretch out through through hole 8, thus without the need to oscillating plate 4 dozens of glue, this electroacoustic transducer is made can fully to meet the requirements such as high power, low distortion, lower resonant frequency, wide working band.
The above is preferred embodiment of the present invention, is not limited to the present invention, all make in technical scope of the present invention amendment, equivalent to replace or improvement etc., all should be included in scope that the present invention protects.
Claims (10)
1. a superminiature moving-coil type electro-acoustic conversing device, it is characterized in that, include a magnetic conductive board, the magnet of one ring-type, one pcb board, one oscillating plate and a voice coil loudspeaker voice coil, the pars intermedia of described magnetic conductive board is protruding upward conducting magnetic column, described magnet with magnetic conductive board stacked on top of one another and the two be fixedly connected with, described oscillating plate is covered on the top of magnet, and described oscillating plate, magnet and magnetic conductive board surround and are formed with a cavity, described magnet ring is around in conducting magnetic column and there is space therebetween, the upper end of described voice coil loudspeaker voice coil is fixedly connected on oscillating plate, the lower end of described voice coil loudspeaker voice coil extends and is surrounded on described conducting magnetic column in the space between magnet and conducting magnetic column, described pcb board is fixedly connected on the bottom of magnetic conductive board, described conducting magnetic column offers the through hole will be communicated with inside and outside described cavity, the lead-in wire of described voice coil loudspeaker voice coil is welded in pcb board through described through hole.
2. superminiature moving-coil type electro-acoustic conversing device as claimed in claim 1, it is characterized in that, described through hole is the through hole passing vertically through conducting magnetic column.
3. superminiature moving-coil type electro-acoustic conversing device as claimed in claim 2, it is characterized in that, the inwall of described through hole is stepped, and the inner diameter of this through hole from top to bottom increases successively.
4. superminiature moving-coil type electro-acoustic conversing device as claimed in claim 1, it is characterized in that, the edge of described oscillating plate is fixedly connected with magnet is airtight.
5. superminiature moving-coil type electro-acoustic conversing device as claimed in claim 1, it is characterized in that, the quantity of described lead-in wire is two.
6. superminiature moving-coil type electro-acoustic conversing device as claimed in claim 1, is characterized in that, described magnetic conductive board and conducting magnetic column integrated punching shaping.
7. superminiature moving-coil type electro-acoustic conversing device as claimed in claim 1, it is characterized in that, described lead-in wire extends along the inwall of through hole.
8. superminiature moving-coil type electro-acoustic conversing device as claimed in claim 1, it is characterized in that, described magnet and magnetic conductive board are adhesively fixed by glue.
9. superminiature moving-coil type electro-acoustic conversing device as claimed in claim 1, it is characterized in that, described pcb board and magnetic conductive board are adhesively fixed by glue.
10. superminiature moving-coil type electro-acoustic conversing device as claimed in claim 1, it is characterized in that, upper end and the oscillating plate of described voice coil loudspeaker voice coil are adhesively fixed by glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410675579.1A CN104378722A (en) | 2014-11-21 | 2014-11-21 | Ultra-miniature moving-coil electric-acoustic converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410675579.1A CN104378722A (en) | 2014-11-21 | 2014-11-21 | Ultra-miniature moving-coil electric-acoustic converter |
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| Publication Number | Publication Date |
|---|---|
| CN104378722A true CN104378722A (en) | 2015-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410675579.1A Pending CN104378722A (en) | 2014-11-21 | 2014-11-21 | Ultra-miniature moving-coil electric-acoustic converter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109716789A (en) * | 2016-09-02 | 2019-05-03 | 东京音响株式会社 | Electroacoustic transducer |
| CN110832882A (en) * | 2017-06-28 | 2020-02-21 | 歌乐株式会社 | Loudspeaker |
Citations (6)
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|---|---|---|---|---|
| NZ203080A (en) * | 1982-02-09 | 1986-05-09 | Int Standard Electric Corp | Moving coil electroacoustic transducer:two part diaphragm supports coil |
| CN2337734Y (en) * | 1998-05-15 | 1999-09-08 | 付殿良 | Discrete driving radial moving-coil loudspeaker |
| EP1414267A2 (en) * | 2002-10-22 | 2004-04-28 | AKG Acoustics GmbH | Miniaturized loudspeakers |
| CN103747400A (en) * | 2013-12-30 | 2014-04-23 | 天津洪波电子集团有限公司 | Thin moving-coil loudspeaker |
| CN203691621U (en) * | 2013-12-17 | 2014-07-02 | 东莞泉声电子有限公司 | Moving-coil type metallic packaging horn |
| CN204231660U (en) * | 2014-11-21 | 2015-03-25 | 音品电子（深圳）有限公司 | A kind of superminiature moving-coil type electro-acoustic conversing device |
-
2014
- 2014-11-21 CN CN201410675579.1A patent/CN104378722A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ203080A (en) * | 1982-02-09 | 1986-05-09 | Int Standard Electric Corp | Moving coil electroacoustic transducer:two part diaphragm supports coil |
| CN2337734Y (en) * | 1998-05-15 | 1999-09-08 | 付殿良 | Discrete driving radial moving-coil loudspeaker |
| EP1414267A2 (en) * | 2002-10-22 | 2004-04-28 | AKG Acoustics GmbH | Miniaturized loudspeakers |
| CN203691621U (en) * | 2013-12-17 | 2014-07-02 | 东莞泉声电子有限公司 | Moving-coil type metallic packaging horn |
| CN103747400A (en) * | 2013-12-30 | 2014-04-23 | 天津洪波电子集团有限公司 | Thin moving-coil loudspeaker |
| CN204231660U (en) * | 2014-11-21 | 2015-03-25 | 音品电子（深圳）有限公司 | A kind of superminiature moving-coil type electro-acoustic conversing device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109716789A (en) * | 2016-09-02 | 2019-05-03 | 东京音响株式会社 | Electroacoustic transducer |
| CN110832882A (en) * | 2017-06-28 | 2020-02-21 | 歌乐株式会社 | Loudspeaker |
| US10887702B2 (en) | 2017-06-28 | 2021-01-05 | Clarion Co., Ltd. | Loudspeaker |
| CN110832882B (en) * | 2017-06-28 | 2021-05-25 | 歌乐株式会社 | Loudspeaker |
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| PB01 | Publication | ||
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Application publication date: 20150225 |