CN201369819Y - Micro type electro-acoustic energy sound generating device - Google Patents
Micro type electro-acoustic energy sound generating device Download PDFInfo
- Publication number
- CN201369819Y CN201369819Y CNU2009201299585U CN200920129958U CN201369819Y CN 201369819 Y CN201369819 Y CN 201369819Y CN U2009201299585 U CNU2009201299585 U CN U2009201299585U CN 200920129958 U CN200920129958 U CN 200920129958U CN 201369819 Y CN201369819 Y CN 201369819Y
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- voice coil
- skeleton
- coil loudspeaker
- acoustic energy
- loudspeaker voice
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Abstract
The utility model relates to an electro-acoustic energy sound generating device, in particular to a micro type electro-acoustic energy sound generating device. The structure of a voice coil of the micro type electro-acoustic energy sound generating device is improved. A ring-shaped skeleton is arranged on a vibration diaphragm, the voice coil is wound on the skeleton, and the voice coil and the skeleton are suspended in a magnetic gap of a magnetic circuit system, so that the voice coil can obtain the ideal position in the magnetic gap and effectively transmit an electromagnetic driving force to the vibration diaphragm so as to obtain better characteristics; moreover, as the skeleton which can exert the cushioning action is connected with the vibration diaphragm and the voice coil, glue which is coated on the vibration diaphragm can be avoided from not being directly in line contact with the voice coil; even if the voice coil emits heat due to motion, the vibration diaphragm cannot be shed off or the voice coil cannot be deformed due to being heated, thereby increasing the bearing power of the sound generating device and being beneficial for improving the product performance.
Description
[technical field]
The utility model relates to a kind of electroacoustic energy microphone device, refers to that specifically a kind of miniature electro-acoustic of voice coil loudspeaker voice coil architecture advances can microphone device.
[background technology]
Development along with wireless telecommunications, Global Mobile Phone Users is more and more, the user not only is satisfied with conversation to the requirement of mobile phone, and want high-quality communication effect can be provided, especially at present the development of mobile multimedia technology, the speech quality of mobile phone becomes more important, and the microphone of mobile phone is as the voice pick device of mobile phone, and its design quality directly influences speech quality.
At present, the mini-sound device of dependency structure comprises the basin frame of square shape, joins with the basin frame and is provided with the loam cake in hole, and basin frame and loam cake form a cavity volume.Be provided with the magnetic circuit system, the magnetic circuit system that are contained in the basin frame in this cavity volume and be provided with the voice coil loudspeaker voice coil that is connected with vibrating diaphragm, voice coil loudspeaker voice coil is suspended in the magnetic gap of described magnetic circuit system; The bottom of basin frame is provided with the circuit board that realization links to each other with external circuit, the passing the hole that the basin frame is provided with into and out of line and link to each other with circuit board of voice coil loudspeaker voice coil.When feeding the alternation tone currents on circuit board, voice coil loudspeaker voice coil is subjected to the motive force of alternation in magnetic gap, produces alternate motion, thereby drives the vibrating diaphragm vibration, sounds.
The mini-sound device of this structure is in working order the time, the metal material voice coil loudspeaker voice coil of motion is the main source that produces heat, and temperature can be higher than 100 degree, because voice coil loudspeaker voice coil is to be connected by glue with vibrating diaphragm, obviously vibrating diaphragm can't bear this high temperature, will cause vibrating diaphragm to come unstuck or the voice coil loudspeaker voice coil distortion; Moreover voice coil loudspeaker voice coil can not as much as possiblely be arranged in magnetic gap, and this will certainly influence magnetic property, and the performance that these all will influence mini-sound device causes product reliability low, thereby is necessary to study a kind of miniature electro-acoustic energy microphone device with new construction.
[utility model content]
The utility model at solve voice coil temperature too high cause shaking touching come off or the problem of voice coil loudspeaker voice coil distortion, and provide the structure improved miniature electro-acoustic of a kind of voice coil loudspeaker voice coil can microphone device.
Miniature electro-acoustic energy microphone device of the present utility model, comprise and be provided with the magnetic circuit system that has pole piece in the basin frame of accommodating the required element of this microphone device, the basin frame, be attached to the vibration unit on the basin frame, the vibrating diaphragm of wherein said vibration unit is provided with the skeleton of annular, voice coil loudspeaker voice coil is reeled around described skeleton, voice coil loudspeaker voice coil and skeleton are suspended in the magnetic gap of magnetic circuit system, voice coil loudspeaker voice coil is in vibration processes, and is constant with the overlapping area of pole piece.
Further improve as the utility model, 2/3 part of voice coil loudspeaker voice coil is arranged in the magnetic gap of magnetic circuit system.
Described voice coil loudspeaker voice coil is wound on the middle part of skeleton.
The two ends of skeleton are not all wrapped up by voice coil loudspeaker voice coil.
The utility model miniature electro-acoustic energy microphone device, described vibrating diaphragm is provided with ring skeleton, voice coil loudspeaker voice coil is wound on the skeleton, make more voice coil loudspeaker voice coil partly be suspended in the magnetic gap of magnetic circuit system, voice coil loudspeaker voice coil obtains desirable position in magnetic gap like this, also just obtain higher magnetic property, electromagnetic actuation force effectively is delivered to vibrating diaphragm to obtain characteristic preferably; And because skeleton connects vibrating diaphragm and voice coil loudspeaker voice coil, skeleton plays cushioning effect, the glue of avoiding smearing on the vibrating diaphragm does not directly contact with voice coil line, even when voice coil loudspeaker voice coil motion adstante febre, vibrating diaphragm also can not come off or the voice coil loudspeaker voice coil temperature distortion, thereby improve the born power of microphone device, help properties of product and improve reliably.
[description of drawings]
Fig. 1 is an assembling schematic diagram of the present utility model;
Fig. 2 is a generalized section of the present utility model;
Fig. 3 is the enlarged diagram of A portion among Fig. 2;
Fig. 4 is the schematic perspective view of the utility model vibration unit.
[embodiment]
The utility model is described in further detail below in conjunction with drawings and embodiments.
As shown in Figure 1, the utility model miniature electro-acoustic can microphone device comprises the basin frame 110 of accommodating the required element of this microphone device, is attached to vibration unit 120 on the basin frame 110, and drives the magnetic circuit system 130 of vibration unit 120 motions; Vibration unit 120 comprises vibrating diaphragm 121, voice coil loudspeaker voice coil 122, skeleton 123, and magnetic circuit system comprises magnet frame 131, magnet steel 132 and pole piece 133; Voice coil loudspeaker voice coil connects the circuit board of the external application electric connection of basin frame 110 bottoms, and circuit board and external circuit are electrical connected to realize the input audio electrical signal.When feeding the alternation tone currents on circuit board, voice coil loudspeaker voice coil 122 is subjected to the motive force of alternation in magnetic circuit system 130, produces alternate motion, thereby drives vibrating diaphragm 121 vibration at a high speed, sounds.
As shown in Figure 4, the vibrating diaphragm of vibration unit 120 is provided with skeleton 123, coiling voice coil loudspeaker voice coil 122 on the described skeleton 123, because voice coil loudspeaker voice coil will be suspended in the magnetic circuit system 130, so the voice coil loudspeaker voice coil 122 and the skeleton that depend on the skeleton 123 are consistent shape, here be example with runway shape annular, skeleton 123 also can be annular certainly, and the voice coil loudspeaker voice coil 122 that then depends on it also must become annular; Described voice coil loudspeaker voice coil 122 is wound on the middle part of skeleton 123, can make voice coil loudspeaker voice coil 122 obtain desirable position in magnetic circuit system 130, and electromagnetic actuation force effectively is delivered to vibrating diaphragm to obtain characteristic preferably.
Shown in Fig. 2,3, the two ends of skeleton 123 are not all wrapped up by voice coil loudspeaker voice coil 122, there is one section small distance the both ends of the surface bottom that is to say voice coil loudspeaker voice coil 122 in the both ends of the surface bottom of astragalus frame 123 respectively, because this small distance, even voice coil loudspeaker voice coil 122 motion heatings, also can not damage the glue of smearing on the vibrating diaphragm, also avoid voice coil loudspeaker voice coil 122 to come off from skeleton 123, this small distance is less than 0.5mm usually.The voice coil loudspeaker voice coil 122 that has a skeleton 123 has at least 2/3 part to be suspended in the magnetic gap 134; Because the effect of skeleton 123, make voice coil loudspeaker voice coil 122 at every turn last, the below is when coming and going vibration, area by the magnetic line of force between pole piece 133 and the magnet frame 131 is constant, both the overlapping area of voice coil loudspeaker voice coil and pole piece was constant, and the voice coil loudspeaker voice coil 122 of employing band skeleton 123, can improve the power that bears of monomer, in the microphone device motion process, voice coil loudspeaker voice coil 122 is thermogenetic sources, the temperature of voice coil loudspeaker voice coil tends to be higher than 100 degree, have skeleton 123 on the voice coil loudspeaker voice coil 122 of the present utility model, and there is one section slight distance the both ends of the surface of voice coil loudspeaker voice coil 122 bottom in the bottom of the both ends of the surface of astragalus frame 123 respectively, can avoid the voice coil loudspeaker voice coil 122 of high temperature directly to contact with glue or vibrating diaphragm 121, glue or vibrating diaphragm 121 are not subjected to the influence of high temperature like this, vibrating diaphragm 121 can not come unstuck or be out of shape, and skeleton 123 is arranged as buffering, vibrating diaphragm 121 does not directly contact with voice coil loudspeaker voice coil 122, can not be damaged yet, thereby improve the born power of microphone device, the voice coil loudspeaker voice coil 122 of metal material obtains the support of skeleton 123, at high temperature also be not easy to loose and enclose or distortion, make that the electric connection of product is stable, thereby enhance product performance.
Above-described only is execution mode of the present utility model; should be pointed out that for the person of ordinary skill of the art at this, under the prerequisite that does not break away from the utility model creation design; can also make improvement, but these all belong to protection range of the present utility model.
Claims (4)
1, a kind of miniature electro-acoustic energy microphone device, comprise and be provided with the magnetic circuit system that has pole piece in the basin frame of accommodating the required element of this microphone device, the basin frame, be attached to the vibration unit on the basin frame, it is characterized in that: the vibrating diaphragm of described vibration unit is provided with the skeleton of annular, voice coil loudspeaker voice coil is reeled around described skeleton, voice coil loudspeaker voice coil and skeleton are suspended in the magnetic gap of magnetic circuit system, voice coil loudspeaker voice coil is in vibration processes, and is constant with the overlapping area of pole piece.
2, miniature electro-acoustic energy microphone device according to claim 1, it is characterized in that: 2/3 part of voice coil loudspeaker voice coil is arranged in the magnetic gap of magnetic circuit system.
3, miniature electro-acoustic energy microphone device according to claim 1, it is characterized in that: described voice coil loudspeaker voice coil is wound on the middle part of skeleton.
4, miniature electro-acoustic energy microphone device according to claim 1, it is characterized in that: the two ends of skeleton are not all wrapped up by voice coil loudspeaker voice coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201299585U CN201369819Y (en) | 2009-02-20 | 2009-02-20 | Micro type electro-acoustic energy sound generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201299585U CN201369819Y (en) | 2009-02-20 | 2009-02-20 | Micro type electro-acoustic energy sound generating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201369819Y true CN201369819Y (en) | 2009-12-23 |
Family
ID=41488706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201299585U Expired - Lifetime CN201369819Y (en) | 2009-02-20 | 2009-02-20 | Micro type electro-acoustic energy sound generating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201369819Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017157329A1 (en) * | 2016-03-17 | 2017-09-21 | Sound Solutions International Co., Ltd. | Electroacoustic transducer with improved thermal characteristics |
| WO2021134184A1 (en) * | 2019-12-30 | 2021-07-08 | 瑞声声学科技(深圳)有限公司 | Sound emission device |
| WO2022110470A1 (en) * | 2020-11-30 | 2022-06-02 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| WO2023000974A1 (en) * | 2021-07-19 | 2023-01-26 | 华为技术有限公司 | Loudspeaker and electronic device |
-
2009
- 2009-02-20 CN CNU2009201299585U patent/CN201369819Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017157329A1 (en) * | 2016-03-17 | 2017-09-21 | Sound Solutions International Co., Ltd. | Electroacoustic transducer with improved thermal characteristics |
| WO2021134184A1 (en) * | 2019-12-30 | 2021-07-08 | 瑞声声学科技(深圳)有限公司 | Sound emission device |
| WO2022110470A1 (en) * | 2020-11-30 | 2022-06-02 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| WO2023000974A1 (en) * | 2021-07-19 | 2023-01-26 | 华为技术有限公司 | Loudspeaker and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091223 |
|
| CX01 | Expiry of patent term |