CN201608873U - Electroacoustic sounder - Google Patents
Electroacoustic sounder Download PDFInfo
- Publication number
- CN201608873U CN201608873U CN2009202614623U CN200920261462U CN201608873U CN 201608873 U CN201608873 U CN 201608873U CN 2009202614623 U CN2009202614623 U CN 2009202614623U CN 200920261462 U CN200920261462 U CN 200920261462U CN 201608873 U CN201608873 U CN 201608873U
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- magnetic
- vent
- air
- electroacoustic
- voice coil
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Abstract
The utility model relates to the field of electroacoustic sounders, in particular to an improved electroacoustic sounder of a magnetic path unit structure; the bottom part of a magnetic bowl is provided with an air vent for balancing the air pressure in a sounder cavity; when a sound coil drives a vibrating membrane at high frequency, the sound pressure can leak from the air vent so as to reduce damping of the vibrating membrane, obtain high sensitivity, avoid the phenomenon of transient distortion and be beneficial to reliability of sound quality of the sounder.
Description
[technical field]
The utility model relates to a kind of electroacoustic energy acoustical generator field, refers to that specifically a kind of electroacoustic of magnetic circuit unit 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 loud speaker of mobile phone is as the sound generating mechanism of mobile phone, and its design quality directly influences speech quality.
At present, the mini-sound device of dependency structure comprises that acoustical generator body, part are positioned at the intrinsic vibration unit of acoustical generator, wherein the acoustical generator body has the basin frame of accommodating cavity, magnetic circuit system, the magnetic circuit system in the basin frame is provided with the voice coil loudspeaker voice coil that is connected with vibration unit, the part voice coil loudspeaker voice coil is suspended in the magnetic gap of described magnetic circuit system, and the voice coil loudspeaker voice coil of ring-type is bonded in the voice coil loudspeaker voice coil position on vibrating diaphragm ball top fully; Magnetic circuit system comprises that the magnet steel of magnetic bowl, the sheet of peviform forms, and 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.
When voice coil loudspeaker voice coil is done high frequency motion in this structure mini microphone device in magnetic gap, air-flow in the magnetic gap can not discharge rapidly and will produce certain air pressure, transient state is exactly to have increased damping in brief, then the sensitivity of vibrating diaphragm does not catch up with the reaction speed of music rhythm, to produce transient distortion, have a strong impact on the definition of sound, cause product reliability low, thereby be necessary to study a kind of electroacoustic energy microphone device with new construction.
[utility model content]
The utility model is at acoustical generator internal cavity air pressure imbalance, and causes sensitivity low, easily produces the problem of transient distortion, and provides the structure improved electroacoustic of a kind of magnetic circuit unit can microphone device.
Electroacoustic energy microphone device of the present utility model, comprise the acoustical generator body, be provided with the magnetic circuit system of vibration unit and driving vibration unit in the acoustical generator body, magnetic circuit system comprises magnetic bowl and magnet, the gap that constitutes between magnetic bowl and the magnet is a magnetic gap, offer at least one air-vent on the wherein said magnetic bowl bottom, this air-vent and magnetic gap connect.
Preferably, described air-vent is evenly distributed.
The major axis of the relative magnetic bowl bottom of described air-vent is symmetrical distribution.
Described air-vent is six.
Described air-vent is over against magnetic gap.
The utility model electroacoustic energy microphone device, offer the air-vent of balance acoustical generator inside cavity air pressure at the magnetic bowl bottom, when voice coil loudspeaker voice coil drives the vibrating diaphragm high frequency motion, acoustic pressure can be leaked from air-vent, to reduce the damping of vibrating diaphragm, obtain high sensitivity, avoid the phenomenon of transient distortion to produce, help the reliable of acoustical generator tonequality.
[description of drawings]
Fig. 1 is the utility model acoustical generator structural representation;
Fig. 2 is the utility model magnetic circuit system structural representation;
Fig. 3 is the utility model magnetic circuit system front view.
[embodiment]
The utility model is described in further detail below in conjunction with drawings and embodiments.
As shown in Figure 1, 2, be one preferred embodiment of the utility model electroacoustic energy microphone device, it comprises acoustical generator body 100, the magnetic circuit system 110 of the vibration unit of acoustical generator body 100 involving vibrations sounding and the vibration of driving vibrating diaphragm, basin frame, the basin frame of promptly accommodating the required element of this microphone device have annular accepting hole, accommodate magnetic bowl 111 in the annular accepting hole, magnet steel 112 is arranged in the magnetic bowl 111, be provided with pole piece above the magnet steel, and magnet steel 112 has certain interval apart from the sidewall 1110 of magnetic bowl 111, this gap is a magnetic gap 113, and the invisible magnetic line of force is arranged in the magnetic gap 113.Suspend in the magnetic gap 113 part voice coil loudspeaker voice coil of vibration unit, voice coil loudspeaker voice coil top is connecting vibrating diaphragm, and the vibrating diaphragm sky is covering loam cake.When feeding the alternation tone currents, voice coil loudspeaker voice coil is subjected to the motive force of alternation in magnetic gap 113, cut the highdensity magnetic line of force, thereby drives the reaction speed vibration that vibrating diaphragm is followed music rhythm, sends sound clearly.Offer six air-vents 1111 in the present embodiment on magnetic bowl 111 bottoms, each air-vent 1111 connects with magnetic gap 113, when voice coil loudspeaker voice coil drives the vibrating diaphragm high frequency motion, acoustic pressure can be leaked to external environment by air-vent 1111 in magnetic gap 113, to reduce the damping of vibrating diaphragm, obtain high sensitivity, avoid the phenomenon of transient distortion to produce.In order to make the better effects if of leaking air pressure, described air-vent 111 is over against magnetic gap 113; Certainly, the quantity of air-vent 1111 can be set according to the actual requirements, but is at least one.
As shown in Figure 3, on magnetic gap 113 positions of magnetic bowl 111 bottoms, connect and be provided with six air-vents 1111, when voice coil loudspeaker voice coil drives the vibrating diaphragm high frequency motion, acoustic pressure can be leaked to external environment condition by air-vent 1111 in magnetic gap 113, to reduce the damping of vibrating diaphragm, obtain high sensitivity, avoid the phenomenon of transient distortion to produce, help the reliable of acoustical generator tonequality.Certainly, form the long arc section that the air-vent 1111 that leaks acoustic pressure is not limited to be arranged on magnetic bowl 111 bottoms, also can be positioned at the minor face section, can constitute the air-vent 1111 that leaks acoustic pressure equally.In addition, described air-vent 111 is evenly distributed, and it is comparatively even to leak air pressure like this, and the major axis of air-vent 111 relative magnetic bowls 111 bottoms is symmetrical distribution in the present embodiment.
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 (5)
1. an electroacoustic can microphone device, comprise the acoustical generator body, be provided with the magnetic circuit system of vibration unit and driving vibration unit in the acoustical generator body, magnetic circuit system comprises magnetic bowl and magnet, the gap that constitutes between magnetic bowl and the magnet is a magnetic gap, it is characterized in that: offer at least one air-vent on the described magnetic bowl bottom, this air-vent and magnetic gap connect.
2. electroacoustic energy microphone device according to claim 1, it is characterized in that: described air-vent is evenly distributed.
3. electroacoustic energy microphone device according to claim 1 and 2, it is characterized in that: the major axis of the relative magnetic bowl bottom of described air-vent is symmetrical distribution.
4. electroacoustic energy microphone device according to claim 1, it is characterized in that: described air-vent is six.
5. electroacoustic energy microphone device according to claim 1, it is characterized in that: described air-vent is over against magnetic gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202614623U CN201608873U (en) | 2009-12-14 | 2009-12-14 | Electroacoustic sounder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202614623U CN201608873U (en) | 2009-12-14 | 2009-12-14 | Electroacoustic sounder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201608873U true CN201608873U (en) | 2010-10-13 |
Family
ID=42953572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202614623U Ceased CN201608873U (en) | 2009-12-14 | 2009-12-14 | Electroacoustic sounder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201608873U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102056059A (en) * | 2011-01-05 | 2011-05-11 | 瑞声声学科技(深圳)有限公司 | Multifunctional acoustic generator |
| CN102833651A (en) * | 2012-08-24 | 2012-12-19 | 江西联创宏声电子有限公司 | Sectionally coated spring plate and electric acoustic device using same |
| WO2021120286A1 (en) * | 2019-12-18 | 2021-06-24 | 歌尔股份有限公司 | Sounding device and electronic terminal |
-
2009
- 2009-12-14 CN CN2009202614623U patent/CN201608873U/en not_active Ceased
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102056059A (en) * | 2011-01-05 | 2011-05-11 | 瑞声声学科技(深圳)有限公司 | Multifunctional acoustic generator |
| CN102833651A (en) * | 2012-08-24 | 2012-12-19 | 江西联创宏声电子有限公司 | Sectionally coated spring plate and electric acoustic device using same |
| WO2021120286A1 (en) * | 2019-12-18 | 2021-06-24 | 歌尔股份有限公司 | Sounding device and electronic terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20161124 Decision number of declaring invalidation: 30590 Granted publication date: 20101013 |
|
| IW01 | Full invalidation of patent right |