CN202818589U - Micro sounding device - Google Patents
Micro sounding device Download PDFInfo
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- CN202818589U CN202818589U CN 201220429847 CN201220429847U CN202818589U CN 202818589 U CN202818589 U CN 202818589U CN 201220429847 CN201220429847 CN 201220429847 CN 201220429847 U CN201220429847 U CN 201220429847U CN 202818589 U CN202818589 U CN 202818589U
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- Prior art keywords
- magnet portion
- mini
- sound device
- pole piece
- vibrating diaphragm
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Abstract
The utility model provides a micro sounding device. The micro sounding device comprises a vibration system and a magnetic circuit system. The vibration system comprises a diaphragm and a voice coil, the diaphragm comprises a ball top part and a folding ring part. The magnetic circuit system comprises a lower plate, a first magnet part arranged on the lower plate and a second magnet part surrounding the first magnet part and apart from the first magnet part in a certain distance. At least one of the first magnet part and the second magnet part is a permanent magnet, a magnetic clearance is formed between the first magnet part and the second magnet part, and the voice coil is suspended in the magnetic clearance. The folding ring part of the diaphragm is fixed on the magnetic circuit system and the ball top part is apart from the first magnet part in a certain distance, and the orthographic projection surface of the diaphragm does not exceed the contour of the lower plate. Compared with the related technology, the micro sounding device has the advantages of higher sensitivity, and better acoustic performance.
Description
[technical field]
The utility model relates to a kind of microphone device.Relate in particular to a kind of mini-sound device that is used in the portable type electronic product field.
[background technology]
In the process of the portable equipment fast developments such as mobile phone, people are more and more stronger to the Functional Requirement of product, particularly for this function of Music Appreciation of mobile phone, the acoustical quality of its sound is the focus of people's pursuit especially, thus, be used in the also corresponding quickening of development of the mini-sound device in the portable equipment.
The mini-sound device of correlation technique comprises the basin frame, is fixed on vibrational system and magnetic circuit system on the described basin frame.Described vibrational system comprises the vibrating diaphragm on the fixing described basin frame; Described magnetic circuit system comprises the magnetic bowl that is fixed on the described basin frame and is positioned at the magnet steel of described magnetic bowl.
Yet, the mini-sound device of correlation technique takies than large space because of its basin frame, so that whole mini-sound device is under the prerequisite of given volume, the volume of its magnetic circuit system is subject to larger restriction, thereby so that the performances such as sensitivity of the mini-sound device of correlation technique limited to.
Therefore, be necessary to provide a kind of mini-sound device of new construction to overcome the problems referred to above in fact.
[utility model content]
The technical problem that the utility model need solve provides a kind of highly sensitive mini-sound device.
According to above-mentioned technical problem, designed a kind of mini-sound device, its objective is such realization: a kind of mini-sound device, its involving vibrations system and magnetic circuit system.Described vibrational system comprises vibrating diaphragm and drives the voice coil loudspeaker voice coil of described vibrating diaphragm vibration that described vibrating diaphragm comprises ball top and the ring section of being extended by the bending of described ball top.Described magnetic circuit system comprises lower plate and places the first magnet portion of described lower plate central authorities and around described the first magnet portion setting and second magnet portion separated by a distance with it, have at least one to be permanent magnet in described the first magnet portion and described the second magnet portion.Form magnetic gap between described the first magnet portion and described the second magnet portion, described voice coil loudspeaker voice coil is suspended in the described magnetic gap.Wherein, the ring section of described vibrating diaphragm be fixed on the described magnetic circuit system and described ball top and described the first magnet portion separated by a distance, the frontal plane of projection of described vibrating diaphragm does not exceed the profile scope of described lower plate.
Preferably, described the second magnet portion is made as several and each described second magnet portion does not link to each other mutually, and described magnetic circuit system also comprises ring-type the second pole piece that is sticked on described the second magnet portion.
Preferably, described mini-sound device also comprises the pad that is arranged on the ring-type on described the second pole piece, and the ring section of described vibrating diaphragm is fixed on the described pad.
Preferably, described ring section comprises that to away from the depressed part of described the second pole piece direction depression and the fixed part that is extended by described depressed part, described fixed part is fixed on the described pad.
Preferably, described the second pole piece and described pad are structure as a whole.
Preferably, described the second pole piece is higher than described the first magnet portion in the direction perpendicular to described lower plate, and the ring section of described vibrating diaphragm is fixed on described the second pole piece.
Preferably, described ring section comprises that to away from the depressed part of described the second pole piece direction depression and the fixed part that is extended by described depressed part, described fixed part is fixed on described the second pole piece.
Preferably, described the second magnet portion is provided with four.
Preferably, described magnetic circuit system also comprises the first pole piece that is sticked on described the first magnet portion, and described ball top and described the first pole piece are separated by a distance.
Preferably, described mini-sound device comprises that also lid is located at the protecgulum on the described vibrating diaphragm, and described protecgulum is provided with the vocal hole that runs through on it.
Compare with correlation technique, the utility model mini-sound device is highly sensitive, and acoustical behavior is excellent.
[description of drawings]
Fig. 1 is the first execution mode three-dimensional structure diagram of the utility model mini-sound device.
Fig. 2 is the first execution mode stereochemical structure exploded view of the utility model mini-sound device.
Fig. 3 is along A-A line cutaway view among Fig. 1.
Fig. 4 is the second execution mode structural representation of the utility model mini-sound device.
Fig. 5 is the first magnetic structure schematic diagram of the utility model mini-sound device.
Fig. 6 is the second magnetic structure schematic diagram of the utility model mini-sound device.
Fig. 7 is the third magnetic structure schematic diagram of the utility model mini-sound device.
[embodiment]
The utility model is described in further detail below in conjunction with drawings and embodiments.
As Figure 1-3, a kind of mini-sound device 10, its involving vibrations system 1 and magnetic circuit system 2.Vibrational system 1 comprises vibrating diaphragm 11 and drives the voice coil loudspeaker voice coil 12 of vibrating diaphragm 11 vibrations.Vibrating diaphragm 11 comprises ball top 111 and the ring section 112 of being extended by 111 bendings of ball top.Magnetic circuit system 2 comprises lower plate 21 and places the first magnet portion 221 of lower plate 21 central authorities to reach around the first magnet portion 221 setting and second magnet portion 222 separated by a distance with it, have at least one to be permanent magnet in the first magnet portion 221 and the second magnet portion 222, this structure is so that form magnetic gap (not label) between the first magnet portion 221 and the second magnet portion 222, voice coil loudspeaker voice coil 12 is suspended in the magnetic gap by vibrating diaphragm 11.In the present embodiment, the first magnet portion 221 and the second magnet portion 222 all are permanent magnet.The second magnet portion 222 can also can be Split type structure for an integral body in the form of a ring, concrete, in the utility model mini-sound device 10, the second magnet portion 222 is made as several and each the second magnet portion 222 mutual disjunct Split type structure, specifically is made as four here.The frontal plane of projection of vibrating diaphragm 11 does not exceed the profile scope of lower plate 21, and namely the frontal projected area of vibrating diaphragm 11 is less than or equal to the area of lower plate 21.
In the utility model, so-called magnetic circuit system refers to produce magnetic field, and the magnetic field that produces can be subjected to the combination of each element that the element in the system affects.
So-called lower plate is not limited only to tabularly, also can be the bowl bodies with sidewall, that is, have dull and stereotyped and by the sidewall that flat board extends, all can be referred to as lower plate as long as have the element of the base plate of placement magnet portion (such as magnet steel).
Said frontal plane of projection refers to perpendicular to the perspective plane on lower plate 21 directions in the utility model.Certainly, the area of said lower plate 21 refers to the area of lower plate 21 face that its outline surrounds when horizontal positioned in the utility model mini-sound device 10 on horizontal plane, but not the real area of lower plate 21 itself.
More excellent, mini-sound device 10 also arranges ring-type the second pole piece 232 that is sticked on the second magnet portion 222.Certainly, the second pole piece 232 also can follow the shape setting of the second magnet portion 222 to be several and mutual disjunct Split type structure.
The utility model mini-sound device 10 does not have the basin shelf structure, therefore, the ring section 112 of vibrating diaphragm 11 is fixed on the magnetic circuit system 2, and voice coil loudspeaker voice coil 12 is suspended in the magnetic gap, and make ball top 111 and the first magnet portion 221 separated by a distance, thereby provide oscillation space for vibrating diaphragm 11.Therefore, the ring section 112 of vibrating diaphragm 11 is fixed on the second pole piece 232, also can be to be fixed on the second magnet portion 222, make vibrating diaphragm 11 vibrations as long as voice coil loudspeaker voice coil 12 is suspended in the magnetic gap, namely make ball top 111 and the first magnet portion 221 separated by a distance.The utility model mini-sound device 10 can also arrange and cover the protecgulum 3 that is located on the vibrating diaphragm 11, and protecgulum 3 is provided with the vocal hole 31 that runs through on it.
Vibrating diaphragm 11 fixed forms of the utility model mini-sound device 10 specifically with two kinds of embodiment as further specifying the first execution mode:
Shown in ginseng Fig. 2-3, concrete, mini-sound device 10 also comprises the pad 24 that is arranged on the ring-type on the second pole piece 232, and the ring section 112 of vibrating diaphragm 11 is fixed on the pad 24.Because the setting of pad 24, so that the position that vibrating diaphragm 11 is fixed is higher than the position of the first magnet portion 221, therefore the certain distance so that the ball top 111 of vibrating diaphragm 11 and the first magnet portion 221 have been separated by also is vibrating diaphragm 11 oscillation space is provided.Certainly, in the present embodiment, magnetic circuit system 2 also can arrange the first pole piece 231 that is sticked on the first magnet portion 221, and the position that pad 24 is fixed vibrating diaphragm 11 is higher than the position of the first pole piece 231, makes ball top 111 and the first pole piece 231 separated by a distance.
In the present embodiment, vibrating diaphragm 11 is to be fixed on the pad 24, and pad 24 is positioned on the second pole piece 232, that is to say that vibrating diaphragm 11 is indirectly to be fixed on the second pole piece 232 by pad 24.The utility model mini-sound device 10 is not because there being the basin shelf structure, the assembly technology of simplifying, and in the situation of same volume, 2 of its magnetic circuit systems can be accomplished maximization, improved largely the actuating force of magnetic circuit system 2, thereby improved the sensitivity of mini-sound device 10, improved its acoustical behavior.
In order to improve greatly the reliability of mini-sound device 10, in the present embodiment, more excellent, ring section 112 comprises that to away from the depressed part 1121 of the second pole piece 232 directions depression and the fixed part 1122 that is extended by depressed part 1121, fixed part 1122 is fixed on the pad 24.1121 of depressed parts strike the first pole piece 231 for vibrating diaphragm 11 provides larger oscillation space when further having avoided vibrating diaphragm 11 vibration.Certainly, in the present embodiment, the second pole piece 231 also can be structure as a whole with pad 24.
The second execution mode, join shown in Figure 4, the second execution mode and the first execution mode of the utility model mini-sound device 10 are roughly the same, different is: the magnetic circuit system 2 of mini-sound device 10 does not arrange pad 24 in the present embodiment, the second pole piece 232 is higher than the first magnet portion 221 in the direction perpendicular to lower plate 21, and the ring section 112 of vibrating diaphragm 11 directly is fixed on the second pole piece 232.Because the second pole piece 232 is higher than the first magnet portion 221, therefore when being fixed on, ring section 112 make ball top 111 and the first magnet portion 221 separated by a distance on the second pole piece 232, and be ball top 111 oscillation space is provided.Concrete, 11 of vibrating diaphragms are that the fixed part 1122 by ring section 112 directly is fixed on the second pole piece 232.Certainly, magnetic circuit system 2 also can arrange the first pole piece 231 that is sticked on the first magnet portion 221 in the present embodiment, and the second pole piece 232 is higher than the first pole piece 231 in the direction perpendicular to lower plate 21, makes ball top 111 and the first pole piece 231 separated by a distance.
In the utility model mini-sound device 10, because have at least one to be permanent magnet in the first magnet portion 221 and the second magnet portion 222, therefore following three kinds of structures are arranged,
Ginseng Fig. 5, the first magnet portion 221 and the second magnet portion 222 all are permanent magnet.
Ginseng Fig. 6, the first magnet portion 221 is permanent magnet, the second magnet portion 222 is non-permanent magnet.
Ginseng Fig. 7, the second magnet portion 222 is permanent magnet, the first magnet portion 221 is non-permanent magnet.
Certainly, in above-mentioned three kinds of structures, the pole piece that can on the first magnet portion 221 and the second magnet portion 222, all be sticked, the pole piece that also can be only be sticked on therein, this all is feasible.
Compare with correlation technique, the utility model mini-sound device has saved the basin shelf structure, so that assembly technology is simple, and in the product of same volume, the magnetic circuit system of the utility model mini-sound device can be accomplished maximization, greatly improve the actuating force of magnetic circuit system, thereby improved the sensitivity of the utility model mini-sound device, improved acoustical behavior.In addition, the mini-sound device of correlation technique just strengthens magnetic circuit system in order to strengthen the magnetic circuit actuating force, but the basin shelf structure must be arranged.And the utility model mini-sound device has saved the basin shelf structure, with doing more of magnetic circuit system, has overcome technology prejudice in the situation of same volume.
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 (10)
1. mini-sound device, its involving vibrations system and magnetic circuit system, described vibrational system comprises vibrating diaphragm and drives the voice coil loudspeaker voice coil of described vibrating diaphragm vibration, described vibrating diaphragm comprises ball top and the ring section of being extended by the bending of described ball top, described magnetic circuit system comprises lower plate and places the first magnet portion of described lower plate central authorities and around described the first magnet portion setting and second magnet portion separated by a distance with it, have at least one to be permanent magnet in described the first magnet portion and described the second magnet portion, form magnetic gap between described the first magnet portion and described the second magnet portion, described voice coil loudspeaker voice coil is suspended in the described magnetic gap, it is characterized in that: the ring section of described vibrating diaphragm be fixed on the described magnetic circuit system and described ball top and described the first magnet portion separated by a distance, the frontal plane of projection of described vibrating diaphragm does not exceed the profile scope of described lower plate.
2. mini-sound device according to claim 1 is characterized in that: described the second magnet portion is made as several and each described second magnet portion does not link to each other mutually, and described magnetic circuit system also comprises ring-type the second pole piece that is sticked on described the second magnet portion.
3. mini-sound device according to claim 2, it is characterized in that: described mini-sound device also comprises the pad that is arranged on the ring-type on described the second pole piece, the ring section of described vibrating diaphragm is fixed on the described pad.
4. mini-sound device according to claim 3 is characterized in that: described ring section comprises that to away from the depressed part of described the second pole piece direction depression and the fixed part that is extended by described depressed part, described fixed part is fixed on the described pad.
5. mini-sound device according to claim 4, it is characterized in that: described the second pole piece and described pad are structure as a whole.
6. mini-sound device according to claim 2, it is characterized in that: described the second pole piece is higher than described the first magnet portion in the direction perpendicular to described lower plate, and the ring section of described vibrating diaphragm is fixed on described the second pole piece.
7. mini-sound device according to claim 6 is characterized in that: described ring section comprises that to away from the depressed part of described the second pole piece direction depression and the fixed part that is extended by described depressed part, described fixed part is fixed on described the second pole piece.
8. according to claim 5 or 7 described mini-sound devices, it is characterized in that: described the second magnet portion is provided with four.
9. mini-sound device according to claim 8, it is characterized in that: described magnetic circuit system also comprises the first pole piece that is sticked on described the first magnet portion, described ball top and described the first pole piece are separated by a distance.
10. mini-sound device according to claim 9 is characterized in that: described mini-sound device comprises that also lid is located at the protecgulum on the described vibrating diaphragm, and described protecgulum is provided with the vocal hole that runs through on it.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220429847 CN202818589U (en) | 2012-08-27 | 2012-08-27 | Micro sounding device |
| US14/010,620 US20140056446A1 (en) | 2012-08-27 | 2013-08-27 | Micro-Speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220429847 CN202818589U (en) | 2012-08-27 | 2012-08-27 | Micro sounding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202818589U true CN202818589U (en) | 2013-03-20 |
Family
ID=47877389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220429847 Expired - Fee Related CN202818589U (en) | 2012-08-27 | 2012-08-27 | Micro sounding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202818589U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106973350A (en) * | 2017-06-01 | 2017-07-21 | 江苏菲泽科技发展有限公司 | A kind of infrasound acoustical generator for driveing jellyfish |
| CN109889964A (en) * | 2018-12-30 | 2019-06-14 | 瑞声科技(新加坡)有限公司 | Microphone device |
| WO2020114085A1 (en) * | 2018-12-05 | 2020-06-11 | 瑞声声学科技(深圳)有限公司 | Sound generation device |
-
2012
- 2012-08-27 CN CN 201220429847 patent/CN202818589U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106973350A (en) * | 2017-06-01 | 2017-07-21 | 江苏菲泽科技发展有限公司 | A kind of infrasound acoustical generator for driveing jellyfish |
| WO2020114085A1 (en) * | 2018-12-05 | 2020-06-11 | 瑞声声学科技(深圳)有限公司 | Sound generation device |
| CN109889964A (en) * | 2018-12-30 | 2019-06-14 | 瑞声科技(新加坡)有限公司 | Microphone device |
| CN109889964B (en) * | 2018-12-30 | 2021-02-26 | 瑞声科技(新加坡)有限公司 | Sound production device |
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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: 20130320 Termination date: 20210827 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |