CN203301736U - A micro loudspeaker - Google Patents
A micro loudspeaker Download PDFInfo
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- CN203301736U CN203301736U CN2013203428479U CN201320342847U CN203301736U CN 203301736 U CN203301736 U CN 203301736U CN 2013203428479 U CN2013203428479 U CN 2013203428479U CN 201320342847 U CN201320342847 U CN 201320342847U CN 203301736 U CN203301736 U CN 203301736U
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- voice coil
- magnetic circuit
- conducting strip
- microspeaker
- dome
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Abstract
The utility model discloses a micro loudspeaker and relates to the technical field of electroacoustic products. The micro loudspeaker comprises a housing and a front cover which are combined together. A space surrounded by the housing and the front cover contains a vibration system and a magnetic circuit system between which a vibration space is arranged. The vibration system comprises a vibration system, a DOME, and a voice coil which are combined successively. A conductive slice is disposed between the DOME and the voice coil. The micro loudspeaker resolves a technical problem of poor acoustic performance of a micro loudspeaker in the prior art. With the voice coil with minimum wire diameter and minimum mass, the micro loudspeaker achieves relatively high acoustic performance and reliability and a long service life, and satisfies a requirement of people for the acoustic performance of thin loudspeakers.
Description
Technical field
The utility model relates to the electro-acoustic product technical field, particularly a kind of Microspeaker.
Background technology
Develop rapidly along with electronic industry, portable electric appts is to lightening direction development, this has to lightening development with regard to making as the loud speaker of portable electric appts, as everyone knows, loud speaker is thinner, its acoustical behavior is poorer, and this just need to make improvement to the structure of existing loud speaker, to guarantee loud speaker, still can guarantee acoustical behavior preferably lightening after thin.
Present Microspeaker for portable electric appts, comprise the shell and the protecgulum that are combined as a whole, in the space that shell and protecgulum surround, contain vibrational system and magnetic circuit system, vibrational system comprises that vibrating diaphragm, the DOME(of combination successively are positioned at the ball top at vibrating diaphragm middle part) and voice coil loudspeaker voice coil, voice coil leads is connected with external circuit by the electrical connector on shell.There is following some deficiency in the loud speaker of this traditional structure:
One, in order to guarantee the acoustical behavior of loud speaker, when meeting the loudspeaker vibration space requirement, voice coil loudspeaker voice coil will be present between magnetic gap to greatest extent, therefore voice coil loudspeaker voice coil will have enough length, the voice coil loudspeaker voice coil quality also will strengthen thereupon, can not guarantee that loud speaker obtains good acoustical behavior, also is unfavorable for the development trend that loud speaker is lightening;
Two, when the electric current that passes through in voice coil loudspeaker voice coil increased suddenly overload, the amplitude of vibrational system can increase thereupon, and the increase of amplitude can cause the oscillation space deficiency, thereby can produce noise, affects the acoustical behavior of loud speaker; Also easily make vibrational system come off from shell, shortened the useful life of loud speaker;
Three, voice coil leads intensity is low, poor reliability, and easy fracture in vibration processes, shortened useful life of loud speaker.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of Microspeaker, and this Microspeaker obtains optimum BL(magnetic flux under the prerequisite of voice coil loudspeaker voice coil wire diameter and quality minimum) value, have higher acoustical behavior.
Further, technical problem to be solved in the utility model is to provide a kind of Microspeaker, and this Microspeaker obtains optimum BL value under the prerequisite of voice coil loudspeaker voice coil wire diameter and quality minimum, have higher acoustical behavior; And the ball of this Microspeaker withstands on when loud speaker transships suddenly can play vibrating diaphragm position-limiting action, long service life.
Further, technical problem to be solved in the utility model is to provide a kind of Microspeaker, and this Microspeaker obtains optimum BL value under the prerequisite of voice coil loudspeaker voice coil wire diameter and quality minimum, have higher acoustical behavior; And the ball of this Microspeaker withstands on when loud speaker transships suddenly can play the vibrating diaphragm position-limiting action; And reliability is high, and vibrating effect is good, has acoustical behavior preferably, and long service life.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of Microspeaker, comprise the shell and the protecgulum that combine, in the space that described shell and protecgulum surround, contain vibrational system and magnetic circuit system, between described vibrational system and described magnetic circuit system, leave oscillation space, described vibrational system comprises vibrating diaphragm, DOME and the voice coil loudspeaker voice coil of combination successively, between described DOME and described voice coil loudspeaker voice coil, is provided with conducting strip.
Wherein, described conducting strip is provided be used to welding the pad of voice coil leads, on described pad, also is welded be used to connecting the lead-in wire extended line of voice coil loudspeaker voice coil and loud speaker external circuit, and the intensity of described lead-in wire extended line is higher than the intensity of described voice coil leads.
Wherein, described conducting strip is loop configuration.
Wherein, the middle part of described DOME is provided with the ball top of extending to described oscillation space.
Wherein, described Microspeaker is square structure; Described magnetic circuit system comprises internal magnetic circuit and is surrounded on the external magnetic circuit of described internal magnetic circuit periphery, between described internal magnetic circuit and described external magnetic circuit, is provided with magnetic gap; Described internal magnetic circuit comprises interior washer and the internal magnet that overlaps successively, and described external magnetic circuit comprises outer washer and the external magnet that overlaps successively.
Wherein, described conducting strip is square structure, and four bights of described conducting strip are equipped with the pad area that extends to described conducting strip both sides respectively, and described pad is positioned on described pad area.
Wherein, two described pads that are positioned at the same side of described conducting strip connect by the conduction region on conducting strip, and described voice coil leads is welded on separately respectively on two described pads that are connected with described lead-in wire extended line.
Wherein, four bights of described outer washer inboard are equipped be used to dodging the groove of dodging of described pad area on described conducting strip.
Wherein, the material of described lead-in wire extended line is enamelled wire, twisted wire or bright and beautiful silk thread.
After having adopted technique scheme, the beneficial effects of the utility model are:
Due to the vibrational system of the utility model Microspeaker, comprise vibrating diaphragm, DOME and the voice coil loudspeaker voice coil of combination successively, between DOME and voice coil loudspeaker voice coil, be provided with conducting strip.The setting of conducting strip can make voice coil loudspeaker voice coil be positioned to greatest extent magnetic gap centre position (as shown in Figure 2), can increase the magnetic flux of loud speaker, under the prerequisite of voice coil loudspeaker voice coil wire diameter and quality minimum, obtain optimum BL value, made Microspeaker when having met lightening demand for development, have higher acoustical behavior.
Because conducting strip is provided be used to welding the pad of voice coil leads, on pad, also be welded be used to connecting the lead-in wire extended line of voice coil loudspeaker voice coil and loud speaker external circuit, the intensity of lead-in wire extended line is higher than the intensity of voice coil leads.Adopt the lead-in wire extended line that intensity is high to replace voice coil leads to be connected with external circuit, not only solved the problem of voice coil leads easy fracture in vibration processes, improved the reliability of loud speaker, extended the useful life of loud speaker; Also make loud speaker obtain optimum Cms, thereby obtain higher acoustical behavior.
Due to the middle part of DOME, be provided with the ball top of extending to oscillation space.Setting to the ball top that oscillation space extends can be played spacing effect when overload occurs loud speaker, the amplitude that prevents vibrational system is excessive, as can be seen from Figure 2, when the vibrational system amplitude is excessive, the washer of magnetic circuit system can first be encountered in the ball top before voice coil loudspeaker voice coil collides the bottom of magnetic circuit system, thereby had played spacing effect, had prevented that effectively voice coil loudspeaker voice coil and magnetic circuit system from colliding, improve the acoustical behavior of loud speaker, and extended the useful life of loud speaker.
Due to four bights of conducting strip, be equipped with the pad area that extends to both sides respectively, pad area can bump with the outer washer of magnetic circuit system when vibration, cause loud speaker to produce noise, affect acoustical behavior, therefore four of the washer inboard bights are provided with and dodge groove outside, dodge groove and solved the collision problem of conducting strip and outer washer, promoted the acoustical behavior of loud speaker.
In sum, the utility model Microspeaker has solved the poor technical problem of Microspeaker acoustical behavior in the prior art.The utility model Microspeaker is in the situation that voice coil loudspeaker voice coil wire diameter and quality minimum have obtained higher acoustical behavior and reliability, and long service life, met the requirement of people to the acoustical behavior of Slimline speaker.
The accompanying drawing explanation
Fig. 1 is the stereo decomposing structural representation of the utility model Microspeaker;
Fig. 2 is the cross-sectional view of the utility model Microspeaker;
Fig. 3 be the DOME, conducting strip of the utility model Microspeaker and voice coil loudspeaker voice coil in conjunction with after structural representation;
Fig. 4 is the structural representation of the conducting strip of the utility model Microspeaker;
In figure: 10, shell, 12, protecgulum, 20, vibrating diaphragm, 22, DOME, 24, conducting strip, 240, the lead-in wire extended line, 242, pad, 244, conduction region, 26, voice coil loudspeaker voice coil, 260, voice coil leads, 30, interior washer, 32, outer washer, 320, dodge groove, 34, internal magnet, 36, external magnet, 38, magnetic conductive board, 40, electrical connector.
Embodiment
Below in conjunction with drawings and Examples, further set forth the utility model.
As shown in Fig. 1 and Fig. 2 are common, a kind of Microspeaker, be rectangle structure, comprises the shell 10 and the protecgulum 12 that combine, in the space that shell 10 and protecgulum 12 surround, contain vibrational system and magnetic circuit system, between vibrational system and magnetic circuit system, leave oscillation space.Vibrational system comprises from top to bottom vibrating diaphragm 20, DOME22, conducting strip 24 and the voice coil loudspeaker voice coil 26 of combination successively.Magnetic circuit system comprises internal magnetic circuit and the external magnetic circuit that is surrounded on the internal magnetic circuit periphery, between internal magnetic circuit and external magnetic circuit, is provided with magnetic gap, and the part of voice coil loudspeaker voice coil 26 is positioned at magnetic gap; Internal magnetic circuit comprises interior washer 30 and the internal magnet 34 that overlaps successively from top to bottom, external magnetic circuit comprises outer washer 32 and the external magnet 36 that overlaps successively from top to bottom, internal magnetic circuit and external magnetic circuit all are fixedly installed on magnetic conductive board 38, and magnetic conductive board 38 secure bond are in the bottom of shell 10.On shell 10, be equipped be used to connecting the electrical connector 40 of voice coil loudspeaker voice coil 26 and external circuit.The setting of conducting strip 24 can make voice coil loudspeaker voice coil 26 be positioned to greatest extent magnetic gap, under the prerequisite of voice coil loudspeaker voice coil wire diameter and quality minimum, has obtained optimum BL value, makes Microspeaker in the requirement that has met lightening development, have higher acoustical behavior.
As shown in Figure 4, conducting strip 24 is loop configuration, and the loop configuration of conducting strip 24 can alleviate the quality of vibrational system, and then has alleviated the quality of loud speaker.Four bights of conducting strip 24 are equipped with the pad area that extends to conducting strip 24 both sides respectively, and pad area is provided with pad 242, and two pads 242 that are positioned at conducting strip 24 same long sides connect by the conduction region 244 on conducting strip 24.
As shown in Figure 3, voice coil leads 260 is welded on the pad corresponding with its position 242, on another pad 242 that is electrically connected with the pad 242 that is welded with voice coil leads 260, is welded with lead-in wire extended line 240, and lead-in wire extended line 240 connects electrical connectors 40.Lead-in wire extended line 240 adopts than high enamelled wire, twisted wire or the bright and beautiful silk thread of voice coil loudspeaker voice coil coiling intensity and makes.Adopt the lead-in wire extended line 240 that intensity is high to replace voice coil leads 260 to be connected with electrical connector 40, solved the problem of voice coil leads easy fracture in vibration processes, improved the reliability of loud speaker, extended the useful life of loud speaker; Also make simultaneously loud speaker obtain optimum Cms, thereby obtain higher acoustical behavior.
As shown in Figure 2, the middle part of DOME22 is provided with the ball top of extending to oscillation space, and namely cave in to the magnetic circuit system direction in the middle part of DOME22.Setting to the ball top that oscillation space extends can be played spacing effect when overload occurs loud speaker, prevent that the amplitude of vibrational system is excessive.
As shown in Figure 1, four bights of outer washer 32 inboards are equipped with dodges groove 320 be used to what dodge pad area on conducting strip 24, and position and the shape size of dodging groove 320 are all consistent with the pad area on conducting strip 24.Dodge groove 320 and can avoid pad area and outer washer 32 on conducting strip 24 to collide, solved the problem that produces noise because of collision, promoted the acoustical behavior of loud speaker.
The present embodiment has only been done detailed explanation as an example of the rectangle loud speaker example, whole technical schemes described in the utility model also are applicable to foursquare loud speaker, are not described in detail in this.
Separately: the conducting strip of setting up between DOME and voice coil loudspeaker voice coil in the utility model makes the voice coil loudspeaker voice coil position be positioned to greatest extent magnetic gap; And the middle part of DOME when being provided with the ball that extends to oscillation space and pushing up to prevent the loud speaker overload voice coil loudspeaker voice coil and magnetic conductive board bump; And the high-intensity lead-in wire extended line of employing also replaces voice coil leads to improve the loud speaker reliability and these three technical schemes of acoustical behavior are equally applicable to circular loud speaker, introduction to the rectangle loud speaker can just can be applied to this technical scheme on circular loud speaker, therefore no longer describe in detail for circular loudspeakers at this without performing creative labour those skilled in the art according to this specification.
The utility model is not limited to above-mentioned concrete execution mode, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion of having done, within all dropping on protection range of the present utility model.
Claims (9)
1. Microspeaker, comprise the shell and the protecgulum that combine, in the space that described shell and protecgulum surround, contain vibrational system and magnetic circuit system, between described vibrational system and described magnetic circuit system, leave oscillation space, described vibrational system comprises vibrating diaphragm, DOME and the voice coil loudspeaker voice coil of combination successively, it is characterized in that, between described DOME and described voice coil loudspeaker voice coil, be provided with conducting strip.
2. Microspeaker according to claim 1, it is characterized in that, described conducting strip is provided be used to welding the pad of voice coil leads, on described pad, also be welded be used to connecting the lead-in wire extended line of voice coil loudspeaker voice coil and loud speaker external circuit, the intensity of described lead-in wire extended line is higher than the intensity of described voice coil leads.
3. Microspeaker according to claim 2, is characterized in that, described conducting strip is loop configuration.
4. Microspeaker according to claim 3, is characterized in that, the middle part of described DOME is provided with the ball top of extending to described oscillation space.
5. the described Microspeaker of according to claim 1 to 4 any one claim, is characterized in that, described Microspeaker is square structure; Described magnetic circuit system comprises internal magnetic circuit and is surrounded on the external magnetic circuit of described internal magnetic circuit periphery, between described internal magnetic circuit and described external magnetic circuit, is provided with magnetic gap; Described internal magnetic circuit comprises interior washer and the internal magnet that overlaps successively, and described external magnetic circuit comprises outer washer and the external magnet that overlaps successively.
6. Microspeaker according to claim 5, is characterized in that, described conducting strip is square structure, and four bights of described conducting strip are equipped with the pad area that extends to described conducting strip both sides respectively, and described pad is positioned on described pad area.
7. Microspeaker according to claim 6, it is characterized in that, two described pads that are positioned at the same side of described conducting strip connect by the conduction region on conducting strip, and described voice coil leads is welded on separately respectively on two described pads that are connected with described lead-in wire extended line.
8. Microspeaker according to claim 7, is characterized in that, four bights of described outer washer inboard are equipped be used to dodging the groove of dodging of described pad area on described conducting strip.
9. Microspeaker according to claim 2, is characterized in that, the material of described lead-in wire extended line is enamelled wire, twisted wire or bright and beautiful silk thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203428479U CN203301736U (en) | 2013-06-14 | 2013-06-14 | A micro loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203428479U CN203301736U (en) | 2013-06-14 | 2013-06-14 | A micro loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203301736U true CN203301736U (en) | 2013-11-20 |
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ID=49577712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203428479U Expired - Lifetime CN203301736U (en) | 2013-06-14 | 2013-06-14 | A micro loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203301736U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104980841A (en) * | 2015-08-24 | 2015-10-14 | 苏州硅果电子有限公司 | Sounder-overload-preventing structure |
| CN107172543A (en) * | 2017-04-28 | 2017-09-15 | 北京欧意智能科技有限公司 | Planar diaphragm speaker and earphone |
| WO2020029644A1 (en) * | 2018-08-05 | 2020-02-13 | 瑞声声学科技(深圳)有限公司 | Speaker |
| CN111225322A (en) * | 2019-11-25 | 2020-06-02 | 歌尔股份有限公司 | Speaker and electronic apparatus |
-
2013
- 2013-06-14 CN CN2013203428479U patent/CN203301736U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104980841A (en) * | 2015-08-24 | 2015-10-14 | 苏州硅果电子有限公司 | Sounder-overload-preventing structure |
| CN107172543A (en) * | 2017-04-28 | 2017-09-15 | 北京欧意智能科技有限公司 | Planar diaphragm speaker and earphone |
| WO2020029644A1 (en) * | 2018-08-05 | 2020-02-13 | 瑞声声学科技(深圳)有限公司 | Speaker |
| CN111225322A (en) * | 2019-11-25 | 2020-06-02 | 歌尔股份有限公司 | Speaker and electronic apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee after: GOERTEK Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131120 |