CN201995123U - Miniature moving coil type electroacoustic transducer and electronic device applying same - Google Patents
Miniature moving coil type electroacoustic transducer and electronic device applying same Download PDFInfo
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- CN201995123U CN201995123U CN2011200509920U CN201120050992U CN201995123U CN 201995123 U CN201995123 U CN 201995123U CN 2011200509920 U CN2011200509920 U CN 2011200509920U CN 201120050992 U CN201120050992 U CN 201120050992U CN 201995123 U CN201995123 U CN 201995123U
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- voice coil
- electroacoustic transducer
- type electroacoustic
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- coil type
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Abstract
The utility model discloses a miniature moving coil type electroacoustic transducer and an electronic device applying the same. A vibrating system of the miniature moving coil type electroacoustic transducer comprises a vibrating diaphragm and a flat-shaped driving device combined with the vibrating diaphragm, wherein the plane in which the vibrating diaphragm is arranged is vertical to the plane in which the driving device is arranged. An auxiliary system comprises a casing containing the vibrating system and a magnetic circuit system, wherein one side of the casing, which corresponds to the vibrating diaphragm, is provided with an opening, a side plate is covered and connected to the opening, and a sound hole is arranged on the side plate; and the electronic device is provided with a cavity body for installing the miniature moving coil type electroacoustic transducer, and the cavity body is provided with an opening which is directly communicated with the sound hole of the miniature moving coil type electroacoustic transducer on the side face of the electronic device. Because of adopting the technical scheme, the height of the electronic device is lowered according to the miniature moving coil type electroacoustic transducer and the electronic device applying the same, and the thinness of the electronic device is realized.
Description
Technical field
The utility model relates to the electroacoustic field, is specifically related to a kind of miniature moving-coil type electroacoustic transducer and uses the electronic installation of this miniature moving-coil type electroacoustic transducer.
Background technology
At present, compact electronic device develops to the direction of slimming, and can directly influence the thickness of electronic installation as the miniature moving-coil type electroacoustic transducer of important acoustical device.
Fig. 8 is the cross-sectional view of miniature moving-coil type electroacoustic transducer in the prior art, and miniature moving-coil type electroacoustic transducer comprises, vibrational system, magnetic circuit system and auxiliary system.Vibrational system comprises vibrating diaphragm 21 ' and voice coil loudspeaker voice coil 23 '.Magnetic circuit system comprises upper conduction magnetic board 32 ', magnet 31 ' and the following magnetic conductive board 33 ' that from top to bottom combines successively, magnetic circuit system forms the magnetic gap of accommodating described voice coil loudspeaker voice coil 23 ', in the course of work, thereby voice coil loudspeaker voice coil 23 ' up-down vibration in magnetic gap drives the vibration of vibrating diaphragm 21 '.Auxiliary system comprises that the shell 12 ' of accommodating vibrational system and magnetic circuit system and lid are connected to the protecgulum 11 ' on the shell 12 ', and the top of protecgulum 11 ' is provided with hole 111 '.
Miniature moving-coil type electroacoustic transducer with the assembling of electronic installation such as mobile phone the time, need with the cavity combination in these electronic installations, can prevent acoustic short circuit and improve tonequality.Electronic installation phonate hole positions such as mobile phone be provided with two kinds: front and side, the sound pore volume easily stops up when keeping flat for the electronic installation of positive perforate, therefore, usually phonate hole is arranged on the side of electronic installation in the prior art.With the mobile phone is example, and shown in Fig. 9 and Figure 10 were common, loudspeaker module 1 was located at the position at mobile phone edge, and the side of mobile phone is located in the sound hole, and wherein loudspeaker module 1 comprises the cavity 4 ' in miniature moving-coil type electroacoustic transducer and the mobile phone.Cavity 4 ' is miniature moving-coil type electroacoustic transducer and form the back cavity 41 ' of sealing fixedly.Because the upper surface at miniature moving-coil type electroacoustic transducer is opened in sound hole 111 ', speak in order to realize the side, need in the vertical direction to provide to have the ante-chamber 42 ' that can connect sound hole 111 ' of certain space, and sound is sent from the side at the lateral opening of ante-chamber 42 '.Adopt the electronic installation of this structure moving-coil type electro-acoustic conversing device, the thickness of miniature moving-coil type electroacoustic transducer, also have the wall thickness of three layers of cavity and the height of chamber, front and back in the vertical direction, all influenced the thickness of electronic installation, the moving-coil type electro-acoustic conversing device of this structure and electronic installation are unfavorable for the realization of electronic installation slimming.
In order to take into account the slimming of product, the Oscillation Amplitude in the vertical direction of voice coil loudspeaker voice coil is restricted, and is unfavorable for the raising of electronic installation power output.Therefore, be necessary the miniature moving-coil type electroacoustic transducer and the electronic installation thereof of said structure are improved, to avoid above-mentioned defective.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of miniature moving-coil type electroacoustic transducer is provided and uses the electronic installation of this electroacoustic transducer, can reduce the behave affectedly integral thickness of back electronic installation of miniature moving-coil type electroacoustic transducer, improve the power output of electronic installation.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of miniature moving-coil type electroacoustic transducer comprises:
Vibrational system, described vibrational system comprise vibrating diaphragm and the drive unit that combines with described vibrating diaphragm;
Magnetic circuit system, described magnetic circuit system comprises magnet;
Auxiliary system, described auxiliary system comprises the shell that holds described vibrational system and described magnetic circuit system;
Described drive unit comprise flat voice coil loudspeaker voice coil, the plane at described voice coil loudspeaker voice coil place is vertical with the plane at described vibrating diaphragm place;
The magnet of described magnetic circuit system places the plane parallel at described voice coil loudspeaker voice coil side and bearing of trend and described voice coil loudspeaker voice coil place, and the plane at the magnetic polarization direction of described magnet and described voice coil loudspeaker voice coil place is perpendicular or parallel;
The corresponding side of described shell and described vibrating diaphragm is provided with opening, is connected to side plate at described opening loam cake, is provided with hole on described side plate.
As a kind of improvement, described magnetic circuit system also comprises magnetic conductive board, and described magnetic conductive board is installed on the side of described magnet away from described voice coil loudspeaker voice coil, and described magnetic conductive board combines with described side wall of outer shell.
As a kind of improvement, described magnet comprises one group or two groups, and every group of magnet is provided with two and is symmetrically set in described voice coil loudspeaker voice coil both sides and opposite polarity magnet.
As a kind of improvement, be provided with the rigidity composite bed in the center of described vibrating diaphragm.
As a kind of improvement, between described drive unit and described shell, be provided with centring disk, an end of described centring disk combines with shell, and the other end combines with the end of drive unit away from vibrating diaphragm.
As a kind of improvement, described shell comprises first shell and second shell that is bonded together.
As a kind of improvement, be respectively equipped with the through hole that is embedded described magnetic circuit system on described first shell and described second shell.
The electronic installation of miniature moving-coil type electroacoustic transducer is installed, offers cavity in the side of described electronic installation, the bearing of trend of described cavity is parallel with the positive direction of extension of electronic installation; Described miniature moving-coil type electroacoustic transducer is installed in the described cavity, the sound hole of described miniature moving-coil type electroacoustic transducer towards the opening of described cavity and and described opening between form ante-chamber, form back cavity between the bottom of described miniature moving-coil type electroacoustic transducer and described cavity.
Owing to adopted technique scheme, the utility model is by being modified into flat with voice coil loudspeaker voice coil, be connected to side plate at outer casing upper cover, hole is opened on side plate of the present utility model, thereby reduced the height of the cavity of assembling miniature moving-coil type electroacoustic transducer in the electronic installation, the slimming of electronic installation after can realizing behaveing affectedly; Along the direction of vibration of voice coil loudspeaker voice coil, electronic installation is less to the size restrictions of miniature moving-coil type electroacoustic transducer, makes described voice coil loudspeaker voice coil can obtain bigger oscillation space, increases amplitude, thereby has increased the power output of electronic installation.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the explosive view of miniature moving-coil type electroacoustic transducer among the utility model embodiment one;
Fig. 2 is the reference diagram after the assembling of the utility model embodiment one miniature moving-coil type electroacoustic transducer;
Fig. 3 is the cross-sectional view of Fig. 2;
Fig. 4 is the scheme of installation of drive unit and centring disk among Fig. 3;
Fig. 5 is the scheme of installation of first shell, magnetic conductive board, magnet, drive unit and centring disk among Fig. 3;
Fig. 6 is the structural representation of electronic installation among the utility model embodiment one;
Fig. 7 is the structural representation of the utility model embodiment two;
Fig. 8 is the cross-sectional view of prior art miniature moving-coil type electroacoustic transducer;
Fig. 9 is the structural representation that the electronic installation of miniature moving-coil type electroacoustic transducer is installed in the prior art;
Figure 10 is an A-A profile among Fig. 9.
Among the figure: the 11-side plate; 111-sound hole; The 12-shell; 12a-first shell; 12b-second shell; The 121-through hole; The 21-vibrating diaphragm; The 22-composite bed; The 23-voice coil loudspeaker voice coil; The 24-skeleton; The 25-centring disk; The 251-conductive connection part; 31-magnet; The 32-magnetic conductive board; The 32a-magnetic conductive board; The 4-cavity; The 41-back cavity; The 42-ante-chamber; The 50-miniature moving-coil type electroacoustic transducer; The 1-electronic installation; 11 '-protecgulum; 111 '-sound hole; 12 '-shell; 21 '-vibrating diaphragm; 23 '-voice coil loudspeaker voice coil; 31 '-magnet; 32 '-upper conduction magnetic board; 33 '-following magnetic conductive board; The miniature moving-coil type electroacoustic transducer of 1 '-prior art; 111 '-sound hole; 4 '-cavity; 41 '-back cavity; 42 '-ante-chamber.
Embodiment
In the following description, only the mode by explanation is described some one exemplary embodiment of the present utility model, undoubtedly, those of ordinary skill in the art can recognize, under the situation that does not depart from spirit and scope of the present utility model, can revise described embodiment with various mode.Therefore, accompanying drawing and be described in just illustratively in essence rather than is used to limit the protection range of claim.In addition, in this manual, identical Reference numeral indicates identical part.
Embodiment one
Shown in Fig. 1 to Fig. 5 is common, a kind of miniature moving-coil type electroacoustic transducer, its involving vibrations system, magnetic circuit system and auxiliary system.
Vibrational system comprises vibrating diaphragm 21 and the drive unit that combines with vibrating diaphragm 21, be provided with rigidity composite bed 22 in the center of vibrating diaphragm 21, drive unit comprise flat voice coil loudspeaker voice coil 23, the plane at voice coil loudspeaker voice coil 23 places is vertical with the plane at vibrating diaphragm 21 places, voice coil loudspeaker voice coil 23 is a flat, is fixed on the speech coil framework 24 by modes such as bondings.Speech coil framework 24 is plane structure, with voice coil loudspeaker voice coil 23 at grade, and be incorporated into a side of vibrating diaphragm 21 by modes such as bondings.
Magnetic circuit system comprises magnet 31 and magnetic conductive board 32.Magnet 31 is two groups in this implementation process, every group of magnet is provided with two and is symmetrically set in described voice coil loudspeaker voice coil both sides and opposite polarity magnet, four equal levels of magnet place voice coil loudspeaker voice coil 23 both sides and with voice coil loudspeaker voice coil 23 place plane parallel, two blocks of magnet of homonymy are fixed on the magnetic conductive board side by side, and the magnetic polarization direction of magnet 31 is vertical with the plane at voice coil loudspeaker voice coil 23 places in this implementation process.Form the magnetic gap of ccontaining voice coil loudspeaker voice coil 23 in the middle of two groups of magnet, the direction of the magnetic line of force as shown in the figure, when feeding AC signal in the voice coil loudspeaker voice coil 23, voice coil loudspeaker voice coil 23 forced vibration in magnetic field, and drive vibrating diaphragms 21 vibrations by speech coil framework 24.
Auxiliary system comprises the shell 12 that holds vibrational system and magnetic circuit system, and shell 12 is provided with opening with vibrating diaphragm 21 corresponding sides, and the opening loam cake is connected to side plate 11, is provided with hole 111 on side plate 11.For the ease of installing, shell 12 is modified into the first shell 12a and the second shell 12b that can combine.Be respectively equipped with the through hole 121 that is embedded described magnetic circuit system on the first shell 12a and the second shell 12b.Magnetic conductive board 32 is located at the side of magnet 31 away from described voice coil loudspeaker voice coil 23, and is embedded in the through hole 121 that the first shell 12a and the second shell 12b sidewall be provided with and fixing bonding.
In order to prevent in voice coil loudspeaker voice coil 23 vibration processes polarization to take place, centring disk 25 is installed between drive unit and shell, wherein the first shell 12a is provided with the part with centring disk 25 secure bond, and an end of centring disk 25 is installed on the skeleton 24, and the other end is installed on the first shell 12a.Centring disk 25 has two, and two centring disk symmetries are installed on two bights of speech coil framework 24, and the gap is left in the centre, and when preventing the voice coil loudspeaker voice coil vibration, during centring disk resonance, two centring disks bump.Centring disk 25 is a metal material, can play simultaneously the effect of electrical connection, the part that centring disk 25 combines with speech coil framework 24 is provided with conductive connection part 251, and voice coil leads and conductive connection part 251 welding can prevent that voice coil leads breaks in the vibration processes.
In the assembling process, at first, the assembly after voice coil loudspeaker voice coil 23, speech coil framework 24 and centring disk 25 assemblings is combined with the first shell 12a, centring disk 25 is combined with appropriate section on the first shell 12a; Then, with the first shell 12a and the second shell 12b secure bond; Then, together with the combination of vibrating diaphragm 21 and composite bed 22 and side plate 11 and shell 12 secure bond; At last, after magnet 31 and magnetic conductive board 32 secure bond, the magnetic circuit system buckle that assembles is gone in the through hole 121 that shell is provided with, and with glue that magnetic circuit system and shell 12 bondings is fixing.
As shown in Figure 6, the electronic installation 1 of miniature moving-coil type electroacoustic transducer is installed, offers cavity 4 in the side of described electronic installation 1, the bearing of trend of described cavity 4 is parallel with electronic installation 1 positive direction of extension.Described miniature moving-coil type electroacoustic transducer 50 is installed in the described cavity 4, the sound hole 111 of described miniature moving-coil type electroacoustic transducer 50 towards the opening of described cavity and and described opening between form ante-chamber 41, formation back cavity 41 between the bottom of described miniature moving-coil type electroacoustic transducer 50 and described cavity 4.
In this structure, cavity 4 and miniature moving-coil type electroacoustic transducer 50 with the positive vertical direction of electronic installation on, except that the thickness of miniature moving-coil type electroacoustic transducer self, have only the wall thickness of two-layer cavity, thereby realized the slimming of product; The sound hole 111 of miniature moving-coil type electroacoustic transducer 50 directly communicates with the opening of cavity 4, has reduced the height of cavity 4, and has been beneficial to the transmission of sound; Along the direction of voice coil loudspeaker voice coil vibration, electronic installation is lower to the requirement of the size of miniature moving-coil type electroacoustic transducer, makes voice coil loudspeaker voice coil can obtain bigger oscillation space, and amplitude increases, thereby can increase the power output of product.
Embodiment two
As shown in Figure 7, embodiment two is that with embodiment one main distinction miniature moving-coil type electroacoustic transducer comprises one group of magnet in the present embodiment, and this group magnet is provided with two and is symmetrically set in voice coil loudspeaker voice coil both sides and opposite polarity magnet.The Lower Half of magnetic conductive board 32a is provided with the kink near voice coil loudspeaker voice coil 23 1 sides.The direction of magnet 31 magnetic polarization is vertical with the plane at voice coil loudspeaker voice coil 23 places, magnetic field is produced by magnet 31 and the kink by magnetic conductive board 32a downside conducts the magnetic loop that forms closure in the present embodiment, when being connected with AC signal in the voice coil loudspeaker voice coil 23, voice coil loudspeaker voice coil 23 vibrates in the magnetic gap that magnetic circuit system forms, thereby drives the vibration of vibrating diaphragm 21 and sounding.
In above-mentioned implementation process, the magnetic polarization direction of magnet also can with the plane parallel setting at voice coil loudspeaker voice coil place; When magnetic circuit system is provided with one group of magnet, also can on the diagonal angle of magnetic circuit system, be provided with.More than the neither enforcement that influences the invention.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (8)
1. miniature moving-coil type electroacoustic transducer comprises:
Vibrational system, described vibrational system comprise vibrating diaphragm and the drive unit that combines with described vibrating diaphragm;
Magnetic circuit system, described magnetic circuit system comprises magnet;
Auxiliary system, described auxiliary system comprises the shell that holds described vibrational system and described magnetic circuit system;
It is characterized in that, described drive unit comprise flat voice coil loudspeaker voice coil, the plane at described voice coil loudspeaker voice coil place is vertical with the plane at described vibrating diaphragm place;
The magnet of described magnetic circuit system places the plane parallel at described voice coil loudspeaker voice coil side and bearing of trend and described voice coil loudspeaker voice coil place, and the plane at the magnetic polarization direction of described magnet and described voice coil loudspeaker voice coil place is perpendicular or parallel;
The corresponding side of described shell and described vibrating diaphragm is provided with opening, is connected to side plate at described opening loam cake, is provided with hole on described side plate.
2. miniature moving-coil type electroacoustic transducer as claimed in claim 1 is characterized in that described magnetic circuit system also comprises magnetic conductive board, and described magnetic conductive board is installed on the side of described magnet away from described voice coil loudspeaker voice coil, and described magnetic conductive board combines with described side wall of outer shell.
3. miniature moving-coil type electroacoustic transducer as claimed in claim 2 is characterized in that, described magnet comprises one group or two groups, and every group of magnet is provided with two and is symmetrically set in described voice coil loudspeaker voice coil both sides and opposite polarity magnet.
4. miniature moving-coil type electroacoustic transducer as claimed in claim 1 is characterized in that, is provided with the rigidity composite bed in the center of described vibrating diaphragm.
5. miniature moving-coil type electroacoustic transducer as claimed in claim 1 is characterized in that, is provided with centring disk between described drive unit and described shell, and an end of described centring disk combines with shell, and the other end combines with the end of drive unit away from vibrating diaphragm.
6. miniature moving-coil type electroacoustic transducer as claimed in claim 1 is characterized in that, described shell comprises first shell and second shell that is bonded together.
7. miniature moving-coil type electroacoustic transducer as claimed in claim 6 is characterized in that, is respectively equipped with the through hole that is embedded described magnetic circuit system on described first shell and described second shell.
8. the electronic installation of the described miniature moving-coil type electroacoustic transducer of the arbitrary claim of claim 1 to 7 is installed, it is characterized in that, offer cavity in the side of described electronic installation, the bearing of trend of described cavity is parallel with the positive direction of extension of electronic installation;
Described miniature moving-coil type electroacoustic transducer is installed in the described cavity, the sound hole of described miniature moving-coil type electroacoustic transducer towards the opening of described cavity and and described opening between form ante-chamber, form back cavity between the bottom of described miniature moving-coil type electroacoustic transducer and described cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200509920U CN201995123U (en) | 2011-02-26 | 2011-02-26 | Miniature moving coil type electroacoustic transducer and electronic device applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200509920U CN201995123U (en) | 2011-02-26 | 2011-02-26 | Miniature moving coil type electroacoustic transducer and electronic device applying same |
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| Publication Number | Publication Date |
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| CN201995123U true CN201995123U (en) | 2011-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200509920U Expired - Lifetime CN201995123U (en) | 2011-02-26 | 2011-02-26 | Miniature moving coil type electroacoustic transducer and electronic device applying same |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103118320A (en) * | 2013-01-18 | 2013-05-22 | 歌尔声学股份有限公司 | Ultrathin loudspeaker module |
| CN106231507A (en) * | 2016-08-26 | 2016-12-14 | 广东欧珀移动通信有限公司 | A kind of vibrating diaphragm, speaker, sound chamber assembly and terminal |
| CN110383858A (en) * | 2017-03-07 | 2019-10-25 | 哈曼国际工业有限公司 | Loudspeaker |
| WO2019205708A1 (en) * | 2018-04-24 | 2019-10-31 | 歌尔股份有限公司 | Sound emission device and electronic apparatus |
| CN111819866A (en) * | 2018-03-07 | 2020-10-23 | 哈曼国际工业有限公司 | Loudspeaker |
-
2011
- 2011-02-26 CN CN2011200509920U patent/CN201995123U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103118320A (en) * | 2013-01-18 | 2013-05-22 | 歌尔声学股份有限公司 | Ultrathin loudspeaker module |
| CN103118320B (en) * | 2013-01-18 | 2015-11-11 | 歌尔声学股份有限公司 | A kind of ultrathin loudspeaker module |
| CN106231507A (en) * | 2016-08-26 | 2016-12-14 | 广东欧珀移动通信有限公司 | A kind of vibrating diaphragm, speaker, sound chamber assembly and terminal |
| CN110383858A (en) * | 2017-03-07 | 2019-10-25 | 哈曼国际工业有限公司 | Loudspeaker |
| US11218811B2 (en) | 2017-03-07 | 2022-01-04 | Harman International Industries, Incorporated | Loudspeaker |
| CN110383858B (en) * | 2017-03-07 | 2022-07-05 | 哈曼国际工业有限公司 | Loudspeaker |
| CN111819866A (en) * | 2018-03-07 | 2020-10-23 | 哈曼国际工业有限公司 | Loudspeaker |
| US11450302B2 (en) | 2018-03-07 | 2022-09-20 | Harman International Industries, Incorporated | Loudspeaker with magnets in ferrofluid |
| CN111819866B (en) * | 2018-03-07 | 2023-02-03 | 哈曼国际工业有限公司 | Loudspeaker |
| WO2019205708A1 (en) * | 2018-04-24 | 2019-10-31 | 歌尔股份有限公司 | Sound emission device and electronic apparatus |
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| Date | Code | Title | Description |
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| 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. |
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| CX01 | Expiry of patent term |
Granted publication date: 20110928 |
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| CX01 | Expiry of patent term |