CN201869358U - Moving-coil electroacoustic transducer - Google Patents
Moving-coil electroacoustic transducer Download PDFInfo
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- CN201869358U CN201869358U CN2010205951443U CN201020595144U CN201869358U CN 201869358 U CN201869358 U CN 201869358U CN 2010205951443 U CN2010205951443 U CN 2010205951443U CN 201020595144 U CN201020595144 U CN 201020595144U CN 201869358 U CN201869358 U CN 201869358U
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- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000010287 polarization Effects 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 6
- 230000005489 elastic deformation Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model discloses a moving-coil electroacoustic transducer, which comprises a vibration system, a magnetic circuit system and a shell for fixing the vibration system and the magnetic circuit system, wherein the magnetic circuit system comprises magnets, and a narrow-long magnet gap is formed in the middle of the magnetic circuit system; the vibration system comprises a vibration plate and a driving device; the driving device adopting a flat structure is placed in the magnetic gap formed by the magnetic circuit system, and is arranged along the extension direction of the magnetic gap; at least one group of centering support pieces is arranged on the driving device, and the group of centering support pieces has two centering support pieces respectively arranged at the end parts on the two sides of the driving device; one end of each centering support piece is fixed at one end part of the driving device and the other end is fixed on the shell; and each centering support piece is provided with an elastic deformation part. By adopting the device, the driving device can be prevented from polarization, the acoustical behavior of the moving-coil electroacoustic transducer is improved, and the technology is simpler and more convenient.
Description
Technical field
The utility model relates to the electroacoustic transducer technical field.
Background technology
Along with the development of various electronic products, a large amount of electro-acoustic transducer device particularly moving-coil type electro-acoustic conversing device has obtained using widely.At present, be applied in the moving-coil type electro-acoustic conversing device of electronic installations such as LCD TV, known, for the occupied space of the size that reduces electroacoustic transducer and promote operating power, generally it is designed to strip, the drive unit of product structure inside and magnetic circuit system part all are designed to microscler, but microscler drive unit is easy to generate polarization in long and narrow magnetic gap, influence the acoustical behavior of moving-coil type electro-acoustic conversing device.So, be necessary the moving-coil type electro-acoustic conversing device of said structure is improved to avoid above-mentioned defective.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of moving-coil type electro-acoustic conversing device is provided, can avoids the polarization of drive unit, improve the acoustical behavior of moving-coil type electro-acoustic conversing device.
For solving the problems of the technologies described above, the technical solution of the utility model is: moving-coil type electro-acoustic conversing device, the shell of involving vibrations system, magnetic circuit system and fixing described vibrational system and described magnetic circuit system; Described magnetic circuit system comprises magnet, and the center of described magnetic circuit system forms long narrow magnetic gap; Described vibrational system involving vibrations plate and drive unit, described drive unit are flat structure and place the magnetic gap of described magnetic circuit system formation that described drive unit extends setting along described magnetic gap; Described drive unit is provided with at least one group of centring disk, described every group of centring disk is provided with two centring disks that are arranged at respectively on the described drive unit both side ends, a side end and the other end that described each centring disk one end is fixed in described drive unit are fixed on the described shell, and described each centring disk is provided with strain portion.
As a kind of optimized technical scheme, described drive unit is provided with two groups of centring disks, and described two groups of centring disks are arranged at the upper and lower of drive unit both side ends respectively.
As a kind of optimized technical scheme, described each centring disk comprise the fixed part that is used for being connected, be used for the location division that is connected with described shell and be arranged at described fixed part with described drive unit end and described location division between described strain portion, described strain portion is the bent sheet of arc.
As a kind of optimized technical scheme, two centring disks in described every group of centring disk connect by conductive connecting device.
As a kind of optimized technical scheme, two centring disks in described every group of centring disk are integral structure with the conductive connecting device that is connected described two centring disks.
As a kind of optimized technical scheme, described drive unit comprises the speech coil framework of voice coil loudspeaker voice coil and fixing described voice coil loudspeaker voice coil, and an end of described each centring disk is fixed on the described speech coil framework.
As a kind of optimized technical scheme, described magnet is provided with one at least, and described magnet is positioned at the sidepiece of described drive unit, and the magnetic pole of described magnet is provided with magnetic conductive board towards described drive unit between described magnet and shell.
As a kind of optimized technical scheme, described magnet is provided with two groups, described every group of magnet is provided with two and lays respectively at drive unit both sides and horizontally disposed magnet, and two magnet polarity in described every group of magnet are opposite, and described two groups of magnet are arranged above and below and are provided with at interval.
After having adopted technique scheme, the beneficial effects of the utility model are: because the utility model drive unit is provided with centring disk, a side end and the other end that centring disk one end is fixed in drive unit are fixed on the shell, each centring disk is provided with strain portion, therefore, drive unit is realized fixing by centring disk and shell, and in the drive unit vibration processes, strain portion deforms and regulates the mechanical compliance of centring disk and prevent drive unit generation polarization, improved the acoustical behavior of moving-coil type electro-acoustic conversing device, and technology is more easy.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the perspective exploded view of the utility model embodiment;
Fig. 2 is the perspective view of single centring disk among the utility model embodiment;
Fig. 3 is two groups of perspective view that centring disk combines with drive unit among the utility model embodiment;
Fig. 4 is the cross-sectional view of the utility model embodiment;
Fig. 5 is the perspective view after the utility model embodiment removes oscillating plate;
Fig. 6 be when multistage moving-coil type electro-acoustic conversing device links to each other among the utility model embodiment single moving-coil type electro-acoustic conversing device cross-sectional view;
Fig. 7 is two cross-sectional view that moving-coil type electro-acoustic conversing device links to each other among the utility model embodiment;
Fig. 8 is a structural representation when among the utility model embodiment the group centring disk only being set down;
Fig. 9 is the structural representation when group centring disk only is set among the utility model embodiment.
Among the figure: 1. shell, 21. magnetic conductive boards are organized magnet on 22., 23. following group magnet is organized centring disk on 3., 3 '. following group of centring disk, 31. single centring disk, 311. fixed parts, 312. strain portions, 313. location division, 32. conductive connecting device, 41. voice coil loudspeaker voice coils, 42. speech coil frameworks, 51. central part, 52. ring portions.
Embodiment
In the following description, only exemplary embodiment of the present utility model has been described by the mode of explanation.Undoubtedly, those skilled in the art will realize that 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 is represented identical part.
As shown in Figure 1, a kind of moving-coil type electro-acoustic conversing device.This moving-coil type electro-acoustic conversing device integral body is strip, its involving vibrations system, magnetic circuit system and shell 1, and shell 1 is used for fixing vibrational system and magnetic circuit system.
Wherein, described magnetic circuit system comprise magnet and be arranged at magnet and shell 1 between magnetic conductive board 21, the center of this magnetic circuit system forms long narrow magnetic gap.Magnet is provided with one at least, this magnet is positioned at the sidepiece of drive unit, and the magnetic pole of magnet is towards drive unit, in the present embodiment, for increasing magnetic flux, magnet is provided with two groups, these two groups of magnet are arranged above and below and are provided with at interval, be respectively group magnet 22 and group magnet 23 down, every group of magnet is provided with two and lays respectively at drive unit both sides and horizontally disposed magnet, and two magnet polarity in every group of magnet are opposite.
Described vibrational system involving vibrations plate and be fixed in drive unit on the oscillating plate, wherein, elongated central part 51 and the flexible ring portion 52 by rigidity of oscillating plate constitutes, drive unit is that flat structure comprises the voice coil loudspeaker voice coil 41 and the fixing speech coil framework 42 of voice coil loudspeaker voice coil 41, voice coil loudspeaker voice coil 41 be embedded in the speech coil framework 42 and with speech coil framework 42 at grade, the upper end of speech coil framework 42 is fixed on the central part 51 of oscillating plate.The magnetic gap that drive unit places magnetic circuit system to form, and drive unit extends setting along magnetic gap.When voice coil loudspeaker voice coil 41 was connected with alternating current, voice coil loudspeaker voice coil 41 drove speech coil frameworks 42 up-down vibration vertically in the magnetic gap that magnetic circuit system forms.
Shown in Fig. 1 to Fig. 5 is common, in order to prevent in voice coil loudspeaker voice coil 41 and speech coil framework 42 vibration processes polarization to take place, drive unit is provided with at least one group of centring disk, in the present embodiment, drive unit is provided with two groups of centring disks, these two groups of centring disks are arranged at the upper and lower of drive unit both side ends respectively, for last group of centring disk 3 and following group centring disk 3 '.Every group of centring disk is provided with two centring disks 31 that are arranged at respectively on the drive unit both side ends, a side end and the other end that each centring disk 31 1 end is fixed in drive unit are fixed on the shell 1, centring disk 31 1 ends specifically are fixed on the speech coil framework 42 in the drive unit, two centring disks 31 in every group of centring disk are symmetrical arranged, and upper and lower group of centring disk also is symmetrical arranged.The direction that all centring disks 31 extend and the plane parallel at speech coil framework 42 places.
Described each centring disk 31 comprise the fixed part 311 that is used for being connected, be used for the location division 313 that is connected with shell 1 and be arranged at fixed part 311 with the drive unit end and location division 313 between strain portion 312, preferably, this strain portion 312 is the bent sheet of arc, and this design can increase the compliance of centring disk.During assembling, last group of centring disk 3 is incorporated into the top of speech coil framework 42 both side ends by the method for injection moulding, the mode of following group centring disk 3 ' by bonding is incorporated into the bottom of speech coil framework 42 both side ends, fixed part 311 can limit the installation site of centring disk 31 on speech coil framework, and location division 313 can combine with shell 1 by modes such as screw or bondings.Strain portion 312 on the centring disk 31 follows speech coil framework 42 deformation takes place in the process of voice coil loudspeaker voice coil 41 drive speech coil frameworks 42 vibrations, the mechanical compliance of regulating centring disk 31 prevents vibrating device generation polarization.The structure that this two groups of centring disks are individually fixed in the upper and lower of speech coil framework 42 both side ends can prevent effectively that the acoustical behavior that causes owing to generation polarization in voice coil loudspeaker voice coil 41 and speech coil framework 42 vibration processes is bad, and centring disk is arranged on the two ends of moving-coil type electro-acoustic conversing device drive unit major axis, be arranged between drive unit and the shell major axis madial wall than the short-axis direction along moving-coil type electro-acoustic conversing device, technology is more easy.
Each centring disk 31 is a conductive structure, two lead-in wires of voice coil loudspeaker voice coil 41 respectively with last group of centring disk 3 and following group centring disk 3 ' weld together, sense of current is respectively by determining with the external electronic circuits of last group of centring disk 3 and following group centring disk 3 ' be electrically connected in the voice coil loudspeaker voice coil 41.
As shown in Figure 6, when a plurality of moving-coil type electro-acoustic conversing devices link to each other, two centring disks in every group of centring disk 31 are connected by conductive connecting device 32.As shown in Figure 7, when two moving-coil type electro-acoustic conversing devices link to each other, with two moving-coil type electro-acoustic conversing devices go up group centring disk 3 and following group centring disk 3 ' press together respectively, and it is fixedly connected to pass through screw 6, thereby realizes the electrical connection of two electroacoustic transducer centring disks.Voice coil leads respectively with last group of centring disk 3 and following group centring disk 3 ' weld together, the centring disk of the two moving-coil type electro-acoustic conversing devices sense of current that is electrically connected afterwards in each voice coil loudspeaker voice coil is identical, thereby can realize synchronous working.In the present embodiment, two centring disks 31 in every group of centring disk can be designed as integral structure with the conductive connecting device 32 that is connected two centring disks 31, realize that effect is identical.Adopt the centring disk of this structure, when a plurality of moving-coil type electro-acoustic conversing devices connect, the electrical connection between each electroacoustic transducer of easier realization, manufacture craft is simple.
In above implementation process, the combination of centring disk and speech coil framework 42 can change, and as above organizes centring disk 3 and also can combine by the mode of bonding with speech coil framework 42, only need simply improve.Centring disk also can directly be connected with voice coil loudspeaker voice coil 41, realizes preventing the function of voice coil loudspeaker voice coil polarization; Centring disk also can be planar structure, also can adopt the centring disk of non-conducting material; Magnet also can vertically be placed, and magnetic pole is towards the plane that is parallel to the drive unit place.
The foregoing description only is giving an example of the utility model embodiment, protection range of the present utility model is as the criterion with the content of claim, for example: also one group of centring disk can only be set on drive unit, this group centring disk is arranged at the top of drive unit both side ends, group centring disk 3 just only is set, as shown in Figure 9; Can also be that one group of centring disk only is set, this group centring disk is arranged at the bottom of drive unit both side ends, just only be provided with down group centring disk 3 ', as shown in Figure 8, above-mentioned two kinds of structures, the combination of centring disk and speech coil framework is not default, also can directly be connected the function that realizes preventing polarization with voice coil loudspeaker voice coil, in the circuit that a plurality of moving-coil type electro-acoustic conversing devices connect, two centring disks in one group need to be electrically connected, perhaps centring disk is designed to integral structure, above-mentioned two kinds of structures can realize preventing the function of voice coil loudspeaker voice coil 41 and speech coil framework 42 polarizations equally.In a word, any equivalent transformation that carries out based on technology enlightenment of the present utility model is also within protection range of the present utility model.
Claims (10)
1. moving-coil type electro-acoustic conversing device, the shell of involving vibrations system, magnetic circuit system and fixing described vibrational system and described magnetic circuit system; Described magnetic circuit system comprises magnet, and the center of described magnetic circuit system forms long narrow magnetic gap; Described vibrational system involving vibrations plate and drive unit, described drive unit are flat structure and place the magnetic gap of described magnetic circuit system formation that described drive unit extends setting along described magnetic gap; It is characterized in that: described drive unit is provided with at least one group of centring disk, described every group of centring disk is provided with two centring disks that are arranged at respectively on the described drive unit both side ends, a side end and the other end that described each centring disk one end is fixed in described drive unit are fixed on the described shell, and described each centring disk is provided with strain portion.
2. moving-coil type electro-acoustic conversing device as claimed in claim 1 is characterized in that: described drive unit is provided with one group of centring disk, and this group centring disk is arranged at the top of drive unit both side ends.
3. moving-coil type electro-acoustic conversing device as claimed in claim 1 is characterized in that: described drive unit is provided with one group of centring disk, and this group centring disk is arranged at the bottom of drive unit both side ends.
4. moving-coil type electro-acoustic conversing device as claimed in claim 1 is characterized in that: described drive unit is provided with two groups of centring disks, and described two groups of centring disks are arranged at the upper and lower of drive unit both side ends respectively.
5. moving-coil type electro-acoustic conversing device as claimed in claim 1, it is characterized in that: described each centring disk comprise the fixed part that is used for being connected, be used for the location division that is connected with described shell and be arranged at described fixed part with described drive unit end and described location division between described strain portion, described strain portion is the bent sheet of arc.
6. moving-coil type electro-acoustic conversing device as claimed in claim 1 is characterized in that: two centring disks in described every group of centring disk connect by conductive connecting device.
7. moving-coil type electro-acoustic conversing device as claimed in claim 6 is characterized in that: two centring disks in described every group of centring disk are integral structure with the conductive connecting device that is connected described two centring disks.
8. moving-coil type electro-acoustic conversing device as claimed in claim 1 is characterized in that: described drive unit comprises the speech coil framework of voice coil loudspeaker voice coil and fixing described voice coil loudspeaker voice coil, and an end of described each centring disk is fixed on the described speech coil framework.
9. moving-coil type electro-acoustic conversing device as claimed in claim 1, it is characterized in that: described magnet is provided with one at least, described magnet is positioned at the sidepiece of described drive unit, and the magnetic pole of described magnet is provided with magnetic conductive board towards described drive unit between described magnet and described shell.
10. moving-coil type electro-acoustic conversing device as claimed in claim 9, it is characterized in that: described magnet is provided with two groups, described every group of magnet is provided with two and lays respectively at drive unit both sides and horizontally disposed magnet, and two magnet polarity in described every group of magnet are opposite, and described two groups of magnet are arranged above and below and are provided with at interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205951443U CN201869358U (en) | 2010-10-28 | 2010-10-28 | Moving-coil electroacoustic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205951443U CN201869358U (en) | 2010-10-28 | 2010-10-28 | Moving-coil electroacoustic transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201869358U true CN201869358U (en) | 2011-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205951443U Expired - Lifetime CN201869358U (en) | 2010-10-28 | 2010-10-28 | Moving-coil electroacoustic transducer |
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| Country | Link |
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| CN (1) | CN201869358U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019205712A1 (en) * | 2018-04-27 | 2019-10-31 | 歌尔股份有限公司 | Sound emission device |
| WO2019205711A1 (en) * | 2018-04-27 | 2019-10-31 | 歌尔股份有限公司 | Sound emission device |
| CN111711895A (en) * | 2020-08-19 | 2020-09-25 | 歌尔股份有限公司 | Loudspeaker |
| CN112019983B (en) * | 2020-10-20 | 2021-02-05 | 歌尔股份有限公司 | Sound generating device and wearable equipment |
-
2010
- 2010-10-28 CN CN2010205951443U patent/CN201869358U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019205712A1 (en) * | 2018-04-27 | 2019-10-31 | 歌尔股份有限公司 | Sound emission device |
| WO2019205711A1 (en) * | 2018-04-27 | 2019-10-31 | 歌尔股份有限公司 | Sound emission device |
| CN111711895A (en) * | 2020-08-19 | 2020-09-25 | 歌尔股份有限公司 | Loudspeaker |
| CN111711895B (en) * | 2020-08-19 | 2020-12-08 | 歌尔股份有限公司 | Loudspeaker |
| CN112019983B (en) * | 2020-10-20 | 2021-02-05 | 歌尔股份有限公司 | Sound generating device and wearable equipment |
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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. |
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| CX01 | Expiry of patent term |
Granted publication date: 20110615 |
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| CX01 | Expiry of patent term |