CN201789623U - Moving coil type electroacoustic converter - Google Patents
Moving coil type electroacoustic converter Download PDFInfo
- Publication number
- CN201789623U CN201789623U CN2010205174952U CN201020517495U CN201789623U CN 201789623 U CN201789623 U CN 201789623U CN 2010205174952 U CN2010205174952 U CN 2010205174952U CN 201020517495 U CN201020517495 U CN 201020517495U CN 201789623 U CN201789623 U CN 201789623U
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- voice coil
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Abstract
The utility model discloses a moving coil type electroacoustic converter, which comprises a vibration system, a magnetic circuit system and an outer casing which correspondingly fixes the vibration system and the magnetic circuit, wherein the magnetic circuit system comprises at least two magnets which are opposite in magnetic polarity, a partition is arranged between the magnets so as to form two lateral walls of a magnetic gap of the moving coil type electroacoustic converter, and the vibration system comprises a vibration plate and a flat acoustic ring drum which is correspondingly arranged in the magnetic gap and vibrates vertically along the magnetic gap. Comparing with prior art, the electroacoustic converter has the advantages that the magnetic performance and the acoustic performance of the moving coil type electroacoustic converter can be improved when the size of the moving coil type electroacoustic converter is limited.
Description
Technical field
The utility model relates to the electroacoustic transducer technical field, specifically, relates to a kind of moving-coil type electro-acoustic conversing device.
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.The operation principle of well-known moving-coil type electro-acoustic conversing device is, the voice coil loudspeaker voice coil that is connected with alternating current is subjected to Lorentz force and makes vibration on the vibrational system generation vertical direction of moving-coil type electro-acoustic conversing device and sounding in magnetic field.
At present, be applied in the moving-coil type electro-acoustic conversing device of electronic components 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 vibrating diaphragm of product structure inside and magnetic circuit system part all are designed to strip, and voice coil loudspeaker voice coil need be designed to long narrow voice coil tube.But the moving-coil type electro-acoustic conversing device of this traditional structure is because the particularly restriction on the Width of size, cause the width of voice coil loudspeaker voice coil and magnetic circuit system to be restricted, thereby cause the magnetic property of moving-coil type electro-acoustic conversing device to be restricted, and then influenced the acoustical behavior of product.
So, be necessary the moving-coil type electro-acoustic conversing device of said structure is further improved, to avoid above-mentioned defective.
The utility model content
The utility model is made in order to solve above-mentioned problems of the prior art, its purpose is to provide a kind of miniature moving-coil type electroacoustic transducer that has improved vibrational system and magnetic circuit system, under the situation that the moving-coil type electro-acoustic conversing device size is restricted, can increase the magnetic property of moving-coil type electro-acoustic conversing device, improve the acoustical behavior of moving-coil type electro-acoustic conversing device.
To achieve these goals, a kind of moving-coil type electro-acoustic conversing device that the utility model provides, the shell of involving vibrations system, magnetic circuit system and corresponding fixing described vibrational system and magnetic circuit system, corresponding fixing described vibrational system of described shell and magnetic circuit system, and, described magnetic circuit system comprises the magnet that at least two polarity are oppositely arranged, and is provided with between the described magnet at interval, to form the two side of described moving-coil type electro-acoustic conversing device magnetic gap; Described vibrational system involving vibrations plate and flat voice coil tube, described voice coil tube correspondence is arranged in the described magnetic gap, and described voice coil tube correspondence is arranged in the described magnetic gap and along described magnetic gap in the vertical direction to be vibrated.
As a kind of improvement, described magnetic circuit system also comprises magnetic conductive board, and described magnetic conductive board is arranged between described shell and the described magnet.
As a kind of improvement, the magnet of described magnetic circuit system comprises two pairs of magnet that are oppositely arranged respectively.
As a kind of improvement, the magnet of described magnetic circuit system is the magnet of pair of opposing.
As a kind of improvement, described magnetic conductive board is provided with and makes projection or the bending part of one end near described voice coil tube.
As a kind of improvement, the magnetic pole of described magnet and corresponding with the end face wall thickness of described voice coil tube respectively near an end of described voice coil tube.
As a kind of improvement, described voice coil loudspeaker voice coil is fixed on the voice coil suspension of planar structure, the fixedly connected central part at described vibrating diaphragm of described voice coil suspension.
As a kind of improvement, described moving-coil type electro-acoustic conversing device is a strip.
As a kind of improvement, described magnet is strip, and described voice coil tube is a runway shape, the magnetic pole of the corresponding described magnet of the major axis of described voice coil tube.
Owing to taked the moving-coil type electro-acoustic conversing device after the above technology provided by the utility model, than conventional art, under the situation that the moving-coil type electro-acoustic conversing device size is restricted, can increase the magnetic property of moving-coil type electro-acoustic conversing device, improve the acoustical behavior of moving-coil type electro-acoustic conversing device.
Description of drawings
By below in conjunction with accompanying drawing embodiment being described, above-mentioned feature of the present utility model and technological merit will become apparent and understand easily.
Fig. 1 is the stereogram of the moving-coil type electro-acoustic conversing device that relates to of expression embodiment one;
Fig. 2 is that the A-A of presentation graphs 1 is to cutaway view;
Fig. 3 is the voice coil tube of this moving-coil type electro-acoustic conversing device of expression and the vertical view of support combination;
Fig. 4 is the magnetic circuit system of this moving-coil type electro-acoustic conversing device of expression and the schematic perspective view that voice coil tube, voice coil suspension make up;
Fig. 5 is the generalized section that the magnetic circuit system of this moving-coil type electro-acoustic conversing device of expression combines with voice coil tube, support;
Fig. 6 is the generalized section that the magnetic circuit system of the moving-coil type electro-acoustic conversing device that relates to of expression embodiment two combines with voice coil tube, support;
Fig. 7 is the generalized section that the magnetic circuit system of the moving-coil type electro-acoustic conversing device that relates to of expression embodiment three combines with voice coil tube, support.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done further detailed description.
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:
Fig. 1 is the stereogram of the moving-coil type electro-acoustic conversing device that relates to of expression present embodiment, and Fig. 2 is that the A-A of presentation graphs 1 is to cutaway view; Fig. 3 is the voice coil tube of this moving-coil type electro-acoustic conversing device of expression and the vertical view of support combination; Fig. 4 is the magnetic circuit system of this moving-coil type electro-acoustic conversing device of expression and the schematic perspective view that voice coil tube, voice coil suspension make up; Fig. 5 is the generalized section that the magnetic circuit system of this moving-coil type electro-acoustic conversing device of expression combines with voice coil tube, support.As Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, moving-coil type electro-acoustic conversing device provided by the utility model is the strip structure, mainly comprises shell 1, vibrational system and magnetic circuit system, and shell 1 is in the same place vibrational system and magnetic circuit system secure bond.
Vibrational system comprises the oscillating plate of the strip that is made of the central part 51 of rigidity and flexible ring portion 52 and the drive unit that is made of flat voice coil tube 41 and the corresponding fixedly voice coil suspension 42 of voice coil tube 41.Wherein an end of ring portion 52 connects and centre of support portion 51, and the other end is fixed on the shell 1, and the body of ring portion 52 is positioned on the vertical direction on plane, central part 51 place, to increase the driving area of central part 51; One end of voice coil suspension 42 is fixed on the central part 51, thereby oscillating plate 5 and drive unit have constituted vibrational system; Wherein, voice coil suspension 42 is a flat board along the extension of moving-coil type electro-acoustic conversing device long axis direction, and voice coil tube 41 is a racetrack, and the major axis of voice coil tube 41 is along the bearing of trend extension of voice coil suspension 42.
Magnetic circuit system comprises two magnetic conductive boards 2 that are oppositely arranged and the two groups of magnet that are provided with at interval 3 up and down that are provided with in magnetic conductive board 2 inside, magnet 3 is strip and extends along the long axis direction of moving-coil type electro-acoustic conversing device, make between two groups of magnet 3 two sidewalls that form long narrow magnetic gap, every group of magnet 3 is oppositely arranged, and its magnetic pole is opposite.
When described drive unit is installed to the magnetic gap of described magnetic circuit system, the two ends of voice coil tube 41 are respectively towards two sidewalls of long and narrow magnetic gap, when voice coil tube 41 was connected with ac signal by lead 43, voice coil tube 41 was just vibrated along the magnetic gap in the vertical direction of magnetic circuit system.For increasing the actuating force of drive unit, two major axis of the end face of voice coil tube 41 partly lay respectively at the magnetic pole of two groups of magnet 3, its wall thickness is corresponding with magnetic pole, and voice coil tube 41 is perpendicular to two sidewalls of magnetic gap, at this moment, the magnetic flux of voice coil tube 41 is main directly from the magnetic pole of two groups of magnet that are oppositely arranged 41, can realize bigger power so that be subjected to bigger actuating force in the voice coil tube 41.
Owing to adopted the design of above-mentioned magnetic structure, and the corresponding flat coil of employing, saved the inner space of moving-coil type electro-acoustic conversing device, can improve its acoustical behavior by increasing magnet size; Particularly under the restricted situation of moving-coil type electro-acoustic conversing device width dimensions, can keep the good acoustic performance of moving-coil type electro-acoustic conversing device.
Embodiment two:
Fig. 6 is the generalized section that the magnetic circuit system of the moving-coil type electro-acoustic conversing device that relates to of expression embodiment two combines with voice coil tube, support; As shown in Figure 6, the main difference of present embodiment and the foregoing description is, magnetic circuit system comprises that one group is oppositely arranged and opposite polarity magnet 3 in the present embodiment, and magnetic conductive board 2 ' and voice coil tube 41 close ends are provided with and make the projection of magnetic conductive board 2 ' near voice coil tube 41.In this example, the magnetic flux at the major axis place, voice coil tube 41 upper end of corresponding magnet 3 is mainly from two magnet 3 that are oppositely arranged, and the jut that the magnetic flux at lower end major axis place then mainly passes through by magnetic conductive board 2 ' assigns to conduct, thereby forms a closed flux path.
This design can be implemented according to the different demands to properties of product equally, can realize the technique effect of above-mentioned implementation process equally, and contrast above-mentioned implementation process, has saved magnet in this implementation process, thereby has reduced production cost.
Embodiment three:
Fig. 7 is the generalized section that the magnetic circuit system of the moving-coil type electro-acoustic conversing device that relates to of expression embodiment three combines with voice coil tube, support, as shown in Figure 7, this implementation process is magnetic conductive board 2 with the main distinction of above-mentioned implementation process " structure different; the magnetic conductive board 2 of the end cross-sectional correspondence at the major axis place, lower end of voice coil tube 41 in this implementation process " be provided with the bending near voice coil tube 41, magnetic conductive board 2 " bend the magnetic flux that increases major axis place, voice coil tube 41 lower end by this.This design can realize the technique effect of above-mentioned implementation process equally, and can satisfy more production design requirement.
In the above-described embodiments, preferred magnetic circuit system correspondence is arranged on the center of moving-coil type electro-acoustic conversing device, and drive unit is corresponding to combine with the center of vibrating diaphragm.Under above-mentioned instruction of the present utility model; those skilled in the art can carry out various improvement and distortion on the basis of the foregoing description; and these improvement and distortion; all drop in the protection range of the present utility model; those skilled in the art should be understood that; above-mentioned specific descriptions are just better explained the purpose of this utility model, and protection range of the present utility model is limited by claim and equivalent thereof.
Claims (9)
1. moving-coil type electro-acoustic conversing device, the shell of involving vibrations system, magnetic circuit system and corresponding fixing described vibrational system and magnetic circuit system, corresponding fixing described vibrational system of described shell and magnetic circuit system is characterized in that,
Described magnetic circuit system comprises the magnet that at least two polarity are oppositely arranged, and is provided with between the described magnet at interval, to form the two side of described moving-coil type electro-acoustic conversing device magnetic gap;
Described vibrational system involving vibrations plate and flat voice coil tube, described voice coil tube correspondence is arranged in the described magnetic gap, and described voice coil tube correspondence is arranged in the described magnetic gap and along described magnetic gap in the vertical direction to be vibrated.
2. according to the described moving-coil type electro-acoustic conversing device of claim 1, it is characterized in that,
Described magnetic circuit system also comprises magnetic conductive board, and described magnetic conductive board is arranged between described shell and the described magnet.
3. according to the described moving-coil type electro-acoustic conversing device of claim 2, it is characterized in that,
The magnet of described magnetic circuit system comprises two pairs of magnet that are oppositely arranged respectively.
4. according to the described moving-coil type electro-acoustic conversing device of claim 2, it is characterized in that,
The magnet of described magnetic circuit system is the magnet of pair of opposing.
5. according to the described moving-coil type electro-acoustic conversing device of claim 4, it is characterized in that,
Described magnetic conductive board is provided with and makes projection or the bending part of one end near described voice coil tube.
6. according to claim 4 or 5 described moving-coil type electro-acoustic conversing devices, it is characterized in that,
The magnetic pole of described magnet and corresponding with the end face wall thickness of described voice coil tube respectively near an end of described voice coil tube.
7. according to the described moving-coil type electro-acoustic conversing device of claim 6, it is characterized in that,
Described voice coil loudspeaker voice coil is fixed on the voice coil suspension of planar structure, the fixedly connected central part at described vibrating diaphragm of described voice coil suspension.
8. according to the described moving-coil type electro-acoustic conversing device of claim 1, it is characterized in that,
Described moving-coil type electro-acoustic conversing device is a strip.
9. according to the described moving-coil type electro-acoustic conversing device of claim 8, it is characterized in that,
Described magnet is strip, and described voice coil tube is a runway shape, the magnetic pole of the corresponding described magnet of the major axis of described voice coil tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205174952U CN201789623U (en) | 2010-09-01 | 2010-09-01 | Moving coil type electroacoustic converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205174952U CN201789623U (en) | 2010-09-01 | 2010-09-01 | Moving coil type electroacoustic converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201789623U true CN201789623U (en) | 2011-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205174952U Expired - Lifetime CN201789623U (en) | 2010-09-01 | 2010-09-01 | Moving coil type electroacoustic converter |
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| CN (1) | CN201789623U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018157515A1 (en) * | 2017-03-02 | 2018-09-07 | 歌尔股份有限公司 | Housing used for linear vibration motor and linear vibration motor |
| CN111970618A (en) * | 2020-10-20 | 2020-11-20 | 歌尔股份有限公司 | Sound generating device and wearable equipment |
| CN112019983B (en) * | 2020-10-20 | 2021-02-05 | 歌尔股份有限公司 | Sound generating device and wearable equipment |
| WO2022062008A1 (en) * | 2020-09-25 | 2022-03-31 | 瑞声声学科技(深圳)有限公司 | Sound production unit and speaker box |
-
2010
- 2010-09-01 CN CN2010205174952U patent/CN201789623U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018157515A1 (en) * | 2017-03-02 | 2018-09-07 | 歌尔股份有限公司 | Housing used for linear vibration motor and linear vibration motor |
| WO2022062008A1 (en) * | 2020-09-25 | 2022-03-31 | 瑞声声学科技(深圳)有限公司 | Sound production unit and speaker box |
| CN111970618A (en) * | 2020-10-20 | 2020-11-20 | 歌尔股份有限公司 | Sound generating device and wearable equipment |
| CN111970618B (en) * | 2020-10-20 | 2021-01-22 | 歌尔股份有限公司 | Sound generating device and wearable equipment |
| 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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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |