CN215818608U - Dynamic magnetic sounding unit - Google Patents
Dynamic magnetic sounding unit Download PDFInfo
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- CN215818608U CN215818608U CN202121488161.1U CN202121488161U CN215818608U CN 215818608 U CN215818608 U CN 215818608U CN 202121488161 U CN202121488161 U CN 202121488161U CN 215818608 U CN215818608 U CN 215818608U
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- shell
- coil
- magnetic core
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- 229920002799 BoPET Polymers 0.000 claims abstract description 16
- 239000005041 Mylar™ Substances 0.000 claims abstract description 16
- 239000000306 component Substances 0.000 claims description 15
- 239000008358 core component Substances 0.000 claims description 10
- 229920001187 thermosetting polymer Polymers 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 7
- 229920000742 Cotton Polymers 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
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- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
The utility model provides a moving magnetic sounding unit, which comprises a magnetic core vibration sounding component, a coil component, a shell component and a fixed component, wherein the magnetic core vibration sounding component is arranged on the magnetic core vibration sounding component; the coil assembly is sleeved outside the magnetic core vibration sounding assembly and is fixed inside the shell assembly through the fixing assembly, and the whole body is a cylindrical sounding unit; the magnetic core vibration sounding assembly consists of a magnetic core, a magnetic conductivity shell sleeved outside the magnetic core, a mylar film at the opening and a positioning ring at the outer ring; the coil assembly comprises a coil and a coil bracket for fixing the coil; the shell component comprises a cylindrical shell and a cover plate which is arranged at the bottom of the shell and matched with the shell to form a middle cavity; has the advantages that: the cylinder is arranged, the vibration direction and the sound outlet hole are coaxial, so that sound can be directionally transmitted in a certain space, and when more than three units are combined at an angle, a three-dimensional sound field can be created in a local space; the structure is simple, the processing is easy, and the micro volume of the unit is realized; strong impact resistance and good anti-interference performance.
Description
Technical Field
The utility model mainly relates to the technical field of audio generator elements, in particular to a dynamic magnetic sounding unit.
Background
A speaker is an important acoustic component of a portable electronic device, is used for converting an electric signal and a sound signal, and is an energy conversion device. The speaker that is arranged in portable electronic equipment at present is mostly moving coil loudspeaker, and moving coil loudspeaker's theory of operation is that the circular telegram voice coil loudspeaker voice coil receives the effect of ampere force in magnetic field, drives the vibrating diaphragm vibration sound production.
Published chinese utility model patent, application No. CN201720269746.1, patent name: moving-magnet speaker, application date: 20170318, the utility model relates to a moving-magnet loudspeaker, relating to the technical field of electroacoustic products, comprising a shell, wherein a vibrating diaphragm and a voice coil arranged in parallel with the vibrating diaphragm are accommodated in the shell, and a driving magnet is fixed on one side of the vibrating diaphragm close to the voice coil; and the voice coil forms an electromagnet after being electrified, and generates an interaction force with the driving magnet to drive the vibrating diaphragm to vibrate and sound. The moving-magnet loudspeaker solves the technical problems of poor high-frequency transient response and the like of the moving-coil loudspeaker in the prior art, has good high-frequency transient response, low F0, good sensitivity and high overall performance, and can meet the performance requirements of high-fidelity equipment.
The sound generating unit of this type has inevitable problems that the unit volume is difficult to be made small and is easy to be damaged because it is difficult to control the gap between the coil and the magnet and to obtain effective support.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a novel dynamic magnetic sounding unit structure.
The utility model provides a moving-magnet sounding unit, which comprises a magnetic core component, a coil component, a shell component and a fixed component, wherein the magnetic core component is arranged on the shell component; the coil assembly is sleeved outside the magnetic core assembly and is fixed inside the shell assembly through the fixing assembly, and the whole body is a cylindrical sounding unit;
the magnetic core assembly comprises a magnetic core 8 and a magnetic shell 3 sleeved outside the magnetic core 8;
the coil assembly comprises a coil 9 and a coil support 7 for fixing the coil 9; the coil 9 is wound on the coil support 7;
the shell component comprises a cylindrical shell 14, a cover plate 11 arranged at the bottom of the shell 14 and matched with the shell 14 to form a middle cavity, a circuit board 12 arranged on the outer surface of the cover plate 11 and a signal access point 13 arranged on the circuit board 12; the center of the top of the shell 14 is also provided with a sound outlet hole 1;
the fixing component comprises a boss 5, a fixing ring 6 and a positioning bracket 10; the boss 5 and the fixing ring 6 are both arranged at the top of the inner cavity of the shell 14; the positioning bracket 10 is clamped between the shell 14 and the cover plate 11 and is used for being matched with the boss 5 and the fixing ring 6 to fix the magnetic core assembly and the coil assembly in an inner cavity formed by matching the shell 14 and the cover plate 11;
also comprises a Mylar film 4; the Mylar film (4) is respectively bonded with the flange part of the opening part of the magnetic conductivity shell (3) and the fixing ring (6) by thermosetting, and the thermosetting bonding part is in the shape of an annular raised runway; the bottom of the magnetic core component is fixed on the positioning bracket (10), and the top of the magnetic core component is fixed on the Mylar film (4) in a thermosetting bonding mode.
Preferably, the outer surface of the sound outlet of the shell (14) is also provided with dustproof tuning cotton (2).
Preferably, the cross section of the magnetic conductive shell (3) is U-shaped, the mouth flange is abutted and arranged on the mylar film (11) in a hot bonding mode, and the bottom of the magnetic conductive shell is fixedly clamped and embedded in the center of the positioning support (10) through laser welding.
Preferably, the top of the coil support 7 is abutted against the fixing ring 6, and the bottom of the coil support is abutted against the positioning support 10.
Preferably, the vertical section of the coil support 7 is in an i shape, and the groove part in the middle is used for winding a coil.
Preferably, 3 or 4 bosses (5) are arranged in a circle in an equally-divided mode, and inward punch forming is adopted.
The utility model has the beneficial effects that: the vibration sound-producing mechanism is arranged on the same axis, the vibration direction and the sound outlet hole of the vibration sound-producing mechanism are on the same axis, sound can be directionally transmitted in a certain space in a mode of controlling the direction of the shell, and a three-dimensional sound field can be created in a local space in a mode of combining more than three units; the dynamic magnetic sounding unit is simple in structure and easy to process, and can realize tiny volume of the unit; thirdly, the structure of the dynamic magnetic sounding unit has good impact resistance and anti-interference performance.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure, the position of the upper end of the main shaft,
1. a sound outlet hole; 2. dustproof tuning cotton; 3. a magnetically permeable shell; 4. a Mylar film; 5. a boss; 6. a fixing ring; 7. a coil support; 8. a magnetic core; 9. a coil; 10. positioning the bracket; 11. a cover plate; 12. a circuit board; 13. connecting a signal into a welding spot; 14. a housing.
Detailed Description
The present invention will now be described in detail with reference to the drawings, which are given by way of illustration and explanation only and should not be construed to limit the scope of the present invention in any way.
The utility model provides a moving-magnet sounding unit, which comprises a magnetic core component, a coil component, a shell component and a fixed component, wherein the magnetic core component is arranged on the shell component; the coil assembly is sleeved outside the magnetic core assembly and is fixed inside the shell assembly through the fixing assembly, and the whole body is a cylindrical sounding unit;
the magnetic core assembly comprises a magnetic core 8 and a magnetic shell 3 sleeved outside the magnetic core 8;
the coil assembly comprises a coil 9 and a coil support 7 for fixing the coil 9; the coil 9 is wound on the coil support 7;
the shell component comprises a cylindrical shell 14, a cover plate 11 arranged at the bottom of the shell 14 and matched with the shell 14 to form a middle cavity, a circuit board 12 arranged on the outer surface of the cover plate 11 and a signal access point 13 arranged on the circuit board 12; the center of the top of the shell 14 is also provided with a sound outlet hole 1;
the fixing component comprises a boss 5, a fixing ring 6 and a positioning bracket 10; the boss 5 and the fixing ring 6 are both arranged at the top of the inner cavity of the shell 14; the positioning bracket 10 is clamped between the shell 14 and the cover plate 11 and is used for being matched with the boss 5 and the fixing ring 6 to fix the magnetic core assembly and the coil assembly in an inner cavity formed by matching the shell 14 and the cover plate 11;
also comprises a Mylar film 4; the Mylar film (4) is respectively bonded with the flange part of the opening part of the magnetic conductivity shell (3) and the fixing ring (6) by thermosetting, and the thermosetting bonding part is in the shape of an annular raised runway; the bottom of the magnetic core component is fixed on the positioning bracket (10), and the top of the magnetic core component is fixed on the Mylar film (4) in a thermosetting bonding mode.
In the embodiment, preferably, the outer surface of the sound outlet of the shell (14) is also provided with dustproof tuning cotton (2).
In the preferred embodiment, the cross section of the magnetic conductive shell (3) is U-shaped, the mouth flange is abutted and thermally adhered to the mylar film (11), and the bottom of the shell is fixed to the center of the positioning bracket (10) by laser welding.
Preferably, in this embodiment, the top of the coil support 7 abuts against the fixing ring 6, and the bottom abuts against the positioning support 10.
In this embodiment, preferably, the vertical section of the coil support 7 is in an i shape, and a groove portion in the middle is used for winding a coil.
In the embodiment, preferably, 3 or 4 bosses (5) are equally arranged around the circumference, and inward punch forming is adopted.
Set up above-mentioned structure for whole sound generating unit's structure is compacter, reduces whole sound generating unit's volume.
In the embodiment, preferably, 3 or 4 bosses (5) are equally arranged around the circumference, and inward punch forming is adopted.
During assembly, the magnetic core 8 is firstly arranged in the magnetic conductive shell 3 and fixed by glue, then the magnetic core 8, the magnetic conductive shell 3 assembly and the fixing ring 6 are bonded into an assembly through thermosetting molding through the Mylar film 4, the assembly is arranged in the shell 14, then the coil assemblies 7 and 9 and the positioning bracket 10 are sequentially arranged, the top end of the magnetic conductive shell 3 is inserted into a central hole of the positioning bracket 10, the magnetic core and the magnetic conductive shell are welded through laser welding, a lead of the coil 9 is led out, the cover plate 11 is covered, the cover plate 11 and the shell 14 are connected through laser welding, and the lead is welded on a signal access welding spot 13 of the circuit board 12 respectively to complete the assembly.
Whole sound producing unit is the cylinder setting, and is small, and electroacoustic conversion efficiency is high, and sound directive property is good, but the wide application is in various earphones, VR equipment and various head-mounted devices.
It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The above-described embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (6)
1. A moving-magnet sounding unit comprises a magnetic core assembly, a coil assembly, a shell assembly and a fixed assembly; the coil assembly is sleeved outside the magnetic core assembly and is fixed inside the shell assembly through the fixing assembly, and the whole body is a cylindrical sounding unit;
it is characterized in that the preparation method is characterized in that,
the magnetic core assembly comprises a magnetic core (8) and a magnetic conductivity shell (3) sleeved outside the magnetic core (8);
the coil assembly comprises a coil (9) and a coil support (7) for fixing the coil (9); the coil (9) is wound on the coil support (7);
the shell component comprises a cylindrical shell (14), a cover plate (11) which is arranged at the bottom of the shell (14) and matched with the shell (14) to form a middle cavity, a circuit board (12) arranged on the outer surface of the cover plate (11) and a signal access point (13) arranged on the circuit board (12); the center of the top of the shell (14) is also provided with a sound outlet hole (1);
the fixing component comprises a boss (5), a fixing ring (6) and a positioning bracket (10); the boss (5) and the fixing ring (6) are both arranged at the top of the inner cavity of the shell (14); the positioning support (10) is clamped and embedded between the shell (14) and the cover plate (11) and is used for being matched with the boss (5) and the fixing ring (6) to fix the magnetic core assembly and the coil assembly in an inner cavity formed by matching the shell (14) and the cover plate (11);
also comprises a Mylar film (4); the Mylar film (4) is respectively bonded with the flange part of the opening part of the magnetic conductivity shell (3) and the fixing ring (6) by thermosetting, and the thermosetting bonding part is in the shape of an annular raised runway; the bottom of the magnetic core component is fixed on the positioning bracket (10), and the top of the magnetic core component is fixed on the Mylar film (4) in a thermosetting bonding mode.
2. The moving-magnet sound generating unit according to claim 1, characterized in that: and the outer surface of the sound outlet of the shell (14) is also provided with dustproof tuning cotton (2).
3. The moving-magnet sound generating unit according to claim 2, characterized in that: the cross section of the magnetic conductive shell (3) is U-shaped, the mouth flange is abutted and thermally adhered to the Mylar film (4), and the bottom of the Mylar film is fixed at the central part of the positioning bracket (10) in an embedded manner through laser welding.
4. The moving-magnet sound generating unit according to claim 3, characterized in that: the top of the coil support (7) is abutted against the fixing ring (6), and the bottom of the coil support is abutted against the positioning support (10).
5. The moving-magnet sound generating unit according to claim 4, wherein: the vertical section of the coil support (7) is I-shaped, and the groove part in the middle is used for winding a coil.
6. The moving-magnet sound generating unit according to claim 5, characterized in that: 3 or 4 bosses (5) are arranged in equal parts in the circumference, and inward punch forming is adopted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121488161.1U CN215818608U (en) | 2021-07-01 | 2021-07-01 | Dynamic magnetic sounding unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121488161.1U CN215818608U (en) | 2021-07-01 | 2021-07-01 | Dynamic magnetic sounding unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215818608U true CN215818608U (en) | 2022-02-11 |
Family
ID=80179940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121488161.1U Expired - Fee Related CN215818608U (en) | 2021-07-01 | 2021-07-01 | Dynamic magnetic sounding unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215818608U (en) |
-
2021
- 2021-07-01 CN CN202121488161.1U patent/CN215818608U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220211 |