CN219876071U - Micro-speaker and audio device - Google Patents
Micro-speaker and audio device Download PDFInfo
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- CN219876071U CN219876071U CN202320223002.1U CN202320223002U CN219876071U CN 219876071 U CN219876071 U CN 219876071U CN 202320223002 U CN202320223002 U CN 202320223002U CN 219876071 U CN219876071 U CN 219876071U
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- 238000009434 installation Methods 0.000 claims abstract description 9
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 241000255925 Diptera Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses a micro-speaker and audio equipment, the micro-speaker includes: a housing assembly; the magnetic assembly is arranged in the shell assembly and comprises a first magnetic piece and a second magnetic piece which is spaced from the first magnetic piece and is arranged opposite to the first magnetic piece, an installation gap is formed between the first magnetic piece and the second magnetic piece, and the magnetic pole of one side of the first magnetic piece, which is close to the second magnetic piece, is the same as the magnetic pole of one side of the second magnetic piece, which is close to the first magnetic piece; the vibration assembly is arranged in the shell assembly and comprises a vibrating diaphragm connected with the shell assembly and a flat voice coil connected to the vibrating diaphragm, and the flat voice coil is arranged in the installation gap; the flat voice coil can form a north-south magnetic pole when being electrified, the north magnetic pole of the flat voice coil faces the second magnetic piece when the south magnetic pole of the flat voice coil faces the first magnetic piece, and the south magnetic pole of the flat voice coil faces the second magnetic piece when the north magnetic pole of the flat voice coil faces the first magnetic piece.
Description
Technical Field
The utility model relates to the technical field of speakers, in particular to a miniature speaker and audio equipment.
Background
With the development of the TWS (true wireless stereo, real wireless stereo) earphone, the TWS earphone is gradually developed towards miniaturization, so that each component of the TWS earphone needs to be required to be developed towards miniaturization, and the loudspeaker is one of key components of the TWS earphone, so that the occupied space of the loudspeaker is reduced, and the volume of the TWS earphone can be effectively reduced. In the related art, most of horns have higher total height and large occupied space, so that the development of earphone miniaturization is limited.
The main reason that the total height of most of the loudspeakers is high at present is that the voice coils of the loudspeakers generally adopt long voice coils, the total height is high after the long voice coils are overlapped with the vibrating diaphragm, and when the long voice coils are adopted, a part of voice coils are not in a linear magnetic field, so that the distortion degree is high.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the micro loudspeaker, which can reduce the occupied space of the loudspeaker and/or reduce distortion.
The utility model also provides audio equipment with the micro loudspeaker.
According to an embodiment of the first aspect of the present utility model, a micro horn includes: a housing assembly; the magnetic assembly is arranged in the shell assembly and comprises a first magnetic piece and a second magnetic piece which is arranged at intervals with the first magnetic piece and is opposite to the first magnetic piece, an installation gap is formed between the first magnetic piece and the second magnetic piece, and the magnetic pole of one side, close to the second magnetic piece, of the first magnetic piece is identical to the magnetic pole of one side, close to the first magnetic piece, of the second magnetic piece; the vibration assembly is arranged in the shell assembly and comprises a vibrating diaphragm connected with the shell assembly and a flat voice coil connected to the vibrating diaphragm, and the flat voice coil is arranged in the mounting gap; the flat voice coil can form a north-south magnetic pole when being electrified, the north magnetic pole of the flat voice coil faces the second magnetic piece when the south magnetic pole of the flat voice coil faces the first magnetic piece, and the south magnetic pole of the flat voice coil faces the second magnetic piece when the north magnetic pole of the flat voice coil faces the first magnetic piece.
The micro horn provided by the embodiment of the utility model has at least the following beneficial effects:
in the micro-horn of the present utility model, when the flat voice coil is energized, the direction of the current in the flat voice coil is changed, and thus, the position of the north-south magnetic pole of the flat voice coil is changed. When flat voice coil loudspeaker voice coil circular telegram, flat voice coil loudspeaker voice coil can be towards or move in the first magnetic part of dorsad under the combined action of first magnetic part and second magnetic part to drive vibrating diaphragm vibration, the effort that flat voice coil loudspeaker voice coil received is big, is favorable to improving electromagnetic conversion efficiency, and, first magnetic part and second magnetic part can provide more even magnetic field, and flat voice coil loudspeaker voice coil sets up the installation clearance between first magnetic part and second magnetic part, and flat voice coil loudspeaker voice coil's vast majority is in even linear magnetic field, so, can improve flat voice coil loudspeaker voice coil motion accuracy, reduce the distortion.
The miniature loudspeaker of the utility model adopts the flat voice coil, so that the total height of the loudspeaker can be reduced on the whole, and the occupied space is reduced.
According to some embodiments of the utility model, the wires of the flat voice coil form a spiral structure, and a length direction of an axis of the spiral structure is the same as a spacing direction of the first magnetic member and the second magnetic member.
According to some embodiments of the utility model, the helical structure is provided with a ring armature on the inside.
According to some embodiments of the utility model, the outer edge of the diaphragm is connected to the housing assembly, the middle part of the diaphragm is of a planar structure, and the flat voice coil is fixed to the middle part of the diaphragm.
According to some embodiments of the utility model, the flat voice coil is bonded to the diaphragm.
According to some embodiments of the utility model, the housing assembly is provided with an acoustic port.
According to some embodiments of the utility model, the first magnetic member is provided with a first central hole, the second magnetic member is provided with a second central hole coaxially arranged with the first central hole, and the housing assembly is provided with an acoustic outlet hole opposite to the second central hole.
According to some embodiments of the utility model, the housing assembly comprises a bracket and a cover body covered on the bracket, wherein the first magnetic piece is fixed on the inner side of the bracket, and the second magnetic piece is fixed on the inner side of the cover body.
According to some embodiments of the utility model, a fixing ring is connected to the outer periphery of the diaphragm, the fixing ring is arranged on the bracket, and the cover presses on the fixing ring.
An audio device according to an embodiment of the second aspect of the utility model comprises a micro-horn as described above.
The audio device according to the embodiment of the utility model has at least the following beneficial effects:
in the audio equipment, when the flat voice coil is electrified, the direction of current in the flat voice coil is changed, so that the positions of the north and south magnetic poles of the flat voice coil are changed. When flat voice coil loudspeaker voice coil circular telegram, flat voice coil loudspeaker voice coil can be towards or move in the first magnetic part of dorsad under the combined action of first magnetic part and second magnetic part to drive vibrating diaphragm vibration, the effort that flat voice coil loudspeaker voice coil received is big, is favorable to improving electromagnetic conversion efficiency, and, first magnetic part and second magnetic part can provide more even magnetic field, and flat voice coil loudspeaker voice coil sets up the installation clearance between first magnetic part and second magnetic part, and flat voice coil loudspeaker voice coil's vast majority is in even linear magnetic field, so, can improve flat voice coil loudspeaker voice coil motion accuracy, reduce the distortion.
The micro loudspeaker provided by the utility model adopts the flat voice coil, so that the total height of the loudspeaker can be reduced on the whole, the occupied space is reduced, the volume of the audio equipment is reduced, and the audio equipment is miniaturized.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The utility model is further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic bottom view of a micro-speaker according to an embodiment of the present utility model;
FIG. 2 is a schematic cross-sectional view of the graphic of FIG. 1 taken along section A-A;
FIG. 3 is an enlarged view at B in FIG. 2;
FIG. 4 is a schematic top view of a micro-speaker according to an embodiment of the present utility model;
fig. 5 is a schematic cross-sectional view of a micro-speaker according to another embodiment of the present utility model.
Reference numerals:
10. a mounting gap;
100. a housing assembly; 101. a sound outlet hole; 102. a wire through hole; 103. a tuning hole; 110. a bracket; 120. a cover body;
200. a magnetic assembly; 210. a first magnetic member; 211. a first mesopore; 220. a second magnetic member; 221. a second mesopore;
300. a vibration assembly; 310. a vibrating diaphragm; 320. a flat voice coil;
400. a fixing ring;
500. a ring armature;
600. a PCB board;
700. tuning net.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and to simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 4, a micro-speaker according to an embodiment of the present utility model includes a housing assembly 100, a magnetic assembly 200, and a vibration assembly 300.
As shown in fig. 2, the housing assembly 100 is a hollow structure.
The magnetic assembly 200 is disposed inside the housing assembly 100, the magnetic assembly 200 includes a first magnetic member 210 and a second magnetic member 220 disposed opposite to the first magnetic member 210 with a mounting gap 10 formed between the first magnetic member 210 and the second magnetic member 220, and a side of the first magnetic member 210 close to the second magnetic member 220 is the same as a magnetic pole of a side of the second magnetic member 220 close to the first magnetic member 210.
Specifically, the first magnetic element 210 and the second magnetic element 220 are both magnetic members, and optionally, the first magnetic element 210 and the second magnetic element 220 are both magnets. The first magnetic element 210 and the second magnetic element 220 are both fixedly disposed inside the housing assembly 100, the relative positions of the first magnetic element 210 and the second magnetic element 220 are fixed, and the first magnetic element 210 and the second magnetic element 220 are spaced apart and are oppositely disposed.
In this embodiment, the side of the first magnetic element 210 close to the second magnetic element 220 is an S pole, the side of the first magnetic element 210 facing away from the second magnetic element 220 is an N pole, the side of the second magnetic element 220 close to the first magnetic element 210 is an S pole, and the side of the second magnetic element 220 facing away from the first magnetic element 210 is an N pole.
More specifically, the first magnetic element 210 is located below the second magnetic element 220, i.e., the upper side of the first magnetic element 210 is an S-pole, the lower side of the first magnetic element 210 is an N-pole, the lower side of the second magnetic element 220 is an S-pole, and the upper side of the second magnetic element 220 is an N-pole.
The vibration assembly 300 is disposed inside the case assembly 100, and the vibration assembly 300 includes a diaphragm 310 connected to the case assembly 100, and a flat voice coil 320 connected to the diaphragm 310, the flat voice coil 320 being disposed in the mounting gap 10.
The flat voice coil 320 can form a north-south magnetic pole when energized, the north magnetic pole of the flat voice coil 320 faces the second magnetic member 220 when the south magnetic pole of the flat voice coil 320 faces the first magnetic member 210, and the south magnetic pole of the flat voice coil 320 faces the second magnetic member 220 when the north magnetic pole of the flat voice coil 320 faces the first magnetic member 210.
When the flat voice coil 320 is energized, the direction of the current in the flat voice coil 320 changes, and thus the position of the north and south magnetic poles of the flat voice coil 320 changes.
In this embodiment, the side of the first magnetic element 210 close to the second magnetic element 220 is an S pole, the side of the first magnetic element 210 facing away from the second magnetic element 220 is an N pole, the side of the second magnetic element 220 close to the first magnetic element 210 is an S pole, and the side of the second magnetic element 220 facing away from the first magnetic element 210 is an N pole. When the south magnetic pole of the flat voice coil 320 faces the first magnetic member 210, the north magnetic pole of the flat voice coil 320 faces the second magnetic member 220, and at this time, the flat voice coil 320 moves toward the second magnetic member 220 by the repulsive force of the first magnetic member 210 and the attractive force of the second magnetic member 220. When the north magnetic pole of the flat voice coil 320 faces the first magnetic element 210, the south magnetic pole of the flat voice coil 320 faces the second magnetic element 220, and at this time, the flat voice coil 320 moves toward the first magnetic element 210 under the attractive force of the first magnetic element 210 and the repulsive force of the second magnetic element 220. In this way, the flat voice coil 320 can move towards or away from the first magnetic element 210 under the combined action of the first magnetic element 210 and the second magnetic element 220, so as to drive the vibrating diaphragm 310 to vibrate, the acting force borne by the flat voice coil 320 is large, which is beneficial to improving the electromagnetic conversion efficiency, in addition, the first magnetic element 210 and the second magnetic element 220 can provide a more uniform magnetic field, the flat voice coil 320 is arranged in the installation gap 10 between the first magnetic element 210 and the second magnetic element 220, and most of the flat voice coil 320 is in a uniform linear magnetic field, so that the movement precision of the flat voice coil 320 can be improved, and the distortion is reduced.
The micro-speaker of the present utility model adopts the flat voice coil 320, so that the overall height of the speaker can be reduced, and the occupied space can be reduced.
In other embodiments, the side of the first magnetic element 210 close to the second magnetic element 220 is N-pole, the side of the first magnetic element 210 facing away from the second magnetic element 220 is S-pole, the side of the second magnetic element 220 close to the first magnetic element 210 is N-pole, and the side of the second magnetic element 220 facing away from the first magnetic element 210 is S-pole. In this embodiment, when the flat voice coil 320 is energized, the flat voice coil 320 can also move toward or away from the first magnetic member 210, thereby driving the diaphragm 310 to vibrate.
In one embodiment, as shown in fig. 2, the wires of the flat voice coil 320 form a spiral structure, and the length direction of the axis of the spiral structure is the same as the spacing direction of the first magnetic member 210 and the second magnetic member 220.
Specifically, the spiral structure of the wire of the flat type voice coil 320 is similar to that of the mosquito coil, so that a flattened design of the voice coil can be achieved, and the length direction of the axis of the spiral structure is the same as the spacing direction of the first magnetic member 210 and the second magnetic member 220. In this way, the direction of the current on the flat voice coil 320 can be kept perpendicular to the direction of the magnetic field, which is advantageous for improving the motion accuracy of the flat voice coil 320 and reducing distortion.
As shown in fig. 2 and 3, further, an annular armature 500 is disposed at the inner side of the spiral structure, and the annular armature 500 can concentrate the magnetic induction lines generated by the flat voice coil 320 near the annular armature 500, which is beneficial to improving the stability and precision of the movement of the flat voice coil 320.
In one embodiment, as shown in fig. 2, the outer edge of diaphragm 310 is connected to housing assembly 100, the middle of diaphragm 310 is a planar structure, and flat voice coil 320 is fixed to the middle of diaphragm 310.
Specifically, the middle part of the diaphragm 310 has a planar structure, which is favorable for fixing the flat voice coil 320 and the diaphragm 310, and the middle part of the diaphragm 310 adopts a planar structure, so that the height of the vibration assembly 300 can be reduced, and the height of the micro-horn can be reduced as much as possible.
More specifically, flat voice coil 320 is bonded to diaphragm 310, and bonding flat voice coil 320 to a planar structure facilitates the reliability of the connection of flat voice coil 320 to diaphragm 310.
Wherein, flat voice coil 320 is bonded to diaphragm 310 with an adhesive. Of course, in other embodiments, the flat voice coil 320 and the diaphragm 310 may be bonded together by using a velcro.
In other embodiments, flat voice coil 320 and diaphragm 310 may be soldered or otherwise secured.
As shown in fig. 2 and 4, the housing assembly 100 is provided with the sound outlet 101, so that the diaphragm 310 can transmit sound to the outside through the sound outlet 101 when vibrating.
Specifically, the sound outlet 101 is disposed in front of the diaphragm 310.
In this embodiment, the first magnetic element 210 and the second magnetic element 220 are both columnar structures. Of course, in other embodiments, the first magnetic element 210 and the second magnetic element 220 may have annular, square, or other structures.
For example, as shown in fig. 5, in one embodiment, the first magnetic member 210 and the second magnetic member 220 are both in an annular structure, the first magnetic member 210 is provided with a first middle hole 211, the second magnetic member 220 is provided with a second middle hole 221 coaxially arranged with the first middle hole 211, and the housing assembly 100 is provided with an acoustic outlet hole 101 opposite to the second middle hole 221.
As shown in fig. 2, in one embodiment, the housing assembly 100 is further provided with a tuning hole 103, a tuning net 700 is disposed at the tuning hole 103, and the tuning hole 103 and the tuning net 700 are used for playing a tuning role and improving the sound quality effect.
As shown in fig. 2, in one embodiment, the housing assembly 100 includes a bracket 110, and a cover 120 covering the bracket 110, the first magnetic member 210 is fixed on the inner side of the bracket 110, and the second magnetic member 220 is fixed on the inner side of the cover 120.
Specifically, in this embodiment, the sound outlet 101 is formed on the cover 120, and the tuning hole 103 is formed on the bracket 110.
Further, a fixing ring 400 is connected to the outer periphery of the diaphragm 310, the fixing ring 400 is disposed on the support 110, and the cover 120 is pressed against the fixing ring 400. The cover 120 is used to fix the fixing ring 400 to the bracket 110, thereby achieving the fixation of the diaphragm 310.
In one embodiment, the housing assembly is further provided with a PCB 600, and the housing assembly is provided with a via 102, the via 102 being configured to allow a signal line to pass therethrough, the signal line being capable of connecting the PCB 600 to an internal device of the housing assembly.
An embodiment also relates to an audio device comprising a micro-horn as described above.
The audio device of the present utility model may be a headset, a sound box, etc.
In the audio device of the present utility model, when the flat voice coil 320 is energized, the direction of the current in the flat voice coil 320 is changed, and thus, the position of the north-south magnetic pole of the flat voice coil 320 is changed. When the flat voice coil 320 is energized, the flat voice coil 320 can move towards or away from the first magnetic element 210 under the combined action of the first magnetic element 210 and the second magnetic element 220, so as to drive the vibrating diaphragm 310 to vibrate, the acting force borne by the flat voice coil 320 is large, which is beneficial to improving the electromagnetic conversion efficiency, and the first magnetic element 210 and the second magnetic element 220 can provide a more uniform magnetic field, the flat voice coil 320 is arranged in the installation gap 10 between the first magnetic element 210 and the second magnetic element 220, and most of the flat voice coil 320 is in a uniform linear magnetic field, so that the movement precision of the flat voice coil 320 can be improved, and the distortion is reduced.
It should be noted that, the flat voice coil 320 is adopted in the micro-speaker of the present utility model, so that the overall height of the speaker can be reduced, and the occupied space can be reduced, thereby reducing the volume of the audio device, and further miniaturizing the audio device.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A micro-horn, comprising:
a housing assembly;
the magnetic assembly is arranged in the shell assembly and comprises a first magnetic piece and a second magnetic piece which is arranged at intervals with the first magnetic piece and is opposite to the first magnetic piece, an installation gap is formed between the first magnetic piece and the second magnetic piece, and the magnetic pole of one side, close to the second magnetic piece, of the first magnetic piece is identical to the magnetic pole of one side, close to the first magnetic piece, of the second magnetic piece; and
the vibration assembly is arranged in the shell assembly and comprises a vibrating diaphragm connected with the shell assembly and a flat voice coil connected to the vibrating diaphragm, and the flat voice coil is arranged in the installation gap;
the flat voice coil can form a north-south magnetic pole when being electrified, the north magnetic pole of the flat voice coil faces the second magnetic piece when the south magnetic pole of the flat voice coil faces the first magnetic piece, and the south magnetic pole of the flat voice coil faces the second magnetic piece when the north magnetic pole of the flat voice coil faces the first magnetic piece.
2. The micro horn according to claim 1, wherein the wire of the flat voice coil forms a spiral structure, and a length direction of an axis of the spiral structure is the same as a spacing direction of the first magnetic member and the second magnetic member.
3. The micro-horn according to claim 2, wherein the helical structure is provided with an annular armature on the inside.
4. The micro horn according to claim 1, wherein an outer edge of the diaphragm is connected to the housing assembly, a middle portion of the diaphragm is of a planar structure, and the flat voice coil is fixed to the middle portion of the diaphragm.
5. The micro-horn of claim 4, wherein the flat voice coil is bonded to the diaphragm.
6. The micro-horn of claim 1, wherein the housing assembly is provided with an acoustic port.
7. The micro horn according to claim 1, wherein the first magnetic member is provided with a first middle hole, the second magnetic member is provided with a second middle hole coaxially arranged with the first middle hole, and the housing assembly is provided with a sound outlet hole opposite to the second middle hole.
8. The micro horn according to claim 1, wherein the housing assembly comprises a bracket and a cover body covering the bracket, the first magnetic member is fixed on the inner side of the bracket, and the second magnetic member is fixed on the inner side of the cover body.
9. The micro horn according to claim 8, wherein a fixing ring is connected to an outer periphery of the diaphragm, the fixing ring is disposed on the support, and the cover presses on the fixing ring.
10. An audio device comprising a micro-speaker according to any of the preceding claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320223002.1U CN219876071U (en) | 2023-01-17 | 2023-01-17 | Micro-speaker and audio device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320223002.1U CN219876071U (en) | 2023-01-17 | 2023-01-17 | Micro-speaker and audio device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219876071U true CN219876071U (en) | 2023-10-20 |
Family
ID=88321436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320223002.1U Active CN219876071U (en) | 2023-01-17 | 2023-01-17 | Micro-speaker and audio device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219876071U (en) |
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2023
- 2023-01-17 CN CN202320223002.1U patent/CN219876071U/en active Active
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