CN220965138U - Miniature loudspeaker - Google Patents
Miniature loudspeaker Download PDFInfo
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- CN220965138U CN220965138U CN202322493874.2U CN202322493874U CN220965138U CN 220965138 U CN220965138 U CN 220965138U CN 202322493874 U CN202322493874 U CN 202322493874U CN 220965138 U CN220965138 U CN 220965138U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 230000001052 transient effect Effects 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 4
- 229910052742 iron Inorganic materials 0.000 abstract 2
- 239000000243 solution Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The utility model discloses a miniature loudspeaker, which comprises a basin frame, a voice coil assembly, a first vibrating diaphragm assembly, a vibrating assembly and a magnetic circuit assembly, wherein the voice coil assembly comprises a first voice coil and a second voice coil which are connected, the first voice coil and the second voice coil are respectively and electrically connected with an external power supply, and the first voice coil and the second voice coil are mutually and independently controlled; the first vibrating diaphragm assembly is connected with the basin stand and the voice coil assembly; the vibration assembly comprises a second vibration film assembly and a third voice coil, and the second vibration film assembly is connected with the third voice coil and the basin frame; the magnetic circuit assembly is connected with the basin frame and comprises a yoke iron and a side magnetic structure, a hollow convex hull is arranged in the central area of the yoke iron, the side magnetic structure is arranged around the hollow convex hull, and a first magnetic gap for the voice coil assembly to move is formed at the inner side of the side magnetic structure; an inner magnetic steel is arranged in the hollow convex hull, and a second magnetic gap for the third voice coil to move is formed between the inner magnetic steel and the inner wall of the hollow convex hull. The micro loudspeaker has the advantages of novel structure, good electrical control performance and good transient performance.
Description
Technical Field
The utility model relates to the technical field of electroacoustic converters, in particular to a miniature loudspeaker.
Background
The micro-speaker is widely applied to portable electronic devices such as mobile phones, notebook computers, hearing aids and the like. With the rapid development of these portable electronic devices, the quality requirements of the miniature electroacoustic devices applied therein are increasing.
In the working process of the traditional micro-speaker, resonance sometimes occurs, so that nonlinear vibration occurs, and the electrical control performance of the traditional micro-speaker is poor and cannot be adjusted, so that the transient performance of the micro-speaker is poor.
Disclosure of utility model
The utility model mainly aims to provide a miniature loudspeaker with a novel structure, and aims to solve the problem that the traditional miniature loudspeaker is easy to generate nonlinear vibration and causes poor transient performance.
In order to solve the technical problems, the utility model adopts the following technical scheme: a micro-speaker, comprising:
a basin stand;
The voice coil assembly comprises a first voice coil and a second voice coil which are connected, the first voice coil and the second voice coil are respectively and electrically connected with an external power supply, and the first voice coil and the second voice coil are mutually independently controlled;
the first vibrating diaphragm assembly is connected with the basin stand and the voice coil assembly;
The vibration assembly comprises a second vibrating diaphragm assembly and a third voice coil, and the second vibrating diaphragm assembly is connected with the third voice coil and the basin frame;
The magnetic circuit assembly is connected with the basin frame and comprises a yoke and a side magnetic structure, a hollow convex hull protruding towards the direction close to the first vibrating diaphragm assembly is arranged in the central area of the yoke, the side magnetic structure is arranged around the hollow convex hull, and a first magnetic gap for the voice coil assembly to move is formed on the inner side of the side magnetic structure; an inner magnetic steel is arranged in the hollow convex hull, and a second magnetic gap for the third voice coil to move is formed between the inner magnetic steel and the inner wall of the hollow convex hull.
In an embodiment, the magnetic circuit assembly further comprises a central magnetic structure, and the central magnetic structure is arranged on the top surface of the hollow convex hull.
In one embodiment, the central magnetic structure comprises a central magnetic steel and a central washer which are connected in a stacked manner from bottom to top; the side magnetic structure comprises a plurality of groups of magnetic components, wherein the magnetic components comprise a first side magnetic steel, a first side washer, a second side magnetic steel and a second Bian Huasi which are sequentially laminated and connected from bottom to top; the first voice coil is located above the second voice coil, the first magnetic gap comprises a first gap and a second gap which are communicated with each other, the first gap is formed between the central magnetic structure and the side magnetic structure, the second gap is formed between the hollow convex hull and the side magnetic structure, the first voice coil is arranged corresponding to the first gap, and the second voice coil is arranged corresponding to the second gap.
In an embodiment, the first voice coil and the second voice coil are respectively rectangular frame-shaped, the length of the first voice coil is smaller than that of the second voice coil, and the width of the first voice coil is smaller than that of the second voice coil.
In an embodiment, two adjacent second Bian Huasi are connected by a connecting arm, and a plurality of second Bian Huasi are connected by the connecting arm to form a ring frame structure.
In an embodiment, the voice coil assembly further comprises a centering support piece, and the centering support piece is connected with the voice coil assembly and the basin frame.
In an embodiment, the centering support piece comprises an inner mounting portion, a cantilever portion and an outer mounting portion, wherein the top surface of the inner mounting portion is connected with the bottom surface of the first voice coil, the bottom surface of the inner mounting portion is connected with the top surface of the second voice coil, and the outer mounting portion is fixed on the basin frame.
In an embodiment, a conducting circuit is arranged on the centering support, the conducting circuit comprises a first bonding pad, a conductive wire and a second bonding pad which are sequentially connected, the first bonding pad is arranged on the inner mounting part, and the second bonding pad is arranged on the outer mounting part and is exposed; the number of the conducting circuits is four, two first bonding pads are connected and conducted with the first voice coil, and the other two first bonding pads are connected and conducted with the second voice coil.
In one embodiment, the inner mounting portion is in the shape of a ring frame.
In one embodiment, the bottom surface of the inner magnetic steel is provided with an inner washer.
The utility model has the beneficial effects that: the miniature loudspeaker is novel in structure, the first voice coil and the second voice coil are independently controlled respectively, good electric control performance is achieved, under normal conditions, the first voice coil and the second voice coil move in the same direction, so that stronger driving force is provided for the first vibrating diaphragm assembly, when the external detection module detects that the miniature loudspeaker is resonant or resonates, the external power supply can control current of the first voice coil or the second voice coil to reversely flow, thus nonlinear phenomenon of the miniature loudspeaker is improved, the miniature loudspeaker is enabled to have better transient performance, or the vibration assembly is driven to reversely do work, so that vibration of the miniature loudspeaker brought to the whole loudspeaker is weakened.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a cross-sectional view of a micro-speaker according to a first embodiment of the present utility model;
Fig. 2 is a schematic diagram of a yoke in a micro speaker according to an embodiment of the present utility model;
fig. 3 is a schematic structural diagram of a centering support in a micro speaker according to an embodiment of the present utility model.
Reference numerals illustrate:
1. A basin stand;
21. A first voice coil; 22. a second voice coil; 23. a third voice coil;
31. a first diaphragm assembly; 32. a second diaphragm assembly;
4. a yoke; 41. hollow convex hulls; 42. a top plate;
5. a central magnetic structure; 51. a center magnetic steel; 52. a central washer;
6. A side magnetic structure; 61. a first side magnetic steel; 62. a first side washer; 63. a second side magnetic steel; 64. second Bian Huasi;
71. A first magnetic gap; 72. a second magnetic gap;
8. Centering support pieces; 81. an inner mounting portion; 82. a cantilever portion; 83. an outer mounting portion;
91. Internal magnetic steel; 92. an internal washer.
Detailed Description
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, in the embodiment of the present utility model, directional indications such as up, down, left, right, front, and rear … … are referred to merely for explaining a relative positional relationship, a movement condition, and the like between the components in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indication is changed accordingly.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.
In addition, if the meaning of "and/or" is presented throughout this document to include three parallel schemes, taking "and/or" as an example, including a scheme, or a scheme that is satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
Example 1
Referring to fig. 1 to 3, a first embodiment of the present utility model is as follows: a micro loudspeaker can be applied to electronic equipment such as mobile phones, intelligent watches, notebook computers and the like.
The miniature loudspeaker comprises a basin frame 1, a voice coil assembly, a first vibrating diaphragm assembly 31, a vibrating assembly and a magnetic circuit assembly, wherein the first vibrating diaphragm assembly 31 is connected with the basin frame 1 and the voice coil assembly, the voice coil assembly comprises a first voice coil 21 and a second voice coil 22 which are connected with each other, the first voice coil 21 and the second voice coil 22 are respectively and electrically connected with an external power supply, and the first voice coil 21 and the second voice coil 22 are mutually independently controlled; the vibration assembly comprises a second vibration film assembly 32 and a third voice coil 23, and the second vibration film assembly 32 is connected with the third voice coil 23 and the basin frame 1; the magnetic circuit assembly is connected with the basin frame 1, the magnetic circuit assembly comprises a yoke 4 and a side magnetic structure 6, a hollow convex hull 41 protruding towards the direction close to the first vibrating diaphragm assembly 31 is arranged in the central area of the yoke 4, the side magnetic structure 6 is arranged around the hollow convex hull 41, and a first magnetic gap 71 for the voice coil assembly to move is formed on the inner side of the side magnetic structure 6; an internal magnetic steel 91 is arranged in the hollow convex hull 41, and a second magnetic gap 72 for the third voice coil 23 to move is formed between the internal magnetic steel 91 and the inner wall of the hollow convex hull 41. Optionally, the hollow convex hull 41 is stamped and formed.
Optionally, the bottom surface of the inner magnetic steel 91 is provided with an inner washer 92, and the inner washer 92 is substantially aligned with the yoke 4, and it is also possible that the bottom surface of the inner washer 92 protrudes slightly from the bottom surface of the yoke 4.
Specifically, the basin stand 1 comprises a first support and a second support, the first support and/or the second support are/is connected with the magnetic circuit assembly, the first vibrating diaphragm assembly 31 is connected with the first support, and the second vibrating diaphragm assembly 32 is connected with the second support. More specifically, the bottom surface of the second bracket is disposed lower than the bottom surface of the yoke 4, so that a sufficient space is provided for the vibration of the second diaphragm assembly 32.
In order to enhance the magnetic field strength of the micro-speaker and improve the performance of the micro-speaker, it is preferable that the magnetic circuit assembly further includes a central magnetic structure 5, and the central magnetic structure 5 is disposed on the top surface of the hollow convex hull 41.
The central magnetic structure 5 comprises a central magnetic steel 51 and a central washer 52 which are connected in a laminated manner from bottom to top; the side magnetic structure 6 comprises a plurality of groups of magnetic components, the magnetic components comprise a first side magnetic steel 61, a first side washer 62, a second side magnetic steel 63 and a second Bian Huasi and 64 which are sequentially laminated and connected from bottom to top, optionally, the number of the magnetic components is four, and the four sides of the hollow convex hull 41 are respectively provided with the magnetic components correspondingly; the first voice coil 21 is located above the second voice coil 22, the first magnetic gap 71 includes a first gap and a second gap that are communicated, the first gap is formed between the central magnetic structure 5 and the side magnetic structure 6, the second gap is formed between the hollow convex hull 41 and the side magnetic structure 6, the first voice coil 21 is disposed corresponding to the first gap, and the second voice coil 22 is disposed corresponding to the second gap. In detail, the top plate 42 of the hollow convex hull 41 is substantially aligned with the first side washer 62, and at this time, the top plate 42 of the hollow convex hull 41 can exert a magnetic conduction effect like a washer, so that no washer structure is required to be additionally arranged between the central magnetic steel 51 and the inner magnetic steel 91; the central washer 52 is generally aligned with the second Bian Huasi a 64. In the micro-speaker of the embodiment, the magnetic circuit assembly can form a plurality of magnetic loops, and the voice coil assembly can be driven to move more efficiently.
The first voice coil 21 and the second voice coil 22 are respectively rectangular, the length of the first voice coil 21 is smaller than that of the second voice coil 22, and the width of the first voice coil 21 is smaller than that of the second voice coil 22. Preferably, the first voice coil 21 and the second voice coil 22 are concentrically arranged.
In order to facilitate the processing and assembly and improve the magnetic circuit of the micro-speaker, it is preferable that two adjacent second Bian Huasi 64 are connected by a connecting arm, a plurality of second Bian Huasi 64 are connected by the connecting arm to form a ring frame structure, and it is preferable that the second Bian Huasi 64 and the connecting arm are integrally formed into an integral structure. In this embodiment, the second Bian Huasi and the basin stand 1 are injection molded as an integral structure.
The micro-speaker further comprises a centering support piece 8, and the centering support piece 8 is connected with the voice coil assembly and the basin frame 1. Specifically, the centering support 8 includes an inner mounting portion 81, a cantilever portion 82, and an outer mounting portion 83, wherein the top surface of the inner mounting portion 81 is connected to the bottom surface of the first voice coil 21, the bottom surface of the inner mounting portion 81 is connected to the top surface of the second voice coil 22, and the outer mounting portion 83 is fixed to the frame 1. The centering support sheet 8 can play a role in correcting deviation, and can effectively improve the polarization and rolling vibration phenomena of the voice coil assembly.
Optionally, the centering support piece 8 is provided with a conducting circuit, the conducting circuit includes a first bonding pad, a conducting wire and a second bonding pad which are sequentially connected, the first bonding pad is arranged on the inner mounting portion 81, and the second bonding pad is arranged on the outer mounting portion 83 and is exposed; the number of the conducting lines is four, two first bonding pads are connected and conducted with the first voice coil 21, and the other two first bonding pads are connected and conducted with the second voice coil 22. In other embodiments, the first voice coil 21/the second voice coil 22 may be electrically connected to an external power source through a suspension wire. The first voice coil 21 and the second voice coil 22 are different in size, and the welding positions of the first voice coil 21 and the first welding pad on the centering support 8 can be staggered, so that welding of the lead wire and the first welding pad is facilitated.
Preferably, the inner mounting portion 81 is in a ring frame shape, so that not only the structural stability of the centering support piece 8 can be improved and the transportation and assembly of the centering support piece 8 are facilitated, but also the bonding stability of the centering support piece 8 with the first voice coil 21 and the second voice coil 22 can be ensured. In this embodiment, the cantilever portions 82 are connected to four corners of the inner mounting portion 81, respectively, and the second pads are connected to each cantilever portion 82.
The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. A miniature loudspeaker, characterized by: comprising
A basin stand;
The voice coil assembly comprises a first voice coil and a second voice coil which are connected, the first voice coil and the second voice coil are respectively and electrically connected with an external power supply, and the first voice coil and the second voice coil are mutually independently controlled;
the first vibrating diaphragm assembly is connected with the basin stand and the voice coil assembly;
The vibration assembly comprises a second vibrating diaphragm assembly and a third voice coil, and the second vibrating diaphragm assembly is connected with the third voice coil and the basin frame;
The magnetic circuit assembly is connected with the basin frame and comprises a yoke and a side magnetic structure, a hollow convex hull protruding towards the direction close to the first vibrating diaphragm assembly is arranged in the central area of the yoke, the side magnetic structure is arranged around the hollow convex hull, and a first magnetic gap for the voice coil assembly to move is formed on the inner side of the side magnetic structure; an inner magnetic steel is arranged in the hollow convex hull, and a second magnetic gap for the third voice coil to move is formed between the inner magnetic steel and the inner wall of the hollow convex hull.
2. A micro-speaker as claimed in claim 1, wherein: the magnetic circuit assembly further comprises a central magnetic structure, and the central magnetic structure is arranged on the top surface of the hollow convex hull.
3. A micro-speaker as claimed in claim 2, wherein: the central magnetic structure comprises central magnetic steel and a central washer which are connected in a laminated manner from bottom to top; the side magnetic structure comprises a plurality of groups of magnetic components, wherein the magnetic components comprise a first side magnetic steel, a first side washer, a second side magnetic steel and a second Bian Huasi which are sequentially laminated and connected from bottom to top; the first voice coil is located above the second voice coil, the first magnetic gap comprises a first gap and a second gap which are communicated with each other, the first gap is formed between the central magnetic structure and the side magnetic structure, the second gap is formed between the hollow convex hull and the side magnetic structure, the first voice coil is arranged corresponding to the first gap, and the second voice coil is arranged corresponding to the second gap.
4. A micro-speaker as claimed in claim 3, wherein: the first voice coil and the second voice coil are respectively rectangular frame-shaped, the length of the first voice coil is smaller than that of the second voice coil, and the width of the first voice coil is smaller than that of the second voice coil.
5. A micro-speaker as claimed in claim 3, wherein: two adjacent second Bian Huasi are connected by a connecting arm, and a plurality of second Bian Huasi are connected by the connecting arm to form a ring frame structure.
6. A micro-speaker as claimed in claim 3, wherein: the voice coil assembly is characterized by further comprising a centering support piece, wherein the centering support piece is connected with the voice coil assembly and the basin frame.
7. A micro-speaker as claimed in claim 6, wherein: the centering support piece comprises an inner mounting portion, a cantilever portion and an outer mounting portion, the top surface of the inner mounting portion is connected with the bottom surface of the first voice coil, the bottom surface of the inner mounting portion is connected with the top surface of the second voice coil, and the outer mounting portion is fixed on the basin frame.
8. A micro-speaker as claimed in claim 7, wherein: the centering support piece is provided with a conducting circuit, the conducting circuit comprises a first bonding pad, a conductive wiring and a second bonding pad which are sequentially connected, the first bonding pad is arranged on the inner mounting part, and the second bonding pad is arranged on the outer mounting part and is exposed; the number of the conducting circuits is four, two first bonding pads are connected and conducted with the first voice coil, and the other two first bonding pads are connected and conducted with the second voice coil.
9. A micro-speaker as claimed in claim 8, wherein: the inner mounting part is in a ring frame shape.
10. A micro-speaker as claimed in claim 1, wherein: the bottom surface of inside magnet steel is equipped with inside washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322493874.2U CN220965138U (en) | 2023-09-13 | 2023-09-13 | Miniature loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322493874.2U CN220965138U (en) | 2023-09-13 | 2023-09-13 | Miniature loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220965138U true CN220965138U (en) | 2024-05-14 |
Family
ID=90982027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322493874.2U Active CN220965138U (en) | 2023-09-13 | 2023-09-13 | Miniature loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220965138U (en) |
-
2023
- 2023-09-13 CN CN202322493874.2U patent/CN220965138U/en active Active
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