CN223666470U - A miniature loudspeaker - Google Patents
A miniature loudspeakerInfo
- Publication number
- CN223666470U CN223666470U CN202423061848.3U CN202423061848U CN223666470U CN 223666470 U CN223666470 U CN 223666470U CN 202423061848 U CN202423061848 U CN 202423061848U CN 223666470 U CN223666470 U CN 223666470U
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- Prior art keywords
- magnetic structure
- side magnetic
- micro
- speaker
- cantilever
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Abstract
本实用新型公开了一种微型扬声器，包括盆架、磁路组件、音圈、定心支片和振膜组件，磁路组件包括轭铁和分别设于轭铁上的中心磁结构及边磁结构，边磁结构围绕中心磁结构设置，边磁结构与中心磁结构之间形成磁间隙，边磁结构具有连通其外侧与磁间隙的口部；音圈对应于磁间隙设置；定心支片包括外固定部、悬臂部、内固定部及延伸部，悬臂部位于边磁结构的外侧，悬臂部的一端连接外固定部，外固定部连接盆架，悬臂部的另一端的一侧连接内固定部，悬臂部的另一端的另一侧连接延伸部，内固定部伸入口部并连接音圈；振膜组件包括音膜和球顶，音膜连接球顶与盆架，球顶连接音圈，球顶具有连接延伸部的支撑臂。本微型扬声器结构稳定，性能表现佳。
This utility model discloses a miniature loudspeaker, including a frame, a magnetic circuit assembly, a voice coil, a centering support, and a diaphragm assembly. The magnetic circuit assembly includes a yoke and a central magnetic structure and a peripheral magnetic structure respectively disposed on the yoke. The peripheral magnetic structure is arranged around the central magnetic structure, forming a magnetic gap between the peripheral magnetic structure and the central magnetic structure. The peripheral magnetic structure has an opening connecting its outer side to the magnetic gap. The voice coil is disposed corresponding to the magnetic gap. The centering support includes an outer fixing part, a cantilever part, an inner fixing part, and an extension part. The cantilever part is located outside the peripheral magnetic structure. One end of the cantilever part is connected to the outer fixing part, which is connected to the frame. One side of the other end of the cantilever part is connected to the inner fixing part, and the other side of the other end of the cantilever part is connected to the extension part. The inner fixing part extends into the opening and connects to the voice coil. The diaphragm assembly includes a diaphragm and a dome. The diaphragm connects the dome to the frame, and the dome connects to the voice coil. The dome has a support arm connecting to the extension part. This miniature loudspeaker has a stable structure and excellent 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 requirements of the thickness of the micro-speakers applied therein are also becoming more and more stringent, and the internal space of the micro-speakers with smaller thickness is becoming smaller, which undoubtedly results in the total volume of the magnetic steel becoming smaller, so that the performance of the micro-speakers is degraded to some extent.
In addition, in the prior art, the centering support piece of the conventional ultra-linear micro-speaker is positioned at four corners of the voice coil, and enough space is reserved for the centering support piece of the micro-speaker, so that the volume of the side magnetic steel is greatly reduced, and the performance of the speaker is seriously affected. In order to improve the problem, in some micro-speakers, most of the cantilever portion of the centering support is located outside the side magnetic structure, and the inner fixing portion of the centering support passes through the space reserved by the side magnetic structure to connect the voice coil, so that the volume of the side magnetic structure can be set larger, but the inner fixing portion of the centering support is relatively slender, so that the structural strength is insufficient, the supporting effect on the vibration component is reduced, and the structural stability of the micro-speaker is affected.
Disclosure of utility model
The utility model solves the technical problem of providing the high-performance micro-speaker with stable structure.
In order to solve the technical problems, the technical scheme adopted by the utility model is that the miniature loudspeaker comprises:
A basin stand;
The magnetic circuit assembly comprises a yoke, a central magnetic structure and a side magnetic structure, wherein the central magnetic structure and the side magnetic structure are respectively arranged on the yoke, the side magnetic structure is arranged around the central magnetic structure, a magnetic gap is formed between the side magnetic structure and the central magnetic structure, and the side magnetic structure is provided with a mouth part for communicating the outer side of the side magnetic structure with the magnetic gap;
a voice coil disposed corresponding to the magnetic gap;
The centering support piece comprises an outer fixing part, a cantilever part, an inner fixing part and an extending part, wherein the cantilever part is positioned at the outer side of the side magnetic structure, one end of the cantilever part is connected with the outer fixing part, the outer fixing part is connected with the basin frame, one side of the other end of the cantilever part is connected with the inner fixing part, the other side of the other end of the cantilever part is connected with the extending part, and the inner fixing part stretches into the opening and is connected with the voice coil;
The vibrating diaphragm assembly comprises a sound membrane and a ball top, the sound membrane is connected with the ball top and the basin frame, the ball top is connected with the voice coil, and the ball top is provided with a supporting arm connected with the extension part.
In an embodiment, each of the inner fixing portions is connected to two cantilever portions symmetrically disposed.
In one embodiment, the cantilever portion is U-shaped.
In an embodiment, the side magnetic structure comprises two side magnetic parts which are oppositely arranged, the side magnetic parts are concave, and the opening is formed between the end parts of the two side magnetic parts.
In an embodiment, the outer fixing portion is in a ring frame shape, and two opposite side edges of the outer fixing portion are respectively connected with the cantilever portions.
In an embodiment, the side magnetic part includes side magnetic steel and Bian Huasi, the side magnetic steel connects the yoke and the Bian Huasi, and the Bian Huasi is connected with the basin frame.
In an embodiment, the side magnetic steel is of a monolithic structure, or of a combined structure formed by combining a plurality of sub magnetic steels.
In an embodiment, the Bian Huasi of the two side magnetic portions are connected by a connecting portion to form a unitary structure.
In one embodiment, the voice coil is racetrack shaped and the central magnetic structure is kidney shaped in a top view.
In one embodiment, the support arm is provided with a reinforcing concave rib.
The utility model has the beneficial effects that the cantilever part of the centering support piece is positioned at the outer side of the side magnetic structure, so that the opening part of the side magnetic structure can be arranged to be long and narrow, thereby improving the total volume of the side magnetic structure and further improving the performance of the micro-speaker; because need set up the pad that switches on with the voice coil loudspeaker voice coil on the internal fixation portion, the existence of extension just provides hookup location for the support arm, and the support arm of hookup extension can strengthen the structural strength of the regional near internal fixation portion of centering piece, reduces the damaged risk of tearing of centering piece, does benefit to improving micro-speaker's structural stability, in addition, because the setting of support arm, centering piece can support vibrating diaphragm assembly better to improved micro-speaker's vibration intensity, do benefit to further improvement micro-speaker's performance.
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 structural diagram of a portion of a micro-speaker according to a first embodiment of the present utility model.
Reference numerals illustrate:
1. a basin stand;
2. Magnetic circuit assembly, 21, yoke, 22, central magnetic structure, 23, side magnetic structure, 231, side magnetic part, 2311, side magnetic steel, 2312, bian Huasi, 2313, connecting part, 24 and opening;
3. A voice coil;
4. centering support piece, 41, outer fixing part, 42, cantilever part, 43, inner fixing part, 44, extension part;
5. diaphragm assembly 51, sound membrane 52, ball top 521, body 522 and supporting arm.
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, and the directional indication is merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture such as that shown in the drawings, and if the specific posture is changed, the directional indication is correspondingly changed.
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, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between 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 and 2, an embodiment of the utility model is a micro-speaker, comprising a frame 1, a magnetic circuit assembly 2, a voice coil 3, a centering support 4 and a diaphragm assembly 5, wherein the magnetic circuit assembly 2 comprises a yoke 21, a central magnetic structure 22 and a side magnetic structure 23 which are respectively arranged on the yoke 21, the side magnetic structure 23 is arranged around the central magnetic structure 22, a magnetic gap is formed between the side magnetic structure 23 and the central magnetic structure 22, the side magnetic structure 23 is provided with a mouth 24 which is communicated with the outside of the side magnetic structure 23 and the magnetic gap, the centering support 4 comprises an outer fixing part 41, a cantilever part 42, an inner fixing part 43 and an extension part 44, the cantilever part 42 is positioned on the outside of the side magnetic structure 23, one end of the cantilever part 42 is connected with the outer fixing part 41, one side of the other end of the cantilever part 42 is connected with the inner fixing part 43, the other end of the cantilever part 42 is connected with the extension part 44, the inner fixing part 43 is connected with the diaphragm part 522, the top surface of the cantilever part 522 is provided with the diaphragm assembly 522, the top part 522 is provided with the diaphragm assembly 52, the top surface of the diaphragm assembly is provided with the diaphragm assembly 52, the top diaphragm assembly is provided with the diaphragm 52, the top diaphragm assembly is provided with the top diaphragm 52, and the diaphragm 52 is provided with the top diaphragm 52, the top diaphragm 52 is provided with the top diaphragm 52 and the diaphragm 52 is connected with the top diaphragm 52, and the diaphragm 52 is provided with the top diaphragm 52.
Specifically, the center area of the sound membrane 51 is hollowed out, the dome 52 includes a body 521 and a supporting arm 522, the body 521 is connected with the sound membrane 51 and covers the hollowed-out area of the sound membrane 51, the voice coil 3 is connected with the body 521, and preferably, the supporting arm 522 is formed by bending a part of the area of the body 521.
In order to balance the stress of the centering support 4, each of the inner fixing portions 43 is connected to two symmetrically arranged cantilever portions 42, in this embodiment, the cantilever portions 42 are U-shaped, and in other embodiments, the cantilever portions 42 may be other shapes.
Specifically, the side magnetic structure 23 includes two side magnetic parts 231 disposed opposite to each other, the side magnetic parts 231 are concave, and the mouth 24 is formed between the ends of the two side magnetic parts 231, that is, in this embodiment, the side magnetic structure 23 has two mouth 24.
Alternatively, the outer fixing portion 41 is in a ring frame shape, and at this time, two opposite sides of the outer fixing portion 41 are respectively connected with the cantilever portion 42.
The side magnetic part 231 comprises side magnetic steels 2311 and Bian Huasi 2312, the side magnetic steel 2311 is connected with the yoke 21 and the Bian Huasi 2312, the Bian Huasi 2312 is connected with the basin frame 1, in this embodiment, the side magnetic steel 2311 is of an integral structure, in other embodiments, the side magnetic steel 2311 is of a combined structure formed by combining a plurality of sub magnetic steels, and at this time, the sub magnetic steels are close to each other to form a concave shape.
In order to facilitate the production and assembly of the micro-speaker, the Bian Huasi of the two side magnetic portions 231 are connected through the connection portions 2313 to form an integral structure, that is, at this time, the two side washer 2312 and the two connection portions 2313 form a ring frame structure, preferably, the ring frame structure and the basin frame 1 are injection molded to form an integral structure. In this embodiment, the external fixing portion 41 is indirectly connected to the basin stand 1 through the ring frame structure.
In the prior art, the voice coil 3 is often rectangular frame-shaped, and due to the influence of a production stretching process, the dimensional accuracy deviation of four corners of the voice coil 3 is larger, so that the corners of the central magnetic structure 22 of the micro-speaker need to be avoided to a certain extent, so that the volume of the central magnetic structure 22 cannot be maximized, in the embodiment, the voice coil 3 is runway-shaped, the voice coil 3 is arranged into the runway shape, compared with the voice coil 3 with the rectangular frame shape, the size controllability is higher, the avoidance of the central magnetic structure 22 to the voice coil 3 is reduced, the internal space of the micro-speaker is saved, the whole volume of the magnetic circuit assembly 2 of the micro-speaker can be set to be larger, and the purpose of further improving the performance of the micro-speaker is achieved; accordingly, the central magnetic structure 22 is kidney-shaped in a top view.
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 micro speaker is characterized by comprising
A basin stand;
The magnetic circuit assembly comprises a yoke, a central magnetic structure and a side magnetic structure, wherein the central magnetic structure and the side magnetic structure are respectively arranged on the yoke, the side magnetic structure is arranged around the central magnetic structure, a magnetic gap is formed between the side magnetic structure and the central magnetic structure, and the side magnetic structure is provided with a mouth part for communicating the outer side of the side magnetic structure with the magnetic gap;
a voice coil disposed corresponding to the magnetic gap;
The centering support piece comprises an outer fixing part, a cantilever part, an inner fixing part and an extending part, wherein the cantilever part is positioned at the outer side of the side magnetic structure, one end of the cantilever part is connected with the outer fixing part, the outer fixing part is connected with the basin frame, one side of the other end of the cantilever part is connected with the inner fixing part, the other side of the other end of the cantilever part is connected with the extending part, and the inner fixing part stretches into the opening and is connected with the voice coil;
The vibrating diaphragm assembly comprises a sound membrane and a ball top, the sound membrane is connected with the ball top and the basin frame, the ball top is connected with the voice coil, and the ball top is provided with a supporting arm connected with the extension part.
2. The micro-speaker of claim 1, wherein each of the inner fixing portions is connected to two cantilever portions symmetrically disposed.
3. The micro-speaker of claim 2, wherein the cantilever portion has a U-shape.
4. The micro-speaker of claim 1, wherein the side magnetic structure comprises two side magnetic parts arranged opposite to each other, the side magnetic parts are in a concave shape, and the opening is formed between the ends of the two side magnetic parts.
5. The micro-speaker of claim 4, wherein the outer fixing portion is in a shape of a ring frame, and opposite sides of the outer fixing portion are respectively connected with the cantilever portions.
6. The micro-speaker of claim 4, wherein the side magnetic part comprises side magnetic steel and Bian Huasi, the side magnetic steel connects the yoke and Bian Huasi, and the Bian Huasi is connected with the frame.
7. The micro-speaker of claim 6, wherein the side magnetic steel is of a monolithic structure or of a combined structure formed by combining a plurality of sub-magnetic steels.
8. The micro-speaker of claim 6, wherein the Bian Huasi of the two side magnetic portions are connected by a connecting portion to form a unitary structure.
9. The micro-speaker of claim 1, wherein the voice coil has a racetrack shape and the central magnetic structure has a kidney shape in a plan view.
10. The micro-speaker of claim 1, wherein the support arm is provided with a reinforcing rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202423061848.3U CN223666470U (en) | 2024-12-11 | 2024-12-11 | A miniature loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202423061848.3U CN223666470U (en) | 2024-12-11 | 2024-12-11 | A miniature loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223666470U true CN223666470U (en) | 2025-12-12 |
Family
ID=97926059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202423061848.3U Active CN223666470U (en) | 2024-12-11 | 2024-12-11 | A miniature loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223666470U (en) |
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2024
- 2024-12-11 CN CN202423061848.3U patent/CN223666470U/en active Active
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