CN219999596U - Miniature loudspeaker - Google Patents

Abstract

The utility model discloses a miniature loudspeaker, which comprises a basin frame, a yoke, side magnetic steel and Bian Huasi, wherein the side magnetic steel is arranged on the yoke, bian Huasi is connected with the basin frame and the side magnetic steel, and Bian Huasi is provided with a turned edge turned towards the direction close to the yoke. This miniature loudspeaker simple structure, novel, add the turn-ups that turns over towards being close to the yoke direction on Bian Hua span, when basin frame and/or yoke take place to warp, the turn-ups can form the conflict with the yoke to let basin frame and yoke support each other, and then improve basin frame and/or yoke's deformation, be favorable to improving miniature loudspeaker's structural stability, reduced miniature loudspeaker product effectively and fallen the probability that takes place out of range deformation when the reliability test, increased miniature loudspeaker product's reliability allowance. In addition, the flanging can also play a role in magnetic conduction to a certain extent, so that the performance of the micro-speaker is improved. Compared with the prior micro-speaker, the micro-speaker has small structural variation and is suitable for large-scale popularization and application.

Description

Miniature loudspeaker

Technical Field

The utility model relates to the technical field of electroacoustic transducers, 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 consumer upgrades, portable electronic devices place increasingly stringent demands on the reliability and performance of micro-speakers, requiring practitioners to consider achieving the best performance and reliability at a fixed size when designing micro-speakers.

The deformation of the frame and yoke is easy to occur when part of the micro-speaker falls, and particularly for the micro-speaker product with a three-magnet structure, the yoke/back frame in the area is not effectively supported because a larger gap is formed between one side of the yoke, on which the side magnetic steel is not arranged, and the frame, so that the deformation is easy to occur.

Disclosure of Invention

The utility model solves the technical problems that: a micro speaker with stable structure is provided.

In order to solve the technical problems, the utility model adopts the following technical scheme: a micro-speaker, comprising:

a basin stand;

the yoke is provided with a magnetic field,

the side magnetic steel is arranged on the yoke iron;

bian Huasi the Bian Huasi is used for connecting the basin frame with the edge magnetic steel, and the Bian Huasi is provided with a flanging turned towards the direction close to the yoke.

Further, a gap is formed between the flange and the yoke.

Further, the bottom end of the flange contacts the yoke.

Further, the flange is welded with the yoke.

Further, the magnetic steel coil is characterized by further comprising a rectangular central magnetic steel, wherein the central magnetic steel is arranged on the yoke, the outer sides of one group of opposite sides of the central magnetic steel are respectively provided with the side magnetic steel, and the outer sides of the other group of opposite sides of the central magnetic steel are respectively provided with the flanging.

Further, a central washer is arranged on the top surface of the central magnetic steel.

Further, bian Huasi includes ring frame structure, cover portion and extension, cover portion with the extension is located respectively in the ring frame structure and is connected respectively ring frame structure, cover portion is located the top of limit magnet steel and is connected the limit magnet steel, the extension is connected the turn-ups.

Further, the ring frame structure, the covering part and the extending part are integrated into a whole.

Further, the extension portion is perpendicular to the flange, and the extension portion is parallel to the yoke.

Further, the basin frame is made of plastic, the ring frame structure is provided with a glue grabbing structure, and the basin frame is provided with a matching structure matched with the glue grabbing structure.

Further, the top surface of extension portion is equipped with dodges the groove.

The utility model has the beneficial effects that:

this miniature loudspeaker simple structure, novel, add the turn-ups that turns over towards being close to the yoke direction on Bian Hua span, when basin frame and/or yoke take place to warp, the turn-ups can form the conflict with the yoke to let basin frame and yoke support each other, and then improve basin frame and/or yoke's deformation, be favorable to improving miniature loudspeaker's structural stability, reduced miniature loudspeaker product effectively and fallen the probability that takes place out of range deformation when the reliability test, increased miniature loudspeaker product's reliability allowance.

In addition, the flanging can also play a role in magnetic conduction to a certain extent, so that the performance of the micro-speaker is improved.

Compared with the prior micro-speaker, the micro-speaker has small structural variation and is suitable for large-scale popularization and application.

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 schematic structural diagram of a micro-speaker according to a first embodiment of the present utility model;

fig. 2 is a cross-sectional view of a micro speaker according to a first embodiment of the present utility model;

fig. 3 is a schematic diagram of a structure of a micro-speaker Bian Huasi according to a first embodiment of the present utility model.

Reference numerals illustrate:

1. a basin stand;

2. a vibration assembly; 21. a diaphragm assembly; 22. a voice coil;

3. a yoke;

4. a center magnetic steel;

5. a central washer;

6. edge magnetic steel;

7. bian Huasi; 71. a ring frame structure; 711. a glue grabbing structure; 72. a cover part; 73. an extension; 731. an avoidance groove; 74. flanging;

8. and a support assembly.

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 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 utility model, 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 utility model 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-speaker can be applied to portable electronic equipment such as mobile phones, notebook computers, hearing aids and the like.

The miniature loudspeaker comprises a basin frame 1 and a vibration assembly 2 and a magnetic circuit assembly which are respectively connected with the basin frame 1, wherein the vibration assembly 2 comprises a vibrating diaphragm assembly 21 and a voice coil 22 connected with the vibrating diaphragm assembly 21, the magnetic circuit assembly comprises a yoke 3, a central magnetic steel 4, a central washer 5, side magnetic steels 6 and side washer 7, the central magnetic steel 4 and the side magnetic steels 6 are respectively arranged on the yoke 3, the central washer 5 is arranged on the top surface of the central magnetic steel 4, namely, the central washer 5 is arranged on the surface, away from the yoke 3, of the central magnetic steel 4, the Bian Huasi 7 is connected with the basin frame 1 and the side magnetic steels 6, the Bian Huasi is provided with a flanging 74 which is folded towards the direction close to the yoke 3, and the flanging 74 is arranged on the outer side of the voice coil 22.

In order to reduce the machining precision requirement and facilitate assembly, in this embodiment, a gap is formed between the flange 74 and the yoke 3, and the height of the gap is small. In other embodiments, it is also possible that the bottom end of the flange 74 contacts the yoke 3, which may better allow the basin stand 1 and the yoke 3 to be supported by each other, alternatively, the bottom end of the flange 74 contacts the top surface of the yoke 3.

As a further development, the flange 74 is welded with the yoke 3, and the flange 74 is welded with the yoke 3, so that the structural stability of the micro-speaker can be improved to a greater extent, and the basin frame 1 and the yoke 3 are prevented from being deformed relatively.

In this embodiment, the central magnetic steel 4 is rectangular, the outer sides of one set of opposite sides of the central magnetic steel 4 are respectively provided with the side magnetic steel 6, and the outer sides of the other set of opposite sides of the central magnetic steel 4 are respectively provided with the flanges 74. It can be seen that the micro-speaker of this embodiment has a three-magnetic circuit structure.

In the miniature loudspeaker with the three-magnetic circuit structure, the technical scheme is implemented, and the advantages are particularly obvious. But does not indicate that the technical scheme can only be implemented in a micro-speaker with a three-magnetic circuit structure.

For the convenience of processing and production, the Bian Huasi includes a ring frame structure 71, a cover portion 72 and an extension portion 73, wherein the cover portion 72 and the extension portion 73 are respectively located in the ring frame structure 71 and respectively connected with the ring frame structure 71, the cover portion 72 is located above the side magnetic steel 6 and connected with the side magnetic steel 6, that is, the cover portion 72 is connected with the top surface of the side magnetic steel 6, and the extension portion 73 is connected with the flange 74. Preferably, the ring frame structure 71, the cover portion 72 and the extension portion 73 are integrally formed.

As a preferred embodiment, the extension 73 is perpendicular to the flange 74, and the extension 73 is parallel to the yoke 3. This allows the flange 74 to better support the basin stand 1 and the yoke 3.

In this embodiment, the frame 1 is made of plastic, the ring frame structure 71 is provided with a glue grabbing structure 711, and the frame 1 has a matching structure matched with the glue grabbing structure 711. Optionally, the glue gripping structure 711 is a dovetail groove or the like.

Optionally, the top surface of the extension 73 is provided with an avoidance groove 731, where the avoidance groove 731 is used to avoid a lead wire of the voice coil 22, so as to avoid noise generated by collision between the lead wire and the extension 73 when the micro speaker is in operation.

In order to improve the polarization and rolling vibration phenomena of the voice coil 22 and enable the micro-speaker to realize large-amplitude vibration, the micro-speaker further comprises a support component 8, wherein the support component 8 is connected with the voice coil 22 and the basin frame 1, and the support component 8 comprises a centering support piece and/or a secondary membrane.

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 yoke is provided with a magnetic field,

the side magnetic steel is arranged on the yoke iron;

bian Huasi the Bian Huasi is used for connecting the basin frame with the edge magnetic steel, and the Bian Huasi is provided with a flanging turned towards the direction close to the yoke.

2. A micro-speaker as claimed in claim 1, wherein: and a gap is formed between the turnup and the yoke, or the bottom end of the turnup contacts the yoke.

3. A micro-speaker as claimed in claim 1, wherein: the flanging is welded with the yoke.

4. A micro-speaker as claimed in claim 1, wherein: the novel steel structure is characterized by further comprising a rectangular central magnetic steel, wherein the central magnetic steel is arranged on the yoke, the outer sides of one group of opposite sides of the central magnetic steel are respectively provided with the side magnetic steel, and the outer sides of the other group of opposite sides of the central magnetic steel are respectively provided with the flanging.

5. A micro-speaker as claimed in claim 4, wherein: and the top surface of the central magnetic steel is provided with a central washer.

6. A micro-speaker as claimed in claim 1, wherein: bian Huasi include ring frame structure, cover portion and extension, cover portion with the extension is located respectively in the ring frame structure and connect respectively ring frame structure, cover portion is located the top of limit magnet steel and connect the limit magnet steel, the extension is connected the turn-ups.

7. A micro-speaker as claimed in claim 6, wherein: the ring frame structure, the covering part and the extending part are integrated into a whole.

8. A micro-speaker as claimed in claim 6, wherein: the extending part is perpendicular to the flanging, and the extending part is parallel to the yoke.

9. A micro-speaker as claimed in claim 6, wherein: the basin frame is made of plastic, the ring frame structure is provided with a glue grabbing structure, and the basin frame is provided with a matching structure matched with the glue grabbing structure.

10. A micro-speaker as claimed in claim 6, wherein: the top surface of extension is equipped with dodges the groove.