CN212660319U

CN212660319U - Miniature loudspeaker

Info

Publication number: CN212660319U
Application number: CN202021297028.3U
Authority: CN
Inventors: 王猛
Original assignee: Shenzhen Sunway Acoustics Technology Co Ltd
Current assignee: Shenzhen Sunway Acoustics Technology Co Ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-03-05
Anticipated expiration: 2030-07-03

Abstract

The utility model discloses a micro-speaker, including basin frame, annular china department, yoke and limit magnet steel, annular china department and yoke are located respectively on the basin frame, the limit magnet steel is located and is connected between annular china department and the yoke, the annular china department is contradicted the limit magnet steel, annular china department have expose in the portion that exposes of basin frame, the portion that exposes is close to limit magnet steel sets up, yoke and the welding of the portion that exposes. The yoke and the annular washer opposite side magnetic steel form clamping, so that the side magnetic steel can be more stably arranged between the yoke and the annular washer, the yoke and the annular washer are welded, the impact strength and the tensile strength of the micro-speaker can be effectively improved, the defect that the magnetic circuit of the micro-speaker is greatly lost due to the impact strength in the reliability falling process is avoided, the reliability of the micro-speaker is guaranteed, and the manufacturing process of the micro-speaker is safer and more reliable.

Description

Miniature loudspeaker

Technical Field

The utility model relates to an electroacoustic transducer technical field especially relates to a miniature speaker.

Background

At present, most of loudspeakers and receivers used by mobile terminals are moving-coil loudspeakers. The moving-coil speaker includes: the magnetic circuit component, the vibration component and the basin frame for accommodating and fixing the magnetic circuit component and the vibration component. The vibration component comprises a vibrating diaphragm, a ball top and a voice coil, and the magnetic circuit component comprises a washer, magnetic steel and a yoke which are connected in sequence.

In order to improve performance requirements, the current magnetic circuit assemblies in the micro-speaker and the receiver are usually five magnetic circuits, and in the assembling process of the micro-speaker, the mounting mode of the magnetic steel is usually as follows: gluing the yoke, adhering the magnetic steel to the yoke, gluing the washer frame washer, and adhering the magnetic steel assembly to the washer frame. However, since the side magnetic steel of some micro speakers is small in size and small in bonding area, after the micro speakers are bonded with the yoke in a gluing mode, in the process of falling the reliability, the impact strength of the micro speakers is high, the side magnetic steel is in risk of falling, and the products are poor.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: a micro speaker having a stable structure is provided.

In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a micro loudspeaker, includes basin frame, annular china department, yoke and limit magnet steel, annular china department and yoke are located respectively on the basin frame, limit magnet steel is located between annular china department and the yoke and is connected the yoke, annular china department contradicts limit magnet steel, annular china department have expose in the portion that exposes of basin frame, the portion that exposes is close to limit magnet steel sets up, yoke and the welding of the portion that exposes.

Further, the yoke is provided with a flange, and the flange is welded with the exposed part.

Furthermore, the flanging is L-shaped.

Furthermore, the basin stand is provided with a step part extending outwards, and the exposed part is positioned on the step part.

Further, an outer edge of the annular washer projects in a direction close to the yoke to form the exposed portion.

Further, still include the voice coil loudspeaker voice coil, the voice coil loudspeaker voice coil has two long limits of relative setting and two minor faces of relative setting, at least the outside of minor face is equipped with expose the portion.

Furthermore, the edge magnetic steel is connected with the annular washer in an adhesive manner.

Furthermore, the annular washer and the basin frame are of an integrated structure formed by insert injection molding.

Furthermore, the basin stand also comprises a vibration component arranged on the basin stand.

Furthermore, the flowerpot also comprises a front cover arranged on the flowerpot rack.

The beneficial effects of the utility model reside in that: the yoke and the annular washer opposite side magnetic steel form clamping, so that the side magnetic steel can be more stably arranged between the yoke and the annular washer, the yoke and the annular washer are welded, the impact strength and the tensile strength of the micro-speaker can be effectively improved, the defect that the magnetic circuit of the micro-speaker is greatly lost due to the impact strength in the reliability falling process is avoided, the reliability of the micro-speaker is guaranteed, and the manufacturing process of the micro-speaker is safer and more reliable.

Drawings

Fig. 1 is a cross-sectional view of a micro-speaker according to a first embodiment of the present invention;

fig. 2 is a schematic structural view of a vibration assembly and a frame assembly in a micro speaker according to a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a magnetic circuit assembly in a micro-speaker according to a first embodiment of the present invention.

Description of reference numerals:

1. a basin stand;

2. a ring washer;

3. a diaphragm assembly;

4. a voice coil;

5. a yoke;

6. central magnetic steel;

7. edge magnetic steel;

8. an exposed portion;

9. flanging;

10. a step portion;

11. a front cover.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1 to 3, a micro-speaker includes a frame 1, an annular washer 2, a yoke 5 and a side magnetic steel 7, wherein the annular washer 2 and the yoke 5 are respectively disposed on the frame 1, the side magnetic steel 7 is disposed between the annular washer 2 and the yoke 5 and connected to the yoke 5, the annular washer 2 abuts against the side magnetic steel 7, the annular washer 2 has an exposed portion 8 exposed out of the frame 1, the exposed portion 8 is disposed close to the side magnetic steel 7, and the yoke 5 is welded to the exposed portion 8.

From the above description, the beneficial effects of the present invention are: yoke 5 and annular china department 2 opposite side magnet steel 7 form the centre gripping and can let limit magnet steel 7 more stable arrange in between yoke 5 and annular china department 2, and yoke 5 and the welding of annular china department 2 can improve micro-speaker's impact strength and tensile strength effectively, avoid the reliability to fall the in-process micro-speaker and receive impact strength to lead to greatly falling the magnetic circuit and the harmfulness that arouses, do benefit to the reliability of guaranteeing micro-speaker and can let micro-speaker processing procedure safe and reliable more.

Further, the yoke 5 is provided with a flange 9, and the flange 9 is welded with the exposed part 8.

It can be known from the above description that the arrangement of the turned-over edge 9 facilitates the welding of the yoke 5 and the annular washer 2, and is beneficial to improving the assembly efficiency of the micro-speaker.

Further, the flanging 9 is L-shaped.

As can be seen from the above description, the flange 9 is simple in structure and easy to manufacture.

Further, the basin stand 1 is provided with a step part 10 extending outwards, and the exposed part 8 is positioned on the step part 10.

As can be seen from the above description, one side of the welding area between the yoke iron 5 and the annular washer 2 is open and free of shielding, and welding is facilitated.

Further, an outer edge of the annular washer 2 projects in a direction close to the yoke 5 to form the exposed portion 8.

As can be seen from the above description, the annular washer 2 has enough regions to be connected with the frame 1, which is beneficial to ensuring the bonding force between the annular washer 2 and the frame 1, thereby improving the structural stability of the micro-speaker.

Further, still include voice coil 4, voice coil 4 has two long limits that set up relatively and two minor faces that set up relatively, and at least the outside of minor face is equipped with expose portion 8.

As can be seen from the above description, since the side magnetic steel 7 outside the short side of the voice coil 4 has a small volume and a small bonding area with the yoke 5, it is easier to detach from the yoke 5, and the yoke 5 and the welding area of the annular washer 2 are disposed close to the short side, which can enhance the structural stability outside the short side.

Furthermore, the edge magnetic steel 7 is connected with the annular washer 2 in an adhesive manner.

As apparent from the above description, such a configuration can further improve the structural stability of the micro-speaker.

Furthermore, the annular washer 2 and the basin frame 1 are molded into an integral structure through insert injection molding.

As can be seen from the above description, the frame 1 is stably connected with the ring washer 2.

Further, the basin stand comprises a vibration component arranged on the basin stand 1.

Further, the flowerpot further comprises a front cover 11 arranged on the flowerpot rack 1.

Example one

Referring to fig. 1 to fig. 3, a first embodiment of the present invention is: a micro loudspeaker can be used for mobile terminals such as mobile phones, tablet computers and the like, and comprises a basin stand component, a magnetic circuit component and a vibration component, wherein the basin stand component comprises a basin stand 1 and an annular washer 2 arranged on the basin stand 1; the vibration assembly comprises a vibrating diaphragm assembly 3 and a voice coil 4 arranged on the vibrating diaphragm assembly 3, and the vibrating diaphragm assembly 3 is connected with the basin frame 1; the magnetic circuit component comprises a yoke 5, and a central magnetic steel 6 and a plurality of side magnetic steels 7 which are respectively arranged on the yoke 5, the side magnetic steels 7 are arranged around the central magnetic steel 6, a magnetic gap for accommodating the voice coil 4 is formed between the central magnetic steel 6 and the side magnetic steels 7, and the yoke 5 is arranged on the basin frame 1. Optionally, the annular washer 2 and the basin frame 1 are formed into an integral structure through insert injection molding.

The edge magnetic steel 7 is located between the annular washer 2 and the yoke 5, the annular washer 2 is abutted to the edge magnetic steel 7, the annular washer 2 is provided with an exposed part 8 exposed out of the basin frame 1, the exposed part 8 is close to the edge magnetic steel 7, the yoke 5 is welded with the exposed part 8, and the yoke 5 and the exposed part 8 are welded in a selectable mode.

Referring to fig. 1 and 3, preferably, the yoke 5 has a flange 9, and the yoke 5 is welded to the exposed portion 8 through the flange 9. Optionally, the flanging 9 is L-shaped; the basin stand 1 is provided with a step part 10 extending outwards, and the exposed part 8 is positioned on the step part 10. In detail, the outer edge of the annular washer 2 protrudes toward the direction close to the yoke 5 to form the exposed portion 8, and in more detail, the side surface of the exposed portion 8 close to the yoke 5 is coplanar with the side surface of the stepped portion 10 close to the yoke 5.

The voice coil 4 has two long sides and two short sides, and the two long sides are opposite to each other, and the exposed part 8 is arranged on the outer side of at least the short sides. In this embodiment, the yoke 5 has two flanges 9 disposed opposite to each other. It is easily understood that in other embodiments, the outer side of the long side may be provided with an exposed portion 8 welded to the yoke 5.

In order to further improve the structural stability of the micro-speaker, the edge magnetic steel 7 is connected with the annular washer 2 in an adhesive manner.

As shown in fig. 1, the utility model further comprises a front cover 11 arranged on the basin stand 1, wherein the front cover 11 is positioned on one side of the vibration component far away from the yoke 5.

When the micro loudspeaker is assembled, the central magnetic steel 6 and the side magnetic steel 7 are respectively bonded with the yoke 5 to form a magnetic circuit assembly, then the magnetic circuit assembly is in adhesive connection with the annular washer 2 on the frame 1, and then the flanging 9 and the exposed part 8 are welded. The assembly is simple and easy.

To sum up, the utility model provides a miniature speaker can not appear falling the magnetic circuit phenomenon, and structural stability is good, durable.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a micro loudspeaker, includes basin frame, annular china department, yoke and limit magnet steel, annular china department and yoke are located respectively on the basin frame, limit magnet steel is located between annular china department and the yoke and is connected the yoke, annular china department contradicts limit magnet steel, its characterized in that: the annular washer is provided with an exposed part exposed out of the basin frame, the exposed part is arranged close to the side magnetic steel, and the yoke is welded with the exposed part.

2. The micro-speaker of claim 1, wherein: the yoke iron is provided with a flanging, and the flanging is welded with the exposed part.

3. The micro-speaker of claim 2, wherein: the flanging is L-shaped.

4. The micro-speaker of claim 3, wherein: the basin stand is provided with a step part extending outwards, and the exposed part is positioned on the step part.

5. The micro-speaker of claim 4, wherein: the outer edge of the annular washer protrudes in a direction close to the yoke to form the exposed portion.

6. The micro-speaker of claim 1, wherein: still include the voice coil loudspeaker voice coil, the voice coil loudspeaker voice coil has two long limits of relative setting and two minor faces of relative setting, at least the outside of minor face is equipped with expose the portion.

7. The micro-speaker of claim 1, wherein: the edge magnetic steel is connected with the annular washer in an adhesive manner.

8. The micro-speaker of claim 1, wherein: the annular washer and the basin frame are of an integrated structure formed by insert injection molding.

9. The micro-speaker of claim 1, wherein: the basin stand is characterized by further comprising a vibration assembly arranged on the basin stand.

10. The micro-speaker of claim 1, wherein: also comprises a front cover arranged on the basin frame.