CN215420752U

CN215420752U - Micro loudspeaker monomer

Info

Publication number: CN215420752U
Application number: CN202121354042.7U
Authority: CN
Inventors: 林嘉平; 董庆宾
Original assignee: Yiyang Xinwei Acoustic Technology Co Ltd
Current assignee: Weishi Technology Co ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2022-01-04
Anticipated expiration: 2031-06-17

Abstract

The utility model discloses a miniature loudspeaker unit, which comprises a basin frame and a vibrating diaphragm, wherein the vibrating diaphragm comprises an inner fixing part, a folded ring part and an outer fixing part which are sequentially connected from inside to outside, a folded edge is arranged on the outer fixing part, the outer fixing part and the folded edge are both connected with the basin frame, and the folded edge is positioned on the inner side of the basin frame. The hem with the vibrating diaphragm shifts to the inboard of basin frame, utilizes the hem of basin frame protection vibrating diaphragm to avoid the hem to receive the extrusion, drag and jack-up, lead to the hem to harm or with bad phenomena such as basin frame separation, improved the free structural stability of miniature speaker effectively.

Description

Micro loudspeaker monomer

Technical Field

The utility model relates to the technical field of electroacoustic transducers, in particular to a miniature loudspeaker monomer.

Background

At present, most of loudspeakers and receivers used by mobile terminals are moving-coil loudspeakers. The moving-coil speaker includes: magnetic circuit subassembly, vibration subassembly and accept fixedly magnetic circuit subassembly and vibration subassembly's basin frame, the vibration subassembly includes vibrating diaphragm, ball top and voice coil loudspeaker voice coil.

In prior art, in order to promote miniature speaker performance, can generally reduce the positive veneer width of basin frame and vibrating diaphragm, simultaneously in order to guarantee the fixed strength of vibrating diaphragm, the edge of vibrating diaphragm can increase the hem, the hem is fixed with the lateral surface of basin frame to guarantee the joint strength of vibrating diaphragm and basin frame. However, in the production and transportation processes, the folded edge protrudes out of the outer side surface of the miniature loudspeaker unit, so that the folded edge is easily extruded, pulled and jacked, and the folded edge is damaged or is separated from the frame.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: a micro-speaker unit having a stable structure is provided.

In order to solve the technical problems, the utility model adopts the technical scheme that: miniature speaker monomer, including basin frame and vibrating diaphragm, the vibrating diaphragm includes interior fixed part, folded ring portion and the outer fixed part that links to each other in proper order from inside to outside, the hem has on the outer fixed part, outer fixed part reaches the hem all with the basin frame is connected, the hem is located the inboard of basin frame.

Furthermore, one side of the folded edge, which is close to the basin frame, is provided with an outer convex part, the inner wall of the basin frame is provided with an inner concave part matched with the outer convex part, and the outer convex part is fixed in the inner concave part.

Further, the outer convex part is connected with the bottom surface of the outer fixing part.

Furthermore, a first accommodating groove is formed in the joint of the side wall of the inner concave part and the bottom surface of the inner concave part.

Furthermore, an accommodating groove is formed in the inner wall of the basin frame, and at least part of the folded edge is located in the accommodating groove.

Furthermore, a second accommodating groove is formed in the connecting position of the side wall of the accommodating groove and the bottom surface of the accommodating groove.

Further, the folded edge is bonded with the basin frame.

Furthermore, the vibrating diaphragm and the basin frame form an integrated structure through an in-mold injection molding process.

Furthermore, a first reinforcing structure is arranged on a combined surface of the outer fixing part and the basin frame.

Furthermore, a second reinforcing structure is arranged on a combined surface of the folded edge and the basin frame.

The utility model has the beneficial effects that: the hem with the vibrating diaphragm shifts to the inboard of basin frame, utilizes the hem of basin frame protection vibrating diaphragm to avoid the hem to receive the extrusion, drag and jack-up, lead to the hem to harm or with bad phenomena such as basin frame separation, improved the free structural stability of miniature speaker effectively.

Drawings

FIG. 1 is a diagram of an explosion head of a micro-speaker unit according to an embodiment of the present invention;

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

FIG. 3 is an enlarged view of detail A in FIG. 2;

fig. 4 is a schematic structural diagram of a diaphragm in a single micro-speaker according to a first embodiment of the present invention;

fig. 5 is a partial sectional view of a region where a folded edge is located in a micro-speaker unit according to a second embodiment of the present invention.

Fig. 6 is a partial sectional view of a region where a folded edge is located in a micro-speaker unit according to a third embodiment of the present invention.

Description of reference numerals:

1. a basin stand; 11. an inner concave portion; 12. a first accommodating groove; 13. an accommodating groove; 14. a second accommodating groove;

2. vibrating diaphragm; 21. an inner fixing portion; 22. a folded ring part; 23. an outer fixing portion; 24. folding edges; 241. an outer convex portion;

3. a ball top;

4. a voice coil;

5. a magnetic circuit assembly.

Detailed Description

In order to explain technical contents, achieved objects, and 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 6, the micro speaker unit includes a frame 1 and a diaphragm 2, the diaphragm 2 includes an inner fixing portion 21, a folded ring portion 22 and an outer fixing portion 23 sequentially connected from inside to outside, the outer fixing portion 23 has a folded edge 24, both the outer fixing portion 23 and the folded edge 24 are connected to the frame 1, and the folded edge 24 is located on the inner side of the frame 1.

From the above description, the beneficial effects of the present invention are: the hem 24 with vibrating diaphragm 2 shifts to the inboard of basin frame 1, utilizes the hem 24 of basin frame 1 protection vibrating diaphragm 2 to avoid hem 24 to receive the extrusion, pull and jack-up, lead to hem 24 to damage or with bad phenomena such as basin frame 1 separation, improved the free structural stability of miniature speaker effectively.

Further, an outer convex portion 241 is arranged on one side of the folded edge 24 close to the basin frame 1, an inner concave portion 11 matched with the outer convex portion 241 is arranged on the inner wall of the basin frame 1, and the outer convex portion 241 is fixed in the inner concave portion 11.

According to the above description, the inner wall of the frame 1 adopts a step design, so that the fixed area of the vibrating diaphragm 2 and the frame 1 can be increased, the fixed strength of the vibrating diaphragm 2 and the frame 1 can be increased, and the structural stability of the micro-speaker is improved.

Further, the outer protrusion 241 is connected to the bottom surface of the outer fixing portion 23.

From the above description, the vibrating diaphragm 2 is convenient to be manufactured by injection molding, and the bottom surface of the outer convex part 241 connected with the outer fixing part 23 can reduce the risk of peeling the folded edge 24 from the outer fixing part 23, which is beneficial to ensuring the structural stability of the vibrating diaphragm 2.

Further, a first accommodating groove 12 is formed at the joint of the side wall of the concave part 11 and the bottom surface of the concave part 11.

As can be seen from the above description, when the folded edge 24 is adhesively connected to the frame 1, the first receiving groove 12 can receive glue solution, thereby improving the stability of the connection of the folded edge 24 to the frame 1; when hem 24 and basin frame 1 pass through mould internal injection molding process shaping formula structure as an organic whole, first holding tank 12 can hold partial hem 24 material for in the subregion embedding basin frame 1 of hem 24, thereby let hem 24 and basin frame 1 form more stably and be connected.

Further, an accommodating groove 13 is formed in the inner wall of the basin stand 1, and at least part of the folded edge 24 is located in the accommodating groove 13.

As can be seen from the above description, the folded edge 24 is at least partially accommodated in the accommodating groove 13, so that the influence of the inside of the folded edge 24 on the magnetic gap can be reduced, thereby ensuring the performance of the miniature speaker unit, and the bottom surface of the folded edge 24 and the bottom surface of the accommodating groove 13 can be connected, i.e. the fixing area of the folded edge 24 and the frame 1 is increased, thereby further improving the stability of the connection between the diaphragm 2 and the frame 1.

Further, a second receiving groove 14 is formed at a connection portion between the side wall of the receiving groove 13 and the bottom surface of the receiving groove 13.

As can be seen from the above description, when the folded edge 24 is adhesively connected to the frame 1, the second receiving groove 14 can receive glue solution, thereby improving the stability of the connection of the folded edge 24 to the frame 1; when hem 24 and basin frame 1 pass through mould plastics technology shaping formula structure as an organic whole in the mould, second holding tank 14 can hold partial hem 24 material for in the subregion embedding basin frame 1 of hem 24, thereby let hem 24 and basin frame 1 form more stably and be connected.

Further, the folded edge 24 is bonded with the basin frame 1.

Further, the vibrating diaphragm 2 and the basin frame 1 form an integrated structure through an in-mold injection molding process.

As can be seen from the above description, the outer fixing portion 23 and the folded edge 24 of the diaphragm 2 are connected to the frame 1 in various ways, which is beneficial to enriching the diversity of the speaker units.

Further, a first reinforcing structure is arranged on a combination surface of the outer fixing part 23 and the basin frame 1.

Further, a second reinforcing structure is arranged on the joint surface of the folded edge 24 and the basin frame 1.

As can be seen from the above description, the first reinforcing structure and/or the second reinforcing structure may further improve the bonding force between the diaphragm 2 and the frame 1, so as to further improve the structural stability of the micro-speaker unit.

Example one

Referring to fig. 1 to 4, a first embodiment of the present invention is: a loudspeaker unit can be applied to electronic equipment such as mobile phones, tablet computers, intelligent watches, portable game machines and the like.

As shown in fig. 1, the speaker unit includes a frame 1, and a vibration assembly and a magnetic circuit assembly 5 respectively disposed on the frame 1, the vibration assembly includes a diaphragm assembly and a voice coil 4 connected to each other, the diaphragm assembly includes a diaphragm 2 and a dome 3 connected to each other, and the magnetic circuit assembly 5 is provided with a magnetic gap for accommodating the voice coil 4. In some embodiments, the dome 3 may not be provided in the voice diaphragm assembly. The material of the diaphragm 2 may be rubber, such as silica gel.

Referring to fig. 1 to 3, the diaphragm 2 includes an inner fixing portion 21, a folded ring portion 22 and an outer fixing portion 23, which are sequentially connected from inside to outside, the outer fixing portion 23 has a folded edge 24, the folded edge 24 is located at the inner side of the frame 1, and it is easy to understand that the folded edge 24 is synchronously formed when the diaphragm 2 is formed, that is, the folded edge 24 and the outer fixing portion 23 are an integral structure formed by injection molding. The material of basin frame 1 both can be metal, also can be nonmetal, nevertheless because the basin frame 1 of metal material possess better heat dispersion and structural strength, so, preferentially the material of basin frame 1 is the metal.

In some embodiments, the diaphragm 2 and the frame 1 can be connected by gluing, i.e. the outer fixing portion 23 and the folded edge 24 are connected to the frame 1 by glue/back glue respectively. However, in this embodiment, the vibrating diaphragm 2 and the basin frame 1 form an integrated structure through an in-mold injection molding process, so that the vibrating diaphragm 2 and the basin frame 1 can form a more stable fixing effect, and meanwhile, the bonding process of the vibrating diaphragm 2 and the basin frame 1 can be cancelled, thereby being more beneficial to reducing the cost and improving the production efficiency. As shown in fig. 4, in this embodiment, the whole hem 24 is rectangular frame, the thickness at the bight of hem 24 is greater than the thickness of its long side and short side, so, can 2 bulk strength of effectual increase vibrating diaphragm, when vibrating diaphragm 2 and basin frame 1 mould internal molding simultaneously, more be favorable to 2 liquation flows and then the shaping of vibrating diaphragm, has promoted production efficiency, has reduced the defective rate simultaneously.

In order to further improve the bonding force between the diaphragm 2 and the frame 1, a first reinforcing structure (not shown) is disposed on the bonding surface between the outer fixing portion 23 and the frame 1, and the first reinforcing structure may be a protrusion, a recess, a through hole, or the like. Similarly, the joint surface of the folded edge 24 and the frame 1 may also be provided with a second reinforcing structure (not shown), which includes, but is not limited to, a protrusion, a recess, a through hole, or the like. As can be easily understood, the combination surface of the outer fixing part 23 and the basin frame 1 is the bottom surface of the outer fixing part 23; the combining surface of the folded edge 24 and the basin frame 1 is the outer side surface of the folded edge 24.

Example two

Referring to fig. 1 and 5, a second embodiment of the present invention is: a loudspeaker unit can be applied to electronic equipment such as mobile phones, tablet computers, intelligent watches, portable game machines and the like.

As shown in fig. 1, the speaker unit includes a frame 1, and a vibration assembly and a magnetic circuit assembly 5 respectively disposed on the frame 1, the vibration assembly includes a diaphragm assembly and a voice coil 4 connected to each other, the diaphragm assembly includes a diaphragm 2 and a dome 3 connected to each other, and the magnetic circuit assembly 5 is provided with a magnetic gap for accommodating the voice coil 4. In some embodiments, the dome 3 may not be provided in the voice diaphragm assembly.

Referring to fig. 1 and 5, the diaphragm 2 includes an inner fixing portion 21, a folded ring portion 22, and an outer fixing portion 23, which are sequentially connected from inside to outside, the outer fixing portion 23 has a folded edge 24, the folded edge 24 is located at the inner side of the frame 1, and it is easy to understand that the folded edge 24 is synchronously formed when the diaphragm 2 is formed, that is, the folded edge 24 and the outer fixing portion 23 are an integral structure formed by injection molding.

The material of basin frame 1 both can be metal, also can be nonmetal, nevertheless because the basin frame 1 of metal material possess better heat dispersion and structural strength, so, preferentially the material of basin frame 1 is the metal.

In some embodiments, the diaphragm 2 and the frame 1 can be connected by gluing, i.e. the outer fixing portion 23 and the folded edge 24 are connected to the frame 1 by glue/back glue respectively. However, in this embodiment, the vibrating diaphragm 2 and the basin frame 1 form an integrated structure through an in-mold injection molding process, so that the vibrating diaphragm 2 and the basin frame 1 can form a more stable fixing effect, and meanwhile, the bonding process of the vibrating diaphragm 2 and the basin frame 1 can be cancelled, thereby being more beneficial to reducing the cost and improving the production efficiency.

As shown in fig. 5, in order to increase the combination area of the folding edge 24 and the frame 1, an outer convex portion 241 is arranged on one side of the folding edge 24 close to the frame 1, an inner concave portion 11 matched with the outer convex portion 241 is arranged on the inner wall of the frame 1, and the outer convex portion 241 is fixed in the inner concave portion 11. In order to ensure the structural stability of the diaphragm 2 itself, it is preferable that the outer protrusion 241 is connected to the bottom surface of the outer fixing portion 23.

Optionally, a first receiving groove 12 is formed at a connection between a side wall of the concave portion 11 and a bottom surface of the concave portion 11.

In order to further improve the bonding force between the diaphragm 2 and the frame 1, a first reinforcing structure (not shown) is disposed on the bonding surface between the outer fixing portion 23 and the frame 1, and the first reinforcing structure may be a protrusion, a recess, a through hole, or the like. Similarly, the joint surface of the folded edge 24 and the frame 1 may also be provided with a second reinforcing structure (not shown), which includes, but is not limited to, a protrusion, a recess, a through hole, or the like. As can be easily understood, the combination surface of the outer fixing part 23 and the basin frame 1 is the bottom surface of the outer fixing part 23; the combination surface of the folded edge 24 and the frame 1 is at least one of the outer side surface of the outer convex part 241, the bottom surface of the outer convex part 241 and the outer side surface of the folded edge 24 corresponding to the non-outer convex part 241 area.

EXAMPLE III

Referring to fig. 1 and fig. 6, a third embodiment of the present invention is: a loudspeaker unit can be applied to electronic equipment such as mobile phones, tablet computers, intelligent watches, portable game machines and the like.

Referring to fig. 1 and 6, the diaphragm 2 includes an inner fixing portion 21, a folded ring portion 22, and an outer fixing portion 23, which are sequentially connected from inside to outside, the outer fixing portion 23 has a folded edge 24, the folded edge 24 is located at the inner side of the frame 1, and it is easy to understand that the folded edge 24 is synchronously formed when the diaphragm 2 is formed, that is, the folded edge 24 and the outer fixing portion 23 are an integral structure formed by injection molding.

As shown in fig. 6, in order to increase the combination area of the folded edge 24 and the frame 1, an accommodating groove 13 is formed on the inner wall of the frame 1, and at least a part of the folded edge 24 is located in the accommodating groove 13, in this embodiment, the folded edge 24 is entirely accommodated in the accommodating groove 13, and preferably, the inner side surface of the folded edge 24 is flush with the inner wall of the frame 1.

Optionally, a second receiving groove 14 is disposed at a connection between a side wall of the receiving groove 13 and a bottom surface of the receiving groove 13.

In order to further improve the bonding force between the diaphragm 2 and the frame 1, a first reinforcing structure (not shown) is disposed on the bonding surface between the outer fixing portion 23 and the frame 1, and the first reinforcing structure may be a protrusion, a recess, a through hole, or the like. Similarly, the joint surface of the folded edge 24 and the frame 1 may also be provided with a second reinforcing structure (not shown), which includes, but is not limited to, a protrusion, a recess, a through hole, or the like. As can be easily understood, the combination surface of the outer fixing part 23 and the basin frame 1 is the bottom surface of the outer fixing part 23; the combination surface of the folded edge 24 and the basin frame 1 is the outer side surface of the folded edge 24 and/or the bottom surface of the folded edge 24.

In summary, the edgefold of the diaphragm is transferred to the inner side of the frame, and the frame is used for protecting the edgefold of the diaphragm, so that the phenomenon that the edgefold is damaged or separated from the frame due to extrusion, pulling and jacking of the edgefold is avoided, and the structural stability of the miniature loudspeaker monomer is effectively improved; the thickness of the corner of the folded edge is greater than the thickness of the long side and the short side of the folded edge, so that the structural strength of the vibrating diaphragm can be improved, the forming of the vibrating diaphragm can be accelerated, the cost can be reduced, and the production efficiency can be improved; the arrangement of the first and second reinforcing structures/the arrangement of the first and second accommodating grooves can further improve the stability of the connection between the vibrating diaphragm and the basin stand.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.

Claims

1. Miniature speaker monomer, including basin frame and vibrating diaphragm, the vibrating diaphragm includes interior fixed part, folded ring portion and the outer fixed part that links to each other in proper order from inside to outside, the hem has on the outer fixed part, outer fixed part reaches the hem all with the basin frame is connected, its characterized in that: the folded edge is positioned on the inner side of the basin frame.

2. A micro-speaker cell as claimed in claim 1, wherein: one side of the folded edge, which is close to the basin frame, is provided with an outer convex part, the inner wall of the basin frame is provided with an inner concave part matched with the outer convex part, and the outer convex part is fixed in the inner concave part.

3. A micro-speaker cell as claimed in claim 2, wherein: the outer convex part is connected with the bottom surface of the outer fixing part.

4. A micro-speaker cell as claimed in claim 2, wherein: the junction of the side wall of the concave part and the bottom surface of the concave part is provided with a first accommodating groove.

5. A micro-speaker cell as claimed in claim 1, wherein: an accommodating groove is formed in the inner wall of the basin frame, and at least part of the folded edge is located in the accommodating groove.

6. The micro-speaker cell of claim 5, wherein: and a second accommodating groove is formed at the joint of the side wall of the accommodating groove and the bottom surface of the accommodating groove.

7. A micro-speaker cell as claimed in claim 1, wherein: the folded edge is bonded with the basin frame.

8. A micro-speaker cell as claimed in claim 1, wherein: the vibrating diaphragm and the basin frame form an integrated structure through an in-mold injection molding process.

9. A micro-speaker cell as claimed in claim 1, wherein: and a first reinforcing structure is arranged on a joint surface of the outer fixing part and the basin frame.

10. A micro-speaker cell as claimed in claim 1, wherein: and a second reinforcing structure is arranged on a joint surface of the folded edge and the basin frame.