CN220422030U

CN220422030U - Micro-speaker

Info

Publication number: CN220422030U
Application number: CN202321552812.8U
Authority: CN
Inventors: 林嘉平; 董庆宾
Original assignee: Shenzhen Weishi Acoustics Co Ltd
Current assignee: Shenzhen Weishi Acoustics Co Ltd
Priority date: 2023-06-16
Filing date: 2023-06-16
Publication date: 2024-01-30
Anticipated expiration: 2033-06-16

Abstract

The utility model discloses a miniature loudspeaker, which comprises a conducting plate and a plurality of voice coils, wherein two adjacent voice coils are connected in series through the conducting plate; the conducting plate is positioned below or above the voice coil. Two adjacent voice coils in this micro-speaker realize establishing ties through the breakover board that is located voice coil loudspeaker top or below and switch on, establish ties between the voice coil loudspeaker with the lead wire need not to use the suspension wire, do benefit to optimizing micro-speaker inner space overall arrangement, avoid micro-speaker at the during operation, establish ties between the voice coil loudspeaker with the lead wire striking other structures and send the noise, do benefit to the performance of guaranteeing micro-speaker.

Description

Micro-speaker

Technical Field

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

Background

Micro-speakers serve as a common electroacoustic transducer device for converting electrical energy into acoustic energy, which plays an indispensable role in sound emission systems.

With the rapid development of consumer electronic products such as mobile phones and tablet computers, as an important component unit of such products, the micro-speaker has also put forward higher and higher requirements on performance, size and the like, and the micro-speaker with a multi-voice coil structure has been developed.

However, in the conventional micro-speaker with the multi-voice coil structure, a plurality of voice coils are commonly connected in series through metal pads on the frame, and the voice coil lead part connected with the metal pads is used as a suspension wire for realizing the connection of the voice coils through the metal pads, so that not only the related space inside the micro-speaker is occupied, but also the risk of the suspension wire colliding with other structures exists.

Disclosure of Invention

The utility model mainly aims to provide a miniature loudspeaker with a novel structure, and aims to solve the problem that lead wires for series connection among a plurality of voice coils are easy to collide with other structures in the existing miniature loudspeaker.

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

a conductive plate;

a plurality of voice coils, wherein two adjacent voice coils are connected in series through the conducting plate;

the conducting plate is positioned below or above the voice coil.

Further, the conducting plate is adhered and fixed with the voice coil.

Further, the conducting plate is in a strip shape, two ends of the conducting plate are exposed out of the outer side of the voice coil, welding areas are respectively arranged at two ends of the conducting plate, two welding areas are conducted mutually, one welding area is conducted with one voice coil in a welding mode, and the other welding area is conducted with the adjacent voice coil in a welding mode.

Further, the voice coil loudspeaker voice coil assembly further comprises a vibrating diaphragm assembly, the conducting plate is located above the voice coil loudspeaker voice coil, and the conducting plate and the voice coil loudspeaker voice coil are respectively connected with the vibrating diaphragm assembly.

Further, the vibrating diaphragm assembly comprises a sound membrane and a ball top, the sound membrane comprises an inner fixing part, a folded ring part and an outer fixing part which are sequentially connected from inside to outside, a window is formed in the center of the inner fixing part, the ball top is connected with the inner fixing part and seals the window, and the conducting plate is connected with the ball top.

Further, the dome is positioned below the inner fixing part, a convex hull is arranged on the dome, and at least part of the conducting plate is positioned in the convex hull; or the dome is positioned above the inner fixing part, and the conducting plate is positioned in the open window.

Further, the bottom surface of the ball top is provided with an accommodating groove, and the conducting plate is at least partially positioned in the accommodating groove.

Further, the conducting plate is a circuit board or a metal plate.

Further, adjacent edges of two adjacent voice coils are in contact with each other; alternatively, a gap is provided between adjacent edges of two adjacent voice coils.

Further, the number of the voice coils is greater than or equal to three, and the voice coils with a plurality of voice coils are arranged side by side.

The utility model has the beneficial effects that: two adjacent voice coils in this micro-speaker realize establishing ties through the breakover board that is located voice coil loudspeaker top or below and switch on, establish ties between the voice coil loudspeaker with the lead wire need not to use the suspension wire, do benefit to optimizing micro-speaker inner space overall arrangement, avoid micro-speaker at the during operation, establish ties between the voice coil loudspeaker with the lead wire striking other structures and send the noise, do benefit to the performance of guaranteeing micro-speaker.

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 an exploded view of a micro-speaker according to a first embodiment of the present utility model;

fig. 2 is a schematic structural diagram of an internal structure of a micro-speaker according to a first embodiment of the present utility model;

fig. 3 is a cross-sectional view of a micro-speaker according to a second embodiment of the present utility model;

fig. 4 is a cross-sectional view of a micro-speaker according to a third embodiment of the present utility model;

fig. 5 is a schematic structural diagram of an internal structure of a micro-speaker according to a fourth embodiment of the present utility model;

fig. 6 is a schematic diagram of a second internal structure of a micro-speaker according to a fourth embodiment of the present utility model;

fig. 7 is a schematic structural diagram of an internal structure of a micro-speaker according to a fifth embodiment of the present utility model.

Reference numerals illustrate:

1. a basin stand;

2. a magnetic circuit assembly;

3. a sound membrane;

4. a dome; 41. convex hulls; 42. edge pressing; 43. a receiving groove;

5. a voice coil;

6. a conductive plate;

7. centering support.

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 this application, unless specifically stated 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 terms in this application will be understood by those of ordinary skill in the art as the case may be.

Example 1

Referring to fig. 1 and 2, a first embodiment of the utility model is as follows: the miniature loudspeaker comprises a basin frame 1, a vibration assembly and a magnetic circuit assembly 2, wherein the vibration assembly and the magnetic circuit assembly 2 are respectively connected with the basin frame 1, the vibration assembly comprises a vibrating diaphragm assembly and a plurality of voice coils 5 connected with the vibrating diaphragm assembly, and the magnetic circuit assembly 2 is provided with a magnetic gap for the voice coils 5 to move.

The micro-speaker further comprises a conducting plate 6, and two adjacent voice coils 5 are connected in series through the conducting plate 6; the conducting plate 6 is positioned below or above the voice coil 5; the conducting board 6 is a circuit board or a metal board, the circuit board includes but is not limited to a PCB board, an FPC board, etc., and the metal board includes but is not limited to a copper plate.

In this embodiment, the conducting plate 6 is located above the voice coil 5, and the conducting plate 6 and the voice coil 5 are respectively connected to the diaphragm assembly.

Specifically, the vibrating diaphragm assembly comprises a sound membrane 3 and a dome 4, the sound membrane 3 comprises an inner fixing part, a folded ring part and an outer fixing part which are sequentially connected from inside to outside, a window is formed in the center of the inner fixing part, the dome 4 is connected with the inner fixing part and seals the window, and the conducting plate 6 is connected with the dome 4.

More specifically, the dome 4 is located below the inner fixing portion, the dome 4 is provided with a convex hull 41, the convex hull 41 is located in the window, and at least part of the conducting plate 6 is located in the convex hull 41, so that the micro-speaker can be kept light and thin.

In this embodiment, the conducting plate 6 is disposed corresponding to the middle area of the adjacent sides of the two adjacent voice coils 5, the conducting plate 6 spans across the adjacent sides of the two adjacent voice coils 5, and a lead wire of the voice coil 5 is soldered to the conducting plate 6 from the inner side of the voice coil 5, so that the winding method of the voice coil 5 has the advantage of low requirement, and the lead wire of the voice coil 5 is not required to be led out from the outer side.

In order to ensure the stability of the welding between the voice coil 5 and the conductive plate 6, it is preferable that the conductive plate 6 is bonded to the voice coil 5.

Optionally, the micro-speaker further includes a centering support 7, a conducting line is disposed on the centering support 7, the centering support 7 connects the frame 1 with the voice coil 5, and the voice coil 5 is not electrically connected with the conducting plate 6, and the lead wire is connected with the conducting line on the centering support 7. Of course, the frame 1 is provided with a bonding pad, and the lead wire of the voice coil 5, which is not electrically connected to the conducting plate 6, may be directly connected to the bonding pad, i.e. in the form of a suspension wire.

A gap is formed between adjacent edges of two adjacent voice coils 5, or the adjacent edges of two adjacent voice coils 5 may be in contact with each other, which may be specifically set according to actual needs. In this embodiment, the outer side walls of the adjacent edges of the two adjacent voice coils 5 are fixedly connected to each other, and specifically, the two adjacent voice coils 5 can be glued and connected selectively, so that the two adjacent voice coils 5 form an integral structure, thereby improving the polarization and rolling vibration phenomena of the voice coils 5, and being beneficial to further improving the acoustic performance of the micro-speaker.

Example two

Referring to fig. 3, a second embodiment of the present utility model is a parallel technical solution of the first embodiment, and is different from the first embodiment in that: the edge of the top surface of the ball top 4 is provided with a pressing edge 42, the bottom surface of the inner fixing part is connected with the inner bottom surface of the pressing edge 42, the top surface of the ball top 4 is flush with or approximately flush with the top surface of the inner fixing part, the bottom surface of the ball top 4 is provided with a containing groove 43, and at least part of the conducting plate 6 is positioned in the containing groove 43.

Example III

Referring to fig. 4, the third embodiment of the present utility model is a parallel technical solution of the first embodiment, and is different from the first embodiment in that: the dome 4 is located above the inner fixing part, and the conducting plate 6 is located in the opening window.

The thickness of the conductive plate 6 is preferably less than or equal to the thickness of the inner fixing portion. This facilitates the manufacture of the dome 4. Of course, it is also possible to provide a receiving structure for receiving the top region of the conductive plate 6 on the dome 4, if necessary. This ensures the light and thin micro-speaker.

Example IV

Referring to fig. 5 and 6, a fourth embodiment of the present utility model is a parallel solution of the first embodiment, and is different from the first embodiment in that:

the conduction plate 6 is rectangular form, and the both ends of conduction plate 6 expose in the outside of voice coil loudspeaker voice coil 5, the both ends of conduction plate 6 are equipped with the welded zone respectively, two the welded zone switches on each other, and one the welded zone with one voice coil loudspeaker voice coil 5 welding switches on, another the welded zone with adjacent another voice coil loudspeaker voice coil 5 welding switches on.

In this embodiment, the conducting plate 6 is disposed along the long side of the voice coil 5, that is, two ends of the conducting plate 6 are exposed outside the short side of the voice coil 5.

The conducting plate 6 may be located above the voice coil 5 or below the voice coil 5, and the diaphragm assembly may be adapted to any one of the first to third embodiments when the conducting plate 6 is located above the voice coil 5.

Example five

Referring to fig. 7, a fifth embodiment of the present utility model is a parallel technical solution of the first embodiment, and is different from the first embodiment in that:

the number of the voice coils 5 is greater than or equal to three, the voice coils 5 with a plurality of voice coils are arranged side by side, the number of the conducting plates 6 is one less than the number of the voice coils 5, and any one of the conducting plates 6 is electrically conducted with only two voice coils 5.

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

1. Miniature speaker, its characterized in that: comprising

A conductive plate;

the conducting plate is positioned below or above the voice coil.

2. A micro-speaker as claimed in claim 1, wherein: the conducting plate is fixedly bonded with the voice coil.

3. A micro-speaker as claimed in claim 2, wherein: the conduction plate is long-strip-shaped, two ends of the conduction plate are exposed out of the outer side of the voice coil, welding areas are respectively arranged at two ends of the conduction plate, two welding areas are conducted mutually, one welding area is conducted with one voice coil in a welding mode, and the other welding area is conducted with the adjacent voice coil in a welding mode.

4. A micro-speaker as claimed in claim 1, wherein: still include vibrating diaphragm subassembly, the breakover plate is located the top of voice coil loudspeaker voice coil, the breakover plate with the voice coil loudspeaker voice coil is connected respectively vibrating diaphragm subassembly.

5. A micro-speaker as claimed in claim 4, wherein: the vibrating diaphragm assembly comprises a sound membrane and a ball top, the sound membrane comprises an inner fixing part, a folded ring part and an outer fixing part which are sequentially connected from inside to outside, a window is formed in the center of the inner fixing part, the ball top is connected with the inner fixing part and seals the window, and the conducting plate is connected with the ball top.

6. A micro-speaker as claimed in claim 5, wherein: the dome is positioned below the inner fixing part, a convex hull is arranged on the dome, and at least part of the conducting plate is positioned in the convex hull; or the dome is positioned above the inner fixing part, and the conducting plate is positioned in the open window.

7. A micro-speaker as claimed in claim 5, wherein: the bottom surface of the ball top is provided with an accommodating groove, and at least part of the conducting plate is positioned in the accommodating groove.

8. A micro-speaker as claimed in claim 1, wherein: the conducting plate is a circuit board or a metal plate.

9. A micro-speaker as claimed in claim 1, wherein: adjacent edges of two adjacent voice coils are contacted with each other; alternatively, a gap is provided between adjacent edges of two adjacent voice coils.

10. A micro-speaker as claimed in claim 1, wherein: the number of the voice coils is greater than or equal to three, and the voice coils with a plurality of voice coils are arranged side by side.