CN219876082U

CN219876082U - Sound producing unit

Info

Publication number: CN219876082U
Application number: CN202320800514.XU
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: 2023-04-03
Filing date: 2023-04-03
Publication date: 2023-10-20
Anticipated expiration: 2033-04-03

Abstract

The utility model discloses a sound producing unit which comprises a basin frame, a magnetic conduction plate, a vibrating diaphragm assembly, a magnetic circuit assembly and a plurality of voice coils, wherein the vibrating diaphragm assembly is connected with the basin frame and the voice coils; the magnetic circuit assembly comprises a yoke and a plurality of central magnetic assemblies, the central magnetic assemblies are arranged on the yoke, and the central magnetic assemblies are arranged in one-to-one correspondence with the voice coils; and a gap is formed between two adjacent voice coils, and the magnetic conduction plate is connected with the yoke and is arranged corresponding to the gap. This sound production unit novel structure, under the circumstances that does not change whole size and height, can greatly increase magnetic gap length, the magnetic conduction board can be with the more guide of magnetic induction line of magnet steel to voice coil loudspeaker voice coil position, and then promotes the B value, maximize performance magnet steel availability factor, simultaneously, many voice coil loudspeaker voice coil designs make the total length L of voice coil loudspeaker voice coil can be very big increase to make the BL value maximize, do benefit to the sensitivity that promotes sound production unit, increase sound production unit's loudness, and then improve sound production unit's performance.

Description

Sound producing unit

Technical Field

The utility model relates to the technical field of electroacoustic transducers, in particular to a sound generating unit.

Background

The sound generating unit is used as a common electroacoustic transducer for converting electric energy into acoustic energy, and plays an indispensable role in a sound emitting system.

Consumer electronics such as cell phones and tablet computers, and particularly large wearable electronics such as AR/VR, have been rapidly developed in recent years. Sound emitting units are an important component of such products, and users have also placed increasing demands on sound emitting units in terms of performance, size, etc.

The lightening and thinning of the sounding unit can reduce the volume of the magnetic circuit assembly and the height of the voice coil of the micro-speaker, so that the B value and the voice coil L are reduced, the sensitivity of the sounding unit is reduced, and the loudness is reduced. Therefore, how to improve the performance of sound generating units in a limited space has been a direction explored by practitioners.

Disclosure of Invention

The technical problems solved by the utility model are as follows: provided is a sound generating unit having excellent acoustic performance.

In order to solve the technical problems, the utility model adopts the following technical scheme: a sound generating unit comprising:

a basin stand;

the vibrating diaphragm assembly is connected with the basin stand;

the voice coils are connected with the vibrating diaphragm assembly, and gaps are formed between two adjacent voice coils;

the magnetic circuit assembly comprises a yoke and a plurality of central magnetic assemblies arranged on the yoke, and the central magnetic assemblies are arranged in one-to-one correspondence with the voice coils;

and the magnetic conduction plate is connected with the yoke iron and is arranged corresponding to the gap.

Further, the magnetic conductive plate is welded, glued, friction welded, clamped, riveted or fastened with the yoke through a fastener.

Further, the magnetic conduction plate and the yoke are of an integrated structure which is integrally processed and formed.

Further, the yoke is provided with a receiving groove for receiving a partial region of the magnetic conductive plate.

Further, the magnetic conductive plate comprises a first plate and a second plate which are connected, the first plate is arranged corresponding to the gap, and at least part of the area of the second plate is positioned in the accommodating groove.

Further, the entire area of the second plate is located in the receiving groove.

Further, the cross section of the magnetic conduction plate is L-shaped or inverted T-shaped.

Further, the holding groove is located the yoke is kept away from one side of vibrating diaphragm subassembly, the yoke is close to one side of vibrating diaphragm subassembly is equipped with wears the groove, wear the groove intercommunication the holding groove, the first board is kept away from the one end of second board is passed wear the groove.

Further, the material of the magnetic conduction plate is SPCC material.

Further, the magnetic circuit assembly further comprises a side magnetic assembly connected with the yoke, and a magnetic gap for the voice coil to move is formed between the side magnetic assembly and the center magnetic assembly.

The utility model has the beneficial effects that: this sound production unit novel structure, under the circumstances that does not change whole size and height, can greatly increase magnetic gap length, the magnetic conduction board can be with the more guide of magnetic induction line of magnet steel to voice coil loudspeaker voice coil position, and then promotes the B value, maximize performance magnet steel availability factor, simultaneously, many voice coil loudspeaker voice coil designs make the total length L of voice coil loudspeaker voice coil can be very big increase to make the BL value maximize, do benefit to the sensitivity that promotes sound production unit, increase sound production unit's loudness, and then improve sound production unit'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 an exploded view of a sound unit according to a first embodiment of the present utility model;

fig. 2 is a cross-sectional view of a sound generating unit according to a first embodiment of the present utility model;

FIG. 3 is an enlarged view of FIG. 2 at A;

FIG. 4 is a cross-sectional view of a partial area of a sound emitting unit according to a second embodiment of the present utility model;

FIG. 5 is a cross-sectional view of a partial area of a sound emitting unit according to a third embodiment of the present utility model;

FIG. 6 is a cross-sectional view of a partial area of a sound emitting unit according to a fourth embodiment of the present utility model;

FIG. 7 is a cross-sectional view of a partial area of a sound emitting unit of a fifth embodiment of the present utility model;

fig. 8 is a schematic structural diagram of a part of the sound generating unit according to the sixth embodiment of the present utility model;

fig. 9 is a schematic structural view of a part of the sound generating unit according to the seventh embodiment of the present utility model;

fig. 10 is a cross-sectional view of a sound emitting unit according to an eighth embodiment of the present utility model.

Reference numerals illustrate:

1. a basin stand;

2. a magnetic conductive plate; 21. a first plate; 22. a second plate;

3. a diaphragm assembly;

4. a magnetic circuit assembly; 41. a yoke; 411. a receiving groove; 412. penetrating a groove; 42. a center magnetic steel; 43. a central washer; 44. edge magnetic steel; 45. bian Huasi; 46. flanging;

5. and a voice coil.

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: the sounding unit can be applied to consumer electronic products such as mobile phones, tablet computers, wearable devices and the like.

The sound generating unit comprises a basin frame 1, a magnetic conduction plate 2, a vibrating diaphragm assembly 3, a magnetic circuit assembly 4 and a plurality of voice coils 5, wherein the vibrating diaphragm assembly 3 is connected with the basin frame 1 and the voice coils 5; the magnetic circuit assembly 4 is connected with the basin frame 1, the magnetic circuit assembly 4 comprises a yoke 41, a plurality of central magnetic assemblies and side magnetic assemblies, the central magnetic assemblies and the side magnetic assemblies are respectively arranged on the yoke 41, and the central magnetic assemblies and the voice coils 5 are arranged in a one-to-one correspondence manner; a gap is formed between two adjacent voice coils 5, and the magnetic conductive plate 2 is connected to the yoke 41 and is disposed corresponding to the gap.

The central magnetic assembly comprises a central magnetic steel 42 and a central washer 43, the central magnetic steel 42 is connected with the central washer 43 and the yoke 41, in this embodiment, the side magnetic assembly comprises side magnetic steels 44 and Bian Huasi, and the side magnetic steel 44 is connected with the Bian Huasi and the yoke 41.

In this embodiment, the number of the voice coils 5 is two, two voice coils 5 are arranged side by side, the other three sides of the central magnetic assembly, which are not adjacent to the other central magnetic assembly, are respectively and correspondingly provided with the side magnetic assemblies, and a magnetic gap for the voice coils 5 to move is formed between the side magnetic assemblies and the central magnetic assembly. In other embodiments, the number of voice coils 5 may be three, four, five or even more.

Alternatively, the magnetic conductive plate 2 is welded, glued, friction welded, clamped or riveted to the yoke 41, and of course, the magnetic conductive plate 2 and the yoke 41 may be fastened by a fastener, and the fastener includes, but is not limited to, a screw.

Preferably, the magnetic conductive plate 2 is made of a material with high magnetic permeability, and in this embodiment, the yoke 41 and the magnetic conductive plate 2 are both made of SPCC materials.

Alternatively, the voice coil 5 is wound with an enamel wire, and the section of the enamel wire may be circular or polygonal, including but not limited to rectangular, pentagonal, hexagonal, etc.

The manufacturing materials, sizes and shapes of the voice coils 5 can be the same or different, and the voice coils are designed according to actual requirements.

Example two

Referring to fig. 4, the second embodiment of the present utility model is a parallel solution of the first embodiment, and is different from the first embodiment only in the connection manner of the magnetic conduction plate 2 and the yoke 41.

In this embodiment, the magnetic conductive plate 2 and the yoke 41 are integrally formed as a single piece. That is, the assembly process of the sound generating unit does not need an additional step of assembling the magnetic conductive plate 2 and the yoke 41, which is beneficial to simplifying the assembly process of the sound generating unit, improving the assembly efficiency of the sound generating unit and reducing the manufacturing cost of the sound generating unit.

Example III

Referring to fig. 5, a third embodiment of the present utility model is a further improvement based on the first embodiment, and is different from the first embodiment in that: the yoke 41 is provided with a receiving slot 411 for receiving a partial region of the magnetically permeable plate 2.

The setting of holding tank 411 makes things convenient for the location installation of magnetic conduction board 2 to improve the packaging efficiency of sound production unit, moreover, through the size control to holding tank 411, can make holding tank 411 advance fixed magnetic conduction board 2, thereby make things convenient for the fastening of follow-up magnetic conduction board 2 and yoke 41.

Example IV

Referring to fig. 6, a fourth embodiment of the present utility model is a further improvement based on the third embodiment, and is different from the third embodiment in that: the magnetically permeable plate 2 includes a first plate 21 and a second plate 22 connected, the first plate 21 being disposed corresponding to the slit, and at least a partial region of the second plate 22 being located in the receiving slot 411.

The second plate 22 and the yoke 41 can form a larger fixing area, thereby improving the fixing effect of the magnetic conductive plate 2 and the yoke 41 and further improving the structural stability of the sound generating unit.

In order to achieve both the structural strength of the magnetic conductive plate 2 and the overall thickness of the sound generating unit, it is preferable that the entire area of the second plate 22 is located in the receiving slot 411.

In this embodiment, the cross section of the magnetic conductive plate 2 is inverted T-shaped, and in other embodiments, the cross section of the magnetic conductive plate 2 may be L-shaped or have other shapes.

Example five

Referring to fig. 7, a fifth embodiment of the present utility model is a parallel solution of the fourth embodiment, and is different from the fourth embodiment in that: the holding groove 411 is located the yoke 41 and is kept away from the one side of vibrating diaphragm subassembly 3, the yoke 41 is close to one side of vibrating diaphragm subassembly 3 is equipped with wears the groove 412, wear groove 412 intercommunication holding groove 411, first board 21 is kept away from the one end of second board 22 is passed wear groove 412.

Example six

Referring to fig. 8, a sixth embodiment of the present utility model is a parallel technical solution of the first embodiment, and is different from the first embodiment in that: in this embodiment, the side magnetic assembly has two structural forms, the first is the combination of the side magnetic steel and Bian Huasi described in the first embodiment, and the other is the turnup 46 formed by folding over a partial area of the yoke 41. In other words, in the present embodiment, the combination of the partial side magnetic steel and Bian Huasi in the first embodiment is replaced by the flange 46.

Example seven

Referring to fig. 9, a seventh embodiment of the present utility model is a parallel technical solution of the sixth embodiment, and is different from the sixth embodiment in that: the combination of each side magnet steel and Bian Huasi is replaced by a flange 46.

Example eight

Referring to fig. 10, an eighth embodiment of the present utility model is a parallel technical solution of the first embodiment, and is different from the first embodiment in that: in this embodiment, the number of voice coils 5 is three, and three voice coils 5 are arranged in a row. And a magnetic conduction plate 2 is correspondingly arranged in a gap between any two adjacent voice coils 5.

In other embodiments, three voice coils 5 may be arranged in an L shape. When the number of the voice coils 5 is four, the four voice coils 5 may be arranged in a row or in a delta shape. That is, the number and arrangement of the voice coils 5 should not be construed as limiting the present utility model.

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. Sound production unit, its characterized in that: comprising

A basin stand;

the vibrating diaphragm assembly is connected with the basin stand;

2. The sound emitting unit of claim 1, wherein: the magnetic conduction plate is welded, glued, friction welded, clamped and riveted with the yoke iron or fastened and connected through a fastener.

3. The sound emitting unit of claim 1, wherein: the magnetic conduction plate and the yoke are of an integrated structure which is integrally processed and formed.

4. The sound emitting unit of claim 1, wherein: the yoke is provided with a containing groove for containing a part of the area of the magnetic conduction plate.

5. The sound emitting unit of claim 4, wherein: the magnetic conduction plate comprises a first plate and a second plate which are connected, the first plate is arranged corresponding to the gap, and at least part of the area of the second plate is positioned in the accommodating groove.

6. The sound emitting unit of claim 5, wherein: the entire area of the second plate is located in the receiving groove.

7. The sound emitting unit of claim 5, wherein: the section of the magnetic conduction plate is L-shaped or inverted T-shaped.

8. The sound emitting unit of claim 5, wherein: the holding tank is located the yoke is kept away from one side of vibrating diaphragm subassembly, the yoke is close to one side of vibrating diaphragm subassembly is equipped with wears the groove, wear the groove intercommunication the holding tank, the first board is kept away from the one end of second board is passed wear the groove.

9. The sound emitting unit of claim 1, wherein: the material of the magnetic conduction plate is SPCC material.

10. The sound emitting unit of claim 1, wherein: the magnetic circuit assembly further comprises a side magnetic assembly connected with the yoke, and a magnetic gap for the voice coil to move is formed between the side magnetic assembly and the center magnetic assembly.