CN219999594U

CN219999594U - Sound producing unit

Info

Publication number: CN219999594U
Application number: CN202321153295.7U
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: 2023-05-12
Filing date: 2023-05-12
Publication date: 2023-11-10
Anticipated expiration: 2033-05-12

Abstract

The utility model discloses a sound producing unit which comprises a basin frame, a magnetic cover, a magnetic steel plate, a washer plate and a plurality of voice coils, wherein the magnetic cover is provided with a plurality of stamping-formed ring structures, the voice coils surround the ring structures, the voice coils and the ring structures are arranged in one-to-one correspondence, the magnetic steel plate is arranged on the magnetic cover, the magnetic steel plate is provided with a first avoiding hole for avoiding the voice coils, hua Siban is arranged on one side, away from the magnetic cover, of the magnetic steel plate, hua Siban is connected with the basin frame, and the washer plate is provided with a second avoiding hole for avoiding the voice coils. The sounding unit has fewer components, can form a magnetic loop through the cooperation of the ring structure formed by stamping on the magnetic cover and the magnetic steel plate, does not need to arrange magnetic steel and washer on the inner side of the voice coil, greatly simplifies the assembly procedure of the sounding unit, is beneficial to improving the assembly efficiency of the sounding unit and reduces the assembly cost of the sounding unit. The existence of the ring structure is also beneficial to outward heat dissipation of the sounding unit, and is beneficial to ensuring the performance and the service life of the sounding unit.

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.

In order to improve the acoustic performance of the sound generating unit, a sound generating unit with a multi-voice coil structure has been disclosed in chinese patent publication No. CN216700307U, for example, in which a large-amplitude speaker with a multi-voice coil is disclosed, and the speaker can realize a large amplitude, but the speaker has numerous parts and components, and a plurality of magnetic steels and a plurality of washers need to be adhered and fixed, so that the assembly process is complicated, resulting in high manufacturing cost.

Disclosure of Invention

The technical problems solved by the utility model are as follows: provided is a sound generating unit which is easy to assemble.

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

a basin stand;

the magnetic cover is provided with a plurality of ring structures formed by stamping;

the voice coils surround the ring structures, and are arranged in one-to-one correspondence with the ring structures;

the magnetic steel plate is arranged on the magnetic cover and is provided with a first avoiding hole for avoiding the voice coil;

hua Siban, hua Siban locate the magnet steel board is kept away from one side of magnetic shield, the washer board is connected the basin frame, the washer board has the second that is used for dodging the voice coil loudspeaker voice coil dodges the hole.

Further, the voice coil loudspeaker voice coil still includes vibrating diaphragm subassembly, vibrating diaphragm subassembly connects the basin frame with the voice coil loudspeaker voice coil.

Further, the voice coil loudspeaker further comprises a centering support piece, and the vibrating diaphragm assembly is indirectly connected with the voice coil loudspeaker and the basin frame through the centering support piece.

Further, a protruding portion is arranged on one side, away from the magnetic steel plate, of the Hua Siban, the protruding portion is located at a gap between two adjacent voice coils, and the centering support piece is provided with an avoidance groove for avoiding the protruding portion.

Further, the top surface of the ring structure is lower than or flush with the top surface of the washer plate.

Further, a slit is formed in the ring structure.

Further, the ring structure is a continuous, seamless ring frame structure.

Further, the top of the ring structure is bent and extended inwards to form a cover part, and the cover part closes an opening of one end of the ring structure far away from the magnetic cover.

Further, the cover portion is disposed parallel to the magnetic steel plate.

Further, the cover part is provided with ventilation holes.

The utility model has the beneficial effects that: the sounding unit has fewer components, can form a magnetic loop through the cooperation of the ring structure formed by stamping on the magnetic cover and the magnetic steel plate, does not need to arrange magnetic steel and washer on the inner side of the voice coil, greatly simplifies the assembly procedure of the sounding unit, is beneficial to improving the assembly efficiency of the sounding unit and reduces the assembly cost of the sounding unit. The ring structure is also beneficial to outward heat dissipation of the sounding unit, so that the phenomena of demagnetization of magnetic steel, collapse of the vibrating diaphragm, failure of glue and the like caused by overheating or overhigh temperature of the sounding unit are avoided, and the performance and the service life of the sounding unit are guaranteed; moreover, the ring structure can construct a connecting channel between the inner space of the sounding unit and the rear cavity of the sounding module, so that the actual volume of the rear cavity is increased, and the improvement of the acoustic performance of the sounding unit is facilitated.

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 a schematic structural diagram of a part of the structure of a sound generating unit according to the first embodiment of the present utility model;

fig. 4 is a cross-sectional view of a sound generating unit according to a second embodiment of the present utility model;

fig. 5 is a schematic structural diagram of a magnetic cover in a sound generating unit according to a second embodiment of the present utility model;

fig. 6 is a cross-sectional view of a sound emitting unit according to a third embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a magnetic cover in a sound generating unit according to a third embodiment of the present utility model.

Reference numerals illustrate:

1. a basin stand;

2. a diaphragm assembly;

3. a voice coil;

4. a magnetic shield; 41. a ring structure; 42. a cover portion; 43. ventilation holes;

5. a magnetic steel plate; 51. a first avoidance hole;

6. hua Siban; 61. a second avoidance hole; 62. a protruding portion;

7. centering support pieces; 71. avoiding the groove.

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 electronic equipment such as mobile phones, tablet computers, intelligent watches, game handles and the like.

The sound generating unit comprises a basin frame 1, and a vibration assembly and a magnetic circuit assembly which are respectively arranged on the basin frame 1, wherein the vibration assembly comprises a vibrating diaphragm assembly 2 and a plurality of voice coils 3 arranged on the vibrating diaphragm assembly 2, in the embodiment, the vibrating diaphragm assembly 2 comprises a sound membrane and a middle paste arranged on the sound membrane, the sound membrane is connected with the basin frame 1, and in other embodiments, the vibrating diaphragm assembly 2 can be formed by the sound membrane only without the middle paste;

the magnetic circuit assembly comprises a magnetic cover 4, a magnetic steel plate 5 and a washer plate 6, wherein the magnetic steel plate 5 is connected with the magnetic cover 4 and the Hua Siban, the Hua Siban is arranged on one side, far away from the magnetic cover 4, of the magnetic steel plate 5, and the washer plate 6 is connected with the basin frame 1; the magnetic shield 4 is provided with a plurality of stamping-formed ring structures 41, the voice coil 3 surrounds the ring structures 41, and the voice coils 3 are arranged in one-to-one correspondence with the ring structures 41; the magnetic steel plate 5 is provided with a first avoidance hole 51 for avoiding the voice coil 3, the washer plate 6 is provided with a second avoidance hole 61 for avoiding the voice coil 3, the first avoidance hole 51 is communicated with the second avoidance hole 61, preferably, the outline size of the first avoidance hole 51 is the same as that of the second avoidance hole 61, and the first avoidance hole 51 is aligned with the second avoidance hole 61. The connection mode of the washer 6 and the basin frame 1 includes, but is not limited to, adhesive connection, insert injection connection and the like.

It is easy to understand that the gap between the outer wall of the ring structure 41 and the inner wall of the first relief hole 51/the inner wall of the second relief hole 61 forms a magnetic gap for the voice coil 3 to move.

The magnetic cover 4 is preferably made of a material with high magnetic permeability, and in this embodiment, the material of the magnetic cover 4 is an SPCC material.

Optionally, the sounding unit further includes a centering support piece 7, and the diaphragm assembly 2 is indirectly connected to the voice coil 3 and the basin frame 1 through the centering support piece 7. The setting of centering piece 7 can play the effect of rectifying voice coil 3 to a certain extent, improves voice coil 3 polarization, rolls the phenomenon of vibrating, does benefit to the acoustic performance of guaranteeing the sound generating unit.

In order to enhance the magnetic field strength of the environment where the voice coils 3 are located, in this embodiment, a protruding portion 62 is provided on a side of the washer plate 6 away from the magnetic steel plate 5, the protruding portion 62 is located at a gap between two adjacent voice coils 3, the centering support piece 7 has an avoidance groove 71 for avoiding the protruding portion 62, and the protruding portion 62 and the magnetic steel plate 5 are integrally formed into an integral structure. The projections 62 better guide the direction of the magnetic field, allowing more magnetic field lines to deflect towards the ring structure 41.

The top surface of the ring structure 41 is lower than or flush with the top surface of the washer plate 6, and the ring structure 41 is high enough to perform a good magnetic conduction function, thereby being beneficial to further improving the acoustic performance of the sounding unit.

Preferably, the ring structure 41 is a continuous and seamless ring frame structure, and such a ring structure 41 can better exert the magnetic conduction effect, thereby ensuring the performance of the sound generating unit. Of course, it is also possible to have a small number of small slits in the ring structure 41 due to factors such as a machining process or machining errors, and in this case, it is considered that slits are provided in the ring structure 41.

Although in the present embodiment, the sound generating unit is a dual-voice coil 3 structure, that is, the number of voice coils 3 is two, in other embodiments, the number of voice coils 3 may be three, four or more, in detail, when the number of voice coils 3 is three, three voice coils 3 are arranged in a row or in an L shape; when the number of the voice coils 3 is four, the four voice coils 3 are arranged in a row or in two rows. Therefore, the arrangement modes of the voice coils 3 can be various under the condition of the same number of the voice coils 3, and the arrangement modes can be specifically selected according to actual needs.

At least two of the voice coils 3 may be made of the same material or different materials, that is, different voice coils 3 may be made of the same material or different materials. In this embodiment, the voice coil 3 is wound by an enameled wire, and the section of the enameled wire may be circular, polygonal, or other shapes.

Example two

Referring to fig. 4 and 5, 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 top of the ring structure 41 is folded and extended inwards to form a cover part 42, and the cover part 42 closes an opening of one end of the ring structure 41 away from the magnetic cover 4. This allows the ring structure 41 to exert a better magnetic conduction effect, thereby further improving the acoustic performance of the sound generating unit.

Preferably, the cover 42 is disposed parallel to the magnetic steel plate 5.

Example III

Referring to fig. 6 and 7, a third embodiment of the present utility model is a further improvement of the cover 42 based on the second embodiment, and is different from the second embodiment in that: the cover 42 is provided with ventilation holes 43.

The sound generating unit of the present embodiment can use the cover 42 to improve the acoustic performance, and can use the ventilation holes 43 to keep the advantages of large back cavity volume and high heat dissipation performance.

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;

2. The sound emitting unit of claim 1, wherein: still include vibrating diaphragm subassembly, vibrating diaphragm subassembly is connected the basin frame with the voice coil loudspeaker voice coil.

3. The sound emitting unit of claim 2, wherein: the loudspeaker diaphragm assembly is characterized by further comprising a centering support piece, wherein the diaphragm assembly is indirectly connected with the voice coil and the basin frame through the centering support piece respectively.

4. A sound generating unit according to claim 3, characterized in that: one side of Hua Siban, which is far away from the magnetic steel plates, is provided with a protruding part, the protruding part is positioned at a gap between two adjacent voice coils, and the centering support piece is provided with an avoidance groove for avoiding the protruding part.

5. The sound emitting unit of claim 1, wherein: the top surface of the ring structure is lower than or flush with the top surface of the washer plate.

6. The sound emitting unit of claim 1, wherein: the ring structure is provided with a slit.

7. The sound emitting unit of claim 1, wherein: the ring structure is a continuous, seamless ring frame structure.

8. The sound emitting unit of claim 1, wherein: the top of the ring structure is bent and extended inwards to form a cover part, and the cover part closes an opening of one end of the ring structure far away from the magnetic cover.

9. The sound emitting unit of claim 8, wherein: the cover part is arranged parallel to the magnetic steel plate.

10. The sound emitting unit of claim 8, wherein: the cover part is provided with ventilation holes.