CN221633945U

CN221633945U - Sounding monomer and sounding module

Info

Publication number: CN221633945U
Application number: CN202323670395.XU
Authority: CN
Inventors: 蔡晓东; 刘松; 李波波
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2023-12-29
Filing date: 2023-12-29
Publication date: 2024-08-30
Anticipated expiration: 2033-12-29

Abstract

The utility model discloses a sounding monomer and a sounding module. The sounding monomer comprises a magnetic circuit system and a vibration system, wherein a central magnetic circuit of the magnetic circuit system comprises a central magnet and a central magnetic conduction plate which are arranged in a laminated manner, the central magnet is clamped between a magnetic conduction yoke and the central magnetic conduction plate, the magnetic conduction yoke and/or the central magnetic conduction plate are/is provided with holes, the central magnet is provided with a protruding part corresponding to the holes, the protruding part is limited in the holes, the vibration system is opposite to and spaced from the central magnetic circuit, the vibration system comprises a vibrating diaphragm and a central voice coil, and the central voice coil is arranged corresponding to the central magnetic circuit and is connected to one side of the vibrating diaphragm close to the central magnetic circuit; the percentage of the projection area of the protruding part to the projection area of the center magnet is more than or equal to 10% and less than or equal to 75% along the vibration direction of the vibration system. The utility model aims to provide a thinned sounding monomer which not only realizes thinned design, but also effectively increases the thickness of a center magnet and improves mass production.

Description

Sounding monomer and sounding module

Technical Field

The utility model relates to the technical field of electroacoustic transduction, in particular to a sounding monomer and a sounding module using the sounding monomer.

Background

Sound producing monomers are important electroacoustic transduction components in consumer electronics, which find wide application as speakers, headphones, earphones, and the like. As the performance of electronic products improves, improvements in acoustic performance with respect to sound emitting monomers are also a necessary trend. In order to meet better acoustic performance, the sounding monomer often needs to be provided with a magnetic circuit system with larger size and stronger magnetic field strength.

However, as portable intelligent devices are lighter and thinner, particularly folding products, the requirements of the terminal devices on ultra-thin sounding monomers are higher and higher. Usually, the sounding monomer needs to reserve the product vibration space and the sounding pipeline, so that when the ultra-thin module design is realized, the thickness of the miniature sounding monomer in the module needs to be further reduced.

Disclosure of utility model

The utility model mainly aims to provide a sounding monomer and a sounding module, and aims to provide a thinned sounding monomer which not only realizes thinned design, but also effectively improves the magnetic field strength of a magnetic circuit and improves mass production.

In order to achieve the above object, the present utility model provides a sounding monomer including:

The magnetic circuit system comprises a magnetic guide yoke and a central magnetic circuit arranged on the magnetic guide yoke, the central magnetic circuit comprises a central magnet and a central magnetic guide plate which are arranged in a laminated mode, the central magnet is clamped between the magnetic guide yoke and the central magnetic guide plate, the magnetic guide yoke and/or the central magnetic guide plate is/are provided with an opening, the central magnet is provided with a protruding portion corresponding to the opening, and the protruding portion is limited in the opening; and

The vibration system is opposite to and spaced from the central magnetic circuit, and comprises a vibrating diaphragm and a central voice coil, wherein the central voice coil is arranged corresponding to the central magnetic circuit and is connected to one side of the vibrating diaphragm, which is close to the central magnetic circuit;

And the percentage of the projection area of the protruding part to the projection area of the center magnet is more than or equal to 10% and less than or equal to 75% along the vibration direction of the vibration system.

In an embodiment, the central magnet has a first surface and a second surface which are arranged away from each other, the first surface is connected with the central magnetic conductive plate, the second surface is connected with the magnetic conductive yoke, the central magnetic conductive plate is provided with the opening, the first surface is provided with the protruding portion in a protruding manner, the magnetic conductive yoke is provided with the opening, and the second surface is provided with the protruding portion in a protruding manner.

In an embodiment, the magnetic circuit system further includes two first magnetic circuit portions, the two first magnetic circuit portions are disposed at intervals, an accommodating space is formed between the two first magnetic circuit portions, the central magnetic circuit is disposed in the accommodating space, and each first magnetic circuit portion includes a magnetic circuit assembly;

The vibrating diaphragm is arranged in the accommodating space, the vibrating system further comprises a framework and two first voice coils, and each first voice coil is arranged corresponding to one magnetic circuit assembly and is connected with the vibrating diaphragm through the framework; along the vibration direction of the vibrating diaphragm, the top surface of the vibrating diaphragm is lower than the top surfaces of the two first magnetic circuit parts.

In an embodiment, the two magnetic circuit assemblies are arranged on the magnetic yoke, the magnetic yoke comprises a bottom wall and a side wall which are arranged at an included angle, and the side wall and the bottom wall enclose to form a containing cavity;

The magnetic yoke further comprises two side plates and a plurality of vertical plates, wherein the two side plates and the plurality of vertical plates are positioned in the accommodating cavity, the two side plates are arranged in the bottom wall at intervals, the accommodating space is positioned among the plurality of side plates, one side, facing away from the accommodating space, of each side plate is enclosed with the side wall to form an accommodating space, each magnetic circuit assembly is arranged in one accommodating space and is spaced from the side wall and the side plate to form a first magnetic gap, the plurality of vertical plates are arranged in the accommodating space at intervals, and the central magnetic circuit is positioned among the plurality of vertical plates and is spaced from the vertical plates to form a central magnetic gap;

One end of the central voice coil is suspended in the central magnetic gap, and one end of each first voice coil is suspended in one first magnetic gap.

In an embodiment, the bottom wall is provided with a through hole adjacent to each side plate and each vertical plate, each side plate is formed by bending one side of the bottom wall adjacent to the through hole towards the inside of the containing cavity, and each vertical plate is formed by bending one side of the bottom wall adjacent to the through hole towards the inside of the containing cavity.

In an embodiment, the sounding unit further includes a cover plate, and the cover plate covers the through hole.

In an embodiment, the bottom wall, the vertical plate, the side plate and the side wall are integrally formed;

And/or the side wall is arranged around the periphery of the bottom wall;

And/or the magnetic conduction yoke is also provided with a plurality of leakage holes communicated with the accommodating cavity, wherein the leakage holes comprise a plurality of leakage holes, and the plurality of leakage holes are arranged on the side wall at intervals;

And/or, each first magnetic circuit part further comprises a cover body, each cover body covers one magnetic circuit assembly and is connected with the side wall and the side plate, and the periphery of the cover body extends towards the accommodating space to form an extension part; the vibrating diaphragm is provided with two first side edges and two second side edges which are connected end to end, the second side edges extend along the arrangement direction of the two first magnetic circuit parts, the two second side edges are respectively connected with the side walls, and the two first side edges are connected with the extension parts;

And/or, the skeleton includes first supporting part, first connecting portion and the second supporting part that are connected, first supporting part with the central part of vibrating diaphragm is connected, the second supporting part stretches into in the accommodation space, and with first voice coil loudspeaker voice coil is connected, the curb plate has dodges the breach of dodging of skeleton.

In one embodiment, each of the magnetic circuit assemblies includes:

At least two first magnets, at least two first magnets are laminated on the magnetic conduction yoke along the vibration direction of the vibrating diaphragm; and

At least one first magnetic conduction plate, wherein the first magnetic conduction plate is clamped between two adjacent first magnets;

The first magnets magnetize along the vibrating direction of the vibrating diaphragm, and the magnetizing directions of two adjacent first magnets positioned on two sides of the first magnetic conduction plate are opposite.

In an embodiment, the vibration system further includes a centering support, the centering support including an outer fixing portion, an inner fixing portion, and a spring arm portion connecting the outer fixing portion and the inner fixing portion, the outer fixing portion being connected with the side wall, the inner fixing portion being connected with the bobbin and being connected with the first voice coil through the bobbin.

The utility model also provides a sounding module, which comprises:

a module housing; and

Above-mentioned sound production monomer, sound production monomer is located the module casing.

According to the sounding monomer, the magnetic circuit system is arranged to be the magnetic guide yoke and the central magnetic circuit, and the central magnetic circuit is arranged to be the central magnet and the central magnetic guide plate which are arranged in a stacked manner, so that the central magnet is clamped between the magnetic guide yoke and the central magnetic guide plate, the opening is formed in the magnetic guide yoke and/or the central magnetic guide plate, the bulge is arranged in the opening corresponding to the opening, the bulge is limited in the opening, the positioning and the installation of the central magnet of the central magnetic circuit can be realized by utilizing the limit fit of the bulge and the opening, and meanwhile, the thickness of the central magnet is increased by utilizing the bulge of the central magnetic circuit, so that the thinned central magnet is prevented from being broken in the transportation, cleaning and magnetizing processes, the mass production is improved, and the falling reliability yield of a finished product is improved; meanwhile, the percentage of the projection area of the protruding part and the projection area of the center magnet is more than or equal to 10% and less than or equal to 75% along the vibration direction of the vibration system, so that the thickness of the center magnet is further ensured, and the structural strength of the center magnet is effectively ensured; further through utilizing the central voice coil to correspond the setting of central magnetic circuit to connect in the one side that the vibrating diaphragm is close to central magnetic circuit, thereby utilize central magnet to provide bigger magnetic circuit for central voice coil, promote BL value, with single sound effect and the acoustic performance of promotion sound production.

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 a schematic diagram of a sounding monomer according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a sound-producing monomer according to an embodiment of the present utility model;

FIG. 3 is an exploded view of a sound emitting unit according to an embodiment of the present utility model;

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

FIG. 5 is a schematic cross-sectional view of another direction of a sound emitting unit according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram showing a current flow structure of a centering support in series with two first voice coils and a center voice coil according to another embodiment of the present utility model;

FIG. 7 is a schematic diagram of a sound generating unit according to another embodiment of the present utility model;

FIG. 8 is a schematic cross-sectional view of a sound emitting unit according to another embodiment of the present utility model;

FIG. 9 is a schematic diagram illustrating a current flow structure of a centering support connected in series with two first voice coils according to an embodiment of the present utility model;

FIG. 10 is a schematic diagram of a magnetic yoke according to an embodiment of the present utility model;

FIG. 11 is a schematic view of a magnetic yoke according to another embodiment of the present utility model;

FIG. 12 is a schematic view of a center magnet according to an embodiment of the present utility model;

FIG. 13 is a schematic diagram of a diaphragm according to an embodiment of the present utility model;

FIG. 14 is a schematic view of a centering support according to an embodiment of the present utility model;

FIG. 15 is a schematic view of a centering support according to another embodiment of the present utility model;

FIG. 16 is a schematic diagram illustrating a sound module according to an embodiment of the present utility model;

FIG. 17 is a schematic cross-sectional view of a sound module according to an embodiment of the utility model;

FIG. 18 is a schematic diagram of a sound module according to another embodiment of the present utility model;

FIG. 19 is a schematic cross-sectional view of a sound module according to another embodiment of the utility model;

FIG. 20 is a schematic cross-sectional view of another view of a sound module according to another embodiment of the present utility model.

Reference numerals illustrate:

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.

Detailed Description

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 all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Meanwhile, the meaning of "and/or" and/or "appearing throughout the text is to include three schemes, taking" a and/or B "as an example, including a scheme, or B scheme, or a scheme that a and B satisfy simultaneously.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. 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 related art, the magnetic circuit in the sounding monomer is generally a single magnetic circuit, and the magnetic circuit and the vibrating diaphragm are opposite or opposite, namely, the magnetic circuit and the vibrating diaphragm are arranged up and down in the vibrating direction of the vibrating diaphragm, and the arrangement mode causes that the sounding monomer is difficult to provide a larger magnetic circuit electromagnetic conversion factor BL, and meanwhile, the heat dissipation of the product during working is also not facilitated. When the sounding monomer is applied to the module, a product vibration-up space and a sounding pipeline are required to be reserved. Therefore, when the ultra-thin module design is implemented, the thickness of the micro sound generating unit in the module needs to be further reduced.

Based on the above-described ideas and problems, the present utility model proposes a sounding cell 100. In this embodiment, the sounding unit 100 is configured by disposing two first magnetic circuit portions 12 at two ends of the sounding unit 100, so that an accommodating space 117 is formed between the two first magnetic circuit portions 12, thereby providing an installation and vibration space for the diaphragm 21 of the vibration system 2 by using the accommodating space 117, and each first voice coil 23 is disposed corresponding to the magnetic circuit assembly 121 of each first magnetic circuit portion 12 and is connected with the diaphragm 21 by the frame 22, so that the magnetic circuit system 1 and the diaphragm 21 are horizontally arranged in the vibration direction of the diaphragm 21, i.e. in the thickness direction of the sounding unit 100, instead of being disposed up and down, reducing the thickness dimension of the sounding unit 100, and simultaneously realizing maximum utilization of the product thickness space.

Meanwhile, since the vibrating diaphragm 21 is arranged in the accommodating space when vibrating, the sounding module 400 does not need to reserve additional vibrating space, which is beneficial to further thinning the sounding module 400 and the whole machine end; and the two first magnetic circuit portions 12 are located at two sides of the diaphragm 21 and are not opposite or opposite to the diaphragm 21, so that the thickness of the first magnets 1211 of the two first magnetic circuit portions 12 is increased more than that of the conventional structure, the mass productivity is higher, and the heat dissipation area can be effectively increased by utilizing the two first magnetic circuit portions 12, which is beneficial to heat dissipation of the sounding monomer 100 during working.

It is to be understood that the sounding unit 100 is applied to the sounding module 400 or an electronic device, and the sounding module 400 or the electronic device may be a smart watch, a mobile phone, a sound device, a computer, an earphone, a television, or the like, which is not limited herein.

Referring to fig. 1 to 15 in combination, in the embodiment of the present utility model, the sounding unit 100 includes a magnetic circuit system 1 and a vibration system 2, the magnetic circuit system 1 includes a magnetic yoke 11 and a central magnetic circuit 14 disposed on the magnetic yoke 11, the central magnetic circuit 14 includes a central magnet 141 and a central magnetic conductive plate 142 that are stacked, the central magnet 141 is sandwiched between the magnetic yoke 11 and the central magnetic conductive plate 142, the magnetic yoke 11 and/or the central magnetic conductive plate 142 is provided with an opening 15, the central magnet 141 is provided with a protrusion 1412 corresponding to the opening 15, the protrusion 1412 is limited in the opening 15, the vibration system 2 is opposite to and spaced from the central magnetic circuit 14, the vibration system 2 includes a diaphragm 21 and a central voice coil 24, and the central voice coil 24 is disposed corresponding to the central magnetic circuit 14 and is connected to one side of the diaphragm 21 near the central magnetic circuit 14; wherein, the percentage of the projected area of the protrusion 1412 to the projected area of the center magnet 141 is 10% or more and 75% or less along the vibration direction of the vibration system 2.

In the present embodiment, the sound generating unit 100 is a micro speaker. The magnetic yoke 11 of the magnetic circuit 1 in the sounding unit 100 is disposed opposite to the vibration system 2. The center magnet 141 and the center magnetically permeable plate 142 of the center magnetic circuit 14 are laminated on the magnetically permeable yoke 11.

Alternatively, the center magnet 141 and the center magnetically permeable plate 142 may be selected to have plate-like structures. Of course, in other embodiments, the central magnet 141 and the central magnetic conductive plate 142 may be provided in a ring structure or a plurality of bar structures, which is not limited herein.

In the present embodiment, as shown in fig. 2 to 6, an opening 15 is provided in the magnetic yoke 11 and/or the central magnetic plate 142, and a protrusion 1412 is provided in the central magnet 141 corresponding to the opening 15, such that the protrusion 1412 is limited in the opening 15. Such an arrangement can allow the central magnet 141 to increase structural strength by providing the protrusion 1412, avoiding the breakage or the like of the central magnet 141 during transportation, cleaning, magnetizing due to the reduced thickness.

It can be appreciated that the center magnet 141 can effectively increase the thickness and structural strength of the center magnet 141 by providing the protrusion 1412, thereby improving mass productivity. In this embodiment, as shown in fig. 3 to 6 and 12, the center magnet 141 has a first surface 1411 and a second surface disposed away from each other, the first surface 1411 is connected to the center magnetically permeable plate 142, and the second surface is connected to the magnetic yoke 11.

In one embodiment, the central magnet 141 has a first surface 1411 and a second surface disposed away from each other, the first surface 1411 is connected to the central magnetic conductive plate 142, the second surface is connected to the magnetic conductive yoke 11, the central magnetic conductive plate 142 has an opening 15, the first surface 1411 has a protrusion 1412, the magnetic conductive yoke 11 has an opening 15, and the second surface has a protrusion 1412.

Of course, in other embodiments, the central magnetic conductive plate 142 is provided with an opening 15, the first surface 1411 is convexly provided with a protrusion 1412, and the protrusion 1412 is limited in the opening 15; alternatively, the magnetic yoke 11 is provided with an opening 15, and the second surface is provided with a protrusion 1412, and the protrusion 1412 is limited to the opening 15, which is not limited herein.

Alternatively, the percentage of the projected area of the protrusion 1412 to the projected area of the center magnet 141 is 75% or less in the vibration direction of the vibration system 2. In the present embodiment, the percentage of the projected area of the protrusion 1412 to the projected area of the first surface 1411/the second surface of the center magnet 141 is less than or equal to 75%, so that the problem that the center magnet 141 is too thin and easily broken can be effectively solved. Alternatively, the percentage of the projected area of the protrusion 1412 to the projected area of the center magnet 141 is 10% or more in the vibration direction of the vibration system 2.

According to the sounding single body 100, the magnetic circuit system 1 is arranged to be the magnetic yoke 11 and the central magnetic circuit 14, and the central magnetic circuit 14 is arranged to be the central magnet 141 and the central magnetic conduction plate 142 which are arranged in a stacked manner, so that the central magnet 141 is clamped between the magnetic yoke 11 and the central magnetic conduction plate 142, the opening 15 is arranged on the magnetic yoke 11 and/or the central magnetic conduction plate 142, and the bulge 1412 is arranged on the central magnet 141 corresponding to the opening 15, so that the bulge 1412 is limited in the opening 15, the positioning and the installation of the central magnet 141 of the central magnetic circuit 14 can be realized by the limit fit of the bulge 1412 and the opening 15, and meanwhile, the thickness of the central magnet 141 is increased by the bulge 1412, so that the thinned central magnet 141 is prevented from being cracked in the transportation, cleaning and magnetizing processes, the mass production is improved, and the falling reliability yield of a finished product is improved; meanwhile, in the vibration direction of the vibration system 2, the percentage of the projected area of the protrusion 1412 to the projected area of the center magnet 141 is 10% or more and 75% or less, thereby further securing the thickness of the center magnet 141 to effectively secure the structural strength of the center magnet 141; further, the central voice coil 24 is arranged corresponding to the central magnetic circuit 141 and is connected to one side of the diaphragm 21 close to the central magnetic circuit 14, so that a larger magnetic circuit is provided for the central voice coil 24 by using the central magnet 141, and the BL value is improved, so that the sound production effect and the acoustic performance of the sound production unit 100 are improved.

In an embodiment, the magnetic circuit system 1 further includes two first magnetic circuit portions 12, the two first magnetic circuit portions 12 are spaced apart, an accommodating space 117 is formed between the two first magnetic circuit portions 12, the central magnetic circuit 14 is disposed in the accommodating space 117, and each first magnetic circuit portion 12 includes a magnetic circuit assembly 121; the vibrating diaphragm 21 is arranged in the accommodating space 117, the vibrating system 2 further comprises a framework 22 and two first voice coils 23, and each first voice coil 23 is arranged corresponding to one magnetic circuit assembly 121 and is connected with the vibrating diaphragm 21 through the framework 22; along the vibration direction of the diaphragm 21, the top surface of the diaphragm 21 is lower than the top surfaces of the two first magnetic circuit portions 12.

It will be appreciated that the direction in which the diaphragm 21 vibrates is defined as a first direction, the direction in which the two first magnetic circuit portions 12 are arranged is defined as a second direction, and the third direction and the first direction and the second direction are disposed perpendicular to each other. In this embodiment, the two first magnetic circuit portions 12 are arranged at intervals along the second direction, that is, the two first magnetic circuit portions 12 and the diaphragm 21 are arranged sequentially along the second direction, the two first voice coils 23 are arranged at intervals along the second direction, and each first voice coil 23 corresponds to the magnetic circuit assembly 121 of one first magnetic circuit portion 12. Alternatively, each of the first voice coils 23 is provided extending in the third direction.

It should be noted that, by disposing the two first magnetic circuit portions 12 on two sides of the diaphragm 21, that is, the two first magnetic circuit portions 12 and the diaphragm 21 are not disposed up and down in the vibration direction of the diaphragm 21, but disposed left and right, that is, the two first magnetic circuit portions 12 and the diaphragm 21 are sequentially disposed in the direction perpendicular to the vibration direction of the diaphragm 21, so that the first magnetic circuit portions 12 are not opposite to the diaphragm 21, thereby providing sufficient vibration space for the diaphragm 21 by using the accommodating space 117, and the first magnetic circuit portions 12 are not opposite to the diaphragm 21, so that the thickness of the first magnetic circuit portions 12 in the vibration direction of the diaphragm 21 is not reserved for the diaphragm 21, so that the thickness of the first magnetic circuit portions 12 in the vibration direction of the diaphragm 21 is effectively increased compared with the magnetic circuit system opposite to the diaphragm 21 in the conventional sounding monomer, thereby effectively improving the magnetic field performance and strength, and improving the BL value and the acoustic performance of the sounding monomer 100; meanwhile, the two first magnetic circuit portions 12 are located at both sides of the diaphragm 21, so that opposite sides of the diaphragm 21 can be fixedly connected with the two first magnetic circuit portions 12 to achieve mounting fixation.

It can be understood that each first magnetic circuit portion 12 includes a magnetic circuit assembly 121, each first voice coil 23 is disposed corresponding to one magnetic circuit assembly 121 and is connected to the diaphragm 21 through the frame 22, that is, each first voice coil 23 of the two first voice coils 23 corresponds to each magnetic circuit assembly 121 of the two first magnetic circuit portions 12 and is connected to the diaphragm 21 through the frame 22, so that the two first voice coils 23 respectively drive the diaphragm 21 to vibrate and sound under the magnetic field effect of the two first magnetic circuit portions 12, thereby effectively improving the driving force, and further improving the BL value and the acoustic performance of the sound generating unit 100.

In the present embodiment, the magnet yoke 11 may be selected to be an integrally formed structure, so that the consistency of the mounting of the two first magnetic circuit portions 12 on the magnet yoke 11 is ensured, thereby ensuring the synchronism of the vibration of both sides of the diaphragm 21 with the two first voice coils 23. The magnetically conductive yoke 11 is square. Alternatively, the magnetic yoke 11 is rectangular in configuration, i.e., the magnetic yoke 11 has two major and two minor sides 1113, 1114 that are joined end to end. Alternatively, the two first magnetic circuit portions 12 are arranged at intervals along the extending direction of the long axis side 1113, and the diaphragm 21 is located between the two first magnetic circuit portions 12, at which time the two first magnetic circuit portions 12 and the diaphragm 21 are arranged in sequence along the extending direction of the long axis side 1113.

Of course, in other embodiments, the magnetic yoke 11 may be configured as a split structure, that is, the magnetic yoke 11 includes two lower yokes, which respectively correspond to the two first magnetic circuit portions 12, and the accommodating space 117 formed between the two first magnetic circuit portions 12 has a through cavity structure with two open ends, which is not limited herein.

In this embodiment, the two first magnetic circuit portions 12 are located at two sides of the diaphragm 21 and do not overlap with the diaphragm 21 in the vibration direction of the diaphragm 21, at this time, there is no need to correspond to the diaphragm 21, that is, there is no need to reserve space for vibration of the diaphragm 21 in the height direction of the first magnetic circuit portions 12, at this time, the thickness from the surface of the first magnetic circuit portion 12 on the side of the back guide yoke 11 to the bottom wall 111 of the magnetic yoke 11 on the side of the back guide yoke 12 is the thickness or the height of the sounding unit 100 in the vibration direction of the diaphragm 21, so that the sounding unit 100 is effectively thinned; at the same time, the thickness of the first magnetic circuit portion 12 in the vibration direction of the diaphragm 21 can be effectively increased, thereby effectively improving the magnetic field performance of the first magnetic circuit portion 12 and increasing the BL value.

It can be understood that by making the top surface of the diaphragm 21 lower than the surface of the first magnetic circuit portion 12 on the side facing away from the magnetic yoke 11, the thickness or height of the sound generating unit 100 in the vibration direction of the diaphragm 21 can be effectively ensured, and the amplitude of the diaphragm 21 in the vibration direction thereof can be ensured. It should be noted that, when the sounding monomer 100 is applied to a module or an electronic device, the top surface of the diaphragm 21 is lower than the surface of the first magnetic circuit portion 12 on one side opposite to the magnetic yoke 11, so that the housing of the module or the electronic device does not need to reserve the vibration space of the diaphragm 21, and the thickness of the module or the electronic device can be further reduced, thereby realizing thinning.

According to the sounding monomer 100, the magnetic circuit system 1 is arranged to be the magnetic guide yoke 11 and the two first magnetic circuit parts 12, the magnetic guide yoke 11 is arranged to be the two long axis sides 1113 and the two short axis sides 1114 which are connected end to end, the two first magnetic circuit parts 12 are arranged to be the magnetic guide yoke 11 at intervals along the extending direction of the long axis sides 1113, the accommodating space 117 is formed between the two first magnetic circuit parts 12, each first magnetic circuit part 12 comprises the magnetic circuit assembly 121, so that the accommodating space 117 is utilized to provide mounting and vibrating space for the vibrating diaphragm 21 of the vibrating system 2, projections of the vibrating diaphragm 21 and the two first magnetic circuit parts 12 on the magnetic guide yoke 11 are not overlapped, so that the vibrating diaphragm 21 has enough vibrating space, the thickness of the first magnetic circuit parts 12 in the vibrating direction of the vibrating diaphragm 21 is not influenced, and the thickness of the first magnetic circuit parts 12 in the vibrating direction of the vibrating diaphragm 21 is increased, compared with the conventional sounding monomer and the magnetic circuit assembly which are arranged in the up-down direction, the thickness of the sounding monomer 100 in the vibrating direction of the vibrating diaphragm is effectively thinned; meanwhile, by utilizing the corresponding arrangement of the two first voice coils 23 and the two first magnetic circuit parts 12 respectively and enabling the two first voice coils 23 to be connected with the vibrating diaphragm 21 through the framework 22, larger magnetic circuits can be provided for the two first voice coils 23 respectively through the magnetic circuit components 121 of the two first magnetic circuit parts 12, BL values are improved, and the heat dissipation area can be effectively increased by utilizing the magnetic circuit components 121 of the two first magnetic circuit parts 12, so that heat dissipation is facilitated when the sounding monomer 100 works; further through setting up the magnetic conduction yoke 11 to be the integral structure that the rectangle set up to reinforcing magnetic circuit 1's structural strength ensures the installation and the location of the magnetic circuit subassembly 121 of two first magnetic circuit parts 12 and two first voice coils 23, thereby guarantees the uniformity and the vibration effect of vibrating diaphragm 21 along with two first voice coils 23 vibration, in order to promote sound production effect and the acoustic performance of sound production monomer 100.

In one embodiment, the two magnetic circuit assemblies 121 are disposed on the magnetic guide 11, the central magnetic circuit 14 is disposed in the accommodating space 117 and is opposite to and spaced from the diaphragm 21 in the vibration direction of the diaphragm 21, and the top surface of the central magnetic circuit 14 is lower than the top surfaces of the two first magnetic circuit portions 12.

In the present embodiment, as shown in fig. 3 to 6, by disposing the center magnetic circuit 14 in the accommodation space 117, the center magnetic circuit 14 is located in the vibration space, and is disposed opposite to and spaced from the diaphragm 21. Alternatively, the projection of the central magnetic circuit 14 in the vibration direction is located within the projection range of the diaphragm 21 in the vibration direction. And set up center voice coil 24 for the one end and the vibrating diaphragm 21 of center voice coil 24 are connected to set up corresponding with center magnetic circuit 14, so can further improve the magnetic field strength of sound production monomer 100, increase magnetic field driving force, further improve the BL value, with the acoustics performance that promotes sound production monomer 100.

It can be understood that the thickness of the central magnetic circuit 14 in the vibration direction of the diaphragm 21 is smaller than the thickness of the magnetic circuit 1 in the vibration direction of the diaphragm 21, so that the thickness or the height of the sounding unit 100 in the vibration direction of the diaphragm 21 can be effectively ensured. Compared with the traditional sounding monomer, the sounding monomer 100 not only realizes thin design, but also improves magnetic field performance and effectively improves BL value. Alternatively, the thickness of the central magnetic circuit 14 is less than or equal to 1/2 of the thickness of the first magnetic circuit portion 12 in the vibration direction of the diaphragm 21.

Alternatively, the diaphragm 21 is square in shape. In this embodiment, the diaphragm 21 has two first sides 216 and two second sides 217 connected end to end, the two first sides 216 are respectively connected to the two first magnetic circuit portions 12, and the two second sides 217 are respectively connected to the magnetic yoke 11. It can be appreciated that the diaphragm 21 is directly connected with the magnetic circuit system 1, and the housing structure is omitted, so that the production cost is reduced, the structure is simplified, and meanwhile, the diaphragm 21, the two first magnetic circuit portions 12 and the magnetic yoke 11 enclose to form a vibration space. In the present embodiment, the first side 216 of the diaphragm 21 extends in the third direction, and the second side 217 of the diaphragm 21 extends in the second direction.

Of course, in other embodiments, the sounding unit 100 further includes a housing or a casing, where the housing or casing is disposed between the diaphragm 21 and the magnetic yoke 11, that is, the two second sides 217 of the diaphragm 21 are respectively connected to the magnetic yoke 11 through the housing or casing, which is not limited herein. Alternatively, the housing or shell and the magnetic yoke 11 may be provided as an integrally formed structure, which is not limited herein.

In one embodiment, the sounding unit 100 includes a housing, where the housing is used to accommodate and fix the vibration system 2 and the magnetic circuit system 1, the housing includes a bottom plate and a side wall plate, and the side wall plate and the bottom plate enclose an installation space; the magnetic yoke 11 is fixed on the surface of the bottom plate; or the bottom plate is provided with a through hole, and the magnetic yoke 11 is embedded in the through hole; or the magnetic yoke 11 is integrally formed with the base plate.

It will be appreciated that the housing may alternatively be of square frame construction, i.e. the housing has a cavity construction with two open ends, the magnetically permeable yoke 11 being connected to one side of the housing, the two first magnetic circuit portions 12 and the diaphragm 21 covering the opening in the other side of the housing and being opposite the magnetically permeable yoke 11. Alternatively, the housing and the magnetic yoke 11 may be integrally injection molded; or, the housing and the magnetic yoke 11 are connected by welding or bonding, and the present invention is not limited thereto. Of course, in other embodiments, the sounding unit 100 may not be provided with a housing, and the two first magnetic circuit portions 12 and the diaphragm 21 are directly connected to the magnetic yoke 11, which is not limited herein.

In the present embodiment, the housing is provided as the bottom plate and the side wall plate such that the side wall plate and the bottom plate enclose an installation space, thereby accommodating and fixing the vibration system 2 and the magnetic circuit system 1 by using the installation space. Optionally, the magnetic yoke 11 is fixed to the surface of the base plate, for example, by welding or bonding, which is not limited herein. Of course, the magnetically conductive yoke 11 and the bottom plate may be integrally formed, for example, by integral injection molding, integral stretching, or press molding, and the like, and the present invention is not limited thereto.

Of course, in other embodiments, the through hole is formed in the bottom plate, and the magnetic yoke 11 is embedded in the through hole, so that the magnetic yoke 11 seals the through hole of the bottom plate, and the like, which is not limited herein.

In the present embodiment, the sounding monomer 100 is applied to an electronic device, that is, the sounding monomer 100 can be installed in the electronic device through a housing. It should be noted that, the housing of the sounding unit 100 may be a housing or a box structure independent of the electronic device, and at this time, the components such as the magnetic circuit system 1 and the vibration system 2 of the sounding unit 100 are integrated into a whole structure by using the housing, so as to facilitate disassembly and assembly. Of course, the housing of the sounding unit 100 may be integrally formed with the housing or the case of the electronic device, so as to effectively improve the structural strength and sealing performance.

It can be understood that the housing is configured to accommodate the vibration system 2, the magnetic circuit system 1, and the like, so that the sounding unit 100 can be used as a separate component in an electronic device or a sounding module, which is not limited herein. Of course, in other embodiments, the sound generating unit 100 may be a module structure, and in this case, the vibration system 2, the magnetic circuit system 1, and other structures of the sound generating unit 100 are respectively mounted as a plurality of independent components on the housing of the module structure, which is not limited herein.

In one embodiment, the magnetic yoke 11 includes a bottom wall 111 and a side wall 112 disposed at an angle, and the side wall 112 and the bottom wall 111 enclose a cavity 113.

In the present embodiment, as shown in fig. 2 to 5, 8, 10 and 11, the magnetic yoke 11 is an integral structure, and the bottom wall 111 and the side wall 112 are integrally formed. Optionally, the side wall 112 is disposed perpendicular to the bottom wall 111.

The side wall 112 may be formed by bending the periphery of the bottom wall 111 toward one side. Of course, in other embodiments, the side wall 112 is in an annular structure, and the side wall 112 and the bottom wall 111 are connected by welding or bonding, which is not limited herein.

It will be appreciated that the two first magnetic circuit portions 12 are spaced apart in the cavity 113 of the magnetic yoke 11, i.e. the two first magnetic circuit portions 12 are connected to the bottom wall 111 of the magnetic yoke 11 such that the two first magnetic circuit portions 12 are spaced apart and form an open-sided accommodation space 117 with the bottom wall 111 of the magnetic yoke 11. In the present embodiment, the diaphragm 21 is disposed in the accommodating space 117 and between the two first magnetic circuit portions 12, two first sides 216 of the diaphragm 21 are respectively connected to the two first magnetic circuit portions 12, and two second sides 217 are respectively connected to the side walls 112, so that the diaphragm 21 is spaced from the bottom wall 111.

In an embodiment, the magnetic guiding yoke 11 further includes two side plates 114 and a plurality of vertical plates 116 located in the accommodating cavity 113, the two side plates 114 are disposed at intervals on the bottom wall 111, the accommodating space 117 is located between the two side plates 114, a side of each side plate 114 facing away from the accommodating space 117 encloses with the side wall 112 to form an accommodating space 1141, each magnetic circuit assembly 121 is disposed in one accommodating space 1141 and is spaced from the side wall 112 and the side plate 114 to form a first magnetic gap 13, one end of the first voice coil 23 is suspended in the first magnetic gap 13, the plurality of vertical plates 116 are spaced in the accommodating space 117, the central magnetic circuit 14 is located between the plurality of vertical plates 116 and is spaced from the vertical plates 116 to enclose and form a central magnetic gap 16, and one end of the central voice coil 24 is suspended in the central magnetic gap 16.

In this embodiment, as shown in fig. 10 and 11, two side plates 114 are disposed on the bottom wall 111 of the magnetic yoke 11, such that the two side plates 114 are disposed in the accommodating cavity 113 at intervals, so that an accommodating space 117 is formed between the two side plates 114, and a side of each side plate 114 facing away from the accommodating space 117 encloses with the side wall 112 to form an accommodating space 1141, so that the magnetic circuit assembly 121 of the first magnetic circuit portion 12 is conveniently mounted and fixed by using the accommodating space 1141, such that the magnetic circuit assembly 121 of each first magnetic circuit portion 12 is disposed in one accommodating space 1141 and is spaced from the side wall 112 and the side plate 114 to enclose and form the first magnetic gap 13. Optionally, the side plate 114 is disposed perpendicular to the bottom wall 111.

It can be understood that a first magnetic gap 13 is formed between each first magnetic circuit portion 12 of the two first magnetic circuit portions 12 and the magnetic conductive yoke 11, so that each first voice coil 23 of the two first voice coils 23 is disposed in one first magnetic gap 13 and is connected with the diaphragm 21 through the frame 22, and thus the two first voice coils 23 drive the diaphragm 21 to vibrate and sound under the magnetic field effect of the two first magnetic circuit portions 12, and effectively improve the driving force, thereby improving the BL value and the acoustic performance of the sound-producing unit 100.

Alternatively, the two side plates 114 are arranged at intervals in the longitudinal direction of the magnet yoke 11. In the present embodiment, the two side plates 114 are arranged at intervals along the long axis side 1113 of the yoke 11 such that the two first magnetic circuit portions 12 are arranged at intervals along the extending direction of the long axis side 1113. Alternatively, the side plate 114 and the bottom wall 111 are integrally formed, so that the processing steps of the magnetic yoke 11 can be simplified, and the structural strength of the magnetic yoke 11 can be improved.

In this embodiment, as shown in fig. 10 and 11, two ends of each side plate 114 are further formed with an avoidance gap 1143 communicating the accommodating space 1141 and the accommodating space 117, and one end of the skeleton 22 away from the diaphragm 21 passes through the avoidance gap 1143 and is connected to the first voice coil 23. It will be appreciated that this arrangement facilitates connection of the armature 22 to the voice coil 23 such that the diaphragm 21 is connected to the two voice coils 23 on either side of the diaphragm 21 via the armature 22.

In order to ensure the balance of the air pressure inside and outside the sounding monomer 100 during the vibration of the diaphragm 21, in an embodiment, the magnetic conductive yoke 11 is further provided with a leakage hole 1142 communicating with the cavity 113. It will be appreciated that the leak holes 1142 communicate the internal vibration space of the sound emitting unit 100 with the external air pressure. In the present embodiment, the leakage holes 1142 include a plurality of leakage holes 1142 spaced apart from the sidewall 112.

Optionally, a plurality of leakage holes 1142 are spaced apart from the side wall 112 of the magnetic yoke 11. I.e., a plurality of leakage holes 1142 are spaced apart along the circumferential direction of the side wall 112. Of course, in other embodiments, the leakage hole 1142 may be disposed on the bottom wall 111 of the magnetic yoke 11, which is not limited herein. Alternatively, the leak holes 1142 may be circular holes, oval holes, bar holes, triangular holes, square holes or polygonal, shaped holes, etc., without limitation.

In one embodiment, as shown in fig. 10 and 11, a through hole 1112 is disposed adjacent to each side plate 114 on the bottom wall 111. Optionally, each side plate 114 is formed by bending a side of the bottom wall 111 adjacent to the through hole 1112 toward the inside of the cavity 113. Optionally, the bottom wall 111 is provided with a through hole 1112 adjacent to each vertical plate 116, and each vertical plate 116 is formed by bending a side of the bottom wall 111 adjacent to the through hole 1112 towards the inside of the cavity 113. In this way, the structural strength of the yoke 11 is improved.

In an embodiment, the sounding unit 100 further includes a cover plate 115, and the cover plate 115 covers the through hole 1112. In this embodiment, as shown in fig. 2 to 5, 8, 10 and 11, by providing the cover plate 115, the through hole 1112 is covered and sealed by the cover plate 115, so when the sounding unit 100 is installed in the module housing or the housing of the electronic device, in order to reduce the thickness or the height of the module or the electronic device in the vibration direction of the diaphragm 21, the bottom wall 111 of the magnetic yoke 11 of the sounding unit 100 is exposed out of the module housing or the housing of the electronic device, and at this time, the cover plate 115 seals the through hole 1112 to ensure the sounding effect of the sounding unit 100, and prevent impurities and the like from entering the sounding unit 100 through the through hole 1112, thereby affecting the sounding performance of the sounding unit 100.

Optionally, the bottom wall 111 of the magnetic yoke 11 is provided with a through hole 1112 adjacent to each side plate 114, and the cover plates 115 include two, and each cover plate 115 covers a through hole 1112, which is not limited herein. It will be appreciated that the thickness of the cover plate 115 is less than the thickness of the bottom wall 111 of the magnetic yoke 11. In this embodiment, the cover 115 is connected to the bottom wall 111 of the magnetic yoke 11 at a side facing away from the cavity 113.

Of course, in other embodiments, the cover plate 115 may be configured as an annular integrated structure, and the annular cover plate 115 covers the plurality of through holes 1112 at the same time, which is not limited herein.

In order to further reduce the thickness or height of the sounding body 100 in the vibration direction of the diaphragm 21, the external appearance of the sounding body 100 is improved. In an embodiment, a limiting groove 1111 is further disposed on a side of the bottom wall 111 facing away from the cavity 113, the through hole 1112 penetrates through the bottom wall 111 of the limiting groove 1111, and the cover plate 115 is limited in the limiting groove 1111 and covers the through hole 1112. Optionally, a side of the cover plate 115 facing away from the cavity 113 is disposed flush with a side of the bottom wall 111 facing away from the cavity 113.

In an embodiment, each magnetic circuit assembly 121 includes at least two first magnets 1211 and at least one first magnetic conductive plate 1212, the at least two first magnets 1211 are stacked on the magnetic conductive yoke 11 along the vibration direction of the diaphragm 21, and the first magnetic conductive plates 1212 are sandwiched between the adjacent two first magnets 1211; the first magnets 1211 magnetize along the vibration direction of the diaphragm 21, and the magnetizing directions of two adjacent first magnets 1211 located at two sides of the first magnetic conductive plate 1212 are opposite.

Optionally, each magnetic circuit assembly 121 is disposed in a receiving space 1141 of the magnetic yoke 11. In the present embodiment, as shown in fig. 3 to 5 and 8, by stacking the first magnet 1211 and the first magnetic conductive plate 1212 of the magnetic circuit assembly 121 in the accommodating space 1141 of the magnetic conductive yoke 11, the first magnet 1211 and the first magnetic conductive plate 1212 are spaced apart from the side wall 112 and the side plate 114 of the magnetic conductive yoke 11 to form the first magnetic gap 13, so that the first magnetic gap 13 is conveniently used to provide an installation space for the first voice coil 23.

Optionally, the first magnet 1211 includes a plurality, and the first magnetic conductive plate 1212 includes at least one, i.e., when the number of first magnets 1211 is N, the number of first magnetic conductive plates 1212 is N-1. In the present embodiment, as shown in fig. 3 to 5 and 8, the first magnet 1211 includes two and the first magnetic conductive plate 1212 includes one. Alternatively, the first magnet 1211, the first magnetic conductive plate 1212, and the first magnet 1211 are stacked on the bottom wall 111 of the magnetic yoke 11 along the vibration direction of the diaphragm 21. Alternatively, the two first magnets 1211 are magnetized along the vibration direction of the diaphragm 21, and the magnetizing directions of the two adjacent first magnets 1211 located at two sides of the first magnetic conductive plate 1212 are opposite.

In the present embodiment, the first magnet 1211 and the first magnetic conductive plate 1212 of the magnetic circuit assembly 121 have their peripheral edges spaced from the side wall 112 and the side plate 114 of the magnetic conductive yoke 11 to enclose the first magnetic gap 13. Optionally, the first magnet 1211 and the first magnetic conductive plate 1212 are provided in a plate shape. It will be appreciated that the first magnetic gap 13 may alternatively be square, rectangular or racetrack shaped, and that the shape of the first voice coil 23 is similar to the shape of the first magnetic gap 13. Optionally, the thickness of the first magnet 1211 is greater than the thickness of the first magnetic conductive plate 1212, so that the magnetic field strength of the magnetic circuit assembly 121 can be effectively ensured.

To facilitate connection of the voice coil 23 to the diaphragm 21 through the frame 22, in this embodiment, the side plate 114 extends along the short axis side 1114 of the magnetic yoke 11 and is spaced from the long axis side 1113 of the side wall 112 of the magnetic yoke 11 to form an avoidance gap 1143, that is, the first magnetic gap 13 communicates with the accommodating space 117 through the avoidance gap 1143.

In one embodiment, each first magnetic circuit portion 12 further includes a cover 123, each cover 123 covering a magnetic circuit assembly 121 and being connected to side wall 112 and side plate 114, the periphery of cover 123 extending toward receiving space 117 to form an extension 1234; the diaphragm 21 has two first sides 216 and two second sides 217 connected end to end, the second sides 217 extending in the direction of arrangement of the two first magnetic circuit portions 12, the two second sides 217 being connected to the side walls 112, respectively, and the two first sides 216 being connected to the extension 1234.

In the present embodiment, as shown in fig. 1, 3 to 5, 7 and 8, the cover 123 is provided to cover the opening of the accommodating space 1141 and is connected with the magnetic yoke 11 and/or the magnetic circuit assembly 121, so that the cover 123 covers a magnetic circuit assembly 121, thereby realizing the installation and fixation of the magnetic circuit assembly 121 of the first magnetic circuit portion 12 and the magnetic yoke 11. It will be appreciated that the first magnetic conductive plate 1212 is sandwiched between two adjacent first magnets 1211.

It is understood that the two first magnets 1211 are respectively connected to the bottom wall 111 and the cover 123 of the magnetic yoke 11. Optionally, the cover 123 is made of a magnetic conductive material. This arrangement effectively homogenizes the magnetism of the first magnet 1211 of the magnetic circuit assembly 121.

In one embodiment, the cover 123 includes a top plate 1231 and a surrounding plate 1232 disposed around the top plate 1231, the surrounding plate 1232 and the top plate 1231 enclose a cavity 1233, at least a portion of the magnetic circuit assembly 121 is accommodated in the cavity 1233 and connected to the top plate 1231, and the surrounding plate 1232 is connected to the magnetic yoke 11.

In this embodiment, as shown in fig. 1, 3 to 5, 7 and 8, by providing the cover 123 with a cavity 1233 formed by enclosing the top plate 1231 and the surrounding plate 1232, the mounting, fixing and limiting mounting of the first magnet 1211 and the first magnetic conductive plate 1212 can be achieved, and the side wall 112 and the side plate 114 of the magnetic conductive yoke 11 and the surrounding plate 1232 of the cover 123 can be spaced from the first magnet 1211 and the first magnetic conductive plate 1212 to form the first magnetic gap 13 in cooperation. Of course, the arrangement can also facilitate the installation and fixation of other components, such as the centering support 25, etc., without limitation.

In one embodiment, the periphery of the cover 123 extends toward one side of the diaphragm 21 to form an extension 1234, and the edges of the diaphragm 21 in the arrangement direction of the two first magnetic circuit portions 12 are connected to the extension 1234.

In this embodiment, as shown in fig. 1, 3 to 5, 7 and 8, the extension 1234 is formed on the periphery of the first magnetic circuit portion 12, that is, the periphery of the cover 123 extends toward one side of the diaphragm 21 to form the extension 1234, so that the diaphragm 21 is connected to the extension 1234, and thus the extension 1234 is used to connect and fix the diaphragm 21, so as to improve the installation stability of the diaphragm 21. It will be appreciated that the diaphragm 21 is sandwiched between the extension 1234 and the magnetically permeable yoke 11.

It will be appreciated that the extension 1234 is formed by the peripheral edge of the cover 123 extending toward the side of the diaphragm 21, i.e., the extension 1234 is formed by the end of the shroud 1232 of the cover 123 remote from the top plate 1231 extending toward the side facing away from the cavity 1233. Optionally, extension 1234 is disposed around the periphery of shroud 1232, without limitation.

It should be noted that, the distance from the diaphragm 21 to the outer surface of the top plate 1231 of the cover 123 of the first magnetic circuit portion 12 is defined as L, and the maximum amplitude of the diaphragm 21 is defined as Xmax, so that L is equal to or greater than Xmax, so that no additional reserved vibration space is needed at the whole machine end, which is beneficial to further lightening and thinning of the whole machine end.

In an embodiment, the diaphragm 21 includes a central portion 211, a ring portion 212 disposed around the central portion 211, and a fixing portion 213 disposed outside the ring portion 212.

Optionally, a fixing 213 is connected to side wall 112 and first magnetic circuit portion 12.

In the present embodiment, as shown in fig. 1, 3 to 5, 7, 8 and 13, the fixing portion 213, the folded ring portion 212 and the central portion 211 of the diaphragm 21 are sequentially connected into an integrally formed structure, thereby ensuring the vibration performance and structural strength of the diaphragm 21. Alternatively, the folded ring portion 212 has a concave structure that is concave toward the side where the magnetic yoke 11 is located. Of course, in other embodiments, the ring 212 may be a convex structure protruding toward the side away from the magnetic yoke 11, which is not limited herein.

It will be appreciated that the diaphragm 21 is square in configuration. Such as rectangular or square, etc., without limitation. In the present embodiment, the fixing portion 213 of the diaphragm 21 has two first sides 216 and two second sides 217, and the two first sides 216 of the fixing portion 213 are respectively connected to the covers 123 of the two first magnetic circuit portions 12, that is, the two first sides 216 are respectively connected to the extensions 1234 of the two covers 123 of the two first magnetic circuit portions 12.

Optionally, the extension portion 1234 and the first side 216 of the fixing portion 213 may be connected and fixed by adhesive. In this embodiment, the extension 1234 is connected to a side of the first side 216 of the fixing portion 213 facing away from the accommodating space 117.

In one embodiment, the central portion 211 is provided with a hollow hole 2111, and the vibration system 2 further includes a dome 215, where the dome 215 is covered at the hollow hole 2111. It can be understood that, as shown in fig. 3 and 13, by providing the hollow hole 2111 at the central portion 211 of the diaphragm 21 and providing the dome 215 to cover the hollow hole 2111, the dome 215 can be utilized to improve the structural strength of the diaphragm 21, and the dome 215 can be utilized to seal the hollow hole 2111, so as to prevent impurities and the like from entering the sounding monomer 100 through the hollow hole 2111, and influence the acoustic performance of the sounding monomer 100.

To further increase the structural strength and rigidity of the dome 215, in one embodiment, the center of the dome 215 is provided with a protrusion 2151 or recess. It will be appreciated that the protrusions 2151 of the dome 215 may be raised structures that increase based on the thickness of the dome 215. Of course, in other embodiments, the protrusion 2151 of the dome 215 may be a protrusion structure formed by protruding one side of the dome 215 toward the other side, such that one side of the dome 215 is concave and the other side is convex, which is not limited herein.

In an embodiment, the periphery of the dome 215 extends toward a side away from the diaphragm 21 to form a rim 2152, and a projection of the rim 2152 on the diaphragm 21 coincides with a portion of the ring 212 along the vibration direction of the diaphragm 21. This further increases the effective radiating area of the diaphragm 21.

It will be appreciated that the periphery of the dome 215 is connected to the side of the central portion 211 facing away from the receiving space 117. Of course, in other embodiments, the periphery of the dome 215 may be connected to the side of the central portion 211 facing the accommodating space 117. In the present embodiment, as shown in fig. 1, 3 to 5, 7 and 8, the edge 2152 of the dome 215 is located on the side of the diaphragm 21 facing away from the accommodating space 117.

In the present embodiment, by disposing the edge portion 2152 of the dome 215 to extend toward the side away from the diaphragm 21 such that the projection of the edge portion 2152 on the diaphragm 21 coincides with the partial rim portion 212 in the vibration direction of the diaphragm 21, the effective radiation area of the diaphragm 21 can be further enhanced.

In an embodiment, the diaphragm 21 further includes a bending portion 214, the bending portion 214 is connected to a side of the fixing portion 213 away from the ring portion 212 and disposed at an angle with respect to the fixing portion 213, and the bending portion 214 is connected to the sidewall 112.

In the present embodiment, as shown in fig. 3 and 13, the bending portion 214 is provided at the periphery of the diaphragm 21, so that the bending portion 214 is connected to the magnetic yoke 11, thereby improving the connection stability of the diaphragm 21. It can be appreciated that the bending portion 214 is connected to a side of the fixing portion 213 away from the ring portion 212 and disposed at an angle with respect to the fixing portion 213, and the bending portion 214 is connected to the side wall 112 of the magnetic yoke 11. Alternatively, the bending portion 214 is disposed perpendicular to the fixing portion 213.

Alternatively, the bending portion 214 is formed by bending a side of the fixing portion 213 away from the bending portion 212 toward the guide yoke 11. This arrangement is advantageous in ensuring structural strength of the fixing portion 213 and the bending portion 214 of the diaphragm 21. In this embodiment, the central portion 211, the ring portion 212, the fixing portion 213, and the bending portion 214 are integrally formed.

In the present embodiment, the bending portion 214 is formed by bending the second side 217 of the fixing portion 213 toward the guide yoke 11. It can be understood that the two second sides 217 of the fixing portion 213 of the diaphragm 21 are respectively connected with the bending portion 214, and no other structure is provided on the two first sides 216 of the fixing portion 213 of the diaphragm 21, so that the connection with the extending portions 1234 of the two cover bodies 123 in the two first magnetic circuit portions 12 can be facilitated, and the vibration performance of the diaphragm 21 is not affected; meanwhile, the smooth flow of the air flow is facilitated.

Alternatively, the bending portion 214 and the side wall 112 of the magnetic conductive yoke 11 may be connected and fixed by gluing. In order to facilitate limiting the diaphragm 21, the diaphragm 21 is prevented from falling due to unstable fixation, in this embodiment, the bending portion 214 is connected to the outer side of the side wall 112 of the magnetic yoke 11, so that the end portion of the side wall 112 of the magnetic yoke 11 is in limiting abutment with the fixing portion 213 of the diaphragm 21, so as to support and fix the diaphragm 21.

In one embodiment, the frame 22 includes a first support portion 221, a first connection portion 222, and a second support portion 223 connected to each other, the first support portion 221 is connected to the inner fixing portion 253, and the second support portion 223 is connected to the first voice coil 23.

In the present embodiment, as shown in fig. 3 to 6, 8 and 9, the bobbin 22 has one end connected to the diaphragm 21 and the other end connected to the first voice coil 23 located in the first magnetic gap 13. It can be appreciated that the first supporting portion 221, the first connecting portion 222 and the second supporting portion 223 of the skeleton 22 are integrally formed, so that the structural strength of the skeleton 22 can be ensured.

It can be understood that the framework 22 is used for installing and fixing the first voice coil 23, ensuring that the first voice coil 23 is suspended in the first magnetic gap 13, and transmitting the vibration of the first voice coil 23 to the diaphragm 21, so as to realize vibration transmission and ensure normal sounding of the diaphragm 21. In this embodiment, the first supporting portion 221 of the skeleton 22 is connected to the central portion 211 of the diaphragm 21, and the second supporting portion 223 of the skeleton 22 is connected to the first voice coil 23, that is, the second supporting portion 223 of the skeleton 22 extends into the first magnetic gap 13 through the avoidance gap 1143 and is connected to the first voice coil 23. Alternatively, the second support portion 223 of the bobbin 22 is coupled to the lower end of the first voice coil 23, so that the mounting stability of the bobbin 22 and the first voice coil 23 can be improved.

In this embodiment, the skeleton 22 is located below the diaphragm 21, and in order to avoid the annular portion 212 of the diaphragm 21, the skeleton 22 is provided with an avoidance region 224 corresponding to the annular portion 212. In this embodiment, the skeleton 22 may be selected as a directional frame structure. The shape profile of the second support portion 223 of the bobbin 22 is similar to the end surface shape profile of the first voice coil 23 so as to fix the first voice coil 23 and promote the support stability of the first voice coil 23.

Optionally, the two skeletons 22 are included, and the two skeletons 22 are symmetrically disposed. It can be appreciated that the two skeletons 22 are located at opposite sides of the diaphragm 21 and are symmetrically arranged with respect to the diaphragm 21. In this embodiment, the two skeletons 22 are disposed corresponding to the two first sides 216 of the diaphragm 21.

In the present embodiment, as shown in fig. 9, one end of the first connecting portion 222 adjacent to the second supporting portion 223 is provided with a supporting table. It can be appreciated that the supporting table is disposed on the framework 22, so that the supporting table is used to provide an installation position for the conductive structures such as the centering support piece 25, so that the sounding unit 100 is conveniently connected and conducted with an external circuit through the first voice coil 23 of the conductive structures such as the centering support piece 25.

It will be appreciated that the first connection portion 222 of the bobbin 22 is provided with two support tables located at both sides of the avoidance space, that is, at both ends of the first voice coil 23. Alternatively, the first voice coil 23 extends along the short axis side 1114 of the yoke 11, and the two support stands are spaced apart along the short axis side 1114 of the yoke 11.

Alternatively, the bobbins 22 include four, one end of each bobbin 22 is connected to the diaphragm 21, and the other end of the bobbin 22 is connected to the first voice coil 23. In the present embodiment, two bobbins 22 of the four bobbins 22 are spaced apart along the short axis side 1114 of the magnetic yoke 11 and located at both ends of the first voice coil 23, that is, two bobbins 22 of the four bobbins 22 are located at both ends of the side plate 114. It will be appreciated that the second support portion 223 of each armature 22 extends into the first magnetic gap 13 through the relief notch 1143 and is coupled to the first voice coil 23.

In one embodiment, the vibration system 2 further includes a centering pad 25, and the centering pad 25 includes an outer fixing portion 251, an inner fixing portion 253, and a spring arm portion 252 connecting the outer fixing portion 251 and the inner fixing portion 253, the outer fixing portion 251 is connected to the side wall 112, and the inner fixing portion 253 is connected to the bobbin 22 and connected to the first voice coil 23 through the bobbin 22.

It can be understood that, as shown in fig. 3, 6, 9, 14 and 16, by providing the centering support 25, external current can be introduced into the first voice coil 23 by using the centering support 25, and meanwhile, the centering support 25 is used for centering the vibration of the first voice coil 23, so that the first voice coil 23 is prevented from swinging or polarizing during the vibration process, and the sound producing effect and the acoustic performance of the sound producing unit 100 are improved.

In this embodiment, as shown in fig. 9 and 14, the outer fixing portion 251 of the centering support 25 may be selected to have a ring-shaped or frame structure, and the centering support 25 includes a plurality of spring arm portions 252 and a plurality of inner fixing portions 253, and one end of each spring arm portion 252 is connected to the outer fixing portion 251, and the other end is connected to one inner fixing portion 253. Alternatively, the inner fixing portions 253 and the spring arm portions 252 of the centering support 25 and the outer fixing portions 251 are integrally formed, that is, the centering support 25 is an integral structure, the outer fixing portions 251 of the centering support 25 are supported at the end portions of the side walls 112 of the magnetic yoke 11 and fixedly clamped by the diaphragm 21 and the cover 123 of the first magnetic circuit portion 12, and one ends of the spring arm portions 252 of the centering support 25, which are far from the outer fixing portions 251, extend into the first magnetic gap 13 and are electrically connected with the first voice coil 23 and the leads of the first voice coil 23 by the inner fixing portions 253. Alternatively, the inner fixing portion 253 is provided with a pad electrically connected to the lead wire of the first voice coil 23.

Of course, in other embodiments, the centering tabs 25 are one, two, or four. Of course, when the centering support 25 is one, the structure of the centering support 25 is as described above, and the outer fixing portion 251 of the centering support 25 may be a ring or frame structure. When the number of the centering support pieces 25 is two, the two centering support pieces 25 are symmetrically arranged. Alternatively, the two centering tabs 25 may be symmetrically disposed on the two long axis sides 1113 of the magnetic yoke 11; alternatively, the two centering tabs 25 may be symmetrically disposed on the two short axis sides 1114 of the magnetic yoke 11, which is not limited herein. At this time, each positioning stay 25 includes one outer fixing portion 251, two spring arm portions 252, and two inner fixing portions 253. When the number of the centering pieces 25 is four, the four centering pieces 25 are provided at the four corner positions of the yoke 11, respectively, and are not limited herein. At this time, each of the positioning tabs 25 includes an outer fixing portion 251, a spring arm portion 252, and an inner fixing portion 253, which are not limited herein.

Alternatively, the centering tabs 25 may be selected as one. In one embodiment, the outer fixing portion 251 has two first edges and two second edges connected end to end, and a corner 256 is formed at the connection between each first edge and one second edge; the spring arm portions 252 include four, one end of each spring arm portion 252 is connected to the corner portion 256, the other end of each spring arm portion 252 is connected to the inner fixing portion 253, and the inner fixing portion 253 is connected to the bobbin 22 and electrically connected to the leads of the first voice coil 23.

It will be appreciated that two spring arm portions 252 of the four spring arm portions 252 of the centering support 25 are located at both ends of each of the first voice coils 23 in the third direction. In the present embodiment, the first edge of the outer fixing part 251 extends in the third direction, and the second edge extends in the second direction.

In the present embodiment, as shown in fig. 6, 9, 14 and 15, each first side of the centering support 25 is sandwiched between the first magnetic circuit portion 12 and the magnetic yoke 11, and at least part of each second side is sandwiched between the fixing portion 213 and the magnetic yoke 11.

In this embodiment, as shown in fig. 9 and 14, the outer fixing portion 251 of the centering support 25 may be selected to have a ring-shaped or frame-shaped structure, and the outer fixing portion 251, the plurality of elastic arm portions 252 and the plurality of inner fixing portions 253 may be selected to have an integrally formed structure, so that the structural strength of the centering support 25 can be ensured. Alternatively, the outer fixing portion 251 of the centering support 25 is flush with the plurality of spring arm portions 252 and the plurality of inner fixing portions 253, and the plurality of spring arm portions 252 and the plurality of inner fixing portions 253 are located inside the outer fixing portion 251, so that the centering support 25 can be fixed with the cover 123 of the diaphragm 21 and the first magnetic circuit portion 12 by the yoke 11, elasticity of the spring arm portions 252 of the centering support 25 can be ensured, and the spring arm portions 252 are connected to the bobbin 22 and electrically connected to the leads of the first voice coil 23.

It will be appreciated that, as shown in fig. 9 and 14, the outer fixing portion 251 has a square ring shape, the outer fixing portion 251 has four corners 256, and the spring arm portion 252 includes four spring arm portions 252, each spring arm portion 252 being disposed corresponding to a corner 256. Alternatively, the four spring arms 252 of the four corners 256 of the centering support 25 are all located outside the diaphragm 21. In this embodiment, the four corners 256 of the outer fixing portion 251 of the centering support 25 are further provided with outer pads for connecting to an external circuit. In this embodiment, the yoke 11 is formed with a space for avoiding the four corners 256 of the yoke 25, that is, the four corners 256 of the yoke 25 are exposed outside the side wall 112 of the yoke 11.

It will be appreciated that, in order to further fix the inner fixing portion 253 of the centering plate 25 to ensure the firmness of the connection of the inner fixing portion 253 with the leads of the first voice coil 23, the bobbin 22 is provided with a support stand adjacent to the first voice coil 23, and the inner fixing portion 253 is connected with the support stand and with the leads of the first voice coil 23. In order to ensure deformability of the centering pin 25, the spring arm 252 has at least one bend.

In one embodiment, as shown in fig. 9 and 14, the outer fixing portion 251 has a square ring shape, and each of the first voice coils 23 extends along the short axis direction of the outer fixing portion 251 and is located between two spring arm portions 252, and both ends of each of the first voice coils 23 have an input lead and an output lead, which are connected to one spring arm portion 252, respectively. It will be appreciated that the two first voice coils 23 are connected in series by the centering disc 25.

In another embodiment, the outer fixing portion 251 of the centering support 25 has a square annular structure, the inner fixing portion 253 has a square annular structure, and at this time, the outer fixing portion 251 of the centering support 25 is disposed between the diaphragm 21 and the magnetic yoke 11, the spring arm portion 252 corresponds to the ring portion 212 of the diaphragm 21, and the inner fixing portion 253 is connected to the central portion 211 of the diaphragm 21.

In the present embodiment, as shown in fig. 3, 6 and 15, by providing the centering support 25 as two nested outer fixing portions 251 and inner fixing portions 253 and connecting the outer fixing portions 251 and the inner fixing portions 253 by the spring arm portions 252, the outer fixing portions 251 can be fixed by mounting the yoke 11 with the diaphragm 21 and the cover 123 of the first magnetic circuit portion 12, so that the centering support 25 is fixed, and the inner fixing portions 253 are connected with the central portion 211 of the diaphragm 21, thereby ensuring the connection stability of the diaphragm 21 with the centering support 25.

It is understood that the spring arm 252 corresponds to the folded ring portion 212 of the diaphragm 21. In order to avoid interference between the ring-folded portion 212 of the diaphragm 21 and the spring arm portion 252 of the centering support 25 during vibration, the ring-folded portion 212 of the diaphragm 21 is configured as an upwardly convex hull structure, that is, the spring arm portion 252 is located in the vibration space and corresponds to a concave side of the ring-folded portion 212 of the diaphragm 21.

Further, in the projection along the first direction, the spring arm portions 252 of the centering support 25 correspond to edge positions on both sides of the third direction of the diaphragm 21. In this way, spring arm 252 is spaced apart from and does not interfere with first magnetic circuit portion 12, and the volume of first magnetic circuit portion 12 can be further increased and the size of first voice coil 23 can be further increased to further increase product driving force factor BL.

In this embodiment, as shown in fig. 6 and 9, each first voice coil 23 is disposed in a first magnetic gap 13 and is connected to the inner fixing portion 253 through the frame 22, so that the vibration of the first voice coil 23 can be transmitted to the inner fixing portion 253 of the centering support 25 and the diaphragm 21 through the frame 22, thereby centering the vibration of the first voice coil 23 by the centering support 25, avoiding the first voice coil 23 from swinging or polarizing during the vibration process, and improving the sound producing effect and the acoustic performance of the sound producing unit 100.

Alternatively, the top surface of diaphragm 21 is lower than the side surface of first magnetic path portion 12 facing away from magnetic yoke 11. In the present embodiment, the ring-folded portion 212 of the diaphragm 21 protrudes upward, and at this time, the top surface of the ring-folded portion 212 of the diaphragm 21 is lower than the surface of the first magnetic circuit portion 12 on the side facing away from the magnetic yoke 11.

In the present embodiment, as shown in fig. 3, 6 and 15, the spring arm portions 252 of the centering support 25 include two spring arm portions 252 provided on both sides of the inner fixing portion 253. Alternatively, the outer fixing part 251 has a rectangular ring shape. The spring arm 252 is connected to the long axis side of the outer fixing portion 251; alternatively, the spring arm 252 is connected to the short axis side of the outer fixing portion 251, which is not limited herein. The two spring arm portions 252 of the centering support 25 are located on different sides of the outer fixing portion 251 from the frame 22.

As can be appreciated, as shown in fig. 3, 6 and 15, the outer fixing portion 251 has two first sides and two second sides connected end to end, each first side is sandwiched between the first magnetic circuit portion 12 and the magnetic conductive yoke 11, and at least part of each second side is sandwiched between the fixing portion 213 and the magnetic conductive yoke 11; wherein, the spring arm portions 252 include two spring arm portions 252, one end of each spring arm portion 252 is connected to the second side, and the other end of each spring arm portion 252 is connected to one side of the inner fixing portion 253 corresponding to the second side.

In an embodiment, the inner fixing portion 253 of the centering support 25 is square and annular, the inner fixing portion 253 has four corners 256, each corner 256 is provided with a bonding pad, the frame 22 includes four, each first voice coil 23 is located between two frames 22, one end of each frame 22 is connected to the bonding pad, the other end of the frame 22 is connected to the first voice coil 23 and electrically connected to the leads of the first voice coil 23, so that the two first voice coils 23 are connected in series through the centering support 25 and the frame 22.

In one embodiment, the magnetic yoke 11 further includes a plurality of vertical plates 116, the plurality of vertical plates 116 are disposed in the accommodating space 117 at intervals, the central magnetic circuit 14 is disposed between the plurality of vertical plates 116 and is spaced from the vertical plates 116 to form the central magnetic gap 16, and one end of the central voice coil 24 is suspended from the central magnetic gap 16.

In the present embodiment, as shown in fig. 10 and 11, a plurality of risers 116 are provided in the accommodating space 117 at intervals, and the center magnetic circuit 14 is located between the plurality of risers 116 and spaced from the risers 116 to enclose the center magnetic gap 16. It will be appreciated that the riser 116 of the magnetic yoke 11 may be an annular structure located within the receiving space 117; alternatively, the plurality of vertical plates 116 of the magnetic yoke 11 may be provided, and the plurality of vertical plates 116 may be formed in an annular structure by being spaced apart from each other in the accommodating space 117.

In the present embodiment, the yoke 11 includes two or four risers 116. When there are two vertical plates 116, the two vertical plates 116 are arranged at intervals along the long axis side 1113 of the magnetic yoke 11; alternatively, two risers 116 are spaced along the short axis side 1114 of the magnetic yoke 11. When the number of the vertical plates 116 is four, two vertical plates 116 of the four vertical plates 116 are arranged at intervals along the long axis side 1113 of the magnetic yoke 11, and the other two vertical plates 116 are arranged at intervals along the short axis side 1114 of the magnetic yoke 11, so that the four vertical plates 116 enclose to form an annular structure, and at this time, the central magnetic circuit 14 is arranged in the annular structure formed by enclosing the four vertical plates 116 and is spaced from the four vertical plates 116 to form the central magnetic gap 16.

In an embodiment, the sounding unit 100 includes a magnetic circuit 1 and a vibration system 2, where the magnetic circuit 1 includes a magnetic yoke 11, a central magnetic circuit 14 disposed on the magnetic yoke 11, and two first magnetic circuit portions 12, an accommodating space 117 is formed between the two first magnetic circuit portions 12, the central magnetic circuit 14 is disposed in the accommodating space 117 and cooperates with the magnetic yoke 11 to form a central magnetic gap 16, each first magnetic circuit portion 12 cooperates with the magnetic yoke 11 to form a first magnetic gap 13, the vibration system 2 includes a diaphragm 21, a frame 22, a central voice coil 24, and two first voice coils 23, the diaphragm 21 is disposed in the accommodating space 117 and connected with the two first magnetic circuit portions 12, one end of the central voice coil 24 is connected with the diaphragm 21, the other end of the central voice coil 24 is suspended in the central magnetic gap 16, and each first voice coil 23 is disposed in the first magnetic gap 13 and connected with the diaphragm 21 through the frame 22.

In this embodiment, as shown in fig. 3 and 11, the central magnetic circuit 14 and the two first magnetic circuit portions 12 of the magnetic circuit system 1 share one magnetic yoke 11, so as to effectively increase the installation stability and the structural uniformity, and ensure the uniformity of vibration of the central voice coil 24 and the two first voice coils 23, so as to improve the sound producing effect of the sound producing unit 100.

It can be appreciated that the magnetic yoke 11 includes a bottom wall 111 and a side wall 112 disposed at an angle, and the side wall 112 and the bottom wall 111 enclose a cavity 113. The magnetic guiding yoke 11 further includes two side plates 114 and a plurality of vertical plates 116, the two side plates 114 are arranged in the accommodating cavity 113 at intervals, the bottom wall 111 is arranged at intervals, the accommodating space 117 is arranged between the two side plates 114, one side of each side plate 114 facing away from the accommodating space 117 encloses with the side wall 112 to form an accommodating space 1141, each first magnetic circuit portion 12 is arranged in one accommodating space 1141 and is spaced from the side wall 112 and the side plates 114 to form a first magnetic gap 13, the plurality of vertical plates 116 are arranged in the accommodating space 117 at intervals, and the central magnetic circuit 14 is arranged between the plurality of vertical plates 116 and is spaced from the vertical plates 116 to form a central magnetic gap 16.

In this embodiment, the bottom wall 111, the side wall 112, the side plate 114 and the vertical plate 116 of the magnetic yoke 11 may be formed integrally, so that the structural strength of the magnetic yoke 11 can be effectively improved. Alternatively, the magnetically permeable yoke 11 is rectangular in configuration. A plurality of vertical plates 116 of the magnetic yoke 11 are located between the two side plates 114.

Alternatively, the riser 116 is integrally formed with the bottom wall 111. And the vertical plate 116 is disposed perpendicularly to the bottom wall 111. In this embodiment, the magnetic yoke 11 is provided with a through hole 1112 corresponding to each vertical plate 116, and the vertical plates 116 are optionally bent from a side of the bottom wall 111 adjacent to the through hole 1112 toward the cavity 113.

Of course, in other embodiments, the central magnetic circuit 14 and the two first magnetic circuit portions 12 of the magnetic circuit system 1 may not share one magnetic yoke 11, where the magnetic yoke 11 includes a plurality of split lower yokes, and the central magnetic circuit 14 and the two first magnetic circuit portions 12 are respectively disposed corresponding to one lower yoke, which is not limited herein.

In the present embodiment, as shown in fig. 3 to 6 and 11, the peripheral edges of the center magnet 141 and the center magnetically permeable plate 142 are spaced apart from the riser 116 to cooperatively form the center magnetic gap 16. The shape of the first magnetic gap 13 may be a square ring shape, a rectangular ring shape, or a racetrack shape. Of course, the shape of the central magnetic gap 16 may be a square ring, a rectangular ring, or a racetrack shape, which is not limited herein.

In one embodiment, an acoustic path 218 is formed between the top surface of the edge of the diaphragm 21 extending in the arrangement direction of the two first magnetic circuit portions 12 and the two first magnetic circuit portions 12.

In this embodiment, as shown in fig. 1 and 7, the fixing portion 213 of the second side 217 of the diaphragm 21 is located on the same plane as the central portion 215 of the diaphragm 21, and at this time, the fixing portion 213 of the second side 217 of the diaphragm 21 is lower than the top surface of the first magnetic circuit portion 12, so that an acoustic path 218 is formed between the fixing portion 213 of the second side 217 of the diaphragm 21 and the two first magnetic circuit portions 12.

As shown in fig. 16 to 20, the present utility model further provides a sound generating module 400, where the sound generating module 400 includes a module housing 300 and the sound generating unit 100, and the sound generating unit 100 is disposed on the module housing 300. The specific structure of the sounding unit 100 refers to the foregoing embodiments, and since the sounding module 400 adopts all the technical solutions of all the foregoing embodiments, at least has all the beneficial effects brought by the technical solutions of the foregoing embodiments, and will not be described in detail herein.

In this embodiment, the module housing 300 is provided with a mounting cavity 310 and a sound outlet 311 communicating with the mounting cavity 310, the sound generating unit 100 is disposed in the mounting cavity 310, a front sound cavity 320 is formed between the top surface of the diaphragm 21 and the two first magnetic circuit portions 12, and the front sound cavity 320 communicates with the sound outlet 311.

In an embodiment, the diaphragm 21 of the sounding unit 100 is disposed corresponding to the sounding hole 311, and the sounding module 400 is in a positive sounding structure.

In another embodiment, the sound outlet 311 is located on the side 350 of the module housing 300, and the sound outlet 218 is formed between the top surface of the edge of the diaphragm 21 extending along the arrangement direction of the two first magnetic circuit portions 12 and the two first magnetic circuit portions 12, and the sound outlet 311 and the front sound chamber 320 are communicated through the sound outlet 218. Further, the module housing 300 is further provided with a sound outlet channel which is communicated with the mounting cavity 310, and the front sound cavity 320 is communicated with the sound outlet hole 311 through the sound outlet channel 218 and the sound outlet channel, so that the sound producing module 400 is in a side sound outlet structure.

In an embodiment, as shown in fig. 16 and 17, the sounding module 400 includes a module housing 300 and a sounding unit 100, the module housing 300 is provided with a mounting cavity 310 and a sounding hole 311 communicated with the mounting cavity 310, the sounding unit 100 is disposed in the mounting cavity 310, the module housing 300 encloses a front sound cavity 320 communicated with the sounding hole 311, the sounding unit 100 includes a magnetic circuit system 1 and a vibration system 2, the magnetic circuit system 1 includes a magnetic yoke 11 and two first magnetic circuit portions 12 disposed in the magnetic yoke 11, a receiving space 117 is formed between the two first magnetic circuit portions 12, each first magnetic circuit portion 12 cooperates with the magnetic yoke 11 to form a first magnetic gap 13, the vibration system 2 includes a diaphragm 21, a frame 22 and two first voice coils 23, the diaphragm 21 is disposed in the receiving space 117 and connected with the two first magnetic circuit portions 12, each first magnetic circuit 23 is disposed in the first magnetic gap 13 and connected with the diaphragm 21 through the frame 22, a front sound cavity 320 is formed between the top surface of the diaphragm 21 and the two first magnetic circuit portions 12, and the front sound cavity 320 is communicated with the sounding hole 311.

In another embodiment, as shown in fig. 18 to 20, the sounding module 400 includes a module housing 300 and a sounding unit 100, the module housing 300 is provided with a mounting cavity 310 and a sounding hole 311 communicating with the mounting cavity 310, the sounding unit 100 is disposed in the mounting cavity 310, the module housing 300 encloses a front sounding cavity 320 and a rear sounding cavity 330 disposed at intervals, the front sounding cavity 320 is communicated with the sounding hole 311, the sounding unit 100 includes a magnetic circuit 1 and a vibration system 2, the magnetic circuit 1 includes a magnetic yoke 11, a central magnetic circuit 14 and two first magnetic circuit portions 12 disposed in the magnetic yoke 11, a receiving space 117 is formed between the two first magnetic circuit portions 12, the central magnetic circuit 14 is disposed in the receiving space 117 and cooperates with the magnetic yoke 11 to form a central magnetic gap 16, each first magnetic circuit portion 12 cooperates with the magnetic yoke 11 to form a first magnetic gap 13, the vibration system 2 includes a diaphragm 21, a frame 22, a central voice coil 24 and two first voice coils 23, the front sounding cavity 320 are disposed in the receiving space 117 and are connected with the two first magnetic circuit portions 12, one end of the central voice coil 24 is connected with 21, the other end of the magnetic circuit 1 includes a magnetic yoke 11, a receiving space 117 is formed between the two first voice coils 16 and the first voice coil 320 and the first magnetic coil 320 is connected with the first magnetic coil 320, and the first magnetic coil 320 is disposed in the first magnetic gap 21, and the first magnetic coil 320 is connected with the first magnetic coil 320, and the first magnetic coil 320 is formed between the first magnetic coil 320 and the first magnetic coil 320 is connected with the first magnetic coil 21, and the first magnetic coil 320.

It will be appreciated that, as shown in fig. 17, 19 and 20, the sounding body 100 is disposed in the mounting cavity 310, and the two first magnetic circuit portions 12 of the sounding body 100 and the cavity wall of the mounting cavity 310 enclose a front sound cavity 320 facing the diaphragm 21, and the front sound cavity 320 communicates with the sound outlet channel.

In an embodiment, the module housing 300 is further provided with a fixing hole 360 corresponding to at least one first magnetic circuit portion 12, and at least part of the first magnetic circuit portion 12 is located in the fixing hole 360 to seal the fixing hole 360, so that the two first magnetic circuit portions 12 and the diaphragm 21 enclose the front acoustic cavity 320 with the module housing 300.

It will be appreciated that, as shown in fig. 16, 14 and 19, by providing the fixing hole 360 in the module case 300 such that at least part of the first magnetic circuit portion 12 is located in the fixing hole 360 to seal the fixing hole 360, the thickness or height of the sound emitting module 400 can be effectively reduced. In the present embodiment, the module housing 300 is provided with a fixing hole 360 corresponding to each first magnetic circuit portion 12, and each first magnetic circuit portion 12 is located in the fixing hole 360 to seal the fixing hole 360.

In the present embodiment, the top plate 1231 of the cover 123 of the first magnetic circuit portion 12 is exposed to the fixing hole 360, and the inner wall of the fixing hole 360 is hermetically connected with the outer wall of the enclosure plate 1232 of the cover 123. Optionally, the cover 123 of the first magnetic circuit portion 12 is fixed to the module case 300 by an adhesive.

Alternatively, the side of the first magnetic circuit portion 12 facing away from the magnetic yoke 11 is disposed flush with the outer surface of the module case 300. In the present embodiment, the top plate 1231 of the cover 123 of the first magnetic circuit portion 12 is disposed flush with the outer surface of the module housing 300 on the side facing away from the magnetic yoke 11, so that the thickness or height of the sound module 400 can be effectively ensured to be uniform.

In one embodiment, the module housing 300 is provided with a mounting hole 370 corresponding to the magnetic conductive yoke 11, and at least a portion of the magnetic conductive yoke 11 is located in the mounting hole 370 to seal the mounting hole 370.

It will be appreciated that, as shown in fig. 17 to 20, by providing the mounting hole 370 in the module case 300 such that at least part of the magnetic yoke 11 is positioned in the mounting hole 370 to seal the mounting hole 370, the thickness or height of the sound emitting module 400 can be effectively reduced. Alternatively, the side of the magnetic yoke 11 facing away from the diaphragm 21 is flush with the outer surface of the module housing 300. Such an arrangement can effectively ensure the consistency of the thickness or height of the sounding module 400.

It should be noted that, by arranging the fixing hole 360 and the mounting hole 370 on two opposite sides of the module housing 300, the top plate 1231 of the cover 123 of the first magnetic circuit portion 12 of the sounding unit 100 is exposed to the fixing hole 360 and is flush with the outer surface of the module housing 300, and the magnetic yoke 11 is exposed to the mounting hole 370 and is flush with the outer surface of the module housing 300, so that the height dimension of the sounding module 400 is equivalent to or consistent with the height dimension of the sounding unit 100, and thus the thin design of the sounding module 400 can be effectively realized.

In the present embodiment, the magnetic conductive yoke 11 of the sound generating unit 100 is provided with a leakage hole 1142. It can be appreciated that when the sounding body 100 is disposed in the mounting cavity 310, the leakage hole 1142 of the sounding body 100 communicates with the mounting cavity 310 and the receiving cavity 113. It can be appreciated that a rear sound cavity 330 isolated from the front sound 320 is also formed between the sound emitting unit 100 and the module housing, and the leakage hole 1142 of the sound emitting unit 100 communicates the vibration space of the sound emitting unit 100 with the rear sound cavity 330.

In order to further improve the sound emitting effect of the sound emitting module 400, the rear sound cavity 330 of the sound emitting module 400 is filled with sound absorbing particles. In order to avoid sound absorbing particles entering the sound emitting unit 100 through the leakage holes 1142, the sound emitting unit 100 is further affected. It will be appreciated that the sounding module 400 may further include an insulating mesh and a metal mesh disposed in the rear sound chamber 330, such that the insulating mesh and the metal mesh cover the leakage holes 1142 of the sounding cell 100.

In this embodiment, as shown in fig. 18, the module housing 300 is further provided with a damping hole communicated with the rear acoustic cavity 330, and a damping member for blocking the damping hole is disposed at the damping hole, so that the sound absorbing particles can be conveniently filled into the rear acoustic cavity 330 from the damping hole, which is not limited herein.

The utility model also provides electronic equipment, which comprises the sounding monomer 100. The specific structure of the sounding unit 100 refers to the foregoing embodiments, and because the electronic device adopts all the technical solutions of all the foregoing embodiments, the electronic device at least has all the beneficial effects brought by the technical solutions of the foregoing embodiments, which are not described in detail herein.

In this embodiment, the electronic device further includes a device housing and a flexible circuit board, and the sounding unit 100 and the flexible circuit board are both disposed in the device housing. It is understood that the electronic device may be an earphone, a mobile phone, a computer, a tablet computer, a smart wearable device, etc., and is not limited herein.

The utility model also provides electronic equipment, which comprises the sounding module 400. The specific structure of the sounding module 400 refers to the foregoing embodiments, and because the electronic device adopts all the technical solutions of all the foregoing embodiments, the sounding module at least has all the beneficial effects brought by the technical solutions of the foregoing embodiments, which are not described in detail herein.

It is understood that the electronic device may be an earphone, a mobile phone, a computer, a tablet computer, a smart wearable device, etc., and is not limited herein. In this embodiment, the electronic device further includes a device housing, and the sound generating module 400 is disposed in the device housing.

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 equivalent structural modifications made by the present description and accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. A sound producing monomer, characterized in that the sound producing monomer comprises:

2. The sound-producing unit according to claim 1, wherein the center magnet has a first surface and a second surface facing away from each other, the first surface being connected to the center magnetic conductive plate, the second surface being connected to the magnetic conductive yoke, the center magnetic conductive plate being provided with the opening, the first surface being provided with the projection, the magnetic conductive yoke being provided with the opening, and the second surface being provided with the projection.

3. The sound generating unit according to claim 1, wherein the magnetic circuit system further comprises two first magnetic circuit parts, the two first magnetic circuit parts are arranged at intervals, an accommodating space is formed between the two first magnetic circuit parts, the central magnetic circuit is arranged in the accommodating space, and each first magnetic circuit part comprises a magnetic circuit assembly;

4. The sounding monomer of claim 3, wherein the two magnetic circuit assemblies are arranged on the magnetic yoke, the magnetic yoke comprises a bottom wall and a side wall which are arranged at an included angle, and the side wall and the bottom wall enclose a containing cavity;

The magnetic yoke further comprises two side plates and a plurality of vertical plates, wherein the two side plates and the plurality of vertical plates are positioned in the accommodating cavity, the two side plates are arranged in the bottom wall at intervals, the accommodating space is positioned among the plurality of side plates, one side, facing away from the accommodating space, of each side plate is enclosed with the side wall to form an accommodating space, each magnetic circuit assembly is arranged in one accommodating space and forms a first magnetic gap with the side wall and the side plates at intervals, the plurality of vertical plates are arranged in the accommodating space at intervals, and the central magnetic circuit is positioned among the plurality of vertical plates and forms a central magnetic gap with the vertical plates at intervals;

5. The sound-producing unit according to claim 4, wherein the bottom wall is provided with a through hole adjacent to each side plate and each vertical plate, each side plate is formed by bending one side of the bottom wall adjacent to the through hole towards the inside of the containing cavity, and each vertical plate is formed by bending one side of the bottom wall adjacent to the through hole towards the inside of the containing cavity.

6. The sound-producing cell of claim 5, further comprising a cover plate covering the through-hole.

7. The sound-producing cell of claim 4, wherein the bottom wall, the riser, the side panels, and the side walls are integrally formed;

And/or the side wall is arranged around the periphery of the bottom wall;

8. The sound generating unit according to claim 3, wherein each of said magnetic circuit assemblies comprises:

9. The sound emitting unit of claim 4, wherein the vibration system further comprises a centering support comprising an outer fixing portion, an inner fixing portion, and a spring arm portion connecting the outer fixing portion and the inner fixing portion, the outer fixing portion being connected to the side wall, the inner fixing portion being connected to the bobbin and connected to the first voice coil through the bobbin.

10. A sound emitting module, characterized in that the sound emitting module comprises:

a module housing; and

The sound emitting unit according to any one of claims 1 to 9, which is provided to the module case.