CN220965141U

CN220965141U - Sound generating device and electronic equipment

Info

Publication number: CN220965141U
Application number: CN202322512823.XU
Authority: CN
Inventors: 蒋羽; 郝正恩; 郭翔
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2023-09-15
Filing date: 2023-09-15
Publication date: 2024-05-14
Anticipated expiration: 2033-09-15

Abstract

The utility model belongs to the technical field of electroacoustic conversion, and particularly relates to a sound generating device and electronic equipment. The sound generating device comprises a shell, at least one first sound generating unit and at least one second sound generating unit, wherein at least one first mounting opening and at least one second mounting opening are formed in the shell, at least part of the first sound generating unit is arranged in the first mounting opening and connected with the shell, the first sound generating unit comprises a first vibration component and a first magnetic circuit component, the first vibration component comprises a first vibrating diaphragm and a first voice coil, one end of the first voice coil in the vibration direction is connected with the first vibrating diaphragm, the axial direction of the first voice coil is perpendicular to the vibration direction, and at least part of the second sound generating unit is arranged in the second mounting opening and connected with the shell; the first sound generating unit is a high-frequency sound generating unit, and the second sound generating unit is a low-frequency sound generating unit. The sounding device has the advantages of low space occupation rate and good sounding effect.

Description

Sound generating device and electronic equipment

Technical Field

The utility model belongs to the technical field of electroacoustic conversion, and particularly relates to a sound generating device and electronic equipment.

Background

The sound emitting device is an important acoustic component in an electronic device, which is a transducer device that converts an electrical signal into an acoustic signal. Under the trend of miniaturization of intelligent devices, users put higher demands on the cruising ability of the intelligent devices, so that batteries of the intelligent devices such as tablet computers and mobile phones are larger and larger. Meanwhile, the intelligent equipment has more and more components such as chips, cameras and the like, and the structural space in the equipment has more and more compact. In order to achieve a perfect sound effect, the scheme of simultaneously installing the low-frequency loudspeaker and the high-frequency loudspeaker occupies a large amount of internal space of the intelligent equipment, cannot adapt to the structural design of the intelligent equipment, and strongly hinders the miniaturization trend of the intelligent equipment.

Disclosure of utility model

The utility model aims to at least solve the problem that a large amount of internal space of intelligent equipment is occupied when a low-frequency loudspeaker and a high-frequency loudspeaker are installed simultaneously. This object is achieved by:

A first aspect of the present utility model proposes a sound emitting device comprising:

A housing having at least one first mounting port and at least one second mounting port formed thereon;

The first sound generating unit comprises a first vibrating assembly and a first magnetic circuit assembly, the first vibrating assembly comprises a first vibrating diaphragm and a first voice coil, the first magnetic circuit assembly is provided with a first magnetic gap, one end of the first voice coil in the vibrating direction is connected with the first vibrating diaphragm, the other end of the first voice coil in the vibrating direction is inserted into the first magnetic gap, and the axial direction of the first voice coil is perpendicular to the vibrating direction;

At least one second sound generating unit, at least part of the structure of the second sound generating unit is arranged in the second mounting port and is connected with the shell;

the first sound generating unit is a high-frequency sound generating unit, and the second sound generating unit is a low-frequency sound generating unit.

According to the sound generating device, the high-frequency sound generating unit and the low-frequency sound generating unit are arranged on the shell together, so that the sound generating device has both high-frequency sound generating performance and low-frequency sound generating performance, the effects of widening the frequency bandwidth and improving the audio loudness can be achieved, and the sound generating effect of the sound generating device can be improved; simultaneously, set up the axial with the vibration direction looks perpendicular of first voice coil loudspeaker voice coil, compare in the axial of first voice coil loudspeaker voice coil and the vibration direction is unanimous, can reduce the space that first voice coil loudspeaker voice coil occupy in the plane along being on a parallel with first vibrating diaphragm to reduce the space that first sound generating unit occupy in the plane along being on a parallel with first vibrating diaphragm, and then reduce sound generating mechanism's space occupancy.

In addition, the sound generating device according to the present utility model may further have the following additional technical features:

In some embodiments of the present utility model, the second sound generating unit includes a second vibration assembly and a second magnetic circuit assembly, the second vibration assembly includes a second diaphragm and a second voice coil, the second magnetic circuit assembly is formed with a second magnetic gap, one end of the second voice coil along the vibration direction is connected with the second diaphragm, the other end of the second voice coil along the vibration direction is inserted into the second magnetic gap, and the axial direction of the second voice coil is consistent with the vibration direction.

In some embodiments of the utility model, the sound radiating area of the first diaphragm is smaller than the sound radiating area of the second diaphragm;

And/or the equivalent mass of the first vibration component is smaller than the equivalent mass of the second vibration component.

In some embodiments of the present utility model, the first diaphragm and the second diaphragm are of unitary construction;

or the first vibrating diaphragm and the second vibrating diaphragm are of split type structures;

Or the first vibrating diaphragm, the second vibrating diaphragm and the shell are integrated injection molding pieces.

In some embodiments of the utility model, the equivalent mass of the first vibration assembly is less than the equivalent mass of the second vibration assembly.

In some embodiments of the present utility model, the housing includes a first housing portion and a second housing portion disposed side by side, the first housing portion being provided with the first mounting port, the second housing portion being provided with the second mounting port, an outer periphery of the first diaphragm being fixed to the first housing portion, and an outer periphery of the second diaphragm being fixed to the second housing portion;

Or, the casing forms into an integral structure, the casing includes the first supporting part that is located intermediate position and locates the second supporting part of first supporting part both sides, first supporting part respectively with both sides the cooperation of second supporting part defines first installation mouth with the second installation mouth, first vibrating diaphragm with the second vibrating diaphragm is located the both sides of first supporting part and respectively with first supporting part with the second supporting part is connected.

In some embodiments of the present utility model, the first voice coil includes a pair of long axis sides extending in an axial direction thereof and spaced apart in a vibration direction thereof,

The long axis side close to the first vibrating diaphragm is connected with the first vibrating diaphragm and is positioned outside the first magnetic gap;

or, the long axis side close to the first vibrating diaphragm is connected with the first vibrating diaphragm through a framework, and a pair of long axis sides are located in the first magnetic gap.

In some embodiments of the present utility model, the first sound generating unit and the second sound generating unit are respectively in a substantially rectangular structure, and a short axis direction of the first sound generating unit is consistent with or perpendicular to a long axis direction of the second sound generating unit.

In some embodiments of the present utility model, the first magnetic circuit assembly includes two magnet groups disposed at intervals, the first magnetic gap is formed between the two magnet groups, and any one of the magnet groups includes a magnet and a magnetically permeable plate disposed in a stacked manner.

In some embodiments of the present utility model, the magnetic yoke is connected to the housing and forms a housing structure, and the first magnetic circuit assembly and the second magnetic circuit assembly are respectively disposed in the housing structure and connected to the magnetic yoke.

The second aspect of the present utility model also proposes an electronic device having the sound emitting apparatus as described in any one of the above.

The foregoing description is only an overview of the present utility model, and is intended to be implemented in accordance with the teachings of the present utility model in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present utility model more readily apparent.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. Wherein:

FIG. 1 is a schematic diagram of a sound generating apparatus according to an embodiment of the present utility model;

FIG. 2 is a top view of a sound emitting device according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a cross-sectional A-A configuration of a sound emitting device according to an embodiment of the present utility model;

Fig. 4 is an exploded view of a sound emitting device according to an embodiment of the present utility model.

The reference numerals in the drawings are as follows:

1. A sound producing device;

10. A housing; 11. a first housing portion; 111. a first mounting port; 12. a second housing portion; 121. a second mounting port; 13. a first support portion; 14. a second supporting part;

20. A first sound generating unit; 21. a first vibration assembly; 211. a first diaphragm; 212. a first voice coil; 213. a first reinforcing layer; 214. a first centering support; 22. a first magnetic circuit assembly; 221. a first magnet group; 2211. a first center magnet; 2212. a first central magnetically permeable plate; 2213. a first side magnetic conductive plate; 222. a second magnet group; 223. a first magnetic gap;

30. A second sound generating unit; 31. a second vibration assembly; 311. a second diaphragm; 312. a second voice coil; 313. a second reinforcing layer; 314. a second centering support; 32. a second magnetic circuit assembly; 321. a second center magnet; 322. a second side magnet; 323. a second central magnetically permeable plate; 324. a second side magnetic conductive plate; 325. a second magnetic gap;

40. A yoke.

Detailed Description

Exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For ease of description, in the context of this specification, when an element is referred to as being "on" another element, it can be directly on the other element or be indirectly on the other element with one or more intervening elements interposed therebetween. Also, in the context of this specification, when an element is referred to as being "connected" or "coupled" or "attached" to another element, it can be directly connected or coupled or attached to the other element or be indirectly connected, coupled or attached to the other element with one or more intervening elements interposed therebetween. In addition, when an element is referred to as being "engaged" with another element, it can be directly engaged or contacted with the other element or be indirectly engaged or contacted with the other element with one or more intervening elements interposed therebetween.

Spatially relative terms, such as "inner," "outer," "lower," "upper," and the like, may also be used herein to describe one element's or feature's relationship to another element's or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Accordingly, the example term "below … …" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

In order to solve the problem that a large amount of internal space of the intelligent equipment is occupied when the low-frequency loudspeaker and the high-frequency loudspeaker are installed simultaneously, the utility model provides a sound generating device and electronic equipment with the sound generating device, the electronic equipment can be a plurality of intelligent equipment such as a mobile phone, a tablet personal computer, an AR or a VR, and the like, and the sound generating device can be the loudspeaker of the electronic equipment. The sound generating device and the electronic equipment with the sound generating device can effectively reduce the space occupied by the voice coil in the high-frequency sound generating unit in the plane parallel to the vibrating diaphragm, so that the space occupied by the high-frequency sound generating unit in the plane parallel to the vibrating diaphragm is reduced, and the space occupation rate of the sound generating device is further reduced.

Referring to fig. 1 to 4, in some embodiments of the present utility model, a sound generating apparatus 1 includes a housing 10, at least one first sound generating unit 20 and at least one second sound generating unit 30, at least one first mounting opening 111 and at least one second mounting opening 121 are formed on the housing 10, at least part of the structure of the first sound generating unit 20 is disposed in the first mounting opening 111 and connected with the housing 10, the first sound generating unit 20 includes a first vibration assembly 21 and a first magnetic circuit assembly 22, the first vibration assembly 21 includes a first diaphragm 211 and a first voice coil 212, the first magnetic circuit assembly 22 is formed with a first magnetic gap 223, one end of the first voice coil 212 in a vibration direction is connected with the first diaphragm 211, the other end of the first voice coil 212 in the vibration direction is inserted in the first magnetic gap 223, and an axial direction of the first voice coil 212 is perpendicular to the vibration direction. At least part of the structure of the second sound generating unit 30 is disposed in the second mounting opening 121 and connected with the housing 10. Wherein the first sound generating unit 20 is a high-frequency sound generating unit, and the second sound generating unit 30 is a low-frequency sound generating unit.

In some embodiments of the present utility model, the number of the first mounting ports 111 may be one or more, and the number of the first sound generating units 20 is consistent with the number of the first mounting ports 111 and is disposed in one-to-one correspondence. The number of the second installation openings 121 may be one or more, and the number of the second sound emitting units 30 is consistent with the number of the second installation openings 121 and is set in one-to-one correspondence.

In some embodiments of the present utility model, the sound emission frequency of the high frequency sound emission unit is equal to or higher than 2000Hz, and the sound emission frequency of the low frequency sound emission unit is lower than 2000Hz.

In the existing integrated structure of the low-frequency sound generating unit and the high-frequency sound generating unit, the axial directions of voice coils of the low-frequency sound generating unit and the high-frequency sound generating unit are respectively perpendicular to the vibrating diaphragm, namely, the axial directions of the voice coils are consistent with the vibrating direction, so that the voice coils occupy a large amount of space along the radial direction, namely, occupy a large amount of space along the direction parallel to the vibrating diaphragm. In the present utility model, the axial direction of the first voice coil 212 in the first sound generating unit 20 is perpendicular to the vibration direction, and compared with the situation that the axial direction of the first voice coil 212 is consistent with the vibration direction, the space occupied by the first voice coil 212 along the plane parallel to the first diaphragm 211 can be reduced, so that the space occupied by the first sound generating unit 20 along the plane parallel to the first diaphragm 211 is reduced, and the space occupation rate of the sound generating device 1 is further reduced.

According to the utility model, the high-frequency sound generating unit and the low-frequency sound generating unit are simultaneously arranged on the shell 10, so that the frequency bandwidth of the sound generating device 1 can be widened, the sound effect of the sound generating device 1 is improved, the sound generating device 1 has both high-frequency sound generating performance and low-frequency sound generating performance, the structural compactness of the sound generating device 1 can be effectively improved, the volume of the sound generating device 1 is reduced, the small-size requirement is met, the sound generating device is convenient to be arranged in electronic equipment, and the space occupation rate of the sound generating device 1 in the electronic equipment is reduced.

As shown in fig. 1 to 4, in some embodiments of the present utility model, the second sound generating unit 30 includes a second vibration assembly 31 and a second magnetic circuit assembly 32, the second vibration assembly 31 includes a second diaphragm 311 and a second voice coil 312, the second magnetic circuit assembly 32 is formed with a second magnetic gap 325, one end of the second voice coil 312 in the vibration direction is connected to the second diaphragm 311, the other end of the second voice coil 312 in the vibration direction is inserted into the second magnetic gap 325, and the axial direction of the second voice coil 312 coincides with the vibration direction.

The second sound generating unit 30 in the present utility model adopts a structure of a conventional low frequency sound generating unit, thereby facilitating design.

In some embodiments of the present utility model, the first vibration component 21 further includes a first reinforcing layer 213 and a first positioning support 214, wherein the first reinforcing layer 213 is adhered to a surface of the first diaphragm 211 facing the first voice coil 212. One end of the first voice coil 212 is connected with the first reinforcing layer 213, and the other end of the first voice coil 212 is inserted into the first magnetic gap 223 and connected with the first centering support 214, so that the vibration stability of the first voice coil 212 is improved through the first centering support 214, and the polarization phenomenon is prevented.

In some embodiments of the present utility model, the second vibration assembly 31 further includes a second reinforcing layer 313 and a second centering support 314, where the second reinforcing layer 313 is attached to a surface of the second diaphragm 311 facing the second voice coil 312. One end of the second voice coil 312 is connected with the second reinforcing layer 313, and the other end of the second voice coil 312 is inserted into the second magnetic gap 325 and connected with the second centering support 314, so that the vibration stability of the second voice coil 312 is improved through the second centering support 314, and the polarization phenomenon is prevented.

As shown in connection with fig. 1-4, in some embodiments of the present utility model, the housing 10 may include a first housing portion 11 and a second housing portion 12 disposed side-by-side, the first housing portion 11 and the second housing portion 12 being connected and forming the housing 10. The first housing part 11 and the second housing part 12 are respectively formed with accommodating cavities, the first housing part 11 is formed with a first mounting opening 111 communicated with the inner accommodating cavities, the second housing part 12 is formed with a second mounting opening 121 communicated with the inner accommodating cavities, part of the structure of the first sound generating unit 20 is spliced in the first housing part 11 through the first mounting opening 111, and the periphery of the first vibrating diaphragm 211 is fixed on the first housing part 11. The second sound generating unit 30 is inserted into the second housing 12 through the second mounting hole 121, and the outer periphery of the second diaphragm 311 is fixed on the second housing 12, so that the first sound generating unit 20 and the second sound generating unit 30 are assembled with the first housing 11 and the second housing 12 respectively, and form an integral structure.

As shown in fig. 1 to 4, in some embodiments of the present utility model, the housing 10 may be formed as a unitary structure, and the housing 10 includes a first supporting portion 13 located at a middle position and second supporting portions 14 located at both sides of the first supporting portion 13, the first supporting portion 13 and the second supporting portions 14 at both sides cooperate to define a first mounting opening 111 and a second mounting opening 121, respectively, and the first diaphragm 211 and the second diaphragm 311 are located at both sides of the first supporting portion 13 and connected to the first supporting portion 13 and the second supporting portion 14, respectively.

As shown in connection with fig. 1 to 4, in some embodiments of the present utility model, the sound radiating area of the first diaphragm 211 is smaller than that of the second diaphragm 311.

Specifically, the sound radiation area of the sound generating unit refers to the effective area of the diaphragm in contact with moving air when the diaphragm vibrates. The larger the sound radiation area, the lower the resonance frequency of the sound emitting unit. Since the first sound generating unit 20 is a high-frequency sound generating unit and the second sound generating unit 30 is a low-frequency sound generating unit, the resonance frequency of the first sound generating unit 20 is greater than that of the second sound generating unit 30, and thus the sound radiation area of the first diaphragm 211 is set to be smaller than that of the second diaphragm 311. In the case that the sound radiating area of the first diaphragm 211 is smaller than that of the second diaphragm 311, it is advantageous to increase the response frequency range of the sound generating apparatus 1, so that the tone is clearer and louder.

As shown in connection with fig. 1 to 4, in some embodiments of the present utility model, the first diaphragm 211 and the second diaphragm 311 are in a unitary structure. Or the first diaphragm 211 and the second diaphragm 311 are of a split type structure. Or the first diaphragm 211, the second diaphragm 311 and the housing 10 are integrally injection-molded.

In some embodiments of the present utility model, the first diaphragm 211 and the second diaphragm 311 may be configured as an integrated structure, which can simplify the processing procedure of the diaphragms, reduce the production cost, and simultaneously, the integrated structure may reduce the complexity of installing the diaphragms. Specifically, a connection portion may be further disposed between the first diaphragm 211 and the second diaphragm 311, and the first diaphragm 211 and the second diaphragm 311 are connected through the connection portion. The first mounting port 111 and the second mounting port 121 are separated by the first supporting portion 13. When the first diaphragm 211 and the second diaphragm 311 with integrated structures are assembled in the housing 10, the first diaphragm 211 may be covered at the first mounting opening 111, and the second diaphragm 311 may be covered at the second mounting opening 121. Meanwhile, the connecting part is attached and connected to the first supporting part 13, so that the connection strength between the first vibrating diaphragm 211 and the second vibrating diaphragm 311 with the integrated structure and the shell 10 is improved.

It will be understood, of course, that the first diaphragm 211 and the second diaphragm 311 may be separately provided, and the first diaphragm 211 and the second diaphragm 311 may be respectively assembled to the housing 10.

In one specific example of the present utility model, the first diaphragm 211, the second diaphragm 311, and the housing 10 are formed as an integral injection-molded piece. That is, the first diaphragm 211 and the second diaphragm 311 which are integrally arranged can be put into a mold, then liquid plastic is injected into the mold, and the first diaphragm 211, the second diaphragm 311 and the housing 10 which are integrally formed can be formed after pressure maintaining and mold opening, so that the structural design of the sound generating device 1 is simpler, and the assembly efficiency of the sound generating device 1 is improved.

As shown in connection with fig. 1-4, in some embodiments of the present utility model, the equivalent mass of the first vibration assembly 21 is less than the equivalent mass of the second vibration assembly 31.

Specifically, the equivalent mass of the sound generating unit is also referred to as a vibration mass, and is the sum of the static mass of the vibration system of the sound generating unit (which refers to the mass of the diaphragm and the sound generating unit itself) and the equivalent vibration mass (which refers to the mass of a part of the air layer along with the vibration of the two sides of the diaphragm). The equivalent mass of the vibration assembly is directly related to the resonance frequency of the sound generating unit, and the smaller the equivalent mass is, the higher the resonance frequency is. Since the resonance frequency of the first sound generating unit 20 is greater than the vibration frequency of the second sound generating unit 30, the equivalent mass of the first vibration assembly 21 is set smaller than that of the second vibration assembly 31.

In some embodiments of the present utility model, the voice coil wire of the first voice coil 212 may be made of copper clad aluminum material, while the voice coil wire of the second voice coil 312 is copper wire. Since the density of the metal aluminum is smaller than that of the metal copper, the mass of the first voice coil 212 made of the copper-clad aluminum material is lower than that of the copper wire voice coil, so that the mass of the first voice coil 212 can be reduced, thereby promoting that the equivalent mass of the first vibration assembly 21 is smaller than that of the second vibration assembly 31. Meanwhile, the voice coil wire with copper clad aluminum or the copper voice coil wire has the characteristics of good conductivity and low material cost, and is beneficial to reducing the manufacturing cost of the voice coil.

As shown in fig. 1 to 4, in some embodiments of the present utility model, the first sound generating unit 20 and the second sound generating unit 30 have a substantially rectangular structure, respectively, and the short axis direction of the first sound generating unit 20 is identical to or perpendicular to the long axis direction of the second sound generating unit 30.

In some embodiments of the present utility model, the housing 10 is of generally rectangular configuration and has a length direction and a width direction. The arrangement of the first sound generating unit 20 and the second sound generating unit 30 into the rectangular structure can adapt to the rectangular structure of the shell 10, the ratio of the first mounting opening 111 to the second mounting opening 121 on the shell 10 is increased, the space utilization rate of the first sound generating unit 20 and the second sound generating unit 30 in the sound generating device 1 is improved, and the volume of the sound generating device 1 is reduced. While the long axes of the first and second sound emitting units 20 and 30 are installed parallel or perpendicular to each other, the installation flexibility of the sound emitting units can be improved.

As shown in connection with fig. 1-4, in some embodiments of the present utility model, the first voice coil 212 includes a pair of long axis sides extending in an axial direction thereof and spaced apart in a vibration direction thereof. Wherein, the long axis side near the first diaphragm 211 is connected with the first diaphragm 211 and is located outside the first magnetic gap 223. Thus, a long axis side away from the first diaphragm 211 is positioned in the first magnetic gap 223, and a magnetic field force generated by a magnetic induction line in the first magnetic gap 223 acts on the long axis side to drive the first voice coil 212 to vibrate up and down. By the above arrangement, the structural design of the vibration system of the first sound generating unit 20 can be made simpler.

Referring to fig. 1 to 4, in some embodiments of the present utility model, a long axis side near the first diaphragm 211 is connected to the first diaphragm 211 through a skeleton (not shown), and a pair of long axis sides are located in the first magnetic gap 223.

Wherein the skeleton may be formed by extending the first reinforcing layer 213 toward the first voice coil 212, or the skeleton may be connected to the first reinforcing layer 213 by bonding. By connecting the first diaphragm 211 and the first voice coil 212 through the frame, the two long axis sides of the first voice coil 212 can be respectively disposed in the first magnetic gap 223, so that the magnetic force acting on the first voice coil 212 can be increased, and the sound producing effect of the first sound producing unit 20 can be improved.

As shown in fig. 1 to 4, in some embodiments of the present utility model, the first magnetic circuit assembly 22 includes two magnet groups disposed at intervals, a first magnetic gap 223 is formed between the two magnet groups, and any one of the magnet groups includes a magnet and a magnetically permeable plate disposed in a stacked manner.

For example, when the first voice coil 212 is connected to the first diaphragm 211 near the long axis side of the first diaphragm 211 and is located outside the first magnetic gap 223, that is, when only one long axis side of the first voice coil 212 is located in the first magnetic gap 223, the magnet group may include one magnetic conductive plate and one magnet that are stacked, and the long axis side located in the first magnetic gap 223 corresponds to the magnetic gap between the magnetic conductive plate and the magnet. When the first voice coil 212 is connected to the first diaphragm 211 through the skeleton, that is, two long axis sides of the first voice coil 212 are both located in the first magnetic gap 223, the magnet group may include a first magnetic conductive plate, a first magnet, a second magnetic conductive plate, and a second magnet that are sequentially stacked, where one long axis side corresponds to a magnetic gap between the first magnetic conductive plate and the first magnet, and the other long axis side corresponds to a magnetic gap between the second magnetic conductive plate and the second magnet.

In some embodiments of the present utility model, the first magnetic circuit assembly 22 includes a first magnet group 221 and a second magnet group 222 disposed at intervals along the axial direction of the first voice coil 212, wherein the first magnet group 221 and the second magnet group 222 may have a symmetrical structure, and only the first magnet group 221 is illustrated for convenience of description. The first magnet set 221 includes two first center magnets 2211, a first center magnetic conductive plate 2212 is sandwiched between the two first center magnets 2211, and a first side magnetic conductive plate 2213 is further attached to a surface of the first center magnet 2211, which is close to the first diaphragm 211 and faces the first diaphragm 211, so as to be used for improving the magnetic field strength of the first magnetic circuit assembly 22.

As shown in fig. 1 to 4, in some embodiments of the present utility model, the second magnetic circuit assembly 32 includes a second center magnet 321 and at least two second side magnets 322, and the at least two second side magnets 322 are respectively spaced apart from the second center magnet 321, and a second magnetic gap 325 is formed between the second center magnet 321 and the second side magnets 322. The second center magnet 321 is provided with a second center magnetic conductive plate 323 towards the surface of the second diaphragm 311, and the second side magnet 322 is provided with a second side magnetic conductive plate 324 towards the surface of the second diaphragm 311, so as to be used for improving the magnetic field intensity of the second magnetic circuit assembly 32.

As shown in fig. 1 to 4, in some embodiments of the present utility model, the magnetic yoke 40 is connected to the housing 10 and forms a housing structure, and the first magnetic circuit assembly 22 and the second magnetic circuit assembly 32 are respectively disposed in the housing structure and connected to the magnetic yoke 40.

The first magnetic circuit assembly 22 and the second magnetic circuit assembly 32 are fixed by the magnetic yoke 40 and are connected with the shell 10 through the magnetic yoke 40, and the first magnetic circuit assembly 22 and the second magnetic circuit assembly 32 are arranged in the containing structure formed by connecting the magnetic yoke 40 with the shell 10. Meanwhile, the yoke 40 can further raise the magnetic field strength of the first and second magnetic circuit assemblies 22 and 32.

The second aspect of the present utility model also proposes an electronic device having the sound emitting apparatus 1 of any one of the embodiments described above.

The electronic device can be a mobile phone, a tablet computer, an AR or VR and other intelligent devices, and the sounding device 1 can be a loudspeaker of the electronic device. The electronic equipment with the sound generating device 1 can effectively reduce the space occupied by the voice coil in the high-frequency sound generating unit in the plane parallel to the vibrating diaphragm, so that the space occupied by the high-frequency sound generating unit in the plane parallel to the vibrating diaphragm is reduced, and the space occupation rate of the sound generating device 1 in the electronic equipment is further reduced.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims

1. A sound emitting device, comprising:

2. The sound generating apparatus according to claim 1, wherein the second sound generating unit includes a second vibration assembly and a second magnetic circuit assembly, the second vibration assembly includes a second diaphragm and a second voice coil, the second magnetic circuit assembly is formed with a second magnetic gap, one end of the second voice coil along the vibration direction is connected to the second diaphragm, the other end of the second voice coil along the vibration direction is inserted into the second magnetic gap, and the axial direction of the second voice coil is consistent with the vibration direction.

3. The sound emitting apparatus of claim 2 wherein the sound radiating area of the first diaphragm is smaller than the sound radiating area of the second diaphragm;

4. The sound generating apparatus of claim 2, wherein the first diaphragm and the second diaphragm are of unitary construction;

5. The sound generating apparatus according to claim 2, wherein the housing includes a first housing portion and a second housing portion arranged side by side, the first housing portion being provided with the first mounting port, the second housing portion being provided with the second mounting port, an outer periphery of the first diaphragm being fixed to the first housing portion, and an outer periphery of the second diaphragm being fixed to the second housing portion;

6. The sound emitting apparatus of any one of claims 1-5 wherein the first voice coil comprises a pair of long axis sides extending axially thereof and spaced apart along the direction of vibration thereof,

7. The sound generating apparatus according to any one of claims 1 to 5, wherein the first sound generating unit and the second sound generating unit are each of a substantially rectangular structure, and a short axis direction of the first sound generating unit is coincident with or perpendicular to a long axis direction of the second sound generating unit.

8. The sound generating apparatus according to any one of claims 1 to 5, wherein the first magnetic circuit assembly includes two magnet groups disposed at an interval, the first magnetic gap being formed between the two magnet groups, and any one of the magnet groups includes a magnet and a magnetically permeable plate disposed in a stacked manner.

9. The sound emitting apparatus of any one of claims 2-5, further comprising a magnetic yoke coupled to the housing and forming a receiving structure, the first magnetic circuit assembly and the second magnetic circuit assembly being disposed within the receiving structure and coupled to the magnetic yoke, respectively.

10. An electronic device characterized by having the sound emitting apparatus according to any one of claims 1 to 9.