CN219876110U - Sound generating device and electronic equipment - Google Patents

Abstract

The utility model discloses a sound generating device and electronic equipment. The magnetic circuit system is arranged on the shell and is provided with a plurality of magnetic gaps which are sequentially arranged at intervals along the circumferential direction of the magnetic circuit system; the vibration system comprises a vibration film assembly and a voice coil assembly, wherein the vibration film assembly comprises a vibration film and a ball top, the vibration film comprises a body and a conductive film, the body and the conductive film are arranged in a stacked manner, and the ball top is connected with the center of the vibration film; the voice coil assembly comprises voice coils which are arranged in one-to-one correspondence with the magnetic gaps, one end of each voice coil is connected with the vibrating diaphragm assembly, and the other end of each voice coil is inserted into the corresponding magnetic gap; the voice coil assembly is provided with a lead part, the ball top is provided with a through part, and the voice coil correspondingly passes through the through part through the lead part and is electrically connected with the conductive diaphragm. The sounding device provided by the utility model has the advantages of saving the internal space, realizing maximization of the magnetic circuit system and stabilizing the electric connection.

Description

Sound generating device and electronic equipment

Technical Field

The present utility model relates to electroacoustic devices, and more particularly, to a sound generating device and an electronic device.

Background

The loudspeaker is a transducer for converting electric signals into acoustic signals, and is widely applied to electronic equipment such as mobile phones, computers and the like. Generally, a speaker includes a diaphragm assembly, a voice coil coupled to one side of the diaphragm assembly, and terminals electrically connected to the voice coil and an external circuit, respectively, and a lead portion of the voice coil is electrically connected to pads on the terminals by soldering. Or, the loudspeaker further comprises a centering support piece, a first bonding pad is arranged on the centering support piece, a second bonding pad is arranged on the wiring terminal, the lead part of the voice coil is electrically connected with the first bonding pad, and the first bonding pad on the centering support piece is electrically connected with the second bonding pad on the wiring terminal, so that the conduction of the internal circuit and the external circuit is realized.

However, when the lead portion is directly electrically connected to the bonding pad of the external terminal, the lead portion needs to be threaded along a certain length, so that the amplitude of the voice coil cannot be too large to prevent the occurrence of wire breakage, thereby affecting the sound production effect of the speaker. The above-mentioned circumstances that sets up centering piece, though can solve the problem of broken string, but centering piece occupy a part installation space, and magnetic circuit need dodge centering piece moreover, has not only satisfied the frivolous demand of speaker, and magnetic circuit's B value is less moreover to the sound production sensitivity of speaker has been reduced.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the sound generating device which has the advantages of saving the internal space, high sound generating sensitivity and stable electric connection.

The utility model also provides electronic equipment with the sounding device.

According to an embodiment of the first aspect of the present utility model, a sound emitting device includes: a housing; the magnetic circuit system is arranged on the shell and is provided with a plurality of magnetic gaps, and the magnetic gaps are sequentially arranged at intervals along the circumferential direction of the magnetic circuit system; the vibration system comprises a vibration film assembly and a voice coil assembly, wherein the vibration film assembly comprises a vibration film and a ball top, the vibration film comprises a body and a conductive diaphragm, the body and the conductive diaphragm are arranged in a stacked mode, the ball top is connected with the center of the vibration film, the voice coil assembly comprises voice coils which are arranged in one-to-one correspondence with a plurality of magnetic gaps, one end of each voice coil is connected with the vibration film assembly, and the other end of each voice coil is inserted into the corresponding magnetic gap; the voice coil assembly is provided with a lead part, the dome is provided with a through part, and the voice coil passes through the lead part to correspondingly pass through the through part to be electrically connected with the conductive diaphragm.

According to the sound production device of the embodiment of the first aspect of the utility model, the vibrating diaphragm assembly comprises the vibrating diaphragm and the ball top, the vibrating diaphragm is provided with the body and the conductive diaphragm, the body and the conductive diaphragm are arranged in a stacked mode, the ball top is arranged at the center of the vibrating diaphragm, the voice coil assembly is provided with a plurality of voice coils, the conductive diaphragm is arranged at one side of the body, which is close to the voice coil assembly, the voice coil assembly is provided with the lead wire part, the ball top is provided with the through part, and the lead wire part of the voice coils correspondingly penetrates through the through part and is electrically connected with the conductive diaphragm. The setting has cancelled the setting of centering piece, has practiced thrift the inside space of sound generating mechanism, and magnetic circuit can realize the maximize design, can increase magnetic circuit's B value from this, and then can promote sound generating mechanism's sound production sensitivity. Simultaneously, the voice coil loudspeaker voice coil lead wire is connected with electrically conductive diaphragm electricity through the through-portion of ball top for voice coil loudspeaker voice coil subassembly and electrically conductive diaphragm synchronous vibration for the voice coil loudspeaker voice coil lead wire shortens along the line distance, thereby can reduce the risk of lead wire portion broken wire, has promoted the stability of sound generating mechanism electricity connection.

According to some embodiments of the utility model, a conductive adhesive is disposed between the lead portion and the conductive film.

According to some embodiments of the utility model, the housing is provided with a wire inlet terminal and a wire outlet terminal, the voice coil assembly comprises a first voice coil and a second voice coil which are connected in series, the wire leading part comprises a first wire inlet end and a first wire outlet end which are arranged on the first voice coil, and a second wire inlet end and a second wire outlet end which are arranged on the second voice coil, the conductive membrane comprises a first conductive film and a second conductive film, the through part comprises a first through hole and a second through hole, one end of the first conductive film is electrically connected with the wire inlet terminal, the first wire inlet end passes through the first through hole and is electrically connected with the other end of the first conductive film, the first wire outlet end is electrically connected with the second wire inlet end, the second wire outlet end passes through the second through hole and is electrically connected with one end of the second conductive film, and the other end of the second conductive film is electrically connected with the wire outlet terminal.

According to some embodiments of the utility model, the housing is provided with a wire inlet terminal and a wire outlet terminal, the voice coil assembly comprises a first voice coil and a second voice coil which are connected in parallel, the wire leading part comprises a first wire inlet end and a first wire outlet end which are arranged on the first voice coil, and a second wire inlet end and a second wire outlet end which are arranged on the second voice coil, the conductive membrane comprises a first conductive film and a second conductive film, the through part comprises a first through hole and a second through hole, one end of the first conductive film is electrically connected with the wire inlet terminal, the first wire inlet end and the second wire inlet end are electrically connected with the other end of the first conductive film through the first through hole, the first wire outlet end and the second wire outlet end are electrically connected with one end of the second conductive film through the second through hole, and the other end of the second conductive film is electrically connected with the wire outlet terminal.

In some embodiments of the present utility model, the top of the ball is formed into a square structure, the top of the ball includes a first straight edge and a second straight edge that are connected end to end, a corner is formed at a connection position of the first straight edge and the second straight edge, the first through hole and the second through hole are disposed at two corners of the top of the ball, the through hole further includes a third through hole and a fourth through hole, the first through hole, the second through hole, the third through hole and the fourth through hole have the same external dimensions, and the third through hole and the fourth through hole are disposed at the other two corners of the top of the ball respectively.

In some embodiments of the utility model, the first via is diagonally disposed from the second via; or the first through hole and the second through hole are respectively positioned at two ends of the first straight edge; or the first through hole and the second through hole are respectively positioned at two ends of the second straight edge.

In some embodiments of the present utility model, the second through hole is provided with a first communicating opening communicated with an outer edge of the dome, the through part diagonally arranged with the second through hole is provided with a second communicating opening communicated with the outer edge of the dome, and the external dimensions of the first communicating opening and the second communicating opening are consistent.

In some embodiments of the present utility model, the diaphragm is formed in a square structure, and the conductive film further includes two auxiliary conductive films, wherein the auxiliary conductive films are consistent with the first conductive film and the second conductive film in external dimensions, and the first conductive film, the second conductive film and the two auxiliary conductive films are respectively disposed at four corners of the body.

According to some embodiments of the utility model, the conductive membrane is injection molded/hot pressed integrally with the body; or, the conductive membrane is connected with the body in an adhesive manner; or, the conductive film is formed by coating conductive paste on the surface of the body.

According to some embodiments of the utility model, the dome is composed of an insulating material; or, the dome comprises a metal part and an insulating part arranged on the metal part, and the conducting membrane and the metal part and the lead part and the metal part are arranged in an insulating way through the insulating part at intervals.

An electronic device according to an embodiment of the second aspect of the present utility model includes the sound emitting apparatus according to the above-described embodiment of the present utility model.

According to the electronic equipment provided by the embodiment of the utility model, the sounding device is arranged, the setting of the centering support piece is omitted, the internal space is saved, the magnetic circuit system can realize the maximum design, the electrical connection stability is improved, the tone quality of the electronic equipment can be effectively improved, and the miniaturized design requirement of the electronic equipment can be met.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of an exploded construction of a sound emitting device according to one embodiment of the present utility model;

FIG. 2 is a schematic diagram of a diaphragm of a sound generating apparatus according to an embodiment of the present utility model

FIG. 3 is a schematic diagram of a dome structure of a sound emitting device according to one embodiment of the present utility model;

FIG. 4 is a schematic diagram of the voice coil assembly of a sound emitting device according to one embodiment of the present utility model;

FIG. 5 is a top view of a sound emitting device according to one embodiment of the present utility model;

FIG. 6 is a cross-sectional view of the sound emitting device of FIG. 5 taken along the direction A-A in accordance with one embodiment of the present utility model;

FIG. 7 is a cross-sectional view of the sound emitting device of FIG. 5 taken along the direction B-B in accordance with one embodiment of the present utility model;

fig. 8 is a cross-sectional view of a sound emitting device according to an embodiment of the present utility model along a direction perpendicular to a vibration direction.

Reference numerals:

the sound-emitting device 100 is configured to emit light,

the housing 1, the inlet terminals 11, the outlet terminals 12,

the magnetic circuit system 2, the central magnet 21, the central washer 22, the first side magnet 23, the first side washer 24, the second side magnet 25, the second Bian Huasi, the magnetic yoke 27, the first magnetic gap 28, the second magnetic gap 29,

vibration system 3, diaphragm assembly 31, diaphragm 32, body 321, conductive diaphragm 322, first conductive film 3221, second conductive film 3222, first auxiliary conductive film 3223, second auxiliary conductive film 3224, dome 33, first straight edge 3301, second straight edge 3302, through portion 331, first through hole 3311, second through hole 3312, third through hole 3313, fourth through hole 3314, first through hole gap 3315, second through hole gap 3316, voice coil assembly 34, first voice coil 341, second voice coil 342, first inlet end 351, first outlet end 352, second inlet end 361, second outlet end 362.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar components or components having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

A sound emitting device 100 according to an embodiment of the first aspect of the present utility model is described in detail below with reference to fig. 1 to 8, and the sound emitting device 100 may be a speaker unit.

As shown in fig. 1 to 8, a sound emitting device 100 according to an embodiment of the first aspect of the present utility model includes: a shell 1, a magnetic circuit system 2 and a vibration system 3.

The shape of the housing 1 may be flexibly designed according to practical situations, and specifically, in the embodiment shown in fig. 1, the housing 1 may have a first direction (a y direction shown in fig. 1) and a second direction (an x direction shown in fig. 1) perpendicular to each other. For example, the case 1 may be formed in a rectangular parallelepiped structure, the first direction may be a length direction of the rectangular parallelepiped, and the second direction may be a width direction of the rectangular parallelepiped. The Z direction shown in fig. 1 is a direction perpendicular to a plane in which the longitudinal direction and the width direction are located, and this direction is a vibration direction of the vibration system 3 of the sound generating apparatus 100, that is, a thickness direction of the sound generating apparatus 100. In this embodiment, the housing 1 may be a square annular frame with two open ends, and the magnetic circuit system 2 and the vibration system 3 are relatively disposed on two sides of the housing 1 and jointly enclose an internal installation space.

The magnetic circuit 2 may be fixed to the housing 1, and the magnetic circuit 2 may include a yoke 27, a central magnetic portion, and a plurality of side magnetic portions. The yoke 27 is fixed to one end of the housing 1, and the center magnetic portion and the plurality of side magnetic portions are fixed to a surface of the yoke 27 on a side close to the vibration system 3. The plurality of side magnetic parts are sequentially arranged around the circumference of the central magnetic part, the central magnetic part and the plurality of side magnetic parts define a plurality of magnetic gaps, and the plurality of magnetic gaps are sequentially arranged at intervals along the circumference of the magnetic circuit system 2.

Specifically, as shown in the embodiment of fig. 1, 6 and 7, the central magnetic portion may include a central magnet 21 and a central washer 22 stacked in order along the thickness direction of the sound generating apparatus 100, and the side magnetic portion may include a first side magnetic portion including a first side magnet 23 circumferentially spaced around the central magnet 21 and a first side washer 24 disposed on a side of the first side magnet 23 near the vibration system 3, with a first magnetic gap 28 defined therebetween. The second side magnetic part comprises second side magnets 25 circumferentially arranged around the first side magnets 23 at intervals and second Bian Huasi arranged on one side of the second side magnets 25 close to the vibration system 3, wherein the second side magnets Bian Huasi can be connected to the inner side wall of the shell 1 in an injection molding way so as to improve the connection stability of the second side magnets Bian Huasi, and a second magnetic gap 29 is defined between the first side magnetic part and the second side magnetic part. It should be emphasized that the number of the side magnetic portions is not limited to two, and the number of the side magnetic portions may be plural, and accordingly, the magnetic gaps disposed at intervals along the circumferential direction of the magnetic circuit system 2 may be plural.

As shown in fig. 1 and 2, the vibration system 3 may include a diaphragm assembly 31 and a voice coil assembly 34, the diaphragm assembly 31 may include a diaphragm 32 and a dome 33, the diaphragm 32 is fixed on a periphery of the housing 1 and is opposite to the magnetic circuit system 2, the dome 33 is fixed on a side of the diaphragm 32 facing the magnetic circuit system 2, and the dome 33 may be fixedly connected with a central position of the diaphragm 32. Specifically, the center of the diaphragm 32 may be hollowed, and the center of the dome 33 is exposed outside the sound generating device 100 through the center of the diaphragm 32, and the edge of the dome 33 surrounding the center is fixedly connected with the side of the diaphragm 32 facing the magnetic circuit system 2.

As shown in fig. 1 and 5, the diaphragm 32 may include a body 321 and a conductive diaphragm 322, where the conductive diaphragm 322 and the body 321 are stacked in a vibration direction of the vibration system 3, and the conductive diaphragm 322 is disposed on a side of the body 321 near the voice coil assembly 34. Specifically, the conductive diaphragm 322 may be formed by, but is not limited to, coating a conductive material on a side of the body 321 of the diaphragm 32 adjacent to the voice coil assembly 34. The voice coil assembly 34 may include voice coils corresponding to the magnetic gaps one by one, one end of each voice coil is fixedly connected with the diaphragm assembly 31, and the other end of each voice coil is inserted into the corresponding magnetic gap. The number of "plural" in the above is at least two. During operation of the sound generating device 100, the voice coil assembly 34 interacts with the magnetic circuit system 2 to drive the diaphragm assembly 31 to vibrate and generate sound.

Specifically, as shown in fig. 1, 6 and 7, the voice coil assembly 34 may include a first voice coil 341 and a second voice coil 342 disposed corresponding to the first magnetic gap 28 and the second magnetic gap 29, respectively, and the first voice coil 34 is disposed around the outer circumference of the second voice coil 342 and spaced apart from the second voice coil 342. One end of the first voice coil 341 and the second voice coil 342, which is close to the diaphragm assembly 31, is fixedly connected with one side of the dome 33, which is close to the magnetic circuit system 2, and one ends of the first voice coil 341 and the second voice coil 342, which are far away from the diaphragm assembly 31, are respectively inserted into the first magnetic gap 28 and the second magnetic gap 29.

Further, the voice coil assembly 34 is provided with a lead portion, the dome 33 is provided with a through portion 331, and the voice coil assembly 34 is electrically connected to the conductive diaphragm 322 by passing through the lead portion through the through portion 331.

Specifically, as shown in fig. 1, 3 and 4, the conductive diaphragm 322 and the voice coil assembly 34 are disposed on opposite sides of the dome 33, respectively. The conductive diaphragm 322 is fixedly connected between the body 321 of the diaphragm 32 and the dome 33, and the voice coil assembly 34 is fixed on one side of the dome 33 close to the magnetic circuit system 2. The voice coil assembly 34 is provided with a lead portion for conducting a circuit, specifically, one end of the conductive diaphragm 322 is electrically connected with a conductive structure such as a bonding pad provided on the housing 1 for conducting an external circuit, the other end of the conductive diaphragm 322 extends to the through portion 331 of the dome 33, and the lead portion of the voice coil assembly 34 passes through the through portion 331 and is electrically connected with the other end of the conductive diaphragm 322, thereby conducting the voice coil assembly 34 and the external circuit.

According to the sound generating device 100 of the first embodiment of the present utility model, the diaphragm assembly 31 includes a diaphragm 32 and a dome 33, the diaphragm 32 is provided with a body 321 and a conductive diaphragm 322, the body 321 and the conductive diaphragm 322 are stacked along the vibration direction of the diaphragm 32, the dome 33 is provided at the center of the diaphragm 32, the voice coil assembly 34 is provided with a plurality of voice coils, the conductive diaphragm 322 is provided at one side of the body 321 near the voice coil assembly 34, the voice coil assembly 34 is provided with a lead portion, the dome 33 is provided with a through portion 331, and the lead portion of the voice coil is correspondingly electrically connected to the conductive diaphragm 322 through the through portion 331. So set up, cancelled the setting of centering piece, practiced thrift the inside space of sound generating mechanism 100, magnetic circuit 2 can realize the maximize design, can increase magnetic circuit 2's B value from this, and then can promote sound generating mechanism's sound production sensitivity. Meanwhile, the lead wire of the voice coil is electrically connected with the conductive diaphragm 322 through the through part 331 of the dome 33, and the voice coil assembly 34 and the conductive diaphragm 322 vibrate synchronously, so that the distance between the lead wire of the voice coil and the wire is shortened, the risk of wire breakage of the lead wire part can be reduced, and the stability of the electrical connection of the sound generating device 100 is improved.

According to some embodiments of the present utility model, a conductive paste is disposed between the lead portion of the voice coil assembly 34 and the conductive diaphragm 322. Because, in general, the lead portion of the voice coil assembly 34 for electrical connection is a metal wire exposed outside after the enameled wire is removed from the voice coil lead, the cross-sectional area of the metal wire is smaller, and the metal wire is directly bonded and fixed with the conductive diaphragm 322 to achieve electrical connection, so that the stability and the conductive effect are poor. The conductive adhesive is coated between the lead portion of the voice coil assembly 34 and the conductive diaphragm 322, so that the connection stability between the voice coil lead and the conductive diaphragm 322 can be improved, and the conductive effect is better.

According to some embodiments of the present utility model, the case 1 is provided with the wire inlet terminal 11 and the wire outlet terminal 12, the plurality of voice coils of the voice coil assembly 34 includes the first voice coil 341 and the second voice coil 342 connected in series, the wire part includes the first wire inlet end 351 and the first wire outlet end 352 provided to the first voice coil 341, and the second wire inlet end 361 and the second wire outlet end 362 provided to the second voice coil 342, the conductive film 332 includes the first conductive film 3221 and the second conductive film 3222, the through part 331 includes the first through hole 3311, the second through hole 3312, wherein one end of the first conductive film 3221 is electrically connected to the wire inlet terminal 11, the first wire inlet end 351 is electrically connected to the other end of the first conductive film 3221 through the first through hole 3311, the first wire outlet end 352 is electrically connected to the second wire outlet end 361 through the second through hole 3312, and the other end of the second conductive film 3222 is electrically connected to the wire outlet terminal 12. Therefore, the voice coil assembly 34 is electrically connected with an external circuit, compared with the mode of adopting the centering support piece to perform electric connection, the internal space of the sound generating device 100 is saved, and the electric connection stability is higher.

Specifically, for example, in the embodiment shown in fig. 1 to 8, the housing 1 is provided with an inlet terminal 11 and an outlet terminal 12. The incoming and outgoing terminals 11, 12 may be pads fixed to the outside of the housing 1 by injection molding. The inlet terminal 11 and the outlet terminal 12 are connected to an external circuit. The incoming line terminal 11 and the outgoing line terminal 12 may be disposed on the same side in the longitudinal direction (e.g., y direction in fig. 5) of the sound generating device 100, on the same side in the width direction (e.g., x direction in fig. 5), or at diagonal positions, depending on practical applications. In the embodiment shown in fig. 6 and 7, the inlet terminal 11 and the outlet terminal 12 are respectively disposed at two corners on the same side of the sound generating device 100 in the length direction, and the corners are the connection points between the length direction and the width direction of the housing 1 or the diaphragm assembly 31 of the sound generating device 100 shown in fig. 5.

As shown in fig. 4 and 8, the voice coil assembly 34 includes a first voice coil 341 and a second voice coil 342 connected in series, an end of the first voice coil 341 away from the diaphragm assembly 31 is inserted into the first magnetic gap 28 defined by the center magnet 21 and the first side magnet 23, and an end of the second voice coil 342 away from the diaphragm assembly 31 is inserted into the second magnetic gap 29 defined by the first side magnet 23 and the second side magnet 25.

As shown in fig. 2 and 8, the conductive film 322 may include a first conductive film 3221 and a second conductive film 3222, where the first conductive film 3221 is disposed corresponding to the wire inlet terminal 11 of the housing 1, for example, the first conductive film 3221 may be disposed at a corner of the diaphragm assembly 31 along the length direction, the second conductive film 3222 is disposed corresponding to the wire outlet terminal 12 of the housing 1, and the second conductive film 3222 is disposed at another corner of the diaphragm assembly 31 along the length direction and is located on the same side of the diaphragm assembly 31 as the first conductive film 3221.

As shown in fig. 4, the lead portion of the voice coil assembly 34 may include a first lead-in terminal 351 and a first lead-out terminal 352 provided to the first voice coil 341, and a second lead-in terminal 361 and a second lead-out terminal 362 provided to the second voice coil 342. As shown in fig. 5 to 8, the first wire inlet end 351 is disposed corresponding to the first conductive film 3221, and the second wire outlet end 362 is disposed corresponding to the second conductive film 3222, that is, the first wire inlet end 351 and the second wire outlet end 362 are disposed at two corners of the same side of the sound generating device 100 along the length direction. It is understood that the wire outlet positions of the first wire inlet end 351, the first wire outlet end 352, the second wire inlet end 361 and the second wire outlet end 362 in the voice coil assembly 34 can be flexibly designed according to the arrangement positions of the wire inlet terminal 11, the wire outlet terminal 12, the first conductive film 3221, the second conductive film 3222 and the like.

As shown in fig. 3, the through portion 331 of the dome 33 may include a first through hole 3311 and a second through hole 3312, and the first through hole 3311 and the second through hole 3312 are located at the same side of the sound generating apparatus 100 in the length direction. As shown in fig. 5 to 8, the first through-hole 3311 is provided corresponding to the first conductive film 3221, and the second through-hole 3312 is provided corresponding to the second conductive film 3222. The first wire inlet end 351 of the first voice coil 341 is disposed corresponding to the first through hole 3311, the first wire inlet end 351 passes through the first through hole 3311 and extends to one end of the first through hole 3311 to be electrically connected with the first conductive film 3221, and the other end of the first conductive film 3221 is electrically connected with the wire inlet terminal 11. The first wire outlet end 352 of the first voice coil 341 and the second wire inlet end 361 of the second voice coil 342 are connected in series, and specifically, the first wire outlet end 352 and the second wire inlet end 361 may be electrically connected with the conductive diaphragm 322 through the penetration portion 331 of the dome 33, thereby improving connection stability of the first voice coil 341 and the second voice coil 342. The second wire outlet terminal 362 of the second voice coil 342 is disposed corresponding to the second through hole 3312, the second wire outlet terminal 362 extends to one end of the second through hole 3312 through the second through hole 3312 and the second conductive film 3222, and the other end of the second conductive film 3222 is electrically connected to the wire outlet terminal 12. Thereby, electrical connection of the voice coil assembly 34 to an external circuit is achieved.

According to some embodiments of the present utility model, the housing 1 is provided with an inlet terminal 11 and an outlet terminal 12, and the voice coil assembly 34 includes a first voice coil 341 and a second voice coil 342 connected in parallel. The lead portion of the voice coil assembly 34 includes a first lead-in terminal 351 and a first lead-out terminal 352 of the first voice coil 341, and a second lead-in terminal 361 and a second lead-out terminal 362 provided to the second voice coil 342. The conductive film 322 includes a first conductive film 3221 and a second conductive film 3222. The through portion 331 includes a first through hole 3311 and a second through hole 3312. One end of the first conductive film 3221 is electrically connected to the wire inlet terminal 11, and the first wire inlet terminal 351 and the second wire inlet terminal 361 are each electrically connected to the other end of the first conductive film 3221 through the first through hole 3311. The first wire outlet terminal 352 and the second wire outlet terminal 362 are electrically connected to one end of the second conductive film 3222 through the second through hole 3312, and the other end of the second conductive film 3222 is electrically connected to the wire outlet terminal 12. By the arrangement, the electrical connection mode of the lead wire part of the voice coil assembly 34 can be flexibly set according to the product requirement, meanwhile, the voice coil assembly 34, the dome 33, the conductive diaphragm 322 and an external circuit are connected in a parallel connection mode, so that the assembly efficiency can be improved.

Specifically, the voice coil assembly 34 includes a first voice coil 341 and a second voice coil 342. The first voice coil 341 and the second voice coil 342 may also be electrically connected in parallel. Specifically, the housing 1 is provided with an inlet terminal 11 and an outlet terminal 12, and the inlet terminal 11 and the outlet terminal 12 may be pads fixed to the outside of the housing 1 by injection molding. The inlet terminal 11 and the outlet terminal 12 are connected to an external circuit. The incoming line terminal 11 and the outgoing line terminal 12 may be disposed on the same side in the longitudinal direction (e.g., y direction in fig. 5) of the sound generating device 100, on the same side in the width direction (e.g., x direction in fig. 5), or at diagonal positions, depending on practical applications. The present utility model is not limited to the specific arrangement position.

Accordingly, the conductive film 322 includes a first conductive film 3221 and a second conductive film 3222, the first conductive film 3221 is disposed corresponding to the incoming terminal 11, and the second conductive film 3222 is disposed corresponding to the outgoing terminal 12. The through portion 331 of the dome 33 includes a first through hole 3311 and a second through hole 3312, the first through hole 3311 being provided corresponding to the first conductive film 3221, and the second through hole 3312 being provided corresponding to the second conductive film 3222.

The lead portion of the voice coil assembly 34 includes a first lead-in terminal 351 and a first lead-out terminal 352 provided to the first voice coil 341, and a second lead-in terminal 361 and a second lead-out terminal 362 provided to the second voice coil 342. The first and second lead-in terminals 351 and 361 are each disposed corresponding to the first through-hole 3311, and the first and second lead-in terminals 351 and 361 are each electrically connected to one end of the first through-hole 3311 extending to the first through-hole 3311 through the first through-hole 3311. The other end of the first conductive film 3221 is electrically connected to the wire inlet terminal 11. The first wire outlet end 352 and the second wire outlet end 362 are disposed corresponding to the second through hole 3312, and the first wire outlet end 352 and the second wire outlet end 362 pass through the second through hole 3312 and extend to one end of the second through hole 3312 to be electrically connected with the second conductive film 3222, and the other end of the second conductive film 3222 is electrically connected with the wire outlet terminal 12. Thus, the voice coil assembly 34 is electrically connected to an external circuit by way of a parallel connection.

In some embodiments of the present utility model, as shown in fig. 3, the dome 33 is formed in a square configuration, and the dome 33 includes a first straight edge 3301 and a second straight edge 3302 connected end-to-end. The junction of the first straight edge 3301 and the second straight edge 3302 forms a corner. The first through hole 3311 and the second through hole 3312 are disposed at two corners of the dome 33, and it is understood that the first through hole 3311 and the second through hole 3312 may be disposed at two corners adjacent to the same first straight edge 3301, may be disposed at two corners adjacent to the same second straight edge 3302, or may be disposed at two corners at diagonal positions. The through-hole 331 further includes a third through-hole 3313 and a fourth through-hole 3314, and the third through-hole 3313 and the fourth through-hole 3314 are provided at two corners other than the first through-hole 3311 and the second through-hole 3312. The third through-hole 3313, the fourth through-hole 3314, the second through-hole 3312, and the first through-hole 3311 are identical in outer shape and size. By the arrangement, the projection of the dome 33 on the plane perpendicular to the vibration direction of the diaphragm 32 is formed into an axisymmetric pattern or a centrosymmetric pattern, so that the mass distribution of the dome 33 is uniform, the vibration stability of the diaphragm assembly 34 is further ensured, and the polarization occurrence is reduced.

In some embodiments of the present utility model, the first through hole 3311 and the second through hole 3312 of the dome 33 are disposed diagonally, in other embodiments, the first through hole 3311 and the second through hole 3312 are disposed at two ends of the first straight side 3301 of the dome 33, respectively, and in other embodiments, the first through hole 3311 and the second through hole 3312 may be disposed at two ends of the second straight side 3302, respectively. In this way, the through part 331 can be flexibly arranged according to the layout requirement of the related structural components of the sound generating device 100, so as to increase the adaptability of the sound generating device 100.

As shown in fig. 3, in some embodiments of the present utility model, the second through hole 3312 is provided with a first communication opening 3315 communicating with the outer edge of the dome 33, and the through portion 331 diagonally disposed to the second through hole 3312 is provided with a second communication opening 3316 communicating with the outer edge of the dome. The first communication gap 3315 and the second communication gap 3316 are identical in shape and size. The first communicating opening 3315 and the second communicating opening 3316 are diagonally arranged, so that the diaphragm assembly 31 can be ensured to be stable in the vibration process. In addition, because the voice coil of the voice coil assembly 34 is wound in a winding manner, in the connection process, the lead portion of the voice coil assembly 34 occupies the space of the sound generating device 100 along the vibration direction of the diaphragm 32 in the arrangement process, and the lead portion of the voice coil assembly 34 can be arranged inside the first communication opening 3315 and the second communication opening 3316 by arranging the first communication opening 3315 and the second communication opening 3316, so that the matching structure of the lead portion and the dome 33 is more compact, and the structural stability is better.

As shown in fig. 5, in some embodiments of the present utility model, the diaphragm 32 is formed in a square structure, and the conductive film sheet 322 further includes a first auxiliary conductive film 3223 and a second auxiliary conductive film 3224. As shown in fig. 5, the first conductive film 3221, the second conductive film 3222, the first auxiliary conductive film 3223, and the second auxiliary conductive film 3224 may be disposed at four corners of the diaphragm 32, that is, at four corners of the body 321 of the diaphragm 32. Among them, the first auxiliary conductive film 3223 and the second auxiliary conductive film 3224 have the same outline and size as the first conductive film 3221 and the second conductive film 3222. By the arrangement, the mass distribution of the vibrating diaphragm 32 can be ensured to be uniform, and the vibrating diaphragm can be kept stable in the vibrating process. It is understood that, in order to further ensure uniformity of mass distribution of the diaphragm 32, materials of the first auxiliary conductive film 3223, the second auxiliary conductive film 3224, the first conductive film 3221 and the second conductive film 3222 are also the same.

According to some embodiments of the present utility model, the conductive film 322 and the body 321 of the diaphragm 32 may be manufactured by integral injection molding or hot press molding, so that the connection stability between the conductive film 322 and the body 321 is improved, and detachment of the conductive film 322 and the body 321 is avoided. In other embodiments, the conductive film 322 and the body 321 may be connected by an adhesive, so that the process is simple and convenient, and the processing efficiency of the diaphragm 32 can be improved. In other embodiments, the conductive film 322 may be formed by applying a conductive paste to a surface of the body 321. Specifically, the conductive film 322 may be formed by applying conductive paste to a surface of the body 321 facing the magnetic circuit 2. The conductive paste can be mixed paste formed by conductive particles such as silver powder and glue. By the arrangement, the processing efficiency of the conductive film 322 can be improved, and the electrical connection stability is higher.

According to some embodiments of the present utility model, the dome 33 may be made of an insulating material, and in other embodiments, the dome 33 includes a metal part and an insulating part disposed on the metal part, and the conductive film 322 and the metal part and the lead part and the metal part are disposed in an insulating manner through an insulating part interval. Thus, by insulating the dome 33, the occurrence of short-circuiting between the dome 33 and the conductive film 322 or the lead portion can be effectively prevented.

Specifically, in some embodiments of the present utility model, the dome 33 may be made of an insulating material. Thus, the occurrence of short circuit between the dome 33 and the conductive film 322 or the lead portion can be effectively prevented. The dome 33 may be made of an insulating material such as carbon fiber, aramid fiber, engineering plastic, etc.

In other embodiments, dome 33 may be formed from a metallic material. The dome 33 includes a metal portion and an insulating portion provided on the metal portion. Specifically, the insulating portion may include an insulating outer layer on upper and lower surfaces of the dome 33 disposed opposite to each other along the vibration direction of the vibration system 3, and an insulating inner layer disposed on the side wall and the peripheral side of the through hole 331. Thereby, the conductive film 322 and the metal part and the lead part and the metal part are arranged at intervals and insulated by the insulating part. In order to reduce the number of steps of the insulating process, the insulating process may be performed only on the portion of the dome 33 corresponding to the conductive film 322 and the side wall and the peripheral side of the through hole 331. It can be understood that the positions of the dome 33 corresponding to the conductive film 322 and the side walls and the peripheral sides of the through holes 331 may be insulated by anodic treatment or electrophoresis, so as to realize insulation between the conductive film 322 and the metal part and insulation between the lead part and the metal part through insulation parts. The occurrence of the short circuit phenomenon is avoided, and the electrical connection stability of the sound generating apparatus 100 is improved.

An electronic apparatus according to an embodiment of the second utility model includes the sound generating device 100 according to the above-described embodiment of the utility model. Alternatively, the electronic device may be a mobile phone, PAD, notebook computer, or the like.

According to the electronic equipment provided by the embodiment of the utility model, the sounding device 100 is arranged, the sounding device 100 cancels the setting of the centering support piece, the internal space is saved, the magnetic circuit system 2 can realize the maximum design, the electrical connection stability is improved, the tone quality of the electronic equipment can be effectively improved, and the miniaturized design requirement of the electronic equipment can be met.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplify the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two components. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (11)

1. A sound emitting device, comprising:

a housing;

the magnetic circuit system is arranged on the shell and is provided with a plurality of magnetic gaps, and the magnetic gaps are sequentially arranged at intervals along the circumferential direction of the magnetic circuit system;

the vibration system comprises a vibration film assembly and a voice coil assembly, wherein the vibration film assembly comprises a vibration film and a ball top, the vibration film comprises a body and a conductive diaphragm, the body and the conductive diaphragm are arranged in a stacked mode, the ball top is connected with the center of the vibration film, the voice coil assembly comprises voice coils which are arranged in one-to-one correspondence with a plurality of magnetic gaps, one end of each voice coil is connected with the vibration film assembly, and the other end of each voice coil is inserted into the corresponding magnetic gap;

the voice coil assembly is provided with a lead part, the dome is provided with a through part, and the voice coil passes through the lead part to correspondingly pass through the through part to be electrically connected with the conductive diaphragm.

2. The sound generating apparatus of claim 1, wherein a conductive adhesive is disposed between the lead portion and the conductive film.

3. The sound generating apparatus according to claim 1, wherein the housing is provided with a wire inlet terminal and a wire outlet terminal, the voice coil assembly includes a first voice coil and a second voice coil connected in series, the wire lead portion includes a first wire inlet end and a first wire outlet end provided to the first voice coil and a second wire inlet end and a second wire outlet end provided to the second voice coil, the conductive film includes a first conductive film and a second conductive film, the penetrating portion includes a first through hole and a second through hole, one end of the first conductive film is electrically connected to the wire inlet terminal, the first wire inlet end is electrically connected to the other end of the first conductive film through the first through hole, the first wire outlet end is electrically connected to one end of the second conductive film through the second through hole, and the other end of the second conductive film is electrically connected to the wire outlet terminal.

4. The sound generating apparatus according to claim 1, wherein the housing is provided with a wire inlet terminal and a wire outlet terminal, the voice coil assembly includes a first voice coil and a second voice coil connected in parallel, the wire lead portion includes a first wire inlet end and a first wire outlet end provided to the first voice coil and a second wire inlet end and a second wire outlet end provided to the second voice coil, the conductive film includes a first conductive film and a second conductive film, the penetrating portion includes a first through hole and a second through hole, one end of the first conductive film is electrically connected to the wire inlet terminal, the first wire inlet end and the second wire inlet end are electrically connected to the other end of the first conductive film through the first through hole, the first wire outlet end and the second wire outlet end are electrically connected to one end of the second conductive film through the second through hole, and the other end of the second conductive film is electrically connected to the wire outlet terminal.

5. The sound generating apparatus according to claim 3 or 4, wherein the dome is formed in a square structure, the dome includes a first straight edge and a second straight edge connected end to end, a corner is formed at a connection position of the first straight edge and the second straight edge, the first through hole and the second through hole are formed in two corners of the dome, the through hole further includes a third through hole and a fourth through hole, and the first through hole, the second through hole, the third through hole and the fourth through hole are identical in external dimension, and the third through hole and the fourth through hole are respectively formed in the other two corners of the dome.

6. The sound emitting apparatus of claim 5 wherein the first through hole is diagonally disposed from the second through hole;

or the first through hole and the second through hole are respectively positioned at two ends of the first straight edge;

or the first through hole and the second through hole are respectively positioned at two ends of the second straight edge.

7. The sound generating apparatus of claim 5, wherein the second through hole is provided with a first communication opening communicated with an outer edge of the dome, the through part diagonally arranged with the second through hole is provided with a second communication opening communicated with the outer edge of the dome, and the first communication opening is consistent with the second communication opening in external dimension.

8. The sound generating apparatus according to claim 3 or 4, wherein the diaphragm is formed in a square structure, the conductive film further comprises two auxiliary conductive films, the auxiliary conductive films are identical to the first conductive film and the second conductive film in external dimension, and the first conductive film, the second conductive film and the two auxiliary conductive films are respectively disposed at four corners of the body.

9. The sound emitting apparatus of claim 1 wherein the conductive diaphragm is integrally injection molded/hot pressed with the body;

or, the conductive membrane is connected with the body in an adhesive manner;

or, the conductive film is formed by coating conductive paste on the surface of the body.

10. The sound emitting apparatus of any one of claims 1-7, wherein the dome is comprised of an insulating material;

or, the dome comprises a metal part and an insulating part arranged on the metal part, and the conducting membrane and the metal part and the lead part and the metal part are arranged in an insulating way through the insulating part at intervals.

11. An electronic device comprising the sound emitting apparatus according to any one of claims 1 to 10.