CN213342568U

CN213342568U - Loudspeaker box and mobile terminal

Info

Publication number: CN213342568U
Application number: CN202022148905.7U
Authority: CN
Inventors: 吴军; 杨虎虎; 任圣
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-06-01
Anticipated expiration: 2030-09-25
Also published as: WO2022061983A1

Abstract

The utility model provides a speaker box and mobile terminal. The loudspeaker box comprises a box body and a sounding monomer, wherein the box body comprises a first panel, a second panel with a second sounding hole and a coaming with a first sounding hole; the sounding monomer comprises a first magnetic circuit system, a second magnetic circuit system, a magnetic connecting part, a first vibration system with a first vibrating diaphragm, a second vibration system with a second vibrating diaphragm, a basin frame with a hollow inner hole and a magnetic bowl with a connecting part and an embedded part, wherein the embedded part is provided with a concave cavity, the concave cavity is provided with a cavity opening facing to a second sound outlet hole, and the bottom of the concave cavity is provided with a first through hole; first magnetic circuit locates in the cavity, and second magnetic circuit locates between embedded portion outer wall and the hollow hole inside wall, even magnetism portion wears to establish in the first through-hole and connects first magnetic circuit and second magnetic circuit, encloses between second vibrating diaphragm and the box and closes the first preceding sound chamber that forms and second sound outlet intercommunication. The loudspeaker box has a compact structure, and has the functions of loudspeaking and receiving, good magnetic performance and acoustic performance.

Description

Loudspeaker box and mobile terminal

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electroacoustics technical field especially relates to a speaker box and mobile terminal.

[ background of the invention ]

In the era of mobile internet, smart phones have become the most common and convenient mobile terminal devices. At present, smart phones have various functions, one of which is to provide high-quality music functions, and thus speaker boxes for playing sound are widely used in smart mobile devices.

The existing loudspeaker box generally has a loudspeaker function, but does not have the functions of loudspeaker and telephone receiver at the same time, and meanwhile, the existing loudspeaker box is not compact enough in structure, so that the existing loudspeaker box is difficult to realize more light and miniaturization, or the existing loudspeaker box can cause the deterioration of magnetic performance to reduce the acoustic performance when realizing miniaturization, and finally the technical requirement of the miniaturization development trend of the intelligent mobile equipment is difficult to meet.

Therefore, there is a need to provide a new speaker box to solve the above technical problems.

[ Utility model ] content

An object of the utility model is to provide a speaker box, this speaker box have the function of raising one's voice and receiving one's voice, and have nested formula structure when realizing raising one's voice and receiving one's voice function for speaker box can also guarantee magnetic performance and acoustic performance under compact structure's prerequisite, can satisfy the demand of the miniaturized development of mobile terminal well.

The technical scheme of the utility model as follows:

a loudspeaker box comprises a box body with a containing cavity and a sounding monomer arranged in the containing cavity, wherein the box body comprises a first panel, a second panel arranged opposite to the first panel and a coaming connected between the first panel and the second panel; a first sound outlet hole is formed in the second panel in a penetrating mode, and a second sound outlet hole is formed in the enclosing plate in a penetrating mode;

the sounding unit comprises a basin frame, a magnetic bowl, a first vibration system, a second vibration system, a first magnetic circuit system for driving the first vibration system to sound, a second magnetic circuit system for driving the second vibration system to sound and a magnetic connecting part connected with the first magnetic circuit system and the second magnetic circuit system;

the basin stand is connected with the box body and is provided with a hollow inner hole;

the magnetic bowl comprises a connecting part connected with one end of the basin frame and an embedded part extending from the connecting part and penetrating through the hollow inner hole;

the embedded part is provided with a concave cavity, the concave cavity is provided with a cavity opening facing the first sound outlet hole, and a first through hole penetrates through the bottom of the concave cavity;

the first magnetic circuit system is arranged in the cavity, the second magnetic circuit system is arranged between the outer wall of the embedded part and the inner side wall of the hollow inner hole, the magnetic connecting part is arranged in the first through hole in a penetrating mode, two ends of the magnetic connecting part are respectively connected with the first magnetic circuit system and the second magnetic circuit system, the first magnetic circuit system is provided with a first magnetic gap located in the cavity, and the second magnetic circuit system is provided with a second magnetic gap located outside the cavity and in the hollow inner hole;

the first vibration system comprises a first vibrating diaphragm connected with the magnetic bowl and a first voice coil, one end of the first voice coil is inserted into the first magnetic gap, and the first voice coil is used for driving the first vibrating diaphragm to sound;

the second vibration system comprises a second vibrating diaphragm and a second voice coil, wherein the second vibrating diaphragm is connected with the other end of the basin frame, one end of the second vibrating diaphragm is inserted into the second magnetic gap and is used for driving the second vibrating diaphragm to produce sound, and the second vibrating diaphragm and the box body are enclosed to form a first front sound cavity communicated with the second sound outlet.

Preferably, the embedded portion includes a first transverse plate disposed opposite to the first sound outlet at an interval and an annular longitudinal plate extending from an edge of the first transverse plate toward the first diaphragm, the first transverse plate is provided with the first through hole in a penetrating manner, and the first transverse plate and the annular longitudinal plate enclose to form the cavity;

the connecting part is a second transverse plate, and the second transverse plate extends from the end part of the annular longitudinal plate far away from the first transverse plate to the direction far away from the cavity opening.

Preferably, the first magnetic circuit system comprises a first main magnetic steel, a first auxiliary magnetic steel, a first main pole core and a first auxiliary pole core;

the second magnetic circuit system comprises a second main magnetic steel, a second auxiliary magnetic steel, a second main pole core and a second auxiliary pole core;

the first main magnetic steel and the second main magnetic steel are respectively overlapped at two opposite sides of the magnetic connecting part, and the first main magnetic steel, the magnetic connecting part and the second main magnetic steel are integrally formed;

the first auxiliary magnetic steel is overlapped on the surface of the first transverse plate, which is positioned in the concave cavity, and the first auxiliary magnetic steel is arranged at the periphery of the first main magnetic steel at intervals and forms the first magnetic gap with the first main magnetic steel in a surrounding manner;

the first main pole core is stacked on the surface of the first main magnetic steel facing the first diaphragm;

the first auxiliary pole core is stacked on the surface of the first auxiliary magnetic steel, which faces the first diaphragm;

the second auxiliary magnetic steel is overlapped on the surface of the second transverse plate facing the second diaphragm and forms a second magnetic gap with the second main magnetic steel in a surrounding manner;

the second main pole core is stacked on the surface of the second main magnetic steel facing the second diaphragm;

the second auxiliary pole core is arranged on the surface of the second auxiliary magnetic steel facing the second diaphragm in a stacked mode.

Preferably, the basin frame is provided with a groove for communicating the accommodating cavity with the hollow inner hole; and the first transverse plate and/or the annular longitudinal plate are/is provided with a second through hole for communicating the hollow inner hole with the concave cavity.

Preferably, the frame comprises a hollow frame body, two first extension arms and two second extension arms;

the two first extension arms and the two second extension arms extend from the hollow frame body towards the second transverse plate and are connected with the second transverse plate, the two first extension arms are oppositely arranged, the two second extension arms are oppositely arranged, and the adjacent first extension arms and the second extension arms surround to form the groove;

the first transverse plate and/or the annular longitudinal plate are/is provided with four second through holes; and/or the presence of a gas in the gas,

the first auxiliary pole core is provided with a notch communicated with the second through hole; the second main magnetic steel is provided with a first avoidance port communicated with the second through hole; and a second avoidance port communicated with the first avoidance port is arranged on the second main pole core.

Preferably, the box body further includes an annular support platform extending from the first panel and protruding into the accommodating cavity, the connecting portion and the annular support platform are arranged at an interval, the second vibration system and the second magnetic circuit system are arranged between the annular support platform and the connecting portion, and the second diaphragm, the annular support platform and the first panel enclose to form the first front acoustic cavity; the annular supporting table is provided with an opening for communicating the first front sound cavity with the second sound outlet hole.

Preferably, a distance is provided between the outer side of the annular support platform and the inner side of the enclosing plate, the box body further comprises a sound guide channel, the sound guide channel extends from a portion of the annular support platform, where the opening is provided, to a portion of the enclosing plate, where the second sound outlet is provided, and the sound guide channel is provided with a communication hole for communicating the opening and the second sound outlet in a penetrating manner.

Preferably, the annular support platform comprises an annular support part protruding from the first panel and a limit part protruding from the annular support part toward the connection part, the second diaphragm is clamped on the annular support part, and the frame is connected to a surface of the second diaphragm facing away from the annular support part; the limiting part is abutted against the end part of the second vibrating diaphragm and abutted against the outer wall of the basin frame close to the second vibrating diaphragm.

A second object of the utility model is to provide a mobile terminal, including speaker box and terminal panel, the speaker box is above-mentioned the speaker box, the second panel laminating in on the terminal panel, the terminal panel is equipped with the third phonate hole, the third phonate hole with first phonate hole link up.

Preferably, a sealing member for sealing the end panel and the second panel is further provided between the end panel and the second panel.

The beneficial effects of the utility model reside in that:

compared with the prior art, the utility model provides a loudspeaker box, through set up first phonate hole, bounding wall at the second panel of box and set up the second phonate hole, be provided with respectively in the box with first phonate hole complex first vibration system and drive the first magnetic circuit of first vibration system sound production, with second phonate hole complex second vibration system and drive the second magnetic circuit of second vibration system sound production simultaneously, make loudspeaker box realize the sound production in two directions, and have the function of raising one's voice and receiving one's voice; meanwhile, the first vibration system and the first magnetic circuit system are arranged in the concave cavity of the magnetic bowl with the concave cavity structure, the second vibration system and the second magnetic circuit system are arranged outside the concave cavity of the magnetic bowl, and the two parts of sound production system systems are nested, so that the structural compactness of the loudspeaker box is improved, and the loudspeaker box is miniaturized; in addition, through wearing to locate even magnetism portion in the first through-hole with first magnetic circuit with second magnetic circuit intercommunication, this makes when the speaker box is miniaturized, and the thickness of magnet steel does not reduce, guarantees the magnetic property of speaker box, and then has excellent acoustic performance.

The utility model provides a mobile terminal, owing to including foretell speaker box, consequently mobile terminal has the function of raising one's voice and receiving one's voice, has excellent acoustic performance simultaneously, in addition, because foretell speaker box has nested structure, its space that occupies mobile terminal is smaller for mobile terminal can miniaturize.

[ description of the drawings ]

Fig. 1 is a schematic perspective view of a speaker box according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of A-A of FIG. 1;

FIG. 3 is a schematic cross-sectional view of B-B of FIG. 1;

FIG. 4 is an exploded view of FIG. 1;

FIG. 5 is a schematic perspective view of the speaker box of FIG. 1 with the box body removed;

FIG. 6 is a schematic cross-sectional view of C-C of FIG. 5;

FIG. 7 is a schematic perspective view of the case with the second panel removed;

FIG. 8 is a schematic perspective view of a magnetic bowl;

FIG. 9 is a perspective view of the basin stand;

FIG. 10 is a schematic perspective view of the integrally formed first main magnetic steel, the connecting magnetic part and the second main magnetic steel;

fig. 11 is a schematic perspective view of a second main pole core;

fig. 12 is a perspective view of the mobile terminal;

FIG. 13 is a schematic cross-sectional view taken at D-D in FIG. 12;

the reference numbers illustrate:

100. a speaker box; 100a, a containing cavity; 100b, a first front acoustic cavity; 100c, a second front acoustic cavity;

10. a box body; 101. a first panel; 102. a second panel; 1021. a first sound outlet; 103. enclosing plates; 1031. a second sound outlet; 104. an annular support table; 1041. an opening; 1042. an annular support portion; 1043. a limiting part; 105. a sound guide channel; 1051. a communicating hole;

200. a sounding monomer;

20. a basin stand;

201. a hollow inner bore; 202. a groove; 203. a hollow frame body; 204. a first extension arm; 205. a second extension arm;

30. a magnetic bowl;

301. a connecting portion; 302. an embedded portion; 3021. a concave cavity; 3022. a lumen port; 3023. a first through hole; 3024. a first transverse plate; 3025. an annular longitudinal plate; 3026. a second through hole;

40. a first vibration system;

401. a first diaphragm; 402. a first voice coil; 403. a first dome;

50. a second vibration system;

501. a second diaphragm; 502. a second voice coil; 503. a second dome;

60. a first magnetic circuit system;

601. a first magnetic gap; 602. a first main magnetic steel; 603. a first secondary magnetic steel; 604. a first main pole core; 605. a first auxiliary pole core; 6051. a notch;

70. a second magnetic circuit system;

701. a second magnetic gap; 702. a second main magnetic steel; 7021. a first avoidance port; 703. a second pair of magnetic steels; 704. a second main pole core; 7041. a second avoidance port; 705. a second auxiliary pole core;

80. a magnetism connecting part;

900. a mobile terminal;

901. a terminal panel; 901a, a third sound outlet; 902. and a seal.

[ detailed description ] embodiments

The present invention will be further described with reference to the accompanying drawings and embodiments. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture, if the specific posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1 to 11, the embodiment of the present invention provides a speaker box 100, including box 10, sound generating unit 200, box 10 has and holds chamber 100a, and sound generating unit 200 sets up in holding chamber 100a, and wherein, sound generating unit 200 includes basin frame 20, magnetic bowl 30, first vibration system 40, second vibration system 50, first magnetic circuit 60, second magnetic circuit 70 and even magnetism portion 80.

Specifically, the box 10 includes a first panel 101, a second panel 102, and a surrounding plate 103, wherein the first panel 101 and the second panel 102 are disposed opposite to each other, the surrounding plate 103 connects the first panel 101 and the second panel 102, and the first panel 101, the surrounding plate 103, and the second panel 102 surround and form an accommodating cavity 100 a. The second panel 102 is provided with a first sound outlet 1021 in a penetrating manner, the enclosing plate 103 is provided with a second sound outlet 1031 in a penetrating manner, and the enclosing plate 103 is connected between the first panel 101 and the second panel 102, so that the first sound outlet 1021 and the second sound outlet 1031 face two different directions, and the loudspeaker box 100 can make sound from different directions conveniently.

The basin stand 20 is connected with the box body 10, and the basin stand 20 is provided with a hollow inner hole 201.

The magnetic bowl 30 comprises a connecting portion 301 and an embedded portion 302, wherein the connecting portion 301 is connected with one end of the basin stand 20, and the embedded portion 302 extends from the connecting portion 301 to penetrate through the hollow inner hole 201. The recessed portion 302 has a cavity 3021, and the cavity 3021 has a port 3022 facing the first sound outlet 1021, and a first through hole 3023 is formed through the bottom of the cavity 3021.

The first magnetic circuit system 60 is disposed in the cavity 3021, the first magnetic circuit system 60 has a first magnetic gap 601, and the first magnetic circuit system 60 is used for driving the first vibration system 40 to generate sound.

The first vibration system 40 includes a first diaphragm 401 and a first voice coil 402; wherein, the first diaphragm 401 is connected with the magnetic bowl 30; one end of the first voice coil 402 is inserted into the first magnetic gap 601, the other end of the first voice coil 402 is connected with the first diaphragm 401, and the first voice coil 402 can drive the first diaphragm 401 to generate sound after being powered on.

The second magnetic circuit system 70 is disposed between the outer wall of the embedded portion 302 and the inner side wall of the hollow inner hole 201, the second magnetic circuit system 70 has a second magnetic gap 701, and the second magnetic circuit system 70 is used for driving the second vibration system 50 to generate sound.

The second vibration system 50 includes a second diaphragm 501 and a second voice coil 502; wherein, the second diaphragm 501 is connected with the other end of the basin stand 20; one end of the second voice coil 502 is inserted into the second magnetic gap 701, and the other end is connected to the second diaphragm 501, and the second voice coil 502 can drive the second diaphragm 501 to generate sound after being powered on. The second diaphragm 501 and the case 10 enclose a first front sound chamber 100b, and the first front sound chamber 100b is communicated with the second sound outlet 1031.

The magnetic connecting portion 80 is inserted into the first through hole 3023, one end of the magnetic connecting portion is connected to the first magnetic circuit system 60, the other end of the magnetic connecting portion is connected to the second magnetic circuit system 70, and the first magnetic circuit system 60 and the second magnetic circuit system 70 are communicated through the magnetic connecting portion 80.

On one hand, the speaker box 100 of the embodiment of the present invention is provided with the first sound outlet 1021 on the second panel 102 of the box body 10 and the second sound outlet 1031 on the enclosing plate 103, so that the first sound outlet 1021 and the second sound outlet 1031 face different directions, and the speaker box 100 realizes sound emission in different directions; on the other hand, the first vibration system 40 and the first magnetic circuit system 60 for driving the first vibration system 40 to generate sound are installed in the cavity 3021 of the magnetic bowl 30 through the magnetic bowl 30, and the second vibration system 50 and the second magnetic circuit system 70 for driving the second vibration system 50 to generate sound are installed between the outer wall of the cavity 3021 and the inner wall of the hollow inner hole 201 of the frame 20, so that the first vibration system 40, the first magnetic circuit system 60, the second vibration system 50 and the second magnetic circuit system 70 are nested, the structural compactness of the speaker box 100 is improved, the speaker box 100 can be miniaturized, and the sound generated by the first vibration system 40 driven by the first magnetic circuit system 60 is transmitted from the first sound outlet 1021, while the sound generated by the second vibration system 50 driven by the second magnetic circuit system 70 is transmitted to the second sound outlet 1031 through the first front sound cavity 100a and is transmitted from the second sound outlet 1031, the loudspeaker box 100 can realize sound production in two directions, and the loudspeaker box 100 has the functions of sound production and sound receiving; on the other hand, since the magnetic connecting portion 80 is disposed between the first magnetic circuit 60 and the second magnetic circuit 70, the thickness of the magnetic is not reduced when the speaker box 100 is miniaturized, and the speaker box 100 still has good magnetic performance, so that the miniaturized speaker box 100 has excellent acoustic performance.

Referring to fig. 1 to 4 and 7, the box 10 includes a ring support platform 104, the ring support platform 104 extends from the first panel 101 and is protruded into the accommodating cavity 100a, and the ring support platform 104 and the connecting portion 301 are disposed opposite to each other at an interval. The second vibration system 50 and the second magnetic circuit system 70 are arranged between the annular support platform 104 and the connecting portion 301, and the second diaphragm 501, the annular support platform 104 and the first panel 101 enclose to form a first front acoustic cavity 100 b; the annular support platform 104 is provided with an opening 1041, and the opening 1041 is used for communicating the first front sound chamber 100b and the second sound outlet 1031, so that the sound generated by the second diaphragm 501 can be transmitted from the first front sound chamber 100b to the second sound outlet 1031 and transmitted to the outside through the second sound outlet 1031.

In a specific application, the annular support platform 104 has a distance between the outer side thereof and the inner side of the surrounding plate 103, the housing 10 further comprises a sound guiding channel 105, the sound guiding channel 105 extends from a portion of the annular support platform 104 where the opening 1041 is provided to a portion of the surrounding plate 103 where the second sound outlet 1031 is provided, and the sound guiding channel 105 is provided with a communication hole 1051, the communication hole 1051 penetrates through the sound guiding channel 105 to communicate the opening 1041 with the first sound outlet 1021, so that the sound generated by the second diaphragm 501 is transmitted from the first front sound chamber 100b to the second sound outlet 1031 via the communication hole 1051, and finally transmitted to the outside.

Preferably, the annular support platform 104 includes an annular support portion 1042 and a limiting portion 1043, wherein the annular support portion 1042 is protruded on the first panel 101, and the limiting portion 1043 extends from an end surface of the annular support portion 1042 far away from the first panel 101 toward the connection portion 301. Specifically, the limiting portion 1043 is convexly disposed at the end of the annular supporting portion 1042 close to the outer wall of the annular supporting portion 1042, so as to limit the second diaphragm 501 and the frame 20, the second diaphragm 501 is clamped and fixed on the annular supporting portion 1042, one end of the frame 20 is abutted against the back of the contact surface of the second diaphragm 501 and the annular supporting portion 1042, thereby fixing the second diaphragm 501 by the frame 20 and the annular supporting portion 1042, the limiting portion 1043 is abutted against the end of the second diaphragm 501, meanwhile, the limiting portion 1043 is also abutted against the outer wall of the frame 20 close to the second diaphragm 501, the limiting portion 1043 can effectively limit the movement of the second diaphragm 501 in the non-vibration direction, meanwhile, the limiting portion 1043 can also effectively limit the frame 20, so as to improve the firmness of the installation of the second diaphragm 501 and the frame 20, and further improve the firmness of the whole speaker box 100.

In this embodiment, the ring mount 104, the sound guide channel 105 and the first panel 101 are integrally formed. Of course, as an alternative embodiment, the annular support platform 104 and the sound guide channel 105 may be fixedly formed with the first panel 101 by welding, and the space between the annular support platform 104 and the sound guide channel 105 and the space between the sound guide channel 105 and the surrounding panel 103 may be fixedly formed by welding, but not limited to these two ways.

Referring to fig. 1 to 4 and 8, the embedded portion 302 of the magnetic bowl 30 includes a first transverse plate 3024 and an annular longitudinal plate 3025, wherein the first transverse plate 3024 is disposed opposite to the first sound outlet 1021, and the annular longitudinal plate 3025 extends from an edge of the first transverse plate 3024 toward the first diaphragm 401, so that a cavity 3021 is defined by the first transverse plate 3024 and the annular longitudinal plate 3025.

The connecting portion 301 of the magnetic bowl 30 is a second transverse plate extending from the end of the annular longitudinal plate 3025 away from the first transverse plate 3024 in a direction away from the cavity port 3022, and the second transverse plate is connected to the other end of the basin stand 20. Preferably, the end of the second transverse plate far from the cavity 3021 is connected to the inner sidewall of the first sound outlet 1021, and the first diaphragm 401 is clamped on the surface of the second transverse plate facing the first sound outlet 1021.

In this embodiment, a first accommodating space (not shown) for installing the first magnetic circuit system 60 is enclosed by the first diaphragm 401 and the cavity 3021, and a second accommodating space (not shown) for installing the second magnetic circuit system 70 is enclosed by the second diaphragm 501, the frame 20, the first transverse plate 3024, the annular longitudinal plate 3025, and the second transverse plate, so that the first vibration system 40, the first magnetic circuit system 60, the second vibration system 50, and the second magnetic circuit system 70 form a nested structure, thereby improving the structural compactness of the speaker box 100.

Referring to fig. 1 to 4 and 9, the basin frame 20 is provided with a groove 202, the groove 202 is used for communicating the accommodating cavity 100a with the hollow inner hole 201, and the design of the groove 202 is beneficial to air circulation in the accommodating cavity 100a and the hollow inner hole 201 (i.e. the second accommodating space), so as to adjust air pressure in the accommodating cavity 100a and air pressure in the hollow inner hole 201 and accelerate heat dissipation speed of the sound generating unit 200, thereby improving acoustic performance of the speaker box 100. The first transverse plate 3024 or the annular longitudinal plate 3025 is provided with a second through hole 3026, or a portion where the first transverse plate 3024 and the annular longitudinal plate 3025 are connected to each other is provided with a second through hole 3026, the second through hole 3026 is used for communicating the hollow inner hole 201 and the cavity 3021, and the second through hole 3026 is designed to facilitate the air inside the cavity 3021 (i.e., the first accommodating space) to circulate through the air inside the hollow inner hole 201, so as to adjust the air pressure inside the cavity 3021 and the air pressure inside the hollow inner hole 201, and facilitate the air inside the cavity 3021 (i.e., the first accommodating space) to circulate through the air inside the accommodating cavity 100 a. The design of the groove 202 and the second through hole 3026 allows the accommodating cavity 100a of the cabinet 10, the hollow inner hole 201, and the cavity 3021 of the magnetic bowl 30 to be communicated with each other, which is beneficial to the air communication among the accommodating cavity 100a, the first accommodating space, and the second accommodating space, and the air pressure in the accommodating cavity 100a, the first accommodating space, and the second accommodating space is adjusted, thereby improving the acoustic performance of the speaker box 100.

In a specific application, the basin frame 20 includes a hollow frame 203, two first extension arms 204, and two second extension arms 205, wherein the two first extension arms 204 extend from the hollow frame 203 toward the second transversal plate and are connected to the second transversal plate, the two first extension arms 204 are disposed oppositely, the two second extension arms 205 extend from the hollow frame 203 toward the second transversal plate and are connected to the second transversal plate, the two second extension arms 205 are disposed oppositely, the adjacent first extension arms 204 and second extension arms 205 enclose the groove 202, and correspondingly, four second through holes 3026 are disposed on the first transversal plate 3024 and/or the annular longitudinal plate 3025. The four recesses 202 thus formed communicate the accommodation chamber 100a with the hollow bore 201, and the four second through holes 3026 communicate the hollow bore 201 with the cavity 3021, so that the rapid adjustment of the air pressure is facilitated, and the acoustic performance of the speaker box 100 can be further improved. Of course, as an alternative embodiment, the number of the first extension arms 204 and the second extension arms 205 is not limited to two, but may be other numbers, the number of the grooves 202 is not limited to one or four, but may be two, three or other numbers, and correspondingly, the number of the second through holes 3026 is not limited to one or four, but may be two, three or other numbers.

Referring to fig. 1 to 4 and 10, the first magnetic circuit system 60 includes a first main magnetic steel 602, a first auxiliary magnetic steel 603, a first main pole core 604 and a first auxiliary pole core 605; the first main magnetic steel 602 is stacked on the surface of the magnetic connecting part 80 facing the cavity 3021; the first secondary magnetic steel 603 is stacked on the surface of the first transverse plate 3024 in the cavity 3021, and the first secondary magnetic steel 603 is disposed at an interval on the periphery of the first primary magnetic steel 602 and surrounds the first primary magnetic steel 602 to form a first magnetic gap 601; a first main pole core 604 is stacked on the surface of the first main magnetic steel 602 facing the first diaphragm 401; the first auxiliary pole core 605 is stacked on the surface of the first auxiliary magnetic steel 603 facing the first diaphragm 401.

In specific application, the first auxiliary magnetic steel 603 is overlapped on the position of the first transverse plate 3024, which avoids the second through hole 3026; the first secondary pole core 605 is a block, and a notch 6051 communicated with the second through hole 3026 is formed in the first secondary pole core to facilitate gas circulation.

Preferably, the first sub-magnetic steels 603 include four, two first sub-magnetic steels 603 are respectively disposed at one opposite end of the first main magnetic steel 602, the other two first sub-magnetic steels 603 are respectively disposed at the other opposite end of the first main magnetic steel 602, and the four first sub-magnetic steels 603 are respectively stacked on the first transverse plate 3024 avoiding the second through hole 3026, so as to facilitate the gas circulation. Of course, as an alternative embodiment, the first secondary magnetic steel 603 is not limited to four, and may be in other number, or the first secondary magnetic steel 603 has a hollow annular structure, and when the first secondary magnetic steel 603 has a hollow annular structure, an air vent communicated with the second through hole 3026 is provided thereon.

Preferably, the first main magnetic steel 602 and the magnetic connecting part 80 are integrally formed. Of course, as an alternative embodiment, the first main magnetic steel 602 and the magnetic connecting portion 80 are not limited to be integrally formed, and may be connected together by welding, or may be connected by other methods. In addition, the first main magnetic steel 602 and the magnetic connecting portion 80 are made of a magnetic material, such as a permanent magnet.

In this embodiment, the first magnetic circuit system 60 and the first vibration system 40 form a sound generating system, and the first magnetic circuit system 60 drives the first vibration system 40 to generate sound, and the generated sound is transmitted through the first sound hole 1021. Since the first magnetic circuit system 60 is disposed in the cavity 3021, the space occupied by the first magnetic circuit system 60 in the speaker box 100 can be reduced, and the compactness of the speaker box 100 can be improved.

Referring to fig. 1 to 4, 10 and 11, the second magnetic circuit system 70 includes a second main magnetic steel 702, a second auxiliary magnetic steel 703, a second main pole core 704 and a second auxiliary pole core 705; the second main magnetic steel 702 is stacked on the surface of the magnetic connecting part 80 away from the cavity 3021, and the second sub magnetic steel 703 is stacked on the connecting part 301 (i.e. the surface of the second transverse plate facing the second diaphragm 501) and encloses with the second main magnetic steel 702 to form a second magnetic gap 701; a second main pole core 704 is superposed on the surface of the second main magnetic steel 702 facing the second diaphragm 501; the second auxiliary pole core 705 is stacked on the surface of the second auxiliary magnetic steel 703 facing the second diaphragm 501.

In specific application, the second main magnetic steel 702 is provided with a first avoidance port 7021, the second main magnetic steel 702 is stacked on the surface of the magnetic connecting part 80 departing from the cavity 3021 and extends to be stacked on the part of the first transverse plate 3024 avoiding the second through hole 3026, and the first avoidance port 7021 and the second through hole 3026 are communicated with each other to facilitate air circulation; the second main pole piece 704 is provided with a second avoidance port 7041, the second avoidance port 7041 is communicated with the first avoidance port 7021 to facilitate air circulation, and the second main pole piece 704 is stacked on the surface of the second main pole piece 702 facing the second diaphragm 501 and avoids the first avoidance port 7021, so that the second through hole 3026, the first avoidance port 7021 and the second avoidance port 7041 are communicated to facilitate air circulation.

Preferably, the second secondary magnetic steels 703 include four secondary magnetic steels 703, two of the secondary magnetic steels 703 are respectively disposed at one opposite end of the second main magnetic steel 702 and connected to the connection portion 301 (i.e., the second transverse plate), and the other two secondary magnetic steels 703 are respectively disposed at the other opposite end of the second main magnetic steel 702 and connected to the connection portion 301 (i.e., the second transverse plate). Of course, as an alternative embodiment, the second auxiliary magnetic steel 703 is not limited to four, and may be in other numbers, or the second auxiliary magnetic steel 703 has a hollow annular structure, and when the second auxiliary magnetic steel 703 has a hollow annular structure, a gas-guiding hole communicated with the second through hole 3026 is provided thereon, so as to facilitate the gas circulation. The second auxiliary pole core 705 is a block and has a hollow structure, a gap is formed between the second auxiliary pole core 705 and the second voice coil 502 at the periphery of the second voice coil 502 at intervals, and meanwhile, the second auxiliary pole core 705 is connected with the second auxiliary magnetic steel 703.

Preferably, the second main magnet steel 702 and the magnetic connecting part 80 are integrally formed. Of course, as an alternative embodiment, the second main magnetic steel 702 and the magnetic connecting portion 80 are not limited to be integrally formed, and may be connected together by welding, or may be connected by other methods. In addition, the second main magnetic steel 702 and the magnetic connecting portion 80 are made of a magnetic material, such as a permanent magnet.

In this embodiment, the second magnetic circuit system 70 and the second vibration system 50 form another sound generating system, and the second magnetic circuit system 70 drives the second vibration system 50 to generate sound, and the generated sound is transmitted through the first sound hole 1021. The second magnetic circuit system 70 is disposed between the outside of the cavity 3021 and the inner side wall of the hollow inner hole 201 of the frame 20, and particularly the second secondary magnetic steel 703 is disposed on the connecting portion 301 (and the surface of the second transverse plate facing the second diaphragm 501), which also reduces the space occupied by the second magnetic circuit system 70 in the speaker box 100 and improves the structural compactness of the speaker box 100.

In a preferred embodiment, the first main magnet 602, the magnetic connecting portion 80 and the second main magnet 702 are integrally formed.

Referring to fig. 1 to 6, the first vibration system 40 further includes a first dome 403, the first dome 403 is stacked on a surface of the first diaphragm 401 facing the first magnetic circuit system 60 and is connected to the other end of the first voice coil 402, and the arrangement of the first dome 403 is beneficial to improving the acoustic performance of the first vibration system 40.

The second vibration system 50 further includes a second dome 503, the second dome 503 is stacked on the surface of the second diaphragm 501 facing the second magnetic circuit system 70 and is connected to the other end of the second voice coil 502, and the arrangement of the second dome 503 is beneficial to improving the acoustic performance of the second vibration system 50.

The embodiment of the utility model provides a still provide a mobile terminal 900. Referring to fig. 1 to 4 and 12 to 13, the mobile terminal 900 includes a terminal panel 901 and a speaker box 100 mounted on the terminal panel 901. The speaker box 100 is the above speaker box 100, the second panel 102 on the speaker box 100 is attached to the terminal panel 901, the terminal panel 901 is provided with a third sound outlet 901a, and the third sound outlet 901a is communicated with the first sound outlet 1021. In the mobile terminal 900, the second diaphragm 501, the second panel 102 and the terminal panel 901 in the speaker box 100 enclose to form a second front acoustic cavity 100 c.

Preferably, the mobile terminal 900 further includes a sealing member 902, the sealing member 902 is used for sealing the terminal panel 901 and the second panel 102, and the sealing member 902 may be a ring-shaped sealing member, which is stacked between the terminal panel 901 and the second panel 102 and surrounds the outer periphery of the first sound outlet 1021. In some embodiments, the sealing member 902 is foam, however, the sealing member 902 is not limited to foam, and may be other components having sealing effect.

The embodiment of the present invention provides a mobile terminal 900, since the speaker box 100 is the speaker box 100 described above, that is, the first sound outlet 1021 is provided on the second panel 102 of the box body 10 of the speaker box 100, the first sound outlet 1021 is used for receiving sound, and the second sound outlet 1031 is provided on the enclosure 103, and the second sound outlet 1031 is used for outputting sound, so that the mobile terminal 900 has sound outputting and receiving functions, furthermore, since the first vibration system 40 and the first magnetic circuit system 60 of the speaker box 100 are disposed in the cavity 3021 of the magnetic bowl 30 having the cavity 3021 structure, and the second vibration system 50 and the second magnetic circuit system 70 are disposed outside the cavity 3021 of the magnetic bowl 30, the sound generating system formed by the first vibration system 40 and the first magnetic circuit system 60 and the sound generating system formed by the second vibration system 50 and the second magnetic circuit system 70 are nested, thereby improving the structural compactness of the speaker box 100, the speaker box 100 occupies a relatively small space of the mobile terminal 900, so that the mobile terminal 900 can be miniaturized, and in addition, since the first main magnetic steel 602 of the first magnetic circuit system 60 and the second main magnetic steel 702 of the second magnetic circuit system 70 are connected through the magnetic connecting part 80, the speaker box 100 has good magnetic performance and finally shows good acoustic performance, and the mobile terminal 900 also has good acoustic performance while being miniaturized.

The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims

1. A loudspeaker box comprises a box body with a containing cavity and a sounding monomer arranged in the containing cavity, and is characterized in that the box body comprises a first panel, a second panel arranged opposite to the first panel and a coaming connected between the first panel and the second panel; a first sound outlet hole is formed in the second panel in a penetrating mode, and a second sound outlet hole is formed in the enclosing plate in a penetrating mode;

2. The loudspeaker box of claim 1, wherein the embedded portion comprises a first transverse plate disposed opposite to the first sound outlet and an annular longitudinal plate extending from an edge of the first transverse plate toward the first diaphragm, the first transverse plate has the first through hole formed therethrough, and the first transverse plate and the annular longitudinal plate enclose the cavity;

3. A loudspeaker enclosure according to claim 2, wherein the first magnetic circuit system comprises a first main magnetic steel, a first auxiliary magnetic steel, a first main pole core, a first auxiliary pole core;

4. The loudspeaker box of claim 3, wherein the frame defines a recess for communicating the accommodating cavity with the hollow inner bore; and the first transverse plate and/or the annular longitudinal plate are/is provided with a second through hole for communicating the hollow inner hole with the concave cavity.

5. The loudspeaker cabinet of claim 4, wherein the frame includes a hollow frame, two first extension arms, and two second extension arms;

6. The loudspeaker box according to claim 1 or 2, wherein the box body further comprises a ring support platform extending from the first panel and protruding into the accommodating cavity, the connecting part is arranged opposite to the ring support platform at a distance, the second vibration system and the second magnetic circuit system are arranged between the ring support platform and the connecting part, and the second diaphragm, the ring support platform and the first panel enclose to form the first front sound cavity; the annular supporting table is provided with an opening for communicating the first front sound cavity with the second sound outlet hole.

7. A loudspeaker enclosure according to claim 6, wherein the annular support platform is spaced from the inside of the enclosure, the enclosure further comprising a sound guide channel extending from the portion of the annular support platform in which the opening is provided to the portion of the enclosure in which the second sound outlet is provided, the sound guide channel having a communication hole therethrough for communicating the opening with the second sound outlet.

8. The loudspeaker box of claim 7, wherein the annular support platform comprises an annular support portion protruding from the first panel and a limit portion protruding from the annular support portion toward the connection portion, the second diaphragm is clamped on the annular support portion, and the frame is connected to a surface of the second diaphragm facing away from the annular support portion; the limiting part is abutted against the end part of the second vibrating diaphragm and abutted against the outer wall of the basin frame close to the second vibrating diaphragm.

9. A mobile terminal, comprising a speaker box and a terminal panel, wherein the speaker box is the speaker box of any one of claims 1 to 8, the second panel is attached to the terminal panel, and the terminal panel is provided with a third sound outlet hole, and the third sound outlet hole is communicated with the first sound outlet hole.

10. The mobile terminal of claim 9, wherein a seal is further disposed between the end panel and the second panel for sealing the end panel to the second panel.