WO2022061985A1

WO2022061985A1 - Loudspeaker enclosure and mobile terminal

Info

Publication number: WO2022061985A1
Application number: PCT/CN2020/120989
Authority: WO
Inventors: 吴军; 杨虎虎; 任圣
Original assignee: 瑞声声学科技(深圳)有限公司; 瑞声科技(新加坡)有限公司
Priority date: 2020-09-25
Filing date: 2020-10-14
Publication date: 2022-03-31
Also published as: CN213342569U

Abstract

The present application provides a loudspeaker enclosure and a mobile terminal. The loudspeaker enclosure comprises a housing and a sound production unit, wherein the housing is provided with a first sound outlet hole and a second sound outlet hole that are located on different sides of the loudspeaker enclosure; and the sound production unit comprises a first sound production assembly for producing sound directed towards the first sound outlet hole, a second sound production assembly for producing sound directed towards the second sound outlet hole, and a magnetic bowl having a through hole, wherein the magnetic bowl comprises a first surface and a second surface that are oppositely arranged; the through hole penetrates and extends from the first surface to the second surface; the first sound production assembly comprises a first vibration system and a first magnetic circuit system having a first magnetic gap; the second sound production assembly comprises a second vibration system and a second magnetic circuit system having a second magnetic gap; the first magnetic circuit system is installed on the first surface; the second magnetic circuit system is installed on the second surface; and the first magnetic gap and the second magnetic gap are in communication by means of the through hole to form a magnetic channel. The loudspeaker enclosure provided in the present application has a loudspeaker function and a receiver function.

Description

Speaker box and mobile terminal

technical field

The present application relates to the technical field of acoustics and electricity, and in particular, to a speaker box and a mobile terminal.

Background technique

At present, speaker boxes for playing sound are widely used in smart mobile terminals. For some mobile terminal devices (such as mobile phones), it is necessary to configure both a speaker box for external sound and a receiver for non-external sound. It is beneficial to the development of thin and light intelligent mobile terminals.

Therefore, it is necessary to provide a speaker box that integrates external sound and non-external sound.

technical problem

One of the objectives of the present application is to provide a speaker box to solve the technical problem that the existing speaker box is only used for external sound or the function of a receiver.

technical solutions

One of the technical solutions provided by the purpose of this application is as follows: a speaker box, comprising a housing provided with a accommodating space and a sound-emitting unit accommodated in the accommodating space, the housing is provided with a first sound output A hole and a second sound hole, the first sound hole and the second sound hole are located on different sides of the speaker box; A first sound-generating component, a second sound-generating component for sounding toward the second sound-emitting hole, and a magnetic bowl with a perforation, the magnetic bowl including a first surface and a second surface disposed oppositely, the perforation extending from the The first surface extends through the second surface; the first sound-generating component includes a first vibration system and a first magnetic circuit system for driving the first vibration system to vibrate and sound, the first magnetic circuit system having a first magnetic gap, the second sound-generating component includes a second vibration system and a second magnetic circuit system for driving the second vibration system to vibrate and sound, the second magnetic circuit system has a second magnetic gap, the The first magnetic circuit system is mounted on the first surface, the second magnetic circuit system is mounted on the second surface, and the first magnetic gap communicates with the second magnetic gap through the through hole to form a magnetic channel.

Further, the housing includes a first end panel, a second end panel disposed opposite to the first end panel, and an edge connected to the first end panel and the second end panel A shroud between the edges of the panels, one of the first sound outlet hole and the second sound outlet hole is arranged through the shroud plate, and the other is arranged through the first end panel or on the second end panel, the magnetic bowl is arranged between the first end panel and the second end panel, and the first surface faces the first end panel, so The second surface faces the second end panel.

Further, the first sound outlet hole is arranged through the enclosure plate, and the second sound outlet hole is arranged through the second end panel; the first vibration system includes a A first diaphragm between a magnetic circuit system and the first end panel and a first voice coil for driving the first diaphragm to vibrate and sound, and one end of the first voice coil is connected to the first The diaphragm and the other end are inserted into the magnetic channel from the first magnetic gap.

Further, the first magnetic circuit system includes a first main magnet, a first auxiliary magnet and a first main pole core, and both the first main magnet and the first auxiliary magnet are fixed on the first surface, And the first auxiliary magnet is arranged around the outer circumference of the first main magnet, the first magnetic gap is formed between the first auxiliary magnet and the first main magnet, and the first main pole core is provided. on the side of the first main magnet facing the first diaphragm.

Further, the second vibration system includes a second diaphragm arranged between the second magnetic circuit system and the second sound outlet, and a second sound for driving the second diaphragm to vibrate and sound. One end of the second voice coil is connected to the second diaphragm, and the other end is inserted into the magnetic channel from the second magnetic gap.

Further, the first voice coil includes a first voice coil body with a first hollow inner hole and a plurality of first extending portions spaced apart along the circumferential direction, and the first voice coil body is away from the first extension One end of the part is connected to the first diaphragm, the first voice coil body is arranged in the first magnetic gap, and the first extension part extends in the second magnetic gap; the second voice coil It includes a second voice coil body with a second hollow inner hole and a plurality of second extending parts spaced in the circumferential direction, and one end of the second voice coil body away from the second extending part is connected to the second vibration coil. a membrane, the second voice coil body is arranged in the second magnetic gap, the second extension part extends in the first magnetic gap; the first extension part is located on the outer periphery of the second extension part .

Further, the second magnetic circuit system includes a second main magnet, a second sub-magnet, a second main pole core and a sub-pole core, and both the second main magnet and the second sub-magnet are fixed on the the second surface, and the second sub-magnet is disposed around the outer periphery of the second main magnet, the second magnetic gap is formed between the second sub-magnet and the second main magnet; the second The main pole core is arranged on the side of the second main magnet facing the second diaphragm, and the secondary pole core is arranged on the side of the second auxiliary magnet facing the second diaphragm.

Further, the first sound-generating assembly further includes a first basin frame, the first basin frame includes a first basin frame body having a third hollow inner hole, and the first basin frame body is directed toward the second basin frame body from the first basin frame body. A plurality of first support columns extending from the sound outlet are arranged at intervals between adjacent first support columns, and the edge of the first diaphragm is fixed on the first pot body away from the first support the end of the column;

The second sound-generating assembly further includes a second pot frame, the second pot frame includes a second pot frame body with a fourth hollow inner hole, and a second pot frame body from the second pot frame body toward the first end panel A plurality of extended second support columns are arranged at intervals between adjacent second support columns, and the edge of the second diaphragm is fixed on the end of the second basin frame body away from the second support column The end of the second support column away from the second basin frame body is connected to the end of the first support column away from the first basin frame body.

Further, the casing further includes an annular support platform extending from the first end panel and protruding into the accommodating space, and the second sound outlet and the annular support platform are arranged opposite to each other at intervals, so The sound-generating unit is arranged between the annular support platform and the second sound outlet hole, and the first diaphragm, the annular support platform and the first end panel are enclosed to form a first front acoustic cavity, The annular support base is provided with an opening for communicating the first front acoustic cavity and the first sound outlet.

Further, there is a distance between the outer side of the annular support platform and the inner side of the enclosure plate, and the casing is further provided with a space extending from the portion of the annular support platform where the opening is provided to the side of the enclosure plate. A sound guide channel is provided at the position of the first sound outlet, and a communication hole connecting the opening and the first sound outlet is provided through the sound guide channel.

Further, the annular support table includes an annular support portion protruding from the first end panel and a limiting portion extending from the annular support portion toward the second end panel, the annular The support portion includes a first inner side facing the first front acoustic cavity, a first outer side facing the first inner side, and a supporting end surface facing the second end panel, and the limiting portion includes toward the second inner side of the first front acoustic cavity and the second outer side opposite to the second inner side, the first outer side is aligned with the second outer side, and the first inner side is aligned with the second outer side. The distance between the side surface and the first outer side surface is greater than the distance between the second inner side surface and the second outer side surface, the supporting end surface and the second inner side surface are enclosed to form a slot, and the opening is The first inner side extends through the first outer side, the end of the first pot frame away from the second pot frame is inserted into the slot, and the edge of the first diaphragm is clamped It is arranged between the first basin frame and the supporting end surface.

The second purpose of this application is to provide a mobile terminal, including a device body and the above-mentioned speaker box, wherein the speaker box is installed in the device body, and the device body includes a first outlet provided with a first sound outlet. In the sound panel, the first sound outlet is communicated with the second sound outlet.

Further, the mobile terminal further includes an annular sealing member, the annular sealing member is disposed between the second end panel and the first sound outlet panel and surrounds the outer circumference of the second sound outlet hole.

beneficial effect

The beneficial effects of the present application are: (1) The speaker box and the mobile terminal provided by the present application are provided with two sound outlet holes on different sides of the speaker box, and two sound-generating components are arranged in the speaker box, and the first sound-generating component faces toward The first sound-emitting hole emits sound, and the second sound-emitting component emits sound toward the second sound-emitting hole. One sound-emitting component is used for the external sound of the mobile terminal to realize the speaker function, and the other sound-emitting component is used for the non-external sound of the mobile terminal. In order to realize the function of the earpiece, the function of a speaker box that can not only emit sound, but also transmit sound without releasing sound is realized; (2) The magnetic circuit system of a sound-generating component is set on the first surface of the magnetic bowl, and the other The magnetic circuit system of the sound-generating component is arranged on the second surface of the magnetic bowl, and the first surface and the second surface are oppositely arranged, so that the assembly of the two sound-generating components is relatively compact, which is beneficial to the miniaturized design of the speaker box; The magnetic circuit system is separated, which is beneficial to reduce the interference between the two and help to improve the performance of the speaker box; (3) The first magnetic gap and the second magnetic gap are connected through the perforation through the magnetic bowl to form a magnetic Channel, the first voice coil and the second voice coil can be affected by the magnet of the first magnetic circuit system and the magnet of the second magnetic circuit system, the BL parameter is increased, and the movement of the magnetic field line between the voice coil and the magnet is more, The driving force becomes stronger, further improving the low frequency performance of the speaker box.

Description of drawings

1 is an assembly diagram of a speaker box and a second sound-emitting panel provided by an embodiment of the application;

Fig. 2 is a sectional view along A-A in Fig. 1;

3 is an assembly diagram of a speaker box and an annular seal provided by an embodiment of the application;

4 is an exploded view of a speaker box provided by an embodiment of the present application;

FIG. 5 is an exploded view of a sounding monomer provided by an embodiment of the present application;

6 is a schematic structural diagram of a magnetic bowl provided by an embodiment of the present application;

7 is a schematic structural diagram of a first voice coil provided by an embodiment of the present application;

8 is a schematic structural diagram of a second voice coil provided by an embodiment of the present application;

9 is a schematic structural diagram of a first basin frame provided by an embodiment of the present application;

10 is an assembly diagram of the second basin frame and the secondary pole core provided by the embodiment of the application;

11 is a schematic structural diagram of an angle of a lower case provided by an embodiment of the application;

FIG. 12 is a schematic structural diagram of another angle of the lower case provided by the embodiment of the present application.

In the figure: 100, speaker box; 1, shell; 101, upper cover; 102, lower shell; 11, accommodating space; 111, first front acoustic cavity; 12, first end panel; 13, second end Panel; 131, second sound hole; 14, enclosure plate; 141, first sound hole; 15, annular support table; 151, annular support part; 1511, opening; 1512, first inner side; 1513, first Outer side; 1514, supporting end surface; 152, limiter; 1521, second inner side; 1522, second outer side; 153, card slot; 16, sound guiding channel; 161, communicating hole; 2, sounding unit; 3. The first sound-generating component; 31. The first vibration system; 311, The first diaphragm; 312, The first voice coil; 3121, The first voice coil body; 3122, The first extension; 32, the first magnetic circuit system; 321, the first main magnet; 322, the first auxiliary magnet; 323, the first main pole core; 33, the first basin frame; 331, the first basin frame body; 332, the first Support column; 333, the third hollow inner hole; 4, the second sounding assembly; 41, the second vibration system; 411, the second diaphragm; 412, the second voice coil; 4121, the second voice coil body; 4122, the first Two extensions; 4123, the second hollow inner hole; 42, the second magnetic circuit system; 421, the second main magnet; 422, the second auxiliary magnet; 423, the second main pole core; 424, the auxiliary pole core; 43, 431, the second pot body; 432, the second support column; 433, the fourth hollow inner hole; 434, the air guide hole; 5, the magnetic bowl; 51, the first surface; 52, the second surface; 53, perforation; 6, magnetic channel; 61, first magnetic gap; 62, second magnetic gap; 200, first sound outlet panel; 210, first sound outlet hole; 300, annular seal.

Embodiments of the present invention

The present application will be described in detail below with reference to FIGS. 1 to 12 .

Referring to FIGS. 1-5 , an embodiment of the present application provides a speaker box 100 , which includes a housing 1 provided with an accommodating space 11 and a sound generating unit 2 accommodated in the accommodating space 11 . The housing 1 is provided with a first The sound outlet 141 and the second sound outlet 131, the first sound outlet 141 and the second sound outlet 131 are located on different sides of the speaker box 100; A sound-generating component 3 , a second sound-generating component 4 for generating sound toward the second sound-emitting hole 131 , and a magnetic bowl 5 having a through hole 53 .

By arranging the first sound outlet hole 141 and the second sound outlet hole 131 on different sides of the speaker box 100 , the first sound outlet component 3 and the second sound outlet hole that emit sound toward the first sound outlet hole 141 are arranged in the speaker box 100 . 131 The second sounding component 4 for sounding, one sounding component is used for the external sound of the mobile terminal to realize the speaker function, and the other sounding component is used for the non-external sound of the mobile terminal to realize the earpiece function, which realizes a speaker box at the same time. It has the function of transmitting sound from external sound and non-external sound.

Please refer to FIG. 2 and FIGS. 5-6 , the magnetic bowl 5 includes a first surface 51 and a second surface 52 disposed opposite to each other, and the through hole 53 extends through the first surface 51 to the second surface 52 ; the first sound-generating component 3 includes a first The vibration system 31 and the first magnetic circuit system 32 for driving the first vibration system 31 to vibrate and sound, the first magnetic circuit system 32 has a first magnetic gap 61, and the second sound-generating assembly 4 includes the second vibration system 41 and the first magnetic circuit system 32 for driving The second vibration system 41 vibrates the second magnetic circuit system 42 that emits sound, the second magnetic circuit system 42 has a second magnetic gap 62 , the first magnetic circuit system 32 is mounted on the first surface 51 , and the second magnetic circuit system 42 is mounted on the first surface 51 . The two surfaces 52 , the first magnetic gap 61 and the second magnetic gap 62 communicate with each other through the through hole 53 to form the magnetic channel 6 .

By arranging the magnetic bowl 5 including the first surface 51 and the second surface 52, the first surface 51 and the second surface 52 are arranged oppositely, the first magnetic circuit system 32 of the first sound-generating component 3 is installed on the first surface 51, the second The second magnetic circuit system 42 of the sound-generating assembly 4 is mounted on the second surface 52 , and the first sound-generating component 3 and the second sound-generating component 4 are assembled compactly, which is beneficial to the miniaturized design of the speaker box 100 . In addition, the magnetic circuit systems of the first sound-generating component 3 and the second sound-generating component 4 are separated by the magnetic bowl 5 to reduce the interference between the two, which is beneficial to improve the performance of the speaker box 100 .

In this embodiment, the vibration directions of the first diaphragm 311 and the second diaphragm 411 are the same, which is beneficial to increase the vibration amount of the air and improve the performance of the speaker box 100 .

Referring to FIGS. 2-5 , the casing 1 includes an upper cover 101 and a lower case 102 , and the upper cover 101 covers the lower case 102 . The upper cover 101 includes a second end panel 13 , and the lower shell 102 includes a first end panel 12 disposed opposite to the second end panel 13 at intervals, and an edge connected to the first end panel 12 and the second end panel 13 One of the first sound hole and the second sound hole is arranged on the surround plate 14, the other is arranged on the first end panel 12 or the second end of the surround plate 14 between the edges. on panel 13. In this embodiment, the first sound outlet hole 141 is arranged through the enclosure plate 14 , the second sound outlet hole 131 is arranged through the second end panel 13 , and the magnetic bowl 5 is arranged on the first end panel 12 and the second end panel 13 . Between the two sound holes 131 , the first surface 51 faces the first end panel 12 , and the second surface 52 faces the second sound holes 131 . The first sound outlet 141 is arranged through the enclosure plate 14, and the first sound outlet assembly 3 emits sound toward the first sound outlet 141 for transmitting the sound; the second sound outlet 131 is arranged through the second sound outlet 141. On the end panel 13 , the second sound-emitting component 4 emits sound toward the second sound-outlet hole 131 for transmitting non-external sound. Wherein, the first end panel 12 and the enclosure plate 14 are integrally formed, so as to improve the stability of the speaker box 100 and reduce the assembly process. Of course, the first end panel 12 and the shroud 14 may also be fabricated separately and then assembled together.

Please refer to FIG. 2 and FIGS. 5-6 , the first vibration system 31 includes a first vibration membrane 311 disposed between the first magnetic circuit system 32 and the first end panel 12 , and a first vibration membrane 311 for driving the first vibration membrane 311 to vibrate and emit sound One end of the first voice coil 312 is connected to the first diaphragm 311 , and the other end is inserted into the magnetic channel 6 from the first magnetic gap 61 . The first magnetic circuit system 32 includes a first main magnet 321 , a first auxiliary magnet 322 and a first main pole core 323 , the first main magnet 321 and the first auxiliary magnet 322 are fixed on the first surface 51 , and the first auxiliary magnet 322 is The magnet 322 is disposed around the outer circumference of the first main magnet 321 , a first magnetic gap 61 is formed between the first auxiliary magnet 322 and the first main magnet 321 , and the first main pole core 323 is disposed on the first main magnet 321 facing the first one side of the diaphragm 311 . In this embodiment, the magnetic permeability of the first main pole core 323 can effectively increase the magnetic flux of the magnetic channel 6 , thereby improving the acoustic performance of the sounding unit 2 . In addition, in the speaker box provided by the embodiment of the present application, the first magnetic gap and the second magnetic gap are communicated through the through holes in the magnetic bowl to form a magnetic channel, and both the first voice coil and the second voice coil can be subjected to the first magnetic circuit system. The function of the magnet and the magnet of the second magnetic circuit system increases the BL parameter, the cutting magnetic field line between the voice coil and the magnet moves more, and the driving force becomes stronger, which further improves the low-frequency performance of the speaker box.

Please refer to FIG. 2 and FIGS. 5-6 again, the second vibration system 41 includes a second vibration membrane 411 disposed between the second magnetic circuit system 42 and the second sound outlet 131 , and a second vibration membrane 411 for driving the second vibration membrane 411 to vibrate For the second voice coil 412 that emits sound, one end of the second voice coil 412 is connected to the second diaphragm 411 , and the other end is inserted into the magnetic channel 6 from the second magnetic gap 62 . The second magnetic circuit system 42 includes a second main magnet 421 , a second secondary magnet 422 , a second main pole core 423 and a secondary pole core 424 , and both the second main magnet 421 and the second secondary magnet 422 are fixed on the second surface 52 , and the second secondary magnet 422 is arranged around the outer periphery of the second main magnet 421, a second magnetic gap 62 is formed between the second secondary magnet 422 and the second main magnet 421; the second main pole core 423 is arranged on the second main magnet On the side of the 421 facing the second diaphragm 411 , the secondary pole core 424 is disposed on the side of the second secondary magnet 422 facing the second diaphragm 411 . In this embodiment, the magnetic permeability of the second main pole core 423 and the secondary pole core 424 can effectively increase the magnetic flux of the magnetic channel 6 , thereby improving the acoustic performance of the sounding unit 2 .

Preferably, the first main magnet 321 , the second main magnet 421 , the first auxiliary magnet 322 and the second auxiliary magnet 422 are made of magnetic steel. It can be understood that the first main magnet 321 , the second main magnet 421 , the first sub-magnet 322 and the second sub-magnet 422 can also use natural lodestones.

In this embodiment, the first main magnet 321 and the second main magnet 421 are both rectangular, and there are four first sub-magnets 322 , second sub-magnets 422 and sub-pole cores 424 , and one of the first sub-magnets 322 corresponds to One side of the first main magnet 321 , one second secondary magnet 422 corresponds to one side of the second main magnet 421 , and one secondary pole core 424 corresponds to one second secondary magnet 422 .

2 and FIGS. 6-8 , the first voice coil 312 includes a first voice coil body 3121 having a first hollow inner hole 3123 and a plurality of first extending portions 3122 spaced in the circumferential direction. The first voice coil body One end of the 3121 away from the first extension portion 3122 is connected to the first diaphragm 311 . The first voice coil body 3121 is disposed in the first magnetic gap 61 , and the first extension portion 3122 extends in the second magnetic gap 62 . The second voice coil 412 includes a second voice coil body 4121 having a second hollow inner hole 4123 and a plurality of second extending portions 4122 spaced apart in the circumferential direction. One end of the second voice coil body 4121 away from the second extending portion 4122 Connected to the second diaphragm 411 , the second voice coil body 4121 is disposed in the second magnetic gap 62 , the second extending portion 4122 extends in the first magnetic gap 61 , and the first extending portion 3122 is located on the outer periphery of the second extending portion 4122 . In this embodiment, there are four first extension parts 3122 and four second extension parts 4122, one first extension part 3122 corresponds to one second extension part 4122, and correspondingly, the magnetic bowl 5 is provided with four through holes 53, A first extension portion 3122 and a second extension portion 4122 pass through a through hole 53 . In other embodiments, the number of the first extension portion 3122 and the second extension portion 4122 may also be one, two, three, etc., or the first extension portion 3122 and the second extension portion 4122 may not be provided.

Please refer to FIGS. 2 , 5 and 9-10 , the first sound-generating component 3 further includes a first pot frame 33 , and the first pot frame 33 includes a first pot frame body 331 having a third hollow inner hole 333 and a The basin frame body 331 extends toward a plurality of first support columns 332 adjacent to the second sound outlet 131 . The adjacent first support columns 332 are spaced apart. The edge of the first diaphragm 311 is fixed to the first basin frame body 331 The first diaphragm 311 covers the third hollow inner hole 333 away from the end of the first support column 332 . The second sound-generating assembly 4 further includes a second pot frame 43 . The second pot frame 43 includes a second pot frame body 431 with a fourth hollow inner hole 433 and extends from the second pot frame body 431 toward the first end panel 12 . A plurality of second support columns 432 are arranged at intervals between adjacent second support columns 432. The edge of the second diaphragm 411 is fixed on the end of the second basin frame body 431 away from the second support column 432. The diaphragm 411 covers the fourth hollow inner hole 433 . The end of the second support column 432 away from the second basin frame body 431 is connected to the end of the first support column 332 away from the first basin frame body 331 . In this embodiment, the side of the secondary pole core 424 away from the second magnetic gap 62 is connected to the second pot frame 43 and is integrally formed with the second pot frame 43 . Specifically, the side of the secondary pole core 424 away from the second magnetic gap 62 is connected to the second basin frame body 431 , the four secondary pole cores 424 are located in the fourth hollow inner hole 433 , and the adjacent two secondary pole cores 424 are connected to the second basin frame body 431 . The second pot body 431 forms an air guide hole 434 , and the air guide hole 434 communicates with the fourth hollow inner hole 433 and the accommodating space 11 , thereby enhancing the connection between the second diaphragm 411 and the second main pole core 423 and the secondary pole core 424 Air circulation reduces the air pressure between the second diaphragm 411 and the second main pole core 423 and the secondary pole core 424, and accelerates the heat between the second diaphragm 411 and the second main pole core 423 and the secondary pole core 424 The speed of emission, in turn, improves the acoustic performance of the speaker enclosure 100 .

Please refer to FIGS. 2-3 and 11-12 , the housing 1 further includes an annular support base 15 extending from the first end panel 12 and protruding into the accommodating space 11 , the second sound outlet 131 and the annular support base 15 The sound generating unit 2 is arranged between the annular support table 15 and the second sound outlet hole 131, and the first diaphragm 311 is enclosed with the annular support table 15 and the first end panel 12 to form the first front sound cavity 111. The annular support 15 is provided with an opening 1511 for connecting the first front acoustic cavity 111 and the first sound outlet hole 141 .

Preferably, the annular support table 15 includes an annular support portion 151 protruding from the first end panel 12 and a limiting portion 152 extending from the annular support portion 151 toward the second end panel 13. The annular support portion 151 includes The first inner side surface 1512 facing the first front acoustic cavity 111 , the first outer side surface 1513 arranged opposite to the first inner side surface 1512 , and the supporting end surface 1514 arranged toward the second end panel 13 . The second inner side 1521 of the acoustic cavity 111 and the second outer side 1522 opposite to the second inner side 1521, the first outer side 1513 and the second outer side 1522 are aligned, and the first inner side 1512 and the first outer side 1513 are arranged in alignment. The distance L ₁ is greater than the distance L ₂ between the second inner side 1521 and the second outer side 1522 , the supporting end surface 1514 and the second inner side 1521 enclose a slot 153 , and the opening 1511 extends from the first inner side 1512 to the second side. An outer side surface 1513 , the end of the first pot frame 33 away from the second pot frame 43 is inserted into the slot 153 , and the edge of the first diaphragm 311 is sandwiched between the first pot frame 33 and the supporting end surface 1514 .

Please refer to FIGS. 2-3 and 11-12 again, there is a distance between the outer side of the annular support table 15 and the inner side of the enclosure plate 14 , and the casing 1 is provided with a portion extending from the portion of the annular support table 15 where the opening 1511 is provided to the enclosure plate 14 . The sound guiding channel 16 at the part of the plate 14 where the first sound outlet hole 141 is provided, the sound guiding channel 16 penetrates through the communication hole 161 which is provided with the communication opening 1511 and the first sound outlet hole 141 . The sound generated by the vibration of the first diaphragm 311 is transmitted to the outside of the speaker box 100 through the first front acoustic cavity 111 , the opening 1511 , the communication hole 161 and the first sound outlet hole 141 in sequence.

Embodiments of the present application further provide a mobile terminal (not shown in the figure), including a device body (not shown in the figure) and the above-mentioned speaker box 100 . The speaker box 100 is installed in the device body, and the device body includes a The first sound-out panel 200 with a sound-outlet hole 210 communicates with the second sound-outlet hole 131 . Of course, the device body is also provided with a second sound outlet that communicates with the first sound outlet 141 .

Preferably, the mobile terminal further includes an annular seal 300 , and the annular seal 300 is disposed between the second end panel 13 and the first sound outlet panel 200 and surrounds the outer circumference of the second sound outlet hole 131 .

The sound produced by the vibration of the first sound-emitting component 3 is emitted out through the first sound-out hole 141 and the second sound-out hole in turn, so as to realize the speaker function, and the sound produced by the vibration of the second sound-emitting component 4 sequentially passes through the second sound outlet The hole 131 and the first sound outlet hole 210 emit outwards, so as to realize the function of receiving a call (the function of the earpiece). In this embodiment, a speaker box is used to realize the function of receiving a call and the function of speaking at the same time, which is beneficial to the miniaturized design of the mobile terminal.

The above are only the embodiments of the present application. It should be pointed out that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present application, but these belong to the scope of the present application. protected range.

Claims

The speaker box is characterized in that it includes a housing provided with an accommodating space and a sound-emitting unit accommodated in the accommodating space, the housing is provided with a first sound outlet hole and a second sound outlet hole, the The first sound outlet and the second sound outlet are located on different sides of the speaker box;

The sound-generating unit includes a first sound-generating component for sounding toward the first sound-outlet hole, a second sound-generating component for sounding toward the second sound-outlet hole, and a magnetic bowl with a perforation, the magnetic bowl comprising a first surface and a second surface disposed oppositely, the perforation extending from the first surface to the second surface;

The first sound-generating component includes a first vibration system and a first magnetic circuit system for driving the first vibration system to vibrate and sound, the first magnetic circuit system has a first magnetic gap, and the second sound-generating component includes A second vibration system and a second magnetic circuit system for driving the second vibration system to vibrate and sound, the second magnetic circuit system has a second magnetic gap, and the first magnetic circuit system is mounted on the first surface , the second magnetic circuit system is mounted on the second surface, and the first magnetic gap and the second magnetic gap communicate with each other through the through hole to form a magnetic channel.
The loudspeaker enclosure of claim 1, wherein the housing includes a first end panel, a second end panel spaced apart from the first end panel, and a second end panel connected to the first end panel. A shroud between the edge of the top panel and the edge of the second end panel, one of the first sound hole and the second sound hole is arranged on the shroud, the other The magnetic bowl is arranged through the first end panel or the second end panel, the magnetic bowl is arranged between the first end panel and the second end panel, the first end panel The surface faces the first end panel and the second surface faces the second end panel.
The loudspeaker box according to claim 2, wherein the first sound outlet hole is arranged through the enclosure plate, and the second sound outlet hole is arranged through the second end panel; the The first vibration system includes a first diaphragm arranged between the first magnetic circuit system and the first end panel and a first voice coil for driving the first diaphragm to vibrate and sound, and the One end of the first voice coil is connected to the first diaphragm, and the other end is inserted into the magnetic channel from the first magnetic gap.
The speaker box according to claim 3, wherein the first magnetic circuit system comprises a first main magnet, a first auxiliary magnet and a first main pole core, the first main magnet and the first auxiliary The magnets are all fixed on the first surface, and the first auxiliary magnet is arranged around the outer circumference of the first main magnet, and the first auxiliary magnet and the first main magnet are formed between the first auxiliary magnet and the first main magnet. In a magnetic gap, the first main pole core is arranged on the side of the first main magnet facing the first diaphragm.
The speaker box according to claim 3 or 4, wherein the second vibration system comprises a second vibration film disposed between the second magnetic circuit system and the second sound outlet, and a second vibration film for A second voice coil that drives the second diaphragm to vibrate and emit sound, one end of the second voice coil is connected to the second diaphragm, and the other end is inserted into the magnetic channel from the second magnetic gap.
The loudspeaker box according to claim 5, wherein the first voice coil comprises a first voice coil body having a first hollow inner hole and a plurality of first extending parts spaced apart in the circumferential direction, the first voice coil One end of a voice coil body away from the first extension portion is connected to the first diaphragm, the first voice coil body is disposed in the first magnetic gap, and the first extension portion extends over the first diaphragm. two magnetic gaps; the second voice coil includes a second voice coil body with a second hollow inner hole and a plurality of second extending parts spaced in the circumferential direction, the second voice coil body is far from the first voice coil body One end of the two extension parts is connected to the second diaphragm, the second voice coil body is arranged in the second magnetic gap, and the second extension part extends in the first magnetic gap; the first The extension portion is located on the outer periphery of the second extension portion.
The speaker box according to claim 5, wherein the second magnetic circuit system comprises a second main magnet, a second auxiliary magnet, a second main pole core and a second pole core, the second main magnet and the The second sub-magnets are all fixed on the second surface, and the second sub-magnets are arranged around the outer circumference of the second main magnet, and the second sub-magnet and the second main magnet are formed between the second magnetic gap; the second main pole core is arranged on the side of the second main magnet facing the second diaphragm, and the secondary pole core is arranged on the side facing the second auxiliary magnet one side of the second diaphragm.
The speaker box according to claim 5, wherein the first sound-generating assembly further comprises a first basin frame, the first basin frame comprising a first basin frame body having a third hollow inner hole and a The first basin frame body is extended toward a plurality of first support columns close to the second sound outlet, and the adjacent first support columns are arranged at intervals, and the edge of the first diaphragm is fixed on the first support column. an end of the pot body away from the first support column;

The second sound-generating assembly further includes a second pot frame, the second pot frame includes a second pot frame body with a fourth hollow inner hole, and a second pot frame body from the second pot frame body toward the first end panel A plurality of extended second support columns are arranged at intervals between adjacent second support columns, and the edge of the second diaphragm is fixed on the end of the second basin frame body away from the second support column The end of the second support column away from the second basin frame body is connected to the end of the first support column away from the first basin frame body.
The loudspeaker box according to claim 8, wherein the casing further comprises an annular support stand extending from the first end panel and protruding into the accommodating space, and the second sound outlet hole It is arranged opposite to the annular support platform, the sound-emitting unit is arranged between the annular support platform and the second sound outlet, and the first diaphragm is connected to the annular support platform and the first The end panel is enclosed to form a first front sound cavity, and the annular support platform is provided with an opening for communicating the first front sound cavity and the first sound outlet hole.
The loudspeaker box according to claim 9, characterized in that, there is a distance between the outer side of the annular support platform and the inner side of the enclosure plate, and the casing is further provided with a distance from the annular support platform. The part of the opening extends to the sound guide channel of the part of the enclosure plate where the first sound outlet hole is provided, and the sound guide channel runs through a communication hole that communicates the opening and the first sound outlet hole .
The loudspeaker box according to claim 9, wherein the annular support table comprises an annular support portion protruding from the first end panel and a ring support portion from the annular support portion toward the second end panel an extending and protruding limiting portion, the annular support portion includes a first inner side facing the first front acoustic cavity, a first outer side facing the first inner side, and a panel facing the second end portion The supporting end surface provided, the limiting portion includes a second inner side facing the first front acoustic cavity and a second outer side opposite to the second inner side, the first outer side and the second The outer sides are aligned and arranged, the distance between the first inner side and the first outer side is greater than the distance between the second inner side and the second outer side, and the supporting end surface and the second inner side are The sides are enclosed to form a card slot, the opening extends from the first inner side to the first outer side, and the end of the first basin frame away from the second basin frame is inserted into the card groove Inside, the edge of the first diaphragm is sandwiched between the first basin frame and the supporting end surface.
A mobile terminal, characterized in that it includes a device body and a speaker box according to any one of claims 1 to 11 , the speaker box is installed in the device body, and the device body includes a first sound outlet hole. The first sound outlet panel, the first sound outlet hole communicates with the second sound outlet hole.
The mobile terminal according to claim 12, wherein the mobile terminal further comprises an annular sealing member, the annular sealing member is disposed between the second end panel and the first sound-emitting panel and surrounds the on the periphery of the second sound outlet.