WO2022061987A1

WO2022061987A1 - Loudspeaker enclosure and mobile terminal

Info

Publication number: WO2022061987A1
Application number: PCT/CN2020/120992
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: CN213426389U

Abstract

A loudspeaker enclosure and a mobile terminal. The loudspeaker enclosure comprises a housing provided with an inner cavity and a sound production unit contained in the inner cavity, wherein the housing is provided with a first sound outlet hole and a second sound outlet hole, and the first sound outlet hole and the second sound outlet hole are located on different sides of the housing. 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 clamped between the first sound production assembly and the second sound production assembly, wherein the magnetic bowl comprises a first surface and a second surface that are oppositely arranged; the first sound production assembly comprises a first vibration system and a first magnetic circuit system used for driving the first vibration system to vibrate and produce sound; the second sound production assembly comprises a second vibration system and a second magnetic circuit system used for driving the second vibration system to vibrate and produce sound; the first magnetic circuit system is installed on the first surface; and the second magnetic circuit system is installed on the second surface. 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 sound and electricity, and in particular, to a speaker box and a mobile terminal having the speaker box.

Background technique

At present, speaker boxes for playing sound are widely used in smart mobile terminals. For some mobile terminals (such as mobile phones), it is necessary to configure both a speaker box for external sound and a receiver for non-external sound, which is not conducive 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, so as to solve the technical problem that the existing speaker box is only used for the function of sounding out or receiving a call.

technical solutions

One of the technical solutions provided by the purpose of the present application is as follows: a speaker box, comprising a casing provided with an inner cavity and a sound producing unit accommodated in the inner cavity, the casing is provided with a first sound outlet and The second sound outlet, the first sound outlet and the second sound outlet are located on different sides of the housing; the sound producing unit includes a first sound outlet for sounding toward the first sound outlet A sound-generating component, a second sound-generating component for sounding toward the second sound-emitting hole, and a magnetic bowl sandwiched between the first sound-generating component and the second sound-generating component, the magnetic bowl includes oppositely arranged a first surface and a 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 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 first magnetic circuit system is mounted on the first surface, and the second magnetic circuit system is mounted on the second surface.

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 The enclosure between the edges of the panels, one of the first sound hole and the second sound hole is arranged on the first end panel or on the second end panel, and the other One is disposed through the enclosure, the magnetic bowl is disposed between the first end panel and the second end panel, the first surface faces the first end panel, so The second surface faces the second end panel.

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

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

Further, the sounding unit further includes a first basin frame and a second basin frame, the first basin frame includes a first basin frame body with a first hollow inner hole, and the first basin frame body is located in the Between the first end panel and the magnetic bowl, the second pot frame includes a second pot frame body with a second hollow inner hole, and the second pot frame body is located between the second end panel and the magnetic bowl. between the magnetic bowls; the first magnetic circuit system is arranged between the first surface and the first bowl frame body, and the second magnetic circuit system is arranged between the second surface and the second Between the basin frame bodies, the first diaphragm is mounted on the end of the first basin frame body close to the first end panel, and the first voice coil passes through the first diaphragm. the first hollow inner hole is extended and inserted in the first magnetic gap, the first secondary pole core abuts against the end of the first pot frame body close to the magnetic bowl; the second The diaphragm is installed on the end of the second basin frame body close to the second end panel, and the second voice coil is extended and inserted from the second diaphragm through the second hollow inner hole In the second magnetic gap, the second secondary pole core abuts against the end of the second pot body close to the magnetic bowl.

Further, the first pot frame further includes at least two first support posts extending from the first pot frame body toward the second end panel, and the second pot frame includes at least two first support columns extending from the first pot frame body toward the second end panel. The second support column of the second basin frame body extends toward the first end panel, and the magnetic bowl is provided with at least two first escape grooves penetrating from the first surface to the second surface, so The first auxiliary magnet is provided with at least two second avoidance grooves which are respectively communicated with the first avoidance grooves. at least two fourth avoidance grooves respectively communicated with the first avoidance grooves are formed through the second auxiliary magnet, and at least two In the fifth avoidance groove communicated with the fourth avoidance groove, each of the first support columns respectively passes through one of the third avoidance grooves and one of the second avoidance grooves and extends into one of the first avoidance grooves, Each of the second support posts respectively passes through one of the fifth escape grooves, and one of the fourth escape grooves extends into one of the first escape grooves and abuts against one of the first support posts.

Further, the first secondary pole core is also provided with a first air release hole communicating with the first magnetic gap; the second secondary pole core is also provided with a ventilation hole communicating with the second magnetic gap. Second vent.

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

Further, there is a distance between the annular support platform and the enclosure plate, and the housing further includes a sound guide channel extending from the second end panel and protruding into the inner cavity, the sound guide channel The channel extends from the part of the annular support platform where the opening is provided to the part of the enclosure plate where the second sound outlet is provided, and the sound guide channel runs through and is provided with a connection between the opening and the The communication hole of the second sound outlet.

Further, the annular support table includes an annular support portion protruding from the second end panel and a limiting portion extending from the annular support portion toward the first end panel. 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 support end facing the first 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 to the first outer side, the second diaphragm and the second pot frame body are accommodated in the slot, and the edge of the second diaphragm is sandwiched between between the support end surface and the second basin frame body.

The second purpose of the present application is to provide a mobile terminal, including a device body, an annular seal, and the above-mentioned speaker box, wherein the speaker box and the annular seal are both installed in the device body, and the device body includes A first sound-out panel with a first sound-outlet and a second sound-outlet with a second sound-outlet, the first sound-outlet communicates with the first sound-outlet, and the second sound-outlet The sound hole is communicated with the second sound outlet; the annular seal is arranged between the first end panel and the first sound outlet panel and surrounds the outer periphery of the first sound outlet.

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, wherein the second sound-emitting component is used for the external sound of the mobile terminal to realize the speaker function, and the first sound-emitting component is used for the non-external sound of the mobile terminal. The sound is used to realize the function of receiving the call (earpiece), and a speaker box can be used to emit sound to realize the speaker function, and can be used for non-external sound to realize the function of receiving the phone, which is equivalent to omitting the separate setting of the receiver. Therefore, it is beneficial to the miniaturized design of the mobile terminal; (2) the first sound-emitting component and the second sound-emitting component are respectively arranged on two opposite sides of the magnetic bowl, and the first sound-emitting component emits sound directly toward the first sound-outlet hole to realize the reception of the voice. function, the second sound-emitting component emits sound toward the second sound-out hole through the first front sound cavity to realize the function of speaker (amplification), which is not only conducive to ensuring the sound-speaking effect, but also conducive to improving the compactness of the speaker box, so as to have Conducive to the miniaturized design of the speaker box.

Description of drawings

1 is a schematic diagram of the positions of a speaker box, a first sound-emitting panel, and a second sound-emitting panel according to an embodiment of the present 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 first basin frame provided by an embodiment of the present application;

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

FIG. 8 is a first structural schematic diagram of a lower casing provided by an embodiment of the present application;

FIG. 9 is a second structural schematic diagram of a lower case provided by an embodiment of the present application.

In the figure: 100, speaker box; 1, shell; 101, upper cover; 102, lower shell; 11, inner cavity; 111, first front acoustic cavity; 12, first end panel; 121, first sound outlet ; 13, the second end panel; 14, the enclosure plate; 141, the second sound hole; 15, the annular support table; 151, the annular support part; 1511, the opening; Side; 1514, support end surface; 152, limiter; 1521, second inner side; 1522, second outer side; 153, card slot; 16, sound guide channel; 161, communication hole; 2, sounding unit; 3 31, the first vibration system; 311, the first diaphragm; 312, the first voice coil; 32, the first magnetic circuit system; 320, the first magnetic gap; 321, the first main magnet; 322 , the first auxiliary magnet; 323, the first main pole core; 324, the first auxiliary pole core; 4, the second sound component; 41, the second vibration system; 411, the second diaphragm; 412, the second voice coil; 42, the second magnetic circuit system; 420, the second magnetic gap; 421, the second main magnet; 422, the second auxiliary magnet; 423, the second main pole core; 424, the second auxiliary pole core; 5, the magnetic bowl; 51, the first surface; 52, the second surface; 6, the first pot frame; 60, the first hollow inner hole; 61, the first pot frame body; 62, the first support column; 7, the second pot frame; 70 , the second hollow inner hole; 71, the second basin frame body; 72, the second support column; 81, the first avoidance groove; 82, the second avoidance groove; 83, the third avoidance groove; 84, the fourth avoidance groove; 85, the fifth avoidance groove; 91, the first vent hole; 92, the second vent hole; 200, the device body; 210, the first sound outlet panel; 211, the first sound outlet hole; 220, the second sound outlet panel; 221. The second sound outlet; 300, the annular seal.

Embodiments of the present invention

The present application will be described in detail below with reference to FIGS. 1 to 9 .

Referring to FIGS. 1-5 , an embodiment of the present application provides a speaker box 100 , which includes a housing 1 with an inner cavity 11 and a sound generating unit 2 accommodated in the inner cavity 11 , the housing 1 is provided with a first sound output The hole 121 and the second sound hole 141 , the first sound hole 121 and the second sound hole 141 are located on different sides of the housing 1 .

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 first end panel 12 , and the lower shell 102 includes a second end panel 13 disposed opposite to the first end panel 12 at intervals, and an edge connected to the first end panel 12 and the second end panel 13 The enclosure plate 14 between the edges of the first end panel 12 is provided with a first sound outlet hole 121, and the enclosure plate 14 is provided with a second sound outlet hole 141 therethrough. Wherein, the second end panel 13 and the enclosure plate 14 are integrally formed into the lower shell 102 , which improves the stability of the speaker box 100 and reduces the assembly process. Of course, the second end panel 13 and the shroud 14 can also be fabricated separately and then assembled together. In addition, as an alternative embodiment, the arrangement positions of the first sound hole 121 and the second sound hole 141 are not limited to this. For example, the first sound hole can also be arranged on the second end panel 13; The sound outlet is arranged on the enclosure plate 14 , and the second sound outlet is arranged on the first end panel 12 or the second end panel 13 .

The sound producing unit 2 includes a first sound producing component 3 for producing sound toward the first sound outlet 121 , a second sound producing component 4 for producing sound toward the second sound outlet 141 , and a second sound producing component 4 sandwiched between the first sound producing component 3 and the second sound producing unit 4 . The magnetic bowl 5 between the sounding components 4, the magnetic bowl 5 includes a first surface 51 and a second surface 52 arranged opposite to each other, the first surface 51 is directly opposite to the first sound outlet 121, and the second surface 52 faces the second end Panel 13, the first sound-generating component 3 is arranged between the first surface 51 and the first sound-outlet hole 121, the second sound-generating component 4 is arranged between the second surface 52 and the second end panel 13, and the second sound-generating component A first front sound cavity 111 communicating with the second sound outlet hole 141 is formed between the 4 and the second end panel 13 .

In the speaker box 100 provided by the embodiment of the present application, two sound outlet holes (ie, the first sound outlet hole 121 and the second sound outlet hole 141 ) are arranged on different sides of the housing 1 , and two sound outlet holes are arranged in the speaker box 100 . There are two sound-generating components (ie, the first sound-generating component 3 and the second sound-generating component 4 ), the first sound-generating component 3 emits sound toward the first sound-outlet hole 121 , the second sound-generating component 4 emits sound toward the second sound-emitting hole 141 , and the second sound-generating component 4 emits sound toward the second sound-outlet hole 141 . The component 4 is used for the external sound of the mobile terminal to realize the speaker function, and the first sound-emitting component 3 is used for the non-external sound of the mobile terminal to realize the function of receiving the voice (earpiece), realizing that a speaker box can not only broadcast the sound to the outside, The realization of the speaker function, which can also be used for non-external sound to realize the receiver function, is equivalent to omitting the separate setting of the receiver, thereby facilitating the miniaturized design of the mobile terminal. In addition, the first sound-generating component 3 and the second sound-generating component 4 are respectively disposed on two opposite sides of the magnetic bowl 5, and the first sound-generating component 3 emits sound directly toward the first sound-emitting hole 121 for realizing the function of receiving a voice, and the second sound-generating component 3 emits sound directly toward the first sound-emitting hole 121 The component 4 emits sound toward the second sound outlet hole 141 through the first front sound cavity 111 to realize the function of speaker (amplification), which is beneficial to ensure the speaker effect and improve the compactness of the speaker box 100, which is beneficial to Miniaturized design of speaker box 100 .

Please refer to FIG. 2 and FIGS. 4-5 , the first sound-generating assembly 3 includes a first vibration system 31 and a first magnetic circuit system 32 for driving the first vibration system 31 to vibrate and sound, and the first magnetic circuit system 32 has a first magnetic circuit system 32 . Gap 320, the second sound-generating component 4 includes a second vibration system 41 and a second magnetic circuit system 42 for driving the second vibration system 41 to vibrate and sound, the second magnetic circuit system 42 has a second magnetic gap 420, the first magnetic circuit The system 32 is installed on the first surface 51 , and the second magnetic circuit system 42 is installed on the second surface 52 ; the first vibration system 31 includes a first diaphragm disposed between the first magnetic circuit system 32 and the first sound outlet 121 311 and the first voice coil 312 for driving the first diaphragm 311 to vibrate and sound, one end of the first voice coil 312 is connected to the first diaphragm 311, and the other end is inserted in the first magnetic gap 320; the second vibration system 41 It includes a second diaphragm 411 arranged between the second magnetic circuit system 42 and the second end panel 13 and a second voice coil 412 for driving the second diaphragm 411 to vibrate and sound, and one end of the second voice coil 412 is connected The second diaphragm 411 and the other end are inserted into the second magnetic gap 420 . Wherein, 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 .

Preferably, the first magnetic circuit system 32 includes a first main magnet 321 , a first auxiliary magnet 322 , a first main pole core 323 and a first auxiliary pole core 324 , and both 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 disposed around the outer circumference of the first main magnet 321, a first magnetic gap 320 is formed between the first auxiliary magnet 322 and the first main magnet 321, and the first main pole core 323 is provided. On the side of the first main magnet 321 facing the first diaphragm 311, the first secondary pole core 324 is disposed on the side of the first secondary magnet 322 facing the first diaphragm 311; the second magnetic circuit system 42 includes a second The main magnet 421 , the second auxiliary magnet 422 , the second main pole core 423 and the second auxiliary pole core 424 , the second main magnet 421 and the second auxiliary magnet 422 are all fixed on the second surface 52 , and the second auxiliary magnet 422 Around the periphery of the second main magnet 421, a second magnetic gap 420 is formed between the second auxiliary magnet 422 and the second main magnet 421; the second main pole core 423 is disposed on the second main magnet 421 facing the second diaphragm On one side of 411 , the second 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 conductivity of the first main pole core 323 and the first secondary pole core 324 can effectively increase the magnetic flux of the first magnetic gap 320 , and the conductivity of the second main pole core 423 and the second secondary pole core 424 can be effectively increased. The magnetic effect can effectively increase the magnetic flux of the second magnetic gap 420 , thereby improving the acoustic performance of the sounding unit 2 .

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

Please refer to FIG. 2 and FIGS. 4-7 , the sounding unit 2 further includes a first pot frame 6 and a second pot frame 7 , the first pot frame 6 includes a first pot frame body 61 with a first hollow inner hole 60 , and the first pot frame 6 includes a first pot frame body 61 with a first hollow inner hole 60 . A pot holder body 61 is located between the first end panel 12 and the magnetic bowl 5 , the second pot holder 7 includes a second pot holder body 71 having a second hollow inner hole 70 , and the second pot holder body 71 is located at the second end between the top panel 13 and the magnetic bowl 5; the first magnetic circuit system 32 is provided between the first surface 51 and the first basin frame body 61, and the second magnetic circuit system 42 is provided between the second surface 52 and the second basin frame body Between 71 and 71, the first diaphragm 311 is installed on the end of the first pot body 61 close to the first end panel 12, and the first voice coil 312 extends from the first diaphragm 311 through the first hollow inner hole 60 and extends Inserted in the first magnetic gap 320 , the first secondary pole core 324 abuts against the end of the first pot body 61 close to the magnetic bowl 5 ; the second diaphragm 411 is installed on the second pot body 71 near the At the ends of the two-end panel 13 , the second voice coil 412 passes through the second hollow inner hole 70 from the second diaphragm 411 and is extended and inserted into the second magnetic gap 420 , and the second secondary pole core 424 abuts against the second magnetic gap 420 . The ends of the two basin frame bodies 71 are close to the magnetic bowl 5 . The first basin frame 6 further includes at least two first support columns 62 extending from the first basin frame body 61 toward the second end panel 13 , and the second basin frame 7 includes at least two first basin frames extending from the second basin frame body 71 toward the second end panel 13 . The second support column 72 extending from one end panel 12 , the magnetic bowl 5 is provided with at least two first escape grooves 81 penetrating from the first surface 51 toward the second surface 52 , and the first auxiliary magnet 322 is provided with at least two penetrating grooves 81 . Two second avoidance grooves 82 respectively communicated with the first avoidance grooves 81, and at least two third avoidance grooves 83 respectively communicated with the second avoidance grooves 82 are formed on the first secondary pole core 324; the second auxiliary magnet 422 At least two fourth avoidance grooves 84 respectively communicated with the first avoidance grooves 81 are formed therethrough, and at least two fifth avoidance grooves 85 respectively communicated with the fourth avoidance grooves 84 are formed through the second secondary pole core 424, Each first support column 62 extends through a third avoidance groove 83, a second avoidance groove 82 and extends into a first avoidance groove 81, and each second support column 72 passes through a fifth avoidance groove 85, A fourth escape groove 84 extends inside a first escape groove 81 and abuts against a first support column 62 . Here, by supporting the first support column 62 and the second support column 72 together, the first pot frame 6 can be supported and positioned by the second pot frame 7, so that the A pot stand 6 supports the positioning structure. The arrangement of the first avoidance groove 81, the second avoidance groove 82, the third avoidance groove 83, the fourth avoidance groove 84 and the fifth avoidance groove 85, on the one hand, can realize the connection of the first pot frame 6 and the second pot frame 7, On the other hand, the magnetic bowl 5 , the first magnetic circuit system 32 and the second magnetic circuit system 42 can be limited horizontally, so that the magnetic bowl 5 , the first magnetic circuit system 32 and the second magnetic circuit system 42 are stably installed on the between the first pot holder body 61 and the second pot holder body 71 .

Preferably, the first secondary pole core 324 is further provided with a first vent hole 91 communicating with the first magnetic gap 320 ; the second secondary pole core 424 is also provided with a second vent hole 91 communicating with the second magnetic gap 420 hole 92. The first vent hole 91 communicates with the first magnetic gap 320 , the first hollow inner hole 60 and the inner cavity 11 , which enhances the air circulation between the first diaphragm 311 , the first main pole core 323 and the first secondary pole core 324 , The air pressure between the first diaphragm 311 and the first main pole core 323 and the first auxiliary pole core 324 is reduced, and the air pressure between the first diaphragm 311 and the first main pole core 323 and the first auxiliary pole core 324 is accelerated. Heat dissipation speed; the second air vent 92 communicates with the second magnetic gap 420 , the second hollow inner hole 70 and the inner cavity 11 , which enhances the gap between the second diaphragm 411 and the second main pole core 423 and the second secondary pole core 424 The air circulation can reduce the air pressure between the second diaphragm 411 and the second main pole core 423 and the second auxiliary pole core 424, and speed up the second diaphragm 411 and the second main pole core 423 and the second auxiliary pole core. The heat dissipation rate between 424, therefore, improves the acoustic performance of the speaker enclosure 100.

Please refer to FIGS. 2-3 and 8-9 , the housing 1 further includes an annular support platform 15 extending from the second end panel 13 and protruding into the inner cavity 11 . The first sound outlet 121 is spaced from the annular support platform 15 . Oppositely arranged, the sound-generating unit 2 is arranged between the annular support table 15 and the first sound outlet hole 121 , and the second diaphragm 411 , the annular support table 15 and the second end panel 13 are enclosed to form the first front sound cavity 111 . The support table 15 is provided with an opening 1511 for communicating the first front acoustic cavity 111 and the second sound outlet hole 141 . The arrangement of the annular support platform 15 can, on the one hand, realize the support and positioning of the sound generating unit 2, and on the other hand, realize the formation of the first front sound cavity 111 .

Preferably, the annular support table 15 includes an annular support portion 151 protruding from the second end panel 13 and a limiting portion 152 extending from the annular support portion 151 toward the first end panel 12. 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 first end panel 12 . 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 1513 , the second diaphragm 411 and the second pot frame body 71 are accommodated in the slot 153 , and the edge of the second diaphragm 411 is sandwiched between the support end surface 1514 and the second pot frame body 71 . The annular support portion 151 is mainly used for supporting the sounding unit 2 and for enclosing the second end panel 13 and the second diaphragm 411 to form the first front acoustic cavity 111 . The limiting portion 152 is mainly used to limit the sounding unit 2 horizontally. There is a distance between the annular support platform 15 and the enclosure plate 14 . The housing 1 further includes a sound guide channel 16 extending from the second end panel 13 and protruding into the inner cavity 11 . The sound guide channel 16 extends from the annular support platform 15 . The portion with the opening 1511 extends to the portion of the enclosure plate 14 where the second sound outlet 141 is formed, and the sound guide channel 16 penetrates through the communication hole 161 that communicates the opening 1511 and the second sound outlet 141 . The sound generated by the vibration of the second diaphragm 411 is sequentially 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 second sound outlet hole 141 .

An embodiment of the present application further provides a mobile terminal (not shown in the figure), which includes a device body 200, an annular seal 300, and the above-mentioned speaker box 100. Both the speaker box 100 and the annular seal 300 are installed in the device body 200, The device body 200 includes a first sound outlet panel 210 with a first sound outlet hole 211 and a second sound outlet panel 220 with a second sound outlet hole 221. The first sound outlet hole 211 communicates with the first sound outlet hole 121 , the second sound hole 221 communicates with the second sound hole 141 ; the annular seal 300 is arranged between the first end panel 12 and the first sound hole 210 and surrounds the outer circumference of the first sound hole 121 . The sound produced by the vibration of the first sound-generating component 3 is sent out through the first sound-out hole 121 and the first sound-out hole 211 in turn, so as to realize the function of receiving a call (the function of the earpiece), and the sound produced by the vibration of the second sound-emitting component 4 passes through in turn. Through the second sound-out hole 141 and the second sound-out hole 221, it emits to the outside, so as to realize the speaker function. In this embodiment, a speaker box 100 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 casing with an inner cavity and a sound-emitting unit accommodated in the inner cavity, the casing is provided with a first sound outlet hole and a second sound outlet hole, and the first sound outlet hole is provided. The sound outlet and the second sound outlet are located on different sides of the casing;

The sound-generating unit includes a first sound-generating component for generating sound toward the first sound-outlet hole, a second sound-generating component for generating sound toward the second sound-emitting hole, and a sound-generating component sandwiched between the first sound-generating component and a magnetic bowl between the second sound-generating components, the magnetic bowl includes a first surface and a second surface disposed oppositely;

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, and the second sound-generating component includes a second vibration system and a second vibration system for driving the second vibration. The system vibrates and emits a second magnetic circuit system, the first magnetic circuit system is mounted on the first surface, and the second magnetic circuit system is mounted on the second surface.
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 outlet and the second sound outlet is provided on the first end panel through Alternatively, the second end panel and the other one are arranged through the enclosure, 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 speaker box according to claim 2, wherein the first sound outlet hole is arranged through the first end panel, and the second sound outlet hole is arranged through the enclosure plate;

The first magnetic circuit system has a first magnetic gap, and the first vibration system includes a first diaphragm arranged between the first magnetic circuit system and the first sound outlet, and a first diaphragm for driving the A first voice coil vibrating and producing sound with a first diaphragm, one end of the first voice coil is connected to the first diaphragm, and the other end is inserted in the first magnetic gap;

The second magnetic circuit system has a second magnetic gap, and the second vibration system includes a second diaphragm provided between the second magnetic circuit system and the second end panel and a second diaphragm for driving the The second diaphragm vibrates a second voice coil that emits sound, one end of the second voice coil is connected to the second diaphragm, and the other end is inserted into the second magnetic gap.
The speaker box according to claim 3, wherein the first magnetic circuit system comprises a first main magnet, a first auxiliary magnet, a first main pole core and a first auxiliary pole core, the first main magnet and the first sub-magnet are fixed on the first surface, and the first sub-magnet is arranged around the outer circumference of the first main magnet, the first sub-magnet and the first main magnet are The first magnetic gap is formed therebetween, the first main pole core is arranged on the side of the first main magnet facing the first diaphragm, and the first secondary pole core is arranged on the first auxiliary pole the side of the magnet facing the first diaphragm;

The second magnetic circuit system includes a second main magnet, a second auxiliary magnet, a second main pole core and a second auxiliary pole core, and both the second main magnet and the second auxiliary magnet are fixed on the first two surfaces, and the second sub-magnet is disposed around the outer circumference of the second main magnet, the second magnetic gap is formed between the second sub-magnet and the second main magnet; the second main magnet The pole core is arranged on the side of the second main magnet facing the second diaphragm, and the second secondary pole core is arranged on the side of the second auxiliary magnet facing the second diaphragm.
The speaker box according to claim 4, wherein the sound generating unit further comprises a first basin frame and a second basin frame, and the first basin frame comprises a first basin frame body having a first hollow inner hole , the first pot frame body is located between the first end panel and the magnetic bowl, the second pot frame includes a second pot frame body with a second hollow inner hole, the second pot frame the body is located between the second end panel and the magnetic bowl;

The first magnetic circuit system is arranged between the first surface and the first pot holder body, the second magnetic circuit system is arranged between the second surface and the second pot holder body, The first diaphragm is installed on the end of the first pot body close to the first end panel, and the first voice coil passes through the first hollow inner hole from the first diaphragm and extended and inserted in the first magnetic gap, the first secondary pole core abuts on the end of the first pot frame body close to the magnetic bowl; the second diaphragm is installed on the At the end of the second pot body close to the second end panel, the second voice coil passes through the second hollow inner hole from the second diaphragm and extends and is inserted into the second magnet In the gap, the second secondary pole core abuts against the end of the second pot body close to the magnetic bowl.
The loudspeaker enclosure of claim 5, wherein the first basin frame further comprises at least two first support posts extending from the first basin frame body toward the second end panel, the The second pot frame includes at least two second support posts extending from the second pot frame body toward the first end panel, and the magnetic bowl is provided with at least two second support posts extending from the first surface toward the first end panel. A first avoidance groove is formed through two surfaces, at least two second avoidance grooves respectively communicated with the first avoidance groove are formed through the first auxiliary magnet, and at least two avoidance grooves are formed through the first auxiliary pole core. two third avoidance grooves respectively communicating with the second avoidance grooves;

At least two fourth avoidance grooves respectively communicated with the first avoidance grooves are formed through the second auxiliary magnet, and at least two fourth avoidance grooves are formed through the second auxiliary pole core respectively. Connected fifth avoidance grooves, each of the first support columns respectively passes through one of the third avoidance grooves and one of the second avoidance grooves and extends into one of the first avoidance grooves, and each of the second avoidance grooves The support columns respectively pass through one of the fifth avoidance grooves and one of the fourth avoidance grooves, extend into one of the first avoidance grooves, and abut against one of the first support columns.
The speaker box according to claim 6, wherein the first secondary pole core is further provided with a first vent hole communicating with the first magnetic gap; the second secondary pole core is also penetrated A second vent hole communicated with the second magnetic gap is provided.
The loudspeaker box according to any one of claims 5 to 7, wherein the casing further comprises an annular support platform extending from the second end panel and protruding into the inner cavity, the first A sound outlet is arranged opposite to the annular support table, the sound generating unit is arranged between the annular support table and the first sound outlet, the second diaphragm, the annular support table and The second end panel encloses a first front sound cavity, and the annular support platform is provided with an opening for communicating the first front sound cavity and the second sound outlet.
The loudspeaker box according to claim 8, characterized in that there is a distance between the annular support platform and the enclosure plate, and the casing is further provided with a protrusion extending from the second end panel on the A sound guide channel in the inner cavity, the sound guide channel extends from the part of the annular support table where the opening is arranged to the part of the enclosure plate where the second sound outlet hole is arranged, and the sound guide channel is The sound passage is provided with a communication hole that communicates with the opening and the second sound outlet.
The loudspeaker box according to claim 8, wherein the annular support base comprises an annular support portion protruding from the second end panel and a ring support portion from the annular support portion toward the first 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 first 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 side faces form a card slot, the opening extends from the first inner side to the first outer side, and the second diaphragm and the second pot frame body are accommodated in the card slot, The edge of the second diaphragm is sandwiched between the support end surface and the second basin frame body.
A mobile terminal, characterized in that it comprises a device body, an annular seal and the speaker box according to any one of claims 1 to 10, wherein both the speaker box and the annular seal are installed in the device body , the device body includes a first sound-out panel with a first sound-outlet and a second sound-outlet with a second sound-outlet, the first sound-outlet communicates with the first sound-outlet , the second sound outlet is communicated with the second sound outlet; the annular seal is arranged between the first end panel and the first sound outlet panel and surrounds the first outlet The periphery of the sound hole.