CN215222402U - Mobile terminal - Google Patents

Abstract

The utility model provides a mobile terminal, establish including center and lid the back lid and the screen of the relative both sides of center, mobile terminal is still including fixing two at least speaker device on the center and spaced each other, speaker device is including the vibrating diaphragm that is used for the vibration sound production, the vibrating diaphragm with the screen interval forms speaker device's ante-chamber, the center with the interval forms the intercommunication a plurality ofly between the screen the passageway in ante-chamber, mobile terminal still including intercommunication outside air with the sound outlet of passageway. The utility model discloses can improve the sound pressure equilibrium of mobile terminal complete machine receiver mode and solve the speaker sound wave problem of leaking outward.

Description

Mobile terminal

[ technical field ] A method for producing a semiconductor device

The utility model belongs to the technical field of the sound-electricity conversion, especially, relate to a mobile terminal.

[ background of the invention ]

Nowadays, mobile terminals such as mobile phones and the like almost become the most important platforms for mass consumers to enjoy multimedia contents. Mobile terminals are becoming more powerful, wherein the quality of sound reproduction is also becoming better. In the related art, even on the basis of the original single loudspeaker, double loudspeakers can be upgraded and equipped, so that stereo sound can be realized in a play-out mode. However, the mobile terminal in the related art has a problem of unbalanced air pressure inside the speaker module, which causes unbalanced sound pressure of the mobile terminal in the receiver mode, and when the mobile terminal is equipped with two speakers, because the width of the auricle inside the ear is small and the auricle has a masking effect, when the mobile terminal is close to the ear and the sound outlet of the middle area of the two speakers is aligned to the cochlea, most of sound waves of the speakers at two sides leak; when the sound outlet close to one of the speakers is aligned with the cochlea, the sound waves of the speaker on the other side are all leaked.

[ Utility model ] content

An object of the utility model is to provide a mobile terminal can play the effect that improves complete machine receiver mode acoustic pressure equilibrium to can solve the speaker sound wave problem of leaking outward.

The technical scheme of the utility model as follows: the utility model provides a mobile terminal, mobile terminal includes that center and lid establish the back lid and the screen of the relative both sides of center, mobile terminal is still including fixing two at least speaker device on the center and spaced each other, speaker device is including the vibrating diaphragm that is used for the vibration sound production, the vibrating diaphragm with the screen interval forms speaker device's ante-chamber, the center with the interval forms the intercommunication between the screen is a plurality of the passageway of ante-chamber, mobile terminal still including intercommunication outside air with the sound outlet of passageway.

Furthermore, the sound outlet comprises a first sound outlet, the middle frame comprises a side wall which is connected with the rear cover and the screen, the channel is located at the side edge of the middle frame, which is close to the side wall, and the side edge of the screen, which is close to the side wall, and the edge of the middle frame form the first sound outlet at intervals.

Further, the center include with the first surface that the back lid interval set up and with the second surface that the first surface is relative, the first surface is towards keeping away from the sunken formation of back lid holds speaker device accepts the chamber, the center still include certainly the second surface is towards keeping away from the sunken first depressed part of screen direction, first depressed part with form between the screen with the gas circuit chamber that speaker device corresponds and communicate a plurality ofly the passageway in gas circuit chamber, seted up the intercommunication on the center accept the chamber with the first through-hole in gas circuit chamber, first through-hole with the gas circuit chamber constitutes jointly the antetheca of speaker device.

Furthermore, the sound outlet also comprises a second sound outlet arranged on the side wall, and the second sound outlet is communicated with the external air and the air path cavity.

Furthermore, the middle frame further comprises a second sunken part which is sunken from the second surface towards the direction far away from the screen and encloses the first sunken part, and a sealing element is clamped between the second sunken part and the screen.

Further, the sealing element comprises surrounding parts arranged on the periphery of the air path cavity and connecting parts connected among the surrounding parts, and the edges of the connecting parts are flush with the inner wall of the channel.

Further, the sealing element is sealing foam.

Furthermore, the bottom of the accommodating cavity is convexly provided with a positioning platform surrounding the periphery of the loudspeaker device, an annular step part surrounding the loudspeaker device is arranged on the edge of the inner side, close to the loudspeaker device, of the positioning platform, and the loudspeaker device is fixed on the annular step part.

Further, the space between the speaker device and the annular step part is sealed by foam or double-sided adhesive tape.

Furthermore, the first through hole upper cover is provided with screen cloth.

The beneficial effects of the utility model reside in that: the front cavities of the loudspeaker device of the mobile terminal of the utility model are communicated through the channel, thereby achieving the effect of improving the sound pressure balance of the whole telephone receiver mode; in addition, because the channel between the loudspeaker devices can conduct partial sound waves of the loudspeakers at two sides to the middle area, the sound wave superposed at the cochlea reaches the sound pressure loudness level of one loudspeaker, the problem of sound wave leakage of the loudspeaker can be solved, and the sound can be output normally no matter where the ear is placed.

[ description of the drawings ]

Fig. 1 is a schematic overall structure diagram of a mobile terminal according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a split structure of a mobile terminal according to an embodiment of the present invention;

fig. 3 is a schematic view of a partial split structure of the mobile terminal provided by the embodiment of the present invention after the screen is removed;

FIG. 4 is an enlarged schematic view of portion B of FIG. 3;

FIG. 5 is a schematic sectional view taken along the line A-A of FIG. 1;

FIG. 6 is an enlarged schematic view of portion A of FIG. 5;

fig. 7 is a schematic structural diagram of a part of the mobile terminal provided by the embodiment of the present invention after the rear cover is removed;

fig. 8 is a schematic view of a split structure of a speaker device according to an embodiment of the present invention.

[ detailed description ] embodiments

The present invention will be further described with reference to the accompanying drawings and embodiments.

Example (b):

referring to fig. 1 to 4, the present invention provides a mobile terminal, which includes a middle frame 20, a rear cover 10 and a screen 30 covering opposite sides of the middle frame 20, and at least two speaker devices 40 fixed on the middle frame 20 and spaced from each other, and referring to fig. 6 and 8, the speaker devices 40 include a vibrating diaphragm 4211 for vibrating sound, the vibrating diaphragm 4211 and the screen 30 form a front cavity 80 of the speaker device 40 at an interval, a channel 52 communicating with the front cavities 80 is formed between the middle frame 20 and the screen 30 at an interval, and the mobile terminal further includes a sound outlet 210 communicating with outside air and the channel 52.

In the mobile terminal of the present invention, the front chamber 80 of the speaker device 40 is communicated through the channel 52, so as to achieve the effect of improving the sound pressure balance of the receiver mode of the whole phone; in addition, because the passage 52 between the speaker devices 40 can conduct part of sound waves of the speakers at two sides to the middle area, the sound waves reach the sound pressure loudness level of one speaker at the cochlea after being superposed, the problem of sound wave leakage of the speakers can be solved, and the sound can be output normally no matter where the ears are placed.

Specifically, the middle frame 20 includes a first surface 22 spaced apart from the rear cover 10 and a second surface 23 opposite to the first surface 22, the first surface 22 is recessed towards a direction away from the rear cover 10 to form an accommodating cavity 200 for accommodating the speaker device 40, the middle frame 20 further includes a first recessed portion 25 recessed towards a direction away from the screen 30 from the second surface 23, an air path cavity 51 corresponding to the speaker device 40 and a channel 52 communicating with the air path cavities 51 are formed between the first recessed portion 25 and the screen 30, a first through hole 24 communicating the accommodating cavity 200 and the air path cavity 51 is formed in the middle frame 20, the first through hole 24 and the air path cavity 51 jointly form a front cavity 80 of the speaker device 40, and the interference of the assembly of other components of the whole machine and the independent development of the space of the front cavity 80 are avoided. The number of the speaker devices 40 is two in the present embodiment, and accordingly, the number of the air passage chambers 51 is also two. In other possible embodiments, the number of the speaker devices 40 may also be three, four, five or more, and the embodiment is not limited thereto.

In this embodiment, the middle frame 20 includes a side wall 21 connecting the rear cover 10 and the screen 30, the sound outlet 210 includes a second sound outlet 212 formed on the side wall of the side wall 21, and the second sound outlet 212 communicates with the external air and the air path cavity 51. In addition, as a preferred embodiment, the sound outlet 210 further includes a first sound outlet 211, the channel 52 is located at one side edge of the middle frame 20 close to the side wall 21, the side edge of the screen 30 close to the side wall 21 is spaced from the edge of the middle frame 20 to form the first sound outlet 211, the first sound outlet 211 communicates with the outside air and the channel 52, and sound is emitted through the first sound outlet 211, so that the listening range of the receiver can be widened.

Further, as shown in fig. 3 and 4, the middle frame 20 further includes a second recessed portion 26 recessed from the second surface 23 in a direction away from the screen 30 and enclosing the first recessed portion 25, the second recessed portion 26 is closer to the screen 30 than the first recessed portion 25, and a sealing member 60 is interposed between the second recessed portion 26 and the screen 30, so as to achieve a good sealing effect on the air path cavity 51 and the channel 52. The sealing member 60 of the present embodiment is a unitary structure, and the sealing member 60 includes a surrounding portion 61 surrounding the periphery of the air path cavity 51 and a connecting portion 62 connecting between the surrounding portions 61, and the edge of the connecting portion 62 is flush with the inner wall of the channel 52, so as to achieve better sealing of the channel 52. In other possible embodiments, a plurality of sealing members 60 may be provided to surround the air passage chamber 51 and the channel 52, respectively, and be independent from each other. Preferably, the seal 60 is a sealing foam.

The speaker device 40 includes a housing 41 having an accommodating space 300 and a speaker unit 42 disposed in the accommodating space 300, the speaker unit 42 includes a diaphragm 4211, and the housing 41 is opened with a second through hole 41211 communicating the accommodating space 300 and the first through hole 24. As shown in fig. 7, a positioning platform 221 surrounding the periphery of the speaker device 40 is convexly disposed at the bottom of the accommodating cavity 200, an annular step 222 surrounding the speaker device 40 is disposed at the inner side edge of the positioning platform 221 close to the speaker device 40, the speaker device 40 is fixed on the annular step 222, a height difference exists between the second through hole 41211 of the speaker device 40 and the bottom of the accommodating cavity 200, and a cavity is formed between the second through hole 41211 and the first through hole 24, so that the volume of the front cavity 80 can be widened, and the performance of the speaker device 40 can be improved. Optionally, the space between the speaker device 40 and the annular step portion 222 may be sealed by foam, and the speaker device 4 may also be bonded and fixed to the annular step portion 222 by a double-sided adhesive tape to achieve sealing. In addition, the mesh cloth 70 is covered on the first through hole 24, so that the acoustic resistance of the speaker device 40 can be better adjusted.

Specifically, the housing 41 includes an upper shell 411 and a lower shell 412 that are covered and enclosed to form the accommodating space 300, the lower shell 412 includes a bottom wall 4121 opposite to the upper shell 411 and a peripheral wall 4122 extending from the periphery of the bottom wall 4121 towards the upper shell 411, the diaphragm 4211 is close to the bottom wall 4121, and the bottom wall 4121 is provided with a second through hole 41211. The sounding monomer 42 further comprises a magnetic circuit system 422 for driving the vibrating diaphragm 4211 to vibrate and sound, the magnetic circuit system 422 comprises a magnetic yoke 4223 and a magnetic circuit component 4220 fixed on the magnetic yoke 4223, the magnetic yoke 4223 and the upper shell 411 form a rear cavity 90 at an interval, the upper shell 411 is provided with an opening 4111 for communicating the rear cavity 90 with the accommodating cavity 200, and because the vibrating diaphragm 4211 is close to the bottom wall 4121, the sounding monomer 42 is integrally close to the bottom wall 4121, the volume of the rear cavity 90 can be widened, and the performance of the speaker device 40 is improved.

As shown in fig. 8, the sound generating unit 42 of this embodiment further includes a vibration system 421 and a support 423 for fixing the vibration system 421 and the magnetic circuit system 422, the support 423 includes a frame 4231 and a fixing member 4232 spaced apart from the frame 4231, the vibration system 421 includes a vibrating diaphragm 4211, and the vibrating diaphragm 4211 is fixed on the frame 4231. The magnetic circuit assembly 4220 comprises a main magnetic steel 4221 and an auxiliary magnetic steel 4222, the main magnetic steel 4221 and the auxiliary magnetic steel 4222 are arranged above a magnetic yoke 4223, and the auxiliary magnetic steel 4222 has four and four auxiliary magnetic steels 4222 which are arranged around the four sides of the main magnetic steel 4221. The vibration system 421 further includes a voice coil 4212 for driving the vibration diaphragm 4211 to vibrate and sound, a dome 4213 disposed at an end of the vibration diaphragm 4211 away from the magnetic circuit system 422, a flexible circuit board 4214 fixed at a lower end of the fixing member 4232, a lower sound film 4215 fixed at a lower end of the flexible circuit board 4214, and an external circuit board 4216 connected with the flexible circuit board 4214, wherein the voice coil 4212 is surrounded by the fixing member 4232. When the voice coil 4212 is energized, the voice coil 4212 drives the diaphragm 4211 to vibrate and generate sound under the action of the magnetic field force of the magnetic circuit system 422.

To sum up, in the mobile terminal of the present invention, the front cavity 80 of the speaker device 40 is communicated through the channel 52, so as to achieve the effect of improving the sound pressure balance of the receiver mode of the whole phone; in addition, because the passage 52 between the speaker devices 40 can conduct part of sound waves of the speakers at two sides to the middle area, the sound waves reach the sound pressure loudness level of one speaker at the cochlea after being superposed, the problem of sound wave leakage of the speakers can be solved, and the sound can be output normally no matter where the ears are placed.

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

Claims (10)

1. The utility model provides a mobile terminal, includes that center and lid are established back lid and screen of the relative both sides of center, its characterized in that: the mobile terminal is characterized in that the mobile terminal further comprises at least two loudspeaker devices which are fixed on the middle frame and are spaced from each other, the loudspeaker devices comprise vibrating diaphragms used for vibrating and sounding, the vibrating diaphragms and the screens are spaced to form front cavities of the loudspeaker devices, the middle frame and the screens are spaced to form a plurality of channels communicated with each other, and the mobile terminal further comprises an external air communicating port and a sounding port of each channel.

2. The mobile terminal of claim 1, wherein: the sound outlet includes first sound outlet, the center is including connecting the back lid with the lateral wall of screen, the passageway is located being close to of center lateral wall one side edge, being close to of screen lateral wall one side edge with the marginal interval of center forms first sound outlet.

3. The mobile terminal of claim 2, wherein: the center include with the first surface that the back lid interval set up and with the second surface that the first surface is relative, the first surface is towards keeping away from the sunken formation of back lid holds speaker device accepts the chamber, the center still includes certainly the second surface is towards keeping away from the sunken first depressed part of screen direction, first depressed part with form between the screen with the gas circuit chamber that speaker device corresponds and communicate a plurality of the passageway in the gas circuit chamber, seted up the intercommunication on the center accept the chamber with the first through-hole in gas circuit chamber, first through-hole with the gas circuit chamber constitutes jointly speaker device's antechamber.

4. A mobile terminal according to claim 3, characterized in that: the sound outlet is characterized by further comprising a second sound outlet arranged on the side wall, and the second sound outlet is communicated with external air and the air path cavity.

5. A mobile terminal according to claim 3, characterized in that: the middle frame further comprises a second sunken part which is sunken towards the direction far away from the screen and encloses the first sunken part, and a sealing element is clamped between the second sunken part and the screen.

6. The mobile terminal of claim 5, wherein: the sealing member is including enclosing and establishing the peripheral surrounding portion of gas circuit chamber and connecting are in a plurality of connecting portion between the surrounding portion, the edge of connecting portion with the inner wall parallel and level of passageway.

7. The mobile terminal of claim 6, wherein: the sealing element is sealing foam.

8. A mobile terminal according to claim 3, characterized in that: the loudspeaker device is characterized in that a positioning table surrounding the periphery of the loudspeaker device is convexly arranged at the bottom of the accommodating cavity, an annular step part surrounding the loudspeaker device is arranged at the edge of the inner side of the positioning table close to the loudspeaker device, and the loudspeaker device is fixed on the annular step part.

9. The mobile terminal of claim 8, wherein: the loudspeaker device and the annular step part are sealed through foam or double-sided adhesive tape.

10. A mobile terminal according to claim 3, characterized in that: and the first through hole upper cover is provided with screen cloth.

Images