WO2021000123A1

WO2021000123A1 - Mobile terminal

Info

Publication number: WO2021000123A1
Application number: PCT/CN2019/094021
Authority: WO
Inventors: 刘忠原
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: 2019-06-29
Filing date: 2019-06-29
Publication date: 2021-01-07
Also published as: CN210781319U

Abstract

Provided in the present utility model is a mobile terminal, comprising a shell, a screen covering the shell and enclosing an accommodation space together with the shell, a loudspeaker box mounted in the accommodation space, and a driving electric motor mounted in the accommodation space, wherein the shell comprises a bottom wall, a side wall bent and extending from a peripheral edge of the bottom wall, and an opening penetrating the side wall; the screen covers and is supported on the side wall; the loudspeaker box is provided with a sound outlet for making a sound, and the sound outlet is arranged facing the screen; and the driving electric motor is connected to the loudspeaker box to drive the loudspeaker box to move and enable the sound outlet to extend out of the accommodation space or retract into the accommodation space via the opening. Compared with the related technology, the mobile terminal in the present utility model has good acoustic performance, and a full-screen design is achieved.

Description

Mobile terminal

Technical field

The utility model relates to the field of sound and electricity, in particular to a portable mobile terminal.

Background technique

With the advent of the mobile Internet era, the number of smart mobile devices continues to rise. Among many mobile devices, mobile phones are undoubtedly the most common and portable mobile terminal. At present, the functions of mobile phones are extremely diverse, one of which is high-quality music functions. Therefore, speaker boxes for playing sound are widely used in current mobile devices.

A related art mobile terminal includes a housing, a screen that is covered on the housing and encloses a housing space with the housing, and a speaker box installed in the housing space. In order to make the screen design as large as possible Even to achieve the full screen, in the related art, a narrow slit is opened on the screen, and the sound hole of the speaker box is connected with the narrow slit, thereby forming a narrow slit sound output structure.

However, in the above sound production structure, since the narrow slit is used as the sound production structure of the mobile terminal, its size is too small, the speaker box is prone to piano noise under large amplitude, and one end of the whole screen It is still occupied and full screen is not really realized.

Therefore, it is necessary to provide a new mobile terminal to solve the above technical problems.

technical problem

The purpose of the utility model is to provide a mobile terminal with good acoustic performance and full screen.

Technical solutions

In order to achieve the above object, the present invention provides a mobile terminal, which includes a housing, a screen that is covered on the housing and encloses a housing space with the housing, a speaker box installed in the housing space, and a mounting For the drive motor in the containing space, the housing includes a bottom wall, a side wall bent and extended from the periphery of the bottom wall, and an opening provided through the side wall, and the screen cover is supported on the side wall The speaker box is provided with a sound outlet for sound, the sound outlet is opened toward the screen; the drive motor is connected with the speaker box to drive the speaker box to move, and make the output The sound mouth extends out of the containing space or retracts into the containing space through the opening.

Preferably, the housing further includes a sound chute extending from the bottom wall and formed in the accommodating space, the sound chute is arranged directly opposite to the opening, and the speaker box is accommodated in the In the sound chute, the driving motor drives the speaker box to slide along the axial direction of the sound chute.

Preferably, when the sound outlet is retracted into the accommodating space, the sound outlet is completely accommodated in the sound chute and the side of the speaker box close to the opening is flush with the opening .

Preferably, the sound emission direction of the sound outlet is perpendicular to the screen.

Preferably, the driving motor is a stepping motor.

Preferably, the speaker box further includes a damping member glued and fixed to the upper cover, and the damping member completely covers the sound outlet.

Preferably, the orthographic projection of the sound outlet along the vibration direction of the diaphragm to the direction of the sound-producing monomer falls on the diaphragm.

Preferably, the speaker box includes a lower cover, an upper cover that encloses a box space together with the lower cover, a sound outlet penetrating the upper cover, and a sounding monomer housed in the box space; The sound-producing monomer includes a vibrating diaphragm, the diaphragm and the upper cover jointly enclose a front cavity, the diaphragm, the upper cover, and the lower cover jointly enclose a rear cavity, and the sound The opening connects the front cavity with the outside to form a front sounding structure.

Beneficial effect

Compared with the related art, in the mobile terminal of the present invention, the sound outlet of the speaker box faces the screen, and the housing is provided with the opening provided through the side wall, and the drive motor The speaker box is driven to move to drive the sound outlet to extend out of the containing space or retract into the containing space through the opening, thereby realizing a full-screen structure while realizing a sound-producing structure on the side of the screen without being affected by the whole The size of the narrow slot of the machine improves the stereo effect while avoiding the problem of stereo piano noise caused by the narrow slot, and the overall performance is better.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some implementations of the present utility model. For example, for those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings, among which:

Figure 1 is a schematic diagram of the three-dimensional structure of the mobile terminal of the present invention;

Figure 2 is an exploded view of a part of the three-dimensional structure of the mobile terminal of the present invention;

Figure 3 is a cross-sectional view taken along line A-A in Figure 1;

Figure 4 is an enlarged view of part A shown in Figure 3;

Figure 5 is a schematic diagram of another state of Figure 4;

Figure 6 is an exploded view of a part of the three-dimensional structure of the speaker box of the mobile terminal of the present invention;

Fig. 7 is a curve diagram of the sound effect of the mobile terminal of the present invention and the related art narrow-slot sounding mobile terminal.

Embodiments of the invention

The following describes the technical solutions in the embodiments of the present utility model clearly and completely in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, not all of them. Examples. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

Please also refer to FIGS. 1-6. The present invention provides a mobile terminal 100, which includes a housing 1, a screen 2, a speaker box 3, and a driving motor 4. The screen 2 is arranged on the housing 1 and encloses a receiving space 10 together with the housing 1.

Specifically, the housing 1 includes a bottom wall 11, a side wall 12 extending from the periphery of the bottom wall 11, an opening 13 provided through the side wall 12, and an opening 13 extending from the bottom wall 11 and formed in the bottom wall 11 The sounding slide 14 in the containing space 10.

The screen 2 is covered and supported on the side wall 12, and only a part of the structure of the screen 2 is shown in FIG. 2.

The speaker box 3 is installed in the receiving space 10. Specifically, the speaker box 3 includes a lower cover 31, an upper cover 32, a sound outlet 33, a sounding monomer 34 and a damping member 35.

The lower cover 31 and the upper cover 32 jointly enclose a box space 30.

The sound outlet 33 penetrates the upper cover 32. The sound outlet 33 is used to transmit sound to the outside world. In this embodiment, the sound outlet 33 is opened toward the screen 2 to form a sound structure on the side of the screen.

More preferably, in this embodiment, the sound output direction of the sound outlet 33 is perpendicular to the screen 2.

The sounding monomer 34 is contained in the box space 30. The vocal unit 34 is used for vibration and sound.

The sound emitting monomer 34 and the upper cover 32 jointly enclose a front cavity 301, and the front cavity 301 is used to improve the high frequency acoustic performance of the speaker box 3. The sound outlet 33 connects the front cavity 301 with the outside world to form a front sounding structure. This sounding structure makes the mobile terminal 100 no longer limited by the size of the slits of the whole machine, which improves the stereo effect and avoids the slits. The overall performance of stereo piano sound noise is better.

The sound emitting unit 34, the upper cover 32 and the lower cover 31 jointly enclose a rear cavity 302, and the rear cavity 302 is used to improve the low frequency acoustic performance of the speaker box 3. The front cavity 301 and the rear cavity 302 jointly constitute the box space 30.

Specifically, the sound-emitting unit 34 includes a diaphragm 341 for vibrating and sounding. The diaphragm 341 and the upper cover 32 jointly form the front cavity 301; the diaphragm 341, the upper cover 32 and the lower cover 31 jointly enclose the rear cavity 302. The orthographic projection of the sound outlet 33 along the vibration direction of the diaphragm 341 toward the direction of the sound emitting unit 34 falls on the diaphragm 341. The vibrating sound of the diaphragm 341 is directly transmitted to the outside through the sound outlet 33 to form a front sounding structure, which improves the stereo effect and has better overall performance.

The damping member 35 is glued and fixed to the damping member 35 of the upper cover 32, and the damping member 35 completely covers the sound outlet 33. The damping member 35 not only causes the vibration and sound of the sound emitting unit 34 to be transmitted to the outside, but also prevents foreign matter or water from directly entering the front cavity 301, which is beneficial to improve the reliability of the speaker box 3.

The driving motor 4 is installed in the receiving space 10. In this embodiment, the driving motor 5 is a stepping motor, which has high sensitivity and good controllability.

The driving motor 4 is connected with the speaker box 3 to drive the speaker box 3 to move, and make the sound outlet 33 extend out of the receiving space 10 through the opening 13 or retract to the In the containment space 10. More preferably, in this embodiment, the driving motor 4 drives the speaker box 3 to move linearly, which is more conducive to making the mobile terminal 100 compact in structure and small in size, which is conducive to miniaturization.

That is, when the speaker box 3 is working, the driving motor 4 drives the speaker box 3 to move and drives the sound outlet 33 to extend out of the containing space 10, that is, the sound outlet 33 extends out of the accommodating space 10 to realize sound, and the sound outlet 33 is set toward the screen 2, that is, the sound structure on the side of the screen is realized, and there is no need to open a narrow slit on the screen, that is, the sound outlet 33 33 is not restricted by the narrow slits of the whole screen, and realizes a full-screen structure. Please refer to FIG. 7, curve a is the acoustic performance curve diagram of the mobile terminal of the present invention, and curve b is the acoustic performance curve diagram of the prior art mobile terminal. It can be seen from FIG. 7 that the acoustic performance of the mobile terminal 100 with sound on the screen side of the full-screen structure of the present invention is stable.

When the speaker box 3 is not working, the drive motor 4 drives the speaker box 3 to move and drives the sound outlet 33 to retract into the containing space 10, the damping member 35 can abut against The screen 2, that is, at this time, the upper cover 32 and the lower cover 31 abut against the screen 2 and the bottom wall 11 of the housing 1, respectively. This structural design allows the speaker box 3 to be integrated with the camera and other devices and realize the full screen structure of the whole machine.

The sound chute 14 is mainly used as a guide structure for the movement of the speaker box 3 to improve the reliability of its extension and retraction. In this embodiment, the sounding slide 14 and the opening 13 are arranged directly opposite, the speaker box 3 is housed in the sounding slide 14, and the driving motor 4 drives the speaker box 3 along the The axial sliding of the sound slide 14 is described to improve stability.

More preferably, when the sound outlet 33 is retracted into the accommodating space 10, the sound outlet 33 is completely contained in the sound chute 14 and the speaker box 3 is close to the opening 13 One side is flush with the opening 13, which improves the overall aesthetics of the mobile terminal 100.

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

Claims

A mobile terminal includes a housing, a screen that is covered on the housing and encloses a housing space with the housing, and a speaker box installed in the housing space, and the speaker box is provided with an output for sound The sound port is characterized in that the housing includes a bottom wall, a side wall bent and extended from the periphery of the bottom wall, and an opening provided through the side wall, and the screen cover is supported on the side wall; The sound outlet is opened toward the screen; the mobile terminal further includes a drive motor installed in the accommodating space, the drive motor is connected with the speaker box to drive the speaker box to move, and make the output The sound mouth extends out of the containing space or retracts into the containing space through the opening.
The mobile terminal according to claim 1, wherein the housing further comprises a sound chute extending from the bottom wall and formed in the receiving space, and the sound chute is aligned with the opening. For the arrangement, the speaker box is accommodated in the sound chute, and the drive motor drives the speaker box to slide along the axial direction of the sound chute.
The mobile terminal of claim 2, wherein when the sound outlet is retracted into the accommodating space, the sound outlet is completely contained in the sound chute and the speaker box is close to the sound outlet. One side of the opening is flush with the opening.
The mobile terminal according to claim 1, wherein the sound emission direction of the sound outlet is perpendicular to the screen.
The mobile terminal according to claim 1, wherein the driving motor is a stepping motor.
The mobile terminal according to claim 1, wherein the speaker box further comprises a damping member glued and fixed to the upper cover, and the damping member completely covers the sound outlet.
The mobile terminal according to claim 1, wherein the orthographic projection of the sound outlet along the vibration direction of the diaphragm toward the direction of the sound-producing monomer falls on the diaphragm.
The mobile terminal according to claim 1, wherein the speaker box includes a lower cover, an upper cover that encloses a box space together with the lower cover, a sound outlet penetrating the upper cover, and a housing The sound-producing monomer in the box space; the sound-producing monomer includes a vibrating and sounding diaphragm, the diaphragm and the upper cover jointly enclose a front cavity, the diaphragm, the upper cover and the lower The cover jointly encloses a rear cavity, and the sound outlet communicates the front cavity with the outside to form a front sounding structure.