CN209982722U

CN209982722U - Mobile terminal

Info

Publication number: CN209982722U
Application number: CN201920982167.0U
Authority: CN
Inventors: 陈召宪; 吴融融; 毛路斌
Original assignee: Ruisheng Technology Nanjing Co Ltd
Current assignee: Ruisheng Technology Nanjing Co Ltd
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-01-21
Anticipated expiration: 2029-06-26

Abstract

The utility model provides a mobile terminal, which comprises a shell, a screen and an electromagnetic driver, wherein the screen is covered on the shell and forms an accommodating space together with the shell, and the electromagnetic driver is arranged in the accommodating space; the electromagnetic driver comprises a stator part fixed on the shell, a vibrator part fixed on the screen and an elastic supporting part connecting the stator part and the vibrator part, and the stator part and the vibrator part are relatively spaced; the stator part comprises a stator plate fixed on the shell and an electromagnet fixed on the stator plate, the oscillator part comprises an oscillator plate fixed on the screen and magnetic steel fixed on the oscillator plate, the stator plate and the oscillator plate are spaced, the magnetic steel comprises at least two magnets which are spaced from each other, and the magnetic steel is arranged around the electromagnet and spaced from the electromagnet; one end of the elastic support part is connected to the stator plate, and the end of the elastic support part, which is far away from the stator plate, is connected to the magnetic steel or the vibrator plate to provide elastic support for the vibrator part along the vibration direction of the vibrator part. Compared with the prior art, the utility model discloses a mobile terminal's screen sound production performance is good, and the reliability is high, simple structure, low in production cost.

Description

Mobile terminal

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electroacoustic conversion field especially relates to a portable mobile terminal.

[ background of the invention ]

With the advent of the mobile internet age, the number of smart mobile devices is increasing. Among the mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal. At present, the functions of mobile phones are very diverse, one of them is a high-quality music function, and with the higher requirements of people on the operation space and the acoustic performance of the mobile phone screen, the mobile phone with a screen sounding structure is in a trend.

The mobile terminal in the related art comprises a shell, a screen and a driver, wherein the screen is covered on the shell and forms an accommodating space together with the shell, and the driver is installed in the accommodating space and used for driving the screen to vibrate and sound.

However, in the related art mobile terminal, the driver is generally of a piezoelectric or moving coil type structure, the piezoelectric driver requires a large voltage, the cost of the mobile terminal is increased to adjust the battery arrangement, and the driving force of the moving coil type driving device is limited, so that the sound emission performance of the mobile terminal is limited.

Therefore, there is a need to provide a new mobile terminal to solve the above technical problems.

[ Utility model ] content

An object of the utility model is to provide a mobile terminal that screen sound production performance is good, the reliability is high and with low costs.

In order to achieve the above object, the present invention provides a mobile terminal, which includes a housing, a screen covering the housing and enclosing an accommodating space together with the housing, and an electromagnetic driver installed in the accommodating space for driving the screen to vibrate and generate sound; the electromagnetic driver comprises a stator part fixed on the shell, a vibrator part fixed on the screen and an elastic supporting part connecting the stator part and the vibrator part, and the stator part and the vibrator part are arranged at intervals; the stator part comprises a stator plate fixed on the shell and an electromagnet fixed on the stator plate, the oscillator part comprises an oscillator plate attached to and fixed on the screen and magnetic steel fixed on the oscillator plate, the stator plate and the oscillator plate are arranged in an aligned and spaced mode, the magnetic steel comprises at least two magnetic steels arranged at intervals, and the magnetic steel is arranged around the electromagnet and spaced from the electromagnet; one end of the elastic supporting part is connected to the stator plate, and the end of the elastic supporting part, which is far away from the stator plate, is connected to the magnetic steel or the vibrator plate so as to provide elastic support for the vibrator part along the vibration direction of the vibrator part.

Preferably, the elastic support part comprises a support column fixed on the stator plate and an elastic support frame fixedly supported at one end of the support column far away from the stator plate; the supporting columns are arranged at intervals, the elastic supporting frames are of annular plane structures and are arranged around the electromagnets, and the planes of the elastic supporting frames are perpendicular to the vibration direction of the vibrator part; the elastic support frame comprises fixing portions fixed on the support column and connecting elastic arms connected with the fixing portions, each magnetic steel support is fixed on one of the fixing portions and one side, close to the vibrator plate, of each connecting elastic arm.

Preferably, the stator plate is rectangular, the number of the support columns is four, and the four support columns are arranged at four corners of the stator plate; the four fixing parts are respectively fixed on the four support columns; the connecting elastic arm and the magnetic steel comprise four magnetic steels, and the four magnetic steels are respectively fixed on the four connecting elastic arms.

Preferably, the elastic support portion includes at least two elastic members, the two elastic members are disposed at two opposite sides of the electromagnet at intervals, the elastic members are in a planar structure, a plane where the elastic members are located is parallel to a vibration direction of the vibrator portion, and each elastic member is connected to the stator plate and the vibrator plate.

Preferably, the elastic element comprises a first fixing arm fixed on the stator plate, a second fixing arm fixed on the oscillator plate, and an elastic arm connected with the first fixing arm and the second fixing arm.

Preferably, the first fixing arm is fixed to the side surface of the stator plate, and the second fixing arm is fixed to the side surface of the oscillator plate.

Preferably, the first fixing arm and the second fixing arm are parallel to the stator plate or the oscillator plate, the elastic arm is obliquely arranged, and two ends of the elastic arm are connected to two ends of the first fixing arm and two ends of the second fixing arm, which are different from each other.

Preferably, the casing includes drain pan and center, the screen lid establish be fixed in the center, the screen with the drain pan is located respectively the relative both sides of center, electromagnetic drive is located between the center with between the screen just the stator board is fixed in the center.

Compared with the prior art, in the mobile terminal of the present invention, the driver for driving the screen to sound is an electromagnetic driver, the vibrator portion is fixed on the screen, the stator portion is fixed on the housing, the stator portion comprises a stator plate and an electromagnet fixed on the housing, the vibrator portion comprises a vibrator plate and a magnetic steel fixed on the screen, the stator plate and the vibrator plate are arranged in a positive-to-positive interval, the electromagnet and the magnetic steel are respectively fixed on the stator plate and the vibrator plate, the magnetic steel comprises at least two magnets arranged in an interval, the magnetic steel surrounds the electromagnet and is arranged in an interval with the electromagnet, so as to form an electromagnetic driving force to drive the vibrator portion to drive the screen to sound, the electromagnetic driver with the above structure can provide a larger driving force, so that the screen vibration has a better sound-producing effect, meanwhile, compared with the moving coil driver in the related art, the electromagnetic driver of the utility model omits the structures such as a vibrating diaphragm, has simple structure and saves the production cost; in addition, the elastic supporting part is connected with the stator part and the vibrator part, and the electromagnetic driver forms an integral structure through the arrangement of the elastic supporting part, so that the assembly reliability of the electromagnetic driver is effectively improved, and the reliability of the mobile terminal is high.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is a schematic perspective view of the mobile terminal of the present invention;

fig. 2 is an exploded schematic view of the three-dimensional structure of the mobile terminal of the present invention;

fig. 3 is an exploded perspective view of the electromagnetic driving device of the mobile terminal of the present invention;

FIG. 4 is a sectional view taken along line A-A of FIG. 1;

FIG. 5 is an enlarged view of the portion B of FIG. 4;

fig. 6 is an exploded perspective view of another embodiment of the electromagnetic driving apparatus of the mobile terminal according to the present invention;

fig. 7 is a cross-sectional view of another embodiment of the mobile terminal of the present invention;

fig. 8 is an enlarged view of a portion indicated by C in fig. 7.

[ detailed description ] embodiments

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

Implementation mode one

Referring to fig. 1-5, the present invention provides a mobile terminal 100, which includes a housing 1, a screen 2 and an electromagnetic driver 3.

The screen 2 is covered on the shell 1 and forms an accommodating space 10 together with the shell 1.

In the present embodiment, the housing 1 includes a bottom case 11 and a middle frame 12. The screen 2 is covered and fixed on the middle frame 12, the screen 2 and the bottom shell 11 are respectively located on two opposite sides of the middle frame 12, the electromagnetic driver 3 is located between the middle frame 12 and the screen 2, and the electromagnetic driver 3 is fixed on the middle frame 12.

The electromagnetic driver 3 is installed in the accommodating space 10 to drive the screen 2 to vibrate and sound.

Specifically, the electromagnetic actuator 3 includes a stator portion 31, a vibrator portion 32, and an elastic support portion 33; the stator 31 is fixed to the housing 1, the vibrator part 32 is fixed to the screen 2, the stator 31 and the vibrator part 32 are spaced apart from each other, and the elastic support part 33 connects the stator 31 and the vibrator part 32.

In the present embodiment, the electromagnetic actuator 3 has a cylindrical or rectangular-cube shape as a whole. Of course, the shape thereof is not limited thereto.

Further, the stator portion 31 includes a stator plate 311 and an electromagnet 312, and the vibrator portion 32 includes a vibrator plate 321 and magnetic steel 322.

The stator plate 311 is fixed to the housing 1. For example, the stator plate 311 is fixed to the middle frame 12 or the bottom case 11. Since the amplitude of the screen 2 is small when the vibration is generated, the thickness of the electromagnetic driver 3 can be made thin and the size can be made smaller, and therefore, it is preferable to fix the stator plate 311 to the center frame 12, that is, the electromagnetic driver 3 is located between the center frame 12 and the screen 2.

The vibrator plate 321 is attached to and fixed on the screen 2 and is opposite to the stator plate 311 at an interval; the electromagnet 312 is fixed to the stator plate 311, and the magnetic steel 322 is fixed to the vibrator plate 321.

It is worth mentioning that, the quantity of magnet steel 322 is unlimited, for the symmetry of guaranteeing the vibration, improves electromagnetic drive 3's whole vibration effect, magnet steel 322 sets up two at least and separates the setting each other, magnet steel 322 encircles the setting of electro-magnet 312 and with electro-magnet 312 separates each other, and both form the magnetic gap jointly. The specific number and position of the magnetic steels 322 can be specifically set according to the actual design requirement.

In the present embodiment, the electromagnet 312, i.e., the coil 3121, is configured to surround the core 3122.

Preferably, the stator plate 311 and the vibrator plate 321 are made of a magnetic conductive material, and are used for magnetic conduction to reduce the diffusion of magnetic lines of force and increase the overall driving force strength, so that the screen vibration sound production performance of the mobile terminal 100 is improved.

In the structure, magnet steel 322 with form electromagnetic drive power between the electro-magnet 312, with the drive sub-portion 32 that shakes drives screen 2 vibration sound production, this electromagnetic drive ware 3 can do screen 2's vibration provides bigger drive power to make screen 2 vibrate the effect of sound production better, simultaneously, for the moving coil driver of correlation technique, the utility model provides an electromagnetic drive ware 3 has saved vibrating diaphragm isotructure, and simple structure has saved manufacturing cost.

In the present embodiment, one end of the elastic support portion 33 is fixed to the stator plate 311, and one end of the elastic support portion 33, which is far away from the stator plate 311, is connected to the magnetic steel 322 and provides elastic support for the vibrator portion 32 along the vibration direction thereof.

Specifically, the elastic support portion 33 includes a supporting column 331 fixed to the stator plate 311, and an elastic support frame 332 fixedly supported at one end of the supporting column 331 far away from the stator plate 311.

It should be noted that the elastic support frame 332 is in a ring-shaped planar structure and is disposed around the electromagnet 312, and a plane of the elastic support frame 332 is perpendicular to the vibration direction of the vibrator portion 32.

Further, the elastic support frame 332 includes a fixing portion 3321 fixed on the supporting column 331 and a connecting elastic arm 3322 connecting two adjacent fixing portions 3321, and each of the magnetic steels 322 is supported and fixed on one side of the connecting elastic arm 3322 close to the vibrator plate 321.

Furthermore, the number of the supporting columns 331 is not limited, and in order to provide more reliable support for the elastic supporting frame 332, the supporting columns 331 include a plurality of supporting columns 331 and are spaced apart from each other.

For example, as an optional solution of the first embodiment, taking the stator plate 311 as a rectangle as an example for explanation, the number of the supporting columns 331 includes four, the four supporting columns 331 are disposed at four corners of the stator plate 311, and the number of the fixing portions 3321 is corresponding to the number of the supporting columns 331, so that the number of the fixing portions 3321 also includes four, and the four fixing portions 3321 are respectively fixed to the four supporting columns 331, so that the whole of the elastic supporting portion 33 is a symmetrical structure, thereby ensuring the reliability of the vibration of the elastic supporting portion 33, effectively optimizing the vibration effect of the electromagnetic driver 3, and further making the acoustic performance of the mobile terminal 100 better; in addition, for further improvement vibration performance, magnet steel 322 with it all includes four, and four to connect bullet arm 3322 magnet steel 322 is fixed in four respectively connect on the bullet arm 3322, four magnet steel 322 encircles the electro-magnet 312 sets up, thereby makes the symmetry of 3 vibrations of electromagnetic drive is better to further optimize the vibration effect, make the effect of 2 vibrations vocalizations of screen better.

In the above structure, the electromagnetic actuator 3 is integrated by the elastic support portion 33, so that the assembly reliability of the electromagnetic actuator 3 is effectively improved, and the reliability of the mobile terminal 100 is high.

Second embodiment

The structure of the second embodiment differs from that of the first embodiment only in the specific structure and connection relationship of the elastic support portions, and the same portions of the second embodiment and the first embodiment are not repeated herein, and the following description mainly describes different portions, that is, the elastic support portion 33' of the second embodiment is expanded:

referring to fig. 6 to 8, one end of the elastic support portion 33' is fixed to the stator plate 311, and an end of the elastic support portion away from the stator plate 311 is connected to the vibrator plate 321 and provides elastic support for the vibrator portion 32 along the vibration direction thereof.

The elastic support portion 33 ' includes elastic members 330 ', and the number of the elastic members 330 ' is not limited, and may be specifically set according to the actual design requirement.

For example, in the present embodiment, the elastic member 330 ' includes at least two elastic members 330 ', and the two elastic members 330 ' are spaced apart from each other on opposite sides of the electromagnet 312.

The elastic member 330 'is of a planar structure, the plane of the elastic member 330' is parallel to the vibration direction of the vibrator part 32, and each of the elastic members is connected to the stator plate 311 and the vibrator plate 321.

Further, the elastic member 330 'includes a first fixing arm 3301' fixed to the stator plate 311, a second fixing arm 3302 'fixed to the vibrator plate 321, and an elastic arm 3303' connecting the first fixing arm 3301 'and the second fixing arm 3302'.

Furthermore, the first fixing arm 3301 ' and the second fixing arm 3302 ' are both disposed parallel to the stator plate 311 or the vibrator plate 321, the elastic arm 3303 ' is disposed obliquely, and both ends of the elastic arm 3303 ' are respectively connected to opposite ends of the first fixing arm 3301 ' and the second fixing arm 3302 ', so that the elastic member 330 ' has a Z-shaped structure.

Preferably, the two elastic members 330 ' are respectively disposed at the side of the electromagnetic driver 3 ', that is, the first fixing arm 3301 ' of each elastic member 330 ' is fixed at the side of the stator plate 311, and the second fixing arm 3302 ' is fixed at the side of the oscillator plate 321, so that the elastic member 330 ' does not occupy the internal space of the electromagnetic driver 3 ', the thickness design of the electromagnetic driver 3 ' is released, a thinner structure is realized, and the overall size of the electromagnetic driver 3 ' is effectively reduced. It is of course also possible to arrange the spring inside the electromagnetic actuator, i.e. between the stator plate and the vibrator plate.

In the above structure, the electromagnetic actuator 3 is integrated by the elastic support portion 33 ', so that the assembly reliability of the electromagnetic actuator 3' is effectively improved, and the reliability of the mobile terminal 100 is high.

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

Claims

1. A mobile terminal comprises a shell, a screen and an electromagnetic driver, wherein the screen is covered on the shell and forms an accommodating space together with the shell, the electromagnetic driver is arranged in the accommodating space and used for driving the screen to vibrate and sound, the electromagnetic driver is characterized by comprising a stator part fixed on the shell, a vibrator part fixed on the screen and an elastic supporting part connecting the stator part and the vibrator part, and the stator part and the vibrator part are arranged at intervals; the stator part comprises a stator plate fixed on the shell and an electromagnet fixed on the stator plate, the oscillator part comprises an oscillator plate attached to and fixed on the screen and magnetic steel fixed on the oscillator plate, the stator plate and the oscillator plate are arranged in an aligned and spaced mode, the magnetic steel comprises at least two magnetic steels arranged at intervals, and the magnetic steel is arranged around the electromagnet and spaced from the electromagnet; one end of the elastic supporting part is connected to the stator plate, and the end of the elastic supporting part, which is far away from the stator plate, is connected to the magnetic steel or the vibrator plate so as to provide elastic support for the vibrator part along the vibration direction of the vibrator part.

2. The mobile terminal of claim 1, wherein the elastic support portion comprises a support column fixed to the stator plate and an elastic support frame fixedly supported at an end of the support column away from the stator plate; the supporting columns are arranged at intervals, the elastic supporting frames are of annular plane structures and are arranged around the electromagnets, and the planes of the elastic supporting frames are perpendicular to the vibration direction of the vibrator part; the elastic support frame comprises fixing portions fixed on the support column and connecting elastic arms connected with the fixing portions, each magnetic steel support is fixed on one of the fixing portions and one side, close to the vibrator plate, of each connecting elastic arm.

3. The mobile terminal of claim 2, wherein the stator plate is rectangular, and the number of the support posts comprises four, and four support posts are disposed at four corners of the stator plate; the four fixing parts are respectively fixed on the four support columns; the connecting elastic arm and the magnetic steel comprise four magnetic steels, and the four magnetic steels are respectively fixed on the four connecting elastic arms.

4. The mobile terminal of claim 1, wherein the elastic support portion comprises at least two elastic members, the two elastic members are disposed at opposite sides of the electromagnet at intervals, the elastic members are in a planar structure, a plane where the elastic members are located is parallel to a vibration direction of the vibrator portion, and each elastic member is connected to the stator board and the vibrator board.

5. The mobile terminal of claim 4, wherein the elastic member comprises a first fixing arm fixed to the stator plate, a second fixing arm fixed to the vibrator plate, and an elastic arm connecting the first fixing arm and the second fixing arm.

6. The mobile terminal of claim 5, wherein the first securing arm is secured to the stator plate side and the second securing arm is secured to the vibrator plate side.

7. The mobile terminal of claim 6, wherein the first fixing arm and the second fixing arm are both disposed parallel to the stator plate or the vibrator plate, the elastic arm is disposed obliquely, and two ends of the elastic arm are respectively connected to two ends of different sides of the first fixing arm and the second fixing arm.

8. The mobile terminal of claim 1, wherein the housing comprises a bottom shell and a middle frame, the screen cover is fixed to the middle frame, the screen and the bottom shell are respectively located at two opposite sides of the middle frame, the electromagnetic driver is located between the middle frame and the screen, and the stator plate is fixed to the middle frame.