CN209982723U

CN209982723U - Driver and mobile terminal

Info

Publication number: CN209982723U
Application number: CN201921024511.1U
Authority: CN
Inventors: 王尧; 汤赟; 马杰; 崔志勇; 刘柯佳
Original assignee: Ruisheng Technology Nanjing Co Ltd
Current assignee: AAC Technologies Holdings Nanjing Co Ltd; Ruisheng Technology Nanjing Co Ltd
Priority date: 2019-06-29
Filing date: 2019-07-03
Publication date: 2020-01-21
Anticipated expiration: 2029-07-03
Also published as: WO2021000121A1

Abstract

The utility model provides a driver, it includes the support, around locating the coil in the support outside, be fixed in the inboard iron core of support and fold and establish and be fixed in magnetostrictive strain gauge on the iron core, the coil circular telegram makes magnetostrictive strain gauge follows telescopic deformation takes place for the axial of coil. The utility model also provides an application the mobile terminal of driver compares with correlation technique, the utility model discloses a driver and mobile terminal simple structure, the assembly of easily producing has reduced assembly manufacturing cost.

Description

Driver and mobile terminal

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electroacoustic conversion field especially relates to a driver and 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 an exciter, wherein the screen is covered on the shell and forms an accommodating space together with the shell, and the exciter is installed in the accommodating space and used for driving the screen to vibrate and sound.

However, in the related art mobile terminal, the exciter includes a mover assembly, a stator assembly and the like, the structure is relatively complicated, and the assembly is cumbersome, which results in an increase in production cost.

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 simple structure, easily equipment, low in production cost's driver and mobile terminal.

In order to achieve the above object, the utility model provides an actuator, it includes the support, around locating the coil in the support outside, be fixed in the inboard iron core of support and fold establish and be fixed in magnetostrictive strain gauge on the iron core, the coil circular telegram makes magnetostrictive strain gauge follows the axial of coil takes place flexible deformation.

Preferably, the bracket comprises a bottom plate and a surrounding wall which is extended from the bottom plate in a protruding manner, the cross section of the surrounding wall is in a hollow annular shape, an accommodating space is formed by the surrounding wall and the bottom plate in a surrounding manner, the coil is arranged on the outer side of the surrounding wall in a surrounding manner, the iron core is positioned in the accommodating space and fixed on the bottom plate, and at least part of the magnetostrictive strain gauge is exposed in the accommodating space.

Preferably, the iron core is fixedly connected with the surrounding wall, and the magnetostrictive strain gauge is fixedly connected with the surrounding wall.

Preferably, the cross section of the surrounding wall is circular.

The utility model also provides a mobile terminal, which comprises a shell, a screen which is covered on the shell and forms an accommodating space together with the shell, and the driver which is arranged in the accommodating space and provided by the utility model; the support is fixed in the shell and arranged at intervals with the screen, the magnetostrictive strain gauge is fixedly connected with the screen, and the coil is electrified to enable the magnetostrictive strain gauge to be subjected to telescopic deformation along the axial direction of the coil so as to drive the screen to vibrate and sound.

Preferably, the drivers are at least two, and the two drivers are symmetrically distributed about the short axis of the screen.

Compared with the prior art, the utility model discloses an among the driver and the mobile terminal who utilizes this driver, with the coil around locating the support outside, be fixed in iron core and magnetostrictive strain gauge respectively the support is inboard, make after the coil circular telegram the magnetic field that the iron core formed changes, thereby makes the axial dimension of magnetostrictive strain gauge takes place flexible deformation along with the change in magnetic field and quick response, works as the driver respectively with the screen reaches after the casing is connected, the magnetostrictive strain gauge passes through flexible deformation in order to drive the screen with the casing vibrates the sound production. The driver is simple in structure, simple and convenient to assemble when applied to the mobile terminal, and production cost is reduced.

[ 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 actuator of the present invention;

fig. 2 is an exploded view of the actuator of the present invention;

FIG. 3 is a sectional view taken along line A-A of FIG. 1;

fig. 4 is a schematic perspective view of the mobile terminal of the present invention;

FIG. 5 is a sectional view taken along line B-B of FIG. 4;

fig. 6 is an enlarged view of the portion C in fig. 5.

[ 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.

Referring to fig. 1-3, the present invention provides an actuator 100, which includes a support 1, a coil 2, an iron core 3, and a magnetostrictive strain gauge 4. The coil 2 is wound on the outer side of the support 1, the iron core 3 is fixed on the inner side of the support 1, and the magnetostrictive strain gauges 4 are fixedly stacked on the iron core 3. The coil 2 is electrified to enable the magnetostrictive strain gauge 4 to be deformed in a telescopic mode along the axial direction of the coil 2.

Specifically, the bracket 1 includes a bottom plate 11 and a surrounding wall 12 protruding from the bottom plate 11, and the surrounding wall 12 and the bottom plate 11 form an accommodating space 10.

In the present embodiment, the cross section of the surrounding wall 12 is a hollow ring, for example, a circular ring.

The coil 2 is wound outside the surrounding wall 12, and the iron core 3 is located in the accommodating space 10 and fixed on the bottom plate 11.

Since the magnetostrictive strain gauge 4 is deformed in an axial direction, it is more preferable that the magnetostrictive strain gauge 4 is at least partially exposed out of the accommodating space 10 when in use, so as to directly drive other components to vibrate.

In order to increase the stability of the driver 100, the iron core 3 is fixedly connected with the surrounding wall 12 except that the iron core 3 is fixed on the bottom plate 11; the magnetostrictive strain gauge 4 is fixedly arranged on the iron core 3 in a stacked manner, and the magnetostrictive strain gauge 4 is fixedly connected with the surrounding wall 12.

In the above structure, compared with the driving structure of the related art, the structure and the assembly relationship of the stator and the rotor are avoided, so that the overall structure is simplified, the driver 100 is easy to assemble, and the assembly production cost is reduced.

Referring to fig. 3-6, the present invention further provides a mobile terminal 200, which includes a housing 20, a screen 21 and the driver 100.

The screen 21 is covered on the housing 20 and encloses an accommodating space 30 together with the housing 20. The driver 100 is disposed in the receiving space 30.

Specifically, the bracket 1 is fixed to the housing 20 and spaced from the screen 21, and a vibration space is reserved for the screen 21 to vibrate.

The magnetostrictive strain gauge 4 is fixedly connected with the screen 21, and the coil 2 is electrified to enable the magnetostrictive strain gauge 4 to be subjected to telescopic deformation along the axial direction of the coil 2, namely, the dimension along the axial direction is changed, so that the magnetostrictive strain gauge is used for driving the screen 21 to vibrate and sound.

In the structure, the driver 100 directly drives the screen 21 to vibrate and sound through the deformation of the magnetostrictive strain gauge 4, so that the matching combination of a stator and a rotor in the related technology is avoided, the integral structure is simplified, the installation is easier, and the assembly production cost is effectively reduced.

In this embodiment, the drivers 100 include at least two drivers 100, and the two drivers 100 are symmetrically distributed about the short axis of the screen 21, so that the overall vibration sound production effect of the screen 21 is better. Of course, the number of the drivers 100 is not limited to this, and may be one or more, and may be configured according to the performance requirement of the vibration sound production.

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. The utility model provides a driver, its characterized in that, the driver includes the support, around locating the coil in the support outside, be fixed in the inboard iron core of support and fold establish and be fixed in magnetostrictive strain gauge on the iron core, the coil circular telegram makes magnetostrictive strain gauge follows the axial of coil takes place the flexible deformation.

2. The driver of claim 1, wherein the bracket comprises a bottom plate and an enclosure wall protruding from the bottom plate, the enclosure wall has a hollow ring-shaped cross section, the enclosure wall and the bottom plate define an accommodation space, the coil is disposed around the enclosure wall, the core is located in the accommodation space and fixed to the bottom plate, and the magnetostrictive strain gauge is at least partially exposed to the accommodation space.

3. The driver of claim 2, wherein the core is fixedly connected to the enclosure wall and the magnetostrictive strain gauge is fixedly connected to the enclosure wall.

4. An actuator according to claim 2, wherein the wall is circular in cross-section.

5. A mobile terminal is characterized by comprising a shell, a screen, a driver and a control unit, wherein the screen is covered on the shell and encloses an accommodating space together with the shell, and the driver is arranged in the accommodating space and is according to any one of claims 1 to 4; the support is fixed in the shell and arranged at intervals with the screen, the magnetostrictive strain gauge is fixedly connected with the screen, and the coil is electrified to enable the magnetostrictive strain gauge to be subjected to telescopic deformation along the axial direction of the coil so as to drive the screen to vibrate and sound.

6. The mobile terminal of claim 5, wherein the drivers are at least two, and wherein the two drivers are symmetrically distributed about a short axis of the screen.