CN210041904U - Screen exciter and mobile terminal - Google Patents
Screen exciter and mobile terminal Download PDFInfo
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- CN210041904U CN210041904U CN201921542925.3U CN201921542925U CN210041904U CN 210041904 U CN210041904 U CN 210041904U CN 201921542925 U CN201921542925 U CN 201921542925U CN 210041904 U CN210041904 U CN 210041904U
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Abstract
The utility model discloses a screen exciter and mobile terminal, screen exciter includes: the magnetic assembly comprises a first magnetic gathering part and a first magnetic part, the first magnetic gathering part is provided with a first groove, and the first magnetic part is arranged in the first groove; the coil assembly comprises a second magnetism gathering part and a coil, a second groove is formed in one face, facing the first magnetic piece, of the second magnetism gathering part, the coil is arranged in the second groove, and when the coil is electrified, one of the coil assembly and the magnetic assembly moves in a reciprocating mode relative to the other. The first magnetism gathering part has magnetism gathering effect on the magnetic field of the first magnetic part and the magnetic field generated by the second magnetism gathering part when the coil is electrified, so that the magnetic flux of one side of the first magnetic part facing the coil and one side of the coil facing the first magnetic part is increased, the driving force formed between the coil and the first magnetic part is larger, the display screen is driven to vibrate more effectively, and the sound production effect of the display screen is improved.
Description
Technical Field
The utility model relates to a sound generating mechanism technical field especially relates to a screen exciter and mobile terminal.
Background
With the development of the mobile terminal industry, the continuous pursuit of extreme appearance and high screen ratio is a great development direction at present, which not only can meet the appearance requirements of consumers, but also can meet the requirements of the consumers in the aspects of video and audio entertainment and the like.
The mobile terminal often needs to make sound when working, and the sound can be realized by a sound production device, but the sound production device occupies the display area of the mobile terminal. In order to improve the screen occupation ratio of the mobile terminal, a screen sounding technology is developed. Specifically, such techniques may drive the display screen to vibrate via a screen exciter, thereby producing sound. The technology does not need to arrange a sounding device in a display area of the mobile terminal, so that the screen occupation ratio is improved.
However, the driving force generated by the screen driver is small, so that the display screen has poor sound production effect.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a screen exciter and mobile terminal to solve the relatively poor problem of vocal effect of display screen.
In order to solve the above problem, the utility model adopts the following technical scheme:
a screen actuator comprising:
the magnetic assembly comprises a first magnetic gathering part and a first magnetic piece, the first magnetic gathering part is provided with a first groove, and the first magnetic piece is arranged in the first groove;
the coil assembly comprises a second magnetism gathering part and a coil, a second groove is formed in one face, facing the first magnetic piece, of the second magnetism gathering part, the coil is arranged in the second groove, and when the coil is electrified, one of the coil assembly and the magnetic assembly reciprocates relative to the other.
Preferably, the coil assembly further includes a second magnetic member disposed in the second groove, the second magnetic member is opposite to the first magnetic member, and polarities of the second magnetic member and the first magnetic member are opposite to each other.
Preferably, the coil surrounds the second magnetic member.
Preferably, the axis of the coil, the center line of the first magnetic member, and the center line of the second magnetic member all coincide.
Preferably, in the axial direction of the coil, a first side surface of the first magnetism collecting portion is aligned with a second side surface of the second magnetism collecting portion.
Preferably, the coil assembly further includes a circuit board, the circuit board is electrically connected to the coil, a first portion of the circuit board is located in the second groove and attached to the coil, and a second portion of the circuit board is located outside the second magnetism collecting portion.
A mobile terminal, comprising:
a housing;
the display screen is arranged on the shell;
a screen exciter as claimed in any one of the preceding claims, wherein one of the magnetic assembly and the coil assembly is disposed on the display screen and the other is disposed on the housing.
Preferably, the magnetic assembly is disposed on the display screen, and the coil assembly is disposed on the housing.
Preferably, still include the installation piece, a side surface of installation piece with the display screen is laminated mutually, magnetic component set up in the installation piece deviates from the one side of display screen, in the perpendicular to in the direction of display screen, magnetic component's projection is located in the projection of installation piece.
Preferably, in a direction perpendicular to the display screen, a ratio between a projected area of the mounting piece and a projected area of the magnetic assembly is greater than 2.
Preferably, the housing includes a middle frame, the middle frame is provided with an avoiding portion, and at least a part of the coil assembly is located in the avoiding portion.
The utility model discloses a technical scheme can reach following beneficial effect:
the utility model discloses an among the screen exciter, first magnetism part sets up in the first recess of first magnetism portion of gathering, the coil sets up in the second recess of second magnetism portion of gathering, make first magnetism portion of gathering to the magnetic field of first magnetism part, produced magnetic field all has the magnetism effect of gathering when second magnetism portion is to the coil circular telegram, thereby increase one side of first magnetism part orientation coil, the magnetic flux of coil orientation one side of first magnetism part, make the drive power that forms between coil and the first magnetism part bigger, drive the display screen vibration more effectively with this, thereby improve the sound production effect of display screen.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:
fig. 1 is an exploded view of a screen exciter according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a screen exciter according to an embodiment of the present invention;
fig. 3 is an exploded view of a part of the structure of a mobile terminal according to an embodiment of the present invention;
fig. 4 is a cross-sectional view of a partial structure of a mobile terminal according to an embodiment of the present invention.
Description of reference numerals:
100-display screen, 200-magnetic component, 210-first magnetism gathering part, 211-first groove, 212-first side face, 220-first magnetic part, 300-coil component, 310-second magnetism gathering part, 311-second groove, 312-second side face, 320-coil, 330-circuit board, 340-second magnetic part, 400-shell, 410-middle frame, 411-avoiding part and 500-installation piece.
Detailed Description
To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to 4, an embodiment of the present invention discloses a screen exciter, which can be applied to a mobile terminal to drive a display screen 100 of the mobile terminal to vibrate. The screen actuator may specifically comprise a magnetic assembly 200 and a coil assembly 300.
The magnetic assembly 200 specifically includes a first magnetic gathering portion 210 and a first magnetic member 220, the first magnetic gathering portion 210 is provided with a first groove 211, and the first magnetic member 220 is disposed in the first groove 211. That is, the first magnetic gathering part 210 has a half-enclosed structure such that the first magnetic member 220 is located inside the first magnetic gathering part 210. Specifically, the first magnetic gathering portion 210 may be made of a magnetic conductive material, and the first magnetic gathering portion 210 may change the distribution of magnetic lines of force, so that the magnetic flux of the first magnetic member 220 toward the side of the coil assembly 300 is greater, thereby achieving the magnetic gathering effect. The first magnetic member 220 may be magnetic steel.
The coil assembly 300 includes a second magnetic gathering portion 310, a coil 320 and a circuit board 330, wherein a second recess 311 is formed on a surface of the second magnetic gathering portion 310 facing the first magnetic member 220, and the coil 320 is disposed in the second recess 311. Optionally, the coil 320 is electrically connected to a circuit board 330, the circuit board 330 comprising a first portion and a second portion connected, wherein: the first part is positioned in the second groove 311 and is attached to the coil 320, so that the connection area of the circuit board 330 and the coil 320 is increased, and the connection reliability of the circuit board and the coil 320 is improved; the second portion is located outside the second magnetism collecting portion 310. The circuit board 330 may be electrically connected to a main board of the mobile terminal, and particularly, the second portion of the circuit board 330 may be connected to the main board, so that the coil 320 may be supplied with current, thereby generating a magnetic field. That is, the second magnetic convergence part 310 is a half surrounding structure such that the coil 320 is located inside the first magnetic convergence part 210. Specifically, the second magnetism gathering part 310 may be made of a magnetic conductive material, and the second magnetism gathering part 310 may change the distribution of the magnetic force lines, so that the magnetic flux of the side of the coil 320 facing the magnetic assembly 200 is larger, thereby achieving the magnetism gathering effect.
An alternating current may be applied to the coil 320, so that an alternating magnetic field is generated around the coil 320, and a magnetic attraction force and a magnetic repulsion force are alternately generated between the coil 320 and the first magnetic member 220, and one of the coil assembly 300 and the magnetic assembly 200 reciprocates relative to the other under the action of the alternately changed magnetic attraction force and magnetic repulsion force. Specifically, the coil assembly 300 may be fixed with the display screen 100, and the coil assembly 300 may reciprocate relative to the magnetic assembly 200, thereby implementing vibration sounding of the display screen 100; alternatively, the magnetic assembly 200 may be fixed to the display screen 100, and the magnetic assembly 200 may reciprocate with respect to the coil assembly 300, thereby enabling vibration sounding of the display screen 100.
The first magnetic gathering part 210 can increase the magnetic flux of the first magnetic member 220 toward the side of the coil 320, and the second magnetic gathering part 310 can increase the magnetic flux of the coil 320 toward the side of the first magnetic member 220, so that the driving force formed between the coil 320 and the first magnetic member 220 is greater, and thus the display screen 100 is driven to vibrate more effectively, thereby improving the sound production effect of the display screen 100. In addition, the coil assembly 300 or the magnetic assembly 200 may be directly fixed to the display screen 100, so that the driving force generated between the coil 320 and the first magnetic member 220 may be more efficiently applied to the display screen 100, thereby more efficiently driving the display screen 100 to vibrate.
In a further embodiment, the coil assembly 300 may further include a second magnetic element 340, the second magnetic element 340 is disposed in the second recess 311, and the second magnetic element 340 is opposite to the first magnetic element 220 and has opposite polarities. At this time, a magnetic repulsion force may be generated between the first magnetic member 220 and the second magnetic member 340, and the magnetic repulsion force may prevent the magnetic assembly 200 and the coil assembly 300 from being directly attracted together, which may cause the display screen 100 to be unable to generate sound, and may enable the coil assembly 300 and the display screen 100, or the connection between the magnetic assembly 200 and the display screen 100 to be more reliable. Specifically, the second magnetic member 340 may be magnetic steel.
The second magnetic member 340 can be disposed outside the coil 320, but when such an arrangement is adopted, the space occupied by the second magnetic member 340 is relatively large, which results in an excessively large space occupied by the whole screen actuator. To this end, the coil 320 may be wound around the second magnetic member 340. Because the coil 320 has a vacant space therein, and the second magnetic member 340 is disposed in the vacant space, the second magnetic member 340 can occupy substantially no extra space, thereby reducing the space occupied by the screen actuator and facilitating the arrangement of the screen actuator in the mobile terminal.
The coil 320, the first magnetic member 220, and the second magnetic member 340 may each have a rectangular structure. In order to make the driving force generated by the screen actuator more uniform, the axis of the coil 320, the center line of the first magnetic member 220 and the center line of the second magnetic member 340 are all overlapped, so that the acting force generated between the coil 320 and the first magnetic member 220 and the acting force between the first magnetic member 220 and the second magnetic member 340 are all distributed by taking the axis of the coil 320 as the center, thereby achieving the purpose.
Optionally, in the axial direction of the coil 320, the first side surface 212 of the first magnetic gathering part 210 is aligned with the second side surface 312 of the second magnetic gathering part 310. That is, the contour dimension of the first side surface 212 of the first magnetic gathering part 210 is substantially equal to the contour dimension of the second side surface 312 of the second magnetic gathering part 310, so that the first magnetic gathering part 210 and the second magnetic gathering part 310 are both arranged in a limited space to the maximum, and therefore the sizes of the coil 320 and the first magnetic element 220 are increased as much as possible, so that a greater driving force is obtained in the limited space, and the sound production effect of the display screen 100 is optimized.
As shown in fig. 3 and 4, an embodiment of the present invention also discloses a mobile terminal, which includes a housing 400, a display screen 100 and a screen exciter. The housing 400 provides a mounting base for other parts of the mobile terminal, and the display screen 100 is disposed on the housing 400. The screen exciter is the screen exciter according to any of the above embodiments, wherein one of the magnetic assembly 200 and the coil assembly 300 is disposed on the display screen 100, and the other is disposed on the housing 400. When alternating current is applied to the coil 320, the magnetic assembly 200 or the coil assembly 300 may drive the display screen 100 to vibrate, so that the display screen 100 may generate sound.
Since the coil assembly 300 includes a relatively large number of components, it is preferable to dispose the magnetic assembly 200 on the display screen 100 and the coil assembly 300 on the housing 400, so that the housing 400 can more reliably support the coil assembly 300, thereby improving the reliability of the mobile terminal. Specifically, the coil assembly 300 may be connected to the housing 400 by a threaded fastener, and the magnetic assembly 200 may be directly fixed to the display screen 100, for example, both may be fixed by adhesion.
In a further embodiment, the mobile terminal may further include an installation sheet 500, a side surface of the installation sheet 500 is attached to the display screen 100, and the magnetic component 200 is disposed on a side of the installation sheet 500 away from the display screen 100. Specifically, the mounting plate 500 and the display screen 100 and the mounting plate 500 and the magnetic assembly 200 may be fixed together by adhesion, and the mounting plate 500 may be a metal plate, such as a steel plate, to improve the structural strength of the mounting plate 500. The projection of the magnetic assembly 200 is located within the projection of the mounting plate 500 in a direction perpendicular to the display screen 100. In other words, the size of the mounting plate 500 is larger than that of the magnetic assembly 200, and when the magnetic assembly 200 is subjected to a driving force, the driving force can be dispersed through the mounting plate 500 and then applied to the display panel 100. Therefore, the mounting plate 500 can prevent the display panel 100 from having a problem of excessive local stress, thereby preventing the display panel 100 from having cracks.
Optionally, the ratio between the projected area of the mounting plate 500 and the projected area of the magnetic assembly 200 in the direction perpendicular to the display screen 100 is greater than 2. When magnetic component 200 is located the intermediate position of display screen 100, the screen sound production effect is better, and consequently the projected area of installation piece 500 need not to set up too big, and the ratio between the projected area of installation piece 500 and magnetic component 200's projected area this moment can be set for 2 ~ 4. When magnetic component 200 deviates from the middle position of display screen 100, the effect of screen sound production becomes poor, so the projection area of installation sheet 500 can be correspondingly increased, thereby improving the effect of screen sound production, and the ratio between the projection area of installation sheet 500 and the projection area of magnetic component 200 can be set at 4-10.
When the screen exciter further includes the second magnetic member 340, the second magnetic member 340 may effectively prevent the problem of the degradation of the adhesion between the magnetic assembly 200 and the display screen 100 or between the magnetic assembly 200, the mounting plate 500 and the display screen 100, so that the magnetic assembly 200 may drive the display screen 100 to vibrate more effectively.
In an alternative embodiment, the housing 400 may include a middle frame 410, the middle frame 410 defining an escape 411, and at least a portion of the coil assembly 300 being located within the escape 411. After the avoiding portion 411 is disposed, the coil assembly 300 can fully utilize the space occupied by the middle frame 410, so that the extra occupied space of the coil assembly 300 is reduced to some extent, and the thickness of the mobile terminal is smaller. Specifically, the escape portion 411 may be an escape groove or an escape hole.
The embodiment of the utility model provides a disclosed mobile terminal can be for smart mobile phone, panel computer, electronic book reader or wearable equipment. Of course, the mobile terminal may also be other devices, and the embodiment of the present invention does not limit this.
The utility model discloses what the key description in the above embodiment is different between each embodiment, and different optimization characteristics are as long as not contradictory between each embodiment, all can make up and form more preferred embodiment, consider that the literary composition is succinct, then no longer describe here.
The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. A screen actuator, comprising:
the magnetic component (200) comprises a first magnetic gathering part (210) and a first magnetic piece (220), the first magnetic gathering part (210) is provided with a first groove (211), and the first magnetic piece (220) is arranged in the first groove (211);
the coil component (300) comprises a second magnetism gathering part (310) and a coil (320), a second groove (311) is formed in one surface, facing the first magnetic piece (220), of the second magnetism gathering part (310), the coil (320) is arranged in the second groove (311), and when the coil (320) is electrified, one of the coil component (300) and the magnetic component (200) moves in a reciprocating mode relative to the other.
2. The screen actuator of claim 1, wherein the coil assembly (300) further comprises a second magnetic member (340), the second magnetic member (340) being disposed in the second recess (311), the second magnetic member (340) being opposite the first magnetic member (220) and having opposite polarities.
3. A screen actuator as defined in claim 2, wherein the coil (320) surrounds the second magnetic member (340).
4. A screen actuator as defined in claim 3, wherein the axis of the coil (320), the centre line of the first magnetic element (220) and the centre line of the second magnetic element (340) all coincide.
5. A screen actuator as defined in claim 1, wherein a first side (212) of the first flux concentrator (210) is aligned with a second side (312) of the second flux concentrator (310) in an axial direction of the coil (320).
6. A screen driver according to claim 1, wherein the coil assembly (300) further comprises a circuit board (330), the circuit board (330) being electrically connected to the coil (320), a first portion of the circuit board (330) being located within the second recess (311) and abutting the coil (320), and a second portion of the circuit board (330) being located outside the second magnetic focusing portion (310).
7. A mobile terminal, comprising:
a housing (400);
a display screen (100), the display screen (100) being disposed on the housing (400);
a screen exciter according to any of claims 1 to 6, the magnetic assembly (200) and the coil assembly (300) being disposed one on the display screen (100) and the other on the housing (400).
8. The mobile terminal of claim 7, wherein the magnetic assembly (200) is disposed on the display screen (100) and the coil assembly (300) is disposed on the housing (400).
9. The mobile terminal of claim 8, further comprising a mounting sheet (500), wherein a side surface of the mounting sheet (500) is attached to the display screen (100), the magnetic assembly (200) is disposed on a surface of the mounting sheet (500) facing away from the display screen (100), and a projection of the magnetic assembly (200) is located in a projection of the mounting sheet (500) in a direction perpendicular to the display screen (100).
10. The mobile terminal of claim 8, wherein the housing (400) comprises a middle frame (410), the middle frame (410) being provided with an escape (411), and at least a portion of the coil assembly (300) being located within the escape (411).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921542925.3U CN210041904U (en) | 2019-09-17 | 2019-09-17 | Screen exciter and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921542925.3U CN210041904U (en) | 2019-09-17 | 2019-09-17 | Screen exciter and mobile terminal |
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| Publication Number | Publication Date |
|---|---|
| CN210041904U true CN210041904U (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921542925.3U Active CN210041904U (en) | 2019-09-17 | 2019-09-17 | Screen exciter and mobile terminal |
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| CN (1) | CN210041904U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111343543A (en) * | 2020-03-24 | 2020-06-26 | 歌尔股份有限公司 | Exciter, electronic device and method |
| CN111583784A (en) * | 2020-05-27 | 2020-08-25 | 京东方科技集团股份有限公司 | Display substrate and display device |
| CN113411418A (en) * | 2020-03-16 | 2021-09-17 | 华为技术有限公司 | Mobile terminal |
| WO2022193934A1 (en) * | 2021-03-18 | 2022-09-22 | 海信视像科技股份有限公司 | Display device, exciter, and audio signal playback method |
-
2019
- 2019-09-17 CN CN201921542925.3U patent/CN210041904U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113411418A (en) * | 2020-03-16 | 2021-09-17 | 华为技术有限公司 | Mobile terminal |
| CN113411418B (en) * | 2020-03-16 | 2022-07-12 | 华为技术有限公司 | Mobile terminal |
| CN111343543A (en) * | 2020-03-24 | 2020-06-26 | 歌尔股份有限公司 | Exciter, electronic device and method |
| CN111583784A (en) * | 2020-05-27 | 2020-08-25 | 京东方科技集团股份有限公司 | Display substrate and display device |
| WO2022193934A1 (en) * | 2021-03-18 | 2022-09-22 | 海信视像科技股份有限公司 | Display device, exciter, and audio signal playback method |
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