CN112954090B

CN112954090B - Screen sound producing apparatus

Info

Publication number: CN112954090B
Application number: CN201911258369.1A
Authority: CN
Inventors: 张金龙
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2023-02-07
Anticipated expiration: 2039-12-10
Also published as: CN112954090A

Abstract

The invention provides a screen sound production device. A screen sound generating apparatus includes a middle frame; the screen assembly is fixed on the middle frame; the upper vibrator is fixed on the screen component and comprises a permanent magnet and an upper vibrator shell covering the permanent magnet; the lower vibrator is fixed on the middle frame and comprises a pole core, a coil and a lower vibrator shell, the coil is wound on the pole core, the pole core and the coil are wrapped by the lower vibrator shell, a gap is formed between the lower vibrator and the upper vibrator, and the coil generates a variable magnetic field after being electrified, so that the upper vibrator drives the screen assembly to vibrate relative to the lower vibrator, and a screen sounds; the connecting piece comprises an upper vibrator connecting part and a lower vibrator connecting part, the upper vibrator connecting part is in connection contact with the upper vibrator, the lower vibrator connecting part is in connection contact with the lower vibrator, and the upper vibrator connecting part is opposite to the lower vibrator connecting part.

Description

Screen sound producing apparatus

Technical Field

The invention relates to the field of electroacoustic, in particular to a screen sounding device.

Background

Based on the design requirements of a full-screen mobile phone and appearance imperforate, the prior art provides a screen sounding technology for generating sound by using screen vibration so as to replace the traditional technology for generating sound by opening a receiver on the mobile phone. The screen sounding technology is that the vibration of a vibrator arranged in a mobile phone is utilized to drive a screen to vibrate so as to generate sound waves which are transmitted into human ears.

Among present screen sound production technique, a technical scheme is for laminating respectively on cell-phone screen and center upper and lower vibrator, and upper and lower vibrator parts the equipment, and this kind of scheme leads to upper and lower oscillator accurate counterpoint owing to the reason of assembly precision for the screen vibration effect is poor, and it is poor to send out the sound effect, and product experience is poor.

Disclosure of Invention

An object of the present disclosure is to provide a screen sound generating apparatus capable of ensuring that upper and lower vibrators can be aligned.

A screen sound generating apparatus comprising:

a middle frame;

the screen assembly is fixed on the middle frame;

the upper vibrator is fixed on the screen assembly and comprises a permanent magnet and an upper vibrator shell covering the permanent magnet;

the lower vibrator is fixed on the middle frame and comprises a pole core, a coil and a lower vibrator shell, the coil is wound on the pole core, the pole core and the coil are coated by the lower vibrator shell, the lower vibrator is over against the upper vibrator, a gap is formed between the lower vibrator and the upper vibrator, and a variable magnetic field is generated after the coil is electrified so that the upper vibrator drives the screen assembly to vibrate relative to the lower vibrator to enable the screen to sound;

the connecting piece comprises an upper vibrator connecting part and a lower vibrator connecting part, the upper vibrator connecting part is in connection contact with the upper vibrator, the lower vibrator connecting part is in connection contact with the lower vibrator, and the upper vibrator connecting part and the lower vibrator connecting part are oppositely arranged so that the upper vibrator connecting part is just opposite to the lower vibrator connecting part.

Above-mentioned screen sound production equipment will go up the oscillator through the connecting piece and be connected with lower oscillator, and make with go up oscillator connection contact go up oscillator connecting portion and with oscillator connection contact down oscillator connecting portion are just to setting up for go up oscillator connecting portion can just to lower oscillator connecting portion, guaranteed screen sound production equipment audio.

Drawings

Fig. 1 is a schematic structural diagram of a screen sound production device according to an embodiment of the present disclosure.

Fig. 2 is a schematic structural diagram of a screen sound production device according to an embodiment of the present disclosure.

Fig. 3 is a partial structural schematic diagram of a screen sound generating apparatus according to an embodiment of the present disclosure.

Fig. 4 is a partial structural schematic diagram of a screen sound generating apparatus according to an embodiment of the present disclosure.

Fig. 5 is a partial structural schematic diagram of a screen sound emission device according to an embodiment of the present disclosure.

Detailed Description

While this invention is susceptible of embodiment in different forms, there is shown in the drawings and will herein be described in detail only some specific embodiments, with the understanding that the present description is to be considered as an exemplification of the principles of the disclosure and is not intended to limit the invention to that as illustrated herein.

Thus, a feature indicated in this specification will serve to explain one feature of an embodiment of the disclosure, and not to imply that every embodiment of the invention must have the stated feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more example embodiments. In the following description, numerous specific details are provided to give a thorough understanding of example embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, steps, and so forth. In other instances, well-known structures, methods, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.

Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.

The preferred embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

The present disclosure provides a screen sound generating apparatus. The screen sounding device can be an electronic device with a screen, such as an intelligent mobile terminal, a mobile power supply, an electric automobile, a notebook computer, an electronic book, an intelligent wearable device, a sweeping robot, a Bluetooth sound box and the like. For convenience of explanation, the device to be charged is illustrated by taking a mobile phone as an example.

Specifically, in the present embodiment, referring to fig. 1, the screen sound generating apparatus includes a middle frame 10, a screen assembly 20, a main board 30, a steel sheet 40, an upper vibrator 50, a lower vibrator 60, and a connecting member 80. The screen assembly 20 is fixed on one side of the middle frame 10, the main board 30 is fixed on the other side of the middle frame and can be fixedly connected through screws, gum or glue, an accommodating cavity is formed between the main board 30 and the screen assembly 20, and the steel sheet 40, the upper vibrator 50, the lower vibrator 60 and the connecting piece 80 are accommodated in the accommodating cavity. The steel sheet 40 is fixedly attached to the screen assembly 20. The upper vibrator 50 is fixed on the steel sheet 40 and fixed with the screen assembly 20 through the steel sheet 40. The lower vibrator 60 is fixedly connected to the middle frame 10 and electrically connected to the main board 30. The upper vibrator connecting part 81 and the lower vibrator connecting part 82 are arranged at two ends of the connecting piece 80 and are respectively connected and contacted with the upper vibrator 50 and the lower vibrator 60, and the upper vibrator connecting part 81 and the lower vibrator connecting part 82 are arranged just opposite to each other, so that the upper vibrator 50 just faces the lower vibrator 60. The two ends of the connecting member 80 are respectively connected and contacted with the upper vibrator 50 and the lower vibrator 60 in a fixed connection manner or a detachable connection manner, and in this embodiment, the connecting member 80 is fixedly connected with the upper vibrator 50 and detachably connected with the lower vibrator 60.

Specifically, in the embodiment, the steel sheet 40 covers about 2/5 of the area of the screen assembly 20, so that the vibration of the steel sheet 40 can be more uniformly distributed in each area of the screen, and each area of the screen has stronger vibration strength during vibration, so that the screen sounding device has a better screen sounding effect, and in other embodiments, the area of the screen sounding device can be close to but not more than 2/5 of the area.

A micro-sinking groove is formed in the middle frame 10, and an electric connection line for connecting the main board 30 and the lower vibrator 60 is disposed in the micro-sinking groove.

The upper vibrator 50 includes a permanent magnet and an upper vibrator case. The upper oscillator shell coats the permanent magnet to protect the permanent magnet from being damaged in the vibration process.

Referring to fig. 1 and 5, the lower vibrator 60 includes a pole core, a coil wound on the pole core and electrically connected to the main board 30, magnetic steel, and a lower vibrator case. The magnetic steel is arranged on two sides of the coil. The lower oscillator shell coats the pole core, the magnetic steel and the coil so as to protect the pole core, the magnetic steel and the coil from being damaged in the vibration process. The magnetic steel and the opposite end of the permanent magnet are the same magnetic pole, so that the upper vibrator 50 and the lower vibrator 60 repel each other to form a gap in a non-electrified state, the upper vibrator 50 is prevented from contacting with the lower vibrator 60, and noise can be prevented from being generated in the screen sounding process. The coil generates a changing magnetic field after being electrified, so that the upper vibrator 50 drives the screen assembly 20 to vibrate relative to the lower vibrator 60, and the screen sounds. Extension arms 62 are arranged on two sides of the bottom surface of the lower oscillator shell, and the extension arms 62 are in contact with one surface of the middle frame 10 facing the main board 30 and are fixedly connected with the middle frame 10 through screws.

Referring to fig. 2, it is understood that in one embodiment of the present disclosure, the connecting member 80 may be a sleeve 801. The sleeve 801 is of a hollow structure, openings are formed in two ends of the sleeve 801 to form a through hole, the openings in the two ends of the sleeve 801 are respectively an upper vibrator connecting portion 81 and a lower vibrator connecting portion 82, the upper vibrator 50 and the lower vibrator 60 are respectively inserted into the through hole through the upper vibrator connecting portion 81 and the lower vibrator connecting portion 82, and the upper vibrator 50 is opposite to the lower vibrator 60 through the through hole. It can be understood that, a plurality of sleeve elastic pieces are further disposed on the inner side wall of the sleeve 801, and are respectively used for being fixedly connected with the upper vibrator 50 and detachably connected with the lower vibrator 60, and a gap is formed between the upper vibrator 50 and the lower vibrator 60 to prevent the upper vibrator 50 from contacting the lower vibrator 60, so that noise generated in the screen generating process can be avoided.

In the using process, after the coil is electrified, a changing magnetic field is generated, the permanent magnet in the upper vibrator 50 vibrates up and down in the sleeve 801 under the action of the changing magnetic field generated by the coil, and drives the screen assembly 20 to vibrate, so that the screen sounds.

Understandably, in another embodiment of the present disclosure, referring to fig. 3 to 5, the above-mentioned connecting member 80 may also be elastic pieces 802, and the number of the elastic pieces 802 may be 1, 2 or more, in this embodiment, two are taken as an example for description.

The two elastic pieces 802 are respectively located at two sides of the upper vibrator 50, the two ends of the elastic pieces are respectively an upper vibrator connecting portion 81 and a lower vibrator connecting portion 82, and the upper vibrator connecting portion 81 and the lower vibrator connecting portion 82 are arranged opposite to each other. The upper vibrator boss 51 is correspondingly arranged on two sides of the upper vibrator 50, the elastic sheet connecting part 61 is correspondingly arranged on two sides of the lower vibrator 60, and the elastic sheet 802 connects the upper vibrator boss 51 with the elastic sheet connecting part 61 which is positioned on the same side with the upper vibrator boss 51. Specifically, the upper vibrator connecting portion 81 of the elastic piece 802 may be connected to the upper vibrator boss 51 by welding, and the lower vibrator connecting portion 82 of the elastic piece 802 may be connected to the elastic piece connecting portion 61 by a screw, or in other embodiments, the lower vibrator connecting portion 82 of the elastic piece 802 may be detachably connected to the elastic piece connecting portion 61 by a bolt or a pin.

In the using process, after the coil is electrified, a changing magnetic field is generated, the upper vibrator 50 is driven to vibrate up and down under the action of the changing magnetic field generated by the coil, the elastic sheet 802 deforms along with the vibration of the upper vibrator 50, and the screen assembly 20 is driven to vibrate to enable the screen to sound.

While the present disclosure has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A screen sound generating apparatus, comprising:

a middle frame;

the screen assembly is fixed on the middle frame;

the lower vibrator is fixed on the middle frame and comprises a pole core, a coil and a lower vibrator shell, the coil is wound on the pole core, the pole core and the coil are coated by the lower vibrator shell, a gap is formed between the lower vibrator and the upper vibrator, and the coil generates a variable magnetic field after being electrified, so that the upper vibrator drives the screen assembly to vibrate relative to the lower vibrator to enable the screen to sound;

the connecting piece comprises an upper vibrator connecting part and a lower vibrator connecting part, the upper vibrator connecting part is connected and contacted with the upper vibrator, the lower vibrator connecting part is connected and contacted with the lower vibrator, and the upper vibrator connecting part is arranged opposite to the lower vibrator connecting part;

the lower vibrator connecting part is detachably connected with the lower vibrator.

2. The screen sound production device of claim 1, wherein the connector is a sleeve, the upper vibrator is sleeved in one end of the sleeve and connected to an inner side wall of the sleeve, the lower vibrator is sleeved in the other end of the sleeve and detachably connected to an inner side wall of the sleeve, and a gap is formed between the lower vibrator and the upper vibrator in the sleeve.

3. The screen sound production device according to claim 2, wherein a sleeve spring is arranged in the sleeve, and the upper vibrator and the lower vibrator are in contact with the sleeve through the sleeve spring.

4. The screen sound production device according to claim 1, wherein the connecting member is a spring plate, one end of the spring plate is connected with the upper vibrator, the other end of the spring plate is detachably connected with the lower vibrator, and a gap is formed between the lower vibrator and the upper vibrator.

5. The screen sound production device of claim 4, wherein upper vibrator bosses are arranged on two sides of the upper vibrator, spring plate connecting portions are correspondingly arranged on two sides of the lower vibrator, the connecting pieces are spring plates positioned on two sides of the upper vibrator, one end of each spring plate is welded on the upper vibrator bosses, the other end of each spring plate is detachably connected with the spring plate connecting portions, and gaps are formed between the lower vibrator and the upper vibrator.

6. The screen sound generating apparatus of claim 5, wherein the spring plate is bolted to the spring plate connection portion.

7. The screen sound generating apparatus of claim 5, wherein the spring tab is pinned to the spring tab connection portion.

8. The screen sound production device of claim 1, wherein extension arms are further arranged on two sides of the lower vibrator, and the lower vibrator is fixedly connected to the middle frame through the extension arms.

9. The screen sound production device of claim 1, wherein the lower vibrator further comprises magnetic steel, the magnetic steel is arranged on two sides of the coil, and one end of the magnetic steel opposite to the permanent magnet is of the same magnetic pole, so that the upper vibrator and the lower vibrator repel each other in a non-energized state to avoid contact between the upper vibrator and the lower vibrator.

10. The screen sound production device according to claim 1, further comprising a main board, wherein the coil of the lower vibrator is electrically connected with the main board, the middle frame is provided with a micro-sinking groove, and an electrical connection wire for connecting the main board and the coil is arranged in the micro-sinking groove.

11. The screen sound generating apparatus of claim 1, further comprising a steel sheet, wherein the steel sheet is fixedly connected to the screen assembly, and the upper vibrator is fixed to the steel sheet and fixed to the screen assembly through the steel sheet.