CN108769880A - A kind of screen vocal structure for terminal - Google Patents
A kind of screen vocal structure for terminal Download PDFInfo
- Publication number
- CN108769880A CN108769880A CN201810315224.XA CN201810315224A CN108769880A CN 108769880 A CN108769880 A CN 108769880A CN 201810315224 A CN201810315224 A CN 201810315224A CN 108769880 A CN108769880 A CN 108769880A
- Authority
- CN
- China
- Prior art keywords
- screen
- chamber
- piston
- cavity
- ante
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R15/00—Magnetostrictive transducers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1601—Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays
- G06F1/1605—Multimedia displays, e.g. with integrated or attached speakers, cameras, microphones
Abstract
The present invention relates to a kind of screen vocal structures for terminal, including screen and rear shell, the screen is tightly connected with the rear shell and forms the ante-chamber of sealing, the back cavity of the partial pressure for balancing the preceding intracavity gas is provided in the ante-chamber, intracavitary is equipped with the magnetic magnetic piston of tool for compressing the gas in the ante-chamber and then making the hooking generate acoustic pressure and make a sound being reciprocally moveable in the rear, and the conductive coil that the magnetic piston movement is driven by electromagnetic induction is arranged with outside the magnetic piston.Ante-chamber cavity in the screen vocal structure for terminal of the present invention is big, and low frequency is good, and screen area is big, pushes outside air volume more, and generation acoustic pressure is big, and screen constitutes ante-chamber with rear shell sealing, and NBC protective performance is good, is not influenced by shape environment.
Description
Technical field
The present invention relates to equipment technical fields of raising one's voice, more particularly, to a kind of screen vocal structure for terminal.
Background technology
With the portability of mobile terminal, linking Internet mouth product, the requirement of ultra-thin and ultra-light is also higher and higher, existing screen
Curtain sounding mainly has piezoelectric ceramic technology, motor drive device technology, and there are shortcomings：Acoustic pressure is small, can only make as receiver
With；Low frequency differences, sound is sharp, is unfavorable for human ear and listens for a long time；NBC protective performance is poor, is easy failure.
Invention content
The object of the present invention is to provide a kind of screen vocal structures for terminal, solve terminal screen in the prior art
The acoustic pressure of vocal skill is small, low frequency differences, NBC protective performance difference problems.
The technical proposal for solving the technical problem of the invention is：A kind of screen vocal structure for terminal, including
Screen and rear shell, the screen are tightly connected and are formed the ante-chamber of sealing with the rear shell, be provided with and be used in the ante-chamber
Balance the back cavity of the partial pressure of the preceding intracavity gas, in the rear intracavitary be equipped be reciprocally moveable it is described for compressing
The magnetic magnetic piston of tool that gas in ante-chamber makes the hooking generate acoustic pressure and makes a sound in turn, in the magnetic
Property piston outside be arranged with the conductive coil that magnetic piston movement is driven by electromagnetic induction.
Optionally, the back cavity includes the first cavity, the second cavity communicated with the ante-chamber and described for being connected to
The channel of first cavity and the second cavity, the magnetic piston includes piston main body and the piston main body is located in the channel,
One end of the piston main body is provided with the piston pressing plate for compressing the gas in the ante-chamber and the piston pressing plate is located at institute
It states in the second cavity, the other end of the piston main body is provided with the piston baffle for preventing the magnetic piston from falling off and should
Piston baffle is located in first cavity.
Optionally, it is mutually matched between each end end wall and the internal chamber wall of second cavity of the piston pressing plate, and institute
It states and is provided with lubricant between each end end wall and the internal chamber wall of second cavity of piston pressing plate.
Optionally, the lubricant is lubricating oil or talcum powder.
Optionally, the conductive coil winding is in the rear on the periphery wall corresponding to the channel of chamber.
Optionally, the magnetic piston is made of magnet.
Optionally, the conductive coil is made of copper, gold or silver.
Optionally, the number of turns >=3 of the conductive coil.
Optionally, the screen is OLED screen or LED screen；The rear shell is made of hard metal.
Optionally, it is tightly connected by mode for dispensing glue between the screen and the rear shell.
The screen vocal structure for terminal for implementing the present invention, has the advantages that：The present invention's is used for terminal
Screen vocal structure in ante-chamber cavity it is big, low frequency is good, and screen area is big, push outside air volume it is more, generate acoustic pressure it is big,
Screen constitutes ante-chamber with rear shell sealing, and NBC protective performance is good, is not influenced by shape environment.
Description of the drawings
Fig. 1 is that the outer of the screen vocal structure for terminal of the present invention regards schematic diagram；
Fig. 2 be the present invention Fig. 1 in screen vocal structure A-A to partial cutaway view schematic.
Specific implementation mode
With reference to the accompanying drawings and examples, the present invention is made for the screen vocal structure of terminal and specific implementation into one
Walk explanation：
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
As shown in Figs. 1-2, the present invention relates to a kind of screen vocal structure for terminal, which includes screen
Curtain 1 and rear shell 2 are tightly connected and then are formed the ante-chamber 6 of sealing between screen 1 and rear shell 2.It can lead between screen 1 and rear shell 2
It crosses mode for dispensing glue to be tightly connected, can also realize sealing by installing sealing ring etc. additional.Screen 1 can be OLED screen, also may be used
To be LED screen etc., Light deformation can occur.Rear shell 2 can be such as aluminium alloy, stainless steel made of hard metal,
The hard metal cannot deform.In other embodiments, rear shell 2 can also be other hard materials that will not be deformed
Made of material, such as hard ceramic.
The back cavity 5 for the partial pressure of intracavity gas before balancing is provided in ante-chamber 6, being equipped in back cavity 5 can
The gas being used to compress in ante-chamber 6 moved back and forth makes the deformation of screen 1 generation acoustic pressure in turn and the tool made a sound is magnetic
Magnetic piston 3 is arranged with outside magnetic piston 3 and drives the conductive coil 4 that magnetic piston 3 moves by electromagnetic induction.
Wherein, back cavity 5 includes the first cavity 51, the second cavity 52 communicated with ante-chamber 6 and is used to be connected to the first cavity
51 and second cavity 52 channel 53, magnetic piston 3 includes that piston main body 31 and the piston main body 31 are located in channel 53, piston
One end of main body 31 is provided with the piston pressing plate 32 for compressing the gas in ante-chamber 6 and the piston pressing plate 32 is located at the second cavity
In 52, the other end of piston main body 31 is provided with the piston baffle 33 for preventing magnetic piston 3 from falling off and the piston baffle 33
In the first cavity 51.Specifically, conductive coil 4 is around being located on the periphery wall corresponding to the channel 53 of back cavity 5.
Magnetic piston 3 can also be preferably to be made of other magnetic materials made of magnet, the guarantor in the present invention
Within the scope of shield.Conductive coil 4 is made of the electrically conductive metal such as copper, gold or silver.The number of turns >=3 of conductive coil 4, it is excellent
Selection of land, the number of turns >=5 of conductive coil 4 can generate sufficiently large magnetic field to generate.
Wherein, it is mutually matched between each end end wall and the internal chamber wall of the second cavity 52 of piston pressing plate 32, and piston pressing plate
It is provided with lubricant between 32 each end end wall and the internal chamber wall of the second cavity 52.The lubricant can be lubricating oil or talcum powder
Etc..
The operation principle of the screen vocal structure of the present invention is as follows：After conductive coil 4 is energized, according to current direction, according to
It is electric current on the right side of Ampere's law (right-hand rule), 3 right side of magnetic piston is the poles N, is powered in conductive coil 4, according to magnetic
Iron homopolar-repulsion, heteropolar attracting principle, magnetic piston 3 move to the right, squeeze the air in ante-chamber 6, air push screen 1
Deformation outward pushes 1 outer air of screen, generates acoustic pressure, makes a sound；Electrical current signal intensity on conductive coil 4, becomes
Reverse current, according to being the poles N on the left of Ampere's law, 3 right side of magnetic piston is the poles N, is powered in conductive coil 4, according to
Magnet homopolar-repulsion, heteropolar attracting principle, magnetic piston 3 move to the left, and the air pressure in ante-chamber 6 becomes smaller, by the external world
The pressure of atmospheric pressure, screen 1 are deformed inward, and are generated acoustic pressure, are made a sound.That is, when conductive coil 4 receives sine
When wave, cosine wave or electroacoustic signal, 3 compressed air of magnetic piston generates pressure, promotes the vibration of screen 1 to generate acoustic pressure, sends out sound
Sound.
The ante-chamber cavity of the present invention is big, and low frequency is good, and screen area is big, pushes outside air volume more, and generation acoustic pressure is big, screen
Curtain constitutes ante-chamber with rear shell sealing, and NBC protective performance is good, is not influenced by shape environment.
The embodiments of the present invention are for illustration only, can not represent the quality of embodiment.
It these are only the preferred embodiment of the present invention, be not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of screen vocal structure for terminal, including screen (1) and rear shell (2), which is characterized in that the screen (1)
The ante-chamber (6) of sealing is tightly connected and formed with the rear shell (2), be provided in the ante-chamber (6) for balance it is described before
The back cavity (5) of the partial pressure of chamber (6) interior gas, be equipped in chamber (5) in the rear be reciprocally moveable it is described for compressing
Gas in ante-chamber (6) makes the magnetic magnetic piston of tool that the screen (1) deformation generates acoustic pressure and makes a sound in turn
(3), the conductive coil for driving the magnetic piston (3) mobile by electromagnetic induction is arranged with outside the magnetic piston (3)
(4)。
2. screen vocal structure according to claim 1, which is characterized in that the back cavity (5) include the first cavity (51),
The second cavity (52) for being communicated with the ante-chamber (6) and for being connected to the logical of first cavity (51) and the second cavity (52)
Road (53), the magnetic piston (3) includes piston main body (31) and the piston main body (31) is located in the channel (53), described
One end of piston main body (31) is provided with piston pressing plate (32) and the piston pressing plate for compressing the gas in the ante-chamber (6)
(32) it is located in second cavity (52), the other end of the piston main body (31) is provided with for preventing the magnetic piston
(3) piston baffle (33) and the piston baffle (33) to fall off is located in first cavity (51).
3. screen vocal structure according to claim 2, which is characterized in that each end end wall of the piston pressing plate (32) with
It is mutually matched between the internal chamber wall of second cavity (52), and each end end wall of the piston pressing plate (32) and second chamber
It is provided with lubricant between the internal chamber wall of body (52).
4. screen vocal structure according to claim 3, which is characterized in that the lubricant is lubricating oil or talcum powder.
5. screen vocal structure according to claim 2, which is characterized in that conductive coil (4) winding is in the rear
On periphery wall corresponding to the channel (53) of chamber (5).
6. screen vocal structure according to claim 1, which is characterized in that the magnetic piston (3) is made of magnet
's.
7. screen vocal structure according to claim 1, which is characterized in that the conductive coil (4) is by copper, gold or silver
It is manufactured.
8. screen vocal structure according to claim 1, which is characterized in that the number of turns >=3 of the conductive coil (4).
9. screen vocal structure according to claim 1, which is characterized in that the screen (1) is OLED screen or LED screen；
The rear shell (2) is made of hard metal.
10. screen vocal structure according to claim 1, which is characterized in that the screen (1) and the rear shell (2) it
Between be tightly connected by mode for dispensing glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810315224.XA CN108769880B (en) | 2018-04-10 | 2018-04-10 | Screen sounding structure for terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810315224.XA CN108769880B (en) | 2018-04-10 | 2018-04-10 | Screen sounding structure for terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108769880A true CN108769880A (en) | 2018-11-06 |
| CN108769880B CN108769880B (en) | 2020-07-24 |
Family
ID=63981632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810315224.XA Active CN108769880B (en) | 2018-04-10 | 2018-04-10 | Screen sounding structure for terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108769880B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110366077A (en) * | 2019-07-19 | 2019-10-22 | Oppo广东移动通信有限公司 | Vocal structure and display panel in a kind of screen |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201242856Y (en) * | 2008-07-21 | 2009-05-20 | 王人庆 | Polyphony automobile motor operated horn |
| CN102075828A (en) * | 2010-12-06 | 2011-05-25 | 中国船舶重工集团公司第七一五研究所 | Underwater very low frequency (VLF) broadband sound source |
| CN102395090A (en) * | 2011-08-30 | 2012-03-28 | 东莞市亿达音响制造有限公司 | Method for preparing magnetically-driven piston type low-frequency speaker system and magnetically-driven piston type low-frequency speaker system |
| US20120119122A1 (en) * | 2010-11-16 | 2012-05-17 | Yuan-Mei Corp. | Magnetic control valve |
| CN202663535U (en) * | 2012-05-17 | 2013-01-09 | 瑞声光电科技(常州)有限公司 | Screen sounder |
-
2018
- 2018-04-10 CN CN201810315224.XA patent/CN108769880B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201242856Y (en) * | 2008-07-21 | 2009-05-20 | 王人庆 | Polyphony automobile motor operated horn |
| US20120119122A1 (en) * | 2010-11-16 | 2012-05-17 | Yuan-Mei Corp. | Magnetic control valve |
| CN102075828A (en) * | 2010-12-06 | 2011-05-25 | 中国船舶重工集团公司第七一五研究所 | Underwater very low frequency (VLF) broadband sound source |
| CN102395090A (en) * | 2011-08-30 | 2012-03-28 | 东莞市亿达音响制造有限公司 | Method for preparing magnetically-driven piston type low-frequency speaker system and magnetically-driven piston type low-frequency speaker system |
| CN202663535U (en) * | 2012-05-17 | 2013-01-09 | 瑞声光电科技(常州)有限公司 | Screen sounder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110366077A (en) * | 2019-07-19 | 2019-10-22 | Oppo广东移动通信有限公司 | Vocal structure and display panel in a kind of screen |
| CN110366077B (en) * | 2019-07-19 | 2021-01-26 | Oppo广东移动通信有限公司 | Screen internal sounding structure and display panel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108769880B (en) | 2020-07-24 |
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