CN102523408A - Screen fixing and demounting method and structure thereof - Google Patents
Screen fixing and demounting method and structure thereof Download PDFInfo
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- CN102523408A CN102523408A CN2011103528326A CN201110352832A CN102523408A CN 102523408 A CN102523408 A CN 102523408A CN 2011103528326 A CN2011103528326 A CN 2011103528326A CN 201110352832 A CN201110352832 A CN 201110352832A CN 102523408 A CN102523408 A CN 102523408A
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- electromagnet
- screen
- permanent magnet
- screen frame
- back projection
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Abstract
The invention relates to a screen fixing and demounting method which is characterized by: carrying out energization, deenergization or reverse energization on an electromagnet, and realizing adsorption, separation or repulsion between electromagnets or adsorption, separation or repulsion of a permanent magnet by the electromagnet; in the adsorption, fixing a screen frame; and in the separation or repulsion, demounting the screen frame. The invention also relates to a method which is characterized in that: when the electromagnet is deenergized, the permanent magnet or a magnetic acceptor which is compounded in the electromagnetic adsorbs the permanent magnet, and the screen frame is fixed; the electromagnet is energized, and when expulsive force generated between permanent magnets is larger than magnetic force of adsorption, the screen frame is demounted. The invention also relates to a screen fixing and demounting structure which comprises a screen, the screen frame and a rear projection casing, wherein the screen is fixed on the screen frame; the screen frame and the rear projection casing are installed with paired electromagnets or paired permanent magnet and electromagnet respectively; and when the electromagnets are in adhesion or the permanent magnet and the electromagnet are in adhesion, the screen frame just faces the rear projection casing and is fixed on the rear projection casing. The method and the structure have the advantages of simple structure, firm fixation, convenient assembly and disassembly, and convenient operation, and are suitable the rear projection display field.
Description
Technical field
The present invention relates to the back projection Display Technique, specifically, relate to the method and structure that a kind of screen is fixing and retract.
Background technology
At present; A lot of Control Rooms all use back projection splicing display screen as the large scale display terminal; Because back projection splicing display screen can be realized real seamless spliced; This outclass LCD splicing or PDP splicing, and both also have the splicing slit more than three millimeters at least the back, cause mosaic screen picture displayed associative perception to lose to the greatest extent.
In back projection splicing display screen, the installing and fixing method of screen is to realize seamless spliced key point, and installing and fixing method commonly used is to utilize screen frame to be fixed together screen and back projection casing.The employing adhesive tape is pasted screen and is strained and fixed on screen frame, screen frame is fixed on the back projection casing again.Screen frame is fixed in has following two kinds of methods on the back projection casing:
As shown in Figure 1, after screen 1 was fixed on the screen frame 2, screen frame 2 was connected fixing with back projection casing 3 through set bolt 4.This method needs extra instrument just can realize mounting or dismounting, mounting or dismounting inconvenience; Simultaneously, set bolt 4 can only require the back of back projection casing 3 that the installation and maintenance space is arranged from the back operation of back projection casing 3.
Shown in Figure 2, for the slightly little rear-projection display unit of size, also can use the permanent magnet 5 of pairing that screen frame 2 is adsorbed onto on the back projection casing 3.But need to use sucker to hold screen 1 and pull outward this moment when retracting screen frame 2 together with screen 1, and screen frame 2 is separated with back projection casing 3.Yet, because screen 1 is normally made by organic material, adsorb the method that pulls like this and damage screen 1 easily, cause damage.
Summary of the invention
Technical problem to existing in the prior art the objective of the invention is: provide a kind of can with screen frame and the back projection casing fixedly secures and easily a kind of screen of mounting or dismounting fixing with the method that retracts.
Another object of the present invention is: provide a kind of can with screen frame and the back projection casing fixedly secures and easily a kind of screen of mounting or dismounting fixing with the structure that retracts.
In order to reach first purpose, the present invention adopts following technical scheme:
A kind of screen is fixed and the method that retracts, and screen is fixed on the screen frame; Fix through the electromagnet adhesive of pairing between screen frame and the back projection casing, or fix, or fix through the magnetic acceptor and the electromagnet adhesive of pairing through the permanent magnet and the electromagnet adhesive of pairing; To electromagnet energising, outage or reverse energising, realize between electromagnet or electromagnet to the adhesive of permanent magnet, mutually from or repel each other; To electromagnet energising, outage, realize that electromagnet is to the adhesive of magnetic acceptor or leave mutually; During adhesive, the fixed mask frame; Mutually from or when repelling each other, retract screen frame.
After adopting this method, screen frame and back projection casing are fixed through the magnetic force adhesive, both can adopt many electromagnet adhesives to pairing to fix; Also can adopt many electromagnet and permanent magnet adhesives to fix to pairing; Or adopt many electromagnet and adhesives of magnetic acceptor to fix to pairing, and can also adopt the combination of above-mentioned three kinds of modes to fix at the diverse location of screen frame and back projection casing respectively, produce opposite pole and attract each other; Fixation procedure is convenient and simple, does not need extra instrument.Adjust the size of the electromagnet magnitude of current, can adjust the size of magnetic force, adhesive is firm.Only need during dismounting electromagnet outage elimination magnetic force is got final product, in addition can oppositely switch on to electromagnet (this kind mode is not suitable for the magnetic acceptor), produce the like pole and then the pop screen frame that repel each other, retract conveniently.Said here magnetic acceptor is meant and can be made by ferrimagnet usually by the object of permanent magnet or electromagnet absorption that ferrimagnet comprises iron, cobalt, nickel etc.
Electromagnet power taking in the back projection casing, or supply power by external power supply.Because of being provided with many circuit units and power supply in the back projection casing, so electromagnet can not need the additional configuration external power supply, more compact structure directly from this power supply power taking.
In order to reach first purpose, the present invention also can take following technical scheme:
A kind of screen is fixed and the method that retracts, and screen is fixed on the screen frame; Fix through the electromagnet and the permanent magnet adhesive of pairing between screen frame and the back projection casing; Electromagnet comprises permanent magnet or the magnetic acceptor that is compounded in the electromagnet; During the electromagnet outage, be compounded in permanent magnet or magnetic acceptor and the permanent magnet adhesive of pairing mutually, fixed mask frame in the electromagnet; Electromagnet when energising, and with the permanent magnet of pairing mutually between the repulsion that produces during greater than the magnetic force of adhesive, retract screen frame.
After adopting this method, screen frame is fixed by being compounded in the interior permanent magnet of electromagnet or the magnetic force of magnetic acceptor and permanent magnet adhesive; When electromagnet energising, because of the repulsion that produces like pole and produce during greater than the magnetic force of adhesive, screen frame can retract easily with permanent magnet.This method does not need electromagnet is switched on always, only needs to get final product in the energising at a moment that retracts, and saves energy, easy to operate.
In order to reach second purpose, the present invention adopts following technical scheme:
A kind of screen is fixed and the structure that retracts, and comprising: screen, screen frame and back projection casing; Screen is fixed on the screen frame; Screen frame and back projection casing are equipped with the electromagnet of pairing respectively, or the permanent magnet and the electromagnet of pairing, or the magnetic acceptor and the electromagnet of pairing; During the electromagnet adhesive, or when permanent magnet and electromagnet adhesive, or when magnetic acceptor and electromagnet adhesive, screen frame over against and be fixed on the back projection casing.
After adopting this structure, electromagnet, permanent magnet or magnetic acceptor can be fixed on the installed surface of screen frame and back projection casing, also can be embedded in the installed surface.Only need to realize the mounting or dismounting of screen frame easily together with screen to electromagnet energising, outage or reverse energising.Adopt the permanent magnet of pairing and the structure of electromagnet, or the magnetic acceptor of pairing and the structure of electromagnet, especially to work as all permanent magnets or magnetic acceptor and be positioned on the parts, all electromagnets are positioned on another parts, more compact structure.
When permanent magnet that adopts pairing and electromagnet structure, following three kinds of preferred modes are arranged: permanent magnet is installed on the screen frame, and electromagnet is installed on the back projection casing, and the electromagnet circuit interior with being installed on the back projection casing is electrically connected.Electromagnet is installed on the screen frame, and permanent magnet is installed on the back projection casing, and the electromagnet circuit interior with being installed on the back projection casing is electrically connected.Electromagnet is installed on the screen frame, and permanent magnet is installed on the back projection casing, and electromagnet is electrically connected with external power source.In these three kinds of structures, first kind can power up to electromagnet easily, need not go between on the screen frame, conveniently retracts and deposits.
When electromagnet is installed on the screen frame, and electromagnet is during through the external power source power taking, and following two kinds of preferred modes are arranged: the lateral wall of screen frame is provided with the electrode that is electrically connected with electromagnet; Electromagnet comprises compound permanent magnet or magnetic acceptor within it; During the electromagnet no power, the permanent magnet adhesive on compound permanent magnetism body or magnetic acceptor and the back projection casing, screen frame is fixed on the back projection casing; Electrified body touching electrode makes the electromagnet energising, and the repulsion of generation is during more than or equal to the magnetic force of adhesive, and screen frame retracts from the back projection casing.Screen be provided be electrically connected with electromagnet and be exposed to the outer hard contact of screen; Electromagnet comprises compound permanent magnet or magnetic acceptor within it; During the electromagnet no power, the permanent magnet adhesive on compound permanent magnetism body or magnetic acceptor and the back projection casing, screen frame is fixed on the back projection casing; Electrified body touching hard contact makes the electromagnet energising, and the repulsion of generation is during more than or equal to the magnetic force of adhesive, and screen frame retracts from the back projection casing.Adopt this dual mode,, can produce repulsion, realize the mounting or dismounting of screen frame more than or equal to the magnetic force of adhesive as long as electrified body touches electrode or hard contact.Adopt first kind of mode, electrode should adopt the form of thin slice and be close to the side of screen this moment, and the employing second way can be provided with aperture in the edge of screen, be inlaid with in the hole with screen frame on the hard contact that is connected of electromagnet.
A kind of screen structure fixing and that retract also comprises the device for pre-positioning that is positioned between screen frame and back projection casing.The setting of this device for pre-positioning guarantees screen frame and back projection casing accurately being in place when absorption.Said here device for pre-positioning; Can be locating pin structure, or the structure that matches with recess of protruding position, as long as can realize limiting the displacement on four direction up and down of screen frame and back projection casing; Make screen frame and back projection casing over against; And make between the electromagnet of pairing, the electromagnet of pairing and permanent magnet, or the electromagnet of pairing and the position alignment of magnetic acceptor get final product.Wherein, four direction is positive over against screen with respect to human body up and down.
Generally speaking, the present invention has following advantage: simple in structure, and fixation, mounting or dismounting are convenient, and are easy to operate.
Description of drawings
Fig. 1 is the fixing cutaway view with the structure that retracts of existing screen, wherein is connected through set bolt between screen frame and back projection casing.
Fig. 2 is the fixing cutaway view with the structure that retracts of existing screen, wherein is connected through the permanent magnet adhesive of matching between screen frame and back projection casing.
Fig. 3 is the fixing cutaway view with the structure that retracts of the screen of first kind of execution mode of the present invention.
Fig. 4 is the fixing cutaway view with the structure that retracts of the screen of second kind of execution mode of the present invention.
Fig. 5 is the fixing cutaway view with the structure that retracts of the screen of the third execution mode of the present invention.
Fig. 6 is the partial enlarged drawing of electrode part in the upward view of Fig. 4.
Wherein, 1 is screen, and 2 is screen frame, and 3 is the back projection casing, and 4 is set bolt, and 5 is permanent magnet, and 6 is electromagnet, and 7 is electrode, and 8 is hard contact, and 9 is device for pre-positioning.
Embodiment
To combine accompanying drawing and embodiment to come the present invention is done further detailed explanation below.
Embodiment one
Shown in Figure 3, a kind of screen is fixing to be comprised with the structure that retracts: screen 1, screen frame 2 and back projection casing 3.Wherein screen 1 is fixed on the screen frame 2 through adhesive tape.Be inlaid with a plurality of permanent magnets 5 on the installed surface of screen frame 2, be inlaid with electromagnet 6 on the installed surface of back projection casing 3 with permanent magnet 5 pairings.Electromagnet 6 is by the power supply of the power supply in the back projection casing 3.Be provided with device for pre-positioning 9 between screen frame 2 and the back projection casing 3, protruding position and recess that this device for pre-positioning 9 is provided with for pairing.Screen frame 2 is made by aluminium.
During installation, protruding position being aimed at recess, is electromagnet 6 energisings, makes the different magnetic pole of electromagnet 6 generations and permanent magnet 5, and electromagnet 6 is inhaled with permanent magnet 5 mutually, and screen frame 2 is fixed on the back projection casing 3.When retracting, electromagnet 6 outages, the magnetic force of inhaling mutually disappears, and can screen frame 2 be taken off.Even can oppositely switch on to electromagnet 6, producing the magnetic pole identical with permanent magnet 5, the generation thrust of repelling each other is taken off screen frame 2 thus.
Embodiment two
In the present embodiment shown in Figure 4, electromagnet 6 is embedded on the installed surface of screen frame 2, and permanent magnet 5 is embedded on the installed surface of back projection casing 3.The lateral wall of screen frame 2 has sticked electrode 7 (as shown in Figure 6), and electrode 7 is electrically connected with electromagnet 6, and electrode 7 is a thin electrode.Electromagnet 6 is by external power source.Electromagnet 6 itself is compounded with the magnetic acceptor, when electromagnet 6 does not power up, and magnetic acceptor that it is compound and permanent magnet 5 adhesive fixed mask frames 2.Interim electrode 7 when retracting screen frame 2 with electrified body (like charged thin slice) contact screen frame 2 sides; Reach the purpose that powers on to electromagnet 6; At this moment; Electromagnet 6 produces the electrode that repels each other with permanent magnet 5, and its mutual expelling force retracts screen frame 2 thus more than or equal to the attraction of compound magnetic acceptor and permanent magnet 5.The not mentioned mode of present embodiment is with embodiment one.
Embodiment three
In the present embodiment shown in Figure 5, electromagnet 6 is embedded on the installed surface of screen frame 2, and permanent magnet 5 is embedded on the installed surface of back projection casing 3.Screen 1 is provided with hard contact 8, and concrete structure is: screen 1 submarginal place is provided with small through hole, and hard contact 8 passes this through hole and is exposed to beyond the screen 1 with after electromagnet 6 is electrically connected.Electromagnet 6 is by external power source.Electromagnet 6 itself is compounded with permanent magnet, when electromagnet 6 does not power up, and its compound permanent magnetism body and permanent magnet 5 adhesive fixed mask frames 2.Interim when retracting screen frame 2 with the hard contact on the electrified body contact screen 18; Reach the purpose that powers on to electromagnet 6, at this moment, electromagnet 6 produces the electrode that repels each other with permanent magnet 5; Its mutual expelling force retracts screen frame 2 thus more than or equal to the attraction of compound permanent magnetism body and permanent magnet 5.
The cross section of hard contact 8 is as far as possible little, and try one's best near the edge of screen 1, to reduce its influence to screen picture in its position simultaneously.
The not mentioned mode of present embodiment is with embodiment one.
Except the mode that the foregoing description is mentioned; The fixing electromagnet that can all adopt pairing between screen frame and the back projection casing; The structure that also can adopt the electromagnet of pairing to combine with the electromagnet and the permanent magnet of pairing; Also can adopt the structure of the electromagnet and the magnetic acceptor of pairing, these conversion are all in protection scope of the present invention.
Claims (10)
1. a screen is fixed and the method that retracts; Screen is fixed on the screen frame; It is characterized in that: fix through the electromagnet adhesive of pairing between screen frame and the back projection casing, or fix, or fix through the magnetic acceptor and the electromagnet adhesive of pairing through the permanent magnet and the electromagnet adhesive of pairing; To electromagnet energising, outage or reverse energising, realize between electromagnet or electromagnet to the adhesive of permanent magnet, mutually from or repel each other; To electromagnet energising, outage, realize that electromagnet is to the adhesive of magnetic acceptor or leave mutually; During adhesive, the fixed mask frame; Mutually from or when repelling each other, retract screen frame.
According to the described a kind of screen of claim 1 fixing with the method that retracts, it is characterized in that: said electromagnet power taking in the back projection casing, or supply power by external power supply.
3. a screen is fixed and the method that retracts, and screen is fixed on the screen frame, it is characterized in that: fix through the electromagnet and the permanent magnet adhesive of pairing between screen frame and the back projection casing; Electromagnet comprises permanent magnet or the magnetic acceptor that is compounded in the electromagnet; During the electromagnet outage, be compounded in permanent magnet or magnetic acceptor and the permanent magnet adhesive of pairing mutually, fixed mask frame in the electromagnet; Electromagnet when energising, and with the permanent magnet of pairing mutually between the repulsion that produces during greater than the magnetic force of adhesive, retract screen frame.
4. a screen is fixed and the structure that retracts, and comprising: screen, screen frame and back projection casing; Screen is fixed on the screen frame, it is characterized in that: screen frame and back projection casing are equipped with the electromagnet of pairing respectively, or the permanent magnet and the electromagnet of pairing, or the magnetic acceptor and the electromagnet of pairing; During the electromagnet adhesive, or when permanent magnet and electromagnet adhesive, or when magnetic acceptor and electromagnet adhesive, screen frame over against and be fixed on the back projection casing.
5. fixing according to the described a kind of screen of claim 4 and retract structure; It is characterized in that: when permanent magnet that adopts pairing and electromagnet structure; Said permanent magnet is installed on the screen frame; Electromagnet is installed on the back projection casing, and the electromagnet circuit interior with being installed on the back projection casing is electrically connected.
6. fixing according to the described a kind of screen of claim 4 and retract structure; It is characterized in that: when permanent magnet that adopts pairing and electromagnet structure; Said electromagnet is installed on the screen frame; Permanent magnet is installed on the back projection casing, and the electromagnet circuit interior with being installed on the back projection casing is electrically connected.
7. fixing according to the described a kind of screen of claim 4 and retract structure; It is characterized in that: when permanent magnet that adopts pairing and electromagnet structure; Said electromagnet is installed on the screen frame, and permanent magnet is installed on the back projection casing, and electromagnet is electrically connected with external power source.
8. fixing according to the described a kind of screen of claim 7 and retract structure, it is characterized in that: the lateral wall of said screen frame is provided with the electrode that is electrically connected with electromagnet; Electromagnet comprises compound permanent magnet or magnetic acceptor within it; During the electromagnet no power, the permanent magnet adhesive on compound permanent magnetism body or magnetic acceptor and the back projection casing, screen frame is fixed on the back projection casing; Electrified body touching electrode makes the electromagnet energising, and the repulsion of generation is during more than or equal to the magnetic force of adhesive, and screen frame retracts from the back projection casing.
According to the described a kind of screen of claim 7 fixing with the structure that retracts, it is characterized in that: said screen be provided with is electrically connected with electromagnet and be exposed to screen hard contact outward; Electromagnet comprises compound permanent magnet or magnetic acceptor within it; During the electromagnet no power, the permanent magnet adhesive on compound permanent magnetism body or magnetic acceptor and the back projection casing, screen frame is fixed on the back projection casing; Electrified body touching hard contact makes the electromagnet energising, and the repulsion of generation is during more than or equal to the magnetic force of adhesive, and screen frame retracts from the back projection casing.
10. fixing according to each described a kind of screen in the claim 4 to 9 and retract structure, it is characterized in that: it also comprises the device for pre-positioning that is positioned between screen frame and back projection casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103528326A CN102523408A (en) | 2011-11-09 | 2011-11-09 | Screen fixing and demounting method and structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103528326A CN102523408A (en) | 2011-11-09 | 2011-11-09 | Screen fixing and demounting method and structure thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102523408A true CN102523408A (en) | 2012-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103528326A Pending CN102523408A (en) | 2011-11-09 | 2011-11-09 | Screen fixing and demounting method and structure thereof |
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| CN (1) | CN102523408A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751070A (en) * | 2012-07-10 | 2012-10-24 | 郜业伟 | Magnetic mounting device and application of magnetic mounting device |
| CN105843384A (en) * | 2016-03-21 | 2016-08-10 | 联想(北京)有限公司 | Control method and system, force action apparatus and electronic device |
| CN106647133A (en) * | 2017-03-17 | 2017-05-10 | 重庆工业职业技术学院 | Magnetic positioning multimedia teaching curtain |
| CN110930892A (en) * | 2019-12-06 | 2020-03-27 | 深圳市瑞丰光电子股份有限公司 | Display screen, display device and control method of display device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101739906A (en) * | 2009-12-28 | 2010-06-16 | 鸿富锦精密工业（深圳）有限公司 | Dual-screen electronic device |
| CN101853616A (en) * | 2010-03-02 | 2010-10-06 | 鸿富锦精密工业（深圳）有限公司 | Dual-screen electronic device |
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2011
- 2011-11-09 CN CN2011103528326A patent/CN102523408A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101739906A (en) * | 2009-12-28 | 2010-06-16 | 鸿富锦精密工业（深圳）有限公司 | Dual-screen electronic device |
| CN101853616A (en) * | 2010-03-02 | 2010-10-06 | 鸿富锦精密工业（深圳）有限公司 | Dual-screen electronic device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751070A (en) * | 2012-07-10 | 2012-10-24 | 郜业伟 | Magnetic mounting device and application of magnetic mounting device |
| CN105843384A (en) * | 2016-03-21 | 2016-08-10 | 联想(北京)有限公司 | Control method and system, force action apparatus and electronic device |
| US10593457B2 (en) | 2016-03-21 | 2020-03-17 | Lenovo (Beijing) Limited | Control method, force-applying apparatus, electronic device, and system |
| CN106647133A (en) * | 2017-03-17 | 2017-05-10 | 重庆工业职业技术学院 | Magnetic positioning multimedia teaching curtain |
| CN106647133B (en) * | 2017-03-17 | 2018-08-17 | 重庆工业职业技术学院 | A kind of magnetic force position multimedia teaching curtain |
| CN110930892A (en) * | 2019-12-06 | 2020-03-27 | 深圳市瑞丰光电子股份有限公司 | Display screen, display device and control method of display device |
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Application publication date: 20120627 |