CN107575442A - A kind of lock body and mosaic screen - Google Patents
A kind of lock body and mosaic screen Download PDFInfo
- Publication number
- CN107575442A CN107575442A CN201710885294.4A CN201710885294A CN107575442A CN 107575442 A CN107575442 A CN 107575442A CN 201710885294 A CN201710885294 A CN 201710885294A CN 107575442 A CN107575442 A CN 107575442A
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- lock body
- fixed seat
- limited block
- locking bar
- block
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 7
- 239000011324 bead Substances 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000013138 pruning Methods 0.000 description 1
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Abstract
The present invention relates to field of LED display, more particularly to a kind of lock body and mosaic screen.A kind of lock body includes fixed seat and locking bar, the side of fixed seat is provided with groove, the bottom wall of groove is provided with the tapped through hole through fixed seat opposite side, the endpiece of locking bar is provided with external thread part, the first section of locking bar is provided with tapered end, tapered end has circumferential neck, external thread part coordinates with tapped through hole screw thread, the tail end of locking bar is placed in groove, tapered end is located at outside fixed seat, lock body also includes the swing handle in fixed seat, the tail end of swing handle and locking bar connects, swing handle driving locking bar rotates in tapped through hole, tapered end is set to carry out displacement relative to fixed seat, circumferential neck is set to be caught in or remove stay according to the distance of tapered end and fixed seat, so that lock body is locked or unlocked.Spliced so as to solve existing mosaic screen by bolts and nuts threaded connection, the problem of causing to dismount inconvenience.
Description
Technical field
The present invention relates to field of LED display, more particularly to a kind of lock body and mosaic screen.
Background technology
In the prior art, mosaic screen is made up of multiple LED display unit spliceds, upper and lower two LED display lists
The splicing of member is fixed by the threaded connection of bolts and nuts, causes dismounting inconvenient.
The content of the invention
In view of the shortcomings of the prior art, the present invention proposes a kind of lock body and mosaic screen, being rotated by swing handle turns locking bar
It is dynamic, and then tapered end is subjected to displacement, stay is caught in or removed, realizes locking or unblock, it is intended to solve existing mosaic screen
Spliced by bolts and nuts threaded connection, the problem of causing to dismount inconvenience.
Technical scheme proposed by the present invention is：
A kind of lock body, including fixed seat and locking bar, the side of the fixed seat are provided with groove, and the bottom wall of the groove is provided with
Through the tapped through hole of the fixed seat opposite side, the endpiece of the locking bar is provided with external thread part, and the first section of the locking bar is provided with
Tapered end, the tapered end have circumferential neck, and the external thread part coordinates with the tapped through hole screw thread, and the tail end of the locking bar is put
In in the groove, the tapered end is located at outside the fixed seat, and the lock body also includes the turning handle in the fixed seat
Hand, the swing handle are connected with the tail end of the locking bar, and the swing handle drives the locking bar in the tapped through hole
Rotate, the tapered end is carried out displacement relative to the fixed seat, according to making the distance of the tapered end and the fixed seat
Circumferential neck is caught in or removed stay, so that the lock body is locked or unlocked.
Further, the swing handle includes linking arm and the grip part located at described linking arm one end, the connection
Arm has cavity volume, is provided with connecting portion in the bottom wall of the cavity volume, the connecting portion is placed in the tail with the locking bar in the groove
End connection.
Further, the tail end both sides of the locking bar prune arc block formed projection, the connecting portion be provided with it is described convex
The slot that block is engaged.
Further, the swing handle also includes annulus, and the annulus is located at the periphery wall of the groove, is placed in institute
State in cavity volume, the external annulus of the annulus are separated by be provided with provided with the first limited block and the second limited block, the madial wall of the cavity volume
Block, the block make the swing handle described first between first limited block and second limited block
Rotated between limited block and second limited block, when first limited block blocks the block, the lock body is locking
State, when second limited block blocks the block, the lock body is the first released state, in the block positioned at described
When first limited block is with the second limited block centre position, the lock body is the second released state.
Further, mark locking mark, the first unblock mark and the second unblock mark, the lock in the fixed seat
Tight mark is located at the grip part position corresponding with the fixed seat when the lock body is locking state, first unblock
Mark is located at the grip part position corresponding with the fixed seat when the lock body is the first released state, second solution
Lock mark is located at the grip part position corresponding with the fixed seat when the lock body is the second released state.
Further, the external annulus of the annulus are additionally provided with first gear teeth, and first gear teeth both ends are along the annulus
External annulus extend respectively to first limited block, second limited block, and the first round tooth position is in first limited block
Side, the block is located at the opposite side of first limited block, and the swing handle also includes banking stop, torsion spring and spacing
Piece cover plate, fixed column is provided with the bottom wall of the cavity volume, rotating shaft is provided with the fixed column, the torsion spring set is located at described solid
On fixed column, the banking stop is sheathed in the rotating shaft, and described banking stop one end is provided with second with first gear teeth meshing
The gear teeth, the banking stop are provided with the first torsion spring hole clipping, and the bottom wall of the cavity volume is provided with the second torsion spring hole clipping, the torque arm of torsion spring one
The first torsion spring hole clipping is caught in, another torque arm is caught in the second torsion spring hole clipping, and the elastic torsion of the torsion spring makes described
Two gear teeth and first gear teeth meshing, second gear teeth and first gear teeth meshing limitation swing handle are from described
The rotation of first limited block to the described second spacing Block direction, the swing handle also include pressing board, and the pressing board is positioned at described
Outside cavity volume, the pressing board has connecting rod, and the connecting rod is stretched into the cavity volume and is connected with the banking stop other end, described
Banking stop cover plate lid is on the cavity volume.
Further, the side wall of the cavity volume opens up jagged, and the connecting rod stretches into the cavity volume through the breach
Interior, the breach supplies the connecting rod movement when pressing the pressing board.
Further, the grip part is provided with skid resistance strip.
Further, the side wall of the fixed seat is provided with the spacing hole that is connected with the tapped through hole, in the spacing hole
Load spacing bead, the periphery wall of the locking bar is provided with the stopper slot being engaged with the spacing bead, and the stopper slot is located at
Between the circumferential neck and the external thread part.
The present invention also provides a kind of mosaic screen, including at least two LED display units, and at least two LED is shown
Screen unit is spliced by above-mentioned lock body.
According to above-mentioned technical scheme, beneficial effect of the present invention：Swing handle, which rotates, makes locking bar in fixed seat along spiral shell
Line rotates, and tapered end is relatively fixed seat and carries out displacement, circumferential neck is caught in or is removed according to the distance of tapered end and fixed seat
The stay coordinated with it, so that lock body is locked or unlocked, pass through bolts and nuts screw thread so as to solve existing mosaic screen
Connection is spliced, the problem of causing to dismount inconvenience.
Brief description of the drawings
Fig. 1 is the stereogram using lock body provided in an embodiment of the present invention；
Fig. 2 is the stereogram using fixed seat provided in an embodiment of the present invention；
Fig. 3 is the stereogram using fixed seat other direction provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram using locking bar provided in an embodiment of the present invention；
Fig. 5 is the installation diagram using swing handle provided in an embodiment of the present invention；
Fig. 6 is the stereogram using linking arm provided in an embodiment of the present invention and grip part；
Fig. 7 is the schematic diagram using annulus provided in an embodiment of the present invention；
Fig. 8 is the stereogram using banking stop provided in an embodiment of the present invention；
Fig. 9 is the stereogram using banking stop cover plate provided in an embodiment of the present invention；
Figure 10 is the stereogram using torsion spring provided in an embodiment of the present invention；
Figure 11 is the structural representation using mosaic screen provided in an embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Figure 1, Figure 2 and Figure 3, the embodiment of the present invention proposes a kind of lock body 1, for LED display unit spliced, peace
On LED display unit, it is engaged and is locked with stay.Lock body 1 includes fixed seat 11, and fixed seat 11 is provided with two
Mounting hole 111, fixed seat 11 are arranged on LED display unit by two mounting holes 111.
The side of fixed seat 11 is provided with groove 112, and the bottom wall of groove 112 sets tapped through hole 113, and tapped through hole 113 is from recessed
The bottom wall of groove 112 is through to the opposite side of fixed seat 11, and tapped through hole 113 is that screw thread is provided with the madial wall of a through hole.
As shown in Figure 1 and Figure 4, lock body 1 also includes locking bar 12, and the endpiece of locking bar 12 is provided with external thread part 121, locking bar 12
First section is provided with tapered end 122, and tapered end 122 has circumferential neck 1221, and the head end of tapered end 122 is provided with oblique circumferential surface, the oblique circumferential surface
With guide effect.
External thread part 121 coordinates with the screw thread of tapped through hole 113, and locking bar 12 is located in fixed seat 11 by tapped through hole 113,
The tail end of locking bar 12 is placed in groove 112, and tapered end 122 is located at outside fixed seat 11.
As shown in Figure 1 and Figure 5, lock body 1 also includes swing handle 13, and swing handle 13 is in fixed seat 11, turning handle
Hand 13 is connected with the tail end of locking bar 12, and swing handle 13 drives locking bar 12 to be rotated in tapped through hole 113, makes tapered end 122 relative
Displacement is carried out in fixed seat 11, swing handle 13, which rotates counterclockwise either to rotate clockwise, makes tapered end 122 away from or close to admittedly
Reservation 11, circumferential neck 1221 is set to be caught in or remove stay according to the distance of tapered end 122 and fixed seat 11, so that lock body 1 is locked
Tight or unblock.
Swing handle 13, which rotates, makes locking bar 12, along threads turn, tapered end 122 is relatively fixed seat 11 in fixed seat 11
Displacement is carried out, circumferential neck 1221 is caught in or remove the locking coordinated with it according to the distance of tapered end 122 and fixed seat 11
Piece, so that lock body 1 is locked or unlocked, spliced so as to solve existing mosaic screen by bolts and nuts threaded connection,
The problem of causing to dismount inconvenience.
As shown in Figure 5 and Figure 6, in the present embodiment, swing handle 13 includes linking arm 131 and grip part 132.Grip part
132 are located at one end of linking arm 131, and linking arm 131 has cavity volume 1311, connecting portion 13111 is provided with the bottom wall of cavity volume 1311,
Connecting portion 13111 is placed in groove 112, and connecting portion 13111 is connected with the tail end of locking bar 12.
In the present embodiment, the tail end both sides of locking bar 12 prune arc block formed projection 123, connecting portion 13111 be provided with
The slot 131111 that projection is engaged, in groove 112, projection 123 inserts slot 131111, is connected to connecting portion 13111
The tail end of locking bar 12.
As shown in figure 5 and figure 7, in the present embodiment, swing handle also includes annulus 133, and annulus 133 is located at groove 112
Periphery wall, be placed in cavity volume 1311.Specifically, the periphery wall of groove 112 is in that the scarce side for pruning arc block is justified, annulus 133
Arc block is embedded with inner ring, annulus 133 is sheathed on the periphery wall of groove 112, makes annulus 112 in the periphery wall of groove 112
It is upper radially fixed.
The external annulus of annulus 133 are separated by provided with the first limited block 1331 and the second limited block 1332.The inner side of cavity volume 1311
Wall is provided with block 13112, and block 13112 is between the first limited block 1331 and the second limited block 1332.Block 13112 can be with
Being moved between the first limited block 1331 and the second limited block 1332, block 13112 limits the angle range of swing handle 13,
Swing handle 12 is set to be rotated between the first limited block 1331 and the second limited block 1332.Block 13112 is in the first limited block
1331 and second move between limited block 1332, and when the first limited block 1331 blocks block 13112, lock body 1 is locking state,
When the second limited block 1332 blocks block 13112, lock body 1 is the first released state, is located at the first limited block in block 13112
1331 and during the second 1332 centre position of limited block, lock body 1 is the second released state.
The 114, first unblock of mark locking mark mark 115 and the second unblock mark 116, locking mark in fixed seat 11
114 are located at grip part 132 and 11 corresponding position of fixed seat when lock body 1 is locking state, and the first unblock mark 115 is located at
Grip part 132 and 11 corresponding position of fixed seat when lock body 1 is the first released state, the second unblock mark 116 are located in lock body 1
For the second released state when grip part 132 and 11 corresponding position of fixed seat.
Locking mark 114 is lock when reaching to allow user to rotate grip part 132 positioned at 11 corresponding position of fixed seat
Body 1 is in locking state.
First unblock mark 115 is located at and 11 corresponding position of fixed seat to allow user to rotate grip part 132 and reach
When, lock body 1 is in the first released state.In order to allow user's quick-replaceable LED display unit, user rotate grip part 132 from
The 114 to the first unblock of locking mark mark 115, makes lock body 1 be in released state, and then dismantle LED display unit.First solution
Lock mark 115 identifies 116 relative to the second unblock, and the angle changing rate that grip part 132 rotates is small, reduces the time required for operation.
Second unblock mark 116 is located at and 11 corresponding position of fixed seat to allow user to rotate grip part 132 and reach
When, lock body 1 is in the second released state.LED display unit in order to facilitate transport LED display unit and after shipping is fast
Speed is installed.When lock body 1 is in the first released state, grip part 132 and the first unblock 115 corresponding, grip parts 132 of mark
In the centre position of lock body 1, straight up, occupy more spaces, lock body 1 is arranged on LED display unit, it has not been convenient to
Transport LED display unit.When lock body 1 is in locking state, grip part 132 identifies 114 corresponding, grip parts 132 with locking
Leftward position in lock body 1, deviation left side direction, lock body 1 are arranged on LED display unit, convenience in transport LED display
Unit, but be inconvenient to LED display unit Fast Installation after transporting, installed, first to be solved lock body 1 after shipping
Locked again after lock, grip part 132 is first just also turned into the first unblock mark 115 from locking mark 114, again will afterwards
Grip part 132 goes to locking mark 114 from the first unblock mark 115, and operation is more complicated.Lock body 1 is in the second released state
When, grip part 132 is corresponding with the second unblock mark 116, and grip part 132 is in the right positions of lock body 1, deviation right side court
To lock body 1 is arranged on LED display unit, convenience in transport LED display unit, LED display list after same convenience in transport
First Fast Installation, is installed after shipping, lock body 1 directly is locked into locking from solution, that is, grip part 132 is solved from second
Lock mark 116 goes to locking mark 114, and operation is fairly simple, settles at one go.
In the present embodiment, the external annulus of annulus 133 are additionally provided with first gear teeth 1333, and the both ends of first gear teeth 1333 are along circle
The external annulus of ring 133 extend respectively into the first limited block 1331, the second limited block 1332, and first gear teeth 1333 are spacing positioned at first
The side of block 1331, block 13112 are located at the opposite side of the first limited block 1331, and first gear teeth 1333 will not with block 13112
Mutually interfered.
As shown in Fig. 5, Fig. 8, Fig. 9 and Figure 10, swing handle 13 also includes banking stop 134, torsion spring 135 and banking stop cover plate
136.Fixed column 13113 is provided with the bottom wall of cavity volume 1311, rotating shaft 131131, fixed column 13113 are provided with fixed column 13113
It is concentric shafts with rotating shaft 131131, the diameter of fixed column 13113 is more than the diameter of rotating shaft 131131, and torsion spring 135 is located at fixed column
On 13113, banking stop 134 is sheathed in rotating shaft 131131, and the one end of banking stop 134 is provided with second engaged with first gear teeth 1333
The gear teeth 1341, banking stop 134 are provided with the first torsion spring hole clipping 1342, and the bottom wall of cavity volume 1311 is provided with the second torsion spring hole clipping 13114, turn round
The torque arm of spring 135 1 is caught in the first torsion spring hole clipping 1342, and another torque arm is caught in the second torsion spring hole clipping 13114, the elasticity torsion of torsion spring 135
Power makes second gear teeth 1341 be engaged with first gear teeth 1333, and second gear teeth 1341 engage limitation swing handle with first gear teeth 1333
13 from the rotation in the direction of first the 1331 to the second limited block of limited block 1332, that is to say, that limits grip part 132 and is marked from locking
Know 114 to rotate to the first 115 directions of unblock mark, avoid improper unblock.
When second gear teeth 1341 engage with first gear teeth 1333, swing handle 13 can be from the first limited block 1331 to
The rotation in the direction of two limited block 1332.
Swing handle 13 also includes pressing board 137, and pressing board 137 is located at outside cavity volume 1311, and pressing board 137 has connecting rod 1371,
Connecting rod 1371 is stretched into cavity volume 1311 and is connected with the other end of banking stop 134, and banking stop cover plate lid 136 is on cavity volume 1311.
User, which presses pressing board 137, can make banking stop 134 overcome the elastic torsion of torsion spring 135 to make second gear teeth in rotating shaft 131131
1341 leave first gear teeth 1333, and the swing handle 13 that lifts restrictions is from the direction of first the 1331 to the second limited block of limited block 1332
Rotate.When user cancels the pressing force of pressing pressing board 137 day, the elastic torsion of torsion spring 135 make again second gear teeth 1341 with
First gear teeth 1333 engage, and limit rotation of the swing handle 13 from the direction of first the 1331 to the second limited block of limited block 1332 again.
In the present embodiment, the side wall of cavity volume 1311 opens up jagged 13115, and connecting rod 1371 is stretched through breach 13115
Enter in cavity volume 1311, breach 13115 supplies the connecting rod 1371 when pressing pressing board 137 to move.Breach 13115 be open width be
The movement of connecting rod 1371 makes second gear teeth 1341 leave first gear teeth 1333.
In the present embodiment, grip part 132 is provided with skid resistance strip 1321.Prevent that hand exists user when rotating grip part 132
Grip part 132 is slided.
In the present embodiment, the side wall of fixed seat 11 is provided with the spacing hole 117 connected with tapped through hole 113, spacing hole 117
Interior to be fitted into spacing bead (not marked in figure), the periphery wall of locking bar 12 is provided with the stopper slot 124 being engaged with spacing bead, limit
Position groove 124 is between circumferential neck 1221 and external thread part 121.The cooperation of spacing bead and stopper slot 124 is to locking bar 12
Mobile progress is spacing.
As shown in figure 11, the embodiment of the present invention also provides a kind of mosaic screen 2, including at least two LED display units 21,
At least two LED display units 21 are spliced by above-mentioned lock body 1.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
1. a kind of lock body, it is characterised in that including fixed seat and locking bar, the side of the fixed seat is provided with groove, the groove
Bottom wall be provided with tapped through hole through the fixed seat opposite side, the endpiece of the locking bar is provided with external thread part, the locking bar
First section be provided with tapered end, the tapered end has circumferential neck, and the external thread part coordinates with the tapped through hole screw thread, the lock
The tail end of bar is placed in the groove, and the tapered end is located at outside the fixed seat, and the lock body also includes being located at the fixed seat
On swing handle, the swing handle is connected with the tail end of the locking bar, and the swing handle drives the locking bar described
Rotated in tapped through hole, the tapered end is carried out displacement relative to the fixed seat, according to the tapered end and the fixed seat
Distance makes the circumferential neck be caught in or remove stay, so that the lock body is locked or unlocked.
2. lock body according to claim 1, it is characterised in that the swing handle includes linking arm and located at the connection
The grip part of arm one end, the linking arm have cavity volume, are provided with connecting portion in the bottom wall of the cavity volume, the connecting portion is placed in institute
State and be connected in groove with the tail end of the locking bar.
3. lock body according to claim 2, it is characterised in that the tail end both sides of the locking bar prune arc block formed it is convex
Block, the connecting portion are provided with the slot being engaged with the projection.
4. lock body according to claim 2, it is characterised in that the swing handle also includes annulus, and the annulus is located at
The periphery wall of the groove, it is placed in the cavity volume, the external annulus of the annulus are separated by be limited provided with the first limited block and second
Position block, the madial wall of the cavity volume is provided with block, the block between first limited block and second limited block,
The swing handle is rotated between first limited block and second limited block, institute is blocked in first limited block
When stating block, the lock body is locking state, and when second limited block blocks the block, the lock body is the first unblock
State, when the block is located at first limited block with the second limited block centre position, the lock body is the second solution
Lock status.
5. lock body according to claim 4, it is characterised in that mark locking mark, the first unblock in the fixed seat
Mark and the second unblock mark, the locking mark are located at the grip part and the fixation when the lock body is locking state
Seat corresponding to position, it is described first unblock mark be located at when the lock body is the first released state the grip part with it is described solid
Position corresponding to reservation, it is described second unblock mark be located at when the lock body is the second released state the grip part with it is described
Position corresponding to fixed seat.
6. lock body according to claim 4, it is characterised in that the external annulus of the annulus are additionally provided with first gear teeth, described
External annulus of first gear teeth both ends along the annulus extend respectively to first limited block, second limited block, and described
One gear teeth are located at the side of first limited block, and the block is located at the opposite side of first limited block, the turning handle
Hand also includes banking stop, torsion spring and banking stop cover plate, is provided with fixed column in the bottom wall of the cavity volume, is provided with the fixed column
Rotating shaft, the torsion spring set is in the fixed column, and the banking stop is sheathed in the rotating shaft, and described banking stop one end is provided with
With second gear teeth of first gear teeth meshing, the banking stop is provided with the first torsion spring hole clipping, and the bottom wall of the cavity volume is provided with the
Two torsion spring hole clippings, the torque arm of torsion spring one are caught in the first torsion spring hole clipping, and another torque arm is caught in the second torsion spring hole clipping, institute
Stating the elastic torsion of torsion spring makes second gear teeth and first gear teeth meshing, and second gear teeth are nibbled with first gear teeth
The limitation swing handle is closed also to wrap from first limited block to the rotation of the described second spacing Block direction, the swing handle
Pressing board is included, the pressing board is located at outside the cavity volume, and the pressing board has connecting rod, and the connecting rod stretches into the cavity volume and institute
The connection of the banking stop other end is stated, the banking stop cover plate lid is on the cavity volume.
7. lock body according to claim 6, it is characterised in that the side wall of the cavity volume opens up jagged, the connecting rod
Stretched into through the breach in the cavity volume, the breach supplies the connecting rod movement when pressing the pressing board.
8. lock body according to claim 2, it is characterised in that the grip part is provided with skid resistance strip.
9. lock body according to claim 1, it is characterised in that the side wall of the fixed seat is provided with to be connected with the tapped through hole
Logical spacing hole, the spacing hole is interior to load spacing bead, and the periphery wall of the locking bar is provided with to be engaged with the spacing bead
Stopper slot, the stopper slot is between the circumferential neck and the external thread part.
10. a kind of mosaic screen, including at least two LED display units, it is characterised in that at least two LED display
Unit is spliced by the lock body described in claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710885294.4A CN107575442A (en) | 2017-09-26 | 2017-09-26 | A kind of lock body and mosaic screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710885294.4A CN107575442A (en) | 2017-09-26 | 2017-09-26 | A kind of lock body and mosaic screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107575442A true CN107575442A (en) | 2018-01-12 |
Family
ID=61038561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710885294.4A Pending CN107575442A (en) | 2017-09-26 | 2017-09-26 | A kind of lock body and mosaic screen |
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| Country | Link |
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| CN (1) | CN107575442A (en) |
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| CN109505835A (en) * | 2018-12-20 | 2019-03-22 | 深圳市格特隆光电股份有限公司 | A kind of electric locking of quick-assembling LED display cabinet and tripper |
| CN110131261A (en) * | 2019-06-03 | 2019-08-16 | 深德彩智能科技(东莞)有限公司 | The attachment device and LED display of LED box |
| CN110131261B (en) * | 2019-06-03 | 2024-05-07 | 深德彩智能科技(东莞)有限公司 | Connecting device of LED box and LED display screen |
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Application publication date: 20180112 |
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