CN110415624B - Strong-stability ground-type scroll for easy-to-draw treasures - Google Patents
Strong-stability ground-type scroll for easy-to-draw treasures Download PDFInfo
- Publication number
- CN110415624B CN110415624B CN201910669623.0A CN201910669623A CN110415624B CN 110415624 B CN110415624 B CN 110415624B CN 201910669623 A CN201910669623 A CN 201910669623A CN 110415624 B CN110415624 B CN 110415624B
- Authority
- CN
- China
- Prior art keywords
- ground
- support column
- clamping block
- scroll
- outer sleeve
- 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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Links
- 230000008093 supporting effect Effects 0.000 claims abstract description 18
- 239000004568 cement Substances 0.000 claims abstract description 8
- 239000000919 ceramic Substances 0.000 claims abstract description 8
- 239000002689 soil Substances 0.000 claims abstract description 3
- 238000001125 extrusion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 14
- 230000002787 reinforcement Effects 0.000 abstract description 4
- 230000001965 increasing effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 241000574149 Podotheca Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F15/00—Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like
- G09F15/0006—Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like planar structures comprising one or more panels
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F15/00—Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like
- G09F15/0006—Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like planar structures comprising one or more panels
- G09F15/0012—Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like planar structures comprising one or more panels frames therefor
Abstract
The invention discloses a seat type scroll with high stability for a pull-up device, which comprises a seat scroll, wherein propaganda newspaper is arranged on the scroll in the seat scroll, two bases are symmetrically fixed at the bottom of the seat scroll and are connected with the bottom of the seat scroll through rotating shafts, supporting columns are arranged on two sides of the seat scroll, an inner groove is formed in the base, a through hole is formed in the bottom of the base, and the inner groove is communicated with the through hole. The invention is provided with the support column and the plugboard, can well be used on the ground such as cement ground, ceramic tile ground and the like through the action of the support column, and can well be used on the soil ground through the action of the plugboard, the two modes can both strengthen the fixing effect on the ground reel, so that the ground reel has strong stability, and the proper reinforcement mode can be selected according to the different used ground, thereby being convenient for adjustment and use.
Description
Technical Field
The invention relates to the technical field of easy-to-draw treasures, in particular to a seat-type reel with high stability for easy-to-draw treasures.
Background
The utility model provides a roll that easy-to-draw treasures or call poster frame, show shelf, also called easy-to-draw frame in the advertising industry, easy-to-draw roll etc. is a vertical propaganda poster, and its structure is a reel on ground, upwards is a telescopic column by ground, and the post top has a knot, pulls out a vertical poster by the reel during the use. When in use, the roll is usually fixed on the ground through a roll shaft on the ground, so the roll shaft on the ground is a very important component for the roll.
However, the prior art has the following disadvantages:
1. the bottom of the scroll of the easy-to-pull baby seat in the market at present is mainly provided with only one supporting base, and when the scroll is used, the fixing effect is not strong and the scroll is easy to topple;
2. when the device is used, different reinforcement modes cannot be changed well according to different used floors, and the device is inconvenient to adjust and use.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides the seat type scroll with high stability for the baby easy to pull, and solves the problems that the fixing effect is not strong and the baby easy to pull can not be used in different reinforcement modes according to the different used floors when the scroll of the seat type easy to pull on the market is used at present.
(II) technical scheme
In order to achieve the above purpose, the present invention provides the following technical solutions: the seat type scroll with high stability for the easy-to-draw baby comprises a seat type scroll, wherein propaganda newspaper is arranged on the scroll inside the seat type scroll, two bases are symmetrically fixed at the bottom of the seat type scroll and are connected with the bottom of the seat type scroll through rotating shafts, support columns are arranged at two sides of the seat type scroll,
an inner groove is formed in the base, a through hole is formed in the bottom of the base, the inner groove is communicated with the through hole, through grooves are formed in the surfaces of two ends of the floor reel, the inner groove is communicated with the through grooves, an inserting plate is arranged in the inner groove, pedals are fixed on the surfaces of two ends of the inserting plate, and the pedals transversely penetrate through the grooves;
one end of the support column is connected with the ground scroll through the fixed block, be connected through the pivot between support column and the fixed block, the bottom cover of the other end of support column is equipped with the podotheca, is close to the fixed block the telescopic link is installed to one side of support column, the one end of telescopic link forms swing joint with the support column through the connecting piece, the other end of telescopic link is fixed with the table wall of ground scroll mutually.
Preferably, every two support columns are in a group, the two support columns in each group are symmetrically arranged relative to the longitudinal central axis of the ground reel, the support columns and the ground reel form a movable structure through a rotating shaft, and the movable angle range of the support columns is 0-30 degrees.
Preferably, the bottom of the plugboard is uniformly provided with plugbars with needle structures, and the plugbars cross through holes.
Preferably, the foot cover is made of rubber, a detachable structure is formed between the foot cover and the support column, and the foot cover is tightly combined with the support column.
Preferably, the telescopic link includes outer loop bar, embedded rod, draw-in hole, fluting, fixture block and spring, the internally mounted of outer loop bar has embedded rod, the draw-in hole has all been seted up at the both ends of outer loop bar, the fluting has been seted up to the inside of the built-in end of embedded rod, grooved inside card is equipped with the fixture block, the fixture block passes through spring and grooved inner wall and forms fixed connection.
Preferably, the clamping block and the embedded rod form a telescopic structure through a spring, the size of the clamping block is matched with the size of the clamping hole, when the clamping block traverses the clamping hole at the outermost end of the outer sleeve rod, the inclination angle of the support column is 30 degrees, and when the clamping block traverses the clamping hole at the innermost end of the outer sleeve rod, the inclination angle of the support column is 0 degrees.
(III) beneficial effects
The invention provides a seat-type scroll with high stability for a roll baby, which has the following beneficial effects:
(1) The invention is provided with the support column and the plugboard, can well be used on the ground such as cement ground, ceramic tile ground and the like through the action of the support column, and can well be used on the soil ground through the action of the plugboard, the two modes can both strengthen the fixing effect on the ground reel, so that the ground reel has strong stability, and the proper reinforcement mode can be selected according to the different used ground, thereby being convenient for adjustment and use.
(2) When the clamping block is used on the ground such as cement ground and ceramic tile ground, the clamping block is pressed inwards, the clamping block is separated from the clamping hole at the innermost end of the outer sleeve rod, the spring is extruded into the groove, then the support column is pulled outwards immediately by the driving of the rotating shaft, the embedded rod extends outwards in the outer sleeve rod until the support column is pulled to the outermost side, the clamping block just reaches the clamping hole at the outermost end of the outer sleeve rod, at the moment, the compressed spring is restored to deform to provide a reverse acting force for the clamping block, the clamping block is promoted to traverse the clamping hole at the outermost end of the outer sleeve rod, the purpose of fixing the inclined support column is achieved, and both sides of the ground reel have supporting force in the inclined direction by the supporting action of the support column, so that the fixing effect on the ground reel is enhanced.
(3) According to the invention, the foot sleeves are sleeved at the bottoms of the support columns, and are made of rubber materials, so that on one hand, the friction force between the support columns and the ground is increased by the action of the foot sleeves, and therefore, the friction force between the ground reel and the ground is increased, the stability of the ground reel is indirectly improved, on the other hand, the wear-resisting effect of the support columns is also improved, the damaged foot sleeves are also convenient to replace after long-term use, and the service life of the support columns is prolonged.
(4) When the invention is used on the earth ground, the pedals on two sides of the base are directly stepped down, so that the inserted rods at the bottom of the inserting plate in the inner groove in the base are tightly inserted into the stratum by crossing the through holes, thereby stably fixing the ground reel on the ground, enhancing the fixing effect on the ground reel and improving the stability of the ground reel through the action of the inserting plate.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a side view of the internal structure of the base of the present invention;
FIG. 4 is a block diagram of a telescopic rod of the present invention;
fig. 5 is an enlarged view of the structure of fig. 4 at a in accordance with the present invention.
The reference numerals in the drawings are: 1. a ground reel; 2. propaganda report; 3. a base; 4. a rotation shaft; 5. a support column; 6. an inner tank; 7. a through hole; 8. a through groove; 9. inserting plate; 10. a pedal; 11. a fixed block; 12. a rotating shaft; 13. a foot cover; 14. a telescopic rod; 1401. an outer sleeve rod; 1402. an embedded rod; 1403. a clamping hole; 1404. slotting; 1405. a clamping block; 1406. a spring; 15. and a connecting piece.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-5, the present invention provides a technical solution: the utility model provides a seat ground type spool that easy-to-draw treasures used stability is strong, including seat ground spool 1, propaganda newspaper 2, the base 3, rotation axis 4, support column 5, inside groove 6, through-hole 7, logical groove 8, picture peg 9, footboard 10, fixed block 11, pivot 12, podotheca 13, telescopic link 14 and connecting piece 15, install propaganda newspaper 2 on the spool in seat ground spool 1 inside, the bottom symmetry of seat ground spool 1 is fixed with two base 3, base 3 is connected with the bottom of seat ground spool 1 through rotation axis 4, support column 5 has all been installed to both sides of seat ground spool 1, support column 5 every two are a set of, two support columns 5 in every group are all set up with the longitudinal axis symmetry of seat ground spool 1, support column 5 passes through pivot 12 and seat ground spool 1 constitutes movable structure, the angle scope of support column 5 activity is 0-30, through the effect of pivot 12, be convenient for outwards pull support column 5 support for both sides of seat ground spool 1 all possess the supporting force in the tilting direction, the effect to seat ground spool 1 has been strengthened,
an inner groove 6 is formed in the base 3, a through hole 7 is formed in the bottom of the base 3, the inner groove 6 is communicated with the through hole 7, through grooves 8 are formed in the surfaces of two ends of the ground reel 1, the inner groove 6 is communicated with the through grooves 8, inserting plates 9 are arranged in the inner groove 6, inserting rods of needle structures are uniformly distributed at the bottoms of the inserting plates 9, the through holes 7 are traversed by the inserting rods, when the pedal 10 on two sides of the base 3 is directly stepped down in use on the earth ground, the inserting rods at the bottoms of the inserting plates 9 in the inner groove 6 in the base 3 are traversed by the through holes 7 and tightly inserted into a stratum, so that the ground reel 1 is stably fixed on the ground, the fixing effect on the ground reel 1 is enhanced under the action of the inserting plates 9, the pedals 10 are fixed on the surfaces of two ends of the inserting plates 9, and the pedals 10 transversely penetrate through the grooves 8;
one end of the support column 5 is connected with the ground scroll 1 through the fixed block 11, the support column 5 is connected with the fixed block 11 through the rotating shaft 12, a foot sleeve 13 is sleeved at the bottom of the other end of the support column 5, the foot sleeve 13 is made of rubber materials, a detachable structure is formed between the foot sleeve 13 and the support column 5, the foot sleeve 13 is tightly combined with the support column 5, in the use process, on one hand, the friction force between the support column 5 and the ground is increased through the action of the foot sleeve 13, thereby increasing the friction force between the ground scroll 1 and the ground, indirectly improving the stability of the ground scroll 1, on the other hand, the wear-resisting effect of the support column 5 is also improved, a telescopic rod 14 is arranged at one side of the support column 5 close to the fixed block 11, the telescopic rod 14 comprises an outer sleeve rod 1401, an inner sleeve 1402, a clamping hole 1403, a clamping block 1405 and a spring 1406, the inner embedded rod 1402 is arranged in the outer sleeve 1401, clamping holes 1403 are formed at two ends of the outer sleeve 1401, the inside of the built-in end of the embedded rod 1402 is provided with a slot 1404, a clamping block 1405 is clamped in the slot 1404, the clamping block 1405 is fixedly connected with the inner wall of the slot 1404 through a spring 1406, the clamping block 1405 and the embedded rod 1402 form a telescopic structure through the spring 1406, the size of the clamping block 1405 is matched with the size of the clamping hole 1403, when the clamping block 1405 traverses the clamping hole 1403 at the outermost end of the outer sleeve rod 1401, the inclination angle of the supporting column 5 is 30 degrees, when the clamping block 1405 traverses the clamping hole 1403 at the innermost end of the outer sleeve rod 1401, the inclination angle of the supporting column 5 is 0 degree, when the clamping block 1405 traverses the inner end of the outer sleeve rod 1401, when the clamping block is used on the ground such as cement ground, ceramic tile ground and the like, the clamping block 1405 is pressed inwards, the clamping block 1405 is separated from the innermost clamping hole 1403 of the outer sleeve rod 1401, the spring 1406 is extruded into the inside of the slot 1404, then the clamping block 1405 is pulled outwards by the driving of the rotating shaft 12, the inner sleeve rod 1402 extends outwards, until the support column 5 is pulled to the outermost side, the clamping block 1405 just reaches the clamping hole 1403 at the outermost end of the outer sleeve rod 1401, at this time, the compressed spring 1406 is restored to deform to provide a reverse acting force for the clamping block 1405, so that the clamping block 1405 is driven to traverse the clamping hole 1403 at the outermost end of the outer sleeve rod 1401, the purpose of fixing the inclined support column 5 is achieved, one end of the telescopic rod 14 is movably connected with the support column 5 through the connecting piece 15, and the other end of the telescopic rod 14 is fixed with the surface wall of the ground reel 1.
Working principle: before the seat type scroll with strong stability for the easy-to-draw treasures is used, firstly, the seat type scroll with strong stability for the easy-to-draw treasures needs to be simply understood in structure, when the seat type scroll is used, firstly, the base 3 parallel to the bottom of the seat scroll 1 and the seat scroll 1 is rotated to be mutually perpendicular to the seat scroll 1 by the driving of the rotating shaft 4, then, according to the ground used, a proper reinforcing mode is selected, when the seat type scroll is used on the cement ground, the ceramic tile ground and the like, the clamping block 1405 is pressed inwards, so that the clamping block 1405 is separated from the clamping hole 1403 at the innermost end of the outer sleeve rod 1401, the compression spring 1406 enters the inside of the groove 1404, then, the supporting column 5 is pulled outwards immediately by the driving of the rotating shaft 12, so that the embedded rod 1402 extends outwards in the inside of the outer sleeve rod 1401 until the supporting column 5 is pulled to the outermost side, and the clamping block 1405 just reaches the clamping hole 1403 at the outermost end of the outer sleeve rod 1401, at this time, the compressed spring 1406 is restored to deform to provide a reverse acting force for the clamping block 1405, so that the clamping block 1405 transversely crosses the clamping hole 1403 at the outermost end of the outer sleeve rod 1401, the purpose of fixing the inclined supporting column 5 is achieved, the supporting force in the inclined direction is provided on both sides of the seat reel 1 through the supporting action of the supporting column 5, the fixing effect on the seat reel 1 is enhanced, in the use process, the friction force between the supporting column 5 and the ground is increased through the action of the foot sleeve 13 made of the rubber material at the bottom of the supporting column 5, the friction force between the supporting column 5 and the ground is increased, the stability of the seat reel 1 is indirectly improved, when the seat reel 1 is used on the earth ground, the pedals 10 at both sides of the base 3 are directly stepped down, the inserting rods at the bottom of the inserting plate 9 in the inner groove 6 in the base 3 transversely penetrate into the stratum tightly through holes 7, and are stably fixed on the ground, by the action of the plugboard 9, the fixing effect on the ground scroll 1 is enhanced, and the stability of the ground scroll 1 is improved.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a seat ground type spool that easy-to-draw is precious with stability is strong, includes seat ground spool (1), its characterized in that: the novel floor scroll comprises a floor scroll body (1), wherein propaganda newspaper (2) is arranged on the scroll body inside the floor scroll body (1), two bases (3) are symmetrically fixed at the bottoms of the floor scroll body (1), the bases (3) are connected with the bottoms of the floor scroll body (1) through rotating shafts (4), support columns (5) are arranged on two sides of the floor scroll body (1), an inner groove (6) is formed in the base (3), a through hole (7) is formed in the bottom of the base (3), the inner groove (6) is communicated with the through hole (7), through grooves (8) are formed in the surfaces of two ends of the floor scroll body (1), inserting plates (9) are arranged in the inner grooves (6), pedals (10) are fixed on the surfaces of two ends of each inserting plate (9), and the pedals (10) transversely penetrate through the through grooves (8). One end of the support column (5) is connected with the ground scroll (1) through a fixed block (11), the support column (5) is connected with the fixed block (11) through a rotating shaft (12), a foot sleeve (13) is sleeved at the bottom of the other end of the support column (5), a telescopic rod (14) is arranged on one side of the support column (5) close to the fixed block (11), one end of the telescopic rod (14) is movably connected with the support column (5) through a connecting piece (15), and the other end of the telescopic rod (14) is fixed with the surface wall of the ground scroll (1);
the bottom of the plugboard (9) is uniformly provided with plugrods of needle-shaped structures, and the plugrods cross through holes (7);
the support column and the plugboard are arranged, the clamping block can be used on cement ground and ceramic tile ground through the action of the support column, when the cement ground and the ceramic tile ground are used, the clamping block is pressed inwards, so that the clamping block is separated from the clamping hole at the innermost end of the outer sleeve rod, the extrusion spring enters the grooved inner part, then the support column is immediately pulled outwards through the driving of the rotating shaft, the inner embedded rod extends outwards in the outer sleeve rod until the support column is pulled to the outermost side, the clamping block just reaches the clamping hole at the outermost end of the outer sleeve rod, at the moment, the compressed spring is restored to deform to provide a reverse acting force for the clamping block, the clamping block is promoted to traverse the clamping hole at the outermost end of the outer sleeve rod, and the purpose of fixing the inclined support column is achieved; the soil-mounted plate can be used on the soil ground through the action of the insertion plate; cement ground, ceramic tile ground and earth ground can all strengthen the fixed to the seat ground spool.
2. The stable floor-mounted reel for a roll-up baby according to claim 1, wherein: every two support columns (5) are in a group, the two support columns (5) in each group are symmetrically arranged relative to the longitudinal central axis of the ground reel (1), the support columns (5) and the ground reel (1) form a movable structure through a rotating shaft (12), and the movable angle range of the support columns (5) is 0-30 degrees.
3. The stable floor-mounted reel for a roll-up baby according to claim 1, wherein: the foot cover (13) is made of rubber, a detachable structure is formed between the foot cover (13) and the support column (5), and the foot cover (13) is tightly combined with the support column (5).
4. The stable floor-mounted reel for a roll-up baby according to claim 1, wherein: the telescopic rod (14) comprises an outer sleeve rod (1401), an inner embedded rod (1402), a clamping hole (1403), a slot (1404), a clamping block (1405) and a spring (1406), wherein the inner embedded rod (1402) is arranged in the outer sleeve rod (1401), the clamping hole (1403) is formed in both ends of the outer sleeve rod (1401), the slot (1404) is formed in the inner portion of the inner embedded end of the inner embedded rod (1402), the clamping block (1405) is clamped in the slot (1404), and the clamping block (1405) is fixedly connected with the inner wall of the slot (1404) through the spring (1406).
5. The stable floor-mounted reel for a roll-up device of claim 4, wherein: the clamping block (1405) and the embedded rod (1402) form a telescopic structure through the spring (1406), the size of the clamping block (1405) is matched with the size of the clamping hole (1403), when the clamping block (1405) traverses the clamping hole (1403) at the outermost end of the outer sleeve rod (1401), the inclination angle of the supporting column (5) is 30 degrees, and when the clamping block (1405) traverses the clamping hole (1403) at the innermost end of the outer sleeve rod (1401), the inclination angle of the supporting column (5) is 0 degrees.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910669623.0A CN110415624B (en) | 2019-07-24 | 2019-07-24 | Strong-stability ground-type scroll for easy-to-draw treasures |
| PCT/CN2019/110052 WO2021012401A1 (en) | 2019-07-24 | 2019-10-09 | High-stability floor type rolling shaft for roll up banner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910669623.0A CN110415624B (en) | 2019-07-24 | 2019-07-24 | Strong-stability ground-type scroll for easy-to-draw treasures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110415624A CN110415624A (en) | 2019-11-05 |
| CN110415624B true CN110415624B (en) | 2024-03-29 |
Family
ID=68362677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910669623.0A Active CN110415624B (en) | 2019-07-24 | 2019-07-24 | Strong-stability ground-type scroll for easy-to-draw treasures |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110415624B (en) |
| WO (1) | WO2021012401A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113178150A (en) * | 2021-04-25 | 2021-07-27 | 刘易坪 | New forms of energy advertisement frame with screen is stable and dust removal function |
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- 2019-10-09 WO PCT/CN2019/110052 patent/WO2021012401A1/en active Application Filing
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| CN208111001U (en) * | 2018-02-08 | 2018-11-16 | 汇展供应链管理（北京）有限公司 | A kind of exhibition tool bracket with illumination functions |
| CN208351827U (en) * | 2018-05-28 | 2019-01-08 | 漳州龙文维克信息技术有限公司 | A kind of environmental and ecological protection billboard being conveniently replaceable |
| CN210167093U (en) * | 2019-07-24 | 2020-03-20 | 南通中发展示器材有限公司 | Base type scroll that stability is strong for easy-to-draw is precious |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110415624A (en) | 2019-11-05 |
| WO2021012401A1 (en) | 2021-01-28 |
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