CN210954598U - Library's 3D projection curtain - Google Patents
Library's 3D projection curtain Download PDFInfo
- Publication number
- CN210954598U CN210954598U CN201922392333.4U CN201922392333U CN210954598U CN 210954598 U CN210954598 U CN 210954598U CN 201922392333 U CN201922392333 U CN 201922392333U CN 210954598 U CN210954598 U CN 210954598U
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- projection
- scroll
- library
- mounting frame
- curtain
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Abstract
The utility model relates to a library's field. Aim at provides a coordinated type library 3D projection curtain with high stability. The screen comprises a square mounting frame, wherein a set of liftable projection screen is arranged on the inner surface of each side of the mounting frame; the projection curtain comprises a scroll, a cloth body wound on the scroll and a counterweight rod arranged at the lower end of the cloth body; bevel gears are arranged at two ends of the scroll shafts, four scroll shafts of the four projection curtains are distributed in a square shape, and the bevel gears at the end parts of two adjacent scroll shafts are meshed with each other; one of the four scroll shafts is in transmission connection with a winding motor fixedly arranged on the outer wall of the mounting frame. The utility model discloses a winding motor drives four sets of projection curtains and goes up and down, and compact structure is reasonable, has realized the synchronous rolling of four sets of projection curtains under the prerequisite that does not increase the power supply, has reduced the fault rate.
Description
Technical Field
The utility model relates to a library's field, concretely relates to library's 3D projection curtain.
Background
The library is a mechanism for collecting, arranging and collecting book data for people to read and reference, appears 3000 years before the Gongyuan, and has the functions of preserving human cultural heritage, developing information resources, participating in social education and the like. At present, most of traditional libraries are paper libraries, and with the rapid development of information technology and multimedia technology in recent years, the traditional paper libraries can not meet the increasing reading requirements of people more and more.
Therefore, the inventor develops a ceiling type reading bin suitable for a library, the ceiling type reading bin carries out four-side three-dimensional display on book videos, pictures and the like in a multi-side projection mode, but mechanical faults and electrical faults are easy to occur in the using process due to the fact that the adopted number of projection screens is large and the conventional projection screens operate independently, and certain influence is caused on normal use of equipment.
Disclosure of Invention
An object of the utility model is to provide a coordinated type library 3D projection curtain with high stability.
In order to achieve the purpose of the invention, the technical scheme adopted by the utility model is as follows: A3D projection curtain of a library comprises a square mounting frame, wherein a set of liftable projection curtain is arranged on the inner surface of each side of the mounting frame;
the projection curtain comprises a scroll, a cloth body wound on the scroll and a counterweight rod arranged at the lower end of the cloth body; bevel gears are arranged at two ends of the scroll shafts, four scroll shafts of the four projection curtains are distributed in a square shape, and the bevel gears at the end parts of two adjacent scroll shafts are meshed with each other; one of the four scroll shafts is in transmission connection with a winding motor fixedly arranged on the outer wall of the mounting frame.
Preferably, still the cover is equipped with the curtain bearing on the global that the both ends of spool are close to bevel gear department, the curtain bearing passes through the inner wall connection of quarter butt and installing frame.
Preferably, the counterweight rod extends along the width direction of the cloth body, and the section of the counterweight rod is square; an adsorption cavity is arranged in the middle of the counterweight rod, and the bottom surface of the adsorption cavity is formed by a rubber sheet and is flush with the bottom surface of the counterweight rod; the top of sheet rubber is provided with the lifter plate, the lifter plate is connected with the sheet rubber through a plurality of evenly distributed's short column, and the top of lifter plate still is provided with adjusting bolt, adjusting bolt wears to establish in the threaded hole of counterweight rod top surface, and adjusting bolt's upper end is provided with the head of screwing soon, and the lower extreme passes through rotary joint and is connected with the lifter plate.
Preferably, the screwing head is an inner hexagonal screwing head.
The beneficial effects of the utility model are concentrated and are embodied in:
four sets of projection curtains are driven to lift through a winding motor, the structure is compact and reasonable, synchronous winding of the four sets of projection curtains is realized on the premise of not increasing a power source, and the failure rate is reduced. Particularly, the utility model discloses in the use, drive a spool through the rolling motor and rotate, because the spool of four sets of projection curtains adopts the square to arrange, and the tip passes through bevel gear and links to each other, so a spool rotates, can realize the synchronous linkage of many pivots. Simultaneously, because this kind of square spool arrangement mode makes and forms the spatial transmission structure of spacing each other between the spool, so overall stability obtains very big promotion, and the fault rate is extremely low. Compared with the traditional independent driving mode, the device cost is saved, and the fault risk caused by excessive electric elements is reduced.
Drawings
FIG. 1 is a schematic view of a ceiling-mounted reading receptacle;
FIG. 2 is a bottom view of FIG. 1;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a schematic view of the counterweight rod;
FIG. 5 is an enlarged view of portion B of FIG. 4;
FIG. 6 is a schematic structural view of a paper book storage shelf;
FIG. 7 is a top view of FIG. 6;
FIG. 8 is a schematic view of the installation of the bead;
FIG. 9 is a schematic view of the installation of the first and second hinge eyes;
FIG. 10 is a schematic view of a rotary reading platform;
fig. 11 is a top view of fig. 10.
Detailed Description
An intelligent reading library as shown in fig. 1-11 comprises a central server set installed in the library and a plurality of situation reading devices for displaying electronic book data stored in the central server set. The central server unit generally comprises a plurality of servers, stores electronic versions of electronic books and related audio and video data such as sounds, pictures and videos, can adopt 2D videos, 3D videos and the like, and can be watched by wearing 3D eyes in a matching mode when 3D videos are adopted. The utility model discloses a projected mode carries out multi-angle stereographic playing show to the image data, and 6 loads on of projecting apparatus are in situation reading device.
The utility model discloses a huge difference with traditional projection mode existence is, adopts the multi-angle solid to encircle the projection, compares with traditional curtain projection alone, and the bandwagon effect is better, makes the reader be on the spot. And the traditional wall-hung projection is abandoned, and the ceiling type projection is adopted. Specifically, as shown in fig. 1, each of the situation reading devices includes a ceiling-type reading bin 1 and a rotary reading platform 2 correspondingly disposed below the ceiling-type reading bin 1, and the ceiling-type reading bin 1 is arranged at the top, does not occupy the ground space in the rolling state, and provides possibility for installation and adaptation of other devices and flexible selection of reading positions of readers. Of course, the utility model discloses still can arrange rotation type reading platform 2 in pairs and use, make the reader can carry out the rotation in a circumferential direction, cooperation circumference stereographic projection builds lifelike visual experience.
The rotary reading platform 2 is used as a carrying device of a reader, and functional devices such as a seat, a reading table and the like can be synchronously carried on the rotary reading platform 2, the rotary reading platform 2 can be a conventional rotary platform 2 sold in the market, and as shown in fig. 10 and 11, the rotary reading platform 2 comprises a base 46 and a rotary disk 47 arranged above the base 46, the base 46 is used as an installation base, and the rotary disk 47 is used as a rotary component. Since the rotary reading platform 2 needs to bear the weight of the reader, and also needs to bear the weight of functional components such as a seat and a reading table, the stability and smoothness of the rotary reading platform are greatly tested. Therefore, the utility model discloses optimize the improvement on traditional rotary platform's basis.
Specifically, a mounting groove is formed in the center of the top of the base 46, a rotating motor 48 is arranged in the mounting groove, an output end of the rotating motor 48 faces upward and is fixedly connected with the bottom surface of the rotating disc 47 to drive the rotating disc 47, and the rotating motor 48 is controlled by a platform controller 52. That is, a control slot is further disposed in the base 46, a platform controller 52 is disposed in the control slot, and the platform controller 52 is directly connected to the central server unit in a communication manner. The user directly logs in the reading software platform of the central server machine set through the reading terminal (such as a mobile phone, a PC and the like), the central server machine set controls the rotary reading platform 2 of each situation reading device, and the communication mode can adopt a wireless communication mode such as Bluetooth, WIFI and the like or directly adopts wired communication connection.
Still be provided with flat bearing 49 between rotary disk 47 in the mounting groove outside and the base 46, flat bearing 49's upper segment is connected with rotary disk 47, and the hypomere is connected with base 46, in order to improve flat bearing 49 self location's accuracy and stability, sets up shoulder or annular at base 46's upper surface best, installs flat bearing 49 direct localization at shoulder or annular. The edge of the rotating disc 47 is bent downward to form a bead portion 50, the bead portion 50 serves as a protection for the surrounding edge, and serves as another connecting portion between the rotating disc 47 and the base 46, and as shown in fig. 10, a platform bearing 51 is provided between the bead portion 50 and the circumferential surface of the base 46.
2 rotatory reading platform compact structure stable, rotatory level and smooth and easy, compare with traditional rotary platform and have longer life. Specifically, during use, the rotating motor 48 is activated to rotate the rotating disc 47, and the user stands on the rotating disc 47 and can be rotated by the rotating disc 47. Compare with traditional rotary platform, the utility model discloses a weight mainly bears by flat bearing 49, has improved the atress situation of rotating electrical machines 48 output, and platform bearing 51 is the stress of part also dispersable simultaneously for each atress homodisperse. Rotary disk 47 is at the pivoted in-process, and its stability and smooth and easy nature all obtain very big promotion, and difficult mechanical fault and the damage of taking place have improved the utility model discloses a life.
On this basis, in order to realize sealing between safe edge portion 50 and the ground gap, the utility model discloses can also the subaerial annular rubber safe edge 53 that still is provided with of the safe edge portion 50 outside, if rotatory reading platform 2 adopts fixed mounting's mode, then the bottom and the ground of rubber safe edge 53 can directly bond, go up along pasting on safe edge portion 50. If the rotary reading platform 2 is installed movably for the convenience of moving the rotary reading platform 2, the rubber protecting edge 53 may be installed detachably, such as by fixing with a sucker.
In addition, in order to further improve the utility model discloses to the simulation effect of sight, can also be the border of rotary disk 47 top surface evenly is provided with a plurality of apical groove, each all be provided with a hair dryer 54 in the apical groove. The blower 54 can perform unified downstream centralized control through the platform controller 52 to simulate the blowing effect, and similarly, the foam generator carried on the platform can also simulate the snow, rain and other effects. In order to allow connection of a seat, a reading table or the like, the top surface of the rotary disk 47 may also be provided with a first connection area 55 and a second connection area 56. Of course, the number of connection areas can be increased while the number of functional devices is increased.
Storehouse 1 is read to suspension type is exactly multi-angle situation reading device, and its concrete structure is as follows, including the storehouse body and roof-rack, the top at the library is installed through the roof-rack to the storehouse body. With reference to fig. 1 and 2, the cabin body comprises a square mounting frame 3, and a set of liftable projection curtain is arranged on the inner surface of each side of the mounting frame 3. The projection curtain can rise or fall, and when falling, the four sets of projection curtains enclose a square reading bin together. In view of the sealing and shading of the top of the reading compartment, a ring of curtains as shown in fig. 1 can be arranged on the periphery of the top frame. The utility model discloses center in the installing frame 3 is provided with mounting disc 4, and mounting disc 4 is as the installation base member of projecting apparatus 6, because the utility model discloses a bull projecting apparatus, for improving the holistic stability of mounting disc 4, the center of 3 each sides of installing frame all forms the structure that the four sides supported through a horizontal connecting rod 5 and 4 rigid couplings of mounting disc. The bottom of the mounting disc 4 is provided with a projector 6, the peripheral surface of the projector 6 is provided with four projection heads 7, the four projection heads 7 are respectively opposite to four sets of projection screens, and in order to meet the projection requirements of multiple heads, the projector 6 should be adapted to a corresponding picture synthesizer, a picture splitter and the like, which are the prior art and are not described herein again. The reading bin is also suitable for being provided with a terminal controller, the terminal controller is in communication connection with the central server unit, the communication connection mode preferably adopts wireless, and the wiring process can be omitted. Similarly, functional components (such as the projector 6 and the winding motor 18) of the reading bin can be bridged with the central server unit through the terminal controller, and in order to realize audio playing, a sound 99 or other functional components can be further installed on the installation frame 3.
The utility model discloses utilize 6 four sets of projection curtains of cooperation of projecting apparatus of four-head, carry out three-dimensional show to author's creation environment, creation history, creation mood through picture, video form, realized the situation and reappeared, very big promotion user read interest, improved user's reading enthusiasm, realized the wisdom in the real meaning and read, intelligence is read, has richened the function in library, is an important component part in intelligence interest library. Just the utility model discloses a storehouse is read to suspension type 1, and occupation space is little, and layout structure is reasonable, does not influence the overall structure in library, is convenient for reform transform the improvement to current library, reforms transform with low costsly, facilitate promotion and popularization.
About the utility model discloses ceiling type reads concrete connection structure in storehouse 1 and library smallpox, as shown in fig. 1, the roof-rack includes fixed disk 8 and transition dish 9, fixed disk 8 passes through expansion bolts and library's top rigid coupling. A transition disc 9 is arranged right below the fixed disc 8, and the transition disc 9 is connected with the fixed disc 8. Consider that ceiling type reading storehouse 1 still need carry on a series of functional equipment except frames such as installing frame 3, mounting disc 4, in order to improve the stability of its installation, the utility model discloses better way can also be, four bights of installing frame 3 respectively are connected with the side of transition dish 9 through an oblique connecting rod 10, on this basis, in order to further disperse the atress of the connected node between transition dish 9 and the oblique connecting rod 10, better way can also be, the bottom of transition dish 9 still is provided with many chains 11, the upper end and the transition dish 9 of chains 11 are connected, and the lower extreme is connected with mounting disc 4. The bottom surface of transition dish 9 and the top surface of mounting disc 4 correspond the quantity of chain 11 and are provided with the multiunit couple, chain 11 hooks are hung on the couple of transition dish 9 and mounting disc 4. Of course, the chain 11 can also be connected to the transition plate 9 and the mounting plate 4 by means of a joint, a snap or the like. The utility model discloses an adopt horizontal connecting rod 5 and oblique connecting rod 10 to constitute stable multidirectional three-dimensional connection structure between installing frame, mounting disc, the transition dish, stability is good, structural strength is high, and the overall arrangement is compact exquisite, security that can very big improvement installation and use.
In order to adapt to the transformation to the library of different floor heights, the fixed many vertical adjusting screw 12 that are provided with in bottom surface of fixed disk 8, equal adaptation has two adjusting nut 13 on each adjusting screw 12. The transition disc 9 is correspondingly provided with a plurality of screw holes matched with the adjusting screws 12, the adjusting screws 12 penetrate through the screw holes, and the transition disc 9 is locked on the adjusting screws 12 through two adjusting nuts 13 to form positioning. Of course, in order to further improve the safety and prevent the transition plate 9 from sliding down, an adjusting bolt 13 may be additionally arranged on the adjusting screw 12 above and below the transition plate 9 or a large-sized anti-falling safety head may be directly arranged at the lower end of the adjusting bolt 12.
Projection curtain can adopt four sets of projection curtains of independent setting, nevertheless through experimental discovery, the design of this kind of four sets of independent projection curtains is because electric parts's increase, not only the overall cost has great rising, electrical fault appears easily simultaneously, has increased the risk for the use in later stage, has buried certain potential safety hazard. Therefore the utility model discloses a projection curtain design of many sets of linkages, as shown in fig. 1, the projection curtain includes spool 14, the rolling cloth body 15 on spool 14 and sets up the weight lever 16 at cloth body 15 lower extreme. Both ends of the scroll 14 are provided with bevel gears 17, four scrolls 14 of the four projection curtains are in square distribution, and the bevel gears 17 at the end parts of two adjacent scrolls 14 are meshed with each other. One of the four winding shafts 14 is in transmission connection with a winding motor 18 fixedly arranged on the outer wall of the mounting frame 3. As for the installation manner of the winding shaft 14, the simplest method can be adopted, as shown in fig. 3, a curtain bearing 19 is further sleeved on the circumferential surface of the two ends of the winding shaft 14 near the bevel gear 17, and the curtain bearing 19 is connected with the inner wall of the installation frame 3 through a short rod 20.
The utility model discloses a rolling motor 18 drives four sets of projection curtains and goes up and down, and compact structure is reasonable, has realized the synchronous rolling of four sets of projection curtains under the prerequisite that does not increase the power supply, has reduced the fault rate. Particularly, the utility model discloses in the use, drive a spool 14 through rolling motor 18 and rotate, because the spool 14 of four sets of projection curtains adopts the square to arrange, and the tip passes through bevel gear 17 and links to each other, so a spool 14 rotates, can realize the synchronous linkage of many pivots 16. Meanwhile, due to the arrangement mode of the square reels 14, a three-dimensional transmission structure for limiting the reels 14 mutually is formed, so that the overall stability is greatly improved, and the failure rate is extremely low. Compared with the traditional independent driving mode, the device cost is saved, and the fault risk caused by excessive electric elements is reduced.
In addition, considering that the cloth body 15 is simply dropped and straightened by using the weight lever 16, the stability of the cloth body 15 cannot be ensured, for this reason, the utility model discloses a better way can also be, as shown in fig. 4 and 5, the weight lever 16 extends along the width direction of the cloth body 15, and the cross-section of the weight lever 16 is square. An adsorption cavity 21 is arranged in the middle of the counterweight rod 16, the bottom surface of the adsorption cavity 21 is formed by a rubber sheet 22 and is flush with the bottom surface of the counterweight rod 16, and when the rubber sheet 22 on the bottom surface of the adsorption cavity 21 deforms upwards, a negative pressure space can be formed between the ground and the rubber sheet 22, so that the counterweight rod 16 is ensured to be tightly adsorbed on the ground, and the function of a sucking disc is achieved. The weight lever 16 may be long as a whole, and a plurality of adsorption chambers 21 may be provided.
As to how to drive the rubber sheet 22 and deform upwards, the utility model discloses a technical scheme be, as shown in fig. 5, the top of rubber sheet 22 is provided with lifter plate 23, lifter plate 23 is connected with rubber sheet 22 through a plurality of evenly distributed's short column 24, and lifter plate 23's top still is provided with adjusting bolt 25, adjusting bolt 25 wears to establish in the threaded hole of counterweight 16 top surface, and adjusting bolt 25's upper end is provided with and screws head 26 soon, and the lower extreme passes through rotary joint and is connected with lifter plate 23. The screwing head 26 may be an inner hexagonal screwing head, an outer hexagonal screwing head, or the like. The lifting plate 23 can be driven to rise by screwing the adjusting bolt 25, and then the rubber sheet 22 is driven to deform upwards, so that the adsorption is realized.
The utility model discloses an in the practical application process, because the development of smart mobile phone, its basic function has been replaced the PC, so it is a better selection mode as reading terminal equipment with the cell-phone. And to some readers, owing to have certain paper books plot, the event can select to hold paper books and read many times, so the utility model also discloses a can carry on the paper books storage rack on rotatory reading platform 2, of course the paper books storage rack also can use alone, only need to carry out the adaptability to base 28 and change can.
As shown in fig. 6-9, the paper book storage rack comprises an upright, the top end of which is connected with the desk panel 27, and the bottom end of which is connected with the base 28. The pole setting is preferred to adopt telescopic pole setting, and its specific flexible mode can adopt bushing type, eclipsed form etc. as shown in figure 1, the utility model discloses a bushing type structure. The upright rod comprises an outer tube 43 and an inner rod 44, the upper end of the inner rod 44 is provided with a first hinge lug 38, and the lower end of the inner rod is inserted into the outer tube 43. The upper end of the outer tube 43 is provided with a positioning bolt 45, and the lower end is provided with a base 28. Thereby conveniently adjusting the whole height of the paper book storage rack.
In order to expand the function of paper books storage rack to conveniently accomodate books, the fixed book box 29, each of depositing that is provided with in bottom surface of the deck plate 27 left and right sides deposit book box 29 and all be provided with the book box 30 of depositing of a plurality of bars, deposit book box 30's opening and be located deck plate 27's top surface. Paper books which cannot be seen temporarily can be stored in the book storage grid 30, normal use of the table panel 27 is not affected, and in order to facilitate taking out of the books, an upper top plate can be arranged in the book storage grid 30, a touch switch of the upper top plate is arranged at the end part of an opening of the book storage grid 30, and the specific form of the upper top plate can refer to the design of a trash can cover.
In the design of the conventional reading table, the desk panel 27 is usually a simple flat plate, but this way easily causes the spine part to be damaged when the book is opened and bent, especially for the thicker book, and the paper book storage rack of the present invention has a great difference in that the center of the desk panel 27 is provided with a spine hole 31 extending along the width direction of the desk panel 27, and a plurality of supporting rubber strips 32 are uniformly distributed in the spine hole 31 along the length direction of the spine hole 31. The spine hole 31 can be used as a space for clamping the spine, and the spine cannot be damaged.
In order to clamp and fix the pages unfolded by books, a book pressing assembly is arranged at the rear end of the spine hole 31, as shown in fig. 7 and 8, the book pressing assembly comprises a pressing strip 33, the pressing strip 33 extends along the length direction of the table board 27, a handle 34 is arranged at the center of the top surface of the pressing strip 33, sliding rods 35 are arranged on the bottom surfaces of two ends of the pressing strip 33, pressing parts 36 are arranged at the front parts of two ends of the pressing strip 33, and in order to improve the pressing stability, rubber anti-slip layers can be arranged on the bottom surfaces of the pressing parts 36. The slide rod 35 penetrates through a slide hole in the table board 27, an end plate is arranged at the lower end of the slide rod 35, a book pressing spring 37 is further sleeved outside the slide rod 35, and the book pressing spring 37 is located between the end plate and the table board 27. When the book needs to be clamped, the handle 34 is held by hand to lift the bead 33, the pages are clamped below the pressing portions 36, and then the hands are released. Under the action of the book pressing spring 37, the pressing bar 33 drives the pressing part 36 to clamp the pages.
In order to adjust the angle of the platform 27, as shown in fig. 9, a semicircular first hinge lug 38 is disposed at the upper end of the upright, a second hinge lug 39 is disposed at the center of the bottom surface of the platform 27, the first hinge lug 38 and the second hinge lug 39 are hinged by a pin 40, and the pin 40 is opposite to the first hinge lug 38 in a circular shape. A plurality of positioning holes 41 are uniformly formed in the positions, close to the arc-shaped edges, of the first hinge lug 38, a sliding positioning pin 42 is arranged on the second hinge lug 39, and the first hinge lug 38 and the second hinge lug 39 are inserted into the positioning holes 41 through the sliding positioning pin 42 to be positioned. The table board 27 can be rotated by withdrawing the slide positioning pin 42, and the position of the table board 27 can be locked by inserting the slide positioning pin 42 into the corresponding positioning hole 41. In order to further improve the convenience of use, be provided with the pinhole with locating pin 42 matched with on the second hinge lug 39, locating pin 42 wears to establish in the pinhole, locating pin 42 still overlaps outward and establishes positioning spring, positioning spring is located between the head of locating pin 42 and the second hinge lug 39, and both ends respectively with the head of locating pin 42 and second hinge lug 39 rigid coupling.
Claims (4)
1. The utility model provides a library's 3D projection curtain which characterized in that: the screen comprises a square mounting frame (3), wherein a set of liftable projection screen is arranged on the inner surface of each side of the mounting frame (3);
the projection curtain comprises a scroll (14), a cloth body (15) wound on the scroll (14) and a balance weight rod (16) arranged at the lower end of the cloth body (15); bevel gears (17) are arranged at two ends of each scroll (14), four scrolls (14) of the four projection curtains are distributed in a square shape, and the bevel gears (17) at the end parts of two adjacent scrolls (14) are meshed with each other; one of the four reels (14) is in transmission connection with a winding motor (18) fixedly arranged on the outer wall of the mounting frame (3).
2. The library 3D projection curtain of claim 1, wherein: the curtain bearing (19) is further sleeved on the circumferential surface of the two ends of the scroll (14) close to the bevel gear (17), and the curtain bearing (19) is connected with the inner wall of the mounting frame (3) through a short rod (20).
3. The library 3D projection curtain of claim 2, wherein: the counterweight rod (16) extends along the width direction of the cloth body (15), and the section of the counterweight rod (16) is square; an adsorption cavity (21) is arranged in the middle of the counterweight rod (16), and the bottom surface of the adsorption cavity (21) is formed by a rubber sheet (22) and is flush with the bottom surface of the counterweight rod (16); the top of sheet rubber (22) is provided with lifter plate (23), lifter plate (23) are connected with sheet rubber (22) through a plurality of evenly distributed's short column (24), and the top of lifter plate (23) still is provided with adjusting bolt (25), adjusting bolt (25) are worn to establish in the threaded hole of counterweight rod (16) top surface, and the upper end of adjusting bolt (25) is provided with and screws head (26) soon, and the lower extreme passes through rotary joint and is connected with lifter plate (23).
4. The library 3D projection curtain of claim 3, wherein: the screwing head (26) is an inner hexagonal screwing head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922392333.4U CN210954598U (en) | 2019-12-26 | 2019-12-26 | Library's 3D projection curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922392333.4U CN210954598U (en) | 2019-12-26 | 2019-12-26 | Library's 3D projection curtain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210954598U true CN210954598U (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922392333.4U Expired - Fee Related CN210954598U (en) | 2019-12-26 | 2019-12-26 | Library's 3D projection curtain |
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| CN (1) | CN210954598U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113096459A (en) * | 2021-04-16 | 2021-07-09 | 内蒙古农业大学 | Three-dimensional display device of plant specimen |
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2019
- 2019-12-26 CN CN201922392333.4U patent/CN210954598U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113096459A (en) * | 2021-04-16 | 2021-07-09 | 内蒙古农业大学 | Three-dimensional display device of plant specimen |
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Granted publication date: 20200707 Termination date: 20201226 |