An interactive sand table device fusing naked-eye 3D display

Abstract

This invention discloses an interactive sand table device integrating naked-eye 3D display, belonging to the field of sand table technology. It includes a sand table frame containing several sets of foldable sand table models, which can be unfolded or folded. The sand table frame also includes a replacement component for moving the foldable sand table models. Each foldable sand table model includes a first model plate and a second model plate rotatably connected, and several L-shaped support plates. Each L-shaped support plate has a first sliding block and a second sliding block slidably mounted on it. The first and second model plates rotatably engage with the first and second sliding blocks, respectively. The replacement component includes a tray that can move horizontally and vertically. The sand table frame includes a main frame. The sand table designed by this invention is equipped with multiple sets of modular sand table models with different themes and functions, allowing for rapid disassembly, replacement, and switching of models according to actual usage needs, effectively improving the versatility and reusability of the sand table.

Description

Technical Field

[0001] This invention relates to the field of sand table, and in particular to an interactive sand table device that integrates naked-eye 3D display. Background Technology

[0002] As an important simulation and deduction device that can intuitively present and three-dimensionally display spatial forms and scene relationships, sand tables have been widely used in many important fields such as urban planning display, engineering construction simulation, teaching and training demonstration, military situation simulation, emergency command and dispatch, smart park display, and geological and geomorphological restoration, thanks to their advantages such as high visualization, strong spatial expression and intuitive interactive experience. They have become an indispensable key equipment for presenting solutions, simulation analysis, decision-making and deduction and popular science teaching in various scenarios.

[0003] Traditional sand table models often employ a fixed structural design, with the model and base molded as a single unit. This limits their ability to display only a single theme or fixed scene, resulting in limitations such as limited functionality, poor scalability, and low reusability. Furthermore, existing sand tables with replaceable models generally lack a reasonable storage structure. Spare models must be stored separately, which not only occupies significant space but also increases the risk of damage or loss. The replacement process is cumbersome and inconvenient, failing to meet the practical needs of multi-scene switching, multi-scheme comparison, and flexible demonstrations. With the trend towards diversified display scenarios and integrated functions, traditional sand tables can no longer meet the requirements of flexible replacement, efficient storage, space saving, and multi-functionality. Therefore, developing a new type of sand table with quick model replacement and built-in hidden storage capabilities has significant practical implications and application value. Summary of the Invention

[0004] This invention provides an interactive sand table device that integrates naked-eye 3D display, which can solve the problem in the prior art where the model and sand table base are integrally formed, and can only display a single theme or fixed scene.

[0005] An interactive sand table device integrating naked-eye 3D display includes a sand table frame, in which several sets of folded sand table models are provided. The folded sand table models can be unfolded or folded. The sand table frame also includes a replacement component for moving the folded sand table models. The folding sand table model includes a first model plate and a second model plate that are rotatably connected, and also includes several L-shaped support plates. Each of the L-shaped support plates is slidably provided with a first sliding block and a second sliding block. The first model plate and the second model plate are rotatably engaged with the first sliding block and the second sliding block, respectively.

[0006] The replacement component includes a tray that can move horizontally and vertically. The sand table frame includes a main frame, on which a limiting component is slidably provided. The limiting component can be used to fix the first sliding block and the second sliding block at the same height as the main frame.

[0007] Furthermore, it also includes a base, on which a sand table frame is fixedly mounted, and a folded sand table model is installed on the sand table frame. The invention also includes a 3D display terminal, with a glass cover connecting the 3D display terminal and the sand table frame. The 3D display terminal uses projection fusion, LED screen or naked-eye 3D display technology to accurately match and present three-dimensional digital images, dynamic data and the physical model of the sand table.

[0008] Furthermore, the sand table frame is a rectangular structure, including a main frame, with side frames fixed on both sides of the main frame. The two sides of the main frame and the side frames enclose a rectangular area, and rectangular plates are slidably arranged within the rectangular areas on both sides of the main frame. The rectangular plates can slide outward synchronously.

[0009] Furthermore, a mounting groove is provided on one side of the side frame, and a bidirectional threaded rod is rotatably installed in the mounting groove. The rectangular plates on both sides are slidably installed in the mounting groove, and the two rectangular plates are respectively threaded with the two sides of the bidirectional threaded rod. The bidirectional threaded rod is driven by a first motor.

[0010] Furthermore, the folding sand table model includes a first model plate and a second model plate, which are connected by hinges. The folding sand table model also includes movable bases on both sides, which have the same structure. Each movable base includes an L-shaped support plate with a groove. A first sliding block and a second sliding block are slidably mounted on the groove. The first and second sliding blocks will not move relative to the groove without external force. The first and second sliding blocks are rotatably engaged with the first and second model plates via pivots. An electric roller is rotatably mounted on the bottom of the L-shaped support plate. A mating block is fixed on the side of the L-shaped support plate. A pin is provided at the corresponding position of the first and second sliding blocks, wherein the pin is fixed to the first or second sliding block, and the other sliding block has a hole.

[0011] Furthermore, a base plate is fixedly provided at the bottom inside the main frame, and two sets of first guide rails are fixedly provided on the upper part of the main frame above the base plate. The electric rollers on the folding sand table model can move on the first guide rails. A second guide rail is fixedly and symmetrically provided at the top inside the main frame, and the folding sand table model is installed between the two sets of second guide rails.

[0012] Furthermore, the second guide rails on both sides are provided with through grooves, and the first sliding blocks and the second sliding blocks are provided with mating grooves. The second guide rails are also independently slidably provided with a number of limiting components, including moving components, and pneumatic pins are installed on the moving components.

[0013] Furthermore, the replacement component includes a movable crossbar, which is slidably mounted on the base plate. The sliding connection between the movable crossbar and the base plate includes, but is not limited to, transmission via a threaded rod.

[0014] Furthermore, vertical plates are fixedly provided on both sides of the movable crossbar, and a first threaded rod is rotatably provided on each of the two vertical plates, and a first limiting rod is fixedly provided thereon. The first threaded rods on both sides rotate synchronously.

[0015] Furthermore, the bottoms of the first threaded rods on both sides are coaxially and fixedly provided with first pulleys, and the two first pulleys are connected by a synchronous belt. One of the first pulleys is driven by a motor, and both first threaded rods are threaded with trays.

[0016] The beneficial effects of this invention are: The sand table designed in this invention is equipped with multiple modular sand table models with different themes and functions. The models can be quickly disassembled, replaced and switched according to actual use needs, effectively improving the versatility and reusability of the sand table. Meanwhile, the sand table adopts a built-in hidden storage structure, which can fold and store unused surplus models inside the sand table frame. Without affecting the overall appearance and display effect of the sand table, it significantly reduces the space required for model storage, saves floor space, improves space utilization, and combines practicality, convenience, and aesthetics. Attached Figure Description Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the sand table frame structure of the present invention; Figure 3 This is an enlarged schematic diagram of part A of the present invention; Figure 4 This is a schematic diagram of the sand table frame structure of the present invention; Figure 5 This is an enlarged schematic diagram of part B of the present invention; Figure 6 This is a schematic diagram of the internal structure of the sand table frame of the present invention. Figure I ; Figure 7 This is an enlarged schematic diagram of part C of the present invention; Figure 8 This is a schematic diagram of the folding sand table model structure of the present invention; Figure 9 This is a schematic diagram of the internal structure of the sand table frame of the present invention. Figure II ; Figure 10 This is an enlarged schematic diagram of part D of the present invention; Figure 11 This is a front view of the internal structure of the sand table frame of the present invention; Figure 12 This is an enlarged schematic diagram of part E of the present invention; Figure 13 This is a side view of the internal structure of the sand table frame of the present invention.

[0017] Explanation of reference numerals in the attached figures: 100. Base; 200. Sand table frame; 300. 3D display terminal; 400. Glass cover; 500. Folding sand table model; 101. Main frame; 102. Rectangular plate; 103. Side frame; 104. Mounting slot; 105. Two-way threaded rod; 106. Base plate; 107. First guide rail; 108. Second guide rail; 109. Through slot; 110. Moving component; 111. Pneumatic pin; 112. 113. Moving crossbar; 114. Vertical plate; 115. First threaded rod; 116. First pulley; 117. Synchronous belt; 118. Tray; 501. First model plate; 502. Second model plate; 503. Hinge; 504. L-shaped support plate; 505. First sliding block; 506. Second sliding block; 507. Mating block; 508. Insert rod; 509. Electric roller; 510. Rotating shaft; 511. Slide groove. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figure 1 As shown in the figure, an interactive sand table device integrating naked-eye 3D display provided by an embodiment of the present invention includes a base 100, a sand table frame 200 fixedly mounted on the base 100, and a folded sand table model 500 mounted on the sand table frame 200. The present invention also includes a 3D display terminal 300, and a glass cover 400 connecting the 3D display terminal 300 and the sand table frame 200. The 3D display terminal 300 uses projection fusion, LED screen or naked-eye 3D display technology to accurately match and present three-dimensional digital images, dynamic data and sand table physical models. Its principle is to use image rendering, geometric correction and color fusion to achieve seamless image restoration, intuitively display terrain, buildings, planning schemes and real-time information, enhance the display effect, realize interactive control and scene linkage, and improve the visualization, demonstration and intelligence level of the sand table. The glass cover 400 is used to protect the internal model from dust, touch, bumps and moisture damage, maintain the cleanliness and integrity of the model, improve the overall aesthetics and display quality of the sand table, enhance the display effect and safety, and reduce the later cleaning and maintenance costs.

[0020] Most existing traditional sand table models adopt a fixed, integrated structure. These models are typically made once and permanently installed, making them unsuitable for flexible disassembly, replacement, or updating based on usage scenarios, content, and teaching needs. This single, fixed model suffers from limited display functions, limited applicability, and poor content scalability, failing to meet diverse usage requirements such as switching between multiple themes, comparing multiple solutions, and simulating multiple scenarios. Therefore, this design presents a sand table with a quickly replaceable model. Through modular structural design and detachable model carriers, it allows for the free switching and combination of models with different themes, scales, and functions, significantly improving the sand table's versatility, practicality, and reusability. It can flexibly meet various usage needs such as planning displays, teaching demonstrations, and simulations.

[0021] like Figure 2 As shown, the sand table frame 200 in this embodiment has a rectangular structure, including a main frame 101, as follows: Figure 4 As shown, side frames 103 are fixedly provided on both sides of the main frame 101, and the two sides of the main frame 101 and the side frames 103 enclose a rectangular area, as shown. Figure 2 As shown, rectangular plates 102 are slidably disposed within rectangular areas on both sides of the main frame 101. The rectangular plates 102 can slide outwards synchronously. This embodiment provides a synchronous sliding method for the rectangular plates 102, specifically, as follows... Figure 3 and Figure 5 As shown, a mounting groove 104 is provided on one side frame 103, and a bidirectional threaded rod 105 is rotatably provided in the mounting groove 104. The rectangular plates 102 on both sides are slidably disposed in the mounting groove 104, and the two rectangular plates 102 are respectively threadedly engaged with the two sides of the bidirectional threaded rod 105. The bidirectional threaded rod 105 is driven by a first motor. The specific structure of starting the first motor to drive the bidirectional threaded rod 105 to rotate is a conventional technical means well known to those skilled in the art.

[0022] like Figure 8As shown, the folding sand table model 500 includes a first model plate 501 and a second model plate 502, which are connected by a hinge 503. The folding sand table model 500 also includes movable bases on both sides, which have identical structures. Taking one as an example, the movable base includes an L-shaped support plate 504. The L-shaped support plate 504 has a sliding groove 511, on which a first sliding block 505 and a second sliding block 506 are slidably mounted. The first sliding block 505 and the second sliding block 506 will not move relative to the sliding groove 511 without external force. The first sliding block 505 and the second sliding block 506 are respectively connected to the first model plate 501 and the second model plate 502 via a rotating shaft 510. The L-shaped support plate 504 is equipped with a rotating electric roller 509 at its bottom. A mating block 507 is fixed on the side of the L-shaped support plate 504. A plug rod 508 is provided at the corresponding position of the first sliding block 505 and the second sliding block 506. The plug is fixed to the first sliding block 505 or the second sliding block 506. The other sliding block is provided with a hole. When the first model plate 501 and the second model plate 502 are folded up, the plug rod 508 cooperates with the hole to realize the folding of the first model plate 501 and the second model plate 502. When in use, the first sliding block 505 and the second sliding block 506 are moved to the sides to realize the unfolding of the first model plate 501 and the second model plate 502. After unfolding, the first model plate 501 and the second model plate 502 are spliced ​​together to form a complete three-dimensional model group.

[0023] In this embodiment, the sand table frame 200 can accommodate several folded sand table models 500, such as... Figure 5 and Figure 6 As shown, a base plate 106 is fixedly installed at the bottom of the main frame 101. Two sets of first guide rails 107 are also fixedly installed on the upper part of the main frame 101 above the base plate 106. Electric rollers 509 on the folding sand table model 500 can move on the first guide rails 107. Second guide rails 108 are fixedly and symmetrically installed at the top of the interior of the main frame 101. The folding sand table model 500 is installed between the two sets of second guide rails 108. Figure 7As shown, both sides of the second guide rail 108 are provided with through slots 109. When in use, a specified folding sand table model 500 is selected and moved upward as a whole, so that the first sliding block 505 and the second sliding block 506 on the folding sand table model 500 are inserted into the through slots 109. The portions of the first sliding block 505 and the second sliding block 506 that protrude from the through slots 109 are provided with mating grooves. The second guide rail 108 is also independently slidably provided with several limiting components, including a moving component 110, on which a pneumatic pin is installed. 111. When the first sliding block 505 and the second sliding block 506 both move upward and are inserted into the through groove 109, the pneumatic pin 111 is simultaneously inserted into the mating groove on the first sliding block 505 and the second sliding block 506, thereby installing the folded sand table model 500 at the designated position on the sand table frame 200. At the same time, the moving component 110 is moved, and the moving component 110 drives the first sliding block 505 and the second sliding block 506 to move on the second guide rail 108, further realizing the unfolding of the folded sand table model 500 at the installation position.

[0024] To facilitate the replacement of the folding sand table model 500, this embodiment also includes a replacement component for raising and lowering the folding sand table model 500, such as... Figure 9 and Figure 10 As shown, the replacement component includes a movable crossbar 112, which is slidably mounted on a base plate 106. The sliding connection between the movable crossbar 112 and the base plate 106 includes, but is not limited to, transmission via a threaded rod. Vertical plates 113 are fixedly mounted on both sides of the movable crossbar 112, and first threaded rods 114 are rotatably mounted on both vertical plates 113. A first limiting rod (not marked in the figure) is fixedly mounted on each of the two first threaded rods 114. The two first threaded rods 114 rotate synchronously. This embodiment provides a synchronous rotation method where the bottoms of the two first threaded rods 114 are coaxial and fixedly mounted with first pulleys 115. The two first pulleys 115 are connected by a synchronous belt 116. One of the first pulleys 115 is driven by a motor; that is, when the motor is working, it can drive one of the first pulleys 115 to rotate, and the other first threaded rod 114 will rotate via the synchronous belt 116. Figure 11 and Figure 12 As shown, both first threaded rods 114 are threadedly fitted with trays 117. In use, the trays 117 are used to select and lift the folding sand table model 500. like Figure 13 As shown, this invention can be adapted to several sets of foldable sand table models 500 during use. One set of foldable sand table models 500 can be unfolded and placed on top for display, while the remaining sets of foldable sand table models 500 are folded and stored inside the sand table frame 200. When model replacement is required, such as... Figure 6As shown, firstly, the limiting component that limits the second sliding block 506 moves laterally. During the movement of the limiting component, the second sliding block 506 will move closer to the first sliding block 505, ultimately causing the insertion rod 508 on the second sliding block 506 and the insertion hole on the first sliding block 505 to engage, as shown. Figure 12 As shown, at the same time, the tray 117 on the control replacement component moves to below the mating blocks 507 on both sides of the folding sand table model 500. There are also electromagnets that attract each other between the tray 117 and the mating blocks 507. At this time, all the pneumatic pins 111 retract, that is, the limiting component loses its limit and begins to fall downward under the action of the folding sand table model 500's own gravity, so that the mating blocks 507 on both sides fit tightly with the tray 117. Finally, the first threaded rod 114 drives the tray 117 to move downward, and the tray 117 carries the folding sand table model 500 downward until the folding sand table model 500 is completely hidden inside the sand table frame 200. Finally, by moving the tray 117 on the replacement component laterally to the mating block 507 on another set of folding sand table models 500 to be replaced, the tray 117 drives the folding sand table model 500 to move upward, as shown. Figure 7 As shown, until the second sliding block 506 and the first sliding block 505 are inserted into the through slot 109, the pneumatic pin 111 on the control limiting component is then simultaneously inserted into the mating slots on the first sliding block 505 and the second sliding block 506, driving the limiting component to move and realize the unfolding of the folding sand table model 500, thus completing the display of the new model.

[0025] The sand table designed in this invention is equipped with multiple modular sand table models with different themes and functions. The models can be quickly disassembled, replaced, and switched according to actual usage needs, effectively improving the versatility and reusability of the sand table. At the same time, the sand table adopts a built-in hidden storage structure, which can fold and store unused models inside the sand table frame. Without affecting the overall appearance and display effect of the sand table, it greatly reduces the space required for model storage, saves floor space, improves space utilization, and combines practicality, convenience, and aesthetics.

[0026] In the description of this invention, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "multiple" means two or more.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. An interactive sand table device integrating naked-eye 3D display, characterized in that, The sand table includes a sand table frame (200), which contains several sets of foldable sand table models (500). The foldable sand table models (500) can be unfolded or folded. The sand table frame (200) also contains a replacement component for moving the foldable sand table models (500). The folding sand table model (500) includes a first model plate (501) and a second model plate (502) that are rotatably connected, and also includes several L-shaped support plates (504). Each of the several L-shaped support plates (504) is slidably provided with a first sliding block (505) and a second sliding block (506). The first model plate (501) and the second model plate (502) are rotatably engaged with the first sliding block (505) and the second sliding block (506) respectively. The replacement component includes a tray (117) that can move laterally and vertically. The sand table frame (200) includes a main frame (101). A limiting component is slidably provided on the main frame (101). The limiting component can be used to fix the first sliding block (505) and the second sliding block (506) at the same height as the main frame (101).

2. The interactive sand table device integrating naked-eye 3D display as described in claim 1, characterized in that, It also includes a base (100), on which a sand table frame (200) is fixedly mounted, and a folded sand table model (500) is installed on the sand table frame (200). The invention also includes a 3D display terminal (300), and a glass cover (400) is connected between the 3D display terminal (300) and the sand table frame (200). The 3D display terminal (300) uses projection fusion, LED screen or naked-eye 3D display technology to accurately match and present three-dimensional digital images, dynamic data and sand table physical models.

3. The interactive sand table device integrating naked-eye 3D display as described in claim 1, characterized in that, The sand table frame (200) is a rectangular structure, including a main frame (101), with side frames (103) fixed on both sides of the main frame (101). The two sides of the main frame (101) and the side frames (103) enclose a rectangular area. A rectangular plate (102) is slidably provided in the rectangular area on both sides of the main frame (101). The rectangular plate (102) can slide outward synchronously.

4. An interactive sand table device integrating naked-eye 3D display as described in claim 3, characterized in that, A mounting groove (104) is provided on one side of the side frame (103). A bidirectional threaded rod (105) is rotatably provided in the mounting groove (104). The rectangular plates (102) on both sides are slidably provided in the mounting groove (104), and the two rectangular plates (102) are respectively threaded with the two sides of the bidirectional threaded rod (105). The bidirectional threaded rod (105) is driven by the first motor.

5. An interactive sand table device integrating naked-eye 3D display as described in claim 1, characterized in that, The folding sand table model (500) includes a first model plate (501) and a second model plate (502), which are connected by a hinge (503). The folding sand table model (500) also includes movable bases on both sides, which have the same structure. The movable base includes an L-shaped support plate (504), which has a groove (511). A first sliding block (505) and a second sliding block (506) are slidably installed on the groove (511). Without external force, it will not move relative to the slide (511). The first sliding block (505) and the second sliding block (506) are respectively rotated and engaged with the first model plate (501) and the second model plate (502) through the rotating shaft (510). The bottom of the L-shaped support plate (504) is also provided with an electric roller (509). The side of the L-shaped support plate (504) is fixed with a mating block (507). The first sliding block (505) and the second sliding block (506) are provided with a plug (508) at the corresponding positions. The plug is fixed to the first sliding block (505) or the second sliding block (506). The other sliding block is provided with a hole.

6. An interactive sand table device integrating naked-eye 3D display as described in claim 1, characterized in that, The bottom of the main frame (101) is fixedly provided with a base plate (106). Two sets of first guide rails (107) are also fixedly provided on the top of the main frame (101) above the base plate (106). The electric rollers (509) on the folding sand table model (500) can move on the first guide rails (107). The top of the main frame (101) is fixedly and symmetrically provided with second guide rails (108). The folding sand table model (500) is installed between the two sets of second guide rails (108).

7. An interactive sand table device integrating naked-eye 3D display as described in claim 6, characterized in that, Both sides of the second guide rail (108) are provided with through grooves (109), and several first sliding blocks (505) and second sliding blocks (506) are provided with mating grooves. The second guide rail (108) is also independently provided with several limiting components. The limiting components include moving components (110), and pneumatic pins (111) are installed on the moving components (110).

8. An interactive sand table device integrating naked-eye 3D display as described in claim 1, characterized in that, The replacement component includes a movable crossbar (112), which is slidably mounted on the base plate (106). The sliding connection between the movable crossbar (112) and the base plate (106) includes, but is not limited to, transmission via a threaded rod.

9. An interactive sand table device integrating naked-eye 3D display as described in claim 8, characterized in that, Vertical plates (113) are fixedly provided on both sides of the movable crossbar (112), and first threaded rods (114) are rotatably provided on both sides of the vertical plates (113), and first limiting rods are fixedly provided. The first threaded rods (114) on both sides rotate synchronously.

10. An interactive sand table device integrating naked-eye 3D display as described in claim 9, characterized in that, The bottom of the first threaded rod (114) on both sides is coaxial and fixedly provided with a first pulley (115). The two first pulleys (115) are connected by a synchronous belt (116). One of the first pulleys (115) is driven by a motor. Both first threaded rods (114) are threaded with a tray (117).

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