A portable sand table

Abstract

The utility model provides a portable sand table, include: mesa, display support and support component, mesa has the storage cavity for placing display support, the one side of display support rotatable installation in storage cavity, when display support is located first position, display support is stored in storage cavity, when display support is located second position, display support is located above mesa and is provided with the included angle with mesa, support component is collapsible structure, set up in the below of mesa, is used for supporting mesa, the utility model discloses through the reasonable display support and support component of design, make whole sand table structure can realize the function of folding and unfolding, can fold fast when storage, portable, when using, can restore complete structure through simple stretching, easy and simple and fast operation, the utility model discloses portable sand table material durable, is not easy to damage, high stability, is not easy to incline, low cost, strong practicality.

Description

Technical Field

[0001] This utility model relates to the field of combat equipment technology, and in particular to a portable sand table. Background Technology

[0002] In various sectors such as the Armed Police, the military, fire services, emergency response, civil defense, and special police, sand tables serve as crucial tools for command operations, tactical training, and contingency planning based on three-dimensional geographic information and military mapping. Their portability and practicality are paramount. Traditional sand table bases are often bulky and heavy, making them inconvenient to carry and move, which significantly limits their application scenarios. Therefore, developing a lightweight yet robust portable sand table base has become an urgent need in the industry. Utility Model Content

[0003] In view of this, the present invention provides a portable sand table to eliminate or improve one or more defects existing in the prior art.

[0004] This utility model provides a portable sand table, including: a tabletop, a monitor stand, and a support assembly;

[0005] The tabletop has a storage cavity for placing the monitor stand;

[0006] One side of the monitor stand is rotatably installed in the storage cavity. When the monitor stand is in the first position, the monitor stand is stored in the storage cavity. When the monitor stand is in the second position, the monitor stand is set at an angle to the table surface and is located above the table surface.

[0007] The support component is a foldable structure and is located below the tabletop to support the tabletop.

[0008] In some embodiments of this utility model, the monitor bracket includes a frame and a reinforcing strip. The inner side of the frame is used to fix the monitor. One side of the frame is installed in the storage cavity via a pivot. The reinforcing strip is disposed on the side of the frame away from the front of the monitor. The two ends of the reinforcing strip are respectively fixedly connected to two non-adjacent sides of the frame.

[0009] In some embodiments of this utility model, the end of the reinforcing strip that connects to the storage cavity away from the frame has an inclined section, the inclined section being used to allow space for the junction of the storage cavity and the tabletop; and / or,

[0010] The reinforcing strip is fixedly connected to a mounting plate, which is used to mount the main unit. Heat dissipation holes are provided on the mounting plate and the reinforcing strip.

[0011] In some embodiments of this utility model, a hidden handle is provided on the side of the monitor bracket away from the side rotatably connected to the storage cavity.

[0012] In some embodiments of this utility model, the concealed handle is a semi-circular ring structure, the concealed handle has an arc side and a flat side, the monitor bracket is provided with a groove, the flat side of the concealed handle is rotatably installed in the groove, the flat side can be flush with the surface of the monitor bracket, and the arc side can protrude from the surface of the monitor bracket.

[0013] In some embodiments of this utility model, the monitor stand is connected to the tabletop via an elastic telescopic member. When the elastic telescopic member is in an extended state, it is used to lift the monitor stand. When the elastic telescopic member is in a shortened state, it is used to retract the monitor stand into the storage cavity.

[0014] In some embodiments of this utility model, a spring pin is provided on the bottom surface of the monitor bracket, and an insertion hole is provided in the storage cavity. The insertion hole is positioned opposite to the spring pin, and the spring pin is used to insert into the insertion hole to form a fixed connection between the monitor bracket and the table surface.

[0015] In some embodiments of this utility model, the support assembly includes two sets of support structures, which are respectively disposed on both sides of the tabletop. Each support structure includes two legs arranged side by side, one end of each leg being hinged to the tabletop. The two legs are connected by a crossbeam, and an elastic folding mechanism is provided between the crossbeam and the tabletop to allow the legs to fold toward one side of the tabletop.

[0016] In some embodiments of this utility model, the elastic folding mechanism includes two sets of folding frames arranged side by side, one end of each set of folding frames is hinged to the crossbeam, and the other end of each set of folding frames is hinged to the table surface;

[0017] The folding frame includes a first frame and a second frame. The first frame and the second frame are hinged to each other at their close ends. The first frame is hinged to the crossbeam at its far end from the second frame. The second frame is hinged to the table surface at its far end from the first frame. A spring is provided on the side of the first frame and the second frame that are close to each other after folding. One end of the spring is connected to the first frame, and the other end of the spring is connected to the second frame.

[0018] In some embodiments of this utility model, a limiting piece is provided on the side wall of the storage cavity, and when the display bracket is in the first position, the limiting piece abuts against the display bracket;

[0019] The limiting piece and the display bracket are provided with a cushioning pad on the side facing the table surface; and / or,

[0020] The outer edge of the tabletop is provided with a flexible folding handle, and the flexible folding handle is provided with a protective cover; and / or,

[0021] The storage cavity is equipped with a support beam to support the display; and / or,

[0022] The portable sand table also includes a screen tablecloth used to cover the support assembly in its unfolded state.

[0023] This portable sand table has the following advantages and technical effects: The portable sand table has two states: unfolded and folded. When unfolded, the support assembly raises the tabletop by a certain distance, providing stable support. The monitor stand is located in a second position, tilted relative to the tabletop, facilitating the operator's viewing of the sand table information. In this embodiment, an electronic sand table can be used, mounted on the monitor stand. When folded, the support assembly folds towards one side of the tabletop, fitting snugly against it. The monitor stand is located inside the storage cavity. Compared to the unfolded state, the folded state significantly reduces the size of the portable sand table, improving portability and allowing for sand table simulations anytime, anywhere.

[0024] Additional advantages, objects, and features of this invention will be set forth in part in the description which follows, and will in part become apparent to those skilled in the art upon review of the description, or may be learned by practice of the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures specifically pointed out in the description and drawings.

[0025] Those skilled in the art will understand that the objectives and advantages achievable with this invention are not limited to those specifically described above, and that the above and other objectives achievable with this invention will become clearer from the following detailed description. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, do not constitute a limitation thereof. The components in the drawings are not drawn to scale but are merely for illustrating the principles of the present invention. For ease of illustration and description of certain parts of the present invention, corresponding portions in the drawings may be enlarged, i.e., may appear larger relative to other components in an exemplary device actually manufactured according to the present invention. In the drawings:

[0027] Figure 1This is a schematic diagram of the portable sand table display stand and support components in an embodiment of the present invention, with both in an unfolded state.

[0028] Figure 2 This utility model Figure 1 A schematic diagram of the C-direction spring pin.

[0029] Figure 3 This is a front view of a portable sand table in one embodiment of the present invention.

[0030] Figure 4 This is a left view of a portable sand table in one embodiment of the present invention.

[0031] Figure 5 This is a top view of a portable sand table in one embodiment of the present invention.

[0032] Figure 6 This utility model Figure 5 Enlarged view of a portion of point A in the middle.

[0033] Figure 7 This is a schematic diagram of the portable sand table display stand and support components in a folded state according to one embodiment of the present invention.

[0034] Figure 8 This is a schematic diagram of the structure of a concealed handle in one embodiment of the present invention.

[0035] Figure 9 This is a schematic diagram of the countertop structure in one embodiment of the present invention.

[0036] Figure 10 This utility model Figure 9 Sectional view along line B.

[0037] Figure 11 This is a schematic diagram of the reinforcing strip and mounting plate in one embodiment of the present invention.

[0038] Reference numerals: 1. Tabletop; 11. Storage cavity; 12. Insertion hole; 13. Limiting piece; 14. Buffer pad; 15. Load-bearing beam; 2. Monitor bracket; 21. Frame; 22. Reinforcing strip; 23. Mounting plate; 24. Ventilation hole; 25. Groove; 26. Spring pin; 3. Concealed handle; 4. Elastic telescopic component; 5. Support assembly; 51. Leg; 52. Crossbeam; 53. First frame; 54. Second frame; 6. Elastic folding handle; 61. Protective cover; 7. Monitor. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. Here, the illustrative embodiments and descriptions of this utility model are used to explain the present utility model, but are not intended to limit the present utility model.

[0040] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0041] It should be emphasized that the term "including / comprises" as used herein refers to the presence of a feature, element, step, or component, but does not exclude the presence or addition of one or more other features, elements, steps, or components.

[0042] It should also be noted that, unless otherwise specified, the term "connection" in this article can refer not only to a direct connection, but also to an indirect connection involving an intermediary.

[0043] In the following description, embodiments of the present invention will be illustrated with reference to the accompanying drawings. In the drawings, the same reference numerals represent the same or similar parts, or the same or similar steps.

[0044] Currently, most sand table structures on the market are made of wood, plastic, or metal. These materials have varying degrees of defects in terms of portability, durability, and stability. While wooden bases are readily available, they are prone to warping due to moisture and have relatively low strength. Plastic bases, while offering good waterproof performance, are expensive and heavy, making them inconvenient to transport and move. Metal bases, although sturdy and durable, also suffer from being heavy and difficult to carry, and their numerous components make assembly complex. Furthermore, existing sand table structures are inadequate in terms of structural design and functional expansion, failing to meet diverse usage needs.

[0045] To address the technical problems of large size and weight in existing sand table technologies, making them inconvenient to carry, this utility model provides a portable sand table. By using lightweight, high-strength composite materials as the main body, combined with modular design and functional expansion interfaces, the sand table base achieves portability, lightness, and robustness. Simultaneously, by optimizing the structure and materials of the connecting parts and incorporating support columns and buffer springs, the stability and safety of the sand table base are ensured. The bottom support component of the portable sand table is foldable, fitting snugly against the table surface when folded. The display bracket on top of the portable sand table can be stored within the table surface, significantly reducing the volume of the sand table structure. The overall structure is easy to assemble and disassemble, quick to install, and significantly improves portability.

[0046] Reference Figure 1This utility model provides a portable sand table, including: a tabletop 1, a display stand 2, and a support component 5. The tabletop 1 has a storage cavity 11 for placing the display stand 2. One side of the display stand 2 is rotatably installed in the storage cavity 11. When the display stand 2 is in a first position, it is stored in the storage cavity 11. When the display stand 2 is in a second position, it is angled with the tabletop 1 and located above the tabletop 1. The support component 5 is a foldable structure and is located below the tabletop 1 to support the tabletop 1.

[0047] In this embodiment, the portable sand table has two states: unfolded and folded. When the portable sand table is unfolded, the support component 5 raises the tabletop 1 by a certain distance, providing stable support for the tabletop. The display bracket 2 is located in the second position, and the display bracket 2 is tilted relative to the tabletop 1, making it easier for the operator to view the sand table information. In this embodiment, the sand table can be an electronic sand table, which is mounted on the display bracket 2. When the portable sand table is folded, the support component 5 folds towards one side of the tabletop 1, fitting snugly against the tabletop 1. The display bracket 2 is located inside the storage cavity 11. Compared to the unfolded portable sand table, the folded portable sand table has a significantly reduced volume, improving portability.

[0048] It should be noted that the display bracket 2 in this embodiment is used to mount a monitor or all-in-one computer. The monitor can be a capacitive touchscreen, which supports multi-touch and has high sensitivity, requiring less than two ounces of force to detect touch and has a fast response time of less than 3ms. Furthermore, its lifespan is relatively longer than that of resistive touchscreens, resulting in lower maintenance costs for users. Alternatively, an LED touchscreen or other touchscreens can be used to meet the usage requirements.

[0049] In some embodiments, the monitor stand 2 includes a frame 21 and reinforcing strips 22. The inner side of the frame 21 is used to fix the monitor 7. One side of the frame 21 is mounted in the storage cavity 11 via a pivot. The reinforcing strips 22 are disposed on the side of the frame 21 away from the front of the monitor 7, and both ends of the reinforcing strips 22 are fixedly connected to two non-adjacent sides of the frame 21. The frame 21 may be a rectangular frame, with the same outer contour as the monitor. Multiple reinforcing strips 22 may be used. The reinforcing strips 22 can increase the connection performance between the monitor 7 and the frame 21 and prevent the monitor 7 from falling.

[0050] In some embodiments, the end of the reinforcing strip 22 that is away from the frame 21 and connected to the storage cavity 11 has an inclined section. The inclined section is used to make way for the junction of the storage cavity 11 and the tabletop 1, so as to prevent the monitor bracket 2 from hitting the tabletop 1 during folding.

[0051] Reference Figure 11This utility model presents a schematic diagram of the reinforcing strip and mounting plate in one embodiment. In some embodiments, the reinforcing strip 22 is fixedly connected to the mounting plate 23 by screws. The mounting plate 23 is used to mount the main unit, and heat dissipation holes 24 are provided on the mounting plate 23 and the reinforcing strip 22. The main unit can be a high-configuration, small-size micro-host, reducing the presence of the main unit and the noise generated by a large main unit during operation. The main unit and the monitor generate heat during operation, and the heat dissipation holes 24 are used for heat dissipation. The micro-host can be equipped with multiple functional interfaces, which can be connected to external devices to realize various functional expansions of the sand table base, enriching the forms and content of sand table games and teaching.

[0052] Reference Figure 5 A top view of a portable sand table in one embodiment of this utility model. In some embodiments, a hidden handle 3 is provided on the side of the display bracket 2 away from the side rotatably connected to the storage cavity 11. (Refer to...) Figure 8 A schematic diagram of the structure of the concealed handle in one embodiment of this utility model shows that the concealed handle 3 has a semi-circular ring structure, with an arc side and a flat side. A groove 25 is provided on the monitor bracket 2. The flat side of the concealed handle 3 is rotatably installed in the groove 25, and the flat side can be flush with the surface of the monitor bracket 2, while the arc side can protrude from the surface of the monitor bracket 2. (Refer to...) Figure 6 This utility model Figure 5 A magnified view of section A shows that when the monitor stand 2 needs to be rotated, the hidden handle 3 can rotate out in one direction for manual pulling of the monitor stand 2. The hidden handle 3 is connected to the monitor stand 2 using a thickened bearing, effectively ensuring 180° rotation and preventing the hidden handle 3 from wobbling or pinching the hand during use. When the monitor stand 2 does not need to be rotated, the hidden handle 3 can be hidden in the groove 25, minimizing its presence and not affecting user operation.

[0053] In some embodiments, the monitor stand 2 is connected to the tabletop 1 via an elastic telescopic member 4. When the elastic telescopic member 4 is in an extended state, it lifts the monitor stand 2; when it is in a shortened state, it retracts the monitor stand 2 into the storage cavity 11. The elastic telescopic member 4 can be a gas spring support rod. The monitor stand 2 is raised and lowered using the gas spring support rod. When the monitor stand 2 is raised or lowered, it is pulled by the hidden handle 3. The gas spring support rod can automatically rise and fall using internal air pressure. The lifting process is achieved by utilizing the pressure difference on both sides of the piston head of the gas spring support rod, and the lowering process is achieved by using external force to counteract the pressure difference.

[0054] Reference Figure 2 This utility model Figure 1A schematic diagram of the C-shaped spring pin is shown. In some embodiments, a spring pin 26 is provided on the bottom surface of the monitor bracket 2, and an insertion hole 12 is provided in the receiving cavity 11. The insertion hole 12 is positioned opposite to the spring pin 26, and the spring pin 26 is used to insert into the insertion hole 12 to form a fixed connection between the monitor bracket 2 and the table surface 1. (Refer to...) Figure 10 This utility model Figure 9 In the cross-sectional view along line B, the depth direction of the insertion hole 12 is perpendicular to the side wall of the storage cavity 11. When the monitor bracket 2 is stored in the storage cavity 11, the extension and retraction direction of the spring pin 26 is the same as the depth direction of the insertion hole 12. The operator manually controls the spring pin 26 to extend and insert into the insertion hole 12, thereby locking the tabletop 1 and the monitor bracket 2 and ensuring the stability of the sand table during transportation. When it is necessary to raise the monitor bracket 2, simply pull out the spring pin 26 manually, which is very convenient.

[0055] Reference Figure 3 A front view of a portable sand table in one embodiment of this utility model. In some embodiments, the support component 5 includes two sets of support structures, which are respectively arranged on both sides of the platform 1. Each support structure includes two legs 51 arranged side-by-side, one end of each leg 51 being hinged to the platform 1. The two legs 51 are connected by a crossbeam 52, and an elastic folding mechanism is provided between the crossbeam 52 and the platform 1 to allow the legs 51 to fold towards one side of the platform 1. The support structure provides stability and foldability for the sand table. (Refer to...) Figure 7 This utility model provides a schematic diagram of the structure of a portable sand table display stand and support components in a folded state. In the folded state, the tabletop 1 and the legs 51 are tightly stacked together to save space; in the unfolded state, the tabletop 1 can remain stable and secure.

[0056] In some embodiments, the elastic folding mechanism includes two sets of folding frames arranged side by side. One end of each set of folding frames is hinged to the crossbeam 52, and the other end of each set of folding frames is hinged to the table surface 1. Each folding frame includes a first frame 53 and a second frame 54. The ends of the first frame 53 and the second frame 54 that are close to each other are hinged together. The end of the first frame 53 away from the second frame 54 is hinged to the crossbeam 52, and the end of the second frame 54 away from the first frame 53 is hinged to the table surface 1. A spring is provided on the side of the first frame 53 and the second frame 54 that are close to each other after folding. One end of the spring is connected to the first frame 53, and the other end of the spring is connected to the second frame 54. In this embodiment, the spring between the first frame 53 and the second frame 54 ensures that the operator can fold the frame with minimal effort, keeping the support legs 51 in a folded state. The overall sand table structure has a wear resistance of no less than level 2 and an impact resistance of no less than level 3.

[0057] Reference Figure 9In one embodiment of this utility model, the tabletop is shown in a schematic diagram. In some embodiments, a limiting piece 13 is provided on the side wall of the storage cavity 11. When the monitor bracket 2 is in the first position, the limiting piece 13 abuts against the monitor bracket 2 and bears the weight of the monitor bracket 2.

[0058] In some embodiments, the limiting piece 13 and the display bracket 2 are provided with a buffer pad 14 on the side facing the table surface 1, which can minimize the vibration when the display is put down and protect the display from damage.

[0059] Reference Figure 4 A left view of a portable sand table in one embodiment of this utility model. In some embodiments, an elastic folding handle 6 is provided on the outer edge of the tabletop 1, and a protective cover 61 is provided on the elastic folding handle 6; two elastic folding handles 6 are installed on each side of the tabletop 1 for easy handling and movement. The elastic folding handle 6 is an exposed design, and the steel handle is equipped with a rubber protective cover, combined with ergonomics to reduce muscle pain during handling. The handle has an embedded automatic return function, opening and closing smoothly, and has a counter-pressure spring for automatic rebound to prevent impact noise from the suspended handle during transportation.

[0060] In some embodiments, a support beam 15 is provided inside the storage cavity 11 to support the display 7. Two support beams 15 may be provided to jointly support the weight of the display 7.

[0061] In some embodiments, the portable sand table also includes a screen tablecloth for covering the support component 5 in the unfolded state. In the unfolded state, the sand table support component 5 is secured with Velcro around the screen tablecloth. The screen tablecloth can be a camouflage Oxford screen, which is suitable for military combat environments. The screen is designed with zippers and Velcro for quick installation and fixation, making it look more aesthetically pleasing.

[0062] It is important to note that the portable sand table in this embodiment is made of materials that are lightweight, high-strength, corrosion-resistant, and wear-resistant, meeting the material performance requirements of a sand table. The support component 5 uses a steel frame with anti-static powder coating, and the load-bearing components are made of high-quality cold-rolled steel with a thickness of at least 2.5mm. The tabletop 1 is made of high-quality cold-rolled steel plate; other lightweight, high-strength materials such as aluminum alloy and titanium alloy can also be used as alternatives. These materials are laser-cut, bent, and welded, then electrostatically powder-coated. The outer surface treatment involves pickling and phosphating, rust removal, grinding, and then electrostatic powder coating. The display 7 uses a 65-inch capacitive touchscreen. This type of touchscreen supports multi-touch and has high sensitivity, responding to pressure of less than two ounces and with a fast response time of less than 3ms. It also has a longer lifespan than resistive touchscreens, resulting in lower maintenance costs for users. The concealed handles 3 are made of solid, thickened 304 stainless steel, ensuring stability, durability, and impact resistance. The enclosure tablecloth uses camouflage-patterned Oxford cloth, which is wear-resistant, wrinkle-resistant, and breathable. The camouflage pattern is suitable for use in military combat environments. The load-bearing beam 15, support leg 51 and crossbeam 52 adopt a hollow design to reduce unnecessary material use, further reduce the weight of the sand table base, and maintain sufficient strength.

[0063] The portable sand table according to the embodiments of this utility model has at least the following advantages and technical effects:

[0064] 1. Improved portability: By designing a foldable sand table base, the sand table is made more convenient and faster to transport and move, reducing transportation costs and expanding the scope and scenarios for the use of the sand table.

[0065] 2. Enhanced stability: The sand table base is designed with fixing and buffering devices at the bottom, which can firmly fix the sand table on the table or other flat surfaces, avoiding shaking caused by external factors and improving the stability and effectiveness of the sand table.

[0066] 3. High Installation Efficiency: The portable sand table requires no complicated tools or professional skills; assembly can be easily completed using only a simple operating guide, achieving an unprecedentedly fast installation experience. From unpacking to complete assembly, it only takes a mere 5 minutes, ready for use. This breakthrough, compared to sand table bases on the market that typically require 4 hours or even longer to install, undoubtedly sets a new efficiency benchmark for the industry.

[0067] It should be clarified that this utility model is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of this utility model is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of this utility model.

[0068] In this invention, features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, and / or combined with or in place of features of other embodiments.

[0069] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. For those skilled in the art, various modifications and variations can be made to the embodiments of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A portable sand table, characterized in that, include: Tabletop (1), monitor stand (2), support assembly (5) and monitor (7); The tabletop (1) has a storage cavity (11) for placing the monitor bracket (2). The display (7) is mounted on the display bracket (2); The monitor bracket (2) is rotatably installed in the storage cavity (11) on one side. When the monitor bracket (2) is in the first position, the monitor bracket (2) is stored in the storage cavity (11). When the monitor bracket (2) is in the second position, the monitor bracket (2) is set at an angle to the table surface (1) and is located above the table surface (1). The support component (5) is a foldable structure and is located below the tabletop (1) to support the tabletop (1).

2. The portable sand table according to claim 1, characterized in that, The monitor bracket (2) includes a frame (21) and a reinforcing strip (22). The inner side of the frame (21) is used to fix the monitor (7). One side of the frame (21) is installed in the storage cavity (11) through a pivot. The reinforcing strip (22) is located on the side of the frame (21) away from the front of the monitor (7). The two ends of the reinforcing strip (22) are fixedly connected to the two non-adjacent sides of the frame (21).

3. The portable sand table according to claim 2, characterized in that, The reinforcing strip (22) has an inclined section at the end that connects to the storage cavity (11) away from the frame (21), the inclined section being used to allow space at the junction of the storage cavity (11) and the tabletop (1); and / or, The reinforcing strip (22) is fixedly connected to a mounting plate (23), which is used to mount the host. Heat dissipation holes (24) are provided on the mounting plate (23) and the reinforcing strip (22).

4. The portable sand table according to claim 1, characterized in that, The monitor bracket (2) has a hidden handle (3) on the side away from the storage cavity (11) that is rotatably connected to it.

5. The portable sand table according to claim 4, characterized in that, The concealed handle (3) has a semi-circular ring structure. The concealed handle (3) has an arc side and a flat side. The monitor bracket (2) has a groove (25). The flat side of the concealed handle (3) is rotatably installed in the groove (25). The flat side is flush with the surface of the monitor bracket (2), and the arc side protrudes from the surface of the monitor bracket (2).

6. The portable sand table according to claim 1, characterized in that, The monitor bracket (2) is connected to the tabletop (1) via an elastic telescopic member (4). When the elastic telescopic member (4) is in an extended state, it is used to lift the monitor bracket (2). When the elastic telescopic member (4) is in a shortened state, it is used to drive the monitor bracket (2) to be stored in the storage cavity (11).

7. The portable sand table according to claim 1, characterized in that, The bottom surface of the monitor bracket (2) is provided with a spring pin (26), and the storage cavity (11) is provided with a socket (12). The socket (12) is opposite to the spring pin (26), and the spring pin (26) is used to insert into the socket (12) so that the monitor bracket (2) and the table surface (1) form a fixed connection.

8. The portable sand table according to claim 1, characterized in that, The support assembly (5) includes two sets of support structures, which are respectively arranged on both sides of the tabletop (1). Each support structure includes two legs (51) arranged side by side. One end of each leg (51) is hinged to the tabletop (1). The two legs (51) are connected by a crossbeam (52). An elastic folding mechanism is provided between the crossbeam (52) and the tabletop (1) so that the legs (51) can be folded to one side of the tabletop (1).

9. The portable sand table according to claim 8, characterized in that, The elastic folding mechanism includes two sets of folding frames arranged side by side. One end of each set of folding frames is hinged to the crossbeam (52), and the other end of each set of folding frames is hinged to the table surface (1). The folding frame includes a first frame (53) and a second frame (54). The first frame (53) and the second frame (54) are hinged to each other at their close ends. The first frame (53) is hinged to the crossbeam (52) at its far end from the second frame (54). The second frame (54) is hinged to the table surface (1) at its far end from the first frame (53). A spring is provided on the side of the first frame (53) and the second frame (54) that are close to each other after folding. One end of the spring is connected to the first frame (53), and the other end of the spring is connected to the second frame (54).

10. The portable sand table according to claim 1, characterized in that, A limiting piece (13) is provided on the side wall of the storage cavity (11). When the display bracket (2) is in the first position, the limiting piece (13) abuts against the display bracket (2). The limiting piece (13) and the display bracket (2) are provided with a cushioning pad (14) on the side facing the table surface (1); and / or, The outer edge of the tabletop (1) is provided with a flexible folding handle (6), and a protective cover (61) is provided on the flexible folding handle (6); and / or, The storage cavity (11) is provided with a supporting beam (15) for supporting the display (7); and / or, The portable sand table also includes a screen tablecloth for covering the support assembly (5) in its unfolded state.

Images