Multi-angle adjustable display device for popular science exhibits

Abstract

The invention relates to the technical field of exhibition display equipment, and discloses a science popularization exhibit multi-angle adjustable display device which comprises a hollow shell, four square hollow boxes are annularly and fixedly installed in the hollow shell at equal intervals, and through holes are formed between the bottoms of the four square hollow boxes and the bottom of the hollow shell; four square hollow boxes are installed in the hollow shell, square moving blocks A are installed in the four square hollow boxes, supporting legs are installed at the bottoms of the four square moving blocks A, four supporting rods are installed in the hollow shell, a forward and reverse rotation motor A is installed between two square hollow boxes in the hollow shell, and a main supporting plate is fixedly installed between the tops of the four supporting rods. A main display stand is mounted at the top of the main supporting plate, four auxiliary supporting plates are annularly mounted at the edge of the main supporting plate at equal intervals, and auxiliary display stands are mounted at the tops of the four auxiliary supporting plates; the popular science exhibit display device has a rotating multi-angle adjusting function and a telescopic rotating folding function.

Description

Technical Field

[0001] The invention belongs to the technical field of exhibition display equipment, and in particular relates to a multi-angle adjustable display device for popular science exhibits. Background Art

[0002] Popular science exhibits are exhibits used for popularizing science and education. They aim to convey scientific knowledge and principles to the public in an interactive and intuitive way. These exhibits usually cover multiple fields, such as physics, chemistry, biology, earth sciences, etc.; the design of popular science exhibits is often creative, which can attract the audience's attention and stimulate their desire to explore; through popular science exhibits, the audience can not only learn scientific knowledge, but also cultivate scientific thinking and innovation ability. These exhibits are widely used in museums, science and technology museums, schools and other places, and have become an important tool for scientific education.

[0003] Popular science exhibits will use exhibition display equipment when they are exhibited, while traditional exhibition display equipment has a fixed and simple structure, and its exhibition angle is fixed when in use, requiring visitors to circle around the exhibits to see them clearly, thus limiting the display range of the exhibits. At the same time, traditional exhibition display equipment has a fixed structure and cannot be adjusted, making it inconvenient to carry; therefore, improvements are needed to address the above problems. Summary of the invention

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-angle adjustable display device for popular science exhibits, comprising a hollow shell, wherein four square hollow boxes are fixedly installed in an annular manner at equal distances inside the hollow shell, through holes are provided between the bottoms of the four square hollow boxes and the bottom of the hollow shell, square movable blocks A that can be raised and lowered and adjusted are installed inside the four square hollow boxes, supporting legs are installed at the bottoms of the four square movable blocks A, the bottom portions of the four supporting legs pass through the four through holes and are installed with universal movable brake wheels, four support rods that can be raised and lowered and adjusted are installed inside the hollow shell, a forward and reverse motor A is installed between two of the square hollow boxes inside the hollow shell, the forward and reverse motor A drives and connects the four support rods and the four movable blocks A, a main support plate is fixedly installed between the tops of the four support rods, a rotatable and adjustable main display stand is installed on the top of the main support plate, four flip-adjustable auxiliary support plates are installed in an annular manner at equal distances at the edges of the main support plate, and rotatable and adjustable auxiliary display stands are installed on the tops of the four auxiliary support plates.

[0005] Preferably, threaded rods A are rotatably installed inside the four square hollow boxes, and movable blocks A are threadedly connected to the surfaces of threaded rods A. The tops of the four threaded rods A extend to the top of the square hollow boxes and are fixedly connected to sprockets A. Threaded rods B are rotatably installed at the four corners inside the hollow shell, and the tops of the four threaded rods B are fixedly connected to sprockets B. Chains A are installed between the four sprockets B and sprockets A. Square movable blocks B are threadedly connected to the surfaces of the four threaded rods B, and the bottoms of the four support rods are fixedly connected to the tops of the four square movable blocks B, respectively, so that the four support rods and the four movable blocks A can be adjusted synchronously.

[0006] Preferably, transmission gears are fixedly installed at the lower parts of the four threaded rods A, and through openings communicating with the interior of the hollow shell are opened at the lower parts of the four square hollow boxes. A large gear is fixedly connected to the output end of the forward and reverse motor A, and the large gear is meshed and connected with the four transmission gears through four through openings, thereby enabling effective transmission.

[0007] Preferably, a connecting block is fixedly installed at the bottom of the four moving blocks A, the upper parts of the four supporting legs are rotatably connected to the four connecting blocks respectively, an inclined block A and a vertical block are fixedly installed on one side of the connecting block, the supporting leg is located between the inclined block A and the vertical block, and a right-angled trapezoidal extrusion block is fixedly installed at one end of the bottom of the four moving blocks A.

[0008] Preferably, the hollow shell is located at the lower part of the four square hollow boxes and is provided with a buffer groove, and the inside of the buffer groove is movably plugged with an inverted T-shaped pin, and a return spring is fixedly connected between one end of the inverted T-shaped pin and the inside of the buffer groove, and the other end of the inverted T-shaped pin is equipped with a roller for squeezing the upper part of the supporting leg to rotate and tilt the supporting leg, and a right-angled trapezoidal pressure block matching and contacting the right-angled trapezoidal extrusion block is fixedly installed on the upper part of the inverted T-shaped pin close to the roller, thereby effectively adjusting the tilt of the supporting leg and allowing the device to be stably placed and used.

[0009] Preferably, the main support plate and the auxiliary support plate are both circular structures, and four fixed blocks are fixedly installed on the circumferential surface of the main support plate at equal intervals, and a pair of connecting plates are fixedly installed on the circumferential surface of the auxiliary support plate, each pair of connecting plates is rotatably connected to the fixed blocks through connecting pins, and a bevel gear A is fixedly installed on one end of one of the connecting pins on each fixed block.

[0010] Preferably, the upper parts of any two adjacent support rods are obliquely fixedly connected with a connecting long shaft, the upper ends of the connecting long shafts are fixedly installed with a bevel gear B meshing with the bevel gear A, and the lower ends of the connecting long shafts are fixedly installed with a bevel gear C.

[0011] Preferably, four fixed vertical plates are fixedly installed in an annular manner at equal distances at the bottom of the main support plate, and a large sprocket is rotatably connected to the upper parts of the four fixed vertical plates, and a bevel gear D meshing with a bevel gear C is fixedly installed at one axis of the large sprocket, and an adjusting gear is rotatably installed on the lower parts of the four fixed vertical plates, and a small sprocket is fixedly connected at the axis of the adjusting gear, and a chain B is installed between the small sprocket and the large sprocket, and vertical tooth plates are fixedly installed on the surfaces of the four square hollow boxes located inside the hollow shell, and the four adjusting gears are meshingly connected to the four vertical tooth plates, respectively, so that the four sub-supports can be effectively rotated and flipped and adjusted so that the sub-supports are rotated ninety degrees and fit with the surface of the hollow shell.

[0012] Preferably, a mounting groove A is provided on the top of the support plate, and the main display stand is rotatably mounted inside the mounting groove A. An angle adjustment motor is installed at the bottom of the mounting groove A, and the output end of the angle adjustment motor is connected to the middle of the bottom of the main display stand. An arc-shaped transmission rack is fixedly installed at the bottom of the main display stand, and four adjustment shafts are rotatably connected in an annular manner at equal intervals at the lower part of the mounting groove A. Bevel gears E are fixedly mounted on the opposite ends of the four adjustment shafts, and two adjacent bevel gears E are meshedly connected, and a bevel gear matching the arc-shaped transmission rack is fixedly mounted on one side of one of the adjustment shafts.

[0013] Preferably, the opposite ends of the four adjusting shafts extend to the outside of the main support plate and are located in the middle of the fixed block, the ends of the adjusting shafts located in the middle of the fixed block are installed with universal joint couplings, the tops of the auxiliary support plates are provided with mounting grooves B, the bottoms of the mounting grooves B are rotatably connected with bevel gears F, the auxiliary display stand is located inside the mounting grooves B, and the axis of the bottom of the auxiliary display stand is fixedly connected to the bevel gear F, the inside of the mounting grooves B is rotatably connected with a transmission shaft, one end of the transmission shaft is fixedly installed with a bevel gear G meshing with the bevel gear F, the other end of the transmission shaft extends between a pair of connecting plates and is connected to one end of the universal joint coupling, so that the rotation angle of the main display stand and the auxiliary display stand can be effectively adjusted.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) During operation, the display device for popular science exhibits has a rotating multi-angle adjustment function and a telescopic rotation and folding function by providing a hollow shell, a through hole, a square hollow box, a square moving block A, a supporting leg, a universal moving brake wheel, a supporting rod, a forward and reverse motor A, a main supporting plate, a main display stand, a secondary supporting plate and a secondary display stand. The rotating multi-angle adjustment function can rotate and turn the exhibits on display, so that all sides of the exhibits can be fully and effectively displayed to facilitate visitors to watch, and the telescopic rotation and folding function can effectively adjust the display device, so that the display device can be effectively contracted and folded, thereby facilitating the transportation of the display device and improving the convenience of use;

[0016] In addition, the display device has a simple structural design, is convenient to use and operate, and is stable and reliable to adjust. Its performance and functions can meet the needs of displaying popular science exhibits. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0018] In the attached picture:

[0019] Figure 1 This is a schematic diagram of the structure of the multi-angle adjustable display device for popular science exhibits of the present invention;

[0020] Figure 2 For the present invention Figure 1 A schematic diagram of a partial cross-sectional structure;

[0021] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0022] Figure 4 For the present invention Figure 1 A schematic diagram of a partial top view structure;

[0023] Figure 5 For the present invention Figure 1 Schematic diagram of the local structure;

[0024] Figure 6 For the present invention Figure 5 Schematic diagram of the local structure;

[0025] Figure 7 For the present invention Figure 5 A schematic diagram of the enlarged structure at B;

[0026] Figure 8 For the present invention Figure 5 A schematic diagram of the enlarged structure at C;

[0027] Fig. 9 For the present invention Figure 5 A schematic diagram of a partial cross-sectional structure;

[0028] Fig.10 For the present invention Fig. 9 The local structure of Figure 1 ;

[0029] Fig.11 For the present invention Fig. 9 The local structure of Figure 2 ;

[0030] In the figure: 1, hollow shell; 101, through hole; 2, square hollow box; 3, square moving block A; 4, supporting leg; 5, universal moving brake wheel; 6, supporting rod; 7, forward and reverse motor A; 8, main support plate; 9, main display stand; 10, auxiliary support plate; 11, auxiliary display stand; 12, threaded rod A; 13, sprocket A; 14, threaded rod B; 15, sprocket B; 16, square moving block B; 17, chain A; 18, transmission gear; 19, through port; 20, large gear; 21, connecting block; 22, inclined block A; 23, vertical block; 24, right-angle trapezoidal extrusion block; 25, buffer groove; 26, inverted T-shaped pin; 27, reset Spring; 28. Roller; 29. ​​Right-angle trapezoidal pressure block; 30. Fixed block; 31. Connecting plate; 32. Connecting pin; 33. Bevel gear A; 34. Connecting long shaft; 35. Bevel gear B; 36. Bevel gear C; 37. Fixed vertical plate; 38. Large sprocket; 39. Bevel gear D; 40. Adjusting gear; 41. Small sprocket; 42. Chain B; 43. Vertical tooth plate; 44. Mounting slot A; 45. Angle adjustment motor; 46. Arc transmission rack; 47. Adjusting shaft; 48. Bevel gear E; 49. Bevel gear; 50. Universal joint coupling; 51. Mounting slot B; 52. Bevel gear F; 53. Transmission shaft; 54. Bevel gear G. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] Embodiment 1, by Figures 1 to 11 The present invention comprises a hollow shell 1, four square hollow boxes 2 are fixedly installed in an annular shape at equal distances inside the hollow shell 1, through holes 101 are provided between the bottoms of the four square hollow boxes 2 and the bottom of the hollow shell 1, square movable blocks A3 which can be raised and lowered are installed inside the four square hollow boxes 2, supporting legs 4 are installed at the bottoms of the four square movable blocks A3, the bottoms of the four supporting legs 4 pass through the four through holes 101 and are installed with universal movable brake wheels 5, four supporting rods 6 which can be raised and lowered are installed inside the hollow shell 1, a forward and reverse motor A7 is installed between two of the square hollow boxes 2 inside the hollow shell 1, and the forward and reverse motor A7 drives and connects the four supporting rods 6 and the four movable blocks A3.

[0033] A main support plate 8 is fixedly installed between the tops of the four support rods 6, a rotatable main display platform 9 is installed on the top of the main support plate 8, four flip-adjustable auxiliary support plates 10 are installed in a circular shape at equal distances on the edge of the main support plate 8, and a rotatable auxiliary display platform 11 is installed on the top of each of the four auxiliary support plates 10.

[0034] The display device for popular science exhibits has a rotating multi-angle adjustment function and a telescopic, turning and folding function. The rotating multi-angle adjustment function can rotate and turn the exhibits on display, so that all sides of the exhibits can be fully and effectively displayed to facilitate visitors to watch, and the telescopic, turning and folding function can effectively adjust the display device, so that the display device can be effectively contracted and folded, thereby facilitating the transportation of the display device and improving the convenience of use; and the display device has a simple structural design, is convenient and easy to use and operate, and is stable and reliable to adjust. Its performance and functions can meet the use requirements of popular science exhibits.

[0035] Embodiment 2, on the basis of embodiment 1, threaded rods A12 are rotatably installed inside the four square hollow boxes 2, and moving blocks A3 are threadedly connected to the surfaces of the threaded rods A12, and the tops of the four threaded rods A12 extend to the tops of the square hollow boxes 2 and are fixedly connected to sprockets A13, threaded rods B14 are rotatably installed at the four corners inside the hollow shell 1, and sprockets B15 are fixedly connected to the tops of the four threaded rods B14, and chains A17 are installed between the four sprockets B15 and the sprockets A13, and square moving blocks B16 are threadedly connected to the surfaces of the four threaded rods B14, and the bottoms of the four support rods 6 are fixedly connected to the tops of the four square moving blocks B16, respectively, so that the four support rods 6 and the four moving blocks A3 can be adjusted synchronously.

[0036] A transmission gear 18 is fixedly installed at the lower part of the four threaded rods A12, and a through hole 19 connected to the interior of the hollow shell 1 is opened at the lower part of the four square hollow boxes 2. A large gear 20 is fixedly connected to the output end of the forward and reverse motor A7, and the large gear 20 is meshed and connected with the four transmission gears 18 through four through holes 19, so that transmission can be effectively performed.

[0037] As shown in the accompanying drawings, when the device needs to be retracted and adjusted, the forward and reverse motor A7 is first started to rotate the large gear 20. The rotation of the large gear 20 will transmit the four transmission gears 18 to rotate the four threaded rods A12. The rotation of the four threaded rods A12 will cause the four moving blocks A3 to move upward. The upward movement of the four moving blocks A3 will drive the four supporting legs 4 to be stored inside the square hollow box 2. The upward movement of the four supporting legs 4 will drive the four universal moving brake wheels 5 to move upward, thereby reducing the height of the hollow shell 1.

[0038] At the same time, the rotation of the four threaded rods A12 will drive the four sprockets A13 to rotate, and the rotation of the four sprockets A13 will drive the four sprockets B15 to rotate through the chains A17, and the rotation of the four sprockets B15 will drive the four threaded rods B14 to rotate, and the rotation of the four threaded rods B14 will cause the four square moving blocks B16 to move downward, and the downward movement of the four square moving blocks B16 will drive the four support rods 6 to move downward and be stored in the interior of the hollow shell 1, thereby moving the main support plate 8, the main display table 9, the auxiliary support plate 10 and the auxiliary display table 11 downward to shrink the entire device, so that the entire device can be conveniently carried.

[0039] Embodiment 3, on the basis of embodiment 2, the bottom of the four moving blocks A3 are fixedly installed with connecting blocks 21, the upper parts of the four supporting legs 4 are rotatably connected to the four connecting blocks 21 respectively, an inclined block A22 and a vertical block 23 are fixedly installed on one side of the connecting block 21, the supporting leg 4 is located between the inclined block A22 and the vertical block 23, and one end of the bottom of the four moving blocks A3 is fixedly installed with a right-angled trapezoidal extrusion block 24.

[0040] The hollow shell 1 is located at the lower part of the four square hollow boxes 2, and a buffer groove 25 is opened. The inside of the buffer groove 25 is movably plugged with an inverted T-shaped pin 26. A return spring 27 is fixedly connected between one end of the inverted T-shaped pin 26 and the inside of the buffer groove 25. The other end of the inverted T-shaped pin 26 is installed with a roller 28 for squeezing the upper part of the supporting leg 4 to rotate and tilt the supporting leg 4. A right-angled trapezoidal pressure block 29 that matches and contacts the right-angled trapezoidal extrusion block 24 is fixedly installed on the upper part of the inverted T-shaped pin 26 close to the roller 28. Thereby, the inclination of the supporting leg 4 can be effectively adjusted so that the device can be stably placed and used.

[0041] As shown in the accompanying drawings, the right-angled trapezoidal extrusion block 24 squeezes the right-angled trapezoidal pressure block 29 to make the inverted T-shaped pin 26 move horizontally and stretch the return spring 27, and the horizontal movement of the inverted T-shaped pin 26 drives the roller 28 to squeeze and rotate the upper part of the support leg 4, and at the same time, the support leg 4 is stably tilted by the limit of the tilting block A22, and the four tilted support legs 4 can effectively ensure the stability of the device when used;

[0042] When the moving block A3 moves upward, it will drive the connecting block 21 and the right-angled trapezoidal extrusion block 24 to move upward. The upward movement of the right-angled trapezoidal extrusion block 24 will no longer squeeze the right-angled trapezoidal pressure block 29, and the elastic restoring force of the reset spring 27 will cause the inverted T-shaped pin 26 to drive the roller 28 to move away from the supporting leg 4. Then, the upward moving connecting block 21 will drive the supporting leg 4 and the universal movable brake wheel 5 to move upward, so that the supporting leg 4 is stored in the interior of the square hollow box 2 and the height of the device is reduced.

[0043] Embodiment 4, on the basis of embodiment 1, the main support plate 8 and the auxiliary support plate 10 are both circular structures, and four fixed blocks 30 are fixedly installed on the circumferential surface of the main support plate 8 at equal intervals, and a pair of connecting plates 31 are fixedly installed on the circumferential surface of the auxiliary support plate 10, each pair of connecting plates 31 is rotatably connected to the fixed block 30 through a connecting pin 32, and a bevel gear A33 is fixedly installed on one end of one of the connecting pins 32 on each fixed block 30, and a connecting long shaft 34 is obliquely fixedly connected to the upper parts of any two adjacent support rods 6, and a bevel gear B35 meshing with the bevel gear A33 is fixedly installed on the upper end of the connecting long shaft 34, and a bevel gear C36 is fixedly installed on the lower end of the connecting long shaft 34.

[0044] Four fixed vertical plates 37 are fixedly installed in an annular manner at equal distances at the bottom of the main support plate 8, and the upper parts of the four fixed vertical plates 37 are rotatably connected to large sprockets 38, and a bevel gear D39 meshing with a bevel gear C36 is fixedly installed at one axis of the large sprocket 38, and an adjusting gear 40 is rotatably installed at the lower parts of the four fixed vertical plates 37, and a small sprocket 41 is fixedly connected at the axis of the adjusting gear 40, and a chain B42 is installed between the small sprocket 41 and the large sprocket 38, and the surfaces of the four square hollow boxes 2 located inside the hollow shell 1 are fixedly installed with vertical tooth plates 43, and the four adjusting gears 40 are meshingly connected with the four vertical tooth plates 43, respectively, so that the four sub-support plates 10 can be effectively rotated and flipped to adjust the sub-support plates 10 so that the sub-support plates 10 rotate ninety degrees and fit with the surface of the hollow shell 1.

[0045] When the four support rods 6 drive the main support plate 8, the main display platform 9, the auxiliary support plate 10 and the auxiliary display platform 11 to move downward, the four fixed vertical plates 37 will move downward synchronously, and the downward movement of the four fixed vertical plates 37 will drive the four adjusting gears 40 to roll and rotate downward on the surfaces of the four vertical tooth plates 43, and the rotation of the adjusting gear 40 will drive the large sprocket 38 to rotate through the small sprocket 41 and the chain B42, and the rotation of the large sprocket 38 will drive the bevel gear D39 to rotate, and the rotation of the bevel gear D39 will transmit the bevel gear C36 to make the chain The connecting shaft 34 rotates, and the rotation of the connecting shaft 34 drives the bevel gear B35 to rotate and transmits the bevel gear A33 to rotate. The rotation of the bevel gear A33 drives the connecting plate 31, the auxiliary support plate 10 and the auxiliary display stand 11 to flip 90 degrees and fit with the surface of the hollow shell 1, and finally makes the four auxiliary support plates 10 and the four auxiliary display stands 11 move downward to fit with the surface of the hollow shell 1, so as to shrink and adjust the device for easy transportation; at the same time, the connecting plate 31 can be effectively rotated and adjusted through the universal joint coupling 50.

[0046] A mounting groove A44 is provided on the top of the main support plate 8, and the main display platform 9 is rotatably mounted inside the mounting groove A44. An angle adjustment motor 45 is installed at the bottom of the mounting groove A44, and the output end of the angle adjustment motor 45 is connected to the middle of the bottom of the main display platform 9. An arc-shaped transmission rack 46 is fixedly installed at the bottom of the main display platform 9, and four adjustment shafts 47 are rotatably connected in an annular manner at equal distances at the lower part of the mounting groove A44. Bevel gears E48 are fixedly installed at the opposite ends of the four adjustment shafts 47, and two adjacent bevel gears E48 are meshedly connected. A bevel gear 49 matching the arc-shaped transmission rack 46 is fixedly installed on one side of one of the adjustment shafts 47.

[0047] The opposite ends of the four adjustment shafts 47 extend to the outside of the main support plate 8 and are located in the middle of the fixed block 30. The ends of the adjustment shafts 47 located in the middle of the fixed block 30 are installed with universal joint couplings 50. The top of the auxiliary support plate 10 is provided with a mounting groove B51, and the bottom of the mounting groove B51 is rotatably connected with a bevel gear F52. The auxiliary display stand 11 is located inside the mounting groove B51, and the axis of the bottom of the auxiliary display stand 11 is fixedly connected to the bevel gear F52. The inside of the mounting groove B51 is rotatably connected with a transmission shaft 53, and one end of the transmission shaft 53 is fixedly installed with a bevel gear G54 meshing with the bevel gear F52. The other end of the transmission shaft 53 extends between a pair of connecting plates 31 and is connected to one end of the universal joint coupling 50, so that the rotation angle of the main display stand 9 and the auxiliary display stand 11 can be effectively adjusted.

[0048] When in use, the popular science exhibits are placed on the top of the four auxiliary display tables 11, and the introduction information of the popular science exhibits is placed on the main display table 9, and then the angle adjustment motor 45 is started to slowly rotate the main display table 9. The slow rotation of the main display table 9 will drive the arc-shaped transmission rack 46 to rotate, and the main display table 9 rotates one circle, which will mobilize the arc-shaped transmission rack 46 to rotate one circle. Each rotation of the arc-shaped transmission rack 46 will drive the bevel gear 49 to rotate 90 degrees, and the nine rotations of the bevel gear 49 will rotate 90 degrees. A ten-degree rotation through four meshing bevel gears E48 will cause the four adjustment shafts 47 to rotate ninety degrees. The ninety-degree rotation of the four adjustment shafts 47 will drive the transmission shaft 53 and the bevel gear G54 to rotate ninety degrees through the universal joint coupling 50. The ninety-degree rotation of the bevel gear G54 will drive the four auxiliary display platforms 11 to rotate ninety degrees through the bevel gear F52, so that the four auxiliary display platforms 11 can drive the science exhibits on the top to perform regular angle adjustment to facilitate tourists to fully view the science exhibits.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-angle adjustable display device for popular science exhibits, comprising a hollow shell (1), characterized in that: Four square hollow boxes (2) are fixedly installed in an annular shape at equal intervals inside the hollow shell (1); through holes (101) are provided between the bottoms of the four square hollow boxes (2) and the bottom of the hollow shell (1); square movable blocks A (3) that can be raised and lowered are installed inside the four square hollow boxes (2); support legs (4) are installed at the bottoms of the four square movable blocks A (3); the bottoms of the four support legs (4) pass through the four through holes (101) and are installed with universal movable brake wheels (5); four support rods (6) that can be raised and lowered are installed inside the hollow shell (1); a forward and reverse motor A (7) is installed between two of the square hollow boxes (2) inside the hollow shell (1); the forward and reverse motor A (7) is connected to the four support rods (6) and the four movable blocks A (3) in a transmission manner; A main support plate (8) is fixedly installed between the tops of the four support rods (6), a main display stand (9) that can be rotated and adjusted is installed on the top of the main support plate (8), four flip-adjustable auxiliary support plates (10) are installed at equal distances in a circle at the edge of the main support plate (8), and auxiliary display stands (11) that can be rotated and adjusted are installed on the tops of the four auxiliary support plates (10).

2. The multi-angle adjustable display device for popular science exhibits according to claim 1, characterized in that: The four square hollow boxes (2) are rotatably mounted with threaded rods A (12), the moving blocks A (3) are threadedly connected to the surfaces of the threaded rods A (12), the tops of the four threaded rods A (12) extend to the tops of the square hollow boxes (2) and are fixedly connected to sprockets A (13), the four corners of the hollow shell (1) are rotatably mounted with threaded rods B (14), the tops of the four threaded rods B (14) are fixedly connected to sprockets B (15), chains A (17) are installed between the four sprockets B (15) and the sprockets A (13), the surfaces of the four threaded rods B (14) are threadedly connected to square moving blocks B (16), and the bottoms of the four support rods (6) are fixedly connected to the tops of the four square moving blocks B (16) respectively.

3. The multi-angle adjustable display device for popular science exhibits according to claim 2, characterized in that: A transmission gear (18) is fixedly mounted at the bottom of each of the four threaded rods A (12); a through hole (19) communicating with the inside of the hollow shell (1) is opened at the bottom of each of the four square hollow boxes (2); a large gear (20) is fixedly connected to the output end of the forward and reverse motor A (7); and the large gear (20) is meshedly connected with the four transmission gears (18) through the four through holes (19).

4. The multi-angle adjustable display device for popular science exhibits according to claim 2, characterized in that: The bottoms of the four moving blocks A (3) are all fixedly mounted with connecting blocks (21); the upper parts of the four supporting legs (4) are rotatably connected to the four connecting blocks (21) respectively; an inclined stopper A (22) and a vertical stopper (23) are fixedly mounted on one side of the connecting block (21); the supporting leg (4) is located between the inclined stopper A (22) and the vertical stopper (23); and one end of the bottom of the four moving blocks A (3) is fixedly mounted with a right-angled trapezoidal extrusion block (24).

5. The multi-angle adjustable display device for popular science exhibits according to claim 4, characterized in that: The hollow shell (1) is provided with a buffer groove (25) at the lower part of the four square hollow boxes (2), and an inverted T-shaped latch (26) is movably inserted inside the buffer groove (25). A return spring (27) is fixedly connected between one end of the inverted T-shaped latch (26) and the inside of the buffer groove (25), and a roller (28) is installed at the other end of the inverted T-shaped latch (26) for pressing the upper part of the support leg (4) to rotate and tilt the support leg (4), and a right-angled trapezoidal pressure block (29) matching and contacting the right-angled trapezoidal extrusion block (24) is fixedly installed on the upper part of the inverted T-shaped latch (26) close to the roller (28).

6. The multi-angle adjustable display device for popular science exhibits according to claim 1, characterized in that: The main support plate (8) and the auxiliary support plate (10) are both circular structures, and four fixing blocks (30) are fixedly installed at equal intervals on the circumferential surface of the main support plate (8), and a pair of connecting plates (31) are fixedly installed on the circumferential surface of the auxiliary support plate (10), each pair of connecting plates (31) is rotatably connected to the fixing block (30) via a connecting pin (32), and a bevel gear A (33) is fixedly installed on one end of one of the connecting pins (32) on each fixing block (30).

7. The multi-angle adjustable display device for popular science exhibits according to claim 6, characterized in that: The upper parts of any two adjacent support rods (6) are obliquely fixedly connected with a connecting long shaft (34), the upper end of the connecting long shaft (34) is fixedly installed with a bevel gear B (35) meshing with the bevel gear A (33), and the lower end of the connecting long shaft (34) is fixedly installed with a bevel gear C (36).

8. The multi-angle adjustable display device for popular science exhibits according to claim 6, characterized in that: Four fixed vertical plates (37) are fixedly installed at the bottom of the main support plate (8) in an annular shape at equal intervals. The upper parts of the four fixed vertical plates (37) are all rotatably connected with a large sprocket (38). A bevel gear D (39) meshingly connected with a bevel gear C (36) is fixedly installed at one axis of the large sprocket (38). An adjusting gear (40) is rotatably installed at the lower parts of the four fixed vertical plates (37). A small sprocket (41) is fixedly connected at the axis of the adjusting gear (40). A chain B (42) is installed between the small sprocket (41) and the large sprocket (38). Vertical tooth plates (43) are fixedly installed on the surfaces of the four square hollow boxes (2) located inside the hollow shell (1). The four adjusting gears (40) are respectively meshingly connected with the four vertical tooth plates (43).

9. The multi-angle adjustable display device for popular science exhibits according to claim 8, characterized in that: The top of the main support plate (8) is provided with a mounting groove A (44), the main display platform (9) is rotatably mounted inside the mounting groove A (44), an angle adjustment motor (45) is mounted at the bottom of the mounting groove A (44), the output end of the angle adjustment motor (45) is connected to the middle of the bottom of the main display platform (9), an arc-shaped transmission rack (46) is fixedly mounted at the bottom of the main display platform (9), four adjustment shafts (47) are rotatably connected in an annular manner at equal distances at the lower part of the mounting groove A (44), bevel gears E (48) are fixedly mounted at opposite ends of the four adjustment shafts (47), and two adjacent bevel gears E (48) are meshedly connected, and a bevel gear (49) matching the arc-shaped transmission rack (46) is fixedly mounted on one side of one of the adjustment shafts (47).

10. The multi-angle adjustable display device for popular science exhibits according to claim 9, characterized in that: The opposite ends of the four adjusting shafts (47) extend to the outside of the main support plate (8) and are located in the middle of the fixed block (30); the ends of the adjusting shafts (47) located in the middle of the fixed block (30) are installed with universal joint couplings (50); the top of the auxiliary support plate (10) is provided with a mounting groove B (51); the bottom of the mounting groove B (51) is rotatably connected with a bevel gear F (52); the auxiliary display stand (11) is located inside the mounting groove B (51); the axis of the bottom of the auxiliary display stand (11) is fixedly connected with the bevel gear F (52); the inside of the mounting groove B (51) is rotatably connected with a transmission shaft (53); one end of the transmission shaft (53) is fixedly installed with a bevel gear G (54) meshing with the bevel gear F (52); the other end of the transmission shaft (53) extends between a pair of connecting plates (31) and is connected to one end of the universal joint coupling (50).

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