An adjustable teacher demonstration platform
By designing expansion and adjustment components, the problem of the inability to adjust the height and load-bearing area of the podium was solved, achieving the effect of flexibly adapting to different course needs and improving efficiency and labor-saving.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU ZHENDI SCI & EDUCATION INSTR EQUIP
- Filing Date
- 2025-07-18
- Publication Date
- 2026-06-26
Smart Images
Figure CN224403152U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of teacher demonstration podium technology, specifically an adjustable teacher demonstration podium. Background Technology
[0002] The lectern is generally only used to place lecture notes, chalk, books and other objects. With the development of science and technology, teaching equipment has become more and more advanced, and many high-tech teaching devices have emerged. As my country attaches more and more importance to education, the various facilities of schools have become a concern for many people. Whether the various teaching equipment is complete and suitable for the lecture content directly affects the level of teaching students receive. In order to enable students to receive a better education, it is necessary to improve the traditional lectern.
[0003] The existing lecterns are all fixed, which makes it inconvenient to quickly adjust the height according to the lecturer's height. At the same time, the horizontal load-bearing area of the lectern cannot be flexibly adjusted. The horizontal load-bearing space required by teachers of different courses is different. For example, physics teachers need to demonstrate physics experiments and need more load-bearing space to support the instruments. Therefore, it is necessary to provide a new type of adjustable teacher demonstration lectern to solve the above technical problems. Utility Model Content
[0004] The purpose of this invention is to provide an adjustable teacher demonstration platform, which has the advantages of expandability and increased flexibility, and quick adjustment of height, thus solving the problems in the background technology.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable teacher demonstration platform, comprising: a platform, a sleeve fixedly connected to the bottom of the platform, a fixed post sleeved inside the sleeve, and a base plate fixedly connected to the bottom of the fixed post; an expansion assembly, comprising two expansion plates, both of which are slidably connected to the inside of the platform, push plates fixedly connected to the distal ends of both expansion plates, threaded holes formed on the outside of both expansion plates, screws rotatably connected inside the threaded holes, and limit plates fixedly connected to the outside of the screws; and an adjustment assembly, comprising a fixing frame fixedly connected to the outside of the sleeve, a sliding rod slidably connected inside the fixing frame, an insert rod fixedly connected to the end of the sliding rod, a limit spring sleeved on the outside of the sliding rod, insert holes evenly formed on the outside of the fixed post, a push plate slidably connected inside the sleeve, and a return spring fixedly connected to the top of the push plate. During the process, when it is necessary to adjust the horizontal bearing area of the tabletop, the extension plate can be slid outward from the inside of the tabletop by moving the push plate. When the extension plate slides outward to the appropriate position, the screw can be rotated to make it go deeper into the threaded hole. At the same time, the limiting plate can move closer to the outside of the tabletop. Finally, as the screw continues to go deeper, the extension plate can be limited after it has expanded inside the tabletop. Thus, by adjusting the two extension plates, the horizontal bearing area of the tabletop can be adjusted to adapt to the needs of different courses and improve the flexibility of the overall device. When it is necessary to adjust the height of the tabletop, the slide rod can be moved to make the insertion rod disengage from the insertion hole. The spring force of the return spring can act in the opposite direction on the push plate, which can push the fixed column. Finally, the sleeve can be quickly adjusted in height outside the fixed column. After reaching the appropriate height, the spring force of the limiting spring can act in the opposite direction on the slide rod, which can make the insertion rod lock into the insertion hole. This limits the movement of the sleeve after sliding up and down outside the fixed column, which is more labor-saving and efficient than lifting it upward by hand.
[0006] Preferably, the outer surface of the table has two sliding grooves, and the two screws extend to the outer surface of the table through the two sliding grooves respectively. The sliding grooves allow the screws to pass through and be engaged inside the threaded holes. The width of the sliding grooves is smaller than the diameter of the limiting plate.
[0007] Preferably, a guardrail is fixedly connected to the top of the tabletop, and the return spring is fixedly connected to the inside of the top of the sleeve. The guardrail can conveniently block items placed on the tabletop.
[0008] Preferably, the tabletop has two cavities inside, and the two expansion plates are respectively fitted inside the two cavities, which can store the expansion plates.
[0009] Preferably, the bottom of the tabletop is fixedly connected to two fixed frames, and drawers are slidably connected inside the two fixed frames. The drawers facilitate the placement and storage of items during the teaching process.
[0010] Preferably, the fixing frame has a square hole inside that matches the slide rod, and the insertion rod can be completely locked inside the insertion hole. The insertion rod can pass through the sleeve and then be locked inside the insertion hole.
[0011] Preferably, the bottom pivot of the base plate is connected to four casters, all of which have a locking structure. The casters facilitate the flexible movement of the entire device and improve its convenience.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] I. In the use of this utility model, when it is necessary to adjust the horizontal bearing area of the tabletop, the extension plate can be slid outward from the inside of the tabletop by moving the push plate. When the extension plate slides outward to the appropriate position, the screw can be rotated to make it go deeper into the threaded hole. At the same time, the limiting plate can move closer to the outside of the tabletop. Finally, as the screw continues to go deeper, the limitation of the extension plate after it has been extended inside the tabletop can be achieved. Thus, by adjusting the two extension plates, the horizontal bearing area of the tabletop can be adjusted to adapt to the needs of different courses and improve the flexibility of the overall device.
[0014] II. In this utility model, when the height of the platform needs to be adjusted, the sliding rod is moved to disengage the insertion rod from the insertion hole. The spring force of the return spring acts in the opposite direction on the push plate, which pushes the fixed column. Ultimately, the sleeve can be quickly adjusted in height outside the fixed column. After reaching the appropriate height, the spring force of the limit spring acts in the opposite direction on the sliding rod, which can lock the insertion rod inside the insertion hole. This limits the movement of the sleeve after sliding up and down outside the fixed column, making it more labor-saving and efficient than lifting it manually. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the external structure of an adjustable teacher demonstration platform according to the present invention.
[0016] Figure 2 This is a schematic diagram of the unfolding structure of an adjustable teacher demonstration platform according to the present invention.
[0017] Figure 3 This is a schematic diagram of the internal structure of the sleeve of an adjustable teacher demonstration platform according to this utility model.
[0018] Figure 4 This is a schematic diagram of the internal structure of the adjustable teacher demonstration platform according to this utility model.
[0019] Figure 5 This utility model relates to an adjustable teacher demonstration podium. Figure 4 Enlarged structural diagram at point A in the middle.
[0020] In the diagram: 1. Countertop; 2. Sleeve; 3. Fixing post; 4. Base plate; 5. Side panel; 6. Extension plate; 7. Slide track; 8. Fixing frame; 9. Drawer; 10. Fixing bracket; 11. Casters; 12. Insertion hole; 13. Slide rod; 14. Limiting spring; 15. Insert rod; 16. Return spring; 17. Push plate; 18. Cavity; 19. Threaded hole; 20. Screw; 21. Limiting plate; 22. Push plate. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Please see Figures 1 to 4This utility model provides a technical solution: an adjustable teacher demonstration platform, comprising: a platform 1, a sleeve 2 fixedly connected to the bottom of the platform 1, a fixing post 3 sleeved inside the sleeve 2, and a base plate 4 fixedly connected to the bottom of the fixing post 3; an expansion assembly, comprising two expansion plates 6, both expansion plates 6 being slidably connected to the inside of the platform 1, push plates 22 fixedly connected to the far ends of both expansion plates 6, threaded holes 19 being opened on the outside of both expansion plates 6, and screws 20 being rotatably connected inside the threaded holes 19. The external fixed connection of 20 is limited by a limiting plate 21; the adjustment assembly includes a fixing frame 10, which is fixedly connected to the outside of the sleeve 2. A sliding rod 13 is slidably connected inside the fixing frame 10. An insert rod 15 is fixedly connected to the end of the sliding rod 13. A limiting spring 14 is sleeved on the outside of the sliding rod 13. Insertion holes 12 are evenly opened on the outside of the fixing column 3. A push plate 17 is slidably connected inside the sleeve 2. A return spring 16 is fixedly connected to the top of the push plate 17. During use, it is necessary to adjust the horizontal bearing area of the platform 1. When the push plate 22 is moved, the extension plate 6 can slide outward from the inside of the tabletop 1. After the extension plate 6 slides outward to the appropriate position, the screw 20 is rotated to make it penetrate deeper into the threaded hole 19. Simultaneously, the limiting plate 21 moves closer to the outside of the tabletop 1. Finally, as the screw 20 continues to penetrate deeper, the extension plate 6 is limited after expanding inside the tabletop 1. Thus, by adjusting the two extension plates 6, the horizontal bearing surface of the tabletop 1 can be adjusted to adapt to the needs of different courses, improving the flexibility of the overall device. To adjust the height of the platform 1, slide the slider 13 to disengage the insertion rod 15 from the insertion hole 12. The spring force of the return spring 16 acts in the opposite direction on the push plate 17, which pushes the fixed column 3. This allows the sleeve 2 to be quickly adjusted in height outside the fixed column 3. Once the appropriate height is reached, the spring force of the limit spring 14 acts in the opposite direction on the slider 13, causing the insertion rod 15 to be locked inside the insertion hole 12. This limits the movement of the sleeve 2 after sliding up and down outside the fixed column 3, making it more labor-saving and efficient than lifting it manually.
[0023] Two grooves 7 are provided on the outside of the tabletop 1. Two screws 20 extend to the outside of the tabletop 1 through the two grooves 7 respectively. The grooves 7 can hold the screws 20 through and lock them in the threaded hole 19. The width of the grooves 7 is smaller than the diameter of the limiting plate 21.
[0024] A guardrail 5 is fixedly connected to the top of the tabletop 1, and a return spring 16 is fixedly connected to the inside of the top of the sleeve 2. The guardrail 5 can conveniently block items placed on the tabletop 1.
[0025] The countertop 1 has two cavities 18 inside, and two expansion plates 6 are respectively fitted inside the two cavities 18. The cavities 18 can store the expansion plates 6.
[0026] The bottom of the tabletop 1 is fixedly connected to two fixed frames 8, and drawers 9 are slidably connected inside the two fixed frames 8. The drawers 9 can be used to place and store items during the teaching process.
[0027] When using this adjustable teacher demonstration platform, the extension plate 6 can be slid outward from the inside of the platform 1 by moving the push plate 22. After the extension plate 6 has slid outward to the appropriate position, the screw 20 can be rotated to make it go deeper into the threaded hole 19. At the same time, the limiting plate 21 can move closer to the outside of the platform 1. Finally, as the screw 20 continues to go deeper, the limitation of the extension plate 6 after it has been extended inside the platform 1 can be achieved.
[0028] Please see Figures 1 to 4 This utility model provides a technical solution: an adjustable teacher demonstration platform, in which the fixed frame 10 has a square hole inside that matches the sliding rod 13, and the insertion rod 15 can be completely locked inside the insertion hole 12. The insertion rod 15 can pass through the sleeve 2 and then be locked inside the insertion hole 12.
[0029] The bottom pivot of the base plate 4 is connected to four casters 11. All four casters 11 have a locking structure. The casters 11 can facilitate the flexible movement of the whole device and improve the convenience of the whole device.
[0030] When using this adjustable teacher demonstration platform, moving the slide bar 13 causes the insertion rod 15 to disengage from the insertion hole 12. The spring force of the return spring 16 acts in the opposite direction on the push plate 17, which pushes the fixed post 3. Ultimately, the sleeve 2 can be quickly adjusted in height outside the fixed post 3. The spring force of the limit spring 14 acts in the opposite direction on the slide bar 13, which allows the insertion rod 15 to be locked inside the insertion hole 12.
[0031] The standard parts used in this embodiment can be purchased directly from the market, while the non-standard structural parts described in the specification and drawings can be processed without any doubt based on existing technical common sense. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.
[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An adjustable teacher demonstration podium, characterized in that, include: A tabletop (1) is fixedly connected to a sleeve (2) at the bottom of the tabletop (1), and a fixed post (3) is fitted inside the sleeve (2), and a base plate (4) is fixedly connected to the bottom of the fixed post (3). An expansion assembly includes two expansion plates (6), both of which are slidably connected to the inside of the tabletop (1). A push plate (22) is fixedly connected to the far end of each of the two expansion plates (6). A threaded hole (19) is opened on the outside of each of the two expansion plates (6). A screw (20) is rotatably connected inside the threaded hole (19). A limit plate (21) is fixedly connected to the outside of the screw (20). The adjustment assembly includes a fixed frame (10), which is fixedly connected to the outside of the sleeve (2). A sliding rod (13) is slidably connected inside the fixed frame (10). An insert rod (15) is fixedly connected to the end of the sliding rod (13). A limiting spring (14) is sleeved on the outside of the sliding rod (13). Insert holes (12) are evenly opened on the outside of the fixed column (3). A push plate (17) is slidably connected inside the sleeve (2). A reset spring (16) is fixedly connected to the top of the push plate (17).
2. The adjustable teacher demonstration podium according to claim 1, characterized in that: Two grooves (7) are provided on the outside of the tabletop (1), and two screws (20) extend through the two grooves (7) to the outside of the tabletop (1).
3. The adjustable teacher demonstration podium according to claim 1, characterized in that: The top of the platform (1) is fixedly connected to a guardrail (5), and the reset spring (16) is fixedly connected to the inside of the top of the sleeve (2).
4. The adjustable teacher demonstration podium according to claim 1, characterized in that: The tabletop (1) has two cavities (18) inside, and the two expansion plates (6) are respectively fitted inside the two cavities (18).
5. The adjustable teacher demonstration podium according to claim 1, characterized in that: The bottom of the tabletop (1) is fixedly connected to two fixed frames (8), and drawers (9) are slidably connected inside the two fixed frames (8).
6. The adjustable teacher demonstration podium according to claim 1, characterized in that: The fixed frame (10) has a square hole inside that matches the slide rod (13), and the insertion rod (15) can be completely locked inside the insertion hole (12).
7. The adjustable teacher demonstration podium according to claim 1, characterized in that: The bottom pivot of the base plate (4) is connected to four casters (11), and all four casters (11) have a locking structure.