Desk with height convenient to adjust for teaching

Abstract

The utility model provides a teaching desk convenient for height adjustment, which comprises a desk plate and a lifting mechanism, the lifting mechanism comprises lifting plates, fixing sleeves, a connecting plate, a control frame, a fixing frame and a lifting frame, the left part and the right part of the bottom surface of the desk plate are fixedly connected with the lifting plates respectively, the lifting plates are connected in the fixing sleeves in a sliding manner, and the front end surface of the connecting plate is fixedly connected with a track; two sliding sleeves are arranged on the track, a rectangular plate is fixedly connected to the two sliding sleeves, arc-shaped blocks are fixedly connected to the outer side of the rectangular plate, inclined blocks are slidably connected to the inner side faces of the fixing sleeves, the two ends of the lifting frame are fixedly connected to the bottom faces of the inclined blocks respectively, the inclined faces of the inclined blocks are matched with the front ends of the arc-shaped blocks, and the control frame is installed on the inner side face of the lifting plate. A plurality of inserting holes are formed in the control frame in the vertical direction, a movable rod with an inserting rod is connected to the fixed frame in a sliding mode, the inserting rod is matched with the inserting holes of the control frame, and the height of the desk can be simply and rapidly adjusted.

Description

Technical Field

[0001] This utility model belongs to the field of teaching aids, specifically relating to a height-adjustable desk for teaching. Background Technology

[0002] With social progress and economic development, people's lives are getting better and better, and children's nutrition is more balanced. Compared with decades ago, children's height, weight and other developmental conditions have changed significantly. Furthermore, due to the differences in the physiological development time of boys and girls, there may be huge gaps between children of the same school age. For example, in the same elementary school class, you can often see girls who are about 170cm tall and boys who are about 150cm tall. Because of the increasing differences in individual development, traditional fixed-structure desks and chairs can no longer meet the needs of students. One-size-fits-all desks may directly affect children's normal development.

[0003] There are many height-adjustable desks on the market now, but the height adjustment methods are often complicated to operate and require tools, which brings inconvenience to students and teachers. For example, existing desks usually use bolt fastening or knob adjustment to adjust the height. These methods require the use of specific tools and the operation process is cumbersome, requiring a lot of time and effort. For students, they may need to adjust the height of the desk according to their own height needs in class, but due to the complicated operation and lack of tools, they often find it difficult to complete the adjustment by themselves, which will affect their learning efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a height-adjustable desk for teaching purposes, which allows for simple and quick height adjustment.

[0005] To achieve the above objectives, the technical solution provided by this utility model is a height-adjustable desk for teaching, comprising a tabletop and a lifting mechanism. The lifting mechanism includes a lifting plate, a fixing sleeve, a connecting plate, a control frame, a fixing frame, and a lifting frame.

[0006] The bottom surface of the table is fixedly connected to lifting plates on the left and right sides, respectively. The lifting plates are slidably connected within a fixed sleeve. Both ends of a connecting plate are fixedly connected to the lower half of the fixed sleeve, connecting the two fixed sleeves into one unit. A track is fixedly connected to the front end of the connecting plate, and two sliding sleeves are mounted on the track. Rectangular plates are fixedly connected to the two sliding sleeves, and arc-shaped blocks are fixedly connected to the outer sides of the rectangular plates. An inclined block is slidably connected to the inner side of the fixed sleeve. Both ends of the lifting frame are fixedly connected to the bottom surface of an inclined block, and the inclined surface of the inclined block mates with the front end of the arc-shaped block.

[0007] The control frame is installed on the inner side of the lifting plate, and several insertion holes are provided on the control frame along the vertical direction.

[0008] The fixed frame is fixedly connected to the inner side of the fixed sleeve. A movable rod is slidably connected to the fixed frame. A plug rod is fixedly connected to the inner end of the movable rod. The plug rod cooperates with the plug hole of the control frame. One end of the movable rod is fixedly connected to the rectangular plate. A return spring is provided between the movable rod and the fixed frame.

[0009] It also includes a support mechanism, including a base plate, a support frame, and support blocks. The base plate is fixedly connected to the bottom of the fixed sleeve and to the support frame. Two support blocks are slidably disposed on the support frame. The bottom ends of the support blocks are in contact with the ground. An adjustment plate is fixedly connected to the side wall and extends out of the support frame. A fixed plate is fixedly connected to the base plate corresponding to the adjustment plate. A threaded rod is provided on the fixed plate, and the lower end of the threaded rod contacts the top of the adjustment plate.

[0010] Preferably, the adjusting plate is provided with a slot for accommodating the front end of the threaded rod.

[0011] Preferably, a kick plate is provided in the middle of the lifting frame.

[0012] Preferably, a groove is provided between the two sockets of the control frame for the insertion rod to slide on.

[0013] Preferably, the fixing sleeve is provided with a longitudinal wedge-shaped groove, and a wedge-shaped block is slidably disposed in the wedge-shaped groove, with the upper end of the wedge-shaped block being fixedly connected to the inclined block.

[0014] Preferably, a spring is provided at the lower end of the lifting plate and the bottom surface of the fixed sleeve. When the spring is not under force, the lifting plate is in the maximum extended position.

[0015] The teaching desk of this utility model has a simple and convenient height adjustment method, a stable and reliable structure, and multiple adjustment modes, including equal height adjustment and fine-tuning. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the left side of this utility model;

[0017] Figure 2 This is a top view of the three-dimensional cross-section of the present invention;

[0018] Figure 3 This is a three-dimensional cross-sectional view of the present invention from below;

[0019] Figure 4 This is a three-dimensional schematic diagram of the right-side support mechanism of this utility model.

[0020] Figure 5 This is a three-dimensional schematic diagram of the left-side support mechanism of this utility model;

[0021] Figure 6 This utility model Figure 2 Enlarged 3D schematic diagram of area A in the middle.

[0022] In the diagram: 1. Tabletop; 2. Lifting mechanism; 21. Lifting plate; 22. Fixing sleeve; 23. Lifting frame; 24. Kick plate; 25. Connecting plate; 26. Track; 27. Inclined block; 28. Arc block; 29. ​​Sliding sleeve; 210. Wedge block; 211. Moving rod; 212. Control frame; 213. Insert rod; 214. Fixing frame; 215. Return spring; 216. Wing plate; 217. Rectangular plate; 3. Support mechanism; 31. Base plate; 32. Support frame; 33. Threaded rod; 34. Nut; 35. Fixing plate; 36. Adjusting plate; 37. Support block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1

[0025] like Figures 1-6 As shown, a height-adjustable desk for teaching includes a tabletop 1 and a lifting mechanism 2. The lifting mechanism 2 includes a lifting plate 21, a fixing sleeve 22, a connecting plate 25, a control frame 212, a fixing frame 214, a lifting frame 23, and a support mechanism 3.

[0026] The bottom surface of the tabletop 1 is vertically fixed to the left and right sides of the lifting plate 21, and the lifting plate 21 is slidably fitted into a fixed sleeve 22 to form a table leg with a lifting structure. The two ends of the connecting plate 25 are fixedly connected to the lower half of the two fixed sleeves 22 respectively, connecting the two fixed sleeves 22 into one.

[0027] A track 26 is fixedly connected to the front end of the connecting plate 25. Two sliding sleeves 29 are provided on the track 26. A rectangular plate 217 is fixedly connected to the two sliding sleeves 29. An arc-shaped block 28 is fixedly connected to the outer side of the rectangular plate 217. The arc-shaped block 28 is a long plate with a rounded front end. An inclined block 27 is slidably connected to the inner side of the fixed sleeve 22. In this embodiment, the sliding method is that the fixed sleeve 22 is provided with a longitudinal wedge groove. A wedge block 210 is slidably arranged in the wedge groove. The upper end of the wedge block 210 is fixedly connected to the inclined block 27. The two ends of the lifting frame 23 are respectively fixedly connected to the bottom surface of an inclined block 27. The inclined block 27 is located below the arc-shaped block 28. The inclined surface of the inclined block 27 cooperates with the front end of the arc-shaped block 28, and the slope of the inclined surface of the inclined block 27 is made steeper, which can effectively prevent accidental touch. A kick plate 24 is provided in the middle of the lifting frame 23 for easy operation by students.

[0028] A spring is provided at the lower end of the lifting plate 21 and the bottom surface of the fixed sleeve 22. When the spring is not under force, the lifting plate is in the maximum extended position. The spring force needs to be selected appropriately or a damping component can be used. The advantage of setting the spring here is that when the table is raised, it is not necessary to lift the table with both hands. You only need to control the table. If the spring is not set, the fixed sleeve and support mechanism may also move when the table is raised, which will affect the normal adjustment.

[0029] The control frame 212 is installed on the inner side of the lifting plate 21. Specifically, the control frame is L-shaped. One end of the horizontal section is fixed to the upper part of the inner side of the lifting plate 21, and one side of the vertical section is adjacent to the inner side of the fixing sleeve 22. Two insertion holes are provided on the control frame along the vertical direction. A sliding groove is provided between the two insertion holes of the control frame for the insertion rod to slide on it and play a guiding role.

[0030] The fixed frame 214 is fixedly connected to the inner side of the fixed sleeve 22. A movable rod 211 is slidably connected to the fixed frame 214. A plug rod 213 is fixedly connected to the inner end of the movable rod 211. The plug rod 213 cooperates with the plug hole of the control frame 212. One side of the outer end of the movable rod 211 is fixedly connected to the rectangular plate 217, and the other side is provided with a wing plate 216. A return spring 215 is provided between the wing plate 216 and the fixed frame 214. The return spring 215 has two functions: one is that when the force applied by the inclined block 27 to the arc block 28 is canceled, its rebound will cause the plug rod and the plug hole to re-cooperate and limit the position; the other is to prevent the inclined block 27 from separating from the arc block 28. When it is at its maximum extension length, the inclined block 27 and the arc block 28 are in a cooperating state.

[0031] The support mechanism 3 includes a base plate 31, a support frame 32, and support blocks 37. The base plate 31 is fixedly connected to the bottom of the fixed sleeve 22 and to the support frame 32. Two support blocks 37 are slidably connected through the support frame 32. The bottom end of the support blocks 37 contacts the ground, and an adjusting plate 36 is fixedly connected to the side wall. The adjusting plate 36 extends laterally out of the support frame 32. A fixed plate 35 is fixedly connected to the base plate 31 corresponding to the adjusting plate 36. The fixed plate 35 has a through hole, and a nut 35 is fixedly connected to the through hole. The threaded rod is installed on the fixed plate through the nut. The lower end of the threaded rod 33 touches the top of the adjusting plate. The adjusting plate 36 has a slot to accommodate the front end of the threaded rod. The front side wall of the threaded rod has two symmetrical planes to facilitate the rotation of the threaded rod by a wrench. The rotation of the threaded rod can adjust the distance between the adjusting plate and the fixed plate, thereby enabling fine adjustment.

[0032] In use, the user holds both ends of the tabletop with both hands to prevent it from suddenly rising. The user then uses their foot to contact the kick plate and lift the tabletop upwards. As it rises, the lifting frame moves the inclined block upwards, and the inclined surface of the inclined block begins to contact the curved block. The front end of the curved block is compressed by the inclined surface, causing the curved block to move the sliding sleeve. The rectangular plate on the sliding sleeve moves the moving rod, causing the insertion rod at the front end of the moving rod to separate from the control frame's insertion hole. Under the push of the spring, the moving plate will move the tabletop upwards. Once the tabletop begins to move upwards, the user stops applying force to the kick plate. At this point, the insertion rod will contact the sliding groove and move within the groove until it reaches the next insertion hole. If the height is insufficient, the user can continue to apply force to the kick plate to adjust it. Lowering the tabletop works in the same way, but requires both hands to press down. The above operation solves the problem of raising and lowering the tabletop to a fixed height, which should meet the needs of most users. If it is still not suitable, a wrench can be used to manually adjust the support mechanism, and fine adjustments can be made by rotating the screw rod. Additionally, if the ground is uneven, adjustments can also be made by adjusting the support mechanism.

Claims

1. A height-adjustable desk for teaching, characterized by, Including table board, lifting mechanism, the lifting mechanism includes lifting plate, fixed sleeve, connecting plate, control frame, fixed frame, lifting frame, The left and right parts of the bottom surface of the table board are respectively fixedly connected with the lifting plates, the lifting plates are slidingly connected in a fixed sleeve, the connecting plate is fixedly connected with the lower half of the two fixed sleeves at both ends, and the two fixed sleeves are connected into an integral whole, an track is fixedly connected on the front end face of the connecting plate, two sliding sleeves are arranged on the track, a rectangular plate is fixedly connected on the two sliding sleeves, arc-shaped blocks are fixedly connected on the outer side of the rectangular plate, inclined blocks are slidingly connected on the inner side of the fixed sleeve, the lifting frames are respectively fixedly connected on the bottom surface of one inclined block at both ends, and the inclined surface of the inclined block is matched with the front end of the arc-shaped block, The control frame is installed on the inner side face of the lifting plate, and a plurality of insertion holes are arranged on the control frame in the vertical direction, The fixed frame is fixedly connected on the inner side face of the fixed sleeve, a moving rod is slidingly connected on the fixed frame, an insertion rod is fixedly connected on the inner side end of the moving rod, the insertion rod is matched with the insertion hole of the control frame, one end of the moving rod is fixedly connected with the rectangular plate, and a return spring is arranged between the moving rod and the fixed frame.

2. The height-adjustable desk for educational use according to claim 1, wherein It also comprises a supporting mechanism, including a bottom plate, a supporting frame and supporting blocks, the bottom plate is fixedly connected on the bottom of the fixed sleeve, the bottom plate is fixedly connected on the supporting frame, two supporting blocks are slidingly and penetratingly arranged on the supporting frame, the bottom end of the supporting block is in contact with the ground, an adjusting plate is fixedly connected on the side wall and extends out of the supporting frame, a fixed plate is fixedly connected on the bottom plate corresponding to the adjusting plate, a threaded rod is arranged on the fixed plate, and the lower end of the threaded rod is in contact with the top of the adjusting plate.

3. The height-adjustable desk for educational use according to claim 2, characterized in that, A slot is arranged on the adjusting plate for accommodating the front end of the threaded rod.

4. The height-adjustable desk for educational use according to claim 1, wherein A kick plate is arranged on the middle part of the lifting frame.

5. The height adjustable desk for educational use according to claim 1, wherein, A sliding groove is arranged between the two insertion holes of the control frame for sliding of the insertion rod.

6. The height-adjustable desk for educational use according to claim 1, wherein The fixed sleeve is provided with a longitudinal wedge-shaped groove, and a wedge-shaped block is slidingly arranged in the wedge-shaped groove, and the upper end of the wedge-shaped block is fixedly connected with the inclined block.

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