Geometry teaching demonstration instrument

Abstract

The utility model relates to the technical field of teaching instruments, and specifically discloses a geometry teaching demonstration instrument comprising a fixed box; the demonstration mechanism is mounted at the top end of the fixed box, and the demonstration mechanism can rotationally demonstrate a plurality of geometries; the demonstration mechanism comprises a rotating shaft, a fixed clamping groove, a demonstration plate, a spiral groove, a limiting block and a rotating gear, the outer surface of the rotating shaft is installed at the top end of the fixed box through a bearing, and the fixed clamping groove is formed in the outer wall of the rotating shaft; according to the utility model, the fixing clamping strip is directly inserted into the fixing clamping groove, and then the rotating shaft is sleeved with the limiting block and tightened, so that the rapid and convenient installation process of the demonstration board is realized, the fixing mode not only avoids the need of using additional tools, but also greatly improves the continuity and efficiency of teaching, and meanwhile, the teaching efficiency is greatly improved. The problem that a fixing point is possibly abraded and loosened in a traditional screw fixing mode is effectively solved, and therefore firm installation of the demonstration board is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of teaching instruments, and in particular relates to a geometry teaching demonstration instrument. Background Art

[0002] Geometry teaching is a broad and in-depth educational field. It involves the teaching of basic concepts and principles such as spatial shape, size, and positional relationships. Geometry teaching plays a vital role in cultivating students' spatial imagination, logical thinking ability, and mathematical literacy. Through geometry learning, students can better understand the spatial structure of the world around them, master methods to solve spatial problems, and at the same time exercise their logical thinking and reasoning abilities. In order to facilitate students' understanding of solid geometry knowledge, a demonstrator is generally used for geometry teaching demonstrations.

[0003] Chinese patent publication number CN211827794U discloses a multifunctional rotary teaching instrument. This instrument utilizes a motor-driven rotating shaft to demonstrate geometric shapes through the rotational motion of a demonstration board. This instrument exhibits the advantages of high rotation speed and stable rotation, which facilitates clear display of geometric outlines, facilitating student understanding and teacher instruction. Furthermore, the instrument includes an elastic pull cord to facilitate manual demonstrations when the battery is dead or damaged. However, during use, the demonstration board is directly fixed to the rotating shaft with screws. This screw-fixing method makes replacing the demonstration board quite cumbersome. Whenever the demonstration content needs to be updated or a damaged demonstration board needs to be replaced, the teacher must use tools to remove the screws one by one and then reinstall a new one. This process is time-consuming and labor-intensive, impacting the consistency and efficiency of teaching. Furthermore, screw-fixing also presents another major problem: wear and loosening of the fixing points. Prolonged use and repeated removal and installation can easily cause the fixing holes on the rotating shaft to enlarge or the threads to wear, making it impossible for the screws to securely secure the demonstration board. Utility Model Content

[0004] The purpose of the present invention is to provide a geometry teaching demonstration device to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A geometry teaching demonstration device, comprising:

[0007] Fixed box;

[0008] A demonstration mechanism is installed on the top of the fixed box and can rotate to demonstrate multiple geometric bodies;

[0009] The demonstration mechanism includes a rotating shaft, a fixed slot, a demonstration plate, a spiral groove, a limit block and a rotating gear. The outer surface of the rotating shaft is installed on the top of the fixed box through a bearing, the fixed slot is opened on the outer wall of the rotating shaft, the demonstration plate is installed inside the fixed slot, the spiral groove is opened on the upper part of the outer surface of the rotating shaft, the limit block is installed on the upper part of the outer surface of the rotating shaft through the spiral groove, and the rotating gear is installed on the lower part of the outer surface of the rotating shaft.

[0010] Preferably, the demonstration board includes a geometric plate and a fixed clip, the geometric plate is mounted on the outer wall of the fixed clip, and the outer surface of the fixed clip is mounted inside the fixed slot.

[0011] Preferably, the shape of the geometric plate can be one of a rectangle, a triangle, a trapezoid or a semicircle, the fixed clip and the fixed slot are both configured as a dovetail structure, and the outer surface of the limit block is provided with a plurality of anti-slip convex strips.

[0012] Preferably, handles are installed at both ends of the fixed box, a non-slip pad is installed at the bottom end of the fixed box, storage drawers are provided on both sides of the outer wall of the fixed box, pull rings are installed in the middle of the outer walls of the two storage drawers, and a control button is provided in the middle of the outer wall of the fixed box.

[0013] Preferably, a support frame is installed between the middle of the top inner wall and the middle of the bottom inner wall of the fixed box, the bottom inner wall of the support frame is provided with a driver, and the bottom end of the driver is installed on the bottom inner wall of the fixed box, the output end of the driver is provided with a drive shaft, and the outer surface of the drive shaft is installed with a drive gear.

[0014] Preferably, the driver is electrically connected to the control button, the outer surface of the driving gear is engaged with the outer surface of the rotating gear, and the diameter of the driving gear is larger than that of the rotating gear, and the control button is embedded in the outer wall of the fixed box.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] (1) The present invention sets a demonstration mechanism at the top of the fixing box. By directly inserting the fixing card strip into the fixing card slot and then putting the upper limit block on the rotating shaft and tightening it, a quick and convenient installation process of the demonstration board is achieved. This fixing method not only eliminates the need to use additional tools, but also greatly improves the consistency and efficiency of teaching. At the same time, it also effectively solves the problem of wear and loosening of the fixing point that may occur in the traditional screw fixing method, thereby ensuring the firm installation of the demonstration board.

[0017] (2) The utility model sets a driver and a driving gear inside the fixed box. The driver can be started by pressing the control button, so that it drives the driving gear to start rotating. Since the diameter of the driving gear is larger than the diameter of the rotating gear, this design enables the rotating shaft to receive a faster rotation speed, thereby driving the geometric plate to rotate quickly to form a geometric body. Through such a demonstration process, students can intuitively observe the formation of the geometric body, thereby deepening their understanding of geometric concepts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 A three-dimensional diagram of the demonstration mechanism of the utility model;

[0020] Figure 3 The present invention is a three-dimensional diagram of four demonstration boards of different shapes;

[0021] Figure 4 It is a cross-sectional view of the fixed box of the utility model;

[0022] In the figure: 1. Fixed box; 2. Demonstration mechanism; 3. Handle; 4. Anti-slip pad; 5. Storage drawer; 6. Pull ring; 7. Control button; 8. Support frame; 9. Driver; 10. Drive shaft; 11. Drive gear;

[0023] 21. Rotating shaft; 22. Fixed slot; 23. Demonstration board; 24. Spiral groove; 25. Limit block; 26. Rotating gear;

[0024] 231. Geometric board; 232. Fixed card strip. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Example 1:

[0027] See also Figures 1 to 4 As shown, a geometry teaching demonstration device includes:

[0028] Fixed box 1;

[0029] Demonstration mechanism 2, which is installed on the top of the fixed box 1 and can rotate to demonstrate multiple geometric bodies;

[0030] The demonstration mechanism 2 includes a rotating shaft 21, a fixed slot 22, a demonstration plate 23, a spiral groove 24, a limit block 25 and a rotating gear 26. The outer surface of the rotating shaft 21 is installed on the top of the fixed box 1 through a bearing, the fixed slot 22 is opened on the outer wall of the rotating shaft 21, the demonstration plate 23 is installed inside the fixed slot 22, the spiral groove 24 is opened on the upper part of the outer surface of the rotating shaft 21, the limit block 25 is installed on the upper part of the outer surface of the rotating shaft 21 through the spiral groove 24, and the rotating gear 26 is installed on the lower part of the outer surface of the rotating shaft 21.

[0031] Depend on Figure 2 and Figure 3 It can be seen that the demonstration board 23 includes a geometry board 231 and a fixed clip 232 . The geometry board 231 is mounted on the outer wall of the fixed clip 232 , and the outer surface of the fixed clip 232 is mounted inside the fixed slot 22 .

[0032] As can be seen from the above, first, the fixing strip 232 on the geometry board 231 is inserted into the fixing slot 22, and then the upper limit block 25 is put on the rotating shaft 21. Through the interaction between the limit block 25 and the spiral groove 24 on the rotating shaft 21, the limit block 25 moves downward on the rotating shaft 21 until the geometry board 231 is firmly installed on the rotating shaft 21. This design realizes the quick and convenient installation of the demonstration board 23. When it is necessary to replace the demonstration board 23 of a different shape, you only need to simply rotate the limit block 25 and easily remove it from the rotating shaft 21 to achieve the quick replacement of the demonstration board 23. This fixing method not only avoids the need for additional tools, but also greatly improves the continuity and efficiency of teaching. At the same time, it also effectively solves the problems of wear and loosening of the fixing points that may occur in the traditional screw fixing method, thereby ensuring the firm installation of the demonstration board 23 and further improving the reliability and safety of use.

[0033] Specifically, refer to Figure 2 and Figure 3 As shown, the shape of the geometric plate 231 can be a rectangle, a triangle, a trapezoid or a semicircle, the fixed clip 232 and the fixed slot 22 are both configured as a dovetail structure, and the outer surface of the limit block 25 is provided with a plurality of anti-slip convex strips.

[0034] As can be seen from the above, geometric plates 231 of different shapes can be rotated to form geometric bodies such as cylinders, cones, truncated cones or spheres. The dovetail structure ensures that the fixed clip 232 is firmly connected to the fixed slot 22, and the anti-slip ridges can increase the friction on the outer surface of the limit block 25.

[0035] Example 2:

[0036] refer to Figure 1 and Figure 4As shown, handles 3 are installed at both ends of the fixed box 1, a non-slip pad 4 is installed at the bottom end of the fixed box 1, storage drawers 5 are provided on both sides of the outer wall of the fixed box 1, pull rings 6 are installed in the middle of the outer wall of the two storage drawers 5, and a control button 7 is provided in the middle of the outer wall of the fixed box 1;

[0037] A support frame 8 is installed between the middle of the top inner wall and the middle of the bottom inner wall of the fixed box 1. A driver 9 is provided on the bottom inner wall of the support frame 8, and the bottom end of the driver 9 is installed on the bottom inner wall of the fixed box 1. A drive shaft 10 is provided at the output end of the driver 9, and a drive gear 11 is installed on the outer surface of the drive shaft 10.

[0038] As can be seen from the above, first, by pulling the pull ring 6 on the storage drawer 5, the storage drawer 5 can be easily taken out from the fixed box 1. In the storage drawer 5, demonstration boards 23 of various shapes and other related objects can be neatly stored. When the teacher needs to demonstrate geometric concepts to students, they will first take out the required demonstration board 23 from the storage drawer 5 and install it on the rotating shaft 21. Then, the teacher presses the control button 7 to trigger the driver 9 to start. The operation of the driver 9 drives the rotation of the drive shaft 10, and then the drive gear 11 also starts to rotate. Through the precise meshing transmission between the driving gear 11 and the rotating gear 26, power is effectively transmitted to the rotating shaft 21. Since the diameter of the driving gear 11 is larger than the diameter of the rotating gear 26, according to the principle of gear transmission, this design enables the rotating shaft 21 to rotate at a faster speed. Finally, the rapid rotation of the rotating shaft 21 drives the rotation of the demonstration board 23, causing the demonstration board 23 to rotate rapidly, thereby forming a dynamic geometric body. By observing this demonstration process, students can intuitively understand the formation process of geometric bodies, thereby deepening their understanding and mastery of geometric concepts.

[0039] Preferably, reference Figure 1 and Figure 4 As shown, the driver 9 is electrically connected to the control button 7 , the outer surface of the driving gear 11 is meshed with the outer surface of the rotating gear 26 , and the diameter of the driving gear 11 is larger than that of the rotating gear 26 , and the control button 7 is embedded in the outer wall of the fixed box 1 .

[0040] As can be seen from the above, the opening and closing of the driver 9 can be controlled by the control button 7. When the driving gear 11 engages with the rotating gear 26 and rotates, the rotation speed of the rotating gear 26 can be accelerated. The embedded installation of the control button 7 prevents it from being accidentally touched.

[0041] Application examples:

[0042] This design is used in school education environments, especially in classes such as physics, mathematics or science that require intuitive demonstration of geometric concepts. Such a teaching demonstrator can provide students with a vivid and intuitive learning experience, helping them to better understand complex geometric principles and concepts. This design applies the principle of mechanical transmission, and starts the driver 9 through the control button 7. Then, the driving gear 11 and the rotating gear 26 are engaged to transmit power to the rotating shaft 21 to drive the geometric plate 231 to rotate rapidly to form a geometric body. The demonstration board 23 can be quickly installed and disassembled through the demonstration mechanism 2, so that teachers can quickly change different demonstration contents as needed, thereby improving the continuity and efficiency of teaching, and dynamically displaying the formation process of geometric bodies, so that students can learn geometric knowledge in an intuitive and vivid environment, enhancing their learning experience and interest.

[0043] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A geometry teaching demonstration device, characterized in that: include: Fixed box (1); A demonstration mechanism (2), wherein the demonstration mechanism (2) is installed on the top of the fixed box (1), and the demonstration mechanism (2) can rotate to demonstrate multiple geometric bodies; The demonstration mechanism (2) comprises a rotating shaft (21), a fixed slot (22), a demonstration plate (23), a spiral groove (24), a limit block (25) and a rotating gear (26); the outer surface of the rotating shaft (21) is mounted on the top of the fixed box (1) via a bearing; the fixed slot (22) is provided on the outer wall of the rotating shaft (21); the demonstration plate (23) is mounted inside the fixed slot (22); the spiral groove (24) is provided on the upper outer surface of the rotating shaft (21); the limit block (25) is mounted on the upper outer surface of the rotating shaft (21) via the spiral groove (24); and the rotating gear (26) is mounted on the lower outer surface of the rotating shaft (21).

2. A geometry teaching demonstration device according to claim 1, characterized in that: The demonstration board (23) comprises a geometric board (231) and a fixed card strip (232), wherein the geometric board (231) is mounted on the outer wall of the fixed card strip (232), and the outer surface of the fixed card strip (232) is mounted inside the fixed card slot (22).

3. A geometry teaching demonstration device according to claim 2, characterized in that: The shape of the geometric plate (231) can be one of a rectangle, a triangle, a trapezoid or a semicircle, the fixed clip (232) and the fixed clip slot (22) are both configured as a dovetail structure, and the outer surface of the limit block (25) is provided with a plurality of anti-slip convex strips.

4. A geometry teaching demonstration device according to claim 1, characterized in that: Both ends of the fixed box (1) are equipped with handles (3), the bottom end of the fixed box (1) is equipped with an anti-slip pad (4), storage drawers (5) are provided on both sides of the outer wall of the fixed box (1), pull rings (6) are provided in the middle of the outer wall of the two storage drawers (5), and a control button (7) is provided in the middle of the outer wall of the fixed box (1).

5. A geometry teaching demonstration device according to claim 4, characterized in that: A support frame (8) is installed between the middle of the top inner wall and the middle of the bottom inner wall of the fixed box (1); a driver (9) is provided on the bottom inner wall of the support frame (8); and the bottom end of the driver (9) is installed on the bottom inner wall of the fixed box (1); a drive shaft (10) is provided at the output end of the driver (9); and a drive gear (11) is installed on the outer surface of the drive shaft (10).

6. A geometry teaching demonstration device according to claim 5, characterized in that: The driver (9) is electrically connected to the control button (7), the outer surface of the driving gear (11) is meshed with the outer surface of the rotating gear (26), and the diameter of the driving gear (11) is larger than the diameter of the rotating gear (26), and the control button (7) is embedded in the outer wall of the fixed box (1).

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