A combination teaching aid

Abstract

The utility model is suitable for teaching aid technical field provides a combined teaching aid, including bottom plate, both ends of bottom plate all have the half frame body of rectangular and top open through hinge joint, two half frame bodies and bottom plate combination form the rectangular box body of top open. The combined teaching aid, through setting up half frame body, movable board and tool box, two half frame bodies and bottom plate combination form a top open box structure in the device, the handle is provided with in the top of box structure, the teacher can hold the handle conveniently carries the device whole and moves, when using on the classroom, can open two half frame bodies, then lift movable board, the structure of movable board inside can constitute iron stand, and other experimental apparatus can be saved in the inside of tool box and can be taken out at any time, the teacher is convenient to use experimental apparatus on the classroom and shows various chemical reactions, thereby improved the practicality of the device.

Description

Technical Field

[0001] This utility model belongs to the field of teaching aids technology, and in particular relates to a combined teaching aid. Background Technology

[0002] Teaching aids are a collective term for various tools and equipment used to assist teachers in carrying out teaching activities and help students understand knowledge. They are widely used in all stages of education, from preschool and basic education to higher education, and cover various types such as subject tools, visual aids, and modern teaching equipment. They can transform abstract knowledge into concrete content. For example, through geometric models, students can intuitively perceive the structure of three-dimensional figures, and with the help of experimental equipment, students can verify scientific principles by hand. This not only reduces the difficulty of understanding knowledge but also stimulates students' learning interest and hands-on ability. At the same time, it helps teachers to more efficiently convey teaching information and demonstrate key teaching points. It is an important bridge connecting teaching and learning and plays an irreplaceable role in improving teaching quality and cultivating students' comprehensive qualities.

[0003] In chemistry teaching, various experimental tools are needed to help students understand the chemical reactions between different elements more intuitively. Therefore, teaching aids for chemistry teaching are particularly important. There is a high degree of overlap between chemical teaching aids and experimental tools. However, there are many types of tools for chemical experiments, which are not easy to bring into the classroom, making it inconvenient. Utility Model Content

[0004] This utility model provides a combined teaching tool, which aims to solve the problem that there is a high degree of overlap between chemical teaching tools and experimental tools, but chemical experiments have many types of tools that cannot be easily brought into the classroom, which is quite inconvenient.

[0005] This utility model is implemented as follows: a combined teaching tool includes a base plate, and both ends of the base plate are hinged to rectangular half-frames with open tops. The two half-frames and the base plate are combined to form a rectangular box with an open top. A connecting seat is fixedly connected to one end of the upper surface of the base plate. A movable plate is hinged to the top of the connecting seat. Fixed blocks are fixedly connected to both ends of the lower surface of the movable plate. A connecting rod is fixedly connected between the two fixed blocks along the length of the movable plate. Multiple slip rings are slidably connected to the outer surface of the connecting rod along its length. A threaded hole is opened laterally through one side surface of each of the multiple slip rings. A threaded post is threadedly connected inside each of the multiple threaded holes. A torsion plate is fixedly connected to the outer surface of each of the multiple threaded posts. A connecting tube is fixedly connected to the bottom end of each of the multiple slip rings.

[0006] Preferably, side plates are fixedly connected to both sides of the movable plate along its length, a support strip is hinged to the inner surface of one of the side plates, and an insertion hole corresponding to the support strip is opened on the upper surface of the base plate.

[0007] Preferably, a plurality of graduated cylinder racks, alcohol lamp holders and test tube racks are fixedly connected to the other side of the upper surface of the base plate.

[0008] Preferably, each of the two half-frames has a toolbox with an open top inside. Both sides of the toolbox are laterally rotatably connected to connecting blocks. The connecting blocks on both sides are rotatably connected to the two sides inside the half-frame. A counterweight is fixedly connected to the bottom center of the toolbox.

[0009] Preferably, an arched handle is fixedly connected to the top of each of the two inner ends of the half-frame, and a strip-shaped magnetic block is fixedly connected to the surface of each of the two handles on opposite sides, and the two magnetic blocks attract each other.

[0010] Preferably, all of the connecting pipes have internal threads.

[0011] Preferably, the top of each of the two tool boxes is hinged to a lid, and a cylindrical handle is fixedly connected to one side of the upper surface of each lid.

[0012] Beneficial effects Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a combined teaching tool, which, by setting up a half-frame, a movable plate, and a toolbox, combines the two half-frames and the base plate to form a box structure with an open top. A handle is provided at the top of the box structure, allowing the teacher to easily carry the entire device. When used in the classroom, the two half-frames can be opened, and then the movable plate can be lifted. The structure inside the movable plate can form an iron stand, while other experimental tools can be stored inside the toolbox and retrieved at any time. This facilitates the teacher's use of experimental tools to demonstrate various chemical reactions in the classroom, thereby improving the practicality of the device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the unfolded structure of this utility model; Figure 2 This is a schematic diagram of the closed-state structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of the movable plate in this utility model; Figure 4 for Figure 3 A magnified view of a portion of area A in the middle.

[0014] In the diagram: 1-base plate, 2-half frame, 3-tool box, 4-handle, 5-magnetic block, 6-connecting seat, 7-movable plate, 8-side plate, 9-fixing block, 10-connecting rod, 11-support bar, 12-insertion hole, 13-slip ring, 14-threaded hole, 15-twist plate, 16-connecting tube, 17-measuring cylinder rack, 18-alcohol lamp holder, 19-test tube rack. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0016] Please see Figure 1-4 This utility model provides a technical solution: a combined teaching tool, including a base plate 1, with rectangular half-frames 2 with open tops hinged to both ends of the base plate 1, the two half-frames 2 and the base plate 1 combined to form a rectangular box with an open top. A connecting seat 6 is fixedly connected to one end of the upper surface of the base plate 1. A movable plate 7 is hinged to the top of the connecting seat 6. Fixed blocks 9 are fixedly connected to both ends of the lower surface of the movable plate 7. A connecting rod 10 is fixedly connected between the two fixed blocks 9 along the length of the movable plate 7. Multiple slip rings 13 are slidably connected to the outer surface of the connecting rod 10 along its length. A threaded hole 14 is opened laterally through one side surface of each of the multiple slip rings 13. Threaded posts are threaded into the interior of each of the multiple threaded holes 14. Torsion plates 15 are fixedly connected to the outer surface of each of the multiple threaded posts. A connecting pipe 16 is fixedly connected to the bottom end of each of the multiple slip rings 13.

[0017] Both half-frames 2 have toolboxes 3 with open tops inside. Both sides of the toolboxes 3 are connected to connecting blocks that rotate laterally. The connecting blocks on both sides are rotatably connected to the two sides inside the half-frames 2. A counterweight is fixedly connected to the bottom center of the toolboxes 3.

[0018] An arched handle 4 is fixedly connected to the top of the inner end of each of the two semi-frames 2. A strip-shaped magnetic block 5 is fixedly connected to the surface of each of the two handles 4 on the opposite side. The two magnetic blocks 5 attract each other.

[0019] In this embodiment, when the two half-frames 2 of the device are closed, the two handles 4 also fit together, forming a rectangular box with an open top. The teacher can carry the device by the handles 4. In actual use, the device is placed on a table or any surface, then the two half-frames 2 are pried open and the movable plate 7 is lifted to make it vertical. Then the position of the multiple slip rings 13 on the movable plate 7 can be adjusted. During adjustment, first pinch the twist plate 15 and rotate the threaded column outward to separate its inner end from the outer surface of the connecting rod 10. Then, move the slip rings 13. 3. After the position of the slip ring 13 is adjusted to a suitable height, pinch the twist plate 15 and rotate the threaded column inward so that the inner end of the threaded column is in contact with the outer surface of the connecting rod 10. Under the action of friction, the slip ring 13 is fixed. After it is fixed, asbestos board or clamping ring or other tools can be installed on the outer end of the connecting tube 16 of multiple slip rings 13. At this time, the movable plate 7 structure can be used as an iron stand. Beakers or test tubes and other experimental tools can be placed on it for experimental operations. Asbestos board, test tubes and other tools can be stored in the tool box 3 set inside the two half-frames 2 for easy access.

[0020] When the two handles 4 are in contact with each other, the magnetic blocks 5 on them are tightly attached under the action of magnetic force, so that the two half-frames 2 will not easily separate, thus improving the overall structural stability of the device.

[0021] The toolbox 3 is rotatably connected to the half-frame 2 via connecting blocks on both sides. At the same time, a counterweight is set in the middle of its bottom end. The counterweight ensures that the center of gravity of the toolbox 3 is always kept in the middle of its bottom end. During the opening of the half-frame 2, the toolbox 3 can always maintain a roughly horizontal state, so that the experimental equipment stored inside will not be overturned as the half-frame 2 is turned, thus providing a certain degree of protection for the experimental equipment.

[0022] Furthermore, side plates 8 are fixedly connected to both sides of the movable plate 7 along its length direction, and a support strip 11 is hinged to the inner surface of one side plate 8. The upper surface of the base plate 1 is provided with a socket 12 corresponding to the support strip 11.

[0023] In this embodiment, after the movable plate 7 is erected, the support bar 11 can be pushed downwards so that its bottom end is inserted into the hole 12. The movable plate 7 can be supported by the support bar 11. The support bar 11, the movable plate 7 and the base plate 1 form a triangular structure to ensure the vertical stability of the movable plate 7.

[0024] Furthermore, multiple graduated cylinder racks 17, alcohol lamp holders 18, and test tube racks 19 are fixedly connected to the other side of the upper surface of the base plate 1.

[0025] In this embodiment, a measuring cylinder can be placed on the measuring cylinder rack 17, and the bottom end of the alcohol lamp holder 18 is provided with an insertion hole that is compatible with the bottom end of the alcohol lamp. After the alcohol lamp is placed inside, it can be limited and fixed. The test tube rack 19 is used to place test tubes.

[0026] Furthermore, the interior of each of the multiple connecting pipes 16 is provided with internal threads.

[0027] In this embodiment, the connecting block 16 has an internal thread so that the tool installed with it can be connected by a threaded connection, which is more stable and ensures the safety of the experimental process.

[0028] Furthermore, both tool boxes 3 have lids hinged to their tops, and each lid has a cylindrical handle fixedly attached to one side of its upper surface.

[0029] In this embodiment, the lid serves a protective function, while the cylindrical handle facilitates the opening of the lid by staff.

[0030] The working principle and usage process of this utility model: After the utility model is installed, when the two half-frames 2 are closed, the two handles 4 also fit together, forming a rectangular box with an open top. Teachers can carry the device by the handles 4. In actual use, place the device on a table or any surface, then pry the two half-frames 2 outwards and lift the movable plate 7 to make it vertical. Then, adjust the position of the multiple sliding rings 13 on the movable plate 7. When adjusting, first pinch the twist plate 15 and rotate the threaded column outwards so that its inner end is aligned with the outer surface of the connecting rod 10. Separate, then move the slip ring 13. When the position of the slip ring 13 is adjusted to a suitable height, pinch the twist plate 15 and rotate the threaded column inward so that the inner end of the threaded column is in contact with the outer surface of the connecting rod 10. Under the action of friction, the slip ring 13 is fixed. After it is fixed, asbestos boards or clamping rings can be installed on the outer end of the connecting tube 16 of multiple slip rings 13. At this time, the movable plate 7 structure can be used as an iron stand. Beakers or test tubes and other experimental tools can be placed on it for experimental operations. The asbestos boards, test tubes and other tools can be stored in the tool box 3 set inside the two half-frames 2 for easy access.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A modular teaching aid, characterized in that: Includes a base plate (1), both ends of which are hinged to a rectangular half-frame (2) with an open top. The two half-frames (2) and the base plate (1) are combined to form a rectangular box with an open top. A connecting seat (6) is fixedly connected to one end of the upper surface of the base plate (1). A movable plate (7) is hinged to the top of the connecting seat (6). Fixed blocks (9) are fixedly connected to both ends of the lower surface of the movable plate (7). A connecting rod (10) is fixedly connected between the two fixed blocks (9) along the length of the movable plate (7). Multiple slip rings (13) are slidably connected to the outer surface of the connecting rod (10) along its length. A threaded hole (14) is opened transversely on one side surface of each of the multiple slip rings (13). A threaded column is threaded inside each of the multiple threaded holes (14). A torsion plate (15) is fixedly connected to the outer surface of each of the multiple threaded columns. A connecting pipe (16) is fixedly connected to the bottom end of each of the multiple slip rings (13).

2. The combined teaching aid as described in claim 1, characterized in that: Both sides of the movable plate (7) are fixedly connected with side plates (8) along their length direction. A support strip (11) is hinged to the inner surface of one of the side plates (8). The upper surface of the base plate (1) is provided with a socket (12) corresponding to the support strip (11).

3. The combined teaching aid as described in claim 1, characterized in that: Multiple measuring cylinder racks (17), alcohol lamp holders (18), and test tube racks (19) are fixedly connected to the other side of the upper surface of the base plate (1).

4. The combined teaching aid as described in claim 1, characterized in that: Both of the two half-frames (2) are equipped with tool boxes (3) with open tops. Both sides of the tool box (3) are connected to connecting blocks that rotate laterally. The connecting blocks on both sides are respectively connected to the two sides of the inside of the half-frame (2). A counterweight is fixedly connected to the middle of the bottom of the tool box (3).

5. A combined teaching aid as described in claim 1, characterized in that: An arched handle (4) is fixedly connected to the top of the inner end of each of the two half-frames (2), and a strip-shaped magnetic block (5) is fixedly connected to the surface of each of the two handles (4) on the opposite side. The two magnetic blocks (5) attract each other.

6. The combined teaching aid as described in claim 1, characterized in that: The internal threads of each of the connecting pipes (16) are provided.

7. A combined teaching aid as described in claim 4, characterized in that: Both tool boxes (3) have lids hinged to their tops, and each lid has a cylindrical handle fixedly connected to one side of its upper surface.

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