A teaching aid for demonstrating electromagnetic induction

Abstract

The utility model discloses a kind of teaching aids of demonstration electromagnetic induction phenomenon, it is related to teaching aid technical field, including support mechanism and respectively assembled in the operating mechanism and magnetic field display mechanism of the top of support mechanism;The support mechanism includes support seat, and the inner wall top of the support seat is fixedly installed with air blowing head;The operating mechanism includes transparent tube fixedly installed in the top of the support seat, and the bottom of the transparent tube and the air blowing head are interconnected, and the inside of the transparent tube is slidably installed with magnet block, and the periphery of the transparent tube is fixedly installed with limit disc, and copper wire coil is wound between the limit disc;The teaching aid of demonstration electromagnetic induction phenomenon, by the cooperation between magnetic field display mechanism and operating mechanism, can provide magnetic field distribution mode and electromagnetic induction mode, can be switched flexibly, entire demonstration process does not need to manually dial magnet block to move, reduce the operation difficulty, bring more convenience to teaching.

Description

Technical Field

[0001] This utility model relates to the field of teaching aids technology, specifically to a teaching aid that demonstrates electromagnetic induction phenomena. Background Technology

[0002] In modern education, electromagnetic induction is an extremely important knowledge area, with Faraday's law of electromagnetic induction being a key and challenging topic. Electromagnetic induction reveals the profound connection between electricity and magnetism, serving as the theoretical foundation for many fields such as modern power industry and electronics. From generators converting mechanical energy into electrical energy, to transformers transforming voltage, and to the applications of various electromagnetic sensors in industrial production and daily life, all rely on the principle of electromagnetic induction. Therefore, enabling students to deeply understand electromagnetic induction and its laws is crucial for cultivating their scientific literacy and innovative abilities. In the teaching process, teachers need to use various teaching aids to help students develop an intuitive understanding of electromagnetic induction.

[0003] However, while existing teaching aids for demonstrating electromagnetic induction can demonstrate the basic phenomenon of magnetism generating electricity to some extent, the demonstration effect is relatively simple and it is not convenient for students to intuitively observe the distribution of the magnetic field, resulting in an insignificant teaching effect. In addition, during the demonstration, teachers need to frequently manually move the magnets to perform rapid operations, which brings a lot of inconvenience to teaching. Utility Model Content

[0004] The purpose of this invention is to provide a teaching aid for demonstrating electromagnetic induction phenomena, in order to solve the problems of existing technologies where the demonstration effect is relatively simple, it is inconvenient for students to intuitively observe the distribution of the magnetic field, and at the same time, it requires manual manipulation of magnets for rapid movement during the demonstration, which brings many inconveniences to teaching.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a teaching aid for demonstrating electromagnetic induction phenomena, comprising:

[0006] A support mechanism and an operating mechanism and a magnetic field display mechanism respectively assembled on the top of the support mechanism;

[0007] The support mechanism includes a support base, and an air blowing head is fixedly installed on the top of the inner wall of the support base;

[0008] The operating mechanism includes a transparent tube fixedly installed on the top of the support base. The bottom of the transparent tube is connected to the air blowing head. A magnet is slidably installed inside the transparent tube. A limiting plate is fixedly installed on the outer periphery of the transparent tube. A copper wire coil is wound between the limiting plates. An LED light corresponding to the copper wire coil is fixedly installed at the front end of the limiting plate.

[0009] The magnetic field display mechanism includes a magnetic field display panel inserted into the top of the support base, and the interior of the magnetic field display panel is filled with a mixture of oil and iron filings.

[0010] Furthermore, an air pump is fixedly installed inside the support base, and the air outlet of the air pump is connected to the air blowing head.

[0011] Furthermore, an air inlet is provided on one side of the support base, and the air inlet corresponds to the air inlet end of the air pump.

[0012] Furthermore, the top of the blowing head is provided with an air outlet, and the top of the transparent tube is provided with a vent.

[0013] Furthermore, a slot is fixedly installed on the top of the support base, and the bottom of the magnetic field display panel is inserted into the slot.

[0014] Furthermore, the magnetic field display panel is made of a transparent material, and the interior of the magnetic field display panel has a cavity for filling the oil-iron-shaving mixture, which is formed by mixing iron filings with oil.

[0015] Furthermore, the bottom of the support base is fixedly equipped with anti-slip feet, and the limiting plate and the LED light are fixedly connected by a fixing bracket.

[0016] Compared with existing technologies, this utility model provides a teaching aid for demonstrating electromagnetic induction phenomena. Through the cooperation between the magnetic field display mechanism and the operating mechanism, it can provide magnetic field distribution mode and electromagnetic induction mode, which can be flexibly switched. When the magnetic field display board is inserted around the transparent tube, it can be switched to magnetic field distribution mode. When the airflow is blown by the air blown, it can push the magnet block to move along the transparent tube or suspend it in the transparent tube, so that the iron filings in the magnetic field display board can be arranged according to the magnetic attraction. Through the surrounding distribution of the magnetic field display board, the distribution trajectory of the magnetic field can be displayed in three dimensions, allowing students to intuitively observe the distribution of the magnetic field. When the magnetic field display board is removed, it can be switched to electromagnetic induction mode. By blowing the magnet block to move it quickly along the transparent tube, it can cut the magnetic field with the copper wire coil, generating current to turn the LED light on and off, which is convenient for demonstrating the electromagnetic induction effect. The entire demonstration process does not require manual movement of the magnet block, reducing the difficulty of operation and bringing more convenience to teaching. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0019] Figure 2 A schematic diagram of the support mechanism structure provided in the embodiment of this utility model;

[0020] Figure 3 A schematic diagram of the operating mechanism structure provided for an embodiment of this utility model;

[0021] Figure 4 This is a cross-sectional view of the transparent tube and support provided in an embodiment of the present utility model;

[0022] Figure 5 This is a cross-sectional structural diagram of the magnetic field display panel provided in an embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Support mechanism; 11. Support base; 12. Anti-slip feet; 13. Air inlet; 14. Slot seat; 15. Air blower; 16. Air outlet; 17. Air pump; 2. Magnetic field display mechanism; 21. Magnetic field display board; 22. Receiving cavity; 23. Oil-iron filings mixture; 3. Running mechanism; 31. Transparent tube; 32. Limiting plate; 33. Copper wire coil; 34. Fixing frame; 35. LED light; 36. Vent hole; 37. Magnet block. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] As attached Figure 1 To be continued Figure 5 As shown:

[0027] Example 1:

[0028] This utility model provides a teaching aid for demonstrating electromagnetic induction phenomena, comprising:

[0029] Support mechanism 1 and operating mechanism 3 and magnetic field display mechanism 2 respectively assembled on the top of support mechanism 1;

[0030] The support mechanism 1 includes a support base 11, and an air blowing head 15 is fixedly installed on the top of the inner wall of the support base 11;

[0031] The operating mechanism 3 includes a transparent tube 31 fixedly installed on the top of the support base 11. The bottom of the transparent tube 31 is connected to the air blowing head 15. A magnet block 37 is slidably installed inside the transparent tube 31. A limiting plate 32 is fixedly installed on the outer periphery of the transparent tube 31. A copper wire coil 33 is wound between the limiting plates 32. An LED light 35 corresponding to the copper wire coil 33 is fixedly installed at the front end of the limiting plate 32.

[0032] The magnetic field display mechanism 2 includes a magnetic field display plate 21 inserted into the top of the support base 11, and the interior of the magnetic field display plate 21 is filled with an oil-iron filings mixture 23.

[0033] As can be seen from the above, when using this device, placing it in a suitable position on a table allows the support base 11 to support the operating mechanism 3 and the magnetic field display mechanism 2. When the magnetic field display panel 21 is inserted into the support base 11, multiple magnetic field display panels 21 can surround the transparent tube 31, allowing switching to the magnetic field distribution mode. By blowing air into the transparent tube 31 through the air blower 15, the airflow can push the magnet block 37 upward along the transparent tube 31. By controlling the size of the airflow, the movement speed of the magnet block 37 within the transparent tube 31 can be easily controlled. When in magnetic field display mode, the magnet block 37 can be slowly pushed upward. The movement of iron block 37, utilizing its own magnetic field attraction, can attract the oil-iron filings mixture 23 inside the magnetic field display panel 21. This allows the iron filings in the mixture to arrange themselves into a magnetic field trajectory based on the attraction. The movement of iron block 37 allows for a direct observation of the changes in the magnetic field. The surrounding distribution of the magnetic field on the display panel 21 provides a three-dimensional view of the magnetic field's distribution trajectory. Furthermore, airflow can cause iron block 37 to suspend within the transparent tube 31, allowing for a static observation of the magnetic field's trajectory through the display panel 21. This enables students to directly observe the distribution of the magnetic field, thus improving the teaching effectiveness.

[0034] After disassembling the magnetic field display panel 21, the electromagnetic induction mode can be switched. The air blower 15 blows the magnet 37 to move it quickly along the transparent tube 31 to the top position. At the same time, the magnet 37 can fall freely along the transparent tube 31. The magnet 37 can move up and down quickly and repeatedly inside the transparent tube 31. The magnetic field can be cut between the magnet 37 and the copper wire coil 33. The current generated during the magnetic field cutting can be used to turn the LED light 35 on and off. This makes it easy to demonstrate the electromagnetic induction effect. The entire demonstration process does not require manual movement of the magnet 37, which reduces the difficulty of operation and brings more convenience to teaching.

[0035] During the electromagnetic induction mode, the magnetic field display board 21 can be inserted into the support base 11. When the magnetic block 37 moves quickly and generates a magnetic field with the copper wire coil 33, the trajectory of the iron filings in the magnetic field display board 21 can change, and the distribution and changes of the magnetic field generated during magnetic cutting can be displayed intuitively.

[0036] From the appendix Figure 4 It can be seen that an air pump 17 is fixedly installed inside the support base 11, and the air outlet of the air pump 17 is connected to the air blowing head 15.

[0037] As can be seen from the above, the air pump 17 can provide an air source for the air blowing head 15, and the airflow can be delivered to the transparent tube 31 through the air blowing head 15. The airflow can be used to move the magnet 37 within the transparent tube 31 without the need to manually move the magnet 37.

[0038] For details, please refer to the appendix. Figure 4 As shown, an air inlet 13 is provided on one side of the support base 11, and the air inlet 13 corresponds to the air inlet end of the air pump 17.

[0039] As can be seen from the above, the air inlet 13 allows air to easily enter the support base 11, which can provide air intake for the air pump 17, enabling the air pump 17 to normally deliver airflow into the transparent tube 31 to blow the magnet block 37 to move.

[0040] For details, please refer to the appendix. Figure 4 As shown, the top of the blowing head 15 has an air outlet 16, and the top of the transparent tube 31 has an air vent 36.

[0041] As can be seen from the above, the air outlet 16 allows the air blower 15 to normally deliver airflow into the transparent tube 31. When the magnet 37 falls, the air outlet 16 can intercept the magnet 37, preventing it from falling into the air blower 15. When the magnet 37 moves upward, the air outlet 36 can be used to expel the air from the top of the magnet 37, allowing the magnet 37 to move up and down normally.

[0042] Working principle: By inserting multiple magnetic field display panels 21 onto the support base 11, they can surround the transparent tube 31. Airflow is generated by the air pump 17 and blown into the transparent tube 31 through the air blower 15. By controlling the airflow, the magnet block 37 can be slowly moved along the transparent tube 31, causing the iron filings inside the magnetic field display panel 21 to change according to the magnetic field attraction. Through the surrounding distribution of the magnetic field display panels 21, the distribution trajectory of the magnetic field can be displayed in three dimensions. By disassembling the magnetic field display panel 21, the airflow speed can be increased by the air blower 15, which can push the magnet block 37 to move quickly along the transparent tube 31 to the top, allowing the magnet block 37 to fall freely from a height. By repeatedly moving the magnet block 37 up and down quickly, a magnetic field can be generated between it and the copper wire coil 33, which can generate current to turn the LED light 35 on and off, making it convenient to demonstrate the electromagnetic induction effect.

[0043] Example 2:

[0044] Reference Appendix Figure 1 As shown, a slot seat 14 is fixedly installed on the top of the support base 11, and the bottom of the magnetic field display panel 21 is inserted into the slot seat 14.

[0045] As can be seen from the above, by inserting the bottom of the magnetic field display panel 21 into the slot seat 14 from the outside in, the magnetic field display panel 21 can be easily installed around the transparent tube 31. The slot seat 14 can support the magnetic field display panel 21, making it convenient to install and remove the magnetic field display panel 21.

[0046] Reference Appendix Figure 5 As shown, the magnetic field display panel 21 is made of transparent material. The magnetic field display panel 21 has an internal cavity 22 for filling the oil-iron-shaving mixture 23. The oil-iron-shaving mixture 23 is made by mixing iron filings with oil.

[0047] As can be seen from the above, the magnetic field display panel 21 made of transparent material can conveniently and intuitively show the distribution of iron filings inside. The containment cavity 22 can contain the oil-iron filings mixture 23. Since the iron filings can be evenly distributed and suspended in the oil, they can be easily arranged into a magnetic field trajectory under the influence of magnetic field attraction, making it convenient for students to observe the magnetic field distribution intuitively.

[0048] Reference Appendix Figure 1 and attached Figure 3 As shown, the bottom of the support base 11 is fixedly equipped with anti-slip feet 12, and the limiting plate 32 and the LED light 35 are fixedly connected by a fixing bracket 34.

[0049] As can be seen from the above, the anti-slip feet 12 can provide convenient support for the support base 11. The anti-slip feet 12 can increase the friction between the support base 11 and the tabletop, preventing the support base 11 from shifting. The fixing bracket 34 can provide a convenient installation position for the LED light 35 and can conveniently support the LED light 35.

[0050] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A teaching aid for demonstrating electromagnetic induction, characterized in that, include: The support mechanism (1) and the operating mechanism (3) and magnetic field display mechanism (2) respectively assembled on the top of the support mechanism (1); The support mechanism (1) includes a support base (11), and an air blowing head (15) is fixedly installed on the top of the inner wall of the support base (11); The operating mechanism (3) includes a transparent tube (31) fixedly installed on the top of the support base (11). The bottom of the transparent tube (31) is connected to the air blowing head (15). A magnet (37) is slidably installed inside the transparent tube (31). A limiting plate (32) is fixedly installed on the periphery of the transparent tube (31). A copper wire coil (33) is wound between the limiting plates (32). An LED light (35) corresponding to the copper wire coil (33) is fixedly installed at the front end of the limiting plate (32). The magnetic field display mechanism (2) includes a magnetic field display plate (21) inserted into the top of the support base (11), and the interior of the magnetic field display plate (21) is filled with an oil-iron mixture liquid (23).

2. The teaching aid for demonstrating electromagnetic induction phenomena according to claim 1, characterized in that, An air pump (17) is fixedly installed inside the support base (11), and the air outlet of the air pump (17) is connected to the air blowing head (15).

3. The teaching aid for demonstrating electromagnetic induction phenomena according to claim 2, characterized in that, An air inlet (13) is provided on one side of the support base (11), and the air inlet (13) corresponds to the air inlet end of the air pump (17).

4. The teaching aid for demonstrating electromagnetic induction phenomena according to claim 1, characterized in that, The top of the blowing head (15) is provided with an air outlet (16), and the top of the transparent tube (31) is provided with a ventilation hole (36).

5. The teaching aid for demonstrating electromagnetic induction phenomena according to claim 1, characterized in that, The top of the support base (11) is fixedly installed with a slot base (14), and the bottom of the magnetic field display panel (21) is inserted into the slot base (14).

6. The teaching aid for demonstrating electromagnetic induction phenomena according to claim 1, characterized in that, The magnetic field display panel (21) is made of transparent material. The magnetic field display panel (21) has an internal cavity (22) for filling the oil-iron-shaving mixture (23). The oil-iron-shaving mixture (23) is made by mixing iron filings with oil.

7. The teaching aid for demonstrating electromagnetic induction phenomena according to claim 1, characterized in that, The bottom of the support base (11) is fixedly installed with anti-slip feet (12), and the limiting plate (32) and the LED light (35) are fixedly connected by a fixing bracket (34).

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