Electromagnetic experiment simulation display teaching aid

Abstract

The utility model discloses an electromagnetism experiment simulation demonstration teaching aid, which comprises a fixing plate, an iron core and a battery box, the iron core is arranged on the inner side of the fixing plate, an enameled wire is wound on the outer side of the iron core, the wound enameled wire forms a coil on the outer side of the iron core, the inner side of one end of the fixing plate is spirally connected with a first locking screw, and the inner side of the other end of the fixing plate is spirally connected with a second locking screw. An insulating mechanism is arranged at one end of the iron core, winding mechanisms are arranged on the two sides of the iron core, the enameled wires located on the two sides of the iron core are wound around the outer sides of the adjacent winding mechanisms, and batteries are placed on the inner side of the battery box. The winding wheel is used for winding the enameled wire on the outer side of the iron core or the plastic core, the number of turns of the coil is changed, winding of the enameled wire can be rapidly achieved under the action of the winding wheel, operation is easy, a user can use the winding device conveniently, the phenomenon that the wound enameled wire is scattered under the action of the winding wheel is avoided, and the winding device is convenient to use. The next use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic experiment simulation display, in particular to an electromagnetic experiment simulation display teaching aid. Background Art

[0002] The phenomenon of electromagnetic induction refers to the fact that a conductor placed in a changing magnetic flux will generate an electromotive force. This electromotive force is called induced electromotive force or induced electromotive force. If the conductor is closed into a loop, the electromotive force will drive the flow of electrons to form an induced current. Electromagnetic induction refers to the phenomenon of induced electromotive force due to changes in magnetic flux. The discovery of the electromagnetic induction phenomenon is one of the greatest achievements in the field of electromagnetism, marking the arrival of a major industrial and technological revolution. Facts have proved that the wide application of electromagnetic induction in electrical engineering, electronic technology, electrification, and automation has played an important role in promoting the development of social productivity and science and technology.

[0003] When conducting a simulation demonstration of magnetoelectricity, tools such as a battery box, a battery, an enameled wire, and an iron core are needed. In physics, the factors that affect the magnetism of an electromagnet are related to the number of turns of the coil, the presence or absence of an iron core, etc. When it is necessary to show students the influence of different factors on magnetism, it is necessary to change the number of turns and remove the iron core from the inside of the coil. The two ends of the enameled wire of the existing commonly used display aids are fixed to the conductor, which is not convenient for adjusting the number of turns of the coil. Moreover, when the iron core is taken out, the coil cannot be supported, and the coil is in a loose state, which is not convenient for maintaining the shape of the coil, and is easy to cause the coil to scatter, affecting the next use. Therefore, an electromagnetic experiment simulation display teaching aid is proposed to address the above problems. Utility Model Content

[0004] The technical problem to be solved by the utility model overcomes the existing defects and can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The electromagnetic experiment simulation display teaching aid comprises a fixed plate, an iron core and a battery box, wherein an iron core is arranged on the inner side of the fixed plate, an enameled wire is wound on the outer side of the iron core, and the wound enameled wire forms a coil on the outer side of the iron core, a first locking screw is spirally connected to the inner side of one end of the fixed plate, an insulating mechanism is arranged at one end of the iron core, winding mechanisms are arranged on both sides of the iron core, and the enameled wires located on both sides of the iron core are wound on the outer sides of adjacent winding mechanisms, a battery is placed on the inner side of the battery box, and both ends of the battery box are connected to both ends of the enameled wire.

[0007] Preferably, the winding mechanism includes a rotating shaft rotatably connected to a fixed plate, a take-up wheel is fixedly connected to the outer side of the rotating shaft, and the enameled wire is wound around the outer side of the take-up wheel, a fixed rod is sleeved on the outer side of one end of the rotating shaft, a limiting ring is fixedly connected to one end of the fixed rod, and the limiting ring is sleeved on the outer side of the iron core.

[0008] Preferably, there are two fixing rods, which are symmetrically distributed on both sides of the vertical center line of the limiting ring. A second locking screw is spirally connected to the inner side of one end of the fixing rod, and the second locking screw is in contact with the rotating shaft.

[0009] Preferably, the insulating mechanism comprises a threaded column fixedly connected to the iron core, the outer side of the threaded column is spirally connected to a plastic core, and the other end of the plastic core is fixedly connected to a baffle.

[0010] Preferably, a threaded hole is formed on the inner side of one end of the plastic core, and the threaded column is spirally connected to the plastic core through the threaded hole.

[0011] Preferably, the diameter of the plastic core is equal to the diameter of the iron core.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The electromagnetic experiment simulation display teaching aids, through the set fixed plate, rotating shaft, take-up wheel, second locking screw, fixed rod, and limit ring, when the number of turns of the coil needs to be changed, the enameled wire on the outside of the iron core or plastic core is wound through the take-up wheel to change the number of turns of the coil. The enameled wire can be quickly wound under the action of the take-up wheel. The operation is simple and convenient for users to use. Under the action of the take-up wheel, the enameled wire will not be scattered after winding, which is convenient for next use.

[0014] 2. Electromagnetic experiment simulation display teaching aids, through the set iron core, threaded column, plastic core, threaded hole, baffle, when there is no iron core inside the coil, the plastic core and the iron core are moved inside the coil, the iron core is moved out from the inside of the coil, and the plastic core is put into the inside of the coil. The coil is supported by the plastic core, which can not only show the size of the magnetic force when there is an iron core inside the coil, but also ensure that the state of the coil will not change, and at the same time ensure that the coil will not be scattered, which is convenient for the next adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] Figure 1 The utility model is a schematic diagram of the overall structure of the electromagnetic experiment simulation display teaching aid.

[0017] Figure 2 The utility model is a schematic diagram of the installation structure of the rotating shaft of the electromagnetic experiment simulation display teaching aid.

[0018] Figure 3 The utility model is a schematic diagram of the installation structure of the plastic core of the electromagnetic experiment simulation display teaching aid when it is used.

[0019] Figure 4 The utility model is a schematic diagram of the installation structure of the threaded column of the electromagnetic experiment simulation display teaching aid.

[0020] In the figure: 1. battery box; 2. battery; 3. enameled wire; 4. iron core; 5. threaded column; 6. plastic core; 7. threaded hole; 8. baffle; 9. first locking screw; 10. fixing plate; 11. rotating shaft; 12. take-up wheel; 13. second locking screw; 14. fixing rod; 15. limiting ring. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with specific implementation methods, wherein the accompanying drawings are only used for exemplary descriptions and represent only schematic diagrams rather than actual drawings, and cannot be understood as limitations on this patent. In order to better illustrate the specific implementation methods of the utility model, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted. Based on the specific implementation methods in the utility model, all other specific implementation methods obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] Example

[0023] like Figure 1-4As shown, the electromagnetic experiment simulation display teaching aid includes a fixed plate 10, an iron core 4, a plastic core 6, and a battery box 1. The iron core 4 is arranged on the inner side of the fixed plate 10, and the outer side of the iron core 4 is wound with an enameled wire 3, and the wound enameled wire 3 forms a coil on the outer side of the iron core 4. A first locking screw 9 is spirally connected to the inner side of one end of the fixed plate 10, an insulating mechanism is arranged at one end of the iron core 4, and winding mechanisms are arranged on both sides of the iron core 4, and the enameled wire 3 located on both sides of the iron core 4 is wound on the outer side of the adjacent winding mechanisms. A battery 2 is placed on the inner side of the battery box 1, and both ends of the battery box 1 are connected to the two ends of the enameled wire 3. The iron core 4 can rotate and slide on the inner side of the fixed plate 10, so that the number of turns of the coil on the outer side of the iron core 4 is easy to adjust.

[0024] As a further improvement of the utility model, Figure 1 , Figure 2 and Figure 3 As shown, the winding mechanism includes a rotating shaft 11 rotatably connected to a fixed plate 10, a take-up wheel 12 is fixedly connected to the outer side of the rotating shaft 11, and the enameled wire 3 is wound around the outer side of the take-up wheel 12, and a fixing rod 14 is sleeved on the outer side of one end of the rotating shaft 11, and one end of the fixing rod 14 is fixedly connected to a limiting ring 15, and the limiting ring 15 is sleeved on the outer side of the iron core 4. When the number of turns of the coil needs to be changed, the enameled wire 3 on the outer side of the iron core 4 or the plastic core 6 is wound by the take-up wheel 12 to change the number of turns of the coil. Under the action of the take-up wheel 12, the enameled wire 3 can be quickly wound up, the operation is simple, and it is convenient for users to use. Under the action of the take-up wheel 12, the enameled wire 3 will not be scattered after winding, which is convenient for next use.

[0025] As a further improvement of the utility model, Figure 1 , Figure 2 and Figure 3 As shown, there are two fixing rods 14, and they are symmetrically distributed on both sides of the vertical center line of the limiting ring 15. A second locking screw 13 is spirally connected to the inner side of one end of the fixing rod 14, and the second locking screw 13 is in contact with the rotating shaft 11. The second locking screw 13 can be used to limit and fix the rotating shaft 11, ensuring that the take-up wheel 12 will not rotate arbitrarily, thereby ensuring that the enameled wire 3 on the outside of the take-up wheel 12 will not be scattered, and the first locking screw 9 can be used to limit and fix the plastic core 6 or the iron core 4 to prevent the coil from rotating arbitrarily.

[0026] As a further improvement of the utility model, Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the insulating mechanism includes a threaded column 5 fixedly connected to the iron core 4, the outer side of the threaded column 5 is spirally connected to a plastic core 6, the other end of the plastic core 6 is fixedly connected to a baffle 8, the plastic core 6 can rotate on the inner side of the fixed plate 10, and can slide on the inner side of the fixed plate 10. When it is necessary to make the inner side of the coil without the iron core 4, the plastic core 6 and the iron core 4 are moved on the inner side of the coil, the iron core 4 is moved out from the inner side of the coil, and the plastic core 6 is entered into the inner side of the coil. The coil is supported by the plastic core 6, which can not only show the size of the magnetic force when there is an iron core 4 inside the coil, but also ensure that the state of the coil will not change, and at the same time ensure that the coil will not be scattered, which is convenient for the next adjustment.

[0027] As a further improvement of the utility model, Figure 4 As shown, a threaded hole 7 is formed on the inner side of one end of the plastic core 6 , and the threaded column 5 is spirally connected to the plastic core 6 through the threaded hole 7 , so as to facilitate the installation and disassembly between the plastic core 6 and the iron core 4 .

[0028] As a further improvement of the utility model, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the diameter of the plastic core 6 is equal to the diameter of the iron core 4, ensuring that the plastic core 6 can achieve normal support for the coil.

[0029] Workflow: When students need to understand the effect of changing the number of coil turns on the electromagnet, the example of reducing the number of coil turns is used for explanation. When the number of coil turns needs to be reduced, first separate the first locking screw 9 from the iron core 4 or the plastic core 6, and separate the second locking screw 13 from the rotating shaft 11. Then the user rotates the take-up wheel 12 through the rotating shaft 11 to make the take-up wheel 12 reel the enameled wire 3 outside the iron core 4 or the plastic core 6, thereby changing the number of coil turns. When reeling, the iron core 4 or the plastic core 6 will also move along with the enameled wire 3. The wire 3 rotates together. After the winding is completed, the iron core 4 or the plastic core 6 is limited and fixed by the first locking screw 9 again, and the second locking screw 13 is used to limit and fix the rotating shaft 11 again. Then, the two ends of the enameled wire 3 are respectively connected to the positive and negative poles of the battery box 1, so that the coil is energized to generate magnetism, and then the magnetic force can be tested. If the number of turns of the coil needs to be increased, the iron core 4 or the plastic core 6 is rotated to make the iron core 4 or the plastic core 6 realize the winding of the enameled wire 3, thereby increasing the number of turns of the coil;

[0030] When it is necessary to remove the iron core 4 from the inner side of the coil, the first locking screw 9 is separated from the iron core 4, and then the user pushes the iron core 4 gradually out from the inner side of the coil through the baffle 8 and the plastic core 6, and the plastic core 6 will gradually enter the inner side of the coil, so that the plastic core 6 can support the coil, and then the user rotates the iron core 4, so that the iron core 4 moves out from the inner side of the plastic core 6 with the threaded column 5, thereby separating the plastic core 6 from the iron core 4, ensuring that the iron core 4 will not affect the test of the magnetic force.

[0031] The above is a preferred implementation mode of the utility model. The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. Technical personnel in this industry should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the utility model. Without departing from the protection scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model to be protected. The protection scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. An electromagnetic experiment simulation demonstration teaching aid, comprising a fixing plate (10), an iron core (4), and a battery box (1), characterized in that: An iron core (4) is arranged on the inner side of the fixing plate (10), an enameled wire (3) is wound around the outer side of the iron core (4), and the wound enameled wire (3) forms a coil on the outer side of the iron core (4); a first locking screw (9) is spirally connected to the inner side of one end of the fixing plate (10); an insulating mechanism is arranged on one end of the iron core (4); winding mechanisms are arranged on both sides of the iron core (4), and the enameled wire (3) located on both sides of the iron core (4) is wound around the outer side of adjacent winding mechanisms; a battery (2) is placed on the inner side of the battery box (1), and both ends of the battery box (1) are connected to both ends of the enameled wire (3).

2. The electromagnetic experiment simulation display teaching aid according to claim 1, characterized in that: The winding mechanism comprises a rotating shaft (11) rotatably connected to a fixed plate (10); a take-up wheel (12) is fixedly connected to the outer side of the rotating shaft (11), and the enameled wire (3) is wound around the outer side of the take-up wheel (12); a fixing rod (14) is sleeved on the outer side of one end of the rotating shaft (11); one end of the fixing rod (14) is fixedly connected to a limiting ring (15), and the limiting ring (15) is sleeved on the outer side of the iron core (4).

3. The electromagnetic experiment simulation display teaching aid according to claim 2, characterized in that: There are two fixing rods (14) symmetrically distributed on both sides of the vertical center line of the limiting ring (15); a second locking screw (13) is spirally connected to the inner side of one end of the fixing rod (14), and the second locking screw (13) is in contact with the rotating shaft (11).

4. The electromagnetic experiment simulation display teaching aid according to claim 1, characterized in that: The insulating mechanism comprises a threaded column (5) fixedly connected to the iron core (4); the outer side of the threaded column (5) is spirally connected to a plastic core (6); and the other end of the plastic core (6) is fixedly connected to a baffle (8).

5. The electromagnetic experiment simulation display teaching aid according to claim 4, characterized in that: A threaded hole (7) is provided on the inner side of one end of the plastic core (6), and the threaded column (5) is spirally connected to the plastic core (6) through the threaded hole (7).

6. The electromagnetic experiment simulation display teaching aid according to claim 4, characterized in that: The diameter of the plastic core (6) is equal to the diameter of the iron core (4).

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