CN212782406U - Lenz law teaching demonstration device - Google Patents
Lenz law teaching demonstration device Download PDFInfo
- Publication number
- CN212782406U CN212782406U CN202021602228.5U CN202021602228U CN212782406U CN 212782406 U CN212782406 U CN 212782406U CN 202021602228 U CN202021602228 U CN 202021602228U CN 212782406 U CN212782406 U CN 212782406U
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- China
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- back plate
- lenz
- verification coil
- demonstration device
- rail assembly
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Abstract
The utility model provides a Lenz law teaching demonstration device, which is provided with a roller, a back plate, a verification coil, a luminous piece, a magnetic piece and a slide rail component; the back plate is connected with the sliding rail assembly in a sliding manner through the roller; the verification coil and the light-emitting piece are respectively arranged on the back plate; the verification coil is connected with the light-emitting piece through a lead to form a closed loop; the magnetic part is used for moving in the verification coil, so that the verification coil generates induced current to drive the luminous backboard of the luminous part to slide on the sliding rail assembly, the Lenz law can be verified visually, and the magnetic part is simple in structure and convenient to use.
Description
Technical Field
The utility model relates to a teaching equipment technical field, in particular to lenz law teaching presentation device.
Background
Lenz's law is a law of electromagnetism that can be used to judge the direction of electromotive force generated by electromagnetic induction. In lenz's law, the induced current has a direction such that the magnetic field of the induced current always blocks the change in the magnetic flux causing the induced current. Lenz's law can also be expressed as: the effect of the induced current is always counter to the cause of the induced current. In the teaching of electron and electrician, often need teach lenz's law to the student, it is not too audio-visual, and the structure of traditional teaching aid is comparatively complicated moreover, uses inconveniently.
Therefore, a lenz law teaching demonstration device is needed, which can verify lenz law more intuitively, and has simple structure and convenient use.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In order to solve the above-mentioned problem of prior art, the utility model provides a lenz law teaching presentation device can comparatively audio-visually verify lenz law and simple structure, convenient to use.
(II) technical scheme
In order to achieve the above object, the utility model discloses a main technical scheme include:
a Lenz law teaching demonstration device comprises a roller, a back plate, a verification coil, a light-emitting piece, a magnetic piece and a slide rail assembly;
the back plate is connected with the sliding rail assembly in a sliding manner through the roller;
the verification coil and the light-emitting piece are respectively arranged on the back plate;
the verification coil is connected with the light-emitting piece through a lead to form a closed loop;
the magnetic part is used for moving in the verification coil, so that the verification coil generates induction current to drive the luminous part to emit light, and meanwhile, the back plate slides on the sliding rail assembly.
Further, the slide rail assembly comprises an upper baffle, a support column and a lower baffle;
the upper baffle is connected with the lower baffle through the supporting columns;
the back plate is arranged between the upper baffle plate and the lower baffle plate.
Furthermore, the upper baffle and the lower baffle are respectively provided with a groove, and the grooves are matched with the rollers.
Furthermore, the two ends of the back plate are respectively provided with the idler wheels.
Further, the device also comprises a supporting plate;
the lower baffle is arranged on the supporting plate and fixedly connected with the supporting plate.
(III) advantageous effects
The beneficial effects of the utility model reside in that: by arranging the roller, the back plate, the verification coil, the light-emitting piece, the magnetic piece and the sliding rail component; the back plate is connected with the sliding rail assembly in a sliding manner through the roller; the verification coil and the light-emitting piece are respectively arranged on the back plate; the verification coil is connected with the light-emitting piece through a lead to form a closed loop; the magnetic part is used for moving in the verification coil, so that the verification coil generates induced current to drive the luminous backboard of the luminous part to slide on the sliding rail assembly, the Lenz law can be verified visually, and the magnetic part is simple in structure and convenient to use.
Drawings
Fig. 1 is a schematic view of the overall structure of a lenz law teaching demonstration device according to an embodiment of the present invention;
fig. 2 is the utility model discloses lenz's law teaching presentation device's side view.
[ description of reference ]
1: a roller; 2: a back plate; 3: a magnetic member; 4: a verification coil; 5: a wire; 6: a support plate; 7: a light emitting member; 8: an upper baffle plate; 9: a lower baffle plate; 10: a groove; 11: and (4) a support column.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.
Referring to fig. 1 to 2, a lenz's law teaching demonstration device includes a roller 1, a back plate 2, a verification coil 4, a light emitting member 7, a magnetic member 3 and a slide rail assembly;
the back plate 2 is connected with the sliding rail assembly in a sliding way through the roller 1;
the verification coil 4 and the luminous piece 7 are respectively arranged on the back plate 2;
the verification coil 4 is connected with the luminous piece 7 through a lead 5 to form a closed loop;
the magnetic member 3 is configured to move in the verification coil 4, so that the verification coil 4 generates an induced current to drive the light emitting member 7 to emit light while the back plate 2 slides on the sliding rail assembly.
Specifically, the magnetic member 3 is specifically a magnet, and the light emitting member 7 is a small bulb;
the sliding rail assembly comprises an upper baffle plate 8, a supporting column 11 and a lower baffle plate 9;
the upper baffle plate 8 is connected with the lower baffle plate 9 through the supporting columns 11;
the back plate 2 is disposed between the upper baffle plate 8 and the lower baffle plate 9.
Specifically, the supporting column 11 is used for supporting the upper baffle plate 8 and fixing the upper baffle plate 8 on the lower baffle plate 9;
the upper baffle plate 8 and the lower baffle plate 9 are respectively provided with a groove 10, and the grooves 10 are matched with the rollers 1.
The two ends of the back plate 2 are respectively provided with the idler wheels 1.
Also comprises a supporting plate 6;
the lower baffle 9 is arranged on the supporting plate 6 and is fixedly connected with the supporting plate 6.
The working principle of the utility model is as follows:
during demonstration, only the magnetic part 3 needs to be held by hand, so that the magnetic part 3 moves in the verification coil 4, and the change of the original magnetic field is always hindered by the induction magnetic field known from Lenz's law. If the original magnetic field is increased, the direction of the induction magnetic field is opposite to the original magnetic field direction so as to prevent the increase of the original magnetic field; on the contrary, the original magnetic field is reduced, and the direction of the induced magnetic field is the same as the original magnetic field, so that when the magnetic member 3 approaches the verification coil 4, the induced magnetic field will hinder the increase of the magnetic field of the magnetic member 3, specifically, the magnetic member 3 and the verification coil 4 are mutually exclusive, the verification coil 4 is far away from the magnetic member 3, and the back plate 2 moves rightwards under the action of the roller 1 and the sliding rail assembly; when the magnetic element 3 is far away from the verification coil 4, the induced magnetic field is to hinder the reduction of the magnetic field of the magnetic element 3, which is specifically shown in that the verification coil 4 and the magnetic element 3 have a tendency of attraction, and the back plate 2 moves leftwards under the action of the roller 1 and the sliding rail assembly; in addition, the small bulb can emit light by the induced current generated when the magnetic member 3 cuts the magnetic lines of force in the verification coil 4, and the small bulb does not emit light when the magnetic member 3 and the verification coil 4 are kept relatively static.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (5)
1. A Lenz law teaching demonstration device is characterized by comprising a roller, a back plate, a verification coil, a light-emitting piece, a magnetic piece and a slide rail assembly;
the back plate is connected with the sliding rail assembly in a sliding manner through the roller;
the verification coil and the light-emitting piece are respectively arranged on the back plate;
the verification coil is connected with the light-emitting piece through a lead to form a closed loop;
the magnetic part is used for moving in the verification coil, so that the verification coil generates induction current to drive the luminous part to emit light, and meanwhile, the back plate slides on the sliding rail assembly.
2. The Lenz's law teaching demonstration device according to claim 1, wherein the slide rail assembly comprises an upper baffle, a support column and a lower baffle;
the upper baffle is connected with the lower baffle through the supporting columns;
the back plate is arranged between the upper baffle plate and the lower baffle plate.
3. The Lenz law teaching demonstration device according to claim 2, wherein grooves are formed in the upper baffle and the lower baffle respectively and are matched with the rollers.
4. The Lenz's law teaching demonstration device according to claim 1, wherein the rollers are respectively arranged at two ends of the back plate.
5. The Lenz's law teaching demonstration device according to claim 2, further comprising a support plate;
the lower baffle is arranged on the supporting plate and fixedly connected with the supporting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021602228.5U CN212782406U (en) | 2020-08-05 | 2020-08-05 | Lenz law teaching demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021602228.5U CN212782406U (en) | 2020-08-05 | 2020-08-05 | Lenz law teaching demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212782406U true CN212782406U (en) | 2021-03-23 |
Family
ID=75040728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021602228.5U Active CN212782406U (en) | 2020-08-05 | 2020-08-05 | Lenz law teaching demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212782406U (en) |
-
2020
- 2020-08-05 CN CN202021602228.5U patent/CN212782406U/en active Active
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