Physical electromagnetic induction teaching demonstration device

Abstract

The utility model relates to the technical field of teaching equipment, and discloses a physical electromagnetic induction teaching demonstration device, which comprises a bottom plate and a coil assembly fixedly arranged at the upper end of the bottom plate, and can slide along the inner wall of a connecting block by moving a sliding block before electromagnetic induction demonstration. When sliding, the movable contact is driven to be close to the static contact on the other side, when the movable contact and the static contact are attached together, the power source assembly adjacent to the bulb is connected with the bulb through a wire, the bulb and the power source assembly are powered on at the moment, and whether the bulb is normal or not can be judged by observing whether the bulb is turned on or not. When the physical electromagnetic induction teaching demonstration device is used, the bulb can be conveniently detected, whether the bulb is damaged or not can be quickly judged, and the bulb can be used for normal experiment.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching equipment, in particular to a physical electromagnetic induction teaching demonstration device. 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 electromagnetic induction teaching demonstrations, the power is often turned on and off instantly to replace the circuit connection. Therefore, the light bulb used in the experiment is easily damaged under this state. Whether the light bulb can be lit normally and whether the brightness can be changed is the most intuitive phenomenon in the experimental teaching. Therefore, testing the quality of the light bulb is a relatively important part of the experimental process. General teaching demonstration devices cannot quickly detect the quality of the light bulb, which will delay a certain amount of time in actual teaching.

[0004] Therefore, we proposed a physical electromagnetic induction teaching demonstration device to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a physical electromagnetic induction teaching demonstration device to solve the problem raised in the above background technology that when conducting electromagnetic induction teaching demonstration, the power is often turned on and off instantly to replace the connection of the circuit. Therefore, in this state, the light bulb used in the experiment is easily damaged. Whether the light bulb can be lit normally and whether the brightness can be changed is the most intuitive phenomenon in the experimental teaching. Therefore, checking the quality of the light bulb is a relatively important link in the experimental process. The general teaching demonstration device cannot quickly detect the quality of the light bulb, which will delay a certain amount of time in the actual teaching.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A physical electromagnetic induction teaching demonstration device, including a bottom plate and a coil assembly fixedly installed at the upper end of the bottom plate. Power supply assemblies are fixedly provided on both sides of the upper end of the bottom plate. A lamp holder is fixedly installed at the upper end of the bottom plate. A light bulb is screwed onto the lamp holder. Adjusting assemblies are provided on both sides of the lamp holder. The adjusting assembly includes connecting blocks fixedly installed on both sides of the lamp holder. Sliders are slidably installed inside the connecting blocks. Fixed contacts are fixedly installed between the inner walls on both sides of the connecting blocks. Moving contacts are fixedly installed on both side walls of the sliders;

[0007] The upper ends of the connecting blocks are equidistantly provided with clamping grooves. Chutes are opened inside the sliders. Clamping blocks are slidably installed in the chutes;

[0008] A spring is fixedly installed between the side wall of the clamping block and the inner wall of the chute. The clamping block is slidably connected in the clamping groove;

[0009] A first connecting rod is slidably connected inside the connecting block. The first connecting rod is fixedly connected to the slider. A second connecting rod is fixedly installed between the two first connecting rods;

[0010] Connecting grooves are opened on the side walls of the connecting blocks. Connecting heads are fixedly installed on the side walls of the sliders. The connecting heads are slidably connected in the connecting grooves;

[0011] Junction points are fixedly installed on both outer walls of the connecting blocks. The junction points are electrically connected to the adjacent fixed contacts. The junction points are electrically connected to the light bulb.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] 1. Before the electromagnetic induction demonstration, the slider can be moved to slide along the inner wall of the connecting block. When sliding, the moving contact is driven to approach the fixed contact on the other side. When the moving contact and the fixed contact are in contact with each other, the power supply assembly adjacent to the light bulb is connected to the light bulb through a wire. At this time, the power supply between the light bulb and the power supply assembly is turned on. It can be judged whether the light bulb is normal by observing whether the light bulb lights up. If the light bulb lights up, it indicates that the light bulb is normal. The battery in the power supply assembly can be installed inside the power supply assembly on the other side for teaching demonstration. When this physical electromagnetic induction teaching demonstration device is in use, it is convenient to detect the light bulb and can quickly judge whether it is damaged, which can be used for the normal progress of the experiment.

[0014] 2. With the cooperation of the connecting block, card slot, connecting groove, slider, sliding groove, clamping block, spring, connecting head, moving contact, static contact, contact point, connecting rod 1 and connecting rod 2, when the device is in use, there is no need to frequently replace the wiring. By pushing the connecting rod 2, the position of the slider can be adjusted to conduct electromagnetic teaching or detect the bulb, and it can be automatically limited when moving to the appropriate position to prevent disconnection caused by accidental touch. Description of the Drawings

[0015] Figure 1 It is a schematic three-dimensional structure diagram of the whole of the present utility model;

[0016] Figure 2 It is a schematic three-dimensional structure diagram of the bulb system of the present utility model;

[0017] Figure 3 It is a schematic cross-sectional three-dimensional structure diagram of the adjustment component system of the present utility model;

[0018] Figure 4 For the present utility model Figure 3 The enlarged schematic three-dimensional structure diagram at A in the figure.

[0019] In the figure: 1. Base plate; 2. Coil assembly; 3. Power supply assembly; 4. Lamp holder; 5. Bulb; 6. Adjustment component; 61. Connecting block; 611. Card slot; 612. Connecting groove; 62. Slider; 621. Sliding groove; 622. Clamping block; 623. Spring; 63. Connecting head; 64. Moving contact; 65. Static contact; 66. Contact point; 67. Connecting rod 1; 68. Connecting rod 2. Detailed Embodiment

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Embodiment 1: Please refer to Figure 1 - Figure 3 , a physical electromagnetic induction teaching demonstration device, including a base plate 1 and a coil assembly 2 fixedly installed at the upper end of the base plate 1. Power supply assemblies 3 are fixedly arranged on both sides of the upper end of the base plate 1. A lamp holder 4 is fixedly installed at the upper end of the base plate 1. A bulb 5 is threadedly installed on the lamp holder 4. Adjustment components 6 are arranged on both sides of the lamp holder 4. The adjustment component 6 includes connecting blocks 61 fixedly installed on both sides of the lamp holder 4. Sliders 62 are slidably installed inside the connecting blocks 61. Static contacts 65 are fixedly installed between the inner walls on both sides of the connecting block 61. Moving contacts 64 are fixedly installed on both side walls of the slider 62.

[0022] In this embodiment: When conducting electromagnetic induction teaching demonstrations, since the power is often instantaneously turned on and off, the light bulb 5 is prone to damage under such working conditions. Before conducting the electromagnetic induction demonstration, the slider 62 can be first moved to slide along the inner wall of the connecting block 61. When sliding, the moving contact 64 is driven to approach the static contact 65 on the other side. When the moving contact 64 and the static contact 65 are in contact with each other, the power supply component 3 adjacent to the light bulb 5 is connected to the light bulb 5 through a wire. At this time, the power supply is connected between the light bulb 5 and the power supply component 3. It can be judged whether the light bulb 5 is normal by observing whether the light bulb 5 lights up. If the light bulb 5 lights up, it indicates that the light bulb 5 is normal. The battery in the power supply component 3 can be installed inside the power supply component 3 on the other side for teaching demonstrations. When this physical electromagnetic induction teaching demonstration device is used, it is convenient to detect the light bulb 5 and can quickly judge whether it is damaged, which can be used for the normal progress of the experiment.

[0023] Embodiment Two: This embodiment is an improvement made on the basis of Embodiment 1. Specifically, please refer to Figure 2 - Figure 4 , card slots 611 are equidistantly opened at the upper end of the connecting block 61, sliding grooves 621 are opened inside the sliders 62, and clamping blocks 622 are slidably installed in the sliding grooves 621.

[0024] A spring 623 is fixedly installed between the side wall of the clamping block 622 and the inner wall of the sliding groove 621. The clamping block 622 is slidably connected in the card slot 611. Through the cooperation between the clamping block 622 and the card slot 611, the slider 62 can be automatically limited and fixed when it moves to a specified position.

[0025] A first connecting rod 67 is slidably connected in the connecting block 61. The first connecting rod 67 is fixedly connected to the slider 62. A second connecting rod 68 is fixedly installed between the two first connecting rods 67. By pulling the second connecting rod 68, the positions of the sliders 62 on both sides can be adjusted simultaneously.

[0026] Connecting grooves 612 are opened on the side walls of the connecting block 61. Connecting heads 63 are fixedly installed on the side walls of the sliders 62. The connecting heads 63 are slidably connected in the connecting grooves 612. The connecting heads 63 are used for electrically connecting between the coil assembly 2 or the power supply component 3.

[0027] Contact points 66 are fixedly installed on the outer walls on both sides of the connecting block 61. The contact points 66 are electrically connected to the adjacent static contacts 65. The contact points 66 are electrically connected to the light bulb 5. The contact points 66, the light bulb 5 and the static contacts 65 are in an on state, and the light bulb will be lit when there is current passing through.

[0028] In this embodiment: When using the device, in the initial state, the slider 62 is located at the lower end of the middle card slot 611. At this time, both sides of the bulb 5 are in a disconnected state. When it is necessary to check the quality of the bulb 5, the clamping block 622 can be pushed into the sliding groove 621. After the clamping block 622 is pushed into the sliding groove 621, the connecting rod two 68 can be pulled or pushed to adjust the position of the slider 62. When the slider 62 is driven to move until the moving contact 64 fits and connects with the static contact 65 on the side, the clamping block 622 will be automatically pushed outwards by the spring 623 and slide into the card slot 611 for limiting. At this time, electromagnetic induction teaching can be carried out or the quality of the bulb 5 can be detected. When using this device, there is no need to frequently change the wiring. By pushing the connecting rod two 68, the position of the slider 62 can be adjusted to carry out electromagnetic teaching or detect the bulb 5, and it can be automatically limited when moving to a suitable position to prevent disconnection caused by accidental touch.

[0029] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A physical electromagnetic induction teaching demonstration device, comprising a base plate (1) and a coil assembly (2) fixedly mounted on the upper end of the base plate (1), power supply assemblies (3) fixedly arranged on both sides of the upper end of the base plate (1), characterized in that: A lamp holder (4) is fixedly mounted on the upper end of the base plate (1), a light bulb (5) is threadedly mounted on the lamp holder (4), adjustment components (6) are arranged on both sides of the lamp holder (4), the adjustment components (6) include connecting blocks (61) fixedly mounted on both sides of the lamp holder (4), sliders (62) are slidably mounted inside the connecting blocks (61), static contacts (65) are fixedly mounted between the inner walls of both sides of the connecting blocks (61), and moving contacts (64) are fixedly mounted on the side walls of both sides of the slider (62); The upper end of the connecting block (61) is provided with slots (611) at equal intervals, the interior of each of the sliding blocks (62) is provided with a slide slot (621), and each of the slide slots (621) is provided with a slot block (622) slidably mounted therein; A spring (623) is fixedly installed between the side wall of the clamping block (622) and the inner wall of the sliding groove (621), and the clamping block (622) is slidably connected in the clamping groove (611); A connecting rod 1 (67) is slidably connected inside the connecting block (61), the connecting rod 1 (67) is fixedly connected to the sliding block (62), and a connecting rod 2 (68) is fixedly installed between the two connecting rods 1 (67); The side walls of the connection blocks (61) are each provided with a connection groove (612), and the side walls of the sliding blocks (62) are each fixedly mounted with a connection head (63), and the connection head (63) is slidably connected in the connection groove (612); Contacts (66) are fixedly mounted on the outer walls of both sides of the connection block (61); the contact (66) is electrically connected to the adjacent static contact (65); and the contact (66) is electrically connected to the light bulb (5).

Images