Physical electromagnetic teaching aid

Abstract

The utility model provides a physical electromagnetic teaching aid, which comprises a frame body, a transparent plate, a battery fixing seat and two moving assemblies, wherein one side of the frame body is provided with an opening; the transparent plate is arranged at the opening of the frame body; the battery fixing seat is arranged on the inner side of the frame body and is used for clamping a storage battery; the contact piece of one moving assembly is pulled to move in the direction away from the storage battery, the contact piece moves in cooperation with the transmission assembly to drive the rotating shaft to rotate, the rotating shaft drives the rotating seat to rotate, the rotating seat drives the clamping piece to rotate, and the clamping piece drives the storage battery to rotate, so that the storage battery rotates by 180 degrees; at the moment, the positions of the two electrodes of the storage battery are exchanged, meanwhile, the contact piece of one moving assembly moves in the direction away from the storage battery, the contact piece of the other moving assembly is driven by the transmission assembly to move in the direction away from the storage battery, therefore, exchange of the two electrodes of the storage battery is completed, and the effect of convenient operation is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of physics teaching aids, and in particular to a physics electromagnetic teaching aid. Background Technology

[0002] Electromagnetism, a concept in physics, is a general term for the electrical and magnetic properties exhibited by matter, such as electromagnetic induction and electromagnetic waves. Electromagnetic phenomena are caused by the movement of electric charges, which generates waves and forms a magnetic field. Therefore, all electromagnetic phenomena are inseparable from magnetic fields.

[0003] In teaching electromagnetism in physics, specialized teaching aids are used to make learning more intuitive for students. Existing teaching aids usually consist of batteries, circuits, and magnetic needles. By changing the positive and negative terminals of the battery, the magnetic needle rotates in different directions. However, when changing the positive and negative terminals of the battery, the existing teaching aids require removing the battery from the clamp that holds it, then repositioning the battery and reinstalling it on the clamp. This makes the operation very inconvenient and affects the teaching experience. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a physical electromagnetic teaching tool.

[0005] This utility model provides the following technical solution: a physical electromagnetic teaching aid, comprising a frame with an opening on one side, a transparent plate disposed at the opening of the frame, a battery holder disposed inside the frame for holding a storage battery, two movable components disposed on both sides of the battery holder, a circuit component for allowing current to flow through the storage battery, and a magnetic needle rotatably connected to the base, the magnetic needle being disposed close to the circuit component, and the two ends of the circuit component being respectively connected to the two movable components; the physical electromagnetic teaching aid further includes a transmission component disposed between the two movable components and the battery holder; the battery holder includes a rotating shaft rotatably connected to the frame, a rotating seat disposed on the rotating shaft, and a clamping member disposed on the rotating seat for holding the storage battery; the movable components include a slide rail disposed on the frame, and a contact member slidably connected to the slide rail; the contact members of the two movable components respectively contact and engage with the two electrodes of the storage battery.

[0006] Furthermore, a base is provided on the bottom side of the frame, and the length and width of the lower part of the base are greater than the length and width of the frame.

[0007] Furthermore, a cover plate is provided at the opening of the frame. The cover plate is located on the front side of the battery holder. The cover plate is detachably connected to the frame. The cover plate cooperates with the transparent plate to close the opening of the frame.

[0008] Furthermore, the clamping member of the battery holder consists of two elastic clamping pieces, which are symmetrically arranged on the rotating base. A space for clamping the battery is formed between the middle of the two clamping pieces, and an opening for the battery to enter the space is formed between the ends of the two clamping pieces away from the rotating base.

[0009] Furthermore, the transmission assembly includes a one-way gear disposed on the rotating shaft, and two racks disposed on the contact members of the two moving assemblies respectively, the two racks meshing with the opposite sides of the one-way gear respectively.

[0010] Furthermore, one end of the contact of one of the transmission components is exposed outside the frame.

[0011] Furthermore, the transmission assembly also includes a spring disposed between the slide rail and the contact member.

[0012] Furthermore, the circuit assembly includes a first wire, a switch assembly, and a second wire. One end of the first wire is electrically connected to a contact of one of the moving components, and the other end is electrically connected to one end of the second wire via the switch assembly. The other end of the second wire is electrically connected to a contact of the other moving component.

[0013] Furthermore, the switch assembly includes two conductive elements, one of which is slidably connected to the frame and has one end extending through the side wall of the frame and connected to a friction block.

[0014] Furthermore, the circuit assembly also includes a light bulb and two brackets. The light bulb is connected in series with the second wire, and both brackets are disposed on the frame. The second wire passes through the two brackets in sequence. The two brackets are used to straighten a portion of the second wire, and the magnetic needle is located at the straightened portion of the second wire.

[0015] The beneficial effects of this utility model are as follows: by pulling the contact of one of the moving components away from the battery, the movement of the contact, in conjunction with the transmission component, drives the rotating shaft to rotate. The rotating shaft drives the rotating seat to rotate, the rotating seat drives the clamping component to rotate, and the clamping component drives the battery to rotate, thereby rotating the battery 180 degrees. At this time, the positions of the two electrodes of the battery will be swapped. At the same time, the contact of one of the moving components moves away from the battery, and through the transmission component, it drives the contact of the other moving component to also move away from the battery, thus completing the swapping of the two electrodes of the battery and achieving the effect of convenient operation. Attached Figure Description

[0016] Figure 1This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the frame of this utility model.

[0018] Figure 3 This is a three-dimensional structural diagram of the battery holder and the moving component of this utility model.

[0019] Figure 4 This is a three-dimensional structural diagram of the rack and pinion meshing with the one-way gear of this utility model.

[0020] Figure 5 This is a three-dimensional structural diagram of the circuit component of this utility model.

[0021] Figure 6 This is a three-dimensional structural diagram of the first and second conductive components of this utility model.

[0022] The labels in the attached diagram are as follows: 1-base, 2-frame, 3-transparent plate, 4-cover plate, 5-battery holder, 51-rotating seat, 52-rotating shaft, 53-clamping piece, 54-battery, 6-moving component, 61-slide rail, 62-contact element, 63-spring, 64-rack, 65-one-way gear, 7-circuit component, 71-first wire, 72-first conductive element, 73-second conductive element, 74-second wire, 75-bracket, 76-friction block, 77-light bulb, 8-magnetic needle. Detailed Implementation

[0023] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0024] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] A physical electromagnetic teaching aid, such as Figures 1-4 As shown, the device includes a frame 2 with an opening on one side, a transparent plate 3 at the opening of the frame 2, a battery holder 5 for holding a battery 54 inside the frame 2, two movable components 6 on each side of the battery holder 5, a circuit component 7 for allowing current to flow through the battery 54, and a magnetic needle 8 rotatably connected to the base 1. The magnetic needle 8 is positioned close to the circuit component 7, and the two ends of the circuit component 7 are respectively connected to the two movable components 6. The physical electromagnetic teaching aid also includes a transmission component between the two movable components 6 and the battery holder 5. The battery holder 5 includes a rotating shaft 52 rotatably connected to the frame 2, a rotating seat 51 on the rotating shaft 52, and a clamping member for holding the battery 54 on the rotating seat 51. The movable component 6 includes a slide rail 61 on the frame 2 and a contact member 62 slidably connected to the slide rail 61. The contact members 62 of the two movable components 6 respectively contact and engage with the two electrodes of the battery 54.

[0027] Understandably, when the operator needs to use this teaching aid, firstly, the battery 54 is installed on the battery holder 5 and clamped by the clamping device. Next, the contact pieces 62 of the two moving components 6 are operated to make them contact the two electrodes of the battery 54 respectively. Then, the circuit component 7 is operated to make the circuit in the circuit component 7 conductive. At this time, current flows through the circuit component 7, generating a magnetic field, and the magnetic needle 8 will rotate. When the operator needs to change the position of the battery 54, that is, to change the electrodes, the operator can pull one of the contact pieces 62 of the moving component 6 to move it away from the battery 54. This movement of the contact piece 62, through the transmission component, drives the rotating shaft 52 to rotate. The rotating shaft 52 drives the rotating seat 51 to rotate, the rotating seat 51 drives the clamping device to rotate, and the clamping device drives the battery 54 to rotate, thus rotating the battery 54 180 degrees. At this time, the positions of the two electrodes of the battery 54 will be swapped. Simultaneously, the contact piece 62 of one of the moving components 6... Contact 62 moves away from battery 54, and through the transmission assembly, it drives the contact 62 of another moving assembly 6 to also move away from battery 54. After the positions of the two electrodes of battery 54 are reversed, the operator can push the contact 62 of one of the moving assemblies 6 to move closer to battery 54. At this time, through the transmission assembly, the rotating shaft 52 will not rotate, while the contact 62 of the other moving assembly 6 will move closer to battery 54, so that the two contacts 62 contact the two electrodes of battery 54 respectively. Then the operator continues to turn on the circuit in the circuit assembly 7, and the current flows through the circuit assembly 7. The magnetic needle 8 rotates in the opposite direction, so that students can see the change in the rotation of the magnetic needle 8 through the transparent plate 3, which allows students to see the change in the magnetic field in the circuit more intuitively. The part of contact 62 that contacts battery 54 is the conductive part. Through the contact 62 contacting the electrodes of battery 54, the circuit assembly 7 is connected to battery 54.

[0028] A base 1 is provided on the bottom side of the frame 2, and the length and width of the lower part of the base 1 are greater than the length and width of the frame 2.

[0029] It is understandable that by setting the base 1, the frame 2 can be placed more stably on the fixed platform, preventing the frame 2 from tipping over, and the bottom side of the base 1 is made of non-slip material, further preventing the frame 2 from moving.

[0030] A cover plate 4 is also provided at the opening of the frame 2. The cover plate 4 is located on the front side of the battery mounting base 5. The cover plate 4 is detachably connected to the frame 2. The cover plate 4 cooperates with the transparent plate 3 to close the opening of the frame 2.

[0031] It is understandable that when the battery 54 is depleted, the operator can remove the cover plate 4 to unload the material, then remove the battery 54 from the clamp and replace it with a new battery 54.

[0032] The clamping member of the battery holder 5 consists of two elastic clamping pieces 53. The two clamping pieces 53 are symmetrically arranged on the rotating base 51. A space for clamping the battery 54 is formed between the middle parts of the two clamping pieces 53. An opening for the battery 54 to enter the space is formed between the ends of the two clamping pieces 53 away from the rotating base 51.

[0033] It is understandable that the operator inserts the battery 54 directly into the space formed between the two clips 53 through the opening between the two clips 53, thereby clamping the battery 54 between the two clips 53 and completing the installation of the battery 54.

[0034] like Figures 3-4 As shown, the transmission assembly includes a one-way gear 65 disposed on the rotating shaft 52, and two racks 64 disposed on the contact members 62 of the two moving components 6 respectively, the two racks 64 meshing with the opposite sides of the one-way gear 65; one end of the contact member 62 of one of the transmission assemblies passes through the outside of the frame 2 and is exposed.

[0035] It is understandable that when the operator pushes a portion of the contact 62 exposed in the frame 2 away from the battery 54, the movement of the contact 62 will cause the rack 64 on it to move as well. When the rack 64 moves, it will drive the outer ring of the one-way gear 65 to rotate, and the outer ring will drive the inner ring of the one-way gear 65 to rotate, thereby driving the rotating shaft 52 to rotate. The rotation of the rotating shaft 52 will drive the rotating seat 51 to rotate, thus causing the battery 54 to rotate 180 degrees, realizing the swapping of the two electrodes. When the one-way gear 65 rotates, it will drive the rack 64 on the other contact 62 to move, thereby causing the other contact 62 to move away from the battery 54, thus preventing the contact 62 from blocking the rotation of the battery 54. After the battery 54 is rotated 180 degrees, the operator can push the contact 62 towards the battery 54. The movement of the rack 64 on the contact 62 will drive the outer ring of the one-way gear 65 to rotate, while the inner ring remains stationary. The one-way gear 65 is existing technology and will not be described in detail here. The stationary inner ring of the one-way gear 65 will not drive the shaft 52 to rotate, and the battery 54 will be in a disabled state. That is to say, the inner ring of the one-way gear 65 is fixedly connected to the shaft 52. The rotation of the outer ring of the one-way gear 65 will drive the rack 64 on another contact 62 to move towards the battery 54, thereby moving the contact 62 towards the battery 54, so that the two contacts make contact with the two electrodes of the battery, achieving conductivity.

[0036] The transmission assembly also includes a spring 63 disposed between the slide rail 61 and the contact member 62.

[0037] It is understandable that when the contact 62 is pushed to move away from the battery 54, the spring 63 is compressed. When the contact 62 is released, the spring 63 returns to its original position. The return of the spring 63 will cause the contact 62 to move automatically towards the battery 54.

[0038] like Figures 5-6 As shown, the circuit assembly 7 includes a first wire 71, a switch assembly, and a second wire 74. One end of the first wire 71 is electrically connected to the contact 62 of one of the moving components 6, and the other end is electrically connected to one end of the second wire 74 through the switch assembly. The other end of the second wire 74 is electrically connected to the contact 62 of the other moving component 6. The switch assembly includes two conductive elements, one of which is slidably connected to the frame 2 and has one end extending through the side wall of the frame 2 and connected to a friction block 76. The circuit assembly 7 also includes a light bulb 77 and two brackets 75. The light bulb 77 is connected in series with the second wire 74. Both brackets 75 are disposed on the frame 2. The second wire 74 passes through the two brackets 75 in sequence. The two brackets 75 are used to straighten a portion of the second wire 74. The magnetic needle 8 is located at the straightened portion of the second wire 74.

[0039] It is understandable that when both contact points 62 are in contact with the battery 54, the battery 54 will discharge, and the current will flow into the first conductor 71 and the second conductor 74. A magnetic field is generated on the first conductor 71 and the second conductor 74, and the magnetic needle 8 will rotate due to the magnetic force. Two conductive parts are used to connect the first conductor 71 and the second conductor 74. The two conductive parts are the first conductive part 72 and the second conductive part 73. The second conductive part 73 is slidably connected to the frame 2, and one end extends out of the frame 2 and is connected to a friction block 76. By pushing the friction block 76 to move, the second conductive part 73 is moved, thereby connecting the second conductive part 73 with the first conductive part 72. This connects the first conductor 71 and the second conductor 74. When the current flows through the bulb 77, the bulb 77 will light up. By the light of the bulb 77, it can be determined whether the battery 54 still has power. The two brackets 75 straighten a part of the second conductor 74 to avoid the magnetic field from becoming chaotic, thereby making the rotation of the magnetic needle 8 orderly.

[0040] In summary, by pulling the contact 62 of one of the moving components 6 away from the battery 54, the movement of the contact 62, in conjunction with the transmission component, drives the rotating shaft 52 to rotate. The rotating shaft 52 drives the rotating seat 51 to rotate, the rotating seat 51 drives the clamping component to rotate, and the clamping component drives the battery 54 to rotate, thereby rotating the battery 54 by 180 degrees. At this time, the positions of the two electrodes of the battery 54 will be swapped. Simultaneously, the contact 62 of one of the moving components 6 moves away from the battery 54, and through the transmission component, it drives the contact 62 of the other moving component 6 to also move away from the battery 54. This completes the swapping of the two electrodes of the battery 54, achieving the effect of convenient operation.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A physical electromagnetic teaching aid, characterized in that, The physical electromagnetic teaching aid comprises a frame with an open side, a transparent plate arranged at the opening of the frame, a battery fixing seat arranged inside the frame for clamping a storage battery, two moving assemblies respectively arranged at both sides of the battery fixing seat, a circuit assembly for allowing current of the storage battery to flow, and a magnetic needle rotatably connected to the frame and arranged close to the circuit assembly, two ends of the circuit assembly being connected to the two moving assemblies respectively; the physical electromagnetic teaching aid further comprises a transmission assembly arranged between the two moving assemblies and the battery fixing seat; the battery fixing seat comprises a rotating shaft rotatably connected to the frame, a rotating seat arranged on the rotating shaft, and a clamping piece arranged on the rotating seat for clamping the storage battery; the moving assembly comprises a sliding rail arranged on the frame and a contact piece slidably connected to the sliding rail; the contact pieces of the two moving assemblies are in contact with two electrodes of the storage battery respectively.

2. The physical electromagnetic teaching aid of claim 1, wherein, The bottom side of the frame is provided with a base, the length and width of the lower part of the base are greater than those of the frame.

3. The physical electromagnetic teaching aid of claim 1, wherein, A cover plate is further arranged at the opening of the frame, the cover plate is located at the front side of the battery fixing seat, the cover plate is detachably connected to the frame, and the cover plate and the transparent plate cooperate to close the opening of the frame.

4. The physical electromagnetic teaching aid of claim 1, wherein, The clamping piece of the battery fixing seat is composed of two elastic clamping pieces, the two clamping pieces are symmetrically arranged on the rotating seat, a space for clamping the storage battery is formed between the middle parts of the two clamping pieces, and an opening for the storage battery to enter the space is formed between the end parts of the two clamping pieces away from the rotating seat.

5. The physical electromagnetic teaching aid of claim 1, wherein, The transmission assembly comprises a one-way gear arranged on the rotating shaft and two racks arranged on the contact pieces of the two moving assemblies respectively, the two racks are engaged with the two opposite sides of the one-way gear respectively.

6. The physical electromagnetic teaching aid of claim 5, wherein, One end of the contact piece of one of the transmission assemblies penetrates through the outer part of the frame and is exposed outside.

7. The physical electromagnetic teaching aid of claim 6, wherein, The transmission assembly further comprises a spring arranged between the sliding rail and the contact piece.

8. The physical electromagnetic teaching aid of claim 1, wherein, The circuit assembly comprises a first wire, a switch assembly and a second wire, one end of the first wire is electrically connected to the contact piece of one of the moving assemblies, the other end of the first wire is electrically connected to one end of the second wire through the switch assembly, and the other end of the second wire is electrically connected to the contact piece of the other moving assembly.

9. The physical electromagnetic teaching aid of claim 8, wherein, The switch assembly comprises two conductive pieces, one of the conductive pieces is slidably connected to the frame and has a friction block connected to one end penetrating through the side wall of the frame.

10. The physical electromagnetic teaching aid of claim 9, wherein, The circuit assembly further comprises a bulb and two supports, the bulb is connected in series to the second wire, the two supports are arranged on the frame in sequence, the second wire penetrates through the two supports in sequence, the two supports are used for straightening a part of the second wire, and the magnetic needle is located at the straightened part of the second wire.

Images