CN203812466U - Electromagnetic swing display apparatus - Google Patents

Abstract

The utility model provides an electromagnetic swing display device. The electromagnetic swing display device includes: a box body, a power supply, a coil and a first magnetic part. The power supply, the coil and the first magnetic part are all arranged inside the box body. The power supply and the coil form a In the energized circuit, the first magnetic part is arranged within the range of the magnetic field generated by the coil, and the two poles of the first magnetic part are arranged along the vertical direction; the bracket, the bracket is fixedly arranged above the box body; the swing, the top of the swing is rotatably connected to the On the bracket, the swing is provided with a second magnetic piece, the second magnetic piece is arranged within the range of the magnetic field generated by the coil, wherein, when the coil is not powered, the two poles of the second magnetic piece are arranged in the vertical direction, and are connected to the first The magnetic parts are oppositely arranged, and the opposite ends of the first magnetic part and the second magnetic part have the same polarity. The utility model effectively solves the problem of poor display effect in the prior art.

Description

Electromagnetic swing display device

technical field

The utility model relates to the technical field of teaching demonstration, in particular to an electromagnetic swing display device.

Background technique

At present, for the teaching of electricity and magnetism, it is generally only explained through the knowledge in books, and there is no corresponding real object for demonstration. In this way, it is difficult for people who study electricity and magnetism to understand scientific principles such as "the electrified coil can generate magnetism", "the electrified coil also has NS poles" and "changing the positive and negative poles of the battery can change the NS poles of the electrified coil". Stimulate interest in learning. In the existing design, there is no special device to teach and demonstrate the above-mentioned scientific principles, and the display effect is not good only through pictures.

Utility model content

The utility model aims to provide an electromagnetic swing display device to solve the problem of poor display effect in the prior art.

In order to achieve the above object, the utility model provides an electromagnetic swing display device, comprising: a box body, a power supply, a coil and a first magnetic piece, the power supply, the coil and the first magnetic piece are all arranged inside the box body, the power supply and the coil A energization circuit is formed, the first magnetic part is arranged within the range of the magnetic field generated by the coil, and the two poles of the first magnetic part are arranged along the vertical direction; the bracket, the bracket is fixedly arranged above the box body; the swing, the top of the swing is rotatably connected On the bracket, the swing is provided with a second magnetic piece, the second magnetic piece is arranged within the range of the magnetic field generated by the coil, wherein, when the coil is not powered, the two poles of the second magnetic piece are arranged in a vertical direction, and are aligned with the first magnetic piece. A magnetic part is arranged oppositely, and the opposite ends of the first magnetic part and the second magnetic part have the same polarity.

Further, the electromagnetic swing display device also includes a dust cover, and the dust cover is arranged on the outside of the bracket and the swing.

Further, the box includes a box body and a box door, and the box door is connected to the box body in an openable and closable manner.

Furthermore, the electromagnetic swing display device also includes a button and a controller, the button is arranged on the box and located on one side of the bracket, the button is electrically connected to the controller, and the controller is electrically connected to the energizing loop so that the energizing loop generates alternating current.

Further, there are two brackets, the two brackets are arranged oppositely, the swing is connected between the two brackets, the first end of the bracket is fixed on the box, and the second end of the bracket is connected to the swing.

Further, the second ends of the two brackets are provided with rotating shafts, and the swing is connected to the rotating shafts.

Further, the swing includes two connecting rods and a seat board connecting the two connecting rods, the two connecting rods are respectively connected to the two rotating shafts, and the second magnetic part is arranged on the side of the seat board facing the box.

Further, the second magnetic piece is connected to the side of the seat plate facing the box through the connecting piece.

Further, the electromagnetic swing display device also includes a simulated object, which is arranged on the seat board.

Further, both the first magnetic part and the second magnetic part are electromagnets.

Applying the technical solution of the utility model, the electromagnetic swing display device includes a box body, a power supply, a coil, a first magnetic part, a bracket, a swing and a second magnetic part. When the coil is not energized, the swing is stationary in the initial position. When the power supply is connected to the energizing circuit, the coil generates a magnetic field, and under the action of the magnetic field, the first magnetic part and the second magnetic part generate magnetism. Since the two poles of the first magnetic part and the second magnetic part are arranged in the vertical direction when the coil is not energized, and the first magnetic part and the second magnetic part are arranged oppositely, the two opposite sides of the first magnetic part and the second magnetic part terminal polarity is the same. Due to the principle that like poles repel each other, the above arrangement makes the first magnetic part and the second magnetic part repel each other, so that the swing provided with the second magnetic part rotates, and then the swing is pushed up. When the power is cut off, the swing falls to the initial position under the action of gravity and inertia. When changing the direction of the current that energizes the loop, the swing is pushed in the other direction. Utilizing the principle of magnetic field generated by energized coils, the swing swings continuously on the support. In this way, the knowledge in the book is displayed in the form of interactive display of the above-mentioned electromagnetic display device, and the display effect is better, so that the participants can understand the popular science knowledge of electric power more intuitively.

Description of drawings

The accompanying drawings constituting a part of this application are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute improper limitations to the utility model. In the attached picture:

Fig. 1 shows the schematic front view of an embodiment of an electromagnetic swing according to the present invention;

Figure 2 shows a schematic side view of the electromagnetic swing of Figure 1; and

Fig. 3 shows a schematic top view of the electromagnetic swing in Fig. 1 .

The above-mentioned drawings include the following reference numerals:

10. Box body; 11. Box body; 12. Box door; 13. Foot; 20. Bracket; 30. Swing; 31. Connecting rod; 32. Seat board; 40. Second magnetic part; ; 60, connectors; 70, simulated objects; 80, fixed pieces.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

As shown in Figure 1, the electromagnetic swing display device of this embodiment includes a box body 10, a power supply, a coil, a first magnetic part, a bracket 20, a swing 30 and a second magnetic part 40, and the power supply, the coil and the first magnetic part are all provided Inside the box body 10, the power supply and the coil form a energizing circuit, the first magnetic part is arranged within the range of the magnetic field generated by the coil, the two poles of the first magnetic part are arranged along the vertical direction, and the bracket 20 is fixedly arranged above the box body 10 , the top of the swing 30 is rotatably connected to the bracket 20, the swing 30 is provided with a second magnetic member 40, and the second magnetic member 40 is arranged within the range of the magnetic field generated by the coil, wherein, when the coil is not energized, the second The two poles of the magnetic piece 40 are vertically arranged and opposite to the first magnetic piece, and opposite ends of the first magnetic piece and the second magnetic piece 40 have the same polarity.

Applying the electromagnetic swing display device of this embodiment, the electromagnetic swing display device includes a box body 10 , a power supply, a coil, a first magnetic member, a bracket 20 , a swing 30 and a second magnetic member 40 . When the coil is not energized, the swing 30 is stationary in the initial position. When the power supply is connected to the energizing circuit, the coil generates a magnetic field, and under the action of the magnetic field, the first magnetic member and the second magnetic member 40 generate magnetism. Since the two poles of the first magnetic part and the second magnetic part 40 are arranged vertically when the coil is not energized, and the first magnetic part and the second magnetic part 40 are arranged oppositely, the first magnetic part and the second magnetic part 40 The opposite ends have the same polarity. Due to the principle that like poles repel each other, the above arrangement makes the first magnetic part and the second magnetic part 40 repel each other, so that the swing 30 provided with the second magnetic part 40 rotates, and then the swing 30 is pushed up. When the power is cut off, the swing 30 falls to the initial position under the effect of gravity and inertia. When changing the direction of the current energizing the loop, the swing 30 is pushed in the other direction. Utilizes the principle of the magnetic field generated by the energized coil, so that the swing 30 swings continuously on the support 20 . In this way, the knowledge in the book is displayed in the form of interactive display of the above-mentioned electromagnetic display device, and the display effect is better, so that the participants can understand the popular science knowledge of electric power more intuitively.

In this embodiment, the electromagnetic swing display device further includes a dustproof cover 50 , and the dustproof cover 50 is arranged on the outside of the bracket 20 and the swing 30 . When the electromagnetic swing display device needs to be displayed for a long time, dust may fall on the swing 30 and the support 20, and the dust cover 50 can effectively prevent dust from falling on the swing 30 and the support 20, ensuring the aesthetics of the electromagnetic swing display device . Preferably, the material of the dust cover 50 is acrylic. Of course, the material of the dust cover 50 is not limited thereto.

As shown in Figure 1, in order to install the power supply, the coil and the first magnetic part inside the box body 10 for convenience, in this embodiment, the box body 10 includes a box body 11 and a box door 12, and the box door 12 can be opened and closed The ground is connected to the box body 11. The box door 12 can easily maintain the electromagnetic swing display device. The box body 10 also includes a leg 13 connected to the bottom of the box body 11 . The supporting feet 13 can play the role of supporting the box body, and the supporting feet 13 can also facilitate the moving of the box body.

In this embodiment, the electromagnetic swing display device also includes a button and a controller. The button is arranged on the box body 10 and is located on one side of the bracket 20. The button is electrically connected to the controller, and the controller is electrically connected to the energization circuit to make the energization circuit generate an alternating current. The start button is used to control the swing and the size of the swing of the swing 30 by the controller. Preferably, the buttons are arranged on the outside of the dust cover 50 .

In this embodiment, the electromagnetic swing display device further includes a sensor, and the sensor is electrically connected to the controller. The sensor can detect the position of the swing 30, and can intermittently stop power supply to the energized circuit. When the power supply is stopped, no matter how big the swing is when the power is turned on, the time for the swing 30 to swing back and forth is basically constant. In this way, the principle of period invariance of simple pendulum can be observed.

In this embodiment, there are two brackets 20, and the two brackets 20 are arranged oppositely. The swing 30 is connected between the two brackets 20. The first end of the bracket 20 is fixed on the box body 10, and the second end of the bracket 20 is connected to Swing 30. As shown in FIG. 3 , the electromagnetic swing display device further includes a fixing piece 80 on which the bracket 20 is fixed, and the fixing piece 80 is fixed on the box body 11 . This prevents movement of the bracket 20 . Of course, the fixing piece 80 and the bracket 20 can be integrated.

In this embodiment, the second ends of the two brackets 20 are connected together through a rotating shaft, that is, there is only one rotating shaft, and the swing 30 is connected to the rotating shaft. The swing 30 includes two connecting rods 31 and a seat 32 connecting the two connecting rods 31 , the two connecting rods 31 are connected on the rotating shaft, and the second magnetic part 40 is arranged on the side of the seat 32 facing the box body 10 . Preferably, the material of the swing 30 can be stainless steel, aluminum alloy or steel. Certainly, the material of the swing 30 is not limited thereto. In an embodiment not shown in the figure, the second ends of the two brackets are provided with rotating shafts, that is, there are two rotating shafts, and the swing is connected to the rotating shafts. The two connecting rods are respectively connected to the two rotating shafts.

As shown in FIG. 2 , in order to fix the second magnetic piece 40 on the seat plate 32 conveniently, in this embodiment, the second magnetic piece 40 is connected to the side of the seat plate 32 facing the box body 10 through a connecting piece 60 . Preferably, both the first magnetic member and the second magnetic member 40 are electromagnets. In this embodiment, the electromagnetic swing display device further includes a simulated object 70 , and the simulated object 70 is arranged on the seat board 32 . Preferably, the simulated object 70 is a human body model.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. An electromagnetic swing display device, characterized in that it comprises: A box (10), a power supply, a coil and a first magnetic part, the power supply, the coil and the first magnetic part are all arranged inside the box (10), and the power supply and the coil form a An energization circuit, the first magnetic member is arranged within the range of the magnetic field generated by the coil, and the two poles of the first magnetic member are arranged along the vertical direction; a bracket (20), the bracket (20) is fixedly arranged above the box body (10); A swing (30), the top of the swing (30) is rotatably connected to the support (20), the swing (30) is provided with a second magnetic piece (40), and the second magnetic piece ( 40) set within the range of the magnetic field generated by the coil, Wherein, when the coil is not energized, the two poles of the second magnetic member (40) are arranged in the vertical direction, and are arranged opposite to the first magnetic member, and the first magnetic member and the second magnetic member The opposite ends of the parts (40) have the same polarity. 2. The electromagnetic swing display device according to claim 1, further comprising a dustproof cover (50), and the dustproof cover (50) is arranged on the support (20) and the swing (30) ) outside. 3. The electromagnetic swing display device according to claim 1, characterized in that, the box (10) comprises a box body (11) and a box door (12), and the box door (12) can be opened and closed Connected to the box body (11). 4. The electromagnetic swing display device according to claim 1, further comprising a button and a controller, the button being arranged on the box (10) and on one side of the bracket (20), The button is electrically connected to the controller, and the controller is electrically connected to the energizing loop to make the energizing loop generate alternating current. 5. The electromagnetic swing display device according to claim 1, characterized in that there are two supports (20), the two supports (20) are arranged oppositely, and the swing (30) is connected between the two supports (20). Between the brackets (20), the first end of the bracket (20) is fixed on the box (10), and the second end of the bracket (20) is connected to the swing (30). 6. The electromagnetic swing display device according to claim 5, characterized in that, the second ends of the two supports (20) are provided with rotating shafts, and the swing (30) is connected to the rotating shafts. 7. The electromagnetic swing display device according to claim 6, characterized in that, the swing (30) comprises two connecting rods (31) and a seat plate (32) connecting the two connecting rods (31), two The connecting rods (31) are respectively connected to the two rotating shafts, and the second magnetic member (40) is arranged on the side of the seat plate (32) facing the box body (10). 8. The electromagnetic swing display device according to claim 7, characterized in that, the second magnetic member (40) is connected to the seat (32) facing the box (10) through a connecting member (60). ) on the side. 9. The electromagnetic swing display device according to claim 7, further comprising a simulated object (70), the simulated object (70) being arranged on the seat board (32). 10. The electromagnetic swing display device according to claim 1, characterized in that, both the first magnetic member and the second magnetic member (40) are electromagnets.