Device for visually displaying magnetic line of force of magnet

Abstract

The utility model provides a device for visually displaying the magnetic line of force of a magnet, which relates to the technical field of magnetic line of force display, and specifically comprises a transparent shell, magnetic current liquid and a light bar arranged on the side surface of the shell, the shell is formed by attaching two plates, the inner side of each plate is sunken to form a cavity, the magnetic current liquid is smeared in the cavity, and the light bar is arranged on the side surface of the shell. And the light bar illuminates the magnetic flow liquid towards the cavity. The magnetic particles of the magnetic flow liquid are attached to the interior of the cavity of the plate due to adsorption, precipitation and movement cannot occur, the magnetic flow liquid cannot move along with the magnetic flow liquid even if the magnetic particles are influenced by an external magnet, and the free magnetic particles can only be connected under the action of a magnetic field. And the annular wave-shaped magnetic lines of force between the two poles of the magnet can be seen through 360-degree annular irradiation of the lamp strips on the periphery. The device is simple in structure, low in failure rate and low in maintenance cost, can be used for testing at any angle state, is sensitive in response, and can instantly display the change track of magnetic lines.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic force line display, in particular to a device for visually displaying the magnetic force lines of a magnet. Background Art

[0002] In the field of education and scientific research, the intuitive display of magnetic lines of force is of great significance for understanding the distribution and characteristics of magnetic fields. In the prior art, the methods for displaying magnetic lines of force are mostly theoretical models or computer simulations, which lack intuitiveness and interactivity. In addition, some physical magnetic line of force demonstration tools have problems such as discontinuous magnetic lines of force and complex structures. Therefore, a device for intuitively displaying the magnetic lines of force of a magnet is proposed to solve the above problems. Utility Model Content

[0003] In view of this, the utility model provides a device for intuitively displaying the magnetic lines of force of a magnet, aiming to solve the problems of incoherent magnetic line display and complex structure of the existing magnetic line demonstration tools in the background technology.

[0004] The embodiment of the utility model provides a device for intuitively displaying the magnetic lines of force of a magnet, including a transparent shell, a magnetic fluid, and a light bar installed on the side of the shell, wherein the shell is formed by bonding two plates, the inner side of the plates is recessed to form a cavity, the magnetic fluid is applied in the cavity, and the light bar faces the cavity and illuminates the magnetic fluid. In this technical solution, the magnetic particles of the magnetic fluid are adsorbed and bonded in the cavity of the plate, and will not precipitate or move. Even if affected by an external magnet, the magnetic fluid will not move with it. The free magnetic particles can only be connected under the action of a magnetic field. The wavy magnetic lines of force between the two poles of the magnet can be seen through the 360-degree annular illumination of the light bars around.

[0005] Further describing the above scheme, the height of the cavity is 20-30 nanometers, and the diameter of the magnetic particles in the magnetic fluid is 8-12 nanometers.

[0006] Furthermore, a reinforcing plate is provided on the peripheral side of the shell.

[0007] Optionally, a battery, a circuit board connected to the light bar, and a switch are installed in the shell. The switch and the battery are electrically connected to the circuit board. The switch is installed in the lower right corner of the front side of the shell. When displaying, the light bar is turned on by the switch to adjust the brightness and color of the light.

[0008] Optionally, a detachable columnar supporting foot is installed at the bottom of the shell, and the shell is provided with a storage hole for storing the disassembled supporting foot. When it needs to be placed, the supporting foot can be taken out and installed at the bottom of the shell. When it needs to be stored, the supporting foot can be inserted back into the shell.

[0009] More preferably, the shell surface is provided with a groove for placing the magnet, and the magnet for demonstration is installed in the groove.

[0010] In some embodiments, a long cylindrical coil is installed on the side of the cavity, and the coil is electrically connected to the circuit board. When the coil is energized, the coil generates a magnetic field to change the state of the magnetic fluid in the cavity.

[0011] In other schemes, a coil wrapping the magnetic fluid in the cavity is provided on the ring side of the cavity, and the coil is electrically connected to the circuit board. When the coil is energized, the coil generates a magnetic field to change the state of the magnetic fluid in the cavity.

[0012] More preferably, the circuit board is connected to a regulating switch for controlling the current size and direction of the coil, so as to adjust the current size and direction of the coil, thereby changing the magnetic field and improving the demonstration effect.

[0013] Compared with the prior art, the utility model has a simple structure, low failure rate and low maintenance cost; it is easy to move, miniaturized and can be carried around, has a wide range of application scenarios and intuitive effects; it can be tested at any angle, has a sensitive response, and can instantly display the trajectory of magnetic line changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 , 2 3 is an overall schematic diagram provided by Example 1 of the utility model;

[0016] Figure 4 An explosion diagram provided for Example 1 of the utility model;

[0017] Figure 5 This is an overall schematic diagram provided for Embodiment 2 of the present utility model;

[0018] Figure 6 An explosion diagram provided for Example 2 of the utility model;

[0019] Figure 7 A schematic diagram provided for Example 2 of the utility model;

[0020] Figure 8 Another overall schematic diagram provided for Embodiment 2 of the present utility model;

[0021] Fig. 9 A schematic diagram provided for Example 2 of the utility model;

[0022] Fig.10A demonstration effect diagram provided for an embodiment of the utility model.

[0023] Among them, the reference numerals in the figure are:

[0024] 1. Shell; 11. Cavity; 12. Reinforcement plate; 13. Switch; 14. Groove; 15. Support foot; 16. Storage hole; 17. Coil; 2. Magnetic fluid; 3. Light bar; 4. Magnet.

[0025] The above drawings have shown clear embodiments of the present invention, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present invention in any way, but to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0026] 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 part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centered element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method. The terms "upper end", "lower end", "left side", "right side", "front end", "rear end" and similar expressions used herein are positional relationships with reference to the accompanying drawings.

[0028] In order to make the technical solutions and advantages of the present invention more clear, the implementation modes of the present invention will be described in further detail below with reference to the accompanying drawings.

[0029] Example 1

[0030] See also Figure 1-4As shown, this embodiment provides a device for intuitively displaying the magnetic lines of force of a magnet, including a transparent shell 1, a magnetic fluid 2, and a light bar 3 installed on the side of the shell 1. The shell 1 is formed by bonding two plates together. The inner side of the plate is recessed to form a cavity 11. The magnetic fluid 2 is applied in the cavity 11. The light bar 3 faces the cavity 11 and illuminates the magnetic fluid 2. The height of the cavity 11 is 20-30 nanometers, the diameter of the magnetic particles in the magnetic fluid 2 is 8-12 nanometers, and a reinforced reinforcement plate 12 is provided on the side of the shell 1. In actual use, the magnetic particles of the magnetic fluid 2 are adsorbed and attached to the cavity 11 of the plate, and will not precipitate or move. Even if affected by the external magnet 4, the magnetic fluid 2 will not move with it. The free magnetic particles can only be connected under the action of the magnetic field. The circular wavy magnetic lines of force between the two poles of the magnet 4 can be seen through the 360-degree annular illumination of the light bar 3 around it, as shown in FIG. Fig.10 As shown. Figure 1-4 As shown, the housing 1 can be made into a circle, a square, a polygon, etc.

[0031] Example 2

[0032] As shown in Figures 5-9, this embodiment removes the reinforcement plate 12 based on the embodiment 1, and adds a battery, a circuit board connected to the light bar 3, and a switch 13 in the housing 1. The switch 13 and the battery are electrically connected to the circuit board. The switch 13 is installed in the lower right corner of the front of the housing 1. When displaying, the light bar 3 is turned on by the switch 13 to adjust the light brightness and color. Figure 7 As shown, a detachable columnar support foot 15 is installed at the bottom of the housing 1, and the housing 1 is provided with a storage hole 16 for storing the detached support foot 15. When it is needed to be placed, the support foot 15 can be taken out and installed at the bottom of the housing 1. When it is needed to be stored, the support foot 15 can be inserted back into the housing 1. Figure 6 As shown, the surface of the housing 1 is provided with a groove 14 for placing the magnet 4, and the magnet 4 for demonstration is installed in the groove 14. Figure 8 As shown, the ring side of the cavity 11 is provided with a coil 17 that wraps the magnetic fluid 2 in the cavity 11. The coil 17 is electrically connected to the circuit board. When the coil 17 is energized, the coil 17 generates a magnetic field to change the state of the magnetic fluid 2 in the cavity 11. In other embodiments, the coil 17 is changed to a long cylindrical shape, such as Fig. 9 The circuit board is connected with a regulating switch for controlling the current size and direction of the coil 17, so as to adjust the current size and direction of the coil 17, thereby changing the magnetic field and improving the demonstration effect.

[0033] In actual use, the light bar 3 is powered on to illuminate the cavity 11, and the magnet 4 can be taken out and moved in the cavity 11, or the coil 17 can be powered on to generate a magnetic field, so that the magnetic particles in the magnetic fluid 2 can show the magnetic field state. By changing the direction and size of the current in the coil 17, the magnetic field will change immediately, and the magnetic particles can instantly show the trajectory of the change of the magnetic lines of force.

[0034] After considering the specification and practicing the utility model, those skilled in the art will easily think of other embodiments of the utility model. This application is intended to cover any variation, use or adaptation of the utility model, which follows the general principles of the utility model and includes common knowledge or customary technical means in the art that are not disclosed in the utility model. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the utility model are indicated by the following claims.

[0035] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A device for visually displaying the magnetic lines of force of a magnet, characterized in that: The invention comprises a transparent shell (1), a magnetic fluid (2), and a light bar (3) mounted on the side of the shell (1); the shell (1) is formed by laminating two plates; the inner side of the plates is recessed to form a cavity (11); the magnetic fluid (2) is applied in the cavity (11); and the light bar (3) faces the cavity (11) to illuminate the magnetic fluid (2).

2. A device for intuitively displaying magnetic lines of force of a magnet according to claim 1, characterized in that: The height of the cavity (11) is 20-30 nanometers, and the diameter of the magnetic particles in the magnetic fluid (2) is 8-12 nanometers.

3. The device for intuitively displaying magnetic lines of force of a magnet according to claim 1, characterized in that: A reinforcing plate (12) is provided on the peripheral side of the shell (1).

4. The device for intuitively displaying magnetic lines of force of a magnet according to claim 1, characterized in that: A battery, a circuit board connected to the light bar (3), and a switch (13) are installed in the housing (1); the switch (13) and the battery are electrically connected to the circuit board; and the switch (13) is installed at the lower right corner of the front of the housing (1).

5. The device for visually displaying magnetic lines of force of a magnet according to claim 1, characterized in that: A detachable columnar support foot (15) is installed at the bottom of the shell (1), and the shell (1) is provided with a storage hole (16) for storing the detached support foot (15).

6. The device for visually displaying magnetic lines of force of a magnet according to claim 1, characterized in that: The surface of the housing (1) is provided with a groove (14) for placing the magnet (4), and the magnet (4) for demonstration is installed in the groove (14).

7. The device for visually displaying magnetic lines of force of a magnet according to claim 4, characterized in that: A long cylindrical coil (17) is installed on the side of the cavity (11), and the coil (17) is electrically connected to the circuit board.

8. The device for visually displaying magnetic lines of force of a magnet according to claim 4, characterized in that: A coil (17) is provided on the ring side of the cavity (11) for wrapping the magnetic fluid (2) in the cavity (11), and the coil (17) is electrically connected to the circuit board.

9. A device for visually displaying magnetic lines of force of a magnet according to claim 7 or 8, characterized in that: The circuit board is connected to a regulating switch for controlling the current size and direction of the coil (17).

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