Ampere force demonstrator

Abstract

The utility model discloses an ampere force demonstrator, and belongs to the field of teaching experiment instruments. The demonstrator comprises a base, a coil rack is arranged on the base, and two magnetic devices are symmetrically arranged on the two sides of the coil rack along the center of the coil rack. A wire capable of being electrified is wound on the coil rack; a connecting part is formed at the lower end of the coil rack; the lower end of the connecting part is connected with a gravity sensor; the two magnetic devices can move towards each other and away from each other; the device further comprises a control center, the control center comprises a displayer arranged on the base, and the control center is electrically connected with the gravity sensor. According to the utility model, the gravity sensor is connected with the control center, and the magnitude of the Ampere force is directly read on the display screen through the gravity sensor, so that the magnitude of the Ampere force can be observed more visually. In addition, the current, the magnetic field intensity and the included angle between the magnetic field and the current can be adjusted through the control center, and various factors influencing the Ampere force can be conveniently experimented and explored.

Description

Technical Field

[0001] The utility model relates to a teaching experimental instrument, in particular to an Ampere force demonstrator. Background Art

[0002] Ampere force is an important part of physics courses and one of the basic contents of electromagnetism. In order to understand the nature of Ampere force and delve into the factors affecting Ampere force, teaching generally combines experiments for analysis.

[0003] Common experimental demonstrators typically place a charged wire within a magnetic field and observe its movement to understand the Ampere force. This experimental method relies primarily on visual observation and is not intuitive. This is especially true when analyzing the factors that influence the magnitude of the Ampere force. Furthermore, many demonstrators require numerous accessories, such as external power supplies, making movement and assembly of the entire demonstrator quite inconvenient. Changing the input and output conditions of conventional demonstrators often requires reinstalling the experimental equipment, which is quite cumbersome. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an Ampere force demonstrator which can flexibly change input conditions, is convenient for observation, and is simple to operate.

[0005] The technical solution of the utility model is:

[0006] An Ampere force demonstrator, characterized in that it comprises a base, a coil frame provided on the base, two magnetic devices symmetrically provided on either side of the coil frame along the center of the coil frame; a conductive wire capable of carrying electricity is wound around the coil frame; the upper end of the coil frame is higher than the upper end of the magnetic device, and the lower end of the coil frame forms a connecting portion, the lower end of the connecting portion being connected to a gravity sensor; the two magnetic devices are capable of moving toward and away from each other;

[0007] The device further comprises a control center, which comprises a display arranged on a base, and the control center is electrically connected to the gravity sensor.

[0008] Preferably, the coil frame is rotatable around the central axis of the connecting portion.

[0009] Preferably, the lower end of the connecting portion is further connected to a first driving mechanism, and the first driving mechanism can drive the coil frame to rotate; the first driving mechanism is electrically connected to the control center.

[0010] Preferably, it also includes a control power supply, which is connected to two power connection wires; the coil frame is provided with two wire holes, the power connection wires extend from the wire holes and can be connected to the wires on the coil frame; the control power supply is also electrically connected to the control center.

[0011] Preferably, the coil frame is provided with a winding groove, in which a plurality of turns of wire are wound, and a connector extends from each turn of wire; the coil frame is provided with a plurality of through holes, and a connector extends from each turn of wire from a through hole.

[0012] Preferably, a storage box is provided at each of the two magnetic devices, and the magnetic device is movably placed in the storage box.

[0013] Preferably, the base is provided with two moving parts capable of moving toward and away from each other, and the two magnetic devices are respectively mounted on the two moving parts.

[0014] Preferably, it also includes a second driving mechanism, the output end of which is connected to a gear mechanism and can drive the gear mechanism to rotate forward or reverse; a plurality of racks are provided on the opposite surfaces of the two moving parts, the gear mechanism and the racks are meshed with each other and can drive the two moving parts to move; the second driving mechanism is electrically connected to the control center.

[0015] Preferably, two guide blocks are provided on the base, and the two magnetic devices are provided with guide holes at positions corresponding to the guide blocks.

[0016] Preferably, the two magnetic devices are magnets, and the magnetism of the two magnets can be adjusted but always remains equal to each other.

[0017] The beneficial technical effects of the utility model are:

[0018] 1. By connecting the gravity sensor to the control center, the size of the Ampere force can be directly read on the display screen through the gravity sensor, which can more intuitively observe the size of the Ampere force;

[0019] 2. The distance between the magnetic devices is adjustable, which can easily adjust the magnetic field intensity;

[0020] 3. The experimental device is integrated on the base and is easy to move;

[0021] 4. The current, magnetic field strength, and angle between the magnetic field and current can be adjusted through the control center, making it easier to experimentally explore the various factors that affect the Ampere force. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 yes Figure 1 Schematic diagram of part I;

[0024] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0025] Figure 4 It is a schematic diagram of the moving part;

[0026] in:

[0027] Base 100; coil frame 101; magnetic device 103; display 104; first driving mechanism 105; wire hole 106; through hole 107; storage box 108; moving part 109; second driving mechanism 110; gear mechanism 111; guide block 112;

[0028] Connecting portion 1011; rack 1091. DETAILED DESCRIPTION

[0029] In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples. The following examples are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0030] like Figure 1-Figure 4 This embodiment includes a base 100, on which is disposed a coil frame 101 perpendicular to the base 100, and two magnetic devices 103 symmetrically disposed along the center of the coil frame on both sides of the coil frame. The lower end of the coil frame is connected to a gravity sensor.

[0031] A magnetic field can be generated between the two magnetic devices 103 , and the magnetic induction intensity of the magnetic field can be adjusted.

[0032] In one embodiment, a storage box 108 is provided at each of the two magnetic devices 103, and the two magnetic devices 103 are each movably placed in the storage box 108. Preferably, the magnetic devices 103 are magnets. The magnetism of the two magnets can be adjusted but always remains equal to each other. When the magnetic field strength between the magnets needs to be changed, it is only necessary to replace them with magnets of different magnetic strengths at the same time. In a preferred embodiment, the distance between the two storage boxes 108 can also be adjusted to change the magnetic field strength. The method of adjusting the distance is referred to the design of the movable portion 109 below.

[0033] In another embodiment, the magnetic field strength can be changed by adjusting the distance between the two magnetic devices 103, enabling the two magnetic devices 103 to move toward and away from each other. There are various ways to achieve this movement. For example, in one embodiment, a second drive mechanism 110 is provided below the base 100. The output end of the second drive mechanism 110 is connected to a gear mechanism 111 and can drive the gear mechanism 111 to rotate forward or reverse. The base 100 is provided with two movable portions 109 capable of moving toward and away from each other. A plurality of racks 1091 are provided on opposing surfaces of the two movable portions 109. The gear mechanisms 111 and the racks 1091 mesh with each other and can drive the two movable portions 109 to move. When the second drive mechanism 110 drives the gear mechanism 111 to rotate forward or reverse, the gear mechanism 111 can drive the two movable portions 109 and the two magnetic devices 103 to move toward and away from each other. To facilitate the movement of the movable portions 109, two guide rails are provided on the base 100, along which the two movable portions 109 move. In order to facilitate the movement of the magnetic device 103, two guide blocks 112 are provided on the base 100. The two magnetic devices 103 are provided with guide holes at positions corresponding to the guide blocks 112, so that the magnetic device 103 can slide along the guide blocks 112 to avoid damage to the device due to excessive local stress.

[0034] Several turns of electrically conductive wire (not shown) are wound around bobbin 101. The top of bobbin 101 is elevated above the top of magnetic device 103 to prevent the wire above bobbin 101 from entering the magnetic field. This ensures that the effective length of conductive wire in the magnetic field is limited to the length of the wire at the bottom of bobbin 101.

[0035] The lower end of the coil frame 101 forms a connecting portion 1011. The connecting portion is elongated, with no specific cross-sectional shape. The coil frame 101 is capable of rotating about the central axis of the connecting portion. There are various ways to achieve this rotation. For example, in one embodiment, the lower end of the connecting portion is connected to the output end of a first drive mechanism 105, which is capable of driving the connecting portion to rotate. The purpose of rotating the connecting portion is to experimentally explore the relationship between the angle between the direction of the magnetic field and the direction of the current in the current-carrying conductor and the Ampere force.

[0036] In one embodiment, the coil frame 101 and the base 100 are movably connected, so that the coil frame 101 can be easily assembled and disassembled.

[0037] In this embodiment, a control power supply is also provided, which is connected to two power connection wires. Coil bobbin 101 is provided with two wire holes 106, through which the power connection wires extend and connect to the wires on coil bobbin 101, thereby energizing the wires on coil bobbin 101. By controlling the power supply, the current in the wires on coil bobbin 101 can be varied, thereby experimentally exploring the relationship between current and Ampere force.

[0038] The coil bobbin 101 has a winding groove with several turns of wire wound inside. Each turn has a connector extending from it. The coil bobbin 101 also has several through-holes 107, with a connector extending from each turn. By connecting the power cord of the control power supply to different connectors, different turns of wire on the coil bobbin 101 can be energized, allowing experiments to explore the relationship between the number of turns of wire energized and the Ampere force.

[0039] In this embodiment, a control center is also provided. The control center includes a display 104 disposed on the base 100. The control center is electrically connected to the gravity sensor, so that the value measured by the gravity sensor is displayed on the display 104. The control center is also connected to the first and second drive mechanisms and the control power supply to control the spacing between the two magnetic devices 103, the rotation angle of the coil bobbin 101, and the current intensity of the wires on the coil bobbin 101. In a preferred embodiment, the display 104 is a touch screen.

[0040] The operating principle of the present invention is as follows: select the magnetic device 103, place the coil frame 101 between the two magnetic devices 103, connect the power connection line of the control power supply to the connector of the wire on the coil frame 101 so that the wire is wired, adjust the direction of the current so that the Ampere force value is downward, and the gravity sensor is subjected to force, and the magnitude of the Ampere force is displayed on the display 104.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An Ampere force demonstrator, characterized in that: The invention comprises a base (100), wherein a coil frame (101) is provided on the base (100), and two magnetic devices (103) are symmetrically provided on both sides of the coil frame (101) along the center of the coil frame (101); a wire capable of being energized is wound around the coil frame (101); the upper end of the coil frame (101) is higher than the upper end of the magnetic device (103), and the lower end of the coil frame (101) forms a connecting portion (1011), and the lower end of the connecting portion (1011) is connected to a gravity sensor; the two magnetic devices (103) can move toward and away from each other; It also includes a control center, which includes a display (104) arranged on the base (100), and the control center is electrically connected to the gravity sensor.

2. The Ampere force demonstrator according to claim 1, characterized in that: The coil frame (101) is capable of rotating around the central axis of the connecting portion (1011).

3. The Ampere force demonstrator according to claim 2, characterized in that: The lower end of the connecting portion (1011) is also connected to a first driving mechanism (105), and the first driving mechanism (105) is capable of driving the coil frame (101) to rotate; the first driving mechanism (105) is electrically connected to the control center.

4. The Ampere force demonstrator according to claim 1, characterized in that: It also includes a control power supply, which is connected to two power connection wires; the coil frame (101) is provided with two wire holes (106), and the power connection wires extend from the wire holes (106) and can be connected to the wires on the coil frame (101); the control power supply is also electrically connected to the control center.

5. The Ampere force demonstrator according to claim 4, characterized in that: The coil frame (101) is provided with a winding groove, in which a plurality of turns of wire are wound, and each turn of wire has a connector extending therefrom; the coil frame (101) is provided with a plurality of through holes (107), and each connector of a turn of wire extends from a through hole (107).

6. The Ampere force demonstrator according to claim 1, characterized in that: A storage box (108) is provided at each of the two magnetic devices (103), and the magnetic device (103) is movably placed in the storage box (108).

7. The Ampere force demonstrator according to claim 1, characterized in that: The base (100) is provided with two moving parts (109) capable of moving toward and away from each other, and the two magnetic devices (103) are respectively mounted on the two moving parts (109).

8. The Ampere force demonstrator according to claim 7, characterized in that: The invention also includes a second driving mechanism (110), wherein the output end of the second driving mechanism (110) is connected to a gear mechanism (111) and can drive the gear mechanism (111) to rotate forward or reverse; a plurality of racks (1091) are provided on the opposite surfaces of the two moving parts (109), and the gear mechanism (111) and the racks (1091) are meshed with each other and can drive the two moving parts (109) to move; the second driving mechanism (110) is electrically connected to the control center.

9. The Ampere force demonstrator according to claim 1, characterized in that: Two guide blocks (112) are provided on the base (100), and the two magnetic devices (103) are provided with guide holes at positions corresponding to the guide blocks (112).

10. The Ampere force demonstrator according to claim 1, characterized in that: The two magnetic devices (103) are magnets, and the magnetism of the two magnets can be adjusted but always remains equal to each other.

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