Scribing type electricity demonstration instrument

Abstract

The utility model discloses a scribing type electricity demonstration instrument, which comprises a base, an induction pen and a circuit element unit, the base comprises an upper layer plate, a lower layer plate and a magnetic eraser, a plurality of connecting sheets are embedded in the upper layer plate, a plurality of magnetic cavities which are adjacent in pairs are arranged between the upper layer plate and the lower layer plate, magnetic powder is contained in the magnetic cavities, and a pen point of the induction pen is made of permanent magnet materials. The pen point of the induction pen is used for marking on the surface of the upper-layer plate, the magnetic powder in the marked magnetic cavity is adsorbed to the position above the current magnetic cavity, the connecting pieces in the marked magnetic cavity are mutually conducted, the magnetic cavities around the magnetic cavity where the magnetic cavity is located are mutually conducted through the connecting pieces, and deep-color conductive magnetic lines are formed in the magnetic cavity positions marked by the induction pen through the magnetic powder; and a circuit formed by the circuit element units needing to be demonstrated is conducted. According to the utility model, the stroke lines are used to replace leads to connect each element, which is neater and more standard, convenient for observing and researching the connection mode of the circuit, simple in structure, and convenient to use, modify and carry.

Description

Technical Field

[0001] The utility model relates to the field of electrical simulation tools, in particular to a scribing type electrical demonstrator. Background Art

[0002] Traditional circuit demonstration equipment is often designed to be large and bulky, which makes it inconvenient to move them between laboratories or classrooms. Large equipment not only takes up space, but may also limit the flexibility of teaching activities, especially when the experimental setup needs to be changed frequently. In addition, the large size becomes an obvious obstacle for situations where the equipment needs to be carried for on-site teaching or demonstrations. Secondly, the assembly process of many circuit demonstration equipment is complicated and needs to be carried out in specific steps and sequences, which is not only a challenge for beginners but also may consume a lot of learning time. The complexity of the assembly process will not only frustrate learners, especially when they need to repeatedly disassemble and reassemble the equipment to understand the working principles of different circuits, but also make learners spend most of their time and energy on assembling the equipment during the assembly learning process, while ignoring the understanding of the circuit.

[0003] In addition, in traditional circuit demonstration equipment, wires are used to connect various components together. The arrangement and connection of wires is a cumbersome process. Wires may become tangled and knotted, resulting in inefficient assembly and increasing the risk of errors. The complexity of wire management distracts learners and makes it difficult for them to focus on the basic principles and concepts of circuits. When using traditional electrical test boxes, learners often need to switch between physical circuits and circuit diagrams, which may cause difficulties in understanding. The three-dimensional layout of the physical circuit may not completely correspond to the two-dimensional representation of the circuit diagram, making it difficult for learners to intuitively see the connection between the two. This disconnect may hinder learners' understanding of circuit design and function, affect their ability to apply theoretical knowledge to practical problem solving, and hinder learners' further learning.

[0004] At present, conventional demonstrators mostly adopt modular assembly structures in order to demonstrate physical circuits with a light structure, such as the published patent document CN107862954A "A Physics and Electricity Demonstration Instrument for Middle School Students", but the circuits that can be constructed by this demonstrator are limited and cannot meet the needs of students at every stage. Utility Model Content

[0005] The utility model aims to provide a marking-type electrical demonstration instrument, which can omit wires, is easy to carry and use, and can also allow users to focus their time and energy on understanding and analyzing circuits, intuitively see the connection methods of various components, and meet the learning needs of users.

[0006] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical solutions:

[0007] A line-scribing electrical demonstration instrument comprises a base 1, an induction pen 2 and a circuit element unit, wherein the base 1 comprises an upper plate 3, a lower plate 7 and a degausser 4;

[0008] A plurality of connecting pieces 8 are embedded in the upper plate 3, and the connecting pieces 8 pass through the upper plate 3 from top to bottom and the connecting pieces 8 do not contact each other;

[0009] A plurality of adjacent magnetic cavities 5 are provided between the upper plate 3 and the lower plate 7. The magnetic cavities 5 are closed cavities that penetrate the upper plate 3 and the lower plate 7 from top to bottom. The magnetic cavities 5 contain magnetic powder 10. Adjacent magnetic cavities 5 are separated by cavity walls 11. The upper part of the magnetic cavity 5 is in contact with the connecting piece 8. The connecting pieces 8 are not connected to each other. Each connecting piece 8 has at least two parts located in different magnetic cavities 5, and each magnetic cavity 5 has at least one part of the connecting piece 8.

[0010] The circuit element unit comprises a circuit element 12 and a connection terminal 13, wherein the circuit element 12 is connected to the connection terminal 13;

[0011] The tip 6 of the induction pen 2 is made of permanent magnetic material, the magnetic powder 10 and the terminal 13 are made of magnetic conductive material, the connecting piece 8 is made of conductive material, the upper plate 3, the lower plate 7 and the cavity wall 11 are made of insulating material, and the upper plate 3 is made of transparent or translucent material.

[0012] Furthermore, the connection terminals 13 are located at the bottom of both sides of the circuit element 12 .

[0013] Furthermore, a contact sheet 9 in contact with the connecting sheet 8 is provided on the upper portion of each surface of the cavity wall 11 , and the contact sheet 9 is made of a conductive material.

[0014] Furthermore, the base 1 also includes a bottom plate located below the lower plate 7, and the demagnetizer 4 includes a demagnetization unit and a handle, the demagnetization unit is located between the lower plate 7 and the bottom plate, and the handle is located outside the lower plate 7, and is used to realize the left and right sliding of the demagnetizer 4 between the lower plate 4 and the bottom plate by pushing and pulling the handle.

[0015] Furthermore, the magnetic cavity 5 is a hexagonal prism cavity with a hexagonal cross-section, the connecting sheet 8 is a diamond-shaped thin sheet covering two adjacent magnetic cavities 5 , and the six adjacent inner walls of each magnetic cavity 5 are provided with contact sheets 9 , and each contact sheet 9 is in contact with a connecting sheet 8 .

[0016] The advantages of the utility model are:

[0017] The marking electrical demonstrator abandons the traditional wire connection method and uses the pen marking method to replace the physical wires to connect various components. This design not only saves the complicated wire management, but also makes the circuit layout more neat and standardized, which is convenient for observing and studying the circuit connection method, and greatly simplifies the circuit construction process.

[0018] The magnetic cavity in the demonstrator adopts an effective structural design, which allows the magnetic powder to be attracted to the top by the pen or circuit components to achieve conduction between adjacent magnetic cavities. It cleverly utilizes the magnetic principle so that the connectivity of the circuit is not limited to the components in direct contact, but can also be achieved through the transfer of magnetic powder between magnetic cavities.

[0019] The circuit components are equipped with magnetic terminals. When the components are placed on the upper board, the terminals can attract magnetic powder to the top of the magnetic cavity, and make the connecting pieces in a certain area near the terminals form a mutually conductive area, which is convenient for connecting with a pen. It allows the connecting pieces in a certain area near the terminals to be mutually conductive, making the connection with a pen more intuitive and convenient.

[0020] The structural design of the demonstrator focuses on portability. Due to the use of scribing and magnetic connection, the construction and modification of the circuit becomes very simple. Learners can quickly construct or adjust the circuit by scribing without reconnecting the wires, which greatly improves the efficiency and flexibility of the experiment. The demonstrator is compact and easy to carry and store. It can be quickly deployed and used in classrooms, laboratories, offices, and even outdoor teaching occasions. The installation and disassembly process is simple and fast. Users can easily set up the circuit as needed and quickly disassemble and clean it after the experiment.

[0021] The line-drawing electrical demonstrator not only helps learners to visually observe and study the connection methods of circuits, but also promotes a deeper understanding of circuit principles. Its intuitiveness and interactivity make the learning process more vivid and interesting, and help stimulate learners' interest and creativity. As a new teaching tool, it provides an innovative method for electrical teaching. By simplifying the circuit construction process, it allows teachers and students to devote more time and energy to the discussion of circuit design principles and the analysis of experimental results. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the use status of the utility model's line-marking electrical demonstration instrument;

[0023] Figure 2 This is a schematic diagram of the structure of the utility model's line-scribing electrical demonstration instrument;

[0024] Figure 3 This is a schematic diagram of the structure of the induction pen of the utility model;

[0025] Figure 4 This is a schematic diagram of the base and magnetic cavity structure of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of a circuit element unit in which the circuit element of the utility model is a power supply;

[0027] Figure 6 This is a schematic diagram of the circuit element unit structure of the utility model in which the circuit element is a small light bulb;

[0028] Figure 7 This is a schematic diagram of a circuit element unit structure in which the circuit element of the utility model is a resistor;

[0029] Figure 8 This is a schematic diagram of the circuit element unit structure of the utility model, in which the circuit element is a sliding rheostat;

[0030] Fig. 9 This is a schematic diagram of the structure of a circuit element unit in which the circuit element of the utility model is a switch;

[0031] Fig.10 This is a schematic diagram of the circuit element unit structure in which the circuit element of the utility model is an ammeter;

[0032] Fig.11 This is a schematic diagram of the circuit element unit structure in which the circuit element of the utility model is a voltmeter;

[0033] Among them, 1-base, 2-sensing pen, 3-upper plate, 4-demagnetizer, 5-magnetic cavity, 6-pen tip, 7-lower plate, 8-connecting piece, 9-contact piece, 10-magnetic powder, 11-cavity wall, 12-circuit element, 13-connecting terminal. DETAILED DESCRIPTION

[0034] Example 1

[0035] A line-scribing electrical demonstration instrument, please refer to Figure 1 and Figure 2 , including a base 1, a sensing pen 2 and a circuit element unit, the base 1 includes an upper plate 3, a lower plate 7 and a demagnetizer 4, the circuit element unit includes a circuit element 12 and a wiring terminal 13, and the circuit element 12 is connected to the wiring terminal 13.

[0036] Please refer to Figure 4The upper plate 3 is made of transparent or translucent material, and is embedded with a plurality of connecting pieces 8. The connecting pieces 8 penetrate the upper plate 3 from top to bottom, and the connecting pieces 8 do not touch each other. A plurality of adjacent magnetic cavities 5 are arranged between the upper plate 3 and the lower plate 7. The magnetic cavities 5 are closed cavities that penetrate and connect the upper plate 3 and the lower plate 7 from top to bottom. The magnetic cavities 5 contain magnetic powder 10. Adjacent magnetic cavities 5 are separated by cavity walls 11. The upper part of the magnetic cavity 5 is in contact with the connecting piece 8. The connecting pieces 8 are not connected to each other. Each connecting piece 8 has at least two parts located in different magnetic cavities 5, and each magnetic cavity 5 has at least one part of the connecting piece 8.

[0037] The magnetic cavity 5 is a hexagonal prism cavity with a hexagonal cross section. The connecting sheet 8 is a rhombus-shaped thin sheet covering two adjacent magnetic cavities 5. The inner walls of the six adjacent surfaces of each magnetic cavity 5 are provided with contact sheets 9. Each contact sheet 9 is in contact with a connecting sheet 8. The contact sheet 9 is made of conductive material. Please refer to Figure 3 The tip 6 of the induction pen 2 is made of permanent magnetic material, the magnetic powder 10 and the terminal 13 are made of magnetic conductive material, the connecting piece 8 is made of conductive material, and the upper plate 3, the lower plate 7 and the cavity wall 11 are made of insulating material.

[0038] The base 1 also includes a bottom plate located below the lower plate 7. The demagnetizer 4 includes a demagnetization unit and a handle. The demagnetization unit is located between the lower plate 7 and the bottom plate. The handle is located outside the lower plate 7 and is used to enable the demagnetizer 4 to slide left and right between the lower plate 4 and the bottom plate by pushing and pulling the handle.

[0039] Example 2

[0040] This embodiment is further improved on the basis of the embodiment 1, and the rest of the configuration is the same and will not be described again.

[0041] The connection terminals 13 are located at the bottom of both sides of the circuit element 12, so as to facilitate the connection with the connection sheet 8. For details, please refer to Figure 5-11 Different circuit elements 12 are provided with different positions and numbers of connection terminals. For example, when the circuit element 12 is a power source, Figure 5 As shown, the positive and negative poles of the power supply each correspond to a terminal 13; when the circuit element 12 is a small light bulb, a resistor or a switch, as shown in FIG. Figure 6 , 7 As shown in FIG. 9 , the two ends of the circuit element 12 correspond to a connection terminal 13 respectively; when the circuit element 12 is a sliding rheostat, as shown in FIG. Figure 8 As shown, at both ends of the resistor and the slider, there is a corresponding terminal 13, a total of four terminals; when the circuit element 12 is an ammeter or a voltmeter, as shown in FIG. Fig.10 , 11 As shown, the different range binding posts of the ammeter or voltmeter correspond to a wiring terminal 13 respectively.

[0042] Example 3

[0043] A scribing-type electrical demonstration method is implemented based on the scribing-type electrical demonstration instrument, comprising the steps of:

[0044] Place the circuit element unit on the upper plate 3, so that the connection terminal 12 is adsorbed on the upper plate 3 and connected to the connection piece 8;

[0045] The magnetic powder 10 in the magnetic cavity 5 where the connecting terminal 12 is located is adsorbed onto the top of the magnetic cavity 5, so that the connecting pieces 8 inside the magnetic cavity 5 are connected to each other, and the magnetic cavities 5 around the magnetic cavity 5 where the connecting terminal 12 is located are connected to each other through the connecting piece 8;

[0046] During the demonstration, the tip of the induction pen 2 draws a line on the surface of the upper plate 3 to connect various circuit element units. The magnetic powder 10 in the magnetic cavity 5 that has been drawn is adsorbed above the current magnetic cavity 5, so that the connecting pieces 8 inside the magnetic cavity 5 that has been drawn are connected to each other, and the magnetic cavities 5 around the magnetic cavity 5 are connected to each other through the connecting pieces 8.

[0047] The position of the magnetic cavity 5 where the induction pen 2 passes through forms a dark conductive magnetic line through the magnetic powder 10, which conducts the circuit composed of the circuit element unit to be demonstrated;

[0048] After the demonstration is finished, the handle of the demagnetizer 4 is pushed and pulled, so that the demagnetization unit of the demagnetizer slides from between the lower plate 7 and the bottom plate to demagnetize and restore the magnetic powder 10 to the bottom of the magnetic cavity 5 .

[0049] For the convenience of demonstration, a small demagnetizing block may be prepared to erase the magnetic powder adsorbed to a small area above the magnetic cavity 5 when a marking error occurs.

[0050] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A line-scribing electrical demonstration instrument, comprising a base (1), a sensing pen (2) and a circuit element unit, characterized in that: The base (1) comprises an upper plate (3), a lower plate (7) and a demagnetizer (4); The upper plate (3) has a plurality of connecting pieces (8) embedded therein, the connecting pieces (8) passing through the upper plate (3) from top to bottom and the connecting pieces (8) not contacting each other; A plurality of adjacent magnetic cavities (5) are provided between the upper plate (3) and the lower plate (7), the magnetic cavities (5) being closed cavities that penetrate the upper plate (3) and the lower plate (7) from top to bottom, each magnetic cavity (5) containing magnetic powder (10), adjacent magnetic cavities (5) being separated by cavity walls (11), the upper portions of the magnetic cavities (5) being in contact with the connecting pieces (8), the connecting pieces (8) not being connected to each other, each connecting piece (8) having at least two parts located in different magnetic cavities (5), and each magnetic cavity (5) having at least one part of the connecting piece (8); The circuit element unit comprises a circuit element (12) and a connection terminal (13), wherein the circuit element (12) is connected to the connection terminal (13); The tip (6) of the induction pen (2) is made of permanent magnetic material, the magnetic powder (10) and the connecting terminal (13) are made of magnetic conductive material, the connecting piece (8) is made of conductive material, the upper plate (3), the lower plate (7) and the cavity wall (11) are made of insulating material, and the upper plate (3) is made of transparent or translucent material.

2. The marking type electrical demonstration instrument according to claim 1, characterized in that: The connection terminals (13) are located at the bottom of both sides of the circuit element (12).

3. The marking type electrical demonstration instrument according to claim 1, characterized in that: A contact sheet (9) in contact with the connecting sheet (8) is provided on the upper portion of each surface of the cavity wall (11), and the contact sheet (9) is made of a conductive material.

4. The marking type electrical demonstration instrument according to claim 1, characterized in that: The base (1) further comprises a bottom plate located below the lower plate (7); the demagnetizer (4) comprises a demagnetization unit and a handle; the demagnetization unit is located between the lower plate (7) and the bottom plate; the handle is located outside the lower plate (7) and is used to enable the demagnetizer (4) to slide left and right between the lower plate (7) and the bottom plate by pushing and pulling the handle.

5. The marking type electrical demonstration instrument according to claim 1, characterized in that: The magnetic cavity (5) is a hexagonal prism cavity with a hexagonal cross section, the connecting piece (8) is a rhombus-shaped thin piece covering two adjacent magnetic cavities (5), and the six adjacent inner walls of each magnetic cavity (5) are provided with contact pieces (9), and each contact piece (9) is in contact with a connecting piece (8).

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