A slide rheostat analog demonstration teaching aid

Abstract

The utility model discloses a sliding rheostat simulation demonstration teaching aid relates to physical teaching aid technical field, the utility model discloses a support board is equipped with two, and two support boards fixedly arranged with plastic pipe, vertical board, two vertical boards symmetry and fixedly set up in the both ends of plastic pipe, wherein, vertical board one side wall is passed through and is opened to have installed groove hole, and the copper pipe is fixedly installed in installed groove hole inside, and the plastic pipe outer wall equidistance is equipped with a plurality of first LED lamp area, and a plurality of first LED lamp area between are parallelly connected. The utility model discloses a sliding rheostat simulation demonstration teaching aid, through the sliding shielding of shading pole to light hole, can simulate the effect that resistance changes in sliding rheostat, and then influence the light signal intensity received by photosensitive sensor, lead to the bright and dark change of first LED lamp area, and cooperate the use of second LED lamp area, be convenient for respectively demonstrating two kinds of connection method of corresponding sliding rheostat, and this kind of direct demonstration mode helps student to understand the working principle of sliding rheostat.

Description

Technical Field

[0001] This utility model relates to the field of physics teaching aids technology, and in particular to a sliding rheostat simulation demonstration teaching aid. Background Technology

[0002] In junior high school physics teaching, the sliding rheostat is one of the important electrical components. Students can usually grasp the basic connection method of the sliding rheostat relatively quickly, but they often face greater difficulties in understanding the principle of resistance change during the movement of the slider. The internal structure of the sliding rheostat is relatively complex, involving knowledge of resistance wire, slider, and current path, which is a cognitive challenge for junior high school students who mainly rely on visual thinking.

[0003] In traditional teaching, teachers typically use theoretical explanations and static diagrams. However, these methods fail to visually demonstrate the dynamic process of resistance change, resulting in students' insufficient understanding of the concept and impacting teaching effectiveness. Furthermore, in practical applications, students often struggle to accurately judge and adjust the sliding rheostat due to a lack of intuitive understanding of the resistance change process, further increasing the learning difficulty. Utility Model Content

[0004] The purpose of this invention is to provide a sliding rheostat simulation demonstration teaching aid to solve the problems mentioned in the background art.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0006] A sliding rheostat simulation demonstration teaching aid, including

[0007] The bracket plate has two parts, and plastic tubes are fixedly installed on the two bracket plates;

[0008] Vertical plates, two of which are symmetrically and fixedly installed at both ends of the plastic tube;

[0009] The vertical plate has a through-hole for mounting, a copper tube is fixedly installed inside the mounting hole, and a number of first LED light strips are evenly spaced on the outer wall of the plastic tube, and the number of first LED light strips are connected in parallel.

[0010] The outer wall of the plastic tube has several light holes, and a photosensitive sensor located below the light holes is fixedly installed on the inner wall of the plastic tube. The first LED light strip is connected to the photosensitive sensor through a first wire.

[0011] A second LED strip is fixedly installed on the outer wall of the plastic tube between two adjacent first LED strips, and several second LED strips are connected in parallel. A control switch is fixedly connected to one side wall of the bracket plate, and the control switch is connected in series with several second LED strips.

[0012] A power supply assembly, located below the plastic tube, is used to supply power to the first LED light strip.

[0013] Preferably, one end of the photosensitive sensor is connected to a second wire, the second wire is connected to one of the copper tubes, one end of the first LED light strip is connected to a third wire, the third wire is connected to the other copper tube, the control switch is connected to one of the copper tubes via a sixth wire, and the second LED light strip is connected to the other copper tube via a seventh wire.

[0014] Preferably, the power supply assembly includes a student power supply, which has a positive terminal and a negative terminal. A fourth wire is connected to the positive terminal, and one end of the fourth wire is connected to one of the copper pipes. A fifth wire is connected to the negative terminal, and the fifth wire is connected to the other copper pipe.

[0015] Preferably, a horizontal guide rod is fixedly connected between the two vertical plates. A sleeve is slidably fitted on the outer wall of the horizontal guide rod. An indicator rod and a light-shielding rod are fixedly connected to the outer wall of the sleeve. The indicator rod is positioned above a plurality of first LED light strips. The lower outer wall of the light-shielding rod is attached to the light hole.

[0016] Preferably, a guide block is fixedly connected to the outer wall of the sleeve, and an internal threaded slot is opened through one side wall of the guide block. A screw is movably connected inside the internal threaded slot. A through opening is opened through one side wall of one of the vertical plates, and a rotating rod is movably connected inside the through opening. One end of the rotating rod is fixedly connected to one end of the screw, and a handle is fixedly connected to the other end of the rotating rod.

[0017] Preferably, an adapter cylinder is fixedly connected to one side wall of another vertical plate, and an adapter shaft is rotatably connected to the inner wall of the adapter cylinder cavity. One end of the adapter shaft is fixedly connected to the other end of the screw.

[0018] Compared with the prior art, this utility model has the following advantages:

[0019] This invention simulates the effect of resistance change in a sliding rheostat by sliding the light-blocking rod to block the light aperture, thereby affecting the intensity of the light signal received by the photosensitive sensor and causing the first LED strip to change on and off. In addition, the use of the second LED strip makes it easy to demonstrate the two connection methods of the corresponding sliding rheostat. This intuitive demonstration method helps students to understand the working principle of the sliding rheostat in depth.

[0020] The guide block on the outer wall of the sleeve, its cooperation with the screw, and the design of the rotating rod and handle make the movement of the sliding component smoother and more precise. The adapter sleeve and adapter shaft ensure stable rotation of the screw, thus achieving precise control over the position of the sliding component. The entire device simulates the working process of a sliding rheostat, transforming abstract electrical principles into intuitive visual effects, greatly improving teaching effectiveness and student learning interest. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall external structure of a sliding rheostat simulation teaching aid;

[0022] Figure 2 A first-view structural diagram of a sliding rheostat simulation teaching aid;

[0023] Figure 3 A schematic diagram of the second-view structure of a sliding rheostat simulation teaching aid;

[0024] Figure 4 A third-view structural diagram of a sliding rheostat simulation teaching aid;

[0025] Figure 5 This is a circuit connection diagram for a sliding rheostat simulation teaching aid.

[0026] In the diagram: 1. Support plate; 2. Plastic tube; 3. Vertical plate; 4. Copper tube; 5. First LED light strip; 6. Light hole; 7. Photosensitive sensor; 8. Student power supply; 9. Fourth wire; 10. Horizontal guide rod; 11. Sleeve; 12. Indicator rod; 13. Light blocking rod; 14. Guide block; 15. Screw; 16. Rotating rod; 17. Handle; 18. Adapter cylinder; 19. Adapter shaft; 20. Fifth wire; 21. Second LED light strip; 22. Control switch. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example:

[0029] Please see Figures 1-4 As shown, this utility model is a teaching aid for simulating a sliding rheostat, including...

[0030] Support plate 1, two support plates 1 are provided, and plastic tubes 2 are fixedly installed on the two support plates 1;

[0031] Vertical plates 3, two of which are symmetrically and fixedly disposed at both ends of the plastic tube 2;

[0032] The vertical plate 3 has a through-hole for mounting, and a copper tube 4 is fixedly installed inside the mounting hole. A plurality of first LED light strips 5 are evenly spaced on the outer wall of the plastic tube 2, and the plurality of first LED light strips 5 are connected in parallel.

[0033] The outer wall of the plastic tube 2 is provided with a plurality of light holes 6, and a photosensitive sensor 7 located below the light holes 6 is fixedly installed on the inner wall of the plastic tube 2. The first LED light strip 5 is connected to the photosensitive sensor 7 through a first wire.

[0034] A second LED strip 21 is fixedly installed on the outer wall of the plastic tube 2 between two adjacent first LED strips 5. Several second LED strips 21 are connected in parallel. A control switch 22 is fixedly connected to one side wall of the bracket plate 1. The control switch 22 is connected in series with several second LED strips 21.

[0035] A power supply assembly is disposed below the plastic tube 2 and is used to supply power to the first LED light strip 5.

[0036] As shown above, the main frame of the entire device is formed by the support plate 1 and the plastic tube 2. The vertical plates 3 at both ends not only provide support but also provide a location for the installation of the copper tube 4. The copper tube 4, as a conductive component, works in conjunction with the equally spaced first LED light strip 5 and the second LED light strip 21 to visually demonstrate changes in current. The light holes 6 on the outer wall of the plastic tube 2 and the photosensitive sensor 7 installed on the inner wall, together with the first LED light strip 5, cleverly convert the light signal into an electrical signal to control the opening of the first LED light strip 5. By controlling the sequential lighting of multiple first LED light strips 5, a visual display of resistance changes is achieved for students.

[0037] In specific implementation, the first LED light strip 5 can be red, and the second LED light strip 21 can be blue, to make a distinction;

[0038] The circuit connection diagram is as follows: Figure 5 As shown, Figure 5 In the circuit, s represents the control switch 22, L1, L2...Ln represent several second LED light strips 21, r represents the photosensitive sensor 7, and L11, L12...L1n represent several first LED light strips 5;

[0039] In practical use, on the one hand, the personnel activate several second LED light strips 21 by controlling switch 22, and then the personnel slide indicator rod 12 from one end to the other end, and several first LED light strips 5 light up in sequence. This demonstration effect can be used to show the voltage divider connection of the sliding rheostat.

[0040] On the other hand, if the personnel do not activate the second LED light strip 21 through the control switch 22, the second LED light strip 21 will not light up. Then, if the personnel slide the indicator rod 12 from one end to the other end, several first LED light strips 5 will light up in sequence. This demonstration effect can be used to show the current-limiting connection of the sliding rheostat.

[0041] refer to Figure 2 , Figure 3 and Figure 4 As shown, one end of the photosensitive sensor 7 is connected to a second wire, which is connected to one of the copper tubes 4. One end of the first LED light strip 5 is connected to a third wire, which is connected to the other copper tube 4. The control switch 22 is connected to one of the copper tubes 4 via a sixth wire, and the second LED light strip 21 is connected to the other copper tube 4 via a seventh wire.

[0042] The power supply assembly includes a student power supply 8, which has a positive terminal and a negative terminal. A fourth wire 9 is connected to the positive terminal, and one end of the fourth wire 9 is connected to one of the copper pipes 4. A fifth wire 20 is connected to the negative terminal, and the fifth wire 20 is connected to the other copper pipe 4.

[0043] As shown above, the student power supply 8 provides stable power support for the entire demonstration process. The fourth wire 9 and the fifth wire 20, which are connected to the positive and negative terminals respectively, are connected to the copper pipe 4 to form a complete circuit loop, ensuring that the current can flow smoothly. There are multiple photosensitive sensors 7. One photosensitive sensor 7 is connected in series with the first LED light strip 5, and multiple first LED light strips 5 are connected in parallel, thus forming a complete circuit, so that the change in resistance can be intuitively presented by the lighting of the first LED light strip 5.

[0044] The control switch 22 is connected to one of the copper tubes 4 via a sixth wire, and the second LED light strip 21 is connected to the other copper tube 4 via a seventh wire, thus forming a complete circuit. All the second LED light strips 21 can be turned on and off by a control switch 22.

[0045] refer to Figure 3 and Figure 4As shown, a horizontal guide rod 10 is fixedly connected between the two vertical plates 3. A sleeve 11 is slidably sleeved on the outer wall of the horizontal guide rod 10. An indicator rod 12 and a light-shielding rod 13 are fixedly connected to the outer wall of the sleeve 11. The indicator rod 12 is set above a plurality of first LED light strips 5. The lower outer wall of the light-shielding rod 13 is attached to the light hole 6.

[0046] As shown above, by sliding the light-blocking rod 13 to block the light aperture 6, the effect of resistance change in a sliding rheostat can be simulated, thereby affecting the intensity of the light signal received by the photosensitive sensor 7, resulting in the on / off change of the first LED strip 5. This intuitive demonstration helps students to deeply understand the working principle of the sliding rheostat.

[0047] Depend on Figures 1-2 It is known that a guide block 14 is fixedly connected to the outer wall of the sleeve 11. An internal threaded slot is opened through one side wall of the guide block 14. A screw 15 is movably connected inside the internal threaded slot. A through opening is opened through one side wall of the vertical plate 3. A rotating rod 16 is movably connected inside the through opening. One end of the rotating rod 16 is fixedly connected to one end of the screw 15, and the other end of the rotating rod 16 is fixedly connected to a handle 17.

[0048] Another vertical plate 3 has an adapter cylinder 18 fixedly connected to one side wall. The adapter cylinder 18 has an adapter shaft 19 rotatably connected to the inner wall of its cavity. One end of the adapter shaft 19 is fixedly connected to the other end of the screw 15.

[0049] As can be seen from the above, the cooperation between the guide block 14 on the outer wall of the sleeve 11 and the screw 15, as well as the design of the rotating rod 16 and the handle 17, make the movement of the sliding assembly more stable and precise. The adapter cylinder 18 and the adapter shaft 19 ensure the stable rotation of the screw 15, thereby achieving precise control of the sliding assembly's position. The entire device, by simulating the working process of a sliding rheostat, transforms abstract electrical principles into intuitive visual effects, greatly improving teaching effectiveness and students' learning interest.

[0050] All standard parts used in this invention can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all use conventional models in the prior art, and the circuit connections also use conventional connection methods in the prior art, which will not be detailed here. Any content not described in detail in this specification belongs to the prior art known to those skilled in the art.

[0051] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified.

[0052] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0053] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0054] 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0055] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0056] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sliding rheostat simulation teaching aid, characterized in that: include Support plate (1), two support plates (1) are provided, and plastic tubes (2) are fixedly installed on the two support plates (1); Vertical plates (3), two vertical plates (3) are symmetrically and fixedly installed at both ends of the plastic tube (2); Among them, a mounting slot is provided through one side wall of the vertical plate (3), and a copper tube (4) is fixedly installed inside the mounting slot. A number of first LED light strips (5) are arranged at equal intervals on the outer wall of the plastic tube (2), and the number of first LED light strips (5) are connected in parallel. The outer wall of the plastic tube (2) is provided with several light holes (6), and a photosensitive sensor (7) located below the light holes (6) is fixedly installed on the inner wall of the plastic tube (2). The first LED light strip (5) is connected to the photosensitive sensor (7) through a first wire. A second LED strip (21) is fixedly installed on the outer wall of the plastic tube (2) between two adjacent first LED strips (5), and several second LED strips (21) are connected in parallel. A control switch (22) is fixedly connected to one side wall of the bracket plate (1), and the control switch (22) is connected in series with several second LED strips (21). A power supply assembly is disposed below the plastic tube (2) and is used to supply power to the first LED light strip (5).

2. The sliding rheostat simulation teaching aid according to claim 1, characterized in that: One end of the photosensitive sensor (7) is connected to a second wire, which is connected to one of the copper tubes (4). One end of the first LED light strip (5) is connected to a third wire, which is connected to the other copper tube (4). The control switch (22) is connected to one of the copper tubes (4) via a sixth wire, and the second LED light strip (21) is connected to the other copper tube (4) via a seventh wire.

3. The sliding rheostat simulation teaching aid according to claim 2, characterized in that: The power supply assembly includes a student power supply (8), which has a positive terminal and a negative terminal. A fourth wire (9) is connected to the positive terminal. One end of the fourth wire (9) is connected to one of the copper pipes (4). A fifth wire (20) is connected to the negative terminal. The fifth wire (20) is connected to the other copper pipe (4).

4. The sliding rheostat simulation teaching aid according to claim 1, characterized in that: A horizontal guide rod (10) is fixedly connected between the two vertical plates (3). A sleeve (11) is slidably fitted on the outer wall of the horizontal guide rod (10). An indicator rod (12) and a light-shielding rod (13) are fixedly connected to the outer wall of the sleeve (11). The indicator rod (12) is positioned above several first LED light strips (5). The lower outer wall of the light-shielding rod (13) is attached to the light hole (6).

5. The sliding rheostat simulation teaching aid according to claim 4, characterized in that: A guide block (14) is fixedly connected to the outer wall of the sleeve (11). An internal threaded slot is opened through one side wall of the guide block (14). A screw (15) is movably connected inside the internal threaded slot. A through opening is opened through one side wall of one of the vertical plates (3). A rotating rod (16) is movably connected inside the through opening. One end of the rotating rod (16) is fixedly connected to one end of the screw (15). A handle (17) is fixedly connected to the other end of the rotating rod (16).

6. The sliding rheostat simulation teaching aid according to claim 5, characterized in that: Another vertical plate (3) has an adapter cylinder (18) fixedly connected to one side wall. The adapter cylinder (18) has an adapter shaft (19) rotatably connected to the inner wall of its cavity. One end of the adapter shaft (19) is fixedly connected to the other end of the screw (15).

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