A hand-cranking frictional electrification machine demonstration device

Abstract

The utility model relates to a hand -operated frictional electrification machine demonstration device, including setting on the rotating friction body of base, shake handle, friction material layer, conducting rod and light object, rotating friction body rotation setting on the base, shake handle is used for driving rotating friction body rotation, friction material layer and the outer surface of rotating friction body contact, the tip of conducting rod end is extended to the tip of rotating friction body, and the tip and the outer surface of rotating friction body leave the gap between, and the front end of conducting rod is connected with the collection device of suspension, and light object places in the below of collection device. The hand -operated frictional electrification machine demonstration device provided by the utility model increases the interactivity of demonstration device, and the static electricity is produced through the contact friction of friction material layer and rotating friction body by shaking shake handle, and the static electricity produces the adsorption effect to light object through collection device, makes the demonstration process more vivid image, thereby plays better teaching inspiration effect.

Description

Technical Field

[0001] This utility model belongs to the technical field of teaching demonstration equipment, and specifically relates to a hand-cranked friction starter motor demonstration device. Background Technology

[0002] Triboelectricity is the result of electrons transferring from one object to another. The object that gains electrons becomes negatively charged, and the object that loses electrons becomes positively charged. Furthermore, rubbed objects tend to attract small, light objects. Demonstration devices related to triboelectricity can be seen in schools and science museums for educational purposes; however, existing demonstration devices lack interactivity and cannot provide effective educational inspiration. Utility Model Content

[0003] In view of this, the purpose of this utility model is to address the shortcomings of the existing technology by providing a hand-cranked friction starter demonstration device, thereby improving the interactivity of the demonstration device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A hand-cranked friction starter demonstration device includes a rotating friction body, a crank handle, a friction material layer, a conductive rod, and a lightweight object mounted on a base. The rotating friction body is rotatably mounted on the base, and the crank handle is used to drive the rotating friction body to rotate. The friction material layer is in contact with the outer surface of the rotating friction body. The end of the conductive rod is a tip that extends to the rotating friction body, and there is a gap between the tip and the outer surface of the rotating friction body. A suspended current collector is connected to the front end of the conductive rod, and the lightweight object is placed below the current collector.

[0005] To better realize this utility model, the above structure is further optimized by providing a transparent outer shell on the outside of the base and extending the crank handle out of the transparent outer shell.

[0006] To better realize this utility model, the above structure is further optimized, and the rotating friction body is a friction ball.

[0007] To better realize this utility model, the above structure is further optimized. A fixing seat is provided on the base. The fixing seat is an arc-shaped structure that is adapted to the outer surface of the friction ball. The friction material layer covers the fixing seat.

[0008] To better realize this utility model, the above structure is further optimized, and the crank handle drives the rotating friction body to rotate through the belt transmission mechanism.

[0009] To better realize this utility model, the above structure is further optimized, and the lightweight object is a feather.

[0010] To better realize this utility model, the above structure is further optimized by using a copper ball as the current collector.

[0011] To better realize this utility model, the above structure is further optimized by making the rotating friction body a glass ball.

[0012] To better realize this utility model, the above structure is further optimized, and the friction material layer is a fur layer.

[0013] To better realize this utility model, the above structure is further optimized by making the end of the conductive rod an adjustable telescopic rod.

[0014] Compared with the prior art, this utility model has the following advantages: The hand-cranked friction starter demonstration device provided by this utility model increases the interactivity of the demonstration device. By cranking the handle, the friction material layer comes into contact with the rotating friction body and generates static electricity. The generated static electricity attracts lightweight objects through the current collecting device, making the demonstration process more vivid and thus playing a better role in teaching and inspiration. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is an exploded view of the demonstration device for the hand-cranked friction starter motor of this utility model; Figure 2 This is an isometric view of the present invention after the transparent outer shell has been removed; Figure 3 This is a side view of the present invention; Figure 4 This is a top view of the present invention.

[0017] In the picture: 1-Base, 2-Rotating friction body, 3-Crank handle, 4-Friction material layer, 5-Conductive rod, 6-Lightweight object, 7-Current collector, 8-Transparent shell, 9-Fixed seat, 10-Belt drive mechanism, 11-Telescopic rod. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] Please refer to Figures 1-4 This utility model provides a hand-cranked friction starter demonstration device, comprising a rotating friction body 2, a crank 3, a friction material layer 4, a conductive rod 5, and a lightweight object 6, which is a feather, mounted on a base 1, allowing for clearer observation of the feather's movement. The rotating friction body 2 is rotatably mounted on the base 1, and the crank 3 drives the rotating friction body 2 to rotate. The friction material layer 4 is in contact with the outer surface of the rotating friction body 2. Through friction, electrons are transferred from one object to another. The object that gains electrons becomes negatively charged, and the object that loses electrons becomes positively charged. Furthermore, the rubbed object exhibits an attraction for small, lightweight objects.

[0022] The conductive rod 5 extends to the tip of the rotating friction body 2, with a gap between the tip and the outer surface of the rotating friction body 2, allowing the tip to approach without contacting the surface. This facilitates charge accumulation. A suspended current collector 7 is connected to the front end of the conductive rod 5, and a lightweight object 6 is placed below the current collector 7. The end of the conductive rod is designed as an adjustable telescopic rod 11 to adjust the gap size. In this embodiment, the current collector 7 is a copper ball, and the lightweight object 6 is placed below it. The principle of electrostatic adsorption is used to attract the lightweight object 6, making the demonstration more vivid and engaging, thus providing better teaching and inspiration.

[0023] To provide protection, a transparent shell 8 is fitted on the outside of the base 1, and the crank handle 3 extends out of the transparent shell 8 to prevent hands from touching it and improve safety during operation. At the same time, the transparent shell 8 provides a dry environment for the demonstration process, preventing water molecules in the air from accelerating the dissipation of charge and improving the success rate of the demonstration experiment.

[0024] In this embodiment, the rotating friction body 2 is a glass friction ball, and the friction material layer 4 is a fur layer. A fixing seat 9 is provided on the base 1. The fixing seat 9 is an arc-shaped structure adapted to the outer surface of the friction ball. The friction material layer 4 covers the fixing seat 9, allowing the friction material layer 4 to better contact the surface of the friction ball, thereby increasing the contact area between the friction material layer 4 and the friction ball. The crank handle 3 drives the rotating friction body 2 to rotate via a belt drive mechanism 10. It should be noted that the support bases used to support the rotating friction body 2, the conductive rod 5, and the fixing seat 9 are all made of insulating material.

[0025] During the demonstration, by shaking the handle 3, the fur layer comes into contact with the friction ball and generates static electricity. The static electricity generated is conducted through the conductive rod 5 to the current collecting copper ball, which attracts the feathers below, causing them to move upward and adhere to the copper ball.

[0026] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A demonstration device for a hand-cranked friction starter motor, characterized in that: The device includes a rotating friction body, a crank handle, a friction material layer, a conductive rod, and a lightweight object, all mounted on a base. The rotating friction body is rotatably mounted on the base. The crank handle drives the rotating friction body to rotate. The friction material layer is in contact with the outer surface of the rotating friction body. The conductive rod extends to the tip of the rotating friction body, with a gap between the tip and the outer surface of the rotating friction body. A suspended current collector is connected to the front end of the conductive rod. The lightweight object is placed below the current collector. The end of the conductive rod is an adjustable telescopic rod.

2. The hand-cranked friction starter demonstration device according to claim 1, characterized in that: The base is fitted with a transparent outer shell, and the crank handle extends out of the transparent outer shell.

3. The hand-cranked friction starter demonstration device according to claim 1, characterized in that: The rotating friction body is a friction ball.

4. The hand-cranked friction starter demonstration device according to claim 3, characterized in that: The base is provided with a fixing seat, which is an arc-shaped structure adapted to the outer surface of the friction ball, and the friction material layer covers the fixing seat.

5. The hand-cranked friction starter demonstration device according to claim 4, characterized in that: The crank handle drives the rotating friction body to rotate via a belt drive mechanism.

6. The hand-cranked friction starter demonstration device according to claim 1, characterized in that: The lightweight object is a feather.

7. The hand-cranked friction starter demonstration device according to claim 1, characterized in that: The current collector is a copper ball.

8. The hand-cranked friction starter demonstration device according to claim 1, characterized in that: The rotating friction body is a glass ball.

9. A demonstration device for a hand-cranked friction starter motor according to any one of claims 1-8, characterized in that: The friction material layer is a fur layer.

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