A simple linear motor car powered by dry cell batteries with perforated magnets attached.

Abstract

We provide a simple linear motor car powered by dry cell batteries and equipped with a perforated magnet, which can run continuously for multiple laps even on circular rails where vibrations during operation can easily cause misalignment, making it useful for experimental observation. [Solution] By attaching a perforated neodymium magnet (5) to the positive electrode side of the AA battery (4) used in the linear motor car, and a perforated neodymium magnet (6) to the negative electrode side, the magnets become less likely to shift due to running vibrations, contributing to stable running. By using perforated magnets, a grip is created, making it less likely for the electrodes and magnets to shift due to running vibrations. Magnets used in simple linear motor cars require strong magnetic force and conductive properties, and generally, neodymium magnets with plated surfaces are suitable. However, the magnetic attraction force alone is insufficient, as running vibrations can cause the magnets to shift position and prevent the car from running. This solution aims to solve this problem.

Description

Technical Field

[0001] This invention relates to magnets at both ends of a simple linear motor car.

Background Art

[0002] Generally, in the running experiment of a simple linear motor car conducted in the unit of "Current and Magnetic Field" introduced in science textbooks, it is often seen that the magnet attached to the dry battery is displaced due to the vibration during running and cannot run.

Prior Art Documents

Non-Patent Documents

[0003]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The magnet used for a simple linear motor car requires strong magnetic force and the property of conducting electricity. Generally, a neodymium magnet with a plated surface is suitable. However, with only the adsorption force of this magnetic force, the position will be displaced due to the running vibration and it will not be able to run. Therefore, this invention aims to solve this drawback.

Means for Solving the Problems

[0005] In one embodiment of this invention, the AA dry battery has a metal electrode with a diameter of about 5 mm and a height of about 2 mm at the positive electrode and a metal terminal with a diameter of about 8 mm and a height of about 0.5 mm at the negative electrode. By using a perforated magnet as the magnet to be used, a catch is generated, and it becomes difficult for the electrode and the magnet to be displaced even by the vibration during running.

Effects of the Invention

[0006] The simple linear motor car equipped with the perforated magnet of this invention can continuously run for several laps even on a circular rail where displacement is likely to occur due to vibration during running, which is useful for experimental observation. [Brief explanation of the drawing]

[0007] [Figure 1] This is a front view of an embodiment of the present invention in which a dry cell battery and a perforated magnet are attached. [Figure 2] This is a partially cutaway cross-sectional view of the dry cell battery and perforated magnet of the present invention. [Figure 3] This diagram illustrates the shape of a linear motor car equipped with the perforated magnets of this invention, as it travels along the rails. [Modes for carrying out the invention]

[0008] The dry cell batteries used in the linear motor car of this invention are commercially available, but they should be selected to match the size of the coils that will form the running rails. The perforated magnets attached to the front and rear should be selected to match the thickness of the dry cell batteries and the shape of the positive and negative terminals. [Examples]

[0009] An embodiment will be described below with reference to the attached drawings. 1 is a commercially available AA battery, 2 is a perforated neodymium magnet attached to the positive electrode side of the battery, and 3 is a perforated neodymium magnet attached to the negative electrode side of the battery.

[0010] Image 4 is a cross-section of an AA battery, image 5 is a cross-section of a 3mm countersunk neodymium magnet attached to the positive electrode, image 6 is a cross-section of a 4mm countersunk neodymium magnet attached to the negative electrode, and image 7 shows the linear motor inside a coil. [Explanation of Symbols]

[0011] 1 AA battery 2. Neodymium magnet on the positive electrode side 3. Neodymium magnet on the negative electrode side 4. Cross-section of an AA battery 5. Cross-sectional view of the neodymium magnet on the positive electrode side. 6. Cross-sectional view of the neodymium magnet on the negative electrode side. 7. Photograph of a linear motor car running on the track in one embodiment.

Claims

[Claim 1] A simplified linear motor car characterized by attaching perforated magnets to both poles of the dry cell battery used in the simplified linear motor car.

Images