JPH0559483U - Unipolar induction rotation tester - Google Patents

Abstract

(57) [Summary] [Object] The present invention relates to an experimental device for a teaching tool for observing a unipolar induction phenomenon by a magnet and for rotating a magnet by applying a direct current to a conductive disk fixed to the magnet. [Structure] A circular magnet 3 is fixed to a conductor disc 1 to which a conductor shaft rod 2 is fixed, and between the conductor shaft rod 2 and the conductor disc 1 on the circumference,
The unipolar induced electromotive force that appears when the circular magnet 3 rotates is observed, or a direct current is passed between them to rotate the circular magnet 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention observes the phenomenon of monopolar induction and vice versa. It relates to an experimental device for a teaching tool that rotates a magnet with a direct current.

[0002]

[Prior Art]

 Conventionally, the phenomenon of unipolar induction rotates a conductive rod magnet that is designed to rotate around an axis, and one end of the rod magnet contacts the center of the side surface of the rod magnet, and the other end is one end of the rod magnet shaft. Is in contact with. The galvanometer was used to observe the induced current generated in the stationary wire. On the contrary, an external electromotive force was applied to the wire and a direct current was applied to the bar magnet to observe the rotation of the bar magnet. However, this experimental method had the following drawbacks. (A) Non-conductive magnets such as ferrite magnets cannot be used. (B) Bar magnets are usually thin, and the phenomenon does not appear significantly. (C) When a sufficient current is applied to the bar magnet to cause it to rotate, the heat generation is intense. (D) It is necessary to process the bar magnet so that the rotary shaft is provided. Due to the above difficulties, an experimental device for teaching tools that can be used easily has not been realized.

[0003]

[Problems to be solved by the device]

 Except for its drawbacks, the present proposal requires processing on non-conductive magnets such as ferrite magnets, magnets of any material, and circular magnets with a hole for passing the shaft rod in the center. In addition, the magnet itself does not flow an electric current and does not generate heat, and it provides an experimental device for a tool that observes the phenomenon by rotating the magnet with a direct current, which is a unipolar induction phenomenon and its opposite phenomenon. is there.

[0004]

[Means for Solving the Problems]

 By utilizing the fact that the same monopole induction phenomenon occurs not only in the magnet itself but also in the conductor fixed to the magnet, the conductor plate fixed to the magnet is used as the current path without passing the current through the magnet itself. I was conceived that the phenomenon could be easily caused.

Now, the means for solving the problem will be described with reference to the drawings. (A) The conductor shaft 1 can be provided by passing through the center of the conductor disc 1 and being vertically fixed to the conductor disc 1. (B) The circular magnets 3 are fixed to both surfaces of the conductor disk 1 with the conductor shaft 2 as the center and the polarities thereof are parallel to the conductor shaft 2. (C) A conductor bearing 6 and a bearing 7 that support the conductor shaft 2 are provided. (D) A conductor which is insulated and fixed from other parts so that the conductor disc 1 to which the circular magnet 3 is fixed is slid around the conductor disc 1 when the conductor disc 1 is rotated around the conductor shaft 2. Set contact 5. Here, the circular magnet 3 may be fixed to only one surface of the conductor disc 1, or a plurality of circular magnets may be stacked on one surface or both surfaces. The bearing 7 may also be a conductor bearing, and current may flow from both bearings. Good.

[0006]

[Action]

 Since the present invention has the structure as described above, when it is used, a direct current is passed between the conductor shaft rod 2 and the conductor contact 5 through the electrode terminal 8 to rotate the circular magnet 3. On the contrary, by rotating the circular magnet 3, the induced electromotive force generated between the electrode terminals 8 can be observed with a galvanometer.

[0007]

【Example】

 In implementing the present invention, the following can be done. (A) The circular magnet 3 is fixed to one side of the conductor disc 1. (B) A plurality of circular magnets 3 are superposed on both sides or one side of the conductor disc 1 and fixed. (C) The bearing 7 is used as a conductor bearing and is connected to the electrode terminal 8 common to the conductor bearing 6.

[0008]

[Effect of the device]

 Therefore, it is possible to easily observe the monopolar induction phenomenon using a circular magnet regardless of the material of the magnet. On the contrary, the magnet can be rotated by the reverse phenomenon of the unipolar induction without flowing a direct current to the magnet itself.

[Brief description of drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is a partial sectional view of the present invention.

FIG. 3 is a perspective view in which the circular magnet of the present invention is fixed to one side of a conductor disc.

FIG. 4 is a perspective view showing a plurality of circular magnets of the present invention.

FIG. 5 is a perspective view in which the bearing of the present invention is used as both conductors and connected to the electrodes.

[Explanation of symbols]

 1 is a conductor disc 2 is a conductor shaft rod 3 is a circular magnet 4 is an insulator support 5 is a conductor contact 6 is a conductor bearing 7 is a bearing 8 is an electrode terminal 9 is an insulation support plate 10 is a contact support rod

Claims (4)

[Scope of utility model registration request] (A) A conductor shaft rod (2) is provided through the center of the conductor disc (1) and fixed vertically to the conductor disc (1). (B) The circular magnets 3 are fixed to both surfaces of the conductor disc 1 so that the polarities are parallel to the conductor shaft 2 about the conductor shaft 2. (C) A conductor bearing 6 and a bearing 7 that support the conductor shaft 2 are provided. (D) Conductor contact fixedly insulated from other parts so as to slide around the circumference of the conductor disc 1 when the conductor disc 1 to which the circular magnet 3 is fixed is rotated around the conductor shaft rod 2. 5 is provided. Single-pole induction rotation tester configured as described above 2. A unipolar induction rotation experimental device according to claim 1, wherein a circular magnet 3 is fixed to one side of a conductor disk 1. 3. A unipolar induction rotating experimental device according to claim 1, wherein a plurality of circular magnets 3 are superposed and fixed on both sides or one side of the conductor disc 1. 4. The unipolar induction rotating experimental device according to claim 1, wherein the bearing 7 is a conductor bearing and is connected to an electrode terminal 8 common to the conductor bearing 6.