JPS6051446A - Magnet motor - Google Patents

Abstract

PURPOSE:To obtain a magnet motor which can provide larger torque by several multiples of 10% as compared with a conventional motor by approaching the ends of beveled members of an armature to each other as near as possible. CONSTITUTION:A rotor 3 is provided with 3 plate-shaped armatures 32-34 extended in the inner wall of a cylinder at an angle of 120 deg. from the axis of a cylinder 31. One armature is wound with a winding 35 in the same direction, and the both ends of the winding are connected to a commutator. S-pole and N-pole permanent magnets 1, 2 are mounted oppositely at the prescribed interval in a direction perpendicular to the section of the rotor 3 with the rotor 3 at the intermediate. Thus, the motor sold in the market is revised to extend the ends of beveled members as long as possible to approach to each other is raised in the torque by approx. 30% as compared with the motor before the modification.

Description

[Detailed description of the invention] The present invention relates to a magnet motor.

The conventional magnet motor has 12
Three armatures AI + A extending in different directions by 0°
21 A rotor with winding B wound around A3 is installed between two field magnets 1.2 of S and N poles, and current is passed through the winding to rotate the rotor.

In other words, at the tips of the plate-like members B1+ 821 and B3, umbrella parts CI+C2+c3 are provided, which correspond to the cylindrical wall of the cylinder whose axis is the line where these plate-like members intersect, and each umbrella part maintains an equidistant interval. They are each independent at the tip of the plate-like member.

It is well known that windings d wound in the same direction are wound in coils around these three plate-shaped members and connected through the respective coil ends and commutator pieces (not shown) to form a Δ-connection motor and a Y-connection motor. It is as follows.

The commutator is connected to the power source and functions to switch the positive and negative electrodes of the armature.

Then, permanent magnets 1 and 2 having S and N poles are placed facing each other at a constant interval in the middle of the rotor in a direction perpendicular to the cross section of the rotor configured as described above.

A current is passed through the commutator of the motor configured in this manner to rotate the rotor.

The present invention has been made regarding such a motor,
The magnetic motor kJ is able to obtain torque several times larger than conventional motors through extremely simple structural improvements! The entire purpose is to serve

Next, the Ten7i of the present invention! Example i will be explained based on FIG. 2, but first the configuration of the motor of the present invention will be explained.

The motor of the present invention is composed of a permanent magnet 1.2 with two S and N poles and a rotor 3.

<A> The rotor 3 is a hollow cylinder, and three plate-shaped armatures 32 to 34 are provided at an angle of 120 degrees from the shaft of the cylinder 31 until they touch the inner wall of the cylinder.

In other words, the tips of the umbrella parts of the conventional motor described above are fully extended, and each umbrella part faces each other with a small gap between them.

A winding 35 is wound in the same direction on one armature, and both ends of the winding are connected to all commutators, but the above is the same as in a conventional motor.

<Mouth> Permanent magnet with S pole and N pole 1. ．． 2i, they are installed facing each other at a constant interval in the entire middle of the rotor in a direction perpendicular to the cross section of the rotor 3.

This point is also similar to conventional motors.

We compared the torque generated using a motor with a configuration that exceeds the generated torque.

As a result, a commercially available motor was modified to extend the ends of each umbrella part as close as possible to each other, resulting in a motor with about 30% more torque than the motor before the improvement. Understood.

Next, let us consider the principle by which the torque is increased in the motor of the present invention.

A conventional motor has a structure in which a winding wire is wound in a coil around a plate-shaped member, and therefore it is considered to be in the state of a solenoid with an iron core. In this case, when power is supplied, it becomes a bar magnet and a magnetic pole appears at the tip, that is, on the outer circumferential side of the umbrella.

The theory of rotation of a motor is based on Fleming's law, which states that a conductor in a magnetic field is subjected to a force perpendicular to both the magnetic field lines and the conductor current.

However, the present invention has a configuration in which the annular member with high magnetic permeability blocks the lines of magnetic force that enter the conductive portion.

Therefore, Fleming's law cannot explain it.

Therefore, in the present invention, one hypothesis is established as the reason for the rotation, and it is assumed that the force due to this is also applied.

That is, the hypothesis is that the motor is rotated by the attraction and repulsion forces generated between the magnetic poles appearing on the outer peripheral surface of the umbrella and the permanent magnets.

Considering this point, the present invention attempts to bring the umbrella parts closer to each other, thereby increasing the number of magnetic lines of force and strengthening the magnetic poles.

That is, the strength of the magnetic pole is related to the number of turns of the conductor and the magnitude of the current, and the plate-like member increases the number of lines of magnetic force passing through the coil.

Since the strength of the magnetic poles increases as the number of magnetic lines of force increases, the present invention attempts to increase torque through the interaction between the strengthened magnetic poles of the umbrella member and the magnetic field of the magnet.

Next, when rotating the motor of the present invention, the characteristics in - are 4- This will be explained with reference to the drawings while comparing it with a conventional example.

<A> Figure 3 shows a conventional motor with three umbrella parts C1°C.
2 and C3 are each n independently magnetized by power supply.

ing.

In a delta-connected motor, the magnetization state is two north poles and one south pole, or two south poles and one north pole.

The figure shows the magnetization state of two N poles and one S pole, forming two magnetic circuits in the direction of the arrows shown in the figure.

A circuit consisting of one circuit C2 and C3 is considered to have the characteristics of a solenoid P with an iron core. That is, it is thought that a deformed magnet is formed, and the polarities of N and S appear at the tips of C3 and C2.

<Mouth> On the other hand, in the present invention, as shown in FIG. 4, the umbrella parts 03+02 and 01. C2 forms two magnetic circuits as in Fig. 3. However, in particular the two magnetic circuits formed by the inserts T have only a few magnetic slits. The term "magnetic slit" as used herein does not mean a mere gap, but means that it is magnetically blocked.

Basically, it forms an annular shape called a toroid. In this case, the magnetic flux density within the core increases further compared to FIG. That is, the number of magnetic lines of force increases, and since the toroid has a specially deformed iron core, the umbrella part O1,
At the tip of C2+ 03, even stronger magnetization is obtained compared to FIG. 3 n2.

Next, if the space S between the umbrella parts is narrower, a larger rotational force can be obtained with the same current value.1. The basis for this will be explained using a calculation formula. (
Example: Houka Publishing University Course Physics Essay Revised Edition Vol. 2, pp. 142-144) "When a long iron core is bent into an annular shape and the tip is completely closed and has a gap 1" (No. 7 figure).

Assuming that [air gap width 1] is small and magnetic leakage can be ignored, and the magnetic flux density in the iron core is B, then vertical × J + 1 molar v−nT μ /? 0 n I= ”' (1+ttr 1 ) tS μ: Magnetic permeability of the iron core (= μr・ILO) t゛ Core length φ, magnetic flux Even if the air gap is small like this, if the tip is completely closed ( b=o), the magnetomotive force nT due to the air gap is (1
+μr T) increases twice.

For example, even if there is a gap of 1/1000, the required magnetomotive force will be doubled, and a large amount of magnetomotive force will be consumed.

Therefore, b should be O in order to obtain a large magnetomotive force with a relatively small current.

However, in b-0, S and N poles do not occur.

Therefore, in order to generate a pole and obtain a large magnetomotive force, it is necessary to take a value that is the minimum within the processable range and is not zero.

Various methods can be considered for making the conventional independent and continuous umbrella parts.

(a) An annular member R made of a material with excellent magnetic properties such as silicon steel is fitted into the rotor and bonded, and then magnetically divided in the cross-sectional direction at the position of the inter-cap space S between the cap parts. do.

(Fig. 5) (1)) Extend both ends of each umbrella, bring the tips of each umbrella closer together, and connect them with a fitting member T made of a material with high magnetic permeability. (Fig. 6) (c) The inter-umbrella space between each umbrella portion is magnetically connected with a fitting member made of a material with excellent magnetic properties, such as silicon steel, and the fitting member is In the middle or with the fitting member 1
A magnetic slit is provided between the two umbrella parts.

(d) In other words, you can first wind a wire around each umbrella member and then extend each end of the umbrella, or connect the umbrellas with a fitting member with high magnetic permeability depending on the diameter of the winding wire, and then slit the wire at the end. Alternatively, a ring made of silicon steel or the like is fitted around the outer periphery of the cap part around the diameter of the winding wire, the ring and the cap part are glued together, and finally the ring is cut to form a slit.

Other Examples Although a three-pole motor has been described above, the present invention can also be applied to a motor that increases torque by using four permanent magnets, with the N pole being N, S, N, and S. Since the motor of the present invention to which the idea of the above can be applied is as explained above, the following effects can be expected.

<B> Since the ends of the umbrella-shaped members of the electrodes and the grooves are brought close enough to be processed, there is no problem with the flow of the lines of magnetic force between each electrode, and the total number of lines of magnetic force does not decrease. , the magnetic force of the armature poles is strengthened. Therefore, there is no need to increase the strength of the current passed through the conductor or the number of windings on the armature, and it is possible to create a motor with higher torque than conventional motors without using expensive high quality magnets. It has been experimentally confirmed that this can be achieved.

[Brief explanation of the drawing]

Figure 1: Front view of conventional magnet motor, Figure 2:
Front view of the magnet motor of the present invention, 10- Figure 3: An explanatory diagram of lines of magnetic force in a conventional magnet motor, Figure 4: An explanatory diagram of lines of magnetic force in a magnet motor of the present invention, Figures 5 and 6: Other embodiments 7: Explanatory diagram of the long iron core in a bent state, 1.2: Magnet, 3: Rotor,
31: Cylindrical body, 32-34: Armature, 35: Winding, C1-
C3: Umbrella portion B, ~ B3: Plate member, t: Line of magnetic force, S: Space between umbrella portions R; Annular member, T: Inset member Patent applicant Yoshi Fujioka 11- Fig. 1] 2 Fig. 2 31 235 Figure 4

Claims (1)

[Claims] An armature is formed by winding wires around a plurality of laminated iron plates extending the same length with equal dividing angles, and an umbrella portion is formed at the free end of each armature, and each A magnetic motor with the tips of the umbrella parts extended and brought closer to each other.