JPS6014491B2 - electromagnetic drive equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electromagnetic drive device that obtains mechanical driving force by passing a current through a coil.

Conventional electromagnetic drive equipment, such as electromagnetic IJ rays, is configured to utilize only magnetic attraction, and speakers and meters are configured to use low-resolution power. Since it uses only force, and the above-mentioned deviation only uses one side of the force obtained by passing current through the coil, there is a problem of poor electromagnetic drive efficiency. Ta. The present invention has been provided in view of the above-mentioned points, and an object of the present invention is to provide an electromagnetic drive device that can simultaneously utilize both magnetic attraction force and Laurent force, thereby improving electromagnetic drive efficiency. The purpose is to

An embodiment of the present invention will be described in detail below with reference to the drawings.

1 and 2 show an embodiment of the present invention, in which an armature 2 formed in the shape of an oblate character is supported so as to be movable in the left and right directions in FIG. Part 2
A coil 1 is wound around a, and left and right vertical pieces 2b, 2b
The outer surface of the coil 1 becomes the magnetic pole surface when the coil 1 is excited. A pair of permanent magnets 3, 3 are arranged on both sides of the coil 1 of the armature 2 so that the sides facing the coil 1 have magnetic pole faces of the same polarity (in the illustrated example, N pole). Reference numerals 5 and 6 denote first and second yokes, each having a substantially U-shape, in which the lengths of the chest pieces 5a, 5a and 6a, 6a are different from each other, and these first and second yokes Reference numerals 5 and 6 are arranged so as to surround the left and right halves of the block consisting of the armature 2 and the permanent magnet 3, and the first yoke 5 has long leg parts 5a and 5a. Permanent magnet 3,3
The second yoke 6 covers a wide area with respect to the magnetic pole surface on the anti-coil 1 side (the S pole magnetic pole surface in the illustrated example), and the second yoke 6 has a short leg portion 6.
a, 6a, and are curved in a narrow area with respect to the magnetic pole faces of the permanent magnets 3, 3 on the side opposite to the coil 1.

Further, these first and second yokes 6, 6 have their inner pieces 5b.
, 6b are the vertical pieces 2b, 2b of the armature 2.
The leg portions 6a, 6a of both yokes 5, 6 face each other with a gap 4 in between. Thus, in the above embodiment, since the area of the bushing surface of the first yoke 5 with respect to the permanent magnet 3 is larger than that of the second yoke 6 under normal conditions, the magnetic flux of the permanent magnet 3 as shown by the solid line arrow is A large amount of water flows toward the first yoke 5, and the armature 2 is attracted and stably held by the first yoke 5 on the left side in the figure.

When current is applied to the coil 1, the magnetic flux of the permanent magnet 3 perpendicular to the coil 1 causes a Loren force according to Fleming's left hand rule to move the armature 2 to the right.
At the same time, magnetic poles with the polarity shown in the figure are generated at both ends of the armature 2 [vertical pieces 2b, 2b] due to the magnetomotive force caused by the current flowing through the coil, and the magnetic flux as shown by the broken line arrow in the figure is transmitted to the armature. 2 and the first and second yokes 5,
It flows to 6. Therefore, on the opposing magnetic pole surface between the second yoke 6 and the armature 2, the magnetic flux due to the excitation of the coil and the magnetic flux due to the permanent magnet 3 are added, and on the other hand, on the opposing magnetic pole surface between the first yoke 5 and the armature 2, the magnetic flux of the above two is added. The magnetic fluxes cancel each other out, and the armature 2 moves to the right in the figure. After that, when the excitation of the coil 1 is cut off, the armature 2 moves to the left again by the force exerted by the magnetic flux of the permanent magnet 3, and becomes stable in that state. In the present invention, the same effect can be obtained even if the electromagnetic drive device shown in FIG. 2 is formed as a rotating body with the center of rotation at the marker line of the coil tube.

Since the present invention is configured as described above, it has a relatively simple structure and can obtain both magnetic attraction force and Lorento force at the same time, thus reducing the driving force of a large armature. This has the effect of significantly improving electromagnetic drive efficiency.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, and FIG. 2 is an explanatory diagram of the same operation, where 1 is a coil, 2 is an armature, 3 is a permanent magnet, 4 is a gap, 5 is a first yoke, and 6 is the second yoke. Figure 1 Figure 2

Claims (1)

[Claims] 1. An armature that is movable in the left and right direction and has a coil wound around it, a permanent magnet that is magnetized in a direction perpendicular to the coil tube of the coil and arranged around the armature, and First and second yokes having inner surfaces of the end portions in contact with the magnetic pole surface on the side that does not face the coil at different wide and narrow areas, and these end faces face each other through a gap, and have opposing surfaces of the armature. An electromagnetic drive device characterized by comprising: