JPS5874017A - Polar electromagnet device - Google Patents

Abstract

PURPOSE:To maintain the sensibility of a polar electrical magnet device, by a method wherein the magnet device is consisted of an upper and a lower permanent magnets, and an upper and a lower relay yokes that cnnect the upper and the lower permanent magnets and an armature. CONSTITUTION:The magnetic flux Y of a permanent magnets 10 and 11 make an armature 5 short-circuit, and flow towards the armature 5, the right side element 4, the upper element 2, and the left side element 3 of a yoke 1. The magnetic flux X of a coil 6 flows towards the armature 5, the right side element 4, the upper element 2, and the left side element 3 of the yoke 1. Thus, when both magnetic fluxes X and Y flow in the same direction, one is placed upon another, and when they flow in the different directions respectively, they repell to each other. The armature, thereby, moves horizontally to the right, and sticked on the right side element 4 of the yoke 1. If the direction of the coil current flow is changed, the armature moves to the left, and the state is kept. Thus, the attracting force of the coil 16 is not attenuated, protecting the polar electromagnet device from loss of its sensitivity.

Description

Detailed Description of the Invention (Field of Application) The present invention is a polarized type in which a permanent magnet is interposed in a magnetic circuit, and the magnetomotive force of the coil is superimposed on the magnetic flux of the permanent magnet, and the magnetomotive force of the coil is attenuated to move the armature horizontally back and forth. Relating to electromagnetic devices.

(Problems with the Prior Art) Generally, in a polarized electromagnet device, the center of an armature is supported by a round shaft, and the armature swings so that the two contact surfaces of the yoke come into contact with each other at diagonal positions.

This drawback is that unless the three points of the armature's diagonal armature surfaces and the central round shaft are precisely aligned in terms of dimensional accuracy, only one armature surface will come into contact with the armature, which may cause sagging.

Therefore, there is a model known as Japanese Patent Publication No. 55-41005, in which the armature is horizontally reciprocated and the central round shaft is eliminated.

That is, as shown in Fig. 3, the upper Katakuchi, Lieutenant Colonel C, and lower Kata No. 2 form a Σ-type yoke, and the Lieutenant Colonel C is equipped with a coil ho, and each of the Kataku, Ha, and No. 2 pieces is connected to one armature lE permanent magnet. face to face i
As a result, the magnetic flux direction to this permanent magnet is Y, and the coil ho is in the magnetomotive east direction X.

Therefore, both magnetic flux directions X and Y in the gap between the first half, first half, second half and the permanent magnet are opposite to each other, that is, they repel each other, and horizontally shift toward the permanent magnet as the armature in the direction of the arrow 2.

Subsequently, when the magnetic flux direction X of the coil ho is made to flow in the opposite direction, it becomes superimposed in the same direction as the magnetic flux Y to the permanent magnet, and is attracted to the permanent magnet which is the armature.

By the way, in this known example, the magnetomotive flux of the coil passes through the inside of the permanent magnet, so a general yoke (
Iron): Larger magnetic resistance than ζ (and poor sensitivity).

(Purpose) The present invention has been made in view of the above points, namely, to prevent the magnetomotive flux of the coil from passing through the permanent magnet and acting as an attractive force on the armature in horizontal reciprocating movement, thereby This is to ensure that the sensitivity of the electromagnet device is not impaired.

The present invention will be explained below based on the drawings showing one embodiment of the invention. Reference numeral 1 indicates a U-shaped yoke, an upper piece 2, left and right side pieces 3.
It has become. Reference numeral 5 denotes a horizontal reciprocating plunger type armature, whose both end surfaces 51.degree. 5b face and separate from the left and right side pieces 3.4.

6 is a coil, and the armature 6 is inserted into the inner hole 8 of the winding frame 7. 9 is a guide for the inner hole 8, 10.11 is a permanent magnet,
located above and below the end of the armature 5, and one pole S of each
faces the left side piece 3 of the U-shaped eye 1. 12.1
A relay yoke 3 faces the other pole N of the permanent magnets 10 and 11, and is held between the winding frame 7 and the winding frame 7. Thus, this relay yoke 12.13 forms a magnetic path with the permanent magnet 10.11, the armature 5, and the left side piece 4 of the U-shaped cluster 1. That is, the armature 5 and the permanent magnets 10 and 11 are magnetically coupled. In addition, in FIG. 2, upper and lower permanent magnets 10 and 11 and relay yokes 12 and 13 are arranged on the left and right sides, respectively.

(Operation) Next, to explain the present invention in detail, in FIG.
is the magnetic flux direction of the permanent magnet 10.11, and the upper permanent magnet 10
The magnetic flux short-circuits armature 5, and at the same time clouds and armature 5, U-shaped 8! ! Right side piece 4, top piece 2, left side piece 3 of yoke 1
At the same time, a similar flow occurs for the downward permanent magnet 11.

・:'1 Next, the magnetic flux of the coil 6 is shown by the solid line X. First, the magnetic flux of the coil 6,
It reaches the armature 5, the right side piece 4, the upper piece 2, and the left side piece 3 of the U-shaped yoke 1.

Therefore, when the magnetic flux directions X and Y are the same, they act as cylinder walls, and when they are opposite, they repel, so in Fig. 1, the armature 5 moves horizontally to the right and reaches the right side 4 of the U-shaped am-ri 1. Adsorb.

If you change the current direction of coil 6, it will shift to the left direction,
This state is maintained by the magnetic flux of permanent magnets io and ti.

(Effect) As described above, the present invention provides the left and right side pieces 3.4 of the U-shaped 1-ri 1.
A horizontally reciprocating armature 5 is positioned in between, and its both end surfaces 5 a e 5 b are opposed and separated, and this - right side piece 3 and upper and lower relay days - 12. ．． Upper and lower permanent magnets 10.11 are interposed between the armature 5 and the upper and lower permanent magnets 10.13 through the upper and lower relay yokes 12.13.
11, the magnetic flux from the coil 6 does not flow to the relay 1, and therefore the permanent magnet 10.
The magnetic flux of the coil 6 does not pass through the armature 1, and the attractive force of the coil 6 that causes the armature 5 to horizontally reciprocate is not attenuated, so there is an effect that the sensitivity is not impaired.

[Brief explanation of drawings]

1 and 2 of the drawings show one embodiment of the present invention.
The figure is a sectional view, Figure 2 is a sectional view of an interesting example, and Figure 13 is a known coincidence! be. 1... U-shaped yoke, 2... Upper piece, 3. ．． 4...
Left and right side pieces, 5... armature, 6... coil, 10.
11...Permanent, magnet, 12.13...Relay yoke. Patent applicant Matsushita Electric Works Co., Ltd. Patent attorney Toshimaru Takemoto (and 2 others) Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] U-shaped m1i-rito consisting of the top piece, left and right side pieces, and U-shaped a
A plunger type armature in which the inner surfaces of m-shaped left and right side pieces face each other and separate from each other, a coil pushed through so that the armature moves back and forth horizontally, and a plunger type armature located above and below the end of the armature, and One side piece of the U-shaped mw-yu and its m-
A polarized electromagnet device characterized by upper and lower permanent magnets facing each other, and upper and lower relay eyes that magnetically connect the upper and lower permanent magnets and an armature.