JPS6297306A - Electromagnet apparatus - Google Patents

Abstract

PURPOSE:To increase the magnetic efficiency by directing one end of the core to between two permanent magnets while connecting the other end to the frame, pivotally supporting the armature at a position on which one end of the core is facing while allowing both ends to face on different magnetic material pieces respectively, and changing the excitation state of the coil so as to allow both ends thereof to alternately approach and be separated from the different magnetic material pieces respectively, thereby reducing the leakage of the magnetic flux. CONSTITUTION:When a current is made to flow through a coil 7 to generate a magnetic flux due to the coil in the direction of an arrow A, thereby magnetizing both ends 9a, 9b of an armature 9 to the S-pole, the armature 9 pivots in the direction of an arrow C owing to the heteropole attraction and homopole repulsion, by which the end 9a is separated from a magnetic material piece 4, and the end 9a abuts on a magnetic material piece 5. When, after pivotation in the direction of the arrow C, a current reverse to the above is made to flow through the coil 7 to generate a magnetic flux due to the coil in the direction of an arrow B, thereby magnetizing both ends 9a, 9b of the armature 9 to the N-pole, the armature 9 pivots in the direction of an arrow D, by which the end 9b is separated from the magnetic material piece 5, and the end 9a abuts on the magnetic material piece 4. By changing the excitation state of the coil 7, the armature 9 thus pivots in the forward and backward directions. And both ends 9a, 9b are allowed to alternately approach and to be separated from the different magnetic material pieces 4, 5 respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an electromagnet device used for opening and closing contacts of a polarized relay.

[Background technology]

Conventional electromagnetic devices suffer from a lot of magnetic flux leakage.

Therefore, the magnetic efficiency was poor. Moreover, if this is used in a polarized relay and devices that are easily affected by magnetism, such as other polarized relays, are placed in close proximity, the leakage of magnetic flux in the electromagnetic device will adversely affect these devices, resulting in The dynamic voltage and open circuit voltage were changed significantly.

[Purpose of the invention]

In view of the above circumstances, it is an object of the present invention to provide an electromagnetic device with less leakage of magnetic flux. Two permanent magnets each having a piece attached thereto are inscribed in a frame forming a magnetic path so that their polarities are opposite to each other, and an iron core around which a coil is wound and an armature are arranged within the frame. , the iron core has one end facing between the two permanent magnets and the other end connected to the frame, and the armature is pivoted at a position where one end of the iron core faces, and both ends are oriented between the two permanent magnets. Each of the coils faces the magnetic material pieces, and by changing the excitation state of the coil, it rotates in forward and reverse directions, so that its both ends are alternately approached and separated from the different magnetic material pieces. The gist is the electromagnetic device.

Hereinafter, one embodiment of this will be explained in detail with reference to the accompanying drawings.

As shown in FIG. 1, this electromagnetic device includes a rectangular frame l that serves as a magnetic path. Two permanent magnets 2 and 3 are inscribed in one side la of the frame 1 so that their polarities are opposite to each other. That is, the permanent magnet 2 has its north pole directed toward one side 1a of the frame, and the permanent magnet 3 has its south pole directed toward one side 1a of the frame. A magnetic piece 4.5 is attached to one end of the two permanent magnets 2.3 in the magnetization direction (the side opposite to the side inscribed in one side of the frame). An iron core 8 around which a coil 7 is wound through a coil frame 6 is disposed within the frame 1 . One end 8a of the iron core is
It has a chevron-shaped point and is oriented between two permanent magnets 2.3. At the same time, the other end 8b of the iron core 8 is connected to the opposite side 1b of one side 1a of the frame l.

Further, a rod-shaped armature 9 is also arranged within the frame 1.

One side of the central portion of the armature 9 is recessed. The tip 8a, which is one end of the iron core, enters this recess, and the armature 9 becomes
It is pivotally supported by one end 8a of the iron core at a position where one end 8a of the iron core faces. In this way, one end of the iron core 8 is pointed,
If the armature 9 is pivoted by fitting the recess formed on one side of the armature 9 into the tip 8a, the pivoting state is likely to be stabilized. In this embodiment, the armature and one end of the iron core are in contact with each other, and the armature is pivotally supported by one end of the iron core, but the armature and one end of the iron core are simply connected magnetically. The poles may be supported by separate parts. However, if this embodiment is used, there is no need for a separate part to support the armature, so
It can be constructed at low cost. Both ends 9a of the armature 9,
9b faces different magnetic pieces 4.5.

That is, the end 9a faces the magnetic piece 4, and the end 9b faces the magnetic piece 5.

This electromagnet device is constructed as described above and operates as described below.

From the state shown in Fig. 1, a current is applied to the coil 7, and as shown in the figure,
By generating magnetic flux by the coil in the direction of arrow A, the armature 9
When both ends 9a and 9b are magnetized to the S pole, the armature 9 rotates in the direction of arrow C in the figure due to different polarity attraction and same polar repulsion, and the end 9a is separated from the magnetic piece 4. , the end portion 9b contacts the magnetic piece 5. After rotating in the direction of arrow C, a current is applied to the coil 7 in the opposite direction to the previous direction, and a magnetic flux is generated by the coil in the direction of arrow B in the figure, thereby turning both ends 9a and 9b of the armature 9 into N poles. When magnetized, the armature 9 becomes
In the figure, it rotates in the direction of the arrow, the end 9b is separated from the magnetic piece 5, and the end 9a comes into contact with the magnetic piece 4, resulting in the state shown in FIG. In this way, the armature 9 rotates in the forward and reverse directions by changing the excitation state of the coil 7, and both ends 9a and 9b are alternately approached and separated from different magnetic pieces 4 and 5, respectively. It has become so.

As we have seen above, this electromagnetic device is entirely surrounded by a frame 1 that serves as a magnetic path, and two permanent magnets 2 and 3 are placed within the frame L.
Each component constituting the electromagnet device, such as the iron core 8 around which the coil 7 is wound and the armature 9, is arranged. Therefore, leakage of magnetic flux is reduced.

The electromagnet device according to the present invention is not limited to the above embodiment.

〔Effect of the invention〕

As described above, in the electromagnet device according to the present invention, two permanent magnets each having a magnetic material piece attached to one end in the magnetization direction are placed in a frame forming a magnetic path so that their polarities are opposite to each other. An iron core and an armature are arranged in contact with each other and have a coil wound inside the frame, and the iron core has one end directed between the two permanent magnets and the other end connected to the frame. , the armature is pivoted at a position where one end of the iron core faces, and has both ends facing the different pieces of magnetic material, and can be rotated in forward and reverse directions by changing the excitation state of the coil. However, both ends thereof are alternately approached and separated from the different pieces of magnetic material. In this way, in this invention, each component constituting the electromagnet device is arranged within a frame that forms a magnetic path, so leakage of magnetic flux is reduced, and therefore, the electromagnet device has high magnetic efficiency. becomes possible. Moreover, since leakage of magnetic flux is reduced, even if this is used in a polarized relay and devices that are easily affected by magnetism, such as other polarized relays, are placed in close proximity, these devices will not be adversely affected.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view showing an embodiment of an electromagnet device according to the present invention. 1... Frame 2, 3... Permanent magnet 4.5... Magnetic piece 7... Coil 8... Iron core 8a... One end of iron core (point of iron core) 8b... Iron core Other end 9...
Armature 9a, 9b...Both ends of the armature

Claims (2)

[Claims] (1) Two permanent magnets each having a piece of magnetic material attached to one end in the magnetization direction are inscribed in a frame forming a magnetic path so that the polarities are opposite to each other, and a coil is wound within the frame. An iron core and an armature are arranged, the iron core has one end facing between the two permanent magnets and the other end connected to the frame, and the armature is located at a position where one end of the iron core faces. It is pivoted and has both ends facing the different pieces of magnetic material, and by changing the excitation state of the coil, it rotates in forward and reverse directions, and both ends thereof face the different pieces of magnetic material. An electromagnetic device that is designed to be alternately approached and separated. (2) A patent in which one end of the iron core is pointed, and a recess formed on one side of the armature is fitted into this pointed end, so that the armature is pivoted at a position facing the one end of the iron core. An electromagnetic device according to claim 1.