JPS6116657Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a polarized electromagnet.

Conventionally, as shown in FIG. 1, a coil 31 is wound around the center piece of an E-shaped core 30, while U-shaped armatures 32 are attached to hinge springs 3 at both ends of the core 30.
An electromagnet is provided which is rotatably attached via the armature 3 and is always biased to return the armature 32 in the direction of the arrow by a return spring (not shown).

Then, by energizing the coil 31, a magnetic flux is generated in the iron core 30, and the armature 32 is inserted into the return spring and attracted to the iron core 30, and by stopping the energization to the coil 31, the return spring is released. is adapted to return the amateur 32 in the direction of the arrow.

In the case of this electromagnet, when the coil 31 is energized, the armature 32 must rotate against the return force of the return spring, so as the stroke of the armature 32 increases, the load increases and a large operating power is required. The disadvantage was that it required .

In addition, to ensure reliable operation, during manufacturing,
It was necessary to adjust the load on the return spring, which took time to assemble.

Furthermore, when attaching the armature 32 to the iron core 30, as shown in Fig. 1, various armature installation operations such as pinning the hinge spring 33 and the armature 32, caulking, and bending are required, making the assembly work extremely troublesome. It was becoming.

The present invention was developed in view of the above-mentioned drawbacks of the conventional art.By providing a permanent magnet in place of the return spring in the armature, the armature can be operated with low power consumption, and there is no need for load adjustment.
To provide a polarized electromagnet that eliminates troublesome installation work by joining two armatures at a predetermined angle.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention and its embodiments will be described below with reference to the accompanying drawings.

Figures 2 and 3 show the present invention, in which two armatures 2 and 7 are integrally fixed at a predetermined angle to the end of a flat U-shaped iron core 1 and can swing freely. It is hinged. That is, in the figure, the upper armature 2 has a hinge side made up of a non-magnetic plate 3 made of plastic or the like, and an attraction side made up of two L-shaped iron cores 4 and 5 connected to a permanent magnet 6. ,
In the figure, the armature 7 on the lower surface is constructed with a non-magnetic plate 8 on the hinge side and a single U-shaped iron core 9 on the suction surface side.

In the normal state (when not energized), the armature 2 on the upper surface provided with the permanent magnet 6 is attracted to the iron core 1 by the magnetic flux of the permanent magnet 6, and the permanent magnet 6 is attached to the coil 10 wound around the iron core 1. When a current flows in a direction that cancels the magnetic flux, the magnetic flux of the permanent magnet 6 and the magnetic flux of the iron core 1 repel each other, and the armature 2 on the upper surface moves away from the iron core 1, and the armature 7 on the lower surface is attracted to the iron core 1. Then, when the power supply to the coil 10 is stopped, the armature 2 on the upper surface is attracted to the iron core 1 again by the magnetic flux of the permanent magnet 6.

Therefore, unlike electromagnets that use conventional return springs, there is no increase in load as the armature's operating stroke increases, and the electromagnet can use less operating power. If this is determined, there is no need for load adjustment, and there is no need for manual installation work such as pinning, caulking, and bending, which is required when using a return spring, making assembly easier. ing.

Furthermore, by connecting the armatures 2 and 7 at a predetermined angle, it is possible to arrange, for example, a card or a contact mechanism on both the upper and lower sides of the armatures 2 and 7. The arrangement is easy, the overall structure is thin and compact, and since the rotation angle (stroke) of the armatures 2 and 7 is predetermined by the coupling angle of the armatures 2, the electromagnet has an accurate operating stroke. be able to.

As is clear from the above explanation, according to the present invention, there is no need to operate the armature by penetrating the return spring during operation as in the conventional case, and there is no repulsive force of the armature having a permanent magnet, and there is no permanent magnet. Since the absorbing power of the armature acts additively, the electromagnet can be operated with small power consumption.

Further, there is no need to adjust the load on the return spring as in the conventional case, and no time is required for assembly.

Furthermore, by simply inserting the iron core between two armatures connected at a predetermined angle, one end can be hinged and swinging motion can be achieved. This has the effect of eliminating the need for installation work and simplifying assembly.

Furthermore, if a thin plate-like permanent magnet is used, the overall thickness will not increase, and there is no need to worry about compromising the ability to make the magnet thinner.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a conventional electromagnet, FIG. 2 is a perspective view of a first embodiment of a polarized electromagnet according to the present invention, and FIG. 3 is an enlarged sectional view of the portion taken along the line - in FIG. 1... iron core, 2, 7... amateur, 4, 5...
...Iron piece, 6...Permanent magnet, 10...Coil.

Claims (1)

[Scope of utility model registration request] A coil is wound around the center of a flat U-shaped iron core, and the joint ends of two armatures connected at a predetermined angle are attached to the ends of the iron core, and the iron cores can be freely swung between them. A polarized electromagnet characterized in that at least one of the armatures is supported and at least one of the armatures is divided into two parts, and a permanent magnet is provided in this divided part so that the magnetic pole surface of the permanent magnet is in contact with each armature.