JPH0119306Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to an electromagnetic device used for opening and closing contacts of a polarized relay.

[Background technology] Conventionally, electromagnetic devices used in polarized relays are
A permanent magnet block and an electromagnetic block were stacked vertically. For this reason, it is difficult to reduce the thickness of the relay, and when configured as a polarized relay, it has been impossible to obtain an ultra-thin relay.

Therefore, as shown in Figure 5, an electromagnetic device was developed that was designed to be thinner. As shown in the figure, this electromagnet device includes an electromagnet block 51 and a permanent magnet block 52. Electromagnetic block 5
1 has an iron core 54 and a yoke 55 around which a coil 53 is wound. By bending a single plate, the yoke 55 has one rising portion 57 at one end of the parallel portion 56 and one rising portion 57 at the other end.
two rising parts 58, 58 extending in the same direction as
are formed at intervals. One plate is
The fold line 62 between the parallel portion 56 and one rising portion 57 and the fold lines 63, 63 between the parallel portion 56 and the two rising portions 58, 58 are bent so as to be perpendicular to each other. iron core 54
connects one end 54a of the yoke 55 to the space 5 of the yoke 55.
The other end 54b is connected to the one rising portion 57 so as to face the other end 54b. The permanent magnet block 52 is formed by two magnetic pieces 60, 60 sandwiching a permanent magnet 61 from both ends in the direction of magnetization. The electromagnetic block 51 and the permanent magnet block 52 are arranged such that two magnetic pieces 60, 60 are inserted into the gap 59 and one end 54a of the iron core is inserted between these two magnetic pieces 60, 60. Combined with that. This electromagnet device is constructed as described above, and by changing the direction of energization to the coil 53, the permanent magnet block 52 can be moved forward or backward in the directions of arrows G and H in the figure. There is.

However, when the plate used for the yoke is made by rolling and is bent along the rolling direction, there is a drawback that cracks are likely to occur at the bent portion. As described above, the fold line 62 between the parallel portion 56 and one rising portion 57 and the fold lines 63, 63 between the parallel portion 56 and the two rising portions 58, 58 are orthogonal to each other. One side is along the rolling direction. As a result, cracks occur in the portions bent along the rolling direction, and the magnetic resistance at those portions increases, changing the magnetic properties.
In this way, the magnetic properties of this electromagnet device were not stable.

[Purpose of invention]

In view of the above circumstances, the object of this invention is to provide an electromagnet device that is thin and has stable magnetic properties.

[Disclosure of invention]

In order to achieve the above object, this invention has the following features: By bending a single plate made by rolling, one rising part is formed at one end of the parallel part,
At the other end, there is a yoke formed with two spaced apart rising parts extending in the same direction as the one rising part, and the iron core around which the coil is wound has one end directed toward the spaced part of the yoke. and an electromagnetic block whose other end is connected to the one rising portion, and a permanent magnet block formed by two pieces of magnetic material sandwiching a permanent magnet from both ends in the direction of magnetization, and the above-mentioned interval is An electromagnet device in which both blocks are combined in such a way that the two magnetic pieces are inserted into the block and one end of the iron core is inserted between the two magnetic pieces, and the fold line between the parallel part and the two rising parts are parallel to a direction perpendicular to the rolling direction of the one plate body, respectively. The gist of the electromagnet device is an electromagnet device characterized in that the one plate body is bent.

This will be explained in detail below based on the drawings showing one embodiment thereof.

As shown in FIGS. 1 to 3, this electromagnet device includes an electromagnet block 1 and a permanent magnet block 2. As shown in FIGS. The electromagnetic block 1 has an iron core 4 around which a coil 3 is wound, and a yoke 5. The yoke 5 is formed by bending a single plate, and has one rising part 8 at one end of the parallel part 7 and the above-mentioned 1 part at the other end.
Two rising portions 9, 9 extending in the same direction as the single rising portion 8 are formed with an interval between them.
One plate 6 is made by rolling, and the directions of arrows C and D shown in FIG. 3 are the rolling directions. One plate body 6 has parallel parts 7 and 1
The fold line 10 between the rising parts 8 and the parallel part 7
and the fold 1 between the two rising parts 9, 9
1 and 11 are bent so as to be parallel to the direction perpendicular to the rolling direction of one plate 6, respectively. That is, one plate 6 has folds 10 and 11 along the arrows E and 11 shown in FIG.
It is bent in the F direction to form a yoke 5.
It is desirable that the single plate 6 is processed in advance into a state in which the yoke 5 is expanded. Iron core 4 is
One end 4a thereof is directed toward the spaced portion 12 of the yoke 5, and the other end 4b is connected to one rising portion 8 of the yoke 5. Although not shown, the coil 3 is normally wound around the iron core 4 via a coil frame. When the coil 3 is energized, the one end 4a of the iron core and the two rising portions 9, 9 take on different polarities.

The permanent magnet block 2 includes two magnetic pieces 13,
13 sandwich a permanent magnet 14 from both ends in the direction of magnetization.

The electromagnetic block 1 and the permanent magnet block 2 are constructed such that two magnetic pieces 13, 13 are inserted into the gap 12, and one end 4a of the iron core is inserted between these two magnetic pieces 13, 13. Combined with that. This electromagnet device is constructed as described above, and by changing the direction of energization to the coil 3, the permanent magnet block 2 can be moved forward or backward in the directions of arrows A and B shown in FIG. ing. In this electromagnet device, permanent magnet block 2
When the permanent magnet block 2 is in both states after forward and reverse movement, when the current to the coil 3 is cut off, the permanent magnet block 2 is maintained in each state. That is,
This electromagnet device is a latching type electromagnet device.

As seen above, in this electromagnet device, the electromagnet block 1 and the permanent magnet block 2 have one end 4a of the iron core inserted between the two magnetic pieces 13, 13, and two Magnetic piece 1
3 and 13 are inserted. As described above, in this electromagnet device, the permanent magnet block 2 is arranged in the axial direction of the iron core 4 of the electromagnet block 1, and therefore, unlike the electromagnet device, the electromagnet blocks and the permanent magnet blocks cannot be stacked vertically. This makes it possible to make the device thinner. Further, the yoke 5 has one rising portion 8 at one end of the parallel portion, and two rising portions 9, 9 extending in the same direction as the one rising portion 8 at the other end, spaced apart from each other. One plate body 6 made by rolling has a fold line 10 between a parallel part 7 and one rising part 8, and a fold line 11 between the parallel part 7 and two rising parts 9, 9. The plates 6 are bent so as to be parallel to the direction perpendicular to the rolling direction of the plate 6. Since one plate 6 is not bent along the rolling direction, cracks do not occur in the bent portion of the yoke 5, and the magnetic properties of the yoke are stabilized. Therefore, this electromagnet device is also capable of stabilizing the magnetic properties.

Next, another example will be shown.

As shown in FIG. 4, in this electromagnet device, one of the two rising portions 9' has a tip portion (indicated by a chain line in the figure) cut away. As a result, one of the two rising portions 9' is shorter than the other 9. The rest is exactly the same as the previous embodiment. Since one of the two rising parts 9' is shorter than the other 9, this electromagnetic device has the following characteristics when no current is passed through the coil 3:
The permanent magnet block 2 is stabilized in one state after moving forward and backward (the state after moving in the direction of arrow A' in the figure). When the coil 3 is energized from this state, the permanent magnet block 2 moves as shown by the arrow in the figure.
Move in direction B′. In this way, this electromagnet device is a single stable type electromagnet device. In this embodiment, single stabilization is achieved by making one of the two rising portions shorter than the other, but the method of achieving single stability is not limited to this.

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

[Effect of idea]

As described above, in the electromagnet device according to this invention, two pieces of magnetic material are inserted between the electromagnet block and the permanent magnet block, and an iron core is inserted between these two pieces of magnetic material. They are assembled so that one end is inserted. In this way, in the electromagnet device according to this invention, the permanent magnet block is arranged in the axial direction of the iron core of the electromagnet block, so that the electromagnet block and the permanent magnet block are not stacked vertically like in the conventional electromagnet device. There is no need for this, making it possible to make the device thinner. Also,
The direction in which a plate made by rolling is such that the fold between the parallel part and one rising part and the fold between the parallel part and two rising parts are perpendicular to the rolling direction of one plate. They are each bent parallel to each other to form a yoke. 1
Since the plate is not bent along the rolling direction, cracks do not occur in the bent portion of the yoke, and the magnetic properties of the yoke are stabilized. Therefore, this electromagnet device is also capable of stabilizing the magnetic properties.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the electromagnet device according to this invention, Fig. 2 is an exploded perspective view of the same, and Fig. 3 is a state of one plate used in the above yoke before being bent. A perspective view showing
FIG. 4 is a perspective view showing another embodiment, and FIG. 5 is a perspective view showing a conventional electromagnet device. 1...Electromagnetic block, 2...Permanent magnet block, 3...Coil, 4...Iron core, 4a...One end of the iron core, 4b...Other end of the iron core, 5...Yoke, 6...
...1 plate, 7...parallel part, 8...1 rising part, 9,9'...2 rising parts, 1
0...Fold line between the parallel part and one rising part, 11...Fold line between the parallel part and two rising parts, 12...Spaced part, 13...Magnetic material piece, 14...Permanent magnet .

Claims (1)

[Claims for Utility Model Registration] (1) By bending a plate made by rolling, one rising part is formed at one end of the parallel part, and the same as the above one rising part is formed at the other end. Two rising parts extending in the direction are formed with a gap between them to form a yoke, and the iron core around which the coil is wound has one end facing the spaced part of the yoke, and the other end facing the one rising part. an electromagnetic block connected to the part, and a permanent magnet block formed by two magnetic pieces sandwiching a permanent magnet from both ends in the magnetization direction, and the two magnetic pieces are inserted into the spaced part. The electromagnetic device is an electromagnetic device in which both blocks are combined in such a way that one end of the iron core is inserted between the two magnetic material pieces, and the magnetic body is inserted between the parallel part and the one rising part. The fold, the parallel part, and the 2
An electromagnet device characterized in that the one plate is bent so that the folds between the two rising parts are parallel to a direction perpendicular to the rolling direction of the one plate. . (2) The electromagnet device according to claim 1, wherein one of the two rising portions is shorter than the other.