JPH0442884Y2 - - Google Patents

Description

[Detailed explanation of the idea] 〔Technical field〕 This invention relates to a polar electromagnetic device.

[Background technology]

Some conventional electromagnetic devices have two armature blocks with permanent magnets.

Figures 4 and 5 represent an example of such an electromagnetic device. As can be seen in both figures, this electromagnetic device comprises two armature blocks 51, 52. 55 is a yoke, 56 is an iron core, and 57 is a coil. When the coil 57 is not energized,
Armature block 51 is in a state of movement in the direction of arrow N, and armature block 52 is in a state of movement in the direction of arrow K. While the coil 57 is energized, the armature block 51 is in a state of movement in the direction of arrow M, and the armature block 52 is in a state of movement in the direction of arrow L.

Although it is convenient to have two armature blocks,
Permanent magnet 5 of two armature blocks 51, 52
Since the 3,54 magnetic circuits Φ5 are connected in series, the magnetic resistance is large and the magnetic efficiency is extremely poor. For this reason, it is necessary to increase the force of the electromagnet by increasing the size of the coil, which has the disadvantage that when configured as a relay, the relay becomes large.

[Purpose of invention]

In view of the above, the object of this invention is to provide a multipolar electromagnet device with good magnetic efficiency.

[Disclosure of invention]

In order to achieve the above-mentioned purpose, this invention consists of an iron core with a coil wound around the middle part and magnetic pole parts at both ends, and an iron core that is magnetically connected to one end of the coil. A yoke that extends along the side of the coil and whose tip is a magnetic pole part that faces the other end of the iron core with the magnetic pole part in between.
YA, which is magnetically connected to the other end of the coil of the iron core, extends along the side of the core along the coil, and has a tip that forms a magnetic pole part that faces one end of the iron core with the magnetic pole part in between. The electromagnetic block has a yoke YB, and two pieces of magnetic material are inserted into the gap created by the opposing magnetic pole part of the yoke YA and the magnetic pole part at the other end of the iron core, sandwiching a permanent magnet from both ends in the direction of magnetization. The armature block A, which moves forward and backward, is inserted into the gap created by the opposing magnetic pole part of the yoke YB and the magnetic pole part at one end of the iron core.
The gist is an electromagnet device comprising an armature block B which is made up of two pieces of magnetic material sandwiching a permanent magnet from both ends in the direction of magnetization, and moves forward and backward by the action of a coil.

This invention will be described in detail below with reference to drawings showing embodiments thereof.

1 to 3 show one embodiment of this invention. As shown in the figure, this electromagnetic device includes an electromagnet block 1, an armature block A, and an armature block B.

The electromagnetic block 1 has an iron core 2, a yoke YA, and a yoke YB. A coil 3 is wound around an intermediate portion of the iron core 2, and both ends 2a and 2b serve as magnetic pole portions. The yoke YA is magnetically connected to one end side of the coil 3 of the iron core 2, and also extends along the side of the iron core 2 along the coil 3, with tip parts 4 and 5 extending between the magnetic pole part 2b of the other end of the iron core. The magnetic poles are opposite to each other. York YB is
It is magnetically connected to the other end side of the coil 3 of the iron core 2, and extends along the side of the iron core 2 along the coil 3, and the tips 6 and 7 are connected to the magnetic pole part 2 at one end of the iron core.
These are magnetic pole parts that face each other with a space a between them.

As in this example, yoke YA and yoke
When YB is arranged on both sides of the iron core, the iron core and the coil are surrounded by yoke YA and yoke YB, which reduces leakage of magnetic flux and improves efficiency. Furthermore, the influence of adjacent magnetic components is reduced.

The armature block A is made up of two magnetic pieces 8 and 9 sandwiching a permanent magnet 10 from both ends in the direction of magnetization. The same side ends of the two magnetic pieces 8 and 9 are connected to the opposing magnetic pole parts 4 and 5 of the yoke YA and the other end magnetic pole part 2b of the iron core.
It is inserted into the gap created by Armature block A
moves forward and backward (in the directions of arrows C and D) by the action of the coil 3.

The armature block B includes two magnetic pieces 11, 1
2 sandwich the permanent magnet 13 from both ends in the direction of magnetization. The ends of the two magnetic pieces 11 and 12 on the same side are inserted into the gap created by the opposing magnetic pole parts 6 and 7 of the yoke YB and the magnetic pole part 2a at one end of the iron core. The armature block B can be moved forward or backward (arrow E,
F direction).

The electromagnet device of this invention consists of armature blocks A,
If there is a difference in the magnetic resistance of the magnetic circuit when B moves in the forward direction and when B moves in the opposite direction, a single stable type will be obtained, and if there is no difference, a latching type will be obtained. In a single stable type electromagnet device, armature blocks A and B move forward and backward by energizing and de-energizing the coil. In a latching type electromagnet device, armature blocks A and B move forward and backward as the excitation polarity of the coil changes.

The operation of this electromagnet device having the configuration shown in FIG. 1 will now be described. Numbers 2a and 2b represent its operating state. As shown in figure b, coil 3
When the armature block A is not excited, the armature block A is moved in the direction of the arrow C, and the armature block B is moved in the direction of the arrow E. At this time, the magnetic circuit of the two permanent magnets 10 and 13 is
They are each independent and form closed magnetic paths Φ3 and Φ4. That is, the two permanent magnets 10 and 13 are not connected in series.

When a current is passed through the coil 3 to excite it with the polarity shown in Figure 2a, armature block A moves in the direction of arrow D and armature block B moves in the direction of arrow F due to the repulsion and attraction of the same polarity. Moving. At this time, the magnetic circuit of the two permanent magnets 10 and 13 is
They are each independent and form closed magnetic paths Φ1 and Φ2. Two permanent magnets 10, 13 and magnetic circuit Φ
1 and Φ2 are independent and not connected in series, so their influence on each other is small. Moreover, the magnetic resistance is lower than when two permanent magnets are connected in series in one magnetic circuit, and the magnetic efficiency can be increased. Therefore, the coil can be made smaller, and when configured as a relay, miniaturization can be easily achieved.

The state shown in Fig. 2a is a state of high magnetic resistance, so it remains in this state during excitation, but when this excitation is stopped, armature block A moves in the direction of arrow C and is connected. Polar block B
moves in the direction of arrow E and returns to a state of low magnetic resistance.

The electromagnet device of this invention can be made smaller and thinner overall if the coil and armature blocks A and B are housed in the yoke YA and the yoke YB.

Note that the electromagnet device of this invention is not limited to the above embodiment. The application is not limited to relays either.

Although the coils are schematically drawn in FIGS. 1 to 5, in reality, the coils are wound many times tightly. Further, it is usually wound around a coil frame rather than directly around an iron core.

[Effect of idea]

As seen above, the electromagnetic device of this invention is
Yoke YA, which is magnetically connected to one end of the coil of the iron core, and whose tip is a magnetic pole part facing the other end of the iron core with the magnetic pole part of the other end of the iron core in between; an electromagnetic block having a yoke YB connected to the yoke YB, the tip of which is a magnetic pole part facing one end of the iron core with the magnetic pole part in between;
Since it is equipped with two armature blocks A and B, two
Two permanent magnets and each magnetic circuit are independent, so there is little influence from each other. Also, for this reason, although the electromagnet device of this invention is equipped with two armature blocks having permanent magnets, the magnetic resistance is lower than when two permanent magnets are included in one magnetic circuit. Magnetic efficiency can be increased. For this reason,
Miniaturization can be easily achieved.

[Brief explanation of the drawing]

Fig. 1 is an assembled perspective view showing one embodiment of this invention, Fig. 3 is an exploded perspective view thereof, Fig. 2a,
b is a plan view showing its operating state, FIG. 4 is a perspective view showing one conventional example, and FIG. 5 is a plan view thereof. 1... Electromagnetic block, 2... Iron core, 3... Coil, 4, 5... Opposing magnetic pole part, 6, 7... Opposing magnetic pole part, 8, 9... Magnetic piece, 10, 13... Permanent magnet , 11, 12, ... magnetic piece, A, B ... armature block, YA, YB ... yoke, 2a ...
A magnetic pole part at one end of the iron core, 2b...a magnetic pole part at the other end of the iron core.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An iron core with a coil wound around the middle part and magnetic pole parts at both ends, which is magnetically connected to one end of the coil and on the side of the iron core. The yoke YA extends along the coil, and its tip is a magnetic pole part facing the other end of the iron core with the magnetic pole part in between, and is magnetically connected to the other end of the coil of the iron core. An electromagnetic block having a yoke YB which extends along the coil on the side of the core and whose tip is a magnetic pole part facing one end of the core with a magnetic pole part at one end of the core in between, the opposing magnetic pole part of the yoke YA and the magnetic pole part at the other end of the core. The armature block A, which is inserted into the gap created by the armature block A, which moves forward and backward by the action of the coil, and the opposing magnetic pole part of the yoke YB and the iron core. An electromagnet device comprising an armature block B which is made up of two magnetic pieces inserted into a gap formed by a magnetic pole part at one end and which sandwiches a permanent magnet from both ends in the direction of magnetization, and which moves forward and backward by the action of a coil. (2) The electromagnet device according to claim 1, wherein the yoke A and the yoke B are arranged along the coil on both sides of the iron core.