JPH0446359Y2 - - Google Patents

Description

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

[Background technology]

A conventional electromagnet device is shown in FIG. As shown in the figure, this electromagnetic device includes an electromagnetic block 6 fixed to a base 5, etc., and a permanent magnet block 7 capable of forward and reverse movement. The electromagnetic block 6 has a yoke 63 having an E-shape as a whole, with a rod-shaped member 62 being caulked to a U-shaped member 61. The rod-shaped member 61 of the yoke 63 has
A coil 65 is wound through a coil frame 64. The free end of the rod-shaped member 62 is the central magnetic pole portion 62.
a. Both ends of the U-shaped member 61 facing each other with this in between form opposing magnetic pole parts 61a, 61a,
By exciting the coil 65, the central magnetic pole portion 62a and the opposing magnetic pole portions 61a, 61a have different polarities. The permanent magnet block 7 is made up of opposing magnetic pieces 71, 71 that sandwich a permanent magnet 72 from both sides in the direction of magnetization at the end portions on the same side. The electromagnetic block 6 and the permanent magnet block 7 are formed by a central magnetic pole part 62a and opposing magnetic pole parts 61a, 61a of the electromagnetic block 6.
The two magnetic pieces 71, 71 of the permanent magnet block 7 are assembled in such a way that the other end portions 71a, 71a on the same side are respectively exposed to the two gaps. This electromagnet device is constructed as described above, and by changing the excitation state of the coil 65, the permanent magnet block 7 is moved forward and backward in the directions of arrows A and B in the figure. In this way, in this electromagnet device, since the heavy permanent magnet block 7 having the permanent magnet 72 was moving, for example, in the figure, when it is installed with the right side facing down, when it is installed with the bottom side facing down, etc. Compared to the above, there is a drawback that there is a mounting direction that is greatly affected by the weight of the permanent magnet block 7, and the operating characteristics vary greatly depending on the mounting direction. .

[Purpose of invention]

In view of the above circumstances, the object of this invention is to provide an electromagnet device whose operating characteristics change little depending on the mounting direction.

[Disclosure of invention]

In order to achieve the above object, this invention has a central magnetic pole section and an opposing magnetic pole section that faces each other with the center magnetic pole section in between, which are magnetically connected by a yoke around which a coil is wound. A permanent magnet block is formed by two opposing magnetic pieces sandwiching a permanent magnet from both sides in the direction of magnetization at the ends thereof, and a recess provided from one end side. The electromagnetic block and the permanent magnet block are arranged in two spaces between the central magnetic pole part and the opposing magnetic pole part.
The armature is fixed such that the other ends of the same side of the magnetic material pieces face each other, and the armature has the other ends of the same side of the magnetic material pieces inserted into the recesses, and at least the other end side is in the center. The gist is an electromagnet device that is disposed between a magnetic pole part and an opposing magnetic pole part, and can be moved in forward and reverse directions by changing the excitation state of a coil.

This invention will be explained in detail below with reference to the drawings showing one embodiment thereof.

FIG. 1 shows an embodiment of an electromagnet device according to this invention. As shown in the figure, this electromagnet device includes an electromagnet block 1, a permanent magnet block 2, and two armatures 3, 3. The electromagnet block 1 includes a U-shaped member 11 and a rod-shaped member 12.
It has a yoke 13 which is caulked and has an E-shape as a whole. Rod-shaped member 11 of yoke 13
A coil 15 is wound around the coil frame 14 . The free end of the rod-shaped member 12 is the central magnetic pole part 12a, and the U-shaped member 11 faces the central magnetic pole part 12a.
The opposite ends of the center magnetic pole part 12a and the opposite magnetic pole parts 11a, 11a have different polarities by exciting the coil 15, respectively.

The permanent magnet block 2 has opposing magnetic pieces 2
1 and 21 sandwich a permanent magnet 22 from both sides in the direction of magnetization at the end portions on the same side, and the permanent magnet 22 is formed into a U-shape as a whole.

These electromagnet block 1 and permanent magnet block 2
This means that the two magnetic pieces 21, 21 of the permanent magnet block 2 are placed in the two gaps formed by the central magnetic pole part 12a of the electromagnetic block 1 and the opposing magnetic pole parts 11a, 11a.
They are each fixed to the base 4 or the like so that the other end portions 21a, 21a on the same side face each other.

The two armatures 3 are each made of a magnetic material,
A recess 31 is formed from one end side. In each of these armatures 3, the other end 21a on the same side of the magnetic piece 21 of the permanent magnet block 2 is inserted into the recess 31, and the other end 32 is connected to the central magnetic pole 12a of the electromagnet block 1 and the opposite magnetic pole 11a. The magnetic piece 21 is arranged so as to be located between the same side end 21a of the magnetic piece 21 as a fulcrum and can be rotated forward and backward in the directions of arrows C and D in the figure.

This electromagnet device is constructed as described above, and when a current is applied to the coil 15 from the state shown in FIG. , different polarity attraction, and same polarity repulsion, the armature 3 rotates in the C direction in the figure using the other end 21a on the same side of the magnetic piece 21 as a fulcrum,
The other end of the left armature is the left opposing magnetic pole portion 11a
Then, the other end of the right armature comes into contact with the central magnetic pole portion 12a. From this state, a current is passed through the coil 15 in the opposite direction to the previous one, and the central magnetic pole portion 12a is
When the opposite magnetic pole part 11a is magnetized to S pole and N pole, armature 3
rotates in the D direction in the figure using the other end 21a on the same side of the magnetic piece 21 as a fulcrum, the other end of the left armature is connected to the center magnetic pole part 12a, and the other end of the right armature is connected to the right side. comes into contact with the opposing magnetic pole part 11a of
The state shown in FIG. 1 is reached.

As seen above, in this electromagnet device, the electromagnet block 1 and the permanent magnet block 2 having a permanent magnet 22 are fixed, and the armature 3 is designed to move forward and backward. In this way, since the heavy permanent magnet block 2 is fixed and the light armature 3 is moved, the operating characteristics do not change significantly depending on the mounting direction of the electromagnet device. Moreover, the size of the permanent magnet 22 is determined by itself in order to obtain a desired magnetic attraction force, and it is not possible to reduce the weight. On the other hand, armature 3
Since the electromagnet device can be made smaller, thinner, and lighter in weight, the operating characteristics do not change depending on the mounting direction, and the electromagnetic device can operate stably.

The electromagnet device shown in Fig. 1 is a so-called latching type electromagnet device, in which the coil is stabilized in a non-excited state after forward and reverse rotation. By deleting the two-dot chain line part in 3, it is possible to easily create a so-called single-stable electromagnetic device that stabilizes in one state when the coil is in a non-excited state after forward and reverse rotation. can. The method for creating a single stable type is not limited to this method, and other methods may be used.

In the above embodiment, in order to reduce the weight of the armature, the other end may be made thinner, as shown in FIG.

Another embodiment is shown in FIG.

As shown in the figure, in this electromagnet device, the free end of the rod-shaped member 12 and both ends of the U-shaped member 11 extend largely from one end surface of the coil frame 14, and the other end 21a on the same side of the magnetic piece 21 extends greatly. The other end 21 on the same side of the magnetic piece 21 is extended and inserted into the two gaps formed by the central magnetic pole part 12a and the opposing magnetic pole part 11a.
a is included in each. The armature 3 has a large concave portion 31 formed from one end thereof, has a substantially U-shape as a whole, and is disposed such that the entire armature is located between the central magnetic pole portion 12a and the opposing magnetic pole portion 11a. A protrusion 16 is formed on one end surface of the coil frame 14. This protrusion 16 is the armature 3
The armature 3 is in contact with the end surface on the other end side, and the armature 3 is in contact with the end surface on the other end side.
6 as a fulcrum, it rotates forward and backward in directions E and F in the figure. As shown in FIG. 2, the weight of the armature 3 can be reduced, and
The entire electromagnet device can be downsized.

The electromagnet device according to this invention is not limited to the above embodiment. In the embodiment shown in FIG.
In order to operate the armature 3 smoothly, the tip of the other end 21a on the same side of the magnetic piece 21 and the inner surface of the recess 31 of the armature 3 may be rounded.

[Effect of idea]

As explained above, in the electromagnet device according to this invention, the central magnetic pole part and the opposing magnetic pole part facing each other with the center magnetic pole part in between are magnetically connected by a yoke around which a coil is wound. An electromagnetic block that takes on different polarities when excited by the magnet, a permanent magnet block that has two opposing magnetic pieces sandwiching a permanent magnet from both sides in the direction of magnetization at the same end, and one end The electromagnetic block and the permanent magnet block each have the other end of the same side of the two magnetic pieces facing the two gaps formed by the central magnetic pole part and the opposing magnetic pole part. The armature is fixed such that the other end of the same side of the magnetic piece is inserted into the recess, and at least the other end is located between the central magnetic pole part and the opposing magnetic pole part. The coil is arranged so that it can be moved in the forward and reverse directions by changing the excitation state of the coil. In this way, in conventional electromagnet devices, a heavy permanent magnet block moves, but in the electromagnet device according to this invention, a light armature moves, so there is little change in operating characteristics depending on the mounting direction.

[Brief explanation of drawings]

Fig. 1 is a plan view showing one embodiment of the electromagnet device according to this invention, Fig. 2 is a plan view showing another embodiment, Fig. 3 is a plan view showing another example of the armature, and Fig. 4 is a plan view showing another example of the armature. FIG. 2 is a plan view showing a conventional electromagnet device. DESCRIPTION OF SYMBOLS 1... Electromagnetic block, 2... Permanent magnet block, 3... Armature, 11a... Opposing magnetic pole part, 12
a... Central magnetic pole part, 13... Yoke, 15... Coil, 21... Magnetic piece, 21a... Same side other end of magnetic piece, 22... Permanent magnet, 31... Recessed part,
32...The other end side of the armature.

Claims (1)

[Scope of utility model registration request] An electromagnetic block, in which a central magnetic pole part and an opposing magnetic pole part facing each other with the central magnetic pole part in between are magnetically connected by a yoke around which a coil is wound, and which take on different polarities by excitation of the coil;
A permanent magnet block consisting of two opposing magnetic pieces sandwiching a permanent magnet from both sides in the direction of magnetization at the same end thereof, and an armature with a recess formed from one end side. The magnet block is fixed so that the other ends of two magnetic pieces on the same side face each other in two gaps formed by a central magnetic pole part and an opposing magnetic pole part, and the armature is
The other end of the same side of the magnetic piece is inserted into the recess, and at least the other end is positioned between the central magnetic pole and the opposing magnetic pole, and by changing the excitation state of the coil. An electromagnetic device that is designed to be moved in forward and reverse directions.