JPS58131707A - Polarized electromagnet device - Google Patents

Abstract

PURPOSE:To obtain easily the desired attracting force curve by varying freely thickness of the permanent magnet of the polarized electromagnet device by a method wherein the device is made to have structure in the manner that the edge faces of the edte parts of a pair of magnetic plates provided at both sides of the permanent magnet face respectively to yoke pieces. CONSTITUTION:At gaps formed between the upper part lateral piece 16 of a U-shaped yoke 15 and the edge faces 13a, 14a of the edge parts on one side of a pair of the magnetic plates 13, 14, and gaps formed between the lower part lateral piece 17 of the U- shaped yoke 15 and the edge faces 13b, 14b of the edge parts on another side of a pair of the magnetic plates 13, 14, attracting force is generated at the place where the directions of magnetic fluxes X, Y are in the same direction, and repulsion is generated at the place where the directions are in the opposite direction. Accordingly an armature 10 rotates in the anticlockwise direction centering around an axis 11. When the direction of the current in a coil 18 is changed to form magnetic flux Y thereof in the opposite direction to the direction mentioned above, the armature 10 rotates in the opposite direction to the direction mentioned above. The rotational stroke of the armature 10 is determined by an interval (d) between the upper part lateral piece 16 and the lower part lateral piece 17 of the yoke 15, and by length (c) of the magnetic plates 13, 14 of the armature 10, irrespective of the thickness of the permanent magnet 12.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a polarized electromagnet device, particularly a four-gap polarized electromagnet device.

Conventional 4-gap polarized electromagnet device 11, as shown in Figure jH1, a pair of magnetic plates are placed on both sides perpendicular to the m-axis of a plate-shaped permanent magnet 2 whose central portion is pivoted +H by an axis l. 3.4 is provided to constitute the armature 5, and the U-shaped yaw,
The tip of the U-shaped E piece 7 of the holder 6 is attached to the pair of magnetic plates 8.4.
The upper end portions 8λ of each.

41 with a tube, and the tip of the U-shaped lower piece 8 is connected to the respective lower ends Bb, 4 of the pair of magnetic plates 3.4.
It is constructed by extending it to between b. 9 is a coil. In this electromagnet device, in the state shown in FIG. 1, the magnetic flux X of the permanent magnet 2 is formed as shown by the dotted line, and the magnetic flux Y of the coil 9 is formed as shown by the solid line. Therefore, the tip extension of the U-shaped upper piece 7 of the yoke 6 and -zo・↑
magnetic plate 3. .

4 and the gap formed by the upper end portions 8a, 4a of the mesh 6 and the end extension of the U-shaped lower piece 8 of the eye 6 and the pair of magnetic plates 8.
, 4, an attractive force is generated where the directions of the magnetic fluxes X and Y are the same, and a repulsive force is generated where the directions are opposite. Therefore, in the illustrated state, the armchair rotates counterclockwise around the axis l. If you change the current direction of coil 9, coil 9
A magnetic flux Y is formed in the opposite direction to the above, and the armature 5 rotates in the opposite direction to the above. In this case, armature 50
The rotation stroke is (b-1)/2, where b is the size and thickness of the permanent magnet 2 and l is the thickness of the yoke 6, and is determined by the thickness b of the permanent magnet 2 and the thickness a of the yoke 6.

Therefore, in configuring the electromagnet device, the rotation stroke of the armature 5 and the thickness of the permanent magnet 2 are naturally limited.

This invention was made in view of the above circumstances, and consists of a plate-shaped permanent magnet whose central portion is pivotally supported, and a pair of plate-shaped permanent magnets provided on both sides perpendicular to the magnetic axis of the plate-shaped permanent magnet. an armature consisting of a magnetic plate; one yoke piece and the other yoke piece; and a connecting piece connecting them; one yoke piece facing the end face of one end of each of the pair of magnetic plates; a yoke disposed with the other yoke piece facing the end surface of the other end of the plate;
The gist of the present invention is a polarized electromagnet device including a coil mounted on the yoke.

In other words, in this polarized electromagnet device, the rotation stroke of the armature is determined independently of the thickness of the permanent magnet, so the thickness of the permanent magnet can be freely changed to easily obtain the desired attraction force curve. become able to.

Next, the present invention will be explained based on examples.

Figure 2 shows -’! of this invention! FIG. 2 is a configuration diagram of an example.

In the figure, lO is the armature, and the center part is the shaft ltm
Therefore, it consists of a plate-shaped permanent magnet 12 which is pivotally supported and a pair of magnetic plates 18, 14 provided on both sides of the permanent magnet 12, which are perpendicular to the magnetic axis of the permanent magnet 12 at 1↑ and -C. 15 is a U-shaped yoke, the upper horizontal piece 16 of which is connected to the magnetic plate 18.14.
The lower horizontal piece 17 faces the end surface 111.141 of the end of the magnetic plate 18.14.
, 14bK are facing each other. C is the pair of magnetic plates 18.
The length d of 14 indicates the distance between the upper horizontal piece 16 and the lower horizontal piece 17 of the yoke 16. A coil 18 is wound around the U-shaped vertical piece 19 of the U-shaped yoke 15.

In FIG. 2, the magnetic flux X of the plate-shaped permanent magnet 12 is formed as shown by a dotted line, and the magnetic flux Y of the coil 18 is formed as shown by a solid line. Therefore, a gap is formed between the upper horizontal piece 16 of the U-shaped yoke 15 and the end surface 1B8, 141 at one end of the pair of magnetic plates 18.14, and the gap between the lower horizontal piece 17 of the U-shaped yoke 16 and the pair of magnetic plates 18. Board 18.14
In the gap formed by the end surfaces 18b and 14b at the other end, an attractive force is generated where the directions of the magnetic fluxes X and Y are the same, and a repulsive force is generated where the directions are opposite. Therefore, in the illustrated state, the armature 10 rotates counterclockwise about the shaft 11. When the current direction of the coil 18 is changed to form its magnetic flux Y in the opposite direction, the armature 10 rotates in the opposite direction. That is, the coil 18
By alternately applying direct current to the armature lO
rotates around the shaft 11 in forward and reverse directions alternately.

In the polarized electromagnet device, as shown in F, the armature 10 is disposed inside the U-shaped yoke 15 and rotated there, so that the rotation stroke of the armature 1G is are the distance d between the upper horizontal piece 16 of the yoke 16 and the F section horizontal piece 17 and the magnetic plate ta of the armature 10.
, Z is determined by the length C, and the thickness of the permanent magnet 12 is irrelevant.

Therefore, it becomes possible to freely change the thickness of the permanent magnet and obtain a free attractive force curve.

FIG. 8 is a block diagram of another embodiment. That is, in this polarized electromagnet device, instead of the U-shaped yoke 15 (FIG. 2), the center part of the pair of yoke pieces 20 and 21 is connected to the connecting piece 21.
Using a substantially H-shaped yoke 22 connected by @,
One yoke piece 20 of the yoke 22 is connected to the armature l.
End surface 181,1 of one end of magnetic plate 111.14 of O
41, and the other yoke piece 21 faces the end surfaces 13b, 14b of the other end of the magnetic plate 18.
It is designed to be able to rotate around the shaft 11 within a range of 0.21. The other parts are the same as the polarized electromagnet device d shown in FIG. 2, and the effects are also the same.

The yoke pieces 20.21 in FIG. 3 are formed into a substantially U-shape as shown in FIG. 4, and the U-shaped horizontal pieces 28.24.2
The end faces of 5.26 are the end faces of one and the other end of a pair of magnetic plates 18.14! B Otori.

14a, 13b, and 14b may face each other.

As described above, in the polarized electromagnet device of the present invention, the end surface of one end of each of the pair of magnetic plates provided on both sides of the permanent magnet faces one of the yoke pieces, and the end face of each plate faces one of the yoke pieces. Because the end surface of the other end of the plate faces the other yoke piece, the rotation stroke of the armature is caused by the difference between the distance between the one and other yoke pieces and the length of the magnetic plate.・Determined by the entry of the p gap between the end bends of the magnetic plate, the permanent magnet Atsushi J2 is (I(F,
Become a relationship. Therefore, it is possible to freely change the thickness of the permanent magnet to obtain the desired attraction force curve by 6 Fm.
I'm going to growl.

[Brief explanation of the drawing]

Figure 1 is a horizontal 1]y diagram of a conventional example, ;'41: Section 2 is a configuration diagram of an embodiment of the present invention, Figure 3 is a configuration diagram of another N duck example, and Figure 4 is a modification thereof. It is a 119-light diagram of an example. lO...Complete-Mature 11...Magnetic+lqI++2
... Permanent magnet 18.14 ... Magnetic plate 15 ... U-shaped three J-ri Patent applicant Matsushita Electric Works Co., Ltd. Agent Patent attorney Takehiko Matsumoto Figure 1, 7, 2, 4

Claims (1)

[Scope of Claims] (1) Consisting of a plate-shaped permanent magnet whose central portion is pivotally supported and a pair of magnetic plates provided on both sides of the plate-shaped permanent magnet perpendicular to the magnetic axis. It consists of an armature, one yoke piece and the other yoke piece, and a connecting piece that connects them, one yoke piece facing the end face of one end of each of the pair of magnetic plates, and the other end of each plate. 1. A polarized electromagnet device comprising: a yoke disposed with the other yoke piece facing an end face of the part; and a coil attached to the yoke. (2) The polarized electromagnet device according to claim 1, wherein the yoke has a U-shape by connecting one yoke piece and the other yoke piece by connecting pieces at their respective ends. . (8) The yoke, one yoke piece, the other yoke piece, and the pipe are connected at their central portions by a connecting piece, so that the yoke has a substantially ■-shaped shape. type electromagnet device i1t.