JPH07320622A - Polar electromagnet - Google Patents

Abstract

PURPOSE:To provide a polar electromagnet which has simple enough structure to be assembled and has excellent economical properties and productivity by storing a rectangular permanent magnet symmetrically changeably in T-shaped recessed part of a flat plate-like yoke formed between mutually facing poles of a coil block. CONSTITUTION:A coil 2A is wound on a U-shaped iron core 2B to compose a coil block 2. A flat plate-like yoke 4 which composes a magnetic bypass circuit is inserted and fixed between magnetic poles 3A, 3B at both ends of the electromagnet. A permanent magnet 5 having different polarity mutually in thickness directions is set in a recessed part 4A formed in the yoke 4. A contactor 6 to be brought into contact with the permanent magnet 5 at the mountain-like projected part 6C formed in the lower face is put on the permanent magnet 5. The contactor 6 is rotated on the mountain-like projected part 6C as a fulcrum due to the function of the electromagnet in order to make the magnetic poles 6A, 6B touch or be parted mutually. Regarding the polar electromagnet 1, the recessed part 4A is made to be a T-shape and moreover the permanent magnet 5 is made to be rectangular and thus the magnet is stored symmetrically on the center line of the magnetic poles or stored asymmetrically when the magnet is set in the recessed part 4A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polar electromagnet having a simple structure, and more particularly to a polar electromagnet which can be used as a latching type polar electromagnet or a single stable type polar electromagnet by simply changing the arrangement of permanent magnets. .

[0002]

2. Description of the Related Art FIG. 6 is a sectional view of an example of a conventional polarized electromagnet, and FIG. 6 (a) shows a conventional latching type polarized electromagnet,
(B) shows a single-stable polarized electromagnet.

A conventional polar electromagnet 11 is fixed to the coil block 12 assembled by winding a coil 12A around an approximately U-shaped iron core 12B and the magnetic poles 13A and 13B of the iron core 12B by laser welding or the like. It is composed of a mountain-shaped permanent magnet 14 and an armature 15 which rotates about a fulcrum 15A in contact with the apex of the mountain-shaped permanent magnet 14.

For example, when the mountain-shaped permanent magnet 14 is magnetized to have S poles at both ends in the longitudinal direction and the peak C of the mountain shape is magnetized to N pole as shown in (a), a latching type polarized electromagnet is constructed.
(B) As shown in the figure, when the position of a predetermined distance x from the peak C of the mountain shape is magnetized to the N pole, a single-stable polarized electromagnet is constructed.

The armature 15 makes a seesaw motion about the fulcrum 15A, and only when one of the magnetic poles (for example, the magnetic pole 1) is applied to the coil block 12 when a power source having a predetermined polarity is applied.
The connection is switched from 3A) to the other magnetic pole (for example, magnetic pole 13B).

In the case of the latching type polarized electromagnet shown in FIG. 1A, the center line C is the axis of symmetry and the magnetic pole 13A side and the magnetic pole 1 are located.
The magnetic circuit on the 3B side is formed symmetrically (the magnetic resistance is equal), and the mountain-shaped permanent magnet 14 has a center line C of N.
Since the poles and both ends are magnetized to the S pole, the magnetizing action of the mountain-shaped permanent magnet 14 in the non-excited state acts equally on the magnetic pole 13A side and the magnetic pole 13B side with the center line C as the axis of symmetry.

When a power source of a predetermined polarity is applied to the coil block 2 from a state in which the armature 15 is in contact with the magnetic pole 13A by some action in a non-excited state, an electromagnet is formed, and the action of the electromagnet causes a contact. The pole piece 15 separates from the magnetic pole 13A side and comes into contact with the magnetic pole 13B side.

Even if the power source is removed from this state, the contact between the armature 15 and the magnetic pole 13B is maintained, and when a power source having a polarity opposite to the predetermined polarity is applied, the armature 15 is inverted and comes into contact with the magnetic pole 13A. . In this way, the latching-type polar electromagnet of FIG. (A) is formed which forms two stable states in which the armature 15 and the magnetic pole 13A are in contact with each other and the armature 15 and the magnetic pole 15B are in contact with each other in the non-excited state.

On the other hand, in the case of the single-stable polar electromagnet shown in FIG. 1B, the magnetic circuits on the magnetic pole 13A side and the magnetic pole 13B side are formed symmetrically (having the same magnetic resistance) with the center line C as the axis of symmetry. , The mountain-shaped permanent magnet 14 has a mountain-shaped apex C
Since a position of a predetermined distance x from the above is magnetized to the N pole, the magnetizing action by the mountain-shaped permanent magnet 14 in the non-excited state is the center line C.
Since it is biased to the magnetic pole 13A side with the symmetry axis as the axis of symmetry, a stronger magnetic force acts on the magnetic pole 13A side than on the magnetic pole 13B side, and a single-stable polarized electromagnet in which the armature 15 always contacts the magnetic pole 13A in a non-excited state is configured. It

When a power source having a predetermined polarity is applied to the coil block 2 from this state, an electromagnet is formed, and the armature 15 is separated from the magnetic pole 13A side by the action of the electromagnet and comes into contact with the magnetic pole 13B side. Further, when the power source is removed from the state where the armature 15 is in contact with the magnetic pole 13B side, the armature 15 is inverted by the magnetizing action of the mountain-shaped permanent magnet 14, and the armature 15 is restored to the initial state in which the armature 15 is in contact with the magnetic pole 13A. To do.

As described above, in the conventional polarized electromagnet 11, the mountain-shaped permanent magnet 14 is connected to the magnetic pole 13A of the iron core 12B and the magnetic pole 1.
3B is fixed by laser welding or the like, both longitudinal ends of the mountain-shaped permanent magnet 14 are magnetized to the S pole, and a position deviated from the center or the center is magnetized to the N pole. Alternatively, a single-stable polarized electromagnet is configured.

[0012]

[Problems to be Solved by the Invention] Conventional polarized electromagnet 11
Is configured to rotate about the fulcrum 15A of the armature 15 that is in contact with the apex of the mountain-shaped permanent magnet 14 by using the mountain-shaped permanent magnet 14 as the permanent magnet. There is a problem that precision is required and the shape becomes complicated, resulting in cost increase.

In order to keep the positional relationship between the mountain-shaped permanent magnet 14 and the armature 15 appropriate, the mountain-shaped permanent magnet 14 is attached to the iron core 12.
It is required to fix the magnetic poles 13A and 13B opposed to each other by laser welding or the like, and there is a problem that assembly becomes complicated.

Further, the magnetizing position of the N pole of the mountain-shaped permanent magnet 14 must be separated into a latching type and a single-stable type, and whether the magnetized mountain-shaped permanent magnet 14 is a latching type by visual check or a single-stable type. Since it cannot be distinguished, there is a problem that magnetizing work and management are troublesome.

The present invention has been made to solve the above problems, and its purpose is to have a simple structure and easy assembly.
An object of the present invention is to provide a polarized electromagnet that can be used for both a latching type polarized electromagnet and a single stable type polarized electromagnet using the same parts.

[0016]

In order to solve the above-mentioned problems, a polarized electromagnet according to the present invention is provided with a T-shaped recess in a flat yoke and the permanent magnet is formed of a rectangular permanent magnet. When the permanent magnets are arranged in the T-shaped recesses, the permanent magnets are arranged symmetrically or asymmetrically with respect to the center line between the opposing magnetic poles and housed.

In the polarized electromagnet according to the present invention, the rectangular permanent magnet is arranged and housed in the T-shaped concave portion so as to be symmetrical with respect to the center line between the opposing magnetic poles to form a latching type polarized electromagnet. It is characterized by

Further, in the polarized electromagnet according to the present invention, a rectangular permanent magnet is arranged and housed in a T-shaped recess so as to be asymmetric with respect to the center line between the opposed magnetic poles, and a single-stable polarized electromagnet is provided. It is characterized by being configured.

[0019]

The polarized electromagnet according to the present invention includes a plate yoke and a T-shaped magnet.
By providing the V-shaped concave portion, forming the permanent magnet with a rectangular permanent magnet, and changing the arrangement of the rectangular permanent magnets arranged in the T-shaped concave portion, the permanent magnet is symmetrical with respect to the center line between the opposing magnetic poles, or Since they can be asymmetrically arranged and housed, the latching-type polar electromagnet and the single-stable polar electromagnet can be configured using the same parts.

[0020]

1 to 5 show the construction of a polarized electromagnet according to the present invention. FIG. 1 is an overall configuration diagram of a polarized electromagnet according to the present invention, FIG. 2 is a plan view of a flat yoke and a rectangular permanent magnet of the polarized electromagnet according to the present invention, and FIG. FIG. 4 is an assembly diagram of the electromagnet, FIG. 4 is a sectional view of a latching type polarized electromagnet to which the configuration according to the present invention is applied, and FIG. 5 is a sectional view of a single stable type polarized electromagnet to which the configuration according to the present invention is applied.

1 to 3, a polar electromagnet 1 is inserted and fixed between a coil block 2 in which a coil 2A is wound around a substantially U-shaped iron core 2B and magnetic poles 3A and 3B of the coil block 2. Then, a flat plate yoke 4 forming a magnetic circuit with the iron core 2B, a rectangular permanent magnet 5 arranged in a T-shaped concave portion 4A provided in the flat plate yoke 4, and a mountain-shaped convex portion 6C. Of the armature 6 that rotates about the fulcrum and the ends 6A and 6B contact the magnetic poles 3A and 3B, respectively.

The coil block 2 forms an electromagnet, and a power source having a predetermined polarity is applied between the coil electrode (+) 2a and the coil electrode (-) 2b to correspond to the direction of the current flowing through the coil 2A ( Right hand thumb rule) Magnetic pole 3
The polarities of A and 3B (N and S poles) are set, while the product of the number of turns of the coil 2A and the current value flowing in the coil 2A (magnetomotive force)
And a magnetic flux that is inversely proportional to the resistance of the magnetic circuit (magnetic resistance) is generated.

As shown in FIG. 2, the flat yoke 4 has a substantially T-shaped shape.
It is provided with a T-shaped concave portion 4A having a V shape, and the T-shaped concave portion 4A has a length L in the longitudinal direction and the width direction of the flat yoke 4.
A substantially T-shaped groove composed of a combination of sides (L> W) having a length W is formed.

The T-shaped recess 4A has a length L in the longitudinal direction of the plate yoke 4 which is symmetrical with respect to the center line X between the magnetic poles 3A and 3B of the coil block 2, and is asymmetrical with respect to the center line X. The length W in the longitudinal direction of the flat yoke 4 is set so that

The length L and length W of the T-shaped recess 4A are set so as to be symmetrical with respect to the center line (not shown) in the width direction of the flat yoke 4.

In the T-shaped recess 4A thus formed,
The rectangular permanent magnets 5 having rectangular surfaces each having a side length of approximately L and W (actually shorter than L and W) are arranged. For example, if the side L of the rectangular permanent magnet 5 corresponds to the longitudinal direction of the flat yoke 4 as shown in FIG.
The rectangular permanent magnets 5 are symmetrically arranged in the longitudinal direction of the flat yoke 4 with the center line X as the axis of symmetry. (B) The polar electromagnet 1 configured by the combination of the figures is formed by the magnetizing action of the rectangular permanent magnets 5 symmetrically arranged in the longitudinal direction of the flat yoke 4.
The latching type polarized electromagnet 9 shown in FIG. 4 is configured.

Further, when the rectangular permanent magnets 5 are arranged such that the sides L of the rectangular permanent magnets 5 correspond to the width direction of the flat yoke 4 as shown in FIG. The yoke 4 is arranged asymmetrically in the longitudinal direction. (C) The polar electromagnet 1 configured by the combination shown in the figure is a single-stable polar electromagnet shown in FIG. 5 due to the magnetizing action of the rectangular permanent magnets 5 asymmetrically arranged in the longitudinal direction of the flat yoke 4. 1
Configure 0.

In this way, the flat yoke 4 is provided with the T-shaped recess 4A for accommodating the rectangular permanent magnet 5, and the arrangement of the rectangular permanent magnet 5 is simply changed to use the same parts having the same number of parts. To constitute a latching type polarized electromagnet 9 and a single-stable type polarized electromagnet 10.

The rectangular permanent magnet 5 is formed according to the shape of the T-shaped recess 4A (L * W rectangle) so that it can be housed in the T-shaped recess 4A provided in the flat yoke 4. , The surface contacting the bottom surface of the T-shaped recess 4A is magnetized so as to have an S pole and the opposite surface has an N pole.

Further, by using the flat plate yoke 4 provided with the T-shaped recess 4A and the rectangular permanent magnet 5, the flat plate yoke 4 can be fixed between the magnetic poles 3A and 3B of the coil block 2 by press fitting. Since it can be fixed and the precision of the rectangular permanent magnet 5 can be loosened, the component shape and the configuration of the polar electromagnet 1 are simplified.

As shown in FIGS. 4 to 5, the armature 6 is provided with a mountain-shaped convex portion 6C having an inclined portion at a portion in contact with the rectangular permanent magnet 5 on the center line X, and the mountain-shaped convex portion is formed. Since the armature rotates about 6C as a fulcrum and the ends 6A and 6B come into contact with the magnetic poles 3A and 3B, respectively, a stable rotary motion can be obtained.

To assemble the polar electromagnet 1, as shown in FIG. 3, the plate yoke 4 is press-fitted into the coil block 2 and the rectangular permanent magnet 5 is inserted into the T-shaped recess 4A of the plate yoke 4. After the insertion, by disposing the armature 6 on the rectangular permanent magnet 5, it is possible to assemble in one direction.

Further, by visually checking the arrangement of the rectangular permanent magnets 5 with the polarized electromagnet 1 assembled,
It can be confirmed whether it is the latching type polarized electromagnet 9 or the single-stable type polarized electromagnet 10.

[0034]

As described above, in the polar electromagnet according to the present invention, the flat yoke is provided with the T-shaped concave portion, and the permanent magnet is formed by the rectangular permanent magnet and is arranged in the T-shaped concave portion. By changing the arrangement of the rectangular permanent magnets and arranging the permanent magnets symmetrically or asymmetrically with respect to the center line between the opposing magnetic poles and storing them, the same parts are used for latching type polar electromagnet and single stable type magnet. The polar electromagnet can be easily constructed.

Therefore, it is possible to provide a polarized electromagnet having a simple structure, easy assembly, and excellent economical efficiency and productivity.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a polarized electromagnet according to the present invention.

FIG. 2 is a layout view of a flat yoke and a rectangular permanent magnet of a polarized electromagnet according to the present invention.

FIG. 3 is an assembly diagram of a polarized electromagnet according to the present invention.

FIG. 4 is a sectional view of a latching-type polarized electromagnet to which the configuration according to the present invention is applied.

FIG. 5 is a sectional view of a single-stable polar electromagnet to which the configuration according to the present invention is applied.

FIG. 6 is a sectional view of an example of a conventional polarized electromagnet.

[Explanation of symbols]

1 ... Polarized electromagnet, 2 ... Coil il block, 2A ... Coil, 2B ... Iron core, 2a, 2b ... Coil electrode, 3A, 3B
... magnetic poles, 4 ... plate-like yokes, 4A ... T-shaped concave portions, 5 ... rectangular permanent magnets, 6 ... armatures, 6A, 6B ... end portions, 6C ... mountain-shaped convex portions, 9 ... latching type polarized electromagnets 10 ... Single-stable polarized electromagnet.

Claims (3)

[Claims] 1. A coil block, in which a coil is wound around a U-shaped iron core and opposite ends of which form a magnetic pole, and a flat plate shape which is inserted and fixed between the opposite magnetic poles to form a magnetic bypass circuit. A yoke and a permanent magnet magnetized to have different polarities in the thickness direction and attached to the recess provided in the flat yoke, and contact this permanent magnet, and rotate by the action of an electromagnet to contact the magnetic pole. And a T-shaped recess in the flat yoke, the permanent magnet is formed of a rectangular permanent magnet, and the rectangular permanent magnet is formed in the T-shaped recess. When arranging, the permanent magnets are arranged symmetrically or asymmetrically with respect to the center line between the opposed magnetic poles,
A polarized electromagnet characterized by being stored. 2. The latching type polarized electromagnet is configured by arranging and storing the rectangular permanent magnet in the T-shaped recess so as to be symmetrical with respect to the center line between the opposed magnetic poles. The polarized electromagnet according to item 1. 3. A single-stable polarized electromagnet is configured by arranging and storing the rectangular permanent magnet in the T-shaped recess so as to be asymmetric with respect to the center line between the opposed magnetic poles. The polarized electromagnet according to claim 1.