JPH0440250Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a monostable polarized electromagnetic device.

[Background Art] In the conventional balanced armature type polar electromagnet, as shown in Fig. 2, permanent magnets 4', 4' are installed in the armature 3', and the permanent magnets 4', 4' are placed in the same plane as the rotating plane of the armature 3'. Since the yoke 1' is disposed on the yoke 1', the total dimension of both along one direction within this plane becomes large, which makes it difficult to make the relay thinner when the relay is constructed.

[Purpose of the invention] The present invention has been made in view of the above points, and an object of the invention is to provide a polarized electromagnetic device that allows the relay to be made thinner.

[Disclosure of the invention] The polarized electromagnetic device of the invention has a pair of side arms on both sides of a central arm, and one end of the central arm and one end of the side arms are magnetically connected to each other by a body piece. A coupled E-shaped yoke, a first magnetic pole piece and a second magnetic pole piece magnetically coupled to each side arm via first and second permanent magnets, respectively, and a winding wound around the central arm of the yoke. an armature which is pivotally supported at the tip of the central arm of the yoke, is rotatable in a plane perpendicular to the length direction of the central arm, and is magnetically coupled to the central arm; The tips of the first and second magnetic pole pieces and the tips of the side arm are respectively located within the rotating plane of the armature, and the first magnetic pole piece and the side arm opposite thereto are A gap is formed in which both ends of the armature are inserted between the tip and the second magnetic pole piece and the tip of the other side arm facing the second magnetic pole piece, and a gap is formed between the first magnetic pole piece and the opposite end of the armature. The side arm of the yoke is magnetized with different polarities by the first permanent magnet placed between them, and the second magnetic pole piece and the side arm of the yoke opposing it are magnetized with different polarities between the two. are magnetized to different polarities by a second permanent magnet provided in the two permanent magnets, and the both side arms and the central arm are made to have the same polarity by two permanent magnets, and the tips of the first and second magnetic pole pieces are connected. The lines connecting the ends of both arms intersect at the pivot point of the armature within the rotating plane of the armature, and when the excitation coil is not energized, the magnetic circuit of the permanent magnet causes both ends of the armature to have the same polarity as both arms of the yoke. When the armature rotates around the pivot point, both ends of the armature are held in a position where they are attracted to one side of the first and second magnetic poles, and the central arm is magnetized by the excitation of the coil, this The armature, which has the same polarity as the central arm, rotates around its pivot point, and both ends of the armature move to positions where they are attracted to the side arms, making it possible to make the relay thinner. It's summery.

Embodiment FIG. 1 is a perspective view showing the entire embodiment of the present invention. The present invention includes an E-shaped yoke 1, first and second magnetic pole pieces 5a, 5b, first and second permanent magnets 4a, 4b, an exciting coil 2, and an armature 3.
It consists of. The yoke 1 includes a flat central arm portion 1c, first and second side arm portions 1a and 1b,
It is composed of a body part 1d, and first and second side arm parts 1a and 1b are provided on both sides of the central arm part 1c, and one end of the central arm part 1c and the first and second side arm parts 1a and 1b are provided.
One end of each is connected integrally with the body piece 1d, and E
It is a magnetic material formed in the shape of a letter. Amachiyua 3 is
The armature 3 is made of a flat magnetic material, and is pivoted in a notch 6 provided at the tip of the central arm 1c so that the armature 3 can freely rotate in a plane perpendicular to the longitudinal direction of the central arm 1c. supported and magnetically central arm portion 1c
is combined with The excitation coil 2 is wound around the central arm portion 1c of the yoke 1, and when excited, excites the central arm tip and both side arm tip ends with different polarities.
The first and second magnetic pole pieces 5a and 5b are made of flat magnetic material, and the first magnetic pole piece 5a is attached to the first side arm portion 1a via the magnetized surface of the first permanent magnet 4a. Coupled with the second pole piece 5b is the second permanent magnet 4b.
The second side arm portion 1b is coupled to the second side arm portion 1b via the magnetized surface. Here, the first and second magnetic pole pieces 5a, 5b
is arranged so that a line connecting the tips of the first and second magnetic pole pieces 5a, 5b and a line connecting the tips of both arm parts 1a, 1b intersect at the pivot point of the armature 3 within the rotation plane of the armature 3. be done. The first permanent magnet 4a is
The first magnetic pole piece 5a and the first side arm part 1a are magnetized with different polarities, and the second permanent magnet 4b is magnetized with the second magnetic pole piece 5.
b and the second side arm part 1b are magnetized to different polarities, and the first and second side arm parts 1a, 1b are magnetized to the same polarity, and the first and second magnetic pole pieces 5a, 5b are magnetized to the same polarity. Magnetize to the same polarity. For example, when the first and second side arm portions 1a, 1b are respectively magnetized to N poles by permanent magnets 4a, 4b, and the first and second magnetic pole pieces 5a, 5b are magnetized to S poles. To de-energize the excitation coil 2, the central arm 1
c and the armature 3 magnetically coupled thereto become the north pole. Further, a gap 7a is provided between the magnetic pole A1, which is the tip of the first side arm 1a, and the magnetic pole B1, which is the tip of the first magnetic pole piece 5a.
A gap 7b is provided between the magnetic pole A2, which is the tip of the armature 3, and the magnetic pole B2, which is the tip of the second magnetic pole piece 5b.
It falls within b. The operation of the present invention configured as described above will be explained below.

When the excitation coil 2 is not excited, both the arm portions 1a and 1b of the yoke 1 are magnetized to the N pole by the first and second permanent magnets 4a and 4b, and the center arm portion 1c is magnetized to the central arm portion 1c. Both ends of the armature 3 that is supported also have the same N pole, so the repelling magnetic force causes the armature 3 to rotate around the pivot point, and both ends of the armature 3 are magnetized to different poles, that is, S poles. The first and second magnetic pole pieces 5a and 5b are attracted to each other.

At this time, the magnetic flux is caused by the first and second permanent magnets 4a and 4b to the first permanent magnet 4a, the first magnetic pole piece 5a, the armature 3, the central arm 1c, the body 1d,
A magnetic circuit in which the magnetic flux passes through the first side arm 1a and reaches the first permanent magnet 4a again, the second permanent magnet 4b, the second magnetic pole piece 5b, the armature 3, the central arm 1c, Since a magnetic circuit is closed through the body portion 1d and the second side arm portion 1b to the second permanent magnet 4b, both ends of the armature 3 are connected to the second permanent magnet 4b, as shown in FIG. first and second magnetic pole pieces 5a,
It is held at the position where it is attracted to 5b. The central arm portion 1c and the armatures 3 magnetically coupled thereto are connected to both side arm portions 1a and 1b of the yoke 1 by the excitation coil 2.
When excited to different polarities, that is, amateur 3
When both ends of the armature 3 are excited to the south pole, since the first and second magnetic pole pieces 5a and 5b are magnetized to the same south pole, the armature 3 rotates around the pivot point due to the repelling magnetic force. , both ends of the armature are magnetized to different polarities, that is, N poles, first and second side arm portions 1a,
It is attracted to the 1b side. At this time, the excitation coil 2 creates a magnetic circuit in which the magnetic flux passes through the central arm portion 1c, the armature 3, the first side arm portion 1a, and the body portion 1b, and then reaches the central arm portion 1c again. , the armature 3, the second side arm 1b, the torso 1d, and the magnetic circuit that reaches the central arm 1c again. Therefore, both ends of the armature 3 are connected to the first and second side arms. It moves to the position where it is attracted to parts 1a and 1b. When the excitation coil 2 is de-energized, both ends of the armature 3 are connected again to both the first and second magnetic pole pieces 5 of the yoke 1 by the magnetic circuit of the permanent magnets 5a and 5b.
It is held at the position where it is attracted to the a and 5b sides.

The polar electromagnetic device configured as described above is used as a mechanism of a monostable polar relay in which a movable contact is driven by an armature.

The polarized electromagnet device configured as described above has good magnetic efficiency, has a simple structure in which the armature does not include a permanent magnet, and because the drive unit serves as a metering unit, there is no error in the weight balance of the armature with respect to the pivot point. This has the effect of reducing adverse effects on movement.

[Effect of the invention] The polarized electromagnetic device of the invention has a pair of side arms on both sides of a central arm, and one end of the central arm and one end of the side arms are magnetically connected to each other by a body piece. A coupled E-shaped yoke, a first magnetic pole piece and a second magnetic pole piece magnetically coupled to each side arm via first and second permanent magnets, respectively, and a winding wound around the central arm of the yoke. an armature which is pivotally supported at the tip of the central arm of the yoke, is rotatable in a plane perpendicular to the length direction of the central arm, and is magnetically coupled to the central arm; The tips of the first and second magnetic pole pieces and the tips of the side arm are respectively located within the rotating plane of the armature, and the first magnetic pole piece and the side arm opposite thereto are A gap is formed in which both ends of the armature are inserted between the tip and the second magnetic pole piece and the tip of the other side arm facing the second magnetic pole piece, and a gap is formed between the first magnetic pole piece and the opposite end of the armature. The side arm of the yoke is magnetized with different polarities by the first permanent magnet placed between them, and the second magnetic pole piece and the side arm of the yoke opposing it are magnetized with different polarities between the two. are magnetized to different polarities by a second permanent magnet provided in the second permanent magnet, and the both side arms and the center arm are made to have the same polarity by two permanent magnets, and the tips of the first and second magnetic pole pieces are connected. Since the line connecting the ends of both arms intersects at the pivot point of the armature within the rotation plane of the armature, the driving part is the armature, which requires less space for rotation and also reduces the rotation of the armature. This has the effect that the permanent magnet and excitation coil can be housed within a plane orthogonal to the plane, and the overall thickness can be reduced.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view of an embodiment of the present invention, and FIG. 2 is a schematic diagram of a conventional polarized electromagnet, in which 1 is a yoke, 1a and 1b are side arms, 1c is a central arm, and 2 is a schematic diagram of a conventional polarized electromagnet.
3 is an excitation coil, 3 is an armature, 4a and 4b are first and second permanent magnets, 5a and 5b are first and second magnetic pole pieces, and 7a and 7b are air gaps.

Claims (1)

[Scope of utility model registration request] A pair of side arms are provided on both sides of the central arm, and one end of the central arm and one end of the side arm are each magnetically coupled to each other by a trunk piece. a first magnetic pole piece and a second magnetic pole piece magnetically coupled via first and second permanent magnets, an excitation coil wound around the central arm of the yoke, and a tip of the central arm of the yoke. The armature is pivoted on the central arm and is rotatable in a plane perpendicular to the length direction of the central arm, and is composed of an armature that is magnetically coupled to the central arm.
The tips of the first and second magnetic pole pieces and the tip of the side arm are respectively located within the rotating plane of the armature, and between the first magnetic pole piece and the tip of one of the side arms facing the first pole piece. A gap is formed in which both ends of the armature are inserted between the second magnetic pole piece and the tip of the other side arm facing the second magnetic pole piece, and the first magnetic pole piece and the opposite side arm of the yoke are inserted. are magnetized to different polarities by a first permanent magnet placed between them, and
The second magnetic pole piece and the opposing side arm of the yoke are magnetized with different polarities by a second permanent magnet provided between them, so that the both side arms and the central arm become two permanent magnets. The magnets make the poles the same, and the line connecting the tips of the first and second magnetic pole pieces and the line connecting the tips of both arms intersect at the pivot point of the armature in the rotation plane of the armature, and when the excitation coil is not energized, Due to the magnetic circuit of the permanent magnet, both ends of the armature become the same polarity as both arms of the yoke, and the armature rotates around the pivot point.
Both ends of the armature are held in a position where they are attracted to one side of the first and second magnetic poles, and when the central arm is magnetized by excitation of the coil, the armature that has the same polarity as the central arm becomes its pivot point. A polarized electromagnetic device characterized in that the armature rotates around the armature and moves to a position where both ends of the armature are attracted to the side arm.