JPS593904A - Polarized electromagnet block - Google Patents

Abstract

PURPOSE:To prevent the leakage of magnetic flux to the utmost and attain the high sensitivity, by a method wherein a permanent magnet and an armature in a movable block and a core are combined on the same plane to decrease the height, and the permanent magnet comes near a working gap to the utmost. CONSTITUTION:A movable block 21 comprises a permanent magnet 22 with rectangular cross-section and armaturs 23, 24 fixed to both sides of the magnet 22, and N-pole and S-pole are magnetized in arrow (k), (k') direction. A core 30 is E-shaped and has a center leg 31 at the center and side legs 32, 33 at both sides, and a coil 34 is wound on the middle leg 31. The movable block 21 is combined with the core 30 on the same plane so that projections 23a, 24a of the armature 23, 24 are disposed respectively at a working gap 35 formed between the middle leg 31 and end of the side leg 32 and at a working gap 36 formed between the middle leg 31 and end of the side leg 33. The movable block 21 is supported by a guide member and movable in parallel in the arrow (k), (k') direction.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of the Invention The present invention relates to a polarized electromagnet block incorporated into a polarized relay or the like.

(b) Conventional technology and its problems Conventionally, this type of polarized electromagnetic block has been developed using the first technology;
As shown in the figure, a movable block 1 with U-shaped armatures 3 and 4 fixed to both sides (magnetized surfaces) of a permanent magnet 2 rotates around a rotation support 5 provided at the center of the permanent magnet 2. The iron core 10, which is movably provided and around which the coil 11 is wound, is attached to the projecting pieces 3a, 4a, and 3b of the armatures 3, 4 of the movable block 1.
, 4b was provided.

In this case, when the coil 11 is excited in the direction of arrow m, one end 10a of the iron core 10 is excited to the S pole and the other end 10b is excited to the N pole, and the permanent magnet 2
, 3b are excited to the north pole, and the protrusions 4a and 4b of the armature 4 are excited to the south pole, so repulsive force and attractive force act on them, respectively, and the movable block 1 moves counterclockwise around the support part 5. It rotates and the different poles come into contact. At this time, the coil 11
Even if the excitation is canceled, this state is maintained by the magnetic force of the permanent magnet 2. On the other hand, when the coil 11 is excited in the opposite direction of the arrow m, one end 10a of the iron core 10 is excited to the north pole and the other end 10b is excited to the south pole, and the movable block 1 rotates clockwise.
Different poles come into contact.

However, in this case, since the working gap is on both sides of the coil 11, the movable block 1 and the iron core 10 must be stacked vertically, and when incorporated into a polarized relay, the height increases and the flat It could not be typed. Further, since the working gap was far from the permanent magnet 2, the magnetic flux of the permanent magnet 2 leaked, and high sensitivity was not achieved.

(c) Purpose of the Invention The present invention has been made in view of the above-mentioned drawbacks, and its purpose is to create a flat type polarized relay by combining the permanent magnet of the movable block, the armature, and the iron core on the same plane. It is an object of the present invention to provide a polarized electromagnet block which can achieve high sensitivity by placing a permanent magnet as close as possible to a working gap and preventing leakage of magnetic flux as much as possible.

(b) Structure and effect of the invention In order to achieve the above object, the polarized electromagnetic block according to the present invention includes a movable block in which armatures are fixed to both sides of a permanent magnet having a square cross section, a middle leg and a pair of side legs. The movable block and the E-shaped core are arranged on the same plane so that the protrusion of the armature is located between the middle leg and the side leg. and a movable block is movably supported by the protrusion of the armature between the middle leg and the side leg.

With the above configuration, the present invention can provide a thin flat type polarized relay without stacking the permanent magnet, armature, and iron core of the movable block. Furthermore, the permanent magnet can be installed near the working gap, reducing leakage of magnetic flux from the permanent magnet and achieving high sensitivity.

(E) Description of Embodiments FIG. 2 shows a first embodiment of a polarized electromagnetic block according to the present invention, and this polarized electromagnetic block 10 is generally composed of a movable block 21 and an iron core 30.

The movable block 21 has armatures 23 and 24 fixed to both sides of a permanent magnet 22 having a rectangular cross section with adhesive or the like, and the permanent magnet 22 has N and S poles magnetized in the direction of the arrow. There is. The iron core 30 is a so-called E-shaped iron core, and has a middle leg 31 in the center and side legs 32 and 33 on both sides, and a coil 34 is wound around the middle leg 31.

The movable block 21 has a working gap 35 and a middle leg 31 in which the protrusions 23a and 24a of the armatures 23 and 24 are formed between the ends of the middle leg 31 and the side leg 32, respectively.
and the working gap 3 formed between the end of the side leg 33
6, it is assembled on the same plane as the iron core 30. Further, the movable block 21 is supported by a guide member (not shown) so as to be movable in parallel in the direction of the arrow.

In the above configuration, when the coil 34 is excited in the direction of arrow m, the end of the middle leg 31 is excited to the north pole, and the ends of the side legs 32 and 33 are excited to the south pole. On the other hand, the protrusions 23a and 24a of the armatures 23 and 24 are each driven to N by the magnetic force of the permanent magnet 22.
Since the pole and the south pole are excited, a repulsive force and an attractive force act respectively, and the movable block 21 moves in parallel in the direction of the arrow, and the different poles come into contact with each other. At this time, even if the excitation of the coil 34 is canceled, this state is maintained by the magnetic force of the permanent magnet 22.

Conversely, when the coil 34 is excited in the direction of the arrow m, the middle leg 31
The ends of the side legs 32 and 33 are excited to the south pole, and the ends of the side legs 32 and 33 are excited to the north pole, and the movable block 21 moves in parallel in the direction of the arrow, and the different poles come into contact with each other.

That is, each time the excitation direction of the coil 34 is changed, the movable block 21 moves in parallel to perform a so-called latching operation.

Next, a second embodiment will be described with reference to FIG. 3 and subsequent figures. In this second embodiment, the movable block 21 will be explained in terms of rotation j.

As shown in FIGS. 6 and 7, the movable block 21' has a permanent magnet 22 and armatures 23, 24 fitted into a frame 27 of a support 25 made of resin. amateur 2°3
, 24 sandwich the permanent magnet 22, and its protrusion 23a
, 24a protrude inward and are excited by the magnetic force of the permanent magnet 22 to N and S poles, respectively. The iron core 30 is formed into an E-shape by fixing the end of the middle leg 31 to the base of the U-shaped member constituting the side legs 32 and 33. The coil 34 is wound around a spool 37), and is integrated with the iron core 30 by fitting the center hole 37a of the spool 37 into the middle leg 31.

The movable block 21 is loosely fitted into a hole 29 formed at one end of the plate-shaped portion 26 of the support body 25 by a pin 39 formed on one end flange 38 of the spool 37, and is connected to the protruding portions 23a, 24a4 of the armatures 23.24. The working gap is 35.36i, respectively.

That is, the permanent magnet 22, the amachi core 23, 24, and the iron core 3.
0 and the movable block 21 is located on the same plane as the pin 3.
It is automatically rotated in the direction of the arrow in FIG. 3 on a horizontal plane using 9 as a fulcrum.

The polarized electromagnetic block 20 having the above configuration is installed on a base 45 with contact blocks 40 and 40 on both sides and is coated with a force of <-46. Contact piece 41 and fixed contact 44
It consists of fixed contact pieces 43a and 43b having fixed contact pieces 43a and 44b, and a movable contact piece 41.
Groove portion 28a formed in arm portion 28.28 of support body 25 of
, 28a.

In the polarized relay having the above configuration, the operation of the polarized electromagnet block 20 is basically the same as that shown in the first embodiment. That is, each time the excitation direction for the coil 34 is changed, the protrusion 23a of the armature 23.
, 24a are biased in either direction of the side legs 32, 33, and the movable block 21 is rotated on a horizontal plane with the pin 39 as a fulcrum.
Rotate in the direction of the arrow at the top. At this time, the support 25
A movable contact piece 41.41 that engages with the arm portion 28°28 rotates synchronously, and the movable contact 42.42 is connected to the fixed contact 44a.

44a, 44b, and 44b.

In the above two embodiments, the permanent magnet 22, the armatures 23, 24, and the iron core 30 are located on the same plane, and in the second embodiment, the plate-shaped portion 26 of the support body 25 slightly overlaps above the coil 34. , and the height is smaller than the conventional one. Further, the permanent magnet 22 is connected to the working gap 3.
Since it is installed near 5.36, magnetic flux leakage is small, high sensitivity can be obtained, and contact driving force is improved.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a conventional polarized electromagnetic block, Fig. 2 is a perspective view showing a first embodiment of a polarized electromagnet block according to the present invention, and Figs. Figures 3 and 4 are partially cutaway plan and front views, Figures 5 are left side views of the internal structure, and Figures 6 and 7 are exploded perspective views. be. 20... Polarized electromagnetic block, 21... Movable block, 22... Permanent magnet, 23.24... Armature, 23a 1241... Projection, 25... Support,
30... Iron core, 31... Middle leg, 32, 33...
Side leg, 34...coil. Patent applicant: Tateishi Electric Co., Ltd. Agent: Patent attorney Hajime Aoyama and 2 others

Claims (1)

[Claims] (1) Consists of a movable block with armatures fixed to both sides of a permanent magnet with a square cross section, a middle leg and a pair of side legs,
an E-shaped iron core with a coil wound around the middle leg, and the movable block and the E-shaped iron core are combined on the same plane so that the protrusion of the armature is located between the middle leg and the side leg; A polarized electromagnetic block characterized in that the movable block is movably supported by a protrusion of an armature between a middle leg and a side leg.