JPS6362853B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention has a permanent magnet interposed in a magnetic circuit composed of an armature and a yoke, and superimposes the magnetomotive force of a coil on the magnetic flux of this permanent magnet, thereby moving the armature horizontally back and forth. The present invention relates to a movable polarized electromagnetic relay, and an object of the present invention is to provide a polarized electromagnetic relay that can be easily assembled and can reduce variations in characteristics of an electromagnetic device.

An embodiment of the present invention will be explained based on FIGS. 1 to 5. This polarized electromagnetic relay has a U-shaped first structure consisting of left and right pieces 2 and 3 whose inner surfaces are polarized surfaces, and a horizontal piece 4 that connects the left and right pieces 2 and 3.
a second yoke 5 which faces the horizontal piece 4 with a length shorter than the distance between the left and right side pieces 2 and 3 of the first yoke 1 and whose left and right outer surfaces are polarized surfaces; A yoke block consists of a permanent magnet 6 which is interposed between two yokes 1 and 5 by adsorption so that the magnetization axis direction is perpendicular to the surface of the second yoke 5, and a coil 11. A winding frame 15 around which the yoke block is fixed
and left and right side pieces 8 and 9 having both inner and outer surfaces facing the armature surfaces of the left and right side pieces 2 and 3 of the first yoke 1 and the armature surface of the second yoke 5, respectively.
an armature 7 consisting of a horizontal bar 10 whose left and right side pieces 8, 9 are movably inserted into holes in the winding frame 15, and a shaft 4 whose both ends are fixed to the winding frame 15;
0 and a reversing lever 39 which is centrally supported by this shaft 40 and whose lower end is connected to the end of the armature 7, integrally constitutes an electromagnet device, and this electromagnet device is attached to a casing ( The contact mechanism 32, 37 is placed at the bottom of the box 12, cover 23) and moved in the same direction as the armature 7 to the top of the casing 12, 23.
A movable base 34 is arranged to open and close the movable base 34.
The reversing lever 3 is inserted into the notch 46 of the lower opening at the end of the
The upper end of 9 is engaged in a swingable manner.

This polarized electromagnetic relay will be explained in detail below.

According to FIGS. 1 to 5, this polarized electromagnetic relay has a first yoke 1 that is U-shaped with left and right pieces 2 and 3 and a horizontal piece 4 that connects the left and right pieces 2 and 3. The left and right side pieces 2 and 3 have inner surfaces of each other as polarized surfaces 2a and 3a. The second yoke 5 has a length shorter than the distance between the left and right pieces 2 and 3 of the first yoke 1, and faces the horizontal surface 4. This second yoke 5
The left and right outer surfaces of the electrodes are used as armature surfaces 5a and 5b. The permanent magnet 6 is interposed between the first yoke 1 and the second yoke 5, and its magnetization axis direction is perpendicular. The first and second yokes 1 and 5 and the permanent magnet 6 are arranged one above the other as one block. The amachia 7 is of a horizontal transition type, and has left and right side pieces 8 and 9, and this left and right side pieces 8 and 9.
It is formed in an H-shape with a horizontal bar 10 connected in series, and both the inner and outer surfaces of the left and right side pieces 8 and 9 serve as armature surfaces 8a, 8b, 9a, and 9b. Inner and outer contact surfaces 8a, 8b, 9a, 9b of these left and right side pieces 8, 9
are the inner and outer contact surfaces 2 of the first and second yokes 1 and 5.
a, 3a, 5a, and 5b, forming air gaps a, b, c, and d, respectively. A horizontal rod 10 of the armature 7 passes through the coil 11.

The magnetic circuit between the permanent magnet 6 and the coil 11 is shown in FIG. 1 as a diagram of the basic principle, and the solid line
is the magnetic flux of the permanent magnet 6, and the dotted line Y is the magnetic flux of the coil 11.
is the magnetomotive flux of

In FIG. 1, the magnetic flux X of the permanent magnet 6 flows as follows.

N pole of permanent magnet 6 → second yoke 5 → air gap b and c → left and right side pieces 8, 9 of armature 7 →
Air gaps a, d→left and right pieces 2, 3 of first yoke 1→horizontal piece 4→S pole.

The magnetic flux Y of the coil 11 flows as follows.

Coil 11 → Horizontal rod 10 of armature 7 → Left side piece 8 → Air gap a → Left side piece 2 of first yoke 1
→ horizontal piece 4 → right side piece 3 → air gap d → right side piece 9 of armature 7 → horizontal rod 10.

Also, from the left side piece 8 of the armature 7 to the air gap b → the second yoke 5 → the air gap c → the right side piece 9 of the armature 7 → the horizontal bar 10.

Therefore, when observing the air gaps a, b, c, and d, we find that the magnetic fluxes X, Y of the permanent magnet 6 and the coil 11 are
Air gaps a and c are in the same direction, and air gaps b and d are in opposite directions.

Therefore, in the first and second yokes 1 and 5 and the armature 7, the magnetic fluxes X and Y overlap in the same direction and an attractive force acts on them, and in the opposite direction, they cancel each other out and a repulsive force acts on them. In FIG. 1, the armature 7 horizontally moves to the left as indicated by arrow Z, and the outer pole surface 8a of the left piece 8 of the armature 7 and the inner pole surface 2a of the left piece 2 of the first yoke 1 are attracted to each other, and further Right side of Amachia 7 9
The inner contact surface 9a of the second yoke 5 and the outer contact surface 5b of the second yoke 5 are attracted to each other.

This attracted state is maintained by the magnetic flux of the permanent magnet 6 even if the current flowing through the coil 11 is interrupted.

When the armature 7 is moved horizontally to the right in the opposite direction to the above, a current is passed through the coil 11 in the opposite direction to the above, and the magnetomotive flux Y is caused to act in the opposite direction to that shown in FIG.

Air gaps a, b, c, and d are reversed to the above, air gaps a and c are in opposite directions, air gaps b and d are in the same direction, and the armature 7 is horizontally shifted to the right as indicated by arrow W.

The attracted state is maintained by the magnetic flux of the permanent magnet 6 in the same manner as described above.

Observing these, the magnetic flux Y of the coil 11
does not pass through the permanent magnet 6, which has a large magnetic resistance, resulting in high sensitivity.

Further, the armature 7 operates independently without fixing the coil 11 and the permanent magnet 6, and its mass is kept to a minimum.

2 to 5 are implementations of the basic principle of FIG. 1.

The upper and lower first yokes 1 are housed in a box 12 made of synthetic resin and open at the top.

In this case, the upper and lower first yokes 1 are 90 mm from Fig. 1.
In the rotated state, it sits on the bottom wall 13 of the box 12, and the left side piece 2 and the horizontal piece 4 are in contact with the side wall 14.

The winding frame 15 of the coil 11 has the following structure.

The coil 11 is wound around a winding trunk 16, and the winding trunk 16 has a hole 17 through which the armature 7 passes.
Side walls 18 and 19 are formed integrally with the winding drum 16 on the left and right sides, and the upper and lower second yokes 5 run parallel to the coil 11 between the left and right side walls 18 and 19, rotated 90 degrees from FIG. It is fixed at The left and right side walls 18 and 19 are provided with cutouts 20 to facilitate fitting and fixing of the second yoke 5. Also,
The right side wall 19 is provided with a groove 21 for inserting a receiving blade terminal fitting 22 to which the coil 11 is connected.

A cover 23 made of synthetic resin is placed over the upper opening of the box 12 and fixed. An insulating plate 24 is interposed between the cover 23 and the box 12.

This cover 23 has the following structure.

The cover 23 connects an upper wall 25, a side wall 26 including lowered side walls, this upper wall 25 and the lower both sides walls 26, and has an external separate 27 divided into a plurality of parts, and an external separate 27 that is the same as this external separate 27. the internal separate 28 of the position, and the internal separate 2
8 and a lower opening cavity 29 which crosses the upper part 8.

External terminal fittings 3 are provided in both outer chambers divided by both side walls 26 and external separates 27 of the cover 23.
It is fixed at 0. This terminal fitting 30 has vertical plug blades 31 integrally formed on both sides of the rightmost end.
When the cover 23 and box 12 are combined, it is inserted into the receiving blade terminal fitting 22 of the coil winding frame 15 to complete electrical connection with the coil 11. The other terminal fitting 30 is provided with a fixed contact 32, which is located in internal chambers 33 on both sides divided by an internal separate 28.

Further, in the cavity 29 of the lower opening of the cover 23, a movable base 34 is located which moves parallel to the armature 7 made of synthetic resin.

This movable table 34 has a through-hole 35 formed at a position corresponding to the inner chamber 33 of the cover 23, and a contact plate 36 with contact points 37 protruding on both sides and a coil for contact pressure are installed here. A spring 38 is provided. The contact point 37 of the movable base 34 and the contact point 32 of the cover 23 face each other in the interior chamber 33, and are separated by the movement of the movable base 34.

The movable base 34 is prevented from falling by the insulating plate 24 described above.

The movable table 34 and the armature 7 are connected by a reversing lever 39.

The reversing lever 39 has a shaft 40 passed through its center, and this shaft 40 is inserted into the shaft hole 4 of the right side wall 19 of the coil winding frame 15.
Supported by 1.

In the relationship between the reversing lever 39 and the armature 7, a shaft 42 is passed through its lower end, the shaft 42 is fitted into the groove 44 of the connecting body 43 from above, and the right end of the armature 7 is inserted into the connecting body 43 to apply the force. It is deformed under pressure and becomes a retaining portion 7b.

The left end of the armature 7 is similarly inserted into the left piece 8 and deformed under pressure to form a retaining portion 7a. At the same time as this prevention, a non-magnetic residual plate 45 is interposed. This plate 45 is provided to cut both ends of the magnetic characteristic curve of the permanent magnet 6 and to use the most stable range.

In the relationship between the reversing lever 39 and the movable base 34, the upper end 39a is hooked onto the cutout 46 of the lower opening.

Therefore, if the armature 7 moves horizontally to the right as indicated by the arrow Z in FIG.
9 rotates counterclockwise around a central shaft 40, and the movable base 34 horizontally moves to the left as indicated by an arrow V opposite to the armature 7, and the contacts 32 and 37 of each chamber are joined. The bonding is maintained by the magnetic flux of the permanent magnet 6 according to the principle diagram shown in FIG.

The armature 7 is pressed in the direction of arrow Z by a chevron-shaped flat spring 47. This angle-shaped flat spring 47 is located at the top 4
7a to the left side retaining part 7a of the armature 7,
Both ends 47b are in contact with the left side wall 14 of the box 12.

The movable base 34 is biased by a coil spring 48 in a direction opposite to the direction of arrow V. This coil spring 48 is connected to the display column 49 of the movable base 34 and the left side wall 2 of the cover 23.
It is located between 6 and 6.

The spring pressures of these two springs 47 and 48 act on the armature 7 and the movable base 34 in opposite directions, so that the armature 7 attempts to move from the state where it is attracted by the magnetic flux of the permanent magnet 6 to the opposite direction. This makes it easier to separate when doing so.

The display column 49 of the movable table 34 is located on the upper wall 2 of the cover 23.
It protrudes from the small hole 50 of No. 5, and the internal operation can be confirmed from the outside at that position.

The upper wall 25 of the cover 23 further includes a terminal cover 5.
1 covers. This terminal cover 51 has driver operating holes 53 for terminal screws 52 in number corresponding to the terminal fittings 30 at both ends thereof.

Also, to install it, put out the hook feet 54 on both sides,
It is inserted into the small hole 55 of the upper wall 25 of the cover 23. Furthermore, covers 23 are provided on both sides of the terminal cover 51.
The terminal fitting 30 is located between the external separators 27 of
A skirt 56 hangs down to minimize exposure.

In the polarized electromagnet device of this embodiment, a permanent magnet 6 is interposed between the first yoke 1 and the second yoke 5, and the first and second yokes 1, 5 and the permanent magnet 6 are connected to each other. Left and right pieces 8 and 9 are arranged vertically as a block and separate from each other while facing the left and right polarized surfaces of the upper and lower first and second yokes 1 and 5, and a horizontal rod that connects these pieces and passes through the coil 11. 10 to form the horizontal transfer type ammature 7, the magnetic flux of the coil 11 does not pass through the permanent magnet 6, and therefore the loss rate of the coil's magnetomotive flux is low, resulting in high sensitivity, and the ammature 7 is a permanent magnet. Without equipping the magnet 6, the mass of the armature is minimized and the operating speed is improved.

Furthermore, yoke 1 is placed above and below centering on Amachia 7.
2 and the permanent magnet 6, vertical and horizontal balance can be maintained, and there is no variation in operating characteristics depending on the mounting direction.

In addition, a horizontally moving type armature 7, yokes 1, 2, coils 11, and permanent magnets 6 are housed in the upper opening box 12, and a horizontally moving type movable base 34, both contact plates 30, 36 is stored and arranged, and the upper and lower armatures 7 and the movable base 34 are connected by a reversing lever 39 with a central pivot, and the armature 7, which is unique to polarized electromagnetic relays, is maintained in that state after operation either on the left or right side. Since this so-called bi-stability is achieved by the springs 47 and 48, it has become possible to implement a horizontal shift type polarized electromagnetic relay.

In addition, this polarized electromagnetic relay has the yoke block, winding frame 15, armature 7, shaft 40, and reversing lever 39 integrated as an electromagnetic device.
Assembly is simple, as the electromagnet device is placed in the box 12, the movable table 34 is placed on top of the electromagnet device, and the cover 23 is placed on the electromagnetic device. Also,
Since the yoke block, armature 7, shaft 40, and reversing lever 39 are positioned by the winding frame 15, each part can be arranged with little variation, and the operation of the electromagnet device can be stabilized. Especially when mass-produced, the characteristics can be maintained. Variations can be reduced.

As described above, the polarized electromagnetic relay of the present invention has a U-shaped structure consisting of the left and right pieces 2 and 3 whose inner surfaces are the polarized surfaces and the horizontal piece 4 that connects the left and right pieces 2 and 3. a first yoke 1; a second yoke 5 that faces the horizontal piece 4 with a length shorter than the distance between the left and right side pieces 2 and 3 of the first yoke 1, and whose left and right outer surfaces are polarized surfaces; the first and second yokes 1 and 5;
A permanent magnet 6 is interposed by adsorption so that the magnetization axis direction is perpendicular to the surface of the second yoke 5.
a yoke block consisting of a yoke block, a coil frame 15 around which a coil 11 is wound and to which the yoke block is fixed, an armature surface of the left and right side pieces 2 and 3 of the first yoke 1, and the second yoke 5. The left and right side pieces 8 and 9 have both inner and outer surfaces facing the armature surfaces of the coil frame 15, and these left and right side pieces 8 and 9 are movably inserted into the hole 17 of the coil frame 15 and connected to each other. An armature 7 consisting of a horizontal bar 10, a pivot shaft 40 fixed at both ends to the coil frame 15, and a reversing lever 39 which is centrally supported by the pivot shaft 40 and whose lower end is connected to the end of the armature 7. integrally constitute an electromagnet device, and this electromagnet device is arranged at the lower part of the casings 12, 23 so that the armature 7 moves horizontally, and the electromagnet device is moved to the upper part of the casings 12, 23 in the same direction as the armature 7. A movable base 34 is arranged to open and close the contact mechanisms 32, 37,
Since the upper end of the reversing lever 39 is swingably engaged with the lower opening notch 46 at the end of the movable base 34, assembly can be simplified, and
This has the effect of reducing variations in the characteristics of the electromagnet device.

[Brief explanation of drawings]

Fig. 1 is a diagram of the basic principle of a polarized electromagnetic relay according to an embodiment of the present invention, Fig. 2 is a sectional view showing its specific structure, Fig. 3 is a cross-sectional side view of Fig. 2, and Fig. 4 is a cross-sectional view showing the specific structure thereof. 2 is a sectional plan view, and FIG. 5 is an exploded perspective view of FIG. 2. 1...First yoke, 2, 3...Left and right sides, 4...
Horizontal piece, 5... Second yoke, 6... Permanent magnet, 7
... Amachia, 8, 9 ... Left and right side pieces, 10 ... Horizontal bar, 11 ... Coil, 12 ... Box, 13
... Bottom wall, 15 ... Winding frame, 23 ... Cover, 3
0, 36... Contact plate, 32, 37... Contact, 34
...Movable base, 39...Reversing lever, 40...Axis,
46... Notch, 47, 48... Spring.

Claims (1)

[Claims] 1 A U-shaped first yoke 1 consisting of left and right side pieces 2 and 3 whose inner surfaces are polarized surfaces and a horizontal piece 4 that connects these left and right side pieces 2 and 3, and this first yoke 1. a second yoke 5 that faces the horizontal piece 4 with a length shorter than between the left and right side pieces 2 and 3 and whose left and right outer surfaces are polarized surfaces; and the first and second yokes 1 and 5.
A permanent magnet 6 is interposed by adsorption so that the magnetization axis direction is perpendicular to the surface of the second yoke 5.
a yoke block consisting of a yoke block, a coil frame 15 around which a coil 11 is wound and to which the yoke block is fixed, an armature surface of the left and right side pieces 2 and 3 of the first yoke 1, and the second yoke 5. The left and right side pieces 8 and 9 have both inner and outer surfaces facing the armature surfaces of the coil frame 15, and these left and right side pieces 8 and 9 are movably inserted into the hole 17 of the coil frame 15 and connected to each other. An armature 7 consisting of a horizontal bar 10, a pivot shaft 40 fixed at both ends to the coil frame 15, and a reversing lever 39 which is centrally supported by the pivot shaft 40 and whose lower end is connected to the end of the armature 7. integrally constitute an electromagnet device, and this electromagnet device is arranged at the lower part of the casings 12, 23 so that the armature 7 moves horizontally, and the electromagnet device is moved to the upper part of the casings 12, 23 in the same direction as the armature 7. A movable base 34 is arranged to open and close the contact mechanisms 32, 37,
This is a polarized electromagnetic relay in which the upper end of the reversing lever 39 is swingably engaged with a notch 46 in the lower opening of the end of the movable base 34.