JPS5914233A - Polarized electromagnetic relay - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Technical Field) The present invention provides a permanent magnet 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 increasing the armature. The present invention relates to a so-called movable polarized electromagnetic relay, and particularly to a polarized electromagnetic relay in which an armature is horizontally reciprocated.

(Background technology) A general polarized electromagnetic relay has a structure in which the center of an armature is rotatably supported, and the armature swings and contacts two armature surfaces of a yoke at diagonal positions. There is.

In the case of a polarized electromagnetic relay of the type ('44 construction), if the three points of both diagonal armature surfaces of the armature and the center pivot shaft are not maintained accurately due to dimensional accuracy, one of the armature surfaces There is a problem in that only the two parts are in contact with each other, and the unbalance of the air gap causes variations in sensitivity and further causes insufficient stroke of the armature.

Therefore, it has already been proposed to solve this problem by adopting a structure in which the armature is horizontally reciprocated.

For example, the first patent application publication method issued by the Japan Patent Office has been proposed.

To explain this with reference to FIG. 7, the upper piece 102, the inner and outer pieces 1
03, the lower piece 104 forms an E-type yoke 101, the inner and outer 1
03 is equipped with a coil 105, and the upper, middle, and lower three pieces 102
, 103, 104, and the permanent magnet 106 that also serves as an armature is faced to each other, and the direction of the magnetic flux from this permanent magnet 106 is the direction indicated by
The direction of the magnetic flux due to 5 is the direction indicated by Y.

Therefore, each month 102, 103, 104 and permanent magnet 106
Both magnetic flux directions X and Y of the gap are opposite to each other, that is, they repel each other, and the permanent magnet 106 as an armature is horizontally moved in the direction of the arrow 2.

Subsequently, when a coil current flows so that the magnetomotive flux direction of the coil 105 is in the opposite direction, it becomes superimposed in the same direction as the magnetic flux X of the permanent magnet 106, and the permanent magnet 106 which is an armature
is attracted.

Here, in the polarized electromagnetic relay according to the first prior art, since the magnetomotive flux of the coil 105 passes through the entire permanent magnet 106, it has the following problem. That is, the magnetic resistance of the permanent magnet 106 is about 10,000 times larger than that of a general yoke (iron), and the loss rate of the magnetomotive flux of the coil 105 is high, which deteriorates (decreases) the sensitivity of the device.
There is a problem with this point.

In order to solve the above problems, French Patent No. 2358006 (hereinafter referred to as the second prior art)
A polarized electromagnetic relay with the following structure has been proposed.

This is an advantage of high sensitivity due to the fact that the magnetomotive flux of the coil does not pass through the permanent magnet.

To explain this according to the vJB diagram, the left and right vertical magnetic pieces 2 (12, 203 and a core (not shown) constitute a U-shaped yoke 201, and a permanent magnet 207 and a permanent magnet 207 that are in contact with one pole of the permanent magnet. The armature block 204 is composed of one magnetic piece 205 and a second magnetic piece 206 in contact with the other pole of this permanent magnet.The first magnetic piece 205 is formed in a U-shape, and its left and right vertical pieces are 208
, 209 are the left and right vertical magnetic pieces 2 of the U-shaped yoke 201.
It faces the outer surface of 02.203. Second magnetic piece 2
06 denotes left and right vertical pieces 202, 2 of the U-shaped yoke 201.
Facing the inner surface of 03, this @l.

A permanent magnet 207 is held between the second magnetic pieces 205 and 206. The coil 210fi is equipped on the U-shaped yoke 201.

In the case of this second prior art, the magnetic flux X (not shown) due to the permanent magnetic flux 207 is transmitted from one pole of the permanent magnet 207 to the first and second magnetic pieces 205 of the armature block 204.
, 206 and return to the other pole of the permanent magnet 207 2
one magnetic path, the second magnetic piece 206 of the armature block 204 from one pole of the permanent magnet 207, and the U-shaped yoke 201.
and flows through a magnetic path that returns to the other pole of the permanent magnet 207 via the first magnetic piece 205 of the armature block 204 . The magnetic flux Y due to the coil 210 is generated by the core (not shown), the right vertical piece 203 of the U-shaped yoke 201 (the left vertical piece 202 when the armature block is reversed), the xm-th magnetic piece 205 of the armature block, and the permanent magnet. 207, it flows through a magnetic path passing through the second magnetic piece 206 and the left vertical piece 2o2 of the U-shaped fJ4 yaw 7201 (or the left vertical piece 2o3 when the armature block is reversed).

Therefore, the armature block 204 and the U-shaped yoke 20
Both magnetic flux directions x, y (
(not shown) are repelled when they are in opposite directions, and are attracted when they are in the same direction, so the armature block 204Vi and coil 210 move horizontally to the left and right depending on the current direction of the coil 210.

As is clear from the figure, this second prior art has a permanent magnet 2
The magnetic flux Y (not shown) of the coil 210 does not flow through the coil 210, which solves the problem in the first prior art.

However, this second prior art has problems due to the adoption of a structure in which a permanent magnet is fitted into the armature block.

That is, since there is a permanent magnet in the armature block driven by the contact K IftJ+, the output speed of the armature block is slow by the weight of the permanent magnet 207.
Furthermore, since the size of the block increases, the impact force increases and vibrations are promoted. Furthermore, due to the relationship with gravity, the characteristics become unbalanced depending on the mounting direction.

Other problems with this second prior art are as follows. That is, since the chisel yoke 201 is present on the upper part of the armature block 204, and the armature block 204 requires an allowable space above and below the guide during its horizontal reciprocating movement,
This point is drawn toward the yoke 201 due to the spatial phase separation.

Therefore, depending on the mounting condition, the direction of the yoke 201 changes, and the characteristics become unbalanced as described above due to the in-position of the armature block 204.

Moreover, the implementation of horizontal reciprocating movement of the armature in a polarized electromagnetic relay has not yet been disclosed and is not easy.

As the prior art of @3, for example, US Patent No. 279488
There is a specification No. 2, which is a so-called non-polar electromagnetic relay that is not equipped with a permanent magnet.

(Purpose) The present invention solves the problems associated with conventional polarized electromagnetic relays, and at the same time improves the production of polarized electromagnetic relays.
It also provides a polarized electromagnetic appliance that is advantageous in application. According to the present invention, a permanent magnet is interposed between the first yoke and the second yoke, and the 1S second yoke and the permanent magnet are arranged vertically as one block, and the upper and lower 11th and 2nd yokes are arranged on the left and right sides. A new development was achieved by taking advantage of the advantages of a horizontally shifting armature by connecting the left and right side pieces that face and separate from the armature surface, and forming a horizontally shifting armature with a horizontal rod that passes through the coil. will be possible.

Another object of the present invention is to configure one armature surface of the second yoke to be wider than the other armature surface, so that electrical
Improve mechanical conversion efficiency.

Another object of the present invention is to reduce the loss rate of the magnetomotive flux of the coil by preventing the magnetic flux of the coil from passing through the permanent magnet, thereby achieving high sensitivity.

Another object of the present invention is to minimize the mass of the armature by not equipping the armature with a permanent magnet, thereby increasing the speed of the armature.

Another object of the present invention is to maintain balance by arranging yokes and permanent magnets above and below the armature, thereby preventing variations in the 11 action characteristics due to the mounting direction.

Another object of the present invention is to implement a shaped electromagnetic relay of the type in which the armature is moved horizontally.

According to FIGS. 1 to 5, this variable type electromagnetic relay includes a first yoke lVi left and right side pieces 2.3, and these left and right side pieces 2,3.
The left and right side pieces 2.3 have inner surfaces 2a and 3a as polarized surfaces 2a and 3a. The second yoke 5 is the left and right side pieces 2 of @l yoke l.
It faces the horizontal piece 4 with a length shorter than 3. The left and right outer surfaces of the second yoke 5 are polarized surfaces 5a and 5b.

Moreover, by bending one end of the @2 yota 5 into a Ly shape, one armature surface 5b is configured to be wider than the other armature surface 5a. The permanent magnet 6 is interposed between the first yoke l and the second yoke 5, and its magnetization axis direction is perpendicular. The eleventh second yoke 1, 5, and permanent magnet 6 are arranged one above the other as one block. The armature is a 7-piece horizontal transition type, and is formed into an H shape with left and right side pieces 8.9 and a horizontal bar 10 that connects these left and right side pieces 8.9, and the inside and outside of the left and right side pieces 8.9. Both sides are polarized surfaces 8a, 8b, 9a, 9
b. The inner and outer contact surfaces 8a of the left and right side pieces 8.9,
8b, 9a, and 9b are the first. @2 Opposing the inner and outer contact surfaces 2a, 3a, 5a, and 5b of the yokes i and s, forming air gaps a, b, c, and d, respectively. A horizontal rod 10 of the armature 7 passes through the coil 11.

Therefore, the magnetic rotation FPJ between the permanent magnet 6 and the coil 11
It is shown in FIG. 1 as a diagram of the basic principle of tri, where the solid line X is the magnetic flux of the permanent magnet 6, and the dotted line Y is the magnetomotive flux of the coil 11.

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 pieces 8, 9 of armature 7 → air gap a
, d−+ left and right side pieces 2°3 of the first yoke 1→horizontal piece 4→S
Become the pole.

The magnetic flux Y of coil]1 flows as follows.

Coil ll - horizontal rod IO of armature 7 → left outer piece 8 →
Air gap + left side piece 2 of first yoke l → horizontal piece 4 →
Right piece 3 → air gap d → 7-r right side of chaff 9
→It becomes horizontal forest lO.

Also, from the left side piece 8 of the armature 7 to the air gap b-@2
Yoke 5 → Air gap c → Right side of armature 7 9 →
It also becomes the horizontal bar lO.

So, when we observe the air gaps a, b, C, and d, we find that
The magnetic fluxes X and Y of the permanent magnet 6 and the coil 11 are in the same direction in the air gaps a and C, and in the air gap b.
, d are in opposite directions.

Therefore, the magnetic fluxes X and Y of the 11th second yoke 1.5 and the armature 7 are superimposed 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. Then, the armature 7 horizontally moves to the left as indicated by the arrow Z, and the outer contact surface 8a of the left side piece 8 of the armature 7 and the left side piece 2 of the first yoke l
The inner contact surface 2a of the armature 7 is attracted to the right side 9 of the armature 7.
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 cut off.

When moving the armature 7 gold horizontally to the right, contrary to the above, a current in the opposite direction to the above melting is passed through the coil 11, and the magnetic flux Y
is made to act in the opposite way to that in Figure 1.

Air gaps a, b, c, and d are reversed from the above, and air gaps a and C are in the opposite direction, air gap b,
d, the armature moves in the same direction, and the armature 7I/''i moves horizontally to the right as indicated by the arrow W.

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

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

Moreover, the armature 7 performs independent operation 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 are housed in a box 12 made of synthetic resin that is open at the top.

In this case, the upper and lower first yokes 1 are rotated 90 degrees from FIG. 1 and sit on the bottom 913 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, and side walls 18 and 19 are integrally formed with the winding trunk 16 on the left and right sides. side wall 1
8. The upper and lower second yokes 5 are rotated 90 degrees from FIG. 1 and fixed in parallel with the coil 11 for a period of 8.19 seconds. The left and right side walls 18 and 19 are provided with notches 20 to facilitate fitting and fixing of the frame 2 yoke 5. or,
On the right side wall 19 is a receiving blade terminal fitting 2 to which the coil 11 is connected.
2 is provided with a groove 21 for inserting and equipping.

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

This cover 23 has the following structure.

The cover 23 has an upper wall 25, a side wall 26 including lowered side walls, and an external separate 27 which is divided into a plurality of parts, and an external separate 27 that is the same as the external separate 27. It consists of an internal separator (L/-) 28 and a lower opening cavity 29 that crosses this internal separator (L'-) 28.

External terminal fittings 30 are fixed to both outer chambers divided by both side walls 26 and external separates 27 of the cover 23. This terminal fitting 3 () has vertical plug blades 31 integrally formed on both sides of the rightmost pane, and when the cover 23 and box 12 are combined, the terminal fitting 3 ( ) has a receiving blade terminal fitting of the coil winding frame 15. 22 to complete electrical connection with the coil 11. The other terminal fittings 30 are provided with fixed contacts 32,
It is located in internal chambers 33 on both sides divided by internal separates 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 base 34 has a through hole 35 formed at a position corresponding to the inner chamber 33 of the cover 23, and a contact plate (6) and a contact plate (6) provided with contacts 37 protruding from both sides thereof. A phase coil spring 38 is provided.The contact point 37 of the movable base 34 and the contact point 2 of the cover 23 face each other in the inner chamber 33, and are separated when the movable base 34 moves.

The fall of the movable base 34 is prevented by the insulating plate 24 above L7.

The 901 unit 34 and the armature 7 are connected by a reversing lever 39.

A shaft 4o passes through the center of the reversing lever 39, and this shaft 40 is supported in a shaft hole 41 in the right side wall 19 of the coil winding frame 15.

In the relationship between the reversing lever 39 and the adjustment chaff, a shaft 42 is passed through its lower end, this shaft 42 is fitted into the connecting body 44 from above, and the right end of the armature 7 is inserted into the connecting body 43. It is deformed under pressure and is pulled out with the stopper part 7b.

The left end of the armature 7 is similarly inserted into the left piece 8 and is deformed under pressure to form a stopper 7a. At the same time as this removal is stopped, a non-magnetic regular plate 45 is interposed. This plate 45 is provided to cut both ends of the magnetic field 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 thereof is hooked into a notch 46 at the lower opening.

Therefore, if the armature 7 is released in FIG. The contact points 32 and 37 of each chamber are joined horizontally to the left as indicated by the arrow ■ opposite to the above.

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. The top portion 47a of this mountain-shaped flat spring 47V-1 is placed against the stop portion 7a when the armature 7 is pulled out on the left side, and both ends 47b are placed against the left side wall 14 of the box 12.

It is pressed in a direction opposite to the direction of arrow V by a 34-piece coil spring 48. This coil spring 48 is attached to the movable base 34
It is located between the display column 49 and the left side wall 26 of the cover 23.

The spring pressures of these two springs 47 and 48 act on the armature 7 and the movable base 34 in opposite directions, and the armature 7 shifts from the state where it is attracted by the magnetic flux of the permanent magnet 6 to the opposite direction 1- This makes it easier to separate when you try to use it.

The display pillar 49 of the 901 machine 37 protrudes from the small hole 50 of the upper wall 25 of the cover 23, and from that position, the internal operation can be confirmed from the outside.

The upper wall 25 of the cover 23 is further covered with a pant cover 51. This terminal cover 51 has driver operation holes 53 for terminal screws 52 in number corresponding to the terminal fittings 30 on both sides.

Also, put out the mounting hook feet 54 on both sides and attach the cover 23.
It is inserted into the small hole 55 of the upper wall 25 of the.

Further, on both sides of the terminal cover 51, skirts 56 are suspended between the outer separators 27 of the cover 23 to minimize exposure of the terminal fittings 30.

FIG. 6 shows the state of alignment between the magnetic attraction force of the polarized electromagnetic relay configured as shown in FIGS. 2 to 5 and the spring load of the springs 47 and 48. In FIG. 6, the curve shows the attractive force characteristic of the coil 11 in the rated excitation state, the curve B shows the attractive force characteristic of the coil 11 in the moving excitation state, and the curve C shows the attractive force characteristic of the coil 11 in the open excitation state. , and the curve is coil 11
De-energized state! This shows the attraction force characteristics on the island. Also curve E
indicates spring load. Furthermore, in FIG. 6, the left end shows the position where gaps a and C are closed, and the right end shows the position where gaps b and d are closed.

As is clear from FIG. 6, when the coil 11 is in a non-excited state, the armature 7 is stabilized with gaps a and d closed, and when a voltage of 11 Vc and eh is applied to the coil 11, the armature 7
closes gaps b and d. Furthermore, from this state, when the voltage applied to the coil 11 is lowered to below the open circuit voltage, the armature 7
returns to the state where gaps a and C are closed. That is,
Since one armature surface 5b is widened, the magnetic flux of the permanent magnet 6 at one end of the second yoke 5 becomes strong, and the current in the coil 11 is cut off when the armature 7 moves in the direction of arrow W. Then, the strong magnetic flux causes the armature 7 to move back in the direction of arrow Z. Therefore, it becomes a monostable electromagnetic relay with high electrical-mechanical conversion efficiency.

(Effects) As described above, the present invention interposes the permanent magnet 6 between the first yoke l and the second yoke 5, and the permanent magnet 6 is interposed between the first yoke l and the second yoke l.
5 and permanent magnet 6 are arranged vertically as one block, and these are connected to the left and right pieces 8.9 that face and separate from the left and right armature surfaces of the upper and lower eleventh and second yokes 1.5. At the same time, the horizontal rod lO passing through the coil 11 connects the horizontally moving armature 7 (i: because it was not done, the coil 11 is connected to the permanent magnet 6.
Therefore, the loss rate of the magnetomotive flux of the coil is low, resulting in high sensitivity, and the armature 7 is not equipped with a permanent magnet 6, and 1. This minimizes the mass of the armature and improves operating speed. Furthermore, since one armature surface 5b of the second yoke 5 is made wider than the other armature surface 5b,
A monostable electromagnetic relay with high electrical-mechanical conversion efficiency is realized.

Further, in the present invention, since the yokes 1.2 and the permanent magnets 6 are placed above and below the armature 7, the balance between the top and bottom and left and right sides can be maintained, and there is no fluctuation in the operating characteristics depending on the direction of picking.

Further, according to the present invention, a horizontally moving armature 7, a yoke 1.2, a coil 11. The permanent magnet 6 is housed and arranged, and the movable table 3 of the horizontal movement type is installed in the lower opening cover 23.
4. Both contact plates 30 and 36 are housed 1'f lF, f, and the upper and lower armatures 7 and the stand 34 are connected by a centrally supported reversing lever 39, which is especially unique to polarized electromagnetic relays. Since the so-called bistable state in which the armature 7 maintains its state after being operated either to the left or to the right is achieved by the springs 47 and 48, there is an effect that a horizontal shift type polarized electromagnetic relay can be implemented.゛

[Brief explanation of the drawing]

1 to 6 show an embodiment of the polarized electromagnetic relay of the present invention, in which FIG. 1 is a diagram of the basic principle, FIG. 2 is a sectional view of a concrete structure, and FIG. 4 is a sectional side view, FIG. 5 is an exploded perspective view, FIG. 6 is a diagram of the matching state of magnetic attraction force and spring load, and FIGS. 7 and 8 are conventional examples. . l...First yoke, 2.3...Right and left pieces, 4...Horizontal piece, 5...Second yoke, 5a, 5b...Archive surface,
6... Permanent magnet, 7... Armature, 8.9... Left and right pieces, lO... Horizontal bar, ll... Coil, 12...
・Box, 13... Bottom wall, 15... Winding frame, 23.
...Cover, 30.36...Contact plate, 32.37...
・Contact, 34...Movable base, 39...Reversing lever, 4
7.48...Spring. Agent Patent Attorney Kei Nishi Department Figure 1 Figure 2 Figure 3 Figure 4 Figure 6 Ily Armature 7-4 Hyperactivity Figure 7 Figure 8

Claims (1)

[Scope of Claims] [1] A U-shaped first yoke consisting of left and right side pieces whose inner surfaces are polarized surfaces and a horizontal piece connecting these left and right side pieces, and a U-shaped first yoke that is shorter than the distance between the left and right side pieces. A second yoke that faces the horizontal piece along its length, has its left and right outer surfaces joined to the armature surfaces, and has one armature surface wider than the other armature surface, and the horizontal section of the first yoke and the second yoke. The first yoke, the second yoke, and the permanent magnets are arranged vertically as one block, and the first yoke and the
It is a horizontally transition type armature that separates from each armature surface of the yoke and the vJ2 yoke. A coil formed of left and right pieces with both side surfaces as contact surfaces and a horizontal rod connecting these left and right side pieces, and a coil through which the horizontal rod of the armature is inserted so as to be horizontally movable;
1. Second side, the permanent magnet and the armature are stored in a box with a bottom opening so that the armature moves horizontally against the bottom wall of the box, and a horizontally moving type movable table and a plurality of A contact plate with individually equipped movable contacts and this
a contact plate of a fixed contact that is connected to a contact point;
One unit, the contact plate of both contacts is stored in the cover of the lower opening,
A reversing lever whose upper and lower ends are reversed about a central axis is arranged across the box and the cover, the upper end of this reversing lever is linked to the movable base, the lower end is linked to the armature, and the armature and movable base are linked. A polarized electromagnetic relay characterized by having springs acting in the same direction on each side. [21#J] The polarized electromagnetic relay according to claim 1, wherein one end of the second yoke is bent into an L-shape.