JPS58209837A - 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 involves interposing a permanent magnet in a magnetic circuit composed of an armature and a armature, and causing the magnetic flux of the permanent magnet to receive the magnetomotive force of the coil. The present invention deals with so-called polarized electromagnetic relays that move the armature, and particularly relates to magnetic relays that move the armature up and down.

(Background technology) A general polarized electromagnetic relay has a structure in which the center of an armature is pivoted to rotate freely, and the armature swings and contacts the two armature surfaces of the yoke at the opposite angle position. I'm taking it.

In a polarized electromagnetic relay with such a structure, if the eight points between both diagonal armature surfaces of the armature and the center pivot shaft are not maintained accurately due to dimensional accuracy, only one armature surface will come into contact. This phenomenon occurs and there is a problem in that the unbalance of the air gap causes sensitivity variations and further causes insufficient stroke of the armature.

Therefore, by adopting a mechanism that raises and lowers this armature, this problem can be completely solved by J.
It has been made into M.

For example, Patent Application Publication No. 41005 of 1980 issued by the Japan Patent Office (hereinafter referred to as the first prior art) has been proposed. In the figure, there is a horizontal reciprocal transition.

To explain this with reference to FIG. 8, an E-shaped yoke 101 is formed by the vertical piece 102, the middle vertical piece 10B, and the right vertical piece 104,
The middle vertical piece tOa is equipped with a coil 105, and the upper, middle, and lower 8
Permanent magnets 106 that cover one armature common to the vertical pieces 102, 10B and 104 are flushed against each other, and the direction of magnetic flux from this permanent magnet 106 is the direction indicated by X, and the direction of the magnetic flux from the coil 105 is Y. The direction is shown by .

Therefore, each vertical piece 102, tOa, 104 and the permanent magnet 10
The eastward directions x and Y of the gap with 6 are opposite to each other, that is, they repel each other, and the permanent vJ stone 106 as an amateur is lowered in the direction of the arrow l.

Subsequently, when the coil current flows so that the magnetic east direction of the coil 1 (2) 6 is opposite, it becomes the same direction as the magnetic flux Y of the permanent magnet 106, and the permanent magnet 106, which is an armature, becomes ML. It gets sucked in.

In the polarized electromagnetic relay according to the first prior art, the magnetic flux of the coil 105 is j
lff, so it has the following problem.

In other words, the magnetic resistance of the permanent magnet 106 is about 1 times larger than that of a general yoke (iron), and the loss rate of the magnetomotive flux of the coil A/105 is also high. There's a problem.

In order to solve the above problems, a polarized electromagnetic relay having a structure as disclosed in French Patent No. 2858006 If' (hereinafter referred to as the second prior art) has been proposed.

This is a development of the advantage of high sensitivity due to the magnetomotive flux of the coil not passing through the permanent magnet.

To explain this according to FIG. 4, the upper and lower magnetic pieces 202
．． 208 and the core 210a together with the U-shaped yoke 201
The armature block 204 includes a permanent magnet 207, a first magnetic piece 205 in contact with one pole of this permanent magnet, 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 upper and lower m-outer pieces 208 and 209 face the upper and lower outer surfaces of the upper and lower magnetic pieces 202 and 208 of the U-shaped yoke 201. The second magnetic piece 206 faces the upper and lower inner surfaces of the upper and lower magnetic pieces 202.20B of the U-shaped yoke 201, and the permanent magnet 207 is held between the eleventh and second magnetic pieces 205,206.

Coil 210 is attached to U-shaped yoke 201.

In the case of this second advance technique, the magnetic flux X due to the permanent magnetic flux 207 (5) is transmitted from one pole of the permanent magnet 2 ( ) 7 to the first and second magnetic pieces 15.206t of the armature block 204 =
The second magnetic piece 206 of the armature block 204, the U-shaped yoke 201, and the armature block 204 are The magnetic flux flows through the magnetic path returning to the other pole of the permanent magnet 207 via the first magnetic piece 205, and the magnetic flux from the coil 210 is transmitted to the upper and lower magnetic pieces 208 of the core-210a U-shaped yoke 201 (lower when the armature block is reversed). muscular piece 202), armature block #1
It flows through a magnetic path passing through the first magnetic piece 205, the permanent magnet 207, the second magnetic piece 206, and the 'F magnetic piece part 202 of the U-shaped yoke 201 (the upper magnetic piece part 20B when the armature block is reversed).

Therefore, the armature block 204 and the 0-character M yoke 20
Both magnetic flux directions X, Y in each Wi pole gap of 1
If they are in opposite directions, they will be repelled, and if they are in the same direction, they will be attracted, so the armature block 204
It moves up and down depending on the current direction of 0.

(6) As is clear from the figure, this second prior art uses a permanent magnet 2
07, the magnetic flux Y of the coil 210 does not flow to the first
This solves the problems in the prior art.

However, this second prior art fO- has other problems due to the adoption of a structure that includes a permanent magnet in the armature block.

That is, since there is a permanent magnet in the armature block that is driven to drive the contact point, the operating speed of the armature block is slow due to the weight of the permanent magnet 207, and the impact force increases due to the increase in the size of the block. Vibration is promoted. Also, due to the relationship with vehicle power, the characteristics may become unbalanced depending on the mounting direction.

Also, it is possible to move the armature up and down.
The implementation of this method in electromagnetic pure electric appliances has not yet been disclosed and is not easy.

As prior art of Yuki 8, for example, U.S. 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 relay that is advantageous in applications. According to the present invention, a permanent magnet is interposed between the first yoke and the second yoke. , and the vertical rod that penetrates the fill: By forming a downward elevating type armature, current development can be made by utilizing the advantages of the vertical elevating type armature.

Another object of the present invention is to reduce the loss rate of the magnetomotive flux of the coil by not passing the ei east of the coil through the permanent magnet, thereby achieving a high dlrJ.

Another object of the present invention is that the d1 armature is not equipped with a permanent magnet; 1. The quality of the amateur was minimized and the speed of the amateur's movement was moderated.

Another object of the present invention is to implement a polarized type i11lI7'i joint that moves the armature up and down.

According to FIGS. 1 and 182, FIG. The vertical piece 4 is formed into a U-shape, and the upper and lower inner surfaces of the upper and lower pieces 2.3 serve as armature surfaces 2a and 3a. second yoke 5
Ha+! 81 The length is shorter than the length between the upper and lower pieces 2 and 3 of the yoke 1,
It faces vertical piece 4. The upper and lower outer surfaces of the second yoke 5 are used as armature surfaces 5a and 5b. The permanent magnet 6 is interposed between the 181 yoke l and the second yoke 2, and its magnetization axis direction is horizontal. This first. Although the second yoke 1.5 and the permanent magnet 6 are arranged as one block on the left and right sides, it is of course possible to use only one block. The armature 7 has an upper and lower outer shell type, and is formed into an H shape with upper and lower pieces 8 and 9 and a vertical bar 10 that connects the upper and lower pieces 8.9.
The upper and lower inner and outer surfaces of the electrodes are used as armature surfaces 8a, 8b, 9a, and 9b. The upper and lower inner and outer contact surfaces 8a and 8b of the upper and lower pieces 8.9
, 9a and 9b are the $1. The upper and lower inner and outer contact surfaces 2m, 3m, 5a and 5b of the second yoke 1.5 face each other and form air gaps a, discharge, c and d, respectively. A vertical bar 10 of the armature 7 passes through the coil 11.

The magnetic circuit between the permanent magnet 6 and the coil 1 is shown in Figure 1 as a basic principle diagram, and the solid line X indicates the permanent magnet 6.
The dotted line Y is the magnetic flux of the coil ]1.

In FIG. 1, the magnetic flux X of the Mizuku magnetic ej6 flows as follows.

NJ of permanent magnet 6 - second yoke 5 - air gap b and C - upper and lower pieces of armature 7 8.9 - air gap H,
d-1 - Upper and lower pieces 2.3 of the first yoke 1 - Vertical pieces 4 - 8 poles.

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

Coil 11-'-Length mama chaff O-'--Piece 8-Air gap a-JJ41 wire] Lower piece 2-1
1 becomes piece 4 - upper piece 3 - air gap d - upper piece 9 of armature 7 - vertical bar] 0. Also, air gap b - J - $ from lower piece 8 of armature 7
2 Yoke 5 - Air gap C - Upper piece of armature 7 t)
It also becomes a vertical bar 10.

(10) Then, when observing the air gaps a, b, c, and d, the magnetic fluxes X and Y of the permanent magnet 6 and the coil 1 are in the same direction for the air gap a%C, and for the air gaps b and d. They are in opposite directions.

Therefore, the first and second yokes 1.5 and the armature 7 are subjected to double-sound attraction force in the same direction of magnetic fluxes In Figure 1, the armature 7 descends in the downward direction shown by arrow 2, and the armature 7
The external contact surface 8a of the lower piece 8 and the internal contact surface 2a of the lower piece 2 of the first yoke 1 are absorbed, and the internal contact surface 9a of the upper piece 9 of the armature 7 and the external contact surface of the 1182 yoke 5 are in contact with each other. The polar surface 5b is clearly visible.

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

When raising the armature 7 upwards in the opposite direction to the above,
A current in the opposite direction to the above is passed through the coil 11, and the magnetic flux Y is reduced to 1.
It acts in the opposite way to i8119.

Air gaps a, b, c, and d are reversed to the above, air gaps a and c are in opposite directions, air gears a and d are in the same direction, and armature 7 is directed upward as indicated by arrow W.
-To speak.

@The maintenance of no destination station is achieved 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 with high magnetic resistance, and 1IiI
It becomes I sensitivity.

Figure s2 is an implementation of the basic principle of Figure 1.

The left and right $1 yokes are stored in boxes made of synthetic resin with openings at the top.

In this case, the left and right sugar 1B-ri] is the bottom wall 1 of box]2.
3 and is surrounded by one and four side clasps 04.

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

The coil 1 is wound around a body part 16, and the body part 16 has a hole 17 through which the armature 7 is inserted so as to be able to rise and fall freely.
The upper and lower parts are integrated with the I# body part 16 and the flange] 8 and the circumference wall 19.
form. This upper and lower rotation edge 19J is located at the two lower pieces 2.3 of the S1 yoke 1 and the upper and lower pieces 8, 9 of the armature 7. Further, an I82 yoke 5 and a permanent magnet 6 are arranged along the winding frame 15.

An angle-shaped flat spring 20 is seated on the bottom wall 13 of the box 2, and the lower piece 2 of the 9A1 yoke is placed on it.

Naturally, the armature 7 is located at the top 20a of this angle-shaped half-plate spring 20.
The lower wheat faces each other with the stop portion 7a facing downward.

The upper opening of the box 12 is covered with a cover 21 made of synthetic resin and having an open bottom.

This cover 21 has the following structure.

The closed portion of the cover 21 communicates with the upper opening of the box 12;
The lower piece 23 of the U-shaped transport body 22 is connected to this cover 21 by the upper pull-out stop part 7b of the armature 7.
182 angle-shaped flat springs 25 are inserted through the small holes 24 of the cover 21, and both ends 25b of the flat springs 25 are placed against the receiving stages 26 of the cover 21. This angle-shaped flat spring 25 acts on the armature 7 and a movable table 27 that is vertically movable on the same axis as the armature 7. Therefore, the lower chevron-shaped flat spring 20 is always in the armature (]
3) 7 and 1/1 unit 27 are pressed upward 101, and the upper chevron-shaped flat spring 25 is pressed downward. The movable base 27 and the connecting body 22 are connected to each other through the shaft holes 2 of both side pieces 23 of the connecting body 22.
8 and the shaft hole 29 of the movable table 27 . The box 12 and the cover 21 are connected by connecting screws 3].

Further, the cover 21 is equipped with terminal metal J433 having fixed contacts 32 on the left and right sides. A movable contact plate 35 of a movable contact 34 is housed in a long hole 36 of the movable base 27 along with a contact pressure spring 37 corresponding to the left and right fixed contacts 32 .

(Effects) The present invention has the above-mentioned structure.
A permanent magnet 6 is interposed between the ff11. Second
This is because the vertical lifting type armature 7 is formed by the upper and lower pieces 8.9 that face the upper and lower contact surfaces of the yoke 1.5 and separate and separate, and the vertical rod 10 that connects these pieces and carries the coil 11 at true speed. , the magnetic flux of the coil 11 does not pass through the permanent magnet 6, and the loss rate of the magnetomotive flux of the coil becomes low, resulting in a high static state of 1 degree. fffi is minimized and the operating speed is improved.

Furthermore, the present invention includes a box 12 with an upper opening and a cover 2 with a lower opening.
The first and second yokes 1.5, armature 7, coil winding frame 15, etc. are housed in the 1 and 1, and the state of the armature 7, which is unique to a 1° polarized electromagnetic coupling, is either upper or lower after operation. Because the so-called bistable holding is achieved by the spring 20.25, it has the effect of making it possible to implement a vertically rising and falling type polarized 1M magnetic relay device.

[Brief explanation of the drawing]

[Fig. 7II] Fig. 7 to Fig. 2 show one embodiment of the present Denmei polarized electromagnetic relay, Fig. 881 is a diagram of the basic principle, Fig. 2 is an 'Ilr side view of a concrete structure, and Fig. 183 is a diagram of the basic principle. Figure and 4th
The figure is a diagram of a conventional example. ]...First yoke, 2...Lower piece, 3...Upper piece, 4
... Vertical piece, 5... Second yoke, 6... Permanent magnet,
7... amateur, 8... lower piece, 9... upper piece, 10
...Vertical piece, ]]...Coil, ]2) Box, 13
...Bottom wall, 14...Side wall, 15...Reeling frame, 20,2
5... Spring, 21... Cover 15°, 27... Movable base. Patent Kojiri 1 person Matsushita Electric Works Co., Ltd. Daikonjinben 1 (11th person Takehiki Toshimaru (2 idiots)] 6) Figure 1 Figure 2

Claims (1)

[Claims] A U-shaped first yoke consisting of upper and lower pieces whose upper and lower inner surfaces are polarized surfaces and a vertical piece connecting these upper and lower pieces, and a vertical piece with a length shorter than the distance between the upper and lower pieces. a second yoke which faces the yoke and whose upper and lower outer surfaces are polarized surfaces; a permanent magnet whose magnetization axis direction is horizontal between the vertical piece of the first yoke and the second yoke; This armature is a vertically lifting type armature that separates from the inner and outer pole surfaces of the first yoke and the second yoke, and this armature has inner and outer poles that face the armature surfaces of the upper and lower pieces of the first yoke and the armature surfaces of the 21E1-. A coil consisting of upper and lower pieces with both sides as polarized surfaces and a vertical bar connecting these upper and lower pieces, and the vertical bar of this armature moves up and down by NM1, a separate coil, a 11th 2nd yoke, a permanent magnet, and an armature. The armature is stored in a box with an opening at the top so that it can move up and down perpendicularly to the bottom wall of the box, and further above (1) there is a downward-lifting movable table and an If mover equipped with +i (several vjIs on the moving table). The contact plate of the contact, the contact plate of the fixed contact that separates from the pJ moving contact, the front H1 and 11 moving base, both Yt points, and the contact plate of both contacts are placed on the lower opening cover on the same axis as the armature of the box. The movable base was housed at a distance of about 1m, and the armature and 04w1 were connected to a connecting body located in the middle river, and springs were applied to the armature and mouth J movable base in opposite directions. Features a polarized type [magnetic relay].