JPS5925331B2 - polarized electromagnetic relay - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a polarized electromagnetic relay, and an object thereof is to provide a polarized electromagnetic relay that is thin overall, consumes less power, and can set a large contact interval. be.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings showing embodiments thereof.

In Figures 1 to 5, 1 is a first insulator made by insert-molding a U-shaped iron piece 2, and 5 is a second insulator made by insert-molding two L-shaped iron pieces 6 and 6, which are obtained by dividing the U-shaped piece into two. Permanent magnets 8 and 9, each of which is magnetized with two poles on one side, are attached to the upper and lower surfaces of the above-mentioned cross-shaped iron piece 6゜6, which are insulators, and are attached to opposing surfaces, respectively, and a card is attached to the lower surface of the tip of the second insulator 5. Part 1
0.10 is provided integrally.

Further, a cylindrical projection 3.3 is provided on the lower surface of the first insulator 1, and this projection is provided in the second insulator 5.
．． 11 and ultrasonic welding or thermal caulking, both insulators 1.5 are integrated to form armature A.

In the integrated state as described above, the magnetic pole faces 2a s6a, 6a of the iron pieces 2.6.6 are vertically opposed to each other at a predetermined angle.

15 is a U-shaped fixed iron core, 17 is a spool fixed to the center of the iron core 15, and a coil 19 is wound around the body of the spool 17.

Both ends 16.16 of the iron core 15 are inserted into the opening of the armature A, and their tips 16a, 16a protrude slightly from the end 12 of the armature A, and the upper and lower surfaces of both ends 16.16 of the iron core 15 are Amateur A's iron piece 2 above
．． 6.6 magnetic pole face 2a-5a s6a.

The armature A is supported at its end 12 by both ends 16, 16 of the iron core 15, and is swingable at a predetermined angle.

22 is a movable contact piece 2 which is bent into a shape and has a spring property.
3.23 is insert molded into a movable contact piece block,
The external terminal portion 24.24 of the movable contact piece 23.23 projects laterally, and a stepped portion 25 is formed on the outer periphery and recessed portions 26.26 are formed on both sides of the inner surface.

Further, a claw portion 27 is provided on the upper portion, and a cylindrical projection 28 is provided on the lower surface.
28 are integrally molded.

Reference numeral 30 denotes a fixed contact piece block which is insert-molded to cover two fixed contact pieces 31.31 and two coil terminals 34.34, and the fixed contact piece and the coil terminal are placed on the side of one block part 37. External terminal portions 32 and 35 protrude from the block portion 37, and a circular hole 38 and a claw portion 3 are formed in the block portion 37.
9 and a stepped portion 40 are formed.

Further, a coil terminal 34 is provided on the top surface of the other block portion 41.
．． An end 36.36 of 34 protrudes, and a positioning step 4 is provided on the inner surface to engage with the collar 18.18 of the spool 17.
2 is formed.

Then, by fitting the protrusion 28 of the movable contact piece block 22 into the circular hole 38 of the one block portion 37 and performing ultrasonic welding or heat caulking, the movable contact piece block 2
2 and the fixed contact piece block 30 are integrated, and the fixed contacts 38 and 38 provided on the upper surface of the fixed contact pieces 31 and the tips of the movable contact pieces 23 and 23 face each other with a predetermined interval.

Here, the electromagnet section constructed by inserting the iron core 15 into the armature A is integrated into both blocks 22 and 30.
When the armature A is fitted into the armature A, the end face of the armature A comes into contact with the inner face of the movable contact piece block 22, and the tip 1 of the iron core 15
6a fits into the recess 26, and the flange 18 of the spool 17
is positioned by engaging with the inner surface and step portion 42 of the block portion 41 of the fixed contact piece block 30.

In this state, the drawn-out portion of the coil 19 is connected to the end 36vc of the coil terminal 34, and the card portion 10 of the amateur A comes into contact with the upper surface of the movable contact piece 23.23.

45 is a cover made of synthetic resin, and the fixed contact piece block 30
The open ends of the movable and fixed contact piece blocks 22 and 30 are covered from the block portion 41 side.
At the same time, the claw portion 27 of the block 22.30 is positioned at the four portions 46.47 provided on the inner surface of the cover 45.
．． When 39 is engaged, removal is prevented.

Then, the inner surface of the cover 45, the outer surface of the block portion 41 of the fixed contact piece block 30, and the collar portion 18 of the spool 17.
One side of the cover 45 comes into contact with the inside of the cover 45, and the inside of the cover 45 is held loose.

Further, the external terminal portions 24.32.35 of the movable contact piece 23, fixed contact piece 31, and coil terminal 34 form a dual in-line type terminal arrangement, as shown in FIG. The interval of 32.35 is an integral multiple of the IC pitch of 2,541n71L.

That is, the distance l between the external terminal portions 35 and 35 of the coil terminal 34 is 2.54X2rnrIL, the distance m between the external terminal portion 32 of the fixed contact piece 31 and the external terminal portion 35 of the coil terminal 34 is 2.54X3 mm, and the distance between the movable contact piece 23 external terminal section 2
4 and the external terminal portion 32 of the fixed contact piece 31 is 2.
It is 54X5mm.

Since the external terminal portions 24, 32, and 35 are arranged as described above, the device can be directly attached to, for example, a printed circuit board or socket in which holes are provided at an IC pitch, resulting in extremely good installation workability.

The operation of the polarized electromagnetic relay assembled as described above will be explained.

First, in a normal state (when the coil groove 19 is demagnetized), the armature A is biased clockwise in FIG.
are in contact with each other, and the movable contact surface 23 and the fixed contact 33 are separated from each other.

Now, when a current is applied to the coil 19 in a direction that cancels out the magnetic flux of the permanent magnets 8 and 9, the lower iron piece 6°6 repels the iron core 15, and the upper iron piece 2 is attracted, and the armature A becomes as shown in FIG. Rotates in the direction of medium pressure.

As a result, the card unit 10 of the amateur A pushes down the movable contact piece 23.23, and the movable contact piece 23.23 and the fixed contact 33.33 come into contact to close the contact.

Then, when the coil 19 is de-energized, the armature A rotates clockwise in FIG. 3 due to the restoring force of the movable contact piece 23 itself and the magnetic flux of the permanent magnet 8.
, 6 come into contact with the iron core 15, and the contacts open.

The outer surface of the armature A is coated with synthetic resin, and in particular, since the synthetic resin wall is interposed between the movable contact piece 23.23 and the iron pieces 6, 6, there is no insulation even if the distance between them is reduced Its properties are fully guaranteed and it is possible to make it thinner.

Further, since each contact piece 23° 31 and the coil terminal 34 are constructed of a single plate that is continuous with the external terminal portion, connection work using lead wires or the like is not required, and each contact piece 23.
31 and the coil terminal 34 are formed into blocks by insert formation, and these are assembled by stacking them.
Easy to assemble and position.

FIG. 6 shows another embodiment of the present invention, in which external terminal portions 51.53 of a fixed contact piece 50, a movable contact piece 52, and a coil terminal (not shown) project from a block 54.55 on both sides. , and is bent downward to form a so-called DIP type, and a cover 56 is placed over the external terminal portion 51.
53 are also arranged at an IC pitch.

The operation is the same as that of the above embodiment, and the armature, iron core, spool, etc. constituting the electromagnet section are also exactly the same as those of the above embodiment, so the same reference numerals will be given and explanations will be omitted.

In the above embodiment, only the iron piece on the lower surface of the armature A is divided into two L-shaped iron pieces 6, 6), and the permanent magnets 8, 9 are passed over this divided part, and when the current to the coil 19 is stopped, We have explained the so-called single stipple type polarized electromagnetic relay that returns to normal state, but if the iron piece 2 on the top surface of the armature A is also divided into two parts and a permanent magnet is passed over this divided part, the current to the coil 19 can be stopped. It is also possible to use a so-called latching type polarized electromagnetic relay that maintains the operating state and returns only by passing a current in the opposite direction through the coil 19.

Furthermore, the card section 10 of the amateur A is not limited to being provided only on the bottom surface, but may be provided on the top surface, and accordingly, a contact mechanism section may be provided above the amateur A.

As is clear from the above description, according to the present invention, an armature in which iron pieces are joined at a predetermined angle is supported so as to be swingable in the thickness direction of the iron core, and a part of the armature opens and closes the contact. As a result, the overall structure can be made thin, and there is no need to provide a card or the like made of a separate member, and the structure is simplified.

In addition, the armature's permanent magnet also serves as a return spring, and a repulsive force acts when the coil is excited (so it is possible to obtain a large operating force with a small size and low power consumption.

Moreover, since the card part is provided at the farthest position from the armature's hinge point, the stroke of the card part is large and the contact spacing can be set large.

Therefore, the present polarized electromagnetic relay can be used for large-capacity switching or DC switching, and the contact spacing can be easily adjusted during assembly.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a polarized electromagnetic relay according to the present invention;
Figure 2 is a partial cross-sectional plan view of the assembled state, and Figure 3 is a partial cross-sectional plan view of the assembled state.
4 is a sectional view taken along the line IV--IV in FIG. 2, FIG. 5 is a right side view, and FIG. 6 is a longitudinal sectional view of another embodiment. DESCRIPTION OF SYMBOLS 1... First insulator, 2... Iron piece, 5... Second insulator, 6... Iron piece, 8, 9... Permanent magnet, 10...
Card section, A...Amateur, 15...Iron core, 17
...Spool, 19...Coil, 22.55...
Movable contact piece block, 23.52... Movable contact piece, 2
4.53...External terminal part, 30.54...Fixed contact piece block, 31°50...Fixed contact piece, 32.51
...External terminal section, 34...Coil terminal, 35...
External terminal section, 37.41...Block section, 45.56
···cover.

Claims (1)

[Claims] 1. A U-shaped iron core with a coil wound around the center thereof, and two iron cores that are VC-coupled at a predetermined angle to each other, and the joint ends can swing freely to both ends of the iron core. At the same time, at least one of the two iron pieces is composed of two iron pieces that maintain a predetermined interval, one of which is in contact with the N pole, and the other with the K pole.
An armature made of an insulator with a card section provided at the end opposite to the coupling end while passing a permanent magnet across 5 so that the S poles are in contact with each other, and movement of the card section of the armature based on the excitation of the coil. 1. A polarized electromagnetic relay comprising: a movable contact piece that is displaced by a movable contact piece; and a fixed contact piece that comes into contact with and separates from the movable contact piece. 2. The polarized electromagnetic relay according to claim 1, wherein the outer surface of the armature is coated with an insulator made of synthetic resin. 3. The polarized electromagnetic relay according to claim 1 or 2, wherein the movable contact piece, the fixed contact piece, and the coil terminal are each constructed of a single plate continuous with the external terminal portion. 4. Any one of claims 1 to 3, characterized in that the movable contact piece, the fixed contact piece, and the coil terminal are each inserted into an insulating stand and formed into a block, so that each insulating stand can be stacked. A polarized electromagnetic relay described in .