JPS5922689Y2 - polarized electromagnetic relay - Google Patents

Description

[Detailed description of the invention] The present invention relates to a polarized electromagnetic relay, and its purpose is to have a thin overall design with low power consumption, the ability to set a large contact interval, and a smooth armature swing. Our objective is to provide polar electromagnetic relays.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the accompanying drawings, which are exemplary embodiments.

In Figures 1 to 6, 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, which are obtained by dividing the U-shaped piece into two. Permanent magnets 8 and 9, which are made of an insulator and are magnetized with two poles on one side, are attached to the upper and lower surfaces of the above-mentioned cross-shaped iron piece 6.degree. 6, respectively.

Card parts 10, 10 are integrally provided on the lower surface of the second insulator 5, and a projecting piece 7 that stands up upward is integrally provided at one tip.

Further, cylindrical projections 3, 3 are protruded from the lower surface of the first insulator 1, and a circular hole 11 formed in the second insulator 5 is provided with the projections.
．． 11 and ultrasonic welding or heat caulking, the wire edge bodies 1 and 5 are integrated to form the armature A.

Then, in the integrated state as described above, the iron piece 2. 6. The magnetic pole faces 2a, 5a, 5a of No. 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 fitted between the wire edges 1.5 of the armature A, and their tips 16a, 16
a slightly protrudes from the ends 12a, 12b of the armature A, and the upper and lower surfaces of both ends 16.16 of the iron core 15 are the inner magnetic pole surfaces 2a, 5a of the iron piece 2.6.6 of the armature A.

Opposed to 6a.

One end 12a of the armature A has an edge shape, and the other end 12b has a curved surface (see FIG. 5).

At 12 b, armature A is attached to both ends 16.16 of iron core 15.
It is supported on the upper and lower surfaces of the body so as to be able to swing at a predetermined angle.

In addition, a display section 15a is provided on the end face of the iron core 15, and this display section 15a is connected to the second insulator 5 of the armature A.
It is made to be visible and hidden by the protruding piece 7.

Reference numeral 22 denotes a movable contact piece 2 having spring properties and bent into a cylindrical shape.
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.

In addition, a claw part 27 is provided on the upper part, and a cylindrical protrusion 28 is provided on the lower surface.
28 are integrally molded.

Reference numeral 30 denotes a fixed contact piece block which is insert-molded so as to span 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 parts 32 and 35 protrude from the block part 37, and a circular hole 38 and a claw part 3 are formed in the block part 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.
, 34 protrude, and a notch 43 is provided at a position corresponding to the display portion 15a of the iron core 15, and the collar portions 18, 18 of the spool 17 are provided on the inner surface.
A positioning step portion 42 that engages with 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 thermally welding it, the movable contact piece block 22 and the fixed contact piece block 30 are integrated and fixed. Fixed contacts 33.33 provided on the upper surfaces of the contact pieces 31, 31 and the tips of the movable contact pieces 23.23 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 drawer part of the coil 19 is connected to the end part 36 of the coil terminal 34, and the card part 1 of the amateur A
0 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 end is covered from the block part 41 side of the movable and fixed contact piece block 22.30, and the stepped part 25.4 of the block 22.30
The claw portion 27 of the block 22.30 is positioned in the recess 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.
The inside of the cover 45 is held without wobbling due to contact with one side of the cover 45.

The fixed contact piece block 3 is provided on the back side of the cover 45.
A transparent display window 48 is formed at a position corresponding to the notch 43 of the block portion 41 of 0, and the portion other than the display window 48 is made opaque by appropriate texturing.

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

First, in a normal state (when the coil 19 is demagnetized), the armature A is biased in the circular direction in FIG. 3 by the magnetic flux of the permanent magnets 8 and 9,
are in contact with each other, and the movable contact piece 23 and the fixed contact 33 are separated from each other.

The display section 15a of the iron core 15 is shielded by the protruding piece 7 of the armature A, and the display section 15a does not appear in the display window 48 of the cover 45.

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

As a result, the card unit 10 of amateur A pushes down the movable contact piece 23.23, and the movable contact pieces 23, 23 and the fixed contact 33.33 come into contact with each other, thereby closing the contact.

The display portion 15 a of the iron core 15 is exposed to the outside as the protruding piece 7 of the armature A moves downward, and appears in the display window 48 of the cover 45 .

This allows confirmation that the present polarized electromagnetic relay has operated.

Next, when the power supply to the coil 19 is stopped, the armature A rotates in the circular direction in FIG.
, 6 come into contact with the iron core 15, and the contacts open.

The display section 15a of the iron core 15 is then shielded again by the protrusion 7 of the armature A, and the display section 15 disappears from the display window 48 of the cover 45.

The outer surface of the armature A is coated with synthetic resin, and in particular, the synthetic resin wall is interposed between the contact pieces 23, 23 and the iron pieces 6, 6, so that even if the distance between them is reduced, insulation is maintained. is sufficiently guaranteed, making it possible to reduce the thickness.

Further, since each contact piece 23.31 and the coil terminal 34 are constructed of a single plate that connects to 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 molding, and these are assembled by stacking them.
Easy to assemble and position.

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 of the armature A is also divided into two parts and a permanent magnet is placed across 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.

Furthermore, as the display part 15a, in addition to applying new coloring to the iron core 15, a part of the rust-preventing plating of the iron core 15 may be used, or a spool 17 integrally formed with the iron core 15 may be used.
It may be an extension of a part of the .

As is clear from the above explanation, according to the present invention, a resin-molded armature is supported so that the iron piece forms a predetermined angle so that it can swing freely 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 thinner, and there is no need to provide a card or the like made of a separate member, and the structure can be simplified.

In addition, the hinge part (joint end) of the armature is molded from synthetic resin, and since this hinge part comes into contact with the flat upper and lower surfaces of the core, the accuracy between the hinge part and the upper and lower surfaces of the core can be easily obtained. The oscillation is extremely smooth and there is little wear.

Furthermore, since the permanent magnet of the armature also serves as a return spring and a repulsive force acts when the coil is excited, a large operating force can be obtained 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.
Figure 4 is a cross-sectional view taken along line III-III in the figure, and Figure 4 is I■-- in Figure 2.
5 is a partially enlarged view of FIG. 3, and FIG. 6 is a left side view. 1...First insulator, 2...Iron piece, 5.
...Second insulator, 6...Iron piece, 8,9.
...Permanent magnet, 10 ... Card section, 12
a, 12b... end (joining end), A...
・Amateur, 15... Iron core, 16...
・End part, 17...Spool, 19...
Coil, 22.55...Movable contact piece block,
23.52...Movable contact piece, 24.53...
...External terminal section, 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 part, 45.56...Cover

Claims (1)

[Scope of utility model registration request] A U-shaped iron core with a coil wound around the center and two pieces of iron are connected to each other at a predetermined angle via synthetic resin.
This joint end is swingably supported on the upper and lower surfaces of both ends of the iron core, and at least one of the two iron pieces is connected to an iron piece that abuts one arm of the U-shaped iron core, and this iron piece. It consists of an iron piece that abuts the other arm at a predetermined interval, and a permanent magnet is passed over the iron piece so that the N pole abuts on one side and the S pole abuts on the other, while the other side is opposite to the connecting end. an armature having a card part molded in resin integrally with the coupling end at the end thereof, a movable contact piece that is displaced by movement of the card part of the armature based on the excitation of the coil, and a fixed contact piece that comes into contact with and separates from the movable contact piece. A polarized electromagnetic relay characterized by comprising: