JPH02119025A - Polar electromagnetic equipment - Google Patents

Abstract

PURPOSE:To permit assembling yokes, iron cores, etc., to a moulded spool so as to facilitate manufacturing the equipment in the title as well as attempting improvement in its yield, by providing flange barrel portions formed with engaging holes respectively to both ends of the spool. CONSTITUTION:A polar electromagnetic equipment wherein the magnetic field of a permanent magnet in a movable block 30 which integrally moves movable contact segments is controlled by a first iron core 27, a first yoke 26, a second iron core 28, a second yoke 29, etc., has both sides of a moulded spool 23 provided respectively with flange portions 21b, 22a, first and second barrel portions 21, 22 which have engaging holes 21c, 22c provided respectively to the flange portions, and coils 24 wound round the outer sides of the barrel portions 21, 22. Accordingly, the first yoke, the first iron core, the second iron core and the second yoke can be sequentially post-assembled to the spool round which the coils are wound without applying insert moulding, etc., to the spool, with capability of doing assembly work without requiring high dimensional accuracy in the component parts of the equipment so that the polar electromagnetic equipment is formed with improved yield in its manufacturing.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a polarized electromagnet device equipped with a permanent magnet.

(Issue 7M to be solved by the prior art and the invention) Conventionally, as a polarized electromagnet device equipped with a permanent magnet, for example,
As shown in the figure and FIG. 6, the first iron core 1 has a rod shape made of a magnetic material, and has one end 1a fixed by caulking to an upright piece 3a of a yoke 3 having a substantially U-shaped cross section, and a flat surface. The first iron core has a Y-shape! By caulking and fixing one end 2C to the upright piece 3b of the yoke 3, the pair of opposing abutting parts 2a and 2b provided at the other end are aligned with the first The second iron core 2 facing the magnetic pole portions 1b of the iron core I, and the first iron core! and a coil 4 continuously wound around the second iron core 2, and a pair of movable iron pieces 6a, 6b holding a permanent magnet 5 between them, and the movable iron pieces 6a, 6b are connected to the first iron core 2. Some types include a movable block 7 that is positioned between the magnetic pole part 1b of the core 1 and the contact parts 2a, 2b of the second iron core 2 so as to be able to approach and separate them alternately.

In this device, by energizing and demagnetizing the coil 4, the movable block 7 is reciprocated in the directions of arrows m and n via a pair of movable iron pieces 6a and 6b.

However, according to the conventional polarized electromagnet device, in order to improve electrical insulation, the first body part 8a and the second body part 8b, which have flanges at both ends, are integrally formed at the connecting part 8C. When trying to wind the coil 4 around the spool 9 shown by the two-dot chain line, the first iron core 11, the second iron core 2, and the yoke 3 cannot be attached to the spool 9 afterwards. The core 2 and yoke 3 had to be assembled by insert molding. For this reason,
Component parts require high dimensional accuracy, resulting in poor yields.
There was a problem in that it led to an increase in costs.

In view of the above problems, the present invention does not involve insert molding, but
It is an object of the present invention to provide a polarized electromagnet device that can be assembled by retrofitting other components to a spool.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a first through hole of a first body having flanges at both ends, and a second through hole having flanges at both ends.
A spool in which the second through hole of the body is arranged on the same axis and the lower edges of the opposing flanges are integrated at the connecting part, and the spool is continuous with the first body and the second body of the spool. The coil is wound around the coil, and the side surface is approximately U-shaped.
A first yoke that is fitted into a fitting hole of a connecting portion provided near the opening of the through hole to protrude, and is assembled with a rear upstanding piece along the outer flange of the first body; a first iron core that is inserted into a first through hole through an insertion hole provided in a rear upright piece of the first yoke, has a protruding tip part serving as a magnetic pole part, and a protruding rear end part fixed to the rear upright piece of the yoke; a second iron core that is inserted into the second through hole of the second body part and has a protruding tip fixed to the front upright piece of the first yoke; By fixing the protruding rear end portion of the second iron core to the second yoke, both ends of which are opposed to each other with the magnetic pole portion of the first iron core in between, and a pair of movable iron pieces holding a permanent magnet. and a movable block in which the pair of movable iron pieces are supported so as to be reciprocally movable so as to face the magnetic pole part of the first iron core and both ends of the second yoke so as to be able to approach and separate them alternately. It is.

(Function) Therefore, according to the present invention, the molded spool has the first
The yoke, the first iron core, the second iron core, and the second yoke are assembled in sequence.

(Embodiment) Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings of FIGS. 1 to 4.

The first embodiment is applied to an electromagnetic coupling M''f3, as shown in FIGS. 1 to 3, and roughly consists of a box-shaped base IO, an electromagnet part 20, and a movable block 30. be.

The box-shaped base lO has a pair of partition walls It arranged in parallel inside it.
, 12, a pair of R4 portions 14, 15 are formed with the recess 13 in between. The recess 13 can accommodate and fix an electromagnet 20, which will be described later, while the groove 14.1
A shield layer 5 is formed on the inner surface by metal plating, and ground terminals 19 are electrically connected to the shield layer. Note that the shield layer may be formed by fitting a shield box into the groove 14.15. moreover,
Contact terminals 16a, 16b and 17a, 17 electrically insulated from the shield layer are provided in the grooves 14 and 15.
b stands out. Note that the groove portions 14 and 15
The contact terminals 16a, 16b and 17 are provided on the inner surface of the
Protrusions 10a are provided at opposing positions with a and 17b in between. Further, a pair of protrusions 11a and 12a are provided at the center of the upper end surface of the -pair of partition walls 11.12, respectively.
Guide groove 11b that guides the movable block 20 described later
, 12b are formed.

The electromagnet section 20 includes a spool 23, a coil 24, a first yoke 26, a first iron core 27, a second iron core 28, and a second yoke 29.

The spool 23 has a first through hole 21c of the first body 21 having flanges 21a and 21b at both ends, and a flanges 22a at both ends.
, 22b are disposed on the same axis as the second through hole 22c of the second body portion 22, and the lower edges of the opposing flanges 21a and 22b are integrated by a connecting portion 23a. and,
Coil terminals 25 and 25 are insert-molded on both sides of the collar portion 21b, and a fitting hole 23 located near the opening of the first through hole 22c is formed in the connecting portion 23a.
b is provided.

After the coil 24 is wound around the first body part 21, the coil 24 is wound around the second body part 2.
2 continuously wound in the opposite direction to the first body 21,
Both ends are coil terminals 25.25 provided on the flange 21b.
are connected and soldered to each other.

The first yoke 26 has a substantially U-shaped front face, and one upright piece 26a fits into the fitting hole 23b of the connecting portion 23a and projects, and the other upright piece 26c is attached to the outer surface of the flange 21b. It is assembled side by side.

The first iron core 27 is a rod-shaped magnetic body, and is inserted into the through hole 21c of the first body part 21 through the insertion hole 26d provided in the upright piece 26c of the first yoke 26, and its protruding tip is attached to the magnetic pole part 27.
a, and the protruding rear end portion 27b is fixed to the insertion hole 26d by caulking.

Note that magnetic shielding plates 27c are provided on both sides of the protruding magnetic pole portion 27a.
may be provided. According to this embodiment, the magnetic shielding plate 27
It has the advantage of being easy to assemble since it can be retrofitted.

Like the first iron core 27, the second iron core 28 is a rod-shaped magnetic material,
It is inserted into the through hole 22c of the second body portion 22, and the protruding tip portion 28b is fixed by caulking to a notch groove 26b provided in the upright piece 26a of the first yoke 26.

The second yoke 29 has a substantially U-shaped plan view, and the rear end 2 of the second iron core 28 projects into a through hole 29a provided in the center.
8a is fixed by caulking, and both ends 29b and 29c thereof face each other with the magnetic pole part 27a of the first iron core 27 in between.

The electromagnet section 20 having the above configuration is located in the recess 1 of the base 0.
3, the coil terminal 25°25 is positioned within the base 1
It is fixed and protrudes from the bottom surface of 0.

The movable block 30 has a frame 31 in which a pair of movable iron pieces 33, 34 holding a permanent magnet 32 are press-fitted, and arm parts 31a, 31b extending from both sides of the frame 31 have movable contact pieces 35, 34. 96 are each insert molded. Then, the pair of movable iron pieces 33 and 34 are connected to the first iron core 2.
7 magnetic pole part 27a and both ends 29b of the second yoke 29
, 29c so as to be able to approach and separate from each other, and the arm portion 3
By positioning 1a and 31b to the guides N11b and 12b, respectively, the movable block 30 moves in the direction indicated by the arrow m in FIG.

The movable contact pieces 35 and 36 are contact terminals 16a, +6b and 17a, which are supported to be reciprocated in the n direction.

17b, respectively.

Next, the operation of the electromagnetic relay configured as described above will be explained.

Now, in the non-excited state, as shown in FIG.
The movable contact piece 35 is in contact with the contact terminals 16a and 16b, while the movable contact piece 35 is in contact with the contact terminals 16a and 16b. , the movable contact piece 36 is a contact terminal! ? a,
It is separated from 17b.

Next, when the coil 24 is excited in a direction that cancels out the magnetic flux of the permanent magnet 32, the movable iron pieces 33 and 34 move toward the first iron core 27.
The magnetic pole part 27a and the one end part 29c of the second yoke 29 repel each other, while the one end part 29b of the second yoke 29
and the magnetic pole part 27a of the first iron core 27, the movable block 30 moves in the direction of the arrow n in FIG.
b and the magnetic pole part 27a of the first iron core 27 (Fig. 3), and the movable contact piece 35 is attached to the contact terminal +6.
After separating from a and 16b, the movable contact piece 36 contacts the contact terminals 17a and 17b.

Even if the excitation is removed, the state is maintained by the magnetic force of the permanent magnet 32.

Next, when the coil 24 is excited in the opposite direction to that described above, the movable block 30 returns in the direction of arrow m, and the movable contact piece 35.
36 return to their original positions. Note that the movable contact pieces 35 and 36 are connected to the contact terminals 16a, 16b and 17a.
, 17b, when the grooves 14., 17b are not in contact with each other.
It contacts the protrusion 10a of the shield layer provided on the inner surface of the shield layer 15, and is magnetically shielded.

Although the first embodiment described above is applied to a self-holding type electromagnetic relay, the application is not limited to this, and for example, as shown in FIG. Of course, instead of leaving only one end 29c of 29 and cutting off the other end (second embodiment), it is better to destroy the magnetic balance and make it self-returning.

The rest is the same as the previous embodiment, so the explanation will be omitted.

(Effects of the Invention) As is clear from the above description, according to the polarized electromagnet device according to the present invention, the spool around which the coil is wound has a first yoke, a first iron core, a second iron core, and a second yoke. can be retrofitted sequentially, so it can be assembled without insert molding. For this reason, high dimensional accuracy is not required for the component parts, making manufacturing easier and improving yield.

[Brief explanation of the drawing]

1 to 3 show a first embodiment of a polarized electromagnet device according to the present invention, in which FIG. 1 is an exploded perspective view, FIG. 2 is a plan view, FIG. 3 is a magnetic circuit diagram, and FIG. is the second according to the present invention.
A magnetic circuit diagram showing an embodiment, and FIGS. 5 and 6 are an exploded perspective view and a plan view of a conventional polarized electromagnet device. 20... Electromagnet part, 23... Spool, 24...
Coil, 26...first yoke, 27...first iron core,
28...Second iron core, 29...Second yoke, 30...
・Movable block, 32...Permanent magnet, 33.34...
・Movable iron piece. Figure 3

Claims (1)

[Claims] (1) The first through-hole of the first body having flanges at both ends and the second through-hole of the second body having flanges at both ends are arranged on the same axis, and the opposing flanges A spool whose lower edge is integrated at a connecting part, a coil continuously wound around the first body part and the second body part of this spool, and a side surface having a substantially U-shape, with a front upstanding piece. A first yoke that is fitted into and protrudes from a fitting hole of a connecting portion provided near the opening of the second through hole, and that is assembled with the rear upstanding piece along the outer flange of the first body. , the first yoke is inserted into the first through hole through the insertion hole provided in the rear upright piece of the first yoke, the protruding tip part is a magnetic pole part, and the protruding rear end part is fixed to the rear upright piece of the yoke. 1
an iron core; a second iron core that is inserted into a second through hole of the second body and whose protruding tip is fixed to the front upright piece of the first yoke; a second yoke whose both ends face each other with the magnetic pole part of the first iron core in between, and a pair of movable iron pieces holding a permanent magnet between them. a movable block in which the pair of movable iron pieces are supported so as to be reciprocally movable so as to face the magnetic pole portion of the first iron core and both ends of the second yoke such that they can alternately approach and separate from each other; Features a polarized electromagnet device.