JPH11329860A - Block core - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve productivity and to reduce the cost by forming an E core and an I core through caulking an I-shaped steel sheet and blocking it, providing engaging means connectible to the E and I cores, and integrating the both via the means. SOLUTION: One E-shaped steel sheet 1a and one I-shaped steel sheet 2a are integrated via caulked parts 3 and blocked. Then, the blocked two I-shaped cores 2 are disposed on the end faces of both legs 4 of the blocked core 1. Inside faces of two members A, A' are jointed or the like. Engaging parts 7 of the cores 2 are pushed into engaging parts 5a of substantially circular protrusions of a central leg 6 of the core 1, engaging parts 6 of recesses of a side of the core 2 are engaged with protrusions 4a of upper sides of both the legs 4 of the core 1, and respectively fitted in to be engaged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a block core used for a transformer incorporated in consumer electric equipment.

[0002]

2. Description of the Related Art Transformers, reactors and the like are generally constructed by incorporating a core into a coil bobbin around which a coil is wound.

Conventionally, this type of core is, as shown in FIG. 8, an E-shaped core 1A formed by laminating sheet-like silicon steel sheets.
In addition, the laminated I-shaped core 2A is also fitted to the end face of the E-shaped core 1A. Although not particularly shown, a coil bobbin having a coil is mounted on, for example, a central leg of the E-shaped core 1A, and is used as a transformer or the like.

[0004]

However, the E-shaped core 1
When the A and the I-shaped core 2A are integrated, since the side surface of the joint is welded a, a welding process is required, and the assembling work is complicated, and welding equipment is also required.
There was a problem that there was a problem in cost.

The present invention has been proposed in view of the above, and an object of the present invention is to provide a block core which can eliminate welding work, welding equipment, etc., improve productivity and reduce costs. Is to do.

[0006]

SUMMARY OF THE INVENTION The present invention forms a block-shaped E-type core 1 and I-type core 2 by caulking and integrating sheet-shaped E-type and I-type steel plates 1a and 2a, respectively. The EI type cores 1 and 2 are provided with engaging means that can be engaged with each other, and the two objects are integrated via the engaging means to achieve the above object. In this case, the engaging means includes a concave portion and a convex portion, and the convex portion is pushed into the concave portion to be engaged. That is, an engaging portion composed of convex portions 4a, 5a is formed at both leg portions 4 of the E-shaped core 1 and the distal end portions of the center leg 5, and the convex portions are formed at corresponding positions of the I-shaped core 2 to be joined thereto. An engaging portion composed of a concave portion into which 4a and 5a can be fitted is formed to achieve the above object.

[0007]

FIG. 1 is a perspective view of an embodiment of the present invention. In the drawing, reference numeral 1 denotes an E-type core in which a large number of sheet-shaped steel sheets are integrated in a laminated state, and reference numeral 2 denotes an I-type core which is also blocked.

[0008] A caulking portion 3 protruding from one side to the other side for forming a block core is formed substantially at the center of the center leg 5 of the one E-shaped steel plate 1a serving as the base material. ing.

The I-shaped core 2 comprises two members A and A 'each having the same shape, and a caulking portion 3 is also formed substantially at the center in the longitudinal direction.

FIG. 2 shows a staking state. The staking part 3 forms a concave portion when viewed from one side, and forms a convex portion when viewed from the other side. Therefore, if a large number of sheet-shaped steel plates are fitted in the concave portions while the caulking portion 3 is being positioned, the respective sheet-shaped steel plates can be integrally laminated and formed into a block.

Referring again to FIG. 1, an engaging convex portion 4a is formed on the side of the protruding distal end portion of both legs 4 of one E-shaped steel plate 1a.
Are formed, and the inside thereof is a flat portion 4b.
The tip of the projection 4a is slightly swelled.

A projection 5a for engagement is also formed at the center of the tip of the center leg 5. The projection 5a is rounded and its tip is slightly bulged. This is because the I-shaped core 2 is engaged with an engagement portion formed of a concave portion to be described later.

Thus, the convex portion 4a and the flat portion 4
b and the convex portion 5a of the center leg 5 constitute an engaging portion for the blocked I-shaped core 2.

A recessed engaging portion 6 is formed below the outer end of one I-shaped steel plate 2a. The recessed engaging portion 6 is formed with a notch which can be engaged with the projections 4a formed on both legs 4 of the E-shaped steel plate 1a. Have been.

[0015] Similarly, a concave engaging portion 7 formed of a substantially semicircular notch is formed below the inner end of the I-shaped steel plate 2a. The shape of the engaging portion 7 is such that the I-shaped steel plate 2a is
The E-shaped steel plate 1a side and the corresponding rounded and substantially circular engaging projections 5 on the E-shaped steel plate 1a side.
a.

An engaging portion 8 formed of a notch is formed on each side of the bottom of both legs 4 of one E-shaped steel plate 1a. At the center of the bottom of the center leg 5, an engagement portion 9 formed of a substantially circular notch is formed.

Each engaging portion 8 on the side of the bottom of both legs 4
Is formed in such a shape that it can be engaged with the substantially circular engaging portion 9 at the center of the upper portion and the substantially circular engaging portion 7 at the center of the upper portion. These engaging portions are formed at portions that do not obstruct the magnetic path of the transformer.

Next, the procedure for assembling the core will be described.

First, one E-type steel sheet 1a and one I-type steel sheet 2a
As shown in FIG. 2, each is integrated via a caulking portion 3 to form a block. FIG. 1 is a perspective view in which the components E and I are respectively blocked.

Next, as shown in FIG. 3, the two blocked I-type cores 2 are located on the end faces of each leg 4 of the blocked E-shaped core 1.

Then, as shown in FIG. 4, the respective inner surfaces of the two members A and A 'are joined to each other so that
As shown by arrows in FIGS. 4 and 5,
An engaging portion 6 composed of a concave portion on the side of the I-shaped core 2 is provided on the convex portion 4a on the upper side of both legs 4 of the E-shaped core 1, and the E-shaped core 1
Of the I-shaped core 2 into the engaging portion 7a of the I-shaped core 2 into the engaging portion 5a of the I-shaped core 2,
If they are engaged so as to be fitted into each other, the two can be easily integrated to form the block core B.

A desired electronic component such as a transformer or a reactor may not be formed, for example, by incorporating a coil (not shown) in, for example, the center leg 5 of the E-shaped core 1 that has been blocked before. Of course.

FIG. 6 shows another example of use of the present invention in which a plurality of block-shaped E-type cores 1 are connected in multiple stages.

That is, another blocked E-type core 1 is positioned above the block-shaped E-type core 1 located on the lower side in the state shown in the figure, and the substantially circular shape of the lower E-type core 1 is formed. Of the upper E-shaped core 1 into the notches formed on both sides of the upper E-shaped core 1 and the engaging portion 9 formed at the center of the bottom of the upper E-shaped core 1. The mold core 1 can be integrated in multiple stages to form a block.

If necessary, the blocked I-type core 2 may be integrated with the uppermost E-type core 1 as described above.

FIG. 7 shows still another embodiment of the present invention. This example shows an example in which the blocked I-type core 2 is accommodated in a space between the center leg and both legs of the blocked E-type core 1, that is, a so-called window, to form a single core body. . According to the present invention, the E-shaped core 1 and I
Since the dimensions of the mold core 2 are formed, each block can be used in combination.

[0027]

As described above, according to the present invention, since the individual sheet-shaped steel sheets are caulked and made into blocks, the I-shaped core 2 and the E-shaped core 1 which are easily blocked can be constituted. In addition, the I-type, E-type counterpart or E-type companion can be easily integrated by engaging means such as fitting and engaging a convex portion with a concave portion formed in each of them. Is unnecessary, and the assembly workability is remarkably improved, so that it is suitable for mass production and cost reduction can be achieved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of one embodiment of the present invention.

FIG. 2 is an explanatory view showing a state in which each sheet core is integrated by caulking.

FIG. 3 is an explanatory view showing one assembly process of the block core of the present invention.

FIG. 4 is an explanatory view showing an assembling process.

FIG. 5 is an explanatory view showing a state in which the EI type core body is integrated.

FIG. 6 is an explanatory diagram of another use example of the present invention.

FIG. 7 shows still another embodiment of the present invention.

FIG. 8 shows an explanatory diagram of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 E-type core 1a E-type steel plate 2 I-type core 2a I-type steel plate 3 Caulking part 4 Both legs 4a Convex part 5 Central leg 5a Convex part 6,7,8,9 Engagement part A, A 'Two members B block core

Claims (3)

[Claims] 1. An E-type core 1 and an I-type core 2 which are formed into a block by integrally caulking sheet-shaped E-type and I-type steel plates 1a and 2a via a caulking portion 3, respectively. A block core characterized in that the EI type cores 1 and 2 are provided with engaging means engageable with each other, and are integrated through the engaging means. 2. The block core according to claim 1, wherein said engaging means comprises a concave portion and a convex portion, and said convex portion is engaged by being pushed into said concave portion. 3. An engaging portion comprising projections 4a, 5a is formed at both leg portions 4 of the E-shaped core 1 and at the distal end portions of the center leg 5,
At the corresponding position of the I-shaped core 2 to be joined therewith, the protrusion 4
2. The block core according to claim 1, wherein an engaging portion formed of a concave portion into which a and 5a can be fitted is formed.