JPH0227542Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to electromagnetic equipment such as transformers, and involves welding a mounting plate for attaching the main body of the equipment to an object to be attached to the laminated surface of a laminated iron core. Concerning the structure of

[Conventional technology]

As shown in FIG. 4, conventional electromagnetic equipment has a laminated core body 3 consisting of a laminated body of an E-type laminated core 1 and an I-type laminated core 2, in which a plurality of coils 4, path cores 5, etc. are fitted. Both laminated cores 1 and 2 of the laminated core body 3
A flat mounting plate 6 is welded to one of the laminated surfaces including the joint edge. The attachment plate 6 is joined by welding along the lamination direction of the laminated core body 3 at both edge portions 6a corresponding to the direction perpendicular to the lamination direction of the laminated core body 3.

[Problem that the invention attempts to solve]

In recent years, microwave ovens, for example, are becoming more versatile as electrical equipment that uses the above-mentioned electromagnetic equipment, and for example, gas-operated types have become popular. However, when using electromagnetic equipment as described above, it is directly attached to the chassis with a mounting plate, so the electromagnetic equipment must be installed by bending the gas pipe etc., which makes the microwave oven essential for oscillating the magnetron The department became overcrowded and there were problems in terms of safety and serviceability.

Therefore, it is conceivable to leave the electromagnetic device as it is, provide legs on the mounting plate, mount the electromagnetic device floating on the chassis, and pass the gas pipe between the legs of the mounting plate. When provided at both edges of the corresponding mounting plate (section 6a in Fig. 4) in the direction perpendicular to the lamination direction of the body, the legs should also be attached since these edges are the welding points to the laminated core body. As a result, the strength was reduced and it was difficult to weld the legs. Furthermore, if the legs are provided on both edges of the mounting plate corresponding to the lamination direction of the laminated core body (one both edges 6a of the mounting plate 6 in FIG. 4 and the other both edges), the laminated core Since the mounting plate protrudes from the fixed position of the body and is supported in reverse, it is easy to cause vibrations, hum, etc. of electromagnetic equipment. The problem arises that the space between the two becomes narrower, making it difficult to arrange the gas pipes.

This idea was created with these points in mind.
Even if the mounting plate has legs, it can be easily and reliably welded to the laminated core body without compromising the strength of the legs, and furthermore, the electromagnetic equipment can be welded to the laminated core body to shorten the welding process time for this connection. The purpose is to provide

[Means for solving problems]

In the present invention, a primary coil 1 as a coil is mounted on a laminated iron core body 12 formed by laminating iron core plates 13 and 15.
7 and a secondary coil 18 to form a closed magnetic circuit, and a mounting plate 21 is provided on the laminated surface of the laminated iron core body 12 by welding.
A leg portion 24 is provided on each of the corresponding edges 21a of the laminated core body 12 in a direction perpendicular to the lamination direction, and at least four joining holes are provided corresponding to the four corners of the laminated surface of the laminated core body 12. It is an electromagnetic device equipped with 22.

[Effect]

The present invention involves welding a mounting plate, which has legs on both corresponding edges in a direction perpendicular to the lamination direction of the laminated core, to the laminated surface of the laminated core through a joint hole provided in the mounting plate. , the mounting plate is fixed.

〔Example〕

Next, the configuration of an embodiment of the present invention will be described with reference to the drawings.

1 and 2, 11 is a device main body, and this device main body 11 has a laminated iron core 12,
This laminated core body 12 is composed of a laminated body of an E-type laminated core 14 in which E-type core plates 13 are laminated, and an I-type laminated core 16 in which I-type core plates 15 are laminated.
After fitting the primary coil 17, secondary coil 18, and path core 19 into this E-type laminated core 14,
The I-type laminated cores 16 are welded together to form each coil 17,
18 etc. and the laminated iron core body 12 constitute a closed magnetic circuit.

In addition, both laminated cores 14 and 16 of the laminated core body 12
The device body 11 is on one laminated surface including the joint edge of the
A mounting plate 21 is joined to the mounting plate 21 for mounting the mounting plate to an object to be mounted, such as a chassis of a microwave oven. The mounting plate 21 is formed to have approximately the same size so as to match the shape of the laminated surface of the laminated core body 12, and has four joining holes 22 corresponding to the four corners of the laminated surface of the laminated core body 12. Leg portions 24 are provided at both edges 21a that are formed as openings and that correspond to the direction perpendicular to the lamination direction of the laminated core body 12. This one leg portion 24 consists of a hook piece 25 that projects away from the laminated iron core body 12 from one edge portion 21a and whose tip is bent inwardly. It consists of a pair of mounting pieces 27 that project apart from the edge 21a toward the laminated core body 12 and each have a mounting hole 26 at the tip.

Then, as shown in FIG.
The mounting plate 21 is welded to the laminated iron core 12 by spot-welding the four joining holes 22 at the same time using a welding jig 30 disposed facing the mounting plate 21. At this time, the four joint holes 22 are spot welded at the same time, so they can be welded together in a short time, and
After welding, the joining hole 22 is melted and connected to the entire hole, and the welding strength with the laminated iron core body 12 is strengthened, and the mechanical strength of the mounting plate 21 is also strengthened.

The electromagnetic equipment provided in this way is, for example, a third
As shown in the figure, the hook piece 25 of one leg 24 is hooked onto a mounting base 37 which is fixed to the chassis 35 of the microwave oven and has a gas pipe 36 etc. inserted through the central part.
The mounting piece 27 of the other leg 24 is screwed to be mounted on the chassis 35.

[Effect of idea]

According to the present invention, in the mounting plate that is attached to the laminated surface of the laminated core body, the mounting plate is provided with legs at both corresponding edges in a direction perpendicular to the lamination direction of the laminated core body. At least four joining holes are formed in the plate corresponding to the four corners of the laminated surface of the laminated iron core body, and the plate is welded to the laminated surface of the laminated iron core body through these joining holes, so that the mounting plate is provided with legs. Even if the mounting plate is welded to the laminated core, it can be easily and reliably fixed to the laminated core without compromising the strength of the legs or interfering with welding work. This can save time.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the electromagnetic device of the present invention, Fig. 2 is an enlarged cross-sectional view of its main parts, Fig. 3 is an explanatory diagram showing its usage condition, and Fig. 4 is a conventional electromagnetic device. FIG. 12... Laminated core body, 13, 15... E-type core plate and I-type core plate as core plates, 17, 18
...Primary coil and secondary coil as coils, 21...Mounting plate, 21a...Both edges of mounting plate, 22...Joining hole, 24...Legs.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A laminated iron core body is formed by laminating iron core plates, and a coil is fitted into this laminated iron core body to form a closed magnetic path, and welded to the laminated surface of the laminated iron core body. In an electromagnetic device provided with a mounting plate according to An electromagnetic device characterized in that legs are provided on corresponding edges in a direction perpendicular to the other, and a mounting plate is welded to the laminated surface of the laminated iron core body through the joining hole. (2) The electromagnetic device according to claim 1 of the utility model registration, characterized in that the joint hole of the mounting plate is melted and buried in the entire joint hole by welding to the laminated iron core, and is welded to the laminated iron core.