JPS6196711A - Gapped core type reactor - Google Patents

Abstract

PURPOSE:To unnecessitate the tie-rod which is used for tightening of a core leg in the past by a method wherein a clamp and a side leg cover plate are coupled in such a manner that tensile force is generated in vertical direction on the side leg cover plate. CONSTITUTION:As the coupled clamp 11 and the cover plate 51 are tightened by a tightening bolt 10, a core leg 21 is tightened by the cover plate 51 which performs an additional function as a tie-rod, and the tie-rod used in the conventional structure is unnecessitated, thereby enabling to reduce the number of parts needed. Also, as a yoke 1 is coupled and tightened to a side leg 5 by the clamp 11, a side leg crossbar 12 and a tightening bolt 14, the side leg coupling tie-rod used in the conventional structure is unnecessitated, and the number of parts used can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an iron core type reactor with an improved core fastening structure.

[Technical background of the invention and its problems]

Conventional gapped core reactors are made by bonding laminated silicon steel strips to form a block core 2, as shown in Figures 1 and 2. In order to create a gap between each block core 2, a gap insulator is used. The block iron core 2 and the gap insulator 3 are alternately stacked one on top of the other to form the iron core leg 21. The coil 4 is attached to the core leg 211, the upper yoke 1 is brought into contact with the core leg 21, and the upper yoke 1 and the core leg 21 are firmly tightened together.

Conventionally, this iron core leg 21 has been tightened by using four tie rods (6) 1 via a cross bar 7, as shown in FIG. 1, for example.

For the side leg 5, a strong side leg backing plate 51 and a side leg tightening bolt 8 are used to firmly tighten the laminated silicon steel strips.
(In order to form the entire iron core system into one body) This side leg cross spar 12 and side leg connecting tie rod 13 connect the side leg 5 and the upper yoke 1.
were connected.

As mentioned above, in the core reactor with a gap, the core legs 21
In order to tighten the entire core system, separate clamping plates and tie rods are required for each arm, resulting in an uneconomical structure with a large number of parts and one tie rod for tightening the core legs. 6
Due to its tightening mechanism, it must be placed closer to the coil than the side leg 5, and thick insulation must be provided to ensure insulation from the coil 4, which is a problem that should be improved. There was a point. - [Object of the Invention] The present invention has been made in consideration of the above points, and its purpose is to reduce the number of parts by providing multiple functions to one member, and thus to reduce the economic gap. The purpose of the present invention is to provide an iron core type reactor.

[Summary of the Invention] In order to achieve the above object, the present invention forms a gapped core by arranging a plurality of block cores made of laminated silicon steel strips with gaps interposed therebetween. Then, attach one winding to this gapped core, clamp the laminated silicon steel strips at both ends of the gapped core with two clamps, and tighten the upper yoke. The laminated silicon steel strip is sandwiched between two side leg abutment plates and intersected with the tightened side body, and the side leg abutment plates are connected to one clamp and the side leg abutment plates so that a tensile force is generated in the vertical direction. This method is characterized by tightening the core legs through the raised upper yoke and eliminating the tie rods conventionally used to tighten the core legs. Further, it is preferable that the intersection between the clamp and the side leg abutment plate is formed by an auxiliary member other than the clamp and the abutment plate. Further, it is preferable that the upper clamp is connected and tightened so that a tensile force is applied to the side leg cross spar and the clamp.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. Third
In the figure, the actuator carving that forms the core with a gap is completed as follows. The laminated silicon steel strips are bonded to form a block core 2, and each block core 2 is
A gap insulator 3 is sandwiched between them, and the block core 2 and gap insulator 3 are stacked alternately to form a gapped core 2.
form 1. The coil 4 is attached to the gapped core 21, the gapped core 21 is sandwiched between the clamp 11, the yoke 1 tightened with the yoke tightening bolts 9 and the crossbar 7, and the side leg support plate 51 and the side The side leg 5 tightened with the leg tightening bolt 8 and the clamp 11 intersect to tighten it.10-'r'The yoke 1 and the side leg 5 are connected as one body. The clamp 11 is also connected to the side leg 5 by a side leg crossbar 12 and a tightening bolt 14.

Next, the first function and effect of the present invention will be explained.

Since the clamp 11 and the plate 51 connected as described above are tightened with the tightening bolt 10, the backing plate 51 also serves as a tie rod to tighten the core leg 21.
FIG. 2: The tie rod 6 in the conventional structure shown is no longer necessary, and the number of parts can be reduced.

In addition, the yoke 1 is connected and tightened by the clamp 11, the side leg cross spar 12, and the tightening bolt 141, so the first. The side leg connecting tie rod 13 in the conventional structure shown in FIG. 2 is not required, and the number of parts can be reduced.

FIG. 6 shows a clamp 11 and a backing plate 5 according to another embodiment of the present invention.
1 does not cross directly but is crossed using a medicine fork auxiliary member 15, but it is connected and tightened with a backing plate 51 by a tightening bolt 10, and the tightening bolt 14 and side cross spar 12
The action and effect of connecting and tightening the first side leg 5 are the same.

[Effects of the Invention] As explained above, according to the present invention, the tie rods for tightening the core legs and the tie rods for connecting and tightening the yoke and side legs can be omitted, and an economical core reactor with a gap can be created. Obtainable.

[Brief explanation of the drawing]

Figure 1 is a front view of a conventional gapped iron core reactor.
FIG. 2 is a plan view, FIG. 3 is a front view of an iron core reactor with a gap according to an embodiment of the present invention, FIG. 4 is a side view of the main parts, FIG. 5 is a plan view, and FIG. FIG. 3 is a plan view of main parts of another embodiment of the present invention. 1... Upper yoke 2... Block core 3...
・Gap insulator 4...Coil 5...Side leg
11...Yoke clamp 51...Side leg backing plate 12...Side leg cross spar 14...Tightening bolt 15...Auxiliary member 16...Connection bolt 21...
・Gap core (7317) Agent: Kensuke Chika, patent attorney (and 1 other person) Figure 1

Claims (3)

[Claims] (1) In a gapped core reactor in which a plurality of block iron cores made of laminated silicon steel strips are stacked alternately with insulators in between, the side leg abutment plates and yoke clamps are crossed to form the side leg abutment plates. An iron core type reactor with a gap, characterized in that the iron core legs are tightened by tightening them so that a tensile force is generated in the upward and downward directions. (2) An iron-core reactor with a gap according to claim 1, characterized in that an auxiliary member is used to form an intersection at the intersection between the yoke clamp and the side leg support plate. (3) At the intersection of the yoke clamp and the side leg backing plate, the side leg crossbar and the clamp are connected and tightened with a tightening bolt so that a tensile force is generated on the yoke clamp. Iron-core reactor with gap as described in .