JPH01152606A - Toroidal coil - Google Patents

Abstract

PURPOSE:To enable winding to be achieved without hitting against a protruded part by providing several protruded parts at the upper and lower edges of the outer periphery surface and by making the width in the axial direction wider than that of the rubber roller. CONSTITUTION:Several protruded parts 6a and 6b are provided at an upper edge 3a and lower edge 3b of an outer periphery surface 3 of an insulation core cover 2, a toroidal core 12 is inserted into an inner surface 7 of the insulation core cover 2, a disk-form cover 10 is blocked by an insertion hole 13, a rubber roller 14 of the toroidal winding machine is installed between the protruded part 6a at the upper edge and the protruded part 6b at the lower edge, a line-storing ring 16 is inserted and is rotated, and toroidal winding is performed. It allows winding to be performed without stopping the operation of a toroidal winding machine.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to toroidal coils used in electronic devices and the like.

``Prior art'' To take an example of conventional toroidal coil winding, toroidal coil winding using a toroidal winding machine involves storing approximately one insulated W1 wire in a wire storage ring to wind the toroidal coil. The wire is wound around the toroidal core by rotating the wire storage ring and unwinding the stored insulated wire from the wire storage ring, but the three rubber rollers that hold the toroidal core are rotated. The toroidal core is rotated to change the winding position of the insulated wire on the toroidal core, and the insulated wire is wound around the toroidal core so that its inner surface is aligned.

[Problems to be Solved by the Invention] As mentioned above, toroidal winding is performed in this way, but the toroidal core insulation has a protrusion on the outer circumferential surface for attachment to the center of the gate shape of the plastic molding. When the toroidal winding machine winds the wire on the case, the rubber roller for rotationally driving the insulating case hits a protrusion provided on the outer circumferential surface of the case, and the rotation of the rubber roller is stopped, or the insulation of the wound coil stops. Because the surface of the case on the passing side is disturbed, the toroidal winding machine had to be stopped and the rubber roller had to be manually fed to pass over the obstacle of the protrusion before winding. I had to.

This invention was made with the aim of improving these drawbacks.

[Means for Solving the Problems] In the present invention, the center of the protrusion provided on the outer peripheral surface of the toroidal core insulating case is cut out, and the width of the cut is made wider than the width of the rubber roller.

Alternatively, the above problem can be solved by providing a plurality of protrusions on the upper edge and the lower edge of the outer circumferential surface, and providing the width of the opposing protrusions wider than the width of the rubber roller. .

[Function] Even if the wire storage ring is rotated from this number i and the rubber roller is rotated accordingly to rotate the toroidal core insulating case, the rubber roller will not hit the protrusion provided on the outer peripheral surface of the toroidal core insulating case. Winding can be done without any problems.

[Example] Next, the present invention will be explained based on the drawings.

As an example, FIG. 1 is a perspective view and a partial plan view of a toroidal coil of the present invention molded with plastic.
FIG. 2 is a perspective view and a partial view of the toroidal coil of the present invention, and FIGS. 3 and 4 are diagrams of winding the toroidal coil of the present invention using a toroidal winding machine (only a portion is shown). .

As will be briefly explained in this drawing, a toroidal core insulator is provided with protrusions 6a and 6b on the upper and lower edges of the outer circumferential surface, respectively, to be attached to the center of a plastic molding die. The toroidal core is inserted into the inner surface 7 of the case, which has a U-shaped cross section, and the insertion opening 13 is inserted into the insulating case 2.
A hole prepared to match the size of the through hole 4! The wire storage ring 16 is inserted into the through hole 4.1 of the insulating case 2, and the wire storage ring 16 is closed by a circular insulating plate 10 with a circular insulating plate 4.
Then, the wire storage ring 16 is rotated to store the insulated coated wire 19. Next, the second wire storage ring 16 is rotated in the opposite direction, and the wire storage ring 16 is connected to the hole 11 of the insulating plate lO. While winding the coil 8 of the insulated coated wire 19 on top,
At the same time, the three rubber rollers 14 are rotated to align the inner surface of the insulating case 2 and wind the wire.

Moreover, FIG. 5 is a perspective view of another embodiment of this invention,
Figure 6 shows the toroidal core 32 in two insulating cases 2.
It is a figure inserted in 2.

This is a double cylindrical insulation case 22 with a U-shaped cross section.
A protrusion 26 is provided on the edge opposite to the insertion port 33 into which the toroidal core 32 is inserted, and two of the insulating cases 22 are used to cover the toroidal core 32 from above and below. As a result, it can be mounted on the rubber roller of the toroidal winding machine and wound in the same way as in the previous embodiment.

[Effects of the Invention] As explained above, the present invention can improve the toroidal winding of the conventional toroidal core insulating case by simply changing the center of the protrusion on the outer peripheral surface of the toroidal core insulating case to the width of the rubber roller. With this invention, the toroidal winding machine had to be stopped every time the rubber roller hit the protrusion on the outer peripheral surface, but with this invention, the toroidal winding direction of the toroidal core insulation case can be corrected. Now you can wrap it around without any hassle.

[Brief explanation of the drawing]

FIG. 1 is a partial cross-sectional perspective view of a coil of the present invention subjected to plastic molding, FIG. 2 is a perspective view showing a portion of an embodiment of the present invention, FIGS. The figure shows a combination of an insulating case in which a toroidal core is inserted into the toroidal winding machine (only a part of the winding machine is shown), FIG. 5 is a perspective view of another embodiment, and FIG. 6 is the same. A sectional view before winding the coil, and FIG. 7 is a perspective view showing some parts of the conventional method.
Figures 8 and 9 are a combination of an insulating case with a toroidal core inserted into the toroidal winding machine (only a part of the winding machine is shown);

Claims (1)

[Scope of Claims] 1. A toroidal coil having a U-shaped cross section and covered with an insulating case, in which an insulated coated electric wire is wound around a toroidal core, and then plastic molded. A toroidal coil in which a plurality of protrusions are provided on the edge and the lower edge of the coil, and an insulated coated electric wire is wound using a toroidal winding machine. 2 The toroidal core insulating case is located at the upper edge of the outer peripheral surface,
Claim 1 comprising a structure in which a toroidal core insertion opening having a U-shaped cross section and having a plurality of protrusions on the lower edge is closed by a circular insulating plate with a through hole in the center. Toroidal coil as described. 3. The toroidal core insulating case is provided with a plurality of protrusions on the outer peripheral surface of the insulating case, which has a U-shaped cross section, on the edge opposite to the toroidal core insertion opening, and the insulating case is
A toroidal coil according to claim 1, which is formed by covering the toroidal coil from above and below.