JPH02235314A - Winding of choke coil for common mode - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method of winding a common mode choke coil.

Conventional technology Originally, in the common mode choke coil 10, the first coil 8 and the second coil 9 are connected to each other as shown in FIG. It has a structure in which the wires are wound in directions that cancel out the magnetic flux generated by the line current. In such a configuration, in the conventional winding method, the first coil 80 and the second coil 9 are wound separately.

Problems to be Solved by the Invention In the conventional winding method, the winding of the first coil 8 and the winding of the second coil 9 are performed separately. Even in the case of wires, the number of steps was large and the manufacturing time was long, resulting in higher costs than choke coils for normal mode.

In view of the above problems, the present invention provides a winding method for simultaneously winding a first coil and a second coil on a closed magnetic path.

Means for Solving the Problems In order to solve the above problems, the half length of the wire rod of known length required for winding the first coil and the second coil is set as U. Fold it into a U shape, place the folded part along the toroidal closed magnetic circuit core, and rotate the U-shaped part with respect to the toroidal closed magnetic circuit core while feeding the wires in pairs. Divide the coils spiraling on the left and right sides of the character part, and add the number of coils desired for the first coil and the number of coils desired for the second coil to make the same number of coils. At this point, the rotation of the U-shaped portion is stopped, and the tip of the U-shaped portion is cut off, thereby winding the first coil and the second coil simultaneously on the closed magnetic path.

Effect According to the above means, the first coil and the second coil can be wound simultaneously on the closed magnetic path in the direction of canceling out the magnetic flux generated by the line current, thereby reducing the number of steps and manufacturing time. I can figure it out.

Example Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing the initial state when winding a toroidal closed magnetic circuit core 1 using the winding method of the present invention, and FIG. 2 is an explanatory diagram showing the process of the winding method of the present invention. be.

Fold half the length 3' of the wire 2, which is the length necessary for winding the first coil 8 and the second coil 9, into a U-shape.
The folded portion 3 is placed along the toroidal closed magnetic circuit core 1.

Next, the wire rods 2, which have been folded into a U-shape and become a pair, are fed in the winding direction, and at the same time, the U-shaped portion 3 is rotated relative to the toroidal closed magnetic circuit core 1, and the U-shaped portion 3 is The wire rings 6 and 7 spiraled left and right are divided into left and right. Here, the wire ring 6 becomes the later first coil 8, and the wire ring 7 becomes the later second coil 9.

When the number of wires equal to the desired number of wires of the first coil 8 and the desired number of wires of the second coil 9 is obtained, the U-shaped portion 3 is rotated and the wires are divided. The desired common mode choke coil 10 is completed in one winding process by stopping the U-shaped part, cutting the tip 3' of the U-shaped part, and using the cut part and the terminal ends 4 and 5 of the wire as lead wires. .

Effects of the Invention As detailed above, the method of winding a common mode choke coil according to the present invention allows the first coil and the second coil to be simultaneously wound on a closed magnetic path, reducing the number of winding steps. In addition to reducing manufacturing time and automating the winding process, it is possible to minimize the amount of waste wire. Therefore, the wire winding method of the present invention results in considerable labor savings and cost reduction, and is said to have extremely large industrial effects.

Further, since the U-shaped portion is used as a fixing portion during winding, the winding device can be easily simplified.

[Brief explanation of drawings]

FIG. 1 is a top view showing the initial state when winding is performed using the common mode choke coil winding method of the present invention, FIG. 2 is an explanatory diagram showing the process of the winding method of the present invention, and FIG. The figure is a top view of a common mode choke coil using a toroidal closed magnetic circuit core. 1... Toroidal closed magnetic circuit core, 2...
・Wire rod, 3... U-shaped part, 3'... U-shaped part tip, 4, 5... End of wire, 6, 7,
8, 9...Winding, 10...Common mode choke coil. Name of agent: Patent attorney Shigetaka Awano and 1 other person Fig. Fig. Section Materials ■ Roytal is worth N10,000 worth of money Fig.

Claims (1)

[Claims] Using a toroidal closed magnetic circuit core, fold a wire of known length required for winding the first and second coils into a U-shape. The U-shaped part is rotated with respect to the toroidal closed magnetic circuit core while feeding a pair of wire rods, and the wire is spiraled to the left and right of the U-shaped part. Divide the ring into left and right parts, stop the rotation of the U-shaped part when the desired number of wire rings of the first coil and the desired number of wire rings of the second coil are obtained, and cut the tip of the U-shaped part. , a common mode choke coil winding method in which a first coil and a second coil are simultaneously wound on a closed magnetic path.