JP2686590B2 - How to make a rectangular coil - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a rectangular coil by winding a ribbon band having a narrow width into a coil shape.

[0002]

2. Description of the Related Art A rectangular coil is shown in FIG.
It is formed by winding the ribbon wire 1 in the shape of a narrow band as shown in FIG. The ribbon wire 1 is shown in FIG.
As shown in the enlarged vertical cross-sectional view of line VI-VI, narrow strip-shaped copper foil 4
Is formed by covering the entire surface of the substrate with the insulating film 5. When manufacturing the rectangular coil, the insulating film 5 on one surface of the one end portion and the other surface of the other end portion of the ribbon wire 1 cut into a required length is partially peeled off to form a copper wire. The exposed foil surfaces 2 and 3 are formed, and then the ribbon wire 1 is wound into a coil to expose both exposed copper foil surfaces 2 and 3 on the inner and outer peripheral surfaces, respectively, as shown in FIG. To do so. In addition, 6 in FIG. 6 is a fusion bonding layer.

When manufacturing a rectangular coil, a ribbon wire 1
To wind the coil in the form of a coil, conventionally, as shown in FIG. 7, a winding tool 7 in which a slit-shaped opening 8 along the axial direction is formed in the body of a cylindrical body is used. It was That is, as shown in FIG. 7 (A), first, one end of the ribbon wire 1 is inserted into the cylinder through the slit-shaped opening 8 of the winding tool 7, and then, as shown in FIG. 7 (B), Wrapping tool 7
Is rotated about its axis, and the ribbon wire 1 is wound around the outer cylindrical surface of the winding tool 7. Then, the winding tool 7 is continuously rotated, and the ribbon wire 1 is wound around the winding tool 7 as shown in FIGS. 7 (C) and (D). Wrapping tool 7
When the ribbon wire 1 is wound up to the end of the ribbon wire, the winding tool 7 is pulled out from the coiled material, and as a result, as shown in FIG.
The rectangular coil 9 as shown in (E) is completed.

[0004]

However, in the above-described conventional manufacturing method, in the process of winding the ribbon wire 1 in the coil shape, the winding portion for each winding is slightly displaced in the axial direction, and the bamboo piece shape is obtained. However, there is a problem in that it cannot be wound into a coil properly. Also, the rectangular coil 9
The portion 9a of the winding start portion, which is folded inward, is completely unnecessary for the rectangular coil, and rather serves as an impeding element, which causes deterioration of the Q characteristic of the rectangular coil (about 10%). Further, if the bent portion 9b is bent, the Q characteristic of the rectangular coil is significantly reduced (about 50%).

The present invention has been made in view of the above circumstances, and it is possible to manufacture a rectangular coil accurately wound in a coil shape, and a bent portion is formed on a ribbon wire. It is an object of the present invention to provide a manufacturing method capable of obtaining a rectangular coil which is excellent in quality without any occurrence.

[0006]

In carrying out the method for manufacturing a rectangular coil according to the present invention, a winding member having a flat surface, and a winding shaft integrally hung at the center of the flat surface, A contact member having a flat surface portion, the flat surface portion being parallel to the flat surface portion of the winding member and being opposed to the winding shaft at a distance slightly smaller than the width dimension of the ribbon wire; Use a winding frame. Then, the starting end portion of the ribbon wire in the shape of a narrow strip is curved along the peripheral surface of the winding shaft of the winding member and wound around the winding shaft, and then,
The abutting member is engaged with the winding shaft of the winding member, and both flat surfaces of the winding member and the abutting member are provided on both sides of the starting end of the ribbon wire wound around the winding shaft. After abutting, the winding frame is rotated around the axis of the winding shaft to wind the ribbon wire around the winding shaft, and the ribbon wire is wound to the end of the winding shaft of the winding frame. After being wound around, the coiled ribbon wire is removed from the winding frame.

[0007]

In the winding frame used for carrying out the above-described method for manufacturing the rectangular coil, the flat surfaces of the winding member and the abutting member are in mutual contact when the abutting member is engaged with the winding member. It is arranged so as to face each other in parallel, and the distance between the two flat portions is slightly smaller than the width dimension of the ribbon wire. Therefore, in the above manufacturing method, the ribbon wire is wound around the winding shaft in a state where both sides of the ribbon wire are in contact with the flat surfaces of the winding member and the contact member of the winding frame. Therefore, as in the conventional manufacturing method,
Ribbon wire wound in a coil does not become a bamboo shoot. In addition, the flat coil manufactured by this method has a winding start portion that conforms to the inner circumferential surface of the coiled product, and the winding start portion of the flat coil is the same as in the conventional manufacturing method. There is no possibility that the material will be folded inward from the inner peripheral surface and that the winding start portion will not be bent.

[0008]

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

First, in order to carry out the manufacturing method according to the present invention, a winding frame 10 having an example of the structure shown in FIG. 1 is used. This winding frame (10) has a flat surface portion (14), and a winding member (12) integrally provided with a winding shaft (16) at the center, and a flat surface portion.
It has a contact member 18 having a recessed portion 22 in which a tip end portion of the winding shaft 16 is fitted and fixed. Then, the winding shaft 16 of the winding member 12 is attached to the contact member.
When the two members 12, 18 are integrated by being engaged with the recess 22 of the 18, as shown in FIG. 2, the flat portions 14, 20 of the both members 12, 18 face each other so as to be parallel to each other. Both flat parts 14,
The distance l between the two is slightly smaller than the width w of the ribbon wire 1. For example, if the width w of the ribbon wire 1 is 1.45 mm, the distance l between the two flat surface portions 14 and 20 is set to about 1.40 to 1.42 mm.

Next, a procedure for manufacturing a rectangular coil using the winding frame 10 will be described with reference to FIG. In FIGS. 3C and 3D, the winding frame 10 in which the winding member 12 and the contact member 18 are assembled is shown in FIG.
FIG. 5 is a view of cutting along 20 and showing a cross section thereof in the direction of a winding member 12.

First, as shown in FIG. 3A, the ribbon wire 1 is brought into contact with the peripheral surface of the winding shaft 16 of the winding member 12 of the winding frame 10 to wind the tip end portion of the ribbon wire 1. By rotating the winding member 12 while pressing it against the shaft 16, the distal end portion of the ribbon wire 1 is curved along the peripheral surface of the winding shaft 16, and as shown in FIG. The winding portion 1a around the winding shaft 16 is formed in the portion. At this time, as indicated by a chain double-dashed line in FIG. 3A, the rotary roller 24 for pressing the ribbon wire 1 against the winding shaft 16 is used.
May be provided. After the winding portion 1a is formed on the tip end portion of the ribbon wire 1, as shown in FIG. 2, the contact member 18 is attached to the winding shaft 16 of the winding member 12, and the flat portion 14 of the winding member 12 is attached. Also, the flat portion 20 of the contact member 18 is brought into contact with both sides of the tip end portion of the ribbon wire 1, respectively. continue,
By rotating the winding frame 10 around the axis of the winding shaft 16, the ribbon wire 1 is wound around the winding shaft 16 as shown in FIGS. 3 (C) and 3 (D). And the winding shaft 16
When the ribbon wire 1 is wound up to its end, the contact member 18 is removed from the winding member 12 of the winding frame 10, and then the coiled ribbon wire 1 is removed from the winding shaft 16 of the winding member 12. . As a result, the rectangular coil 26 as shown in FIG. 3 (E) is obtained.

In the above-described manufacturing method, the winding wire 12 and the contact member of the winding frame 10 are formed on both sides of the ribbon wire 1.
Since the ribbon wire 1 is wound around the winding shaft 16 while being in contact with both flat surface portions 14 and 20 of 18, the ribbon wire 1 wound in a coil shape does not become a bamboo shoot shape, The winding start portion 26a of the flat coil 26 has a shape along the inner peripheral surface of the coiled material.

[0013]

Since the present invention is constructed and operates as described above, according to the manufacturing method of the present invention,
A rectangular coil excellent in quality can be obtained because the ribbon wire is accurately wound in a coil shape and no bent portion is formed on the ribbon wire.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an example of the structure of a winding frame used for carrying out a method for manufacturing a rectangular coil according to the present invention.

FIG. 2 is a part of a ribbon wire in which a tip end is wound around a winding frame in which a contact member is engaged with a winding shaft of the winding member to integrate the two members. It is a perspective view shown with.

FIG. 3 is a plan view of the manufacturing method according to the present invention.
FIG. 6 is a diagram for explaining an example of a procedure for manufacturing a rectangular coil using the winding frame shown in FIG.

FIG. 4 is a perspective view showing an example of a configuration of a rectangular coil.

FIG. 5 is a plan view of a ribbon wire used as a material for manufacturing a rectangular coil.

6 is an enlarged vertical sectional view taken along line VI-VI of FIG.

FIG. 7 is a diagram for explaining a procedure for manufacturing a rectangular coil by a conventional method.

[Explanation of symbols]

 10 winding frame 12 winding member 14 flat surface of winding member 16 winding shaft 18 contact member 20 flat surface of contact member 22 recess of contact member 26 flat coil

Claims (1)

(57) [Claims] 1. A method for manufacturing a rectangular coil by winding a ribbon wire in the form of a narrow strip into a coil shape, and a winding member having a flat surface portion and a winding shaft integrally hung in the center of the flat surface portion. A contact member having a flat surface portion, the flat surface portion being parallel to the flat surface portion of the winding member and being opposed to the winding shaft at a distance slightly smaller than the width dimension of the ribbon wire; Using a winding frame consisting of, winding the starting end of the ribbon wire along the circumferential surface of the winding shaft of the winding member and winding it around the winding shaft, and then winding shaft of the winding member. After the contact member is engaged with the winding member and both flat surfaces of the winding member and the contact member are brought into contact with both sides of the starting end portion of the ribbon wire wound around the winding shaft, Rotate the mounting frame around the axis of the winding shaft,
The ribbon wire is wound around a winding shaft, and the coiled ribbon wire is removed from the winding frame after the ribbon wire is wound around the winding shaft of the winding frame to the end. The method of making a rectangular coil.