JPS6240042A - Manufacture of flat coil - Google Patents

Abstract

PURPOSE:To reduce the number of heating times and to prevent the deterioration of an insulating material by performing simultaneously the permanent adhesion of the armature temporarily adhered and the adhesion of the armature rotor hub temporarily adhered. CONSTITUTION:Against a temporarily adhered armature 1 put fixedly on the bedplate 4a, a discal insulating material 3' and a rotor hub 2, the pressure portion 4b descends so that the temporarily adhered armature 1 may be forcibly pressed to the rotor hub 2 through the discal insulating material 3. Then, when the high-frequency induction current is generated by conducting a work coil 5, a flat coil strand 1' generates heat and the hardening reaction is caused to the discal insulating materials 3 and 3'. As a result, the flat coil strand 1' and the discal insulating material 3 get firmly adherent so as to perfect the adhesion with the temporarily adhered armature and at the same time the discal insulating material 3', the temporarily adhered armature 1 and the rotor hub 2 can get firmly adhered.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to a method of manufacturing a flat coil to be incorporated into a flat motor or the like. More specifically, the present invention relates to an improvement in a method for manufacturing a flat coil, which involves assembling a rotor hub with an armature in which a disc-shaped insulating material is arranged between a large number of flat coil wires.

Background of (CI) Technology Flat motors are used in a wide range of fields because they can save installation clearance, but the thinner flat coils built into them correlate with the flatness of flat motors. has.

For this reason, various flat coils have been developed.
Among these, a flat coil is provided in which an armature made of a disk-shaped insulating material arranged between a large number of flat coil wires formed by pressing a copper plate or the like is assembled to a rotor hub.

FIG. 4 shows a plane view of this flat coil, and shows a state in which the rotor hub 2 is assembled in the center of the armature 1.

Since such a flat coil requires complicated manufacturing processes such as temporary adhesion of the armature, nine layers of adhesion, and adhesion of the armature 1 and the rotor hub 2, development of a simple manufacturing method has been expected.

(c) Prior art and problems Conventionally, flat coils have been manufactured by the following method.

First, a large number of flat coil wires are placed on a disc-shaped insulating material (epoxy resin impregnated glass cloth prepreg), clamped on a heating plate, and heated at 160-170°C for 10-30 seconds to form a temporarily bonded armature. do. Then, the insulating material is arranged between a plurality of temporarily bonded armatures and sandwiched between heating plates,
Mainly cured and adhered at 170 to 190°C for 30 to 50 minutes to form a main bonded armature. After removing blood, the main adhesive armature is fitted onto the rotor hub via the insulating material and pressurized, set on a trolley, and heated and bonded in a furnace at 190 to 220° C. for 30 to 50 minutes.

In such conventional methods, the formation of the temporary adhesive armature can be automated, but the formation of the main adhesive armature is a batch operation, which requires a large amount of manpower and creates a time lag between the next process. There are manufacturing problems such as. Further, since the insulating material is heated twice before the bonding armature and the rotor hub are bonded together, there is a risk that the insulating material may deteriorate due to the heating of the bonding between the bonding armature and the rotor hub, resulting in product defects.

Object of the Invention The present invention has been made in view of the problems of the conventional example described above, and its purpose is to simplify the manufacturing process and to improve the finished product.

K) Structure of the Invention In order to achieve this object, the method for manufacturing a flat coil according to the present invention uses a temporarily bonded armature formed by disposing a disc-shaped insulating material between a large number of flat coil wires, and a disc-shaped insulating material. The main bonding of the temporary bonding armature and the temporary bonding armature are performed by a pressurizing jig that is fitted to the rotor hub through and equipped with high-frequency induction heating means.

We decided to glue the rotor hub together at the same time.

(G) Function The method for manufacturing a flat coil according to the present invention reduces the number of times of heating and prevents deterioration of the insulating material by simultaneously performing the main bonding of the temporarily bonded armature and the bonding of the temporarily bonded armature and rotor hub. , which simplifies the manufacturing process.

(G) Embodiments of the Invention Hereinafter, embodiments of the method for manufacturing a flat coil according to the present invention will be described with reference to FIGS. 1 to 3.

Figure 1 shows the method for manufacturing a 1° flat coil wire.
A flat coil wire 1' is formed from a plate-shaped conductive material such as a copper plate using a notching press. Then, as shown in FIG. 2, a disc-shaped insulating material 3 is arranged between the flat coil wires l',
Clamped between heating plates heated to approximately 160℃, 20kg/c
Heat and pressurize for about 20 seconds under nl pressure. After heating and pressurizing, the inner circumference I and the outer circumference O are cut and the flat coil wire 1' is connected by argon welding.

The temporarily bonded armature 1 thus formed is the third
As shown in the figure, it is fitted to the rotor hub 2 via a disc-shaped insulating material 3' and installed on a pressurizing jig 4.

The pressurizing jig 4 consists of a base 4a having a recess 4a' to which the rotor hub 2 is fixed, and a pressurizing part 4b that can be moved up and down on the base 4a, and the pressurizing part 4b oscillates a high-frequency induced current. A work coil 5 for this purpose is incorporated. This work coil 5 is spirally wound outward from the center.

As shown in FIG. 3, the temporary adhesive armature 1 placed on the base 4a. Disk-shaped insulator 3°, relative to rotor hub 2,
The pressurizing part 4b descends and presses the temporarily bonded armature l against the rotor hub 2 through the disc-shaped insulating material 3. Then, the work coil 5 is energized, for example, at 8,000 volts for about 20 volts.
When the second heating wave induced current is oscillated, the flat coil wire 1'' generates heat to approximately 190°C, causing a hardening reaction in the disk-shaped insulating materials 3, 3, and causing the flat coil wire 1'' and the disk-shaped insulating material 3 to undergo a hardening reaction. At the same time, the temporarily bonded armature 1 is firmly bonded to the disk-shaped insulating material 3' and the temporarily bonded armature 1 and rotor hub 2.

If the blood is removed and the pressurizing part 4b is raised and the product is taken out, a product in which the armature 1 is assembled to the rotor hub 2 is obtained. The peel strength of each flat coil wire of this product was 240 gf/2 mm, and the slip strength between armature 1 and rotor hub 2 was 200 kgf.

It is understood that this method has the same or higher strength than the conventional method. Moreover, the flatness of this product and the heat resistance strength of the adhesive surface were also good.

As described above, the method for manufacturing a flat coil according to the present invention involves simultaneously performing main bonding of the armature and bonding to the rotor hub, and performing the bonding in a short time using high-frequency induction heating, and does not require a single large furnace or the like. As a result, the manufacturing process can be shortened and made more efficient, and heating energy can be further reduced. It is also possible to automate the process from temporary bonding of amateur coils to the final product.

Furthermore, by reducing the number of heating steps, deterioration of the insulating material can be avoided, and the finished product can be improved.

(H) Effects of the Invention As described above, according to the present invention, since the armature is bonded and the armature and the rotor hub are bonded by high-frequency induction heating, productivity is improved and a flat coil can be provided at low cost.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a means for manufacturing a flat coil wire according to the present invention, FIG. 2 is a sectional view showing the structure of a temporarily bonded armature according to the present invention, and FIG. 3 is a plan view showing the structure of a temporarily bonded armature according to the present invention. FIG. 4 is a sectional view showing the assembly means, and a plan view showing the general shape of the flat coil. 1... Amateur (temporarily bonded armature), 2... Rotor hub, 3,3゛... Disc-shaped insulation material, 4...
・Pressure jig. Figure 1 Figure 2 Figure 3 Figure ↓

Claims (1)

[Claims] A temporarily bonded armature consisting of a disc-shaped insulating material arranged between a large number of flat coil wires is fitted to the rotor hub via the disc-shaped insulating material, and a pressure jig equipped with high-frequency induction heating means is used to temporarily bond the armature. A method for manufacturing a flat coil, characterized in that the main bonding of the bonded armature and the bonding of the temporarily bonded armature and rotor hub are performed at the same time.