JPS6122740A - Manufacturing method for rotor of flat motor - Google Patents

Abstract

PURPOSE:To facilitate the manufacture and the assembling of a single coil by forming the coil by winding a self-adhesive enameled wire, partly heating the coil, temporarily bundling it, and then annularly arranging to integrally mold it. CONSTITUTION:After a self-adhesive enameled wire is wound to form a single coil 4 of the prescribed shape, a plurality of portions P, Q on the periphery of the coil 4 are partly heated, thermally fusion-bonded between the enameled wires only at the portions and temporarily bundled. Thereafter, the coil 4 is annularly flatly arranged around a commutator segment 5, the entire coil is integrally molded with synthetic resin to form a flat rotor coil 3. Thus, the handling of the coil 4 can be facilitated, and since partly temporarily bundled, the containment in a jig at the time of molding can be improved.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a method for manufacturing a coreless rotor for a flat motor, which is formed by arranging a plurality of single filters of a predetermined shape in a flat shape around a rotating shaft. It is something.

[Prior art]

Conventionally, this type of rotor has been manufactured by the method shown in FIGS. 1 to 8. That is, in the figure, (8) is a rotor coil formed by combining a large number of single coils (4), (1
) is a mold that integrates this coil (8), (2) is a commutator consisting of many segments (5), and (6) is a sun wire.

The above-mentioned coreless rotor is manufactured by first winding a single coil (4) with enameled wire a predetermined number of times into a predetermined shape, then binding the periphery at multiple points or gluing the entire circumference, and then attaching the coil lead wire. (6) is connected to the segment (5) and arranged as shown in FIG. 8, and then molded and fixed in a flat shape using the mold (1).

Since the conventional device is manufactured by the above procedure, the work of binding or gluing the single coil (4) around the entire circumference after winding the wire is complicated, resulting in high cost.

[Summary of the invention]

This invention has been made in view of the above points, and is a method of constructing a single-coil enameled wire with a self-bonding enameled wire, and fixing the circumferential parts by heating and fusing piecemeal. This is an attempt to eliminate shortcomings.

[Embodiments of the invention]

The method of this invention will be explained below with reference to FIGS. 4(a) and 4(b). (4) is a single coil, which is made by winding the self-bonding enameled wire (7) around the frame a predetermined number of times, and then
It is formed by heating at two locations in 1Q and fixing the enameled wires at these locations by heat fusing.

Next, as shown in Fig. 8, this single coil (4) is assembled using a jig, the lead wire (6) is connected to the segment (5), and the rotor is completed by integrally forming the coil (4) with a mold. .

Note that the self-bonding enameled wire (7) is a drawn copper wire (8)k,
A polyester varnish (9) is applied by baking, and then an epoxy resin (semi-fused resin) α0) is applied and sealed.

Therefore, according to the procedure described above, the temporary bundling of the single coils (4) can be performed by partially heating the coils, making the work easier and automation easily possible.

Also, the temporary binding of the single coil (4) is not all fixed but partially fixed (P%Q 2 places in the one in Figure 4), so other W
Since the r portion is in a free state, it fits well in the jig during molding. In the L example, a case has been described in which the self-fusion wire is an enameled wire coated with polyester varnish, but it goes without saying that an enamelled wire made of other coatings may also be used.

〔Effect of the invention〕

According to this invention, a single coil constituting a flat motor is constructed by winding a self-bonding enameled wire,
Since the necessary parts around the coil are temporarily fixed in pieces, it is easy to manufacture and assemble the single coil, which has the effect of reducing manufacturing costs.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a rotor according to the prior art, Fig. 2 is a plan view of its single coil, Fig. 8 is a coil manufacturing process diagram, and Fig. 4 is a diagram for explaining an embodiment of the invention. In Figure 4 (
FIG. 4(a) is a plan view of a single coil, and FIG. 4(b) is a sectional view of a wire. In the figure, (1) is the mold, (2) is the commutator, and (3) is the mold.
) is rotor fill, (4) is single coil, (5) is commutator segment, (6) is Hiji wire, (7) is self-fused enameled A/wire, (8) is Wl copper-plated wire, (9) is a polyester varnish, (10) is a flyboxy resin, and PNQ is a heat-fused fixing part. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (2)

[Claims] (1) In a method for manufacturing a coreless rotor for a flat motor, which is formed by arranging a plurality of single coils of a predetermined shape in a flat shape around a rotating shaft, a single coil of a predetermined shape is formed by winding a self-fused enamelled wire. After forming the single coil, heat is applied to multiple locations on the circumference of the single coil to heat-fuse and fix the enamelled wires in these areas, and after arranging multiple wires in a flat shape around the rotating shaft, the entire coil is A method for manufacturing a rotor of a flat motor, characterized in that the rotor is integrally formed with a resin mold. (2) The flat according to claim 1, wherein the self-bonding enameled wire is constructed by baking a polyester coating on the outer periphery of a copper wire and coating the coating with an epoxy resin. Motor rotor manufacturing method.