JPS5879446A - Manufacture of field coil - Google Patents

Abstract

PURPOSE:To enhance the mass productivity of a field coil and to facilitate the machining of a lead wire of the coil by bending in advance the starting end of a wound field coil in the prescribed shape and connecting it with the lead wire. CONSTITUTION:A flat conductor is laminated and wound from the starting end 101 at the outer periphery to wind a field coil 10, and a lead wire 11 made of a flat conductor which is bent in advance in a lead wire shape is electrically and mechanically connected to the end 101 of the coil 10 via an electric resistance welding machine 12. The lead wire of the finishing end 102 of the coil 10 is formed by bending.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method of creating a field coil used in a field device for a DC motor, particularly in which a rectangular conductor is wound.

Conventionally, there was a product manufactured by this type of method as shown in FIG. In FIG. 1, %l is a field coil assembly, and 2 and 3 are field coils, which are sunrise parts 201 and 202, respectively.

301 and 302 are formed by bending a winding start end K and a winding end end K as shown.

Further, 4 and 5 are pressure equalization lines, and the above-mentioned sunrise part 201
, 202, 301 and 302 are connected by electric resistance welding as shown, and the field coils 2 and 3 are connected in parallel.

One end of the pressure equalizing wire 5KUIJ-do@6 is electrically and mechanically connected by electric resistance welding.

The other end of the lead wire 6 is connected to the illustrated closing switch and receives an input current.

Further, in the 7-hiro electric brush, the pigtail connecting wire 8 is connected to the pressure equalizing wire 4 by electric resistance welding, and the sliding contact body 9 is in sliding contact with a commutator of an armature (not shown), so that an energizing action is performed. It will be done.

In addition, the inner peripheral spaces A and B of the field coils 2 and 3
A ball (field pole) (not shown) is inserted into the coil and is energized by the field coils 2 and 3. The sunrise portions 201 and 301 are bent in advance as shown in the figure before the coil is turned.

Further, the sunrise portions 202 and 302 are bent as shown in the figure after coil winding.

Conventional field devices are manufactured using the method described above.
Since the inner circumferential surface sunburst portions 201 and 301 are bent in advance into the required sunshape shape, the manufacturing equipment ( The automatic coil winding machine (automatic coil winding machine) was complicated and expensive, required a lot of manufacturing time, and was not suitable for mass production.

This invention was made to eliminate the drawbacks of the conventional manufacturing method as described above, and by forming the complex sunrise part separately and manufacturing it in parallel with the coil winding part, it is extremely easy to mass produce. An object of the present invention is to provide a method for manufacturing a field coil with a high field strength.

An embodiment of the method for manufacturing a field coil according to the present invention will be described below with reference to FIGS. 2 to 4.

First, in FIG. 2, the winding 10 shown in FIG. 2a is not subjected to any special bending process, and can be manufactured at an extremely high speed.

Further, numeral 11 in FIG. 2 is a front view of a Hijiden wire manufactured separately from the field coil, and FIG. 2C is a side view thereof.

Next, in FIG. 3, reference numeral 12 denotes an electrode of an electric resistance welding device (not shown), and a lead wire 1 is attached to the winding start portion 101 on the inner peripheral surface.
1 is placed, and both members are pressed as shown in the figure, and the lead wire 11 is electrically and mechanically connected to the winding start portion 1 on the inner peripheral surface by being energized and energized.
A connection is made to 01. Further, the winding end portion 102 is twisted as shown by arrow C in FIG. 3, and a sunrise portion is processed as shown.

Further, numeral 13 in FIG. 4 is a single-pole field coil, which is a completed product processed by the processing method shown in FIG.

14 is the winding end portion 10 bent by the process shown in FIG.
2, and the particular pressure equalization line 4 in Fig. 1 mentioned above.
is connected.

The above-mentioned one-pole polarized field coil 13 is manufactured by adjusting the lead wire shape to the required shape for each pole, and the necessary electrical and mechanical connections are made to the field coil to form the above-mentioned figure 1. When shown, a similar configuration device is completed.

In addition, the sunrise wire 11 fixed to the inner winding start portion 101 is
The outside of the connection part may be treated with an insulating coating in advance.
FIG. 51 (front view) and FIG. 5b (side view) K will be explained. 15 in Fig. 5 1 and Fig. 5 blc is a powder coated rectangular conductor 16 bent into the required shape.
7, and is connected to the inner circumferential winding start portion 101 of the field coil 10 through the particular processing steps shown in FIG. 3 described above.

As described above, according to the method for manufacturing a field coil of the present invention, the Hide wire connected to the winding start portion of the field coil is manufactured as a separate structure, and the winding of the field coil is wound. Since it is connected at the beginning, it has the advantage of being extremely mass-producible and making it possible to easily process the sun wire at a low cost.

[Brief explanation of drawings]

Fig. 1 is a plan view of a field device manufactured by a conventional field coil manufacturing method, and Fig. 2 shows a field coil in an unwound state applied to an embodiment of the field coil manufacturing method of the present invention. 2 is a front view of the coil, FIG. 2 is a front view of the Hiji wire applied to the method of manufacturing a field coil of this invention, FIG. 2 C is a side view of FIG. 2a, and FIG. Figure 4 is a front view of the field device completed by the processing operation shown in Figure 3. Figure 5 is a diagram for explaining the processing work according to the method of manufacturing the field coil, and Figure 5 1 shows the manufacturing of the field coil of the present invention. FIG. 5A is a front view of the Hinode line applied to another embodiment of the method, and FIG. 5A is a side view of FIG. 10... Field coil, 101... Inner peripheral surface winding start part,
102... Winding end part, 103°°・Coil winding part, 1
1, 15 Hijide line, 13...-polarized field coil, 16
...Flat conductor, 17...Powder coat. Note that the same reference numerals in the figures indicate the same or corresponding parts. Agent Shin Kuzuno −

Claims (1)

[Claims] In a field coil composed of a rectangular conductor wound around the field core of a DC motor, the inner peripheral surface of the unwound field coil is formed by winding the rectangular conductor in layers from the inner core to the outer circumference. A method for manufacturing a field coil, characterized in that the field coil is electrically and mechanically connected to a Hiji wire that has been bent into a required Hiji shape in advance.