JPS59106862A - Manufacture of cylindrical coil for motor - Google Patents

Abstract

PURPOSE:To improve the productivity by bending a circular coil unit aligned and wound intimately to manufacture a cylindrical element coil. CONSTITUTION:Bending projecting and recessing parts 7, 6 are pressed on circular coil units 5 which are aligned and intimately wound. The parts 6, 7 are alternately formed in even number on the entire periphery of the unit 5. The unit 5 is bent along the bending line at the conductor strips 8, 9 in such a manner that the one surfaces of the strips 8, 9 are intimately contacted in the recessing part 6 and the other surfaces of the strips 8, 9 are intimately contacted in the projecting part 7, and shaped so that the strips 8, 9 extend along the imaginary cylindrical surface 10 to form a cylindrical element coil 11.

Description

[Detailed description of the invention] The present invention relates to a method of manufacturing a cylindrical wire for an electric motor.

Generally, a cylindrical wire body is used as the rotor of a coreless motor, the rotor of a thrower 1 motor, and the stator of a brushless motor. Conventionally, a method called a honeycomb method has been known as a method for manufacturing such wire wheels. In this honeycomb method, a 41 GA body is formed by rotating a cylindrical winding frame provided with a large number of bottles and winding the conducting wire in an oblique direction. In this honeycomb method, high-speed mechanical winding is difficult because the wire is wound while suppressing the slippage of the conductor due to tension when folding the end face.Especially when forming a wire ring that is long in the axial direction and has a small diameter, There is a problem of inefficiency since a hook pin is inserted to prevent the conductor from slipping. In addition to this honeycomb method, there is a method of diagonally winding around a non-metallic bobbin, but it is difficult to wind in close alignment, the bobbin has to be thick so that it can withstand the tension of the conductor, and the misalignment causes gaps. There are drawbacks such as increase in size and accumulation of inactive parts at both ends of the bobbin.

The present invention was made in view of the above-mentioned circumstances, and it is an object of the present invention to provide a manufacturing method that can efficiently manufacture cylindrical wire shafts for electric motors that are closely wound in alignment.

The cylindrical shape for electric motor of this invention is described below with reference to the drawings.
An example of the second manufacturing method will be described. FIG. 1 shows a jig for manufacturing a cylindrical wire ring for an electric motor according to the present invention. This jig consists of a disc-shaped winding frame 2 that is attached to the rotating shaft 1 and a disc-shaped end plate 3 that is removable from the rotating shaft 1.
It consists of When one end of the conducting wire 4 is attached to this jig and the rotating shaft 1 is rotated, the conducting wire 4 is introduced between the end plate 3 and the disc-shaped winding frame 2 while being regulated by the end plate 3, as shown in the figure. The coils are wound in close alignment around the disc-shaped winding frame 2 to form a flat annular wire ring body 5 as shown in FIG. The annular wire body 5 that has been wound in close alignment is removed from the disc-shaped winding frame 2 by removing the disc-shaped end plate 3 from the rotating shaft 1. As shown in FIG. 3, concavo-convex portions 6 and 7 for bending are embossed on the annular wire ring body 5 wound on the alignment table using an appropriate jig (not shown). The uneven portions 6 and 7 for bending are formed alternately at even positions over the entire circumference of the wire ring body 5, and the troughs and tops thereof are defined as bending lines. This uneven part 6 for bending
．． 7, the ring body 5 has an even number of conductor bands 8.
, 9.

In this embossed annular II wheel body 5, the conductor bands 8 and 9 are bent along the bending line, and one side of the conductor bands 8 and 9 is in close contact with each other in the bending recess 6. , in the bending convex portion 7, the other surfaces of the conductor bands 8 and 9 are brought into close contact with each other,
The cylindrical element coil 11 is shaped so that the conductor bands 8 and 9 extend along the virtual cylindrical surface 10 as shown in Fig. M4.
is formed.

A plurality of cylindrical element wires 11 manufactured as described above are combined to form an electric (stage armature) as shown in FIG. 4. In the cylindrical element wire 11, the winding start end and the winding end of the conducting wire 4 of the wire wire body 5 are used as leads for the armature.

As described above, according to the method for manufacturing a cylindrical wire ring for an electric motor of the present invention, a circle that is closely wound in an aligned manner.

A cylindrical element wire can be easily manufactured by simply bending an annular wire ring, and the completed cylindrical element wire has conductors closely aligned and is sufficiently flat. Electric motors using wheels can make the gap between the rotor and stator sufficiently small, and can prevent the accumulation of inactive parts around the armature.

[Brief explanation of drawings]

FIG. 1 is a side view showing a jig for manufacturing the electrically applied cylindrical wire ring of the present invention, and FIG. 2 is a flat annular wire ring made from the jig shown in FIG. 1. J perspective view showing body, 3rd
The figure is a plan view, not showing the state in which the annular wire ring shown in FIG. A perspective view showing, and a fifth
The figure is a developed view of the cylindrical element wire shown in FIG. 4. DESCRIPTION OF SYMBOLS 1... Rotating shaft, 2... Disc-shaped winding frame, 3... Disc-shaped end plate 4... Conducting wire, 5... Annular wire ring body, 6.7.
...Concave and convex portion for bending, 8...Conductor band, 10...
Virtual cylindrical surface, 11...Cylindrical element line φtsu. Applicant's agent Patent attorney Taken Suzue

Claims (1)

[Claims] A flat annular wire ring is formed in which the conducting wire is tightly wound, and a plurality of wire wheels are formed by stamping the wire ring with alternating irregularities and bending the troughs and tops of the unevenness as lines. The conductor band is divided into conductor bands, and the annular wire ring is bent along the bending line, and the uneven parts are brought into close contact with the surfaces of one and the other of the annular wire rings, respectively, and the conductor band is placed on the cylindrical surface. A method for manufacturing a cylindrical wire ring for an electric motor, in which the outer shape is shaped into a cylindrical wire wheel by extending the wire.