JPS5931292B2 - Method for manufacturing cylindrical wire rings for electric motors - Google Patents

Description

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

Generally, a cylindrical wire body is used as a rotor of a coreless morph, a rotor of a slotless morph, and a stator of a brushless morph.

Conventionally, a method called a honeycomb method has been known as a method for manufacturing such wire wheels.

In this No. 1 Necam method, a wire ring is formed by rotating a cylindrical winding frame provided with a large number of pins and winding the conducting wire in an oblique direction.

In this honeycomb method, high-speed mechanical winding is difficult because the coil is wound while suppressing the slippage of the wire 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, However, since a hook pin is inserted to prevent the conductor from slipping, there is a problem of inefficiency.

In addition to this honeycomb method, there is a method of diagonally winding a non-metallic bobbin, but it is difficult to wind the bobbin closely in an aligned manner, and the bobbin becomes thicker so that it can withstand the tension of the conductor, and the misalignment increases the gap. However, there are disadvantages in that inactive parts accumulate at both ends of the bobbin.

The present invention has been 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 a cylindrical coil for an electric motor that is closely wound in an aligned manner.

An embodiment of the method for manufacturing a cylindrical wire ring for an electric motor according to the present invention will be described below with reference to the drawings.

FIG. 1 ζ shows a jig for manufacturing a cylindrical wire ring for an electric motor according to the present invention.

This jig consists of a truncated conical winding frame 2 attached to a rotating shaft 1.
and a disc-shaped end plate 3 that is removable from the rotating shaft 1.

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 wound in close alignment around the truncated conical winding frame 2, as shown in FIG. A truncated conical wire body 5 is formed.

The truncated conical wire ring 5 which is aligned and closely wound is attached to the rotating shaft 1.
The disc-shaped end plate 3 is removed from the truncated cone-shaped winding frame 2.

As shown in FIG. 3, the truncated conical wire ring 5 wound in close alignment is embossed with concave and convex portions 6.7 for bending using a suitable jig (not shown).

The uneven portions 6° 7 for bending are alternately formed at an even number of locations over the entire circumference of the wire ring body 5, and the troughs and tops thereof are defined as bending lines.

The wire ring body 5 is divided into an even number of conductor bands 8.9 by the bending lines of the concave and convex portions 6 and 7 for bending.

In this embossed truncated conical wire ring 5, the conductor bands 8 and 9 are bent along the bending line, and the outer surfaces of the conductor bands 8 and 9 are in close contact with each other in the bending recess 6. In the bending convex portion 7, the inner surfaces of the conductor bands 8, 9 are brought into close contact with each other, and the conductor bands 8, 9 are extended along the virtual cylindrical surface 10 as shown in FIG. (This is shaped into a cylindrical element wire 11.

As shown in FIG. 4, a plurality of the cylindrical element wires 11 manufactured as described above are combined to form an armature for an electric motor.

In the cylindrical element wire 11 shown in FIGS. 4 and 5, the winding start and winding ends of the conducting wire 4 of the wire ring body 5 are used as leads for the armature.

As described above, according to the method for manufacturing cylindrical wire rings for electric motors of the present invention, cylindrical element wire wheels can be easily manufactured by simply bending the truncated conical wire wheels that are closely wound in alignment. ,
Moreover, since the completed cylindrical element wire is sufficiently flat with the conducting wires tightly arranged, it is possible to reduce the gap between the rotor and stator in an electric motor using this cylindrical element wire. It can be made sufficiently small, and it is possible to prevent accumulation of inactive parts around the armature.

[Brief explanation of drawings]

FIG. 1 is a side view showing a jig for manufacturing a cylindrical wire ring for an electric motor according to the present invention, and FIG. 2 is a truncated conical wire ring made from the jig shown in FIG. 1. FIG. 3 is a plan view showing the truncated conical wire ring shown in FIG. 2 in a deformed state, and FIG. A perspective view showing a cylindrical element wire formed by bending, and a fifth
The figure is a developed view showing the cylindrical element wire shown in FIG. 4. DESCRIPTION OF SYMBOLS 1...Rotating shaft, 2...Truncated conical winding frame, 3...Disc-shaped end plate, 4...Conducting wire, 5
・・・・・・Truncated conical wire ring body, 6.7・・・Irregularities for bending, 8, 9・・・Conductor band, 10...
...Virtual cylindrical surface, 11...Cylindrical wire ring.

Claims (1)

[Claims] 1 Form a truncated cone-shaped wire ring in which the conducting wire is closely wound, and then stamp it with alternating irregularities, and use the troughs and tops of the irregularities as bending lines to form a plurality of wire rings. The truncated conical wire ring is divided into conductor bands, and the truncated conical 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 truncated conical wire ring, respectively, and the conductor band is bent into a cylindrical surface. A method for producing a cylindrical wire for an electric motor, in which the outer shape of the wire is shaped into a cylindrical wire by extending the wire upward.