JPH028541B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of winding a motor, in which a coil is wound around a yoke portion of a slot of an iron core to form an annular winding.

In a motor in which a coil is wound around a yoke portion of a slot in an iron core to form an annular winding, it is important to reverse the winding direction of the coil for each winding block of the same phase.

In order to achieve this object, the present invention extends the outer periphery of the core in the radial direction to form a protrusion that isolates the windings of each phase. This method was developed with the aim of tightly winding the coil by engaging the end of the winding wire with the protrusion and reversing it each time winding on a winding block of the same phase is completed.

The invention will be explained below based on one embodiment shown in the drawings.

FIG. 1 is a diagram showing a stator core (divided core) of a four-pole electric motor wound according to the present invention;
The figure is a diagram showing the winding state of each winding block of the same phase in an easy-to-understand manner. Moreover, FIG. 3 is a diagram easily showing the winding work on the yoke portion of each slot.

In the figure, 1 is the stator core divided into two parts, 2 is the slot, 3 is the yoke part of the slot 2, 4 is the tooth part, and 5 is the protrusion formed by extending radially outward of the iron core 1. , and this protrusion 5 is connected to the winding 6
The protrusion height is sufficient to isolate each phase.

An insulating layer is formed on the outer surface of the iron core 1 by applying a resin coating to the entire surface except for the inner peripheral surface of the tip of the toothed portion 5 by powder coating or dipping in an insulating paint tank.

Further, the winding 6 shown by dotted lines in FIGS. 1 and 2 is formed by winding a coil around the yoke portion 3 of the slot 2 on which an insulating layer is formed.

The coil winding terminal of a winding machine for winding a coil around the yoke part 3 of the slot 2 of the iron core 1 is provided on the inner peripheral part of the ring-shaped disc 7 shown in cross section in FIG. (not particularly shown), by rotating the disk 7 at high speed, the coil winding terminal is moved around the inner and outer peripheries of the yoke part 3 of the slot 2 at high speed to wind the coil, and at this winding speed. By synchronizing and swinging the iron core 1 around the point P at the opening of the slot 2, for example as shown by the dotted line in the figure, the coil can be brought into close contact with the yoke part 3 of the slot 2 evenly and evenly. It can be wrapped.

After the winding to slot 2 is completed, the winding to the other slot 2 is completed.
When moving the winding position, the core 1 is sequentially rotated in a fixed direction for each predetermined slot 2, so that the coil can be wound around the inner and outer peripheries of the other slots 2 to be wound next. The coil-wound terminal may be arranged so that the terminal rotates.

As shown in Fig. 2, the direction of rotation of the coil winding terminal is as shown in Fig. 2. After winding the coil 6a into the slots 2a and 2b constituting the winding block It is hooked onto the protrusion 5 and engaged, and then the winding position is set to the slot 2c constituting the winding block Y having the same phase as the winding block X.
By moving the coil 6a to the 2d side and reversing the rotation direction at this position, the winding end position and winding start position of the coil 6a are supported by the protrusion 5, so that the same phase winding can be carried out without winding unraveling etc. For each block, the winding 6 can be wound tightly and alternately in the forward and reverse directions.

Also, a protrusion 5 for isolating each winding 6 of each phase.
is formed, it is possible to tightly wind the windings 6 and at the same time secure a sufficient spatial distance between the adjacent windings 6 of different phases.

Furthermore, since the iron core 1 has an insulating layer formed by resin coating, there is no need for special insulation treatment for the protrusions 5 on the outer periphery of the iron core 1, and each protrusion 5 is integrally formed with the core plate of the iron core 1. Since it can be punched and formed, it can be manufactured in the same process as the conventional punching and laminating process for iron cores.

In addition, unlike conventional methods, a molded insulator that matches the core shape is not inserted, so there is no loss of efficiency due to floating gaps between the molded insulator and the core or overlapping parts of the insulators, and the resin coating is used. Therefore, it is possible to prevent the coil from being damaged especially when the iron core is oscillated around the point P at the opening of the slot 2 using a trowel which does not generate burrs or the like.

Then, the iron core 1 on which the winding 6 has been formed as described above is joined at the dividing plane into two pieces, and the winding 6 in the same phase is
The stator core of the electric motor is formed by interconnecting the two.

On the other hand, although this embodiment shows winding in the same phase on the yoke portion of the slot of the iron core, the present invention can be applied not only by itself but also by adding other processes as appropriate. Of course, it can be implemented by

As explained above, according to the present invention, a strong annular winding can be easily formed by reversing the direction of rotation of the coil winding terminal that rotates around the inner and outer peripheries of the slot for each winding block of the same phase. It is possible to obtain a motor winding method that allows the following.

[Brief explanation of drawings]

Fig. 1 is a diagram showing the iron core of a motor wound according to the present invention, Fig. 2 is a diagram clearly showing the winding state of each winding block of the same phase, and Fig. 3 is a diagram showing the winding of the yoke portion of each slot. It is a diagram showing the work in an easy-to-understand manner. 1... Iron core, 2... Slot, 3... Yoke part, 5... Protrusion, 6... Winding wire, X, Y... Winding block.

Claims (1)

[Claims] 1. A motor winding method in which a coil winding terminal is moved around the inner and outer peripheries of a slot in an iron core, a coil is wound around a yoke part of the slot, and the position of the wire to be wound is sequentially moved in a fixed direction for each predetermined slot. In this method, the outer periphery of the iron core is extended radially outward to form a protrusion that isolates the windings of each phase, and this iron core is coated with resin to form an insulating layer, and the circumferential movement of the coil-wound terminal is A method of winding a motor, characterized in that each time winding on a winding block having the same phase is completed, the end of the winding is engaged with the protrusion and reversed.