JPH0442898B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of winding a motor stator in which a so-called toroidal winding is performed, in which a winding is wound in each slot of an annular stator so as to be orthogonal to the yoke. It is.

Toroidal winding machines are generally known as a method for winding the stator in each slot of the annular stator so as to be perpendicular to the yoke without dividing the stator. The wire method has disadvantages such as the inability to increase the winding speed and the time it takes to attach and remove the stator core, as well as the need to store wire in the winding ring in advance, resulting in poor production efficiency. . As a means of solving this problem of poor production efficiency, it is conceivable to divide the stator core into parts and wind the windings as shown in Figure 1, and then to connect the divided stator cores by some means. ,in this case,
In addition to joining the divided cores, it takes a lot of effort to connect the coils that occur depending on the core division, and especially when there are several types of speed adjustment coils such as in a fan motor, it is difficult to connect the cores. The connection of the coils is a bigger bottleneck in processing than the coupling.

The present invention solves the above conventional problems,
It is an object of the present invention to provide a highly productive motor stator winding method that reduces the coil connection work that occurs when the core is divided.

In order to achieve this object, the motor stator winding method of the present invention involves a method of winding a stator core divided into two parts of a toroidal winding induction motor, such that these divided cores overlap each other with a certain space in between. After fixing one of the divided planes as shown in FIG.
Start winding from the slot farthest from the winding flyer, wind at least one turn less than the number of turns that should be wound for each slot, and after winding has been completed to the specified slot, turn back the amount that is short of the specified number of turns. The structure is such that the wire is wound, and after passing to the second stator, the wire is folded again in the same way as the first stator.

With this configuration, the first stator core and the second stator core of the two-part core can be wound in continuous coils without cutting them, eliminating the need for the conventional coil connection work, and The winding method allows the coil to be wound around the stator core without the end clamp portion of the coil interfering with the rotation of the flyer.

Embodiments of the present invention will be described below with reference to FIGS. 2 to 4. In FIG. 2, 1 is a divided first stator core, 2 is a divided second stator core, 3 is a chuck holder that holds the stator cores 1 and 2 in the winding, and 4 is a chuck holder. A chuck magnet 5 is embedded in the chuck holder 3, and 5 is a flyer for winding the electric wire 6 into the slots of the stator cores 1 and 2. Note that the divided stator core 1,
2 is attached to a chuck holder 3 with a first stator 1 and a second stator 2 as a set.

In such a configuration, the state of the winding will be described. The tip of the electric wire 6 coming out of the flyer 5 is clamped at an appropriate position, and winding is started from the slot 1a of the first stator 1 which is farther from the flyer 5. At this time, by appropriately selecting the clamping position of the tip of the electric wire 6, the electric wire 6a coming out of the slot 1a is out of the orbit of the fryer 5, and does not interfere with the rotation of the fryer 5. In this state, the wire 6 is wound around the slot 1a, and the number of turns is less than the specified number of turns, which is less than the specified number of turns.
(Generally, from one turn to several turns), an indexing device (not shown) linked to the chuck holder 3 indexes the stator core 1 corresponding to one slot, and connects the slot 1b to the slot 1a.
Winding is performed in the same manner as above, and the slot 1d is
Continue winding until the end. Thereafter, the winding is reversed from the slot 1d to the slot 1a by winding the wire that is short of the specified number of turns, thereby ensuring the specified number of turns. Next, as shown in FIG. 3, the flyer 5 is raised or the chuck holder 3 is lowered, and the
Securing the crossover wire 6b to the stator core 2, and in the same manner as explained for the first stator core 1, wind the wire from the slot 2a to the slot 2d with at least one turn less than the specified number of turns. Similarly, from slot 2d to slot 2a, winding is performed by folding back the winding that is short of the specified number of turns, and winding is performed on the second stator 2.
Secure the specified number of turns. After that, a coil terminal processing device (not shown) removes the wire 6c at the end of the winding.
Cut and process.

With the above-described operation, winding of the main coil in, for example, a single-phase induction motor is completed.

Regarding the winding of the auxiliary coil, if the winding is started from the slot 1e as shown in Fig. 4, the first stator core 1 and the second
It is possible to wind the wire continuously without cutting the crossover wire with the stator core 2. Generally, in fan motors, etc., several types of coils are often wound around the auxiliary coil for speed adjustment, but as described in the explanation of Figures 2 to 4 above, the same winding is repeated in a separate process. By repeating the wire method, it is possible to wind the coil so as to overlap the coil wound the first time, and further, as described above, the first stator core 1 and the second stator core 1 can be wound. Since the crossover wire 6b that crosses 2 is crossed between the slots that are farther from the flyer 5, there is no risk of accidentally winding or cutting the first coil, which is common when overlapping winding, resulting in extremely efficient winding. It can be a method.

After continuously winding the first stator core 1 and the second stator core 2 without cutting them, as shown in FIG. The stator is completed by connecting the child core 1 and the second stator core 2 by some means.

As described above, when winding a coil in each slot of the stator core, start winding from the slot farthest from the flyer, wind less than the specified number of turns, secure the specified number of turns with folded winding, and then wind the coil. By making the start of the turn and the end of the turn the same,
The coil at the beginning of winding, the crossover wire from the first stator core to the second stator core, and the coil at the end of winding are placed outside the orbit of the fryer, thereby creating an effective continuous winding of the split stator core. Make it seem possible.

In the above embodiments, a two-pole motor, which is a single-phase induction motor, has been described, but it goes without saying that a four-pole motor can also be wound using the same concept.

As described above, according to the present invention, the stator core 1 can be cut without cutting the crossover wires of the divided stator core.
This winding method is extremely advantageous in reducing the number of man-hours required for winding the divided stators, since it is possible to wind the same number of wires as one machine, and there is no need to connect crossover wires after the stator cores are combined.

In particular, the effect increases dramatically in a stator such as a fan motor that has several types of speed adjustment coils.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the state after the winding is completed when the conventional divided stator core is wound individually, and Fig. 2 is a perspective view showing the state at the beginning of winding of the main coil of the present invention. , Fig. 3 is a perspective view showing the continuous winding state of the main coil, Fig. 4 is a perspective view showing the starting state of winding of the auxiliary coil, and Fig. 5 shows tap winding when the auxiliary coil has several types of speed adjustment coils. FIG. 6 is a perspective view showing the state of the wires, and FIG. 6 is a perspective view showing the completed stator according to the present invention. DESCRIPTION OF SYMBOLS 1...First stator core, 2...Second stator core, 3...Chuck holder, 5...Flyer, 6...Electric wire, 6a...Start of winding of electric wire, 6b...
...Cover wire, 6c... End of winding of electric wire.

Claims (1)

[Claims] 1. After fixing one of the divided surfaces of each core to a chuck holder so that the divided stator core of the toroidal wound induction motor is overlapped with each other with a certain space between them, When winding a coil in each slot of the two-part stator core so as to be orthogonal to the yoke, the winding of the first stator starts from the slot farthest from the winding flyer. , wind at least one turn less than the number of turns that should be wound for each slot, and after winding has been completed up to the predetermined slot, the portion short of the specified number of turns is folded back, and the first stator core is wound. After moving the position of the flyer from the starting slot to the slot far from the flyer of the second stator core via the crossover wire without cutting the coil, turn the folded winding in the same way as for the first stator. By making the winding start position and the winding end position of the second stator core the same slot, the first stator core and the second stator core of the two-segment core are connected to a continuous coil. A motor stator winding method in which the motor stator is wound with