JPH0452702B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a motor stator in which a so-called toroidal winding is applied, in which electric wire is wound in each slot of an annular stator core so as to be orthogonal to the yoke. This relates to a winding method.

Conventional structure and its problems When winding wires in each slot of an annular stator core perpendicular to the yoke, a toroidal winding machine is generally used as a method for winding the stator core without dividing it. However, this winding method has disadvantages such as not being able to increase the winding speed and requiring time to install and remove the stator core, as well as requiring the wire to be stored in the winding ring in advance. Production efficiency was poor. One possible solution to this problem of poor production efficiency is to divide the stator core into multiple parts, wind the electric wires around them, and then connect the divided stator cores by some means. When winding a wire in the slot of a child core, it is very difficult to wind the wire because the opening of the slot is very narrow. In addition, in order to wind the electric wire perpendicularly to the yoke in each slot of the stator core of a motor that is divided into multiple parts, it is necessary to wind the wire using a so-called wire guide that covers the teeth extending in a spherical shape. There are two possible methods: one is to wind the wire guide 3, and the other is to wind it directly into the slot without using a wire guide. In the former case, as shown in Fig. 1, the structure for attaching the wire guide 3, especially the The winding tool, so-called wire guide 3a that covers the spherically extending teeth 1a of the stator core 1 provided on the flyer 4 side, falls within the locus of the flyer 4, so it must be attached to the stator core 1 or It is necessary to provide a guide mechanism that is relatively fixed from the center of rotation of 4, and in either case, the mechanism has the disadvantage of becoming very complicated. In addition, as shown in Fig. 2, the latter does not require the wire guide 3 like the former, so it is easy to attach and remove the stator core 1 from the winding machine. There is a risk that the electric wire 5 may come into contact with the side surface of the spherically extending tooth portion 1a of the child core 1, and the electric wire 5 may be damaged or cut. In addition, in the case of an induction motor, each slot 1b must be wound with tens to hundreds of turns, and in order to wind the electric wire 5 uniformly, the stator core 1 and the flyer 4 must be moved relative to each other. In the former case, it is possible to have a wide swing range and to achieve a uniform winding state, but in the latter case, as shown in Fig. 2, from a geometrical point of view, It is only possible to swing the stator core 1 in the circumferential direction around the center point A of the opening of the slot 1b, which not only makes it impossible to wind the wire in a completely uniform state, but also causes the side surfaces of the teeth to This increases the risk of the electric wire 5 coming into contact with the
This is a method that is difficult to adopt in terms of quality. In addition, the first
In Figures 1 and 2, 1c is a yoke, 2 is a chuck holder that holds the stator core 1 in the winding, and 2 is a yoke.
A is a magnet embedded in the chuck holder 2.

OBJECTS OF THE INVENTION The present invention has been made in view of the above-mentioned conventional drawbacks, and it is an object of the present invention to provide a winding method that can easily and uniformly wind a wire.

Composition of the Invention The present invention provides a wire guide on the side opposite to the fryer that touches the inner diameter of the tip of the tooth portion extending centripetally from the yoke portion of the stator core, and a wire outlet of the fryer for winding the wire around the yoke portion. is shifted toward the wire guide from the extension line connecting the bottom corner of the half-open slot on the side opposite to the wire guide and the side surface of the tooth tip opening on the side opposite to the wire guide, and the wire guide and stator core are fixed. At the same time, the flyer is rotated and the wire is wound perpendicularly to the yoke part of the slot. The winding method uses a guide, rotational oscillation, and a simple mechanism in which the index center for sequentially shifting the slot position can be performed at a single point, thereby achieving a uniform and high space factor.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to FIGS. 3, 4, and 5. In the figure, 1 is a divided stator core, 2 is a chuck holder that holds the stator core in its windings, 2a is a magnet embedded in the chuck holder 2, and 3 is a wire for guiding the electric wire 5. A guide 4 is a flyer for winding the electric wire 5 around the slot 1b of the stator core 1.

In Fig. 3, the wire outlet 4a of the flyer 4 is shifted toward the wire guide from an extension line 6 connecting the bottom corner 1d of the slot on the side opposite to the wire guide and the side surface of the spherically extending tooth 1a. It is set in position. In such a configuration,
To explain the state of the winding, when the tip of the electric wire 5 coming out of the fryer 4 is clamped at an appropriate position (not shown) and the fryer 4 is rotated, the electric wire 5 is guided by the wire guide 3 and ends up in the tooth section. enters the slot 1b without contacting the side surface of 1a,
An electric wire 5 is wound around the yoke portion 1c of the stator core 1. Next, with the stator core 1 and the wire guide 3 fixed relative to each other, as the stator core 1 is swung circumferentially in the direction of arrow A around the center O of the stator core 1, as shown in FIG. As shown in FIG. 5, the electric wire 5 slides into the slot 1b while being guided by the wire guide 3. Here, when the rotational oscillation reaches the flyer side end as shown in FIG. 4, the flyer 4 is already at the axial extension 5a of the slot 1b of the stator core 1, so the electric wire 5 is It is in a pulled state between the yoke part 1c and the flyer 4, and without being restrained by the wire guide 3, it is uniformly aligned with the yoke part 1c with a width corresponding to the swing, and is almost aligned. It can be rolled. As mentioned above, by repeating rotation and oscillation in sequence,
The electric wire 5 is filled into the slot 1b, and it has been confirmed through experiments that it can be wound almost uniformly within the slot 1b. This is done by attaching the wire guides 3 and 3a to the teeth 1a on both sides of the slot 1b of the stator core 1 shown in FIG. It is no different from the state.

By the way, as shown in Figures 6 and 7, the outlet 4a of the electric wire 5 of the fryer 4 is aligned with the center O of the stator core 1.
When set to 5c on the extension line of
The stator core 1 is located within the locus 5b connecting the outlet 4a of the electric wire 5 of the fryer 4 and the bottom corner 1d of the slot.
Since the toothed portion 1a of the stator core 1 is inserted, the electric wire 5 cannot be wound, and the swinging range is limited to the range θ ₁ where it does not come into contact with the side surface of the toothed portion 1a of the stator core 1, as shown in FIG. Compared to the swing range θ ₂ in the method according to the present invention as shown in FIG. 9, it is not possible to cover a large swing range. For this reason, the filling of the electric wire 5 in the slot 1b has a strong tendency to be approximately triangular, and in extreme cases, it is not possible to wind the wire uniformly as shown in Fig. 4, and the wire 5 may be crooked or even filled. The electric wire 5 to be removed protrudes from the opening of the slot 1b. The wire guide 3 is for safely and reliably sliding the electric wire 5 into the slot 1b, and uniform winding is achieved by rotating the electric wire 5 around the center O of the stator core 1.
Focusing on the fact that this is due to the swinging in the circumferential direction at both corners of the slot bottom, the electric wire outlet 4a of the flyer 4 is connected to the slot bottom corner 1d on the side opposite to the wire guide and the tooth tip. By setting the stator core 1 and the wire guide 3 at a position shifted toward the wire guide side from the extension line connecting the side surfaces, and simultaneously swinging the stator core 1 and the wire guide 3 in the circumferential direction, the electric wire 5 is wound around the flyer 4. This made uniform winding possible.

In the above embodiments, the shape of the spherically extending tooth portion 1a of the stator core 1 is T-shaped, but even if the tooth portion 1a is L-shaped, the same effect can be obtained. Needless to say, there will be.

Effects of the Invention As described above, according to the present invention, a motor stator manufactured using a winding method perpendicular to the yoke can be uniformly manufactured by using an extremely simple wire guide structure and a swinging mechanism. Winding is possible, the structure of the winding machine is simple, and an inexpensive winding machine can be provided.

[Brief explanation of the drawing]

Figure 1 is a front view of winding a conventional stator core using a wire guide, Figure 2 is a front view of a conventional stator core winding without a wire guide, and Figure 3 , FIG. 4 is a front view showing the winding state of the present invention, FIG. 5 is a plan view showing the winding state of the present invention, and FIGS. 6 and 7 show the wire outlet of the fryer connected to the stator core. FIG. 8 is an explanatory diagram showing the swing range when winding the wire in FIGS. 6 and 7, and FIG. 9 is a plan view showing the winding state when the wire is set on the center extension. It is an explanatory view showing a movement range. 1a...teeth, 1b...slot, 1c...yoke, 1d...slot bottom corner, 1...stator core, 2...chuck holder, 3...wire guide, 4...flyer , 4a... Electric wire outlet, 5... Electric wire.

Claims (1)

[Claims] 1. A stator core divided into a plurality of pieces, a winding flyer for winding an electric wire perpendicularly to the yoke part for each slot of the stator core, and teeth extending centripetally in the stator core. and a wire guide located on the opposite side of the flyer and in contact with the inner diameter of the tip of the tooth, and after fixing the wire guide to the inner diameter surface of the tip of the tooth on the opposite side of the fryer of the half-open slot where the winding is applied, When simultaneously rotating and swinging the child core and the wire guide around the inner diameter center of the stator core, and rotating the flyer to wind the wire perpendicularly to the yoke of the slot, The discharge port is set at a position shifted toward the wire guide side from an extension line connecting the bottom corner of the half-open slot on the side opposite to the wire guide and the side surface of the half-opening at the tip of the teeth on the side opposite to the wire guide. A method of winding a motor stator characterized by: