JP2679721B2 - Electric motor stator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stator of an electric motor, and more particularly to a winding process for the stator.

[0002]

2. Description of the Related Art Conventionally, a stator of an electric motor is an iron core in which a plurality of teeth 2 and grooves 3 are integrally punched inward from a sheet-shaped iron plate as shown in FIG. A method of laminating the wires and inserting a winding (magnet wire) into the groove is used. As shown in FIG. 4, the auxiliary winding 9 is wound first, and the main winding 8 is wound inside. There is. In the winding process of the stator, the pre-winding coil is wound around the winding frame by a predetermined number of windings by a winding machine, removed from the winding frame by a coil inserter and inserted into the groove portion 3 of the stator.
After inserting the winding, it is necessary to adjust the shape of the winding and thread the thread so that the winding does not come apart, and then to apply varnish for insulation and shape retention. It takes manpower and becomes a bottleneck in production.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and makes it possible to easily wind the winding of the stator and to shape the winding and thread the yarn. An object is to provide a stator that reduces manual work.

[0004]

In order to achieve the above object, a groove portion is formed between an outer yoke portion and a plurality of tooth portions protruding inward with the stator iron core in a joinable state. divided into the inner yoke portion, and the connecting toothing formed by coupling a plurality of teeth tip Aitonaru at predetermined intervals on the inner yoke portion, in the coupling teeth
An opening is formed at the opposing outer peripheral position to open a groove portion adjacent to each other with a predetermined gap , and after lamination, the inner winding is wound from the inner side across the connecting tooth portion, and the outer winding is applied to the opening portion. It was wound from the outside and joined to the outside yoke part.

[0005]

According to the above construction, the stator core is divided into the inner yoke portion and the outer yoke portion in a joinable state, and a plurality of teeth and grooves are formed inside the inner yoke portion, The same connection with the connecting tooth part that connects the tips of multiple adjacent tooth parts with an interval of
As the inner yoke portion does not come apart by providing an opening to Aitonaru groove on the outer peripheral position location at a predetermined gap and open <br/> mouth facing the teeth, the inside of the winding after the lamination The stator is formed by winding the wire from the inner side across the connecting tooth portion, winding the outer winding over the opening portion, and winding the wire from the outer side, and fittingly joining the outer winding portion to the outer yoke portion.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 shows the structure of a stator core 1 having 16 slots and 4 poles according to the present invention. FIG. 1 (a) shows tooth portions 2 and groove portions 3 of an inner yoke portion of the stator core 1, which are radially arranged toward the center. A tooth portion 2 and a groove portion 3 are formed, and a connecting tooth portion 4 is formed by connecting the tips of a plurality of tooth portions 2 adjacent to each other with a predetermined space inside.
Tonariru phase at a predetermined gap to the outer circumferential position location opposed to the coupling teeth 4
An opening 5 is formed by opening the groove 3 and is integrally connected by a connecting tooth 4. (B) is an outer yoke portion 6, which has an inner diameter into which the inner yoke portion is fitted, and is provided with a joint hole 7 in which a protrusion 10 is joined to an outer opening of the inner yoke portion.

FIG. 2 shows a state in which the winding is wound.
(A) is a state in which the winding is wound around the tooth portion 2 and the groove portion 3 of the inner yoke portion, the inner winding (main winding) 8 is a nozzle type winding machine, and the outer winding (auxiliary) (Winding) 9 can be directly wound by a flyer type winding machine, and by directly winding, winding can be formed without slack, and there is no need for shaping or threading the winding as in the conventional case. Manual work can be reduced. In this state, as shown in FIG. 2B, the stator can be formed by inserting and joining the outer yoke portion 6 and performing varnish treatment. FIG. 3 shows a state in which a winding is wound around the 8-slot 4-pole stator core 1 of the present invention.

[0008]

As described above, according to the present invention, the stator iron core is separated into the inner yoke portion and the outer yoke portion in a connectable state, and the stator winding is provided in the tooth portion and the groove portion of the inner yoke portion. By winding directly by the winding machine, it is possible to omit manual work such as shaping of the winding wire and threading, improving workability and automating this process.

[Brief description of the drawings]

FIG. 1 is a plan view showing a configuration of a stator core of the present invention.

FIG. 2 is a plan view showing a state in which a winding is applied to the stator core of the present invention.

FIG. 3 is a plan view showing a state in which winding is provided on a stator core in the case of 8 slots and 4 poles.

FIG. 4 is a plan view of a conventional stator core.

FIG. 5 is a plan view showing a state in which a winding is applied to a conventional stator core.

[Explanation of symbols]

 1 Stator core 2 Teeth 3 Groove 4 Connecting tooth 5 Opening 6 Outer yoke 7 Joint hole 8 Inner winding (main winding) 9 Outer winding (auxiliary winding) 10 Protrusion

Claims (3)

(57) [Claims] 1. A stator iron core is divided into an outer yoke portion, a plurality of tooth portions protruding inward, and an inner yoke portion in which grooves are formed between the tooth portions in a joinable state, and an inner yoke portion is formed. a coupling teeth formed by coupling a plurality of teeth tip Aitonaru at predetermined intervals in, the
Grooves that are adjacent to each other with a predetermined gap at the outer peripheral position facing the connecting teeth
An opening that opening is provided, and the inside of the winding after lamination was wound from the inside across the coupling teeth, the outer winding is wound around the outer toward the opening, joined to the outer yoke portion A stator for an electric motor, characterized in that 2. When the stator core has four poles of 16 slots, the tips of three adjacent tooth portions of the inner yoke portion are connected to each other, and
Except for one tooth tip, the next three adjacent tooth tips
4. The four connecting tooth portions are formed by connecting the connecting tooth portions with each other, and an opening portion that opens a groove portion adjacent to each other is formed at an outer peripheral position facing the connecting tooth portion. The motor stator described. 3. When the stator core has eight slots and four poles, two adjacent tooth tips of the inner yoke portion are connected to form four connecting tooth portions, and a groove portion facing the connecting tooth portions. The stator for an electric motor according to claim 1, wherein an opening is provided on the outer circumference.