JP2003116239A - Stator of inner rotor-type motor and manufacturing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability in forming series windings on a two-pole and two-phase motor and the quality of the windings. SOLUTION: A stator core is split into eight pieces: four split core bodies a2 and four split core bodies b sandwiched between the split core bodies a. In winding operations, the four split core bodies a2 are held in an annular shape as it is, and further wires are continuously wound on a phase-by-phase basis. Thereafter, the split core bodies b are fit into the split core bodies a and they are integrated with each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an internal rotation device having a structure in which a stator iron core is divided into a plurality of divided iron cores, a winding is directly wound around the divided iron cores, and the divided iron cores are annularly integrated. Type motor stator.

[0002]

2. Description of the Related Art In recent years, a stator in which windings are applied to a plurality of divided iron core bodies and the divided iron core bodies are arranged in an annular shape, and a method for manufacturing the stator have become popular.

Conventionally, as an example of the structure of this type of stator, the one described in Japanese Patent Laid-Open No. 2000-358346 has been known. The configuration will be described below with reference to FIGS.
Will be described with reference to.

As shown in FIG. 11, insulating materials 202, 2
The number of poles of the split iron core body 201 insulated by 03 is separately held linearly, and the A-phase winding 204 is continuously connected to the poles by a crossover wire 205 and wound. Also, B-phase winding 2
A number of poles of No. 06 were continuously connected by a crossover wire 207 and wound, and then these were united into a ring to form a stator.

Further, as shown in FIG. 12, a split iron core body 201 similarly similarly insulated by insulating materials 202 and 203 is held in an annular shape by several poles, and the A-phase winding 204 is attached to this.
A number of poles are continuously connected and wound with a crossover wire 205, and a few B-phase windings 206 are continuously connected and wound with a crossover wire 207, and then these are united into an annular shape. Was used as a stator.

[0006]

In such a conventional stator structure, it is difficult to manage the crossover wire 205, and the split iron core body 201 in which several poles are continuously wound is separately combined. There has been a problem that it takes a lot of time and effort to combine them in a ring shape.

An object of the present invention is to solve the above problems, and an object thereof is to provide a stator of an inversion type electric motor in which the crossover can be easily managed and the split iron core body can be assembled with little labor.

[0008]

In a stator of an adder type motor according to the present invention, a stator iron core having four slots and four tooth portions, an A-phase winding having two poles and a B-pole, respectively. In a stator having a phase winding, the stator iron core has four split iron cores a each having a tooth portion and a yoke portion integrated, and the split iron cores of the yoke portions sandwiched by the split iron cores a. The body b is divided into four pieces, that is, a total of eight pieces, and the two-pole A-phase windings and the two-pole B-phase windings are alternately alternated by concentrated winding while being fixed in an annular shape to the four tooth portions through an insulator. After arranging the crossovers continuously so as to be arranged and winding them in series, the four split iron core bodies b are mounted and fixed in the gaps between the split iron core bodies a and the split iron core bodies a, respectively, and integrated into an annular shape. This is a configuration that is realized by converting.

According to the present invention, it is possible to provide a stator of an adder type motor in which it is easy to manage the crossover wires of the A-phase winding and the B-phase winding and to assemble the split iron core a.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is a stator iron core comprising four slots and four tooth portions, and two poles each of an A phase winding and a B phase winding. In the stator having, the stator iron core includes four divided iron core bodies a each having a tooth portion and a yoke portion integrally formed, and a divided iron core body b of the yoke portion sandwiched between the divided iron core bodies a. It is divided into a total of eight, and the two poles of the A-phase winding and the two-poles of the B-phase winding are alternately arranged by concentrated winding while being fixed to the four tooth portions in an annular shape via an insulator. After each of which the crossover wire is arranged continuously and wound directly, the four divided iron core bodies b are mounted and fixed in the gaps between the divided iron core bodies a and the divided iron core bodies a, respectively, and integrated into an annular shape. With this configuration, it is possible to easily manage the crossover and to easily assemble the split iron core body.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
This will be described with reference to FIG.

(Embodiment 1) As shown in FIGS. 1 to 8, a stator core 1 having four slots 15 is attached to a tooth portion 2.
And the yoke portion 3-1 are integrated into four pieces of the divided iron core body a4 and the yoke portion 3-2 of the four divided iron core bodies b5, and the divided iron core body a2 is a rotor. The teeth 3-1 are arranged substantially radially on the outer periphery of the hole 6 and are arranged so that the intervals between them are the same as or equal to those when the stator 11 is completed. Then, the A-phase winding 7 is connected by a crossover 8a and continuously wound directly for two poles.
4, the B-phase winding 9 is connected by the crossover 8b by concentrated winding after insulation treatment and continuously wound for two poles, so that two A-phase winding winding bodies 10 and this and the After forming two B-phase winding winding bodies 11 at positions separated by 90 degrees at the corners, the split iron core bodies b5 divided by the yoke portion 3 are interleaved and alternately arranged in an annular shape to form the stator 11. Constitute.

Further, the manufacturing method is carried out by simultaneously carrying out the winding work of the 2-pole A-phase winding 7 and the winding work of the 2-pole B-phase winding 9.

Further, the crossover 8a of the A-phase winding 7 is provided on the inner diameter side of the B-phase winding insulator 12b, and the upper extending portion 12b-1 is provided.
Is held by a holding mechanism 13b-1 provided on the outer peripheral surface side or the upper surface, and the crossover 8b of the B-phase winding 9 is the outer peripheral surface of the lower extension portion provided on the inner diameter side of the A-phase winding insulator 12a. It is configured to be held by a holding mechanism 13a-1 provided on the side or the lower surface.

The crossover wire 8a of the A-phase winding 7 is arranged on the load side of the stator core 1 and the crossover wire 8b of the B-phase winding 9 is arranged on the anti-load side, or The crossover wire 8a of the B-phase winding 9 is arranged on the side opposite to the load side of the stator iron core 1
Is arranged on the load side.

As described above, according to the stator of the adder type motor and the method of manufacturing the same of the first embodiment of the present invention, the four split iron core bodies a2 are made to be the same as or equivalent to when the stator 11 is completed. The A-phase winding 7 or the B-phase winding 9 is directly wound by a winding machine (not shown) while being placed in the position A, and the A-phase winding 7 and the B-phase winding 9 are crossover wires 8a or 8b. Since they are connected and wound directly, the crossovers 8a, 8
Since it is not necessary to move some of the split iron core bodies a4 without adjusting the length of b, the management of the crossovers is easy and the stator 11 can be assembled with little labor.

Also, for four divided iron cores a4, A
Since the winding work of the phase winding 7 and the winding work of the B-phase winding 9 are carried out at the same time, it becomes possible to carry out the winding work of the direct winding in an extremely short time.

Further, since the crossover wire 8a of the A-phase winding 7 and the crossover wire 8b of the B-phase winding are held at positions distant from the respective windings, the film damage of the crossover wires 8a and 8b is caused. It is possible to reduce the possibility of layer failure that occurs.

Further, since the crossover wire 8a of the A-phase winding 7 and the crossover wire 8b of the B-phase winding 9 are arranged on the opposite sides of the load side and the anti-load side with the stator core 1 interposed, respectively. It is possible to improve the winding quality by reducing the possibility of contact with the winding start line (not shown), winding end (not shown), etc. of the windings 8a, 8b and each phase.

(Embodiment 2) FIG. 1 and FIG. 2, FIG.
As shown in FIG. 9 and FIG. 10, the A-phase winding 7 or the B-phase winding 9 is directly wound, and the split iron core body b5 is outside the four split iron core bodies a4 arranged in an annular shape. The divided iron cores a4 and b5 are attached from the radial direction, and the divided iron cores b have a trapezoidal shape or a convex shape which is tapered toward the inner diameter in order to facilitate the attachment. The configuration will be combined.

Further, the four split iron core bodies a4 arranged annularly are held at the regular inner and outer diameters of the motor stator.

In addition, the A-phase winding 7 or the B-phase winding 9 is wound directly around the four iron core bodies a4 arranged annularly, and the iron core body b5 is located above the iron core bodies a4 in the axial direction of the electric motor. It is configured to be mounted from the bottom or from the axial lower side.

As described above, according to the stator of the adder type motor according to the second embodiment of the present invention, the split iron core body b5 faces in the inner diameter direction of the stator iron core 1 and has a tapered trapezoidal shape or a convex shape. The divided iron core b5 is formed by combining these shapes.
Can be mounted between the split iron core bodies a4 around which the windings are wound by moving from the outer diameter direction to the inner diameter direction, and the stator 11 can be easily assembled.

Further, the split iron core body a4 is held exactly the same as the regular inner and outer diameter dimensions when the stator is completed, and there is no need to move it from winding winding to mounting of the split iron core body b5. The possibility of damage such as is eliminated, and the manufacturing method can be simplified.

Further, the configuration in which the split iron core body b5 is mounted between the four split iron core bodies a4 from above or below in the axial direction of the electric motor allows the shape of the split surface to be freely selected and the creepage distance of the split surface to be increased. By enlarging, the contact area between the iron core divided body a4 and the iron core divided body b5 can be increased, whereby the magnetic resistance of the divided surface can be stabilized.

[0026]

As is apparent from the above embodiments,
According to the present invention, in a stator having a stator iron core consisting of four slots and four tooth portions, and an A-phase winding and a B-phase winding each having two poles, the stator iron core is provided with tooth portions. And the yoke portion are integrated into four divided iron core bodies a, and the divided iron core body b of the yoke portion sandwiched by the divided iron core bodies a is divided into four to make a total of eight teeth portions 4 Continuously wound by arranging continuously crossovers so that two-pole A-phase windings and two-pole B-phase windings are alternately arranged by concentrated winding while being fixed in a ring shape with an insulator interposed therebetween. After that, four divided iron cores b are mounted and fixed in the gaps between the divided iron cores a and the divided iron cores a, respectively, and integrated into an annular shape. Therefore, when the assembly of the stator is completed, Since it is not necessary to move some of the split iron cores without adjusting the length, it is easy to manage the crossovers and the stator can be assembled with less labor. It is possible to provide a child.

Further, since the manufacturing method is such that the winding work of the two-pole A-phase winding and the winding work of the two-pole B-phase winding are simultaneously performed, the direct winding of the winding is performed in an extremely short time. It becomes possible to carry out the mounting work.

Further, the crossover wire of the A-phase winding is held by a holding mechanism provided on the outer peripheral surface side or the upper surface of the upper extending portion provided on the inner diameter side of the B-phase winding insulator, Crossover is A
Since the structure is held by the holding mechanism that is provided on the outer peripheral surface side or the lower surface of the lower track portion that is provided on the inner diameter side of the phase winding insulator, it is possible to have a rare defect due to damage to the crossover wire coating. It is possible to reduce the property.

The crossover wire of the A-phase winding may be arranged on the load side of the stator core and the crossover wire of the B-phase winding may be arranged on the non-load side, or the crossover wire of the A-phase winding may be arranged as described above. Since the configuration is such that the crossover wire of the B-phase winding is placed on the load side of the stator core and the crossover wire of the B-phase winding is placed on the load side, there is a possibility of contact with the crossover wire and the winding start and end of each phase winding It is possible to reduce the winding noise and improve the winding quality.

Further, the A-phase winding or the B-phase winding is directly wound, and the split iron core body b is attached from the outer diameter direction to the four split iron core bodies a arranged in an annular shape. The split iron core a
Since the divided iron core body b has a trapezoidal shape that is tapered in the inner diameter direction or a convex shape or a combination thereof, the divided iron core body b has a divided surface for easy mounting. The core b can be mounted between the split iron cores a around which the winding is wound by moving the core from the outer diameter direction to the inner diameter direction, and the stator can be easily assembled.

Further, since the four split iron core bodies a arranged in an annular shape are held at the regular inner and outer diameters of the motor stator, the winding iron winding body is moved to the installation of the split iron core body b. There is no need to do so, the possibility of damage such as crossovers can be eliminated, and the manufacturing method can be simplified.

Further, the A-phase winding or the B-phase winding is directly wound, and the four divided iron cores a are arranged annularly, and the divided iron core b is arranged from above in the axial direction of the electric motor. Alternatively, since it is mounted from below in the axial direction, the shape of the split surface can be freely selected and the creepage distance of the split surface can be increased to increase the contact area between the split iron core a and the split iron core b. However, this makes it possible to stabilize the magnetic resistance of the divided surfaces.

[Brief description of drawings]

FIG. 1 is a perspective view showing an arrangement of a stator iron core of an adder-type electric motor according to a first embodiment of the present invention when four winding iron cores a of a stator iron core are wound.

FIG. 2 is a front view showing a stator iron core of the inversion motor.

FIG. 3 is a perspective view showing four split iron core plates b of a stator iron core of the inversion motor.

FIG. 4 is a perspective view showing a split iron core plate a of a stator iron core of the inversion motor.

FIG. 5 is a perspective view showing four split iron core plates b of a stator iron core of the inversion motor.

FIG. 6 is a partial perspective view showing a state in which a winding is wound around a split iron core body a of the inversion motor.

FIG. 7 is a front view showing a state in which a winding is wound around a split iron core body a of the inversion motor.

FIG. 8 is a front view showing a stator of the inversion motor.

FIG. 9 is a front view showing a stator core in which a split surface of a split iron core body a and a split iron core body b of an adder type electric motor according to a second embodiment of the present invention is convex.

FIG. 10 is a perspective view showing a split iron core body b of the inversion motor.

FIG. 11 is a front view showing a state in which the split iron core bodies a of the conventional adder-type electric motor are linearly arranged to wind a winding wire.

FIG. 12 is a front view showing a state in which split iron core bodies a of a conventional inversion type electric motor are arranged in a ring shape to wind windings.

[Explanation of symbols]

1 Stator iron core 2 teeth 3-1 3-2 Yoke part 4 split iron core a 5 split iron core b 6 rotor holes 7 Phase A winding 8a, 8b Crossover 9 B-phase winding 10 A phase winding winding body 11 B-phase winding winding body 12a A phase winding insulation 12b B phase winding insulation 13a-1, 13b-1 holding mechanism 15 slots

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H02K 15/04 H02K 15/04 Z F term (reference) 5H002 AA07 AB01 AE08 5H603 AA09 BB01 CA01 CA05 CB02 CD21 5H604 AA08 BB01 CC01 CC05 CC15 QA03 QB13 5H615 AA01 BB01 BB14 BB16 PP01 PP07 PP08 PP13 QQ19

Claims (7)

[Claims] 1. A stator having a stator iron core consisting of four slots and four tooth portions, and an A-phase winding and a B-phase winding each having two poles, wherein the stator iron core has tooth portions. And the yoke portion are integrated into four divided iron core bodies a, and the divided iron core body b of the yoke portion sandwiched by the divided iron core bodies a is divided into four to make a total of eight teeth portions 4 Continuously wound by arranging continuously crossovers so that two-pole A-phase windings and two-pole B-phase windings are alternately arranged by concentrated winding while being fixed in a ring shape with an insulator interposed therebetween. After that, four stator cores b are mounted and fixed in the gaps between the carrier cores a and the carrier cores a, respectively, and integrated into an annular shape, which is a stator of an inversion motor. 2. The method for manufacturing a stator of an inversion type electric motor according to claim 1, wherein the winding work of the 2-pole A-phase winding and the winding work of the 2-pole B-phase winding are performed simultaneously. 3. The crossover wire of the A-phase winding is held by a holding mechanism provided on the outer peripheral surface side or the upper surface of the upper extending portion provided on the inner diameter side of the B-phase winding insulator, The stator of an adder-type electric motor according to claim 1, wherein the crossover wire is held by a holding mechanism provided on an outer peripheral surface side or a lower surface of a lower extending portion provided on an inner diameter side of the A-phase winding insulator. . 4. The crossover wire of the A-phase winding is arranged on the load side of the stator core and the crossover wire of the B-phase winding is arranged on the anti-load side, or the crossover wire of the A-phase winding is The stator of an adder-type motor according to claim 1 or 3, wherein the stator core is arranged on the opposite side of the load and the crossover wire of the B-phase winding is arranged on the side of the load. 5. An A-phase winding or a B-phase winding is directly wound, and a split iron core body b is attached from an outer diameter direction to four split iron core bodies a arranged in an annular shape. The divided iron core bodies a and b are divided into divided surfaces so that the divided iron core bodies b have a trapezoidal shape that is tapered in the inner diameter direction, a convex shape, or a combination thereof. The stator of the adder type electric motor according to claim 1 or 4. 6. The stator of an inversion type electric motor according to claim 5, wherein the four split iron core bodies a arranged in an annular shape are held at the regular inner and outer diameters of the electric motor stator. 7. An A-phase winding or a B-phase winding is directly wound and four iron cores a are annularly arranged, and one iron core b is attached from above in the axial direction of the electric motor. Alternatively, the stator of the adder-type electric motor according to claim 1 or 4, wherein the stator is mounted from below in the axial direction.