JP2001238378A - Stator for inner rotor motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem of deterioration of wiring quality caused by the interference of a yoke with the series coil winding work when dividing the stator core into four sections with the yoke. SOLUTION: The stator core is divided into eight sections consisting of four sections of divided cores a2, in which a tooth 5 and the yoke are integrated before coil winding, and four sections of divided cores b3 of the yoke part 10 clamped against the divided core body a2, and is integrated into a combined annular body. These eight sections are assembled in a ring after coil winding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an internal rotation type electric motor in which a stator iron core is divided into a plurality of parts, and windings are wound in series, and then the divided stator iron cores are integrated into a ring. Regarding the stator.

[0002]

2. Description of the Related Art In recent years, a method has been generalized in which a stator is manufactured by directly winding a winding on a divided iron core body divided into the same number as the number of teeth, and then integrating the divided iron core bodies. In order to reduce the iron core material and the weight of the copper wire, the stator core is limited to eight or more teeth.

Conventionally, as an example of the configuration of this type of stator, one described in Japanese Patent Application Laid-Open No. 9-46979 has been known. Hereinafter, the configuration will be described with reference to FIGS.

[0004] As shown in FIGS. 11 and 12, after insulation treatment is performed on the divided tooth portions 201 with insulating materials 202 and 203, a relay pin 205 serving as a winding start portion and a winding end portion of a winding 204 is provided. After winding the windings 204, these are combined into a ring to form a stator.

[0005] As shown in FIGS. 13, 14, and 15, a stator iron core having four slots 301 is similarly divided by a yoke part 303 into the same number as the number of teeth 302. ,
The winding 305 is wound by the winding machine 307 via the insulating material 304. However, since the yoke portion 303 extends in the circumferential direction with respect to the tooth portion 302 and is long in an arc shape, the winding operation of the winding 305 is performed. , Measures such as mounting a special winding guide were required.

[0006]

In such a conventional stator configuration, the former configuration is applied to the latter as it is and the winding 305 is wound on the teeth 302 of the divided iron core body 306.
When winding the wire, it is necessary to take measures such as mounting the winding guides a308 and b309 because the yoke portion 303 is long in an arc shape. There is a problem that it is difficult to ensure winding quality because it is wound around the tooth portion 302 while sliding on the surface of the guide guide b309.

The present invention solves the above-mentioned problems, and the winding can be wound without attaching a special winding guide to the stator iron core, and the adduction that can ensure the winding quality can be ensured. It is an object of the present invention to provide a stator for a type electric motor.

[0008]

SUMMARY OF THE INVENTION In a stator of a motor according to the present invention, a concentrated winding two-phase A phase is applied to each tooth of a stator iron core having four slots and four teeth. In a stator in which windings and two-phase B-phase windings are alternately wound and arranged in series, the stator iron core has a toothed portion and a yoke portion that are integral with each other before winding. Are divided into four, and the divided iron core b of the yoke portion sandwiched between the divided iron cores a is divided into four, that is, a total of eight,
It is configured to be combined in a ring shape and integrated after winding winding is completed.

According to the present invention, it is an object of the present invention to enable winding winding without mounting a special winding guide or the like, and to ensure winding quality.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to a two-pole A-phase with concentrated winding for each tooth of a stator iron core having four slots and four teeth. In a stator in which windings and two-phase B-phase windings are alternately wound and arranged in series, the stator iron core has a toothed portion and a yoke portion that are integral with each other before winding. And the divided iron core b of the yoke portion sandwiched between the divided iron cores a is divided into four, a total of eight, and is integrated in a ring shape after the winding is completed. This has the effect of ensuring winding quality such as preventing damage to the film of the winding wound around the stator core or preventing disconnection.

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 10, the stator iron core 1 is divided into eight divided iron cores a2 and four divided iron cores b3. The divided iron core body a2 is disposed on the outer periphery of the rotor hole 4 so that the teeth 5 thereof are substantially radial, and two A-phase winding winding bodies 7 on which the A-phase winding 6 is wound are provided. Two of the B-phase windings 9 around which the B-phase winding 8 is wound at a position separated by 90 degrees in electrical angle sandwich the divided iron core b3 divided by the yoke portion 10. To form a stator 11 alternately and annularly. Then, at the time of winding, the stator core 1 is divided into eight, the insulating material 12 is attached to the four divided iron cores a2, and then the A-phase winding 6 or the B-phase winding 8 is attached. A series winding is performed by a winding machine (not shown) to form two A-phase windings 7 and two B-phase windings 9, respectively. The outer peripheral side 12a of 12 is pressed and deformed in the inner diameter direction so as to be along the inner peripheral side of the divided iron core body b3, and is configured to be annularly integrated.

The joint between the split iron core a2 and the split iron core b3 has a surface X parallel to the central axis O of the tooth portion.
In addition, both sides have a concave portion 2a, and are configured to be integrated with the convex portions 3a on both sides of the joint portion of the divided iron core body b3.

The inner peripheral surface of the yoke portion 10 of the divided iron core a2 forms a surface Y substantially perpendicular to the central axis O of the tooth portion 5, and the inner peripheral surface of the divided iron core b3 has an arc shape. Configuration.

The insulating material 12 to be attached to the divided iron core body a2 includes the upper surface, the lower surface, both side surfaces of the tooth portion 5, the inner peripheral surface of the circumferential projection 5a on the inner peripheral side of the tooth portion 5, and the yoke portion. 10 to extend linearly from the inner peripheral surface of the core 10 to about half of the inner peripheral surface of the divided iron core b3.
After being deformed into a shape along the arc of the inner peripheral surface of the above, the divided iron cores b3 are combined into a ring shape.

The insulating material 12 on the inner peripheral surface of the yoke portion 10 of the split iron core a2 is separated from the insulating material 12 of the adjacent split iron core a2 sandwiching the split iron core b3. The circumferential projections 5 on the inner peripheral side of the tooth portion 5 overlap near the circumferential center of b3.
The insulating material 12 on the inner peripheral surface of the a
Of the insulating material 12 and the vicinity of the opening 14 on the inner peripheral side of the slot 13.

As described above, according to the stator for the electric motor of the first embodiment of the present invention, the A-phase winding 6 or the B-phase winding 8 is wound on the divided iron core a2 by a winding machine (not shown). When a series winding is performed, the divided iron core body b3 is removed and the divided iron core body a is used alone.
2 can be wound by a simple winding motion without mounting a complicated winding guide on a winding machine. Winding can be performed without sliding, and damage to the winding film or occurrence of disconnection can be prevented and winding quality can be ensured.

The joint between the divided iron core a2 and the divided iron core b3 has a surface X parallel to the central axis O of the tooth 5, and both sides have a concave portion 2a and a convex portion. When the A-phase winding 6 or the B-phase winding 8 is directly wound around the divided iron core a2, the divided iron core a2 can be easily fixed to the rotating shaft of the winding machine. The structure can be simplified.

The inner peripheral surface of the yoke portion 10 of the divided iron core body a2 forms a surface Y substantially perpendicular to the center line O of the tooth portion 5,
The portion whose inner peripheral surface forms an arc shape is the divided iron core body b3. When the A-phase winding 6 or the B-phase winding 8 is directly wound around the winding winding body a2, the winding of the yoke portion 10 is performed. Since the divided iron core body b3, which is an obstacle to the wire winding operation, can be wound directly in a detached state, winding can be easily performed.

The insulating material 12 such as a winding bobbin mounted on the divided iron core body a2 includes an upper surface, a lower surface, both side surfaces of the tooth portion 5 and an inner peripheral surface of a circumferential projection 5a on an inner peripheral side of the tooth portion 5, And a configuration that linearly extends from the inner peripheral surface of the yoke portion 10 to about half of the inner peripheral surface of the divided iron core body b3 to cover, and after winding is completed,
After being deformed into a shape along the arc of the inner peripheral surface of the divided iron core body b3, the divided iron core bodies b3 are combined into a ring shape, so that the A-phase winding 6 or the B-phase winding is 8 can be wound by simple rotation of the winding machine
After the winding is completed, the outer peripheral side of the insulating material 12 is deformed into an arc shape so as to conform to the shape of the inner peripheral side of the divided iron core body b3, and then the divided iron core body b3 can be assembled in an annular shape.

The insulating material 12 on the inner peripheral surface of the yoke portion 10 of the divided iron core a2 is separated from the insulating material 12 of the adjacent divided iron core a2 sandwiching the divided iron core b3. The circumferential projections 5 on the inner peripheral side of the tooth portion 5 overlap near the circumferential center of b3.
The insulating material 12 on the inner peripheral surface of the a overlaps with the insulating material 12 of the adjacent divided iron core a2 near the opening 14 on the inner peripheral side of the slot 13, and is an A-phase winding wound around the divided iron core a2. Creepage insulation distance between the 6 or B phase winding 8 and the circumferential protrusions 5a of the split iron core b3 of the stator iron core 1 and the split iron core a2,
Alternatively, it is easy to secure the space insulation distance to a required dimension or more.

[0022]

As is clear from the above embodiment,
According to the present invention, there is provided a stator in which a two-pole A-phase winding and a two-pole B-phase winding are alternately wound and arranged on each tooth portion of a stator iron core having four slots by concentrated winding. The stator iron core has four divided iron cores a in which the teeth and the yoke are integrated before the winding is wound, and the divided iron cores of the yoke sandwiched between the divided iron cores a. b is divided into a total of eight pieces, and is combined in a ring shape after the winding is completed, so that when the A winding or the B phase winding is directly wound, a complicated winding guide is provided. It is possible to provide a stator of an adduction type electric motor that can be wound without mounting a jig and that can prevent damage to a winding film or disconnection.

Also, since the joint of the divided iron core a and the divided iron core b has a surface parallel to the central axis of the teeth, and has concave portions on both sides and no convex portions. Since the split iron core a is combined with the protrusions on both sides of the joint of the split iron core b to be integrated, the rotation axis of the winding machine during the series winding of the A winding or the B phase winding. On the other hand, the divided iron core a can be easily fixed at both end surfaces, and the fixing structure can be simplified.

Further, the inner peripheral surface of the yoke portion of the divided iron core body a forms a surface substantially perpendicular to the central axis of the tooth portion, and the inner peripheral surface of the divided iron core body b has an arc shape. Therefore, the winding operation of the winding can be performed in a state where the divided iron core body b is removed, and the winding operation can be facilitated.

The insulating material such as the winding bobbin mounted on the divided iron core body a includes the upper surface, the lower surface of the tooth portion, the inner peripheral surfaces of the circumferential projections on both sides and the inner peripheral side of the tooth portion, and the yoke portion. Is formed so as to extend linearly from the inner peripheral surface of the divided iron core body b to about half of the inner peripheral surface of the divided iron core body b. After being deformed, the divided iron core body b
Is combined into a ring, so that when the A-phase winding or the B-phase winding is wound directly around the divided iron core a, winding can be performed by a simple rotation operation of the winding machine. After the end, the outer peripheral side of the insulating material is deformed into an arc shape so as to conform to the shape of the inner peripheral side of the divided iron core body b, and then the divided iron core body b can be assembled in an annular shape.

The insulating material on the inner peripheral surface of the yoke portion of the divided iron core a is made of an adjacent divided iron core a sandwiching the divided iron core b.
And the insulating material of the inner circumferential surface of the circumferential projection on the inner circumferential side of the tooth portion is overlapped with the insulating material of the adjacent split iron core a in the slot. Since it is configured to overlap near the opening on the peripheral side, the A-phase winding or the B-phase winding wound on the divided iron core a and the divided iron core b of the stator iron core and the divided iron core a It is possible to easily secure the creeping insulation distance or the space insulation distance between the inner peripheral side protrusion and the inner peripheral side projection more than required dimensions.

[Brief description of the drawings]

FIG. 1 is a front view showing a stator core of an adduction motor according to Embodiment 1 of the present invention;

FIG. 2 is a perspective view showing a divided iron core a of a stator of the adduction motor.

FIG. 3 is a perspective view showing a divided iron core body b of a stator of the adduction motor.

FIG. 4 is a front view showing a stator of the adduction motor.

FIG. 5 is a front view showing a state in which an insulating material is attached to the divided iron core body a of the stator of the adduction motor.

FIG. 6 is a partially broken front view showing a state in which a winding is wound around a divided iron core body a of the adduction type electric motor.

FIG. 7 is a front view showing the central axis of the tooth portion on the divided iron core body a of the adduction motor.

FIG. 8 is a front view showing a state in which the outer peripheral side of the insulating material of the divided iron core body a of the adduction type electric motor is deformed into an arc shape.

FIG. 9 is a front view showing a state in which four divided iron cores a of the adduction type electric motor are arranged in a ring shape;

FIG. 10 is a partially broken front view showing a state in which the split iron core a and the split iron core b of the adduction type electric motor are combined.

FIG. 11 is a perspective view showing a state in which a winding is wound around teeth of a stator of a conventional adduction motor.

FIG. 12 is a plan view showing a part of the stator.

FIG. 13 is a front view of a stator of another conventional adduction motor.

FIG. 14 is a plan view showing a divided portion of the stator.

FIG. 15 is a plan view showing a state where a winding is wound around a divided portion of the stator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stator iron core 2 Divided iron core a 2a Depression 3 Divided iron core b 3a Convex part 4 Rotor hole 5 Teeth 5a Circumferential projection 6 A phase winding 7 A phase winding winding body 8 B phase winding Wire 9 B-phase winding body 10 Yoke section 11 Stator 12 Insulating material 13 Slot 14 Opening

Claims (5)

[Claims] 1. A two-phase A-phase winding with concentrated winding and two poles for each tooth of a stator core having four slots and four teeth.
In a stator in which B-phase windings of the poles are alternately wound and arranged in series, the stator iron core has four divided iron cores a in which the teeth and the yoke are integrated before winding. The divided iron core b of the yoke portion sandwiched between the divided iron cores a is divided into four, eight pieces in total,
A stator of an adduction type electric motor configured to be integrated into a combined ring after winding is completed. 2. A joint portion between the divided iron core a and the divided iron core b has a surface parallel to the central axis of the tooth portion, and a concave portion in the parallel surface on both sides. 2. The stator for an adduction motor according to claim 1, wherein the stator is configured to be integrated with projections on both sides of the joint of the core b. 3. The inner peripheral surface of the yoke portion of the divided iron core body a forms a surface substantially perpendicular to the central axis of the tooth portion, and the inner peripheral surface of the divided iron core body b has an arc shape. A stator for the adduction motor according to claim 1. 4. An insulating material such as a winding bobbin mounted on the divided iron core body a includes an upper surface, a lower surface, both side surfaces and an inner peripheral surface of a circumferential projection on an inner peripheral side of the tooth portion, and a yoke portion. Is formed so as to extend linearly from the inner peripheral surface of the divided iron core body b to about half of the inner peripheral surface of the divided iron core body b. After winding is completed, the shape along the arc of the inner peripheral surface of the divided iron core body b The stator for an adduction motor according to claim 1, wherein the stator is configured to combine the divided iron cores b into a ring shape after the deformation. 5. The insulating material on the inner peripheral surface of the yoke portion of the divided iron core body a includes an insulating material of an adjacent divided iron core body a sandwiching the divided iron core body b and a circumferential direction of the divided iron core body b. Overlap near the center,
2. The adduction according to claim 1, wherein the insulating material on the inner peripheral surface of the circumferential projection on the inner peripheral side of the tooth portion overlaps with the insulating material of the adjacent divided iron core body a near the opening on the inner peripheral side of the slot. Type motor stator.