JP2006081398A - Method of manufacturing stator of inner rotation type motor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the assembling workability of a stator, when a series winding is wound in a 2-pole 2-phase motor and to assure the insulating distance between the winding and a stator core with few components. <P>SOLUTION: The stator core is divided into 4 split iron cores a4 and 4 split cores b4 held by the split iron cores a4 into the total of 8 split iron cores. Only the 4 split iron cores a4 are arranged in the normal size of the stator at the winding working time, a slot insulating film is deformed, while the split iron cores a4 are held in annular shape, as they are. The method of manufacturing includes the steps of continuously winding by each phase, and then integrating them, while split iron cores b are pressed against from the outer circumferential direction. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a stator of an internal rotation type electric motor having a structure in which a winding is directly wound around a divided iron core body obtained by dividing a stator iron core into a plurality of parts, and then the divided iron core body is integrated into a ring shape and the stator It relates to a manufacturing method.

  Conventionally, in a method for manufacturing a stator of this type of internal motor, a method for manufacturing a stator in which a plurality of divided iron cores are wound and then the divided iron cores are arranged annularly Is widely used (see, for example, Patent Document 1).

  Hereinafter, the stator of the internal-rotation motor will be described with reference to FIGS. 11 and 12.

  As shown in FIG. 11, the divided iron cores 201 insulated by the insulating materials 202 and 203 are held in a ring shape for each phase separately, and the A phase winding 204 is continuously passed over the poles. The wire 205 is connected and wound, and as shown in FIG. 12, a plurality of B-phase windings 206 are continuously connected by the connecting wire 207 and wound, and then fixed in a ring shape. It was a manufacturing method of a child.

  In addition, in this type of stator for an internal rotation type motor and a method for manufacturing the same, a long insulating material is attached to the divided iron core body a in a circumferential direction, and windings are wound for each phase. In addition, an annularly integrated one is also shown (for example, see Patent Document 2).

  Hereinafter, the stator of the internal motor and the manufacturing method thereof will be described with reference to FIGS.

As shown in the figure, the stator iron core 300 is divided into a total of eight parts, including four divided iron cores a301 and four divided iron cores b304. The teeth 301-1 are arranged on the outer periphery of the wire so that the teeth 301-1 are substantially radial, and the two A-phase winding wound bodies 307 around which the A-phase winding 306 is wound are separated from each other by 90 degrees in electrical angle. Two of the B-phase winding wound bodies 309 around which the B-phase winding 308 is wound are sandwiched between the divided iron cores b304 divided by the yoke portion 301-2 and arranged in an annular shape alternately and fixed. A child 310 is configured. Then, the insulating material 302 is applied to the divided iron core body a301 on the upper surface, the lower surface, and both side surfaces of the tooth portion 301-1, the inner peripheral surface of the circumferential protrusion 303 on the inner peripheral side of the tooth portion 301-1, and the yoke portion 301-. The inner peripheral surface of the divided inner core b304 of the inner peripheral surface 2 is mounted so as to extend linearly to about half of the inner peripheral surface, and the number of poles A-phase winding 306 and the number of poles B-phase winding 308 are After each winding is continuously wound in a separate process, and after winding is finished, the insulating material 302 is deformed into a shape along the arc of the inner peripheral surface of the divided iron core body b304, and then the A phase winding is performed. The wire winding body 307 and the B-phase winding winding body 309 are alternately arranged in an annular shape, and then the stator 310 that combines and integrates the divided iron core bodies b304 and the manufacturing method thereof are provided.
JP 2000-358346 A JP 2001-238378 A

  In the conventional stator configuration shown in FIGS. 11 and 12, it is difficult to manage the connecting wire 205, and the divided iron cores 201, which are separately wound around several poles, are combined into an annular shape. There was a problem that it took a lot of work to do.

  Further, in the configuration shown in FIGS. 13 to 15, four divided iron cores a are arranged in an annular shape with the normal dimensions of the stator, and two-pole A-phase winding or two-pole B-phase winding is wound. In the case of direct winding by a wire machine (not shown), the insulating material attached to the split iron core body a for the B phase winding is used for winding of the winding machine when the A phase winding is wound. Similarly, when the B-phase winding is wound, there is a problem that the insulating material attached to the divided iron core body a for winding the A-phase winding becomes an obstacle to the winding operation of the winding machine. It was.

  The present invention solves the above-described problem. Four divided iron cores a are arranged in an annular shape with a regular dimension of a stator, and a two-pole A-phase winding or a two-pole B-phase winding is wound. In the case of direct winding by a machine (not shown), when the A phase winding is wound, the insulating material attached to the divided iron core body a for the B phase winding is deformed and held, whereby the winding machine It is an object of the present invention to provide a stator for an adder motor and a method for manufacturing the same.

  In the stator of the internal motor according to the present invention, there are four divided iron cores a in which the stator core composed of four slots and four teeth is laminated integrally with the teeth and the yoke. The divided iron core body b, in which the yoke portions sandwiched between the divided iron core bodies a are stacked, is divided and divided into a total of four pieces, and the four divided iron core bodies a are used as stators. Hold the ring with regular dimensions in an annular shape, wind the work of winding the 2-pole A-phase winding and the 2-pole B-phase winding directly from the outer periphery of the motor stator by concentrated winding after insulation treatment In the insulation process, one slot insulating film Y per slot is mounted so that the end thereof is in the vicinity of the center of the slot outer periphery opening, and the teeth of the divided iron core a around which the winding is wound are attached. A slot far from the tooth portion of the divided iron core a which winds the winding while deforming the end face of the near slot insulating film Y in the outer diameter direction The end face of the edge film Y is deformed and held so as not to be an obstacle to the winding work and wound, and after all the winding is completed, the divided iron core b is moved from the outer diameter direction toward the inner diameter direction. When moving, a stator manufacturing method for an adder type electric motor in which the stator is assembled while holding and moving and pressing the end surfaces of the slot insulating film Y to overlap is used.

  According to the present invention, the four tooth portions are fixed in an annular shape with the regular dimensions of the stator, the end face of the slot insulating film Y close to the tooth portions of the split iron core body a is deformed in the outer diameter direction, and the winding Since the end surface of the slot insulating film Y far from the tooth portion of the divided iron core a to be wound is deformed and held so as not to hinder the winding operation, the winding is wound, so that the assembly of the divided iron core can be performed with less effort. Is possible. Then, after all the windings are completed, when the divided iron core body b is moved from the outer diameter direction toward the inner diameter direction, the stator is held while moving and pressing the end surfaces of the slot insulating films so as to overlap each other. In addition, the insulating treatment uses one slot per slot, a total of four slot insulating films Y, and other insulating materials X, etc., and the circumferential end surfaces of the slot insulating films Y are at least 1 each other. The cutting length with an overlap part of 5 mm or more is set, and the axial length of the outer peripheral part of the slot center part and the inner peripheral part of the slot center part including the overlap part is set to the thickness of the stator core plus 3 mm or more. In order to secure the insulation distance between the winding and the stator iron core without inserting an insulating wedge, without attaching an insulating wedge or the like between the winding and the stator iron core, Line and the stator insulation distance can be made to secure a predetermined value or more of the inner rotor type motor between the stator iron core and it is possible to provide a manufacturing method thereof.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of the stator of the internal rotation type | mold motor with the effect which can assemble a stator with little effort can be provided.

  In addition, it is possible to provide a stator for an internal rotation type motor having a configuration capable of ensuring an insulation distance between the stator winding and the stator iron core without mounting an insulating wedge or the like.

  Further, it is possible to provide a stator for an adder type electric motor capable of preventing the slot insulating film Y from falling off.

  According to a first aspect of the present invention, there is provided a stator manufacturing method for a stator of an internal rotation type motor, in which a stator core composed of four slots and four teeth is laminated integrally with the teeth and the yoke. The divided iron core body a and four divided iron core bodies b in which the yoke portions sandwiched between the divided iron core bodies a are laminated and divided into a total of eight pieces, and the divided iron cores are divided. Only the four bodies a are held in an annular shape with the regular dimensions of the stator, and after the insulation process, concentrated winding and 2-winding A-phase winding direct winding and 2-pole B-phase winding from the outer periphery of the stator In the winding work in which the winding is wound directly, the insulating treatment is performed by mounting one slot insulating film Y per slot so that the end thereof is in the vicinity of the center of the slot outer peripheral opening, and winding the winding. The circumferential end of the slot insulating film Y close to the teeth of the divided iron core a to be deformed is deformed in the outer diameter direction so as not to hinder the winding work. In both methods, the winding end is wound while the circumferential end of the slot insulating film Y far from the teeth of the split iron core a winding the winding is deformed in the outer diameter direction so as not to hinder the winding operation. It is.

  According to a second aspect of the present invention, there is provided a method of manufacturing a stator of an inversion motor, wherein after the end of winding winding, the circumferential end portion in the vicinity of the center of the slot outer peripheral opening of the slot insulating film Y is This is a method for manufacturing a stator of an internal rotation type electric motor in which a split iron core body b is assembled while being pressed and held so that ends thereof overlap.

  Embodiments of the present invention will be described below with reference to the drawings.

Example 1
As shown in FIGS. 1 to 10, a stator iron core 1 having four slots 15 is divided into four divided iron cores a4 and a yoke part 3—in which a tooth part 2 and a yoke part 3-1 are integrated. The divided iron core body a4 is divided into eight parts, ie, four divided iron core bodies b5, and the tooth portions 2 are radially arranged on the outer periphery of the rotor hole 6, and the positions thereof are normal inner and outer diameter dimensions. And an insulating material X32-1 that is resin-molded and insulates the upper and lower surfaces of the divided iron core body a4, and the divided iron core body a4. After the insulation treatment with the insulating material 32 made of the slot insulating film Y32-2 that insulates the side surface of the slot 15 and the inner peripheral side surface of the divided iron core body b5, it is close to the tooth portion of the divided iron core body a4 around which the winding is wound. The end face of the slot insulating film Y32-2 on the side is deformed in the outer diameter direction, and the divided iron core a4 The two-phase A-phase winding 7 or B-phase winding 9 is provided to each of the divided iron cores a4 in a state in which the slot insulating film Y32-2 on the far side is deformed and held so as not to interfere with the winding operation. Wrap directly. After the winding is completed, when the divided iron core b5 is moved from the outer diameter direction toward the inner diameter direction, the end face of the slot insulating film Y32-2 is held so as to overlap and fixed while moving and pressing. A manufacturing method for assembling the child 14 is used.

  In the above configuration, the four divided iron cores a4 can be wound around the A-phase winding 7 and the B-phase winding 9 while being held in an annular shape with the regular dimensions of the stator 14, and the slot insulating film Y32- Since the split iron core body b is assembled so that the ends of 2 overlap, there is no need to combine two A-phase winding bodies 10 and B-phase winding bodies 11 respectively, and an insulating wedge is used as the A-phase winding. Since it is not necessary to secure an insulation distance by inserting between the winding 7 and the B-phase winding 9 and the stator iron core, the stator 14 can be assembled with less effort.

  Further, in the same configuration, each of the four slots 15 of the stator core 1 is provided with one slot insulating film Y32-2 and other insulating material X32-1, and this slot insulating film Y32-2. The end faces in the circumferential direction have at least an overlap portion of 1.5 mm or more at the outer peripheral portion of the central portion of the slot 15 and, at the same time, the axial direction of the overlapping portion of the slot insulating film Y32-2 and the inner peripheral portion of the central portion of the slot 15 The length is set to a cutting length that is longer than the stack thickness of the stator core 1 plus 3 mm or more, that is, 1.5 mm or more from the load side end surface of the stator core 1 and 1.5 mm or more from the non-load side end surface.

  In the above configuration, the insulation distance between the two-pole A-phase winding 7 and B-phase winding 9 and the stator core 1 is reliably secured to 1.5 mm or more at the outer peripheral portion and inner peripheral portion of the central portion of the slot 15. Will be. The other portions are secured at an insulation distance of a predetermined value or more by the insulating material X32-1.

  As shown in the figure, the slot insulating film Y32-2 mounted along the wall surface of the slot 15 of the divided iron core body a4 includes a part of the insulating material X32-1 that insulates the upper surface of the divided iron core body a4. It is configured to be held by a part of the insulating material X32-1 that insulates the lower surface.

  In the above configuration, the slot insulating film Y32-2 is prevented from falling off from the slot wall surface of the stator core 1.

  In the embodiment, the axial length in the vicinity of the outer peripheral portion and the inner peripheral portion of the central portion of the slot 15 of the slot insulating film Y32-2 is set to the axial length of the stator core 1 plus 3 mm (1.5 mm on one side). In addition, the overlap size of the outer peripheral portion of the slot 15 of the slot insulating film Y32-2 is 1.5 mm or more, but this value should be changed according to the rated voltage of the motor, It is to be decided.

The front view which shows the stator iron core of the internal rotation type | mold electric motor of Example 1 of this invention The perspective view which shows four division | segmentation iron core bodies a of the stator iron core of the same adder type electric motor The perspective view which shows the detail of the division | segmentation iron core body a of the same typical electric motor Detailed perspective view showing four divided iron cores b of the stator iron core of the same adder motor The perspective view which shows the detail of the division | segmentation iron core body b of the same adder type electric motor The front view which shows the state after arrange | positioning the four division | segmentation iron core bodies a of the stator iron core of the same internal type | mold motor to a regular dimension, and an insulation process The front view which shows the state which deform | transforms the edge part of the slot insulating paper Y with which the split iron core a of the same internal type motor was mounted, and winds a coil | winding The perspective view which shows the state which shape | molded the slot insulation paper Y of the same adder type electric motor in the mounting shape Front view showing a state in which the slot insulating paper of the internal motor is unfolded Partial sectional view of the stator of the adder motor Front view showing a stator of a conventional adder motor The fragmentary sectional view which shows the state which wound the winding to the division | segmentation iron core body a of the same internal type motor Partial sectional view of the stator of another conventional adder motor The fragmentary sectional view which shows the state which wound the winding to the division | segmentation iron core body a of the same internal type motor The front view which shows the state which formed the insulating material, after winding a coil | winding to the division | segmentation iron core body a of the same internal type motor

Explanation of symbols

1 Stator Iron Core 2 Teeth 3-1, 3-2 yoke 4 Split Iron Core a
5 split iron core b
6 Rotor hole 7 Phase A winding 9 Phase B winding 10 Phase A winding winding body 11 Phase B winding winding body 14 Stator 15 Slot 32 Insulating material 32-1 Insulating material X
32-2 Slot insulation film Y

Claims (2)

A stator iron core composed of four slots and four tooth portions is sandwiched between four divided iron core bodies a in which the tooth portions and the yoke portions are integrally laminated, and the divided iron core body a. The divided iron core body b in which the yoke portions are laminated is divided and divided into a total of four pieces, and only the four divided iron core bodies a are held in an annular shape with the regular dimensions of the stator, and after insulation treatment In the winding work of concentrated winding and direct winding of 2-pole A-phase winding and 2-pole B-phase winding from the outer peripheral side of the motor stator, the insulation treatment is one per slot. The slot insulating film Y of the slot insulating film Y is mounted so that its end is near the center of the slot outer periphery opening, and the circumferential end of the slot insulating film Y is close to the teeth of the split iron core a around which the winding is wound. The slot is deformed in the outer diameter direction so as not to hinder the winding work, and the slot far from the tooth portion of the split iron core a around which the winding is wound. Manufacturing method of the inner rotor type motor stator ways of winding wound while being deformed in the radially outward direction so as not to circumferential end portion of the insulating film Y to failure of the winding operation. After the winding is finished, the split iron core b is assembled while pressing and holding the circumferential end near the center of the slot outer periphery opening of the slot insulating film Y so that the ends overlap. Item 2. A method for manufacturing a stator of an inversion motor according to Item 1.

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