JP2019205246A - Insulator, armature, rotary electric machine, winding jig, and winding method - Google Patents

Abstract

To provide an insulator that is used in combination with a plurality of kinds of winding jigs for facilitating orderly winding of a coil wire corresponding to a coil wire of different diameters.SOLUTION: An insulator is mounted onto a split iron core 5 to electrically insulate between a coil wire wound around the split iron core 5 and the split iron core 5 and includes a hole part 7f having an open outer surface at a portion abutting onto an end surface in a rotating shaft X direction of the split iron core 5.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an insulator, an armature, a rotating electric machine, a winding jig, and a winding method.

  An armature is a component provided with an electromagnet that generates a magnetic field in a rotating electrical machine. The armature that is fixed to the housing of the rotating electrical machine is called a stator, and the armature that is pivotally supported by the housing of the rotating electrical machine and rotates freely with respect to the housing is called the rotor.

  The armature is configured by winding a coil wire around an armature core. An insulator is attached to the armature iron core to electrically insulate the coil wire from the iron core.

  In the market, there is a demand for downsizing, higher output, and higher efficiency of rotating electrical machines. In order to increase the efficiency of the rotating electrical machine, it is effective to increase the diameter of the coil wire to reduce the copper loss. However, if the coil wire having a large diameter is wound loosely, a gap is generated between the wound coil wires, so that the cross-sectional area of the coil becomes large, so that the cross-sectional area of the armature becomes large. Arise. As a result, there arises a problem that the outer shape of the rotating electrical machine is enlarged.

  Therefore, a coil wire is regularly wound around an armature core, and a gap between the wound coil wires is reduced to reduce a cross-sectional area of the coil. In addition, there is a need for a technique for facilitating aligned winding of coil wires, and a plurality of patent applications related to this technique have already been published.

  For example, Patent Document 1 discloses an insulator in which a coil wire is guided to a predetermined position in a portion surrounding both side surfaces and both end surfaces of a tooth portion of an armature core, and a groove for holding the coil wire at the position is provided. .

  When the insulator described in Patent Document 1 is attached to the armature core, the coil wire can be easily aligned and wound in the first layer by winding the coil wire so as to fit into the groove of the insulator. In the second layer or more, the coil wire can be easily aligned and wound by dropping the coil wire into the valley between the coil wires of the lower layer that have been aligned and wound.

  In Patent Document 2, insulators are arranged on both end surfaces in the axial direction of the armature core, and at the corner of the insulator on the side where the coil wire starts to be wound, from the start of winding of the first layer to the end of winding. It is disclosed to have a coil holding groove for holding all the coil wires.

  If the invention described in Patent Document 2 is mounted on the armature core, the coil wires can be easily aligned and wound by winding the coil wires so as to fit into the coil holding grooves.

JP 2005-229703 A JP 2010-279241 A

  In the inventions described in Patent Document 1 and Patent Document 2, it is necessary to form a groove in the insulator so that the coil wire wound around the iron core can be fit into the insulator. This is because if the width of the groove is smaller than the diameter of the coil wire, the coil wire does not fit in the groove, and if the width of the groove is larger than the diameter of the coil wire, the coil wire cannot be held at a desired position. Therefore, in the inventions described in Patent Document 1 and Patent Document 2, it is necessary to manufacture a dedicated insulator for each diameter of the coil wire and attach it to the armature core.

  The three-phase AC voltage supplied to the electric motor varies in the range of 200V to 600V depending on the country or region where it is used. Therefore, even if it is a rotary electric machine which uses the same armature core, several types of products from which the diameter and number of turns of a coil wire differ for every destination are manufactured.

  When the invention described in Patent Document 1 or Patent Document 2 is applied to such a rotating electric machine, it is necessary to manufacture a dedicated insulator for each destination. Further, since the insulator is manufactured by resin molding, a dedicated mold is required for each coil wire diameter. Molds are expensive. For this reason, there is a problem that the cost increases when the dedicated insulator is manufactured for each destination of the product.

  The present invention has been made under such a background, and provides an insulator that is used in combination with a plurality of types of winding jigs that facilitate aligned winding of coil wires. A winding jig used in combination with such an insulator is provided.

  The present invention also provides a winding method for winding a coil wire with high density. Furthermore, the present invention provides an armature including a coil wound at high density, which can be manufactured at low cost. The present invention provides a rotating electrical machine that is small and can obtain high efficiency, and that can be manufactured at low cost. And the winding method which can manufacture an armature provided with the coil wound by high density at low cost is provided.

  An insulator according to the present invention is attached to an armature core, electrically insulates between a coil wire wound around the armature core and the armature core, and contacts an end surface of the armature core in the rotation axis direction. The contact portion is provided with a hole portion whose outer surface is opened.

  The insulator according to the present invention includes a hole portion whose outer surface is opened at a portion that contacts the end surface of the armature core in the rotation axis direction, and after the insulator is attached to the armature core, the coil wire is inserted into the hole portion. The coil wire can be wound by inserting a winding jig that facilitates the alignment winding. Therefore, when the insulator according to the present invention requires a dedicated winding jig suitable for the diameter of the coil wire, the dedicated winding jig is inserted into the hole and the coil wire is wound. Can do.

  Therefore, according to the present invention, when manufacturing the armature or the rotating electrical machine, it is not necessary to manufacture a dedicated insulator for each diameter of the coil wire, so that the manufacturing cost of the armature and the rotating electrical machine can be reduced. Therefore, according to the present invention, an armature including a coil wound at a high density can be manufactured at low cost. A rotary electric machine that is small and can obtain high efficiency can be manufactured at low cost.

The top view which shows the structure of the electric motor which concerns on embodiment of this invention The perspective view which shows the structure of the split iron core with which the electric motor of FIG. 1 is equipped, and an insulator. It is a figure which shows the structure of the upper end holder of FIG. 2, Comprising: (A) is a top view of an upper end holder, (B) is the cross section which cut | disconnected the upper end holder in the cross section shown by the AA 'line in (A). Figure It is a figure which shows the structure of the winding jig | tool which concerns on embodiment of this invention, Comprising: (A) is a top view of a winding jig, (B) is a side view of a winding jig It is a figure which shows the state which attached the upper end holder and the winding jig to the split iron core, (A) is a top view of a split iron core, (B) and (C) are AA 'in a split iron core in (A). Sectional view cut along the section indicated by the line BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the winding method which concerns on this invention, Comprising: (A)-(D) is a figure which shows the process in which an insulator and a winding jig | tool are mounted | worn to a split iron core along a time series. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the winding method which concerns on this invention, Comprising: (A)-(C) is a figure which shows the process in which the winding of a 1st layer is performed along a time series It is a figure explaining the winding method which concerns on this invention, Comprising: (A)-(C) is a figure which shows the process until a coil is completed from the winding of a 2nd layer along a time series. It is a figure which shows the form of the insulator which concerns on the modification of this invention, Comprising: Sectional drawing corresponding to FIG. 3 (B) It is a figure which shows the form and effect | action of the winding jig | tool which concerns on the modification of this invention, Comprising: (A) is a top view which shows the form of a winding jig, (B) is a plane which shows the effect | action of a winding jig. Figure

  Hereinafter, an insulator, a winding jig, and a winding method according to embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or equivalent parts are denoted by the same reference numerals.

  FIG. 1 is a plan view showing a configuration of an electric motor 1 according to an embodiment of the present invention. An electric motor 1 is an example of a rotating electrical machine according to the present invention. As shown in FIG. 1, a casing 2 having an annular cross-sectional shape, a stator 3 fixed inside the casing 2, and a stator 3 And a rotor 4 disposed on the inner diameter side. The stator 3 is configured by arranging nine divided cores 5 in a ring shape. An insulator 6 is attached to the divided iron core 5, and a coil wire (not shown) is wound around the insulator 6. The insulator 6 electrically insulates the split iron core 5 from a coil wire (not shown). The rotor 4 is pivotally supported by a bracket (not shown) and freely rotates around the rotation axis.

  FIG. 2 is a perspective view showing the configuration of the split iron core 5 and the insulator 6 provided in the electric motor 1. As shown in FIG. 2, the split iron core 5 includes a yoke portion 5a and a teeth portion 5b protruding from the yoke portion 5a in the rotation axis X direction. The insulator 6 includes an upper end holder 7 and a lower end holder 8 that are attached to the end surface of the split iron core 5 in the direction of the rotation axis X. An insulating paper 9 is attached between the upper end holder 7 and the lower end holder 8 to cover the side surface of the split iron core 5. In the above, “up / down” is an expression for convenience and is not an absolute one. That is, the electric motor 1 is not always used by being installed in such a posture that the upper end holder 7 is positioned above the lower end holder 8. The electric motor 1 is not always used by being installed in such a posture that the rotation axis X is vertical. The electric motor 1 is installed and used in various postures as necessary.

  The upper end holder 7 is located between the outer diameter side flange 7a contacting the yoke part 5a, the inner diameter side flange 7b contacting the inner diameter side end of the teeth part 5b, and the outer diameter side flange 7a and the inner diameter side flange 7b. And an intermediate portion 7c that comes into contact with the upper end surface of the tooth portion 5b. The outer diameter side flange 7a is formed with an outer diameter side opening 7d that penetrates the outer diameter side flange 7a in the radial direction, that is, the length direction of the tooth portion 5b. The inner diameter side flange 7b is formed with an inner diameter side opening 7e that penetrates the inner diameter side flange 7b in the radial direction, that is, the length direction of the tooth portion 5b. In addition, a hole 7f that runs in the radial direction of the split iron core 5 is formed in the intermediate portion 7c.

  The lower end holder 8 is also configured similarly to the upper end holder 7. That is, the lower end holder 8 includes an outer diameter side flange 8a that comes into contact with the yoke part 5a, an inner diameter side flange 8b that comes into contact with an inner diameter side end of the tooth part 5b, an outer diameter side flange 8a, and an inner diameter side flange 8b. And an intermediate portion 8c that is in contact with the lower end surface of the tooth portion 5b. The outer diameter side flange 8a is formed with an outer diameter side opening 8d that penetrates the outer diameter side flange 8a in the radial direction, that is, the length direction of the tooth portion 5b. The inner diameter side flange 8b is formed with an inner diameter side opening 8e penetrating the inner diameter side flange 8b in the radial direction, that is, in the length direction of the tooth portion 5b. In addition, a hole 8 f that runs in the radial direction of the split iron core 5 is formed in the intermediate portion 8 c.

  The upper end holder 7 and the lower end holder 8 are made of an electrically insulating resin material such as polyphenylene sulfide (PPS) resin.

  FIG. 3A is a plan view of the upper end holder 7, and FIG. 3B is a cross-sectional view of the upper end holder 7 taken along the line AA ′ in FIG. 3A. As shown in FIGS. 3A and 3B, the intermediate part 7c of the upper end holder 7 is divided into two parts and covers the corners of the cross-sectional shape of the teeth part 5b. A hole 7f is formed between the intermediate portions 7c. That is, the hole portion 7f is formed by cutting out a part of a portion that comes into contact with the end surface of the tooth portion 5b of the upper end holder 7. Therefore, the hole portion 7f penetrates between the outer surface of the portion that contacts the end surface of the tooth portion 5b of the upper end holder 7 and the inner surface of the portion. Further, the outer surface of the portion that contacts the end surface of the tooth portion 5b of the upper end holder 7 is open at the hole portion 7f.

  Further, the outer diameter side opening 7d and the inner diameter side opening 7e communicate with the hole 7f. Therefore, in FIG. 3B, even if the object has a cross-sectional shape that fits in the hole 7f, the object can be taken in and out of the hole 7f through the outer diameter side opening 7d or the inner diameter side opening 7e. it can.

  The lower end holder 8 is configured in the same manner as the upper end holder 7. That is, the intermediate part 8c of the lower end holder 8 is also divided into two parts and covers the corners of the cross-sectional shape of the teeth part 5b. A hole 8f is formed between the intermediate portions 8c. That is, the hole portion 8f is formed by cutting out a part of the portion that comes into contact with the end surface of the tooth portion 5b of the lower end holder 8. For this reason, the hole 8f penetrates between the outer surface of the portion that contacts the end surface of the tooth portion 5b of the lower end holder 8 and the inner surface of the portion. Further, the outer surface of the portion of the lower end holder 8 that is in contact with the end surface of the tooth portion 5b is open at the hole portion 8f.

  Further, the outer diameter side opening 8d and the inner diameter side opening 8e communicate with the hole 8f. Therefore, even if the object has a cross-sectional shape that fits in the hole 8f, the object can be taken in and out of the hole 8f through the outer diameter side opening 8d or the inner diameter side opening 8e.

  The insulator 6 is used in combination with the winding jig 10 shown in FIGS. 4 (A) and 4 (B). 4A is a plan view of the winding jig 10, and FIG. 4B is a side view of the winding jig 10.

  The winding jig 10 is a plate-like member in which a plurality of coil wire holding grooves 10a are formed as shown in FIGS. 4 (A) and 4 (B). The coil wire holding groove 10a is a groove for holding the coil wire 11, and has a recess in which a part of the cross section of the coil wire 11 is accommodated, as shown in FIG. That is, the size and shape of the recess of the coil wire holding groove 10a are selected so that a part of the cross section of the coil wire 11 is accommodated. Further, the plurality of coil wire holding grooves 10a are arranged at equal intervals so that the coil wires 11 held in the coil wire holding groove 10a are arranged with almost no gap. That is, the coil wire holding grooves 10a are arranged at intervals obtained by adding a small margin to the diameter of the coil wire 11. Therefore, the dimension, shape, and interval of the coil wire holding groove 10 a are different for each diameter of the coil wire 11. Therefore, when there are a plurality of types of coil wires 11 having different diameters, a dedicated winding jig 10 is prepared for each type of wire. However, since the outer dimensions of the winding jig 10 are common, even the winding jig 10 having a different wire type of the corresponding coil wire 11 can be mounted on the common insulator 6 and used. The coil wire 11 is a covered wire in which a conductor is covered with an insulating coating.

  FIG. 5A is a plan view showing a state in which the upper end holder 7 and the winding jig 10 are attached to the split iron core 5. FIGS. 5B and 5C are cross-sectional views of the split core 5 taken along the line AA ′ in FIG. The winding jig 10 is held by a holder (not shown) so as to be slidable in the vertical direction, and is inserted into the hole 7f from the inner diameter side opening 7e as shown in FIGS. 5 (A) and 5 (B). The holder is fixed to the split iron core 5. Thereafter, when the winding jig 10 is slid with respect to the holder and moved away from the teeth 5b, that is, when the winding jig 10 is moved upward in FIG. 5B, FIG. As shown, the coil wire holding groove 10a of the winding jig 10 is exposed outside the hole 7f.

  Next, a winding method performed using the winding jig 10 will be described with reference to FIGS. First, as shown in FIGS. 6B and 6C, the insulator 6 and the winding jig 10 are attached to the split iron core 5 shown in FIG. At this time, the winding jig 10 is used by being attached to a jig holder 12 as shown in FIG. The jig holder 12 is a holder that holds the winding jig 10 so as to be slidable in a direction indicated by an arrow in FIG. The jig holder 12 has a pair of holding claws 12a. Next, as shown in FIG. 6C, when the winding jig 10 is inserted into the upper end holder 7 and the lower end holder 8, A pair of holding claws 12 a sandwich the split iron core 5. As a result, the jig holder 12 is fixed to the split iron core 5. Then, the winding jig 10 is released from the jig holder 12 and the winding jig 10 is slid with respect to the jig holder 12 as shown in FIG. 10 a is exposed to the outside of the upper end holder 7 and the lower end holder 8. Then, the winding jig 10 is fixed to the jig holder 12 again.

  When the insulator 6 and the winding jig 10 are attached to the split iron core 5 to form the configuration shown in FIG. 6D, the split iron core 5 is fixed to the winding machine 13 as shown in FIG. The coil wire 11 is wound around the tooth portion 5 b of the split iron core 5. The coil wire 11 is wound while moving the coil wire 11 from the end near the yoke portion 5a toward the tip of the tooth portion 5b. As shown in FIG. 7A, the coil wire holding groove 10 a is exposed outside the upper end holder 7 and the lower end holder 8. Therefore, when the coil wire 11 starts to be wound from the end portion of the teeth portion 5b near the yoke portion 5a, the coil wire 11 is guided to the coil wire holding groove 10a disposed at the end portion near the yoke portion 5a, and the coil It is held in the line holding groove 10a. Since the coil wire holding groove 10a has a corrugated cross-sectional shape, when the coil wire 11 contacts the corrugated slope, the coil wire 11 is guided to the center of the corrugated cross-sectional shape. That is, the coil wire 11 is guided to the bottom of the coil wire holding groove 10a. Therefore, even if there is some error in the operation of the winding machine 13, the coil wire 11 is accurately positioned with respect to the coil wire holding groove 10a.

  Thereafter, when the winding of the coil wire 11 is continued, as shown in FIG. 7B, the coil wire 11 is inserted into the coil wire holding groove 10a adjacent to the coil wire holding groove 10a in which the coil wire 11 is held first. Sequentially guided and held there. Further, when the winding of the coil wire 11 is continued, the first layer winding is completed as shown in FIG. 7C. As described above, the coil wire 11 is guided to the coil wire holding groove 10a and accurately positioned. Therefore, even if there is some error in the operation of the winding machine 13, the aligned winding as shown in FIG. 7C is completed.

  When the first layer winding is completed, the second layer winding is performed as shown in FIG. The winding of the second layer is performed by winding the coil wire 11 in the direction opposite to that of the first layer, that is, in order from the tip of the tooth portion 5b toward the end near the yoke portion 5a. The second layer winding is performed such that the coil wire 11 is dropped into a valley between adjacent coil wires 11 in the first layer winding. That is, the winding of the coil wire 11 in the winding process of the second layer is performed following the winding of the first layer. Therefore, even if there is some error in the operation of the winding machine 13, sufficiently accurate aligned winding is performed.

  Thereafter, also in the third and subsequent layers, the coil wire 11 is wound following the winding of the previously wound layer, and as a result, sufficiently accurate aligned winding is performed in each layer. . Then, when the winding of the coil wire 11 is completed and the coil 14 is completed, the split iron core 5 is removed from the winding machine 13 as shown in FIG. Thereafter, as shown in FIG. 8C, the winding jig 10 is removed from the split iron core 5.

(Modification 1)
The form of the hole 7f provided in the upper end holder 7 is not limited to that shown in FIG. That is, the hole portion 7f is not limited to a through hole penetrating between the outer surface of the portion that contacts the end surface of the tooth portion 5b of the upper end holder 7 and the inner surface of the portion. It is sufficient that the hole portion 7f is opened on the outer surface of the portion that contacts the end surface of the tooth portion 5b of the upper end holder 7. Therefore, the hole 7f may have a form as shown in FIG. That is, as shown in FIG. 9, the thickness T may be reduced at the center of the intermediate portion 7c to form the thin portion 7g, and the hole 7f may be formed above the thin portion 7g. That is, the hole 7f may be a bottomed hole that does not penetrate between the outer surface of the portion that contacts the end surface of the tooth portion 5b of the upper end holder 7 and the inner surface of the portion. Similarly, the hole 8f may be a bottomed hole that does not penetrate between the outer surface of the portion that contacts the end surface of the tooth portion 5b of the lower end holder 8 and the inner surface of the portion. In this case as well, the hole 7f and the hole 8f need to have dimensions and shapes so that the entire winding jig 10 can be accommodated in the holes 7f and 8f in the cross-sectional shape. In other words, dimensions and shapes that can take the form shown in FIG.

(Modification 2)
The form of the winding jig 10 is not limited to that shown in FIG. That is, the winding jig 10 is not limited to one in which the coil wire holding groove 10 a is formed in a direction orthogonal to the longitudinal direction of the winding jig 10. As shown in FIG. 10A, the winding jig 10 may be formed such that the coil wire holding groove 10 a is obliquely intersected with the longitudinal direction of the winding jig 10. As described above, if the coil wire holding groove 10a is formed obliquely with respect to the longitudinal direction of the winding jig 10, it may be one that runs as shown in FIG. If the form of the winding jig 10 is as shown in FIG. 10, the winding position can be moved by winding the coil wire 11 diagonally on the upper end surface of the tooth portion 5b. That is, it is possible to perform short-sided cross-aligned winding that can be miniaturized at a higher density than the long-sided cross-aligned winding described in the above embodiment.

  As described above, the insulator 6 includes the holes 7f and 8f, and after the insulator 6 is mounted on the split iron core 5, the winding jig 10 can be mounted in the holes 7f and 8f. Further, when there are a plurality of types of coil wires 11 wound around the divided iron core 5 and the diameters are different from each other, a dedicated winding jig 10 is required for each diameter. The dimensions are common. Therefore, when there are a plurality of models of the electric motor 1 having the same divided iron core 5 and different diameters of the coil wire 11, the insulator 6 can be shared by all models. In other words, there is no need to use an insulator 6 that is different in shape and size for each model and dedicated to that model. As a result, the manufacturing cost of the electric motor 1 can be reduced.

  As described above, according to the present invention, there is provided an insulator having versatility capable of dealing with various coil wires having different diameters, which is easily combined with a winding jig to facilitate aligned winding. As a result, the rotating electrical machine can be easily reduced in size and increased in output. In addition, the manufacturing cost of the rotating electrical machine can be reduced.

  However, the technical scope of the present invention is not limited by the above-described embodiments and modifications. The present invention can be practiced by being freely applied, modified or improved within the scope of the technical idea described in the claims.

  The mechanical configuration of the insulator 6 is not limited to that exemplified in the above embodiment. That is, the insulator 6 is not limited to the one constituted by the upper end holder 7 and the lower end holder 8 and attached to the split iron core 5 in combination with the insulating paper 9. If the insulator 6 is configured so that the upper end holder 7 and the lower end holder 8 are connected to each other, the insulating paper 9 can be omitted. Or you may comprise the upper end holder 7 and the lower end holder 8 integrally.

  The outer shapes of the upper end holder 7 and the lower end holder 8 shown in the above embodiment are examples, and these are not limited to those illustrated. Moreover, in FIG. 3 (B), the width | variety of the thing in an edge part was narrowed among the laminated boards which comprise the teeth part 5b, and the upper end holder 7 was covered on the part which the width | variety of the teeth part 5b became narrow. Although the example is shown, the shape of the upper end holder 7 and the teeth part 5b is not limited to this.

  Moreover, although the insulator 6 is provided with the outer diameter side openings 7d and 8d and the inner diameter side openings 7e and 8e and the winding jig 10 is inserted from the inner diameter side openings 7e and 8e, the insulator 6 It is not limited to such a thing. The winding jig 10 may be inserted from the outer diameter side openings 7d and 8d. Moreover, the insulator 6 should just be provided with either one of outer diameter side opening 7d, 8d and inner diameter side opening 7e, 8e.

  If the insulator 6 is provided with both the outer diameter side openings 7d and 8d and the inner diameter side openings 7e and 8e, these function as a flow path through which the air for cooling the electric motor 1 passes, and thus the cooling air easily flows. . Therefore, if the insulator 6 includes both the outer diameter side openings 7d and 8d and the inner diameter side openings 7e and 8e, the cooling performance of the electric motor 1 is improved.

  The method for attaching the insulator 6 to the split iron core 5 is not particularly limited. As described above, the pre-formed upper end holder 7 and lower end holder 8 may be attached to the split iron core 5. Alternatively, the divided iron core 5 is put in a resin mold, and then a resin material is injected into the resin mold, and the portions corresponding to the upper end holder 7 and the lower end holder 8 are respectively provided around the divided iron core 5. The insulator 6 provided with may be formed integrally.

  In the said embodiment, although PPS was illustrated as a raw material of the insulator 6, the raw material of the insulator 6 is not limited to PPS. The insulator 6 may be made of polybutylene terephthalate, liquid crystal polymer, or other resin. Further, the resin constituting the insulator 6 may be mixed with a glass fiber to increase the strength.

  Moreover, the external shape of the winding jig | tool 10 shown in FIG.4 and FIG.10 is an illustration, Comprising: The winding jig | tool 10 is not limited to what has the external shape shown in FIG.4 and FIG.10. In particular, the width of the winding jig 10 is not limited to that shown in FIGS. 4 (A) and 10 (A). The winding jig 10 may be narrow. Moreover, the shape of the coil wire holding groove 10a illustrated in FIG. 4B is an example, and the coil wire holding groove 10a is not limited to the shape illustrated in FIG. 4B. In the cross-sectional shape of the coil wire holding groove 10a, if R processing is performed on the corner portion, that is, if the edge is removed by rounding the corner portion, the edge is not chipped. Can be expected. Further, if the edge is removed by rounding the corner, the coil wire 11 is not rubbed by the edge during winding, and the coating of the coil wire 11 is not damaged.

  Further, after the winding jig 10 is slid and the coil wire holding groove 10a is exposed outside the hole portion 7f, that is, after the state shown in FIG. 5C or FIG. Another member may be inserted between the outer diameter side openings 7d, 8d or the inner diameter side openings 7e, 8e and pushed between the winding jig 10 and the split iron core 5. When another member is pushed between the winding jig 10 and the split iron core 5 in this way, the displacement of the winding jig 10 during the winding operation is suppressed.

  In addition, the material which comprises the winding jig | tool 10 is not specifically limited. The winding jig 10 can be manufactured by appropriately selecting a resin material such as SUS or other iron-based material, brass or MC nylon, or other materials.

  In the above-described embodiment, the example in which the winding jig 10 is inserted into both the upper end holder 7 and the lower end holder 8 has been shown. However, the winding method according to the present invention includes the upper end holder 7 and the lower end holder 7. It is not limited to what is performed by inserting the winding jig 10 into each of the end holders 8. A winding jig 10 may be inserted into either the upper end holder 7 or the lower end holder 8 so that the coil wire 11 is wound around the split core 5.

  Moreover, in the said embodiment, the winding jig | tool 10 showed the example attached to the jig holder 12 so that sliding is possible. Then, after the winding jig 10 is inserted into the upper end holder 7 and the lower end holder 8, the winding jig 10 is slid with respect to the jig holder 12. However, the winding jig 10 is not limited to one that is slidably attached to the jig holder 12. The winding jig 10 may be attached to the jig holder 12 so as to be rotatable around a rotation axis extending in the length direction of the winding jig 10. Then, after the winding jig 10 is inserted into the upper end holder 7 and the lower end holder 8, the coil wire holding groove 10 a is formed between the upper end holder 7 and the lower end holder 8 by rotating around the rotation axis. It may be exposed to the outside. In this case, if the winding jig 10 is rotated in the reverse direction, the coil wire holding groove 10 a is pulled back into the upper end holder 7 and the lower end holder 8.

  In the above embodiment, an example in which one winding jig 10 is inserted into each of the upper end holder 7 and the lower end holder 8 has been shown. However, the winding method according to the present invention includes an upper end holder. 7 and the lower end holder 8 are not limited to those performed by inserting one winding jig 10 each. A plurality of winding jigs 10 may be inserted into the upper end holder 7 or the lower end holder 8 so that the coil wire 11 is wound around the split core 5. For example, the upper end holder 7 may be provided with two holes 7f, and the winding jig 10 may be inserted into each of the two holes 7f.

  The form or form of the winding machine 13 used in the implementation of the winding method according to the present invention is not particularly limited. The means for fixing the divided iron core 5 to the winding machine 13 is not particularly limited. What is necessary is just to equip the winding machine 13 with the clamp apparatus suitably designed so that the shape of the division | segmentation iron core 5 may be adapted. Alternatively, the jig holder 12 and the winding jig 10 may be attached to the winding machine 13 so that the winding machine 13 automatically attaches and detaches the winding jig 10. In this case, the winding jig 10 is detached from the split iron core 5 at the same time as the split iron core 5 is detached from the winding machine 13 or before the split iron core 5 is detached from the winding machine 13.

  In the said embodiment, although the example in which this invention is applied to the split iron core 5 was shown, the armature core to which this invention is applied is not limited to the split iron core 5. The armature core to which the present invention is applied may be an integrated armature core. Moreover, in the said embodiment, although the example provided with the yoke part 5a and the teeth part 5b in the division | segmentation iron core 5 was shown, the armature core to which this invention is applied is an armature core provided with the yoke part 5a and the teeth part 5b. It is not limited to. The present invention is applied to various types or types of armature cores.

  The iron core to which the insulator 6 is mounted is not limited to the armature core that constitutes the stator 3 of the electric motor 1 such as the split iron core 5. The iron core to which the insulator 6 is attached may be the rotor iron core of the electric motor 1, or the stator iron core or the rotor iron core of the generator. Alternatively, the insulator 6 may be attached to an iron core constituting a linear motor, or may be attached to an iron core of a transformer.

  As a specific example of the rotating electric machine according to the present invention, the inner rotor type electric motor 1 is illustrated, but the rotating electric machine according to the present invention is not limited to the inner rotor type electric motor 1. The rotating electrical machine according to the present invention may be a generator, or may be an outer rotor type electric motor or a generator. In short, the whole and detailed configuration of the rotating electrical machine according to the present invention can be arbitrarily selected.

DESCRIPTION OF SYMBOLS 1 Electric motor, 2 casing, 3 stator, 4 rotors, 5 split iron core, 5a yoke part, 5b teeth part, 6 insulator, 7 upper end holder, 7a outer diameter side flange, 7b inner diameter side flange, 7c middle part, 7d Outer diameter side opening, 7e Inner diameter side opening, 7f Hole, 7g Thin wall part, 8 Lower end holder, 8a Outer diameter side flange, 8b Inner diameter side flange, 8c Middle part, 8d Outer diameter side opening, 8e Inner diameter side opening, 8f Hole, 9 Insulating paper, 10 Winding jig, 10a Coil wire holding groove, 11 Coil wire, 12 Jig holder, 12a Holding claw, 13 Winding machine, 14 Coil

Claims (10)

The armature core is mounted and electrically insulated between a coil wire wound around the armature core and the armature core,
Provided with a hole portion whose outer surface is opened at a portion that contacts the end surface of the armature core in the rotation axis direction;
Insulator. The hole is formed in a portion of the insulator that contacts the end surface of the tooth portion of the armature core.
The insulator according to claim 1. The hole portion is a through hole that penetrates a portion of the insulator that contacts the end surface of the tooth portion.
The insulator according to claim 2. The hole is a bottomed hole that does not penetrate a portion that contacts the end surface of the teeth portion of the insulator.
The insulator according to claim 2. The insulator is
On the outer diameter side of the part that contacts the end surface of the teeth part, and comprising an outer diameter side flange connected to the part,
The outer diameter side flange is
An outer diameter side opening that penetrates the outer diameter side flange in the radial direction and communicates with the hole,
The insulator according to any one of claims 2 to 4. The insulator is
On the inner diameter side of the part that contacts the end face of the teeth part, comprising an inner diameter side flange connected to the part,
The inner diameter side flange is
An inner diameter side opening that penetrates the inner diameter side flange in the radial direction and communicates with the hole,
The insulator according to any one of claims 2 to 5. It is configured by combining multiple split iron cores,
The insulator according to any one of claims 1 to 6 is attached to each of the divided cores.
Armature. The armature according to claim 7 is provided,
Rotating electric machine. A winding jig that is inserted into the hole of the insulator and used when the coil wire is wound around the armature core to which the insulator according to any one of claims 1 to 6 is mounted. There,
A coil wire holding groove for holding the coil wire is formed,
Winding jig. Inserting the winding jig according to claim 9 into the hole portion of the insulator according to any one of claims 1 to 6 attached to the armature core;
The coil wire is wound around the armature core along the coil wire holding groove provided in the winding jig, and then the coil wire is wound around the armature core along the previously wound coil wire. Process,
After the winding of the coil wire is completed, withdrawing the winding jig from the armature core,
Winding method.

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