JP2008125212A - Dynamo-electric machine and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify the manufacturing work and improve a space factor within a stator slot and the increase of the number of coil turns in armature winding, in a dynamo-electric machine with an armature winding coil wound distributedly. <P>SOLUTION: The dynamo-electric machine includes a stator core 11 which has a plurality of teeth 13 and a stator slot 14 which is constituted between the plurality of teeth 13 and on which stator winding is to be wound and a plurality of coil assemblies 12 which are wound in the stator slots 14 which are paired astride the above plurality of teeth 13 and constitute the above armature winding. The above armature winding has a distributed winding structure. Herein, the above coil assemblies 12 are inserted into the side of an outer layer in one stator slot and are inserted into the side of an inner layer in the other stator slot 14, in the paired stator slots 14 for insertion, and respective coil assemblies 12 are in roughly the same shape. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a rotating electrical machine and a manufacturing method thereof, and more particularly to a structure of an AC generator or a stator of an electric motor having coils wound around a plurality of teeth of a stator core and a manufacturing method thereof.

  In conventional rotating electric machines, proposals have been made to improve the output of the rotating electric machine by improving the space factor of the stator and increasing the number of turns of the coils in the armature winding (for example, Patent Document 1 and Patent Document 2). In Patent Document 1 (Japanese Patent No. 2927288), a square coil is molded into a substantially U-shaped coil segment and inserted into a slot of a stator to improve the space factor. Further, in Patent Document 2 (Japanese Patent No. 3749242), a plurality of wound armature winding coils are manufactured, and the connecting portions to which the armature winding coils of each phase are connected are also integrated with the armature winding coils. It has been proposed to be manufactured in the state and inserted into the stator slot in that state.

Japanese Patent No. 2927288 Japanese Patent No. 3749242

  However, in Patent Document 1 (Japanese Patent No. 2927288), the space factor is improved by using a substantially U-shaped coil segment, but on the other hand, the number of turns of the coil in the armature winding is increased. In this case, the number of coil segments must be increased by that amount, and the number of coil segments connected accordingly increases, resulting in an increase in manufacturing cost due to complicated processes. Further, in Patent Document 2 (Japanese Patent No. 3749242), since the windings for one phase are integrally manufactured, it is not necessary to connect the coils of the same phase, but instead, the one-phase electric machine connected in a complicated manner. It becomes necessary to produce a child coil. Furthermore, when the rotating electric machine has a multi-phase distributed winding stator, the armature winding coils of each phase must be combined and inserted into the stator slots, and the armature winding coils are combined. Complicated work is required, and workability deteriorates.

  The present invention aims to simplify the manufacturing work and improve the space factor in the slot and increase the number of coil turns in the armature winding in a rotating electric machine having distributed armature winding coils. It is what.

  In the rotating electrical machine according to the present invention, a core having a plurality of teeth and a slot formed between the teeth and around which the armature winding is wound, and the armature winding wound around a pair of slots across the teeth. In a rotating electrical machine comprising a plurality of coil assemblies constituting a wire, and wherein the armature winding has a distributed winding structure, the coil assembly is a pair of inserted slots, and each coil assembly is an outer layer in one slot. In the other slot, the coil assembly is inserted in the inner layer side, and each coil assembly has substantially the same shape.

  In the method of manufacturing a rotating electrical machine according to the present invention, a plurality of teeth and a core formed between the teeth and having a slot around which the armature winding is wound, and a pair of slots straddling the teeth are wound. In manufacturing a rotary electric machine having a plurality of coil assemblies and the armature windings having a distributed winding structure, the coil assemblies have substantially the same shape. The other slot is inserted on the outer layer side, and the other slot is inserted on the inner layer side.

  According to the present invention, in a rotating electric machine equipped with distributed armature winding coils, the manufacturing operation is simplified, and the space factor in the slot is improved and the number of coil turns in the armature winding is increased. realizable.

Embodiment 1 FIG.
A first embodiment of the present invention will be described with reference to FIGS. 1 is a longitudinal sectional view showing a configuration of a rotating electrical machine according to Embodiment 1 of the present invention. FIG. 2 is a perspective view showing the configuration of the stator. FIG. 3 is a perspective view of a main part showing a state where the coil assembly is inserted into the stator. FIG. 4 is a perspective view showing the shape of the coil assembly mounted in the stator.

  1 and 2, the rotating electrical machine 100 has a configuration as a vehicular generator, and is provided to cover a field coil 21 that generates a field for generating a main magnetic flux and the field coil 21. A rotor 2 having pole cores 22, 23, a front bracket 3 and a rear bracket 4 that support a rotating shaft 24 provided on the rotor 2 and rotatably hold the rotor 2, There is provided a stator 1 for holding an armature winding coil constituted by a coil assembly 12. The stator 1 includes a stator core 11, a plurality of teeth 13 projecting inward from a substantially cylindrical back yoke 11 a constituting the stator core 11, and a coil assembly 12 formed between the teeth 13. A stator slot 14 around which a coil of the armature winding to be wound is wound, and a coil assembly 12 wound around a plurality of teeth 13 and wound around a pair of stator slots 14. The stator core 11 has a necessary thickness by stacking a plurality of thin electromagnetic steel plates, and is fixed so as not to be disassembled by welding, caulking, or the like.

  As shown in FIG. 4, the coil assembly 12 is formed into a shape that is wound from the inner periphery to the outer periphery in a single line on the same plane, and the number required for the stator 1 can be manufactured in advance. The manufactured coil assembly 12 is inserted into the stator slots 14 with a predetermined interval so as to be wound around the teeth 13 of the stator core 11.

  Here, as shown in FIG. 3, the coil assembly 12 is inserted so as to pass through the outer peripheral side of the stator slot 14 on one side and pass through the inner peripheral side of the stator slot 14 on one side. That is, the coil assembly 12 is accommodated so that the linearly extending portion 12a on the left side of the coil assembly 12 that extends vertically in the stator slot 14 on one side passes through the outer peripheral side of the stator slot 14 and is fixed on one side. In the child slot 14, the linearly extending portion 12 b on the right side of the coil assembly 12 extending vertically is accommodated so as to pass through the inner peripheral side of the stator slot 14.

Definitions of terms in the embodiment according to the present invention are as follows.
Armature winding: A coil constituting each phase of the stator. A plurality of coil assemblies 12 are connected.
Coil assembly: A coil that has been wound a plurality of times. The connection point of the coil assembly 12 is connected after being inserted into the stator slot 14 of the stator core 11 or before being inserted to constitute an armature winding.
Coil segment: A coil wound a plurality of times in a row. The coil assembly 12 is configured by connecting a plurality of coil segments 15.

  Next, operations and effects of the first embodiment will be described. In the stator 1, the coil assemblies 12 are wound in one row in each stator slot 14 and one coil assembly 12 is wound on the inner and outer layers across the teeth 13, so that all the coil assemblies 12 have the same shape. Each resistance value, inductance, cooling property, etc. are the same, output fluctuation and generation of noise, etc. can be prevented, and there is no problem with output, noise, etc.

  Also in the manufacturing process, the process of manufacturing the coil assembly 12 and the process of manufacturing the stator core 11 can be performed in parallel, and thereafter, the process of inserting the coil assembly 12 into the stator core 11 and the teeth 13 at a time. Since the coil assembly 12 can be wound, the process time can be shortened.

(1A) According to the first embodiment of the present invention, a plurality of teeth 13 projecting in an inner diameter direction from a substantially cylindrical back yoke 11a and a stator around which an armature winding is wound are formed. A stator core 11 having a slot 14 and a plurality of coil assemblies 12 wound around a pair of stator slots 14 across the plurality of teeth 13 are provided, and the armature winding has a distributed winding structure. In the rotating electrical machine having the stator 1, the coil assembly 12 is inserted into the stator slot 14 into which the coil assemblies 12 are inserted into the outer layer side and the inner layer side in a pair of stator slots 14 to be inserted. Each of the coils has a stator slot 14 and is inserted into the outer layer side of one stator slot 14 and inserted into the inner layer side of the other stator slot 14. Since the assembly 12 has substantially the same shape, in the rotating electrical machine having the distributedly wound armature winding coils, the manufacturing operation is simplified and the space factor in the stator slot 14 is increased. It is possible to obtain a rotating electrical machine that can realize an improvement in the number of turns and an increase in the number of coil turns in the armature winding.
That is, in the rotating electrical machine in which the armature winding coil is wound on the teeth 13 in the stator 1 of the distributed winding and having the same shape on the inner and outer layers of the stator slot 14 and the coil 13 is formed in the same shape in advance. The coil assembly 12 is manufactured by inserting one stator slot 14 on the outer peripheral side and the other stator slot 14 on the inner peripheral side. By inserting the coil assembly 12 wound in advance several times into the stator core 11, the number of turns wound around one stator slot can be increased, and the space factor in the stator slot 14 is improved. be able to. Further, when inserted into the inner and outer layers, they have substantially the same shape, and the resistance, inductance, cooling performance, etc. of the coil assemblies 12 are the same. In addition, it is easy to make the coil assembly 12 having the same shape, and the process of manufacturing the stator core 11 and the process of manufacturing the coil assembly 12 are performed separately, and the coil assembly 12 is inserted into the stator core 11 later. By adopting the process, the production time can be shortened and the manufacturing cost can be reduced.

(1B) According to Embodiment 1 of the present invention, a plurality of teeth 13 projecting in the inner diameter direction from a substantially cylindrical back yoke 11a and a stator formed between the teeth 13 and wound with an armature winding A stator core 11 having a slot 14 and a plurality of coil assemblies 12 wound around a pair of stator slots 14 across the plurality of teeth 13 are provided, and the armature winding has a distributed winding structure. In manufacturing the rotating electrical machine having the stator 1, the coil assemblies 12 have substantially the same shape, and in each of the stator slots 14 that form a pair to be inserted, each coil assembly 12 has an outer layer side in one stator slot 14. The other stator slot 14 is inserted into the inner layer side, so that the rotating electrical machine having the distributed armature winding coil is provided. Oite simplifies the manufacturing operation, and it is possible to obtain a manufacturing method of a rotating electric machine capable of realizing an increase in the number of coil turns in the improvement and the armature winding of the space factor of the stator slot 14.
That is, in the distributed winding stator 1, when the armature winding coil is wound around the teeth 13 in substantially the same shape on the inner and outer layers of the stator slot 14, a coil assembly 12 formed in advance in substantially the same shape is formed. The coil assembly 12 is manufactured by inserting one stator slot 14 on the outer peripheral side and the other stator slot 14 on the inner peripheral side. By inserting the coil assembly 12 previously wound several times into the stator core 11, the number of turns wound around one stator slot can be increased, and the space factor in the stator slot 14 can be improved. it can. Further, when inserted into the inner and outer layers, they have substantially the same shape, and the resistance, inductance, cooling performance, etc. of the coil assemblies 12 are the same. In addition, it is easy to make the coil assembly 12 having the same shape, and the process of manufacturing the stator core 11 and the process of manufacturing the coil assembly 12 are performed separately, and the coil assembly 12 is inserted into the stator core 11 later. By adopting the process, the production time can be shortened and the manufacturing cost can be reduced.

Embodiment 2. FIG.
A second embodiment of the present invention will be described with reference to FIGS. FIG. 5 is a perspective view of the main part of the stator according to Embodiment 2 of the present invention, and FIG. 6 is a perspective view of the coil assembly 12.
In the second embodiment, the configuration other than the specific configuration described here has the same configuration contents as the configuration in the first embodiment described above, and exhibits the same operation. In the drawings, the same reference numerals indicate the same or corresponding parts.

In the second embodiment, as shown in FIG. 6, the coil assembly 12 forms a coil segment 15 wound in a line from the inner periphery to the outer periphery on the same plane, and then joins a plurality of coil segments 15 together. Configured. At this time, the coil segments 15 to be combined are set so that the winding directions of adjacent ones are reversed. In this way, the current flowing through the coil assembly 12 by combining the coil segments 15 and connecting the connection portions 16 provided on the inner periphery or the connection portions provided on the outer periphery among the connection portions of the coil segment 15. Can be aligned.
Thereafter, as in the first embodiment, as shown in FIG. 5, the coil assembly 12 is inserted into the stator slot 14, and the stator slot 14 inserted into the outer layer side in the pair of stator slots 14 to be inserted A stator slot 14 is inserted on the inner layer side. That is, the coil assembly 12 is accommodated so that the linearly extending portion 12a on the left side of the coil assembly 12 that extends vertically in the stator slot 14 on one side passes through the outer peripheral side of the stator slot 14 and is fixed on one side. In the child slot 14, the linearly extending portion 12 b on the right side of the coil assembly 12 extending vertically is accommodated so as to pass through the inner peripheral side of the stator slot 14.

  The effect of the second embodiment of the present invention is that the number of turns of the coil assembly 12 can be easily increased by configuring the coil assembly 12 by connecting a plurality of coil segments 15, and the output of the rotating electrical machine can be increased. improves. In addition, by manufacturing the coil assembly 12 by combining the plurality of coil segments 15 before inserting the coil assembly 12 into the stator slot 14, the coil assembly 12 can be manufactured in a stable state, and workability is improved.

  Further, when the two coil segments 15 are combined, the coil end faces on the inner peripheral side are connected as shown in FIG. At this time, if the connecting portion 16 of the coil segment 15 is flat, a sufficient contact area between the coil segments 15 can be secured and the coil segments 15 can be reliably connected. Convenient.

  Furthermore, if the coil segments 15 are manufactured so that the coil end faces to be connected are substantially flush when the coil segments 15 are stacked, the coil segments 15 can be connected under more stable conditions, which is convenient for manufacturing the coil assembly 12. When the coil assembly 12 is manufactured by combining one or a plurality of the combined coil segments 15, the coil assembly 12 is configured by an even number of coil segments 15.

  Then, the connection of the coil segment 15 is first performed at the connection portion 16 provided at the coil end point on the inner periphery, so that the connection point drawn from the coil assembly 12 always comes to the outer periphery side. Becomes easier and the workability is improved. Moreover, since it is not necessary to pull out the connection point from the inside, the coil end can be made compact.

(2A) According to the second embodiment of the present invention, in the configuration according to the item (1A) in the first embodiment, the coil assembly 12 includes a plurality of coil segments 15 wound in a row a plurality of times. Since it is configured to be connected, in a rotating electric machine having a coil of distributed armature winding, the manufacturing operation is simplified, and the space factor in the stator slot 14 is improved and the armature winding An increase in the number of coil turns can be realized, the number of necessary coil assemblies 12 can be reduced, and a rotating electrical machine that can simplify the interconnection configuration of the coil assemblies 12 can be obtained.
That is, by configuring the coil assembly 12 with a plurality of coil segments 15, the coil assembly 12 can be wound in more layers. In addition, since the number of coil assemblies 12 inserted into the stator slot 14 can be reduced in order to achieve the same number of turns, and it is not necessary to connect the coil assemblies 12 to each other, the coil end can be made compact.

(2B) According to the second embodiment of the present invention, in the configuration of the (1A) term in the first embodiment or the (2A) term in the second embodiment, the coil assembly 12 has an even number of coil segments 15. Therefore, in the rotating electric machine having the coils of the distributedly wound armature winding, the manufacturing operation is simplified, the space factor in the stator slot 14 is improved, and the coil turn in the armature winding The number of coil assemblies 12 required can be reduced, the number of necessary coil assemblies 12 can be reduced, the interconnection structure of the coil assemblies 12 can be simplified, and a rotating electrical machine that can facilitate connection work can be obtained. .
That is, when the coil segment 15 is manufactured by winding a coil in one row, one end portion comes inside the coil segment 15. For this reason, by connecting two coil segments 15 to each other and connecting the inner ends, a connection portion between the other coil assembly 12 and the other coil assembly 12 can be formed on the outer peripheral side of the coil assembly 12. Connection is facilitated, and the assembly of the stator is improved. In addition, by connecting a plurality of connecting members of the two coil segments 15, the coil assembly 15 always has a connection point outside the coil end that is easily connected after being inserted into the stator slot 14, so that the workability of the stator is improved. Will improve.

(2C) According to the second embodiment of the present invention, in any one of the configurations of the (1A) term in the first embodiment and the (2A) term and the (2B) term in the second embodiment, the coil Since the connection part 16 of each coil segment 15 constituting the assembly 12 has a flat part at least in part, in a rotating electrical machine having a coil of distributed armature winding, the manufacturing operation is simplified, In addition, an improvement in the space factor in the stator slot 14 and an increase in the number of coil turns in the armature winding can be realized, and a rotating electrical machine capable of easily connecting the coil segments 15 can be obtained.
That is, when the coil assembly 12 is manufactured, if the connecting portion 16 that connects each coil segment 15 is flat, the working conditions for connecting the coil segment 15 are stable and can be easily connected. , Workability is improved.

(2D) According to the second embodiment of the present invention, after the coil segment 15 that is wound a plurality of times in one row is formed in the configuration of the item (1B) in the first embodiment, this coil segment Since the coil assembly 12 is configured by connecting a plurality of the coil assemblies 12, in the rotating electrical machine having the distributedly wound armature winding coils, the manufacturing operation is simplified and the stator slots 14 are arranged. Of the rotating electrical machine that can improve the space factor of the coil and increase the number of coil turns in the armature winding, reduce the number of necessary coil assemblies 12, and simplify the interconnection work of the coil assemblies 12. A manufacturing method can be obtained.
That is, by configuring the coil assembly 12 with a plurality of coil segments 15, the coil assembly 12 can be wound in more layers. In addition, since the number of coil assemblies 12 inserted into the stator slot 14 can be reduced in order to achieve the same number of turns, it is not necessary to connect the coil assemblies 12 to each other, thereby facilitating the interconnection work of the coil assemblies 12. be able to.

(2E) According to the second embodiment of the present invention, in any one of the configurations of the (1B) term in the first embodiment and the (2C) term and the (2D) term in the second embodiment, the coil In the assembly 12, first, the connection portions 16 provided on the inner peripheral side of the coil segment 15 are preferentially connected to each other, and then the connection portions provided on the outer peripheral side of the coil segment 15 are connected. The coil assembly 12 is configured by first connecting the connection portions 16 provided at the end portions on the inner peripheral side of the coil segment 15 with priority. In a rotating electrical machine equipped with a child winding coil, it is possible to simplify the manufacturing work, improve the space factor in the stator slot 14 and increase the number of coil turns in the armature winding. Together, it is possible to obtain a manufacturing method of a rotating electric machine can be easily connecting work of the coil assembly 12 together.
That is, since the connection point for connecting the coil assemblies 12 is formed on the outer periphery by configuring the coil assembly 12 using the end points on the inner peripheral side of the coil segment 15, the connection between the coil assemblies 12 is easy. Therefore, workability is improved.

(2F) According to the second embodiment of the present invention, the coil assembly is configured in the configuration (1B) in the first embodiment or the configuration (2D) or the (2E) in the second embodiment. Since the coil segment is manufactured so that the connection portion 16 of the coil segment 15 is located at the same position when the coil segments 15 are overlapped, a coil of distributed armature winding is provided. In the rotating electric machine, the manufacturing work can be simplified, the space factor in the stator slot 14 can be improved, the number of coil turns in the armature winding can be increased, and the coil segment 15 can be easily connected. A manufacturing method of a rotating electrical machine can be obtained.
That is, by winding the coil segment 15 so that the connection portions 16 of the coil segment 15 for configuring the coil assembly 12 are at the same position, alignment at the time of connection is facilitated, and workability is improved.

Embodiment 3 FIG.
A third embodiment of the present invention will be described with reference to FIG. FIG. 7 is a perspective view of the coil assembly 12 according to the third embodiment of the present invention.
In the third embodiment, the configuration other than the specific configuration described here has the same configuration contents as the configuration in the first embodiment or the second embodiment described above, and exhibits the same operation. It is. In the drawings, the same reference numerals indicate the same or corresponding parts.

  As shown in FIG. 7, a rectangular coil is used as a coil material constituting the coil assembly 12 and the coil segment 15. By using a flat coil, the coil can be wound more stably than when a round coil is used, so that the shapes of the coil assembly 12 and the coil segment 15 are stabilized. Further, when the coil assembly 12 is manufactured by superimposing a plurality of coil segments 15, each coil segment 15 can be stably positioned, and the workability of the coil assembly 12 is improved. Furthermore, the rectangular coil can be shaped to better fit the stator slot 14, the space factor of the stator 1 can be improved, and the output of the rotating electrical machine can be improved.

(3A) According to the third embodiment of the present invention, in any one of the configurations from the (1A) term in the first embodiment and the (2C) term to the (2E) term in the second embodiment, Since the coil material constituting the coil assembly 12 and the coil segment 15 is a rectangular wire, the manufacturing operation is simplified and fixed in the rotating electric machine having the coils of the distributed armature winding. An improvement in the space factor in the child slot 14 and an increase in the number of coil turns in the armature winding can be realized, the manufacturing work of the coil assembly 12 and the coil segment 15 can be facilitated, and the space factor of the stator 1 can be increased. Thus, a rotating electrical machine capable of improving performance can be obtained.
That is, by using a flat wire coil, the coil assembly 12 and the coil segment 15 can be easily manufactured, and the workability is improved. Further, by using a rectangular coil that matches the shape of the stator slot 14 in the stator 1, the space factor of the stator 1 can be improved and the performance of the rotating electrical machine can be improved.

Embodiment 4 FIG.
A fourth embodiment of the present invention will be described with reference to FIG. FIG. 8 is a perspective view of the main part of the coil assembly 12 according to the fourth embodiment.
In the fourth embodiment, the configuration other than the specific configuration described here has the same configuration contents as the configuration in any of the first to third embodiments described above, and is similar. It has an effect. In the drawings, the same reference numerals indicate the same or corresponding parts.

  In the fourth embodiment, as shown in FIG. 8, a plurality of coil assemblies 12 are arranged in combination before being inserted into the stator slot 14 and are connected via a connecting portion 17 so as to constitute an armature winding. Connected. Thereafter, the combined coil assembly 12 is inserted into the stator slot 14.

  The effect of the fourth embodiment is that the coil assembly 12 is pre-combined and connected before being inserted into the stator slot 14 so that the coil assembly 12 can be connected more stably than the connection after the insertion. The process can be simplified.

(4A) According to the fourth embodiment of the present invention, in any one of the configurations from the (1B) term in the first embodiment and the (2C) term to the (2E) term in the second embodiment, Since a plurality of coil assemblies 12 are connected in advance through a connection portion 17 before insertion into the stator slot 14 to form an armature winding, distributed armature winding coils In the rotating electrical machine having the above, the manufacturing work can be simplified, the space factor in the stator slot 14 can be improved, the number of coil turns in the armature winding can be increased, and the connection work of the coil assembly 12 can be stabilized. Thus, a method for manufacturing a rotating electrical machine can be obtained.
That is, by connecting a plurality of coil assemblies 12 in advance and inserting an armature winding before inserting into the stator slot 14, the coil assembly 12 is more stable than connecting near the coil end of the stator 1. Can be connected, and the process can be simplified.

Embodiment 5. FIG.
A fifth embodiment of the present invention will be described with reference to FIG. FIG. 9 is a perspective view showing the procedure for manufacturing the coil assembly according to the fifth embodiment of the present invention.
In the fifth embodiment, the configuration other than the specific configuration described here has the same configuration contents as the configuration in any of the first to fourth embodiments described above, and is similar. It has an effect. In the drawings, the same reference numerals indicate the same or corresponding parts.

  In the fifth embodiment, as shown in FIG. 9A, the wound coil assembly 12 is preliminarily inserted into the inner layer side and the outer layer side of the stator slot 14 in the coil assembly 12. The insertion portions 12a and 12b to the two stator slots 14 are gripped by a fixture (not shown), and the coil assembly 12 is twisted in the direction of the arrow TD in the drawing to perform twist processing. ). Thereafter, each coil assembly 12 is inserted into the stator slot 14. In other words, the linearly extending portion 12a on the left side of the drawing extending in the drawing is accommodated so as to pass through the outer peripheral side of the stator slot 14, and the right side of the drawing shown in FIG. The linearly extending portion 12b is accommodated so as to pass through the inner peripheral side of the stator slot 14 (see FIGS. 2 and 5).

  When the coil assembly 12 is composed of a plurality of coil segments 15 (see FIG. 6 and FIG. 7), a plurality of coil segments 15 wound on the same plane are connected and then fixed in pairs to be inserted. The child slot 14 is twisted so as to be on the outer layer side and the inner layer side, and then inserted into a predetermined stator slot 14.

  As described above, by inserting the coil assembly 12 into the stator slot 14 so as to be inserted into the inner and outer layers in advance, the coil assembly 12 can be easily inserted. It is possible to reduce the defect rate such as coil coating damage in the coil assembly 12.

(5A) According to the fifth embodiment of the present invention, the (1B) term in the first embodiment, the (2D) term to the (2F) term in the second embodiment, and the (( 4A), the coil assembly 12 is wound a predetermined number of times and twisted so as to be on the outer layer side and the inner layer side in the pair of stator slots 14 to be inserted. In the rotating electric machine having the distributed armature winding coil, the manufacturing operation is simplified and the space factor in the stator slot 14 is reduced. Improvement and increase in the number of coil turns in the armature winding can be realized, and the coil assembly 12 can be easily damaged without being inserted into the stator slot 14. Preparation of a rotating electric machine capable can be obtained.
That is, by deforming the coil assembly 12 into the shape after insertion into the stator slot 14 in advance, it is possible to reduce problems such as damage to the coating of the coil in the coil assembly 12 at the time of insertion.

(5B) According to Embodiment 5 of the present invention, the (1B) term in Embodiment 1, the (2D) term to (2F) term in Embodiment 2, and the ( 4A), the coil assembly 12 is connected to the outer layer side and the inner layer side of the stator slot 14 forming a pair to be inserted after connecting a plurality of coil segments 15 wound on the same plane. And then inserted into a predetermined stator slot 14, so that the manufacturing operation can be simplified and fixed in a rotating electrical machine having distributed winding armature winding coils. An improvement in the space factor in the child slot 14 and an increase in the number of coil turns in the armature winding can be realized, and reliability in the manufacturing process of the coil assembly 12 can be realized. Improvement can, moreover, it is possible to obtain a manufacturing method of a rotating electric machine capable of performing insertion into the stator slots 14 of the coil assembly 12 with ease without breakage of the coil assembly 12.
That is, by forming the coil assembly 12 with a plurality of coil segments 15, the manufacturing process of the coil assembly 12 can be simplified, and the reliability can be improved. Moreover, after connecting the coil segment 15 to form the coil assembly 12, it is possible to reduce problems such as damage to the coating of the coil in the coil assembly 12 at the time of insertion by deforming the coil segment 15 into the shape inserted into the stator slot 14.

Embodiment 6 FIG.
A sixth embodiment of the present invention will be described with reference to FIG. FIG. 10 is a perspective view showing a configuration of a winding jig for manufacturing a coil assembly or a coil segment in the sixth embodiment.
In the sixth embodiment, the configuration other than the specific configuration described here has the same configuration contents as the configuration in any of the first to fifth embodiments described above, and is similar. It has an effect. In the drawings, the same reference numerals indicate the same or corresponding parts.

  In the sixth embodiment, the coil assembly 12 or the coil segment 15 constituting the coil assembly 12 is manufactured using a winding jig 30 as shown in FIG. The winding jig 30 includes a winding jig shaft 31 for winding the coil assembly 12 or a coil of the coil assembly 12, and a winding jig slit 32 provided on the winding jig shaft 31 for fixing the coil tip, and the coil assembly 12 or the coil. It is composed of two guides 33 for positioning the coil of the segment 15.

The production procedure will be described. First, the coil tip of the coil assembly 12 or the coil segment 15 is inserted into the winding jig slit 32 between the guides 33, and the tip is fixed. At this time, the dimension between the guides 33 is made slightly larger than the coil wire diameter. Next, the coil assembly 12 or the coil segment 15 is wound by rotating the winding jig shaft 31 and winding the coil of the coil assembly 12 or the coil segment 15 in the direction WD. After winding, the coil end portion of the coil assembly 12 or the coil segment 15 is cut, the completed coil segment 15 is gripped by both guides 33, and the coil assembly 12 or the coil segment 15 is removed from the winding jig shaft 31 so as not to collapse. Remove.
By winding the coil assembly 12 or the coil segment 15 using such a winding jig 30, it can be manufactured more easily than winding with a nozzle. Further, in the configuration of the fifth embodiment shown in FIG. 9, there is only one portion to be wound. However, by installing a plurality of guides on the winding jig shaft 31, a plurality of coil assemblies 12 or coil segments at a time. 15 can be manufactured. Further, the vicinity of the tip of the winding jig shaft 31 may be tapered so that the completed coil assembly 12 or the coil segment 15 can be easily removed.

(6A) According to the sixth embodiment of the present invention, the (1B) term in the first embodiment and the (2D) to the (2F) terms in the second embodiment and the (4A) in the fourth embodiment And the coil assembly 12 or the coil segment 15 to be wound is manufactured by using a dedicated winding jig 30. Therefore, in a rotating electrical machine equipped with distributed armature winding coils, the manufacturing work is simplified, and the space factor in the stator slot 14 is improved and the number of coil turns in the armature winding is increased. It is possible to obtain a method of manufacturing a rotating electrical machine that can be realized and can easily obtain the coil assembly 12 or the coil segment 15 having the same shape.
That is, by manufacturing the coil assembly 12 or the coil segment 15 with the winding jig 30, the coil assembly 12 or the coil segment having the same shape can be obtained at a low cost.

Embodiment 7 FIG.
Embodiment 7 according to the present invention will be described.
In the seventh embodiment, the configuration other than the specific configuration described here has the same configuration contents as the configuration in any of the first to sixth embodiments described above, and is similar. It has an effect.

In Embodiment 7 of the present invention, the stator 1 of the rotating electrical machine forms a linear stator core structure (not shown) for constituting the stator core 11 (see FIGS. 2 and 5). After inserting the coil assembly 12 into the stator slot 14 of the stator core structure, the stator core structure is rounded to form a cylinder having a cylindrical back yoke 11a (see FIGS. 2 and 5). The stator 1 having the stator core 11 having the shape is manufactured.
As described above, when the stator 1 is manufactured, the linear stator core structure has a wider slot opening than the cylindrical stator core 11, and thus the coil assembly 12 is added to the linear stator core structure. , The coil assembly 12 can be adapted to the width of the stator slot 14, and as a result, the space factor of the stator 1 can be improved. Further, when the coil assembly 12 is inserted, damage to the coil coating of the coil assembly 12 due to contact between the coil assembly 12 and the teeth 13 can be avoided, and defects of the stator 1 can be reduced.

(7A) According to the seventh embodiment of the present invention, the (1B) term in the first embodiment, the (2D) term to the (2F) term in the second embodiment, and the ( 4A) and the configuration in any one of the items (5A) in Embodiment 5 and (6A) in Embodiment 6, the stator 1 having the stator core 11 has the coil assembly 12 in which the coil assembly 12 is the stator. Since it is manufactured by being rounded after being inserted into the stator slot 14 in the linear stator core structure for manufacturing the core 11, the armature winding coil with distributed winding is provided. In the rotating electric machine, the manufacturing work can be simplified, and the space factor in the stator slot 14 can be improved and the number of coil turns in the armature winding can be increased. Both can be a coil assembly 12 is adapted to the stator slot 14 of the stator core 11 to obtain a production method of a rotating electric machine capable of improving the space factor of the stator 1.
That is, in the linear stator core structure, since the slot opening is wider than the cylindrical stator core 11, the coil assembly 12 is inserted into the linear stator core structure, and the stator core 11 is inserted. By manufacturing, the coil assembly 12 can be adapted to the width of the stator slot 14, and as a result, the space factor of the stator 1 can be improved.

It is a longitudinal cross-sectional view which shows the structure of the rotary electric machine in connection with Embodiment 1 by this invention. It is a principal part perspective view which shows the structure of the stator in connection with Embodiment 1 by this invention. It is a principal part perspective view which shows the insertion position of the coil assembly of the stator in connection with Embodiment 1 by this invention. It is a perspective view which shows the structure of the coil assembly in connection with Embodiment 1 by this invention. It is a principal part perspective view which shows the structure of the stator in connection with Embodiment 2 by this invention. It is a perspective view which shows the structure of the coil assembly in connection with Embodiment 2 by this invention. It is a perspective view which shows the structure of the coil assembly in connection with Embodiment 3 by this invention. It is a principal part expanded view which shows the structure of the stator core in connection with Embodiment 4 by this invention. It is a perspective view which shows the manufacture procedure of the coil assembly in connection with Embodiment 5 by this invention. It is a principal part perspective view which shows the structure of the winding jig | tool for manufacturing the coil assembly or coil segment in connection with Embodiment 6 by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stator, 2 Rotor, 3 Front bracket, 4 Rear bracket, 11 Stator core, 12 Coil segment, 13 Teeth, 14 Stator slot, 15 Coil segment, 16 Coil segment connection part, 17 Coil assembly connection part, 21 Field coil, 22, 23 pole core, 24 rotating shaft, 30 winding jig, 31 winding jig shaft, 32 winding jig slit, 33 guide.

Claims (14)

  A core having a plurality of teeth and a slot formed between the teeth and wound with an armature winding, and a plurality of coils wound around a pair of slots and forming the armature winding. In a rotating electrical machine having an armature winding having a distributed winding structure, the coil assembly is inserted into a pair of slots, and each coil assembly is inserted to the outer layer side in one slot and in the other slot A rotating electrical machine characterized in that each coil assembly is inserted into the inner layer side and has substantially the same shape.   2. The rotating electrical machine according to claim 1, wherein the coil assembly is configured by connecting a plurality of coil segments wound in a row a plurality of times.   The rotating electrical machine according to claim 2, wherein the coil assembly includes an even number of coil segments.   The rotating electrical machine according to claim 2 or 3, wherein a connecting portion of each coil segment constituting the coil assembly has a flat portion in at least a part thereof.   The rotating electrical machine according to any one of claims 1 to 4, wherein a coil material constituting the coil assembly and the coil segment is a flat wire.   A plurality of teeth formed between a plurality of teeth and a core having a slot around which the armature winding is wound, and a plurality of coils wound in a pair of slots straddling the teeth and constituting the armature winding In manufacturing a rotary electric machine having an assembly and the armature winding having a distributed winding structure, the coil assemblies are formed to have substantially the same shape, and each coil assembly has an outer layer in one slot in a pair of inserted slots. A method for manufacturing a rotating electrical machine, wherein the slot is inserted into the inner layer side in the other slot.   7. The method of manufacturing a rotating electrical machine according to claim 6, wherein the coil assembly is formed by connecting a plurality of coil segments after forming a coil segment that is wound a plurality of times in one row.   The rotating electrical machine according to claim 7, wherein the coil assembly is configured by first preferentially connecting ends on the inner peripheral side of the coil segment.   The method for manufacturing a rotating electrical machine according to any one of claims 6 to 8, wherein an armature winding is configured by connecting a plurality of coil assemblies in advance before insertion into the slot.   7. The coil assembly according to claim 6, wherein the coil assembly is wound a predetermined number of times, twisted so as to be on the inner layer side and the outer layer side in a pair of slots to be inserted, and then inserted into the predetermined slot. The manufacturing method of the rotary electric machine in any one of Claims 8-8.   The coil assembly is formed by connecting a plurality of coil segments wound on the same plane, then twisting them so as to be on the inner layer side and the outer layer side in a pair of slots to be inserted, and then inserting them into a predetermined slot The method for manufacturing a rotating electrical machine according to any one of claims 6 to 8, wherein the method is provided.   12. The method of manufacturing a rotating electrical machine according to claim 11, wherein the coil segment is manufactured such that a connection portion of the coil segment constituting the coil assembly is located at the same position when the coil segments are overlapped. .   The method of manufacturing a rotating electrical machine according to any one of claims 10 to 12, wherein the coil assembly or the coil segment to be wound is manufactured using a dedicated winding jig.   The stator having the core is manufactured by being rounded after the coil assembly is inserted into a slot of a linear stator core structure for constituting the stator core. The manufacturing method of the rotary electric machine in any one of Claim 13.

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