JP5783943B2 - Rotating electric machine - Google Patents

Description

  The present invention relates to a rotating electrical machine, and more particularly to a rotating electrical machine that improves the space factor of a winding while suppressing winding disturbance and collapse.

  In the conventional rotating electric machine, the position of the first-layer wire on the first layer is determined by winding the dummy coil by one turn around the main body at the end of the main body. Thereby, the winding disorder and winding collapse of the winding are suppressed (for example, refer to Patent Document 1).

  Further, in a conventional rotating electrical machine, an insulator formed of insulating resin, rubber, or the like is provided along the entire core back side of the teeth, so that the wire is wound without a gap. Thereby, collapse of the winding is suppressed (for example, refer to Patent Document 2).

JP 2009-148084 A (paragraph [0036] and FIG. 3) JP 2008-61368 A (paragraph [0018] and FIG. 3)

By the way, in the conventional rotary electric machine (refer patent document 1), a wire is wound according to a dummy coil. Therefore, if the wire diameter of the dummy coil and the wire diameter of the wire match or are similar, there will be no large gap.
On the other hand, if the wire diameter of the dummy coil and the wire diameter of the wire are significantly different, there is a possibility that a gap is generated and a large gap is generated.
That is, depending on the size of the wire diameter, which is the wire diameter of the wire, there is a possibility that a useless gap is generated between the wires at the first layer folding point. In such a case, there is a risk that the dummy coil may cause winding disturbance or collapse.
For this reason, if the dummy coil is not designed according to the wire diameter, the useless gap between the wires cannot be reduced.
Further, even if the dummy coil is designed in accordance with the wire diameter, it has not been possible to wind the dummy coil without causing a useless gap between the wires.
Therefore, the conventional rotating electric machine has a problem that it is not possible to suppress winding disturbance or collapse.

Further, in the conventional rotating electric machine (see Patent Document 2), since the insulator is provided along the entire inner peripheral side surface of the core back of the teeth, it can suppress the winding collapse, but the space of the winding itself is increased. The rate drops.
Therefore, the conventional rotating electrical machine has a problem that the space factor of the winding, which is the ratio of the conductor in the cross section of the winding, cannot be improved.

  In other words, the conventional rotating electrical machines (Patent Documents 1 and 2) have a problem that the space factor of the winding cannot be improved while suppressing the winding disorder and collapse of the winding.

  The present invention has been made in order to solve the above-described problems, and provides a rotating electrical machine capable of improving the space factor of a winding while suppressing winding disturbance and winding collapse. It is for the purpose.

The rotating electrical machine of the present invention includes a rotor, a stator having a stator core, an insulator attached to the stator core and formed of an insulating member, and provided integrally with the insulator, and deformed by external pressure. A dummy coil and a wire wound around the teeth of the stator core, and the dummy coil is formed between the teeth and a core back provided substantially perpendicular to the teeth. The wire arranged at the corner and wound in the first layer of the winding formed in the stator core is adjacent to the dummy coil, and the winding formed in the stator core. The wire wound in the first layer of the second layer pushes the wire wound at the end of the first layer of the winding into a gap formed between the insulator and the dummy coil. Are arranged in a state I, the stator iron core, and the teeth, and the core back, the tip and formed elements stator core with said teeth has been formed by a plurality connecting said insulator Is attached to each of the element stator cores, and is formed by being divided on the core back side and the tip end side of the teeth, and has an elastic body in which the divided pieces are attracted to each other. It is.

  The present invention has an effect that the space factor of the winding can be improved while suppressing the winding disturbance and winding collapse of the winding by providing the insulator with a dummy coil that can be deformed by an external pressure.

It is the schematic of the electric motor 61 in Embodiment 1 of this invention. It is a figure which shows schematic structure of the stator assembly 56 mounted in the compressor in Embodiment 1 of this invention. It is a perspective view of the stator core 1 (strip shape) in Embodiment 1 of this invention. It is a figure which shows the shape of the element stator core 53 in the state in which the insulator in Embodiment 1 of this invention was formed. It is a figure which shows schematic structure of the winding machine 40 which winds the wire 12 to the stator core 1 in Embodiment 1 of this invention. It is a figure which shows the shape of the U side insulator 2 in Embodiment 1 of this invention. It is a figure explaining the arrangement configuration of the winding coil 16 after winding the wire 12 around the insulator in Embodiment 1 of this invention. It is a flowchart explaining operation | movement of the winding machine 40 in Embodiment 1 of this invention. It is a figure which shows the state after dividing the insulator in Embodiment 2 of this invention into 2, and adjusting the alignment width of the coil | winding 6 of the 1st layer according to the wire diameter of the wire 12. FIG. It is a figure which shows the state which wound the wire 12 after arrange | positioning the elastically deformable rubber sheet in Embodiment 3 of this invention on the insulator side surface.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Embodiment 1 FIG.
FIG. 1 is a schematic diagram of an electric motor 61 according to Embodiment 1 of the present invention. FIG. 2 is a diagram showing a schematic configuration of the stator assembly 56 mounted on the compressor according to Embodiment 1 of the present invention. FIG. 3 is a perspective view of stator core 1 (strip shape) according to Embodiment 1 of the present invention. FIG. 4 is a diagram showing the shape of the element stator core 53 in a state where the insulator according to Embodiment 1 of the present invention is formed. FIG. 5 is a diagram showing a schematic configuration of a winding machine 40 that winds the wire 12 around the stator core 1 according to the first embodiment of the present invention. FIG. 6 is a diagram showing the shape of the U-side insulator 2 in Embodiment 1 of the present invention. FIG. 7 is a diagram for explaining an arrangement configuration of the winding coil 16 after the wire 12 is wound around the insulator in the first embodiment of the present invention. FIG. 8 is a flowchart for explaining the operation of the winding machine 40 according to the first embodiment of the present invention.

As shown in FIG. 1, the electric motor 61 includes a rotor 52, a bracket 54, a mold stator 51, and the like.
The mold stator 51 is obtained by molding a stator assembly 56 described later. The stator assembly 56 is obtained by assembling the connection component 55 and the like to the stator 81.
The stator 81 includes the rotor 52 via a predetermined air gap in the radial direction. The stator 52 has a stator core 1 described later, and supplies a rotating magnetic field to the rotor 52.
Here, although an example in which the stator assembly 56 is mounted on the electric motor 61 has been described, the present invention is not limited to this. The stator assembly 56 is mounted on, for example, a compressor that is one of the components of an air conditioner.

FIG. 2A is a plan view of the stator assembly 56. FIG. 2B is a front view of the stator assembly 56. As shown in FIGS. 2A and 2B, the stator assembly 56 includes a connection component 55, a lead wire 5, a jumper wire 7, a stator 81, and the like.
The stator 81 includes a stator winding 30 in which a U-side insulator 2 and an L-side insulator 3 are sandwiched from both sides of the stator core 1 and a wire 12 described later is wound to form a plurality of windings 6. . The stator 81 generates a rotating magnetic field by supplying a current to the stator winding 30 by a power supply unit (not shown), and supplies the generated rotating magnetic field to the rotor 52 shown in FIG. Thereby, the rotor 52 rotates.

The jumper wire 7 is connected to the magmate 4 embedded in the cavity portion of the U-side insulator 2. The magmate 4 is for electrically connecting a tooth 1a, which is one of the constituent elements of the stator core 1 to be described later, and a jumper wire 7. Therefore, the teeth 1a and each phase are electrically connected by the jumper wire 7.
Each phase, specifically each U-phase, V-phase, and W-phase, is provided with a lead wire 5 for supplying electricity. One end of each lead wire 5 is aggregated and connected by a connection component 55. Each lead wire 5 has the other end connected to each phase of the stator winding 30.
Note that the U-side insulator 2 and the L-side insulator 3 are formed of insulating members.

As shown in FIG. 3, the stator core 1 has a plurality of teeth 1a. The band-shaped stator core 1 is formed by, for example, laminating electromagnetic steel sheets having a thickness of about 0.1 to 0.7 mm in a band shape with a press or the like and then laminating them by caulking, welding, adhesion, or the like.
A core back 1b is formed at one end of the tooth 1a, and a tooth tip 1c is formed at the other end of the tooth 1a. That is, as will be described later, the teeth 1a are formed so as to stand on the core back 1b and the teeth tip 1c.

Specifically, the teeth 1a are formed to extend substantially perpendicularly from the core back 1b, and the combined shape of each of the teeth 1a and the core back 1b is formed in a substantially T shape in plan view. That is, the core back 1b is provided substantially vertically with respect to the teeth 1a.
The core back 1b is formed with a predetermined curvature.
Teeth tip 1c is provided substantially perpendicular to teeth 1a. The shape of the tooth tip 1c is formed in a substantially square shape in plan view. The teeth tip 1c is partially exposed to the stator core 1 after being insulated by the U-side insulator 2, the L-side insulator 3, the insulating film 8, and the like which will be described later in detail. Yes.

An element stator core 53 is formed by the teeth 1a, the core back 1b, and the teeth tip 1c. The element stator cores 53 are connected to each other by a thin connecting portion 1d.
The distance between the rotor 52 shown in FIG. 1 and the stator 81 shown in FIG. 2 needs to be a gap whose radial dimension is, for example, 1 mm or less. For this reason, the tooth tip 1c is not insulated.

In addition, since the core back 1b is connected to the adjacent teeth 1a by the thin connecting portion 1d, the strip-shaped stator core 1 can be freely bent backward and forward.
A core end face 1e is formed on the outer end face of the core back 1b of the teeth 1a on both sides of the strip-shaped stator core 1.
After the winding, the stator core 1 is bent forward so that the teeth 1a are inside, and then the core end surfaces 1e are brought into contact with each other. In this state, processing such as welding is performed, and the stator core 1 becomes ring-shaped.

FIG. 4A is a front view of the element stator core 53. FIG. 4B is a plan view of the element stator core 53. FIG. 4C is a right side view of the element stator core 53.
As shown in FIGS. 4 (a), 4 (b), and 4 (c), an insulating film 8 is provided on the side surface of the stator core 1 sandwiched between the U-side insulator 2 and the L-side insulator 3. Is provided. That is, the insulating film 8 is provided between the stator core 1 and the winding 6 shown in FIG. 2A, and electrically insulates the stator core 1 and the winding 6 from each other.
The U-side insulator 2 and the L-side insulator 3 are provided between the inner peripheral side surface of the core back 1b of the element stator core 53 and the winding 6, and the core back 1b side of the element stator core 53; The winding 6 is electrically insulated.
Here, the inner peripheral side surface of the core back 1b means a side surface closer to the rotor 52 when the stator core 1 is ring-shaped and the rotor 52 is included. On the other hand, in the following description, the inner peripheral side surface of the tooth tip 1c means a side surface far from the rotor 52.

Here, although the insulating film 8 has been described as means for insulating the stator core 1 and the winding 6, the material and the like are not particularly limited as long as they are insulated. For example, it may be an insulating paper or an insulating fiber material.
In the following description, the U-side insulator 2, the L-side insulator 3, and the insulating film 8 are collectively referred to as an insulator.

Elastic dummy coils 9 are provided at the corners formed by the teeth 1a and the core back 1b.
Although not shown, the elastic dummy coil 9 may be provided at a corner formed by the tooth 1a and the tooth tip 1c.
Details of the elastic dummy coil 9 will be described later.

  FIG. 5A is a front view of the winding machine 40. FIG. 5B is a right side view of the winding machine 40 after the flyer 11 in FIG. 5A is rotated by a predetermined angle.

As shown in FIGS. 5A and 5B, the stator core 1 is fixed by a chuck device 13 that fixes a workpiece. The winding machine 40 includes a flyer 11, a support member 72 for the flyer 11, and the like. The flyer 11 is rotatable about a vertical line that is the central axis of the support member 72 as a rotation axis. Further, the flyer 11 is slidable in the X-axis direction shown in FIG. The winding machine 40 passes the wire 12 through the inner diameter of the empty shaft provided in the support member 72. The wire 12 is passed through a pulley 73 provided in the flyer 11. The wire 12 guided through the pulley 73 is supplied from the nozzle 10 provided in the flyer 11 to the teeth 1a.
As shown in FIGS. 5A and 5B, the flyer 11 moves in the X-axis direction at every angle θ. As a result of such an operation, a cross point of the wire 12 is formed on one side surface of the tooth 1a, and the wire 12 is wound in a straight shape on the other side surface of the tooth 1. Therefore, the wire 12 is wound in an aligned winding.
The angle θ is not particularly limited.

At this time, the elastic dummy coil not shown in FIG. 5 determines the position of the wire 12 in the first turn of each winding 6 shown in FIG.
Specifically, at the start of the first winding, the winding machine 40 starts an operation of winding the wire 12 around the teeth 1a from the U-side insulator 2 where the elastic dummy coil 9 is not provided. Next, the winding machine 40 rotates the flyer 11 by 180 °. In this state, the wire 12 has reached the L-side insulator 3. The L-side insulator 3 is provided with elastic dummy coils 9 on both sides. Therefore, a cross point of the wire 12 is formed on the winding start side.

  FIG. 6A is a front view of the U-side insulator 2. FIG. 6B is a plan view of the U-side insulator 2. FIG. 6C is a bottom view of the U-side insulator 2. FIG. 6D is a left side view of the U-side insulator 2.

The elastic dummy coil 9 described with reference to FIGS. 4B and 4C includes a long-side elastic dummy coil 14 and a short-side elastic dummy coil as shown in FIGS. 6B and 6C. 15.
The long side elastic dummy coil 14 is formed of a member that can be deformed by an external pressure. Specifically, the long-side elastic dummy coil 14 is a member formed of a material that is elastically deformed or plastically deformed, and is formed of, for example, a spring structure such as a leaf spring or a rubber material.
The short side elastic dummy coil 15 is formed of a member that can be deformed by an external pressure. Specifically, the short-side elastic dummy coil 15 is a member formed of a material that is elastically deformed or plastically deformed, and is formed of, for example, a spring structure such as a leaf spring or a rubber material.

  Although details will be described later, when the elastic dummy coil 9 is pressed by the wire 12, its shape is deformed in accordance with the wire diameter of the wire 12. Thereby, the arrangement width of the first-layer wires 12 of the winding 6 shown in FIG. 2 is increased.

Further, the elastic dummy coil 9 is provided integrally with the U-side insulator 2. For example, the elastic dummy coil 9 is one in which the U-side insulator 2 and the elastic dummy coil 9 are integrally formed by inserting a thermoplastic resin or the like into an injection mold.
When the elastic dummy coil 9 is provided integrally with the L-side insulator 3, for example, the elastic dummy coil 9 is inserted into the injection mold by inserting a thermoplastic resin or the like into the L-side insulator 3. And the elastic dummy coil 9 are integrally formed.
When the elastic dummy coil 9 is provided integrally with the insulating film 8, for example, the elastic dummy coil 9 is elastic with the insulating film 8 by inserting a thermoplastic resin or the like into an injection mold. The dummy coil 9 is integrally formed.
In addition, although injection molding was demonstrated as an example of integral molding here, it is not limited to this. For example, the U-side insulator 2 and the elastic dummy coil 9 may be integrally formed by welding.
The elastic dummy coil 9 corresponds to the dummy coil in the present invention.

As shown in FIG. 7, the wires 12 are numbered 1, 2, 3,... This means, for example, that the wire 12 named “1” is wound around the first round. The same definition is applied to the wires 12 with other numbers. Therefore, for example, it is assumed that the wire 12 named “10” is wound around the 10th turn. The winding coil 16 means a state in the middle of forming the winding 6 by winding the wire 12 a predetermined number of times.
In addition, although the wire 12 to the 45th round is shown in figure, it is not limited to this.

  The elastic dummy coil 9 is disposed at a corner formed by the teeth 1a and the core back 1b. The first-round wire 12 of the first layer of the winding coil 16 is disposed adjacent to the short-side elastic dummy coil 15. The wire 12 in the first turn of the winding coil 16 to the wire 12 in the 12th turn of the winding coil 16 are arranged at the same arrangement position. That is, the first round wire 12 to the twelfth round wire 12 are positioned in the same row along the side surface of the tooth 1a, and the first round wire 12 to the twelfth round wire 12 are wound. A first layer of the coil 16 is formed.

The wire 12 on the 13th turn of the second layer of the winding coil 16 is disposed adjacent to the wire 12 on the 12th turn of the first layer of the winding coil 16. For this reason, the wire 12 of the 13th turn is in a state of pressing the wire 12 of the 12th turn. Therefore, the wire 12 in the twelfth turn is in a state of pressing the wire 12 in the eleventh turn.
Similarly, the following state is obtained.
The eleventh wire 12 is in a state of pressurizing the tenth wire 12.
The wire 12 on the tenth turn is in a state of pressing the wire 12 on the ninth turn.
The wire 12 in the ninth turn is in a state of pressing the wire 12 in the eighth turn.
The eighth round wire 12 is in a state of pressurizing the seventh round wire 12.
The wire 12 on the seventh turn is in a state of pressing the wire 12 on the sixth turn.
The wire 12 in the sixth turn is in a state of pressing the wire 12 in the fifth turn.
The wire 12 in the fifth turn is in a state of pressing the wire 12 in the fourth turn.
The wire 12 in the fourth turn is in a state of pressing the wire 12 in the third turn.
The third round wire 12 is in a state of pressing the second round wire 12.
The second round wire 12 is in a state of pressurizing the first round wire 12.
The wire 12 in the first round is in a state of pressing the short side elastic dummy coil 15, that is, the elastic dummy coil 9.

In this state, the wire 12 is, for example, a coated conductive wire coated with a copper wire or the like, so that the shape is not deformed by pressurization of the wire 12 on the 13th round. Moreover, since the element stator core 53 is formed from an electromagnetic steel plate, the shape is not deformed by pressurization of the wire 12 on the thirteenth circumference.
Therefore, the pressure applied by the 13th wire 12 is absorbed by the elastic dummy coil 9 which can be deformed. Thereby, the first layer of the winding coil 16 is aligned in a bowl shape.
That is, the arrangement of the first-layer wires 12 of the winding coil 16 is stable. In addition, since the arrangement of the wire 12 in the first layer of the winding coil 16 is stable, the arrangement of the wires 12 in the second and subsequent layers of the winding coil 16 is also stable.
For example, the 13th-round wire 12 to the 25th-round wire 12 forming the second layer of the winding coil 16 are aligned in a bowl shape. In addition, for example, the 26th turn wire 12 to the 39th turn wire 12 forming the third layer of the winding coil 16 are arranged in a bowl shape.

Next, the process leading to the arrangement configuration of the winding coil 16 as shown in FIG. 7 will be described.
First, the U-side insulator 2, the L-side insulator 3, and the insulating film 8 are provided on the stator core 1. An elastic dummy coil 9 is integrally formed on the U-side insulator 2. Therefore, when the U-side insulator 2 is provided in the stator core 1, the elastic dummy coil 9 is provided at the same time.

Here, the operation of the winding machine 40 will be described with reference to FIG.
(Step S11)
The winding machine 40 starts winding the wire 12 around the insulator. At this time, the winding machine 40 rotates the flyer 11 and supplies the wire 12 from the nozzle 10 to the teeth 1a.

(Step S12)
The winding machine 40 arranges the wire 12 of the first turn of the winding coil 16 in a state adjacent to the side surface of the elastic dummy coil 9.

(Step S13)
The winding machine 40 winds the wire 12 toward the tooth tip 1c side.
Specifically, the winding machine 40 winds the wires 12 in order from the second round of the wire 12 to the twelfth round of the wire 12 toward the teeth tip 1c side.

(Step S14)
The winding machine 40 determines whether or not the winding of the wire 12 has reached the tooth tip 1c. When the winding of the wire 12 reaches the tooth tip 1c, the winding machine 40 proceeds to step S15. On the other hand, when the winding of the wire 12 does not reach the tooth tip 1c, the winding machine 40 returns to step S13.

(Step S15)
The winding machine 40 winds the wire 12 toward the core back 1b side.
Specifically, the winding machine 40 winds the wires 12 in order from the 13th round wire 12 to the 25th round wire 12 toward the core back 1b side.

At this time, there is a gap at a predetermined interval between the wire 12 of the 11th turn, the wire 12 of the 12th turn, and the peripheral side surface side of the insulator at the place where the wire 12 of the first layer to the second layer is folded. Arise.
Next, after the 12th turn of the wire 12 is wound, the 13th turn of the wire 12 is wound.
For this reason, the wire 12 on the 13th turn presses the coil on the 12th turn. As a result, the pressure applied to the twelfth turn of the wire 12 is sequentially transmitted from the eleventh turn of the wire 12 to the first turn of the wire 12. Therefore, the wire 12 in the first round is pushed into the core back 1b side.
As a result, external pressure is applied to the elastic dummy coil 9, and the shape of the elastic dummy coil 9 is deformed. Thereby, the wire 12 of the 11th round and the wire 12 of the 12th round are arrange | positioned in the state parallel to the surrounding side surface used as the winding side of the teeth 1a.
Therefore, the 14th round wire 12 is arranged from the side of the 11th round wire 12 to the side of the 12th round wire 12.
That is, the fourteenth wire 12 is arranged so as to be difficult to be inserted between the eleventh wire 12 and the twelfth wire 12.

Therefore, by providing the insulator with the elastic dummy coil 9 whose shape can be changed, the wires 12 can be aligned in accordance with the arrangement width of the first-layer wires 12.
Therefore, it becomes possible to arrange | position the wire 12 after the 2nd layer in bowl shape.
Further, since the shape of the elastic dummy coil 9 is deformed by the external pressure, the gap between the wires 12 can be filled. Therefore, it is possible to improve the space factor of the winding 6 while suppressing winding disturbance and collapse of the winding 6.

(Step S16)
The winding machine 40 determines whether the winding of the wire 12 has reached the core back 1b. When the winding of the wire 12 reaches the core back 1b, the winding machine 40 proceeds to step S17. On the other hand, when the winding of the wire 12 does not reach the core back 1b, the winding machine 40 returns to step S15.

(Step S17)
The winding machine 40 determines whether or not a predetermined number of turns has been reached. When the winding machine 40 does not reach the predetermined number of turns, the winding machine 40 returns to step S13. On the other hand, when the winding machine 40 has reached a predetermined number of turns, the process ends.

  As described above, in the first embodiment of the present invention, the rotating electrical machine includes the rotor 52, the stator 81 having the stator core 1, and the insulator attached to the stator core 1 and formed of an insulating member. And an elastic dummy coil 9 provided integrally with the insulator and deformable by external pressure, and a wire 12 wound around the teeth 1a of the stator core 1. The elastic dummy coil 9 includes the teeth 1a, Arranged at the corner formed between the core back 1b provided substantially perpendicular to the teeth 1a and wound around the first layer of the winding 6 formed on the stator core 1. The wire 12 is adjacent to the elastic dummy coil 9, and the wire 12 wound on the first layer of the second layer of the winding 6 formed on the stator core 1 is placed at the end of the first layer of the winding 6. Wound wire 12 By arranged in pressed in, while suppressing uneven winding and winding collapse of the winding 6, it is possible to improve the space factor of the winding 6.

Embodiment 2. FIG.
FIG. 9 is a diagram showing a state after the insulator in Embodiment 2 of the present invention is divided into two and the alignment width of the first-layer winding 6 is adjusted in accordance with the wire diameter of the wire 12.
In the second embodiment, items that are not particularly described are the same as those in the first embodiment, and the same functions and configurations are described using the same reference numerals.

As shown in FIG. 9, in the second embodiment of the present invention, the insulator has a separable shape. Specifically, the peripheral side surface of the tooth 1 a is not covered with the insulating film 8, but the peripheral side surface of the tooth 1 a is covered with the U-side insulator 2.
At this time, the U-side insulator 2 is different from the first embodiment of the present invention in that the inner peripheral side surface of the core back 1b, the corner formed by the core back 1b and the tooth 1a, the peripheral side surface of the tooth 1a, and the tooth 1a And the corner formed by the tooth tip 1c and the inner peripheral side surface of the tooth tip 1c.
That is, in Embodiment 1 of the present invention, the U-side insulator 2 merely electrically insulates the winding 6 from the core back 1b side of the element stator core 53, but the present invention is not implemented. In the second embodiment, the U-side insulator 2 electrically insulates the winding 6 from the entire element stator core 53.

  More specifically, the U-side insulator 2 is divided at the core back 1b side and the tooth tip 1c side in the tooth 1a. For example, as shown in FIG. 9, the U-side insulator 2 is divided in the vicinity of the wire 12 of the fifth turn counted from the coil of the first turn adjacent to the elastic dummy coil 9 side. The core back 1b side of the U-side insulator 2 and the tooth tip 1c side of the U-side insulator 2 are connected by an elastic body, for example, a spring, and are in a state of attracting each other.

Next, the operation will be described.
As the winding machine 40 winds the wire 12 along the teeth 1a, a component of the force accompanying the winding of the wire 12 is applied to the teeth tip 1c side of the U-side insulator 2. Accordingly, the core back 1b side of the U-side insulator 2 is attracted.
Thereby, the force which pressurizes the wire 12 of the first layer toward the core back 1b side is applied. Therefore, the first-layer wire 12 pressurizes the short-side elastic dummy coil 15.
As a result, the first-layer wire 12 can be arranged so that no gap is generated.
Therefore, since the wire 12 of the first layer can take a stable arrangement, the arrangement of the wires 12 after the second layer can be stacked in a bowl shape.

As described above, since the insulator is divided into two parts, the gap between the folded portions of the first layer to the second layer can be filled without depending on the wire diameter of the wire 12, so that the wire 12 Can be aligned in a stable arrangement.
Accordingly, it is possible to improve the space factor of the winding 6 while suppressing the winding disturbance and collapse of the winding 6.

Note that the elastic body provided between the core back 1b side of the U-side insulator 2 and the tooth tip 1c side of the U-side insulator 2 is not limited to the elastic body described above.
For example, it may be formed of a stretchable resin such as a rubber material or a stretchable fiber material.
Although not shown, the L-side insulator 3 may have the same configuration as the U-side insulator 2.

  As described above, in the second embodiment of the present invention, the rotating electrical machine includes a plurality of element stator cores 53 formed by the stator core 1 including the teeth 1a, the core back 1b, and the tooth tip 1c. The insulator is attached to each element stator core 53, and is formed by being divided between the core back 1b side and the tooth tip 1c side, and the divided parts are mutually connected. By having the elastic body in an attracting state, it is possible to improve the space factor of the winding 6 while suppressing the winding disturbance and collapse of the winding 6.

Embodiment 3 FIG.
FIG. 10 is a diagram showing a state in which the wire 12 is wound after the elastically deformable rubber sheet according to the third embodiment of the present invention is disposed on the side surface of the insulator.
In the third embodiment, items that are not particularly described are the same as those in the first and second embodiments, and the same functions and configurations are described using the same reference numerals.

As shown in FIG. 10, the element stator core 53 includes an inner peripheral side surface of the core back 1b, a corner formed by the core back 1b and the tooth 1a, a peripheral side surface of the tooth 1a, a tooth 1a, and a tooth tip. Elastic rubber 19 that is an elastic member is provided at each corner formed by the portion 1c and the inner peripheral side surface of the tooth tip 1c.
An elastic dummy coil 9 is provided at the corner formed by the core back 1b and the tooth 1a, but is hidden by the elastic rubber 19.

With such a structure, when the winding machine 40 sequentially winds the wire 12 from the core back 1b side toward the tooth tip 1c, the deviation width between the wire diameter of the wire 12 and the size of the elastic dummy coil 9 is Absorbed by the elastic rubber 19.
Specifically, the elastic rubber 19 contracts in accordance with the wire diameter of the first-layer wire 12. Therefore, the wires 12 can be arranged along the side surfaces of the U-side insulator 2 and the L-side insulator 3 so as to be substantially parallel to the side surfaces of the U-side insulator 2 and the L-side insulator 3.
The second-layer wires 12 can be stacked in a bowl shape by being disposed between the respective first-layer wires 12. That is, the distance between the center of each wire 12 in the first layer and the center of each wire 12 in the second layer can be reduced.
In addition, although the case where the elastic rubber 19 was provided as an example of an elastic member was demonstrated, it is not limited to this. For example, fiber materials such as chemical fibers may be used.

As described above, the elastic rubber 19 arranged on the side surface of the insulator absorbs the deviation width between the wire diameter of the wire 12 and the size of the elastic dummy coil 9, so that the wire arranged at the first to the second layer folded portion. 12 can be provided in a stable arrangement.
Accordingly, it is possible to suppress the winding disturbance and collapse of the winding 6 and to improve the space factor of the winding 6.

  As described above, in the third embodiment of the present invention, the rotating electrical machine includes the element stator core 53, the inner peripheral side surface of the core back 1b, the corner formed by the core back 1b and the teeth 1a, Distortion of the winding 6 is caused by providing the elastic rubber 19 on the peripheral side surface of the tooth 1a, the corner formed by the tooth 1a and the tooth tip portion 1c, and the inner peripheral side surface of the tooth tip portion 1c. Further, the space factor of the winding 6 can be improved while suppressing the collapse of the winding.

  1 Stator Iron Core, 1a Teeth, 1b Core Back, 1c Teeth Tip, 1d Thin Connection, 1e Core End, 2 U Insulator, 3 L Insulator, 4 Magmate, 5 Lead Wire, 6 Winding, 7 Jumper Wire 8 insulating film 9 elastic dummy coil 10 nozzle 11 flyer 12 wire 13 chuck device 14 long side elastic dummy coil 15 short side elastic dummy coil 16 winding coil 17 core back side divided insulator , 18 Teeth tip side split insulator, 19 Elastic rubber, 20 Core back side, 21 Teeth tip side, 30 Stator winding, 40 winding machine, 51 Mold stator, 52 Rotor, 53 Element stator core, 54 Bracket 55 connection parts, 56 stator assembly, 61 electric motor, 71 arrows, 72 support members, 73 pulleys, 81 stators.

Claims (6)

A rotor,
A stator having a stator core;
An insulator attached to the stator core and formed of an insulating member;
A dummy coil provided integrally with the insulator and deformable by external pressure;
A wire wound around the teeth of the stator core;
With
The dummy coil is disposed at a corner formed between the teeth and a core back provided substantially perpendicular to the teeth,
The wire wound in the first layer of the winding formed in the stator core is adjacent to the dummy coil;
The wire wound in the first layer of the second layer of the winding formed on the stator core is the wire wound at the end of the first layer of the winding between the insulator and the dummy coil. Arranged in a state of being pushed into the gap formed between ,
The stator core is formed by connecting a plurality of element stator cores formed by the teeth, the core back, and the tip of the teeth,
The insulator is
It is attached to each of the element stator cores, and is formed by being divided on the core back side and the tip end side of the teeth, and has an elastic body that is in a state of attracting each other. > Rotating electric machine characterized by The rotating electrical machine according to claim 1, wherein the dummy coil is formed of a material that is elastically deformed or plastically deformed. The rotating electrical machine according to claim 1, wherein the dummy coil is formed of a rubber material. The rotating electric machine according to any one of claims 1 to 3, wherein the dummy coil is pressurized with the wire and deformed in accordance with a wire diameter of the wire. A rotor,
A stator having a stator core;
An insulator attached to the stator core and formed of an insulating member;
A dummy coil provided integrally with the insulator and deformable by external pressure;
A wire wound around the teeth of the stator core;
With
The dummy coil is disposed at a corner formed between a portion where the wire of the tooth is wound and a tip portion of the portion of the tooth,
The wire wound in the first layer of the winding formed in the stator core is adjacent to the dummy coil;
The wire wound in the first layer of the second layer of the winding formed on the stator core is the wire wound at the end of the first layer of the winding between the insulator and the dummy coil. Arranged in a state of being pushed into the gap formed between ,
The stator core is formed by connecting a plurality of element stator cores formed by the teeth, the core back, and the tip of the teeth,
The insulator is
It is attached to each of the element stator cores, and is formed by being divided on the core back side and the tip end side of the teeth, and has an elastic body that is in a state of attracting each other. > Rotating electric machine characterized by The element stator core is
An inner peripheral side surface of the core back, a corner portion formed by the core back and the teeth, a peripheral side surface of the teeth, a corner portion formed by the teeth and a tip portion of the teeth, and the teeth The rotating electrical machine according to any one of claims 1 to 5, wherein an elastic member is provided on each of the inner peripheral side surfaces of the tip portion of the rotating electrical machine.

Images