JP2012257410A - Manufacturing method of motor stator, and manufacturing apparatus of motor stator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To insert a trapezoid coil with a reduced winding twist angle into a tooth portion of a laminated steel plate stator core.SOLUTION: In a manufacturing apparatus of a motor stator having a stator core 30 where a plurality of recessed slots 32 and a plurality of tapered projecting teeth 31 are formed on an inner periphery and a plurality of trapezoid coils 10 disposed in the slots 32 where rectangular conductors with rectangular cross-sections are bent and concentrically wound in a trapezoid, a coil shape regulation member can regulate the first trapezoid coil 10A in a wound and twisted state to insert the first trapezoid coil 10A into the tooth 31A while preventing the first trapezoid coil 10A from being wound and twisted.

Description

  The present invention relates to a motor stator manufacturing method and a motor stator manufacturing apparatus for arranging a plurality of trapezoidal coils using a rectangular conductor on teeth of a stator core having a plurality of teeth formed on the inner periphery. .

Conventionally, as this type of technology, there is a method of manufacturing a motor stator described in Patent Document 1 below. A method of manufacturing the motor stator shown in Patent Document 1 will be described with reference to FIGS.
FIG. 14 is a conceptual cross-sectional view showing a state in which the trapezoidal coil 100 is inserted into a plurality of teeth portions 201 of the stator core 200. In order to obtain the state shown in FIG. 14, the trapezoidal coil 100 is inserted into a plurality of teeth 201 formed on the stator core 200. However, when the last trapezoidal coil 100A is inserted into the last tooth portion 201A, the trapezoidal coil 100B and the trapezoidal coil 100C located on both sides with respect to the lateral width H1 of the trapezoidal coil 100A as shown in FIG. The width H2 up to is narrower. Therefore, there is a problem that the trapezoidal coil 100A cannot be inserted into the tooth portion 201A from the vertical direction in the state shown in FIG.

Therefore, as shown in FIG. 13, the present applicant deforms the trapezoidal coil 100A into a slanted deformed shape by a coil clamp which is an unillustrated motor stator manufacturing apparatus in an air-core state. The trapezoidal coil 100A can be inserted into the tooth portion 201A by making it a tanned deformed shape. That is, the trapezoidal coil 100A has a smoothly deformed shape, so that the lateral width becomes the lateral width H3. The lateral width H3 of the trapezoidal coil 100A is narrower than the width H2 to the trapezoidal coil 100B and the trapezoidal coil 100C shown in FIG. Therefore, by making trapezoidal coil 100A into a tanned deformed shape, one end thereof can be inserted into the slot beside teeth portion 201A. Subsequently, after one end portion of the trapezoidal coil 100A is inserted into the slot beside the teeth portion 201A, the trapezoidal coil 100A returns to its original shape by elastic force by releasing the coil clamp. The trapezoidal coil 100A that has returned to its original shape can be accommodated in the slot beside the tooth portion 201A, resulting in the state shown in FIG.
According to the method for manufacturing a stator of a motor in Patent Document 1, a plurality of trapezoidal coils 100 can be inserted into all the plurality of teeth portions 201.

JP 2008-220093 A

However, the prior art has the following problems.
That is, as shown in FIG. 13, when the trapezoidal coil 100A is licked and deformed by a coil clamp, a winding twist may occur depending on the trapezoidal coil 100A. The winding twist means that the trapezoidal coil 100A is twisted in directions other than the horizontal direction X and the vertical direction Y as shown in the trapezoidal coil 100A of FIG. The winding twist state refers to a state in which a winding twist occurs in the trapezoidal coil 100A. When a winding twist occurs in the trapezoidal coil 100A, the winding twist angle O may increase. Specifically, in the case of a normal tanned deformed shape, the trapezoidal coil 100A only moves in the lateral direction X, and the lead wires 121A to 122A are parallel. However, as shown in FIG. 15, when the trapezoidal coil 100 </ b> A has a winding twist and is in a winding twist state, the lead wire 121 </ b> A and the terminal 122 </ b> A are not parallel and the winding twist angle O may increase. When the winding twist angle O is large, the shape change due to the spring back that occurs when the coil clamp is released becomes large. For this reason, when the trapezoidal coil 100A returns to its original shape due to the elastic force, the trapezoidal coil 100B and the trapezoidal coil 100C may interfere with each other and be damaged. If scratched, it becomes a problem because the insulation of the trapezoidal coil cannot be secured.

  Further, when the winding twist angle O is large, the width H3 of the trapezoidal coil 100A shown in FIG. 13 increases. When the width H3 increases and the width H2 to the trapezoidal coil 100B and the trapezoidal coil 100C becomes close to each other, the trapezoidal coil 100A interferes with the trapezoidal coil 100B and the trapezoidal coil 100C, and the trapezoidal coil 100B and the trapezoidal when the trapezoidal coil 100A is inserted. There is a risk of damaging the coil 100C. If scratched, it becomes a problem because the insulation of the trapezoidal coil cannot be secured.

  Therefore, the present invention has been made to solve the above-described problems, and the object of the present invention is to provide a motor stator that is inserted into the teeth portion of the laminated steel plate stator core in a state where the winding twist angle of the trapezoidal coil is reduced. It is an object to provide a manufacturing method and a motor stator manufacturing apparatus.

In order to achieve the above object, a motor stator manufacturing method and a motor stator manufacturing apparatus according to an aspect of the present invention have the following configurations.
(1) A stator core in which a plurality of concave slots and a plurality of teeth that become thinner toward the convex tip are formed on the inner periphery, and a rectangular conductor having a rectangular cross section disposed in the slot is bent. An apparatus for manufacturing a motor stator having a plurality of trapezoidal coils wound in a trapezoidally concentrated manner includes a coil shape regulating member for regulating the trapezoidal coil in a twisted state.

(2) In the motor stator manufacturing apparatus described in (1), it is preferable that the coil shape regulating member clamps an upper surface and a lower surface, or an upper surface or a lower surface of the trapezoidal coil.

(3) In the motor stator manufacturing apparatus described in (1), it is preferable that the coil shape regulating member grips a lead wire portion protruding from the trapezoidal coil.

(4) In the motor stator manufacturing apparatus described in (1), it is preferable that the coil shape regulating member guides an outer peripheral surface of the trapezoidal coil with a guide rail.

(5) A stator core having a plurality of concave slots on the inner periphery and a plurality of teeth that become thinner toward the convex tip, and a rectangular conductor having a rectangular cross section disposed in the slot are bent. In a motor stator manufacturing method for manufacturing a motor stator having a plurality of trapezoidal coils that are trapezoidally wound in a trapezoidal manner, the trapezoidal coil is restricted by a coil shape regulating member and is in a state of being twisted, and the winding twisted state The trapezoidal coil is inserted into the slot.

(6) In the method of manufacturing a motor stator described in (5), it is preferable that the coil shape regulating member clamps an upper surface and a lower surface, or an upper surface or a lower surface of the trapezoidal coil.

(7) In the motor stator manufacturing method described in (5), it is preferable that the coil shape regulating member grips a lead wire portion protruding from the trapezoidal coil.

(8) In the method of manufacturing a motor stator described in (5), it is preferable that the coil shape regulating member guides an outer peripheral surface of the trapezoidal coil with a guide rail.

The operation and effect of the motor stator manufacturing apparatus and the motor stator manufacturing method will be described.
(1) (5) A stator core in which a plurality of concave slots and a plurality of teeth that narrow toward the convex tip are formed on the inner periphery, and a rectangular conductor with a rectangular cross section disposed in the slot is bent. In a motor stator manufacturing apparatus having a plurality of trapezoidal coils that are processed and trapezoidally wound in a trapezoidal shape, the apparatus includes a coil shape regulating member that regulates the trapezoidal coil into a licked deformation state, thereby preventing the adjacent trapezoidal coil from being contacted. A trapezoidal coil can be inserted for one tooth. That is, by restricting the trapezoidal coil to the slanted deformation state, it is possible to prevent the winding twist from occurring and maintain the state where the winding twist angle O is small. Therefore, the trapezoidal coil can be inserted into the first tooth without contacting the adjacent trapezoidal coil.
In addition, since the state of the trapezoidal coil can be restricted while the winding twist angle O is small, the shape change due to the springback that occurs when the coil clamp is released is also reduced. Therefore, even when the trapezoidal coil returns to the shape of the original trapezoidal coil due to the elastic force, it is possible to prevent the adjacent trapezoidal coil from interfering with and scratching.

(2) In addition to the functions and effects described in (6), (1), and (5), the coil shape regulating member clamps the upper and lower surfaces of the trapezoidal coil, or the upper or lower surface of the trapezoidal coil. The shape can be regulated in a slanted deformation state. In other words, the trapezoidal coil does not move in the axial direction by clamping the upper surface and the lower surface, or the upper surface or the lower surface with the coil shape regulating member. Therefore, the upper surface and the lower surface can be kept parallel, and the winding twist of the trapezoidal coil can be prevented. Therefore, the trapezoidal coil can be inserted into the teeth as a slanted deformation shape while preventing the winding twist by using the coil shape regulating member.

(3) In addition to the effects described in (7), (1) and (5), the coil shape regulating member grips the lead wire portion protruding from the trapezoidal coil, so that the trapezoidal coil does not twist. The shape can be regulated by the slanted deformation shape. That is, if the parallel relationship between the two lead wires can be maintained, it is possible to prevent a twist in a direction other than the horizontal direction X and the vertical direction Y from being applied. Since it is possible to prevent the trapezoidal coil from being twisted, winding twist can be prevented. Therefore, the trapezoidal coil can be inserted into the teeth as a slanted deformation shape while preventing the winding twist by using the coil shape regulating member.

(4) In addition to the functions and effects described in (8), (1), and (5), the coil shape restricting member guides the outer peripheral surface of the trapezoidal coil with a guide rail, so that the trapezoidal coil is licked and deformed The trapezoidal coil can be inserted into the first tooth while the state is regulated. This is because the presence of the guide rail allows insertion into adjacent trapezoidal coils without interference.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external perspective view of a motor stator manufacturing apparatus according to a first embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external side view of a motor stator manufacturing apparatus according to a first embodiment of the present invention. 1 is a front view of a motor stator manufacturing apparatus according to Embodiment 1 of the present invention. It is a partial external appearance perspective view of the stator core which concerns on the present Example 1 of this invention. It is a conceptual sectional view of a manufacturing process (1) of a motor stator concerning Example 1 of the present invention. It is a conceptual sectional view of a manufacturing process (2) of a motor stator concerning Example 1 of the present invention. It is a conceptual sectional view of a manufacturing process (3) of a motor stator concerning Example 1 of the present invention. It is a conceptual sectional view of a manufacturing process (4) of a motor stator concerning Example 1 of the present invention. It is a conceptual sectional view of a manufacturing process (5) of a motor stator concerning Example 1 of the present invention. It is a conceptual diagram of the manufacturing apparatus of the motor stator which concerns on this Example 2 of this invention. It is a conceptual diagram of the motor stator manufacturing apparatus according to the third embodiment of the present invention. It is a conceptual sectional view of manufacturing process (1) of a motor stator concerning a prior art. It is a conceptual sectional view of manufacturing process (2) of a motor stator concerning a prior art. It is a conceptual sectional view of manufacturing process (3) of a motor stator concerning a prior art. It is an external appearance perspective view of the trapezoid coil shown in FIG.

  Next, a motor stator manufacturing method and a motor stator manufacturing apparatus according to an embodiment of the present invention will be described with reference to the drawings.

<Overall configuration of motor stator>
FIG. 4 shows a partial external perspective view of the stator core 30. Note that the turns of the trapezoidal coil 10 shown in FIG. FIG. 4 shows a state in which the first trapezoidal coil 10A is licked and deformed.
The first trapezoidal coil 10A, the second trapezoidal coil 10B, and the third trapezoidal coil 10C in the present embodiment are configured by winding a rectangular conductor having a rectangular cross section into two layers inside and outside in a spiral shape. As shown in FIG. 5, the trapezoidal coil 10 has a trapezoidal cross section. The closer to the center direction of the motor stator, the narrower the trapezoidal coil 10, and the farther from the central direction, the wider the trapezoidal coil 10. As shown in FIG. 4, the trapezoidal coil 10 has two side surfaces 101, an upper surface 102, a lower surface 103, a front surface 104, and a back surface 105. The upper surface 102 and the lower surface 103 are in a parallel relationship, and the two side surfaces 101 are also in a parallel relationship. Further, since the trapezoidal coil 10 is composed of a single rectangular conductor, two lead wires 110A and 110B protrude from the upper surface 102. The relationship between the two lead wires 110A and 110B is a parallel relationship. The flat rectangular conductor is made of a metal having good conductivity such as copper, and has an insulating coating around it. The insulating coating is formed of an enamel coating or a resin capable of ensuring insulation, such as polyimide or amideimide.

The stator core 30 is formed by laminating hollow disc-shaped metal plates. The stator core 30 has teeth 31 and a plurality of concave slots 32 that become thinner toward a plurality of convex tips. Is formed. The slot 32 has a space for accommodating coils inserted by winding the outer periphery of the teeth 31 on both sides. That is, one slot 32 is configured by the slot 32A of the first tooth 31A and the slot 32B of the second tooth 31B.
The teeth 31 are formed in a trapezoidal shape whose tip is narrowed toward the inside of the stator core 30. The slot 32 is formed by being cut into a substantially U-shape. Of the inner surface of the slot 32, the opposite side surfaces are formed in parallel.

<Motor stator manufacturing equipment>
In FIG. 1, the external appearance perspective view of the motor stator manufacturing apparatus 1 is shown. In FIG. 2, the external appearance side view of the motor stator manufacturing apparatus 1 is shown. In FIG. 3, the front view of the motor stator manufacturing apparatus 1 is shown.
The motor stator manufacturing apparatus 1 is an apparatus for clamping and trapping the trapezoidal coil 10 and inserting and assembling the teeth 31 in the state where the trapezoidal coil 10 is twisted.

  As shown in FIG. 1, a trapezoidal coil 10 is inserted in the center of the motor stator manufacturing apparatus 1, and the trapezoidal coil 10 is gripped by clamp claws 12 </ b> A and 12 </ b> B formed at upper and lower ends of a robot hand 11. Yes. The clamp claws 12 </ b> A and 12 </ b> B are formed near the upper surface 102 and the lower surface 103 with respect to the back surface 105 of the trapezoidal coil 10. The clamp claws 12A and 12B are movable in the radial direction of the cylindrical motor stator. The pressing surfaces 121A and 121B of the clamp claws 12A and 12B press the back surface 105 of the trapezoidal coil 10, and the trapezoidal coil 10 is gripped by pressing the front surface 104 of the trapezoidal coil 10 against the contact portion 131 of the coil shape regulating member 13. . The clamp claws 12 </ b> A and 12 </ b> B can regulate changes in the radial shape of the trapezoidal coil 10.

As shown in FIG. 2, the trapezoidal coil 10 is restricted to a licked shape by coil shape restricting members 13 </ b> A and 13 </ b> B formed on the upper and lower portions of the robot hand 11. The coil shape regulating members 13 </ b> A and 13 </ b> B are formed so as to contact the upper surface 102 and the lower surface 103 of the trapezoidal coil 10. As shown in FIG. 2, the coil shape regulating members 13 </ b> A and 13 </ b> B are substantially L-shaped, and contact portions 131 </ b> A and 131 </ b> B are formed with respect to the outer peripheral radial direction in contact with the trapezoidal coil 10. Clamp portions 132A and 132B are formed in the axial direction of the trapezoidal coil 10 that contacts the trapezoidal coil 10. As shown in FIG. 3, the coil shape regulating members 13A and 13B have a rectangular cross section, and the clamp portions 132A and 132B are formed so as to be parallel to the upper surface 102 and the lower surface 103. The widths of the clamp portions 132A and 132B are smaller than the widths of the upper surface 102 and the lower surface 103.
The coil shape regulating member 13 is movable in the axial direction of the cylindrical motor stator, and the shape of the trapezoidal coil 10 in the axial direction is pressed by the clamp portions 132A and 132B pressing the upper surface 102 and the lower surface 103 of the trapezoidal coil 10. Can be controlled. Since the change in the shape of the trapezoidal coil 10 in the axial direction can be restricted, the occurrence of winding twist can be prevented. That is, the winding twist occurs when the upper surface 102 and the lower surface 103 are not in a parallel state. Therefore, it is possible to prevent winding twist by maintaining the parallel state of the upper surface 102 and the lower surface 103.

  Furthermore, the change in the radial shape of the trapezoidal coil 10 is restricted by the clamp claws 12, and the change in the axial shape of the trapezoidal coil 10 is restricted by the coil shape restriction member 13. Can be regulated. That is, the trapezoidal coil 10 can only be moved in the circumferential direction by restricting changes in the radial and axial shapes of the trapezoidal coil 10. Therefore, since the winding twist does not occur in the trapezoidal coil 10, it is possible to restrict the shape to a slanted shape.

  In the present embodiment, the coil shape regulating member 13 is formed in the portion that contacts the upper surface 102 and the lower surface 103 of the trapezoidal coil 10, but may be formed so as to contact either the upper surface 102 or the lower surface 103. . This is because the twisting of the trapezoidal coil 10 can be prevented from occurring also by contacting either the upper surface 102 or the lower surface 103. In addition, when the coil shape control member 13 is formed on the upper surface 102 and the lower surface 103, prevention of winding twist can be minimized. The reason is that it is easy and reliable to keep the upper surface 102 and the lower surface 103 parallel by pressing the upper surface 102 and the lower surface 103.

  That is, in the trapezoidal coil, when the upper surface 102 and the lower surface 103 are not in a parallel state, a winding twist is generated and a winding twist state is obtained. Even in the two-layered trapezoidal coil 10 shown in FIG. 4 in the present embodiment, when the upper surface 102 and the lower surface 103 are not in the parallel state, the winding twist state remains unchanged. In the present embodiment, since the upper surface 102 and the lower surface 103 are pressed by the coil shape regulating member 13, changes in the shape of the trapezoidal coil 10 in the axial direction can be regulated. Accordingly, since the parallel state of the trapezoidal coil 10 can be maintained, it is possible to prevent the trapezoidal coil 10 from being twisted and generating the angle O.

<Method for manufacturing motor stator>
Next, the process of inserting the trapezoidal coil 10 into all the slots 32 of the stator core 30 will be described with reference to FIGS. 5 to 9 are conceptual cross-sectional views in the first to fourth manufacturing steps of the motor stator. 5 to 9 show the movement of the trapezoidal coil 10A, and the motor stator manufacturing apparatus 1 is not shown. Both figures are partial views of the stator core 30 as viewed from above. The trapezoidal coil 10 is shown in cross section. The stator core 30 is not divided and is integrally formed with a cylindrical outer shape.

(Preliminary process)
As shown in FIG. 5, slots 32B other than the first teeth 31A such as the second teeth 31B, the third teeth 31C, and the other fourth teeth 31D adjacent to both sides of the first teeth 31A in the stator core 30 and the like. The trapezoidal coil 10B and the like are inserted in the inside. In order to insert the trapezoidal coil 10B into the slots 32B etc. other than the first teeth 31A, the trapezoidal coil 10 can be inserted without being deformed.

(First step)
The shape of the trapezoidal coil 10A is changed from the trapezoidal shape shown in FIG. 5 to the slanted deformed shape shown in FIG. 6 by the shape forming member that changes the shape of the trapezoidal coil 10A. At that time, the shape of the trapezoidal coil 10A is changed while paying attention to prevent the trapezoidal coil 10A from being twisted.

(Second step)
In a state where the trapezoidal coil 10A shown in FIG. That is, as shown in FIG. 1, the front surface 104 of the trapezoidal coil 10 </ b> A fixed at the center of the motor stator manufacturing apparatus 1 with a slanting deformation shape is inserted so as to contact the contact portions 131 </ b> A and 131 </ b> B.
Subsequently, the trapezoidal coil 10 </ b> A is gripped by the clamp claws 12 </ b> A and 12 </ b> B formed at the tip of the robot hand 11. By moving the clamp claws 12A and 12B in the radial direction of the cylindrical motor stator, the pressing surfaces 121A and 121B press the back surface 105 of the trapezoidal coil 10, and the front surface 104 of the trapezoidal coil 10 is The trapezoidal coil 10 is held by being pressed against the contact portion 131. Thereby, the clamp claws 12 </ b> A and 12 </ b> B can regulate the change in the radial shape of the trapezoidal coil 10.

  Further, as shown in FIG. 2, the clamp portions 132A and 132B of the coil shape regulating members 13A and 13B are pressed and brought into contact with the upper surface 102 and the lower surface 103 of the trapezoidal coil 10A. By pressing the upper surface 102 and the lower surface 103 of the trapezoidal coil 10, the change in the shape of the trapezoidal coil 10 in the axial direction can be regulated. That is, the winding twist occurs when the trapezoidal coil 100A is twisted in directions other than the horizontal direction X and the vertical direction Y as shown in the trapezoidal coil 100A of FIG. The winding twist occurs when the upper surface 102 and the lower surface 103 are not in a parallel state. Therefore, as shown in this embodiment, the trapezoidal coil 10 </ b> A does not move in the axial direction by pressing the upper surface 102 and the lower surface 103 with the clamp portions 132 </ b> A and 132 </ b> B of the coil shape regulating member 13. Therefore, the parallel state of the upper surface 102 and the lower surface 103 can be maintained, and the winding twist of the trapezoidal coil 100A can be prevented. Further, the winding twist angle O can be reduced.

(3rd process)
The first trapezoidal coil 10A is inserted into the slot 32 as shown in FIG. 7 while maintaining the tanned deformed shape shown in FIG. The width P of the first trapezoidal coil 10A shown in FIG. 6 is smaller than the width Q to the second trapezoidal coil 10B and the third trapezoidal coil 10C. Therefore, the first trapezoidal coil 10 </ b> A can be inserted into the slot 32.

(4th process)
In a state where the one side portion 130 of the first trapezoidal coil 10 </ b> A shown in FIG. 7 is inserted into the slot 32, the clamp state by the clamp claws 12 of the motor stator manufacturing apparatus 1 is released. By releasing the clamped state, the first trapezoidal coil 10A returns to the original trapezoidal shape by the elastic force of the first trapezoidal coil 10A. That is, when the clamped state is released, the shape of the first trapezoidal coil 10A changes in the direction of arrow R shown in FIG. When the shape returns to the original trapezoidal shape, the other side portion 140 is inserted into the slot 32, and the first trapezoidal coil 10A is inserted into the first tooth 31A as shown in FIG.

As described above in detail, the motor stator manufacturing method and motor stator manufacturing apparatus of the present embodiment have the following effects.
By having the coil shape restricting members 13A and 13B that restrict the first trapezoidal coil 10A to the lick deformation state, the first trapezoidal coil 10A is inserted into the first tooth 31A without being in contact with the adjacent trapezoidal coils 10B and 10C. Can do. That is, by restricting the first trapezoidal coil 10 </ b> A to the slanted deformation state, it is possible to prevent a winding twist and to maintain a state where the winding twist angle O is small. Therefore, the first trapezoidal coil 10A can be inserted into the first tooth 31A without contacting the adjacent trapezoidal coils 10B and 10C.
In addition, since the state of the first trapezoidal coil 10A can be restricted while the winding twist angle O is small, the shape change due to the springback that occurs when the coil shape restriction members 13A and 13B are released becomes small. . Therefore, even when the first trapezoidal coil 10A returns to the shape of the original trapezoidal coil by the elastic force, it is possible to prevent the adjacent trapezoidal coils 10B and 10C from being interfered with and scratched.

  The clamp portions 132A and 132B of the coil shape regulating members 13A and 13B press the upper surface 102 and the lower surface 103 of the first trapezoidal coil 10A, or the upper surface 102 or the lower surface 103, thereby licking the first trapezoidal coil 10A. The shape can be regulated in the deformed state. That is, when the side surface 101 of the first trapezoidal coil 10A is clamped, it interferes with the adjacent trapezoidal coils 10B and 10C, and the first trapezoidal coil 10A cannot be inserted into the first tooth 31A. However, when the upper surface 102 and the lower surface 103 of the first trapezoidal coil 10A, or the upper surface 102 or the lower surface 103 is pressed, the winding state of the first trapezoidal coil 10A does not interfere with the adjacent trapezoidal coils 10B and 10C. This is because the first trapezoidal coil 10A can be inserted into the first tooth 31A.

(Second Embodiment)
Compared with the motor stator manufacturing apparatus and the motor stator manufacturing method according to the first embodiment, the motor stator manufacturing apparatus and the motor stator manufacturing method according to the second embodiment are among the motor stator manufacturing apparatuses. There is no difference except that the shape of the coil shape regulating member 40 is different. Therefore, in 2nd Embodiment, the other description is omitted by describing in detail the coil shape control member 40 among the motor stator manufacturing apparatuses 1. FIG.
In addition, in 2nd Embodiment, although description is abbreviate | omitted about a structure other than the coil shape control member 40, and an effect, the other part has the structure and effect similar to 1st Embodiment.

<Configuration of coil shape regulating member>
The conceptual diagram of the coil shape control member 40 which is a part of the manufacturing apparatus 1 of a motor stator is shown in FIG.
As shown in FIG. 10, the coil shape regulating member 40 grips the lead wires 110A and 110B. The coil shape regulating member 40 includes a first lead gripping member 41 that grips the lead wire 110A and a second lead gripping member 42 that grips the lead wire 110B. The first lead holding member 41 and the second lead holding member 42 can be held by pressing the lead wire from the side. The first lead holding member 41 and the second lead holding member 42 are for holding the lead wires 110A and 110B and maintaining the parallel relationship between the lead wires 110A and 110B.

  By holding the lead wires 110A and 110B by the first lead gripping member 41 and the second lead gripping member 42 and maintaining the parallel relationship, it is possible to prevent the first trapezoidal coil 10A from being twisted. That is, the winding twist is when the twist is applied to the first trapezoidal coil 10A in a direction other than the horizontal direction X and the vertical direction Y. Therefore, if the parallel relationship between the two lead wires 110A and 110B can be maintained, it is possible to prevent a twist in a direction other than the horizontal direction X and the vertical direction Y from being applied. By preventing the first trapezoidal coil 10 </ b> A from being twisted, winding twist can be prevented. Therefore, the first trapezoidal coil 10A can be inserted into the first tooth 31A as a slanted deformed shape while preventing the winding twist by using the coil shape regulating member 40.

As explained in detail above, the motor stator manufacturing apparatus and motor stator manufacturing method of the second embodiment have the following operational effects.
In addition to the operational effects of the motor stator manufacturing apparatus 1 and the motor stator manufacturing method of the first embodiment, the coil shape regulating member 40 grips the lead wires 110A and 110B protruding from the first trapezoidal coil 10A. Thus, the first trapezoidal coil 10 </ b> A can be restricted to a slanted deformed shape. That is, by grasping the lead wires 110A and 110B protruding from the first trapezoidal coil 10A, the winding of the first trapezoidal coil 10A is prevented and the first teeth 31A are prevented from interfering with the adjacent trapezoidal coils 10B and 10C. Can be inserted.

(Third embodiment)
Compared with the motor stator manufacturing apparatus and the motor stator manufacturing method according to the first embodiment, the motor stator manufacturing apparatus and the motor stator manufacturing method according to the third embodiment are among the motor stator manufacturing apparatuses. There is no difference except that the shape of the coil shape regulating member 50 is different. Therefore, in 3rd Embodiment, the other description is omitted by describing in detail the coil shape control member 50 among the motor stator manufacturing apparatuses 1. FIG.
In the third embodiment, the description of the configuration and operation other than the coil shape regulating member 50 is omitted, but the other parts have the same configuration and operation as in the first embodiment.

<Configuration of coil shape regulating member>
FIG. 11 is a conceptual diagram of a coil shape regulating member 50 that is a part of the motor stator manufacturing apparatus 1.
As shown in FIG. 11, the coil shape restricting member 50 guides and inserts the first trapezoidal coil 10 </ b> A into the first teeth 31 in a slick deformed shape. The coil shape regulating member 50 is a rail-shaped guide component and includes a right guide portion 52 that guides the right side surface of the first trapezoidal coil 10A and a left guide portion 51 that guides the left side surface. The right guide portion 52 has a rail shape extending in a straight line with respect to the slot 32. The right guide portion 52 has a parallel relationship with the side surface 101 of the first trapezoidal coil 10A when the first trapezoidal coil 10A shown in FIG. 9 is inserted into the first tooth 31A.

  On the other hand, as shown in FIG. 11, the left guide portion 51 has a generally square shape when viewed from above. Further, the left guide portion 51 includes two guide portions, a first left guide portion 511 and a second left guide portion 512. The first left guide portion 511 is formed such that the distance from the right guide portion 52 becomes shorter from the center direction of the motor stator toward the first teeth 31A. The second left guide portion 512 is in a parallel relationship with the side surface 101 of the first trapezoidal coil 10A when the first trapezoidal coil 10A shown in FIG. 9 is inserted into the first tooth 31A. The connecting portion 513 of the first guide portion 511 and the second guide portion 512 is in a positional relationship closest to the right guide portion 52.

The right side surface 101B of the first trapezoidal coil 10A is moved toward the first teeth 31A while being pressed against the right guide portion 52. Accordingly, the shape of the left side surface 101A of the first trapezoidal coil 10A is narrowed by the first left guide portion 511, and the first trapezoidal coil 10A has a slanted deformation shape. That is, the first trapezoidal coil 10A is guided by the first left guide part 511 while being pressed in the direction of the right guide part 52, whereby the left side surface 101A of the first trapezoidal coil 10A is pulled rearward of the first left guide part 511. It is done. Therefore, the first trapezoidal coil 10A has a slanted deformation shape as shown in FIG. Further, the first trapezoidal coil 10A is guided by the right guide portion 52 and the left guide portion 51 so that the side surface 101 is kept in parallel, so that the state of winding twist can be prevented.
Subsequently, when the first trapezoidal coil 10A is moved in the direction of the first teeth 31A, the first left guide portion 511 that is a portion that guides the left side surface 101A of the first trapezoidal coil 10A moves to the second left guide portion 512. And migrate. When the portion to be guided to the second guide portion 512 moves, the first trapezoidal coil 10A moves along the second guide portion 512, so that the first trapezoidal coil 10A returns to its original shape. Therefore, the first trapezoidal coil 10A is inserted into the first tooth 31A.

As explained in detail above, the motor stator manufacturing apparatus and motor stator manufacturing method of the third embodiment have the following operational effects.
In addition to the operational effects of the motor manufacturing apparatus and motor stator manufacturing method of the first embodiment, the coil shape regulating member 50 includes a right guide portion 52 and a left guide portion 51 that are side rails 101 of the first trapezoidal coil 10A serving as guide rails. Thus, the first trapezoidal coil 10A can be inserted into the first tooth 31A while having a slanted deformed shape. Since the coil shape regulating member 50 is a guide rail, it can be guided and inserted into the adjacent trapezoidal coils 10B and 10C without interference.

Note that the present invention is not limited to the above-described embodiment, and various applications are possible without departing from the spirit of the invention.
For example, in the present embodiment, the coil shape regulating member 13 is formed in a portion that abuts on the upper surface and the lower surface of the trapezoidal coil 10, but may be formed so as to abut on either the upper surface or the lower surface. This is because the twisting of the trapezoidal coil 10 can be prevented from occurring by contacting either the upper surface or the lower surface. In addition, when the coil shape control member 13 is formed on the upper surface and the lower surface, the prevention of winding twist can be minimized. This is because the upper and lower surfaces can be kept parallel by pressing the upper and lower surfaces.

  For example, in the present embodiment, it has been described that the trapezoidal coil 10 is wound and attached to the motor stator manufacturing apparatus 1. However, after the trapezoidal coil 10 is attached to the motor stator manufacturing apparatus 1, the trapezoidal coil 10 is twisted. State. That is, the trapezoidal coil 10 can be twisted by applying a force to the trapezoidal coil 10 attached to the motor stator manufacturing apparatus 1 in the circumferential direction of the motor stator.

  For example, as shown in FIG. 3, in the present embodiment, the shape of the coil restricting members 13A and 13B is rectangular and the clamp portions 132A and 132B are brought into contact with each other to keep the trapezoidal coil 10 in a parallel state. However, the shape of the coil restricting member 13A can be set such that, for example, the upper surface 102 of the trapezoidal coil 10 abuts at two points. This is because it becomes easier to maintain a parallel state by contacting the upper surface 102 at two points. Similarly, the coil restricting member 13B can be shaped to abut at two points.

DESCRIPTION OF SYMBOLS 1 Motor stator manufacturing apparatus 10 Trapezoid coil 13, 40, 50 Coil shape control member 30 Stator core 31 Teeth 32 Slot

Claims (8)

A stator core having a plurality of concave slots on the inner periphery and a plurality of teeth that become thinner toward the convex tip, and a rectangular conductor with a rectangular cross section disposed in the slot is bent and trapezoidally concentrated. Motor stator having a plurality of trapezoidal coils,
Having a coil shape regulating member for regulating the trapezoidal coil in a twisted state;
An apparatus for manufacturing a motor stator. In the motor stator manufacturing apparatus according to claim 1,
The coil shape regulating member clamps the upper surface and the lower surface of the trapezoidal coil, or the upper surface or the lower surface;
An apparatus for manufacturing a motor stator. In the motor stator manufacturing apparatus according to claim 1,
The coil shape regulating member grips a lead wire portion protruding from the trapezoidal coil;
An apparatus for manufacturing a motor stator. In the motor stator manufacturing apparatus according to claim 1,
The coil shape restricting member guides the outer peripheral surface of the trapezoidal coil with a guide rail;
An apparatus for manufacturing a motor stator. A stator core having a plurality of concave slots on the inner periphery and a plurality of teeth that become thinner toward the convex tip, and a rectangular conductor with a rectangular cross section disposed in the slot is bent and trapezoidally concentrated. A motor stator manufacturing method for manufacturing a motor stator having a plurality of trapezoidal coils,
The trapezoidal coil is regulated by a coil shape regulating member to be in a state of being twisted
Inserting the trapezoidal coil into the slot with the winding twisted;
The manufacturing method of the motor stator characterized by these. In the manufacturing method of the motor stator according to claim 5,
The coil shape regulating member clamps the upper surface and the lower surface of the trapezoidal coil, or the upper surface or the lower surface;
The manufacturing method of the motor stator characterized by these. In the manufacturing method of the motor stator according to claim 5,
The coil shape regulating member grips a lead wire portion protruding from the trapezoidal coil;
The manufacturing method of the motor stator characterized by these. In the manufacturing method of the motor stator according to claim 5,
The coil shape regulating member guides the outer peripheral surface of the trapezoidal coil with a guide rail;
The manufacturing method of the motor stator characterized by these.

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