Support device and method for inserting segment coil unit

Abstract

To provide a support device capable of suppressing damage to an insulation sheet when a tip unit of a segment coil is inserted into the insulation sheet.SOLUTION: A support device (1) includes a support mechanism (10) and a holding mechanism (20). The support mechanism includes: a loading unit (11) on which a core (3) is placed; a fixing unit (12) for supporting the loading unit (11); and a bearing unit (13) for allowing movement on a plane perpendicular to an axial direction of the core (3) in the loading unit (11). The holding mechanism includes: a holding unit (21) for holding a shape of an insulating sheet (4); a support unit (22) for supporting the holding unit (21); a fixing unit (23) for supporting the support unit (22); and a bearing unit (24) for allowing movement on a plane perpendicular to the axial direction of the core (3) in the support unit (22).SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a support device and a method for inserting a segment coil unit. [Background technology]

[0002] For example, a stator or rotor may be manufactured by inserting the tip of a segment coil constituting a segment coil unit into insulating paper with the insulating paper already inserted into the slot of a core. For example, in Patent Document 1, the tip of a segment coil constituting a segment coil unit is inserted into insulating paper via a guide portion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2021-151018 A Summary of the Invention [Problem to be solved by the invention]

[0004] The present applicant has found the following problem: With the technology of Patent Document 1, when the guide portion is inserted into the insulating paper, the guide portion may come into contact with the insulating paper, potentially damaging the insulating paper.

[0005] The present disclosure has been made in consideration of such problems, and provides a support device and a method for inserting a segment coil unit that can prevent damage to the insulating paper when inserting the tip of the segment coil that constitutes the segment coil unit into the insulating paper. [Means for solving the problem]

[0006] A support device according to one aspect of the present disclosure is a support device that supports a core when inserting a tip portion of a segment coil that constitutes a segment coil unit into an insulating paper with the insulating paper inserted into a slot of the core, the support device comprising: a support mechanism including a mounting portion on which the core is mounted, a first fixing portion that supports the mounting portion, and a first support portion that is disposed between the mounting portion and the first fixing portion and that allows movement of the core on the mounting portion relative to the first fixing portion on a plane perpendicular to an axial direction of the core; a retaining mechanism including: a retaining portion that is inserted into the insulating paper to retain the shape of the insulating paper; a support portion that supports the retaining portion; a second fixed portion that supports the support portion; and a second support portion that is disposed between the support portion and the second fixed portion and that allows movement of the support portion relative to the second fixed portion on a plane perpendicular to the axial direction of the core; Equipped with.

[0007] A method for inserting a segment coil unit according to one aspect of the present disclosure includes inserting a tip portion of a segment coil constituting a segment coil unit into an insulating paper in a state where the insulating paper is inserted into a slot of a core, the method comprising the steps of: placing the core on a placement section that allows the core to move on a plane perpendicular to an axial direction of the core; a step of inserting a holding portion into the insulating paper, the holding portion being allowed to move on a plane perpendicular to an axial direction of the core, in order to maintain the shape of the insulating paper; inserting a tip portion of the segment coil into the insulating paper; a step of moving the core via the placement portion and the holding portion on a plane perpendicular to an axial direction of the core so as to release contact between the tip portion of the segment coil and the insulating paper; Equipped with. Effect of the Invention

[0008] According to the present disclosure, it is possible to realize a support device and a method for inserting a segment coil unit that can suppress damage to the insulating paper when inserting the tip portion of the segment coil that constitutes the segment coil unit into the insulating paper. [Brief description of the drawings]

[0009] [Figure 1]A diagram to explain how the tip of a segment coil that constitutes a segment coil unit is inserted into a core using the holding mechanism of the support device of the embodiment. [Diagram 2] 5A to 5C are diagrams illustrating a configuration of a support mechanism of the support device according to the embodiment. [Diagram 3] 5A to 5C are diagrams for explaining the configuration of a holding mechanism of the support device according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, specific embodiments to which the present disclosure is applied will be described in detail with reference to the drawings. However, the present disclosure is not limited to the following embodiments. In addition, in order to clarify the description, the following description and drawings are appropriately simplified. Here, in the following description, in order to clarify the description, a three-dimensional (XYZ) coordinate system is used.

[0011] First, the configuration of the support device of this embodiment will be described. Figure 1(a) is a perspective view showing the arrangement relationship between the holding mechanism, the core, and the segment coil unit when inserting the tip of the segment coil constituting the segment coil unit into the core supported by the support device of this embodiment, Figure 1(b) is a view showing the part surrounded by the dashed line in Figure 1(a), and Figure 1(c) is a cross-sectional view taken along the line AA in Figure 1(b).

[0012] Figure 2(a) is an oblique view showing the state in which a core is supported by the support mechanism of the support device of this embodiment, Figure 2(b) is a diagram for explaining the arrangement of the support portion and the regulating portion in the support mechanism of the support device of this embodiment, Figure 2(c) is a diagram showing the portion surrounded by the dotted line in Figure 2(a), and Figure 2(d) is a cross-sectional view taken along the arrow BB in Figure 2(b).

[0013] Figure 3(a) is an oblique view showing the holding mechanism of the support device of this embodiment, Figure 3(b) is a diagram for explaining the arrangement of the support portion and the regulating portion in the holding mechanism of the support mechanism of this embodiment, Figure 3(c) is a diagram showing the portion surrounded by the dotted line in Figure 3(a), and Figure 3(d) is a cross-sectional view taken along arrow CC in Figure 3(b).

[0014] 1(a), the support device 1 of this embodiment is suitable for inserting the Z-axis negative end of each segment coil 2a in a segment coil unit 2 formed by arranging segment coils 2a, each segment coil 2a formed by bending a rectangular wire into a U-shape, into insulating paper 4 inserted into slots 3a of a core 3. Note that, in this embodiment, the core 3 is formed of a stator core in which electromagnetic steel sheets are laminated in the Z-axis direction, but it may also be a rotor core.

[0015] As shown in Figures 1(a), 2(a) and 3(a), the support device 1 includes a support mechanism 10 and a holding mechanism 20. The support mechanism 10 includes a mounting portion 11, a fixing portion (first fixing portion) 12, a support portion (first support portion) 13 and a regulating portion 14. The mounting portion 11 includes a main body portion 11a, a first protruding portion 11b and a second protruding portion 11c.

[0016] The main body 11a is a plate having a substantially annular shape when viewed from the Z-axis direction and substantially parallel to the XY plane, and for example, a radially outer portion of the core 3 is placed on the slot 3a of the core 3. The inner diameter of the main body 11a may be, for example, slightly larger than the diameter of a circle formed by connecting the radially outer ends of the core 3 in the adjacent slots 3a of the core 3. The outer diameter of the main body 11a may be, for example, equal to or larger than the outer diameter of the core 3.

[0017] 2(a), the first protrusion 11b protrudes from the main body 11a radially outward of the main body 11a. When viewed from the Z-axis direction, the first protrusion 11b is disposed so as to correspond to the arrangement of the mounting portion 3b formed on the core 3 for mounting the core 3 to the motor housing. The mounting portion 3b of the core 3 is attached to the first protrusion 11b using, for example, a bolt 15.

[0018] As shown in Fig. 2(a), the second protrusion 11c protrudes from the main body 11a radially outward of the main body 11a. The second protrusion 11c extends in the circumferential direction of the main body 11a. As shown in Fig. 2(b), the second protrusion 11c is preferably disposed at three or more locations at approximately equal intervals in the circumferential direction of the main body 11a.

[0019] For example, in this embodiment, the second protrusions 11c are arranged at six locations. Here, as shown in Fig. 2(c), the portion of the second protrusions 11c on the Z-axis negative side that comes into contact with the Z-axis positive side portion of the support portion 13 may be formed of a metal plate 11d that has been subjected to a surface treatment to reduce friction.

[0020] 2(a), the fixing part 12 is disposed on the negative side of the Z axis with respect to the mounting part 11, and supports the mounting part 11 via a support part 13. The fixing part 12 is fixed to, for example, an external jig (not shown). The fixing part 12 includes a main body part 12a and a protruding part 12b.

[0021] 2(a), the main body 12a is a cylinder having a substantially annular shape substantially equal to that of the main body 11a of the mounting part 11 when viewed from the Z-axis direction, and extends substantially in the Z-axis direction. At this time, when viewed from the Z-axis direction, the center of the main body 11a of the mounting part 11 and the center of the main body 12a of the fixing part 12 substantially overlap with each other.

[0022] The protrusion 12b is disposed at a position corresponding to the second protrusion 11c of the mounting portion 11 when viewed from the Z-axis direction, and protrudes from the main body portion 12a to the outside in the radial direction of the main body portion 12a. Therefore, as shown in Fig. 2(c), the second protrusion 11c of the mounting portion 11 and the protrusion 12b of the fixing portion 12 are disposed so as to substantially overlap with each other in the Z-axis direction.

[0023] 2(c), the support portion 13 is provided with, for example, a ball roller. The support portion 13 is disposed between the mounting portion 11 and the fixed portion 12 with the ball portion 13a disposed on the +Z-axis side. The end portion of the support portion 13 on the -Z-axis side is attached to the protruding portion 12b of the fixed portion 12.

[0024] The end of the support portion 13 on the Z-axis + side is in contact with the Z-axis - side surface of the second protrusion 11c of the mounting portion 11. At this time, it is preferable that the ball portion 13a of the support portion 13 is in contact with the Z-axis - side surface of the metal plate 11d of the second protrusion 11c of the mounting portion 11, as shown in FIG. 2(c).

[0025] With such a configuration of the support portion 13, the mounting portion 11 can move substantially on the XY plane relative to the fixed portion 12. In this case, it is preferable that the support mechanism 10 is configured so that the operating resistance of the support mechanism 10 when the mounting portion 11 moves substantially on the XY plane is small relative to the damaging load of the insulating paper 4. Note that the support portion 13 may be disposed inversely in the Z-axis direction so that the ball portion 13a of the support portion 13 contacts the surface of the protruding portion 12b of the fixed portion 12 on the Z-axis + side.

[0026] The restricting portion 14 restricts movement of the mounting portion 11 relative to the fixed portion 12. The restricting portion 14 may be arranged at two or more locations spaced apart in the circumferential direction of the main body portion 11a of the mounting portion 11, as shown in Fig. 2(b), for example. For example, in this embodiment, the restricting portion 14 is arranged at four locations so as to be adjacent to predetermined support portions 13 in the circumferential direction of the main body portion 11a of the mounting portion 11.

[0027] 2(d), the restricting portion 14 includes a restricting hole 14a, a bolt 14b, a collar 14c, and a jig 14d. The restricting hole 14a penetrates the second protruding portion 11c of the mounting portion 11 substantially in the Z-axis direction, and has, for example, a substantially circular shape when viewed from the Z-axis direction.

[0028] 2(d), the bolt 14b is threaded into the screw hole 12c of the fixing part 12 while being passed through the restriction hole 14a via the washer 14e from the Z-axis + side. Therefore, the bolt head 14f of the bolt 14b is disposed on the Z-axis + side with respect to the restriction hole 14a, and the Z-axis - side surface of the bolt head 14f contacts the Z-axis + side surface of the mounting part 11 via the washer 14e.

[0029] As shown in FIG. 2(d), the collar 14c extends substantially in the Z-axis direction, and is disposed between the washer 14e and the fixed portion 12 with the shaft portion 14g of the bolt 14b being passed through the inside of the collar 14c and the Z-axis + side portion of the collar 14c being passed through the inside of the restricting hole 14a.

[0030] The collar 14c is, for example, a substantially cylindrical body. As shown in Fig. 2(d), the inner diameter of the collar 14c is substantially equal to the diameter of the shaft portion 14g of the bolt 14b, and the outer diameter of the collar 14c is smaller than the diameter of the restriction hole 14a.

[0031] 2(d), the jig 14d is attached to the surface on the Z-axis positive side of the fixing part 12 in order to hold the collar 14c. The jig 14d is, for example, a block body, and has a through hole 14h that passes through the jig 14d approximately in the Z-axis direction.

[0032] 2(d), the negative end of the collar 14c on the Z-axis is inserted into the through hole 14h. The diameter of the through hole 14h is approximately equal to the outer diameter of the collar 14c. With this configuration of the restricting part 14, the movement of the mounting part 11 with respect to the fixed part 12 on approximately the XY plane can be restricted to the gap G1 between the restricting hole 14a and the collar 14c.

[0033] As shown in Fig. 3(a), the holding mechanism 20 includes a holding portion 21, a support portion 22, a fixing portion (second fixing portion) 23, a bearing portion (second bearing portion) 24, and a restricting portion 25. The holding portion 21 maintains the shape of the insulating paper 4 inserted inside the slot 3a of the core 3. Incidentally, the insulating paper 4 is bent so as to follow the circumferential shape of the slot 3a, as shown in Fig. 1(b).

[0034] The holding portion 21 is disposed inside the support mechanism 10 as viewed from the Z-axis direction. The holding portion 21 includes a cylindrical portion 21a and a pin 21b, as shown in Fig. 1(a) and Fig. 3(a), for example. The cylindrical portion 21a has a substantially annular shape as viewed from the Z-axis direction. In this case, the center of the cylindrical portion 21a and the center of the main body portion 11a of the mounting portion 11 in the support mechanism 10 are substantially overlapped as viewed from the Z-axis direction.

[0035] The inner diameter of the cylindrical portion 21a may be, for example, approximately equal to the diameter of a circle formed by connecting the radially inner ends of the core 3 in adjacent slots 3a of the core 3. The outer diameter of the cylindrical portion 21a may be, for example, approximately equal to the diameter of a circle formed by connecting the radially outer ends of the core 3 in adjacent slots 3a of the core 3.

[0036] The pin 21b is, for example, as shown in Fig. 3(a), a substantially cylindrical body that protrudes from the cylindrical portion 21a toward the +Z-axis side. As shown in Fig. 1(b), the pin 21b has a diameter substantially equal to the width dimension of the core 3 in the circumferential direction of the slot 3a of the core 3.

[0037] A plurality of pins 21b (e.g., three pins) arranged in the radial direction of the cylindrical portion 21a form a pin unit 21c, and the plurality of pin units 21c are arranged in the circumferential direction of the cylindrical portion 21a. At this time, each pin unit 21c is arranged in the circumferential direction of the cylindrical portion 21a so as to correspond to the arrangement of the slots 3a of the core 3, as shown in FIG. 1(a).

[0038] As shown in FIG. 1(b), when each pin unit 21c is inserted into the insulating paper 4 inserted into the slot 3a of the core 3, the pins 21b of the pin unit 21c are preferably arranged radially of the tubular portion 21a so as to be positioned radially outside, radially in the center, and radially inside of the core 3 in the slot 3a.

[0039] The support part 22 supports the holding part 21, for example, via a drive part (not shown) that moves the holding part 21 in the Z-axis direction. The support part 22 is disposed, for example, on the negative side of the Z-axis with respect to the support mechanism 10. As shown in Fig. 3(a), the support part 22 includes a main body part 22a and a cylindrical part 22b.

[0040] The main body 22a is a plate body having a substantially annular shape as viewed from the Z-axis direction and substantially parallel to the XY plane. Here, as shown in Fig. 3(c), the portion on the Z-axis negative side of the main body 22a that comes into contact with the Z-axis positive side portion of the support 24 may be formed of a metal plate 22c that has been subjected to a surface treatment to reduce friction.

[0041] 3(a), the cylindrical portion 22b has a substantially circular shape when viewed from the Z-axis direction. The cylindrical portion 22b protrudes from a radially inner end of the main body portion 22a toward the Z-axis + side, and is inserted into the inside of the holding portion 21. At this time, when viewed from the Z-axis direction, the center of the cylindrical portion 21a of the holding portion 21 substantially overlaps with the center of the main body portion 22a and the center of the cylindrical portion 22b of the support portion 22.

[0042] The holding part 21 can be moved along such cylindrical part 22b in approximately the Z-axis direction by the driving force of the driving part. Here, the driving part may include a lifting device that can move the holding part 21 in approximately the Z-axis direction.

[0043] 3(a), the fixing part 23 is disposed on the negative side of the Z axis with respect to the supporting part 22, and supports the supporting part 22 via a bearing part 24. The fixing part 23 is fixed to, for example, an external jig (not shown).

[0044] The fixed portion 23 is a plate member approximately parallel to the XY plane and having an approximately annular shape as viewed from the Z-axis direction as the main body portion 22a of the support portion 22. At this time, the center of the main body portion 22a of the support portion 22 and the center of the fixed portion 23 approximately overlap with each other as viewed from the Z-axis direction.

[0045] 3(c), the support portion 24 includes, for example, a ball roller. The support portion 24 is disposed between the main body portion 22a of the support portion 22 and the fixed portion 23, with the ball portion 24a disposed on the +Z-axis side. The support portion 24 is fixed to the surface of the fixed portion 23 on the -Z-axis side, for example, with the support portion 24 passing through the notch portion 23a of the fixed portion 23 from the -Z-axis side.

[0046] 3(c), the end of the support portion 24 on the Z-axis + side protrudes from the notch portion 23a of the fixed portion 23 to the Z-axis + side and contacts the Z-axis - side surface of the main body portion 22a of the support portion 22. At this time, it is preferable that the ball portion 24a of the support portion 24 contacts the Z-axis - side surface of the metal plate 22c of the support portion 22.

[0047] 3(b), it is preferable that the support parts 24 are arranged at three or more locations at approximately equal intervals in the circumferential direction of the main body part 22a of the support part 22. With such a configuration of the support parts 24, the holding part 21 is movable relative to the fixed part 23 via the support parts 22 approximately on the XY plane.

[0048] In this case, it is preferable that the holding mechanism 20 is configured so that the operating resistance of the holding mechanism 20 when the holding portion 21 moves substantially on the XY plane via the support portion 22 is small relative to the damaging load of the insulating paper 4. Note that the support portion 24 may be disposed inversely in the Z-axis direction so that the ball portion 24a of the support portion 24 contacts the surface of the fixed portion 23 on the Z-axis + side.

[0049] The restricting portion 25 restricts the movement of the support portion 22 relative to the fixed portion 23. The restricting portion 25 may be arranged at two or more locations spaced apart in the circumferential direction of the main body portion 22a of the support portion 22, as shown in Fig. 3(b), for example. For example, in this embodiment, the restricting portion 25 is arranged between the support portions 24 in the circumferential direction of the main body portion 22a of the support portion 22.

[0050] 3(d), the restriction portion 25 includes a restriction hole 25a, a through hole 25b, a collar 25c, a first bolt 25d, and a second bolt 25e. The restriction hole 25a penetrates the main body portion 22a of the support portion 22 in the Z-axis direction, and has, for example, a substantially circular shape when viewed from the Z-axis direction.

[0051] 3(d), the through hole 25b penetrates the main body portion 22a of the support portion 22 in the Z-axis direction and has, for example, a substantially circular shape when viewed from the Z-axis direction. The through hole 25b is disposed so as to sandwich the restriction hole 25a in the circumferential direction of the main body portion 22a of the support portion 22.

[0052] 3(d), the collar 25c includes a base portion 25f and a cylindrical portion 25g. The base portion 25f is, for example, a plate body having a substantially rectangular shape when viewed from the Z-axis direction and substantially parallel to the XY plane, and is housed in a recess 23b formed on the surface of the fixed portion 23 on the Z-axis + side.

[0053] 3(d), through holes 25h are formed in the base 25f at intervals in the longitudinal direction of the base 25f so as to correspond to the arrangement of the restriction holes 25a and the through holes 25b. The through holes 25h have, for example, a substantially circular shape when viewed from the Z-axis direction.

[0054] As shown in Fig. 3(d), the cylindrical portion 25g has a substantially annular shape when viewed from the Z-axis direction. The cylindrical portion 25g protrudes from the base portion 25f toward the Z-axis + side, and the Z-axis + side portion of the cylindrical portion 25g is inserted into the restricting hole 25a. The inner peripheral surface of the cylindrical portion 25g is continuous with the peripheral surface of the central through-hole 25h of the base portion 25f.

[0055] Therefore, the inner diameter of the cylindrical portion 25g and the diameter of the central through-hole 25h of the base portion 25f are approximately equal. When viewed from the Z-axis direction, the center of the inner diameter of the cylindrical portion 25g and the center of the central through-hole 25h of the base portion 25f approximately overlap. The outer diameter of the cylindrical portion 25g is smaller than the diameter of the restriction hole 25a.

[0056] As shown in Fig. 3(d), the first bolt 25d is threaded into the first screw hole 23c of the fixing part 23 in a state where it is passed through the cylindrical part 25g of the collar 25c and the central through hole 25h of the base part 25f via the washer 25i from the Z-axis + side. At this time, the diameter of the shaft part 25j of the first bolt 25d is approximately equal to the inner diameter of the cylindrical part 25g of the collar 25c and the diameter of the central through hole 25h of the base part 25f, as shown in Fig. 3(d).

[0057] As shown in FIG. 3(d), the bolt head 25k of the first bolt 25d is positioned on the Z-axis + side with respect to the restricting hole 25a formed in the main body 22a of the support part 22, and the Z-axis - side surface of the bolt head 25k contacts the Z-axis + side surface of the support part 22 via the washer 25i.

[0058] As shown in FIG. 3(d), the second bolt 25e is passed through the through hole 25b formed in the main body 22a of the support part 22 and through holes 25h on both sides of the base 25f of the collar 25c from the Z-axis + side via a washer 25l, and then screwed into the second screw hole 23d of the fixing part 23.

[0059] At this time, the diameter of the shaft 25m of the second bolt 25e is approximately equal to the diameter of the through hole 25h of the base 25f of the collar 25c, as shown in Fig. 3(d). The bolt head 25n and the washer 25l of the second bolt 25e are housed in the through hole 25b formed in the main body 22a of the support part 22 so as not to come into contact with the support part 22 when the support part 22 moves on the XY plane relative to the fixed part 23.

[0060] With such a configuration of the restricting portion 25, movement of the support portion 22 with respect to the fixed portion 23 on approximately the XY plane can be restricted to the gap G2 between the restricting hole 25a and the cylindrical portion 25g of the collar 25c.

[0061] Next, the process of inserting the negative end of the Z-axis of the segment coil 2a constituting the segment coil unit 2 into the insulating paper 4 inserted into the slot 3a of the core 3 using the support device 1 of this embodiment will be described.

[0062] First, a portion of the core 3 that is radially outward relative to the slot 3a in the core 3 is placed on the main body 11a of the mounting portion 11 of the support mechanism 10 in the support device 1. Then, the mounting portion 3b of the core 3 is attached to the first protrusion 11b of the mounting portion 11 using the bolt 15. This fixes the core 3 to the support mechanism 10.

[0063] Next, for example, the holding portion 21 of the holding mechanism 20 in the support device 1 is moved toward the + side of the Z axis, and the pin 21b of the holding portion 21 is inserted into the insulating paper 4 inserted into each slot 3a of the core 3, as shown in Figure 1(b).

[0064] At this time, since the holding mechanism 20 is configured so that the holding portion 21 can move approximately on the XY plane via the support portion 22, even if the pin 21b of the holding portion 21 comes into contact with the insulating paper 4, the holding portion 21 moves to prevent contact between the pin 21b of the holding portion 21 and the insulating paper 4, thereby suppressing damage to the insulating paper 4.

[0065] In particular, when the operating resistance of the holding mechanism 20 when the holding portion 21 moves approximately on the XY plane via the support portion 22 is configured to be small relative to the damaging load of the insulating paper 4, damage to the insulating paper 4 can be suppressed.

[0066] Furthermore, when the pins 21b have a diameter approximately equal to the circumferential width dimension of the core 3 in the slot 3a of the core 3 and are positioned radially outside, radially center and radially inside the core 3 within each insulating paper 4, the shape of the insulating paper 4 can be well maintained.

[0067] 1(a), the segment coil unit 2 is placed on the +Z-axis side with respect to the support device 1. Then, the end of the segment coil 2a constituting the segment coil unit 2 on the -Z-axis side is placed on the +Z-axis side with respect to the internal region surrounded by a predetermined insulating paper 4.

[0068] Next, the segment coil unit 2 is moved to the negative side of the Z axis, and the negative end of the segment coil 2a on the Z axis is inserted inside the predetermined insulating paper 4. At this time, the support mechanism 10 is configured so that the mounting part 11 can move approximately on the XY plane, and the holding mechanism 20 is configured so that the holding part 21 can move approximately on the XY plane.

[0069] Therefore, as shown in Figure 1(c), even if the end of the segment coil 2a on the negative side of the Z axis comes into contact with the end of the insulating paper 4 on the positive side of the Z axis, the mounting portion 11 of the support mechanism 10 and the holding portion 21 of the holding mechanism 20 move to prevent contact between the segment coil 2a and the insulating paper 4, thereby suppressing damage to the insulating paper 4.

[0070] In particular, when the operating resistance of the support mechanism 10 when the mounting portion 11 of the support mechanism 10 moves, and the operating resistance of the holding mechanism 20 when the holding portion 21 of the holding mechanism 20 moves via the support portion 22 are configured to be small relative to the damaging load of the insulating paper 4, damage to the insulating paper 4 can be suppressed.

[0071] In this case, if, in the support mechanism 10, the ball portion 13a of the bearing portion 13 is in contact with the Z-axis -side surface of the metal plate 11d at the second protrusion 11c of the mounting portion 11, or if, in the holding mechanism 20, the ball portion 24a of the bearing portion 24 is in contact with the Z-axis -side surface of the metal plate 22c of the support portion 22, the operating resistance of the support mechanism 10 and the holding mechanism 20 can be reduced, and damage to the insulating paper 4 can be further suppressed.

[0072] Furthermore, since the shape of the insulating paper 4 is maintained by the pin 21b, even if the end of the segment coil 2a on the negative side of the Z axis comes into contact with the end of the insulating paper 4 on the positive side of the Z axis, deformation of the insulating paper 4 can be suppressed.

[0073] Thereafter, the segment coil unit 2 is moved to the negative side of the Z axis to further insert the negative end of the segment coil 2a into the insulating paper 4, while, for example, the holding portion 21 of the holding mechanism 20 in the support device 1 is moved to the negative side of the Z axis to remove the pin 21b of the holding portion 21 from inside the insulating paper 4. This allows the negative end of the Z axis of the segment coil 2a constituting the segment coil unit 2 to be inserted into the insulating paper 4.

[0074] In this way, in the present embodiment, when the Z-axis -side end of the segment coil 2a is inserted into the insulating paper 4, even if the Z-axis -side end of the segment coil 2a comes into contact with the insulating paper 4, the mounting portion 11 of the support mechanism 10 and the holding portion 21 of the holding mechanism 20 move approximately in the XY plane to prevent contact between the segment coil 2a and the insulating paper 4, thereby suppressing damage to the insulating paper 4.

[0075] The configuration of the support mechanism 10 in this embodiment is an example, and may be any configuration that allows the placement unit 11 to move on the XY plane. The configuration of the holding mechanism 20 is also an example, and may be any configuration that allows the holding unit 21 to move on the XY plane. Therefore, for example, the support unit is not limited to ball rollers, and may be configured with a pair of metal plates that have been subjected to a surface treatment to reduce friction.

[0076] Furthermore, the configuration of the holding portion 21 of the holding mechanism 20 in this embodiment is merely an example, and any configuration that can hold the shape of the insulating paper 4 may be used.

[0077] The present disclosure is not limited to the above-described embodiment, and can be modified as appropriate without departing from the spirit and scope of the present disclosure. [Explanation of symbols]

[0078] 1 Support device 2 segment coil unit, 2a segment coil 3 cores, 3a slot 4. Insulating paper 10 Support mechanism, 11 Placement part, 12 Fixation part, 13 Support part 20 holding mechanism, 21 holding part, 22 supporting part, 23 fixing part, 24 supporting part

Claims

1. A support device that supports a core when inserting a tip portion of a segment coil that constitutes a segment coil unit into an insulating paper with the insulating paper inserted into a slot of the core, comprising: a support mechanism including a mounting portion on which the core is mounted, a first fixing portion that supports the mounting portion, and a first support portion that is disposed between the mounting portion and the first fixing portion and that allows movement of the core on the mounting portion relative to the first fixing portion on a plane perpendicular to an axial direction of the core; a retaining mechanism including: a retaining portion that is inserted into the insulating paper to retain the shape of the insulating paper; a support portion that supports the retaining portion; a second fixed portion that supports the support portion; and a second support portion that is disposed between the support portion and the second fixed portion and that allows movement of the support portion relative to the second fixed portion on a plane perpendicular to the axial direction of the core; A support device comprising:

2. The supporting device according to claim 1 , wherein the holding mechanism includes a drive unit that moves the holding portion in the axial direction of the core.

3. An outer peripheral edge portion of the core is placed on a placement portion of the support mechanism, The support device according to claim 1 , wherein the holding portion of the holding mechanism is disposed inside the support mechanism.

4. A method for inserting a tip portion of a segment coil that constitutes a segment coil unit into an insulating paper in a state where the insulating paper is inserted into a slot of a core, comprising: placing the core on a placement section that allows the core to move on a plane perpendicular to an axial direction of the core; a step of inserting a holding portion into the insulating paper, the holding portion being allowed to move on a plane perpendicular to an axial direction of the core, in order to maintain the shape of the insulating paper; inserting a tip portion of the segment coil into the insulating paper; a step of moving the core via the placement portion and the holding portion on a plane perpendicular to an axial direction of the core so as to release contact between the tip portion of the segment coil and the insulating paper; A method for inserting a segment coil unit comprising:

5. The segment coil unit insertion method according to claim 4 , further comprising a step of removing the retaining portion from inside the insulating paper in conjunction with the insertion of the tip portion of the segment coil.

Images