Support device

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 Art

[0002] For example, a stator or a rotor may be manufactured by inserting a tip portion of a segment coil forming a segment coil unit into the insulating paper with the insulating paper inserted inside the slots of the core. For example, in Patent Document 1, the tip portion of the segment coil forming the segment coil unit is inserted into the insulating paper through a guide portion.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The applicant of the present application has found the following problems. In the technique of Patent Document 1, when the guide portion is inserted into the insulating paper, the guide portion may contact the insulating paper, and the insulating paper may be damaged.

[0005] The present disclosure has been made in view of such problems, and realizes a support device and a method for inserting a segment coil unit capable of suppressing damage to the insulating paper when inserting the tip portion of the segment coil forming the segment coil unit into the insulating paper.

Means for Solving the Problems

[0006] A support device according to an aspect of the present disclosure is a support device that supports a core when inserting a tip portion of a segment coil forming a segment coil unit into the insulating paper with the insulating paper inserted into the slots of the core, A support mechanism comprising: a mounting portion on which the core is placed; a first fixing portion that supports the mounting portion; and a first support portion disposed between the mounting portion and the first fixing portion, for allowing movement of the core on the mounting portion on a plane perpendicular to the axial direction relative to the first fixing portion; A holding mechanism comprising: a holding portion inserted into the insulating paper to maintain the shape of the insulating paper; a support portion supporting the holding portion; a second fixing portion supporting the support portion; and a second support portion disposed between the support portion and the second fixing portion, for allowing movement of the core in the support portion on a plane perpendicular to the axial direction of the core relative to the second fixing portion; It is equipped with.

[0007] A method for inserting a segment coil unit according to one aspect of the present disclosure is a method for inserting the tip portion of a segment coil forming a segment coil unit into the interior of insulating paper with insulating paper inserted into the slot of a core, A step of placing the core on a mounting portion that allows movement on a plane perpendicular to the axial direction of the core, The process involves inserting a retaining portion, which is allowed to move on a plane perpendicular to the axial direction of the core, into the interior of the insulating paper in order to maintain the shape of the insulating paper, The steps include inserting the tip of the segment coil into the inside of the insulating paper, A step of moving the core on a plane perpendicular to the axial direction of the core via the aforementioned mounting portion and the holding portion so as to avoid contact between the tip of the segment coil and the insulating paper, It is equipped with. [Effects of the Invention]

[0008] According to this disclosure, it is possible to realize a support device and a method for inserting a segment coil unit that can suppress damage to insulating paper when inserting the tip of a segment coil forming a segment coil unit into the insulating paper. [Brief explanation of the drawing]

[0009] [Figure 1]This diagram illustrates how the tip of a segment coil forming a segment coil unit is inserted into a core using the holding mechanism of the support device according to the embodiment. [Figure 2] This is a diagram illustrating the configuration of the support mechanism of the support device according to the embodiment. [Figure 3] This is a diagram illustrating the configuration of the holding mechanism of the support device according to the embodiment. [Modes for carrying out the invention]

[0010] Specific embodiments applying this disclosure will be described in detail below with reference to the drawings. However, this disclosure is not limited to the following embodiments. Also, for clarity, the following description and drawings have been simplified as appropriate. Herein, for clarity, the following description will use a three-dimensional (XYZ) coordinate system.

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

[0012] Figure 2(a) is a perspective view showing the core supported by the support mechanism of the support device of this embodiment; Figure 2(b) is a diagram illustrating the arrangement of the support portion and the restricting portion in the support mechanism of the support device of this embodiment; Figure 2(c) shows the portion enclosed by the dashed line in Figure 2(a); and Figure 2(d) is a cross-sectional view taken along the BB arrow in Figure 2(b).

[0013] Figure 3(a) is a perspective view showing the holding mechanism of the support device of this embodiment; Figure 3(b) is a diagram illustrating the arrangement of the support portion and the restricting portion in the holding mechanism of the support device of this embodiment; Figure 3(c) is a diagram showing the portion enclosed by the dashed line in Figure 3(a); and Figure 3(d) is a cross-sectional view taken along the CC arrow in Figure 3(b).

[0014] As shown in Figure 1(a), the support device 1 of this embodiment is suitable for inserting the Z-axis end of each segment coil 2a in a segment coil unit 2, which is made up of segment coils 2a made by bending flat wire into a U-shape and arranging them in a cylindrical shape, into the inside of insulating paper 4 inserted into the inside of the slot 3a of the core 3. In this embodiment, the core 3 is made up 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 protrusion 11b, and a second protrusion 11c.

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

[0017] As shown in Fig. 2(a), the first protrusion 11b protrudes radially outward from the main body portion 11a. The first protrusion 11b is arranged so as to correspond to the arrangement of the mounting portion 3b formed on the core 3 for attaching the core 3 to the motor housing when viewed from the Z-axis direction. 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 radially outward from the main body portion 11a. And the second protrusion 11c extends in the circumferential direction of the main body portion 11a. The second protrusion 11c may be arranged at three or more locations at substantially equal intervals in the circumferential direction of the main body portion 11a as shown in Fig. 2(b).

[0019] For example, in the present embodiment, the second protrusions 11c are arranged at six locations. Here, as shown in Fig. 2(c), the portion where the +Z-side portion of the support portion 13 on the -Z side of the second protrusion 11c contacts may be formed of a metal plate 11d subjected to a surface treatment for reducing friction.

[0020] As shown in Fig. 2(a), the fixing portion 12 is arranged on the -Z side with respect to the mounting portion 11 and supports the mounting portion 11 via the support portion 13. The fixing portion 12 is fixed to, for example, an external jig (not shown). The fixing portion 12 includes a main body portion 12a and a protrusion 12b.

[0021] As shown in Fig. 2(a), the main body portion 12a is a cylindrical body having a substantially annular shape that is substantially equal to the main body portion 11a of the mounting portion 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 portion 11a of the mounting portion 11 and the center of the main body portion 12a of the fixing portion 12 are substantially overlapped.

[0022] The protruding portion 12b is positioned in a location corresponding to the second protruding portion 11c of the mounting portion 11 when viewed from the Z-axis direction, and protrudes radially outward from the main body portion 12a. Therefore, as shown in Figure 2(c), the second protruding portion 11c of the mounting portion 11 and the protruding portion 12b of the fixing portion 12 are positioned to substantially overlap in the Z-axis direction.

[0023] As shown in Figure 2(c), the support portion 13 is equipped with, for example, a ball roller. The support portion 13 is positioned between the mounting portion 11 and the fixing portion 12 with the ball portion 13a positioned on the Z-axis+ side. The Z-axis- side end of the support portion 13 is attached to the protruding portion 12b of the fixing portion 12.

[0024] The Z-axis+ end of the support portion 13 is in contact with the Z-axis-side surface of the second projection 11c of the mounting portion 11. At this time, as shown in Figure 2(c), 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 on the second projection 11c of the mounting portion 11.

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

[0026] The restricting portion 14 restricts the movement of the mounting portion 11 relative to the fixing 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 Figure 2(b). For example, in this embodiment, the restricting portion 14 is arranged at four locations adjacent to predetermined support portions 13 in the circumferential direction of the main body portion 11a of the mounting portion 11.

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

[0028] As shown in Figure 2(d), the bolt 14b is threaded into the screw hole 12c of the fixing part 12, with the bolt 14b passing through the regulating hole 14a from the Z-axis+ side via the washer 14e. Therefore, the bolt head 14f of the bolt 14b is positioned on the Z-axis+ side relative to the regulating hole 14a, and the Z-axis- side surface of the bolt head 14f is in contact with the Z-axis+ side surface of the mounting part 11 via the washer 14e.

[0029] As shown in Figure 2(d), the collar 14c extends approximately in the Z-axis direction, with the shaft portion 14g of the bolt 14b passing through the inside of the collar 14c, and the Z-axis positive side portion of the collar 14c passing through the inside of the regulating hole 14a, and is positioned between the washer 14e and the fixing portion 12.

[0030] The collar 14c is, for example, a roughly cylindrical body. As shown in Figure 2(d), the inner diameter of the collar 14c is approximately 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 regulating hole 14a.

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

[0032] As shown in Figure 2(d), the Z-axis side end of the collar 14c 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 relative to the fixing part 12 on the approximately XY plane can be restricted to the gap G1 between the restricting hole 14a and the collar 14c.

[0033] As shown in Figure 3(a), the holding mechanism 20 comprises a holding part 21, a support part 22, a fixing part (second fixing part) 23, a support part (second support part) 24, and a regulating part 25. The holding part 21 holds the shape of the insulating paper 4 inserted inside the slot 3a of the core 3. Incidentally, as shown in Figure 1(b), the insulating paper 4 is folded to conform to the circumferential shape of the slot 3a.

[0034] The holding portion 21 is located inside the support mechanism 10 when viewed from the Z-axis direction. The holding portion 21 comprises a cylindrical portion 21a and a pin 21b, as shown in Figures 1(a) and 3(a), for example. The cylindrical portion 21a has a substantially annular shape when 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 substantially coincide when viewed from the Z-axis direction.

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

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

[0037] Multiple pins (for example, three) arranged radially in the cylindrical portion 21a form a pin unit 21c, and these multiple pin units 21c are arranged circumferentially around the cylindrical portion 21a. In this case, each pin unit 21c is arranged circumferentially around the cylindrical portion 21a in a manner corresponding to the arrangement of the slots 3a of the core 3, as shown in Figure 1(a).

[0038] Then, as shown in Figure 1(b), when each pin unit 21c is inserted into the insulating paper 4 which is inserted into the slot 3a of the core 3, the pins 21b of the pin unit 21c are preferably arranged radially in the cylindrical portion 21a so that they are positioned radially outward, radially in the center, and radially inward of the core 3 in the slot 3a.

[0039] The support portion 22 supports the holding portion 21 via a drive unit (not shown) that moves the holding portion 21 in the Z-axis direction. The support portion 22 is positioned, for example, on the Z-axis side with respect to the support mechanism 10. As shown in Figure 3(a), the support portion 22 comprises a main body portion 22a and a cylindrical portion 22b.

[0040] The main body portion 22a is a plate that is substantially parallel to the XY plane and has a substantially ring shape when viewed from the Z-axis direction. Here, as shown in Figure 3(c), the portion of the main body portion 22a that contacts the Z-axis- side of the support portion 24 on the Z-axis- side is preferably formed of a metal plate 22c that has been treated with a friction-reducing surface treatment.

[0041] As shown in Figure 3(a), the cylindrical portion 22b has a substantially circular shape when viewed from the Z-axis direction. The cylindrical portion 22b protrudes substantially toward the Z-axis+ side from the radially inner end of the main body portion 22a and is inserted into the interior 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 and the centers of the main body portion 22a and the cylindrical portion 22b of the support portion 22 substantially coincide.

[0042] The holding portion 21 can be moved along the cylindrical portion 22b by the driving force of the drive unit in approximately the Z-axis direction. Here, the drive unit only needs to be equipped with a lifting device that can move the holding portion 21 in approximately the Z-axis direction.

[0043] As shown in Figure 3(a), the fixing portion 23 is positioned on the Z-axis side relative to the support portion 22 and supports the support portion 22 via the bearing portion 24. The fixing portion 23 is fixed to, for example, an external jig (not shown).

[0044] The fixing portion 23 is a plate that is substantially parallel to the XY plane and has a substantially annular shape that is substantially equal to the main body portion 22a of the support portion 22 when viewed from the Z-axis direction. In this case, the center of the main body portion 22a of the support portion 22 and the center of the fixing portion 23 substantially coincide when viewed from the Z-axis direction.

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

[0046] Then, as shown in Figure 3(c), the Z-axis+ end of the support portion 24 protrudes from the notch 23a of the fixing portion 23 toward 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 is in contact with the Z-axis- side surface of the metal plate 22c of the support portion 22.

[0047] The support portions 24 are preferably arranged in three or more locations at approximately equal intervals in the circumferential direction of the main body portion 22a of the support portion 22, as shown in Figure 3(b). With this configuration of support portions 24, the holding portion 21 is movable in approximately the XY plane relative to the fixing portion 23 via the support portion 22.

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

[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 in two or more locations at intervals in the circumferential direction of the main body portion 22a of the support portion 22, as shown in Figure 3(b). 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] As shown in Figure 3(d), the restricting portion 25 includes a restricting hole 25a, a through hole 25b, a collar 25c, a first bolt 25d, and a second bolt 25e. The restricting hole 25a penetrates the main body portion 22a of the support portion 22 in the Z-axis direction and has a substantially circular shape when viewed from the Z-axis direction, for example.

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

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

[0053] As shown in Figure 3(d), the base portion 25f has through holes 25h formed at intervals along its longitudinal direction, corresponding to the arrangement of the restricting holes 25a and through holes 25b. The through holes 25h have a substantially circular shape when viewed from the Z-axis direction, for example.

[0054] As shown in Figure 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 regulating hole 25a. The inner circumferential surface of the cylindrical portion 25g is continuous with the circumferential 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 through hole 25h in the center of the base portion 25f are approximately equal. Furthermore, when viewed from the Z-axis direction, the center of the inner diameter of the cylindrical portion 25g and the center of the through hole 25h in the center of the base portion 25f approximately overlap. The outer diameter of the cylindrical portion 25g is smaller than the diameter of the regulating hole 25a.

[0056] As shown in Figure 3(d), the first bolt 25d is screwed into the first threaded hole 23c of the fixing part 23, with the washer 25i passing through the cylindrical part 25g of the collar 25c and the central through hole 25h of the base part 25f from the Z-axis + side. At this time, as shown in Figure 3(d), 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.

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

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

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

[0060] With this configuration of the restricting portion 25, the movement of the support portion 22 relative to the fixing portion 23 in the approximately 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, we will explain the process of inserting the Z-axis end of the segment coil 2a, which forms 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.

[0062] First, the radially outer portion of 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, relative to the slot 3a of the core 3. Then, the mounting portion 3b of the core 3 is attached to the first protrusion 11b of the mounting portion 11 using bolts 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 to the Z-axis + side, and the pins 21b of the holding portion 21 are inserted into the insulating paper 4 inserted into each of the slots 3a of the core 3, as shown in Figure 1(b).

[0064] In this case, since the holding mechanism 20 is configured such that the holding portion 21 can move on a substantially 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 can move to avoid 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, if the operating resistance of the holding mechanism 20 when the holding portion 21 moves on a substantially XY plane via the support portion 22 is configured to be small with respect to the damaging load on the insulating paper 4, damage to the insulating paper 4 can be suppressed.

[0066] Furthermore, if 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 outward, radially inward, and radially inward of the core 3 within each insulating paper 4, the shape of the insulating paper 4 can be well maintained.

[0067] Next, as shown in Figure 1(a), the segment coil unit 2 is positioned on the Z-axis+ side relative to the support device 1. Then, the Z-axis- side end of the segment coil 2a that makes up the segment coil unit 2 is positioned on the Z-axis+ side relative to the internal region surrounded by the predetermined insulating paper 4.

[0068] Next, the segment coil unit 2 is moved toward the Z-axis side, and the Z-axis side end of the segment coil 2a is inserted into the predetermined insulating paper 4. At this time, the support mechanism 10 is configured such that the mounting portion 11 is movable on a substantially XY plane, and the holding mechanism 20 is configured such that the holding portion 21 is movable on a substantially XY plane.

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

[0070] In particular, if 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 with respect to the damaging load on 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 support portion 13 is in contact with the Z-axis side surface of the metal plate 11d on the second protrusion 11c of the mounting portion 11, or if, in the holding mechanism 20, the ball portion 24a of the support 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, because the shape of the insulating paper 4 is maintained by the pin 21b, deformation of the insulating paper 4 can be suppressed even if the Z-axis-side end of the segment coil 2a comes into contact with the Z-axis-+ side end of the insulating paper 4.

[0073] Subsequently, the segment coil unit 2 is moved toward the Z-axis side, further inserting the Z-axis side end of the segment coil 2a into the insulating paper 4. At the same time, for example, the holding part 21 of the holding mechanism 20 in the support device 1 is moved toward the Z-axis side, so that the pin 21b of the holding part 21 is removed from inside the insulating paper 4. This allows the Z-axis side end of the segment coil 2a that makes up the segment coil unit 2 to be inserted into the insulating paper 4.

[0074] Thus, in this embodiment, when inserting the support device 1 and segment coil unit 2 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 substantially on the XY plane to avoid 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 illustrative, and any configuration that allows the mounting portion 11 to move on the XY plane is acceptable. Similarly, the configuration of the holding mechanism 20 is illustrative, and any configuration that allows the holding portion 21 to move on the XY plane is acceptable. For example, the support portion is not limited to ball rollers, but may be composed of a pair of metal plates with a friction-reducing surface treatment.

[0076] Furthermore, the configuration of the holding portion 21 of the holding mechanism 20 in this embodiment is illustrative, and any configuration that can maintain the shape of the insulating paper 4 is acceptable.

[0077] This disclosure is not limited to the embodiments described above, and may be modified as appropriate without departing from the spirit of the invention. [Explanation of symbols]

[0078] 1 Support device 2 segment coil unit, 2a segment coil 3 cores, 3a slots 4. Insulating paper 10 Support mechanism, 11 Mounting part, 12 Fixing part, 13 Support part 20 Holding mechanism, 21 Holding section, 22 Supporting section, 23 Fixing section, 24 Supporting section

Claims

1. A support device for supporting the core when inserting the tip of a segment coil forming a segment coil unit into the inside of the insulating paper while insulating paper is inserted into the slot of the core, A support mechanism comprising: a mounting portion on which the core is placed; a first fixing portion that supports the mounting portion; a first support portion disposed between the mounting portion and the first fixing portion, which allows movement of the core on the mounting portion on a plane perpendicular to the axial direction relative to the first fixing portion; and a first restricting portion that restricts the movement of the mounting portion relative to the first fixing portion. A holding mechanism comprising: a holding portion inserted into the insulating paper to maintain the shape of the insulating paper; a support portion supporting the holding portion; a second fixing portion supporting the support portion; a second support portion disposed between the support portion and the second fixing portion, for allowing movement of the support portion on a plane perpendicular to the axial direction of the core relative to the second fixing portion; and a second restricting portion for restricting the movement of the support portion relative to the second fixing portion; Equipped with, A first metal plate, which has been treated with a friction-reducing surface treatment, is placed on the portion of the mounting portion or the first fixing portion that the ball roller of the first support portion contacts, so that the operating resistance of the support mechanism when the mounting portion moves is reduced compared to the damaging load on the insulating paper. A support device in which a second metal plate, which has been treated with a friction-reducing surface treatment, is placed in the portion of the support portion or the second fixing portion that the ball roller of the second support portion contacts, and the holding mechanism is configured such that the operating resistance of the holding mechanism when the support portion moves is reduced to the damage load on the insulating paper.

2. The first restricting part comprises a first restricting hole formed in the mounting part described above, a first bolt fixed to the first fixing part and passed through the first restricting hole, and a first collar fixed to the first fixing part and passed through the first restricting hole with the first bolt passed through it, thereby restricting the movement of the mounting part described above to the gap between the first restricting hole and the first collar. The support device according to claim 1, wherein the second restricting portion comprises a second restricting hole formed in the support portion, a second bolt fixed to the second fixing portion and passed through the second restricting hole, and a second collar having a cylindrical portion, fixed to the second fixing portion with the second bolt passed through the cylindrical portion, and the cylindrical portion passed through the second restricting hole, thereby restricting the movement of the support portion to the gap between the second restricting hole and the cylindrical portion of the second collar.

3. The outer peripheral edge of the core is placed on the mounting portion of the support mechanism. The support device according to claim 1 or 2, wherein the holding portion of the holding mechanism is arranged inside the support mechanism.

4. The holding part of the holding mechanism has a pin unit formed by a plurality of cylindrical pins, The support device according to claim 3, wherein the pin unit is arranged to correspond to the arrangement of slots in the core.

5. The support device according to claim 4, wherein the pin unit comprises a pin positioned radially outward from the slot of the core, a pin positioned radially in the center of the slot of the core, and a pin positioned radially inward from the slot of the core.

Images