JP2017070015A - Stator and manufacturing method of stator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stator which can prevent a coil and an insulation member provided so as to cover the coil form being damaged when an inner peripheral side core is fitted to an outer peripheral side core.SOLUTION: A stator 100 comprises: a coil 40 that is provided in a slot 11; an insulation member 44 that is provided so as to cover the coil 40; and a thin plate-like protection member 45 that is provided between the insulation member 44 and a surface 20a facing the coil 40 of an outer peripheral side core 20, and protects the outer peripheral side core 20 from interfering with the insulation member 44 when an inner peripheral side core fitting part 31 is fitted to an outer peripheral core fitting part 21.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a stator and a method for manufacturing the stator.

  Conventionally, a stator including an outer peripheral core and an inner peripheral core and a method for manufacturing the stator are known (see, for example, Patent Document 1).

  In the stator described in Patent Document 1, a plurality of yoke core portions (outer peripheral core) positioned on the outer peripheral side with respect to the slot and a plurality of tea score portions positioned on the circumferential direction side of the slot and connecting the yoke core portions to each other. A stator provided with (inner peripheral side core) is disclosed. This stator is configured such that a yoke core portion is fitted between adjacent tea score portions in a state where coils are arranged in a plurality of tea score portions.

JP 2010-233387 A

  However, since the stator of Patent Document 1 is configured so that the yoke core portion is fitted between the adjacent tee score portions in a state where the coils are arranged in the plurality of tee score portions, the adjacent tee scores are arranged. When the yoke core part (outer peripheral side core) is fitted between the parts (inner peripheral side core), the yoke core part may collide with the coil and the insulating member provided so as to cover the coil. For this reason, there exists a problem that the insulating member provided so that a coil and a coil may be damaged may be damaged.

  The present invention has been made to solve the above-described problems, and one object of the present invention is to cover a coil and the coil when the inner peripheral core is fitted to the outer peripheral core. A stator and a method for manufacturing the stator that can prevent the insulating member provided from being damaged are provided.

  In order to achieve the above object, the stator according to the first aspect of the present invention is disposed on the outer peripheral side of the slot, and has an outer peripheral side core fitting portion and an outer peripheral side core constituting the yoke portion, and an outer peripheral side core. On the inner circumference side, the inner circumference core that has the inner circumference side core fitting portion fitted to the outer circumference side core fitting portion and that constitutes the teeth portion, the coil disposed in the slot, and the coil are covered. The outer core is provided between the insulating member provided, the insulating member, and the surface facing the coil of the outer core, and when the inner core fitting portion is fitted to the outer core fitting portion. And a thin plate-like protective member for preventing the insulating member from interfering with each other.

  In the stator according to the first aspect of the present invention, as described above, the stator is provided between the insulating member and the surface facing the coil of the outer peripheral side core, and the inner peripheral side core fitting portion is disposed on the outer peripheral side core fitting portion. A thin plate-like protective member for preventing the outer peripheral side core and the insulating member from interfering with each other is provided. As a result, when the outer peripheral side core fitting part is fitted to the inner peripheral side core fitting part, the outer peripheral side core and the insulating member provided so as to cover the coil are prevented from colliding with the protective member. Is done. As a result, when the inner peripheral core is fitted to the outer peripheral core, the coil and the insulating member provided so as to cover the coil can be prevented from being damaged.

  A stator manufacturing method according to a second aspect of the present invention includes an inner peripheral side core fitting portion that is fitted to an outer peripheral side core fitting portion of an outer peripheral side core disposed on the outer peripheral side of the slot, and a teeth portion. The step of attaching the coil to the inner peripheral side core constituting the coil interferes with the insulating member provided to cover the outer peripheral side core and the coil on the side facing the outer peripheral side core of the coil attached to the inner peripheral side core. A step of disposing a thin plate-shaped protective member for preventing the outer peripheral core from moving in the direction of the rotation axis so that the surface of the protective member facing the coil of the outer peripheral core slides on the surface of the protective member. And inserting the inner peripheral side core fitting portion of the inner peripheral side core into the outer peripheral side core fitting portion of the outer peripheral side core on the inner peripheral side of the outer peripheral side core.

  In the stator manufacturing method according to the second aspect of the present invention, as described above, the insulation provided to cover the outer peripheral side core and the coil on the side facing the outer peripheral side core of the coil attached to the inner peripheral side core. A step of disposing a thin plate-like protective member for preventing interference with the member, and the outer core so that the surface facing the coil of the outer core is slid relative to the surface of the protective member. A step of fitting the inner peripheral side core fitting portion of the inner peripheral side core to the outer peripheral side core fitting portion of the outer peripheral side core on the inner peripheral side of the outer peripheral side core by inserting along the rotation axis direction; Is provided. As a result, when the outer peripheral side core fitting part is fitted to the inner peripheral side core fitting part, the outer peripheral side core and the insulating member provided so as to cover the coil are prevented from colliding with the protective member. Is done. As a result, it is possible to provide a stator manufacturing method capable of preventing the coil and the insulating member provided so as to cover the coil from being damaged when the inner peripheral core is fitted to the outer peripheral core. Can do.

  According to the present invention, as described above, when the inner peripheral side core is fitted to the outer peripheral side core, it is possible to prevent the coil and the insulating member provided so as to cover the coil from being damaged.

It is sectional drawing of the stator by one Embodiment of this invention. It is the figure which looked at the stator (protective member) by one Embodiment of this invention from the rotating shaft direction. It is the figure which looked at the stator core by one Embodiment of this invention from the rotating shaft direction. It is the figure which looked at the outer peripheral side core by one Embodiment of this invention from the rotating shaft direction. It is the figure which looked at the inner peripheral side core by one Embodiment of this invention from the rotating shaft direction. It is the figure which looked at the coil by one Embodiment of this invention from the rotating shaft direction. It is sectional drawing of the insulation member by one Embodiment of this invention. It is the figure which looked at the end surface plate by one Embodiment of this invention from the rotating shaft direction. It is a figure which shows the state (after the movement of an end surface plate) which has arrange | positioned the end surface plate to the stator core by one Embodiment of this invention. It is a figure which shows the state (before the movement of an end surface plate) which has arrange | positioned the end surface plate to the stator core by one Embodiment of this invention. It is the figure which looked at the state which attached the mandrel to the inner peripheral side core by one Embodiment of this invention from the rotating shaft direction. It is sectional drawing of the state which attached the mandrel to the inner peripheral core by one Embodiment of this invention. It is a figure for demonstrating the process of correcting the shape of an inner peripheral side core. It is the figure which looked at the jig | tool 230 (250) from the rotating shaft direction. It is a figure for demonstrating the process of arrange | positioning a protection member in the side facing the outer peripheral side core of the coil attached to the inner peripheral side core. It is a figure which shows a part of FIG. It is a figure for demonstrating the process of fitting an inner peripheral side core fitting part to an outer peripheral side core fitting part. It is the figure which looked at the stator (protective member) by the 1st modification of one Embodiment of this invention from the rotating shaft direction. It is the figure which looked at the end surface board by the 2nd modification of one Embodiment of this invention from the rotating shaft direction. It is sectional drawing of the stator by the 3rd modification of one Embodiment of this invention.

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

[This embodiment]
(Structure of stator)
With reference to FIGS. 1-10, the structure of the stator 100 by this embodiment is demonstrated.

  As shown in FIG. 1, the stator 100 includes a stator core 10 and a coil 40. As shown in FIGS. 2 and 3, the stator core 10 includes an outer peripheral core 20 and an inner peripheral core 30.

  As shown in FIG. 4, the outer peripheral core 20 is formed by laminating substantially annular steel plates in the rotation axis direction (Z direction). Moreover, the outer peripheral side core 20 has the outer peripheral side core fitting part 21 arrange | positioned at the outer peripheral side of the slot 11 (refer FIG. 3). The outer peripheral side core fitting part 21 is provided on the inner peripheral side of the outer peripheral side core 20, and an inner peripheral side core fitting part 31 described later is configured to be fitted in the circumferential direction and the radial direction. Moreover, the outer peripheral side core fitting part 21 is comprised by the groove part 21a extended in a rotating shaft direction (Z direction). A tooth portion 21b is provided between the adjacent groove portions 21a. Moreover, the outer peripheral side core fitting part 21 (groove part 21a) is provided with two or more (48 in this embodiment). Further, the outer core 20 constitutes a yoke portion 22.

  Moreover, the outer peripheral side core 20 has the fastening hole 23 in which fixing tools (not shown), such as a volt | bolt, are inserted. A plurality of fastening holes 23 (three in this embodiment) are provided. A stator (not shown) is inserted into the fastening hole 23 and fastened, whereby the stator 100 is attached to a stator housing (not shown). Moreover, the fastening hole 23 is provided in the ear | edge part 25 which protrudes on the outer peripheral side.

  As shown in FIG. 5, the inner core 30 is formed by laminating substantially annular steel plates in the direction of the rotation axis (Z direction). In addition, the inner peripheral side core 30 has an inner peripheral side core fitting portion 31 that is fitted to the outer peripheral side core fitting portion 21 in the circumferential direction and the radial direction on the inner peripheral side of the outer peripheral side core 20. Thereby, the inner peripheral side core fitting part 31 is suppressed from moving in the circumferential direction and the radial direction with respect to the outer peripheral side core fitting part 21. In addition, the inner peripheral side core fitting portion 31 is provided on the outer peripheral side of the inner peripheral side core 30. In addition, a plurality (48 in this embodiment) of inner core fitting portions 31 are provided. Moreover, the inner peripheral side core 30 comprises the teeth part 32 around which the coil 40 is wound. The inner peripheral side core fitting portion 31 is provided at the radially outer end of the tooth portion 32.

  As shown in FIG. 6, the coil 40 includes one first coil portion 41, one second coil portion 42, and a plurality (six in this embodiment) of third coil portions 43. The first coil portion 41 is composed of a single layer overlapped coil disposed on the outer peripheral side of the slot 11. The second coil portion 42 is composed of a single layer overlapping coil disposed on the inner peripheral side of the slot 11. The third coil portion 43 is formed of a two-layer coil with one circumferential portion disposed on the outer peripheral side of the slot 11 and the other circumferential portion disposed on the inner peripheral side of the slot 11.

  Further, as shown in FIG. 2, the coil 40 is disposed in the slot 11. The coil 40 is formed by winding a conducting wire made of a round wire. The coil 40 is provided with an insulating member 44 so as to cover the coil 40 made of a round wire.

  As shown in FIG. 7, the insulating member 44 includes, for example, a core material 44 a made of a PEN (polyethylene naphthalate) film, and a surface member 44 b made of aramid fibers provided so as to cover both surfaces of the core material 44 a. . The insulating member 44 has a sheet shape. And it is wound around the coil 40 so that the coil 40 may be wrapped. As shown in FIG. 2, the sheet-like insulating member 44 is wound around the coil 40 so that the one end side 44 c and the other end side 44 d of the insulating member 44 overlap each other. This can prevent the coil 40 from being exposed.

  Here, in this embodiment, as shown in FIG. 2, a thin plate-like protection member 45 is provided between the insulating member 44 and the surface 20 a facing the coil 40 of the outer peripheral side core 20. The protective member 45 is configured to prevent the outer core 20 and the insulating member 44 from interfering with each other when the inner core fitting portion 31 is fitted to the outer core fitting portion 21. . Further, the outer peripheral surface of the protection member 45 is in contact with the surface 20 a facing the coil 40 of the outer core 20, and the inner peripheral surface of the protection member 45 is in contact with the insulating member 44.

  Moreover, in this embodiment, the protection member 45 consists of a member (for example, aramid fiber) which has insulation. And the friction coefficient of the protective member 45 (for example, aramid fiber) which has insulation is smaller than the friction coefficient of the core material 44a (for example, PEN film) of the insulating member 44.

  Further, in the present embodiment, as shown in FIG. 1, when viewed from the radial direction, the protection member 45 is configured such that one end face 10 a (one of the stator cores 10) in the rotational axis direction of the outer peripheral side core 20 and the inner peripheral side core 30. Side end face 10a) and the other end face 10b (the other end face 10b of the stator core 10). Specifically, the protective member 45 protrudes from the end surface 10a on one side of the outer peripheral side core 20 and the inner peripheral side core 30 in the rotational axis direction by a length L1 toward the outer side in the rotational axis direction. 20 and the inner peripheral side core 30 protrude from the other end face 10b in the rotational axis direction by a length L2 outward in the rotational axis direction.

  Further, as shown in FIG. 1, the protection member 45 is disposed so as to extend from one end side in the circumferential direction of the slot 11 to the other end side when viewed from the rotation axis direction. Further, the protection member 45 has a strip shape (rectangular shape) (see FIG. 15) when viewed from the radial direction. That is, substantially the entire region on the side facing the outer peripheral side core 20 (the outer peripheral side of the coil 40) of the portion of the coil 40 disposed in the slot 11 is covered with the protective member 45.

  In addition, as shown in FIG. 2, a plurality of slots 11 (48 in this embodiment) are provided. In the present embodiment, the protection member 45 is provided between the insulating member 44 and the surface 20 a facing the coil 40 of the outer peripheral side core 20 in each of the plurality of slots 11.

  As shown in FIG. 1, the stator 100 includes both end portions on one side (Z1 direction side) and the other side (Z2 direction side) of the outer peripheral side core 20 and the inner peripheral side core 30 in the rotation axis direction. End face plates 50 (end face plates 50a and 50b) are provided so as to sandwich the outer peripheral core 20 and the inner peripheral core 30 at the end faces 10a and 10b. End face plates 50a and 50b have the same shape. Further, the end face plate 50 is formed of the same material as the steel plate forming the stator core 10. The Z1 direction and the Z2 direction are examples of the “second direction” and the “first direction” in the claims, respectively.

  As shown in FIG. 8, the end face plate 50 is formed in a substantially annular shape by a steel plate having the same material and thickness as the steel plates constituting the outer peripheral side core 20 and the inner peripheral side core 30. The end face plate 50 includes groove portions 52 and tooth portions 53 having shapes corresponding to the groove portions 21a and the tooth portions 21b of the outer peripheral side core fitting portion 21 of the outer peripheral side core 20, respectively. Moreover, the groove part 52 and the tooth | gear part 53 are respectively provided with multiple (48 in this embodiment). The tooth portion 53 is provided between two adjacent groove portions 52.

  Further, as shown in FIG. 8, the end face plate 50 has a plurality (three in this embodiment) of end face plate holes 51. As shown in FIG. 9, the end face plate hole 51 is arranged at a position corresponding to the fastening hole 23 of the stator core 10 into which a fixing tool (not shown) is inserted, and the end plate hole 51 is viewed from the rotation axis direction. The face plate 50 (tooth portion 53) is disposed at the end of the outer circumferential side core 20 and the inner circumferential side core 30 in the rotation axis direction so as to straddle the outer circumferential side core fitting portion 21 and the inner circumferential side core fitting portion 31. Has been. Moreover, the end surface plate hole 51 is provided in the ear | edge part 55 which protrudes on the outer peripheral side.

  Further, as shown in FIG. 10, the end face plate 50 has an outer periphery in a state where the end face plate hole portion 51 of the end face plate 50 is shifted in the circumferential direction (R2 direction) with respect to the fastening hole 23 as viewed from the rotation axis direction. It is comprised so that it may not straddle the outer peripheral side core fitting part 21 and the inner peripheral side core fitting part 31 so that the inner peripheral side core 30 can be fitted with respect to the side core 20 in the rotating shaft direction. .

  Further, as shown in FIGS. 9 and 10, the protection member 45 is disposed on the inner peripheral side with respect to the inner peripheral side edge portion 50 c of the end face plate 50 as viewed from the rotation axis direction. In other words, the protection member 45 is exposed when the end face plate 50 is disposed on the stator core 10 when viewed from the direction of the rotation axis.

  Further, the shape (see FIG. 8) of the outer peripheral side (outer surface 54) of the end face plate 50 is substantially equal to the shape (see FIG. 4) of the outer peripheral side (outer surface 24) of the outer peripheral side core 20.

(Effect of structure of this embodiment)
In the present embodiment, the following effects can be obtained.

  In the present embodiment, as described above, the insulating member 44 is provided between the outer surface-side core 20 and the surface 20a facing the coil 40. A thin plate-like protection member 45 is provided to prevent the outer core 20 and the insulating member 44 from interfering with each other. Thereby, when the outer peripheral side core fitting part 21 is fitted to the inner peripheral side core fitting part 31, the outer peripheral side core 20 and the insulating member 44 provided so as to cover the coil 40 collide with each other. This is prevented by the protective member 45. As a result, it is possible to prevent the coil 40 and the insulating member 44 provided so as to cover the coil 40 from being damaged when the inner peripheral core 30 is fitted to the outer peripheral core 20.

  In the present embodiment, as described above, the protection member 45 is made of an insulating member. Thus, unlike the case where the protective member 45 is made of a conductive member, it is necessary to remove the protective member 45 made of an insulating member even after the inner peripheral core 30 is fitted to the outer peripheral core 20. There is no.

  In the present embodiment, as described above, the insulating member 44 provided so as to cover the coil 40 includes the core material 44 a, and the friction coefficient of the protective member 45 having an insulating property is the core material 44 a of the insulating member 44. Is less than the friction coefficient. Thereby, the surface 20a facing the coil 40 of the outer peripheral core 20 can be easily slid with respect to the surface of the protection member 45.

  In the present embodiment, as described above, the protective member 45 is changed from the one end surface 10a in the rotation axis direction of the outer peripheral side core 20 and the inner peripheral side core 30 to the other end surface 10b when viewed from the radial direction. Arrange to extend across. As a result, substantially the entire region of the surface of the coil 40 (insulating member 44) facing the outer peripheral side core 20 is covered with the protective member 45, so that the outer peripheral side core 20 and the insulating member 44 (coil 40) interfere with each other. Can be surely prevented.

  In the present embodiment, as described above, the protection member 45 is provided between the insulating member 44 and the surface 20 a facing the coil 40 of the outer core 20 in each of the plurality of slots 11. Thereby, since the surface of the side facing all the outer peripheral side cores 20 of the plurality of coils 40 (insulating members 44) is covered with the protective member 45, the outer peripheral side core 20 and the plurality of coils 40 (insulating members 44) are formed. Interference can be reliably prevented.

(Manufacturing method of stator)
A method for manufacturing the stator 100 according to the first embodiment will be described with reference to FIGS.

  First, as shown in FIGS. 11 and 12, the coil 40 is attached to the inner peripheral core 30. The inner peripheral side core 30 includes an inner peripheral side core fitting portion 31 that is fitted to the outer peripheral side core fitting portion 21 of the outer peripheral side core 20 that is disposed on the outer peripheral side of the slot 11, and a tooth portion 32. Configure.

  Next, a substantially cylindrical mandrel 210 is disposed on the inner peripheral side of the inner peripheral core 30.

  Next, as shown in FIG. 13, the inner peripheral core 30 with the mandrel 210 attached is placed on the stand 220. Note that a rod-like member 221 provided to extend in the Z direction is attached to the stand 220. The same number of rod-shaped members 221 as the slots 11 (48 in this embodiment) are provided. The rod-shaped member 221 is disposed between the adjacent teeth portions 32 of the inner peripheral side core 30, whereby the inner peripheral side core 30 is fixed to the stand 220.

  Next, in the present embodiment, as shown in FIG. 13, the jig 230 is moved along the Z2 direction in which the outer peripheral core 20 is inserted with respect to the inner peripheral core 30 with the coil 40 attached. Let Thereby, the shape of the inner peripheral core 30 (and the shape of the coil 40) is corrected. Specifically, as shown in FIG. 14, the jig 230 is formed in an annular shape when viewed from the direction of the rotation axis. Further, a jig fitting portion 231 that fits into the inner circumference core fitting portion 31 of the inner circumference side core 30 is provided on the inner circumference side of the jig 230. The jig fitting portion 231 includes a plurality of groove portions 231a fitted to the inner peripheral core fitting portion 31, and tooth portions 231b provided between the adjacent groove portions 231a. As shown in FIG. 13, a guide surface 232 (inclined surface) is formed on the lower side (Z2 direction side) of the tooth portion 231b so as to extend radially outward toward the Z2 direction side. And the jig | tool 230 is moved along the Z2 direction where the outer peripheral side core 20 is inserted so that the jig fitting part 231 (groove part 231a) may slide with respect to the inner peripheral side core fitting part 31. . Thereby, even when the inner peripheral core 30 is deformed, the inner peripheral core 30 is corrected to a desired shape (the shape shown in FIG. 5). The jig 230 is an example of the “third jig” in the claims.

  Next, in this embodiment, as shown in FIGS. 15 and 16, the protection member 45 is attached to the jig 240. Thereby, the protection member 45 is formed to have a shape that curves from the outer peripheral side toward the inner peripheral side toward the Z1 direction side opposite to the Z2 direction in which the outer peripheral side core 20 is inserted. Specifically, as shown in FIG. 16, the jig 240 includes a jig 241 having an inclined surface 241 a that tapers toward the Z1 direction opposite to the Z2 direction in which the outer peripheral core 20 is inserted. Further, the jig 240 includes a jig 242 attached to the Z1 direction side of the jig 241. And the edge part of the Z1 direction side of the protection member 45 is arrange | positioned in the inclined surface 241a of the jig | tool 241, Therefore The protection member 45 curves from the outer peripheral side to the inner peripheral side toward the Z1 direction side. It is deformed to have Further, by attaching the jig 242 to the Z1 direction side of the jig 241 in a state where the protective member 45 is disposed on the inclined surface 241a of the jig 241, the protective member 45 is attached to the jig 241 and the jig 242. It is pinched and fixed. The jig 240 is an example of the “first jig” in the claims.

  And it is for preventing the outer peripheral side core 20 and the insulating member 44 provided so as to cover the coil 40 from interfering with the side facing the outer peripheral side core 20 of the coil 40 attached to the inner peripheral side core 30. Then, a thin plate-like protective member 45 attached to the jig 240 is disposed. In addition, the protection member 45 consists of a member (for example, aramid fiber) which has insulation as mentioned above.

  Further, as described above, a plurality of slots 11 (48 in the present embodiment) are provided. In each of the plurality of slots 11, the protection member 45 is at least from one end surface 10 a to the other end surface 10 b in the rotational axis direction of the outer peripheral side core 20 and the inner peripheral side core 30 when viewed from the radial direction. It is arranged to extend across. Specifically, when viewed from the radial direction, the protection member 45 is formed longer than the length from one end surface 10a to the other end surface 10b in the rotation axis direction of the outer peripheral side core 20 and the inner peripheral side core 30. ing. As a result, the protective member 45 extends from the upper side (Z1 direction side, jig 230 side) of one end surface 10a of the outer peripheral side core 20 and the inner peripheral side core 30 to the outer peripheral side core 20 and the inner peripheral side core 30. It arrange | positions over the downward side (Z2 direction side) of the end surface 10b of the other side.

  Next, in this embodiment, as shown in FIG. 17, the jig 250 having the guide surface 252 is disposed on the Z2 direction side of the outer peripheral side core 20. As shown in FIG. 14, the jig 250 has substantially the same shape as the jig 230. That is, the jig 250 is formed in an annular shape when viewed from the rotation axis direction. Further, a jig fitting portion 251 that fits into the inner circumference side core fitting portion 31 of the inner circumference side core 30 is provided on the inner circumference side of the jig 250. The jig fitting portion 251 has a plurality of groove portions 251a fitted to the inner peripheral core fitting portion 31, and tooth portions 251b provided between adjacent groove portions 251a. As shown in FIG. 17, a guide surface 252 (inclined surface) is formed on the lower side (Z2 direction side) of the tooth portion 251b so as to extend radially outward toward the Z2 side. The jig 250 is an example of the “second jig” in the claims.

  End face plates 50 are arranged in advance on one end face and the other end face in the rotation axis direction of the outer core 20. As shown in FIG. 10, the end face plate 50 is fitted to the outer peripheral side core fitting portion 21 and the inner peripheral side core so that the inner peripheral side core 30 can be fitted to the outer peripheral side core 20 in the rotation axis direction. It arrange | positions so that the part 31 may not be straddled. Thereby, the inner peripheral side core 30 can be fitted to the peripheral side core 20 in the rotation axis direction via the end face plate 50.

  Next, in the present embodiment, as shown in FIG. 17, the outer peripheral side core 20 is rotated around the surface of the protection member 45 so that the surface 20 a facing the coil 40 of the outer peripheral side core 20 is slid. By inserting along the direction, the inner peripheral side core fitting portion 31 of the inner peripheral side core 30 is fitted to the outer peripheral side core fitting portion 21 of the outer peripheral side core 20 on the inner peripheral side of the outer peripheral side core 20. Let Specifically, the outer peripheral side core 20 is inserted along the Z2 direction so that the guide surface 252 of the jig 250 slides with respect to the protective member 45 having a shape that curves from the outer peripheral side to the inner peripheral side. Thus, the inner peripheral side core fitting portion 31 of the inner peripheral side core 30 is fitted to the outer peripheral side core fitting portion 21 of the outer peripheral side core 20 on the inner peripheral side of the outer peripheral side core 20.

  Next, portions of the protective member 45 protruding from one end face 10a and the other end face 10b of the outer peripheral core 20 and the inner peripheral core 30 (stator core 10) are cut.

  Finally, as shown in FIG. 9, the end face plate 50 (tooth portion 53) is moved between the outer peripheral side core fitting part 21 and the inner peripheral side core as viewed from the rotational axis direction by moving the end face plate 50 in the circumferential direction. It arrange | positions so that the fitting part 31 may be straddled.

(Effect of the manufacturing method of this embodiment)
In the present embodiment, the following effects can be obtained.

  In the present embodiment, as described above, the insulating member 44 provided so as to cover the outer peripheral side core 20 and the coil 40 on the side facing the outer peripheral side core 20 of the coil 40 attached to the inner peripheral side core 30. The step of disposing a thin plate-like protective member 45 for preventing interference, and the outer peripheral side so that the surface 20a facing the coil 40 of the outer peripheral side core 20 slides relative to the surface of the protective member 45 By inserting the core 20 along the rotation axis direction, the inner peripheral side core fitting of the inner peripheral side core 30 is fitted into the outer peripheral side core fitting portion 21 of the outer peripheral side core 20 on the inner peripheral side of the outer peripheral side core 20. A step of fitting the portion 31. Thereby, when the outer peripheral side core fitting part 21 is fitted to the inner peripheral side core fitting part 31, the outer peripheral side core 20 and the insulating member 44 provided so as to cover the coil 40 collide with each other. This is prevented by the protective member 45. As a result, it is possible to prevent the coil 40 and the insulating member 44 provided so as to cover the coil 40 from being damaged when the inner peripheral core 30 is fitted to the outer peripheral core 20.

  Further, in the present embodiment, as described above, the step of arranging the protection member 45 includes rotating shafts of the outer peripheral side core 20 and the inner peripheral side core 30 in each of the plurality of slots 11 at least in the radial direction. A step of disposing the protective member 45 so as to extend from the end face 10a on one side of the direction to the end face 10b on the other side. As a result, substantially the entire region of the surface of the coil 40 (insulating member 44) facing the outer peripheral side core 20 is covered with the protective member 45, so that the outer peripheral side core 20 and the insulating member 44 (coil 40) interfere with each other. Can be surely prevented.

  In the present embodiment, as described above, the step of arranging the protective member 45 includes the step of arranging the protective member 45 made of an insulating member with the outer peripheral side core 20 of the coil 40 attached to the inner peripheral side core 30. A step of disposing on the opposite side. Thus, unlike the case where the protective member 45 is made of a conductive member, it is necessary to remove the protective member 45 made of an insulating member even after the inner peripheral core 30 is fitted to the outer peripheral core 20. There is no. As a result, unlike the case where the protective member 45 is removed, it is possible to prevent the number of manufacturing steps of the stator 100 from increasing.

  Further, in the present embodiment, as described above, the step of arranging the protection member 45 is performed from the outer peripheral side toward the Z1 direction opposite to the Z2 direction in which the outer peripheral core 20 is inserted. The step of attaching the protective member 45 to the jig 240 so as to have a shape curved toward the inner peripheral side, and the outer periphery of the coil 40 attached to the inner peripheral side core 30 by attaching the protective member 45 attached to the jig 240 And a step of disposing on the side facing the side core 20. Thereby, since the protective member 45 has a shape that curves from the outer peripheral side to the inner peripheral side, the surface 20a facing the coil 40 of the outer peripheral side core 20 can be smoothly slid relative to the surface of the protective member 45. it can.

  Further, in the present embodiment, as described above, the step of fitting the inner peripheral side core fitting portion 31 to the outer peripheral side core fitting portion 21 is performed by attaching the jig 250 having the guide surface 252 to the outer peripheral side core 20. The outer peripheral core 20 is moved in the Z2 direction so that the guide surface 252 of the jig 250 is slid with respect to the protective member 45 having a shape arranged on the Z2 direction side and a curved shape from the outer peripheral side to the inner peripheral side. The step of fitting the inner peripheral side core fitting portion 31 of the inner peripheral side core 30 to the outer peripheral side core fitting portion 21 of the outer peripheral side core 20 on the inner peripheral side of the outer peripheral side core 20 by inserting along the inner peripheral side. Including. Thereby, in addition to the shape which curves from the outer peripheral side of the protective member 45 to the inner peripheral side, since the guide surface 252 is provided also in the jig | tool 250, the outer peripheral side core 20 with respect to the surface of the protective member 45 is provided. The surface 20a facing the coil 40 can be slid more smoothly.

  Further, in the present embodiment, as described above, a jig fitting that fits into the inner peripheral core fitting portion 31 of the inner peripheral core 30 with respect to the inner peripheral core 30 with the coil 40 attached thereto. The jig 230 having the joint portion 231 is moved along the Z2 direction in which the outer peripheral side core 20 is inserted so that the jig fitting portion 231 slides with respect to the inner peripheral side core fitting portion 31. Thus, a step of correcting the shape of the inner peripheral core 30 is provided. Thereby, the shape of the inner peripheral side core 30 with relatively low rigidity (and the shape of the coil 40 made of a round wire whose shape is difficult to be constant) can be corrected by the jig 230.

[Modification]
The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiment but by the scope of claims for patent, and further includes all modifications (modifications) within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the above-described embodiment, an example in which the protective member is made of a member having an insulating property has been shown, but the present invention is not limited to this. For example, like the stator 110 according to the first modification shown in FIG. 18, the protection member 145 may be made of a metal member such as a polished steel plate. In this case, the protective member made of a metal member is removed from the stator 110 after the inner peripheral side core fitting portion 31 is fitted to the outer peripheral side core fitting portion 21.

  Moreover, in the said embodiment, although the protection member showed the example which consists of an aramid fiber which has insulation, this invention is not limited to this. In this invention, you may comprise a protection member from the member which has insulation other than an aramid fiber.

  In the above embodiment, the protection member is disposed so as to extend from one end face in the rotation axis direction of the outer peripheral side core and the inner peripheral side core to the other end face. The invention is not limited to this. For example, you may provide a protection member only in the side by which the outer peripheral side core of an inner peripheral side core is inserted.

  Moreover, in the said embodiment, as shown in FIG. 8, although the groove part 52 and the tooth | gear part 53 were provided in the end surface board 50, this invention is not limited to this. For example, like the end plate 60 of the stator 120 according to the second modification shown in FIG. 19, the edge 61 on the inner peripheral side of the end plate 60 may be formed in a substantially circular shape. And the edge part of the inner peripheral side of the end surface board 60 is straddled across the some outer periphery side core fitting part 21 and the some inner periphery side core fitting part 31 along the circumferential direction. 61 is arrange | positioned rather than the edge 31a of the outer peripheral side of the inner peripheral side core fitting part 31 at the inner peripheral side. Moreover, in the 2nd modification, the shape of the end surface board 60 provided in the one side and other side of a rotating shaft direction is the same.

  Moreover, although the shape of the end surface plate 50 (end surface plate 60) provided in the one side and the other side of a rotating shaft direction was shown in the said embodiment and the 2nd modification, this invention shows this. Not limited. For example, like the stator 130 according to the third modification shown in FIG. 20, the end face plate 50 of the above-described embodiment is disposed on one side in the rotational axis direction (the lead wire side on which the lead wire is disposed), and the rotational axis direction The end face plate 60 of the second modified example may be disposed on the other side (the opposite lead wire side opposite to the side on which the lead wire is disposed).

  Moreover, in the said embodiment, although the strip-shaped (rectangular shape) protection member was shown attached to a jig | tool, this invention is not limited to this. For example, a comb-like protective member may be attached to the jig. Thereby, unlike the case where a plurality of strip-shaped protection members are individually attached to the jig, the attaching operation of the protection member to the jig can be simplified.

  Moreover, in the said embodiment, as shown in FIG. 13, the jig | tool 230 is moved along the Z2 direction where the outer peripheral side core 20 is inserted with respect to the inner peripheral side core 30 in the state where the coil 40 was attached. The example of correcting the shape of the inner peripheral core 30 (and the shape of the coil 40) has been shown, but the present invention is not limited to this. For example, the jig 250 having the guide surface 252 disposed on the Z2 direction side of the outer peripheral side core 20 shown in FIG. 17 is moved along the Z2 direction to form the shape of the inner peripheral side core 30 (and the shape of the coil 40). ) May be corrected. That is, the jig 230 and the jig 250 may be shared.

10a (one side) end face 10b (other side) end face 11 slot 20 outer peripheral side core 20a (facing the coil of the outer peripheral side core) 21 outer peripheral side core fitting part 22 yoke part 30 inner peripheral side core 31 inner circumference Side core fitting portion 32 Teeth portion 40 Coil 44 Insulating member 44a Core material 45, 145 Protective member 100, 110, 120, 130 Stator 230 Jig (third jig)
231 Jig fitting part 240 Jig (first jig)
250 jig (second jig)
252 Guide surface

Claims (11)

An outer peripheral core disposed on the outer peripheral side of the slot and having an outer peripheral core fitting portion and constituting a yoke portion;
On the inner peripheral side of the outer peripheral side core, an inner peripheral side core that has an inner peripheral side core fitting part fitted to the outer peripheral side core fitting part and constitutes a teeth part,
A coil disposed in the slot;
An insulating member provided so as to cover the coil;
The outer core is provided between the insulating member and a surface of the outer core facing the coil, and when the inner core fitting portion is fitted to the outer core fitting portion. And a thin plate-like protective member for preventing interference between the insulating member and the stator.   The stator according to claim 1, wherein the protective member is made of an insulating member. The insulating member provided to cover the coil includes a core material,
The stator according to claim 2, wherein a friction coefficient of the insulating protective member is smaller than a friction coefficient of the core member of the insulating member.   The said protection member is arrange | positioned so that it may extend over the end surface of the other side from the one end surface of the rotating shaft direction of the said outer peripheral side core and the said inner peripheral side core seeing from radial direction. The stator according to any one of 3. A plurality of the slots are provided,
5. The protective member according to claim 1, wherein the protective member is provided between the insulating member and a surface of the outer peripheral core facing the coil in each of the plurality of slots. Stator. A step of attaching a coil to the inner peripheral side core constituting the teeth portion, and having an inner peripheral side core fitting portion to be fitted to the outer peripheral side core fitting portion of the outer peripheral side core disposed on the outer peripheral side of the slot; ,
A thin plate-like shape for preventing interference between the outer peripheral side core and the insulating member provided to cover the coil on the side of the coil attached to the inner peripheral side core that faces the outer peripheral side core. Arranging the protective member;
By inserting the outer peripheral core along the rotational axis direction so that the surface of the outer peripheral core facing the coil slides with respect to the surface of the protective member, the inner periphery of the outer peripheral core And a step of fitting the inner peripheral side core fitting part of the inner peripheral side core to the outer peripheral side core fitting part of the outer peripheral side core. A plurality of the slots are provided,
The step of disposing the protective member includes, in each of the plurality of slots, at least from one end surface to the other end surface in the rotational axis direction of the outer peripheral core and the inner peripheral core as viewed from the radial direction. The method for manufacturing a stator according to claim 6, comprising a step of arranging the protection member so as to extend across.   The step of disposing the protective member includes a step of disposing the protective member made of an insulating member on a side facing the outer peripheral core of the coil attached to the inner peripheral core. The stator manufacturing method according to 6 or 7. The step of arranging the protective member includes:
The first protective member is formed so that the protective member has a shape that curves from the outer peripheral side to the inner peripheral side toward the second direction opposite to the first direction in which the outer peripheral core is inserted. Attaching to the jig,
The step of disposing the protective member attached to the first jig on the side facing the outer peripheral side core of the coil attached to the inner peripheral side core. A method for manufacturing a stator according to item 1. The step of fitting the inner peripheral side core fitting part to the outer peripheral side core fitting part,
Disposing a second jig having a guide surface on the first direction side of the outer peripheral core;
The outer peripheral core is inserted along the first direction so that the guide surface of the second jig slides with respect to the protective member having a shape curved from the outer peripheral side to the inner peripheral side. A step of fitting the inner peripheral side core fitting portion of the inner peripheral side core to the outer peripheral side core fitting portion of the outer peripheral side core on the inner peripheral side of the outer peripheral side core. Item 10. A method for manufacturing a stator according to Item 9.   A third jig having a jig fitting portion that fits into the inner circumferential core fitting portion of the inner circumferential core with respect to the inner circumferential core with the coil attached thereto, The shape of the inner periphery side core is corrected by moving along the first direction in which the outer periphery side core is inserted so that the jig engagement portion slides with respect to the periphery side core engagement portion. The method for manufacturing a stator according to any one of claims 6 to 10, further comprising a step of:

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