JP4490248B2 - Insulator assembling method and stator manufacturing method - Google Patents

Description

The present invention relates to a method for assembling an insulator for insulation from a winding wound around a tooth portion , and a method for manufacturing a stator including the method for assembling the insulator .

2. Description of the Related Art Conventionally, a stator in a brushless motor or the like has windings wound around teeth portions provided radially of a core (stator core) via an insulator member. As such a stator, there is a stator in which a tooth portion of a core is configured to be separated from a tooth portion adjacent in the circumferential direction, and a plurality of insulator members corresponding to the respective tooth portions are connected to each other so as to be rotatable. (For example, refer to Patent Document 1). Each insulator member includes an axial end surface covering portion for covering one end surface in the axial direction of the tooth portion, and a pair for covering the inner surface of the slot in the tooth portion extending in the axial direction from the axial one end surface covering portion. Slot inner side surface covering portion. In such a configuration, an insulator member is attached to the tooth portion, and the winding is wound in a state where the tooth portion (insulator member) is rotated from each other and separated from the adjacent tooth portions in the circumferential direction. The teeth portions adjacent in the circumferential direction do not get in the way, and the winding can be easily wound with a high space factor.
JP 2003-164089 A

  By the way, the insulator members as described above are connected to each other so as to be rotatable, and are attached to a plurality of teeth portions of the core at the same time, but the attachment is difficult. Specifically, when inserting each tooth portion between a pair of slot inner side surface covering portions of each insulator member from the axial direction, unless the positioning of each insulator member and each tooth portion is made highly accurate, the slot inner surface covering There is a possibility that the teeth portion may collide with the tip of the portion, and positioning thereof is difficult. In addition, it is conceivable to reduce the collision by chamfering the tip of the slot inner surface covering portion (forming a guide surface). However, since the slot inner surface covering portion is thin, the collision reducing effect is considered. Is small and cannot be resolved.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an insulator assembly method and a stator manufacturing method in which an insulator member can be easily attached.

The invention according to claim 1 constitutes the core slots are formed between the teeth adjacent a plurality of teeth which are placed in the annular portion and the radially Ru extending radially from the annular portion, A plurality of divided core members each having a divided annular portion obtained by dividing the annular portion in the circumferential direction and a tooth portion extending in a radial direction from the divided annular portion, each of which is allowed to rotate at an end portion of the divided annular portion. to the annular portion one end face covering portion for covering the axial end face of the split ring part, and the teeth portion end surface covering portion for covering the axial end surface of the teeth, the annular portion one end face covering portion an annular portion side surface covering portion for covering the slot side of the dividing annular portion extending axially from the pair for extending from the tooth portion one end surface covering portion axially covers the slot side surface of the teeth in the teeth And a surface covering portion, a insulator assembly method of mounting a plurality of insulators members which are pivotally connected to each other, the slot around the pair of the teeth inner surface covering portion at deformation jig A deformation step of elastically deforming the annular portion inner surface covering portion toward the center of the slot with a deformation jig, and a pair of teeth portion inner surface coverings that are elastically deformed after the deformation step An insertion step of inserting the teeth portion of the split core member between the portions.

According to a second aspect of the present invention, in the insulator assembly method according to the first aspect, the divided core member has a circumferentially extending portion extending in the circumferential direction from the tip of the teeth portion on the side opposite to the annular portion. The insulator member includes an extending portion one end surface covering portion for covering one axial end surface of the circumferential extending portion, and an extending portion extending from the one end surface covering portion in the axial direction. An extension portion inner side surface covering portion for covering the slot inner side surface of the portion, and in the deformation step, the annular portion inner surface covering portion and the extension portion inner surface covering portion are connected to the teeth by a deformation jig. The annular portion inner surface covering portion and the extending portion inner surface covering portion are elastically deformed toward the center of the slot by sandwiching from the direction corresponding to the extending direction of the portion.
According to a third aspect of the invention, the insulator assembly method according to claim 2, in the previous SL deformation step, proximally insertion portion includes an insertion portion extending along the direction of extension of said teeth by inserting from the direction perpendicular to the axis of the insertion portion of the deformed jig widened portion whose width is larger is formed as directed to between a pair of said teeth inner surface covering portion, a pair of the said teeth It is elastically deformed so that the interval between the side surface covering portions is widened.

According to a fourth aspect of the present invention, in the method for assembling the insulator according to the third aspect , the insertion portions of the deformation jig are arranged at predetermined intervals and their base ends are straight. be comprised are connected by a jig connecting portion, wherein a modification step, by simultaneously inserted from the direction perpendicular to the axis between each of said insertion portions of each pair the teeth inner surface covering portion, each pair Are simultaneously elastically deformed so that the distance between the inner side surface covering portions of the teeth portion increases.

According to a fifth aspect of the present invention, in the insulator assembly method according to the fourth aspect , the deformation jig includes a receiving jig arranged to face the jig coupling portion. , the elastic deformation of the slot center side of the annular portion side surface covering portion and the extended portion in the side surface covering portion in the deforming step, the annular portion inner surface covering portion and the at the receiving jig and the jig connecting portion It carried out by pinching the extension portion in the side surface covering portion from a direction corresponding to the direction of extension of the teeth.

The invention according to claim 6 is the method for assembling the insulator according to any one of claims 1 to 5, and after the assembling method, the teeth portions are separated from the teeth portions adjacent in the circumferential direction. A winding step of winding the winding in a state of being made, and a step of rotating the split core members relative to each other so that the split annular portion forms the annular portion after the winding step .

(Function)
According to the invention described in the claims, the deforming step, the insulator member in deforming jig with a pair of teeth inside surface coated portions of the insulator member is elastically deformed in the slot center side at the deformation jig The annular portion inner side surface covering portion is elastically deformed toward the slot center side . Then, in the inserting step, the tooth portion of the divided core member is inserted between the pair of teeth inside surface coated portions of an elastically deformed state. Thus, even without the positioning of the insulator member and the divided core members (teeth), each high-precision, split core member including a tooth portion at the tip of the tooth portion inner side surface covering portion (and the annular portion side surface covering portion) Are prevented from colliding.

According to the invention described in claim 3, in deformation process, deformation jig (width increases toward the base end side in the insertion portion includes an insertion portion extending along the direction of extension of the teeth is greatly widened When the insertion portion of the deformation jig in which the portion is formed is inserted between the pair of teeth portion inner surface covering portions from the direction orthogonal to the axis, the gap between the pair of tooth portion inner surface covering portions is elastic. Since it is deformed, it is possible to easily perform the deformation process (without driving the jig in many directions) while using a simple jig.

According to invention of Claim 4 , an insertion part is arrange | positioned for every predetermined space | interval, and those base end parts are connected by the linear jig | tool connection part. Since each insertion portion that is inserted simultaneously in the axial orthogonal direction between each pair of teeth inside surface covering portion, the distance between each pair of teeth inside surface covering portion are simultaneously elastically deformed so as to expand, easy The deformation process can be easily performed while using a simple jig, and the speed of the deformation process can be increased.

According to the fifth aspect of the present invention, the deformation jig includes a receiving jig disposed to face the jig connecting portion. The elastic deformation of the annular portion inner surface covering portion and the extending portion inner surface covering portion toward the center of the slot in the deforming step is performed by the jig connecting portion and the receiving jig, and the annular portion inner surface covering portion and the extending portion inner surface covering portion. Is performed by being pinched from a direction corresponding to the extending direction of the teeth portion. Therefore, the slot inner surface covering portion (annular portion inner surface covering portion, teeth portion inner surface covering portion, extension portion inner surface covering portion) , that is, the insulator member is stably held in the direction corresponding to the extending direction of the tooth portion and inserted. It can be performed.

ADVANTAGE OF THE INVENTION According to this invention, the assembly method of the insulator which can mount | wear an insulator member easily, and the manufacturing method of a stator can be provided.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, a brushless motor as a rotating electrical machine includes a stator 1 and a rotor 2 (not shown) that is disposed to face the stator 1 and is accommodated inside the stator 1 (in the drawing, an alternate long and short dash line). Indicated). The stator 1 is provided in a substantially cylindrical housing 3 and includes a stator core 6 around which a winding 5 is wound via an insulator 4.

  The stator core 6 includes a plurality of teeth 7 that are radially arranged and wound with the winding 5, and an annular portion 8 that is fixed to the inner periphery of the housing 3 by connecting the radially outer ends of the teeth 7. With. In the present embodiment, twelve teeth portions 7 are formed at equiangular (30 degree) intervals.

  Specifically, as shown in FIG. 2, the stator core 6 has a plurality of divided cores (12 pieces, only four pieces are shown in FIG. 2) each having a tooth portion 7 and allowing mutual rotation. The member 11 is constituted. The divided core member 11 includes a divided annular portion 12 having a shape obtained by dividing the annular portion 8 in the circumferential direction (for each tooth portion 7), and a radially inner side in an annular state from an intermediate portion of the divided annular portion 12. And a circumferentially extending portion 13 extending in a substantially parallel direction (circumferential direction in an annular state) from the tip of the tooth portion 7. And the split core member 11 is contact | abutted by the edge part of a mutual division | segmentation annular part 12, and rotation is accept | permitted centering on the edge part. In the present embodiment, the end portions of the divided annular portions 12 are formed with arc-shaped convex portions and arc-shaped concave portions alternately (in each core sheet) in the axial direction when viewed from the axial direction. It arrange | positions so that it may fit with those of the edge part of the division | segmentation cyclic | annular part 12 to fit (projection parts are laminated | stacked), and mutual rotation is guided by those circular arc shape.

  As shown in FIGS. 3 to 6, the insulator 4 includes first and second insulator members 21 and 22 having a shape corresponding to the split core member 11. The first and second insulator members 21 and 22 are made of an insulating resin material.

  The first and second insulator members 21, 22 are for covering one end surface of the annular portion 12 in the axial direction and covering one end surface of the annular portion 12, and one end surface in the axial direction of the tooth portion 7. Teeth portion one end surface covering portions 21b, 22b and extension portion one end surface covering portions 21c, 22c (see FIG. 4) for covering one end surface in the axial direction of the circumferentially extending portion 13 are provided. In the present embodiment, the annular portion one end surface covering portions 21a and 22a, the teeth portion one end surface covering portions 21b and 22b, and the extending portion one end surface covering portions 21c and 22c are in the axial direction of the split core member 11. An axial one end face covering portion for covering the one end face is configured.

  The first and second insulator members 21 and 22 extend in the axial direction from the annular portion one end surface covering portions 21a and 22a and cover the inner surface of the slot in the divided annular portion 12 so as to cover the inner surface of the annular portion 21d and 22d. Have Further, the first and second insulator members 21 and 22 have teeth portion inner surface covering portions 21e and 22e that extend in the axial direction from the tooth portion one end surface covering portions 21b and 22b and cover the inner surface of the slot in the tooth portion 7 respectively. Have. Further, the first and second insulator members 21 and 22 extend from the extending portion one end surface covering portions 21c and 22c in the axial direction to cover the inner surface of the extending portion 13 and cover the inner surface of the slot. It has parts 21f and 22f. In the present embodiment, the pair of annular portion inner surface covering portions 21d and 22d, the teeth portion inner surface covering portions 21e and 22e, and the extending portion inner surface covering portions 21f and 22f are the slot inner surfaces in the split core member 11, respectively. A pair of slot inner side surface covering portions for covering the cover are configured.

  Further, as shown in FIGS. 3 and 4, the first insulator member 21 is a portion corresponding to both ends (circumferential end portions) of the divided annular portion 12, both ends of the annular portion one end surface covering portion 21a. An insertion convex portion 21g extending in the axial direction is formed on the portion (both ends in the circumferential direction). The insertion protrusion 21g is formed with a hook-shaped protrusion 21h extending in the direction perpendicular to the axis at the tip thereof.

  Further, as shown in FIGS. 5 and 6, the second insulator member 22 is a portion corresponding to both end portions (circumferential end portions) of the divided annular portion 12 and both ends of the annular portion end face covering portion 22a. An insertion hole 22g extending in the axial direction is formed in the portion (both ends in the circumferential direction). The insertion hole 22g is formed with a bowl-shaped notch 22h extending in the direction perpendicular to the axis.

  In other words, the hook-shaped protrusion 21h and the hook-shaped notch 22h insert the insertion protrusion 21g so that the first insulator member 21 and the second insulator member 22 coincide only at a predetermined rotation angle (see FIG. 7). The insertion convex portion 21g can be inserted into and removed from the insertion hole 22g except for the predetermined rotation angle (see FIG. 1). Then, a total of twelve (six) first and second insulator members 21 and 22 are inserted into the insertion hole 22g at the predetermined angle as shown in FIG. Thus, they are connected so as to be rotatable. It should be noted that a total of twelve (six) first and second insulator members 21 and 22 (the end portions of the first and second insulator members 21 and 22 at both ends) are inserted into the two ends. Although the convex part 21g and the said insertion hole 22g are not formed, the same code | symbol is attached | subjected about parts other than the insertion convex part 21g and the insertion hole 22g.

  The first and second insulator members 21 and 22 (insulator 4) configured as described above are attached to the divided core member 11 to cover the divided core member 11 and are adjacent to each other. The two are connected so as to be rotatable. A winding 5 (see FIG. 1) is wound around each of the teeth portions 7 (slots therebetween) via the first or second insulator members 21 and 22.

Next, the manufacturing method of the stator 1 including the assembling method of the insulator 4 configured as described above and the assembling device of the insulator will be described.
As shown in FIG. 8, the insulator assembling apparatus includes a pair of slot inner side surface covering portions (annular portion inner side surface covering portions 21d and 22d, teeth portion inner side surface covering portions 21e and 22e, extension portion inner side surface covering portions 21f and 22f). Is provided with an insertion jig 31 and a receiving jig 32 for elastically deforming toward the slot center X (see FIGS. 1, 9, and 11) viewed from the axial direction. In the present embodiment, the insertion jig 31 and the receiving jig 32 constitute a deformation jig.

  The insertion jig 31 includes an insertion portion 31a extending along the direction in which the teeth portion 7 extends (downward in FIG. 9), and the insertion portion 31a has a widened portion 31b whose width increases toward the proximal end side. Is formed. In addition, a taper portion whose cross-sectional area decreases toward the tip is formed at the tip of the insertion portion 31a of the present embodiment. And as shown in FIG. 8, the insertion part 31a is arrange | positioned for every predetermined space | interval, and those base end parts are connected by the linear jig | tool connection part 31c.

  The receiving jig 32 is formed in a straight line like the jig connecting portion 31c, and is disposed facing the jig connecting portion 31c (in the protruding direction of the insertion portion 31a). The receiving jig 32 is formed with a fitting hole 32a into which the distal end side of the insertion portion 31a can be fitted. The insertion jig 31 and the receiving jig 32 are provided so as to be relatively movable in directions close to or away from each other, and are driven by a drive source (not shown) to be relatively moved.

  First, as shown in FIG. 8, between the insertion jig 31 and the receiving jig 32, the insulator 4, that is, the one in which the first and second insulator members 21 and 22 are alternately connected is arranged. . At this time, the rotation angles of the first and second insulator members 21 and 22 are set so that they are all aligned in a straight line.

  Next, in the deformation step, the pair of slot inner side surface covering portions (annular portion inner side surface covering portions 21d and 22d, teeth portion inner side surface covering portions 21e and 22e, and extending portion inner side surface covering portions 21f and 22f) are received with the insertion jig 31 and the receiving jig 31. The jig 32 is elastically deformed toward the slot center X (see FIGS. 1, 9, and 11) viewed from the axial direction.

  Specifically, the insertion jig 31 and the receiving jig 32 are relatively moved in a direction approaching each other, and as shown in FIG. 9, the insertion portion 31a is moved to a pair of slot inner side surface covering portions (in particular, the tooth portion inner side surface covering portion 21e , 22e) from the direction orthogonal to the axis (upward in FIG. 9). And when the insertion part 31a is inserted to the base end part, the force which expands a mutual space | interval acts on a pair of teeth part inner surface covering part 21e, 22e by the wide part 31b, and a pair of teeth part inner surface covering part 21e, It is elastically deformed so that the space | interval 22e spreads (refer FIG.10 and FIG.11). At this time, the annular portion inner side surface covering portions 21d and 22d and the extending portion inner side surface covering portions 21f and 22f of the slot inner side surface covering portion are extended in the direction in which the teeth portion 7 extends (see FIG. 9 and FIG. 11, it is clamped from the direction corresponding to the vertical direction). Further, in this embodiment, at this time, the jig inner portion 21d and 22d and the extension inner surface covering portions 21f and 22f of the slot inner surface covering portion are centered in the slot by the jig connecting portion 31c and the receiving jig 32. It is elastically deformed to the X side (see FIGS. 1, 9 and 11). Of course, in the present embodiment, each insertion portion 31a is simultaneously inserted between each pair of slot inner surface covering portions (particularly, the tooth portion inner surface covering portions 21e, 22e) so that each pair of slot inner surface coverings is covered. The portions (annular portion inner side surface covering portions 21d and 22d, teeth portion inner side surface covering portions 21e and 22e, and extending portion inner side surface covering portions 21f and 22f) are simultaneously elastically deformed. The axial position where the insertion portion 31a is inserted is other than the tip of the slot inner surface covering portion (annular portion inner surface covering portions 21d and 22d, teeth inner surface covering portions 21e and 22e, extended portion inner surface covering portions 21f and 22f). And in this Embodiment, it is set to the axial direction intermediate part of the slot inner surface covering part. Further, when the insertion portion 31a is inserted between the pair of slot inner side surface covering portions (particularly, the teeth portion inner surface covering portions 21e, 22e), the distal end side of the insertion portion 31a is inserted into the insertion hole 32a. Let

  Next, in the inserting step, the split core member 11 (especially the tooth portion 7) is inserted between the pair of slot inner side surface covering portions (particularly the tooth portion inner side surface covering portions 21e and 22e) in an elastically deformed state.

  Specifically, first, the stator core 6, that is, a plurality of divided cores, in the axial direction (direction in which the slot inner surface covering portion extends) of the insulator 4, that is, the first and second insulator members 21 and 22 are alternately connected. The member 11 is contacted (connected). Then, the first and second insulator members 21 and 22 are moved in the axial direction by the pushing member 33 (see FIG. 12) while being elastically deformed by the insertion jig 31 and the receiving jig 32 (see FIG. 11). By relative movement, one end side in the axial direction of the split core member 11 (especially the teeth portion 7) is inserted between the pair of slot inner side surface covering portions (particularly the teeth portion inner surface covering portions 21e, 22e).

  Then, the insertion jig 31 and the receiving jig 32 are moved relative to each other in the direction away from each other to remove the insertion portion 31a, and the first and second insulator members 21 are further pushed by the pushing member 33 (see FIG. 12). , 22 are moved relative to each other in the axial direction, so that the tooth portion 7 is inserted until it comes into contact with the tooth portion one end surface covering portions 21b, 22b. In this way, the assembly of the insulator 4 (first and second insulator members 21, 22) is completed.

  Next, in the winding process, as it is, that is, the divided core member 11 (first and second insulator members 21 and 22) is not rotated with respect to each other, and the tooth portion 7 is separated from the adjacent tooth portions 7 in the circumferential direction. In this state, the winding 5 (see FIG. 1) is wound. Therefore, the teeth portions 7 adjacent in the circumferential direction do not get in the way, and the winding 5 can be easily wound with a high space factor. Then, as shown in FIG. 1, the split core members 11 (first and second insulator members 21, 22) are connected to each other so that the split annular portion 12 is annular (so as to form the annular portion 8). Rotate. In this way, the manufacture of the stator 1 is completed.

Next, characteristic effects of the above embodiment will be described below.
(1) In the deformation process, a pair of slot inner surface covering portions (annular portion inner surface covering portions 21d and 22d, teeth portion inner surface covering portions 21e and 22e, extension portion inner surface covering portions are formed by the insertion jig 31 and the receiving jig 32. 21f and 22f) are elastically deformed toward the slot center X (see FIGS. 1, 9, and 11) viewed from the axial direction. In the inserting step, the split core member 11 (especially the tooth portion 7) is inserted between the pair of slot inner side surface covering portions (particularly the tooth portion inner side surface covering portions 21e and 22e) in an elastically deformed state. Therefore, the slot inner surface covering portions (annular portion inner surface covering portions 21d and 22d, teeth portion inner surface covering portions can be provided without positioning the first and second insulator members 21 and 22 and the divided core members 11 with high accuracy. 21e and 22e, and the split core member 11 including the tooth portion 7 is prevented from colliding with the tip of the extended portion inner side surface covering portions 21f and 22f). Thereby, the insulator 4 (the 1st and 2nd insulator members 21 and 22) can be mounted | worn easily.

  (2) The insertion jig 31 includes an insertion portion 31a extending along the direction in which the teeth portion 7 extends (downward in FIG. 9). The width of the insertion portion 31a is increased toward the proximal end side. A widened portion 31b is formed. In the deformation step, the insertion portion 31a is inserted between the pair of slot inner side surface covering portions (particularly, the teeth portion inner side surface covering portions 21e and 22e) from the direction perpendicular to the axis (upward in FIG. 9). The inner surface covering portions of the slots (in particular, the inner surface covering portions 21e and 22e of the teeth portions) are elastically deformed so as to widen. Therefore, the deformation process can be performed easily (without driving the jig in many directions) while using a simple jig.

  (3) The insertion portions 31a are arranged at predetermined intervals and their base end portions are connected by a straight jig connecting portion 31c. And each insertion part 31a is simultaneously inserted from an axial orthogonal direction between each pair of slot inner side surface coating | coated parts (especially teeth part inner surface coating | coated part 21e, 22e), each pair of slot inner side surface coating | coated part ( In particular, it is simultaneously elastically deformed so that the distance between the teeth inner surface covering portions 21e, 22e) is increased. Therefore, the deformation process can be easily performed while using a simple jig, and the speed of the deformation process can be increased.

  (4) The receiving jig 32 is disposed to face the jig connecting portion 31c. In the deforming step, the annular portion inner side surface covering portions 21d and 22d and the extending portion inner side surface covering portions 21f and 22f of the slot inner surface covering portion are extended in the direction in which the teeth portion 7 extends (the jig connecting portion 31c and the receiving jig 32). 9 and FIG. 11 is sandwiched from the direction corresponding to the vertical direction). Therefore, the slot inner side surface covering portion, that is, the first and second insulator members 21 and 22 can be stably held in the direction corresponding to the extending direction of the teeth portion 7 to perform the insertion process.

  (5) In the deformation step, the annular portion inner side surface covering portions 21d and 22d and the extending portion inner side surface covering portions 21f and 22f of the slot inner surface covering portion extend in the extending direction of the teeth portion 7 by the jig connecting portion 31c and the receiving jig 32. Therefore, the deformation process can be easily performed with a simple jig (without driving the jig in many directions). In this way, the annular portion inner surface covering portions 21d and 22d and the extending portion inner surface covering portions 21f and 22f of the slot inner surface covering portion are compressed in a direction corresponding to the extending direction of the teeth portion 7 (slot center X Side) elastically deformed. Therefore, the divided annular portion 12 and the circumferentially extending portion 13 of the divided core member 11 are prevented from colliding with the tips of the annular portion inner surface covering portions 21d and 22d and the extending portion inner surface covering portions 21f and 22f.

The above embodiment may be modified as follows.
In the above-described embodiment, the first and second insulator members 21 and 22 include the annular one end surface covering portions 21a and 22a, the tooth one end surface covering portions 21b and 22b, and the extending portions constituting the axial one end surface covering portion. Although it has provided the installation part one end surface coating | coated part 21c, 22c, as long as it has the teeth part one end surface coating | coated part 21b, 22b, you may change into another shape.

  In the above-described embodiment, the first and second insulator members 21 and 22 include the annular portion inner surface covering portions 21d and 22d, the tooth portion inner surface covering portions 21e and 22e, and the extending portion inner surface that constitute the slot inner surface covering portion. Although the covering portions 21f and 22f are provided, the shape may be changed to another shape as long as the covering portions 21e and 22e are provided at least at the teeth portion inner side surfaces.

  In the above embodiment, the insertion jig 31 and the receiving jig 32 constitute the deformation jig. However, the deformation jig includes a pair of slot inner side surface covering portions (annular portion inner surface covering portions 21d and 22d, If the teeth portion inner side surface covering portions 21e and 22e and the extension portion inner side surface covering portions 21f and 22f) can be elastically deformed toward the slot center X side, they may be changed to other jigs.

  For example, you may change to the jig | tool which is latched by a pair of teeth part inner surface coating | coated part 21e, 22e, and is driven so that they may mutually be pulled apart. Further, for example, the receiving jig 32 is not provided, and the pair of teeth portion inner side surface covering portions 21e is simply inserted by inserting the insertion portion 31a (widened portion 31b) into the fixed first and second insulator members 21, 22. , 22e may be used as a deformation jig.

  In the above embodiment, the split core member 11 includes the tooth portion 7, the split annular portion 12, and the circumferentially extending portion 13. However, as long as it has at least the tooth portion 7, other shapes (for example, Alternatively, it may be changed to a split core member in which the circumferentially extending portion 13 is not formed.

  In the above embodiment, the first and second insulator members 21 and 22 are rotatably connected by inserting the insertion convex portion 21g into the insertion hole 22g. However, the present invention is not limited to this. Alternatively, the insulator member may be changed to a plurality of integrally formed insulator members that are rotatably connected by the thin-walled portion.

  In the above embodiment, the stator core 6 is composed of the twelve divided core members 11, but may be changed to a stator core composed of other numbers of divided core members as long as there is a plurality. Of course, in this case, it is also necessary to change the number of the first and second insulator members 21 and 22.

The technical idea that can be grasped from the above embodiments will be described below together with the effects thereof.
(B) a method of assembling Lee Nshureta, that the after assembling method, and a winding step of winding the winding in a state of being apart from the teeth adjacent the tooth portions in the circumferential direction A method for manufacturing a stator. If it does in this way, in addition to the effect by the assembly | attachment method of an insulator , a coil | winding can be wound easily and with a high space factor.

  (B) Axial one end surface covering portion for covering the one end surface in the axial direction of the divided core member on a plurality of divided core members having teeth portions arranged to extend radially and allowed to rotate with respect to each other. And a plurality of insulator members that extend in the axial direction from the axial one end surface covering portion and are connected to each other so as to be rotatable. An insulator assembling apparatus for mounting, comprising: a deforming jig for elastically deforming the pair of inner surface covering portions of the slot toward the center of the slot. If it does in this way, a pair of slot inner side surface coating | coated part of an insulator member will be elastically deformed to the slot center side with a deformation | transformation jig | tool. Therefore, by inserting the split core member between the pair of slot inner side surface covering portions in the elastically deformed state, the positioning of the respective insulator members and the respective split core members can be performed without high accuracy, respectively. The split core member is prevented from colliding with the tip of the covering portion.

  (C) In the insulator assembling apparatus according to (b), the deformation jig includes an insertion portion extending along a direction in which the teeth portion extends, and the insertion portion is closer to the proximal end side. An assembly apparatus for an insulator, wherein a widened portion having a large width is formed. In this case, the insertion portion of the deformation jig is inserted between the pair of slot inner surface covering portions from the direction orthogonal to the axis, so that the gap between the pair of slot inner surface covering portions is elastically deformed. It is possible to easily widen the distance between the pair of inner side surface covering portions of the slots while making a simple jig (without driving the jig in many directions).

  (D) In the insulator assembling apparatus described in (c) above, the insertion portions of the deformation jig are arranged at predetermined intervals and their base end portions are arranged by a straight jig connecting portion. An assembly apparatus for an insulator, characterized by being connected. In this way, by simultaneously inserting each insertion portion of the deformation jig between each pair of slot inner surface covering portions from the direction perpendicular to the axis, the distance between each pair of slot inner surface covering portions can be increased simultaneously. Since it is elastically deformed, the distance between each pair of slot inner side surface covering portions can be increased easily (without driving the jig in many directions) and at a high speed while using a simple jig.

  (E) The insulator assembly apparatus according to (d) above, wherein the deformation jig includes a receiving jig arranged to face the jig coupling portion. apparatus. If it does in this way, a slot inner side surface coating | coated part can be clamped from the direction corresponding to the extending direction of a teeth part with a jig | tool connection part and a receiving jig. Therefore, the split core member is inserted between the pair of slot inner surface covering portions in a state in which the slot inner surface covering portion, that is, the insulator member is stably held and elastically deformed in a direction corresponding to the extending direction of the teeth portion. be able to. Further, the slot inner side surface covering portion can be sandwiched from the direction corresponding to the extending direction of the tooth portion by the jig connecting portion and the receiving jig, and can be further elastically deformed. In this way, the inner surface covering portion of the slot is easily compressed with a simple jig (without driving the jig in a number of directions) in a direction corresponding to the extending direction of the tooth portion (the slot It can be elastically deformed (to the center side). Therefore, even if there is a radially projecting portion (a divided annular portion or a circumferentially extending portion) at the base end portion or the tip end portion of the tooth portion, the portion may collide with the tip of the slot inner surface covering portion. Can be prevented.

The principal part sectional drawing of the brushless motor of this Embodiment. The top view at the time of developing the stator core of this Embodiment. The perspective view of the 1st insulator member of this Embodiment. The top view of the 1st insulator member of this Embodiment. The perspective view of the 2nd insulator member of this Embodiment. The top view of the 2nd insulator member of this Embodiment. The top view for demonstrating the insulator of this Embodiment. Explanatory drawing for demonstrating the assembly | attachment method of the insulator of this Embodiment. Explanatory drawing for demonstrating the assembly | attachment method of the insulator of this Embodiment. Explanatory drawing for demonstrating the assembly | attachment method of the insulator of this Embodiment. Explanatory drawing for demonstrating the assembly | attachment method of the insulator of this Embodiment. Explanatory drawing for demonstrating the assembly | attachment method of the insulator of this Embodiment.

Explanation of symbols

  7 ... Teeth part, 11 ... Split core member, 21, 22 ... First and second insulator members, 21a, 22a ... Annular part one end face covering part, 21b, 22b constituting part of the axial one end face covering part, 21b, 22b ... Teeth portion one end surface covering portion constituting a part of the axial one end surface covering portion, 21c, 22c... Extension portion one end surface covering portion constituting a part of the axial one end surface covering portion, 21d, 22d. An annular portion inner side surface covering portion constituting a part of the covering portion, 21e, 22e... Teeth portion inner side surface covering portion constituting a part of the slot inner surface covering portion, 21f, 22f. Extension part inner side surface covering part, 31 ... Insertion jig constituting a part of the deformation jig, 31a ... Insertion part, 31b ... Widening part, 31c ... Jig connecting part, 32 ... Part of the deformation jig Constructing jig, X ... slot center

Claims (6)

Constitute a core slot is formed between the teeth adjacent a plurality of teeth portions in the annular portion and the radially Ru extends placed by radially from the annular portion, dividing the annular portion in the circumferential direction A plurality of divided core members each having a divided annular portion and a tooth portion extending in a radial direction from the divided annular portion, each of which is allowed to rotate at the end of the divided annular portion ,
Wherein an annular part end surface covering portion for covering the axial end face of the split ring part, and the teeth portion end surface covering portion for covering the axial end face of the tooth portion, the shaft from the annular portion one end face covering portion A pair of teeth extending in the direction and covering the inner surface of the slot in the divided annular portion ; and a pair of teeth extending in the axial direction from the one end surface covering portion of the teeth and covering the inner surface of the slot in the teeth portion and a part inner surface covering portion, a insulator assembly method of mounting a plurality of insulators members which are pivotally connected to each other,
A deformation step of elastically deforming the pair of teeth portion inner surface covering portions toward the center of the slot with a deformation jig and elastically deforming the annular portion inner surface covering portions toward the center of the slot with a deformation jig ;
An assembly step of inserting the tooth portion of the split core member between the pair of teeth portion inner surface covering portions in a state of being elastically deformed after the deformation step; Method. The method of assembling an insulator according to claim 1,
The split core member has a circumferentially extending portion extending in a circumferential direction from a tip of the teeth portion on the side opposite to the split annular portion, and the insulator member covers an axial end surface of the circumferentially extending portion. An extending portion one end surface covering portion, and an extending portion inner surface covering portion that extends in the axial direction from the extending portion one end surface covering portion and covers the inner surface of the slot in the circumferential extending portion,
In the deformation step, the annular portion inner side surface covering portion and the extension portion inner surface covering portion are sandwiched from a direction corresponding to a direction in which the teeth portion extends by using a deformation jig. A method for assembling an insulator, comprising elastically deforming the inner surface covering portion of the installation portion toward the center of the slot. The method of assembling an insulator according to claim 2 ,
Prior Symbol deformation step, the insert portion of the deformed jig widened portion whose width in the insert includes an insert portion that extends along a direction increases toward the base end side is larger is formed of extension of said teeth Is inserted between the pair of teeth portion inner side surface covering portions from the direction orthogonal to the axis, and is elastically deformed so that the distance between the pair of teeth portion inner side surface covering portions is widened. . The assembly method of the insulator according to claim 3 ,
The insertion portions in the deformation jig are arranged at predetermined intervals and their base end portions are connected by a straight jig connection portion,
In the deformation step , the insertion portions are simultaneously inserted between the pair of teeth portion inner surface covering portions from the direction orthogonal to the axis so that the distance between each pair of teeth portion inner surface covering portions is widened. A method for assembling an insulator, wherein the insulator is simultaneously deformed. The method of assembling an insulator according to claim 4 ,
The deformation jig includes a receiving jig arranged to face the jig connecting portion,
The elastic deformation of the annular portion inner surface covering portion and the extending portion inner surface covering portion toward the center of the slot in the deformation step is performed by the jig connecting portion and the receiving jig in the annular portion inner surface covering portion and the extending portion. assembling method of the insulator, which comprises carrying out by sandwiching the portion in the side surface covering portion from a direction corresponding to the direction of extension of the teeth. An assembly method of the insulator according to any one of claims 1 to 5,
After the assembling method, a winding step of winding the winding in a state where the teeth portion is separated from the teeth portions adjacent in the circumferential direction;
After the winding step, rotating the split core members relative to each other so that the split annular portion forms the annular portion;
A stator manufacturing method comprising:

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