JP5562045B2 - Stator assembly method and assembly apparatus - Google Patents

Description

  The present invention relates to a stator assembling method in which a plurality of divided core pieces each including a tooth and a core back portion are annularly arranged, and an assembling apparatus therefor.

  2. Description of the Related Art Conventionally, a stator of a rotating electrical machine includes a cylindrical stator core having a plurality of teeth (magnetic poles) that are arranged radially and project in the inner diameter direction and a plurality of slots that are opened therebetween. A winding for winding a wire is performed on each tooth, and a stator coil made of the wound wire is placed in each slot. As a method of manufacturing such a stator, the stator core is divided into a plurality of divided core pieces in the circumferential direction for each tooth, and a bobbin for insulation is attached to the teeth in the divided core piece, and the wound member. A method is known in which a bobbin is wound into a coil, and a plurality of divided core pieces each provided with such a coil are then assembled. In this way, by dividing the stator core into a plurality of divided core pieces, the coil can be wound while securing the trajectory necessary for the movement of the nozzle of the winding machine. It is said that the moment can be obtained.

  In recent years, U-phase, V-phase, and W-phase coil groups are continuously wound around separate teeth in a plurality of divided core pieces, and a plurality of divisions having a coil group that is continuous via a jumper wire. The core piece is then arranged annularly. Thus, it is supposed that the connection of the coil in each division | segmentation core piece can be made unnecessary by connecting between the coils in each division | segmentation core piece from the beginning with a crossover. And the method of arrange | positioning without connecting the connecting wire connected to the terminal by making the position of the connecting wire rising from each of the plurality of coils forming the coil group of each phase different for each phase of the coil group is proposed. (For example, refer to Patent Document 1). In this method, since the crossover lines do not intersect, the coil end is reduced, and the axial length of the rotating electrical machine can be shortened.

Japanese Patent No. 3732076 (paragraph number 0006, FIG. 1, FIG. 7 (c))

  However, by connecting the coils in the split core pieces from the beginning with the crossover wires, the subsequent connection is not necessary, but a plurality of split core pieces are connected via the crossover wires, and assembling these split core pieces. There was a problem that handling becomes difficult.

  That is, the plurality of divided core pieces connected via the crossover lines are then arranged in a ring shape. However, as shown in FIG. The teeth 2a are arranged in a relatively large ring shape so as to form a radial shape, and then, the plurality of divided core pieces 2 are moved toward the center C of the circle drawn by them. Both sides are brought into contact with the side surfaces of the adjacent split core pieces 2. As a result, the length of the connecting wire 3 is such that a plurality of divided core pieces 2 can be spaced apart from the adjacent divided core pieces 2 and arranged in a relatively large ring shape, as shown by a one-dot chain line in FIG. A sufficient length is required.

  However, when a plurality of divided core pieces 2 that are separated from each other are moved toward the center C as indicated by solid arrows, and both sides of each divided core piece 2 are brought into contact with the side surfaces of the adjacent divided core pieces 2, The crossover line 3 is slack as shown by the solid line. The slack crossover wire 3 is routed to the coil end 4a portion which is an end surface in the axial direction of the stator 1 obtained by arranging the plurality of divided core pieces 2 in an annular shape. 3 is projected from the coil end 4a to the outside in the axial direction of the stator 1, and the connecting wire 3 is separated from the coil end 4a so that the axial length of the rotating electrical machine cannot be sufficiently shortened. Issues that should remain were left.

  Further, the work of drawing the connecting wire 3 closer to the coil end 4a must be performed manually, and a jig or the like used for routing may come into contact with the coil 4 during the drawing work. In this case, the surface of the coil 4 may be damaged and its reliability may be lowered. For this reason, careful attention is required for the work, and there has been a limit to increase the efficiency of the routing work. Therefore, if the connecting wire 3 can be formed into a predetermined shape before the connecting wire 3 approaches the coil 4, the attention required for the subsequent drawing work is reduced, and the efficiency of the drawing operation is improved. The reliability can be expected to be remarkably improved.

  An object of the present invention is to provide a stator assembling method and an assembling apparatus capable of shortening the connecting wire at both ends of the stator and sufficiently miniaturizing the end coil portion including the connecting wire.

The stator assembling method of the present invention includes a plurality of divided core pieces each including a tooth, a core back portion, and a coil wound around the tooth and continuing through a crossover wire , the core back portion forms a circle and the teeth are radial. It is improvement of the method of arrange | positioning cyclically | annularly so that it may comprise.

The characteristic point is that the plurality of divided core pieces are arranged in a ring shape in a state where the teeth face upward or downward, and an annular arrangement step of arranging a crossover line inside the plurality of divided core pieces arranged in an annular shape. And a standing step of standing up the plurality of divided core pieces arranged in a ring so that the teeth form a radial shape around the crossover line .

The stator assembling apparatus according to the present invention includes a plurality of split core pieces each including a tooth, a core back portion, and a coil that is wound around the teeth and continuous via a crossover, and the core back portion forms a circle and the teeth are radially formed. It is a device that is arranged in an annular shape to form.

The characteristic configuration is a plurality of core mounts that are arranged in a ring shape in a recumbent state and can be mounted with a plurality of split core pieces in a recumbent state in which the teeth face upward or downward with the connecting line inside . In addition to the plurality of divided core pieces, there is provided an operation mechanism that causes the plurality of core mounts to stand up at the same time centering on the crossover lines to radially form the teeth of the plurality of divided core pieces.

  The operation mechanism preferably includes a plurality of parallel link mechanisms that are provided for each core mount and can stand a lying core mount.

  In the stator assembling method and the assembling apparatus thereof according to the present invention, since the plurality of divided core pieces are arranged in a ring shape in a recumbent state, the adjacent divided core pieces are arranged inside the plurality of divided core pieces arranged in an annular shape. Can be shortened. For this reason, if a crossover line is arranged inside a plurality of split core pieces arranged in an annular shape and a plurality of split core pieces are erected around the crossover line, the required length of the crossover line is reduced. It can be made shorter than before. And by making the length of the connecting wire shorter than before, the space factor of the connecting wire routed at the coil end of the obtained stator is increased, and the end coil portion including the connecting wire is sufficiently miniaturized. can do. In addition, the total length of the wire for manufacturing the coil is reduced, the copper loss in the coil is reduced, the efficiency of the rotating electrical machine using the obtained stator is improved, and the outer shape of the rotating electrical machine can be reduced in size. It becomes possible.

It is an enlarged view of the A section of FIG. 8 which shows the assembly state of the stator of embodiment of this invention. It is a top view which shows the state by which the some division | segmentation core piece of the lying state was arrange | positioned cyclically | annularly. FIG. 3 is a top view corresponding to FIG. 2 showing a state in which a plurality of divided core pieces forming one phase are arranged in an annular shape. It is a figure which shows several division | segmentation core pieces which form the one phase connected via the crossover. It is a top view which shows the coil end by which the connecting wire of the stator by which a core mount stood up and the some division | segmentation core piece arrange | positioned cyclically | annularly was arrange | positioned. It is a top view which shows the assembly apparatus of the stator of embodiment of this invention. It is a front block diagram in which the core mount of the assembling apparatus is in a lying state. It is a front block diagram corresponding to FIG. 7 in which the core mount stands up. It is a front block diagram corresponding to FIG. 7 which shows the state which the raising / lowering plate fell. It is the front block diagram corresponding to FIG. 7 which shows the state which the several division | segmentation core piece which stood up and comprised the cyclic | annular form was pushed up. It is a perspective view which shows the division | segmentation core piece which comprises the stator. It is sectional drawing in the plane orthogonal to the central axis of the stator. It is a figure corresponding to Drawing 1 showing the state where the split core piece was mounted in the inclined core mount. It is a figure which shows the assembly of the conventional stator.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings.

  FIG. 12 shows a cross section of the split core type stator 10 obtained by the present invention. The stator 10 has a stator core composed of a plurality of divided core pieces 11 divided in the circumferential direction for each tooth 11a, and an insulating bobbin 13 as a member to be wound on the teeth 11a of the divided core piece 11. The bobbin 13 includes a coil 16 having a winding. Specifically, the split core piece 11 includes an arc-shaped core back portion 11b and a tooth 11a protruding from the inner peripheral surface of the core back portion 11b toward the arc center of the inner peripheral surface. The divided core piece 11 in this embodiment is made of a magnetic material, and is formed by laminating a substantially T-shaped core laminated plate having a core back portion 11b and a tooth 11a having a certain thickness so as to have a predetermined thickness. A laminated type constituted by fixing is shown.

  As shown in FIG. 11, the bobbin 13 as a member to be wound is made of an insulating resin. The bobbin 13 includes a cylindrical body part 13a into which the teeth 11a are inserted, and a core back part in the cylindrical body part 13a. The outer peripheral side flange 13b integrally formed in the edge part on the 11b side, and the inner peripheral side flange 13c integrally formed in the edge part of the stator 10 inner peripheral side in the cylindrical trunk | drum 13a are provided. A pair of arcuate plate members 14 and 14 are integrally formed on the outer peripheral side flange 13b of the bobbin 13 so as to cover both end faces of the core back portion 11b of the split core piece 11 in the central axis direction of the stator 10. A wire rod is wound around 13 to form a coil 16 (FIG. 12). FIG. 12 illustrates a stator 10 having three phases and 12 slots. In this stator 10, the divided core pieces 11 in one phase coil group are arranged at a pitch of 90 degrees, and a three phase U coil group and a V coil group are arranged. The W coil group is arranged every 30 degrees, and the stator 10 is obtained by arranging the plurality of divided core pieces 11 in an annular shape so that the core back portion 11b forms a circle and the teeth 11a form a radial shape.

  The stator assembly device 20 (FIGS. 6 and 7) of the present invention can arrange a plurality of divided core pieces 11 in an annular shape. In particular, as shown in FIG. 4, the wire is continuously wound around the bobbin 13 in the plurality of divided core pieces 11, and is spanned between the coils 16 to electrically connect the coils 16 and 16. This is suitable for assembling a structure composed of a plurality of split core pieces 11 continuous through 16a. Here, the wire in this embodiment shows the case where it is a round wire with a circular cross section with an insulating film formed on the surface. The assembly apparatus 20 of the present invention will be described on the assumption that three axes X, Y, and Z orthogonal to each other are set, the X axis extends in the horizontal front-rear direction, the Y axis extends in the horizontal horizontal direction, and the Z axis extends in the vertical direction.

  As shown in FIGS. 6 and 7, the stator assembling apparatus 20 of the present invention includes a plurality of core mounts 21 configured to be capable of mounting the split core pieces 11, and the core mounts 21 are rotated to stand or stand upright. And an operating mechanism 22 that can be in a state. The operation mechanism 22 includes a plurality of parallel link mechanisms 23 provided for each core mount 21, and the core mount 21 is attached to the base 24 via the link mechanism 23. The numbers of the parallel link mechanisms 23 and the core mounts 21 vary depending on the specifications of the stator 10 to be obtained, and are determined according to the number of teeth 11a. In this embodiment for obtaining a three-phase 12-slot stator 10 (FIG. 12), twelve core mounts 21 are provided corresponding to the number of divided core pieces 11, and the twelve core mounts 21 are twelve parallel link mechanisms 23. Are provided radially (FIG. 6). The plurality of parallel link mechanisms 23 are annularly provided on the base 24 with a predetermined interval in the circumferential direction, and since they have the same structure, the structure will be described below as a representative of one of them. .

  As shown in FIG. 1, the parallel link mechanism 23 has a pair of parallel horizontal link members 23a and 23b and a pair of parallel vertical link members 23c and 23d. Made by. A support plate 26 that supports the link mechanism 23 is provided on the horizontal upper plate 24a of the base 24 in a radial manner when viewed from above (FIGS. 6 and 7), and the parallel link mechanism 23 is disposed outside the support plate 26. The end edges of the pair of parallel horizontal link members 23 a and 23 b are pivotally supported by the support plate 26. This pivoting is performed such that an imaginary line M connecting the pivot points on the support plate 26 is parallel to the vertical link members 23c and 23d, and these imaginary lines M on the plurality of support plates 26 are located upward in the Z-axis direction. Inclined so as to approach each other. That is, the inner edges of the pair of parallel horizontal link members 23a and 23b pivot to the support plate 26 so that the virtual line M inclined to the center line C of the circle drawn by the plurality of support plates 26 approaches upward. Be supported. Thus, the pair of parallel horizontal link members 23a and 23b are pivotally supported by the support plate 26 on the inner side, so that the position is lowered downward toward the outer side and the first position shown in FIG. The position of the support plate 26 is configured to be rotatable about a pivot point in the support plate 26 between the second position shown in FIGS. 1 and 8 to 10 which is directed upward and substantially orthogonal to the first position.

  As shown in FIGS. 6 and 7, a first ring member 27 that surrounds the plurality of support plates 26 is provided on the upper portion of the base 24. On the other hand, a second ring member 29 parallel to the first ring member 27 connected to the first ring member 27 via a plurality of connecting rods 28 is provided inside the base 24. The connecting rod 28 penetrates the upper plate 24a of the base 24 and is provided so as to be movable up and down. A cylinder 31 is provided inside the base 24 as a drive source for moving the second ring member 29 up and down. The cylinder 31 is fixed to an attachment plate 33 fixed to the upper plate 24a via a fixing column 32, and the rod 31a is protruded to raise the second ring member 29 together with the first ring member 27, and the rod 31a. The second ring member 29 can be lowered together with the first ring member 27 by immersing the first ring member 27.

  As shown in FIG. 1, the lower end of one of the pair of parallel vertical link members 23 c and 23 d constituting the link mechanism 23 is locked to the first ring member 27. That is, a roller 34 is pivotally supported at the lower end of the parallel vertical link member 23c on the inner side, and the upper surface of the first ring member 27 can accommodate the roller 34 and move in the horizontal direction, and move in the vertical direction. Impossible guide members 36 are attached radially when viewed from above (FIG. 6). By locking the lower end of the inner parallel vertical link member 23c to the first ring member 27 in this way, the parallel vertical link member 23c is also raised and lowered by raising and lowering the first ring member 27, thereby a pair of parallel horizontal links. The members 23 a and 23 b are configured to be rotatable around a pivot point in the support plate 26. As shown in FIG. 7, the first ring member 27 is in the lowered position, and the pair of parallel horizontal link members 23a and 23b is in the first position, and as shown in FIGS. It is configured such that the member 27 is in the raised position and the pair of parallel horizontal link members 23a and 23b are in the second position.

  A support base 37 is pivotally supported on the upper ends of the pair of parallel vertical link members 23c and 23d in parallel with the parallel horizontal link members 23a and 23b, and the core mount 21 is attached to the support base 37. This support base 37 constitutes the parallel link mechanism 23 together with a pair of parallel horizontal link members 23a and 23b, and this support base 37 is also connected between the first position and the second position together with the parallel horizontal link members 23a and 23b. Configured to be rotatable. The core mount 21 is attached to the support base 37 so that the parallel horizontal link members 23a and 23b are in a horizontal state parallel to the horizontal plane at the first position, and the plurality of core mounts 21 attached via the link mechanism 23 are shown in FIG. As shown in FIG. 6, in a recumbent state, they are arranged annularly at a predetermined interval in the circumferential direction, and are arranged radially in a top view. The core mount 21 in the recumbent state is configured such that the split core piece 11 can be mounted in a recumbent state with the teeth 11a facing upward (FIG. 7).

  The core mount 21 in this embodiment is made of a permanent magnet, and the core back portion 11b (FIG. 5) of the divided core piece 11 mounted in a lying state is attracted to the upper surface thereof, and the divided core piece 11 is attached to the core mount 21. It can be fixed to. Since the core mount 21 is attached to a support base 37 that can rotate between the first position and the second position, the core mount 21 can also rotate together with the support base 37, and the first ring member 27 rises in parallel. When the horizontal link members 23a and 23b are in the second position, the core mount 21 rotates so as to raise the outside thereof, and is configured to be able to stand up together with the mounted split core piece 11 in the lying state. Since the parallel horizontal link members 23a and 23b in this embodiment can be rotated by approximately 90 degrees, when the core mount 21 is rotated 90 degrees from the recumbent state and stands up, the teeth 11a are divided in a recumbent state facing upward. The core piece 11 is also erected together with the core mount 21 as shown by the broken line arrow in FIG. 1, and the teeth 11a are radially directed toward the inside as shown in FIG.

  As shown in FIG. 7, the assembling apparatus 20 includes an extruding mechanism 41 that is removed by shifting the upright divided core piece 11 from the upright core mount 21, and the divided core piece 11 pushed out by the extruding mechanism 41. A cylinder fixing mechanism 51 that guides and stores the gas in the holding cylinder 38 is provided. The push-out mechanism 41 is configured to be vertically extended in the center surrounded by the support plate 26 provided radially, and to be attached to the mounting plate 33 so that the cylindrical member 42 can be moved up and down. A servo motor 43 that is an elevator is provided. A control output from a controller (not shown) is connected to the servo motor 43. When the servo motor 43 is driven and the cylindrical member 42 is raised by a command from the controller, the cylindrical member 42 is raised as shown in FIG. The divided core piece 11 is pushed up to be separated from the core mount 21. And the recessed part 42a which can accommodate the lead wire 16b (FIG. 4) pulled out from the coil 16 in the division | segmentation core piece 11 is formed in the center of the cylindrical member 42. As shown in FIG.

  On the other hand, the cylinder fixing mechanism 51 includes a moving base 52 provided so as to be movable in the Y-axis direction above the upright divided core piece 11 and a lifting plate 53 attached to the moving base 52 so as to be able to move up and down. A support 54 is erected on the upper plate 24 a of the base 24 so as to sandwich the link mechanism 23 arranged in an annular shape from both sides in the X-axis direction, and a rail 56 extending in the Y-axis direction is provided at the upper end of the support 54. It is done. The movable table 52 is installed between the rail 56 and the rail 56. The movable table 52 covers the annular parallel link mechanism 23 from above and covers the parallel link mechanism 23 as shown in FIG. It is comprised so that it can move between the open positions which remove | deviate from and open | release the upper direction. The moving table 52 is provided with an air cylinder 57 that vertically brings the rod 57a to the lower side of the rod 57a, and an elevating plate 53 is attached to the lower end of the rod 57a.

  A vertical guide bar 58 penetrating the moving table 52 is attached to the lift plate 53. A control output from a controller (not shown) is connected to the air cylinder 57. When a rod 57a in the air cylinder 57 protrudes according to a command from the controller, the lift plate 53 is lowered, as shown in FIGS. As shown in FIG. 8, when the rod 57a in the air cylinder 57 is immersed, the elevating plate 53 is configured to rise. The holding cylinder 38 is detachably attached to the elevating plate 53, and the moving base 52 is formed with an opening 52a that faces the holding cylinder 38 and allows the holding cylinder 38 to be inserted and removed. The holding cylinder 38 is configured to be able to insert a plurality of divided core pieces 11 that are erected and arranged in an annular shape in an annularly arranged state.

  Next, a method for assembling the stator in the present invention will be described.

  In the assembly method of the present invention, as shown in FIG. 12, a plurality of divided core pieces 11 composed of teeth 11a and a core back portion 11b are arranged in an annular shape so that the core back portion 11b forms a circle and the teeth 11a form a radial shape. As shown in FIG. 2, an annular arrangement step of arranging a plurality of divided core pieces 11 in a lying state as shown in FIG. 2, and a plurality of divided core pieces arranged in an annular shape as shown in FIG. 11 can be divided into a standing-up process for standing up. Each step will be described below.

<Ring arrangement process>
In this step, a plurality of divided core pieces 11 each having a coil 16 wound around a tooth 11a are prepared, and the plurality of divided core pieces 11 are in a recumbent state with the teeth 11a facing upward or downward as shown in FIG. Arranged in a ring. The plurality of divided core pieces 11 may include a coil 16 that is continuous via the crossover wire 16a. In this embodiment illustrating the stator 10 having a three-phase 12-slot configuration, as shown in FIG. 4, one in which wires are continuously wound around four divided core pieces 11 is prepared. Then, the four divided core pieces 11 become a group which continues through the connecting wire 16a which electrically connects each coil 16, and the group where these four divided core pieces 11 continue is a U phase, a V phase, and Three sets of W phase are prepared. In this step, the plurality of divided core pieces 11 connected by the crossover wires 16a are placed in a recumbent state and arranged annularly. Here, reference numeral 16b in FIG. 4 indicates a lead wire 16b drawn from the coil 16 at both ends forming a group.

  When the assembly apparatus 20 is used in the arrangement of the split core pieces 11, the core mount 21 in a recumbent state is arranged radially as viewed from above as shown in FIG. 3 with the moving base 52 in the open position shown in FIG. The respective divided core pieces 11 are arranged on the reed on the upper side. The recumbent state refers to a state in which the teeth 11a face upward or downward and the axes of the teeth 11a are not on the same plane, and the axes of the teeth 11a in each divided core piece 11 are on the same plane. If not, this includes the case where the axis is inclined with respect to the vertical direction. In this embodiment, the case where the core back part 11b in the split core piece 11 is brought into contact with the core mount 21 and the teeth 11a face upward in the vertical direction is illustrated. Then, as shown in FIGS. 3 and 7, by arranging the divided core pieces 11 on the core mounts 21 arranged radially at predetermined intervals in the circumferential direction, the plurality of divided core pieces 11 are circularly arranged. They can be arranged in a ring with a predetermined interval in the circumferential direction.

  In this annular arrangement step, the crossover wires 16a are arranged inside the plurality of divided core pieces 11 arranged in an annular shape. In this embodiment, since the four divided core pieces 11 are continuous through the crossover line 16a in each phase, as shown in FIG. 3, the divided core pieces 11 of one phase are arranged every 90 degrees. . At this time, the connecting wires 16a connecting the divided core pieces 11 are arranged inside the plural divided core pieces 11 arranged in an annular shape, and the connecting wires 16a are formed into a desired shape. When the plurality of divided core pieces 11 are arranged in a ring shape, the connecting wire 16a is separated from the coil 16, so that even if the forming operation of the connecting wire 16a is performed using a jig or the like, the jig or the like is used as the coil 16 There is no such thing as touching. In FIG. 3, the case where the connecting wire 16a is formed so as to form an arc shape along the divided core pieces 11 arranged in an annular shape is shown. Then, the arrangement of the split core pieces 11 and the forming of the connecting wires 16a are performed in each phase, and the split core pieces 11 in the U, V, and W phases are placed on the core mount 21 every 30 degrees as shown in FIG. The crossover wires 16a are formed into a desired shape.

<Standing process>
In this step, the plurality of divided core pieces 11 arranged in an annular shape are erected so that the teeth 11a form a radial shape. When the assembly device 20 is used to stand up the split core piece 11, as shown in FIG. 8, the rod 31 a of the cylinder 31 provided inside the base 24 is protruded and the first ring together with the second ring member 29. The ring member 27 is raised, and the parallel horizontal link members 23a and 23b at the first position are rotated to the second position. As a result, the core mount 21 also rotates in the same manner as the parallel lateral link members 23a and 23b, and the core mount 21 is rotated 90 degrees from the recumbent state and stands up. Then, the split core piece 11 in the recumbent state with the teeth 11a facing up also rises together with its core mount 21, and as shown in FIG. 5, the plurality of split core pieces 11 have a core back portion 11b in a circle and its The teeth 11a face inward, and the axial centers thereof are radially formed on the same plane.

  Here, although the connecting wire 16a is arrange | positioned inside the some division | segmentation core piece 11 arrange | positioned cyclically | annularly, in this standing up process, the some division | segmentation core piece 11 is made to stand centering on the connection line 16a. As shown in FIG. 1, since the core mount 21 in the apparatus 20 is attached to the support base 37 constituting the parallel link mechanism 23 together with the parallel lateral link members 23a and 23b, the rotation center thereof is the parallel lateral link member 23a. , 23b and the phantom line M connecting the pivot points of the support plate 26 and the imaginary line N connecting the parallel longitudinal link members 23c and 23d and the pivot point of the support base 37. When viewed from the center C of the plurality of core mounts 21 arranged in an annular shape, by providing the core mount 21 outside the intersection P, the lying core mount 21 is inside the circle drawn by the plurality of core mounts 21. Will stand up with its intersection P as the center of rotation. For this reason, in the apparatus 20 according to the present invention, the connecting wire 16a on the inner side of the divided core piece 11 mounted on the core mount 21 is arranged in the vicinity of the intersection point P, so that the dividing wire 16a is divided into a plurality of parts. The core piece 11 can be erected. And by standing up the some split core piece 11 centering on the connecting wire 16a, when raising the split core 11, it can prevent that the connecting wire 16a loosens.

  Further, when the plurality of divided core pieces 11 are erected, the circles drawn by the plurality of divided core pieces 11 are reduced, and the side surfaces in the circumferential direction of the plurality of divided core pieces 11 are erected and adjacent to each other. It is preferable to contact each of the divided core pieces 11. That is, as shown in FIG. 5, both ends of the core back portion 11 b extending in the circumferential direction of the divided core piece 11 are respectively raised and brought into contact with both ends of the core back portion 11 b of the adjacent divided core piece 11. Is preferred. This is because the plurality of split core pieces 11 that are erected and arranged annularly in the subsequent process are fixed in a state where they are in contact with each other. This is because the subsequent processes can be facilitated by keeping the divided core pieces 11 in contact with each other.

  In the device 20, the upright core mount 21 comes up to the center axis C of the obtained stator 10 because the upright point P is the center of rotation of the intersection P inside the circle drawn by the plurality of core mounts 21. The circle drawn by the plurality of divided core pieces 11 mounted can be reduced. Therefore, if the apparatus 20 of the present invention is used, the divided core pieces 11 are reduced by reducing the circle drawn by the plurality of divided core pieces 11, and the side surfaces in the circumferential direction of the plurality of raised divided core pieces 11 are erected and adjacent to each other. 11 can be brought into contact with each other.

  As described above, in the stator assembling method and the assembling apparatus according to the present invention, the jumper wires 16a are arranged inside the plurality of annularly arranged split core pieces 11, and the split core pieces are centered on the jumper wires 16a. When the wire is erected and brought into contact with the adjacent divided core pieces 11, the connecting wire 16 a maintains the shape formed at the time of arrangement without being loosened. For this reason, the necessary length of the connecting wire 16a can be shortened as compared with the conventional case in which a margin is required for the length of the connecting wire in consideration of slackening. And by making the length of the connecting wire 16a shorter than before, the space factor of the connecting wire 16a routed at the coil end of the obtained stator 10 is increased, and the end coil portion including the connecting wire 16a is provided. It can be sufficiently downsized. Further, the total length of the wire for manufacturing the coil 16 is also reduced, the copper loss in the coil 16 is reduced, and the efficiency of the rotating electrical machine using the obtained stator 10 is improved, and the outer shape of the rotating electrical machine is reduced in size. It is also possible to make it.

  Further, when the plurality of split core pieces are erected around the crossover line 16a, as shown in FIG. 5, the crossover line 16a is not slackened, and the plurality of erected split cores are maintained in the shape formed at the time of arrangement. It will be routed along the coil end of the piece 11. For this reason, by forming the connecting wire 16a in a predetermined shape in advance before raising the divided core piece 11, the complicated forming operation of the connecting wire 16a after raising the divided core piece 11 becomes unnecessary. In addition, the attention paid to the subsequent routing work is reduced as compared with the conventional method in which the connecting wire is formed at the coil end portion. As a result, it is possible to improve the efficiency of the routing work of the crossover wire 16a as compared with the prior art, lower the cost of the stator, and sufficiently increase the reliability of the stator obtained by diminishing the risk of damaging the coil 16. be able to.

  Furthermore, in the assembly apparatus 20 of the present invention, the plurality of divided core pieces 11 that are erected and arranged in an annular shape can be accommodated in the holding cylinder 38 and supplied to the next process. The holding cylinder 38 is accommodated in a cover position where the movable base 52 is moved in the Y-axis direction to stand up and cover the plurality of divided core pieces 11 arranged in an annular shape from above, as shown in FIG. The rod 57a in the cylinder 57 is projected to lower the elevating plate 53. Then, the servo motor 43 is driven to raise the cylindrical member 42, and as shown in FIG. 10, the divided core piece 11 is pushed up to disengage the divided core piece 11 from the core mount 21, and above that A plurality of split core pieces 11 that stand up in such a manner and are arranged in an annular shape are inserted into the holding cylinder 38 provided in the shape of the annular arrangement. In this way, the plurality of split core pieces 11 that are erected and arranged in an annular shape are maintained in this state and can be supplied to the next step.

  In the above-described embodiment, the split core including the core back portion 11b having an arc shape and the teeth 11a protruding from the inner peripheral surface of the core back portion 11b toward the arc center of the inner peripheral surface. Although the case where the divided core piece 11 in the lying state in which the teeth 11a face upward is mounted on the core mount 21 is illustrated using the piece 11, although not shown, the outer peripheral surface of the core back portion that forms an arc shape is not illustrated. A split core piece having teeth protruding outward can also be used. In this case, the teeth face down and are in a lying state, and the divided core piece in the lying state is mounted on the core mount.

  In the above-described embodiment, the case where the twelve core mounts 21 are provided radially via the twelve parallel link mechanisms 23 is exemplified. However, the number of the parallel link mechanisms 23 and the core mounts 21 is to be obtained. Since it differs depending on the specifications of the stator 10, it is not limited to this number, and the number increases or decreases in correspondence with the number of teeth 11a.

  In the above-described embodiment, the core mount 21 made of a permanent magnet has been exemplified. However, the core mount 21 can mount the split core piece 11 in a lying state and can stand the split core in the mounted state. If there is, there is no need to make it with a magnet. For example, a hook that locks all or part of the periphery of the split core piece 11 is provided, and when the stand is raised, the mounting state of the split core piece 11 mounted by the hook is maintained, and together with the split core piece 11 The core mount 21 that stands up may be used.

Further, in the above-described embodiment, the case where the teeth 11a are mounted on the core mount 21 with the split core pieces 11 in the lying state in which the teeth 11a are directed upward in the vertical direction is exemplified. This means a state where they are not on the same plane, and includes a case where the axial center is inclined with respect to the vertical direction. Therefore, as shown in FIG. It is also possible to mount the split core piece 11 in a recumbent state in which the axis of the tooth 11a is inclined with respect to the vertical direction on the core mount 21 in that state. In this case, when the divided core piece 11 is mounted on the core mount 21, the lead wire 16 b drawn from the coil 16 in the divided core piece 11 can be easily inserted into the concave portion 42 a of the cylindrical member 42. This is advantageous when the lead wire 16b has a relatively long coil 16.

DESCRIPTION OF SYMBOLS 10 Stator 11 Divided core piece 11a Teeth 11b Core back part 16 Coil 16a Crossover 20 Stator assembly apparatus 21 Core mount 22 Operation mechanism 23 Parallel link mechanism

Claims (3)

A plurality of split core pieces (11) each including a tooth (11a), a core back portion (11b), and a coil (16) wound around the tooth (11a) and continuing through a crossover (16a) In the method of assembling the stator in which the back portion (11b) draws a circle and the teeth (11a) are arranged annularly so as to form a radial shape,
The plurality of divided core pieces (11) are arranged in an annular shape with the teeth (11a) lying on the upper side or the lower side, and the crossover wires are arranged inside the plurality of divided core pieces (11) arranged in an annular shape. An annular arrangement step of arranging (16a) ;
An assembly step of assembling the stator , wherein the teeth (11a) are erected so that the teeth (11a) form a radial shape around the connecting wire (16a). Method. A plurality of split core pieces (11) each including a tooth (11a), a core back portion (11b), and a coil (16) wound around the tooth (11a) and continuing through a crossover (16a) An assembly device for a stator, wherein the back portion (11b) draws a circle and the teeth (11a) are arranged annularly so as to form a radial shape,
A plurality of cores configured to be able to mount the plurality of divided core pieces (11) in a recumbent state in which the teeth (11a) face upward or downward with the connecting wire (16a) facing inward in a ring shape in a recumbent state Mount (21),
The teeth (11a) of the plurality of divided core pieces (11) by simultaneously raising the plurality of core mounts (21) around the connecting wire (16a ) together with the plurality of divided core pieces (11) mounted. And a stator assembling device comprising an operation mechanism (22) for radializing the rotor. The stator assembling apparatus according to claim 2 , wherein the operating mechanism (22) includes a plurality of parallel link mechanisms (23) provided for each core mount (21) and capable of raising the core mount (21) lying on its side.

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