JP5225161B2 - Rotating electric machine laminated iron core and rotating electric machine armature - Google Patents

Description

  The present invention relates to a laminated core of a rotating electrical machine and an armature of the rotating electrical machine.

  Conventionally, as a laminated iron core of a rotating electrical machine, for example, there is the following (for example, see Patent Document 1). That is, Patent Document 1 discloses a laminated core of a rotating electrical machine that is formed by spirally winding and laminating strip-shaped core pieces formed by punching from a metal plate. In this laminated iron core, a salient pole projecting radially inward is formed on a cylindrical yoke, and the salient pole is an umbrella shape extending in the width direction of the salient pole (circumferential direction of the laminated core) on the tip side. Has a part.

JP 2006-166498 A (FIGS. 15 and 12)

  However, as in the example described in Patent Document 1, when the umbrella-shaped portion is previously extended in the width direction of the salient pole (the circumferential direction of the laminated core), a strip-shaped core piece is punched from the metal plate. When it does, there exists a problem that it becomes easy to produce a waste in a metal plate.

  In addition, a laminated core of this type of rotating electrical machine is required to be easy to manufacture and to have a small loss of magnetic properties.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a laminated core of a rotating electrical machine that can suppress the waste of a plate-shaped material when a strip-shaped core material is punched from a plate-shaped material. There is to do.

  Another object of the present invention is to provide a laminated core of a rotating electrical machine that is easy to manufacture and has little loss of magnetic properties.

  In order to solve the above-mentioned problem, the laminated iron core of the rotating electric machine according to claim 1 is formed by spirally winding and laminating a belt-shaped iron core material formed by punching from a plate-like material. A core body portion extending in a radial direction of the core layer, an iron core annular portion connected to a base end side of the teeth body portion, and a distal end side of the teeth body portion. Each has a tooth tip portion that is rotatably connected to both sides in the width direction via a rotating portion and extends in the width direction of the tooth main body portion, and is arranged side by side in the circumferential direction of the laminated core. A plurality of iron core constituent pieces and a plurality of arm parts that connect the core annular part constituent parts of the core constituent pieces adjacent to each other among the plurality of iron core constituent pieces. Is one circumferential direction of the laminated core And the fitting convex portion of the core annular portion constituting portion that opens toward the other circumferential side of the laminated core and is adjacent to the other circumferential side of the laminated core is loosely fitted. The fitting convex portion and the fitting concave portion are prevented from coming off in the circumferential direction of the laminated core by interposing a retaining material in a gap between the fitting convex portion and the fitting concave portion.

  According to the laminated iron core of the rotating electrical machine according to the first aspect, the tooth front end portion is rotatably connected to both sides in the width direction on the front end side of the tooth main body portion via the rotation portion. Therefore, when the strip-shaped iron core material is punched from the plate material, the teeth tip portion is extended in the longitudinal direction of the teeth body portion (that is, the umbrella-shaped tooth tip portion is closed). Can do.

  Thus, for example, a specific core material and other core material are punched from a plate-shaped material so that the core component pieces in other core material are positioned between the core component pieces in a specific core material. (So-called multi-rows of iron core material can be taken). Therefore, it is possible to suppress the waste of the plate-shaped material when the strip-shaped core material is formed by punching from the plate-shaped material, compared to the case where the so-called multi-row arrangement of the core material is not possible.

  Moreover, according to the laminated iron core of the rotary electric machine according to claim 1, the core annular portion constituent portions in the core constituent pieces adjacent to each other among the plurality of core constituent pieces are connected by the arm portions. Therefore, in the compression process in which the adjacent core ring-shaped component parts are brought into contact with or close to each other, the force required to make the core ring-shaped component parts contact or approach each other is small. Thereby, the laminated iron core of a rotary electric machine can be manufactured easily.

  Furthermore, the core annular part constituent parts adjacent to each other are connected by the arm part, so that the width of the teeth main body part can be freely set. Thereby, a laminated iron core can be made into a shape with little loss of a magnetic characteristic.

  By the way, in the configuration in which the core annular part constituent parts adjacent to each other are connected by the arm part in this way, the motor shaft cannot be firmly fixed to the hole part of the core annular part constituted by the plurality of core annular part constituent parts. Is concerned.

  In this regard, according to the laminated core of the rotating electrical machine according to claim 1, each of the core annular portion constituent portions includes a fitting convex portion protruding toward one side in the circumferential direction of the laminated core, and the circumferential direction of the laminated core. A fitting recess is formed which opens toward the other side and is loosely fitted with a fitting projection of the core annular portion constituent portion adjacent to the other circumferential side of the laminated core. And the fitting convex part and the fitting concave part are prevented from coming off in the circumferential direction of the laminated iron core by having a retaining material interposed in the gap between them. Therefore, since the adjacent core annular part constituent parts are firmly connected to each other, the motor shaft can be firmly fixed to the hole part of the core annular part constituted by the plurality of core annular part constituent parts.

  The laminated core of the rotating electrical machine according to claim 2 is the laminated core of the rotating electrical machine according to claim 1, wherein the retaining material includes a filling resin filled in the gap when the laminated core is insert-molded. It is set as the structure.

  According to the laminated iron core of the rotating electrical machine according to the second aspect, the retaining material is filled resin filled in the gap when the laminated iron core is insert-molded. Accordingly, it is possible to insert a stopper in the gap between the fitting convex portion and the fitting concave portion at the same time as the laminated iron core is insert-molded. Thereby, the increase in a manufacturing man-hour can be prevented.

  The laminated core of the rotating electrical machine according to claim 3 is the laminated core of the rotating electrical machine according to claim 1, wherein the retaining material is formed in a shape that can be inserted into the gap and is inserted into the gap. It is set as the structure.

  According to the laminated iron core of the rotating electrical machine according to the third aspect, the retaining material is a spacer that is formed in advance into a shape that can be inserted into the gap and is inserted into the gap. Therefore, by forming the retaining material in a shape that can be inserted into the gap in advance, the retaining material can be reliably inserted into the gap.

  The laminated core of the rotating electrical machine according to claim 4 is the laminated core of the rotating electrical machine according to any one of claims 1 to 3, wherein the fitting convex portion is more laminated than the fitting concave portion. The core is formed smaller in the radial direction of the iron core, the tip end side is formed larger in the radial direction of the laminated core than the base end side, and the fitting recess has the laminated core in the bottom side rather than the opening side. It is set as the structure greatly formed in the radial direction.

  According to the laminated core of the rotating electrical machine according to claim 4, the fitting convex part is formed smaller in the radial direction of the laminated iron core than the fitting concave part. Therefore, for example, in the compression process in which the core annular part constituent parts in the core constituent pieces adjacent to each other come into contact with each other, or in the laminating process in which the core material is wound in a spiral manner and stacked, the fitting convex part is the fitting concave part. Can be loosely fitted not from the axial direction of the laminated core but from the circumferential direction. Thereby, a laminated iron core can be manufactured further easily.

  In addition, like the armature of the rotating electrical machine according to claim 5, it is preferable that the laminated iron core of the rotating electrical machine according to any one of claims 1 to 4 is provided.

It is a perspective view of the laminated iron core of the rotary electric machine which concerns on one Embodiment of this invention. It is a top view of the laminated iron core of the rotary electric machine which concerns on one Embodiment of this invention. It is a principal part enlarged plan view of the laminated iron core of the rotary electric machine which concerns on one Embodiment of this invention. It is a figure which shows the plate-shaped raw material in one Embodiment of this invention. It is a figure which shows the strip | belt-shaped iron core raw material in one Embodiment of this invention. It is a figure which shows a mode (lamination process in a 1st manufacturing method) where the iron core raw material in one Embodiment of this invention is wound around a support | pillar helically and laminated | stacked. It is a schematic explanatory drawing explaining a mode (lamination process in the 1st manufacturing method) where the iron core material in one embodiment of the present invention is spirally wound around a support and laminated. It is a figure explaining a mode (compression process in the 1st manufacturing method) which press-fits the iron core material in one embodiment of the present invention to an inside diameter die, and is made to reduce in diameter. It is a figure explaining signs that the teeth tip part in one embodiment of the present invention is rotated (rotation process in the first manufacturing method). It is a figure explaining a mode (rotation process in the 1st manufacturing method) which rotates the teeth tip part in one embodiment of the present invention with the 1st jig. It is a figure explaining a mode that a tooth tip part in one embodiment of the present invention is rotated by the 2nd jig (rotation process in the 1st manufacturing method). It is a figure explaining a mode that the iron core material in one embodiment of the present invention is formed in the final shape. It is a figure explaining a mode (compression process in the 2nd manufacturing method) where an arm part in one embodiment of the present invention is compression-molded. It is a figure explaining a mode (compression process in the 2nd manufacturing method) where an arm part in one embodiment of the present invention is compression-molded. It is a figure explaining a mode (compression process in the 2nd manufacturing method) where an arm part in one embodiment of the present invention is compression-molded. It is a principal part enlarged plan view which shows the modification of the laminated iron core which concerns on one Embodiment of this invention. It is a principal part enlarged plan view which shows the modification of the laminated iron core which concerns on one Embodiment of this invention.

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

  1A to 1C show a laminated core 10 of a rotating electrical machine according to an embodiment of the present invention. The laminated core 10 shown in these figures is configured by spirally winding and laminating a strip-shaped core material formed by punching from a plate-shaped material, as will be described in detail later. It has the following configuration.

  That is, this laminated iron core 10 constitutes an armature in an outer rotor type rotating electrical machine by an insulator and a winding wound around a tooth main body portion 16 to be described later via this insulator. 1B, it is set as the structure which has several iron core structure piece 12 and several arm part 14. As shown in FIG.

  The plurality of iron core constituting pieces 12 are arranged side by side in the circumferential direction of the laminated iron core 10, and each has a tooth main body portion 16, an iron core annular portion constituting portion 18, and a tooth tip portion 20. .

  The teeth main body portion 16 extends in the radial direction of the laminated core 10, and the core annular portion constituting portion 18 is connected to the base end side (radially inner side) of the teeth body portion 16 to constitute the core annular portion 22. doing. As shown in FIG. 1C, the teeth tip portion 20 is rotatably connected to both sides in the width direction on the tip side (radially outer side) of the teeth body portion 16 via a bridge-like turning portion 24, and The teeth main body 16 extends in the width direction (circumferential direction).

  A protrusion 26 is formed on the tooth tip 20 on the side opposite to the rotation end 20 </ b> A with respect to the rotation unit 24. The protrusion 26 is positioned on the side opposite to the base end side (radially outward) with respect to the distal end side of the teeth body 16 and is on the side opposite to the rotating end 20 </ b> A with respect to the rotating portion 24 (side facing the circumferential direction). It extends.

  Further, the protrusions 26 in each iron core component piece 12 are in contact with each other in a state of facing the width direction (circumferential direction) of the tooth main body 16. Furthermore, the outer peripheral surface 20 </ b> B (rotor facing surface) of the tooth tip 20 including the protrusion 26 is formed in an arc shape along the circumferential direction of the laminated core 10.

  Each arm portion 14 is formed in a bridge shape, and connects the core annular portion constituting portions 18 in the adjacent iron core constituting pieces 12 among the plurality of iron core constituting pieces 12.

  Moreover, as shown in FIG. 1C, a pair of long holes 19 are formed in a pair of adjacent core annular portion constituting portions 18 adjacent to each other so as to straddle them. Furthermore, the contact surface between the pair of long holes 19 among the contact surfaces (circumferential surfaces) of the pair of core annular portion constituting portions 18 is one circumferential direction of the laminated core 10 with respect to the other contact surfaces. It is offset to the side (R1 side).

  As a result, each core annular portion constituting portion 18 has a fitting convex portion 28 protruding toward one circumferential side (R1 side) of the laminated core 10 and the other circumferential side (R2 side) of the laminated core 10. ) And a fitting recess 29 in which the fitting projection 28 of the core annular portion constituting portion 18 adjacent to the other circumferential side of the laminated core 10 is loosely fitted is formed.

  The fitting convex portion 28 is formed smaller than the fitting concave portion 29 in the radial direction (D direction) of the laminated core 10, and loosely fits into the fitting concave portion 29 from the other circumferential side (R2 side) of the laminated core 10. It can be made to. Moreover, the fitting convex part 28 and the fitting recessed part 29 are large in the radial direction (D direction) of the laminated iron core 10 from the circumferential direction other side (R2 side) of the laminated iron core 10 toward one side (R1 side). It is comprised so that it may become. That is, the fitting convex portion 28 is formed such that the distal end side is larger than the proximal end side in the radial direction of the laminated core 10, and the fitting concave portion 29 is smaller in diameter on the bottom side than the opening side. Largely formed in the direction.

  The fitting convex portion 28 and the fitting concave portion 29 are prevented from coming off in the circumferential direction of the laminated core 10 by the retaining material 25 being interposed in the gap between the fitting convex portion 28 and the fitting concave portion 29. As will be described later, the retaining member 25 is filled resin filled in the gap (that is, the pair of long holes 19) between the fitting convex portion 28 and the fitting concave portion 29 when the laminated iron core 10 is insert-molded. ing.

  And the laminated iron core 10 which consists of the said structure is manufactured with the following two types of manufacturing methods, for example.

[First production method]
First, the 1st manufacturing method of the laminated iron core 10 is demonstrated.

  2 to 9 show a first manufacturing method of the laminated core 10. In this first manufacturing method, the punching process, the lamination process, the compression process, the rotation process, and the molding process are performed in this order.

(Punching process)
First, in the punching step, as shown in FIGS. 2 and 3, a strip-shaped iron core material 30 is formed by punching from a metal plate-like material 32. At this time, the strip-shaped core material 30 is provided with a plurality of core-constituting pieces 12 and a plurality of arm portions 14. Moreover, about the some iron core component piece 12, it arrange | positions along with the fixed direction, ie, the direction (arrow X direction) orthogonal to the longitudinal direction of the teeth main-body part 16. As shown in FIG. Furthermore, each iron core component piece 12 has a teeth main body portion 16, an iron core annular portion component 18, a tooth tip 20, a fitting convex portion 28, and a fitting concave portion 29.

  In addition, the tooth tip 20 is rotatably connected to both sides in the width direction on the tip side of the tooth main body 16 via a turning part 24. At this time, with respect to the tooth distal end portion 20, the rotation end 20 </ b> A is positioned on the proximal end side of the tooth main body portion 16 with respect to the rotation portion 24, and the longitudinal direction of the teeth main body portion 16 (arrow Y) Direction). Further, with respect to the tooth distal end portion 20, a protruding portion 26 is formed on the opposite side of the rotating portion 20 from the rotating end 20 </ b> A. Further, the protrusion 26 is positioned on the side opposite to the base end side with respect to the distal end side of the teeth main body 16 and extends on the side opposite to the rotation end 20 </ b> A with respect to the rotation portion 24.

  Further, in this punching step, as shown in FIG. 2, the iron core component pieces 12 in the other iron core materials 30 are positioned between the iron core component pieces 12 in the specific iron core material 30. The iron core material 30 and other iron core materials 30 are formed by punching from the plate material 32.

  At this time, the tooth tip 20 is formed by punching or half-pushing back so that the outer peripheral surface 20B (rotor facing surface) is arcuate along the circumferential direction of the laminated core 10. . In addition, the slit portion 34 is formed in advance using a cutting process, and is flattened after these steps to correct distortion in the peripheral portion of the slit portion 34. Moreover, the plate-shaped raw material 32 is divided | segmented beforehand for every predetermined length as needed.

(Lamination process)
Then, the core material 30 (see FIG. 3) obtained by the punching process is provided with a column 36 larger than the hole diameter of the core annular portion 22 of the laminated core 10 as a finished product, as shown in FIGS. The shaft is spirally wound and laminated. And this iron core raw material 30 is divided | segmented by required length.

(Compression process)
Subsequently, as shown in FIG. 6, the support column 36 (see FIGS. 4 and 5) is removed from the core material 30 obtained by the lamination process, and the core material 30 is press-fitted into the inner diameter drawing die 38. Then, a force is applied to the core material 30 in the radial direction to compress and bend the arm portion 14 to reduce the diameter of the core material 30. The core annular portion constituting portions 18 are brought into contact with each other.

  At this time, the fitting convex portions 28 are loosely fitted into the fitting concave portions 29 from the circumferential direction of the laminated core 10 in the adjacent core annular portion constituting portions 18.

(Rotation process)
And the teeth front-end | tip part 20 in the iron core raw material 30 obtained by the compression process is rotated centering | focusing on the rotation part 24 so that it may extend in the width direction of the teeth main-body part 16, as FIG. 7 shows. . At this time, the tooth distal end portion 20 is rotated about the rotation portion 24 so that the rotation end 20A is moved from the proximal end side of the tooth main body portion 16 to the distal end side (from the radially inner side to the outer side).

  At this time, as shown in FIG. 8A, the first jig 40 is used when the tooth tip 20 starts to open, and as shown in FIG. 8B, the first tip 20 ends when the tooth tip 20 ends. Two jigs 42 are used.

  The 1st jig | tool 40 and the 2nd jig | tool 42 are each provided with the rollers 48 and 50 as a press part which can move the inside of the groove parts 44 and 46, respectively. The rollers 48 and 50 are respectively urged to the opening side of the groove portions 44 and 46 (inside in the radial direction of the iron core material 30) by a spring or the like (not shown), and as the first jig 40 and the second jig 42 move. As the tooth main body portion 16 is moved from the proximal end side to the distal end side (from the radially inner side to the outer side), the outer peripheral surface 20B of the tooth distal end portion 20 is pressed while the tooth distal end portion 20 is rotated from the rotating end 20A side to the proximal end side. It is set as the structure rolled to the (projection part 26 side). At this time, the tooth tip 20 may be rotated with a single jig.

  Then, with the tooth tip 20 rotated (expanded) to the extent shown in FIG. 8B, the iron core material 30 is inserted into the die 52 as shown in FIG. The part 20 is rotated to the final shape. At this time, the protruding portions 26 of the iron core component pieces 12 are brought into contact with each other in a state where the protruding portions 26 face each other in the width direction of the tooth main body portion 16. Note that the joints between the protrusions 26 in each iron core component piece 12 may be welded at appropriate stages.

  Subsequently, the cores 56 and 58 (punch) are inserted into the gap between the teeth main body 16 and the hole of the core annular portion 22, and the core material 30 is compressed radially inward by the jig 54. By the above procedure, the laminated core 10 is formed from the core material 30.

(Molding process)
Then, insert molding is performed to form an insulator on the surface of the laminated core 10 formed as described above. At this time, the resin flows into the gap (that is, the pair of long holes 19) between the fitting convex portion 28 and the fitting concave portion 29 shown in FIG. 1C. As a result, the gap between the fitting convex portion 28 and the fitting concave portion 29 is filled with the resin, and the retaining material 25 is interposed.

[Second production method]
Next, the 2nd manufacturing method of the laminated iron core 10 is demonstrated.

  In this second manufacturing method, the punching process, compression process, lamination process, removal process, rotation process, and molding process are performed in this order.

(Punching process)
First, in the punching step, the strip-shaped core material 30 is punched from the metal plate-like material 32 and formed in the same manner as the punching step (see FIGS. 2 and 3) in the first manufacturing method described above.

(Compression process)
Subsequently, in the compression process, the arm portion 14 of the iron core material 30 obtained by the punching process described above is compression molded.

  Here, FIG. 10A to FIG. 10C show a state in which the arm portion 14 of the iron core material 30 is compression-molded in this compression step.

  In this compression step, a compression molding machine 70 is used. The compression molding machine 70 has a first movable part 72, a second movable part 74, a third movable part 76, and a fourth movable part 78. The first movable portion 72, the second movable portion 74, the third movable portion 76, and the fourth movable portion 78 are composed of a first groove portion 82, a second groove portion 84, a third groove portion 86, and a fourth groove portion. Each of the groove portions 88 is movably supported, and is configured to be moved in the feed direction (X direction) by a moving mechanism (not shown).

  First, as shown in FIG. 10A, the core component piece 12A located on the leading end side in the feed direction and the core component piece 12B located on the rear end side in the feed direction are positioned.

  That is, with respect to the core component piece 12A located on the front end side in the feed direction, the first movable portion 72 is brought into contact with the teeth main body portion 16 from the front end side in the feed direction with respect to the tooth main body portion 16, and the second movable portion 74 is moved to the core annular portion. It is made to contact | abut to the core annular part structure part 18 from the feed direction front end side with respect to the structure part 18.

  Further, with respect to the core component piece 12B located on the rear end side in the feed direction, the third movable portion 76 is brought into contact with the teeth main body portion 16 from the rear end side in the feed direction with respect to the teeth main body portion 16, and the fourth movable portion 78 is moved. The core annular portion constituting portion 18 is brought into contact with the core annular portion constituting portion 18 from the rear end side in the feed direction with respect to the core annular portion constituting portion 18.

  Then, as shown in FIG. 10B, the third movable portion 76 and the fourth movable portion 78 are moved to the leading end side in the feed direction (X1 side) while the first movable portion 72 and the second movable portion 74 are stopped. ), And the arm portion 14 that couples the pair of iron core components 12A and 12B is compression-molded.

  As described above, in the compression process, the arm portion 14 of the core material 30 is compression-molded so that the adjacent core component pieces 12A and 12B are close to each other.

  Subsequently, as shown in FIG. 10C, the first movable portion 72, the second movable portion 74, the third movable portion 76, and the fourth movable portion 78 are simultaneously moved to the leading end side (X1 side) in the feed direction. Then, the pair of iron core constituent pieces 12A and 12B are sent out (the entire core material 30 is moved to the front end side in the feed direction).

  Then, all the arm portions 14 of the core material 30 are compression-molded by repeatedly performing the operations of FIGS. 10A to 10C in the manner described above.

  In this compression step, it is preferable to dispose restriction plates on both sides in the thickness direction of the core material 30 because the core component pieces 12A and 12B can be prevented from being lifted or warped when the arm portion 14 is compression-molded. It is. In this case, a gap about the thickness of the core material 30 may be provided between the regulation plate and the core material 30 so as not to hinder the feeding of the core material 30. Moreover, you may provide a relief hole in the site | part in which the arm part 14 is located in a control board so that a control board may not inhibit the deformation | transformation to the plate | board thickness direction of the iron core raw material 30 at the time of the compression molding of the arm part 14. FIG.

(Lamination process)
Subsequently, using the same struts as the struts 36 used in the laminating step in the first manufacturing method described above, the core material 30 obtained by the above-described compression step is spirally wound around the struts and stacked. (See FIG. 5). At this time, the fitting convex portions 28 are loosely fitted into the fitting concave portions 29 from the circumferential direction of the laminated core 10 in the adjacent core annular portion constituting portions 18.

(Removal process)
And a support | pillar is removed from the iron core raw material 30 obtained by the lamination process.

(Rotation process)
Subsequently, after the removing step, the tooth tip portion 20 in the iron core material 30 extends in the width direction of the tooth main body portion 16 in the same manner as the turning step (FIGS. 7 to 9) in the first manufacturing method described above. As described above, the rotation unit 24 is rotated. By the above procedure, the laminated core 10 is formed from the core material 30.

(Molding process)
Then, insert molding is performed to form an insulator on the surface of the laminated core 10 formed as described above, similarly to the molding step in the first manufacturing method described above. At this time, the resin flows into the gap (that is, the pair of long holes 19) between the fitting convex portion 28 and the fitting concave portion 29 shown in FIG. 1C. As a result, the gap between the fitting convex portion 28 and the fitting concave portion 29 is filled with the resin, and the retaining material 25 is interposed.

  Next, the operation and effect of the above-described embodiment of the present invention will be described.

  According to the laminated core 10 which concerns on one Embodiment of this invention, as FIG. 1C shows, the teeth front-end | tip part 20 rotates via the rotation part 24 on the width direction both sides in the front end side of the teeth main-body part 16. As shown in FIG. Connected as possible. Therefore, as shown in FIG. 2, when the strip-shaped iron core material 30 is punched from the plate-shaped material 32 and formed, the teeth tip portion 20 extends in the longitudinal direction of the tooth body portion 16 (that is, an umbrella shape). The teeth tip portion 20 of the present invention can be closed).

  Thereby, for example, the specific core material 30 and the other core material 30 are plated so that the core component pieces 12 in the other core material 30 are positioned between the core component pieces 12 in the specific core material 30. It can be formed by punching from the shaped material 32 (so-called multi-row arrangement of the core material 30 can be performed). Therefore, it is possible to suppress the waste of the plate-shaped material 32 when the strip-shaped core material 30 is formed by punching from the plate-shaped material 32 as compared with the case where the so-called multi-row arrangement of the core materials 30 is not possible.

  Moreover, according to the laminated core 10 which concerns on one Embodiment of this invention, as FIG. 1C shows, the mutually adjacent core cyclic | annular part structure parts 18 are connected by the arm part 14. As shown in FIG. Therefore, for example, in the above-described compression step in which the core annular portion constituent portions 18 adjacent to each other are brought into contact with or close to each other, the force required to make the core annular portion constituent portions 18 contact or approach each other is small. Thereby, the laminated core 10 can be easily manufactured.

  Moreover, according to the laminated core 10 which concerns on one Embodiment of this invention, the teeth front-end | tip part 20 is located in the base end side of the teeth main-body part 16 with respect to the rotation part 24 in the iron core raw material 30 with 20 A of rotation ends. After the formation, the rotation end 20 </ b> A is rotated around the rotation portion 24 so that the rotation end 20 </ b> A is moved from the proximal end side to the distal end side of the tooth main body portion 16.

  Therefore, since it is not necessary to form a V-shaped groove or a U-shaped groove at the tip of the tooth body portion 16 in order to form the tooth tip portion 20, the laminated core 10 can be manufactured more easily, and the tooth tip portion 20 Since the dents can be prevented, the generation of magnetic sound during the operation of the rotating electrical machine can be suppressed.

  Furthermore, according to the laminated iron core 10 which concerns on one Embodiment of this invention, in each iron core component piece 12, since the protrusion parts 26 are mutually contact | abutted in the state facing the width direction of the teeth main-body part 16, it is. Further, it is possible to prevent the depression between the teeth tip portions 20 and to further smooth the outer peripheral surface 20B (rotor facing surface) of the teeth tip portions 20.

  Moreover, according to the laminated iron core 10 which concerns on one Embodiment of this invention, the setting of the width | variety of the teeth main-body part 16 can be performed freely by connecting mutually adjacent iron core annular part structure parts 18 with the arm part 14. FIG. Thus, the laminated core 10 can be formed into a shape with little loss of magnetic properties.

  By the way, in the configuration in which the core annular portion constituent portions 18 adjacent to each other are connected by the arm portion 14 in this way, the motor shaft is placed in the hole 23 of the core annular portion 22 constituted by the plurality of core annular portion constituent portions 18. There is concern that it cannot be firmly fixed.

  In this regard, according to the laminated core 10 according to one embodiment of the present invention, each of the core annular portion constituting portions 18 has a fitting convex portion 28 that protrudes toward one side (R1 side) in the circumferential direction of the laminated core 10. And the fitting convex portion 28 of the core annular portion constituting portion 18 that opens toward the other circumferential side (R2 side) of the laminated core 10 and is adjacent to the other circumferential side of the laminated core 10 is loosely fitted. A recess 29 is formed.

  The fitting convex portion 28 and the fitting concave portion 29 are prevented from coming off in the circumferential direction of the laminated core 10 by the retaining material 25 being interposed in the gap between the fitting convex portion 28 and the fitting concave portion 29. Accordingly, since the adjacent core annular portion constituting portions 18 are firmly connected to each other, the motor shaft is firmly fixed to the hole portion 23 of the core annular portion 22 constituted by the plurality of core annular portion constituting portions 18. Can do.

  Moreover, according to the laminated core 10 which concerns on one Embodiment of this invention, when the lamination | stacking core 10 insert-molds the lamination | stacking core 10, the clearance gap (namely, a pair of fitting concave part 29) is formed. The long hole 19) is filled resin. Accordingly, it is possible to insert the stopper 25 into the gap between the fitting convex portion 28 and the fitting concave portion 29 at the same time as the insert molding of the laminated core 10. Thereby, the increase in a manufacturing man-hour can be prevented.

  Moreover, according to the laminated iron core 10 which concerns on one Embodiment of this invention, the fitting convex part 28 is formed smaller in the radial direction (D direction) of the laminated iron core 10 than the fitting recessed part 29. FIG. Therefore, for example, in the compression step in the first manufacturing method described above or the lamination step in the second manufacturing method described above, the fitting convex portion 28 is not inserted into the fitting concave portion 29 from the axial direction of the laminated core 10. It can be loosely fitted from the circumferential direction. Thereby, the laminated core 10 can be manufactured more easily.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited above, Of course, it can change and implement variously within the range which does not deviate from the main point. .

  For example, in the above-described embodiment, the fitting convex portion 28 and the fitting concave portion 29 are configured by forming a pair of long holes 19 so as to straddle a pair of adjacent iron core annular portion constituting portions 18. However, it may be configured as follows.

  That is, as shown in FIG. 11, the fitting convex portion 28 and the fitting concave portion 29 are formed with a C-shaped hole 39 so as to straddle the pair of adjacent core annular portion constituting portions 18. May be configured. In addition, as shown in FIG. 12, the fitting convex portion 28 and the fitting concave portion 29 are formed with a pair of adjacent iron core annular portion constituting a flange portion 49 so as to straddle them. It may be constituted by.

  Further, in the above embodiment, the retaining material 25 is filled resin, but the spacer is formed in advance in a shape that can be inserted into the gap between the fitting convex portion 28 and the fitting concave portion 29 and is inserted into the gap. It may be said. If comprised in this way, this retaining material 25 can be reliably inserted in a clearance gap by forming in advance the retaining material 25 in the shape which can be inserted in a clearance gap.

  Moreover, in the said embodiment, the core cyclic | annular part structure part 18 is formed in the radial direction inner side of the teeth main-body part 16, and the teeth front-end | tip part 20 is formed in the radial direction outer side of the teeth main-body part 16, Thereby, the lamination | stacking iron core 10 is outer. The armature of the rotor-type rotating electrical machine is configured, but the core annular portion constituting portion 18 is formed on the radially outer side of the teeth main body portion 16, and the tooth tip portion 20 is formed on the radially inner side of the teeth main body portion 16. Thus, the laminated core 10 may constitute an armature in an inner rotor type rotating electrical machine.

DESCRIPTION OF SYMBOLS 10 ... Laminated iron core, 12 ... Iron core component piece, 14 ... Arm part, 16 ... Teeth main-body part, 18 ... Iron core annular part component part, 20 ... Teeth tip part, 20A ... Turning end, 20B ... Outer peripheral surface, 22 ... Iron core Annular part, 24: Rotating part, 25 ... Stopping material, 26 ... Projection part, 28 ... Fitting convex part, 29 ... Fitting concave part, 30 ... Iron core material, 32 ... Plate material, 34 ... Slit part, 36 ... Post, 38 ... Inner diameter drawing die, 40 ... First jig, 42 ... Second jig, 44,46 ... Groove part, 48,50 ... Roller, 52 ... Die, 54 ... Jig, 56 , 58 ... mandrel, 60 ... slit

Claims (5)

A laminated iron core of a rotating electric machine configured by spirally winding and laminating a strip-shaped iron core material formed by punching from a plate material,
Teeth body portion extending in the radial direction of the laminated core, an iron core annular portion connected to the base end side of the teeth body portion, and rotating portions on both sides in the width direction on the distal end side of the teeth body portion A plurality of core component pieces arranged in a circumferential direction of the laminated iron core, each having a tooth tip portion that is rotatably connected through the teeth body portion and extends in the width direction of the teeth body portion;
A plurality of arm portions for connecting the core annular portion constituting portions in the iron core constituting pieces adjacent to each other among the plurality of iron core constituting pieces;
With
In each core annular part component,
A fitting projection that protrudes toward one side in the circumferential direction of the laminated core;
An opening is formed toward the other side in the circumferential direction of the laminated core, and a fitting recess in which the fitting convex portion of the core annular portion constituting portion adjacent to the other side in the circumferential direction of the laminated core is loosely fitted is formed.
The fitting convex portion and the fitting concave portion are prevented from coming off in the circumferential direction of the laminated iron core by having a retaining material interposed in the gap between each other.
A laminated iron core for rotating electrical machines. The retaining material is a filled resin filled in the gap when the laminated iron core is insert-molded.
The laminated iron core of the rotary electric machine according to claim 1. The retaining material is a spacer that is formed in advance into a shape that can be inserted into the gap and is inserted into the gap.
The laminated iron core of the rotary electric machine according to claim 1. The fitting convex portion is formed smaller in the radial direction of the laminated core than the fitting concave portion, and the distal end side is formed larger in the radial direction of the laminated core than the base end side,
The fitting recess is formed such that the bottom side is larger than the opening side in the radial direction of the laminated core.
The laminated iron core of the rotary electric machine as described in any one of Claims 1-3. A laminated core of the rotating electrical machine according to any one of claims 1 to 4,
A winding wound around the teeth body through an insulator;
Armature of a rotating electric machine with