JP2015061352A - Laminated core of dynamo-electric machine, dynamo-electric machine and method of manufacturing laminated core of dynamo-electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the laminated core of a dynamo-electric machine in which falling off of burrs occurring at a fitting part can be suppressed, and to provide a dynamo-electric machine and a method of manufacturing the laminated core of a dynamo-electric machine.SOLUTION: A motor core 10 includes teeth 12 configured by laminating teeth configuration pieces 16, extending in the radial direction of a dynamo-electric machine and provided with a fitting protrusion 22 at the end of the dynamo-electric machine on the radial inside, in the axial direction of the dynamo-electric machine, and a core annular portion configuration part 14 configured by laminating core annular portion configuration pieces 30, having a fitting recess 38 in which the fitting protrusion 22 is fitted in the outer peripheral part, in the axial direction of the dynamo-electric machine. Furthermore, the motor core 10 includes a lid 76 covering the fitting protrusion 22 of the teeth configuration piece 16 and the fitting recess 38 of the core annular portion configuration piece 30 arranged at the axial end of the dynamo-electric machine, from the axial end side of the dynamo-electric machine.

Description

  The present invention relates to a laminated core of a rotating electrical machine, a rotating electrical machine, and a method for manufacturing the laminated core of the rotating electrical machine.

  Patent Document 1 below discloses a laminated core (core) of a rotating electrical machine that is configured by arranging a plurality of divided cores (laminated teeth) in a ring shape and coupling the plurality of divided cores in the circumferential direction. . The manufacturing method of the laminated core of the rotating electrical machine will be briefly described. First, a divided core component piece (divided core sheet) is formed by punching from a plate-shaped material. Moreover, the base end side of this division | segmentation core structural piece is made into the connection part (butt | matching part) connected with the other adjacent division | segmentation core structural piece, and the recessed part and the convex part are provided in this connection part. . Next, the above-described split core is configured by stacking the split core constituent pieces in the axial direction of the rotating electrical machine. Then, a plurality of divided cores are arranged in an annular shape, and the convex portions of the divided core constituent pieces constituting the divided core are press-fitted into the concave portions of the divided core constituent pieces constituting the adjacent divided cores. As a result, the plurality of divided cores are arranged in a ring shape, and the plurality of divided cores are coupled in the circumferential direction to form a laminated core of the rotating electrical machine.

JP 60-170431 A

  However, in the laminated core of the rotating electrical machine described in Patent Document 1, since the above-mentioned convex portion is press-fitted into the concave portion, it is considered that burrs are generated in the press-fit portion. If such burrs fall off during the operation of the rotating electrical machine, it is conceivable that the dropped burrs come into contact with the rotor and generate abnormal noise.

  In view of the above facts, an object of the present invention is to obtain a laminated core of a rotating electrical machine, a rotating electrical machine, and a manufacturing method of the laminated core of the rotating electrical machine that can prevent the burr generated at the fitting portion from falling off. .

  The laminated iron core of the rotating electrical machine according to claim 1 is configured such that a tooth constituent piece extending in a radial direction of the rotating electrical machine and having a fitting convex portion provided at an end portion on the radially inner side of the rotating electrical machine is a shaft of the rotating electrical machine. By laminating in the axial direction of the rotating electrical machine, a tooth portion constituted by being laminated in the direction and an iron core annular portion constituting piece having a fitting concave portion into which the fitting convex portion is fitted in the outer peripheral portion. The core annular portion constituting portion configured, the fitting convex portion of the teeth constituent piece arranged at the axial end of the rotating electric machine, and the fitting concave portion of the core annular portion constituting piece are connected to the shaft of the rotating electric machine. And a cover portion covering from the end side in the direction.

  According to the laminated iron core of the rotating electrical machine according to claim 1, the fitting convex part of the tooth constituent piece and the fitting concave part of the core annular part constituent piece arranged at the axial end of the rotary electric machine are covered by the lid part. Therefore, it is possible to suppress burrs generated when the respective fitting convex portions and the fitting concave portions are fitted to fall outside the laminated core of the rotating electrical machine. In other words, the burr can be confined in the laminated core of the rotating electrical machine.

  The laminated iron core of the rotating electrical machine according to claim 2 is the laminated iron core of the rotating electrical machine according to claim 1, wherein the rotating electrical machine is disposed on a radially outer portion of the rotating electrical machine of the fitting convex portion of the tooth constituent piece. A pair of contact surfaces whose surfaces are directed in the circumferential direction are provided, and the iron core annular portion constituting piece has a surface directed in the circumferential direction of the rotating electrical machine and the pair of contact surfaces. A pair of abutted surfaces to be abutted is provided, and the lid covers the boundary between the abutting surface and the abutted surface from the axial end side of the rotating electrical machine.

  According to the laminated iron core of the rotating electric machine according to claim 2, the contact surface of each of the laminated teeth constituting pieces comes into contact with the abutted surface of each laminated iron core annular component piece, thereby The inclination of the tooth part with respect to the part component part is regulated. In addition, when flowing magnetic flux from the tooth part to the core annular part constituent part, or when flowing magnetic flux from the core annular part constituent part to the tooth part, in addition to the fitting part of the fitting convex part and the fitting concave part, Magnetic flux can flow through the boundary between the contact surface and the contacted surface. That is, the magnetic flux can be prevented from decreasing at the boundary between the tooth portion and the core annular portion constituent portion, and the inclination of the tooth portion with respect to the core annular portion constituent portion can be suppressed. In addition to this, according to this configuration, the contact surface of the tooth constituent piece arranged at the axial end of the rotating electrical machine and the contacted portion of the core annular part constituent piece arranged at the axial end of the rotating electric machine Since the boundary with the surface is covered by the lid portion, it is possible to suppress the burr generated at the boundary between the contact surface and the contacted surface from dropping out of the laminated core of the rotating electrical machine.

  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 or 2, wherein the fitting of the tooth constituent pieces arranged at one end in the axial direction of the rotating electrical machine is performed. The fitting concave part of the convex part and the core annular part constituting piece is covered with the lid part, and the fitting convex part of the tooth constituent piece arranged at the other end in the axial direction of the rotating electrical machine and the The fitting recess of the core annular part constituting piece is covered with the lid part.

  According to the laminated iron core of the rotating electrical machine according to claim 3, the fitting convex portions of the tooth constituent pieces and the fitting concave portions of the core annular portion constituent pieces arranged at both axial ends of the rotary electric machine are covered by the lid portion. Therefore, it is possible to further suppress the burrs generated when the respective fitting convex portions and the fitting concave portions are fitted to fall outside the laminated core of the rotating electrical machine.

  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 core annular portion constituting portion is a predetermined number of the core annular portions. An intermediate region component in which component pieces are laminated in the axial direction of the rotating electrical machine and the laminated core annular part component pieces are integrated, and a predetermined number of the core annular part component pieces are in the axial direction of the rotating electrical machine. And an end region constituent part integrated with the core annular part constituent piece laminated to each other, and the lid portion is formed on an end surface in the axial direction of the end region constituent part. Installed.

  According to the laminated iron core of the rotating electrical machine according to the fourth aspect, the core annular portion constituting portion is divided by the intermediate region constituting portion and the end region constituting portion. Therefore, it is possible to fit the fitting concave portion of the core annular portion constituting piece and the fitting convex portion of the tooth constituting piece by dividing the number according to the number of divisions. Thereby, the peak value of the processing force at the time of integrating a teeth part and an iron core annular part composition part can be reduced.

  The laminated core of the rotating electrical machine according to claim 5 is the laminated core of the rotating electrical machine according to claim 4, wherein the fitting concave portion and the fitting convex portion of the core annular portion constituting piece constituting the intermediate region constituting portion are provided. Is loosely fitted, and the fitting concave portion and the fitting convex portion of the core annular portion constituting piece constituting the end region constituting portion are press-fitted and fitted.

  According to the laminated iron core of the rotating electric machine according to claim 5, the fitting concave portion of each core annular portion constituting piece constituting the intermediate region constituting portion and the fitting convex portion of each tooth constituting piece constituting the tooth portion are provided. Since the structure is loosely fitted, the amount of work when integrating the teeth portion and the core annular portion constituting portion can be reduced, that is, the processing energy can be reduced.

  The laminated iron core of the rotating electric machine according to claim 6 is the laminated iron core of the rotating electric machine according to any one of claims 1 to 5, wherein the dimension of the core annular portion constituting portion in the axial direction of the rotating electric machine is provided. Is set smaller than the dimension of the tooth portion in the axial direction of the rotating electrical machine.

  According to the laminated iron core of the rotating electrical machine according to claim 6, since the dimensions of the core annular portion constituting portion and the tooth portion in the axial direction of the rotating electrical machine are set as described above, It can be made to contact reliably by a part. Thereby, it can suppress that the burr | flash produced between the fitting convex part and the fitting recessed part falls out between between a cover part and a fitting convex part.

  A rotating electric machine according to claim 7 is a fixed electric machine including the laminated core of the rotating electric machine according to any one of claims 1 to 6 and a winding wound around the teeth portion. And a rotor having a magnet disposed so as to be opposed to the laminated iron core of the rotating electric machine and provided so as to be integrally rotatable with the rotating shaft.

  The rotating electrical machine according to claim 8 includes a laminated core of the rotating electrical machine according to any one of claims 1 to 6, a winding wound around the teeth portion, and a terminal portion of the winding. A fixed rotor having a commutator connected thereto, a laminated core of the rotating electrical machine and a rotating shaft to which the commutator is fixed, and a magnet having a magnet disposed to face the laminated core of the rotating electrical machine And a child.

  According to the rotary electric machine according to claim 7 and claim 8, it is possible to suppress burrs generated at the time of manufacturing the laminated iron core of the rotary electric machine from dropping out of the laminated iron core of the rotary electric machine. Thereby, generation | occurrence | production of the noise etc. by said burr | flash contacting a rotor or a stator can be suppressed.

  The manufacturing method of the laminated core of the rotating electrical machine according to claim 9 is arranged in an annular shape by fitting the teeth projections into the fitting recesses, and a teeth portion arranging step of arranging the teeth portions in an annular shape. The teeth portion and the core annular portion constituting portion are integrated, and the fitting convex portion of the teeth constituting piece and the fitting concave portion of the core annular portion constituting piece arranged at the axial end of the rotating electrical machine are provided. A fitting step of covering the rotating electrical machine from the end in the axial direction with the lid, and passing through the teeth portion arranging step and the fitting step, to any one of claims 1 to 6. The laminated core of the described rotating electrical machine is manufactured.

  According to the manufacturing method of the laminated iron core of the rotating electrical machine according to claim 9, the fitting convex portion of the tooth constituent piece and the fitting of the core annular portion constituent piece arranged at the end in the axial direction of the rotating electric machine in the fitting step. The joint recess is covered by the lid. Thereby, it can suppress that the burr | flash which produced when each fitting convex part and fitting recessed part fitted | fitted out falls to the outer side of the laminated core of a rotary electric machine.

  The manufacturing method of the laminated iron core of the rotary electric machine according to claim 10 includes a teeth portion arranging step of arranging the teeth portions in an annular shape, the fitting recessed portion of the core annular portion constituting piece constituting the intermediate region constituting portion, and the The fitting convex portions are fitted, and then the fitting concave portions and the fitting convex portions of the core annular portion constituting pieces constituting the end region constituting portions are fitted into an annular shape. The teeth portion and the core annular portion constituting portion are integrated, and the fitting convex portion of the teeth constituting piece and the fitting concave portion of the core annular portion constituting piece arranged at the axial end of the rotating electrical machine are provided. 6. A rotating electrical machine stack according to claim 4 or 5, wherein the rotating electrical machine has a fitting step in which the lid is covered from the axial end of the rotating electrical machine, and the teeth portion arranging step and the fitting step are performed. An iron core is manufactured.

  According to the method for manufacturing a laminated core of a rotating electrical machine according to claim 10, since the fitting step is performed using the core annular portion constituting portion having a divided structure, the peak value of the processing force in the fitting step is determined. Can be reduced.

  The method for manufacturing a laminated core of a rotating electrical machine according to claim 11 is characterized in that, in the fitting step according to claim 10, the fitting concave portion and the fitting convexity of the core annular portion constituting piece constituting the intermediate region constituting portion. Then, the fitting recesses and the fitting projections of the core annular portion constituting pieces constituting the end region constituting portion are press-fitted and fitted.

  According to the method for manufacturing a laminated core of a rotating electrical machine according to claim 11, it is possible to reduce a processing force when fitting each fitting convex portion of the tooth portion to each fitting concave portion of the intermediate region constituting portion. Therefore, the processing energy in the fitting step can be reduced.

It is a perspective view which shows a motor core. It is a top view which shows a teeth constituent piece. It is a top view which shows the core cyclic | annular part structural piece which comprises the edge part area | region structural part of an iron core annular part structural part. It is a top view which shows the core cyclic | annular part structure piece which comprises the intermediate | middle area | region structural part of an iron core annular part structural part. It is an expansion perspective view which shows a teeth part. It is an expansion perspective view which shows the edge part structure part arrange | positioned at the axial direction one side of a rotary electric machine, and the cover part attached to the said edge part area structure part. It is an expansion perspective view which shows an intermediate | middle area | region structure part. It is an expansion perspective view which shows the edge part structure part arrange | positioned at the axial direction other side of a rotary electric machine, and the cover part attached to the said edge part area structure part. It is the perspective view which showed the manufacturing process of the motor core typically. It is an enlarged plan view which shows the state which the fitting convex part of the tooth | gear component piece and the fitting recessed part of the core cyclic | annular part structure piece which comprises an edge part area | region structural part fitted. It is an enlarged plan view which shows the state which the fitting convex part of the tooth | gear component piece and the fitting recessed part of the core cyclic | annular part structure piece which comprises an intermediate | middle area | region structure part fitted. It is sectional drawing which shows the cross section which cut | disconnected the motor for vehicles along the axial direction of the rotating shaft. It is an expansion perspective view which shows the rotor which comprises some vehicle motors shown by FIG. It is an expansion perspective view which shows the coil piece which comprises some rotors shown by FIG. FIG. 9B is an enlarged plan cross-sectional view schematically showing a process of inserting a tooth portion into the opening of the coil piece shown in FIG. 9A. It is an expansion perspective view which shows the process in which the fitting convex part of each teeth constituent piece which comprises a teeth part fits the fitting recessed part of each iron core annular part constituent piece which comprises an iron core annular part constituent part. It is a disassembled perspective view which decomposes | disassembles and shows the motor for vehicles.

(Configuration of rotating iron laminated core)
A laminated core of a rotating electrical machine according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5C.

  As shown in FIG. 1, a motor core 10 as a laminated core of a rotating electrical machine according to the present embodiment has a plurality of teeth portions 12 (12 teeth portions 12 in the present embodiment) around which windings (not shown) are wound. It is configured by being fitted to the outer peripheral portion of the core annular portion constituting portion 14 and covering the fitting portion between the teeth portion 12 and the core annular portion constituting portion 14 with a lid portion 76. Hereinafter, the tooth portion 12 will be described first, and then the core annular portion constituting portion 14 and the lid portion 76 will be described.

(Teeth part 12)
The teeth portion 12 is configured by laminating a tooth constituent piece 16 formed in a plate shape in the axial direction of the rotating electrical machine (direction of arrow L). Specifically, as shown in FIG. 2, the tooth constituent piece 16 is formed by stamping (pressing) an iron-based plate material, and the tooth constituent piece 16 is rotated. A rectangular main body 18 extending in the radial direction of the electric machine (in the directions of arrows R1 and R2) is provided. The teeth component piece 16 is connected to the distal end side of the main body portion 18 and includes a distal end portion 20 that extends in the circumferential direction (arrow C1 direction and arrow C2 direction) of the rotating electrical machine.

  Moreover, the fitting convex part 22 formed convexly toward this direction (arrow R2 direction) is formed in the radial direction inner side (arrow R2 direction) end of the rotary electric machine in the tooth | gear component piece 16. As shown in FIG. . The fitting convex portion 22 is formed so as to be narrowed toward the radially outer side (in the direction of arrow R1) of the rotating electrical machine in a plan view, and one circumferential direction side (arrow C1) of the rotating electrical machine in the fitting convex portion 22. Direction) and the other end surface in the circumferential direction (arrow C2 direction) are a pair of fitting convex side taper surfaces T1 (first taper surfaces).

  Further, between the main body portion 18 and the fitting convex portion 22 in the tooth constituent piece 16, the main body portion 18 and the fitting convex portion 22 are coupled and expanded toward the outside in the radial direction of the rotating electrical machine in plan view. A fan-shaped portion 24 formed in a fan shape is provided. Further, a pair of end faces on one side (arrow C1 direction) and the other circumferential side (arrow C2 direction) of the rotating electrical machine in the fan-shaped portion 24 are directed in the direction (arrow C1 or arrow C2 direction). The contact surface T3 (third tapered surface). Further, the pair of contact surfaces T3 are expanded toward the outside in the radial direction of the rotating electrical machine (the direction of the arrow R1).

  In addition, stepped portions 26 are formed at the ends of the rotating electrical machine in the circumferential direction one side (arrow C1 direction) and the other circumferential direction side (arrow C2 direction) at the boundary between the main body 18 and the fan-shaped portion 24, respectively. ing.

  As shown in FIG. 4, the tooth portion 12 is configured by laminating the above-described teeth constituent pieces 16 in the axial direction (direction of arrow L) of the rotating electrical machine. Note that the stacked tooth constituent pieces 16 are integrated via a caulking portion 28.

(Iron core annular component 14 and lid 76)
As shown in FIGS. 1 and 5A to 5C, the core annular portion constituting portion 14 includes end region constituting portions 14 </ b> A and 14 </ b> B disposed on one side and the other side in the axial direction of the rotating electrical machine, and the shaft of the rotating electrical machine. A divided structure (three-divided structure) is formed by the intermediate region constituting part 14C arranged in the middle part of the direction.

  As shown in FIG. 5A, the end region constituting portion 14 </ b> A arranged on one side in the axial direction of the rotating electrical machine has the same thickness as the above-described tooth constituting piece 16 or a thickness smaller than that of the tooth constituting piece 16. The plate-shaped iron core annular portion constituting piece 30 is configured by being laminated in the axial direction (arrow L direction) of the rotating electrical machine. Also, the core annular portion constituting piece 30 is formed by punching (pressing) an iron-based plate material, and is formed in a substantially gear shape in a plan view. More specifically, as shown in FIG. 3A, the outer peripheral portion of the core annular portion constituting piece 30 protrudes radially outward (in the direction of arrow R1) of the rotating electrical machine and is formed in a substantially rhombus shape in plan view. A plurality of rhombus protrusions 34 (in this embodiment, twelve rhombus protrusions 34) are formed, and the plurality of rhombus protrusions 34 extend along the circumferential direction of the rotating electrical machine (the directions of arrows C1 and C2). Arranged at regular intervals. Furthermore, the circumferential width (circumferential width of the rotating electrical machine) on the base end side (the radial inner side of the rotating electrical machine) of the rhombus convex part 34 is H1, and the circumferential width of the tip of the rhombus convex part 34 is Further, the circumferential width of the intermediate portion between the base end side and the distal end of the rhombus convex portion 34 is a dimension H3 wider than H1 and H2.

  Further, by forming the plurality of rhombus convex portions 34 on the outer peripheral portion of the core annular portion constituting piece 30, another rhombus adjacent to the one rhombus convex portion 34 on the outer peripheral portion of the core annular portion constituting piece 30. A concave portion 36 is formed between the convex portion 34 and is opened toward the radially outer side (arrow R1 direction) of the rotating electrical machine. The base end side of the concave portion 36 (inside in the radial direction of the rotating electrical machine) is a fitting concave portion 38 into which the fitting convex portion 22 (see FIG. 2) of the tooth component piece 16 is press-fitted. Further, the fitting recess 38 is formed so as to be narrowed toward the radially outer side (in the direction of arrow R1) of the rotating electrical machine in a plan view. The end surfaces on the other side in the C1 direction and the other circumferential direction (the direction of the arrow C2) are a pair of fitting recessed side tapered surfaces T2 (second tapered surfaces).

  In addition, the tip side of the recess 36 (outside in the radial direction of the rotating electrical machine) is a pair of coverings whose surfaces are respectively directed to the circumferential one side (arrow C1 direction) and the other circumferential side (arrow C2 direction) of the rotating electrical machine. The distal end side widened portion 40 has a contact surface T4 (fourth tapered surface). Further, the pair of contacted surfaces T4 are expanded toward the radially outer side (in the direction of arrow R1) of the rotating electrical machine. As shown in FIG. 1, a circular insertion hole 32 into which the rotating shaft 68 (see FIG. 8) is inserted (press-fitted) is formed in the center portion of the core annular portion constituting piece 30.

  As shown in FIG. 5A, the above-described core annular portion constituting piece 30 is laminated in the axial direction (arrow L direction) of the rotating electrical machine to constitute an end region constituting portion 14A, and this end region. The component part 14A is integrated via a caulking part 42.

  A lid 76 formed in a disk shape is attached to the end region constituting portion 14A. The lid portion 76 is formed in a disc shape having an outer diameter substantially the same as the outer diameter of the core annular portion constituting piece 30, and the core portion of the lid portion 76 is formed on the core annular portion constituting piece 30. An insertion hole 78 having the same diameter as the formed insertion hole 32 is formed. Further, the lid 76 is attached to the end surface (end surface on one side in the axial direction of the rotating electrical machine) of the end region constituting portion 14A via the caulking portion 42, that is, the lid 76 is the end region constituting portion. It is integrated with 14A.

  The configuration of the end region constituent portion 14B arranged on the other axial side of the rotating electrical machine shown in FIG. 5C is the same as the configuration of the end region constituent portion 14A shown in FIG. 5A. Further, the lid portion 76 is attached to the end surface of the end region constituting portion 14B (the end surface on the other side in the axial direction of the rotating electrical machine).

  As shown in FIG. 5B, the intermediate region constituting portion 14 </ b> C has an iron core annular portion constituting piece 31 formed in a plate shape having the same plate thickness as the above-described tooth constituting piece 16 or a plate thickness thinner than the tooth constituting piece 16. Are stacked in the axial direction of the rotating electrical machine (the direction of the arrow L). Further, the core annular portion constituting piece 31 is formed by performing additional processing on the core annular portion constituting piece 30 constituting the end region constituting portions 14A and 14B. Specifically, as shown in FIG. 3B, the width of the fitting recess 39 of the core annular portion constituting piece 31 is wider than the width of the fitting recess 38 of the core annular portion constituting piece 30. Thereby, the fitting convex part 22 (refer FIG. 2) of the teeth component piece 16 is loosely fitted in the fitting recessed part 39 of the core annular part component piece 31. As shown in FIG. 5B, the core annular part constituting piece 31 described above is laminated in the axial direction of the rotating electricity, and the laminated core annular part constituting piece 31 is integrated through the caulking part 42. An intermediate region configuration unit 14C is configured.

  In the present embodiment, the sum of the number of laminated core annular portion constituting pieces 30 constituting the end region constituting portions 14A and 14B and the number of laminated core annular portion constituting pieces 31 constituting the intermediate region constituting portion 14C is the teeth. This is the same as the number of stacked teeth constituting pieces 16 constituting the portion 12.

(Method of manufacturing a laminated iron core of a rotating electrical machine)
Next, a method for manufacturing the above-described motor core 10 will be described with reference to FIGS. 5D to 6B.

  As shown in FIG. 5D, first, twelve tooth portions 12 are arranged in an annular shape, that is, twelve tooth portions 12 are arranged at equal intervals along the circumferential direction of the rotating electrical machine (tooth portion arranging step). . Each tooth portion 12 arranged in an annular shape is held by a jig (not shown).

  Next, by moving the intermediate region constituting portion 14C in the direction of arrow A, as shown in FIG. 6B, the fitting recess 39 and the teeth portion 12 of each core annular portion constituting piece 31 constituting the intermediate region constituting portion 14C. Are fitted (freely fitted) with the fitting convex portions 22 of the respective teeth constituting pieces 16 constituting the. Further, when the fitting convex portion 22 of the tooth constituting piece 16 is fitted into the fitting concave portion 39 of the core annular portion constituting piece 31, the contact surface T3 of the tooth constituting piece 16 is applied to the core annular portion constituting piece 31. It abuts on the contact surface T4.

  Next, as shown in FIG. 5D, by moving the end region component 14A and the end region component 14B in the directions of arrows B and C, respectively, the end region component as shown in FIG. 6A. 14A and the end region constituting portion 14B are fitted to the fitting concave portions 38 of the respective core annular portion constituting pieces 30 and the fitting convex portions 22 of the respective tooth constituting pieces 16 constituting the teeth portion 12 (press-fit). ) Further, when the fitting convex portion 22 of the tooth constituting piece 16 is fitted into the fitting concave portion 38 of the core annular portion constituting piece 30, the contact surface T3 of the tooth constituting piece 16 is applied to the core annular portion constituting piece 30. It abuts on the contact surface T4.

  As shown in FIG. 5D, by moving the end region constituting portion 14A and the end region constituting portion 14B in the directions of arrows B and C, respectively, the lid portion 76 is moved to the end face of the tooth portion 12 (in the axial direction of the rotating electrical machine). The end face of As a result, as shown in FIG. 1, the fitting convex portions 22 of the teeth constituting pieces 16 and the fitting concave portions 38 of the core annular portion constituting pieces 30 disposed at both ends in the axial direction of the rotating electrical machine are covered by the lid portion 76. And the boundary between the contact surface T3 of the teeth component piece 16 disposed at the axial end of the rotating electrical machine and the contacted surface T4 of the core annular portion component piece 30 disposed at the axial end of the rotating electrical machine. Covered by the lid 76 (fitting process).

  The motor core 10 is manufactured through the above steps.

(Operation and effect of this embodiment)
Next, the operation and effect of this embodiment will be described.

  As shown in FIG. 1, according to the motor core 10 of the present embodiment and the method for manufacturing the motor core 10, the fitting convex portion 22 and the iron core annular portion of the teeth constituent piece 16 disposed at the axial end of the rotating electrical machine. Since the fitting concave portion 38 of the component piece 30 is covered by the lid portion 76, the burr generated when the fitting concave portions 38 and 39 and the fitting convex portion 22 are fitted to each other is outside the motor core 10. Can be prevented from falling off. In other words, the burr can be confined in the motor core 10.

  Further, in the motor core 10 of the present embodiment, the contact surface T3 of each of the laminated tooth constituent pieces 16 abuts on the abutted surface T4 of each of the iron core annular portion constituent pieces 30, 31 to be laminated, The inclination of the teeth part 12 with respect to the core annular part constituting part 14 is restricted. Further, when the magnetic flux flows from the tooth portion 12 to the core annular portion constituting portion 14, or when the magnetic flux is caused to flow from the core annular portion constituting portion 14 to the teeth portion 12, the fitting convex portion 22 and the fitting concave portions 38 and 39 In addition to the fitting portion, the magnetic flux can flow through the boundary between the contact surface T3 and the contacted surface T4. That is, the magnetic flux can be prevented from decreasing at the boundary between the tooth portion 12 and the core annular portion constituting portion 14 and the inclination of the tooth portion 12 with respect to the core annular portion constituting portion 14 can be suppressed. In addition to this, in the present embodiment, the contact surface T3 of the tooth constituent piece 16 disposed at the axial end of the rotating electrical machine and the covered portion of the core annular portion constituent piece 30 disposed at the axial end of the rotating electrical machine. Since the boundary with the contact surface T4 is covered by the lid portion 76, it is possible to suppress the burr generated at the boundary between the contact surface T3 and the contacted surface T4 from dropping out of the motor core 10.

  Furthermore, according to the motor core 10 of the present embodiment, since the lid portions 76 are provided at both ends in the axial direction of the rotating electrical machine, the fitting convex portions 22 and the fitting concave portions 38 and 39 are fitted. It is possible to further suppress the burrs generated at this time from dropping out of the motor core 10.

  In addition, according to the motor core 10 and the method for manufacturing the motor core 10 of the present embodiment, the core annular portion constituting portion 14 has a three-part structure including the intermediate region constituting portion 14C and the end region constituting portions 14A and 14B. Therefore, it is possible to fit the fitting concave portions 38 and 39 of the core annular portion constituting pieces 30 and 31 and the fitting convex portion 22 of the tooth constituting piece 16 by dividing the number according to the number of divisions. Thereby, the peak value of the processing force at the time of integrating the teeth part 12 and the core annular part structure part 14 can be reduced.

  Furthermore, according to the motor core 10 and the manufacturing method of the motor core 10 of the present embodiment, the fitting recess 39 of each core annular portion constituting piece 31 constituting the intermediate region constituting portion 14C and each tooth constituting the tooth portion 12 are provided. Since the fitting protrusion 22 of the component piece 16 is loosely fitted, the work when the teeth portion 12 and the core annular portion component 14 are integrated can be reduced. Processing energy can be reduced.

  Further, in the motor core 10 of the present embodiment, the number of laminations of the core annular portion constituting pieces 30 constituting the end region constituting portions 14A and 14B and the number of laminations of the core annular portion constituting pieces 31 constituting the intermediate region constituting portion 14C are determined. The sum is consistent with the number of teeth constituting pieces 16 constituting the teeth portion 12 and the core annular portion constituting pieces 30 and 31 have the same thickness as the teeth constituting pieces 16 or from the teeth constituting pieces 16. The thickness is also thin. Therefore, the lid portion 76 can be reliably brought into contact with the end surface (the fitting convex portion 22) of the tooth component piece 16. In particular, when the plate thickness of the core annular portion constituting pieces 30 and 31 is thinner than that of the tooth constituting piece 16, the lid portion 76 is connected to the end face (fitting convex portion of the tooth constituting piece 16. 22). Thereby, it is possible to prevent the burr generated between the fitting convex portion 22 and the fitting concave portion 38 from dropping from between the lid portion 76 and the fitting convex portion 22.

  In this embodiment, the fitting recess 39 of each core annular portion constituting piece 31 constituting the intermediate region constituting portion 14C and the fitting convex portion 22 of each tooth constituting piece 16 constituting the tooth portion 12 are free of play. Although the fitted example has been described, the present invention is not limited to this. For example, the intermediate region constituting portion can be constituted by using the core annular portion constituting piece 30 constituting the end region constituting portion 14A. In this case, the fitting concave portion 38 of each core annular portion constituting piece 30 constituting the intermediate region constituting portion and the fitting convex portion 22 of each tooth constituting piece 16 constituting the tooth portion 12 are press-fitted and fitted.

  In the present embodiment, the example in which the core annular portion constituting portion 14 has a three-part structure by the intermediate region constituting portion 14C and the end region constituting portions 14A and 14B has been described, but the present invention is not limited thereto. Alternatively, an iron core annular portion constituting portion that is not divided may be used. in this way. Whether or not the core annular portion constituting portion is divided may be set as appropriate in consideration of the peak value of the processing force in the fitting step.

  Further, in the present embodiment, an example in which the above-described lid portions 76 are provided at both ends in the axial direction of the rotating electrical machine has been described, but the present invention is not limited to this. For example, depending on the positional relationship between the motor core 10 and other rotating electrical machine components, the lid 76 may be provided only at one end in the axial direction of the rotating electrical machine.

  Moreover, in this embodiment, the contact surface T3 of the tooth | gear component piece 16 arrange | positioned at the axial direction end of a rotary electric machine, and the to-be-contacted surface of the core cyclic | annular part component piece 30 arrange | positioned at the axial direction end of a rotary electric machine. Although an example in which the boundary with T4 is covered by the lid portion 76 has been described, the present invention is not limited to this. For example, only the fitting convex part 22 of the teeth constituent piece 16 and the fitting concave part 38 of the core annular part constituent piece 30 arranged at the end in the axial direction of the rotating electrical machine may be covered by the lid part.

(Vehicle motor 44)
Next, a vehicle motor 44 as a rotating electrical machine including the motor core 10 according to the embodiment will be described with reference to FIGS. 7 to 9C.

  As shown in FIG. 7, the vehicle motor 44 of the present embodiment includes a stator 46 that includes a yoke 46 that constitutes an outline of the vehicle motor 44 and a magnet 56 that is attached to the yoke 46, and A rotor 48 disposed in the yoke 46 is configured as a main element. Specifically, the yoke 46 is formed in a bottomed cylindrical shape, and a bearing member 52 on which one end of a rotating shaft 68 to be described later is supported is fixed to the bottom wall 50 of the yoke 46. Further, a plurality of magnets 56 are joined along the circumferential direction on the radially inner side of the circumferential wall 54 of the yoke 46, and the magnets 56 are arranged to face the motor core 10 in the radial direction of the rotating electrical machine. . The open end of the yoke 46 is closed by a support member 62 that supports the brush 58 and the brush holder 60, and a bearing member 52 that supports the other end of the rotating shaft 68 is fixed to the support member 62. ing.

  Further, as shown in FIG. 8, the rotor 48 is configured by fixing an armature main body 64 and a commutator 66 and the like for energizing the armature main body 64 to a cylindrical rotary shaft 68. . Furthermore, the armature body 64 is configured by winding a conductive winding 70 around the tooth portion 12 (see FIG. 1) of the motor core 10 described above. The manufacturing method of the armature body 64 will be briefly described. First, as shown in FIG. 9A, a coil formed by sealing a conductive winding 70 wound in an annular shape with a sealing resin. The pieces 72 are arranged radially along the circumferential direction of the rotating electrical machine. Next, as shown in FIG. 9B, the tooth portion 12 is inserted into the opening 74 of the coil piece 72 from the outside in the radial direction of the coil pieces 72 arranged in an annular shape. Next, as shown in FIG. 9C, the core annular portion constituting portion 14 and the tooth portion 12 are integrated through the above-described fitting step. The armature body 64 is configured through the above steps.

  As shown in FIGS. 7 and 8, the rotary shaft 68 is press-fitted into the axial center portion of the armature body 64 (the axial center portion of the core annular portion constituting portion 14). Is attached with a commutator 66. Note that a terminal portion of the winding 70 constituting the coil piece 72 is connected to the commutator 66. Thereby, it is possible to energize the winding 70 constituting the coil piece 72 via the brush 58 that is in sliding contact with the commutator 66.

  According to the vehicle motor 44 described above, it is possible to suppress burrs generated at the time of manufacturing the motor core 10 from dropping out of the motor core 10. Thereby, generation | occurrence | production of the abnormal noise etc. by said burr | flash contacting the rotor 48 or the stator 47 can be suppressed.

  In the above embodiment, the example in which the vehicle motor 44 is configured using the rotor 48 including the motor core 10 described above has been described, but the present invention is not limited to this. For example, as shown in FIG. 10, a vehicle motor 80 as a rotating electrical machine can be configured using a stator 82 configured to include the motor core 10 described above. The configuration of the vehicle motor 80 will be briefly described. The stator 82 is a stator of a three-phase induction motor. The stator 82 is a U-core wound around the motor core 10 and the tooth portion 12 of the motor core 10. Phase, V phase, and W phase windings 84U, 84V, 84W. The rotor 86 includes a rotating shaft 88 formed in a columnar shape, a rotor housing 90 formed in a bottomed cylindrical shape and fixed to the rotating shaft 88, and fixed to the rotor housing 90 and a motor core. 10 and a magnet 92 arranged opposite to the radial direction of the rotating electrical machine.

  In the vehicle motor 80 described above, as in the case of the vehicle motor 44 described above, it is possible to suppress the burrs generated at the time of manufacturing the motor core 10 from dropping out of the motor core 10. The generation of abnormal noise or the like due to contact with the rotor 86 or the stator 82 can be suppressed.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and various modifications other than the above can be implemented without departing from the spirit of the present invention. Of course.

DESCRIPTION OF SYMBOLS 10 ... Motor core (laminated iron core of a rotary electric machine), 12 ... Teeth part, 14 ... Iron core annular part component, 14A ... End part component part, 14B ... End part component part, 14C ... Middle area component part, 16 ... Teeth Component piece, 22 ... fitting convex part, 30 ... iron core annular part constituent piece, 31 ... iron core annular part constituent piece, 38 ... fitting concave part, 39 ... fitting concave part, 44 ... vehicle motor (rotary electric machine), 47 ... Stator, 48 ... rotor, 56 ... magnet, 66 ... commutator, 68 ... rotary shaft, 70 ... winding, 76 ... lid portion, 80 ... vehicle motor (rotary electric machine), 82 ... stator, 84U ... winding , 84V ... winding, 84W ... winding, 86 ... rotor, 88 ... rotating shaft, 92 ... magnet, T3 ... contact surface, T4 ... contact surface

Claims (11)

A tooth portion formed by laminating a tooth constituent piece that extends in the radial direction of the rotating electrical machine and has a fitting convex portion provided at an end portion on the radially inner side of the rotating electrical machine in the axial direction of the rotating electrical machine. When,
An iron core annular part constituting part constituted by laminating an iron core annular part constituting piece provided with a fitting concave part to which the fitting convex part fits in an outer peripheral part in the axial direction of the rotating electrical machine;
A lid that covers the fitting convex part of the teeth constituent piece and the fitting concave part of the core annular part constituent piece arranged at the axial end of the rotating electric machine from the axial end side of the rotating electric machine;
A laminated iron core of a rotating electrical machine with A pair of contact surfaces whose surfaces are directed in the circumferential direction of the rotating electrical machine are provided on the radially outer portion of the rotating electrical machine of the fitting convex portion in the teeth constituent piece,
The iron core annular part constituting piece is provided with a pair of abutting surfaces with which the surface is directed in the circumferential direction of the rotating electrical machine and the pair of abutting surfaces abuts.
The laminated core of the rotating electrical machine according to claim 1, wherein the lid covers a boundary between the contact surface and the contacted surface from an axial end side of the rotating electrical machine. The fitting convex part of the teeth constituent piece and the fitting concave part of the core annular part constituent piece arranged at one end in the axial direction of the rotating electrical machine are covered with the lid part,
The said fitting convex part of the said teeth constituent piece arrange | positioned at the end of the other axial direction side of the said rotary electric machine, and the said fitting concave part of the said core annular part constituent piece are covered with the said cover part. Item 3. A laminated iron core of a rotating electric machine according to Item 2. The core annular portion constituting portion includes a predetermined number of the core annular portion constituting pieces laminated in the axial direction of the rotating electrical machine, and an intermediate region constituting portion obtained by integrating the laminated core annular portion constituting pieces. The number of the core annular part constituent pieces is laminated in the axial direction of the rotating electric machine, and the end part constituent parts integrated with the laminated core core part constituting pieces are configured.
The laminated core of the rotating electrical machine according to any one of claims 1 to 3, wherein the lid portion is attached to an end surface in the axial direction of the end region constituting portion. The fitting concave portion and the fitting convex portion of the core annular portion constituting piece constituting the intermediate region constituting portion are loosely fitted,
The laminated core of the rotating electrical machine according to claim 4, wherein the fitting concave portion and the fitting convex portion of the core annular portion constituting piece constituting the end region constituting portion are press-fitted.   The dimension to the axial direction of the said rotary electric machine of the said core annular part structure part is set smaller than the dimension to the axial direction of the said rotary electric machine of the said teeth part, The any one of Claims 1-5. The laminated iron core of the described rotating electrical machine. A stator comprising the laminated core of the rotating electrical machine according to any one of claims 1 to 6, and a winding wound around the teeth portion,
A rotor having a magnet disposed so as to be opposed to the laminated iron core of the rotating electrical machine and capable of rotating integrally with a rotating shaft;
Rotating electric machine with The laminated iron core of the rotating electrical machine according to any one of claims 1 to 6, a winding wound around the tooth portion, a commutator to which a terminal portion of the winding is connected, and the rotating electrical machine A laminated iron core and a rotating shaft to which the commutator is fixed, and a rotor configured to include:
A rotating electrical machine comprising: a stator having a magnet disposed facing the laminated core of the rotating electrical machine. It is applied to the manufacture of a laminated core of a rotating electrical machine according to any one of claims 1 to 6,
A teeth portion arranging step of arranging the teeth portions in a ring shape;
The teeth arranged in an annular shape by fitting the fitting convex part into the fitting concave part and the core annular part constituting part are integrated, and the teeth arranged at the axial end of the rotating electrical machine. A fitting step of covering the fitting convex portion of the constituent piece and the fitting concave portion of the core annular portion constituent piece with the lid portion from the axial end of the rotating electrical machine;
The manufacturing method of the laminated iron core of the rotary electric machine which has this. Applied to the manufacture of a laminated core of a rotating electrical machine according to claim 4 or claim 5,
A teeth portion arranging step of arranging the teeth portions in a ring shape;
The fitting concave portion and the fitting convex portion of the core annular portion constituting piece constituting the intermediate region constituting portion are fitted, and then the core annular portion constituting piece constituting the end region constituting portion The teeth arranged in an annular shape by fitting the fitting concave portion and the fitting convex portion and the core annular portion constituting portion are integrated, and the teeth are arranged at the axial end of the rotating electrical machine. A fitting step of covering the fitting convex portion of the constituent piece and the fitting concave portion of the core annular portion constituent piece with the lid portion from the axial end of the rotating electrical machine;
The manufacturing method of the laminated iron core of the rotary electric machine which has this.   In the fitting step, the fitting concave portion and the fitting convex portion of the core annular portion constituting piece constituting the intermediate region constituting portion are loosely fitted, and then the iron portion constituting the end region constituting portion. The manufacturing method of the laminated iron core of the rotary electric machine of Claim 10 which press-fits the said fitting recessed part and the said fitting convex part of an annular part component piece.

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