Abstract: A coil alignment device includes: a plate-shaped first jig having a plurality of grooves arranged along a circumferential direction so as to extend toward a radial-direction outer side; and a second jig that can contact with a segment coil inserted in the first jig. Each groove includes a storage portion extending along a radial direction and having a first length so that leg portions of the segment coils can be stored side by side in the radial direction, and a guiding portion extending from the storage portion toward the radial-direction outer side, and has a first shape so that, using, as a fulcrum, one leg portion inserted in the storage portion, the other leg portion is movable toward the storage portion. The second jig is movable to press the segment coil from a radial-direction side and store the other leg portion into the storage portion.

Abstract: A manufacturing method for a laminated core of a rotating electric machine includes a laminating step and a core separating step. In the laminating step, a plurality of core elements are laminated, thereby forming an element laminate. In the core separating step, under a state in which the element laminate is pressed in a lamination direction of the plurality of core elements, a part of the element laminate is moved from the element laminate in a direction orthogonal to the lamination direction by a set dimension in the lamination direction, thereby obtaining a separated laminate.

Abstract: A rotating electrical machine includes a stator core including a plurality of stacked electromagnetic steel sheets, the stator core includes a core back and a tooth protruding from the core back, the tooth includes: plural first welded portions arranged on a first lateral face of the tooth with respect to a plane extending in a stacking direction of the electromagnetic steel sheets and equally dividing the width of the tooth, the first welded portions being arranged in the stacking direction; and plural second welded portions arranged on a second lateral face of the tooth with respect to the plane extending in the stacking direction, the second welded portions being arranged in the stacking direction, and the first welded portions and the second welded portions are staggered in the stacking direction.

Abstract: A rotating electrical machine includes a stator core including a plurality of stacked electromagnetic steel sheets, the stator core includes a core back and a tooth protruding from the core back, the tooth includes: plural first welded portions arranged on a first lateral face of the tooth with respect to a plane extending in a stacking direction of the electromagnetic steel sheets and equally dividing the width of the tooth, the first welded portions being arranged in the stacking direction; and plural second welded portions arranged on a second lateral face of the tooth with respect to the plane extending in the stacking direction, the second welded portions being arranged in the stacking direction, and the first welded portions and the second welded portions are staggered in the stacking direction.

Abstract: Provided is a method for fabricating a molded stator of a rotary electric machine, the method comprising: a lamination step of laminating a plurality of core sheets each having a plurality of core pieces connected to one joining portion via bridge portions, thereby forming a divided-laminated-core group structure; a winding step of winding a coil on a teeth portion of each divided laminated core of the divided-laminated-core group structure; a cutting step of cutting the bridge portions, thereby separating the divided laminated cores wound with the coils; a temporary fixing step of temporarily fixing the divided laminated cores circularly arranged to form a stator; and a molding step of placing, in a mold, the stator into which a mold mandrel is inserted along the inner circumferential surface, and molding an outer circumferential surface of the stator with resin.

Abstract: A stator of a rotary electric machine, in which an insulating capacity higher than or equal to an insulating capacity of a flat portion of a stator core can be maintained at edge portions of the stator core. The stator of the rotary electric machine includes a core-sheet laminate that is formed by laminating a plurality of core sheets made of metal plates; a coating film that is made of an insulating paint coated on a surface of the core-sheet laminate; a stator coil that is made of a conductive wire wound around the core-sheet laminate via the coating film; and bobbins made of an insulating material, which are inserted between the coating film and the stator coil and prevent the conductive wire of the stator coil from contacting the coating film that is coated on edge portions of the core-sheet laminate, or relieve pressure caused by the contact.

Abstract: Provided is a method for fabricating a molded stator of a rotary electric machine, the method comprising: a lamination step of laminating a plurality of core sheets each having a plurality of core pieces connected to one joining portion via bridge portions, thereby forming a divided-laminated-core group structure; a winding step of winding a coil on a teeth portion of each divided laminated core of the divided-laminated-core group structure; a cutting step of cutting the bridge portions, thereby separating the divided laminated cores wound with the coils; a temporary fixing step of temporarily fixing the divided laminated cores circularly arranged to form a stator; and a molding step of placing, in a mold, the stator into which a mold mandrel is inserted along the inner circumferential surface, and molding an outer circumferential surface of the stator with resin.

Abstract: A laminated core block includes a plurality of core members made of magnetic sheets stacked one on top of another, the plurality of core members including first and second core members which adjoin in a laminating direction, and a thermoplastic resin strand placed between the first and second core members. The thermoplastic resin strand is arranged to pass along one side surface of the first core member, between the first and second core members and along a side surface of the second core member on a side opposite to the aforementioned side surface of the first core member in this order. The first and second core members are bonded to each other by melting and curing the thermoplastic resin strand.

Abstract: A laminated core block includes a plurality of core members made of magnetic sheets stacked one on top of another, the plurality of core members including first and second core members which adjoin in a laminating direction, and a thermoplastic resin strand placed between the first and second core members. The thermoplastic resin strand is arranged to pass along one side surface of the first core member, between the first and second core members and along a side surface of the second core member on a side opposite to the aforementioned side surface of the first core member in this order. The first and second core members are bonded to each other by melting and curing the thermoplastic resin strand.

Abstract: A laminated core block includes a plurality of core members made of magnetic sheets stacked one on top of another, the plurality of core members including first and second core members which adjoin in a laminating direction, and a thermoplastic resin strand placed between the first and second core members. The thermoplastic resin strand is arranged to pass along one side surface of the first core member, between the first and second core members and along a side surface of the second core member on a side opposite to the aforementioned side surface of the first core member in this order. The first and second core members are bonded to each other by melting and curing the thermoplastic resin strand.

Abstract: A laminated core block includes a plurality of core members made of magnetic sheets stacked one on top of another, the plurality of core members including first and second core members which adjoin in a laminating direction, and a thermoplastic resin strand placed between the first and second core members. The thermoplastic resin strand is arranged to pass along one side surface of the first core member, between the first and second core members and along a side surface of the second core member on a side opposite to the aforementioned side surface of the first core member in this order. The first and second core members are bonded to each other by melting and curing the thermoplastic resin strand.