Abstract: An electric machine includes a stator stack of laminations, pierced with a cylindrical passage for housing a rotatable rotor therein. The stator includes a magnetic circuit of laminations stacked between first and second terminal faces crossed by the passage and by a series of slots housing conductors, which are folded over to form coils. An electrically insulating reinforcing wedge piece is interposed between an internal wall of a first tubular end and a corresponding portion of a block of resin surrounding a region of winding heads of the conductors, which follow a looped path in the block of resin. A wedging unit wedges the insulating reinforcing piece in position to prevent the insulating reinforcing piece from protruding axially internally on the internal wall with respect to the region so as to leave a determined annular sector of the internal wall in direct adhering contact with the block of resin.

Abstract: A buried-magnet internal rotor (1) for an electric rotating machine, the rotor including a shaft (2), a plurality of polar parts (30) made of a magnetic material surrounding the shaft, the polar parts delimiting housings (40) between them, a first lateral shroud (5) and a second lateral shroud (5?) axially on each side of the polar parts along the shaft (2), the shaft passing through each lateral shroud through a central opening in each lateral shroud, at least one tie-rod (6) per polar part, the tie-rod clamping each polar part between the lateral shrouds, permanent magnets (4) placed in the housings (40), wherein the shaft includes, for the first lateral flange (5), an internal shoulder (22) designed to form an axial abutment against which the first flange is held axially by an external ring (26) secured to the shaft.

Abstract: A buried-magnet internal rotor (1) for an electric rotating machine, the rotor comprising: a shaft (2), a plurality of polar parts (30) made of a magnetic material surrounding the shaft, the polar parts delimiting housings (40) between them, a first lateral shroud (5) and a second lateral shroud (5?) axially on each side of the polar parts along the shaft (2), the shaft passing through each lateral shroud through a central opening in each lateral shroud, at least one tie-rod (6) per polar part, the tie-rod clamping each polar part between the lateral shrouds, permanent magnets (4) placed in the said housings (40), wherein the shaft comprises, for the first lateral flange (5), an internal shoulder (22) designed to form an axial abutment against which the first flange is held axially by an external ring (26) secured to the shaft.

Abstract: An electric machine includes a stator stack of laminations, pierced with a cylindrical-walled passage intended to house a rotor that rotates about an axis inside the stator, creating an air gap between the two, and a casing enclosing the resulting assembly in whole. The stator includes a magnetic circuit of laminations stacked between first and second terminal faces crossed, firstly, by the cylindrical passage and, secondly, by a series of slots housing conductors, which are folded over, in winding heads potted in a block of resin, from one slot to the next as they leave each terminal face, to form coils. An external lateral wall of the magnetic circuit is blocked on an inside portion in an internal lateral wall of a casing sleeve to form an entity capable of withstanding torques generated in the air gap during operation.