Patent ID: 7170206

Claim:
A rotor for a rotary electrical machine, comprising a core ( 14 ) on which there is formed at least one electrical winding ( 16 ), at least one electrically conductive element ( 18 ) which is wound in such a way as to form the winding ( 16 ) and which is clad with at least one layer ( 30 ) of an electrically insulating material and coated with an outer bonding layer ( 32 ) which comprises a bonding material that enables adjacent portions of the coated conductive element ( 18 ) to be joined together, in which the winding step is followed by a step of change of state, by Joule-effect heating of a conductive element ( 18 ), which causes melting of the bonding material so that the bonding material at least partially fills the interstices that exist between the adjacent portions of the wound conductive element ( 18 ), and which then causes the bonding material to solidify once more so as to bond together the adjacent portions of the wound conductive element ( 18 ), wherein the winding of the conductive element ( 18 ) is disposed on the convex outer cylindrical wall ( 40 ) of a tubular element ( 42 ) of the core, and wherein, after the said step of change of state, the tubular element ( 42 ) is assembled on a core body ( 44 ) in such a way as to minimize the temperature gradient in the winding ( 16 ) during the step of change of state, and wherein the core ( 14 ) comprises an external tubular element ( 42 ), on the convex outer cylindrical wall ( 40 ) of which the winding ( 16 ) is formed, and wherein an electrically insulating element is interposed axially between the windings ( 16 ) and the convex outer cylindrical wall ( 40 ) of the tubular element ( 42 ) of the core, and holds the winding ( 16 ) and tubular element ( 42 ) mechanically together.