The invention relates to a discharge device (10) for discharging electro-static charges from a shaft (39), comprising an annular holder (11) and a conductor arrangement (12), said conductor arrangement comprising at least one flexurally elastic conductor (13) arranged on the holder, said conductor being made of a carbon fiber arrangement, each end of the conductor being accommodated in the holder, said conductor arrangement comprising at least two conductor portions (33) extending transversely to a longitudinal shaft axis (32), said conductor portions each comprising a shaft contact portion (34) which together form a contact arrangement for being contacted with two circumferential contact areas of a shaft circumference (35), which are arranged in a shaft contact plane W, in such a manner that the shaft contact portions are arranged tangentially to the shaft circumference upon contact to the shaft circumference.

A winding arrangement in a machine component for a rotary electrical machine (1), comprising: a plurality of slots (11); a winding (7) which is wound with a winding conductor (8) and has a plurality of coils (12) which each run through two of the slots (11), wherein coil sides, which are accommodated in the slots (11), of at least one last-wound coil (16) are exposed toward corresponding slot openings of the slots (11); and at least one fixing winding (17, 20a, 20b) which is formed by a section of the winding conductor (8) and has at least one fixing turn which runs transversely across a coil head (14) of the at least one last-wound coil (16) of the winding (7).

A rotor includes coils that are formed by winding wires around bobbins of a core, terminals which are arranged on the bobbins and to which end portions of the wires are hooked, and a commutator arranged at an end portion of the core on a side where the terminals are arranged. The terminals and commutator segments of the commutator are electrically connected via metal pieces extending from the commutator segments and via a wiring board.

A rotor includes coils that are formed by winding wires around bobbins of a core, terminals which are arranged on the bobbins and to which end portions of the wires are hooked, and a commutator arranged at an end portion of the core on a side where the terminals are arranged. The terminals and commutator segments of the commutator are electrically connected via metal pieces extending from the commutator segments and via a wiring board.