Claw pole generator

A claw pole generator comprising a drive shaft, two field spider halves (13.1, 13.2) mounted on the drive shaft, each of which includes a disk-shaped plate (15) and a plurality of claw-shaped magnetic pole magnets (17) having identical polarities and extending under a sheet metal packet of a stater (19) and mounted on the disk-shaped plate (15) so that the magnetic pole elements (17) of each of said field spider halved are engaged with each other, a plurality of permanent magnetic pieces (27), each of which is arranged between adjacent ones of the magnetic pole elements (17), wherein a plurality of grooves (21) are provided in the disk-shaped plate (15) of at least one of the two field spider halves (13.1, 13.2), each of said grooves (21) being provided at both sides with undercuts (25) and extending in said plate (15) between identical magnetic pole elements (17) in a longitudinal direction of the drive shaft (5) and having an undercut (25), and each of the permanently magnetic pieces (27) at axially outwardly located end regions have a section which fits into one of the grooves (21) so that said permanently magnetic pieces (27) are inserted in respective ones of said grooves (21) and radially secured on said undercuts (25);

• an arc-shaped segment (35) consisting of a nonmagnetic material inserted in each of the grooves (21), and wherein said arch-shaped segments (35) are braced against said permanently magnetic pieces (27) in the grooves, said arch-shaped segments (35) being radially exterior to said permanently magnetic pieces (27) and said arch-shaped segments (35) extending over an entire thickness of the disk-shaped plate (15).