公开(公告)号：EP2374199A2

公开(公告)日：2011-10-12

申请号：EP09760807.9

申请日：2009-11-17

申请人： Robert Bosch GmbH

发明人： MEYER, Reinhard ,  GREIF, Hubert ,  REUTLINGER, Kurt ,  HEIDRICH, Markus ,  RETANA, Roberto

IPC分类号： H02K1/17

CPC分类号： H02K1/2786 ,  H02K1/2753 ,  H02K2201/12

摘要： The invention relates to an electric machine, particularly a transversal flux machine, comprising a rotor (1) designed as outer rotor (2) or inner rotor (57), comprising at least one reflux ring (7) having a longitudinal axis (27, 39, 52), permanent magnets (3, 31, 44, 58) having alternating magnetic polarity (14, 32) being disposed in an angular offset manner on said reflux ring. According to the invention, the reflux ring (7) comprises at least two axially adjacently joined reflux partial rings (5, 6, 28, 29, 35, 43, 50, 51, 60, 61) and the permanent magnets (3, 31, 44, 58) are located in the gaps (17) between the permanent magnets (3, 31, 44, 58) of the other reflux partial ring (5, 6, 28, 29, 35, 43, 50, 51, 60, 61) when joining the two reflux partial rings (5, 6, 28, 29, 35, 43, 50, 51, 60, 61). The invention further relates to a method for producing an electric machine.

公开(公告)号：EP1702397A1

公开(公告)日：2006-09-20

申请号：EP04805056.1

申请日：2004-12-30

申请人： ROBERT BOSCH GMBH

发明人： LUTZ, Hans-Joachim ,  MEYER, Reinhard ,  RADEMACHER, Guenter

IPC分类号： H02K1/24

CPC分类号： H02K1/243

摘要： The invention relates to a claw pole rotor for an electrical machine, especially a three-phase alternator, comprising two pole wheels (26, 27) carrying claw poles (28 or 29) originating from a plate region (50) and respectively comprising a pole root (53). Claw poles (28, 29) of the pole wheels (26, 27) are arranged in an alternating manner with intermediate gaps (90) thereinbetween on a circumferential part of the claw pole rotor (20). A claw pole (28, 29) has a radially outwardly oriented surface (43) in the form of a cylinder jacket, through which a rotational axis (65) is defined, and a chamfer (68) extends in a circumferential direction and in an edge direction of a claw pole (28 or 29), said chamfer (68) having a central section m in the edge direction, that cuts a transition plane (59) adjacent to the pole root (53) and the freely protruding part of the claw pole (28 or 29). The central section m corresponds to 8/10 of the length of the chamfer (68) oriented in the edge direction, and the claw pole (28, 29) has a width BK oriented in the circumferential direction, a half-width BK defining a point (P) on the cylindrical surface (43) in a plane of the claw pole (28, 29) perpendicular to the rotational axis (65). A tangent (Z) can be inscribed in said point (P), and an angle of inclination A, between 15° and 25°, is enclosed in the plane perpendicular to the rotational axis (65), between the tangent (T) and the chamfer (68).