Patent ID: 6577029
Filing Date: 2003-06-10
Classification: H02K

Abstract:
An electric-motor drive mechanism with an electric motor (12) that has a brush holder (16, 116, 216) for containing brushes and at least one magnetic field sensor (18a, 18b, 118, 218) for detecting the magnetic field of a magnetic wheel (19) non-rotatably connected to the motor armature shaft (32) and an electronics housing (20) for containing an electronics mounting plate (24, 124, 224) for a set of motor output and/or control electronics, wherein the electronics mounting plate (24) is disposed outside an electric motor pole pot housing (26) on a support (28, 128, 228) formed onto the brush holder (16, 116, 216), characterized in that the at least one magnetic field sensor (18a, 18b, 118, 218) directly contacts connection points of the control electronics on the electronics mounting plate (24, 124, 224) by means of first inserted strip conductors (30a-1 . . . 30a-3, 30b-1, 130, 230) that are guided in bundles and are at least partially integrated into the brush holder (16, 116, 216), wherein the first inserted strip conductors (30a-1 . . . 30a-3, 30b-1 . . . 30b-3, 130, 230) which respectively contact the same magnetic field sensors (18a, 18b, 118a, 218a) extend essentially parallel to one another, wherein the magnetic field sensors (218, 218b) are disposed tangentially to the edge of a recess (221) of the brush holder (216) in order to receive the magnetic wheel (19), that the first inserted strip conductors (230a, 230a, 230b, 230b) have contact ends (240a, 240, 240b, 240b) to the magnetic field sensor (128a, 218b) that are disposed oriented toward the brush holder, that contact strips (242a, 242a, 242b, 242b) of the first inserted strip conductors (230a, 230a, 230b, 230b) are guided between the contact ends (240a, 240, 240b, 240b) and the electronics mounting plate (224) from the edge of the recess (221) to the edge of the brush holder (216) and from the edge of the brush holder (216) onward, extend essentially parallel to the contour of the brush holder (216) or the support (228) and parallel to the plane of the electronics mounting plate (224).