Patent ID: 8466590

Claim:
A brushless direct current motor comprising: a) a rotor having permanent magnets, which rotates in a commutation created alternating magnetic field of a stator ( 1 ), b) with the magnetic field being created by a coil system of electric wire coils ( 3 ) arranged in a circumferential direction spaced apart from each other on an insulating body ( 4 ), c) with control electronics being provided for controlling the electric wire coils, spaced apart from each other, of the coil system provided in the stator ( 1 ), d) non-contact rotary position sensors ( 5 ) being allocated to phases of the coil system ( 2 ), e) the rotary position sensors ( 5 ) are arranged on a sensor carrier ( 13 ), the stator has end faces and the sensor carrier ( 13 ) is fastened on one of the end faces of the stator ( 1 ), and f) positioning aids, cooperating with each other, are provided between the sensor carrier ( 13 ) and an adjacent one of the stator faces, the positioning aids determine a relative position of the stator ( 1 ) in reference to the sensor carrier ( 13 ) and the rotary positioning sensors ( 5 ) arranged thereupon, g) the control electronics are connected to supply lines ( 15 ) of the wire coils ( 3 ) that are spaced apart from each other, via electric contacts embodied as the positioning aids, h) the electric contacts embodied as the positioning aids are provided on the sensor carrier ( 13 ) and comprise cutting terminals ( 14 ), i) the sensor carrier ( 13 ) upon which the rotary position sensors ( 5 ) allocated to phases of the coil system ( 2 ) are arranged is a single sensor carrier ( 13 ), j) the supply lines ( 15 ) of the wire coils ( 3 ), spaced apart from each other, are held with wire sections thereof contacting the cutting terminals ( 14 ) in wire guides ( 16 ) of the stator ( 1 ) that define part of the positioning aids, k) the stator ( 1 ) comprises a sheath-like stator housing ( 20 ), with an insulating cap ( 9 ) being provided at each of the faces, with at least one of the insulating caps ( 9 ) being connected to the sensor carrier ( 13 ), l) the insulating caps ( 9 ) provided at both sides of the stator ( 1 ) carry between each other the wire coils ( 3 ), spaced apart from each other, of the multi-phase coil system ( 2 ) of the stator ( 1 ), and m) the at least one of the insulating caps ( 9 ) that is connected to the sensor carrier ( 13 ) comprises protrusions ( 16 , 19 ) that are crown-shaped, and meandering wires of the wire coils ( 3 ) extend at least partially around each of the protrusions ( 16 , 19 ) , with at least individual ones of the protrusions ( 16 , 19 ) being embodied as the wire guides ( 16 ).