Four pole direct current commutator motor for use in e.g. electric motor for adjusting component of vehicle seat, has armature windings and commutator attached to motor shaft, and brushes short-circuiting adjacent laminates simultaneously

摘要

The motor (1) has a commutator with laminates (7), which are distributedly arranged in a peripheral direction. Two brushes (8) rest against the laminates for supplying current to armature windings and for receiving ripple current signals generated in the armature windings. A motor shaft and a set of magnets (3) form a four-pole magnetic field, and the armature windings and the commutator are attached to the motor shaft as a rotatable rotor. The brushes short-circuit two adjacent laminates simultaneously.