Aparelho e processo para levantar e e abaixar o vidro de janela para um veículo

摘要

An apparatus for accurately lifting up and down window glass for a vehicle up to a desired position by using a jog shuttle member (12). The apparatus includes a reversible motor (40) rotating clockwise and counterclockwise according to a polarity of a supply voltage. A window glass position detector (42) senses a revolution number of the reversible motor (40) to generate window glass position data. A jog shuttle member (12) mounted on an armrest detects a revolution angle of a rotatary switch (16) thereof to generate position control data corresponding to the revolution angle. A microprocessor (36) compares current position control data with previous position control data to generate a rotational direction control signal and a driving signal for the reversible motor (40), and completes generation of the rotational direction control signal and the driving signal when the window glass position data corresponds to the current position control data from the jog shuttle member. Then, a motor driver (38) provides the reversible motor with a driving voltage corresponding to the rotational direction control signal and the driving signal. Thus, the window glass may be automatically accurately lifted up and down up to a desired position according to the revolution angle of the rotary switch of the jog shuttle member.