Direction and speed control device for a motor vehicle

A direction and speed control device for a motor vehicle, comprising:

• a casing adapted to be mounted fixedly on the motor vehicle;
• a sensing unit mounted in said casing and including a magnetic sensor;
• and
• a magnet assembly including
• a pivot axle mounted rotatably on said casing and having a magnet carrying portion extending into said casing, and a driven portion extending from said magnet carrying portion and disposed outwardly of said casing, and
• first and second magnets mounted on said magnet carrying portion of said pivot axle and disposed on opposite sides of said magnetic sensor;
• said driven portion of said pivot axle being operable externally of said casing for driving rotation of said pivot axle relative to said casing so as to move one of said first and second magnets toward said magnetic sensor and so as to move the other one of said first and second magnets away from said magnetic sensor;
• said sensing unit being adapted to generate a control output for controlling movement of the motor vehicle in one of an advancing direction and a reversing direction and for controlling moving speed of the motor vehicle in said one of the advancing and reversing directions in accordance with displacement of said first and second magnets relative to said magnetic sensor.