CARRIAGE INCORPORATING LINEAR MOTOR

PURPOSE:To make the whole of a device small-sized by constituting a carriage itself of a linear motor. CONSTITUTION:Bearings 12 and 13 are provided in both end parts of a guide part 3a of a carriage part, and the guide part 3a is so attached that it can be moved along a guide rail 4. The tip part 3c of the guide part 3a is a part engaged magnetically with permanent magnets 10a and 10b and is formed cylindrically, and a coil 14 wound around this tip part 3c is provided. When a DC current is flowed to the coil 14 on a basis of a signal generated certainly from a track of a disc or another reference, force acts upon the coil 14 in the permanent magnet circuit in the axial direction of the guide rail 4 in accordance with the Fleming's rule, and the carriage 3 is guided along guide rails 4 and 5 and is moved in the direction of an arrow 30 in accordance with the direction of the DC current flowed to the coil 14.