| 摘要 |
PURPOSE:To make the manufacturing, working, assembling and disassembling of a rotary polyhedron mirror device extremely easy, by fitting an assembled rotary body equipped with a motor rotor and polyhedron mirror to a fixed shaft from the outside, and arranging a motor driving coil to the upper side of the polyhedron mirror. CONSTITUTION:An assembled rotary body 48 is constituted in such a way that a rotary member 38 is fitted from the outside to a fixed shaft 38 which is fixed with pressure in a motor housing 34 with a clearance of 3-6mum under a rotation-free condition and a motor 42 and polyhedron mirror 31 are fitted to the rotary member 38. A motor stator 47 equipped with a motor driving coil 46 is arranged to the upper side of the polyhedron mirror 31. Since this rotary polyhedron mirror device has such a structure, this can be manufactured and worked easily and, at the same time, since the driving coil 46 and fixed shaft 33 can be separated in opposite directions against the assembled body 48, this device can be assembled and disassembled extremely easily without requiring any long time service of an expert. |
