| 摘要 |
A drive shaft moving apparatus of the present invention includes a drive shaft 1 with a screw groove 3 formed in spiral shape, and a nut 5 fitted around the drive shaft 1 and being rotatably supported on a main flame 15 so as to allow the drive shaft 1 to axially move. The apparatus is characterized in that a fixing means 17 is provided on a side of the main flame 15 for preventing the drive shaft 1 from rotating, the fixing means 17 includes a guided member 24 being capable of moving along a guide member 4 formed on the drive shaft 1 in the axial direction, and the guided member 24 is disposed between the nut 5 and the drive shaft 1.
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