| 摘要 |
PROBLEM TO BE SOLVED: To reduce the manufacturing cost of a device equipped with two shafts supporting an object such as carriage movably without using any high- torque motor in such an arrangement that they are parallel in the specified direction in compliance with the object movement. SOLUTION: Two shafts are arranged in the specified direction between supporting members for supporting an object movably in the axial direction of the two shaft, and in installing these shafts, at least one of them is positioned on the plane of an opening bored in the supporting members, energized by an energizing means toward the plane of the opening, and is made slidable on the plane against the energizing force exerted by the energizing means.
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