| 摘要 |
PURPOSE:To avoid the displacement or position shift of a positioning member produced in the directions excepting for the moving direction of the positioning member, by setting two plate springs having satisfactory length and width approximately in parallel with each other between the positioning member to be positioned and its partner member. CONSTITUTION:Two plate springs C and D having satisfactory length and width are wet between a positioning member A to be positioned and its partner member B as if they were put on each other. An end C1 of the spring C is attached to the member A with the other end C2 attached to a displaceable piece E. While an end D1 of the plate D is attached to the member B at a position opposite to the attachment part of the member A set on the member B with the other end D2 attached to the piece E respectively. The member A is driven toward F where the member A is put close to or separated from the member B via a drive means B. Thus the state or posture of the member A has no variation even either the member A gets close to or away from the member B. |
