| 摘要 |
PROBLEM TO BE SOLVED: To use a housing as a common component. SOLUTION: An operation rod 8 is vertically movably inserted into a cylindrical housing 3. One end in the longitudinal direction of a clamp arm 19 is vertically swingably connected to the upper part of the operation rod 8 and the mid part in the longitudinal direction of the clamp arm 19 is swingably connected to the upper part of a link member 20. As for the clamp arm 19, a plurality of clamping positions are set around the operation rod 8 at prescribed rotation angles apart. A female screw hole 24 vertically extending into the upper wall 3a and the trunk part 3c of the cylindrical housing 3 and opened to the upper surface of the upper wall 3a is formed in the lower part of the link member 20 in either clamping position out of the plurality of clamping positions. The head part 27 of the connecting bolt 25 threaded with the screw hole 24 is swingably connected to the lower part of the link member 20. COPYRIGHT: (C)2004,JPO
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