| 摘要 |
PROBLEM TO BE SOLVED: To provide a catch fork capable of stably and surely performing opening and closing movement of an arm with enhanced durability. SOLUTION: This catch fork is provided with a pair of arms 16 and a shaft 14, a base part of the arm 16 is journaled to an end of the shaft 14, an end of the arm 16 can be opened and closed, and the catch fork is provided with a spring 20 for energizing the pair of the arms 16 to the opening movement direction to which ends thereof are opened, a stopper 22 arranged in the shaft 14 so as to be able to slide along the axial direction, and a spring 24 for energizing the stopper 22 to the direction intruding into the base part of the arms 16. The stopper 22 intrudes into the base part of the pair of the arms 16, and is abutted to the base part, and thereby a predetermined opened angle of the arm 16 is maintained, and opening and closing movement of the arm 16 is prevented. COPYRIGHT: (C)2006,JPO&NCIPI
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