To prevent loosening of the expansion leg that is used for the bath room chair or bath tub footstool or the like.
This is an expansion leg which is made of an inner tube and an outer tube and in which a fixing pin is held in a state of being energized toward outside in the fixing pin insertion hole provided on the inner tube, and a plurality of locking holes are provided in the longitudinal direction of the outer tube. A cap is fitted at the top end part of the outer tube and the inner face of the cap is contacted with the outer face of the inner tube, and a plug is fitted at the lower end part of the inner tube, and thereby, loosening of the expansion leg is prevented by making the side face of the top part of the plug which protrudes downward from the inner tube have contact with the inner face of the outer tube. At the same time, a cut-out face that does not have contact with the edge of the locking holes when it moves in the outer tube is provided at the side face of the top part of the plug.
KAWAGUCHI TADASHI
NAKAMURA YOSHINOBU
TANAKA KEIJI
