Joint fixation mechanism for leg support member

A joint fixation mechanism for a leg support member including a joint portion for angle adjustment arranged between a leg base portion and the leg support member of an imaging equipment-grade tripod, the joint portion comprising:

• a joint fixation member including a tapered portion on an lower inner side, the joint fixation member including a joint above the tapered portion;
• a pole member having a lower end connected to the leg base portion and an upper end connected by the joint of the joint fixation member;
• a sleeve provided below the joint fixation member, the sleeve having a space therein, the sleeve having an insertion hole at an uppercentral part through which the pole member is inserted, the sleeve having a fitting tapered portion around the insertion hole for fitting to the tapered portion of the joint fixation member, the sleeve being formed with an operation portion protruding outward from a side surface;
• and
• a coil spring for pressing the sleeve upward, the coil spring being wound around a central axis of the pole member in the space of the sleeve,
• wherein
• with the joint portion being fixed by fitting between the tapered portion of the joint fixation member and the fitting tapered portion of the sleeve, the joint portion is released as the sleeve is pressed downward so that the fitting between the tapered portion of the joint fixation member and the fitting tapered portion of the sleeve is released.