Directional fixing device

A directional fixing device, comprising:

• a base, said base comprising a barrel, an annular portion, a fixing portion for positioning a preset first board member, and a channel formed inside;
• a socket comprising an accommodating cavity set outside said barrel, an operation indication structure formed on a top side thereof, a pointing convex portion protruding from said operation indication structure toward one side and at least one lifting structure recessed inside said operation indication structure, said lifting structure being formed from top to bottom with at least a first positioning groove, a guide ramp and a second positioning groove located at a hollow side wall of said socket;
• a fixing member comprising a rod body passed through said channel of said base, said rod body having a top end thereof exposed in said second positioning groove of said socket and provided with a through hole and an opposing bottom end thereof expanded outward to form a positioning block;
• an elastic member sleeved on the outside of said rod body;
• and
• a sliding member fixed through said through hole of said fixing member with at least one end thereof stopped against said second positioning groove in a movable, repositionable manner to form an extended locking position of the fixing member;
• wherein rotating said operation indication structure of said socket to form an action in which said socket rotates but said base is immovable, and drives said sliding member to move along said guide ramp into said first positioning groove or said second positioning groove, so that said positioning block of said fixing member extends into or out of a fixing hole of a preset second board member to form a locking or unlocking action.