Rotary positioning device

A rotary positioning device, comprising a base, a fixing seat, a rotation unit and an elastic member, wherein:

• said base comprises a base body, a shaft extended outward from one side of said base body, and a stopper provided on one side of said shaft opposite to said base body;
• said fixing seat comprises an accommodating space inside to be assembled on an outside of said shaft and said stopper of said base in a movable alignment, an opening provided on one side of said accommodating space and penetrating outwards, an adjacent protruding shaft portion and a clamping portion located outside said opening, two horizontal through-holes respectively located on two opposite sides of said accommodating space, and a movable positioning body respectively placed in each said horizontal through-hole;
• said rotation unit is assembled outside said fixing seat, said rotation unit comprising a driving member assembled inside said opening of said protruding shaft portion and a rotating member combined with an outside of said driving member, said driving member comprising a rotating shaft for being movably installed at said opening inside said protruding shaft portion and a connecting portion with enlarged outer diameter located on one side of said rotating shaft, said rotating member comprising a rotating space inside, a connecting portion provided on one side of said rotating space and penetrating outward and used for connecting and positioning said connecting portion on one side of said rotating shaft, two inner shoulders respectively located on two opposite walls on one side of said rotating space that rotate and resist or retreat from two sides of said clamping portion and two pushing portions respectively provided adjacent to said inner shoulders to press the respective each said movable positioning body for lateral displacement in each said horizontal through-hole;
• said elastic member is placed between said clamping portion of said fixing seat and said connecting portion provided on one side of said rotating space.