Hinge assembly

A hinge assembly comprising:

• a first swinging member, said first swinging member comprising a plurality of wing plates arranged at two opposite lateral sides of a proximal end thereof, and a plurality of first through holes and second through holes transversely cut through said wing plates;
• a second swinging member, said second swinging member comprising a barrel transversely and fixedly disposed at a proximal end thereof, said barrel comprising two through holes respectively disposed at two opposite ends thereof and an oblique guide slot which is arranged obliquely in the direction of an axis of said barrel and cut through the periphery thereof;
• a guide member, said guide member comprising a first end, a second end opposing said first end inserted through said oblique guide slot into the inside of said barrel, a screw hole transversely extending through said first end, and a through hole transversely extending through said second end;
• a pivot pin inserted through two said first through holes of said wing plates of said first swinging member and the through holes of said barrel and the through hole of said guide member to pivotally secure said first swinging member and said second swinging member and said guide member together;
• and
• an adjustment screw inserted through two said second through holes of said wing plates of said first swinging member and threaded into the screw hole of said guide member and rotatable to bias said second swinging member relative to said first swinging member.