Hinge assembly

A hinge assembly (100), comprising:

• a hinge rotation body (110), a hinge support body (120) hinge-connected to the hinge rotation body 110, and a locking member (118) provided in the hinge rotation body (110), wherein:
• when the hinge rotation body (110) is hinge-rotated toward the hinge support body (120) side, one side of the locking member (118) is pressed while the other side thereof is lifted so that the hinge-rotated hinge rotation body (110) and the hinge support body (120) are locked together while maintaining the rotated state;
• if pulling the hinge support body (120) from the hinge rotation body (110) in a state that the hinge rotation body (110) and the hinge support body (120) are locked together, the locking of the locking member (118) is released;
• and
• when the locking is released, the hinge rotation body (110) is unfolded from the hinge support body (120) so as to return the hinge rotation body (110) to its original position,
• wherein the hinge rotation body (110) includes:
• a connection member (112) having a bolt connection part (111) provided at a lower end thereof;
• a rotary hinge member (114) that integrally extends from an upper end of the connection member (112) and is provided with a hinge shaft hole (113) at the inner center thereof;
• and
• a locking member receiving part (116) that is provided on one surface of the rotary hinge member (114) and has support grooves (115) at opposing sides thereof,
• wherein the locking member (118) is received in the locking member receiving part (116), locking member shafts (117) seated in the support grooves (115) are provided at both ends opposing sides of the locking member (118), and the locking member (118) is provided to implement seesaw movement in left and right directions by rotation about the locking member shafts, and
• wherein the hinge support body (120) includes a first hinge support member (120a) and a second hinge support member (120b), which are positioned to face each other, bolt-coupled, and hinged to opposing sides of the rotary hinge member (114) in the hinge rotation body (110), respectively,
• wherein the first hinge support member (120a) of the hinge support body (120) includes:
• a locking ball receiving guide (124) which is provided inside the first rotary support part (121) and is formed of a long groove;
• and
• a locking ball (125), which is received in the locking ball receiving guide (124), is moved to the locking member (118) having locking member shafts (117) provided at opposing sides thereof when the hinge rotation body (110) is hinge-rotated and folded toward the hinge support body (120), followed by pressing one side of the locking member (118) to lift the other side of the locking member (118) to thus allow locking, and which is moved toward the other side of the locking member (118) when the hinge rotation body (110) is further pushed toward the hinge support body (120) and further folded toward the hinge support body (120), followed by pressing the lifted other side of the locking member (118) to thus allow unlocking.