Push-push apparatus for installing and removing hard disk

A push-push apparatus comprising:

• a bracket comprising a carrying plate and two lateral plates fixed to two opposite sides of the carrying plate, one of the lateral plate defining a first sliding slot, a second sliding slot, a third sliding slot and a fourth sliding slot communicating with each other end to end, one of the lateral plate comprising a blocking portion and a resisting portion;
• a pressing member comprising a pressing portion and two sliding plates extending from two ends of the pressing portion and slidably fixed to the two lateral plates, one of the sliding plate comprising a stopping portion and a pushing portion;
• a locking member disposed at an ending point of the second sliding slot;
• an elastic member fixed to the sliding plate and the bracket;
• an elastic rod fixed to one of the sliding plate and comprising a sliding portion;
• wherein the pressing member is pressed to drive the sliding portion to slide along the first sliding slot and deform the elastic member and the elastic rod, when the sliding portion slides along the first sliding slot to an ending point the first sliding slot intersected to the second sliding slot, the pushing portion abuts against the blocking portion to drive the bracket to move at a first direction;
• the deformed elastic member and the deformed elastic rod drive the sliding portion to slide along the second sliding slot until the sliding portion is locked by the locking member;
• the pressing member is pressed again to drive the sliding portion to slide along the third sliding slot, the sliding portion is further slidable along the third sliding slot, the fourth sliding slot and the first sliding slot in sequence under force of the deformed elastic member and the deformed elastic rod;
• when the sliding portion is positioned at a starting point of the first sliding slot away from the fourth sliding slot, the stopping portion abuts against the blocking portion to drive the bracket to move at a second direction opposite to the first direction.