Unfolding and locking structure for sliding rail

An unfolding and locking structure for a sliding rail, the sliding rail comprising an outer rail, a middle rail and an inner rail connected successively, wherein an outer side end of the middle rail and an inner side end of the inner rail are locked and connected via a locking mechanism after the unfolding, and an inner side of the inner rail which is provided adjacent to the middle rail is provided with an unlocking mechanism for releasing a locked state of the middle rail and the inner rail;

• the locking mechanism comprises an inner rail unfolding lock and a baffle;
• the baffle is provided at an outer side end of the middle rail, and protrudes from the middle rail and is provided vertically towards the inner rail, one side of the middle of the inner rail unfolding lock is provided with a rectangular clamping groove clamped with the baffle, a limiting groove is provided in the middle to limit a rotation angle of the inner rail unfolding lock, a resilient member is provided at the other side of the middle to drive the inner rail unfolding lock to move towards the baffle, one end of the inner rail unfolding lock is connected to the inner side end of the inner rail in a resilient rotation manner via a pin shaft and a resilient member, and the middle rail is locked with the inner rail when the baffle is clamped in the clamping groove;
• the unlocking mechanism comprises a push rod slidably connected to the inner rail, one end of the push rod cooperates with a driving part of the inner rail unfolding lock, and the other end extends to the outer side end of the inner rail;
• the push rod pushes the driving part to rotate the inner rail unfolding lock towards the resilient member;
• and the baffle is disengaged from the clamping groove to unlock the middle rail and the inner rail.