Middle and inner rails synchronization mechanism of slide rail

A middle and inner rails synchronization mechanism of a slide rail, the slide rail having a three-stage telescopic structural design that comprises an inner rail, a middle rail and an outer rail, and the middle and inner rails synchronization mechanism comprising:

• an installation part, integrally formed at a rear position of the middle rail;
• an elastic control plate, comprising a pivoting part disposed at an end thereof, an elastic part disposed in middle of the elastic control plate and provided to be installed to the installation part such that the elastic control plate is disposed on a surface of the middle rail relative to the inner rail, a retaining wall formed by bending a side edge of the elastic control plate relative to the pivoting part, a guide surface and a stop surface integrally formed on the retaining wall corresponding to a direction when the inner rail passes through, a first set angle defined between moving tracks of the stop surface and of the middle rail, and a second set angle defined between moving tracks of the guide surface and the middle rail;
• a synchronization hook, installed on a surface of the inner rail relative to the middle rail, configured to protrude from the surface by bending, and snapped with the elastic control plate to define a synchronization state, such that after the middle rail is moved to a limit and a specified force is applied, the synchronization hook props open the elastic control plate, and the inner rail continues to be pulled towards outside;
• and
• an inner rail releasing outer rail locking hook formed on a side of the elastic control plate opposite to the retaining wall, and bent in a direction opposite to a direction that the retaining wall is bent, such that the inner rail releasing outer rail locking hook passes through another surface of the middle rail, and the outer rail comprising an outer rail release part disposed at a position proximate to an outer side along pulling direction, so that after the inner rail releasing outer rail locking hook is triggered by the outer rail release part to push the inner rail releasing outer rail locking hook to swing, a locked state between the middle rail and the inner rail is released, and the middle rail and the inner rail are sequentially pulled towards outside.