Slide rail self-return mechanism

A slide rail self-return mechanism, comprising:

• a holder base comprising a base block, a guide plate extending from one side of said base block, two sliding rails longitudinally extending along two opposite lateral sides of said guide plate, a sliding groove longitudinally defined in said guide plate and abutted to said base block, a mounting groove longitudinally forwardly extending from a front end of said sliding groove remote from said base block and disposed in communication with said sliding groove, an insertion hole located on a front end of said guide plate in communication with a front end of said mounting groove opposite to said sliding groove, and a stop block disposed between said sliding groove and said mounting groove and defining a front sloping guide surface that slopes downwardly forwardly into said mounting groove and a rear stop surface that is abutted to said front end of said sliding groove;
• a sliding seat comprising two sliding rails respectively disposed at two opposite lateral sides thereof in a parallel manner, an accommodation chamber defined therein between the two sliding rails of said sliding seat, and two displacement grooves respectively defined in the sliding rails of said sliding seat to face toward said accommodation chamber and respectively coupled with the sliding rails of said holder base for allowing said sliding seat to slide on said holder base;
• and
• a biasing member comprising a body pivotally mounted in said accommodation chamber of said sliding seat, and a position-limiting block located at said body and mounted in said sliding groove of said holder base.