Connector assembly with improved latch

An electrical connector assembly comprising:

• first and second connectors head to head locking to each other;
• said first connector defining a first insulative housing unitarily formed with thereon a deflectable latch extending in a cantilevered manner to be adapted to be upwardly deflected at a front end, said latch including a hook structure at said front end thereof, said hook structure including a front downward inclined surface facing forward and a rear upward inclined surface facing rearward, said front downward inclined surface and said rear upward inclined surface both located adjacent to a locking tip area of the hook structure, and
• said second connector defining a second insulative housing unitarily formed with a locking projection, said locking projection including a front upward inclined face for engagement with the front downward inclined surface of the hook structure at an initial locking stage, and a rearward downward inclined face for engagement with the rear upward inclined face of the hook structure at a final locking stage.