Automatic lock system for vehicle hitch assembly

A hitch coupler, comprising:

• a frame member including a top plate, a bottom plate and a middle plate disposed between the top plate and the bottom plate, each plate extending outwardly from the frame member and each plate further including a pin receiving aperture disposed thereon;
• a pin member having a pin housing and a handle portion, the pin housing slidably received within the pin receiving apertures such that the pin member is slideable between an extended position and a retracted position;
• a guide slot disposed along a portion of the pin housing;
• a guide member extending laterally from the top plate, wherein the guide member is adapted to be slidably received within the guide slot of the pin housing to guide the pin member between the extended position and the retracted position;
• a lock mechanism pivotally coupled to the frame member, the lock mechanism moveable between a locked position and an unlocked position;
• and
• wherein the lock mechanism is adapted to align with and engage the guide slot of the pin housing when the pin member is in the extended position to retain the pin member in the extended position.

A hitch coupler, comprising:

• a frame member including a plurality of vertically spaced apart plates extending outwardly therefrom, each plate having a pin receiving aperture disposed therethrough;
• a pin member having a pin housing, the pin housing slidably received within the pin receiving apertures such that the pin member is slideable between an extended position and a retracted position;
• a guide slot disposed vertically along a portion of the pin housing;
• a guide member extending laterally from the frame member, wherein the guide member is substantially disposed within an upper pin receiving aperture and adapted to be slidably received within the guide slot of the pin housing to guide the pin member between the extended position and the retracted position;
• a lock mechanism pivotally coupled to the frame member, the lock mechanism moveable between a locked position and an unlocked position;
• and
• wherein the lock mechanism is adapted to align with and engage the guide slot of the pin housing when the pin member is in the extended position to retain the pin member in the extended position.