Long slide rail system for vehicle seat

A long slide rail system for a vehicle seat, the long slide rail system comprising:

• a lower rail configured to extend lengthwise along a floor panel of a vehicle, the lower rail configured to be fixedly installed on the floor panel;
• an upper rail coupled to the lower rail and configured to be mounted on a seat cushion, the upper rail configured to enable the seat cushion to be slidably movable along the lower rail;
• a first gear module fixedly mounted on the upper rail, the first gear module configured to be operably connected to a drive motor;
• a second gear module configured to be coupled in an axially rotatable manner to the first gear module, the second gear module including a pinion gear configured to be engaged with a rack gear provided on the lower rail;
• and
• a guide module configured to selectively rotate the second gear module to disengage the pinion gear from the rack gear such that the second gear module is guided and moved by the guide module from a first position corresponding to an electric mode to a second position corresponding to a manual mode.