Full-automatic single bolt lock body with a built-in motor

A full-automatic single bolt lock body, comprising a lock case, a lock bolt and a drive unit;

• wherein an end of the lock case is provided with a lock bolt hole for extending and retracting the lock bolt;
• wherein the drive unit is mounted in the lock case and is connected to the lock bolt;
• and
• wherein the drive unit comprises a built-in motor, the built-in motor is mounted at a rear side of the lock bolt, an axial direction of the built-in motor is in the same direction as a telescopic movement of the lock bolt, and the lock bolt realizes actions of extending and retracting the lock bolt hole based on a rotation of the built-in motor;
• wherein the drive unit further comprises a rotating shaft connected to the built-in motor, a drive spring for driving and controlling a movement of the lock bolt, and a reset spring for elastic extension return after the lock bolt has retracted;
• wherein an outer side of the rotating shaft is provided with a guide post projecting along a radial direction;
• wherein one end of the drive spring is sleeved on the outer side of the rotating shaft, the guide post passes through a pitch of the drive spring and is movably fitted with the drive spring, the other end of the drive spring is connected to the lock bolt in a restricted manner, and the reset spring rests against the rear side of the lock bolt.