Overload protection for a lock structure

A lock structure is provided for use with a dispenser comprising a housing have an interior volume for holding a dispensable product, the housing having an openable part for providing access to the interior of the housing. The lock structure has a lock housing, a latch operable between a locked position and an unlocked position, a lock cylinder structure comprising a rotation means insert portion, and a resilient member for biasing the latch toward the locked position. The lock structure is provided with an overload protection mechanism formed by a resilient obstruction positioned to define an extreme position that corresponds to the locked or unlocked position of the latch and is adapted to give way upon experiencing an overload force to allow the lock cylinder structure to rotate beyond the extreme position.