Hand-held device, in particular a writing instrument, provided with a blocking device

A hand-held device comprising a first portion and a second portion, the first portion being engaged at least in part with the second portion while being movable in translation in an axial direction relative to the second portion, the first portion presenting a first distal end while the second portion presents a second distal end opposite from the first distal end in the axial direction, and a blocking device configured to prevent the first portion from moving in translation in the axial direction relative to the second portion only when, considered in the gravity direction, the first distal end is arranged above the second distal end, the blocking device comprising a chamber and a ball housed in the chamber, a wall defining a volume of the chamber presents a receptacle configured to receive all or part of the ball when, considered in the gravity direction, the first distal end is arranged above the second distal end, the blocking device comprising an abutment configured to cooperate with the ball when, considered in the gravity direction, the first distal end is arranged above the second distal end, the receptacle being made in a wall forming part of a portion selected from the first portion and the second portion, whereas the abutment is secured to the other portion from among the first portion and the second portion.