Blister protection sleeve including automatic locking means that can be unlocked by torsion

A protective case (10) of a blister card (12) containing medication, said protective case comprising:

• a horizontal drawer (14) which comprises a support (30, 34) supporting the blister card (12);
• a sheath (16) inside which the drawer (14) is mounted so as to slide longitudinally between a closed position in which the blister card (12) cannot be accessed and an open position in which the blister card (12) can be accessed;
• and
• first locking element for locking the drawer (14) in the closed position which comprise at least a transverse first immobilization face (54) which is supported by the drawer (14) and which is designed to be arranged against a second transverse face (56) for immobilizing the sheath (16) when the drawer (14) is in the closed position in order to prevent the drawer (14) from sliding to its open position;
• the first immobilization face (54) being arranged on a section (32) of the drawer (14) which is mounted so as to pivot relative to the support (30) supporting the blister card (12) of the drawer (14) about a longitudinal axis (A) between an angular locked position in which the first immobilization face (54) is opposite the second immobilization face (56) when the drawer (14) is in the closed position and to which the pivoting section (32) is elastically returned, and an angular unlocked position in which the first immobilization face (54) is offset in a vertical transverse plane relative to the second immobilization face (56) in order to allow the drawer (14) to slide to its open position;
• wherein at least one of the immobilization faces (54) is supported by a locking tab (58) that is elastically deformable so that the locking takes place by elastic snap-fitting of the tab (58) behind the other immobilization face (56), the pivoting section (32) of the drawer (14) being in an angular locked position, and
• wherein the pivoting end section (32) of the drawer (14) is connected to the support (30) supporting the blister card (12) by an intermediate section (64) that is torsionally elastically deformable.