A subassembly of a medicament delivery device

A subassembly of a medicament delivery device for delivering a medicament from a medicament container to a human or animal patient, the medicament delivery device extending axially and having, at a proximal end, a medicament delivery element through which the medicament can be delivered to the patient, wherein the subassembly comprises:

• a cover structure configured to surround the medicament delivery element and having a first latching element, the cover structure being movable along the axial direction from a proximal first extended position to a distal retracted position and to a proximal second extended position, in order to cover the medicament delivery element in the first extended position before medicament delivery and in the second extended position after medicament delivery and to expose the medicament delivery element in the retracted position during medicament delivery;
• and
• a retaining structure having an envelope surface arranged radially outside of the cover structure and having a second latching element,
• wherein in the first extended position, the first latching element is out of engagement and positioned distally with respect to the second latching element,
• wherein in the second extended position, the first latching element is in mutual engagement with respect to the second latching element, such that the cover structure is prevented from moving towards the retracted position, and
• wherein in the second extended position, the envelope surface covers or surrounds the first latching element and/or the second latching element, in order to prevent disengagement of the first latching element and the second latching element by a user.