Dry powder inhaler and inhalation actuated mechanism thereof

A powder inhaler, comprising:

• a container for storing a powdered medicament;
• a metering member having a dosing recess to be filled with a dose of the powdered medicament from the container;
• a mouthpiece being in communication with an inhalation channel for enabling inhalation of the dose of the powdered medicament contained in the dosing recess of the metering member;
• and
• an inhalation actuated mechanism which is coupled to a protective member for the dosing recess of the metering member such that, if the protective member is in a closed position in which it at least partly covers the dosing recess, the inhalation actuated mechanism causes the protective member to move to an open position, in which the protective member does not cover the dosing recess, if an inhalation suction force exerted by a user on the inhalation channel exceeds a predetermined value;
• wherein the inhalation actuated mechanism comprises a flap comprising:
• a base member comprising a plate-shaped flat portion;
• a skirt structure projecting upward from a surface of the base member;
• and
• a coupling portion to be coupled to a resilient member of the inhalation actuated mechanism, wherein:
• the skirt structure comprises first side wall portions, which substantially extend in a longitudinal direction of the base member,
• a second side wall portion which extends between the first side wall portions in a width direction of the base member, and
• the coupling portion projects from a lower surface of the base member downward.