Door latch device

A door latch device comprising:

• an open link that shifts between an unlocked state and a locked state and operates when a door handle is opened;
• and
• a ratchet lever that releases an engagement state of a ratchet with respect to a latch when an operation force is applied via the open link,
• so that, in the door latch device, the open link is capable of transmitting an operation force to the ratchet lever when the door handle is opened in the unlocked state,
• wherein the open link includes:
• a lever body that is displaced to an unlocked position corresponding to the unlocked state and a locked position corresponding to the locked state and moves with an opening operation of the door handle;
• an inertia lever that is movable to an operating position, a shift position, and an intermediate position that allows for movement between the operating position and the shift position, the inertia lever being movable to the intermediate position by relatively rotating with respect to the lever body about an axis;
• and
• at least one biasing member that biases the inertia lever in a rotation direction such that the inertia lever is maintained at the operating position with respect to the lever body, wherein
• the inertia lever is capable of transmitting an operating force to the ratchet lever only when the door handle is opened in a state where the lever body is disposed at the unlocked position and disposed at the operating position, and
• between the lever body and the inertia lever, the at least one biasing member shifts the inertia lever to a shift position with respect to the lever body in a movement mode different from and in a different plane than rotation that takes place when the inertia lever rotates to the intermediate position against a biasing force of the at least one biasing member, wherein regulating members prevent the inertia lever from moving from the shift position to the operating position without rotating to the intermediate position by facing to each other along the axis when the inertia lever is shifted to the shift position by the at least one biasing member.