Door latch device

Abstract

A door latch device includes an open link and a ratchet lever. The open link includes: a lever body; an inertia lever; and a release biasing member. Further, the inertia lever is capable of transmitting an operating force to the ratchet lever only when the door handle is opened when the lever body is disposed at the unlocked position and disposed at the operating position, and, between the lever body and the inertia lever, there are included a shifting biasing member that shifts the inertia lever to a shift position with respect to the lever body in a movement mode different from rotation that takes place when the inertia lever rotates to the sensing position and regulating members that prevent the inertia lever from moving from the shift position to the operating position across the sensing position when the inertia lever is shifted to the shift position.