Tying tool

A tying tool configured to tie a tying target using a wire, comprising:

• a housing that defines a housing space for housing a reel and supports the reel housed in the housing space such that the reel is rotatable about a predetermined reel rotation axis, wherein the reel comprises the wire and a bobbin around which the wire is wound;
• a cover member attached to the housing such that the cover member is rotatable about a predetermined cover rotation axis, wherein the cover member is movable between an open position where the cover member opens the housing space and a closing position where the cover member closes the housing space;
• and
• a lock mechanism configured to lock the cover member in the closing position,
• wherein
• the lock mechanism comprises:
• a protrusion disposed on one of the housing and the cover member;
• a lock member attached to another of the housing and the cover member, wherein the lock member is movable between a lock position where the lock member interferes with the protrusion when the cover member moves from the closing position to the open position and an unlock position where the lock member does not interfere with the protrusion when the cover member moves from the closing position to the open position;
• and
• a lock biasing member configured to bias the lock member toward the lock position,
• at least one of the protrusion and the lock member comprises an inclined surface that is inclined relative to a direction in which the cover member moves from the open position to the closing position, and
• when the cover member moves from the open position to the closing position, the protrusion pushes the lock member via the inclined surface so that the lock member is moved from the lock position to the unlock position against a biasing force of the lock biasing member.