Sprinkler head

A sprinkler head comprising:

• a head body having a water discharging cylinder in the interior thereof;
• a frame connected to the head body;
• a valve body configured to close a water discharging port of the water discharging cylinder in the interior of the frame;
• a thermosensitive portion configured to support the valve body;
• and
• a disk spring provided between the valve body and the thermosensitive portion, wherein
• a set screw configured to be coupled to the thermosensitive portion is provided below the valve body,
• the set screw includes a head portion for forming a gap for clamping the disk spring between the valve body and an opposing surface on the side of the thermosensitive portion opposing the valve body,
• a depression allowing insertion of the head portion of the set screw and having a gap which allows an inclining action of the head portion of the set screw at the time of a dismantling operation with respect to the head portion is provided at a bottom portion of the valve body opposing the head portion of the set screw,
• the disk spring is formed with a through hole at the center thereof, and the disk spring is held by inserting the set screw coupled to the thermosensitive portion into the through hole, and
• the through hole of the disk spring is formed such that a smallest diameter of the through hole is the same as or slightly larger than the outer diameter of the head portion of the set screw, the head portion of the set screw having a smooth outer peripheral surface.