| 摘要 |
PROBLEM TO BE SOLVED: To prevent breakage of a disk spring caused by an excessive load. SOLUTION: A sprinkler head 1 is equipped with a head body 10 having a water discharging tube 16 in the inside, a frame 20 connected to the head body, a valve body 30 provided in the frame for closing a water discharging opening 12 of the water discharging tube, a thermosensitive part 51 for supporting the valve body, and the disk spring 64 provided between the valve body and the thermosensitive part. A set screw 65 coupled to the thermosensitive part is provided below the valve body, and the set screw is inserted into a through-hole in the center of the disk spring. The set screw comprises a head part and a leg part, and a height of the head part is formed to be larger than that of a plurality of the layered disk springs. COPYRIGHT: (C)2011,JPO&INPIT
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