| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sprinkler head accessory such as a sealing plate and a cover plate which covers over a portion between a sprinkler head and a hole in a ceiling board, and which can transmit heat due to fire to a heat sensitive part of a sprinkler head that is arranged in the sprinkler head accessory in case of a fire. <P>SOLUTION: The sprinkler head accessory includes: a cylindrical retainer R1 having in the lower end the cover plate 21 that falls down in case of a fire; and a cylindrical support cup C installed in the outside of the sprinkler head S1. A plurality of holes 27 are drilled in the cylinder part 26 of the retainer R1. By the holes 27 and an engaging part (projection 12) provided in the cylinder part of the support cup C, the sprinkler head accessory is configured to be connected to the sprinkler head S1. <P>COPYRIGHT: (C)2012,JPO&INPIT |
