| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ceiling hanging type quake reducing device capable of preventing the breakage of a hanging bolt even when an earthquake occurs. <P>SOLUTION: The ceiling hanging type quake reducing device 10 is composed of a quake reducing device body 12 and an elastic body 14. The elastic body 14 includes: an upper side elastic body 14a which has a diameter larger than that of an elastic body attachment hole 12c and is arranged on the upper surface side of an upper side piece 12a; a lower side elastic body 14b which has a diameter larger than that of an elastic body attachment hole 12c and is arranged on the lower surface side of the upper side piece 12a; and a connection member 14c which connects the upper side elastic body 14a and the lower side elastic body 14b and is arranged in the elastic body attachment hole 12c. On the elastic body 14, there is formed a bolt insertion hole 14d to the lower end part of the lower side elastic body 14b from the upper end part of the upper side elastic body 14a, and the upper surface of the lower side elastic body 14b in contact with the upper side piece 12a is formed in a convex curved shape toward the upper side piece 12a. <P>COPYRIGHT: (C)2013,JPO&INPIT |
