Impact-absorbing device and structure for blocking noise between floors by using same

Abstract

An impact-absorbing device and a structure for blocking noise between floors by using same are proposed. The impact-absorbing device has a body (100) including an upper cylinder (120), of which the inside is empty and which has an opening opened downward, and a lower container (140), of which the upper end is inserted into the upper cylinder (120), so that the length thereof can extend and contract has an elastic support (160) formed in the transverse direction inside the upper cylinder (120) and/or the lower container (140), and includes a transmitting body (180), which is supported by the elastic support (160) so as to transmit, to the elastic support (160), impact applied to the upper cylinder (120), and thus impact is absorbed since the elastic support (160) is elastically deformed by the transmitting body (180) while the length of the body (100) is reduced due to the impact.

1 . An impact-absorbing device comprising:
 a body ( 100 ) comprising an upper cylinder ( 120 ), of which an inside space is empty and that has an opening opened downward, and a lower container ( 140 ), of which an upper end is inserted into the upper cylinder ( 120 ), so that the length thereof is extendable and contractible; and   an elastic support ( 160 ) formed in a transverse direction inside at least any one of the upper cylinder ( 120 ) and the lower container ( 140 ) and a transmitting body ( 180 ) configured to be supported by the elastic support ( 160 ) and transmit an impact applied to the upper cylinder ( 120 ) to the elastic support ( 160 ),   wherein when an impact is applied to the upper cylinder ( 120 ), the length of the body ( 100 ) is reduced, and thus the elastic support ( 160 ) is elastically deformed by the transmitting body ( 180 ) to absorb the impact.   
     
     
         2 . The impact-absorbing device of  claim 1 , wherein the elastic support ( 160 ) is made of a steel wire. 
     
     
         3 . The impact-absorbing device of  claim 1 , wherein the transmitting body ( 180 ) has a cylindrical or spherical shape, and having has a groove ( 182 ) formed on a portion in contact with the steel wire so that the steel wire is fitted into the groove ( 182 ). 
     
     
         4 . The impact-absorbing device of  claim 1 , wherein at least any one of the upper cylinder ( 120 ) and the lower container ( 140 ) has a through hole ( 104 ) so that air flows through the through hole ( 104 ) during an extending and contracting process. 
     
     
         5 . The impact-absorbing device of  claim 1 , wherein a sound-absorbing material is filled inside the body ( 100 ). 
     
     
         6 . A structure for blocking noise between floors, the structure comprising:
 a concrete base ( 600 ) and an indoor floor layer ( 400 ) provided above the concrete base ( 600 ) with a predetermined gap; and   an impact-absorbing device of according to  claim 1  provided between the concrete base ( 600 ) and the indoor floor layer ( 400 ),   wherein an impact generated from the indoor floor layer ( 400 ) is absorbed by the impact-absorbing device to block noise between floors.   
     
     
         7 . The structure of  claim 6 , wherein a fastening protrusion ( 102 ) is provided on an upper end of the body ( 100 ) of the impact-absorbing device, and
 a position of the body is fixed as the fastening protrusion ( 102 ) is fitted into the indoor floor layer ( 400 ).   
     
     
         8 . The structure of  claim 6 , further comprising:
 an insulation layer ( 200 ) provided below the indoor floor layer ( 400 ),   wherein the upper cylinder ( 120 ) of the body ( 100 ) of the impact-absorbing device penetrates through the insulation layer ( 200 ).   
     
     
         9 . The structure of  claim 8 , wherein a support plate ( 122 ) is provided on an outer circumference of the upper cylinder ( 120 ), and the support plate ( 122 ) is configured to support the insulation layer ( 200 ). 
     
     
         10 . The structure of  claim 6 , wherein an anti-vibration rubber ( 500 ) is provided on a lower end of the body ( 100 ) of the impact-absorbing device.