| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide soundproof structure of a rail, capable of reducing noise generated from a joint part of the rail by a soundproof material in a simple structure. <P>SOLUTION: Soundproof materials 10A and 10B are freely detachably fixed by a fixing member 11 to a soundproof material 14 for reducing noise generated at the joint part of rails 6A and 6B and covering the rails 6A and 6B at the front and back of the joint part with a gap from the side face of the joint part of the rails 6A and 6B. The soundproof materials 10A and 10B are arranged with a prescribed gap between both side faces of the joint part of the rails 6A and 6B and the inner side face of the soundproof materials 10A and 10B, have a sound absorber 10a on the inner side and have a vibration control material 10b on the outer side. When wheels pass through on the rails 6A and 6B at the front and back of the joint part and the rails 6A and 6B are vibrated, since the sound absorber 10a prevents rolling noise from the rails 6A and 6B from being propagated to the vibration control material 10b, the vibrations of the vibration control material 10b are reduced and radiation sound from the vibration control material 10b is reduced. <P>COPYRIGHT: (C)2012,JPO&INPIT |
