| 摘要 |
PROBLEM TO BE SOLVED: To provide a vibration control floor structure for a railroad vehicle capable of reducing noise in a cabin space, and ensuring good seating comfort of a seat by preventing walking vibration of a passenger coming and going in a passage portion from transmitting to a seat installing portion. SOLUTION: Cabin floor plates 7a, 7b are divided into the cabin floor plate 7b of the seat installing portion, the cabin floor plate 7a of the passage portion, and the cabin floor plate 7b of the seat installing portion, in a vehicle body width direction from an end. The level of noise generated from the cabin floor plates 7a, 7b in the cabin space 12 is large from the passage portion as compared with the seat installing portion, so that the cabin floor plate 7a of the passage portion is supported by a vibration controlling member 6a with low hardness to reduce noise in the cabin space 12. The vibration controlling member 6a of the passage portion has low hardness, so that the cabin floor plate 7a of the passage portion is easy to vibrate due to walking vibration of the passenger and the like. However, the cabin floor plate 7a and the cabin floor plate 7b of the seat installing portion are separated, so that vibrations of the cabin floor plate 7a of the passage portion are prevented from transmitting to the cabin floor plate 7b of the seat installing potrion, thereby keeping good seating comfort. COPYRIGHT: (C)2006,JPO&NCIPI
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