SOUND ABSORPTION STRUCTURE FOR AUTOMOBILE

摘要

PROBLEM TO BE SOLVED: To easily construct a sound absorbing structure and to efficiently absorb road noise. SOLUTION: A plate material 10 for forming a sound-absorption space S1 outside a cabin 3 is provided between a vehicle body 2 and itself. A sound-absorption material 50 arranged in the sound-absorption space S1 is provided. The plate material 10 has: a fixed part 11 fixed to the vehicle body 2 along at least a part of its outline; and a vibration part 12 being a portion continued to the fixed part 11 and having flexibility for performing fine vibration by wave motion of a low frequency. The sound-absorption material 50 is arranged in a position facing the vibration part 12. COPYRIGHT: (C)2007,JPO&INPIT