| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a low frequency vibration seat which is applied with a low frequency vibration structure which can raise sitting comfortableness (riding comfortableness) further. <P>SOLUTION: A torsion bar 51 and coil springs 52 are serially connected as spring members of different spring rate through arms 53 and a support frame 54 to support a sheet support member 60 resiliently, and a contact part with the human body in the upper part of the sheet support member 60 is provided with a seat cushion material which is equipped with spring characteristics approximated to the load of the muscles of the human body-flexible characteristics (spring characteristics). Therefore, though the structure described above is very simple, the structure can be provided with the spring characteristics which functions when human's load is supported and the spring characteristics which functions when vibration is removed, both of which characteristics are different from each other. In other words, while the spring characteristics which functions when human's load is supported is provided, the spring constant which functions can be small when vibration is removed, and high functionality for removing especially high frequency component is provided. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
