| 摘要 |
PROBLEM TO BE SOLVED: To improve riding comfort by optimizing a vibration-proofing characteristic in accordance with a vehicle travelling state, etc. on a seat for a vehicle such as an automobile, etc. SOLUTION: An opening 31 is provided in a rear recessed part 3a on a plate type frame 3 to support a cushion pad 2 of a seat part from below. A bat type fitting 12 is pressed from below in such a way to wrap in a circumference of this opening 31, and consequently, an air chamber 11 to be communicated to continuous bubbles of the cushion pad 2 is formed. The air chamber 11 is devised to be communicated to outside air through the air piping 17 and the solenoid valve 15. In the case when vibration of a low frequency region is added to the cushion pad 2, the solenoid valve 15 is closed and air in the cushion pad 2 is communicated to the outside air through a clearance between a skin of the cushion pad 2 and the plate type frame 3, etc. Consequently, damping is received by a loss of viscosity and resonance magnification is also lowered. In the meantime, the solenoid valve 15 is opened on the contrary when vibration of the high frequency region is added. COPYRIGHT: (C)2004,JPO&NCIPI
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