| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve shock absorption properties of a seat suitable for a transport machine such as a vehicle, an airplane, and a train. <P>SOLUTION: In a seat cushion part 10, a base net 170 for a cushion is supported between a front frame 130 and a rear frame 140 each supported resiliently by torsion bars 150 and 160. The front frame 130 and the rear frame 140 are supported by the torsion bars 150 and 160 via first and second arms 132 and 142, respectively. In this structure, a first arm part 132 of the front frame 130 is longer than a second arm part 142 of the rear frame 140. Consequently, when the front frame 130 and the rear frame 140 turn forward or backward when receiving a shock by front collision and back collision, downward force operates easily. Therefore, jumping out of a human body when a shock is applied is suppressed and rising of a human body upward along a seat back portion can be suppressed, thereby improving shock absorbing properties. <P>COPYRIGHT: (C)2012,JPO&INPIT |
