| 摘要 |
PROBLEM TO BE SOLVED: To provide a simple structure capable of suitably reducing a deceleration of an occupant at the time of collision. SOLUTION: A movable floor 2 is provided on a main frame 1 in contact with a first side beam 3, bent parts 7a and 7b are provided at two positions for raising the body rear portion of the movable floor upward from the floor surface of the main frame 1, a sheet 9 is provided on a rear inclined surface part between both bent parts, and a second side beam 6 is provided integrally with the movable floor 2 on the body forward side. Because a large impact reaction acts on the second side beam at the beginning of collision a deceleration larger than an average deceleration occurs, and both bend parts are deformed by a difference in moving amount produced between both side beams due to a deceleration difference between the two so as to displace the sheet relatively to the rear of the body. Thus, a negative body deceleration is produced on the sheet, and the entire body is decelerated at the average deceleration, and a body deceleration waveform desirable for the deceleration of occupant can be realized.
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