PURPOSE: To simplify assembly of a support wall and absorb energy by connecting two shock absorbers to an installation rail turnably around a first lateral axis through a holding square bar positioned in between, and supporting a support member for a support wall turnably around a second lateral axis connecting the free ends of bars of the shock absorbers.

CONSTITUTION: Two shock absorbers 2, 3 for absorbing energy are fixed to a rail 5 installed on the floor of an aircraft, by bolts 7 through a holding square bar 4, and a support wall is connected to the shock absorbers 2, 3 through a support member 8. The shock absorbers 2, 3 are arranged parallel with each other and turnable in common around a first lateral axis 10. A second lateral axis 11 is provided at the free ends of bars 12, 13 of the shock absorbers 2, 3, and the support member 8 between the bars 12, 13 is turnably held between the shock absorbers 2, 3. The support member 8 is provided with a U-shape receiving part 14 having lateral leg parts 15, 16, and the lower edge part of the support wall is accommodated between the leg parts 15, 16.