To make it possible to open and close the head of stairs by a staircase cover in automatic mode by interlocking the head is stairs with the up and down of a movable floor in a room provided with a movable floor.
A board-shaped staircase cover 51 is rockably supported on an axis A1 of a movable floor 17. The tip of the staircase cover 51 is connected to a fixed floor 19 with a connecting rod 52. When the movable floor 17 is adapted to fall down, a rotary motion will act on the staircase cover 51 in the direction marked with the arrow R51 by the connecting rod 52. When the movable floor 17 is laid out at the falling position below, the staircase cover 51 is horizontal, thereby closing the head 20e of a staircase 20b. When the movable floor 17 is located at a rising position, the staircase cover 51 takes up an erected posture and retreats from the upper space of the staircase 20b, which protects a resident from any possible disadvantage when moving upstairs or downstairs.
CHIBA NORIO
UCHIYAMA HIDEYA
MIYAKE HIRONOBU
HARADA SHUNSUKE
SOMENO SEISAKUSHO KK
HITACHI METALS LTD