AIR SHUT-OFF STRUCTURE FOR A LOWER END OF A SWING-IN DOOR FOR INTERLOCKING VERTICALLY AT 90 DEGREES, CUTTING OFF, AND OPENING A SPACE FORMED AT THE LOWER END OF THE DOOR IN OPENING AND CLOSING THE DOOR BY A STRIP HAVING AN UPPER ELASTIC DEFORMING UNIT AND A LOWER SPACE SHUT-OFF UNIT

摘要

PURPOSE: An air shut-off structure for a lower end of a swing-in door is provided to improve sealing efficiency and to increase quality of a non-step low floor bus by preventing a black brush from being shown from the outside. CONSTITUTION: An air shut-off structure for a lower end of a swing-in door is composed of a pair of doors combined with a brush(11) moved down to the inside of the bus in a lower space(S) of the closed swing-in door; an arm unit(20) having an arm(23) and a rotary shaft(21) combined to the upper and lower ends of the door by a hinge to open and close the door; and a strip(30) moved down toward the outside of the bus in the lower space of the closed swing-in door and hinge-joined to the side lower end of the swing-in door. When the rotary shaft of the arm unit rotates, the arm interlockingly turns over the strip and opens the swing-in door inward the bus at 90 degrees. In closing the swing-in door, the rotary shaft of the arm unit rotates reversely to shut the swing-in door and move down the strip disposed at the lower end of the door.