Abstract: A flush bolt configured to be installed on a door leaf with an astragal. The flush bolt comprises a main body, a bolt and an actuating mechanism. The main body includes a chassis, a faceplate fixed to the chassis and a backplate. The faceplate is divided by a hypothetical plane which is perpendicular to the faceplate and which passes through an axis of the bolt into a first flange and a second flange. The first flange and the second flange are fixedly attached to the chassis. The backplate is divided by a hypothetical plane which is perpendicular to the backplate and which passes through an axis of the bolt into a third flange and a fourth flange. The third flange includes a first pair of fixed sections and a first movable section that is separate from the first pair of fixed sections.

Abstract: The door sill includes a sill deck and a rail carrier assembly having a function of height adjustment. The rail carrier assembly is configured on the sill deck. The rail carrier assembly includes a rail cap, a rail carrier, an adjustment nut and an adjustment screw. The rail cap is snapped onto an upper end of the rail carrier. A groove is formed in the sill deck for the rail carrier to fit in. A nut installation hole is formed in the rail carrier. The adjustment nut is assembled at the nut installation hole, and is in threaded fit with the adjustment screw. The adjustment screw drives the adjustment nut to move up or down in an axial direction of the adjustment screw through rotation, thereby altering the height of the rail carrier fitted in the groove and altering the height of the rail cap.

Abstract: The door sill includes a sill deck and a rail carrier assembly having a function of height adjustment. The rail carrier assembly is configured on the sill deck. The rail carrier assembly includes a rail cap, a rail carrier, an adjustment nut and an adjustment screw. The rail cap is snapped onto an upper end of the rail carrier. A groove is formed in the sill deck for the rail carrier to fit in. A nut installation hole is formed in the rail carrier. The adjustment nut is assembled at the nut installation hole, and is in threaded fit with the adjustment screw. The adjustment screw drives the adjustment nut to move up or down in an axial direction of the adjustment screw through rotation, thereby altering the height of the rail carrier fitted in the groove and altering the height of the rail cap.