Patent ID: 11952829
Assignee: QINGDAO SEA NOVA BUILDING PROFILES PRODUCTS CO., LTD.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A door sill, comprising a sill deck (1) and an adjustable rail carrier assembly (2), wherein:
the adjustable rail carrier assembly (2) is configured on the sill deck (1);
the rail carrier assembly (2) includes a rail cap (3), a rail carrier (4), a flange nut (38) and an adjustment screw (6);
the rail carrier (4), which has an H-shaped cross section, includes a vertical pair of legs, a bar extending horizontally to connect the pair of legs and a nut installation tunnel (8) which traverses the bar;
the flange nut (38) includes a threaded bore (5), a limiting flange (9) around a lower end of the threaded bore (5) and a plurality of spikes (10) rising from the limiting flange (9);
the threaded bore (5) is plugged into the nut installation tunnel (8);
the plurality of spikes (10) are implanted into the bar;
a groove (7) is formed in one side of the sill deck (1);
the groove (7) is configured to match with the rail carrier assembly (2) for the rail carrier (4) to fit in the groove (7);
a lower portion of the pair of legs remains within the groove (7) despite when the rail carrier (4) is elevated to its highest position;
the pair of legs stand on a bottom surface of the groove (7) when the rail carrier (4) is dropped to its lowest position;
the rail cap (3), which is arranged along an extension direction of the rail carrier (4), removably joins to the rail carrier (4) at an upper end of the pair of legs;
the adjustment screw (6) is in threaded fit only with the threaded bore (5);
a lower surface of the adjustment screw (6) is pressed against the bottom surface of the groove (7); and
the adjustment screw (6) is configured to drive the flange nut (38) to move up or down in an axial direction of the adjustment screw (6) through rotation, thereby altering the height of the rail carrier (4) fitted in the groove (7) and altering the height of the rail cap (3).