Patent ID: 11939817
Assignee: nan
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. An automatically locked retractable protective door sill, comprising:
a retractable curtain assembly (15),
a scroll assembly (14),
an upper fixing base (1) and
a lower fixing base (13), wherein
the upper fixing base (1) and the lower fixing base (13) are respectively assembled at upper and lower ends of the scroll assembly (14), and the retractable curtain assembly (15) is connected to the scroll assembly (14) and wound by the scroll assembly (14); a dial mechanism (17) and a locking mechanism (18) are arranged in the upper fixing base (1), and the scroll assembly (14) is connected to the locking mechanism (18); the locking mechanism (18) comprises a hydraulic rod (6) capable of retracting at a fixed time, the hydraulic rod (6) is connected to the dial mechanism (17), wherein the dial mechanism (17) comprises a dial button (2), a sliding base (4) and a linkage base (7), the dial button (2) is exposed outside a shell (11) of the upper fixing base (1), the sliding base (4) and the linkage base (7) are mounted in the shell (11), the linkage base (7) is docked with the locking mechanism (18), the dial button (2) penetrates through the sliding base (4) and is connected to the linkage base (7), and the dial button (2) pushes the linkage base (7) to move so that the locking mechanism (18) locks or unlocks the scroll assembly (14); and the sliding base (4) is connected to the hydraulic rod (6), and the hydraulic rod (6) drives the sliding base (4) and drives the linkage base (7) to reset automatically, so that automatic locking of the locking mechanism (18) is achieved;
wherein a mounting base (5) is mounted in the shell (11) of the upper fixing base (1), a first mounting groove (51) and a threading hole (53) are formed in the mounting base (5), and the hydraulic rod (6) is mounted in the first mounting groove (51); the sliding base (4) is located on the mounting base (5), a sliding hole (41) is formed in the sliding base (4), and the sliding hole (41) is opposite to the threading hole (53) in an up down direction; and a dial groove (16) is arranged on the shell (11), the dial button (2) is arranged in the dial groove (16), and a dial rod (21) of the dial button (2) is downwards, successively penetrates through the sliding hole (41) and the threading hole (53), and is fixedly connected to the linkage base (7).