Patent ID: 11913272
Assignee: nan
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 6:
7. The sectional lifting door system of claim 4, wherein the rotation-stopping module includes a fixed sleeve, a movable rotary disc, a movable sleeve and a sleeve clutch mechanism; the fixed sleeve is connected to the frame, the movable rotary disc is connected to the driven gear, the movable sleeve is fixed to the driven shaft, the sleeve clutch mechanism is disposed among the fixed sleeve, the movable rotary disc, and the movable sleeve; when the driven gear drives the movable rotary disc to rotate, the sleeve clutch mechanism urges the movable rotary disc to rotate the movable sleeve; when the movable rotary disc is not in rotation, the sleeve clutch mechanism urges the movable sleeve to be locked in the fixed sleeve.