Patent ID: 11898398
Assignee: TAROKO DOOR & WINDOW TECHNOLOGIES, INC.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 8:
9. A flat-type ventilation door-window structure, characterized in that, comprising a frame, a first movable sash and a second movable sash, wherein the first movable sash and the second movable sash can slide up and down in an opening of the frame, a first guide device and a second guide device are respectively provided between the first movable sash or the second movable sash and the frame, the first and the second guide device can guide the first or the second movable sash to change the sliding path,
at least one forcing means is further provided on the second movable sash, the forcing device has at least a lever, a lead and a connecting lever connected between the lever and the lead, wherein the lead is arranged inside the top surface of the second movable sash and a second resilient pushing member is provided at an inner edge of the frame near an end of the lever.