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

Claim 0:
1. 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,
wherein the first guide device has at least a first guide protrusion and a first guide groove, and the second guide device comprises a second guide protrusion and a second guide groove, wherein the first and the second guide protrusion are provided in the second movable sash so that the first guide protrusion and the second guide protrusion can enter into the first guide groove and the second guide groove respectively, when the second movablesash slide down.