Abstract

Provided in the present invention is a PVC plastic-wood ventilation window, wherein a transmission mechanism for driving a plurality of slats to rotate synchronously is provided inside one vertical frame, the plurality of slats are rotatably connected and assembled between two vertical frames, and a horizontal frame is assembled and connected at each of the top and bottom of the two vertical frames. Compared with the prior art, in the present invention, when the included angle between an inclined surface and a vertical surface is 18.43°, the component of force in the horizontal direction is weakened, and the force received by the slats that attempts to rotate the slats is smaller. Therefore, the included angle being designed to be 18.43° allows the slat to be less likely to rotate, thereby reducing the push-open rate. When the slats are driven by an external force to rotate, the direction of the force is exactly opposite, and in this case, a labor-saving pulley system formed by a large pulley, a small pulley and a fixed pulley is converted into a laborious pulley system, such that the slats are less likely to be pushed open, thereby reducing the probability of the slats being pushed open, reducing the push-open rate of the slats, and further reducing the push-open rate.

IPC Classes  ?

• E06B 7/084 - Louvre doors, windows, or grilles with rotatable lamellae
• E06B 7/096 - Louvre doors, windows, or grilles with rotatable lamellae interconnected for concurrent movement operated or interconnected by gearing
• E05D 13/00 - Accessories for sliding or lifting wings, e.g. pulleys, safety catches