| 摘要 |
Set of ventilation gate has panel with openings for air passage and intended for bringing to coincidence with panel with possibility of reciprocal motion gate with openings for air passage, similar in form, dimensions and placement to openings for air passage in panel. To increase technological properties of assembly openings for air passage in gate are closed with net, panel is part of frame restricted with two normal to each other pairs of parallel straight elements of frame. Elements of frame have two pressing bosses in direction parallel to surface of contact of panel and gate. Edges of gate have slots corresponding to pressing bosses. The gate has drive lever that goes out through cut provided in the body. To set of air gate body is included, with openings for air passage, this can be connected to frame at side of gate. Edges of the body have to go round the edges of the frame and have bosses that have to go behind the edges of the frame and to be in contact with edges of the back side of frame. At the edges of the back side of the frame depressions are provided in places intended for contact with bosses placed at the edges of the body. |
