ZIPPER MECHANISM, OF SPECIAL APPLICATION FOR OPENING AND CLOSING OF GREENHOUSE WINDOWS.

摘要

Rack mechanism for opening and closing windows of greenhouses, comprising an input shaft (1) linked to drive means that can be manual or motorized, which is inserted into a drum (2) to which transmits its movement of rotation, in which are located toothed wheels (3) spaced and in parallel arrangement, as well as has a rack (4) of u-configuration equipped with recesses toothed (8) in its wings that moves by transforming the movement of linear movement, which is preferably associated with an edge of the window to facilitate tilting, characterized in that the input shaft (1) has a section equipped with at least one flat face and because the gear wheels (3) mesh with respective crowns (5) equal and larger diameter mounted on a transmission shaft (6) in which are located two pinions (7) that engage in the recesses toothed (8) of the rack (4) sit it is placed in an intermediate position under the sprockets (3) and supported on wheels (9) that facilitate its linear movement. (Machine-translation by Google Translate, not legally binding)