Austral window, sliding sash tool to lock with sealed function

Austral window, sliding sash tool to lock with sealed function, the drive shaft at window frame middle part including the activity cross -under, the drive shaft is close to indoor one side and is equipped with the handle, be equipped with the separation blade in the drive shaft, the one end of separation blade is equipped with the spring, the other end of spring with slide support including main rack contact in the window frame, be located the transmission shaft with main toothed bar mesh's master gear, the both sides of master gear still are provided with a plurality of pinions respectively symmetrically on the transmission shaft, every pinion all with one can transverse movement vice rack toothing, vice rack is then be connected with the driven shaft, the work end of all driven shafts all is connected with sealing strip, and sealing strip then be arranged in offer including the window frame be close to the recess of outer window frame one side, the drive shaft is passed and is equipped with the external screw thread on sealing strip's the end, and the inboard of window frame is provided with the screw hole that matches with the end outside, still is provided with the barb towards handle one side on main rack, and the tail end of barb lies in the orientation that the separation blade is close to the handle, and the barb can contact with the separation blade.