For this problem, we must first understand where the door and window hook bar is located in the door and window structure? As for sliding doors and windows, light enterprises and hook enterprises refer to two vertical materials of Casement. The hook enterprise is a lock (the hook enterprise is a lock body), and the light Enterprise is a lock hook (the light Enterprise is a lock hook). Light Enterprises and hook enterprises are usually used together to pull and connect the two windows, and can also be used to lock the two windows. As shown in the following figure:
Their function is: if you want the wind to enter the room from the window, you want to open the window. When you open the window, you will open the lock between the Enterprise and the hook enterprise to let the two casement move freely, thus, air can flow in when there is no space between the two casement bodies. In addition, if there is too much mocking sound outside, we can close the window. Here, lock the two windows with the lock between enterprises and optical enterprises to form a connection, due to the good sealing property, the sound outside is not introduced into the room. Another is that the heating or cold air at home cannot conduct with the outdoor temperature difference, and the window can also be closed. Achieve the function of energy saving and environmental protection.
