The multi-lock hardware system features lock points and lock seats distributed across the entire door or window frame. When the door or window is locked, these components work together to create a strong sealing force that compresses the sealing strip, allowing it to deform elastically. This ensures a tight seal between the sash and the frame, enhancing overall performance. The multi-point locking system works in conjunction with hinges or sliding supports to provide a more stable and secure closure, which significantly improves the sealing efficiency of the door or window.
In contrast, single-lock hardware systems have limited effectiveness. With only one locking point on the opening side, they can only generate around three to four locking points when combined with hinges or sliding supports. This leaves the four corners of the door or window unsecured, resulting in gaps between the lock points. These gaps severely compromise the sealing performance, leading to air leakage and reduced energy efficiency.
To illustrate, consider a window with width B and height H, and a sash with bending stiffness E×I. By comparing different configurations—such as single, double, and triple lock points (with a minimum distance of 0.1mm between the lock points)—we can calculate the maximum deformation of the sash in the sealing direction using mechanical formulas. It becomes evident that using three lock points significantly reduces deformation and enhances the sealing performance of the window.
However, it's important to balance the number of lock points. While more lock points improve sealing, too many may lead to unnecessary complexity and cost. Therefore, the design should be optimized to meet both strength and sealing requirements without overcomplicating the system.
Additionally, many standard hinges used in doors and windows require cutting away part of the sealing strip at the hinge location. This not only weakens the seal but also introduces potential air leakage points. Unfortunately, the impact of these gaps on energy efficiency is often overlooked, even though they can significantly affect thermal performance.
By adopting a well-designed multi-lock system, users can achieve better sealing, improved energy efficiency, and long-term durability. It’s essential to consider all factors, from the placement of lock points to the integration with other hardware components, to ensure optimal performance.
Global Hardware Network
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**Labels:** Door and Window Hardware
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