In an environment with intensive personnel flow, customers did not choose the corresponding American standard mortise lock due to lack of knowledge of product standards or to save costs. Instead, they chose other standard commercial locks or even civilian locks. It will become invalid and unusable. Frequent lock repairs and lock replacements not only bring great troubles to customers, but also greatly increase the maintenance cost in the later period. The total cost is much higher than the correct specification of door locks. In the event of an accident, ordinary civilian doors The lock will most likely be unable to withstand the load caused by crowding or even fail, resulting in unimaginable consequences.
At present, among the universal door control hardware product standards in the world, the non-American standard ANSI with the highest grade and the longest history is none other than. Because the American standard hardware products cover a wide range and have high technical requirements, the American standard ANSI also represents the world's highest and most advanced hardware application level and manufacturing level. It is suitable for high personnel flow density, extremely frequent use, and harsh environment. , The environment with very harsh conditions such as strong corrosive environment has very high technical requirements on the strength and service life of door locks and other door control systems.
The American standard mortise lock life test is the most demanding of all locks. However, it is not difficult to achieve the optimization as long as appropriate materials are selected during the design and the relevant parts and structure optimization that may cause failure during the life test are fully considered.
American standard mortise locks can have more than 30 functional options, which can adapt to various environments and needs. Single tongue classroom lock, except that the handle is locked by an external key, both internal and external handles can be operated to open the door, and the external key can unlock the handle and retract the lock tongue. It can be used in classrooms and conference rooms; double tongue dormitory lock, internal handle Operate to retract the dead tongue and the oblique tongue. The external key can operate the oblique tongue, which can be used for dormitory or entrance door lock; the double-tongue toilet lock is usually only used for the oblique tongue, which is equivalent to a channel lock, and the internal knob can be used to lock the deadlock when necessary. The tongue can only go out but not in. It can be used in public restrooms for easy maintenance; apartment locks, the handle can retract the diagonal tongue, the function switch button can lock the outer handle, and the outer handle can be locked when the tongue is extended. In apartments, door locks, etc.
