Lub latch yog ib qho khoom siv los khi ob yam khoom. Nws feem ntau muaj qhov txav tau thiab qhov chaw ruaj khov, thiab kev ua haujlwm ntawm kev kaw thiab qhib yog ua tiav los ntawm kev sib xyaw thiab sib cais ntawm ob. Nws txoj haujlwm ua haujlwm yog ua raws li lub hauv paus ntsiab lus. Los ntawm nias lub lever mus rau hauv paus, ib tug locking quab yuam yog generated. Thaum lub lever rov qab mus rau txoj hauj lwm ntsug, lub zog raug tso tawm, yog li paub qhov qhib thiab kaw.
Latches feem ntau yooj yim rau kev khiav lag luam. Qee qhov siab- kawg latches kuj muaj cov haujlwm xws li tiv thaiv- tub sab nyiag, tsis muaj dej, thiab plua plav. Hauv cov ntawv thov sib txawv, cov khoom siv no hu ua txawv. Piv txwv li, nyob rau hauv lub tsheb thiab qhov rooj thiab qhov rais industries, nws yog feem ntau hu ua ib tug "latch," thaum nyob rau hauv machinery thiab lub thawv industries, nws yog feem ntau hu ua ib tug "nqus thiab latch." Ob qho tib si yog cov npe sib txawv rau tib lub luag haujlwm.
