In particular, businesses are increasingly interested safeguarding their property by upgrading locks and installing security systems. Technology has brought vast improvements to home and commercial security. The purpose of the strike plate is to guide the bolt from the cylinder into the box of the frame and give added reinforcement to the locking mechanism. The metal plate, which attaches to the frame of the door, is the strike plate. It is designed to hold the bolt securely in the doorframe when the lock is engaged. The bolt extends from the cylinder into a small square shaped hole-this is the “box”. The deadbolt plunger (or guardbolt) is smaller and directly next to the deadbolt its job is to prevent the lock from being picked or ‘jimmied’ open. Deadbolts are generally considered to be the more secure choice between the two types of bolts, especially when the lock has a deadbolt plunger. It can be locked or unlocked at any time using a key or with a knob on one side of the door. Deadbolt – A deadlatch does not have the spring loading mechanism.This type of door generally locks automatically when closed. The spring is compressed to unlock the bolt, and when released, it snaps into a locked position. Spring Bolt – A spring latch is a bolt held in place by a spring clip. There are two main styles of latch (or bolt)-a spring bolt and a deadbolt. This piece of metal extends from the door into the frame and holds it closed. This “opens” the cylinder, allowing the bolt to move, and you to open the door. Essentially, it recognizes the correct key when the pins move into their proper places. When you insert a key, the uneven edge pushes the pins upward to fit the key’s height in that location within the lock body. When it’s locked, the cylinder engages a series of spring-loaded pins which keep the cylinder from turning. The cylinder, or lock body, is the part of the door lock where you insert the key. Parts of a Traditional Lock Cylinder (Lock Body) Diagram showing the parts of a door lock, including the knob, rose, cylinder, latch assembly, bolt and strike plate. Remember, if you’re having problems with a sticky or faulty door, knob, handle or lock, trust the skilled locksmiths at Great Valley Lockshop to help. Understanding the different parts that work together to make a door handle and lock work, can help you fix minor problems on your own. It’s useful for any DIY-er to know how things around the home operate. The main parts of a door lock are the cylinder, bolt, box and strike plate. Category: Locks & Keys Author: Chris Strauss Understanding Door Lock PartsĮach type of lock is built differently, but let’s take a look at the anatomy of a typical door lock usually used in homes or light commercial buildings.
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