Car door lock mechanism diagram


  • How do car door locks work?
  • Understanding Door Lock Parts
  • However, many drivers will not be aware of the workings of the lock and are able to do nothing more than lock and unlock it. Being aware of how these work will help you to determine what will be necessary should a defect arise and what additional safety measures are required.

    Many drivers will only be aware of the car door lock button inside the car, which can be operated by hand or automatically with a remote. This lever or latch is the visible portion of the link to the actuator, which controls the car door locks. In addition to the lock mechanism, there is a lever that is connected to the system which enables you to open the door once the door is unlocked.

    There is much more going on below the surface within the panel that the car door locks are housed in. The visible latch is the small button that goes up and down according to whether the car is locked or unlocked. It is attached to a metal rod, which links it to the main body of the lock mechanism.

    Where the lock has the ability to be operated automatically, there are additional components that will be found as part of the locking mechanism. This will either be an electronic sensor or magnets with a reversible switch. Where the door ceases to be able to be opened with the use of the remote, you will know that the cause is a defect to the electronic sensor or the magnets.

    The car door lock is very important, so look after it and make sure it functions well and correctly always. The rod exerts pressure on the lock-open switch on the back of the door lock mechanism. The door opens when you lift the inside or outside door handle. Computer-controlled automatic locks A computer-controlled lock system also uses a radio signal to wake up door lock and unlock mode. The computer-controlled system sends out computer programming to the key controller module computer.

    The module reads the programming that is directed its way and applies the proper system command. The computer-controlled key usually controls not only locking and unlocking doors but also auto security. The same system has the capability to: Open the trunk lid.

    The main parts of a door lock are the cylinder, bolt, box and strike plate. Understanding the different parts that work together to make a door handle and lock work, can help you fix minor problems on your own. Diagram showing the parts of a door lock, including the knob, rose, cylinder, latch assembly, bolt and strike plate. Parts of a Traditional Lock Cylinder Lock Body The cylinder, or lock body, is the part of the door lock where you insert the key.

    Essentially, it recognizes the correct key when the pins move into their proper places. Bolt or Latch The lock engages a bolt inside the door. This piece of metal extends from the door into the frame and holds it closed. There are two main styles of latch or bolt —a spring bolt and a deadbolt. Spring Bolt — A spring latch is a bolt held in place by a spring clip.

    The spring is compressed to unlock the bolt, and when released, it snaps into a locked position. This type of door generally locks automatically when closed.

    Deadbolt — A deadlatch does not have the spring loading mechanism. It can be locked or unlocked at any time using a key or with a knob on one side of the door. 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 is designed to hold the bolt securely in the doorframe when the lock is engaged.

    The metal plate, which attaches to the frame of the door, is the strike plate. 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. New Locks for Better Security Technology has brought vast improvements to home and commercial security. In particular, businesses are increasingly interested safeguarding their property by upgrading locks and installing security systems.

    Electronic locks are just one of the great new options on the market. Electronic locks are very different from traditional spring or deadbolt style locks. They rely on a series of magnets and small, electric-powered motors that are activated to open and close. Electronic locks are programmed to require the correct keypad combination , key fob , access card or biometric data , such as fingerprints, in order to unlock.

    Smart Electronic Locks are electronic locks with the added capability of being controlled remotely through a smartphone application. A business owner can monitor traffic, restrict access through certain doors, lock doors and activate the security system without being anywhere near the building.

    Usually, smart electronic locks also have a mechanical key cylinder to allow access with a traditional key. An experienced locksmith should also be able to answer any questions you have. Time to Replace Your Traditional Locks? Call us at or fill out our online request form to get in touch with Great Valley Lockshop. This blog was originally published on June 10, and has since been modified and updated to reflect the most accurate information.

    Chris is a volunteer firefighter and "Life Member" for East Whiteland Township Volunteer Fire Company and a huge Nascar fan who loves to go camping and enjoys the outdoors.

    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 is designed to hold the bolt securely in the doorframe when the lock is engaged. The metal plate, which attaches to the frame of the door, is the strike plate.

    How do car door locks work?

    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.

    New Locks for Better Security Technology has brought vast improvements to home and commercial security. In particular, businesses are increasingly interested safeguarding their property by upgrading locks and installing security systems. Electronic locks are just one of the great new options on the market. Electronic locks are very different from traditional spring or deadbolt style locks.

    They rely on a series of magnets and small, electric-powered motors that are activated to open and close. Electronic locks are programmed to require the correct keypad combinationkey fobaccess card or biometric datasuch as fingerprints, in order to unlock.

    Smart Electronic Locks are electronic locks with the added capability of being controlled remotely through a smartphone application. A business owner can monitor traffic, restrict access through certain doors, lock doors and activate the security system without being anywhere near the building.

    Understanding Door Lock Parts

    Usually, smart electronic locks also have a mechanical key cylinder to allow access with a traditional key. An experienced locksmith should also be able to answer any questions you have. Time to Replace Your Traditional Locks? Many drivers will only be aware of the car door lock button inside the car, which can be operated by hand or automatically with a remote.

    This lever or latch is the visible portion of the link to the actuator, which controls the car door locks. In addition to the lock mechanism, there is a lever that is connected to the system which enables you to open the door once the door is unlocked. There is much more going on below the surface within the panel that the car door locks are housed in.

    The visible latch is the small button that goes up and down according to whether the car is locked or unlocked. It is attached to a metal rod, which links it to the main body of the lock mechanism.

    Where the lock has the ability to be operated automatically, there are additional components that will be found as part of the locking mechanism. This will either be an electronic sensor or magnets with a reversible switch. Where the door ceases to be able to be opened with the use of the remote, you will know that the cause is a defect to the electronic sensor or the magnets.


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