How Do Mortise Locks Work?

The main working principle of a mortise lock includes the following key components:

1. Lock body: The core of a mortise lock is the lock body, which is usually installed inside the door and therefore relatively unobtrusive to the door's appearance. The lock body contains one or more bolts or deadbolts that are used to lock and unlock the door. These latches can be extended or retracted by rotating mechanical components within the lock body to ensure door security.

2. Latch or Bolt: Mortise locks usually include one or more latches or bolts, which are the key parts of locking and unlocking the door. The latch is usually located on the side of the door, while the bolt is usually a longer latch that extends into a lock slot in the door frame to ensure that the door closes securely. When the latch or bolt extends, the door is locked in place and cannot be easily opened.

3. Door Knob and Handle Base: Mortise locks usually have a handle or knob, which is the handle used to operate the lock body. The handle base is the base on which the handle is mounted. The handle can be rotated to operate the lock body, extending or retracting the latch or bolt, thereby locking or unlocking the door.

4. Keyhole and Key: Mortise locks usually require a specific key to unlock. There is a keyhole on the outside of the door and you need to insert the matching key to unlock the door. The keyhole is usually located on the lock body above the base of the handle.

Mortise locks work by extending or retracting a latch or bolt when the handle or knob is operated, thereby controlling the locked state of the door. When the latch or bolt is fully extended, the door is locked and cannot be opened. When the latch or bolt is retracted, the door becomes openable. This mechanism ensures the security of the door and prevents entry by unauthorized persons.

Mortice locks are generally more secure than surface-mounted locks because their construction is more complex and the bolt or bolt often extends into the door frame, making it difficult for an intruder to pry or break. This makes mortise locks one of the top choices for commercial buildings and high-security locations.

In summary, a mortice lock is a door lock that is embedded in a groove inside the door and locks and unlocks the door through the expansion and contraction of a latch or bolt. This kind of lock has high security and stability and is usually widely used in various buildings to ensure door security and control access.