What Is a Lever Handle?
A lever handle is a type of handle used to operate a door or gate via a latch mechanism. Common in homes, commercial facilities, and vehicles, lever handles are favored for their ease of operation and often include a built-in locking mechanism for improved security. Available in various designs, they can complement the interior aesthetics of any space. However, considerations should be made for durability in high-use or harsh environments, and accessibility for individuals with physical limitations.
Uses of Lever Handles
Lever handles serve various functions across different settings:
1. Housing
Used on entrance and interior doors to ensure privacy and security within residential spaces.
2. Commercial Facilities
Facilitate access management in offices and restaurants, sometimes featuring advanced locking systems for enhanced security.
3. Public Facilities
Bar-type and push-bar lever handles ensure easy operation in emergencies, managing access and security for large crowds.
4. Vehicles
Designed for ease of use, they operate doors and trunks, contributing to passenger safety by enabling secure door operation.
Principle of Lever Handles
Lever handles function by securing or releasing a door through a latch mechanism, consisting of a latch bolt, handle, and latch mechanism.
1. Latch Bolt
Engages with the door frame to lock the door upon closing and retracts to release the door when operated.
2. Handle
The component used to manually operate the door, designed for ergonomic use.
3. Latch Mechanism
Controls the interaction between the handle and latch bolt, retracting or extending the latch bolt as necessary.
Types of Lever Handles
Diverse lever handle types cater to various operational and security needs:
1. Electronic Latch
Operated electronically, often found in public buildings and homes, unlocking via PIN code.
2. Cam Latch
Utilizes a cam for operation, known for its resistance to vibrations and minimal rattling.
3. Slide Latch
Features a sideways sliding mechanism to operate the door, common in internal doors and cabinets.
4. Draw Latch
Operated by pulling, typically used on double doors, named for its pulling (drawing) action.