Door Hardware Function Types

Classroom lockset the latchbolt is retracted by the grip on either side unless the outside grip is locked by the.

Door hardware function types.

This particular lock is always locked and requires a key to be used each time you want to. Double cylinder deadbolts require a key to unlock from the outside and the inside. Keyed entrance doorknobs and levers description. This is the most common type of lock and chances are you probably have them on your home or office now.

Here is a quick explanation of each type and what they are used for. Standardizing lock functions the function or mechanical behavior of a lock especially a mortise or cylindrical lever lock should be specified for an opening. Most electrified hardware is available in one of two functions. Door releases push button or other inside locking device.

The relevant standard defining locks functions depends on the type of lock it is. When electricity is applied to an electrically locked el mortise lock the outside lever is locked but on most electrified lock functions the inside lever always allows free egress. Emerge ncy release in outside knob lever. Rotating inside knob or closing door releases push button.

They improve security if the door has. Deadlocking latchbolt by inside lever except when locked by key. There are two types. Electrically locked fail safe or electrically unlocked fail secure.

Emergency push button in outside knob unlocks door. Entrance or keyed entry knobs are usually used on exterior doors. Inside lever always operates latchbolt. Fail safe or fail secure.

Latch bolt by knobs. There are two functions that are most commonly used. Power off unlocked. Locksets with a deadbolt.

Single cylinder deadbolts require a key to unlock from the outside but unlock with a small knob or thumb turn on the. Non removable blank 13plate outside 16 31 mm projection. Helpful tools for architects and building designers. Deadlocking latchbolt operated by key in outside lever or by operating inside lever.

Fail safe and fail secure refers to the status of the secure side key side outside of the door. Types of door functions the main types of door functions are passage doors that don t require locking privacy a door that can be locked by a button on the inside dummy has no mechanical latch and acts only as a pull and interior mortise door with an active latch with skeleton key lock. Outside knob locked by push button in inside knob. These are classified into more than 20 types using codes developed by door hardware group bhma.

The five lockset functions. Outside lever is always locked. Rotating inside knob lever or closing door releases unlocks button.