Door loop

A door loop or door cord^[1] is a mechanical device which provides a robust guideway for cabling between a swing door (the "door leaf") and a door frame.

Door loops are described in the NFPA 80 standard for fire doors.^[1]^[2]

Motivation

[edit | edit source]

Door loops are used in cases where electrical components are mounted in the door leaf, like for example a motorized door lock, smart lock, smart doorbell or solenoid bolt. Since the hinges move during operation, a normal laying of cable would quickly wear out. The door loop also ensures that the twisting of the cables is distributed over a longer cable length, which is decisive for the wear of the cables.

Mounting

[edit | edit source]

Normally, the door loop is mounted inside the door frame ("concealed door loops"), and can not be seen except for when the door is open. Another type is surface mounted transfers which serve the same function ("visible door loops"), which normally can be seen on the top of the door at all times.

References

[edit | edit source]

^ ^a ^b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).

v t e Locks, locksmithing, lock picking, and security alarms
Fundamental concepts	Access control Authentication Key control Key duplication Key relevance Master keying Password Physical security Rekeying
Lock hardware	Bitting Interchangeable core Key blank Key code Key retainer Lockrod Lockset Bored cylindrical lock Mortise lock Rim lock Single-point locking Three-point locking
Keys	Berlin key Car key Keychain Skeleton key Smart key
Mechanical locks	Warded lock Pin tumbler lock Disc tumbler lock Lever tumbler lock Magnetic keyed lock Padlock Combination lock Rotary combination lock Time-delay combination locks Time lock Tubular pin tumbler lock Wafer tumbler lock
Electronic locks	Electromagnetic lock Electronic lock Electric strike Keycard lock
Other lock types	Bicycle lock Bramah lock Chubb detector lock Child safety lock Kensington Security Slot Latch Luggage lock Power door locks Protector lock Real-estate lock box Steering-wheel lock The Club
Lock picking	Lock bumping Locksport Slim Jim Snap gun
Door hardware	Dead bolt Door chain Door closer Door frame Door furniture Door handle Door security Doorstop Hinge Night latch
Emergency access/exit	Crash bar Electromagnetic door holder Emergency exit Emergency light Exit control lock Exit sign Knox Box
Security alarms	Alarm device Alarm monitoring center Car alarm Card reader Closed-circuit television Door loop Dual loop Fingerprint scanner Glass break detector Heat detector Key switch Keypad Miniature snap-action switch Motion detector Occupancy sensor Passive infrared sensor (PIR) Perimeter intrusion detection Photoelectric sensor Piezo switch Pressure switch Proximity card Reed switch Tripwire Ultrasonic transducer Vandal-resistant switch Water detector Window security
Miscellaneous	Glossary of locksmithing terms John M. Mossman Lock Museum Key to the City Lock Museum Lock Museum of America Musée de la Serrure Puzzle lock
Error creating thumbnail: File missing Category:Locksmithing Error creating thumbnail: File missing Keys Error creating thumbnail: File missing Locks Book

Motivation

Mounting

References

Navigation menu

Search