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Seat Belts, Harnesses & Safety Restraints


COMPONENTS
Descriptions of the component parts of a Seat Belt with Links to pictures & line drawings.
WEBBING
Polyester.
Designed to elongate under load,
to absorb energy.
Securon Colours Red, Blue, Grey, Beige, Orange, Yellow and Black.

Fluffing, fraying or broken strands weaken webbing.
Generally 47mm wide. 72mm is used on 'special' heavy duty applications and Race/Rally Harnesses.

AUTO
Generally used to describe a Seat Belt which incorporates a retractor.

STATIC
Means the Seat Belt does not have a Retractor.

RETRACTOR
Designed to stow webbing not in use and lock in a predetermined situation.

Types
:

1. Emergency Locking Retractors (ELRs) - lock in an emergency i.e:

If the webbing is snatched.

and/or:

With sudden vehicle movement.

Technical definition (from ECE R16):
"A retractor which during normal driving conditions does not restrict the freedom of movement by the wearer of the safety-belt.
Such a device has length adjusting components which automatically adjust the strap to the wearer and a locking mechanism actuated in an emergency".

2. Automatic Locking Retractors (ALRs) which lock when the lap belt is put around the wearer.

Technical definition (from ECE R16)
"A retractor allowing extraction of the strap to the desired length and which, when
the buckle is fastened, automatically adjusts the strap to the wearer.
Further extraction of the strap is prevented without voluntary intervention by the wearer."

ADJUSTER
Used to remove slack from the Seat Belt.

TONGUE (male) connector
The part that is pushed into the Buckle
to connect the Seat Belt.

BUCKLE (female) connector
The part into which the tongue is pushed
to connect the Seat Belt.
Technical definition (from ECE R16)

"A Quick Release device enabling the wearer to be held by the belt"

STALK/CABLE
Part of buckle assembly used to connect the buckle to the Anchorage.

END BRACKET
At the end of the webbing used to secure the Seat Belt to the Anchorage
.

ANCHORAGE FITTINGS
Set screws, nuts, washers, brackets etc.

ANCHORAGE POINTS
Provided on the vehicle/seat for attachment.
PILLAR LOOP/WEBBING GUIDE
A guide that helps the webbing flow in the correct position. Used on 3 point belts with a Retractor.

LAP STRAP
Webbing that passes across the lap / bone structure at the top of the legs.

DIAGONAL/SASH STRAP
Webbing that passes across the centre of the wearer's shoulder and chest.

APPROVALS
A Seat Belt should be clearly marked to indicate that it is Approved to an Internationally recognised Standard i.e.
'E' (Economic Commission for Europe Regulation 16) FURTHER INFORMATION

PRETENSIONERS
Incorporated in some Seat Belt systems at the Retractor or Buckle to help reduce webbing slack in the event of an accident.

ELECTRICAL CONNECTIONS
Incorporated in some Seat Belt systems at the Retractor or Buckle to help provide a warning and or control a Pretensioner.

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