of the component parts of a Seat Belt with Links to pictures & line
Generally black and woven from thousands
of strands of polyester.
Made to a high specification and designed to elongate by 10% to 15% in
an accident to
Other colours in the standard range: 'Securon' Red, Blue, Grey and
Colours may fade and change so to achieve matching webbing buy all the
Seat Belts at the same time.
Webbing must be in good condition - Fluffing, fraying or broken strands
weaken webbing - just like any piece of cloth.
Webbing is generally about 50mm wide, wider webbing (i.e. 75mm) is used
on some 'special' applications and Race/Rally Harnesses.
the Seat Belt has a Retractor.
the Seat Belt does not have a Retractor.
known as Roll-up device, Inertia Reel, Automatic Reel, Automatic Seat
Belt & Retractable
Designed to stow webbing not in use and lock in a predetermined situation.
Locking Retractors (ELRs) which lock in an emergency.
They can have a) and/or b):
a) Webbing sensors which
sense webbing acceleration. ie the
retractor will lock if the webbing is snatched.
Typically abrupt torso movement.
b) Vehicle sensors which sense
vehicle movement. ie the retractor will lock with sudden
vehicle movement. Typically abrupt stopping, vibration
or roll-over. Vehicle sensors require specific installation angles i.e
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".
Locking Retractors (ALRs) which lock when the lap belt is put around
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."
to remove slack from the Seat Belt. It can be separate (in the webbing),
part of the end bracket or part of another component i.e. the tongue.
TONGUE (male) connector
part that is pushed into the Buckle when connecting the Seat Belt and
is ejected when the quick release is used.
BUCKLE (female) connector
part into which the tongue is pushed when connecting the Seat Belt.
Generally located just on or below the hip on Seat Belts or on the lap
The Buckle is connected to the vehicle by means of:
with an anchorage hole.
A Metal strap with an anchorage hole.
Webbing with an end bracket.
manufacture the following quick release Buckles:
Buckle (unique to Securon). Designed to be released from the top or
- quicker to release & easier
Release Buckle with Micro Switch (IP67 Rated).
Release Buckle. Ideal for Lap Belts and Harnesses.
Turn Lever Buckle. A 5 way turn lever Buckle which complies
with the latest FIA requirements.
used to connect the buckle to the Anchorage Point and to help position
the Buckle just on or below the hip.
Used to secure the Seat Belt to the
(PreDesignated) Anchorage Point on the vehicle generally by means of
UNF Set Screw.
May include an adjuster to alter the length of the webbing. Either rotates
in the direction of the load ( with the use of a shouldered spacer)
or is fixed in the direction of the load. A Snap Hook for quick release,
from an eye bolt, is used in some applications.
to secure the Seat Belt to the (PreDesignated) Anchorage Points on the
vehicle generally by means of 7/16" UNF Set Screws. Found in End
Brackets or other components i.e. the Retractor, Pillar Loop, Buckle
i.e. set screws, nuts, washers, brackets etc. used to connect the Seat
Belt via its Anchorage Holes to the (PreDesignated) Anchorage Points.
are the points on the vehicle to which the Seat Belt is attached.
They are fabricated by the vehicle manufacturer to help absorb the loads
in an accident and position the Seat Belt correctly.
The strength and position of ()
Points is independently approved.
A metal guide that helps the webbing flow
in the correct position. Generally only included on a Seat Belt with
section of webbing that passes across the wearer's lap (bone structure
at the top of the legs).
section of webbing that passes across the centre of the wearer's shoulder
and chest (bone structure).
Are approximate and are measured from
the centre of anchorage holes to mouths of buckles.
Seat Belts and the anchorage points
to which they are fitted should be approved. A Seat Belt should be clearly
marked to indicate that it is Approved to an Internationally recognised
'E' (Economic Commission for Europe) or 'BSI' (British Standards Institute).
A device attached to or
incorporated in some Seat Belt systems at the Retractor or Buckle. Intended
to help reduce any webbing slack in the event of an accident. They are
NOT a requirement of the Seat Belt Standards and many systems, including
Securon's, do not use them. GUIDANCE
Attached to some Seat Belt systems at the
Retractor or Buckle. Intended to help provide a warning and or help
control a Pretensioner. They are NOT part of the Seat Belt Standards
and many systems, including Securon's, do not use them.