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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
Generally black and polyester.
Designed to elongate in an accident,
to absorb energy.
Securon Colours Red, Blue, Grey, Beige and Orange available.

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

AUTO
Means the Seat Belt has 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.
They can have:

 a)   Webbing sensors ie the
      retractor will lock if the webbing is snatched.

and/or:

b)   Vehicle sensors ie the retractor will lock with sudden
      vehicle movement. Typically abrupt stopping, vibration or roll-over. Vehicle sensors require specific installation angles i.e 90°/90°.

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.
Located just on or below the hip on Seat Belts or on the lap of Harnesses.

Securon Buckles:

  1.      Twin Release (unique to Securon). Released from the top or side.

  2.      Single Release. Released from the top.

  3.     
Options 1 & 2 with Micro Switch (IP67 Rated).

  4.      5 way Buckle released by a turn lever.

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

END BRACKET
At the end of the webbing used to secure the Seat Belt to the Anchorage Point on the vehicle / seat
.

ANCHORAGE HOLES
Found in End Brackets or other components i.e. the Retractor, Pillar Loop, Buckle etc to secure the seat belt to the vehicle / seat.

ANCHORAGE FITTINGS
Fittings i.e. set screws, nuts, washers, brackets etc.

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

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

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

DIMENSIONS
Approximate and measured from the centre of anchorage holes to mouths of buckles.

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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SECURON 2015