Chapter 4: Seat Belt Systems With Pre-Crash Locking Features

4-2 National CPS Certification Training - April 2007 (R1010)

Chapter Objectives:

•Explain the connection between pre-crash locking seat belt systems and CR installation

•Identify seat belt parts•Describe types of pre-crash locking seat belt systems

•Observe an instructor secure a CR using a pre-crash locking seat belt system

4-3 National CPS Certification Training - April 2007 (R1010)

The CR and Seat Belt Connection•All seat belts are designed to lock in a crash

•Correct CR installation requires a pre-crash locked seat belt system

•Something has to lock the CR in the vehicle

4-4 National CPS Certification Training - April 2007 (R1010)

Name the Seat Belt Parts

•Buckle•Retractor•Anchors •Webbing•Latchplate

4-5 National CPS Certification Training - April 2007 (R1010)

Seat Belt Systems With Pre-Crash Locking Features: Locking Latchplate

Locking Bar

Locked

Not Locked

4-6 National CPS Certification Training - April 2007 (R1010)

Seat Belt Systems With Pre-Crash Locking Features: More Locking LatchplatesLocking Part

4-7 National CPS Certification Training - April 2007 (R1010)

Seat Belt Systems With Pre-Crash Locking Features: Switchable Latchplates

ADULT Position

CHILD Position

4-8 National CPS Certification Training - April 2007 (R1010)

Securing a CR With a Pre-Crash Locking Latchplate •Determine latchplate type•Place belt through correct CR belt path and buckle

•Apply weight in CR and pull webbing at the belt path to tighten lap belt

•Check for tight installation

4-9 National CPS Certification Training - April 2007 (R1010)

Workbook Activity 1:Pre-Crash Locking Latchplates

•Name the two types of pre-crash locking latchplates that can secure a CR

•What must you do to put a pre-crash locking latchplate into the locked position?

•What must you do to put a switchable pre-crash locking latchplate into the locked position?

4-10 National CPS Certification Training - April 2007 (R1010)

Automatic Locking Retractors (ALR)

•Can be found in: ▪Lap belt only or▪Lap/shoulder belt

•Test if you have an ALR•Pull the webbing out slowly and gently•See if once you stop, the seat belt can only get shorter

4-11 National CPS Certification Training - April 2007 (R1010)

How to Install a CR With an ALR Retractor •Pull webbing fully out of retractor and HOLD

•Place belt through correct CR belt path and buckle

•Apply weight on seat and let go of extra webbing

•Help put extra webbing back into the retractor

•Check for tight installation

4-12 National CPS Certification Training - April 2007 (R1010)

Seat Belt Systems With Pre-Crash Locking Features: Switchable Retractors

•Can be found in:▪ Lap belt only▪ Shoulder belt only▪ Lap/shoulder belt

•Read labels •Switches to ALR with

your help▪ Test slowly and gently ▪ Pull belt all the way out to

switch to ALR▪ Note that some have a

button to switch to ALR

4-13 National CPS Certification Training - April 2007 (R1010)

Installing a CR With a Switchable Retractor •Route belt through correct CR belt path and buckle

•Gently pull webbing all the way out of retractor and test gently

•Apply weight on seat•Tighten the seat belt•Feed extra webbing back onto the retractor•Check for tight installation at CR belt path

4-14 National CPS Certification Training - April 2007 (R1010)

Workbook Activity 2: Pre-Crash Locking Retractors •Explain the two types of retractors that can secure a CR

•Explain how to secure a CR using an ALR retractor

•Explain how to secure a CR with a switchable retractor

4-15 National CPS Certification Training - April 2007 (R1010)

Hands-On Activity 3:Putting It All Together•Sit in vehicle and buckle seat belt around occupant

•Identify retractor and latchplate type•Demonstrate forward-facing CR installations:▪CR with ALR and top tether▪CR with switchable retractor and top tether▪CR with locking latchplate

4-16 National CPS Certification Training - April 2007 (R1010)

Hands-On Activity 4:Occupant Protection Systems

Latchplate LockingSwitchableNot Locking

Retractor ALRSwitchableNot LockingNone

Vehicle #

_______

Seating position

_______

4-17 National CPS Certification Training - April 2007 (R1010)

Chapter Review

•Connection between pre-crash locking seat belt systems and CR installation

•Seat belt parts•Types of pre-crash locking seat belt systems

•Ways to secure a CR with a pre-crash locking seat belt system