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Side-facing wheelchair after a frontal impact test. With many wheelchairs, it’s difficult to find four places to attach tiedown straps. ISO 7176-19: Scope. Scope: general

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iso 7176 19 scope
ISO 7176-19: Scope

Scope: general

  • Specifies general design requirements, test procedures, and performance requirements for wheelchairs that are suitable for forward-facing seating in a motor vehicle.
  • Harmonized with CSA-Z604 & ANSI/RESNA-WC/19
part 19 scope cont
Part 19: Scope (cont.)

Part 19 applies to:

  • all wheelchairs that allow a seated posture,
  • wheelchairs for use in all types of vehicles,
  • wheelchairs intended for forward-facing occupancy in a motor vehicle,
  • wheelchairs used by adults only, (US-WC-19 child also)
  • complete wheelchair systems = base + seat
other part 19 contents
Other Part 19 Contents?
  • design requirements,
  • performance requirements,
  • test methods,
  • labeling requirements.

--that are needed to provide safer forward-facing seating in a motor vehicle

part 19 design requirements
must allow a seated posture,

with seat and seatback angles <30 degrees to horizontal and vertical, respectively

Part 19: Design Requirements
wc 19 design requirements
WC/19: Design Requirements

Must minimize hard sharp edges

part 19 design requirements cont
Part 19: Design Requirements-cont.

Must provide four accessible

attachment points

Std. Symbol

part 19 design requirements cont four accessible securement points
Part 19: Design Requirements-cont. Four accessible securement points-

--with slot geometry for hook or strap attachment)

part 19 design requirements cont1
Part 19: Design Requirements-cont.

Front and rear wheelchair attachment points must be located within specific zones

part 19 design option wheelchair anchored belts
Part 19:Design OptionWheelchair-Anchored Belts
  • Wheelchairs may also include a fully integrated belt restraint system, where both lower (pelvic) and upper (shoulder or harness belts) anchor to the wheelchair.
  • Currently, a fully integrated restraint is primarily achievable with pediatric wheelchairs.
part 19 performance requirements
Part 19: Performance Requirements
  • Frontal Impact @ 30 mph, 20 G
  • Securement-Point Accessibility
  • Tiedown Clear Paths
  • Wheelchair Lateral Stability (US)
  • Accommodation and Fit of Vehicle-Anchored Belt Restraints

All confirmed by std. laboratory tests

in summary why choose a part 19 wheelchair
In Summary:Why choose a Part 19 wheelchair?
  • improved structural design and materials for crashworthiness,
  • reduction in sharp edges and hard points,
  • improved battery retention and increased use of gel-cell batteries,
  • provision of four accessible securement points,
  • provision for use of wheelchair-anchored pelvic belt,
  • improved accommodation and fit of vehicle-anchored belt-restraints.
other ongoing developments
Other Ongoing Developments
  • Other transport stds. work:
  • ISO 10542:
    • Part 3 - Docking Systems-FDIS
    • Part 4 - Clamp Systems-FDIS
    • Part 5 - Systems for specific wheelchairs-FDIS
  • ISO 16840:
    • Part 4 -Seating systems for use in motor vehicles-DIS
  • All ISO 10542 scheduled for completion in 2004
  • ISO 16840-2005
iso 10542 3 docking systems
ISO 10542-3: Docking Systems
  • Scope:
    • WTORS that use docking type w/c securement,
    • UDIG specification
    • design and performance requirements,
    • all types of w/cs,
    • forward facing in vehicle,
    • adults only.

custom securement adapter

iso10542 4 clamp systems
ISO10542-4: Clamp Systems
  • Scope:
    • WTORS that are use clamp-type WTORS to secure w/cs,
    • design and performance requirements,
    • all types of w/cs,
    • forward facing in vehicle
    • adults only.
  • Performance:
    • 30mph/20g crash test??
iso10542 5 systems for specific wheelchairs
ISO10542-5: Systems for specific wheelchairs

Scope:

  • WTORS intended for use with a specific w/c
  • design and performance requirements
  • all types of w/cs
  • forward facing in vehicle
  • adults and children >22kg

Performance:

  • 30mph/20g crash test??

Specific wheelchair

only

Docking tiedown

device

iso 16840 4 seating systems for use in motor vehicles
ISO 16840-4: Seating systems for use in motor vehicles

Scope:

  • Seating systems fitted to w/cs
  • design and performance requirements
  • all types of w/cs
  • forward facing in vehicle
  • adults and children >22kg

Seating systems not designed

to withstand crash loads

iso 16840 4 seating systems impact test set up
ISO 16840-4: Seating Systems-Impact test set-up
  • interchangeable X-brace frames,
  • deformable seat back elements,
  • deformable caster elements,
  • replaceable seat support structure,
  • adjustable foot rest position,
  • 106 lbs.

Surrogate Test Base

iso 16840 4 seating systems for use in motor vehicles1
ISO 16840-4: Seating systems for use in motor vehicles
  • Scope:
    • Seating systems fitted to w/cs
    • design and performance requirements
    • all types of w/cs
    • forward facing in vehicle
    • adults and children >22kg

Failed Back Rest

16mph-10g-rear impact

iso 16840 4 seating systems for use in motor vehicles2
ISO 16840-4: Seating systems for use in motor vehicles
  • Scope:
    • Seating systems fitted to w/cs
    • design and performance requirements
    • all types of w/cs
    • forward facing in vehicle
    • adults and children >22kg

Improved

Seating System

summary occupant restraint best practices
Summary: Occupant Restraint “Best Practices”
  • Use both pelvic and shoulder belt to restrain the occupant
  • Fit restraints over bony anatomy
    • Upper body restraint over the Sternum
    • Pelvic restraint low over the bony pelvis
  • Avoid loading soft tissues (abdomen)
  • Remove belt slack
  • If available, use a retractor (reduces slack)
  • Or a restraint pre-tensioner (reduces load)
summary procurement guidelines for w cs intended for use in motor vehicles
Summary:Procurement Guidelines for W/cs intended for use in motor vehicles
  • When appropriate, recommend W/cs that comply with ISO 7176/19, or equivalent national standards,
  • Request test reports along with pre-sale literature,
  • Verify appropriate labeling on W/c,
  • Awareness of instructions and warnings in user manual,
  • Take time to understand the warnings and installation/usage recommendations.
wheelchair transport standards
Wheelchair Transport Standards
  • More transport standards info:
    • www.wheelchairstandards.pitt.edu
    • Click on: W/c Transport Stds. Section
  • FAQs on Transport Safety (>50)
    • www.rercwts.pitt.edu
    • Click on: FAQ
why standards cont
Why standards?-cont.
  • To provide:
  • wheelchair users with the opportunity to use equipment that is comparable in design and performance to vehicle seats and restraint systems available to able-bodied travelers for whom the OEM equipment is safety regulated.
  • where equipment refers to:
  • seats (wheelchairs),
  • seat securement systems, and
  • occupant-restraint systems
wtors procurement guidance
WTORS Procurement Guidance
  • Purchase contingent upon compliance with ISO10542 or SAEJ2249/CSA-Z605
  • Dynamic sled tested:
    • 20g/30 mph-results comply with std. limits
    • obtain pre-sale literature/lab reports
  • Verify labeling on WTORS product (stds. compliance)
  • Installation instructions included (and used)
part 19 performance requirements cont
Part 19: Performance Requirements -cont.
  • wheelchair must be “successfully” crash tested at 30-mph, 20-Gs using:
    • a surrogate four-point, strap-type tiedown
    • an appropriate size crash dummy