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Side-facing wheelchair after a frontal impact test

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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Side-facing wheelchair after a frontal impact test

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  1. Side-facing wheelchair after a frontal impact test

  2. With many wheelchairs, it’s difficult to find four places to attach tiedown straps

  3. 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

  4. 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

  5. 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

  6. must allow a seated posture, with seat and seatback angles <30 degrees to horizontal and vertical, respectively Part 19: Design Requirements

  7. WC/19: Design Requirements Must minimize hard sharp edges

  8. Part 19: Design Requirements-cont. Must provide four accessible attachment points Std. Symbol

  9. Part 19: Design Requirements-cont. Four accessible securement points- --with slot geometry for hook or strap attachment)

  10. Part 19: Design Requirements-cont. Front and rear wheelchair attachment points must be located within specific zones

  11. 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.

  12. 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

  13. 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.

  14. 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

  15. 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

  16. ISO 10542-3 Docking Systems-UDIG Adapter Spec. UDIG Adapter

  17. ISO 10542-3: Docking Systems-UDIG Specification Auto-docking tiedown device

  18. 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??

  19. 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

  20. 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

  21. 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

  22. 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

  23. 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

  24. 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)

  25. 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.

  26. 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

  27. Thank You!

  28. Not Used in Presentation

  29. Powered Docking Tiedown for Disabled Drivers

  30. 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

  31. Installation: Front Tiedown Angles ISO-DIS 10542-2 WTORS

  32. 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)

  33. 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

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