Technical systems and aids for disabled or handicapped persons -- Wheelchair tiedown and occupant-restraint systems

ISO 10542-4:2004 specifies test methods and requirements for design and performance, instructions to installers and users, and product marking and labelling of wheelchair tiedown and occupant-restraint systems (WTORS). It is applicable only to WTORS that use clamp-type tiedown to secure wheelchairs when used as a forward-facing seat by an adult passenger or driver of a motor vehicle. ISO 10542-4:2004 is applicable primarily to complete WTORS, but a portion of ISO 10542-4:2004 can also be applied to components and sub-assemblies sold separately and for replacement parts. ISO 10542-4:2004 is applicable to WTORS intended for use with all types of manual and powered wheelchairs, including scooters with three or more wheels.

Assistances et aides techniques pour les personnes invalides ou handicapées -- Systèmes d'attache du fauteuil roulant et de retenue de l'occupant

General Information

Status
Withdrawn
Publication Date
30-Sep-2004
Withdrawal Date
30-Sep-2004
Current Stage
6060 - International Standard published
Start Date
16-Aug-2004
Completion Date
01-Oct-2004
Ref Project

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ISO 10542-4:2004 - Technical systems and aids for disabled or handicapped persons -- Wheelchair tiedown and occupant-restraint systems
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INTERNATIONAL ISO
STANDARD 10542-4
First edition
2004-09-15
Technical systems and aids for disabled
or handicapped persons — Wheelchair
tiedown and occupant-restraint
systems —
Part 4:
Clamp-type tiedown systems
Assistances et aides techniques pour les personnes invalides ou
handicapées — Systèmes d'attache du fauteuil roulant et de retenue de
l'occupant —
Partie 4: Systèmes de fixation par crampon
Reference number
ISO 10542-4:2004(E)
ISO 2004
---------------------- Page: 1 ----------------------
ISO 10542-4:2004(E)
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ii ISO 2004 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 10542-4:2004(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies

(ISO member bodies). The work of preparing International Standards is normally carried out through ISO

technical committees. Each member body interested in a subject for which a technical committee has been

established has the right to be represented on that committee. International organizations, governmental and

non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International

Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 10542-4 was prepared by Technical Committee ISO/TC 173, Assistive products for persons with disability,

Subcommittee SC 1, Wheelchairs.

ISO 10542 consists of the following parts, under the general title Technical systems and aids for disabled or

handicapped persons — Wheelchair tiedown and occupant-restraint systems:
— Part 1: Requirements and test methods for all systems
— Part 2: Four-point strap-type tiedown systems
— Part 3: Docking-type tiedown systems
— Part 4: Clamp-type tiedown systems
— Part 5: Systems for specific wheelchairs
ISO 2004 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 10542-4:2004(E)
Introduction

Providing effective crash protection for the wheelchair-seated occupant of a motor vehicle usually requires that

equipment be installed to secure the wheelchair and restrain the occupant of the wheelchair. ISO 10542-1 gives

general requirements for all wheelchair tiedown and occupant-restraint systems (WTORS). The provisions of

ISO 10542-1 apply except as amended and supplemented by this part of ISO 10542 which gives particular

requirements and test procedures for WTORS and their sub-assemblies and components that use a

mechanical clamp-type system to secure the wheelchair in a vehicle.
iv ISO 2004 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 10542-4:2004(E)
Technical systems and aids for disabled or handicapped
persons — Wheelchair tiedown and occupant-restraint
systems —
Part 4:
Clamp-type tiedown systems
1Scope

This part of ISO 10542 specifies test methods and requirements for design and performance, instructions to

installers and users, and product marking and labelling of wheelchair tiedown and occupant-restraint systems

(WTORS).

It is applicable only to WTORS that use clamp-type tiedown to secure wheelchairs when used as a forward

facing seat by an adult passenger or driver of a motor vehicle.

This part of ISO 10542 is applicable primarily to complete WTORS, but a portion of this part of ISO 10542 can

also be applied to components and sub-assemblies sold separately and for replacement parts.

This part of ISO 10542 is applicable to WTORS intended for use with all types of manual and powered

wheelchairs, including scooters with three or more wheels.
2 Normative references

The following referenced documents are indispensable for the application of this document. For dated

references, only the edition cited applies. For undated references, the latest edition of the referenced document

(including any amendments) applies.

ISO 10542-1:2001, Technical systems and aids for disabled or handicapped persons — Wheelchair tiedown

and occupant-restraint systems — Part 1: Requirements and test methods for all systems

3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
clamp-type tiedown

method of wheelchair tiedown or securement that uses only mechanical linkages and/or grips requiring manual

positioning and tensioning of the end fittings to the wheelchair
3.2
wheelchair securement adaptor

hardware that is attached temporarily or permanently to the wheelchair frame to accommodate wheelchair

securement by a wheelchair tiedown
ISO 2004 – All rights reserved 1
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ISO 10542-4:2004(E)
4 Design requirements

The design requirements of ISO 10542-1 apply, together with the additional requirement that clamp-type

wheelchair tiedowns be designed such that securing and releasing the tiedown according to the manufacturer's

instructions shall not require operating forces in excess of
— 60 N for hand-operated devices,
— 100 N for foot-operated devices,
— 2,25 N·m torque for screw-operated clamp-type tiedowns

in order to meet the dynamic performance requirements of 6.1 in ISO 10542-1:2001, as tested in accordance

with Annex A.
NOTE Design recommendations are presented in Annex B of this document.
5 Information, identification and instruction requirements
...

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