ISO 7176-2:2017 車椅子 — Part 2: 電動車椅子の動的安定性の決定 | ページ 2

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.

The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives ).

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This document was prepared by Technical Committee ISO/TC 173, Assistive products for persons with disability, Subcommittee SC 1, Wheelchairs.

This third edition cancels and replaces the second edition (ISO 7176-2:2001), which has been technically revised.

The main changes compared to the previous edition are as follows:

• revision of ramp requirements;
• provision for remote control testing.

A list of all parts in the ISO 7176 series can be found on the ISO website.

Introduction

It is important to understand the dynamic stability characteristics of a wheelchair for prescription and adjustment purposes. Wheelchair users and prescribers should understand the safety implications of dynamic stability, particularly when setting up seating systems that offer a large range of configurations. They should consider the environment in which the wheelchair is to be used and the hazards that are likely in that environment while considering possible configurations of the wheelchair when meeting those hazards.

This document specifies tests for dynamic stability under a range of operating conditions with various wheelchair configurations. The effectiveness of stability controlling systems are evaluated by the procedures listed in this document.

Wheelchair instability is a significant contributor to accidents causing injury. Consequently, it is desirable that all parties involved in the supply of wheelchairs understand the factors that contribute to instability. Parties interested in this document could be wheelchair designers and manufacturers, prescribers, therapists, building designers, public facility providers and test houses.

The purpose of this document is to define tests that will consistently demonstrate dynamic stability limits under a variety of proven stability challenges. Tests are designed to reveal the effects of adjustments and configurations.

This document will help interested parties define suitable environments and intended use of the wheelchair.

Although this document does not specify requirements, it is an essential reference document for other documents that do specify stability.

1 Scope

This document specifies test methods for determining the dynamic stability of electrically powered wheelchairs.

This document is applicable to electrically powered wheelchairs, including scooters, with a maximum nominal speed not exceeding 15 km/h, intended to carry one person. This document is not applicable to manual wheelchairs with add-on power kits used for, or to assist, propulsion.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements 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

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 7176‑26 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

Bibliography