GB/T 44083.3-2024Road vehicles - Methods and rules for the evaluation of the usability of child restraint systems and their compatibility with vehicle anchorages - Part 3: Securing and daily maintenance of child occupants in child restraint systems (English PDF)

Foreword

This document was drafted in accordance with the provisions of GB/T 1.1-2020

"Directives for standardization - Part 1: Rules for the structure and drafting of

standardizing documents".

This document is Part 3 of GB/T 44083 "Road vehicles - Method and rules for the

evaluation of the usability of child restraint systems and their compatibility with vehicle

anchorages". GB/T 44083 has published the following parts:

- Part 2: Child restraint systems using vehicle belts;

- Part 3: Securing and daily maintenance of child occupants in child restraint systems;

- Part 4: Booster seat and booster cushion.

This document modifies and adopts ISO 29061-4:2017 "Road vehicles - Methods and

criteria for usability evaluation of child restraint systems and their interface with vehicle

anchorage systems - Part 4: Securing of child in child restraint system and daily

handling aspects".

Compared with ISO 29061-4:2017, this document has made the following structural

adjustments:

- RE-ARRANGE the order of terms in Chapter 3, according to the logical

relationship and order of appearance;

- RE-NUMBER the serial numbers of the tables, merging the Tables 1.1 ~ Table 1.2

and Tables 2.1 in ISO 29061-4:2017 into Table 1 and Table 2, respectively.

The technical differences and reasons between this document and ISO 29061-4:2017

are as follows:

- ADD the normative reference GB 27887 (see Chapter 3), as the source of some

child restraint system related terms;

- USE the normative reference GB/T 44083.2 to replace ISO 29061-3 (see 4.1.1), to

adapt to China's technical conditions and improve operability;

- Some terms and definitions adopt the relevant descriptions in GB 27887 (see 3.1,

3.2, 3.4, 3.5.2), which are consistent with relevant national standards and easy to

understand;

- ADD the terms and definitions of 3.2 about children's harness belts, to facilitate the

understanding and use of other terms.

The following editorial changes have been made to this document:

Road vehicles - Method and rules for the evaluation of the

usability of child restraint systems and their compatibility

with vehicle anchorages - Part 3: Securing and daily

maintenance of child occupants in child restraint systems

1 Scope

This document specifies the usability evaluation requirements for child occupants in

child restraint systems, as well as the daily maintenance of child restraint systems.

This document applies to the usability evaluation of integrated child restraint systems

installed with ISOFIX or vehicle seat belts.

2 Normative references

The contents of the following documents constitute essential clauses of this document

through normative references in the text. Among them, for dated references, only the

version corresponding to that date is applicable to this document; for undated references,

the latest version (including all amendments) is applicable to this document.

GB 27887 Child restraint systems for power-driven vehicles

GB/T 44083.2 Road vehicles - Methods and rules for the evaluation of the usability

of child restraint systems and their compatibility with vehicle anchorages - Part 2:

Child restraint systems using vehicle belts (ISO 29061-3:2017, MOD)

ISO 29061-1 Road vehicles - Methods and criteria for usability evaluation of child

restraint systems and their interface with vehicle anchorage systems - Part 1:

Vehicles and child restraint systems equipped with ISOFIX anchorages and

attachments

3 Terms and definitions

The terms and definitions defined in GB 27887, as well as the following terms and

definitions, apply to this document.

3.1

- Child restraint system instruction manual, including instructional videos;

- Instrument for measuring seat belt tension;

- Child dummies specified in GB 27887, which may also be replaced by suitable

children.

5 Usability evaluation form

The usability evaluation form for the riding and daily maintenance of child occupants

in child restraint systems includes three parts: the evaluation of the child restraint

system itself, the evaluation of the riding of child occupants in the child restraint system,

the comprehensive evaluation. Among them, the evaluation form for the child restraint

......