ISO 9221-2:2015

INTERNATIONAL ISO
STANDARD 9221-2
Second edition
2015-11-01
Furniture — Children’s high chairs —
Part 2:
Test methods
Ameublement — Chaises hautes pour enfants —
Partie 2: Méthodes d’essai
Reference number
©
ISO 2015
© ISO 2015, Published in Switzerland
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ii © ISO 2015 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General test conditions . 2
4.1 Preliminary preparation . 2
4.2 Determination of the junction line . 2
4.3 Test sequence . 3
4.4 Tolerances . 4
5 Test equipment. 4
5.1 General . 4
5.2 Test dummy . 4
5.3 Impact hammer . 5
5.4 Loading pad . 6
5.5 Small loading pad. 6
5.6 Stops . 7
5.7 Floor surface . 7
5.8 Beams . 7
5.8.1 Beam for stability test and for measurement of the lateral protection length . 7
5.8.2 Beam for height of lateral protection test . 7
5.9 Slide gauges . 7
5.10 Force-measuring device . 8
5.11 Test load . 8
5.12 Small parts cylinder . 8
5.13 Small torso probe . 9
5.14 Device for measuring the angle, the length and the height of the backrest and the
height of the lateral protection .10
5.15 Leg probe .11
5.16 Wedge block .11
6 Test procedures .12
6.1 General .12
6.2 Impact test .12
6.3 Durability of the locking mechanism .13
6.4 Strength of the locking mechanism .13
6.5 Small parts .13
6.6 Openings .14
6.6.1 Openings between moving parts .14
6.6.2 Other openings .14
6.7 Strength of harness/belt attachment points .14
6.8 Strength of components of the restraint system .14
6.9 Slippage of straps of the restraint system .14
6.10 Backrest tests .15
6.10.1 Determination of backrest angle .15
6.10.2 Determination of backrest height .15
6.10.3 Determination of length of reclinable backrest .15
6.10.4 Strength of reclinable backrest mechanism .15
6.11 Seat vertical static load test .15
6.12 Footrest vertical static load test .15
6.13 Lateral protection measurements .16
6.13.1 Determination of lateral protection height .16
6.13.2 Determination of lateral protection length .16
6.14 Leg openings test .18
6.14.1 Wedge block test .18
6.14.2 Gaps between leg openings .18
6.15 Measurement of the distance between the backrest and the crotch restraint .18
6.16 Measurement of the distance between the backrest and the horizontal member .19
6.17 Stability tests .19
6.17.1 General.19
6.17.2 Positioning .19
6.17.3 Sideways stability . . .20
6.17.4 Rearwards stability . .20
6.17.5 Forwards stability .21
6.17.6 Footrest and horizontal frame member stability.22
6.18 Tray tests .23
6.18.1 Tray strength test .23
6.18.2 Tray vertical static load test and stability .23
6.18.3 Tray drop test .24
7 Test report .24
iv © ISO 2015 – All rights reserved

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).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 136, Furniture.
This second edition cancels and replaces the first edition (ISO 9221-2:1992), which has been
technically revised.
ISO 9221 consists of the following parts, under the general title Furniture — Children’s high chairs:
— Part 1: Safety requirements
— Part 2: Test methods
Introduction
This part of ISO 9221 has been prepared in order to specify test methods to provide assurance that
children’s high chairs comply with the requirements in ISO 9221-1.
The tests are designed to evaluate properties without regard to materials, design/construction, or
manufacturing processes.
vi © ISO 2015 – All rights reserved

INTERNATIONAL STANDARD ISO 9221-2:2015(E)
Furniture — Children’s high chairs —
Part 2:
Test methods
1 Scope
This part of ISO 9221 specifies test methods for the assessment of the requirements of children’s high
chairs.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 7619-2, Rubber, vulcanized or thermoplastic — Determination of indentation hardness — Part 2: IRHD
pocket meter method
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
children’s high chair
free standing chair that elevates the child to approximately dining table height, intended for holding the
child from 6 months to 36 months of age who is capable of remaining in a sitting position due to his or
her own coordination
3.2
crotch restraint
strap or bar passing between the legs of the child which prevents the child from slipping forward out of
the high chair
3.3
integral harness
assembly intended to retain the child in the high chair comprising either a crotch restraint, waist strap
and shoulder straps or comprising straps that pass over the child’s shoulders and between the child’s legs
3.4
waist belt
strap, which when fastened, fully surrounds the child’s waist
3.5
waist strap
strap, which when fastened, goes from one side of the child to the other passing in front of the child’s waist
3.6
opening
space between structural members or components
3.7
shear and squeeze points
gaps which can cause harm to parts of the body and which occur when two parts close together or open
during relative movements
3.8
locking device
device which is mounted on a frame and which will maintain parts of the frame in position of use
3.9
locking mechanism
mechanism composed by a locking device and one or more operating devices
Note 1 to entry: An action deactivates the locking devices, e.g. pushing a button, pressing a lever or turning a knob.
3.10
junction line
intersection of the seat and the backrest
Note 1 to entry: See Figure 1.
Note 2 to entry: The method for determining the junction line can be found in 4.2.
4 General test conditions
4.1 Preliminary preparation
The tests are designed to be applied to a high chair that is fully assembled according to the
manufacturer’s instructions and ready for use.
If the product can be converted to other products not falling within the scope on this part of ISO 9221
(e.g. table and small chair, adult chair, swings, booster seats, etc.), these configurations shall not be
tested according to this part of ISO 9221.
The tests shall be carried out in indoor ambient condition with a temperature between 15 °C and 25 °C. If
the temperature lies outside this range, its maximum and minimum shall be recorded in the test report.
The high chair shall be tested as delivered. If the high chair is a knock-down type, it shall be assembled
according to the instructions supplied with it. If the instructions allow for different adjustments or
configurations of components (e.g. inclination of the backrest, height of the seat, position of the tray,
position of castors/wheels, etc.), the most onerous combination shall be used for each test.
Knock-down fittings shall be tightened before testing. Further re-tightening shall not take place unless
this is specifically required by the manufacturer’s instructions.
4.2 Determination of the junction line
The junction line is shown in Figure 1.
Where the backrest and the seat do not meet, the junction line is the projection of the backrest onto the
seat (see Figure 1).
2 © ISO 2015 – All rights reserved

Key
LL junction line
1 backrest
2 seat
Figure 1 — Junction line
When the seat unit is in the form of a hammock, then a theoretical junction line, “LL”, is determined as
shown in Figure 2. The junction line may vary when the backrest is adjusted in different positions.
Key
AA top edge of the backrest
BB front edge of the seat
LL junction line
CL vertical projection of C on the hammock
Figure 2 — Junction line for seat units in form of a hammock
4.3 Test sequence
All tests shall be carried out on one sample and in the order laid down in this part of ISO 9221 except for
the test in 6.9, which shall be performed at the end of the whole test procedure.
4.4 Tolerances
Unless otherwise stated, the following tolerances apply:
— Forces: ±5 %;
— Masses: ±0,5 %;
— Dimensions: ±1,0 mm;
— Angles: ±2°;
— Positioning of loading pads: ±5 mm.
The forces may be replaced by masses. The relationship of 10 N = 1 kg shall be used.
5 Test equipment
5.1 General
Unless otherwise specified, test forces may be applied by any suitable device because results are
dependent only upon correctly applied forces and not upon the apparatus.
The test forces in the static load tests shall be applied sufficiently slowly to ensure that negligible
dynamic forces are applied.
5.2 Test dummy
A rigid cylinder 200 mm in diameter and 300 mm in height, having a mass of 15 kg and with its centre
of gravity 150 mm above its base. All the edges of the cylinder shall have a radius of 5 mm. Two safety
harness anchorage points shall be provided. These shall be positioned 150 mm from the base and 180°
to each other around the circumference (see Figure 3).
4 © ISO 2015 – All rights reserved

ISO 9221-2:20
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