as 4684-2009 high chairs—safety requirements

AS 4684—2009

Australian Standard®

High chairs—Safety requirements

AS

46

84

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9

This Australian Standard® was prepared by Committee CS-003, Safety Requirements for Children’s Furniture. It was approved on behalf of the Council of Standards Australia on 25 June 2009. This Standard was published on 11 August 2009.

The following are represented on Committee CS-003:

• Australian Chamber of Commerce and Industry • Australian Competition and Consumer Commission • Australian Industry Group • Australian Retailers Association • Commercial Furniture Industry Association of Australia • Consumer Affairs Victoria • CHOICE • Consumers Federation of Australia • Department of Health (South Australia) • Department of Tourism, Fair trading and Wine Industry Development, Qld • Furntech • Infant Nursery Products Association of Australia • Office of Fair Trading Department of Commerce, NSW • Westmead Children’s Hospital

This Standard was issued in draft form for comment as DR 05503. Standards Australia wishes to acknowledge the participation of the expert individuals that contributed to the development of this Standard through their representation on the Committee and through the public comment period.

Keeping Standards up-to-date Australian Standards® are living documents that reflect progress in science, technology and systems. To maintain their currency, all Standards are periodically reviewed, and new editions are published. Between editions, amendments may be issued. Standards may also be withdrawn. It is important that readers assure themselves they are using a current Standard, which should include any amendments that may have been published since the Standard was published. Detailed information about Australian Standards, drafts, amendments and new projects can be found by visiting www.standards.org.au Standards Australia welcomes suggestions for improvements, and encourages readers to notify us immediately of any apparent inaccuracies or ambiguities. Contact us via email at [email protected], or write to Standards Australia, GPO Box 476, Sydney, NSW 2001.

The Standard is downloaded from www.bzfxw.com Standard Sharing

AS 4684—2009

Australian Standard®


First published as AS 4684—2009.

COPYRIGHT

© Standards Australia

All rights are reserved. No part of this work may be reproduced or copied in any form or by

any means, electronic or mechanical, including photocopying, without the written

permission of the publisher.

Published by Standards Australia GPO Box 476, Sydney, NSW 2001, Australia

ISBN 0 7337 9219 7

AS 4684—2009 2

PREFACE

This Standard was prepared by the Australian members of the Joint Standards

Australia/Standards New Zealand Committee CS-003, Safety Requirements for Children’s

Furniture. After consultation with stakeholders in both countries, Standards Australia and

Standards New Zealand decided to develop this Standard as an Australian Standard rather

than an Australian/New Zealand Standard.

Compliance with this Standard does not guarantee compliance with ASTM F404, ISO 9221,

Parts 1 and 2 and EN 14988, Parts 1 and 2 and vice versa. Additional requirements in this

Standard include a more effective restraint system incorporating a crotch restraint plus

some specific local marking requirements.

The terms ‘harness’ and ‘restraint’ can be used interchangeably to mean an assembly of

straps round the torso and over the shoulder serving to retain the child in the chair.

The objective of this Standard is to provide regulatory authorities with essential safety

requirements for high chairs used in domestic situations, restaurants, nurseries and

institutions, and to provide manufacturers with functional durability, stability and

performance criteria to meet these safety requirements, in order to reduce the likelihood of

deaths or injuries to children using high chairs caused by, but not limited to, falls or

strangulation.

The requirements for the restraint system are intended to reduce the hazards associated with

high chair use by preventing the child standing in, or sliding under, the harness and falling or

slipping out of the high chair. The crotch restraint is intended to prevent the child

manoeuvring a leg across the seat so that both legs occupy the same leg hole and thus being

able to slide under the harness.

The term ‘normative’ has been used in this Standard to define the application of the

appendix to which it applies. A normative appendix is an integral part of a Standard.


3 AS 4684—2009

CONTENTS

Page

1 SCOPE........................................................................................................................ 4

2 REFERENCED DOCUMENTS.................................................................................. 4

3 DEFINITIONS............................................................................................................ 4

4 HIGH CHAIR COMPLIANCE................................................................................... 4

5 MIGRATION OF CERTAIN ELEMENTS................................................................. 5

6 OCCUPANT RETENTION BY SAFETY RESTRAINT............................................ 5

7 STABILITY................................................................................................................ 7

8 CASTORS OR GLIDES ............................................................................................. 7

9 PACKAGING AND INFORMATIVE LABELLING ................................................. 7

10 MARKING ................................................................................................................. 9

APPENDICES

A TEST FOR THE LOCATION OF THE CROTCH RESTRAINT.............................. 11

B DETERMINATION OF STRENGTH OF RESTRAINTS AND ATTACHMENTS

FOR RESTRAINTS .................................................................................................. 14

C TEST FOR STABILITY............................................................................................ 19

AS 4684—2009 4

© Standards Australia www.standards.org.au

STANDARDS AUSTRALIA

Australian Standard


1 SCOPE

This Standard specifies safety requirements for freestanding high chairs. These

requirements include design, construction, performance, labelling and marking. The

Standard is applicable to high chairs that may be converted to low chairs, and reclining

chairs. When a chair is convertible to other purposes these additional functions are not

covered by this Standard.

The Standard does not deal with accidents or injuries that might result from the interaction

of older children with children in the high chair or accidents that might result from abuse or

misuse by persons over three years of age.

2 REFERENCED DOCUMENTS

The following Standards are referred to in this Standard:

AS/NZS ISO

8124 Safety of toys

8124.3 Part 3: Migration of certain elements

ISO

9221 Furniture—Children’s high chairs

9221-1 Part 1: Safety requirements

9221-2 Part 2: Test methods

ASTM

F404 Standard consumer specification for high chairs

EN

14988 Children’s high chairs

14988-1 Part 1: Safety requirements

14988-2 Part 2: Test methods

3 DEFINITIONS

For the purpose of this Standard the definitions below apply.

3.1 Quick-release mechanism

A securing device that is released by the application of one force acting in one direction.

3.2 Structural failure

Observed breakage or failure that prevents operation or affects safety as required by this

Standard or the relevant parts of the applicable Standard. These could be the ISO, EN or

ASTM standard as specified in Clause 4.

4 HIGH CHAIR COMPLIANCE

In addition to Clauses 5, 6, 7, 8, 9 and 10 high chairs shall comply with at least one of the

following Standards:

(a) ISO 9221, Parts 1 and 2.


5 AS 4684—2009

www.standards.org.au © Standards Australia

(b) ASTM F404.

(c) EN 14988, Parts 1 and 2.

In case of conflict between the requirements in one of the above Standards and the

requirements of this Standard, the requirements in this Standard shall be fully complied

with.

5 MIGRATION OF CERTAIN ELEMENTS

All material and coatings that are capable of being sucked, licked, mouthed, swallowed or

handled when the child is restrained in the high chair shall comply with the maximum

acceptable levels of element migration when tested in accordance with

AS/NZS ISO 8124.3.

6 OCCUPANT RETENTION BY SAFETY RESTRAINT

6.1 General requirements

The following requirements and recommendation apply:

(a) High chairs shall have an integral, permanently attached restraint system that can be

adjusted to prevent the child standing in, or slipping out of, the chair. The harness

should be able to be adjusted to fit the range of occupants for whom the chair is

designed. Typical restraint systems are a 5-point harness, or a full body harness.

Typical examples are given in Figures 1 and 2.

(b) When correctly fitted to the child, the harness shall restrain the child in the

designated seating or reclining position.

NOTE: In ASTM F404, this safety restraint section replaces ASTM clauses titled ‘Restraint

System’ and ‘Passive Crotch Restraint’ and the associated test requirements.

(c) The buckling device of any safety restraint system shall not include a quick-release

mechanism, and shall be constructed so as to prevent removal of the buckling device

from the strap.

6.2 Waist straps

Waist straps shall have a minimum width of 20 mm.

Waist straps and fittings for waist straps shall be secured to the frame of a high chair either

directly or by their securement to the seat, which shall be secured to the frame of the high

chair in such a way that the seat cannot be pulled away from the frame of the high chair by

pulling the restraint straps.

6.3 Shoulder straps

Shoulder straps shall have a minimum width of 15 mm and shall comply with either of the

following:

(a) Shoulder straps shall meet the seat back with a maximum distance of 150 mm

between their inside edges at the point at which they meet the seat back.

(b) Shoulder straps shall be attached to an adjustable strap that is incorporated with the

front waist strap so as to encircle the child’s torso. The shoulder straps shall be joined

and shall meet the part of the strap that is adjacent to the child’s back in such a way

that the straps do not fall off the occupant’s shoulder.

NOTE: The intention is to prevent shoulder straps falling off the occupants shoulders but allow

forward movement.

AS 4684—2009 6


Secur ingpoint

Secur ingpoint

Secur ingpoint

Secur ingpoint

Secur ingpoint

Secur ingpoint

Secur ingpoint

Secur ingpoint

Secur ingpoint

Secur ingpoint

FIGURE 1 EXAMPLES OF 5-POINT HARNESS ASSEMBLY

Posit ioningor secur ingpoints

Secur ing point

Secur ingpoint

Secur ingpoint

Tr i g l iders sty lestrap adjustment

Shoulder Straps

Waist Strap

CrotchRestra int

(Strap)

Loose endfor strap

adjustmenti f v ia buckle

tongue

FIGURE 2 EXAMPLE OF A FULL BODY HARNESS


7 AS 4684—2009


6.4 Crotch restraint

The crotch restraint shall have a minimum width of 20 mm.

When determined in accordance with Appendix A, the test gauge shall touch the crotch

restraint.

If the crotch restraint is a strap, one end shall be linked to the front waist strap and the other

end shall be secured to the seat. In case of the body harness, one end of the crotch strap

shall be linked to the front waist strap and the other end secured to the rear waist strap or to

the seat.

6.5 Occupant retention—Performance of safety restraint

When determined in accordance with Appendix B, all components of the restraint system

shall show no signs of structural failure, waist and shoulder straps and crotch restraint shall

not become unfastened, and any slippage of adjustable straps shall be not more than 6 mm.

7 STABILITY

When tested in accordance with Appendix C the high chair shall not tip over. The high

chair shall be tested in all possible configurations of use and with any accessory supplied or

recommended by the manufacturer that is likely to reduce stability.

8 CASTORS OR GLIDES

When castors or glides are provided, these shall be limited to one of the following

arrangements:

(a) Two castors.

(b) Two glides.

(c) Two castors, both having brakes, and two glides.

(d) Four castors, of which at least two have brakes.

9 PACKAGING AND INFORMATIVE LABELLING

9.1 General

Packages that are intended to be opened by the consumer shall be so constructed as to

minimize the hazards from fasteners during the opening process.

9.2 Flexible plastics packaging

9.2.1 Large packaging

Where the flexible plastics packaging is in the form of a bag or in the form of wrapping that

when removed from the package is capable of being formed into a bag that has, or is

capable of having, an opening with a circumference of 350 mm or more and a depth of 130

mm or more, both dimensions being measured after the packaging has been stretched to its

fullest extent, then the packaging shall either—

(a) be perforated with round holes of at least 5 mm in diameter, or other shaped holes of

equivalent area, so that when the whole of a square test template, measuring 150 mm

along each side, is placed anywhere on the packaging, the template will completely

cover at least one hole; or

(b) be made from a plastics material that has a thickness of 38 µm or more and carry a

legible cautionary label similar to the following:

AS 4684—2009 8


WARNING: TO AVOID DANGER OF SUFFOCATION TO BABIES AND

CHILDREN DISPOSE OF THIS BAG IMMEDIATELY.

NOTES:

1 The purpose of this Clause is to ensure that either—

(a) there is a sufficient number of holes in the flexible plastics packaging to prevent the

possibility of suffocation; or

(b) the suffocation hazard is highlighted by way of a warning notice if the packaging does

not have a sufficient number of holes. (A minimum number of plastics is also required

to reduce the tendency of the plastics to conform to a child’s face and so obviate a

suffocation hazard. See the note in Clause 9.2.2.)

2 Referring to the warning notice in Clause 9.2.1(b), since the wording on the cautionary label

is only an example, it is permissible to use other words, e.g. ‘CAUTION’ in place of

‘WARNING’.

In addition to the information on the cautionary label, the following or similar statement may

be included:

‘Tie into knots or shred plastics before storing for recycling or disposing in

rubbish bins. Do not burn plastics.’

9.2.2 Small packaging

Where the flexible plastics packaging is in the form of a bag or in the form of wrapping

that, when removed from the package, is capable of being formed into a bag, which has or

is capable of having an opening with a circumference of less than 350 mm and/or a depth of

less than 130 mm, both dimensions being measured after the packaging has been stretched

to its fullest extent, then it is recommended that the packaging be made from a plastics

material that has a thickness of 19 µm or more.

NOTE: A minimum thickness of 19 µm is recommended because the thinner the plastics, the

greater is its tendency to conform to contours, such as a child’s face. Further, thin plastics often

has a static charge that causes the plastics to adhere to skin. Accordingly, the combination may

present a suffocation danger even though the packaging may be relatively small.

9.3 Printed instructions

Printed instructions shall be supplied with the high chair for its safe use, operation and

maintenance. Such instructions shall be in English, but this shall not prohibit the additional

use of other languages or the use of diagrams.

NOTES:

1 It is important that simple language is used in instructions.

2 Manufacturers making a statement of compliance with this Australian Standard on a product,

packaging or promotional material related to that product are advised to ensure that such

compliance is capable of being verified.

Instructions for safe use shall include the following:

(a) The warning specified in Clause 10.1(e).

(b) Warnings for the use of the safety restraint and instructions for its use accompanied

by diagrams, that clearly show the correct fitting method of adjustment.

(c) Instructions for assembly, erection, adjustment, folding and storage of the high chair

accompanied by diagrams.

(d) Advice to use the high chair on a flat, even and horizontal floor and not to elevate the

high chair on any structure or table.

(e) To reduce the risk of injury, advice shall be provided to position the high chair away

from furniture, walls, hot surfaces and liquids, window covering cords, and electrical

cords and position the high chair away from furniture when the chair is not being

used at a table with a tray removed.


9 AS 4684—2009


(f) Advice that the high chair should only be used in an upright position once the child is

capable of reliably and consistently sitting upright.

(g) Advice on the maximum mass of the child.

(h) Advice on regular inspection and maintenance.

(i) Advice not to use the high chair if it is not working correctly and that the owner

should seek repair.

(j) Advice to apply wheel locks/brakes when not moving the high chair.

(k) Any other necessary information related to safe usage.

10 MARKING

10.1 General

High chairs shall be permanently and conspicuously marked with the following:

(a) The registered trade name or trademark of the manufacturer or the distributor or

registered company name.

(b) The model name or number.

(c) Month and year of manufacture. Examples of acceptable marking are September

2009, Sept 2009 or 9/2009.

NOTE: This does not preclude the addition of the day of manufacture.

(d) Reference to—

(i) this Standard, i.e. AS 4684—2009; and

(ii) the standard used as specified in Clause 4, and the associated year of its

publication

NOTES:

1 As this Standard modifies the other standards in Clause 4, compliance to these

standards may no longer be applicable or possible.

2 Manufacturers making a statement of compliance with this Standard on a product,

packaging, or promotional material related to that product are advised to ensure

that such compliance is capable of being verified.

(e) A notice in a prominent position, e.g. the back of the high chair backrest bearing the

following:

WARNING:

• FOLLOW THE MANUFACTURER’S INSTRUCTIONS.

• DO NOT LEAVE CHILDREN UNATTENDED.

• THE HARNESS MUST ALWAYS BE USED AND CORRECTLY FITTED—MOST

INJURIES FROM HIGH CHAIRS ARE CAUSED BY FALLS.

• POSITION THE HIGH CHAIR AWAY FROM SOLID STRUCTURES AND

BENCHES TO AVOID INJURIES CAUSED BY FALLS AND BY ACCESS TO

DANGEROUS ITEMS.

(f) A notice permanently attached on the harness, as follows:

WARNING: USE THIS HARNESS AT ALL TIMES.

AS 4684—2009 10


10.2 Legibility of marking

Wording shall be clearly legible in monoline; geometric lineale typeface of medium width

letters not less than 2.5 mm high (see Note). The word ‘WARNING’ shall be in bold, upper

case typeface.

NOTE: Typeface descriptions of ‘monoline’, ‘geometric’, ‘lineale’ and ‘medium width’ are

defined as follows:

(a) Monoline—any typeface in which all strokes of the letters are apparently of equal thickness.

(b) Geometric—lineale typefaces constructed on simple geometric shapes, circle or rectangle.

(c) Lineale—typefaces without serifs (formerly called ‘sans serif’).

(d) Medium width—the width that the manufacturer (of the type) puts forward under the name

of the family (i.e. the group of typefaces that are derived from one basic design) as

representing the design in that normal width from which variants in the family have been or

may be derived.

10.3 Durability of marking

Labels shall show no curling, and the wording shall be easily legible when rubbed by hand

for 15 seconds with a piece of cloth soaked in water, allowed to dry and rubbed for

15 seconds with a piece of cloth soaked with concentrated liquid detergent having the

following active ingredients:

(a) Sodium dodecyl benzine sulfonate ..................................25%.

(b) Sodium dodecyl ether sulfate ........................................... 5%.

(c) Sodium xylene sulfonate .................................................. 3%.

An example of a suitable detergent is dishwashing detergent.


11 AS 4684—2009


APPENDIX A

TEST FOR THE LOCATION OF THE CROTCH RESTRAINT

(Normative)

A1 SCOPE

This Appendix sets out the method of testing the location of the crotch restraint on the high

chair seating surface.

A2 PRINCIPLE

A gauge in Figure A1 is used to determine the maximum distance from the high chair

backrest.

A3 APPARATUS

A gauge as shown in Figure A1 is required.

60˚

75˚

180

Rigid f lat material 10 mm thick

90

30

R10 typ.

220

2.0

01

R10 typ.

DIMENSIONS IN MILLIMETRES

FIGURE A1 GAUGE FOR CROTCH RESTRAINT POSITION

A4 PROCEDURE

The procedure shall be as follows:

(a) The high chair shall be erected, placed on a horizontal surface and the backrest placed

in its most upright position as per the manufacturer’s instructions.

(b) If the crotch strap position on the seating surface of the high chair is adjustable then it

shall be positioned so as the distance would give the greatest distance from the back

rest.

(c) Where the crotch strap is flexible or pivotable, the crotch restraint shall be held

approximately perpendicular to the seating surface.

AS 4684—2009 12


(d) Place the gauge shown in Figure A1 perpendicular to the seat backrest as shown in

Figure A2 and in contact with the backrest and the seating surface without

compressing any padding.

(e) Should the gauge touch the crotch restraint the distance is assumed to be less than the

maximum distance. Should the gauge not touch the crotch restraint then the distance

between the high chair backrest and the crotch restraint would be greater than the

specified maximum distance.

High chai r seat back

High cha i r seat back

High cha i r seat back

High cha i r seat ing sur face

Crotch restra int

Crotch restra int

Crotch restra int



FIGURE A2 GAUGE POSITION ON THE SEATING SURFACE


13 AS 4684—2009


A5 REPORT

The following shall be reported:

(a) The identity of the high chair.

(b) Whether the gauge touched the crotch restraint or not.

(c) A reference to this method, i.e. AS 4684, Appendix A.

AS 4684—2009 14


APPENDIX B

DETERMINATION OF STRENGTH OF RESTRAINTS AND ATTACHMENTS

FOR RESTRAINTS

(Normative)

B1 SCOPE

This Appendix sets out a method of testing restraints and their attachments.

B2 PRINCIPLE

Defined forces are applied separately to the restraint fittings and to the crotch, waist and

shoulder straps for a specified time. All the straps are then fastened and subjected to tension

for a specified time. The restraint system is then examined for any signs of damage.

B3 APPARATUS

The following apparatus is required:

(a) Means of applying a tensile force of 150 ±5 N, e.g. a mass of 15 kg.

(b) Cylinder, 25 mm in diameter and 250 mm in length, with a cord attached at each end.

(c) Means of applying a tensile force of 300 ±10 N, e.g. a mass of 30 kg.

(d) Means of marking the position of any adjusters on the straps.

(e) Suitable timing device.

(f) Means of measuring length in millimetres.

(g) Cord not greater than 5 mm in diameter and fashioned so that it can be attached to a

strap or restraint attachment.

B4 PROCEDURE


(a) Secure the chair.

(b) If straps are adjustable, mark the position of any adjusters.

(c) Apply a force of 150 ±5 N (B3(a)), as numbered from 1 to 8 in Figure B1, to the

restraint fitting on each strap, to the end of each strap that does not have a restraint

fitting, and to the crotch bar (if one is present).

If the tester judges that applying the force in a particular direction is most likely to

cause damage or failure to a particular component of the restraint system, the force

shall be applied in that direction and held for 5 minutes. The force shall then be

applied to the same component in the opposite direction and held for 5 minutes.

If the direction most likely to cause damage or failure to a particular component is not

obvious to the tester, the force should be applied to each such component in three

directions that are mutually at right angles, and held for 5 minutes in each direction.

(see Figure B1).

(d) Place the cylinder (B3(b)) behind the crotch restraint as shown in Figure B2, and

apply a force of 300 ±10 N (B3(c)) horizontally to the attached cord in the direction

shown in Figure B2. Hold the force for 5 min.


15 AS 4684—2009


(e) Fasten the waist straps in accordance with the manufacturer’s instructions. Remove

the crotch strap and shoulder straps from the waist straps or adjust them so that they

do not bear a load during the test. Using the cylinder (B3(b)), subject the fastening to

a force of 300 ±10 N (B3(c)) applied horizontally for 5 min in the direction shown in

Figure B3.

(f) Fasten the shoulder straps in accordance with the manufacturer’s instructions. Using

the cylinder (B3(b)), subject each fastening to a force of 150 ±5 N (B3(a)) applied

horizontally for a period of 5 min as shown in Figure B4(a).

Using the cylinder (B3(b)), subject both fastenings to a force of 150 ±5 N (B3(a))

applied vertically upwards for 5 min as shown in Figure B4(b).

(g) Following removal of test force, mark the position of any adjusters and measure any

slippage that has occurred, in millimetres.

B5 REPORT



(b) A description of any configuration in which the high chair was tested.

(c) Visible signs of damage to any component of the restraint system.

(d) Whether the waist, shoulder and crotch straps remained fastened.

(e) Any slippage of adjustable straps.

(f) A reference to this test method, i.e. AS 4684, Appendix B.

150 N

24

8

5

31

6

7

150 N

150 N

150 N

150 N150 N

150 N

150 N

FIGURE B1 TEST FOR RESTRAINT ATTACHMENTS AND

UNFASTENED WAIST STRAPS

AS 4684—2009 16


(a) Crotch strap that is attached at oneend to a waist strap

300 N Pul l

(b) Crotch strap that is attached at oneend to a r ig id bar

300 N Pul l

FIGURE B2 TEST FOR CROTCH STRAPS


17 AS 4684—2009


300 N Pull

FIGURE B3 TEST FOR FASTENED WAIST STRAPS

AS 4684—2009 18


150 N Pul l

(a)

(b)

150 N Pul l

FIGURE B4 TEST FOR FASTENED SHOULDER STRAPS


19 AS 4684—2009


APPENDIX C

TEST FOR STABILITY

(Normative)

C1 SCOPE

This Appendix sets out a method of determining the stability of a high chair.

C2 PRINCIPLE

In order to determine the level of acceptable stability, the high chair is subjected to loading

including testing for stability sideways, rearwards, forward, as well as loading on the

footrest and tray. This test is the same as required by EN 14988-2:2006 for stability of the

high chair and tray.

C3 APPARATUS

The following apparatus is required:

(a) A floor surface that is horizontal, flat and rigid with a smooth surface.

(b) A beam 900 ±5 mm long with a mass of 0.5 ±0.01 kg made of suitable rigid material,

e.g. aluminium or wood.

(c) Weights or force gauge capable of applying a force of 5 N, 25 N, 150 N and 200 N to

within 5%.

(d) Suitable means of retaining the beam and facilitating the application of the force.

NOTE: It is recommended to use fixings that are as light as possible, e.g. string, thus ensuring

minimum influence on the vertical force.

(e) Stops to prevent the high chair from sliding but not tilting, which are no higher than

12 mm except in cases where the design of the high chair necessitates the use of

higher stops, in which case the lowest stops that will prevent the high chair from

sliding shall be used.

(f) A 5 ±0.025 kg test mass consisting of a cylinder 100 mm diameter made of suitable

dense material, e.g. steel.

(g) A loading pad being a rigid cylindrical object 100 ±1 mm in diameter having a

smooth hard surface and rounded edges with radius of 12 mm.

C4 PROCEDURE


(a) The tests shall be carried out in indoor ambient conditions, but if during a test the

temperature is outside the range 15°C to 25°C, the maximum and minimum

temperatures shall be recorded in the test report.

(b) The high chair shall be tested as delivered. If the high chair requires assembly then it

shall be assembled according to the manufacturer’s instructions supplied with the

high chair. All adjustments and folding and unfolding shall be in accordance with the

supplied instructions. If the high chair can be assembled or combined in different

ways or if components can be adjusted, the most adverse combination or adjustment

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. If accessories are provided or recommended in the instructions then

AS 4684—2009 20


stability testing shall be performed with and without the accessories fitted. Where

swivel wheels or castors are used they shall be positioned so as to reduce the level of

stability. In the case of designs not catered for in the test procedures, the tests shall be

carried out as far as possible as described, and deviations from the test procedure

recorded in the test report.

(c) Place the high chair on the floor surface.

(d) If the high chair is likely to slide or roll during the test, place stops against the

appropriate leg or legs.

(e) To test the sideways stability, position the beam above the lateral centre-line of the

seat and resting on the armrest or side lateral support structure, so that the beam is

balanced. The seat shall not be loaded for this test.

The beam and its fixings shall be positioned so that it has no influence on the stability

of the high chair.

(f) Apply a downward vertical force of 150 N to the beam at a distance of 140 mm

horizontally outwards from the inside edge of one armrest or lateral support structure

of the high chair. See Figure C1.

(g) Note whether the high chair tips over.

(h) To test the rearwards stability, position the beam on the centre-line of the backrest, so

that the beam is balanced. The seat shall not be loaded for this test.

The beam and it is fixings shall be positioned so that it has no influence on the

stability of the high chair.

(i) Apply a downward vertical force of 150 N to the beam at a distance of 140 mm

horizontally outwards from the centre of the inside edge of the backrest of the high

chair. See Figure C2.

(j) Note whether the high chair tips over.

(k) To test the forward stability, place the 5 kg test mass (C3(f)) at the centre-line of the

seat with its centre of gravity 80 mm from the front edge of the seat. If the front edge

of the seat is made of a flexible material, measure the distance when the front edge is

under a force of 5 N inwards.

(l) Apply a force of 25 N outwards at the uppermost front part of the high chair. If a tray

is fitted the force shall be applied to the outer edge of the tray. See Figure C3.

(m) Note whether the high chair tips over.

(n) To test the stability of the footrest and horizontal frame member, remove any

detachable tray, and, with the high chair unloaded, apply a vertically downward force

of 200 N through the loading pad.

The force is applied to the footrest or horizontal member through the centre of the

loading pad positioned 25 mm from the outer edge. If the footrest or horizontal

member is less than 50 mm wide, apply the force at the centre. If the footrest or

horizontal member has a structure that limits the above positioning of the loading

pad, then the load shall be applied to the centre of the projected area of contact

between the loading pad and footrest or horizontal member, with the loading pad as

rearward as possible. See Figure C4.

(o) Note whether the high chair tips over.

(p) Repeat Steps (n) and (o) to any horizontal frame member most likely to cause tipping

over.


21 AS 4684—2009


(q) To test the tray stability, apply a vertical force of 200 N at the geometric centre of the

tray and maintain for 1 minute. The seat shall not be loaded for this test. See Figure

C5.

(r) Note whether the high chair tips over.

C5 REPORT



(b) A description of the configurations in which the high chair was tested.

(c) Whether the high chair tipped over under any of the tests.

(d) A reference to this test method, i.e. AS 4684, Appendix C.

150 N

140 mm

FIGURE C1 SIDEWAYS STABILITY

150 N

140 mm

FIGURE C2 REARWARDS STABILITY

AS 4684—2009 22


25 N

80 mm

FIGURE C3 FORWARDS STABILITY

200 N

25 mm

FIGURE C4 FOOTREST AND HORIZONTAL MEMBER STABILITY

200 N

= =

FIGURE C5 TRAY STABILITY


23 AS 4684—2009

NOTES

AS 4684—2009 24

NOTES


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as 4684-2009 high chairs—safety requirements

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