1、BS ISO 24496:2017 Office furniture Office chairs Methods for the determination of dimensions BSI Standards Publication WB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 24496:2017 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO 24496:2017. It sup
2、ersedes PD ISO/TR 24496:2012 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee FW/0/3, Office Furniture. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all
3、the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017. Published by BSI Standards Limited 2017 ISBN 978 0 580 89005 5 ICS 97.140 Compliance with a British Standard cannot confer immunity from legal obligations. This British
4、Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2017. Amendments/corrigenda issued since publication Date T e x t a f f e c t e dBS ISO 24496:2017 ISO 2017 Office furniture Office chairs Methods for the determination of dimensions Mobilier de bur
5、eau Siges de travail pour bureau Mthodes pour dterminer les dimensions INTERNATIONAL STANDARD ISO 24496 First edition 2017-02 Reference number ISO 24496:2017(E)BS ISO 24496:2017ISO 24496:2017(E)ii ISO 2017 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in Switzerland All rights
6、 reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from eith
7、er ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.orgBS ISO 24496:2017ISO 24496:2017(E)Foreword iv Introduction v 1
8、Scope . 1 2 Normative references 1 3 Terms and definitions . 1 4 General measurement conditions .23 4.1 General 23 4.2 Preliminary preparation 23 4.3 Tolerances 23 4.4 Measurement uncertainty 24 5 Test equipment24 5.1 Floor surface 24 5.2 CMD placement fixture .24 5.3 Chair measuring device (CMD) 26
9、 5.4 High friction material .26 6 Measurement methods and procedures .26 6.1 General 26 6.2 Chair set-up and placement of CMD 26 6.2.1 Chair set-up .26 6.2.2 Initial placement of CMD on chair .27 6.2.3 Final placement of CMD on chair 29 6.3 Measuring procedures .29 6.3.1 Initial chair measurements 2
10、9 6.3.2 Measurements with the chair components adjusted to their minimum positions .39 6.3.3 Measurements with the chair components in their maximum positions 45 6.3.4 Measurements without the CMD in the chair 45 7 Test report 48 Annex A (normative) Drawings and specifications, PDF files for CMD wit
11、h 18 stacked segment lumbar support measurement method .49 Annex B (informative) Anthropometric equivalents of terms and definitions .53 Annex C (informative) Development history and rationale 60 Bibliography .65 ISO 2017 All rights reserved iii Contents PageBS ISO 24496:2017ISO 24496:2017(E) Forewo
12、rd 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 technic
13、al 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 el
14、ectrotechnical 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 wa
15、s 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
16、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 do
17、es not constitute an endorsement. For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Tra
18、de (TBT) see the following URL: w w w . i s o .org/ iso/ foreword .html. This first edition cancels and replaces ISO/TR 24496:2012, which has been technically revised. The committee responsible for this document is ISO/TC 136, Furniture.iv ISO 2017 All rights reservedBS ISO 24496:2017ISO 24496:2017(
19、E) Introduction The test methods in this document are based on the manner in which anthropometric measurements are measured. Therefore, in order to be able to relate the dimensions of office seating to the anthropometric dimensions, a theoretical reference seating posture has been adopted. This post
20、ure does, however, not automatically correspond to the ideal or optimum seating posture. The reference seating posture is as follows: the sole of the foot placed on the floor; the foot forms an angle of approximately 90 with the lower leg; the lower leg is approximately vertical; the lower leg forms
21、 an angle of approximately 90 with the thigh; the thigh is almost horizontal; the thigh forms an angle of approximately 90 with the trunk; the trunk is erect. Further information on the anthropometric dimensions can be found in ISO 7250-1, ISO 20685 and ISO 14738. This document is meant to be used i
22、n conjunction with requirements documents. Such documents will specify which of the dimensions are to be measured. It is possible that not all of the measurements that can be taken by this document will be specified by the individual requirements document. For the background and rationale for the pr
23、ovisions contained in this document, see Annex C. ISO 2017 All rights reserved vBS ISO 24496:2017BS ISO 24496:2017Office furniture Office chairs Methods for the determination of dimensions 1 Scope This document specifies methods for the determination of the dimensions of office chairs. This document
24、 does not contain dimensional specifications or requirements. 2 Normative references There are no normative references in this document. 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain terminological databases for use in stan
25、dardization at the following addresses: IEC Electropedia: available at h t t p :/ www .electropedia .org/ ISO Online browsing platform: available at h t t p :/ www .iso .org/ obp NOTE For the anthropometric equivalents of the terms and definitions, see Annex B. 3.1 angle between backrest and seat an
26、gle between the loaded backrest and the loaded seat Note 1 to entry: See Figure 1. INTERNATIONAL ST ANDARD ISO 24496:2017(E) ISO 2017 All rights reserved 1BS ISO 24496:2017ISO 24496:2017(E) Key 1 backrest 2 seat 3 CMD (Chair Measurement Device) buttocks pad 4 CMD thoracic pad 5 CMD pelvic pad 6 back
27、rest line angle between backrest and seat Figure 1 Angle between backrest and seat 3.2 angle origin and sign convention right horizontal viewed from the right side of the chair; when the user is seated in the chair and the angle sign convention is clockwise, angle rotation is positive (+) and counte
28、rclockwise is negative () Note 1 to entry: See Figure 2.2 ISO 2017 All rights reservedBS ISO 24496:2017ISO 24496:2017(E) Key 1 vertical 2 horizontal (0) Figure 2 Angle origin and sign convention 3.3 armrest height distance from the top surface of the armrest to the bottom of the loaded CMD buttocks
29、pad parallel to the backrest line at a distance of 180 mm from the backrest line Note 1 to entry: See Figure 3. Dimensions in millimetres ISO 2017 All rights reserved 3BS ISO 24496:2017ISO 24496:2017(E) Key 1 CMD vertical member 2 armrest 3 CMD buttocks pad 4 intersection of projection of vertical m
30、ember front face and armrest 5 backrest line l 1 armrest height Figure 3 Armrest height 3.4 armrest length distance along the armrest within an envelope down from the top of the armrest that is 20 mm deep Note 1 to entry: See Figure 4. Dimensions in millimetres Key 1 armrest l 1 armrest length Figur
31、e 4 Armrest length 3.5 distance between armrests horizontal distance between armrests from the rear of the seat surface width zone forward to the front edge of the seat within the measurement zone 5 mm down from the top of the armrest Note 1 to entry: See Figure 5, Figure 7 and 3.28.4 ISO 2017 All r
32、ights reservedBS ISO 24496:2017ISO 24496:2017(E) Key 1 armrest 2 rear of seat width zone l 1 armrest pad measurement zone l 2 distance between armrests Figure 5 Distance between armrests 3.6 front of armrest position perpendicular distance from the backrest line to the front of the armrest that is i
33、n the measurement zone 120 mm and greater above the top surface of the loaded CMD buttocks pad Note 1 to entry: See Figure 6. ISO 2017 All rights reserved 5BS ISO 24496:2017ISO 24496:2017(E) Dimensions in millimetres Key 1 armrest 2 backrest line 3 CMD buttocks pad 4 measurement zone l 1 front of ar
34、mrest position Figure 6 Front of armrest position 3.7 armrest width horizontal distance across the armrest within the measurement zone 5 mm down from the top of the armrest Note 1 to entry: See Figure 7.6 ISO 2017 All rights reservedBS ISO 24496:2017ISO 24496:2017(E) Dimensions in millimetres Key 1
35、armrest l 1 armrest width Figure 7 Armrest width 3.8 backrest to seat movement ratio ratio of change of the backrest angle relative to the change of angle of the seat that occurs when a seat and backrest move concurrently Note 1 to entry: Does not apply to chairs with seat and/or back angles that on
36、ly move independently. 3.9 backrest angle to vertical angle between vertical and the loaded backrest Note 1 to entry: See Figure 8. ISO 2017 All rights reserved 7BS ISO 24496:2017ISO 24496:2017(E) Key 1 CMD thoracic pad 2 CMD pelvic pad 3 backrest line 4 vertical backrest angle to vertical Figure 8
37、Backrest angle to vertical 3.10 backrest width smallest horizontal dimension of the backrest within the lumbar zone Note 1 to entry: See Figure 9 and 3.18.8 ISO 2017 All rights reservedBS ISO 24496:2017ISO 24496:2017(E) Key 1 backrest 2 lumbar zone l 1 backrest width Figure 9 Backrest width 3.11 bac
38、krest height distance from the loaded seat to the top of the backrest, measured parallel to the backrest line Note 1 to entry: See Figure 10. Key 1 backrest 2 CMD buttocks pad 3 backrest line l 1 backrest height Figure 10 Backrest height ISO 2017 All rights reserved 9BS ISO 24496:2017ISO 24496:2017(
39、E) 3.12 backrest inclination range tilt range of the backrest from its foremost inclination to its most rearward inclination Note 1 to entry: See Figure 11. Key 1 backrest 2 CMD thoracic pad 3 CMD pelvic pad 4 forward most tilt backrest line 5 rearward most tilt backrest line range of backrest incli
40、nation Figure 11 Backrest inclination range 3.13 backrest radius horizontal horizontal radius of the backrest measured within the lumbar zone Note 1 to entry: See Figure 12 and 3.18.10 ISO 2017 All rights reservedBS ISO 24496:2017ISO 24496:2017(E) Key 1 seat 2 backrest 3 lumbar zone r horizontal rad
41、ius of backrest Figure 12 Backrest radius horizontal 3.14 chair measuring device CMD instrument for measuring dimensions of chairs Note 1 to entry: Specified in Annex A. 3.15 hip breadth clearance minimum horizontal distance between armrest assembly from the rear of the seat surface width zone forwa
42、rd to the front edge of the armrest or armrest assembly as measured above the top of the seat surface Note 1 to entry: See Figure 13 and 3.28. ISO 2017 All rights reserved 11BS ISO 24496:2017ISO 24496:2017(E) Key 1 armrest assembly l 1 rear of seat surface width zone to front of armrest l 2 hip brea
43、dth clearance Figure 13 Hip breadth clearance 3.16 lumbar support height distance from the loaded seat to the most prominent segment (or segments) of the lumbar support as determined by the measuring indicators on the CMD, measured parallel to the backrest line Note 1 to entry: See Figure 14 and Fig
44、ure 35. Key 1 backrest line l 1 height of lumbar support L the most prominent segment (or segments) of the lumbar support Figure 14 Lumbar support height12 ISO 2017 All rights reservedBS ISO 24496:2017ISO 24496:2017(E) 3.17 lumbar support protrusion distance from the backrest line to the most promin
45、ent segment (or segments) of the lumbar support as determined by the measuring indicators on the CMD, measured perpendicular to the backrest line Note 1 to entry: See Figure 15 and Figure 35. Key 1 backrest line 2 protrusion of lumbar support L most prominent segment (or segments) of the lumbar supp
46、ort Figure 15 Lumbar support protrusion 3.18 lumbar zone area that is parallel to the backrest line, 160 mm to 270 mm above the bottom of the loaded CMD buttocks pad Note 1 to entry: See Figure 16. ISO 2017 All rights reserved 13BS ISO 24496:2017ISO 24496:2017(E) Dimensions in millimetres Key 1 lumb
47、ar zone Figure 16 Lumbar zone 3.19 median plane vertical plane dividing the chair into two generally symmetrical parts (right and left) Note 1 to entry: See Figure 17. Key 1 median plane Figure 17 Median plane14 ISO 2017 All rights reservedBS ISO 24496:2017ISO 24496:2017(E) 3.20 neck/head rest protr
48、usion perpendicular distance from the backrest line to the foremost protrusion on the neck/head rest Note 1 to entry: See Figure 18. Key 1 neck/head rest 2 backrest line l 1 neck/head rest protrusion Figure 18 Neck/head rest protrusion 3.21 neck/head rest height distance from the loaded seat to the
49、most prominent segment of the neck/head rest, measured parallel to the backrest line when the neck/head rest is in its most vertical position Note 1 to entry: See Figure 19. ISO 2017 All rights reserved 15BS ISO 24496:2017ISO 24496:2017(E) Key 1 neck/head rest 2 backrest line l 1 neck/head rest height Figure 19 Neck/head rest height 3.22 seat depth distance from the backrest line measured parallel to the C
