1、BSI Standards PublicationBS EN 12520:2015Furniture Strength,durability and safety Requirements for domesticseatingBS EN 12520:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 12520:2015.It supersedes BS EN 12520:2010 which is withdrawn. The UK participation
2、in its preparation was entrusted to TechnicalCommittee FW/0/2, Domestic and Contract Furniture.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsibl
3、e for its correctapplication. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 89658 3ICS 97.140Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy a
4、nd Strategy Committee on 31 January 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 12520:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12520 December 2015 ICS 97.140 Supersedes EN 12520:2010English Version Furniture - Strength, durability and safety -
5、 Requirements for domestic seating Mobilier - Rsistance, durabilit et scurit - Exigences relatives aux siges usage domestique Mbel - Festigkeit, Dauerhaltbarkeit und Sicherheit - Anforderungen an Sitzmbel fr den Wohnbereich This European Standard was approved by CEN on 8 November 2015. CEN members a
6、re bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to
7、 the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management C
8、entre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithu
9、ania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1
10、000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12520:2015 EBS EN 12520:2015EN 12520:2015 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 4 4 Test sequence .
11、4 5 Constructional requirements . 4 5.1 General requirements . 4 5.2 Shear and squeeze points . 5 5.2.1 Shear and squeeze points when setting up and folding 5 5.2.2 Shear and squeeze points under influence of powered mechanisms 5 5.2.3 Shear and squeeze points during use 5 5.3 Stability . 5 5.4 Stre
12、ngth and durability . 5 5.4.1 General 5 5.4.2 Strength and durability requirements 7 6 Information for use 7 7 Test report . 7 BS EN 12520:2015EN 12520:2015 (E) 3 European foreword This document (EN 12520:2015) has been prepared by Technical Committee CEN/TC 207 “Furniture”, the secretariat of which
13、 is held by UNI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2016 and conflicting national standards shall be withdrawn at the latest by June 2016. Attention is drawn to the possibility t
14、hat some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 12520:2010. In comparison with EN 12520:2010, the following changes have been made: a) references
15、 to EN 1728:2000 were updated to EN 1728:2012; b) Annex A (normative) “Backward fall test” was deleted; c) the standard was editorially revised. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Sta
16、ndard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, S
17、pain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 12520:2015EN 12520:2015 (E) 4 1 Scope This European Standard specifies the minimum requirements for the safety, strength and durability of all types of domestic seating for adults. It does not apply to ranked seating, seating for non-do
18、mestic use, office work chairs, office visitors chairs, chairs for educational institutions, outdoor seating and to links for linked seating for which European Standards exist. It does not include requirements for the durability of upholstery materials, castors, reclining and tilting mechanisms and
19、seat height adjustment mechanisms. It does not include requirements for electrical safety. It does not include requirements for the resistance to ageing, degradation, flammability and ergonomics. The tests are based on use by persons weighing up to 110 kg. 2 Normative references The following docume
20、nts, 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. EN 1022, Domestic furniture
21、 - Seating - Determination of stability EN 1728:2012, Furniture - Seating - Test methods for the determination of strength and durability 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 accessible part part to which access can easily be gaine
22、d by the user when the seating is in its intended configuration of use and for which the probability of unintentional user contact is high 3.2 part accessible during setting up and folding part to which access can only be gained when setting up and folding the furniture 3.3 shear and squeeze point s
23、hear and squeeze point exists if the distance between two accessible parts moving relative to each other can be more than 7 mm or less than 18 mm in any position during movement 4 Test sequence The tests shall be carried out in the order in which they are listed in this document. 5 Constructional re
24、quirements 5.1 General requirements All parts of the seating with which the user comes into contact, during intended use, shall be designed to ensure that physical injury and damage are avoided. BS EN 12520:2015EN 12520:2015 (E) 5 These requirements are met when: a) edges of the seat, back rest and
25、arm rests, which are in contact with the user when sitting are rounded or chamfered. All other edges accessible during use shall be free from burrs and/or sharp edges; b) ends of hollow components are closed or capped. Movable and adjustable parts shall be designed so that injuries and inadvertent o
26、peration are avoided. It shall not be possible for any load bearing part of the seating to come loose unintentionally. All parts which are lubricated to assist sliding shall be designed to protect users from lubricant stains when in normal use. 5.2 Shear and squeeze points 5.2.1 Shear and squeeze po
27、ints when setting up and folding Unless 5.2.2 or 5.2.3 are applicable, shear and squeeze points, as defined in 3.3, that are created only during setting up and folding, including tipping seat, are acceptable, because the user can be assumed to be in control of his/her movements and to be able to cea
28、se applying the force immediately upon experiencing pain. The edges of parts moving relative to each other and creating shear and squeeze points shall be as specified in 5.1. 5.2.2 Shear and squeeze points under influence of powered mechanisms With the exception of tipping seats there shall be no sh
29、ear and squeeze points created by parts of the seating under powered mechanisms, e.g. springs and gas lifts. NOTE Electrically operated seating is covered by EEC Directives for EMC, Machinery, Low Voltage or Medical Devices. 5.2.3 Shear and squeeze points during use There shall be no shear and squee
30、ze points created by loads applied during normal use. The loads applied during normal use can be found in Table 1. Shear and squeeze points are not acceptable if a hazard is created by the weight of the user during normal movements and actions, e.g. attempting to move the seating by lifting the seat
31、 or by adjusting the backrest. NOTE This hazard is best prevented by the use of automatic locking mechanisms. 5.3 Stability The seating shall fulfil the relevant requirements of EN 1022. 5.4 Strength and durability 5.4.1 General Seating shall be tested for strength and durability according to and in
32、 the order given in Table 1 and in accordance with the test conditions contained in EN 1728:2012. BS EN 12520:2015EN 12520:2015 (E) 6 Table 1 Tests and test sequence Test Reference Test parameters 1. Seat static load and back static load test EN 1728:2012, 6.4 Seat force F1, N Back force F2, N Minim
33、um back force, N Load applied to seats not being tested, N Cycles 1 300 450 410 750 10 2. Seat front edge static load test EN 1728:2012, 6.5 Force, N Load applied to seats not being tested, N Cycles 1 300 750 10 3. Foot rest static load testaEN 1728:2012, 6.8 Force, N Minimum seat force, N Cycles 1
34、000 750 10 4. Arm rest sideways static load test EN 1728:2012, 6.10 Force, N Cycles 300 10 5. Arm rest downwards static load test EN 1728:2012, 6.11 Force, N Cycles 700 10 6. Combined seat and back durability testeEN 1728:2012, 6.17 Seat force F3, N, Back force F4, N Load applied to seats not being
35、tested, N Cycles 1 000 300 750 25 000 7. Seat front edge durability testdEN 1728:2012, 6.18 Force, N Cycles 800 20 000 8. Arm rest durability test EN 1728:2012, 6.20 Force, N Cycles 400 10 000 9. Leg forward static load test EN 1728:2012, 6.15 Force, N (max.) Seat load, N Cycles 400 1 000 10 10. Leg
36、 sideways static load test EN 1728:2012, 6.16 Force, N (max.) Seat load, N Cycles 300 1 000 10 11. Seat impact test EN 1728:2012, 6.24 Drop height, mm Cycles 180 10 12. Backward fall testbEN 1728:2012, 6.28 Number of impacts 5 13. Back impact testcEN 1728:2012, 6.25 Height of fall, mm or angle, Cycl
37、es 120 28 10 aThis test is only applicable to seating with a seat height greater than 600 mm. bThis test is only for single seating units where the back will be the first part of the structure to strike the floor and the force used to overturn the chair rearwards is less than 30 N. cThis test is for
38、 all seating not tested in accordance with Test 12. dIn derogation of EN 1728:2012 the loading points shall be 80 mm from the relevant edges of the seat. eThe minimum back force is the force that just prevents rearward overturning. BS EN 12520:2015EN 12520:2015 (E) 7 5.4.2 Strength and durability re
39、quirements The strength and durability requirements are fulfilled when during and after testing in accordance with Table 1: a) there are no fractures of any member, joint or component; b) there are no loosening of joints intended to be rigid; c) seating fulfils its functions after removal of the tes
40、t loads; d) seating fulfils the stability requirements. 6 Information for use Information for use shall be available in the language of the country in which it will be delivered to the end user. It shall contain at least the following details: a) assembly instructions, where applicable; b) instructi
41、ons for the care and maintenance of the seating; c) if the seating is fitted with seat height adjustments with energy accumulators, an additional note is required pointing out that only trained personnel may replace or repair seat height adjustment components with energy accumulators. 7 Test report
42、The test report shall include at least the following information: a) reference to this European Standard; b) piece of furniture tested, e.g. description of item, specification, drawings, photographs; c) details of defects observed before testing; d) any variation from the specified temperature range
43、; e) test results; f) name and address of the test facility; g) date of test. This page deliberately left blankThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is incorporated
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