1、BS EN 12520:2010ICS 97.140NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDFurniture Strength,durability and safety Requirements fordomestic seatingCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproductio
2、n or networking permitted without license from IHS-,-,-This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2010. BSI 2010ISBN 978 0 580 63252 5Amendments/corrigenda issued since publicationDate CommentsBS EN 12520:2010National forewordThis
3、 British Standard is the UK implementation of EN 12520:2010. It supersedes BS 4875-1 and DD ENV 12520:2000 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee FW/0/2, Domestic and Contract Furniture.A list of organizations represented on this committee can
4、 be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.:2007Copyright European Committee for S
5、tandardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12520:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12520 March 2010 ICS 97.140 Supersedes ENV 12520:2000English Version Furniture - Strength, dura
6、bility and safety - Requirements for domestic seating Meubles - 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 20 February
7、2010. CEN members are 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 obtaine
8、d on application to the CEN 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 Managemen
9、t Centre 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands
10、, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any
11、 form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12520:2010: ECopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12520:2010EN 12520:2010 (E) 2 C
12、ontents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Test sequence 45 Constructional requirements 55.1 General requirements 55.2 Shear and squeeze points 55.2.1 Shear and squeeze points when setting up and folding .55.2.2 Shear and squeeze points under influence of pow
13、ered mechanisms .55.2.3 Shear and squeeze points during use .55.3 Stability .55.4 Strength and durability .65.4.1 General 65.4.2 Strength and durability requirements76 Information for use 77 Test report 7Annex A (normative) Backward fall test 8A.1 Backward fall test 8Copyright European Committee for
14、 Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12520:2010EN 12520:2010 (E) 3 Foreword This document (EN 12520:2010) has been prepared by Technical Committee CEN/TC 207 “Furniture”, the secretariat of whi
15、ch 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 September 2010, and conflicting national standards shall be withdrawn at the latest by September 2010. Attention is drawn to the
16、possibility that 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 ENV 12520:2000. According to the CEN/CENELEC Internal Regulations, the national standar
17、ds organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Pol
18、and, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12520:2010EN 12520:2010 (E) 4
19、 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-domestic use, office work chairs, office visitors chairs, chairs for educational institutions,
20、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 seat height adjustment mechanisms. The tests are based on use by persons weighing up to 110 k
21、g. It does not include requirements for electrical safety. It does not include requirements for the resistance to ageing, degradation, flammability and ergonomics. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references,
22、only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1022, Domestic furniture Seating Determination of stability EN 1728:2000, Domestic furniture Seating Test methods for the determination of strength and durabil
23、ity 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 accessible parts parts to which access can easily be gained by the user when the seating is in its intended configuration of use and for which the probability of unintentional user contact i
24、s high 3.2 parts accessible during setting up and folding parts to which access can only be gained when setting up and folding the furniture 3.3 shear and squeeze points shear and squeeze points exist if the distance between two accessible parts moving relative to each other can be more than 7 mm or
25、 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. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without
26、 license from IHS-,-,-BS EN 12520:2010EN 12520:2010 (E) 5 5 Constructional requirements 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. These requirements are met w
27、hen: a) edges of the seat, back rest and 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 de
28、signed so that injuries and inadvertent operation 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
29、squeeze points 5.2.1 Shear and squeeze points 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 o
30、f his/her movements and to be able to cease 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 except
31、ion of tipping seats there shall be no shear 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 duri
32、ng use There shall be no shear and squeeze 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
33、 to move the seating by lifting the seat 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. Copyright European Committee for Standardization Provided by IHS under li
34、cense with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12520:2010EN 12520:2010 (E) 6 5.4 Strength and durability 5.4.1 General Seating shall be tested for strength and durability according to and in the order given in Table 1 and in accordance with the
35、 test conditions contained in EN 1728. Table 1 Tests and test sequence Test Reference Test parameters 1. Seat and back static load test EN 1728:2000, 6.2.1 and 6.3 Seat: force N Back: force N 10 times 1300 450 2. Seat front edge static load test EN 1728:2000, 6.2.2 Force, N 10 times 1300 3. Foot rai
36、l static load test aEN 1728:2000, 6.4 Force, N 10 times 1000 4. Arm sideways static load test EN 1728:2000, 6.5 Force, N 10 times 300 5. Arm downwards static load test EN 1728:2000, 6.6 Force, N 10 times 700 6. Seat and back fatigue test EN 1728:2000, 6.7 and 6.9 Cycles Seat: 1000 N Back: 300 N 2500
37、0 7. Seat front edge fatigue test EN 1728:2000, 6.8 Cycles Force: 800 N 20000 8. Arm fatigue test EN 1728:2000, 6.10 Cycles Force: 400 N 10000 9. Leg forward static load test EN 1728:2000, 6.12 Force, N (max.) Seat load, N 10 times 400 1000 10. Leg sideways static load test EN 1728:2000, 6.13 Force,
38、 N (max.) Seat load, N 10 times 300 1000 11. Seat impact test EN 1728:2000, 6.15 Drop height, mm, 10 times 180 12. Backwards falltest b Annex A.1 Number of impacts 5 13. Back impact test c EN 1728:2000, 6.16 Height of fall, mm/010 times 120/28 a This test is only applicable to seating with a seat he
39、ight greater than 600 mm. b This 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. c This test is for all seating not tested in accordance with Test 12. Copyright Euro
40、pean Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12520:2010EN 12520:2010 (E) 7 5.4.2 Strength and durability requirements The strength and durability requirements are fulfilled when durin
41、g 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 test loads; d) seating fulfils the stability requirements. 6 Information for us
42、e 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) instructions for the care and maintenance of the seating; c) if the seating is fitted
43、 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 The test report shall include at least the following information: a) referen
44、ce 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; e) test results; f) details of any deviations from this European Standard;
45、g) name and address of the test facility; h) date of test. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12520:2010EN 12520:2010 (E) 8 Annex A (normative) Backward fall t
46、est A.1 Backward fall test Place the unloaded seating on the drop test floor (EN 1728:2000, subclause 5.3) in normal use position. Apply a rearward horizontal force to a point 50 mm below the top of the backrest in the centre of the backrest. Measure the force required to lift the front legs off the
47、 floor. If the measured force is less than 30 N push the top of the backrest rearwards until it reaches the equilibrium point (see Figure A.1). Allow it to fall freely on its back without initial force or velocity. Figure A.1 Backward fall test Copyright European Committee for Standardization Provid
48、ed by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12520:2010This page has been intentionally left blankCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN12520:2010BSI GroupHeadquarters 389Chiswick High Road,London, W4 4AL, UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 - Briti
